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-rw-r--r--Documentation/arm/OMAP/omap_pm129
-rw-r--r--arch/arm/mach-omap2/Makefile7
-rw-r--r--arch/arm/mach-omap2/board-2430sdp.c13
-rw-r--r--arch/arm/mach-omap2/board-3430sdp.c18
-rw-r--r--arch/arm/mach-omap2/board-apollon.c20
-rw-r--r--arch/arm/mach-omap2/board-generic.c10
-rw-r--r--arch/arm/mach-omap2/board-h4.c20
-rw-r--r--arch/arm/mach-omap2/board-ldp.c20
-rw-r--r--arch/arm/mach-omap2/board-omap3beagle.c26
-rw-r--r--arch/arm/mach-omap2/board-omap3evm.c12
-rw-r--r--arch/arm/mach-omap2/board-omap3pandora.c20
-rw-r--r--arch/arm/mach-omap2/board-overo.c20
-rw-r--r--arch/arm/mach-omap2/board-rx51.c4
-rw-r--r--arch/arm/mach-omap2/board-zoom2.c18
-rw-r--r--arch/arm/mach-omap2/clock34xx.c17
-rw-r--r--arch/arm/mach-omap2/clock34xx.h21
-rw-r--r--arch/arm/mach-omap2/cm.c70
-rw-r--r--arch/arm/mach-omap2/cm.h4
-rw-r--r--arch/arm/mach-omap2/cm4xxx.c68
-rw-r--r--arch/arm/mach-omap2/io.c23
-rw-r--r--arch/arm/mach-omap2/omap_hwmod.c1554
-rw-r--r--arch/arm/mach-omap2/omap_hwmod_2420.h141
-rw-r--r--arch/arm/mach-omap2/omap_hwmod_2430.h143
-rw-r--r--arch/arm/mach-omap2/omap_hwmod_34xx.h168
-rw-r--r--arch/arm/mach-omap2/powerdomain.c4
-rw-r--r--arch/arm/mach-omap2/serial.c14
-rw-r--r--arch/arm/plat-omap/Kconfig13
-rw-r--r--arch/arm/plat-omap/Makefile5
-rw-r--r--arch/arm/plat-omap/clock.c2
-rw-r--r--arch/arm/plat-omap/include/mach/omap-pm.h301
-rw-r--r--arch/arm/plat-omap/include/mach/omap_device.h141
-rw-r--r--arch/arm/plat-omap/include/mach/omap_hwmod.h447
-rw-r--r--arch/arm/plat-omap/include/mach/sdrc.h9
-rw-r--r--arch/arm/plat-omap/include/mach/serial.h3
-rw-r--r--arch/arm/plat-omap/omap-pm-noop.c296
-rw-r--r--arch/arm/plat-omap/omap_device.c687
36 files changed, 4333 insertions, 135 deletions
diff --git a/Documentation/arm/OMAP/omap_pm b/Documentation/arm/OMAP/omap_pm
new file mode 100644
index 00000000000..5389440aade
--- /dev/null
+++ b/Documentation/arm/OMAP/omap_pm
@@ -0,0 +1,129 @@
+
+The OMAP PM interface
+=====================
+
+This document describes the temporary OMAP PM interface. Driver
+authors use these functions to communicate minimum latency or
+throughput constraints to the kernel power management code.
+Over time, the intention is to merge features from the OMAP PM
+interface into the Linux PM QoS code.
+
+Drivers need to express PM parameters which:
+
+- support the range of power management parameters present in the TI SRF;
+
+- separate the drivers from the underlying PM parameter
+ implementation, whether it is the TI SRF or Linux PM QoS or Linux
+ latency framework or something else;
+
+- specify PM parameters in terms of fundamental units, such as
+ latency and throughput, rather than units which are specific to OMAP
+ or to particular OMAP variants;
+
+- allow drivers which are shared with other architectures (e.g.,
+ DaVinci) to add these constraints in a way which won't affect non-OMAP
+ systems,
+
+- can be implemented immediately with minimal disruption of other
+ architectures.
+
+
+This document proposes the OMAP PM interface, including the following
+five power management functions for driver code:
+
+1. Set the maximum MPU wakeup latency:
+ (*pdata->set_max_mpu_wakeup_lat)(struct device *dev, unsigned long t)
+
+2. Set the maximum device wakeup latency:
+ (*pdata->set_max_dev_wakeup_lat)(struct device *dev, unsigned long t)
+
+3. Set the maximum system DMA transfer start latency (CORE pwrdm):
+ (*pdata->set_max_sdma_lat)(struct device *dev, long t)
+
+4. Set the minimum bus throughput needed by a device:
+ (*pdata->set_min_bus_tput)(struct device *dev, u8 agent_id, unsigned long r)
+
+5. Return the number of times the device has lost context
+ (*pdata->get_dev_context_loss_count)(struct device *dev)
+
+
+Further documentation for all OMAP PM interface functions can be
+found in arch/arm/plat-omap/include/mach/omap-pm.h.
+
+
+The OMAP PM layer is intended to be temporary
+---------------------------------------------
+
+The intention is that eventually the Linux PM QoS layer should support
+the range of power management features present in OMAP3. As this
+happens, existing drivers using the OMAP PM interface can be modified
+to use the Linux PM QoS code; and the OMAP PM interface can disappear.
+
+
+Driver usage of the OMAP PM functions
+-------------------------------------
+
+As the 'pdata' in the above examples indicates, these functions are
+exposed to drivers through function pointers in driver .platform_data
+structures. The function pointers are initialized by the board-*.c
+files to point to the corresponding OMAP PM functions:
+.set_max_dev_wakeup_lat will point to
+omap_pm_set_max_dev_wakeup_lat(), etc. Other architectures which do
+not support these functions should leave these function pointers set
+to NULL. Drivers should use the following idiom:
+
+ if (pdata->set_max_dev_wakeup_lat)
+ (*pdata->set_max_dev_wakeup_lat)(dev, t);
+
+The most common usage of these functions will probably be to specify
+the maximum time from when an interrupt occurs, to when the device
+becomes accessible. To accomplish this, driver writers should use the
+set_max_mpu_wakeup_lat() function to to constrain the MPU wakeup
+latency, and the set_max_dev_wakeup_lat() function to constrain the
+device wakeup latency (from clk_enable() to accessibility). For
+example,
+
+ /* Limit MPU wakeup latency */
+ if (pdata->set_max_mpu_wakeup_lat)
+ (*pdata->set_max_mpu_wakeup_lat)(dev, tc);
+
+ /* Limit device powerdomain wakeup latency */
+ if (pdata->set_max_dev_wakeup_lat)
+ (*pdata->set_max_dev_wakeup_lat)(dev, td);
+
+ /* total wakeup latency in this example: (tc + td) */
+
+The PM parameters can be overwritten by calling the function again
+with the new value. The settings can be removed by calling the
+function with a t argument of -1 (except in the case of
+set_max_bus_tput(), which should be called with an r argument of 0).
+
+The fifth function above, omap_pm_get_dev_context_loss_count(),
+is intended as an optimization to allow drivers to determine whether the
+device has lost its internal context. If context has been lost, the
+driver must restore its internal context before proceeding.
+
+
+Other specialized interface functions
+-------------------------------------
+
+The five functions listed above are intended to be usable by any
+device driver. DSPBridge and CPUFreq have a few special requirements.
+DSPBridge expresses target DSP performance levels in terms of OPP IDs.
+CPUFreq expresses target MPU performance levels in terms of MPU
+frequency. The OMAP PM interface contains functions for these
+specialized cases to convert that input information (OPPs/MPU
+frequency) into the form that the underlying power management
+implementation needs:
+
+6. (*pdata->dsp_get_opp_table)(void)
+
+7. (*pdata->dsp_set_min_opp)(u8 opp_id)
+
+8. (*pdata->dsp_get_opp)(void)
+
+9. (*pdata->cpu_get_freq_table)(void)
+
+10. (*pdata->cpu_set_freq)(unsigned long f)
+
+11. (*pdata->cpu_get_freq)(void)
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 8850a247bec..8cb16777661 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -5,7 +5,7 @@
# Common support
obj-y := id.o io.o control.o mux.o devices.o serial.o gpmc.o timer-gp.o
-omap-2-3-common = irq.o sdrc.o
+omap-2-3-common = irq.o sdrc.o omap_hwmod.o
prcm-common = prcm.o powerdomain.o
clock-common = clock.o clockdomain.o
@@ -35,6 +35,11 @@ obj-$(CONFIG_ARCH_OMAP3) += pm34xx.o sleep34xx.o
obj-$(CONFIG_PM_DEBUG) += pm-debug.o
endif
+# PRCM
+obj-$(CONFIG_ARCH_OMAP2) += cm.o
+obj-$(CONFIG_ARCH_OMAP3) += cm.o
+obj-$(CONFIG_ARCH_OMAP4) += cm4xxx.o
+
# Clock framework
obj-$(CONFIG_ARCH_OMAP2) += clock24xx.o
obj-$(CONFIG_ARCH_OMAP3) += clock34xx.o
diff --git a/arch/arm/mach-omap2/board-2430sdp.c b/arch/arm/mach-omap2/board-2430sdp.c
index 7f5a74d5924..42217b32f83 100644
--- a/arch/arm/mach-omap2/board-2430sdp.c
+++ b/arch/arm/mach-omap2/board-2430sdp.c
@@ -139,18 +139,19 @@ static inline void board_smc91x_init(void)
#endif
+static struct omap_board_config_kernel sdp2430_config[] = {
+ {OMAP_TAG_LCD, &sdp2430_lcd_config},
+};
+
static void __init omap_2430sdp_init_irq(void)
{
+ omap_board_config = sdp2430_config;
+ omap_board_config_size = ARRAY_SIZE(sdp2430_config);
omap2_init_common_hw(NULL, NULL);
omap_init_irq();
omap_gpio_init();
}
-static struct omap_board_config_kernel sdp2430_config[] = {
- {OMAP_TAG_LCD, &sdp2430_lcd_config},
-};
-
-
static struct twl4030_gpio_platform_data sdp2430_gpio_data = {
.gpio_base = OMAP_MAX_GPIO_LINES,
.irq_base = TWL4030_GPIO_IRQ_BASE,
@@ -200,8 +201,6 @@ static void __init omap_2430sdp_init(void)
omap2430_i2c_init();
platform_add_devices(sdp2430_devices, ARRAY_SIZE(sdp2430_devices));
- omap_board_config = sdp2430_config;
- omap_board_config_size = ARRAY_SIZE(sdp2430_config);
omap_serial_init();
twl4030_mmc_init(mmc);
usb_musb_init();
diff --git a/arch/arm/mach-omap2/board-3430sdp.c b/arch/arm/mach-omap2/board-3430sdp.c
index 31d9f56c648..bd57ec76dc5 100644
--- a/arch/arm/mach-omap2/board-3430sdp.c
+++ b/arch/arm/mach-omap2/board-3430sdp.c
@@ -167,13 +167,6 @@ static struct platform_device *sdp3430_devices[] __initdata = {
&sdp3430_lcd_device,
};
-static void __init omap_3430sdp_init_irq(void)
-{
- omap2_init_common_hw(hyb18m512160af6_sdrc_params, NULL);
- omap_init_irq();
- omap_gpio_init();
-}
-
static struct omap_lcd_config sdp3430_lcd_config __initdata = {
.ctrl_name = "internal",
};
@@ -182,6 +175,15 @@ static struct omap_board_config_kernel sdp3430_config[] __initdata = {
{ OMAP_TAG_LCD, &sdp3430_lcd_config },
};
+static void __init omap_3430sdp_init_irq(void)
+{
+ omap_board_config = sdp3430_config;
+ omap_board_config_size = ARRAY_SIZE(sdp3430_config);
+ omap2_init_common_hw(hyb18m512160af6_sdrc_params, NULL);
+ omap_init_irq();
+ omap_gpio_init();
+}
+
static int sdp3430_batt_table[] = {
/* 0 C*/
30800, 29500, 28300, 27100,
@@ -482,8 +484,6 @@ static void __init omap_3430sdp_init(void)
{
omap3430_i2c_init();
platform_add_devices(sdp3430_devices, ARRAY_SIZE(sdp3430_devices));
- omap_board_config = sdp3430_config;
- omap_board_config_size = ARRAY_SIZE(sdp3430_config);
if (omap_rev() > OMAP3430_REV_ES1_0)
ts_gpio = SDP3430_TS_GPIO_IRQ_SDPV2;
else
diff --git a/arch/arm/mach-omap2/board-apollon.c b/arch/arm/mach-omap2/board-apollon.c
index 615f21d1eb2..7a2b54c7291 100644
--- a/arch/arm/mach-omap2/board-apollon.c
+++ b/arch/arm/mach-omap2/board-apollon.c
@@ -248,14 +248,6 @@ out:
clk_put(gpmc_fck);
}
-static void __init omap_apollon_init_irq(void)
-{
- omap2_init_common_hw(NULL, NULL);
- omap_init_irq();
- omap_gpio_init();
- apollon_init_smc91x();
-}
-
static struct omap_usb_config apollon_usb_config __initdata = {
.register_dev = 1,
.hmc_mode = 0x14, /* 0:dev 1:host1 2:disable */
@@ -271,6 +263,16 @@ static struct omap_board_config_kernel apollon_config[] = {
{ OMAP_TAG_LCD, &apollon_lcd_config },
};
+static void __init omap_apollon_init_irq(void)
+{
+ omap_board_config = apollon_config;
+ omap_board_config_size = ARRAY_SIZE(apollon_config);
+ omap2_init_common_hw(NULL, NULL);
+ omap_init_irq();
+ omap_gpio_init();
+ apollon_init_smc91x();
+}
+
static void __init apollon_led_init(void)
{
/* LED0 - AA10 */
@@ -319,8 +321,6 @@ static void __init omap_apollon_init(void)
* if not needed.
*/
platform_add_devices(apollon_devices, ARRAY_SIZE(apollon_devices));
- omap_board_config = apollon_config;
- omap_board_config_size = ARRAY_SIZE(apollon_config);
omap_serial_init();
}
diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
index 3e401c5b6e4..2e09a1c444c 100644
--- a/arch/arm/mach-omap2/board-generic.c
+++ b/arch/arm/mach-omap2/board-generic.c
@@ -31,19 +31,19 @@
#include <mach/board.h>
#include <mach/common.h>
+static struct omap_board_config_kernel generic_config[] = {
+};
+
static void __init omap_generic_init_irq(void)
{
+ omap_board_config = generic_config;
+ omap_board_config_size = ARRAY_SIZE(generic_config);
omap2_init_common_hw(NULL, NULL);
omap_init_irq();
}
-static struct omap_board_config_kernel generic_config[] = {
-};
-
static void __init omap_generic_init(void)
{
- omap_board_config = generic_config;
- omap_board_config_size = ARRAY_SIZE(generic_config);
omap_serial_init();
}
diff --git a/arch/arm/mach-omap2/board-h4.c b/arch/arm/mach-omap2/board-h4.c
index b6501d241c1..eaa02d012c5 100644
--- a/arch/arm/mach-omap2/board-h4.c
+++ b/arch/arm/mach-omap2/board-h4.c
@@ -268,14 +268,6 @@ static void __init h4_init_flash(void)
h4_flash_resource.end = base + SZ_64M - 1;
}
-static void __init omap_h4_init_irq(void)
-{
- omap2_init_common_hw(NULL, NULL);
- omap_init_irq();
- omap_gpio_init();
- h4_init_flash();
-}
-
static struct omap_lcd_config h4_lcd_config __initdata = {
.ctrl_name = "internal",
};
@@ -317,6 +309,16 @@ static struct omap_board_config_kernel h4_config[] = {
{ OMAP_TAG_LCD, &h4_lcd_config },
};
+static void __init omap_h4_init_irq(void)
+{
+ omap_board_config = h4_config;
+ omap_board_config_size = ARRAY_SIZE(h4_config);
+ omap2_init_common_hw(NULL, NULL);
+ omap_init_irq();
+ omap_gpio_init();
+ h4_init_flash();
+}
+
static struct at24_platform_data m24c01 = {
.byte_len = SZ_1K / 8,
.page_size = 16,
@@ -361,8 +363,6 @@ static void __init omap_h4_init(void)
ARRAY_SIZE(h4_i2c_board_info));
platform_add_devices(h4_devices, ARRAY_SIZE(h4_devices));
- omap_board_config = h4_config;
- omap_board_config_size = ARRAY_SIZE(h4_config);
omap_usb_init(&h4_usb_config);
omap_serial_init();
}
diff --git a/arch/arm/mach-omap2/board-ldp.c b/arch/arm/mach-omap2/board-ldp.c
index 2dd6806a1e8..ec6854cbdd9 100644
--- a/arch/arm/mach-omap2/board-ldp.c
+++ b/arch/arm/mach-omap2/board-ldp.c
@@ -268,14 +268,6 @@ static inline void __init ldp_init_smsc911x(void)
gpio_direction_input(eth_gpio);
}
-static void __init omap_ldp_init_irq(void)
-{
- omap2_init_common_hw(NULL, NULL);
- omap_init_irq();
- omap_gpio_init();
- ldp_init_smsc911x();
-}
-
static struct platform_device ldp_lcd_device = {
.name = "ldp_lcd",
.id = -1,
@@ -289,6 +281,16 @@ static struct omap_board_config_kernel ldp_config[] __initdata = {
{ OMAP_TAG_LCD, &ldp_lcd_config },
};
+static void __init omap_ldp_init_irq(void)
+{
+ omap_board_config = ldp_config;
+ omap_board_config_size = ARRAY_SIZE(ldp_config);
+ omap2_init_common_hw(NULL, NULL);
+ omap_init_irq();
+ omap_gpio_init();
+ ldp_init_smsc911x();
+}
+
static struct twl4030_usb_data ldp_usb_data = {
.usb_mode = T2_USB_MODE_ULPI,
};
@@ -372,8 +374,6 @@ static void __init omap_ldp_init(void)
{
omap_i2c_init();
platform_add_devices(ldp_devices, ARRAY_SIZE(ldp_devices));
- omap_board_config = ldp_config;
- omap_board_config_size = ARRAY_SIZE(ldp_config);
ts_gpio = 54;
ldp_spi_board_info[0].irq = gpio_to_irq(ts_gpio);
spi_register_board_info(ldp_spi_board_info,
diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c
index d79ea8da627..500c9956876 100644
--- a/arch/arm/mach-omap2/board-omap3beagle.c
+++ b/arch/arm/mach-omap2/board-omap3beagle.c
@@ -281,17 +281,6 @@ static int __init omap3_beagle_i2c_init(void)
return 0;
}
-static void __init omap3_beagle_init_irq(void)
-{
- omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
- mt46h32m32lf6_sdrc_params);
- omap_init_irq();
-#ifdef CONFIG_OMAP_32K_TIMER
- omap2_gp_clockevent_set_gptimer(12);
-#endif
- omap_gpio_init();
-}
-
static struct gpio_led gpio_leds[] = {
{
.name = "beagleboard::usr0",
@@ -349,6 +338,19 @@ static struct omap_board_config_kernel omap3_beagle_config[] __initdata = {
{ OMAP_TAG_LCD, &omap3_beagle_lcd_config },
};
+static void __init omap3_beagle_init_irq(void)
+{
+ omap_board_config = omap3_beagle_config;
+ omap_board_config_size = ARRAY_SIZE(omap3_beagle_config);
+ omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
+ mt46h32m32lf6_sdrc_params);
+ omap_init_irq();
+#ifdef CONFIG_OMAP_32K_TIMER
+ omap2_gp_clockevent_set_gptimer(12);
+#endif
+ omap_gpio_init();
+}
+
static struct platform_device *omap3_beagle_devices[] __initdata = {
&omap3_beagle_lcd_device,
&leds_gpio,
@@ -398,8 +400,6 @@ static void __init omap3_beagle_init(void)
omap3_beagle_i2c_init();
platform_add_devices(omap3_beagle_devices,
ARRAY_SIZE(omap3_beagle_devices));
- omap_board_config = omap3_beagle_config;
- omap_board_config_size = ARRAY_SIZE(omap3_beagle_config);
omap_serial_init();
omap_cfg_reg(J25_34XX_GPIO170);
diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c
index 3e0435371ce..d50b9be9058 100644
--- a/arch/arm/mach-omap2/board-omap3evm.c
+++ b/arch/arm/mach-omap2/board-omap3evm.c
@@ -274,18 +274,20 @@ struct spi_board_info omap3evm_spi_board_info[] = {
},
};
+static struct omap_board_config_kernel omap3_evm_config[] __initdata = {
+ { OMAP_TAG_LCD, &omap3_evm_lcd_config },
+};
+
static void __init omap3_evm_init_irq(void)
{
+ omap_board_config = omap3_evm_config;
+ omap_board_config_size = ARRAY_SIZE(omap3_evm_config);
omap2_init_common_hw(mt46h32m32lf6_sdrc_params, NULL);
omap_init_irq();
omap_gpio_init();
omap3evm_init_smc911x();
}
-static struct omap_board_config_kernel omap3_evm_config[] __initdata = {
- { OMAP_TAG_LCD, &omap3_evm_lcd_config },
-};
-
static struct platform_device *omap3_evm_devices[] __initdata = {
&omap3_evm_lcd_device,
&omap3evm_smc911x_device,
@@ -296,8 +298,6 @@ static void __init omap3_evm_init(void)
omap3_evm_i2c_init();
platform_add_devices(omap3_evm_devices, ARRAY_SIZE(omap3_evm_devices));
- omap_board_config = omap3_evm_config;
- omap_board_config_size = ARRAY_SIZE(omap3_evm_config);
spi_register_board_info(omap3evm_spi_board_info,
ARRAY_SIZE(omap3evm_spi_board_info));
diff --git a/arch/arm/mach-omap2/board-omap3pandora.c b/arch/arm/mach-omap2/board-omap3pandora.c
index 8236708c362..b43f6e36b6d 100644
--- a/arch/arm/mach-omap2/board-omap3pandora.c
+++ b/arch/arm/mach-omap2/board-omap3pandora.c
@@ -305,14 +305,6 @@ static int __init omap3pandora_i2c_init(void)
return 0;
}
-static void __init omap3pandora_init_irq(void)
-{
- omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
- mt46h32m32lf6_sdrc_params);
- omap_init_irq();
- omap_gpio_init();
-}
-
static void __init omap3pandora_ads7846_init(void)
{
int gpio = OMAP3_PANDORA_TS_GPIO;
@@ -375,6 +367,16 @@ static struct omap_board_config_kernel omap3pandora_config[] __initdata = {
{ OMAP_TAG_LCD, &omap3pandora_lcd_config },
};
+static void __init omap3pandora_init_irq(void)
+{
+ omap_board_config = omap3pandora_config;
+ omap_board_config_size = ARRAY_SIZE(omap3pandora_config);
+ omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
+ mt46h32m32lf6_sdrc_params);
+ omap_init_irq();
+ omap_gpio_init();
+}
+
static struct platform_device *omap3pandora_devices[] __initdata = {
&omap3pandora_lcd_device,
&pandora_leds_gpio,
@@ -386,8 +388,6 @@ static void __init omap3pandora_init(void)
omap3pandora_i2c_init();
platform_add_devices(omap3pandora_devices,
ARRAY_SIZE(omap3pandora_devices));
- omap_board_config = omap3pandora_config;
- omap_board_config_size = ARRAY_SIZE(omap3pandora_config);
omap_serial_init();
spi_register_board_info(omap3pandora_spi_board_info,
ARRAY_SIZE(omap3pandora_spi_board_info));
diff --git a/arch/arm/mach-omap2/board-overo.c b/arch/arm/mach-omap2/board-overo.c
index eb78e6eab4f..9917d2fddc2 100644
--- a/arch/arm/mach-omap2/board-overo.c
+++ b/arch/arm/mach-omap2/board-overo.c
@@ -357,14 +357,6 @@ static int __init overo_i2c_init(void)
return 0;
}
-static void __init overo_init_irq(void)
-{
- omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
- mt46h32m32lf6_sdrc_params);
- omap_init_irq();
- omap_gpio_init();
-}
-
static struct platform_device overo_lcd_device = {
.name = "overo_lcd",
.id = -1,
@@ -378,6 +370,16 @@ static struct omap_board_config_kernel overo_config[] __initdata = {
{ OMAP_TAG_LCD, &overo_lcd_config },
};
+static void __init overo_init_irq(void)
+{
+ omap_board_config = overo_config;
+ omap_board_config_size = ARRAY_SIZE(overo_config);
+ omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
+ mt46h32m32lf6_sdrc_params);
+ omap_init_irq();
+ omap_gpio_init();
+}
+
static struct platform_device *overo_devices[] __initdata = {
&overo_lcd_device,
};
@@ -386,8 +388,6 @@ static void __init overo_init(void)
{
overo_i2c_init();
platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices));
- omap_board_config = overo_config;
- omap_board_config_size = ARRAY_SIZE(overo_config);
omap_serial_init();
overo_flash_init();
usb_musb_init();
diff --git a/arch/arm/mach-omap2/board-rx51.c b/arch/arm/mach-omap2/board-rx51.c
index c0d13401425..f9196c3b1a7 100644
--- a/arch/arm/mach-omap2/board-rx51.c
+++ b/arch/arm/mach-omap2/board-rx51.c
@@ -56,6 +56,8 @@ static struct omap_board_config_kernel rx51_config[] = {
static void __init rx51_init_irq(void)
{
+ omap_board_config = rx51_config;
+ omap_board_config_size = ARRAY_SIZE(rx51_config);
omap2_init_common_hw(NULL, NULL);
omap_init_irq();
omap_gpio_init();
@@ -65,8 +67,6 @@ extern void __init rx51_peripherals_init(void);
static void __init rx51_init(void)
{
- omap_board_config = rx51_config;
- omap_board_config_size = ARRAY_SIZE(rx51_config);
omap_serial_init();
usb_musb_init();
rx51_peripherals_init();
diff --git a/arch/arm/mach-omap2/board-zoom2.c b/arch/arm/mach-omap2/board-zoom2.c
index dabba2720a9..324009edbd5 100644
--- a/arch/arm/mach-omap2/board-zoom2.c
+++ b/arch/arm/mach-omap2/board-zoom2.c
@@ -90,13 +90,6 @@ static struct twl4030_keypad_data zoom2_kp_twl4030_data = {
.rep = 1,
};
-static void __init omap_zoom2_init_irq(void)
-{
- omap2_init_common_hw(NULL, NULL);
- omap_init_irq();
- omap_gpio_init();
-}
-
static struct omap_board_config_kernel zoom2_config[] __initdata = {
};
@@ -212,6 +205,15 @@ static struct twl4030_usb_data zoom2_usb_data = {
.usb_mode = T2_USB_MODE_ULPI,
};
+static void __init omap_zoom2_init_irq(void)
+{
+ omap_board_config = zoom2_config;
+ omap_board_config_size = ARRAY_SIZE(zoom2_config);
+ omap2_init_common_hw(NULL, NULL);
+ omap_init_irq();
+ omap_gpio_init();
+}
+
static struct twl4030_gpio_platform_data zoom2_gpio_data = {
.gpio_base = OMAP_MAX_GPIO_LINES,
.irq_base = TWL4030_GPIO_IRQ_BASE,
@@ -262,8 +264,6 @@ extern int __init omap_zoom2_debugboard_init(void);
static void __init omap_zoom2_init(void)
{
omap_i2c_init();
- omap_board_config = zoom2_config;
- omap_board_config_size = ARRAY_SIZE(zoom2_config);
omap_serial_init();
omap_zoom2_debugboard_init();
usb_musb_init();
diff --git a/arch/arm/mach-omap2/clock34xx.c b/arch/arm/mach-omap2/clock34xx.c
index cd7819cc0c9..fafcd32e690 100644
--- a/arch/arm/mach-omap2/clock34xx.c
+++ b/arch/arm/mach-omap2/clock34xx.c
@@ -27,6 +27,7 @@
#include <linux/limits.h>
#include <linux/bitops.h>
+#include <mach/cpu.h>
#include <mach/clock.h>
#include <mach/sram.h>
#include <asm/div64.h>
@@ -1067,17 +1068,17 @@ static int __init omap2_clk_arch_init(void)
return -EINVAL;
/* REVISIT: not yet ready for 343x */
-#if 0
- if (clk_set_rate(&virt_prcm_set, mpurate))
- printk(KERN_ERR "Could not find matching MPU rate\n");
-#endif
+ if (clk_set_rate(&dpll1_ck, mpurate))
+ printk(KERN_ERR "*** Unable to set MPU rate\n");
recalculate_root_clocks();
- printk(KERN_INFO "Switched to new clocking rate (Crystal/DPLL3/MPU): "
+ printk(KERN_INFO "Switched to new clocking rate (Crystal/Core/MPU): "
"%ld.%01ld/%ld/%ld MHz\n",
- (osc_sys_ck.rate / 1000000), (osc_sys_ck.rate / 100000) % 10,
- (core_ck.rate / 1000000), (dpll1_fck.rate / 1000000)) ;
+ (osc_sys_ck.rate / 1000000), ((osc_sys_ck.rate / 100000) % 10),
+ (core_ck.rate / 1000000), (arm_fck.rate / 1000000)) ;
+
+ calibrate_delay();
return 0;
}
@@ -1136,7 +1137,7 @@ int __init omap2_clk_init(void)
recalculate_root_clocks();
- printk(KERN_INFO "Clocking rate (Crystal/DPLL/ARM core): "
+ printk(KERN_INFO "Clocking rate (Crystal/Core/MPU): "
"%ld.%01ld/%ld/%ld MHz\n",
(osc_sys_ck.rate / 1000000), (osc_sys_ck.rate / 100000) % 10,
(core_ck.rate / 1000000), (arm_fck.rate / 1000000));
diff --git a/arch/arm/mach-omap2/clock34xx.h b/arch/arm/mach-omap2/clock34xx.h
index 57cc2725b92..c8119781e00 100644
--- a/arch/arm/mach-omap2/clock34xx.h
+++ b/arch/arm/mach-omap2/clock34xx.h
@@ -1020,6 +1020,7 @@ static struct clk arm_fck = {
.clksel_reg = OMAP_CM_REGADDR(MPU_MOD, OMAP3430_CM_IDLEST_PLL),
.clksel_mask = OMAP3430_ST_MPU_CLK_MASK,
.clksel = arm_fck_clksel,
+ .clkdm_name = "mpu_clkdm",
.recalc = &omap2_clksel_recalc,
};
@@ -1155,7 +1156,6 @@ static struct clk gfx_cg1_ck = {
.name = "gfx_cg1_ck",
.ops = &clkops_omap2_dflt_wait,
.parent = &gfx_l3_fck, /* REVISIT: correct? */
- .init = &omap2_init_clk_clkdm,
.enable_reg = OMAP_CM_REGADDR(GFX_MOD, CM_FCLKEN),
.enable_bit = OMAP3430ES1_EN_2D_SHIFT,
.clkdm_name = "gfx_3430es1_clkdm",
@@ -1166,7 +1166,6 @@ static struct clk gfx_cg2_ck = {
.name = "gfx_cg2_ck",
.ops = &clkops_omap2_dflt_wait,
.parent = &gfx_l3_fck, /* REVISIT: correct? */
- .init = &omap2_init_clk_clkdm,
.enable_reg = OMAP_CM_REGADDR(GFX_MOD, CM_FCLKEN),
.enable_bit = OMAP3430ES1_EN_3D_SHIFT,
.clkdm_name = "gfx_3430es1_clkdm",
@@ -1210,7 +1209,6 @@ static struct clk sgx_ick = {
.name = "sgx_ick",
.ops = &clkops_omap2_dflt_wait,
.parent = &l3_ick,
- .init = &omap2_init_clk_clkdm,
.enable_reg = OMAP_CM_REGADDR(OMAP3430ES2_SGX_MOD, CM_ICLKEN),
.enable_bit = OMAP3430ES2_CM_ICLKEN_SGX_EN_SGX_SHIFT,
.clkdm_name = "sgx_clkdm",
@@ -1223,7 +1221,6 @@ static struct clk d2d_26m_fck = {
.name = "d2d_26m_fck",
.ops = &clkops_omap2_dflt_wait,
.parent = &sys_ck,
- .init = &omap2_init_clk_clkdm,
.enable_reg = OMAP_CM_REGADDR(CORE_MOD, CM_FCLKEN1),
.enable_bit = OMAP3430ES1_EN_D2D_SHIFT,
.clkdm_name = "d2d_clkdm",
@@ -1234,7 +1231,6 @@ static struct clk modem_fck = {
.name = "modem_fck",
.ops = &clkops_omap2_dflt_wait,
.parent = &sys_ck,
- .init = &omap2_init_clk_clkdm,
.enable_reg = OMAP_CM_REGADDR(CORE_MOD, CM_FCLKEN1),
.enable_bit = OMAP3430_EN_MODEM_SHIFT,
.clkdm_name = "d2d_clkdm",
@@ -1622,7 +1618,6 @@ static struct clk core_l3_ick = {
.name = "core_l3_ick",
.ops = &clkops_null,
.parent = &l3_ick,
- .init = &omap2_init_clk_clkdm,
.clkdm_name = "core_l3_clkdm",
.recalc = &followparent_recalc,
};
@@ -1691,7 +1686,6 @@ static struct clk core_l4_ick = {
.name = "core_l4_ick",
.ops = &clkops_null,
.parent = &l4_ick,
- .init = &omap2_init_clk_clkdm,
.clkdm_name = "core_l4_clkdm",
.recalc = &followparent_recalc,
};
@@ -2089,7 +2083,6 @@ static struct clk dss_tv_fck = {
.name = "dss_tv_fck",
.ops = &clkops_omap2_dflt,
.parent = &omap_54m_fck,
- .init = &omap2_init_clk_clkdm,
.enable_reg = OMAP_CM_REGADDR(OMAP3430_DSS_MOD, CM_FCLKEN),
.enable_bit = OMAP3430_EN_TV_SHIFT,
.clkdm_name = "dss_clkdm",
@@ -2100,7 +2093,6 @@ static struct clk dss_96m_fck = {
.name = "dss_96m_fck",
.ops = &clkops_omap2_dflt,
.parent = &omap_96m_fck,
- .init = &omap2_init_clk_clkdm,
.enable_reg = OMAP_CM_REGADDR(OMAP3430_DSS_MOD, CM_FCLKEN),
.enable_bit = OMAP3430_EN_TV_SHIFT,
.clkdm_name = "dss_clkdm",
@@ -2111,7 +2103,6 @@ static struct clk dss2_alwon_fck = {
.name = "dss2_alwon_fck",
.ops = &clkops_omap2_dflt,
.parent = &sys_ck,
- .init = &omap2_init_clk_clkdm,
.enable_reg = OMAP_CM_REGADDR(OMAP3430_DSS_MOD, CM_FCLKEN),
.enable_bit = OMAP3430_EN_DSS2_SHIFT,
.clkdm_name = "dss_clkdm",
@@ -2123,7 +2114,6 @@ static struct clk dss_ick_3430es1 = {
.name = "dss_ick",
.ops = &clkops_omap2_dflt,
.parent = &l4_ick,
- .init = &omap2_init_clk_clkdm,
.enable_reg = OMAP_CM_REGADDR(OMAP3430_DSS_MOD, CM_ICLKEN),
.enable_bit = OMAP3430_CM_ICLKEN_DSS_EN_DSS_SHIFT,
.clkdm_name = "dss_clkdm",
@@ -2135,7 +2125,6 @@ static struct clk dss_ick_3430es2 = {
.name = "dss_ick",
.ops = &clkops_omap3430es2_dss_usbhost_wait,
.parent = &l4_ick,
- .init = &omap2_init_clk_clkdm,
.enable_reg = OMAP_CM_REGADDR(OMAP3430_DSS_MOD, CM_ICLKEN),
.enable_bit = OMAP3430_CM_ICLKEN_DSS_EN_DSS_SHIFT,
.clkdm_name = "dss_clkdm",
@@ -2159,7 +2148,6 @@ static struct clk cam_ick = {
.name = "cam_ick",
.ops = &clkops_omap2_dflt,
.parent = &l4_ick,
- .init = &omap2_init_clk_clkdm,
.enable_reg = OMAP_CM_REGADDR(OMAP3430_CAM_MOD, CM_ICLKEN),
.enable_bit = OMAP3430_EN_CAM_SHIFT,
.clkdm_name = "cam_clkdm",
@@ -2170,7 +2158,6 @@ static struct clk csi2_96m_fck = {
.name = "csi2_96m_fck",
.ops = &clkops_omap2_dflt,
.parent = &core_96m_fck,
- .init = &omap2_init_clk_clkdm,
.enable_reg = OMAP_CM_REGADDR(OMAP3430_CAM_MOD, CM_FCLKEN),
.enable_bit = OMAP3430_EN_CSI2_SHIFT,
.clkdm_name = "cam_clkdm",
@@ -2183,7 +2170,6 @@ static struct clk usbhost_120m_fck = {
.name = "usbhost_120m_fck",
.ops = &clkops_omap2_dflt,
.parent = &dpll5_m2_ck,
- .init = &omap2_init_clk_clkdm,
.enable_reg = OMAP_CM_REGADDR(OMAP3430ES2_USBHOST_MOD, CM_FCLKEN),
.enable_bit = OMAP3430ES2_EN_USBHOST2_SHIFT,
.clkdm_name = "usbhost_clkdm",
@@ -2194,7 +2180,6 @@ static struct clk usbhost_48m_fck = {
.name = "usbhost_48m_fck",
.ops = &clkops_omap3430es2_dss_usbhost_wait,
.parent = &omap_48m_fck,
- .init = &omap2_init_clk_clkdm,
.enable_reg = OMAP_CM_REGADDR(OMAP3430ES2_USBHOST_MOD, CM_FCLKEN),
.enable_bit = OMAP3430ES2_EN_USBHOST1_SHIFT,
.clkdm_name = "usbhost_clkdm",
@@ -2206,7 +2191,6 @@ static struct clk usbhost_ick = {
.name = "usbhost_ick",
.ops = &clkops_omap3430es2_dss_usbhost_wait,
.parent = &l4_ick,
- .init = &omap2_init_clk_clkdm,
.enable_reg = OMAP_CM_REGADDR(OMAP3430ES2_USBHOST_MOD, CM_ICLKEN),
.enable_bit = OMAP3430ES2_EN_USBHOST_SHIFT,
.clkdm_name = "usbhost_clkdm",
@@ -2268,7 +2252,6 @@ static struct clk gpt1_fck = {
static struct clk wkup_32k_fck = {
.name = "wkup_32k_fck",
.ops = &clkops_null,
- .init = &omap2_init_clk_clkdm,
.parent = &omap_32k_fck,
.clkdm_name = "wkup_clkdm",
.recalc = &followparent_recalc,
@@ -2383,7 +2366,6 @@ static struct clk per_96m_fck = {
.name = "per_96m_fck",
.ops = &clkops_null,
.parent = &omap_96m_alwon_fck,
- .init = &omap2_init_clk_clkdm,
.clkdm_name = "per_clkdm",
.recalc = &followparent_recalc,
};
@@ -2392,7 +2374,6 @@ static struct clk per_48m_fck = {
.name = "per_48m_fck",
.ops = &clkops_null,
.parent = &omap_48m_fck,
- .init = &omap2_init_clk_clkdm,
.clkdm_name = "per_clkdm",
.recalc = &followparent_recalc,
};
diff --git a/arch/arm/mach-omap2/cm.c b/arch/arm/mach-omap2/cm.c
new file mode 100644
index 00000000000..8eb2dab8c7d
--- /dev/null
+++ b/arch/arm/mach-omap2/cm.c
@@ -0,0 +1,70 @@
+/*
+ * OMAP2/3 CM module functions
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ * Paul Walmsley
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/list.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/io.h>
+
+#include <asm/atomic.h>
+
+#include "cm.h"
+#include "cm-regbits-24xx.h"
+#include "cm-regbits-34xx.h"
+
+/* MAX_MODULE_READY_TIME: max milliseconds for module to leave idle */
+#define MAX_MODULE_READY_TIME 20000
+
+static const u8 cm_idlest_offs[] = {
+ CM_IDLEST1, CM_IDLEST2, OMAP2430_CM_IDLEST3
+};
+
+/**
+ * omap2_cm_wait_idlest_ready - wait for a module to leave idle or standby
+ * @prcm_mod: PRCM module offset
+ * @idlest_id: CM_IDLESTx register ID (i.e., x = 1, 2, 3)
+ * @idlest_shift: shift of the bit in the CM_IDLEST* register to check
+ *
+ * XXX document
+ */
+int omap2_cm_wait_module_ready(s16 prcm_mod, u8 idlest_id, u8 idlest_shift)
+{
+ int ena = 0, i = 0;
+ u8 cm_idlest_reg;
+ u32 mask;
+
+ if (!idlest_id || (idlest_id > ARRAY_SIZE(cm_idlest_offs)))
+ return -EINVAL;
+
+ cm_idlest_reg = cm_idlest_offs[idlest_id - 1];
+
+ if (cpu_is_omap24xx())
+ ena = idlest_shift;
+ else if (cpu_is_omap34xx())
+ ena = 0;
+ else
+ BUG();
+
+ mask = 1 << idlest_shift;
+
+ /* XXX should be OMAP2 CM */
+ while (((cm_read_mod_reg(prcm_mod, cm_idlest_reg) & mask) != ena) &&
+ (i++ < MAX_MODULE_READY_TIME))
+ udelay(1);
+
+ return (i < MAX_MODULE_READY_TIME) ? 0 : -EBUSY;
+}
+
diff --git a/arch/arm/mach-omap2/cm.h b/arch/arm/mach-omap2/cm.h
index 18d9a121aa7..cfd0b726ba4 100644
--- a/arch/arm/mach-omap2/cm.h
+++ b/arch/arm/mach-omap2/cm.h
@@ -98,6 +98,10 @@ extern u32 cm_read_mod_reg(s16 module, u16 idx);
extern void cm_write_mod_reg(u32 val, s16 module, u16 idx);
extern u32 cm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module, s16 idx);
+extern int omap2_cm_wait_module_ready(s16 prcm_mod, u8 idlest_id,
+ u8 idlest_shift);
+extern int omap4_cm_wait_module_ready(u32 prcm_mod, u8 prcm_dev_offs);
+
static inline u32 cm_set_mod_reg_bits(u32 bits, s16 module, s16 idx)
{
return cm_rmw_mod_reg_bits(bits, bits, module, idx);
diff --git a/arch/arm/mach-omap2/cm4xxx.c b/arch/arm/mach-omap2/cm4xxx.c
new file mode 100644
index 00000000000..e4ebd6d5313
--- /dev/null
+++ b/arch/arm/mach-omap2/cm4xxx.c
@@ -0,0 +1,68 @@
+/*
+ * OMAP4 CM module functions
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ * Paul Walmsley
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/list.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/io.h>
+
+#include <asm/atomic.h>
+
+#include "cm.h"
+#include "cm-regbits-4xxx.h"
+
+/* XXX move this to cm.h */
+/* MAX_MODULE_READY_TIME: max milliseconds for module to leave idle */
+#define MAX_MODULE_READY_TIME 20000
+
+/*
+ * OMAP4_PRCM_CM_CLKCTRL_IDLEST_MASK: isolates the IDLEST field in the
+ * CM_CLKCTRL register.
+ */
+#define OMAP4_PRCM_CM_CLKCTRL_IDLEST_MASK (0x2 << 16)
+
+/*
+ * OMAP4 prcm_mod u32 fields contain packed data: the CM ID in bit 16 and
+ * the PRCM module offset address (from the CM module base) in bits 15-0.
+ */
+#define OMAP4_PRCM_MOD_CM_ID_SHIFT 16
+#define OMAP4_PRCM_MOD_OFFS_MASK 0xffff
+
+/**
+ * omap4_cm_wait_idlest_ready - wait for a module to leave idle or standby
+ * @prcm_mod: PRCM module offset (XXX example)
+ * @prcm_dev_offs: PRCM device offset (e.g. MCASP XXX example)
+ *
+ * XXX document
+ */
+int omap4_cm_wait_idlest_ready(u32 prcm_mod, u8 prcm_dev_offs)
+{
+ int i = 0;
+ u8 cm_id;
+ u16 prcm_mod_offs;
+ u32 mask = OMAP4_PRCM_CM_CLKCTRL_IDLEST_MASK;
+
+ cm_id = prcm_mod >> OMAP4_PRCM_MOD_CM_ID_SHIFT;
+ prcm_mod_offs = prcm_mod & OMAP4_PRCM_MOD_OFFS_MASK;
+
+ while (((omap4_cm_read_mod_reg(cm_id, prcm_mod_offs, prcm_dev_offs,
+ OMAP4_CM_CLKCTRL_DREG) & mask) != 0) &&
+ (i++ < MAX_MODULE_READY_TIME))
+ udelay(1);
+
+ return (i < MAX_MODULE_READY_TIME) ? 0 : -EBUSY;
+}
+
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index e9b9bcb19b4..7574b6f20e8 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -32,17 +32,23 @@
#include <mach/sram.h>
#include <mach/sdrc.h>
#include <mach/gpmc.h>
+#include <mach/serial.h>
#ifndef CONFIG_ARCH_OMAP4 /* FIXME: Remove this once clkdev is ready */
#include "clock.h"
+#include <mach/omap-pm.h>
#include <mach/powerdomain.h>
-
#include "powerdomains.h"
#include <mach/clockdomain.h>
#include "clockdomains.h"
#endif
+#include <mach/omap_hwmod.h>
+#include "omap_hwmod_2420.h"
+#include "omap_hwmod_2430.h"
+#include "omap_hwmod_34xx.h"
+
/*
* The machine specific code may provide the extra mapping besides the
* default mapping provided here.
@@ -279,11 +285,26 @@ static int __init _omap2_init_reprogram_sdrc(void)
void __init omap2_init_common_hw(struct omap_sdrc_params *sdrc_cs0,
struct omap_sdrc_params *sdrc_cs1)
{
+ struct omap_hwmod **hwmods = NULL;
+
+ if (cpu_is_omap2420())
+ hwmods = omap2420_hwmods;
+ else if (cpu_is_omap2430())
+ hwmods = omap2430_hwmods;
+ else if (cpu_is_omap34xx())
+ hwmods = omap34xx_hwmods;
+
+ omap_hwmod_init(hwmods);
omap2_mux_init();
#ifndef CONFIG_ARCH_OMAP4 /* FIXME: Remove this once the clkdev is ready */
+ /* The OPP tables have to be registered before a clk init */
+ omap_pm_if_early_init(mpu_opps, dsp_opps, l3_opps);
pwrdm_init(powerdomains_omap);
clkdm_init(clockdomains_omap, clkdm_pwrdm_autodeps);
omap2_clk_init();
+ omap_serial_early_init();
+ omap_hwmod_late_init();
+ omap_pm_if_init();
omap2_sdrc_init(sdrc_cs0, sdrc_cs1);
_omap2_init_reprogram_sdrc();
#endif
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
new file mode 100644
index 00000000000..d2e0f1c9596
--- /dev/null
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -0,0 +1,1554 @@
+/*
+ * omap_hwmod implementation for OMAP2/3/4
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ * Paul Walmsley
+ * With fixes and testing from Kevin Hilman
+ *
+ * Created in collaboration with (alphabetical order): Benoit Cousson,
+ * Kevin Hilman, Tony Lindgren, Rajendra Nayak, Vikram Pandita, Sakari
+ * Poussa, Anand Sawant, Santosh Shilimkar, Richard Woodruff
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This code manages "OMAP modules" (on-chip devices) and their
+ * integration with Linux device driver and bus code.
+ *
+ * References:
+ * - OMAP2420 Multimedia Processor Silicon Revision 2.1.1, 2.2 (SWPU064)
+ * - OMAP2430 Multimedia Device POP Silicon Revision 2.1 (SWPU090)
+ * - OMAP34xx Multimedia Device Silicon Revision 3.1 (SWPU108)
+ * - OMAP4430 Multimedia Device Silicon Revision 1.0 (SWPU140)
+ * - Open Core Protocol Specification 2.2
+ *
+ * To do:
+ * - pin mux handling
+ * - handle IO mapping
+ * - bus throughput & module latency measurement code
+ *
+ * XXX add tests at the beginning of each function to ensure the hwmod is
+ * in the appropriate state
+ * XXX error return values should be checked to ensure that they are
+ * appropriate
+ */
+#undef DEBUG
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/bootmem.h>
+
+#include <mach/cpu.h>
+#include <mach/clockdomain.h>
+#include <mach/powerdomain.h>
+#include <mach/clock.h>
+#include <mach/omap_hwmod.h>
+
+#include "cm.h"
+
+/* Maximum microseconds to wait for OMAP module to reset */
+#define MAX_MODULE_RESET_WAIT 10000
+
+/* Name of the OMAP hwmod for the MPU */
+#define MPU_INITIATOR_NAME "mpu_hwmod"
+
+/* omap_hwmod_list contains all registered struct omap_hwmods */
+static LIST_HEAD(omap_hwmod_list);
+
+static DEFINE_MUTEX(omap_hwmod_mutex);
+
+/* mpu_oh: used to add/remove MPU initiator from sleepdep list */
+static struct omap_hwmod *mpu_oh;
+
+/* inited: 0 if omap_hwmod_init() has not yet been called; 1 otherwise */
+static u8 inited;
+
+
+/* Private functions */
+
+/**
+ * _update_sysc_cache - return the module OCP_SYSCONFIG register, keep copy
+ * @oh: struct omap_hwmod *
+ *
+ * Load the current value of the hwmod OCP_SYSCONFIG register into the
+ * struct omap_hwmod for later use. Returns -EINVAL if the hwmod has no
+ * OCP_SYSCONFIG register or 0 upon success.
+ */
+static int _update_sysc_cache(struct omap_hwmod *oh)
+{
+ if (!oh->sysconfig) {
+ WARN(!oh->sysconfig, "omap_hwmod: %s: cannot read "
+ "OCP_SYSCONFIG: not defined on hwmod\n", oh->name);
+ return -EINVAL;
+ }
+
+ /* XXX ensure module interface clock is up */
+
+ oh->_sysc_cache = omap_hwmod_readl(oh, oh->sysconfig->sysc_offs);
+
+ oh->_int_flags |= _HWMOD_SYSCONFIG_LOADED;
+
+ return 0;
+}
+
+/**
+ * _write_sysconfig - write a value to the module's OCP_SYSCONFIG register
+ * @v: OCP_SYSCONFIG value to write
+ * @oh: struct omap_hwmod *
+ *
+ * Write @v into the module OCP_SYSCONFIG register, if it has one. No
+ * return value.
+ */
+static void _write_sysconfig(u32 v, struct omap_hwmod *oh)
+{
+ if (!oh->sysconfig) {
+ WARN(!oh->sysconfig, "omap_hwmod: %s: cannot write "
+ "OCP_SYSCONFIG: not defined on hwmod\n", oh->name);
+ return;
+ }
+
+ /* XXX ensure module interface clock is up */
+
+ if (oh->_sysc_cache != v) {
+ oh->_sysc_cache = v;
+ omap_hwmod_writel(v, oh, oh->sysconfig->sysc_offs);
+ }
+}
+
+/**
+ * _set_master_standbymode: set the OCP_SYSCONFIG MIDLEMODE field in @v
+ * @oh: struct omap_hwmod *
+ * @standbymode: MIDLEMODE field bits
+ * @v: pointer to register contents to modify
+ *
+ * Update the master standby mode bits in @v to be @standbymode for
+ * the @oh hwmod. Does not write to the hardware. Returns -EINVAL
+ * upon error or 0 upon success.
+ */
+static int _set_master_standbymode(struct omap_hwmod *oh, u8 standbymode,
+ u32 *v)
+{
+ if (!oh->sysconfig ||
+ !(oh->sysconfig->sysc_flags & SYSC_HAS_MIDLEMODE))
+ return -EINVAL;
+
+ *v &= ~SYSC_MIDLEMODE_MASK;
+ *v |= __ffs(standbymode) << SYSC_MIDLEMODE_SHIFT;
+
+ return 0;
+}
+
+/**
+ * _set_slave_idlemode: set the OCP_SYSCONFIG SIDLEMODE field in @v
+ * @oh: struct omap_hwmod *
+ * @idlemode: SIDLEMODE field bits
+ * @v: pointer to register contents to modify
+ *
+ * Update the slave idle mode bits in @v to be @idlemode for the @oh
+ * hwmod. Does not write to the hardware. Returns -EINVAL upon error
+ * or 0 upon success.
+ */
+static int _set_slave_idlemode(struct omap_hwmod *oh, u8 idlemode, u32 *v)
+{
+ if (!oh->sysconfig ||
+ !(oh->sysconfig->sysc_flags & SYSC_HAS_SIDLEMODE))
+ return -EINVAL;
+
+ *v &= ~SYSC_SIDLEMODE_MASK;
+ *v |= __ffs(idlemode) << SYSC_SIDLEMODE_SHIFT;
+
+ return 0;
+}
+
+/**
+ * _set_clockactivity: set OCP_SYSCONFIG.CLOCKACTIVITY bits in @v
+ * @oh: struct omap_hwmod *
+ * @clockact: CLOCKACTIVITY field bits
+ * @v: pointer to register contents to modify
+ *
+ * Update the clockactivity mode bits in @v to be @clockact for the
+ * @oh hwmod. Used for additional powersaving on some modules. Does
+ * not write to the hardware. Returns -EINVAL upon error or 0 upon
+ * success.
+ */
+static int _set_clockactivity(struct omap_hwmod *oh, u8 clockact, u32 *v)
+{
+ if (!oh->sysconfig ||
+ !(oh->sysconfig->sysc_flags & SYSC_HAS_CLOCKACTIVITY))
+ return -EINVAL;
+
+ *v &= ~SYSC_CLOCKACTIVITY_MASK;
+ *v |= clockact << SYSC_CLOCKACTIVITY_SHIFT;
+
+ return 0;
+}
+
+/**
+ * _set_softreset: set OCP_SYSCONFIG.CLOCKACTIVITY bits in @v
+ * @oh: struct omap_hwmod *
+ * @v: pointer to register contents to modify
+ *
+ * Set the SOFTRESET bit in @v for hwmod @oh. Returns -EINVAL upon
+ * error or 0 upon success.
+ */
+static int _set_softreset(struct omap_hwmod *oh, u32 *v)
+{
+ if (!oh->sysconfig ||
+ !(oh->sysconfig->sysc_flags & SYSC_HAS_SOFTRESET))
+ return -EINVAL;
+
+ *v |= SYSC_SOFTRESET_MASK;
+
+ return 0;
+}
+
+/**
+ * _enable_wakeup: set OCP_SYSCONFIG.ENAWAKEUP bit in the hardware
+ * @oh: struct omap_hwmod *
+ *
+ * Allow the hardware module @oh to send wakeups. Returns -EINVAL
+ * upon error or 0 upon success.
+ */
+static int _enable_wakeup(struct omap_hwmod *oh)
+{
+ u32 v;
+
+ if (!oh->sysconfig ||
+ !(oh->sysconfig->sysc_flags & SYSC_HAS_ENAWAKEUP))
+ return -EINVAL;
+
+ v = oh->_sysc_cache;
+ v |= SYSC_ENAWAKEUP_MASK;
+ _write_sysconfig(v, oh);
+
+ /* XXX test pwrdm_get_wken for this hwmod's subsystem */
+
+ oh->_int_flags |= _HWMOD_WAKEUP_ENABLED;
+
+ return 0;
+}
+
+/**
+ * _disable_wakeup: clear OCP_SYSCONFIG.ENAWAKEUP bit in the hardware
+ * @oh: struct omap_hwmod *
+ *
+ * Prevent the hardware module @oh to send wakeups. Returns -EINVAL
+ * upon error or 0 upon success.
+ */
+static int _disable_wakeup(struct omap_hwmod *oh)
+{
+ u32 v;
+
+ if (!oh->sysconfig ||
+ !(oh->sysconfig->sysc_flags & SYSC_HAS_ENAWAKEUP))
+ return -EINVAL;
+
+ v = oh->_sysc_cache;
+ v &= ~SYSC_ENAWAKEUP_MASK;
+ _write_sysconfig(v, oh);
+
+ /* XXX test pwrdm_get_wken for this hwmod's subsystem */
+
+ oh->_int_flags &= ~_HWMOD_WAKEUP_ENABLED;
+
+ return 0;
+}
+
+/**
+ * _add_initiator_dep: prevent @oh from smart-idling while @init_oh is active
+ * @oh: struct omap_hwmod *
+ *
+ * Prevent the hardware module @oh from entering idle while the
+ * hardare module initiator @init_oh is active. Useful when a module
+ * will be accessed by a particular initiator (e.g., if a module will
+ * be accessed by the IVA, there should be a sleepdep between the IVA
+ * initiator and the module). Only applies to modules in smart-idle
+ * mode. Returns -EINVAL upon error or passes along
+ * pwrdm_add_sleepdep() value upon success.
+ */
+static int _add_initiator_dep(struct omap_hwmod *oh, struct omap_hwmod *init_oh)
+{
+ if (!oh->_clk)
+ return -EINVAL;
+
+ return pwrdm_add_sleepdep(oh->_clk->clkdm->pwrdm.ptr,
+ init_oh->_clk->clkdm->pwrdm.ptr);
+}
+
+/**
+ * _del_initiator_dep: allow @oh to smart-idle even if @init_oh is active
+ * @oh: struct omap_hwmod *
+ *
+ * Allow the hardware module @oh to enter idle while the hardare
+ * module initiator @init_oh is active. Useful when a module will not
+ * be accessed by a particular initiator (e.g., if a module will not
+ * be accessed by the IVA, there should be no sleepdep between the IVA
+ * initiator and the module). Only applies to modules in smart-idle
+ * mode. Returns -EINVAL upon error or passes along
+ * pwrdm_add_sleepdep() value upon success.
+ */
+static int _del_initiator_dep(struct omap_hwmod *oh, struct omap_hwmod *init_oh)
+{
+ if (!oh->_clk)
+ return -EINVAL;
+
+ return pwrdm_del_sleepdep(oh->_clk->clkdm->pwrdm.ptr,
+ init_oh->_clk->clkdm->pwrdm.ptr);
+}
+
+/**
+ * _init_main_clk - get a struct clk * for the the hwmod's main functional clk
+ * @oh: struct omap_hwmod *
+ *
+ * Called from _init_clocks(). Populates the @oh _clk (main
+ * functional clock pointer) if a main_clk is present. Returns 0 on
+ * success or -EINVAL on error.
+ */
+static int _init_main_clk(struct omap_hwmod *oh)
+{
+ struct clk *c;
+ int ret = 0;
+
+ if (!oh->clkdev_con_id)
+ return 0;
+
+ c = clk_get_sys(oh->clkdev_dev_id, oh->clkdev_con_id);
+ WARN(IS_ERR(c), "omap_hwmod: %s: cannot clk_get main_clk %s.%s\n",
+ oh->name, oh->clkdev_dev_id, oh->clkdev_con_id);
+ if (IS_ERR(c))
+ ret = -EINVAL;
+ oh->_clk = c;
+
+ return ret;
+}
+
+/**
+ * _init_interface_clk - get a struct clk * for the the hwmod's interface clks
+ * @oh: struct omap_hwmod *
+ *
+ * Called from _init_clocks(). Populates the @oh OCP slave interface
+ * clock pointers. Returns 0 on success or -EINVAL on error.
+ */
+static int _init_interface_clks(struct omap_hwmod *oh)
+{
+ struct omap_hwmod_ocp_if *os;
+ struct clk *c;
+ int i;
+ int ret = 0;
+
+ if (oh->slaves_cnt == 0)
+ return 0;
+
+ for (i = 0, os = *oh->slaves; i < oh->slaves_cnt; i++, os++) {
+ if (!os->clkdev_con_id)
+ continue;
+
+ c = clk_get_sys(os->clkdev_dev_id, os->clkdev_con_id);
+ WARN(IS_ERR(c), "omap_hwmod: %s: cannot clk_get "
+ "interface_clk %s.%s\n", oh->name,
+ os->clkdev_dev_id, os->clkdev_con_id);
+ if (IS_ERR(c))
+ ret = -EINVAL;
+ os->_clk = c;
+ }
+
+ return ret;
+}
+
+/**
+ * _init_opt_clk - get a struct clk * for the the hwmod's optional clocks
+ * @oh: struct omap_hwmod *
+ *
+ * Called from _init_clocks(). Populates the @oh omap_hwmod_opt_clk
+ * clock pointers. Returns 0 on success or -EINVAL on error.
+ */
+static int _init_opt_clks(struct omap_hwmod *oh)
+{
+ struct omap_hwmod_opt_clk *oc;
+ struct clk *c;
+ int i;
+ int ret = 0;
+
+ for (i = oh->opt_clks_cnt, oc = oh->opt_clks; i > 0; i--, oc++) {
+ c = clk_get_sys(oc->clkdev_dev_id, oc->clkdev_con_id);
+ WARN(IS_ERR(c), "omap_hwmod: %s: cannot clk_get opt_clk "
+ "%s.%s\n", oh->name, oc->clkdev_dev_id,
+ oc->clkdev_con_id);
+ if (IS_ERR(c))
+ ret = -EINVAL;
+ oc->_clk = c;
+ }
+
+ return ret;
+}
+
+/**
+ * _enable_clocks - enable hwmod main clock and interface clocks
+ * @oh: struct omap_hwmod *
+ *
+ * Enables all clocks necessary for register reads and writes to succeed
+ * on the hwmod @oh. Returns 0.
+ */
+static int _enable_clocks(struct omap_hwmod *oh)
+{
+ struct omap_hwmod_ocp_if *os;
+ int i;
+
+ pr_debug("omap_hwmod: %s: enabling clocks\n", oh->name);
+
+ if (oh->_clk && !IS_ERR(oh->_clk))
+ clk_enable(oh->_clk);
+
+ if (oh->slaves_cnt > 0) {
+ for (i = 0, os = *oh->slaves; i < oh->slaves_cnt; i++, os++) {
+ struct clk *c = os->_clk;
+
+ if (c && !IS_ERR(c) && (os->flags & OCPIF_SWSUP_IDLE))
+ clk_enable(c);
+ }
+ }
+
+ /* The opt clocks are controlled by the device driver. */
+
+ return 0;
+}
+
+/**
+ * _disable_clocks - disable hwmod main clock and interface clocks
+ * @oh: struct omap_hwmod *
+ *
+ * Disables the hwmod @oh main functional and interface clocks. Returns 0.
+ */
+static int _disable_clocks(struct omap_hwmod *oh)
+{
+ struct omap_hwmod_ocp_if *os;
+ int i;
+
+ pr_debug("omap_hwmod: %s: disabling clocks\n", oh->name);
+
+ if (oh->_clk && !IS_ERR(oh->_clk))
+ clk_disable(oh->_clk);
+
+ if (oh->slaves_cnt > 0) {
+ for (i = 0, os = *oh->slaves; i < oh->slaves_cnt; i++, os++) {
+ struct clk *c = os->_clk;
+
+ if (c && !IS_ERR(c) && (os->flags & OCPIF_SWSUP_IDLE))
+ clk_disable(c);
+ }
+ }
+
+ /* The opt clocks are controlled by the device driver. */
+
+ return 0;
+}
+
+/**
+ * _find_mpu_port_index - find hwmod OCP slave port ID intended for MPU use
+ * @oh: struct omap_hwmod *
+ *
+ * Returns the array index of the OCP slave port that the MPU
+ * addresses the device on, or -EINVAL upon error or not found.
+ */
+static int _find_mpu_port_index(struct omap_hwmod *oh)
+{
+ struct omap_hwmod_ocp_if *os;
+ int i;
+ int found = 0;
+
+ if (!oh || oh->slaves_cnt == 0)
+ return -EINVAL;
+
+ for (i = 0, os = *oh->slaves; i < oh->slaves_cnt; i++, os++) {
+ if (os->user & OCP_USER_MPU) {
+ found = 1;
+ break;
+ }
+ }
+
+ if (found)
+ pr_debug("omap_hwmod: %s: MPU OCP slave port ID %d\n",
+ oh->name, i);
+ else
+ pr_debug("omap_hwmod: %s: no MPU OCP slave port found\n",
+ oh->name);
+
+ return (found) ? i : -EINVAL;
+}
+
+/**
+ * _find_mpu_rt_base - find hwmod register target base addr accessible by MPU
+ * @oh: struct omap_hwmod *
+ *
+ * Return the virtual address of the base of the register target of
+ * device @oh, or NULL on error.
+ */
+static void __iomem *_find_mpu_rt_base(struct omap_hwmod *oh, u8 index)
+{
+ struct omap_hwmod_ocp_if *os;
+ struct omap_hwmod_addr_space *mem;
+ int i;
+ int found = 0;
+
+ if (!oh || oh->slaves_cnt == 0)
+ return NULL;
+
+ os = *oh->slaves + index;
+
+ for (i = 0, mem = os->addr; i < os->addr_cnt; i++, mem++) {
+ if (mem->flags & ADDR_TYPE_RT) {
+ found = 1;
+ break;
+ }
+ }
+
+ /* XXX use ioremap() instead? */
+
+ if (found)
+ pr_debug("omap_hwmod: %s: MPU register target at va %p\n",
+ oh->name, OMAP2_IO_ADDRESS(mem->pa_start));
+ else
+ pr_debug("omap_hwmod: %s: no MPU register target found\n",
+ oh->name);
+
+ return (found) ? OMAP2_IO_ADDRESS(mem->pa_start) : NULL;
+}
+
+/**
+ * _sysc_enable - try to bring a module out of idle via OCP_SYSCONFIG
+ * @oh: struct omap_hwmod *
+ *
+ * If module is marked as SWSUP_SIDLE, force the module out of slave
+ * idle; otherwise, configure it for smart-idle. If module is marked
+ * as SWSUP_MSUSPEND, force the module out of master standby;
+ * otherwise, configure it for smart-standby. No return value.
+ */
+static void _sysc_enable(struct omap_hwmod *oh)
+{
+ u8 idlemode;
+ u32 v;
+
+ if (!oh->sysconfig)
+ return;
+
+ v = oh->_sysc_cache;
+
+ if (oh->sysconfig->sysc_flags & SYSC_HAS_SIDLEMODE) {
+ idlemode = (oh->flags & HWMOD_SWSUP_SIDLE) ?
+ HWMOD_IDLEMODE_NO : HWMOD_IDLEMODE_SMART;
+ _set_slave_idlemode(oh, idlemode, &v);
+ }
+
+ if (oh->sysconfig->sysc_flags & SYSC_HAS_MIDLEMODE) {
+ idlemode = (oh->flags & HWMOD_SWSUP_MSTANDBY) ?
+ HWMOD_IDLEMODE_NO : HWMOD_IDLEMODE_SMART;
+ _set_master_standbymode(oh, idlemode, &v);
+ }
+
+ /* XXX OCP AUTOIDLE bit? */
+
+ if (oh->flags & HWMOD_SET_DEFAULT_CLOCKACT &&
+ oh->sysconfig->sysc_flags & SYSC_HAS_CLOCKACTIVITY)
+ _set_clockactivity(oh, oh->sysconfig->clockact, &v);
+
+ _write_sysconfig(v, oh);
+}
+
+/**
+ * _sysc_idle - try to put a module into idle via OCP_SYSCONFIG
+ * @oh: struct omap_hwmod *
+ *
+ * If module is marked as SWSUP_SIDLE, force the module into slave
+ * idle; otherwise, configure it for smart-idle. If module is marked
+ * as SWSUP_MSUSPEND, force the module into master standby; otherwise,
+ * configure it for smart-standby. No return value.
+ */
+static void _sysc_idle(struct omap_hwmod *oh)
+{
+ u8 idlemode;
+ u32 v;
+
+ if (!oh->sysconfig)
+ return;
+
+ v = oh->_sysc_cache;
+
+ if (oh->sysconfig->sysc_flags & SYSC_HAS_SIDLEMODE) {
+ idlemode = (oh->flags & HWMOD_SWSUP_SIDLE) ?
+ HWMOD_IDLEMODE_FORCE : HWMOD_IDLEMODE_SMART;
+ _set_slave_idlemode(oh, idlemode, &v);
+ }
+
+ if (oh->sysconfig->sysc_flags & SYSC_HAS_MIDLEMODE) {
+ idlemode = (oh->flags & HWMOD_SWSUP_MSTANDBY) ?
+ HWMOD_IDLEMODE_FORCE : HWMOD_IDLEMODE_SMART;
+ _set_master_standbymode(oh, idlemode, &v);
+ }
+
+ _write_sysconfig(v, oh);
+}
+
+/**
+ * _sysc_shutdown - force a module into idle via OCP_SYSCONFIG
+ * @oh: struct omap_hwmod *
+ *
+ * Force the module into slave idle and master suspend. No return
+ * value.
+ */
+static void _sysc_shutdown(struct omap_hwmod *oh)
+{
+ u32 v;
+
+ if (!oh->sysconfig)
+ return;
+
+ v = oh->_sysc_cache;
+
+ if (oh->sysconfig->sysc_flags & SYSC_HAS_SIDLEMODE)
+ _set_slave_idlemode(oh, HWMOD_IDLEMODE_FORCE, &v);
+
+ if (oh->sysconfig->sysc_flags & SYSC_HAS_MIDLEMODE)
+ _set_master_standbymode(oh, HWMOD_IDLEMODE_FORCE, &v);
+
+ /* XXX clear OCP AUTOIDLE bit? */
+
+ _write_sysconfig(v, oh);
+}
+
+/**
+ * _lookup - find an omap_hwmod by name
+ * @name: find an omap_hwmod by name
+ *
+ * Return a pointer to an omap_hwmod by name, or NULL if not found.
+ * Caller must hold omap_hwmod_mutex.
+ */
+static struct omap_hwmod *_lookup(const char *name)
+{
+ struct omap_hwmod *oh, *temp_oh;
+
+ oh = NULL;
+
+ list_for_each_entry(temp_oh, &omap_hwmod_list, node) {
+ if (!strcmp(name, temp_oh->name)) {
+ oh = temp_oh;
+ break;
+ }
+ }
+
+ return oh;
+}
+
+/**
+ * _init_clocks - clk_get() all clocks associated with this hwmod
+ * @oh: struct omap_hwmod *
+ *
+ * Called by omap_hwmod_late_init() (after omap2_clk_init()).
+ * Resolves all clock names embedded in the hwmod. Must be called
+ * with omap_hwmod_mutex held. Returns -EINVAL if the omap_hwmod
+ * has not yet been registered or if the clocks have already been
+ * initialized, 0 on success, or a non-zero error on failure.
+ */
+static int _init_clocks(struct omap_hwmod *oh)
+{
+ int ret = 0;
+
+ if (!oh || (oh->_state != _HWMOD_STATE_REGISTERED))
+ return -EINVAL;
+
+ pr_debug("omap_hwmod: %s: looking up clocks\n", oh->name);
+
+ ret |= _init_main_clk(oh);
+ ret |= _init_interface_clks(oh);
+ ret |= _init_opt_clks(oh);
+
+ oh->_state = _HWMOD_STATE_CLKS_INITED;
+
+ return ret;
+}
+
+/**
+ * _wait_target_ready - wait for a module to leave slave idle
+ * @oh: struct omap_hwmod *
+ *
+ * Wait for a module @oh to leave slave idle. Returns 0 if the module
+ * does not have an IDLEST bit or if the module successfully leaves
+ * slave idle; otherwise, pass along the return value of the
+ * appropriate *_cm_wait_module_ready() function.
+ */
+static int _wait_target_ready(struct omap_hwmod *oh)
+{
+ struct omap_hwmod_ocp_if *os;
+ int ret;
+
+ if (!oh)
+ return -EINVAL;
+
+ if (oh->_int_flags & _HWMOD_NO_MPU_PORT)
+ return 0;
+
+ os = *oh->slaves + oh->_mpu_port_index;
+
+ if (!(os->flags & OCPIF_HAS_IDLEST))
+ return 0;
+
+ /* XXX check module SIDLEMODE */
+
+ /* XXX check clock enable states */
+
+ if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
+ ret = omap2_cm_wait_module_ready(oh->prcm.omap2.module_offs,
+ oh->prcm.omap2.idlest_reg_id,
+ oh->prcm.omap2.idlest_idle_bit);
+#if 0
+ } else if (cpu_is_omap44xx()) {
+ ret = omap4_cm_wait_module_ready(oh->prcm.omap4.module_offs,
+ oh->prcm.omap4.device_offs);
+#endif
+ } else {
+ BUG();
+ };
+
+ return ret;
+}
+
+/**
+ * _reset - reset an omap_hwmod
+ * @oh: struct omap_hwmod *
+ *
+ * Resets an omap_hwmod @oh via the OCP_SYSCONFIG bit. hwmod must be
+ * enabled for this to work. Must be called with omap_hwmod_mutex
+ * held. Returns -EINVAL if the hwmod cannot be reset this way or if
+ * the hwmod is in the wrong state, -ETIMEDOUT if the module did not
+ * reset in time, or 0 upon success.
+ */
+static int _reset(struct omap_hwmod *oh)
+{
+ u32 r, v;
+ int c;
+
+ if (!oh->sysconfig ||
+ !(oh->sysconfig->sysc_flags & SYSC_HAS_SOFTRESET) ||
+ (oh->sysconfig->sysc_flags & SYSS_MISSING))
+ return -EINVAL;
+
+ /* clocks must be on for this operation */
+ if (oh->_state != _HWMOD_STATE_ENABLED) {
+ WARN(1, "omap_hwmod: %s: reset can only be entered from "
+ "enabled state\n", oh->name);
+ return -EINVAL;
+ }
+
+ pr_debug("omap_hwmod: %s: resetting\n", oh->name);
+
+ v = oh->_sysc_cache;
+ r = _set_softreset(oh, &v);
+ if (r)
+ return r;
+ _write_sysconfig(v, oh);
+
+ c = 0;
+ while (c < MAX_MODULE_RESET_WAIT &&
+ !(omap_hwmod_readl(oh, oh->sysconfig->syss_offs) &
+ SYSS_RESETDONE_MASK)) {
+ udelay(1);
+ c++;
+ }
+
+ if (c == MAX_MODULE_RESET_WAIT)
+ WARN(1, "omap_hwmod: %s: failed to reset in %d usec\n",
+ oh->name, MAX_MODULE_RESET_WAIT);
+ else
+ pr_debug("omap_hwmod: %s: reset in %d usec\n", oh->name, c);
+
+ /*
+ * XXX add _HWMOD_STATE_WEDGED for modules that don't come back from
+ * _wait_target_ready() or _reset()
+ */
+
+ return (c == MAX_MODULE_RESET_WAIT) ? -ETIMEDOUT : 0;
+}
+
+/**
+ * _enable - enable an omap_hwmod
+ * @oh: struct omap_hwmod *
+ *
+ * Enables an omap_hwmod @oh such that the MPU can access the hwmod's
+ * register target. Must be called with omap_hwmod_mutex held.
+ * Returns -EINVAL if the hwmod is in the wrong state or passes along
+ * the return value of _wait_target_ready().
+ */
+static int _enable(struct omap_hwmod *oh)
+{
+ int r;
+
+ if (oh->_state != _HWMOD_STATE_INITIALIZED &&
+ oh->_state != _HWMOD_STATE_IDLE &&
+ oh->_state != _HWMOD_STATE_DISABLED) {
+ WARN(1, "omap_hwmod: %s: enabled state can only be entered "
+ "from initialized, idle, or disabled state\n", oh->name);
+ return -EINVAL;
+ }
+
+ pr_debug("omap_hwmod: %s: enabling\n", oh->name);
+
+ /* XXX mux balls */
+
+ _add_initiator_dep(oh, mpu_oh);
+ _enable_clocks(oh);
+
+ if (oh->sysconfig) {
+ if (!(oh->_int_flags & _HWMOD_SYSCONFIG_LOADED))
+ _update_sysc_cache(oh);
+ _sysc_enable(oh);
+ }
+
+ r = _wait_target_ready(oh);
+ if (!r)
+ oh->_state = _HWMOD_STATE_ENABLED;
+
+ return r;
+}
+
+/**
+ * _idle - idle an omap_hwmod
+ * @oh: struct omap_hwmod *
+ *
+ * Idles an omap_hwmod @oh. This should be called once the hwmod has
+ * no further work. Returns -EINVAL if the hwmod is in the wrong
+ * state or returns 0.
+ */
+static int _idle(struct omap_hwmod *oh)
+{
+ if (oh->_state != _HWMOD_STATE_ENABLED) {
+ WARN(1, "omap_hwmod: %s: idle state can only be entered from "
+ "enabled state\n", oh->name);
+ return -EINVAL;
+ }
+
+ pr_debug("omap_hwmod: %s: idling\n", oh->name);
+
+ if (oh->sysconfig)
+ _sysc_idle(oh);
+ _del_initiator_dep(oh, mpu_oh);
+ _disable_clocks(oh);
+
+ oh->_state = _HWMOD_STATE_IDLE;
+
+ return 0;
+}
+
+/**
+ * _shutdown - shutdown an omap_hwmod
+ * @oh: struct omap_hwmod *
+ *
+ * Shut down an omap_hwmod @oh. This should be called when the driver
+ * used for the hwmod is removed or unloaded or if the driver is not
+ * used by the system. Returns -EINVAL if the hwmod is in the wrong
+ * state or returns 0.
+ */
+static int _shutdown(struct omap_hwmod *oh)
+{
+ if (oh->_state != _HWMOD_STATE_IDLE &&
+ oh->_state != _HWMOD_STATE_ENABLED) {
+ WARN(1, "omap_hwmod: %s: disabled state can only be entered "
+ "from idle, or enabled state\n", oh->name);
+ return -EINVAL;
+ }
+
+ pr_debug("omap_hwmod: %s: disabling\n", oh->name);
+
+ if (oh->sysconfig)
+ _sysc_shutdown(oh);
+ _del_initiator_dep(oh, mpu_oh);
+ /* XXX what about the other system initiators here? DMA, tesla, d2d */
+ _disable_clocks(oh);
+ /* XXX Should this code also force-disable the optional clocks? */
+
+ /* XXX mux any associated balls to safe mode */
+
+ oh->_state = _HWMOD_STATE_DISABLED;
+
+ return 0;
+}
+
+/**
+ * _write_clockact_lock - set the module's clockactivity bits
+ * @oh: struct omap_hwmod *
+ * @clockact: CLOCKACTIVITY field bits
+ *
+ * Writes the CLOCKACTIVITY bits @clockact to the hwmod @oh
+ * OCP_SYSCONFIG register. Returns -EINVAL if the hwmod is in the
+ * wrong state or returns 0.
+ */
+static int _write_clockact_lock(struct omap_hwmod *oh, u8 clockact)
+{
+ u32 v;
+
+ if (!oh->sysconfig ||
+ !(oh->sysconfig->sysc_flags & SYSC_HAS_CLOCKACTIVITY))
+ return -EINVAL;
+
+ mutex_lock(&omap_hwmod_mutex);
+ v = oh->_sysc_cache;
+ _set_clockactivity(oh, clockact, &v);
+ _write_sysconfig(v, oh);
+ mutex_unlock(&omap_hwmod_mutex);
+
+ return 0;
+}
+
+
+/**
+ * _setup - do initial configuration of omap_hwmod
+ * @oh: struct omap_hwmod *
+ *
+ * Writes the CLOCKACTIVITY bits @clockact to the hwmod @oh
+ * OCP_SYSCONFIG register. Must be called with omap_hwmod_mutex
+ * held. Returns -EINVAL if the hwmod is in the wrong state or returns
+ * 0.
+ */
+static int _setup(struct omap_hwmod *oh)
+{
+ struct omap_hwmod_ocp_if *os;
+ int i;
+
+ if (!oh)
+ return -EINVAL;
+
+ /* Set iclk autoidle mode */
+ if (oh->slaves_cnt > 0) {
+ for (i = 0, os = *oh->slaves; i < oh->slaves_cnt; i++, os++) {
+ struct clk *c = os->_clk;
+
+ if (!c || IS_ERR(c))
+ continue;
+
+ if (os->flags & OCPIF_SWSUP_IDLE) {
+ /* XXX omap_iclk_deny_idle(c); */
+ } else {
+ /* XXX omap_iclk_allow_idle(c); */
+ clk_enable(c);
+ }
+ }
+ }
+
+ oh->_state = _HWMOD_STATE_INITIALIZED;
+
+ _enable(oh);
+
+ if (!(oh->flags & HWMOD_INIT_NO_RESET))
+ _reset(oh);
+
+ /* XXX OCP AUTOIDLE bit? */
+ /* XXX OCP ENAWAKEUP bit? */
+
+ if (!(oh->flags & HWMOD_INIT_NO_IDLE))
+ _idle(oh);
+
+ return 0;
+}
+
+
+
+/* Public functions */
+
+u32 omap_hwmod_readl(struct omap_hwmod *oh, u16 reg_offs)
+{
+ return __raw_readl(oh->_rt_va + reg_offs);
+}
+
+void omap_hwmod_writel(u32 v, struct omap_hwmod *oh, u16 reg_offs)
+{
+ __raw_writel(v, oh->_rt_va + reg_offs);
+}
+
+/**
+ * omap_hwmod_register - register a struct omap_hwmod
+ * @oh: struct omap_hwmod *
+ *
+ * Registers the omap_hwmod @oh. Returns -EEXIST if an omap_hwmod already
+ * has been registered by the same name; -EINVAL if the omap_hwmod is in the
+ * wrong state, or 0 on success.
+ *
+ * XXX The data should be copied into bootmem, so the original data
+ * should be marked __initdata and freed after init. This would allow
+ * unneeded omap_hwmods to be freed on multi-OMAP configurations. Note
+ * that the copy process would be relatively complex due to the large number
+ * of substructures.
+ */
+int omap_hwmod_register(struct omap_hwmod *oh)
+{
+ int ret, ms_id;
+
+ if (!oh || (oh->_state != _HWMOD_STATE_UNKNOWN))
+ return -EINVAL;
+
+ mutex_lock(&omap_hwmod_mutex);
+
+ pr_debug("omap_hwmod: %s: registering\n", oh->name);
+
+ if (_lookup(oh->name)) {
+ ret = -EEXIST;
+ goto ohr_unlock;
+ }
+
+ ms_id = _find_mpu_port_index(oh);
+ if (!IS_ERR_VALUE(ms_id)) {
+ oh->_mpu_port_index = ms_id;
+ oh->_rt_va = _find_mpu_rt_base(oh, oh->_mpu_port_index);
+ } else {
+ oh->_int_flags |= _HWMOD_NO_MPU_PORT;
+ }
+
+ list_add_tail(&oh->node, &omap_hwmod_list);
+
+ oh->_state = _HWMOD_STATE_REGISTERED;
+
+ ret = 0;
+
+ohr_unlock:
+ mutex_unlock(&omap_hwmod_mutex);
+ return ret;
+}
+
+/**
+ * omap_hwmod_lookup - look up a registered omap_hwmod by name
+ * @name: name of the omap_hwmod to look up
+ *
+ * Given a @name of an omap_hwmod, return a pointer to the registered
+ * struct omap_hwmod *, or NULL upon error.
+ */
+struct omap_hwmod *omap_hwmod_lookup(const char *name)
+{
+ struct omap_hwmod *oh;
+
+ if (!name)
+ return NULL;
+
+ mutex_lock(&omap_hwmod_mutex);
+ oh = _lookup(name);
+ mutex_unlock(&omap_hwmod_mutex);
+
+ return oh;
+}
+
+/**
+ * omap_hwmod_for_each - call function for each registered omap_hwmod
+ * @fn: pointer to a callback function
+ *
+ * Call @fn for each registered omap_hwmod, passing @data to each
+ * function. @fn must return 0 for success or any other value for
+ * failure. If @fn returns non-zero, the iteration across omap_hwmods
+ * will stop and the non-zero return value will be passed to the
+ * caller of omap_hwmod_for_each(). @fn is called with
+ * omap_hwmod_for_each() held.
+ */
+int omap_hwmod_for_each(int (*fn)(struct omap_hwmod *oh))
+{
+ struct omap_hwmod *temp_oh;
+ int ret;
+
+ if (!fn)
+ return -EINVAL;
+
+ mutex_lock(&omap_hwmod_mutex);
+ list_for_each_entry(temp_oh, &omap_hwmod_list, node) {
+ ret = (*fn)(temp_oh);
+ if (ret)
+ break;
+ }
+ mutex_unlock(&omap_hwmod_mutex);
+
+ return ret;
+}
+
+
+/**
+ * omap_hwmod_init - init omap_hwmod code and register hwmods
+ * @ohs: pointer to an array of omap_hwmods to register
+ *
+ * Intended to be called early in boot before the clock framework is
+ * initialized. If @ohs is not null, will register all omap_hwmods
+ * listed in @ohs that are valid for this chip. Returns -EINVAL if
+ * omap_hwmod_init() has already been called or 0 otherwise.
+ */
+int omap_hwmod_init(struct omap_hwmod **ohs)
+{
+ struct omap_hwmod *oh;
+ int r;
+
+ if (inited)
+ return -EINVAL;
+
+ inited = 1;
+
+ if (!ohs)
+ return 0;
+
+ oh = *ohs;
+ while (oh) {
+ if (omap_chip_is(oh->omap_chip)) {
+ r = omap_hwmod_register(oh);
+ WARN(r, "omap_hwmod: %s: omap_hwmod_register returned "
+ "%d\n", oh->name, r);
+ }
+ oh = *++ohs;
+ }
+
+ return 0;
+}
+
+/**
+ * omap_hwmod_late_init - do some post-clock framework initialization
+ *
+ * Must be called after omap2_clk_init(). Resolves the struct clk names
+ * to struct clk pointers for each registered omap_hwmod. Also calls
+ * _setup() on each hwmod. Returns 0.
+ */
+int omap_hwmod_late_init(void)
+{
+ int r;
+
+ /* XXX check return value */
+ r = omap_hwmod_for_each(_init_clocks);
+ WARN(r, "omap_hwmod: omap_hwmod_late_init(): _init_clocks failed\n");
+
+ mpu_oh = omap_hwmod_lookup(MPU_INITIATOR_NAME);
+ WARN(!mpu_oh, "omap_hwmod: could not find MPU initiator hwmod %s\n",
+ MPU_INITIATOR_NAME);
+
+ omap_hwmod_for_each(_setup);
+
+ return 0;
+}
+
+/**
+ * omap_hwmod_unregister - unregister an omap_hwmod
+ * @oh: struct omap_hwmod *
+ *
+ * Unregisters a previously-registered omap_hwmod @oh. There's probably
+ * no use case for this, so it is likely to be removed in a later version.
+ *
+ * XXX Free all of the bootmem-allocated structures here when that is
+ * implemented. Make it clear that core code is the only code that is
+ * expected to unregister modules.
+ */
+int omap_hwmod_unregister(struct omap_hwmod *oh)
+{
+ if (!oh)
+ return -EINVAL;
+
+ pr_debug("omap_hwmod: %s: unregistering\n", oh->name);
+
+ mutex_lock(&omap_hwmod_mutex);
+ list_del(&oh->node);
+ mutex_unlock(&omap_hwmod_mutex);
+
+ return 0;
+}
+
+/**
+ * omap_hwmod_enable - enable an omap_hwmod
+ * @oh: struct omap_hwmod *
+ *
+ * Enable an omap_hwomd @oh. Intended to be called by omap_device_enable().
+ * Returns -EINVAL on error or passes along the return value from _enable().
+ */
+int omap_hwmod_enable(struct omap_hwmod *oh)
+{
+ int r;
+
+ if (!oh)
+ return -EINVAL;
+
+ mutex_lock(&omap_hwmod_mutex);
+ r = _enable(oh);
+ mutex_unlock(&omap_hwmod_mutex);
+
+ return r;
+}
+
+/**
+ * omap_hwmod_idle - idle an omap_hwmod
+ * @oh: struct omap_hwmod *
+ *
+ * Idle an omap_hwomd @oh. Intended to be called by omap_device_idle().
+ * Returns -EINVAL on error or passes along the return value from _idle().
+ */
+int omap_hwmod_idle(struct omap_hwmod *oh)
+{
+ if (!oh)
+ return -EINVAL;
+
+ mutex_lock(&omap_hwmod_mutex);
+ _idle(oh);
+ mutex_unlock(&omap_hwmod_mutex);
+
+ return 0;
+}
+
+/**
+ * omap_hwmod_shutdown - shutdown an omap_hwmod
+ * @oh: struct omap_hwmod *
+ *
+ * Shutdown an omap_hwomd @oh. Intended to be called by
+ * omap_device_shutdown(). Returns -EINVAL on error or passes along
+ * the return value from _shutdown().
+ */
+int omap_hwmod_shutdown(struct omap_hwmod *oh)
+{
+ if (!oh)
+ return -EINVAL;
+
+ mutex_lock(&omap_hwmod_mutex);
+ _shutdown(oh);
+ mutex_unlock(&omap_hwmod_mutex);
+
+ return 0;
+}
+
+/**
+ * omap_hwmod_enable_clocks - enable main_clk, all interface clocks
+ * @oh: struct omap_hwmod *oh
+ *
+ * Intended to be called by the omap_device code.
+ */
+int omap_hwmod_enable_clocks(struct omap_hwmod *oh)
+{
+ mutex_lock(&omap_hwmod_mutex);
+ _enable_clocks(oh);
+ mutex_unlock(&omap_hwmod_mutex);
+
+ return 0;
+}
+
+/**
+ * omap_hwmod_disable_clocks - disable main_clk, all interface clocks
+ * @oh: struct omap_hwmod *oh
+ *
+ * Intended to be called by the omap_device code.
+ */
+int omap_hwmod_disable_clocks(struct omap_hwmod *oh)
+{
+ mutex_lock(&omap_hwmod_mutex);
+ _disable_clocks(oh);
+ mutex_unlock(&omap_hwmod_mutex);
+
+ return 0;
+}
+
+/**
+ * omap_hwmod_ocp_barrier - wait for posted writes against the hwmod to complete
+ * @oh: struct omap_hwmod *oh
+ *
+ * Intended to be called by drivers and core code when all posted
+ * writes to a device must complete before continuing further
+ * execution (for example, after clearing some device IRQSTATUS
+ * register bits)
+ *
+ * XXX what about targets with multiple OCP threads?
+ */
+void omap_hwmod_ocp_barrier(struct omap_hwmod *oh)
+{
+ BUG_ON(!oh);
+
+ if (!oh->sysconfig || !oh->sysconfig->sysc_flags) {
+ WARN(1, "omap_device: %s: OCP barrier impossible due to "
+ "device configuration\n", oh->name);
+ return;
+ }
+
+ /*
+ * Forces posted writes to complete on the OCP thread handling
+ * register writes
+ */
+ omap_hwmod_readl(oh, oh->sysconfig->sysc_offs);
+}
+
+/**
+ * omap_hwmod_reset - reset the hwmod
+ * @oh: struct omap_hwmod *
+ *
+ * Under some conditions, a driver may wish to reset the entire device.
+ * Called from omap_device code. Returns -EINVAL on error or passes along
+ * the return value from _reset()/_enable().
+ */
+int omap_hwmod_reset(struct omap_hwmod *oh)
+{
+ int r;
+
+ if (!oh || !(oh->_state & _HWMOD_STATE_ENABLED))
+ return -EINVAL;
+
+ mutex_lock(&omap_hwmod_mutex);
+ r = _reset(oh);
+ if (!r)
+ r = _enable(oh);
+ mutex_unlock(&omap_hwmod_mutex);
+
+ return r;
+}
+
+/**
+ * omap_hwmod_count_resources - count number of struct resources needed by hwmod
+ * @oh: struct omap_hwmod *
+ * @res: pointer to the first element of an array of struct resource to fill
+ *
+ * Count the number of struct resource array elements necessary to
+ * contain omap_hwmod @oh resources. Intended to be called by code
+ * that registers omap_devices. Intended to be used to determine the
+ * size of a dynamically-allocated struct resource array, before
+ * calling omap_hwmod_fill_resources(). Returns the number of struct
+ * resource array elements needed.
+ *
+ * XXX This code is not optimized. It could attempt to merge adjacent
+ * resource IDs.
+ *
+ */
+int omap_hwmod_count_resources(struct omap_hwmod *oh)
+{
+ int ret, i;
+
+ ret = oh->mpu_irqs_cnt + oh->sdma_chs_cnt;
+
+ for (i = 0; i < oh->slaves_cnt; i++)
+ ret += (*oh->slaves + i)->addr_cnt;
+
+ return ret;
+}
+
+/**
+ * omap_hwmod_fill_resources - fill struct resource array with hwmod data
+ * @oh: struct omap_hwmod *
+ * @res: pointer to the first element of an array of struct resource to fill
+ *
+ * Fill the struct resource array @res with resource data from the
+ * omap_hwmod @oh. Intended to be called by code that registers
+ * omap_devices. See also omap_hwmod_count_resources(). Returns the
+ * number of array elements filled.
+ */
+int omap_hwmod_fill_resources(struct omap_hwmod *oh, struct resource *res)
+{
+ int i, j;
+ int r = 0;
+
+ /* For each IRQ, DMA, memory area, fill in array.*/
+
+ for (i = 0; i < oh->mpu_irqs_cnt; i++) {
+ (res + r)->start = *(oh->mpu_irqs + i);
+ (res + r)->end = *(oh->mpu_irqs + i);
+ (res + r)->flags = IORESOURCE_IRQ;
+ r++;
+ }
+
+ for (i = 0; i < oh->sdma_chs_cnt; i++) {
+ (res + r)->name = (oh->sdma_chs + i)->name;
+ (res + r)->start = (oh->sdma_chs + i)->dma_ch;
+ (res + r)->end = (oh->sdma_chs + i)->dma_ch;
+ (res + r)->flags = IORESOURCE_DMA;
+ r++;
+ }
+
+ for (i = 0; i < oh->slaves_cnt; i++) {
+ struct omap_hwmod_ocp_if *os;
+
+ os = *oh->slaves + i;
+
+ for (j = 0; j < os->addr_cnt; j++) {
+ (res + r)->start = (os->addr + j)->pa_start;
+ (res + r)->end = (os->addr + j)->pa_end;
+ (res + r)->flags = IORESOURCE_MEM;
+ r++;
+ }
+ }
+
+ return r;
+}
+
+/**
+ * omap_hwmod_get_pwrdm - return pointer to this module's main powerdomain
+ * @oh: struct omap_hwmod *
+ *
+ * Return the powerdomain pointer associated with the OMAP module
+ * @oh's main clock. If @oh does not have a main clk, return the
+ * powerdomain associated with the interface clock associated with the
+ * module's MPU port. (XXX Perhaps this should use the SDMA port
+ * instead?) Returns NULL on error, or a struct powerdomain * on
+ * success.
+ */
+struct powerdomain *omap_hwmod_get_pwrdm(struct omap_hwmod *oh)
+{
+ struct clk *c;
+
+ if (!oh)
+ return NULL;
+
+ if (oh->_clk) {
+ c = oh->_clk;
+ } else {
+ if (oh->_int_flags & _HWMOD_NO_MPU_PORT)
+ return NULL;
+ c = oh->slaves[oh->_mpu_port_index]->_clk;
+ }
+
+ return c->clkdm->pwrdm.ptr;
+
+}
+
+/**
+ * omap_hwmod_add_initiator_dep - add sleepdep from @init_oh to @oh
+ * @oh: struct omap_hwmod *
+ * @init_oh: struct omap_hwmod * (initiator)
+ *
+ * Add a sleep dependency between the initiator @init_oh and @oh.
+ * Intended to be called by DSP/Bridge code via platform_data for the
+ * DSP case; and by the DMA code in the sDMA case. DMA code, *Bridge
+ * code needs to add/del initiator dependencies dynamically
+ * before/after accessing a device. Returns the return value from
+ * _add_initiator_dep().
+ *
+ * XXX Keep a usecount in the clockdomain code
+ */
+int omap_hwmod_add_initiator_dep(struct omap_hwmod *oh,
+ struct omap_hwmod *init_oh)
+{
+ return _add_initiator_dep(oh, init_oh);
+}
+
+/*
+ * XXX what about functions for drivers to save/restore ocp_sysconfig
+ * for context save/restore operations?
+ */
+
+/**
+ * omap_hwmod_del_initiator_dep - remove sleepdep from @init_oh to @oh
+ * @oh: struct omap_hwmod *
+ * @init_oh: struct omap_hwmod * (initiator)
+ *
+ * Remove a sleep dependency between the initiator @init_oh and @oh.
+ * Intended to be called by DSP/Bridge code via platform_data for the
+ * DSP case; and by the DMA code in the sDMA case. DMA code, *Bridge
+ * code needs to add/del initiator dependencies dynamically
+ * before/after accessing a device. Returns the return value from
+ * _del_initiator_dep().
+ *
+ * XXX Keep a usecount in the clockdomain code
+ */
+int omap_hwmod_del_initiator_dep(struct omap_hwmod *oh,
+ struct omap_hwmod *init_oh)
+{
+ return _del_initiator_dep(oh, init_oh);
+}
+
+/**
+ * omap_hwmod_set_clockact_none - set clockactivity test to BOTH
+ * @oh: struct omap_hwmod *
+ *
+ * On some modules, this function can affect the wakeup latency vs.
+ * power consumption balance. Intended to be called by the
+ * omap_device layer. Passes along the return value from
+ * _write_clockact_lock().
+ */
+int omap_hwmod_set_clockact_both(struct omap_hwmod *oh)
+{
+ return _write_clockact_lock(oh, CLOCKACT_TEST_BOTH);
+}
+
+/**
+ * omap_hwmod_set_clockact_none - set clockactivity test to MAIN
+ * @oh: struct omap_hwmod *
+ *
+ * On some modules, this function can affect the wakeup latency vs.
+ * power consumption balance. Intended to be called by the
+ * omap_device layer. Passes along the return value from
+ * _write_clockact_lock().
+ */
+int omap_hwmod_set_clockact_main(struct omap_hwmod *oh)
+{
+ return _write_clockact_lock(oh, CLOCKACT_TEST_MAIN);
+}
+
+/**
+ * omap_hwmod_set_clockact_none - set clockactivity test to ICLK
+ * @oh: struct omap_hwmod *
+ *
+ * On some modules, this function can affect the wakeup latency vs.
+ * power consumption balance. Intended to be called by the
+ * omap_device layer. Passes along the return value from
+ * _write_clockact_lock().
+ */
+int omap_hwmod_set_clockact_iclk(struct omap_hwmod *oh)
+{
+ return _write_clockact_lock(oh, CLOCKACT_TEST_ICLK);
+}
+
+/**
+ * omap_hwmod_set_clockact_none - set clockactivity test to NONE
+ * @oh: struct omap_hwmod *
+ *
+ * On some modules, this function can affect the wakeup latency vs.
+ * power consumption balance. Intended to be called by the
+ * omap_device layer. Passes along the return value from
+ * _write_clockact_lock().
+ */
+int omap_hwmod_set_clockact_none(struct omap_hwmod *oh)
+{
+ return _write_clockact_lock(oh, CLOCKACT_TEST_NONE);
+}
+
+/**
+ * omap_hwmod_enable_wakeup - allow device to wake up the system
+ * @oh: struct omap_hwmod *
+ *
+ * Sets the module OCP socket ENAWAKEUP bit to allow the module to
+ * send wakeups to the PRCM. Eventually this should sets PRCM wakeup
+ * registers to cause the PRCM to receive wakeup events from the
+ * module. Does not set any wakeup routing registers beyond this
+ * point - if the module is to wake up any other module or subsystem,
+ * that must be set separately. Called by omap_device code. Returns
+ * -EINVAL on error or 0 upon success.
+ */
+int omap_hwmod_enable_wakeup(struct omap_hwmod *oh)
+{
+ if (!oh->sysconfig ||
+ !(oh->sysconfig->sysc_flags & SYSC_HAS_ENAWAKEUP))
+ return -EINVAL;
+
+ mutex_lock(&omap_hwmod_mutex);
+ _enable_wakeup(oh);
+ mutex_unlock(&omap_hwmod_mutex);
+
+ return 0;
+}
+
+/**
+ * omap_hwmod_disable_wakeup - prevent device from waking the system
+ * @oh: struct omap_hwmod *
+ *
+ * Clears the module OCP socket ENAWAKEUP bit to prevent the module
+ * from sending wakeups to the PRCM. Eventually this should clear
+ * PRCM wakeup registers to cause the PRCM to ignore wakeup events
+ * from the module. Does not set any wakeup routing registers beyond
+ * this point - if the module is to wake up any other module or
+ * subsystem, that must be set separately. Called by omap_device
+ * code. Returns -EINVAL on error or 0 upon success.
+ */
+int omap_hwmod_disable_wakeup(struct omap_hwmod *oh)
+{
+ if (!oh->sysconfig ||
+ !(oh->sysconfig->sysc_flags & SYSC_HAS_ENAWAKEUP))
+ return -EINVAL;
+
+ mutex_lock(&omap_hwmod_mutex);
+ _disable_wakeup(oh);
+ mutex_unlock(&omap_hwmod_mutex);
+
+ return 0;
+}
diff --git a/arch/arm/mach-omap2/omap_hwmod_2420.h b/arch/arm/mach-omap2/omap_hwmod_2420.h
new file mode 100644
index 00000000000..767e4965ac4
--- /dev/null
+++ b/arch/arm/mach-omap2/omap_hwmod_2420.h
@@ -0,0 +1,141 @@
+/*
+ * omap_hwmod_2420.h - hardware modules present on the OMAP2420 chips
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ * Paul Walmsley
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * XXX handle crossbar/shared link difference for L3?
+ *
+ */
+#ifndef __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_HWMOD2420_H
+#define __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_HWMOD2420_H
+
+#ifdef CONFIG_ARCH_OMAP2420
+
+#include <mach/omap_hwmod.h>
+#include <mach/irqs.h>
+#include <mach/cpu.h>
+#include <mach/dma.h>
+
+#include "prm-regbits-24xx.h"
+
+static struct omap_hwmod omap2420_mpu_hwmod;
+static struct omap_hwmod omap2420_l3_hwmod;
+static struct omap_hwmod omap2420_l4_core_hwmod;
+
+/* L3 -> L4_CORE interface */
+static struct omap_hwmod_ocp_if omap2420_l3__l4_core = {
+ .master = &omap2420_l3_hwmod,
+ .slave = &omap2420_l4_core_hwmod,
+ .user = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* MPU -> L3 interface */
+static struct omap_hwmod_ocp_if omap2420_mpu__l3 = {
+ .master = &omap2420_mpu_hwmod,
+ .slave = &omap2420_l3_hwmod,
+ .user = OCP_USER_MPU,
+};
+
+/* Slave interfaces on the L3 interconnect */
+static struct omap_hwmod_ocp_if *omap2420_l3_slaves[] = {
+ &omap2420_mpu__l3,
+};
+
+/* Master interfaces on the L3 interconnect */
+static struct omap_hwmod_ocp_if *omap2420_l3_masters[] = {
+ &omap2420_l3__l4_core,
+};
+
+/* L3 */
+static struct omap_hwmod omap2420_l3_hwmod = {
+ .name = "l3_hwmod",
+ .masters = omap2420_l3_masters,
+ .masters_cnt = ARRAY_SIZE(omap2420_l3_masters),
+ .slaves = omap2420_l3_slaves,
+ .slaves_cnt = ARRAY_SIZE(omap2420_l3_slaves),
+ .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP2420)
+};
+
+static struct omap_hwmod omap2420_l4_wkup_hwmod;
+
+/* L4_CORE -> L4_WKUP interface */
+static struct omap_hwmod_ocp_if omap2420_l4_core__l4_wkup = {
+ .master = &omap2420_l4_core_hwmod,
+ .slave = &omap2420_l4_wkup_hwmod,
+ .user = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* Slave interfaces on the L4_CORE interconnect */
+static struct omap_hwmod_ocp_if *omap2420_l4_core_slaves[] = {
+ &omap2420_l3__l4_core,
+};
+
+/* Master interfaces on the L4_CORE interconnect */
+static struct omap_hwmod_ocp_if *omap2420_l4_core_masters[] = {
+ &omap2420_l4_core__l4_wkup,
+};
+
+/* L4 CORE */
+static struct omap_hwmod omap2420_l4_core_hwmod = {
+ .name = "l4_core_hwmod",
+ .masters = omap2420_l4_core_masters,
+ .masters_cnt = ARRAY_SIZE(omap2420_l4_core_masters),
+ .slaves = omap2420_l4_core_slaves,
+ .slaves_cnt = ARRAY_SIZE(omap2420_l4_core_slaves),
+ .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP2420)
+};
+
+/* Slave interfaces on the L4_WKUP interconnect */
+static struct omap_hwmod_ocp_if *omap2420_l4_wkup_slaves[] = {
+ &omap2420_l4_core__l4_wkup,
+};
+
+/* Master interfaces on the L4_WKUP interconnect */
+static struct omap_hwmod_ocp_if *omap2420_l4_wkup_masters[] = {
+};
+
+/* L4 WKUP */
+static struct omap_hwmod omap2420_l4_wkup_hwmod = {
+ .name = "l4_wkup_hwmod",
+ .masters = omap2420_l4_wkup_masters,
+ .masters_cnt = ARRAY_SIZE(omap2420_l4_wkup_masters),
+ .slaves = omap2420_l4_wkup_slaves,
+ .slaves_cnt = ARRAY_SIZE(omap2420_l4_wkup_slaves),
+ .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP2420)
+};
+
+/* Master interfaces on the MPU device */
+static struct omap_hwmod_ocp_if *omap2420_mpu_masters[] = {
+ &omap2420_mpu__l3,
+};
+
+/* MPU */
+static struct omap_hwmod omap2420_mpu_hwmod = {
+ .name = "mpu_hwmod",
+ .clkdev_dev_id = NULL,
+ .clkdev_con_id = "mpu_ck",
+ .masters = omap2420_mpu_masters,
+ .masters_cnt = ARRAY_SIZE(omap2420_mpu_masters),
+ .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP2420),
+};
+
+static __initdata struct omap_hwmod *omap2420_hwmods[] = {
+ &omap2420_l3_hwmod,
+ &omap2420_l4_core_hwmod,
+ &omap2420_l4_wkup_hwmod,
+ &omap2420_mpu_hwmod,
+ NULL,
+};
+
+#else
+# define omap2420_hwmods 0
+#endif
+
+#endif
+
+
diff --git a/arch/arm/mach-omap2/omap_hwmod_2430.h b/arch/arm/mach-omap2/omap_hwmod_2430.h
new file mode 100644
index 00000000000..a412be6420e
--- /dev/null
+++ b/arch/arm/mach-omap2/omap_hwmod_2430.h
@@ -0,0 +1,143 @@
+/*
+ * omap_hwmod_2430.h - hardware modules present on the OMAP2430 chips
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ * Paul Walmsley
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * XXX handle crossbar/shared link difference for L3?
+ *
+ */
+#ifndef __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_HWMOD2430_H
+#define __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_HWMOD2430_H
+
+#ifdef CONFIG_ARCH_OMAP2430
+
+#include <mach/omap_hwmod.h>
+#include <mach/irqs.h>
+#include <mach/cpu.h>
+#include <mach/dma.h>
+
+#include "prm-regbits-24xx.h"
+
+static struct omap_hwmod omap2430_mpu_hwmod;
+static struct omap_hwmod omap2430_l3_hwmod;
+static struct omap_hwmod omap2430_l4_core_hwmod;
+
+/* L3 -> L4_CORE interface */
+static struct omap_hwmod_ocp_if omap2430_l3__l4_core = {
+ .master = &omap2430_l3_hwmod,
+ .slave = &omap2430_l4_core_hwmod,
+ .user = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* MPU -> L3 interface */
+static struct omap_hwmod_ocp_if omap2430_mpu__l3 = {
+ .master = &omap2430_mpu_hwmod,
+ .slave = &omap2430_l3_hwmod,
+ .user = OCP_USER_MPU,
+};
+
+/* Slave interfaces on the L3 interconnect */
+static struct omap_hwmod_ocp_if *omap2430_l3_slaves[] = {
+ &omap2430_mpu__l3,
+};
+
+/* Master interfaces on the L3 interconnect */
+static struct omap_hwmod_ocp_if *omap2430_l3_masters[] = {
+ &omap2430_l3__l4_core,
+};
+
+/* L3 */
+static struct omap_hwmod omap2430_l3_hwmod = {
+ .name = "l3_hwmod",
+ .masters = omap2430_l3_masters,
+ .masters_cnt = ARRAY_SIZE(omap2430_l3_masters),
+ .slaves = omap2430_l3_slaves,
+ .slaves_cnt = ARRAY_SIZE(omap2430_l3_slaves),
+ .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP2430)
+};
+
+static struct omap_hwmod omap2430_l4_wkup_hwmod;
+static struct omap_hwmod omap2430_mmc1_hwmod;
+static struct omap_hwmod omap2430_mmc2_hwmod;
+
+/* L4_CORE -> L4_WKUP interface */
+static struct omap_hwmod_ocp_if omap2430_l4_core__l4_wkup = {
+ .master = &omap2430_l4_core_hwmod,
+ .slave = &omap2430_l4_wkup_hwmod,
+ .user = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* Slave interfaces on the L4_CORE interconnect */
+static struct omap_hwmod_ocp_if *omap2430_l4_core_slaves[] = {
+ &omap2430_l3__l4_core,
+};
+
+/* Master interfaces on the L4_CORE interconnect */
+static struct omap_hwmod_ocp_if *omap2430_l4_core_masters[] = {
+ &omap2430_l4_core__l4_wkup,
+};
+
+/* L4 CORE */
+static struct omap_hwmod omap2430_l4_core_hwmod = {
+ .name = "l4_core_hwmod",
+ .masters = omap2430_l4_core_masters,
+ .masters_cnt = ARRAY_SIZE(omap2430_l4_core_masters),
+ .slaves = omap2430_l4_core_slaves,
+ .slaves_cnt = ARRAY_SIZE(omap2430_l4_core_slaves),
+ .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP2430)
+};
+
+/* Slave interfaces on the L4_WKUP interconnect */
+static struct omap_hwmod_ocp_if *omap2430_l4_wkup_slaves[] = {
+ &omap2430_l4_core__l4_wkup,
+};
+
+/* Master interfaces on the L4_WKUP interconnect */
+static struct omap_hwmod_ocp_if *omap2430_l4_wkup_masters[] = {
+};
+
+/* L4 WKUP */
+static struct omap_hwmod omap2430_l4_wkup_hwmod = {
+ .name = "l4_wkup_hwmod",
+ .masters = omap2430_l4_wkup_masters,
+ .masters_cnt = ARRAY_SIZE(omap2430_l4_wkup_masters),
+ .slaves = omap2430_l4_wkup_slaves,
+ .slaves_cnt = ARRAY_SIZE(omap2430_l4_wkup_slaves),
+ .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP2430)
+};
+
+/* Master interfaces on the MPU device */
+static struct omap_hwmod_ocp_if *omap2430_mpu_masters[] = {
+ &omap2430_mpu__l3,
+};
+
+/* MPU */
+static struct omap_hwmod omap2430_mpu_hwmod = {
+ .name = "mpu_hwmod",
+ .clkdev_dev_id = NULL,
+ .clkdev_con_id = "mpu_ck",
+ .masters = omap2430_mpu_masters,
+ .masters_cnt = ARRAY_SIZE(omap2430_mpu_masters),
+ .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP2430),
+};
+
+static __initdata struct omap_hwmod *omap2430_hwmods[] = {
+ &omap2430_l3_hwmod,
+ &omap2430_l4_core_hwmod,
+ &omap2430_l4_wkup_hwmod,
+ &omap2430_mpu_hwmod,
+ NULL,
+};
+
+#else
+# define omap2430_hwmods 0
+#endif
+
+#endif
+
+
diff --git a/arch/arm/mach-omap2/omap_hwmod_34xx.h b/arch/arm/mach-omap2/omap_hwmod_34xx.h
new file mode 100644
index 00000000000..1e069f83157
--- /dev/null
+++ b/arch/arm/mach-omap2/omap_hwmod_34xx.h
@@ -0,0 +1,168 @@
+/*
+ * omap_hwmod_34xx.h - hardware modules present on the OMAP34xx chips
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ * Paul Walmsley
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+#ifndef __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_HWMOD34XX_H
+#define __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_HWMOD34XX_H
+
+#ifdef CONFIG_ARCH_OMAP34XX
+
+#include <mach/omap_hwmod.h>
+#include <mach/irqs.h>
+#include <mach/cpu.h>
+#include <mach/dma.h>
+
+#include "prm-regbits-34xx.h"
+
+static struct omap_hwmod omap34xx_mpu_hwmod;
+static struct omap_hwmod omap34xx_l3_hwmod;
+static struct omap_hwmod omap34xx_l4_core_hwmod;
+static struct omap_hwmod omap34xx_l4_per_hwmod;
+
+/* L3 -> L4_CORE interface */
+static struct omap_hwmod_ocp_if omap34xx_l3__l4_core = {
+ .master = &omap34xx_l3_hwmod,
+ .slave = &omap34xx_l4_core_hwmod,
+ .user = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* L3 -> L4_PER interface */
+static struct omap_hwmod_ocp_if omap34xx_l3__l4_per = {
+ .master = &omap34xx_l3_hwmod,
+ .slave = &omap34xx_l4_per_hwmod,
+ .user = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* MPU -> L3 interface */
+static struct omap_hwmod_ocp_if omap34xx_mpu__l3 = {
+ .master = &omap34xx_mpu_hwmod,
+ .slave = &omap34xx_l3_hwmod,
+ .user = OCP_USER_MPU,
+};
+
+/* Slave interfaces on the L3 interconnect */
+static struct omap_hwmod_ocp_if *omap34xx_l3_slaves[] = {
+ &omap34xx_mpu__l3,
+};
+
+/* Master interfaces on the L3 interconnect */
+static struct omap_hwmod_ocp_if *omap34xx_l3_masters[] = {
+ &omap34xx_l3__l4_core,
+ &omap34xx_l3__l4_per,
+};
+
+/* L3 */
+static struct omap_hwmod omap34xx_l3_hwmod = {
+ .name = "l3_hwmod",
+ .masters = omap34xx_l3_masters,
+ .masters_cnt = ARRAY_SIZE(omap34xx_l3_masters),
+ .slaves = omap34xx_l3_slaves,
+ .slaves_cnt = ARRAY_SIZE(omap34xx_l3_slaves),
+ .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP3430)
+};
+
+static struct omap_hwmod omap34xx_l4_wkup_hwmod;
+
+/* L4_CORE -> L4_WKUP interface */
+static struct omap_hwmod_ocp_if omap34xx_l4_core__l4_wkup = {
+ .master = &omap34xx_l4_core_hwmod,
+ .slave = &omap34xx_l4_wkup_hwmod,
+ .user = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* Slave interfaces on the L4_CORE interconnect */
+static struct omap_hwmod_ocp_if *omap34xx_l4_core_slaves[] = {
+ &omap34xx_l3__l4_core,
+};
+
+/* Master interfaces on the L4_CORE interconnect */
+static struct omap_hwmod_ocp_if *omap34xx_l4_core_masters[] = {
+ &omap34xx_l4_core__l4_wkup,
+};
+
+/* L4 CORE */
+static struct omap_hwmod omap34xx_l4_core_hwmod = {
+ .name = "l4_core_hwmod",
+ .masters = omap34xx_l4_core_masters,
+ .masters_cnt = ARRAY_SIZE(omap34xx_l4_core_masters),
+ .slaves = omap34xx_l4_core_slaves,
+ .slaves_cnt = ARRAY_SIZE(omap34xx_l4_core_slaves),
+ .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP3430)
+};
+
+/* Slave interfaces on the L4_PER interconnect */
+static struct omap_hwmod_ocp_if *omap34xx_l4_per_slaves[] = {
+ &omap34xx_l3__l4_per,
+};
+
+/* Master interfaces on the L4_PER interconnect */
+static struct omap_hwmod_ocp_if *omap34xx_l4_per_masters[] = {
+};
+
+/* L4 PER */
+static struct omap_hwmod omap34xx_l4_per_hwmod = {
+ .name = "l4_per_hwmod",
+ .masters = omap34xx_l4_per_masters,
+ .masters_cnt = ARRAY_SIZE(omap34xx_l4_per_masters),
+ .slaves = omap34xx_l4_per_slaves,
+ .slaves_cnt = ARRAY_SIZE(omap34xx_l4_per_slaves),
+ .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP3430)
+};
+
+/* Slave interfaces on the L4_WKUP interconnect */
+static struct omap_hwmod_ocp_if *omap34xx_l4_wkup_slaves[] = {
+ &omap34xx_l4_core__l4_wkup,
+};
+
+/* Master interfaces on the L4_WKUP interconnect */
+static struct omap_hwmod_ocp_if *omap34xx_l4_wkup_masters[] = {
+};
+
+/* L4 WKUP */
+static struct omap_hwmod omap34xx_l4_wkup_hwmod = {
+ .name = "l4_wkup_hwmod",
+ .masters = omap34xx_l4_wkup_masters,
+ .masters_cnt = ARRAY_SIZE(omap34xx_l4_wkup_masters),
+ .slaves = omap34xx_l4_wkup_slaves,
+ .slaves_cnt = ARRAY_SIZE(omap34xx_l4_wkup_slaves),
+ .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP3430)
+};
+
+/* Master interfaces on the MPU device */
+static struct omap_hwmod_ocp_if *omap34xx_mpu_masters[] = {
+ &omap34xx_mpu__l3,
+};
+
+/* MPU */
+static struct omap_hwmod omap34xx_mpu_hwmod = {
+ .name = "mpu_hwmod",
+ .clkdev_dev_id = NULL,
+ .clkdev_con_id = "arm_fck",
+ .masters = omap34xx_mpu_masters,
+ .masters_cnt = ARRAY_SIZE(omap34xx_mpu_masters),
+ .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+};
+
+static __initdata struct omap_hwmod *omap34xx_hwmods[] = {
+ &omap34xx_l3_hwmod,
+ &omap34xx_l4_core_hwmod,
+ &omap34xx_l4_per_hwmod,
+ &omap34xx_l4_wkup_hwmod,
+ &omap34xx_mpu_hwmod,
+ NULL,
+};
+
+#else
+# define omap34xx_hwmods 0
+#endif
+
+#endif
+
+
diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c
index 5a6cef3e42b..2594cbff394 100644
--- a/arch/arm/mach-omap2/powerdomain.c
+++ b/arch/arm/mach-omap2/powerdomain.c
@@ -90,7 +90,7 @@ static struct powerdomain *_pwrdm_deps_lookup(struct powerdomain *pwrdm,
if (!pwrdm || !deps || !omap_chip_is(pwrdm->omap_chip))
return ERR_PTR(-EINVAL);
- for (pd = deps; pd; pd++) {
+ for (pd = deps; pd->pwrdm_name; pd++) {
if (!omap_chip_is(pd->omap_chip))
continue;
@@ -103,7 +103,7 @@ static struct powerdomain *_pwrdm_deps_lookup(struct powerdomain *pwrdm,
}
- if (!pd)
+ if (!pd->pwrdm_name)
return ERR_PTR(-ENOENT);
return pd->pwrdm;
diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c
index 0f508109adc..021130d830b 100644
--- a/arch/arm/mach-omap2/serial.c
+++ b/arch/arm/mach-omap2/serial.c
@@ -578,7 +578,7 @@ static struct omap_uart_state omap_uart[OMAP_MAX_NR_PORTS] = {
#endif
};
-void __init omap_serial_init(void)
+void __init omap_serial_early_init(void)
{
int i;
char name[16];
@@ -624,6 +624,18 @@ void __init omap_serial_init(void)
p->irq += 32;
omap_uart_enable_clocks(uart);
+ }
+}
+
+void __init omap_serial_init(void)
+{
+ int i;
+
+ for (i = 0; i < OMAP_MAX_NR_PORTS; i++) {
+ struct omap_uart_state *uart = &omap_uart[i];
+ struct platform_device *pdev = &uart->pdev;
+ struct device *dev = &pdev->dev;
+
omap_uart_reset(uart);
omap_uart_idle_init(uart);
diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig
index ab9f9efc9b6..64b3f52bd9b 100644
--- a/arch/arm/plat-omap/Kconfig
+++ b/arch/arm/plat-omap/Kconfig
@@ -187,6 +187,19 @@ config OMAP_SERIAL_WAKE
to data on the serial RX line. This allows you to wake the
system from serial console.
+choice
+ prompt "OMAP PM layer selection"
+ depends on ARCH_OMAP
+ default OMAP_PM_NOOP
+
+config OMAP_PM_NONE
+ bool "No PM layer"
+
+config OMAP_PM_NOOP
+ bool "No-op/debug PM layer"
+
+endchoice
+
endmenu
endif
diff --git a/arch/arm/plat-omap/Makefile b/arch/arm/plat-omap/Makefile
index 769a4c20036..98f01910c2c 100644
--- a/arch/arm/plat-omap/Makefile
+++ b/arch/arm/plat-omap/Makefile
@@ -12,6 +12,10 @@ obj- :=
# OCPI interconnect support for 1710, 1610 and 5912
obj-$(CONFIG_ARCH_OMAP16XX) += ocpi.o
+# omap_device support (OMAP2+ only at the moment)
+obj-$(CONFIG_ARCH_OMAP2) += omap_device.o
+obj-$(CONFIG_ARCH_OMAP3) += omap_device.o
+
obj-$(CONFIG_OMAP_MCBSP) += mcbsp.o
obj-$(CONFIG_OMAP_IOMMU) += iommu.o iovmm.o
obj-$(CONFIG_OMAP_IOMMU_DEBUG) += iommu-debug.o
@@ -26,3 +30,4 @@ obj-y += $(i2c-omap-m) $(i2c-omap-y)
# OMAP mailbox framework
obj-$(CONFIG_OMAP_MBOX_FWK) += mailbox.o
+obj-$(CONFIG_OMAP_PM_NOOP) += omap-pm-noop.o \ No newline at end of file
diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c
index e8c327a45a5..bf880e966d3 100644
--- a/arch/arm/plat-omap/clock.c
+++ b/arch/arm/plat-omap/clock.c
@@ -488,7 +488,7 @@ static int __init clk_debugfs_init(void)
}
return 0;
err_out:
- debugfs_remove(clk_debugfs_root); /* REVISIT: Cleanup correctly */
+ debugfs_remove_recursive(clk_debugfs_root);
return err;
}
late_initcall(clk_debugfs_init);
diff --git a/arch/arm/plat-omap/include/mach/omap-pm.h b/arch/arm/plat-omap/include/mach/omap-pm.h
new file mode 100644
index 00000000000..3ee41d71149
--- /dev/null
+++ b/arch/arm/plat-omap/include/mach/omap-pm.h
@@ -0,0 +1,301 @@
+/*
+ * omap-pm.h - OMAP power management interface
+ *
+ * Copyright (C) 2008-2009 Texas Instruments, Inc.
+ * Copyright (C) 2008-2009 Nokia Corporation
+ * Paul Walmsley
+ *
+ * Interface developed by (in alphabetical order): Karthik Dasu, Jouni
+ * Högander, Tony Lindgren, Rajendra Nayak, Sakari Poussa,
+ * Veeramanikandan Raju, Anand Sawant, Igor Stoppa, Paul Walmsley,
+ * Richard Woodruff
+ */
+
+#ifndef ASM_ARM_ARCH_OMAP_OMAP_PM_H
+#define ASM_ARM_ARCH_OMAP_OMAP_PM_H
+
+#include <linux/device.h>
+#include <linux/cpufreq.h>
+
+#include "powerdomain.h"
+
+/**
+ * struct omap_opp - clock frequency-to-OPP ID table for DSP, MPU
+ * @rate: target clock rate
+ * @opp_id: OPP ID
+ * @min_vdd: minimum VDD1 voltage (in millivolts) for this OPP
+ *
+ * Operating performance point data. Can vary by OMAP chip and board.
+ */
+struct omap_opp {
+ unsigned long rate;
+ u8 opp_id;
+ u16 min_vdd;
+};
+
+extern struct omap_opp *mpu_opps;
+extern struct omap_opp *dsp_opps;
+extern struct omap_opp *l3_opps;
+
+/*
+ * agent_id values for use with omap_pm_set_min_bus_tput():
+ *
+ * OCP_INITIATOR_AGENT is only valid for devices that can act as
+ * initiators -- it represents the device's L3 interconnect
+ * connection. OCP_TARGET_AGENT represents the device's L4
+ * interconnect connection.
+ */
+#define OCP_TARGET_AGENT 1
+#define OCP_INITIATOR_AGENT 2
+
+/**
+ * omap_pm_if_early_init - OMAP PM init code called before clock fw init
+ * @mpu_opp_table: array ptr to struct omap_opp for MPU
+ * @dsp_opp_table: array ptr to struct omap_opp for DSP
+ * @l3_opp_table : array ptr to struct omap_opp for CORE
+ *
+ * Initialize anything that must be configured before the clock
+ * framework starts. The "_if_" is to avoid name collisions with the
+ * PM idle-loop code.
+ */
+int __init omap_pm_if_early_init(struct omap_opp *mpu_opp_table,
+ struct omap_opp *dsp_opp_table,
+ struct omap_opp *l3_opp_table);
+
+/**
+ * omap_pm_if_init - OMAP PM init code called after clock fw init
+ *
+ * The main initialization code. OPP tables are passed in here. The
+ * "_if_" is to avoid name collisions with the PM idle-loop code.
+ */
+int __init omap_pm_if_init(void);
+
+/**
+ * omap_pm_if_exit - OMAP PM exit code
+ *
+ * Exit code; currently unused. The "_if_" is to avoid name
+ * collisions with the PM idle-loop code.
+ */
+void omap_pm_if_exit(void);
+
+/*
+ * Device-driver-originated constraints (via board-*.c files, platform_data)
+ */
+
+
+/**
+ * omap_pm_set_max_mpu_wakeup_lat - set the maximum MPU wakeup latency
+ * @dev: struct device * requesting the constraint
+ * @t: maximum MPU wakeup latency in microseconds
+ *
+ * Request that the maximum interrupt latency for the MPU to be no
+ * greater than 't' microseconds. "Interrupt latency" in this case is
+ * defined as the elapsed time from the occurrence of a hardware or
+ * timer interrupt to the time when the device driver's interrupt
+ * service routine has been entered by the MPU.
+ *
+ * It is intended that underlying PM code will use this information to
+ * determine what power state to put the MPU powerdomain into, and
+ * possibly the CORE powerdomain as well, since interrupt handling
+ * code currently runs from SDRAM. Advanced PM or board*.c code may
+ * also configure interrupt controller priorities, OCP bus priorities,
+ * CPU speed(s), etc.
+ *
+ * This function will not affect device wakeup latency, e.g., time
+ * elapsed from when a device driver enables a hardware device with
+ * clk_enable(), to when the device is ready for register access or
+ * other use. To control this device wakeup latency, use
+ * set_max_dev_wakeup_lat()
+ *
+ * Multiple calls to set_max_mpu_wakeup_lat() will replace the
+ * previous t value. To remove the latency target for the MPU, call
+ * with t = -1.
+ *
+ * No return value.
+ */
+void omap_pm_set_max_mpu_wakeup_lat(struct device *dev, long t);
+
+
+/**
+ * omap_pm_set_min_bus_tput - set minimum bus throughput needed by device
+ * @dev: struct device * requesting the constraint
+ * @tbus_id: interconnect to operate on (OCP_{INITIATOR,TARGET}_AGENT)
+ * @r: minimum throughput (in KiB/s)
+ *
+ * Request that the minimum data throughput on the OCP interconnect
+ * attached to device 'dev' interconnect agent 'tbus_id' be no less
+ * than 'r' KiB/s.
+ *
+ * It is expected that the OMAP PM or bus code will use this
+ * information to set the interconnect clock to run at the lowest
+ * possible speed that satisfies all current system users. The PM or
+ * bus code will adjust the estimate based on its model of the bus, so
+ * device driver authors should attempt to specify an accurate
+ * quantity for their device use case, and let the PM or bus code
+ * overestimate the numbers as necessary to handle request/response
+ * latency, other competing users on the system, etc. On OMAP2/3, if
+ * a driver requests a minimum L4 interconnect speed constraint, the
+ * code will also need to add an minimum L3 interconnect speed
+ * constraint,
+ *
+ * Multiple calls to set_min_bus_tput() will replace the previous rate
+ * value for this device. To remove the interconnect throughput
+ * restriction for this device, call with r = 0.
+ *
+ * No return value.
+ */
+void omap_pm_set_min_bus_tput(struct device *dev, u8 agent_id, unsigned long r);
+
+
+/**
+ * omap_pm_set_max_dev_wakeup_lat - set the maximum device enable latency
+ * @dev: struct device *
+ * @t: maximum device wakeup latency in microseconds
+ *
+ * Request that the maximum amount of time necessary for a device to
+ * become accessible after its clocks are enabled should be no greater
+ * than 't' microseconds. Specifically, this represents the time from
+ * when a device driver enables device clocks with clk_enable(), to
+ * when the register reads and writes on the device will succeed.
+ * This function should be called before clk_disable() is called,
+ * since the power state transition decision may be made during
+ * clk_disable().
+ *
+ * It is intended that underlying PM code will use this information to
+ * determine what power state to put the powerdomain enclosing this
+ * device into.
+ *
+ * Multiple calls to set_max_dev_wakeup_lat() will replace the
+ * previous wakeup latency values for this device. To remove the wakeup
+ * latency restriction for this device, call with t = -1.
+ *
+ * No return value.
+ */
+void omap_pm_set_max_dev_wakeup_lat(struct device *dev, long t);
+
+
+/**
+ * omap_pm_set_max_sdma_lat - set the maximum system DMA transfer start latency
+ * @dev: struct device *
+ * @t: maximum DMA transfer start latency in microseconds
+ *
+ * Request that the maximum system DMA transfer start latency for this
+ * device 'dev' should be no greater than 't' microseconds. "DMA
+ * transfer start latency" here is defined as the elapsed time from
+ * when a device (e.g., McBSP) requests that a system DMA transfer
+ * start or continue, to the time at which data starts to flow into
+ * that device from the system DMA controller.
+ *
+ * It is intended that underlying PM code will use this information to
+ * determine what power state to put the CORE powerdomain into.
+ *
+ * Since system DMA transfers may not involve the MPU, this function
+ * will not affect MPU wakeup latency. Use set_max_cpu_lat() to do
+ * so. Similarly, this function will not affect device wakeup latency
+ * -- use set_max_dev_wakeup_lat() to affect that.
+ *
+ * Multiple calls to set_max_sdma_lat() will replace the previous t
+ * value for this device. To remove the maximum DMA latency for this
+ * device, call with t = -1.
+ *
+ * No return value.
+ */
+void omap_pm_set_max_sdma_lat(struct device *dev, long t);
+
+
+/*
+ * DSP Bridge-specific constraints
+ */
+
+/**
+ * omap_pm_dsp_get_opp_table - get OPP->DSP clock frequency table
+ *
+ * Intended for use by DSPBridge. Returns an array of OPP->DSP clock
+ * frequency entries. The final item in the array should have .rate =
+ * .opp_id = 0.
+ */
+const struct omap_opp *omap_pm_dsp_get_opp_table(void);
+
+/**
+ * omap_pm_dsp_set_min_opp - receive desired OPP target ID from DSP Bridge
+ * @opp_id: target DSP OPP ID
+ *
+ * Set a minimum OPP ID for the DSP. This is intended to be called
+ * only from the DSP Bridge MPU-side driver. Unfortunately, the only
+ * information that code receives from the DSP/BIOS load estimator is the
+ * target OPP ID; hence, this interface. No return value.
+ */
+void omap_pm_dsp_set_min_opp(u8 opp_id);
+
+/**
+ * omap_pm_dsp_get_opp - report the current DSP OPP ID
+ *
+ * Report the current OPP for the DSP. Since on OMAP3, the DSP and
+ * MPU share a single voltage domain, the OPP ID returned back may
+ * represent a higher DSP speed than the OPP requested via
+ * omap_pm_dsp_set_min_opp().
+ *
+ * Returns the current VDD1 OPP ID, or 0 upon error.
+ */
+u8 omap_pm_dsp_get_opp(void);
+
+
+/*
+ * CPUFreq-originated constraint
+ *
+ * In the future, this should be handled by custom OPP clocktype
+ * functions.
+ */
+
+/**
+ * omap_pm_cpu_get_freq_table - return a cpufreq_frequency_table array ptr
+ *
+ * Provide a frequency table usable by CPUFreq for the current chip/board.
+ * Returns a pointer to a struct cpufreq_frequency_table array or NULL
+ * upon error.
+ */
+struct cpufreq_frequency_table **omap_pm_cpu_get_freq_table(void);
+
+/**
+ * omap_pm_cpu_set_freq - set the current minimum MPU frequency
+ * @f: MPU frequency in Hz
+ *
+ * Set the current minimum CPU frequency. The actual CPU frequency
+ * used could end up higher if the DSP requested a higher OPP.
+ * Intended to be called by plat-omap/cpu_omap.c:omap_target(). No
+ * return value.
+ */
+void omap_pm_cpu_set_freq(unsigned long f);
+
+/**
+ * omap_pm_cpu_get_freq - report the current CPU frequency
+ *
+ * Returns the current MPU frequency, or 0 upon error.
+ */
+unsigned long omap_pm_cpu_get_freq(void);
+
+
+/*
+ * Device context loss tracking
+ */
+
+/**
+ * omap_pm_get_dev_context_loss_count - return count of times dev has lost ctx
+ * @dev: struct device *
+ *
+ * This function returns the number of times that the device @dev has
+ * lost its internal context. This generally occurs on a powerdomain
+ * transition to OFF. Drivers use this as an optimization to avoid restoring
+ * context if the device hasn't lost it. To use, drivers should initially
+ * call this in their context save functions and store the result. Early in
+ * the driver's context restore function, the driver should call this function
+ * again, and compare the result to the stored counter. If they differ, the
+ * driver must restore device context. If the number of context losses
+ * exceeds the maximum positive integer, the function will wrap to 0 and
+ * continue counting. Returns the number of context losses for this device,
+ * or -EINVAL upon error.
+ */
+int omap_pm_get_dev_context_loss_count(struct device *dev);
+
+
+#endif
diff --git a/arch/arm/plat-omap/include/mach/omap_device.h b/arch/arm/plat-omap/include/mach/omap_device.h
new file mode 100644
index 00000000000..bd0e136db33
--- /dev/null
+++ b/arch/arm/plat-omap/include/mach/omap_device.h
@@ -0,0 +1,141 @@
+/*
+ * omap_device headers
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ * Paul Walmsley
+ *
+ * Developed in collaboration with (alphabetical order): Benoit
+ * Cousson, Kevin Hilman, Tony Lindgren, Rajendra Nayak, Vikram
+ * Pandita, Sakari Poussa, Anand Sawant, Santosh Shilimkar, Richard
+ * Woodruff
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Eventually this type of functionality should either be
+ * a) implemented via arch-specific pointers in platform_device
+ * or
+ * b) implemented as a proper omap_bus/omap_device in Linux, no more
+ * platform_device
+ *
+ * omap_device differs from omap_hwmod in that it includes external
+ * (e.g., board- and system-level) integration details. omap_hwmod
+ * stores hardware data that is invariant for a given OMAP chip.
+ *
+ * To do:
+ * - GPIO integration
+ * - regulator integration
+ *
+ */
+#ifndef __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_DEVICE_H
+#define __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_DEVICE_H
+
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+
+#include <mach/omap_hwmod.h>
+
+/* omap_device._state values */
+#define OMAP_DEVICE_STATE_UNKNOWN 0
+#define OMAP_DEVICE_STATE_ENABLED 1
+#define OMAP_DEVICE_STATE_IDLE 2
+#define OMAP_DEVICE_STATE_SHUTDOWN 3
+
+/**
+ * struct omap_device - omap_device wrapper for platform_devices
+ * @pdev: platform_device
+ * @hwmods: (one .. many per omap_device)
+ * @hwmods_cnt: ARRAY_SIZE() of @hwmods
+ * @pm_lats: ptr to an omap_device_pm_latency table
+ * @pm_lats_cnt: ARRAY_SIZE() of what is passed to @pm_lats
+ * @pm_lat_level: array index of the last odpl entry executed - -1 if never
+ * @dev_wakeup_lat: dev wakeup latency in microseconds
+ * @_dev_wakeup_lat_limit: dev wakeup latency limit in usec - set by OMAP PM
+ * @_state: one of OMAP_DEVICE_STATE_* (see above)
+ * @flags: device flags
+ *
+ * Integrates omap_hwmod data into Linux platform_device.
+ *
+ * Field names beginning with underscores are for the internal use of
+ * the omap_device code.
+ *
+ */
+struct omap_device {
+ struct platform_device pdev;
+ struct omap_hwmod **hwmods;
+ struct omap_device_pm_latency *pm_lats;
+ u32 dev_wakeup_lat;
+ u32 _dev_wakeup_lat_limit;
+ u8 pm_lats_cnt;
+ s8 pm_lat_level;
+ u8 hwmods_cnt;
+ u8 _state;
+};
+
+/* Device driver interface (call via platform_data fn ptrs) */
+
+int omap_device_enable(struct platform_device *pdev);
+int omap_device_idle(struct platform_device *pdev);
+int omap_device_shutdown(struct platform_device *pdev);
+
+/* Core code interface */
+
+int omap_device_count_resources(struct omap_device *od);
+int omap_device_fill_resources(struct omap_device *od, struct resource *res);
+
+struct omap_device *omap_device_build(const char *pdev_name, int pdev_id,
+ struct omap_hwmod *oh, void *pdata,
+ int pdata_len,
+ struct omap_device_pm_latency *pm_lats,
+ int pm_lats_cnt);
+
+struct omap_device *omap_device_build_ss(const char *pdev_name, int pdev_id,
+ struct omap_hwmod **oh, int oh_cnt,
+ void *pdata, int pdata_len,
+ struct omap_device_pm_latency *pm_lats,
+ int pm_lats_cnt);
+
+int omap_device_register(struct omap_device *od);
+
+/* OMAP PM interface */
+int omap_device_align_pm_lat(struct platform_device *pdev,
+ u32 new_wakeup_lat_limit);
+struct powerdomain *omap_device_get_pwrdm(struct omap_device *od);
+
+/* Other */
+
+int omap_device_idle_hwmods(struct omap_device *od);
+int omap_device_enable_hwmods(struct omap_device *od);
+
+int omap_device_disable_clocks(struct omap_device *od);
+int omap_device_enable_clocks(struct omap_device *od);
+
+
+/*
+ * Entries should be kept in latency order ascending
+ *
+ * deact_lat is the maximum number of microseconds required to complete
+ * deactivate_func() at the device's slowest OPP.
+ *
+ * act_lat is the maximum number of microseconds required to complete
+ * activate_func() at the device's slowest OPP.
+ *
+ * This will result in some suboptimal power management decisions at fast
+ * OPPs, but avoids having to recompute all device power management decisions
+ * if the system shifts from a fast OPP to a slow OPP (in order to meet
+ * latency requirements).
+ *
+ * XXX should deactivate_func/activate_func() take platform_device pointers
+ * rather than omap_device pointers?
+ */
+struct omap_device_pm_latency {
+ u32 deactivate_lat;
+ int (*deactivate_func)(struct omap_device *od);
+ u32 activate_lat;
+ int (*activate_func)(struct omap_device *od);
+};
+
+
+#endif
+
diff --git a/arch/arm/plat-omap/include/mach/omap_hwmod.h b/arch/arm/plat-omap/include/mach/omap_hwmod.h
new file mode 100644
index 00000000000..1f79c20e292
--- /dev/null
+++ b/arch/arm/plat-omap/include/mach/omap_hwmod.h
@@ -0,0 +1,447 @@
+/*
+ * omap_hwmod macros, structures
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ * Paul Walmsley
+ *
+ * Created in collaboration with (alphabetical order): Benoit Cousson,
+ * Kevin Hilman, Tony Lindgren, Rajendra Nayak, Vikram Pandita, Sakari
+ * Poussa, Anand Sawant, Santosh Shilimkar, Richard Woodruff
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * These headers and macros are used to define OMAP on-chip module
+ * data and their integration with other OMAP modules and Linux.
+ *
+ * References:
+ * - OMAP2420 Multimedia Processor Silicon Revision 2.1.1, 2.2 (SWPU064)
+ * - OMAP2430 Multimedia Device POP Silicon Revision 2.1 (SWPU090)
+ * - OMAP34xx Multimedia Device Silicon Revision 3.1 (SWPU108)
+ * - OMAP4430 Multimedia Device Silicon Revision 1.0 (SWPU140)
+ * - Open Core Protocol Specification 2.2
+ *
+ * To do:
+ * - add interconnect error log structures
+ * - add pinmuxing
+ * - init_conn_id_bit (CONNID_BIT_VECTOR)
+ * - implement default hwmod SMS/SDRC flags?
+ *
+ */
+#ifndef __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_HWMOD_H
+#define __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_OMAP_HWMOD_H
+
+#include <linux/kernel.h>
+#include <linux/ioport.h>
+
+#include <mach/cpu.h>
+
+struct omap_device;
+
+/* OCP SYSCONFIG bit shifts/masks */
+#define SYSC_MIDLEMODE_SHIFT 12
+#define SYSC_MIDLEMODE_MASK (0x3 << SYSC_MIDLEMODE_SHIFT)
+#define SYSC_CLOCKACTIVITY_SHIFT 8
+#define SYSC_CLOCKACTIVITY_MASK (0x3 << SYSC_CLOCKACTIVITY_SHIFT)
+#define SYSC_SIDLEMODE_SHIFT 3
+#define SYSC_SIDLEMODE_MASK (0x3 << SYSC_SIDLEMODE_SHIFT)
+#define SYSC_ENAWAKEUP_SHIFT 2
+#define SYSC_ENAWAKEUP_MASK (1 << SYSC_ENAWAKEUP_SHIFT)
+#define SYSC_SOFTRESET_SHIFT 1
+#define SYSC_SOFTRESET_MASK (1 << SYSC_SOFTRESET_SHIFT)
+
+/* OCP SYSSTATUS bit shifts/masks */
+#define SYSS_RESETDONE_SHIFT 0
+#define SYSS_RESETDONE_MASK (1 << SYSS_RESETDONE_SHIFT)
+
+/* Master standby/slave idle mode flags */
+#define HWMOD_IDLEMODE_FORCE (1 << 0)
+#define HWMOD_IDLEMODE_NO (1 << 1)
+#define HWMOD_IDLEMODE_SMART (1 << 2)
+
+
+/**
+ * struct omap_hwmod_dma_info - MPU address space handled by the hwmod
+ * @name: name of the DMA channel (module local name)
+ * @dma_ch: DMA channel ID
+ *
+ * @name should be something short, e.g., "tx" or "rx". It is for use
+ * by platform_get_resource_byname(). It is defined locally to the
+ * hwmod.
+ */
+struct omap_hwmod_dma_info {
+ const char *name;
+ u16 dma_ch;
+};
+
+/**
+ * struct omap_hwmod_opt_clk - optional clocks used by this hwmod
+ * @role: "sys", "32k", "tv", etc -- for use in clk_get()
+ * @clkdev_dev_id: opt clock: clkdev dev_id string
+ * @clkdev_con_id: opt clock: clkdev con_id string
+ * @_clk: pointer to the struct clk (filled in at runtime)
+ *
+ * The module's interface clock and main functional clock should not
+ * be added as optional clocks.
+ */
+struct omap_hwmod_opt_clk {
+ const char *role;
+ const char *clkdev_dev_id;
+ const char *clkdev_con_id;
+ struct clk *_clk;
+};
+
+
+/* omap_hwmod_omap2_firewall.flags bits */
+#define OMAP_FIREWALL_L3 (1 << 0)
+#define OMAP_FIREWALL_L4 (1 << 1)
+
+/**
+ * struct omap_hwmod_omap2_firewall - OMAP2/3 device firewall data
+ * @l3_perm_bit: bit shift for L3_PM_*_PERMISSION_*
+ * @l4_fw_region: L4 firewall region ID
+ * @l4_prot_group: L4 protection group ID
+ * @flags: (see omap_hwmod_omap2_firewall.flags macros above)
+ */
+struct omap_hwmod_omap2_firewall {
+ u8 l3_perm_bit;
+ u8 l4_fw_region;
+ u8 l4_prot_group;
+ u8 flags;
+};
+
+
+/*
+ * omap_hwmod_addr_space.flags bits
+ *
+ * ADDR_MAP_ON_INIT: Map this address space during omap_hwmod init.
+ * ADDR_TYPE_RT: Address space contains module register target data.
+ */
+#define ADDR_MAP_ON_INIT (1 << 0)
+#define ADDR_TYPE_RT (1 << 1)
+
+/**
+ * struct omap_hwmod_addr_space - MPU address space handled by the hwmod
+ * @pa_start: starting physical address
+ * @pa_end: ending physical address
+ * @flags: (see omap_hwmod_addr_space.flags macros above)
+ *
+ * Address space doesn't necessarily follow physical interconnect
+ * structure. GPMC is one example.
+ */
+struct omap_hwmod_addr_space {
+ u32 pa_start;
+ u32 pa_end;
+ u8 flags;
+};
+
+
+/*
+ * omap_hwmod_ocp_if.user bits: these indicate the initiators that use this
+ * interface to interact with the hwmod. Used to add sleep dependencies
+ * when the module is enabled or disabled.
+ */
+#define OCP_USER_MPU (1 << 0)
+#define OCP_USER_SDMA (1 << 1)
+
+/* omap_hwmod_ocp_if.flags bits */
+#define OCPIF_HAS_IDLEST (1 << 0)
+#define OCPIF_SWSUP_IDLE (1 << 1)
+#define OCPIF_CAN_BURST (1 << 2)
+
+/**
+ * struct omap_hwmod_ocp_if - OCP interface data
+ * @master: struct omap_hwmod that initiates OCP transactions on this link
+ * @slave: struct omap_hwmod that responds to OCP transactions on this link
+ * @addr: address space associated with this link
+ * @clkdev_dev_id: interface clock: clkdev dev_id string
+ * @clkdev_con_id: interface clock: clkdev con_id string
+ * @_clk: pointer to the interface struct clk (filled in at runtime)
+ * @fw: interface firewall data
+ * @addr_cnt: ARRAY_SIZE(@addr)
+ * @width: OCP data width
+ * @thread_cnt: number of threads
+ * @max_burst_len: maximum burst length in @width sized words (0 if unlimited)
+ * @user: initiators using this interface (see OCP_USER_* macros above)
+ * @flags: OCP interface flags (see OCPIF_* macros above)
+ *
+ * It may also be useful to add a tag_cnt field for OCP2.x devices.
+ *
+ * Parameter names beginning with an underscore are managed internally by
+ * the omap_hwmod code and should not be set during initialization.
+ */
+struct omap_hwmod_ocp_if {
+ struct omap_hwmod *master;
+ struct omap_hwmod *slave;
+ struct omap_hwmod_addr_space *addr;
+ const char *clkdev_dev_id;
+ const char *clkdev_con_id;
+ struct clk *_clk;
+ union {
+ struct omap_hwmod_omap2_firewall omap2;
+ } fw;
+ u8 addr_cnt;
+ u8 width;
+ u8 thread_cnt;
+ u8 max_burst_len;
+ u8 user;
+ u8 flags;
+};
+
+
+/* Macros for use in struct omap_hwmod_sysconfig */
+
+/* Flags for use in omap_hwmod_sysconfig.idlemodes */
+#define MASTER_STANDBY_SHIFT 2
+#define SLAVE_IDLE_SHIFT 0
+#define SIDLE_FORCE (HWMOD_IDLEMODE_FORCE << SLAVE_IDLE_SHIFT)
+#define SIDLE_NO (HWMOD_IDLEMODE_NO << SLAVE_IDLE_SHIFT)
+#define SIDLE_SMART (HWMOD_IDLEMODE_SMART << SLAVE_IDLE_SHIFT)
+#define MSTANDBY_FORCE (HWMOD_IDLEMODE_FORCE << MASTER_STANDBY_SHIFT)
+#define MSTANDBY_NO (HWMOD_IDLEMODE_NO << MASTER_STANDBY_SHIFT)
+#define MSTANDBY_SMART (HWMOD_IDLEMODE_SMART << MASTER_STANDBY_SHIFT)
+
+/* omap_hwmod_sysconfig.sysc_flags capability flags */
+#define SYSC_HAS_AUTOIDLE (1 << 0)
+#define SYSC_HAS_SOFTRESET (1 << 1)
+#define SYSC_HAS_ENAWAKEUP (1 << 2)
+#define SYSC_HAS_EMUFREE (1 << 3)
+#define SYSC_HAS_CLOCKACTIVITY (1 << 4)
+#define SYSC_HAS_SIDLEMODE (1 << 5)
+#define SYSC_HAS_MIDLEMODE (1 << 6)
+#define SYSS_MISSING (1 << 7)
+
+/* omap_hwmod_sysconfig.clockact flags */
+#define CLOCKACT_TEST_BOTH 0x0
+#define CLOCKACT_TEST_MAIN 0x1
+#define CLOCKACT_TEST_ICLK 0x2
+#define CLOCKACT_TEST_NONE 0x3
+
+/**
+ * struct omap_hwmod_sysconfig - hwmod OCP_SYSCONFIG/OCP_SYSSTATUS data
+ * @rev_offs: IP block revision register offset (from module base addr)
+ * @sysc_offs: OCP_SYSCONFIG register offset (from module base addr)
+ * @syss_offs: OCP_SYSSTATUS register offset (from module base addr)
+ * @idlemodes: One or more of {SIDLE,MSTANDBY}_{OFF,FORCE,SMART}
+ * @sysc_flags: SYS{C,S}_HAS* flags indicating SYSCONFIG bits supported
+ * @clockact: the default value of the module CLOCKACTIVITY bits
+ *
+ * @clockact describes to the module which clocks are likely to be
+ * disabled when the PRCM issues its idle request to the module. Some
+ * modules have separate clockdomains for the interface clock and main
+ * functional clock, and can check whether they should acknowledge the
+ * idle request based on the internal module functionality that has
+ * been associated with the clocks marked in @clockact. This field is
+ * only used if HWMOD_SET_DEFAULT_CLOCKACT is set (see below)
+ *
+ */
+struct omap_hwmod_sysconfig {
+ u16 rev_offs;
+ u16 sysc_offs;
+ u16 syss_offs;
+ u8 idlemodes;
+ u8 sysc_flags;
+ u8 clockact;
+};
+
+/**
+ * struct omap_hwmod_omap2_prcm - OMAP2/3-specific PRCM data
+ * @module_offs: PRCM submodule offset from the start of the PRM/CM
+ * @prcm_reg_id: PRCM register ID (e.g., 3 for CM_AUTOIDLE3)
+ * @module_bit: register bit shift for AUTOIDLE, WKST, WKEN, GRPSEL regs
+ * @idlest_reg_id: IDLEST register ID (e.g., 3 for CM_IDLEST3)
+ * @idlest_idle_bit: register bit shift for CM_IDLEST slave idle bit
+ * @idlest_stdby_bit: register bit shift for CM_IDLEST master standby bit
+ *
+ * @prcm_reg_id and @module_bit are specific to the AUTOIDLE, WKST,
+ * WKEN, GRPSEL registers. In an ideal world, no extra information
+ * would be needed for IDLEST information, but alas, there are some
+ * exceptions, so @idlest_reg_id, @idlest_idle_bit, @idlest_stdby_bit
+ * are needed for the IDLEST registers (c.f. 2430 I2CHS, 3430 USBHOST)
+ */
+struct omap_hwmod_omap2_prcm {
+ s16 module_offs;
+ u8 prcm_reg_id;
+ u8 module_bit;
+ u8 idlest_reg_id;
+ u8 idlest_idle_bit;
+ u8 idlest_stdby_bit;
+};
+
+
+/**
+ * struct omap_hwmod_omap4_prcm - OMAP4-specific PRCM data
+ * @module_offs: PRCM submodule offset from the start of the PRM/CM1/CM2
+ * @device_offs: device register offset from @module_offs
+ * @submodule_wkdep_bit: bit shift of the WKDEP range
+ */
+struct omap_hwmod_omap4_prcm {
+ u32 module_offs;
+ u16 device_offs;
+ u8 submodule_wkdep_bit;
+};
+
+
+/*
+ * omap_hwmod.flags definitions
+ *
+ * HWMOD_SWSUP_SIDLE: omap_hwmod code should manually bring module in and out
+ * of idle, rather than relying on module smart-idle
+ * HWMOD_SWSUP_MSTDBY: omap_hwmod code should manually bring module in and out
+ * of standby, rather than relying on module smart-standby
+ * HWMOD_INIT_NO_RESET: don't reset this module at boot - important for
+ * SDRAM controller, etc.
+ * HWMOD_INIT_NO_IDLE: don't idle this module at boot - important for SDRAM
+ * controller, etc.
+ * HWMOD_SET_DEFAULT_CLOCKACT: program CLOCKACTIVITY bits at startup
+ */
+#define HWMOD_SWSUP_SIDLE (1 << 0)
+#define HWMOD_SWSUP_MSTANDBY (1 << 1)
+#define HWMOD_INIT_NO_RESET (1 << 2)
+#define HWMOD_INIT_NO_IDLE (1 << 3)
+#define HWMOD_SET_DEFAULT_CLOCKACT (1 << 4)
+
+/*
+ * omap_hwmod._int_flags definitions
+ * These are for internal use only and are managed by the omap_hwmod code.
+ *
+ * _HWMOD_NO_MPU_PORT: no path exists for the MPU to write to this module
+ * _HWMOD_WAKEUP_ENABLED: set when the omap_hwmod code has enabled ENAWAKEUP
+ * _HWMOD_SYSCONFIG_LOADED: set when the OCP_SYSCONFIG value has been cached
+ */
+#define _HWMOD_NO_MPU_PORT (1 << 0)
+#define _HWMOD_WAKEUP_ENABLED (1 << 1)
+#define _HWMOD_SYSCONFIG_LOADED (1 << 2)
+
+/*
+ * omap_hwmod._state definitions
+ *
+ * INITIALIZED: reset (optionally), initialized, enabled, disabled
+ * (optionally)
+ *
+ *
+ */
+#define _HWMOD_STATE_UNKNOWN 0
+#define _HWMOD_STATE_REGISTERED 1
+#define _HWMOD_STATE_CLKS_INITED 2
+#define _HWMOD_STATE_INITIALIZED 3
+#define _HWMOD_STATE_ENABLED 4
+#define _HWMOD_STATE_IDLE 5
+#define _HWMOD_STATE_DISABLED 6
+
+/**
+ * struct omap_hwmod - integration data for OMAP hardware "modules" (IP blocks)
+ * @name: name of the hwmod
+ * @od: struct omap_device currently associated with this hwmod (internal use)
+ * @mpu_irqs: ptr to an array of MPU IRQs (see also mpu_irqs_cnt)
+ * @sdma_chs: ptr to an array of SDMA channel IDs (see also sdma_chs_cnt)
+ * @prcm: PRCM data pertaining to this hwmod
+ * @clkdev_dev_id: main clock: clkdev dev_id string
+ * @clkdev_con_id: main clock: clkdev con_id string
+ * @_clk: pointer to the main struct clk (filled in at runtime)
+ * @opt_clks: other device clocks that drivers can request (0..*)
+ * @masters: ptr to array of OCP ifs that this hwmod can initiate on
+ * @slaves: ptr to array of OCP ifs that this hwmod can respond on
+ * @sysconfig: device SYSCONFIG/SYSSTATUS register data
+ * @dev_attr: arbitrary device attributes that can be passed to the driver
+ * @_sysc_cache: internal-use hwmod flags
+ * @_rt_va: cached register target start address (internal use)
+ * @_mpu_port_index: cached MPU register target slave ID (internal use)
+ * @msuspendmux_reg_id: CONTROL_MSUSPENDMUX register ID (1-6)
+ * @msuspendmux_shift: CONTROL_MSUSPENDMUX register bit shift
+ * @mpu_irqs_cnt: number of @mpu_irqs
+ * @sdma_chs_cnt: number of @sdma_chs
+ * @opt_clks_cnt: number of @opt_clks
+ * @master_cnt: number of @master entries
+ * @slaves_cnt: number of @slave entries
+ * @response_lat: device OCP response latency (in interface clock cycles)
+ * @_int_flags: internal-use hwmod flags
+ * @_state: internal-use hwmod state
+ * @flags: hwmod flags (documented below)
+ * @omap_chip: OMAP chips this hwmod is present on
+ * @node: list node for hwmod list (internal use)
+ *
+ * @clkdev_dev_id, @clkdev_con_id, and @clk all refer to this module's "main
+ * clock," which for our purposes is defined as "the functional clock needed
+ * for register accesses to complete." Modules may not have a main clock if
+ * the interface clock also serves as a main clock.
+ *
+ * Parameter names beginning with an underscore are managed internally by
+ * the omap_hwmod code and should not be set during initialization.
+ */
+struct omap_hwmod {
+ const char *name;
+ struct omap_device *od;
+ u8 *mpu_irqs;
+ struct omap_hwmod_dma_info *sdma_chs;
+ union {
+ struct omap_hwmod_omap2_prcm omap2;
+ struct omap_hwmod_omap4_prcm omap4;
+ } prcm;
+ const char *clkdev_dev_id;
+ const char *clkdev_con_id;
+ struct clk *_clk;
+ struct omap_hwmod_opt_clk *opt_clks;
+ struct omap_hwmod_ocp_if **masters; /* connect to *_IA */
+ struct omap_hwmod_ocp_if **slaves; /* connect to *_TA */
+ struct omap_hwmod_sysconfig *sysconfig;
+ void *dev_attr;
+ u32 _sysc_cache;
+ void __iomem *_rt_va;
+ struct list_head node;
+ u16 flags;
+ u8 _mpu_port_index;
+ u8 msuspendmux_reg_id;
+ u8 msuspendmux_shift;
+ u8 response_lat;
+ u8 mpu_irqs_cnt;
+ u8 sdma_chs_cnt;
+ u8 opt_clks_cnt;
+ u8 masters_cnt;
+ u8 slaves_cnt;
+ u8 hwmods_cnt;
+ u8 _int_flags;
+ u8 _state;
+ const struct omap_chip_id omap_chip;
+};
+
+int omap_hwmod_init(struct omap_hwmod **ohs);
+int omap_hwmod_register(struct omap_hwmod *oh);
+int omap_hwmod_unregister(struct omap_hwmod *oh);
+struct omap_hwmod *omap_hwmod_lookup(const char *name);
+int omap_hwmod_for_each(int (*fn)(struct omap_hwmod *oh));
+int omap_hwmod_late_init(void);
+
+int omap_hwmod_enable(struct omap_hwmod *oh);
+int omap_hwmod_idle(struct omap_hwmod *oh);
+int omap_hwmod_shutdown(struct omap_hwmod *oh);
+
+int omap_hwmod_enable_clocks(struct omap_hwmod *oh);
+int omap_hwmod_disable_clocks(struct omap_hwmod *oh);
+
+int omap_hwmod_reset(struct omap_hwmod *oh);
+void omap_hwmod_ocp_barrier(struct omap_hwmod *oh);
+
+void omap_hwmod_writel(u32 v, struct omap_hwmod *oh, u16 reg_offs);
+u32 omap_hwmod_readl(struct omap_hwmod *oh, u16 reg_offs);
+
+int omap_hwmod_count_resources(struct omap_hwmod *oh);
+int omap_hwmod_fill_resources(struct omap_hwmod *oh, struct resource *res);
+
+struct powerdomain *omap_hwmod_get_pwrdm(struct omap_hwmod *oh);
+
+int omap_hwmod_add_initiator_dep(struct omap_hwmod *oh,
+ struct omap_hwmod *init_oh);
+int omap_hwmod_del_initiator_dep(struct omap_hwmod *oh,
+ struct omap_hwmod *init_oh);
+
+int omap_hwmod_set_clockact_both(struct omap_hwmod *oh);
+int omap_hwmod_set_clockact_main(struct omap_hwmod *oh);
+int omap_hwmod_set_clockact_iclk(struct omap_hwmod *oh);
+int omap_hwmod_set_clockact_none(struct omap_hwmod *oh);
+
+int omap_hwmod_enable_wakeup(struct omap_hwmod *oh);
+int omap_hwmod_disable_wakeup(struct omap_hwmod *oh);
+
+#endif
diff --git a/arch/arm/plat-omap/include/mach/sdrc.h b/arch/arm/plat-omap/include/mach/sdrc.h
index 93f70d2cbce..1c09c78a48f 100644
--- a/arch/arm/plat-omap/include/mach/sdrc.h
+++ b/arch/arm/plat-omap/include/mach/sdrc.h
@@ -21,19 +21,28 @@
/* SDRC register offsets - read/write with sdrc_{read,write}_reg() */
#define SDRC_SYSCONFIG 0x010
+#define SDRC_CS_CFG 0x040
+#define SDRC_SHARING 0x044
+#define SDRC_ERR_TYPE 0x04C
#define SDRC_DLLA_CTRL 0x060
#define SDRC_DLLA_STATUS 0x064
#define SDRC_DLLB_CTRL 0x068
#define SDRC_DLLB_STATUS 0x06C
#define SDRC_POWER 0x070
+#define SDRC_MCFG_0 0x080
#define SDRC_MR_0 0x084
+#define SDRC_EMR2_0 0x08c
#define SDRC_ACTIM_CTRL_A_0 0x09c
#define SDRC_ACTIM_CTRL_B_0 0x0a0
#define SDRC_RFR_CTRL_0 0x0a4
+#define SDRC_MANUAL_0 0x0a8
+#define SDRC_MCFG_1 0x0B0
#define SDRC_MR_1 0x0B4
+#define SDRC_EMR2_1 0x0BC
#define SDRC_ACTIM_CTRL_A_1 0x0C4
#define SDRC_ACTIM_CTRL_B_1 0x0C8
#define SDRC_RFR_CTRL_1 0x0D4
+#define SDRC_MANUAL_1 0x0D8
/*
* These values represent the number of memory clock cycles between
diff --git a/arch/arm/plat-omap/include/mach/serial.h b/arch/arm/plat-omap/include/mach/serial.h
index def0529c75e..e249186d26e 100644
--- a/arch/arm/plat-omap/include/mach/serial.h
+++ b/arch/arm/plat-omap/include/mach/serial.h
@@ -13,6 +13,8 @@
#ifndef __ASM_ARCH_SERIAL_H
#define __ASM_ARCH_SERIAL_H
+#include <linux/init.h>
+
#if defined(CONFIG_ARCH_OMAP1)
/* OMAP1 serial ports */
#define OMAP_UART1_BASE 0xfffb0000
@@ -53,6 +55,7 @@
})
#ifndef __ASSEMBLER__
+extern void __init omap_serial_early_init(void);
extern void omap_serial_init(void);
extern int omap_uart_can_sleep(void);
extern void omap_uart_check_wakeup(void);
diff --git a/arch/arm/plat-omap/omap-pm-noop.c b/arch/arm/plat-omap/omap-pm-noop.c
new file mode 100644
index 00000000000..e98f0a2a6c2
--- /dev/null
+++ b/arch/arm/plat-omap/omap-pm-noop.c
@@ -0,0 +1,296 @@
+/*
+ * omap-pm-noop.c - OMAP power management interface - dummy version
+ *
+ * This code implements the OMAP power management interface to
+ * drivers, CPUIdle, CPUFreq, and DSP Bridge. It is strictly for
+ * debug/demonstration use, as it does nothing but printk() whenever a
+ * function is called (when DEBUG is defined, below)
+ *
+ * Copyright (C) 2008-2009 Texas Instruments, Inc.
+ * Copyright (C) 2008-2009 Nokia Corporation
+ * Paul Walmsley
+ *
+ * Interface developed by (in alphabetical order):
+ * Karthik Dasu, Tony Lindgren, Rajendra Nayak, Sakari Poussa, Veeramanikandan
+ * Raju, Anand Sawant, Igor Stoppa, Paul Walmsley, Richard Woodruff
+ */
+
+#undef DEBUG
+
+#include <linux/init.h>
+#include <linux/cpufreq.h>
+#include <linux/device.h>
+
+/* Interface documentation is in mach/omap-pm.h */
+#include <mach/omap-pm.h>
+
+#include <mach/powerdomain.h>
+
+struct omap_opp *dsp_opps;
+struct omap_opp *mpu_opps;
+struct omap_opp *l3_opps;
+
+/*
+ * Device-driver-originated constraints (via board-*.c files)
+ */
+
+void omap_pm_set_max_mpu_wakeup_lat(struct device *dev, long t)
+{
+ if (!dev || t < -1) {
+ WARN_ON(1);
+ return;
+ };
+
+ if (t == -1)
+ pr_debug("OMAP PM: remove max MPU wakeup latency constraint: "
+ "dev %s\n", dev_name(dev));
+ else
+ pr_debug("OMAP PM: add max MPU wakeup latency constraint: "
+ "dev %s, t = %ld usec\n", dev_name(dev), t);
+
+ /*
+ * For current Linux, this needs to map the MPU to a
+ * powerdomain, then go through the list of current max lat
+ * constraints on the MPU and find the smallest. If
+ * the latency constraint has changed, the code should
+ * recompute the state to enter for the next powerdomain
+ * state.
+ *
+ * TI CDP code can call constraint_set here.
+ */
+}
+
+void omap_pm_set_min_bus_tput(struct device *dev, u8 agent_id, unsigned long r)
+{
+ if (!dev || (agent_id != OCP_INITIATOR_AGENT &&
+ agent_id != OCP_TARGET_AGENT)) {
+ WARN_ON(1);
+ return;
+ };
+
+ if (r == 0)
+ pr_debug("OMAP PM: remove min bus tput constraint: "
+ "dev %s for agent_id %d\n", dev_name(dev), agent_id);
+ else
+ pr_debug("OMAP PM: add min bus tput constraint: "
+ "dev %s for agent_id %d: rate %ld KiB\n",
+ dev_name(dev), agent_id, r);
+
+ /*
+ * This code should model the interconnect and compute the
+ * required clock frequency, convert that to a VDD2 OPP ID, then
+ * set the VDD2 OPP appropriately.
+ *
+ * TI CDP code can call constraint_set here on the VDD2 OPP.
+ */
+}
+
+void omap_pm_set_max_dev_wakeup_lat(struct device *dev, long t)
+{
+ if (!dev || t < -1) {
+ WARN_ON(1);
+ return;
+ };
+
+ if (t == -1)
+ pr_debug("OMAP PM: remove max device latency constraint: "
+ "dev %s\n", dev_name(dev));
+ else
+ pr_debug("OMAP PM: add max device latency constraint: "
+ "dev %s, t = %ld usec\n", dev_name(dev), t);
+
+ /*
+ * For current Linux, this needs to map the device to a
+ * powerdomain, then go through the list of current max lat
+ * constraints on that powerdomain and find the smallest. If
+ * the latency constraint has changed, the code should
+ * recompute the state to enter for the next powerdomain
+ * state. Conceivably, this code should also determine
+ * whether to actually disable the device clocks or not,
+ * depending on how long it takes to re-enable the clocks.
+ *
+ * TI CDP code can call constraint_set here.
+ */
+}
+
+void omap_pm_set_max_sdma_lat(struct device *dev, long t)
+{
+ if (!dev || t < -1) {
+ WARN_ON(1);
+ return;
+ };
+
+ if (t == -1)
+ pr_debug("OMAP PM: remove max DMA latency constraint: "
+ "dev %s\n", dev_name(dev));
+ else
+ pr_debug("OMAP PM: add max DMA latency constraint: "
+ "dev %s, t = %ld usec\n", dev_name(dev), t);
+
+ /*
+ * For current Linux PM QOS params, this code should scan the
+ * list of maximum CPU and DMA latencies and select the
+ * smallest, then set cpu_dma_latency pm_qos_param
+ * accordingly.
+ *
+ * For future Linux PM QOS params, with separate CPU and DMA
+ * latency params, this code should just set the dma_latency param.
+ *
+ * TI CDP code can call constraint_set here.
+ */
+
+}
+
+
+/*
+ * DSP Bridge-specific constraints
+ */
+
+const struct omap_opp *omap_pm_dsp_get_opp_table(void)
+{
+ pr_debug("OMAP PM: DSP request for OPP table\n");
+
+ /*
+ * Return DSP frequency table here: The final item in the
+ * array should have .rate = .opp_id = 0.
+ */
+
+ return NULL;
+}
+
+void omap_pm_dsp_set_min_opp(u8 opp_id)
+{
+ if (opp_id == 0) {
+ WARN_ON(1);
+ return;
+ }
+
+ pr_debug("OMAP PM: DSP requests minimum VDD1 OPP to be %d\n", opp_id);
+
+ /*
+ *
+ * For l-o dev tree, our VDD1 clk is keyed on OPP ID, so we
+ * can just test to see which is higher, the CPU's desired OPP
+ * ID or the DSP's desired OPP ID, and use whichever is
+ * highest.
+ *
+ * In CDP12.14+, the VDD1 OPP custom clock that controls the DSP
+ * rate is keyed on MPU speed, not the OPP ID. So we need to
+ * map the OPP ID to the MPU speed for use with clk_set_rate()
+ * if it is higher than the current OPP clock rate.
+ *
+ */
+}
+
+
+u8 omap_pm_dsp_get_opp(void)
+{
+ pr_debug("OMAP PM: DSP requests current DSP OPP ID\n");
+
+ /*
+ * For l-o dev tree, call clk_get_rate() on VDD1 OPP clock
+ *
+ * CDP12.14+:
+ * Call clk_get_rate() on the OPP custom clock, map that to an
+ * OPP ID using the tables defined in board-*.c/chip-*.c files.
+ */
+
+ return 0;
+}
+
+/*
+ * CPUFreq-originated constraint
+ *
+ * In the future, this should be handled by custom OPP clocktype
+ * functions.
+ */
+
+struct cpufreq_frequency_table **omap_pm_cpu_get_freq_table(void)
+{
+ pr_debug("OMAP PM: CPUFreq request for frequency table\n");
+
+ /*
+ * Return CPUFreq frequency table here: loop over
+ * all VDD1 clkrates, pull out the mpu_ck frequencies, build
+ * table
+ */
+
+ return NULL;
+}
+
+void omap_pm_cpu_set_freq(unsigned long f)
+{
+ if (f == 0) {
+ WARN_ON(1);
+ return;
+ }
+
+ pr_debug("OMAP PM: CPUFreq requests CPU frequency to be set to %lu\n",
+ f);
+
+ /*
+ * For l-o dev tree, determine whether MPU freq or DSP OPP id
+ * freq is higher. Find the OPP ID corresponding to the
+ * higher frequency. Call clk_round_rate() and clk_set_rate()
+ * on the OPP custom clock.
+ *
+ * CDP should just be able to set the VDD1 OPP clock rate here.
+ */
+}
+
+unsigned long omap_pm_cpu_get_freq(void)
+{
+ pr_debug("OMAP PM: CPUFreq requests current CPU frequency\n");
+
+ /*
+ * Call clk_get_rate() on the mpu_ck.
+ */
+
+ return 0;
+}
+
+/*
+ * Device context loss tracking
+ */
+
+int omap_pm_get_dev_context_loss_count(struct device *dev)
+{
+ if (!dev) {
+ WARN_ON(1);
+ return -EINVAL;
+ };
+
+ pr_debug("OMAP PM: returning context loss count for dev %s\n",
+ dev_name(dev));
+
+ /*
+ * Map the device to the powerdomain. Return the powerdomain
+ * off counter.
+ */
+
+ return 0;
+}
+
+
+/* Should be called before clk framework init */
+int __init omap_pm_if_early_init(struct omap_opp *mpu_opp_table,
+ struct omap_opp *dsp_opp_table,
+ struct omap_opp *l3_opp_table)
+{
+ mpu_opps = mpu_opp_table;
+ dsp_opps = dsp_opp_table;
+ l3_opps = l3_opp_table;
+ return 0;
+}
+
+/* Must be called after clock framework is initialized */
+int __init omap_pm_if_init(void)
+{
+ return 0;
+}
+
+void omap_pm_if_exit(void)
+{
+ /* Deallocate CPUFreq frequency table here */
+}
+
diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c
new file mode 100644
index 00000000000..2c409fc6dd2
--- /dev/null
+++ b/arch/arm/plat-omap/omap_device.c
@@ -0,0 +1,687 @@
+/*
+ * omap_device implementation
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ * Paul Walmsley
+ *
+ * Developed in collaboration with (alphabetical order): Benoit
+ * Cousson, Kevin Hilman, Tony Lindgren, Rajendra Nayak, Vikram
+ * Pandita, Sakari Poussa, Anand Sawant, Santosh Shilimkar, Richard
+ * Woodruff
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This code provides a consistent interface for OMAP device drivers
+ * to control power management and interconnect properties of their
+ * devices.
+ *
+ * In the medium- to long-term, this code should either be
+ * a) implemented via arch-specific pointers in platform_data
+ * or
+ * b) implemented as a proper omap_bus/omap_device in Linux, no more
+ * platform_data func pointers
+ *
+ *
+ * Guidelines for usage by driver authors:
+ *
+ * 1. These functions are intended to be used by device drivers via
+ * function pointers in struct platform_data. As an example,
+ * omap_device_enable() should be passed to the driver as
+ *
+ * struct foo_driver_platform_data {
+ * ...
+ * int (*device_enable)(struct platform_device *pdev);
+ * ...
+ * }
+ *
+ * Note that the generic "device_enable" name is used, rather than
+ * "omap_device_enable". This is so other architectures can pass in their
+ * own enable/disable functions here.
+ *
+ * This should be populated during device setup:
+ *
+ * ...
+ * pdata->device_enable = omap_device_enable;
+ * ...
+ *
+ * 2. Drivers should first check to ensure the function pointer is not null
+ * before calling it, as in:
+ *
+ * if (pdata->device_enable)
+ * pdata->device_enable(pdev);
+ *
+ * This allows other architectures that don't use similar device_enable()/
+ * device_shutdown() functions to execute normally.
+ *
+ * ...
+ *
+ * Suggested usage by device drivers:
+ *
+ * During device initialization:
+ * device_enable()
+ *
+ * During device idle:
+ * (save remaining device context if necessary)
+ * device_idle();
+ *
+ * During device resume:
+ * device_enable();
+ * (restore context if necessary)
+ *
+ * During device shutdown:
+ * device_shutdown()
+ * (device must be reinitialized at this point to use it again)
+ *
+ */
+#undef DEBUG
+
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <linux/io.h>
+
+#include <mach/omap_device.h>
+#include <mach/omap_hwmod.h>
+
+/* These parameters are passed to _omap_device_{de,}activate() */
+#define USE_WAKEUP_LAT 0
+#define IGNORE_WAKEUP_LAT 1
+
+/* XXX this should be moved into a separate file */
+#if defined(CONFIG_ARCH_OMAP2420)
+# define OMAP_32KSYNCT_BASE 0x48004000
+#elif defined(CONFIG_ARCH_OMAP2430)
+# define OMAP_32KSYNCT_BASE 0x49020000
+#elif defined(CONFIG_ARCH_OMAP3430)
+# define OMAP_32KSYNCT_BASE 0x48320000
+#else
+# error Unknown OMAP device
+#endif
+
+/* Private functions */
+
+/**
+ * _read_32ksynct - read the OMAP 32K sync timer
+ *
+ * Returns the current value of the 32KiHz synchronization counter.
+ * XXX this should be generalized to simply read the system clocksource.
+ * XXX this should be moved to a separate synctimer32k.c file
+ */
+static u32 _read_32ksynct(void)
+{
+ if (!cpu_class_is_omap2())
+ BUG();
+
+ return __raw_readl(OMAP2_IO_ADDRESS(OMAP_32KSYNCT_BASE + 0x010));
+}
+
+/**
+ * _omap_device_activate - increase device readiness
+ * @od: struct omap_device *
+ * @ignore_lat: increase to latency target (0) or full readiness (1)?
+ *
+ * Increase readiness of omap_device @od (thus decreasing device
+ * wakeup latency, but consuming more power). If @ignore_lat is
+ * IGNORE_WAKEUP_LAT, make the omap_device fully active. Otherwise,
+ * if @ignore_lat is USE_WAKEUP_LAT, and the device's maximum wakeup
+ * latency is greater than the requested maximum wakeup latency, step
+ * backwards in the omap_device_pm_latency table to ensure the
+ * device's maximum wakeup latency is less than or equal to the
+ * requested maximum wakeup latency. Returns 0.
+ */
+static int _omap_device_activate(struct omap_device *od, u8 ignore_lat)
+{
+ u32 a, b;
+
+ pr_debug("omap_device: %s: activating\n", od->pdev.name);
+
+ while (od->pm_lat_level > 0) {
+ struct omap_device_pm_latency *odpl;
+ int act_lat = 0;
+
+ od->pm_lat_level--;
+
+ odpl = od->pm_lats + od->pm_lat_level;
+
+ if (!ignore_lat &&
+ (od->dev_wakeup_lat <= od->_dev_wakeup_lat_limit))
+ break;
+
+ a = _read_32ksynct();
+
+ /* XXX check return code */
+ odpl->activate_func(od);
+
+ b = _read_32ksynct();
+
+ act_lat = (b - a) >> 15; /* 32KiHz cycles to microseconds */
+
+ pr_debug("omap_device: %s: pm_lat %d: activate: elapsed time "
+ "%d usec\n", od->pdev.name, od->pm_lat_level, act_lat);
+
+ WARN(act_lat > odpl->activate_lat, "omap_device: %s.%d: "
+ "activate step %d took longer than expected (%d > %d)\n",
+ od->pdev.name, od->pdev.id, od->pm_lat_level,
+ act_lat, odpl->activate_lat);
+
+ od->dev_wakeup_lat -= odpl->activate_lat;
+ }
+
+ return 0;
+}
+
+/**
+ * _omap_device_deactivate - decrease device readiness
+ * @od: struct omap_device *
+ * @ignore_lat: decrease to latency target (0) or full inactivity (1)?
+ *
+ * Decrease readiness of omap_device @od (thus increasing device
+ * wakeup latency, but conserving power). If @ignore_lat is
+ * IGNORE_WAKEUP_LAT, make the omap_device fully inactive. Otherwise,
+ * if @ignore_lat is USE_WAKEUP_LAT, and the device's maximum wakeup
+ * latency is less than the requested maximum wakeup latency, step
+ * forwards in the omap_device_pm_latency table to ensure the device's
+ * maximum wakeup latency is less than or equal to the requested
+ * maximum wakeup latency. Returns 0.
+ */
+static int _omap_device_deactivate(struct omap_device *od, u8 ignore_lat)
+{
+ u32 a, b;
+
+ pr_debug("omap_device: %s: deactivating\n", od->pdev.name);
+
+ while (od->pm_lat_level < od->pm_lats_cnt) {
+ struct omap_device_pm_latency *odpl;
+ int deact_lat = 0;
+
+ odpl = od->pm_lats + od->pm_lat_level;
+
+ if (!ignore_lat &&
+ ((od->dev_wakeup_lat + odpl->activate_lat) >
+ od->_dev_wakeup_lat_limit))
+ break;
+
+ a = _read_32ksynct();
+
+ /* XXX check return code */
+ odpl->deactivate_func(od);
+
+ b = _read_32ksynct();
+
+ deact_lat = (b - a) >> 15; /* 32KiHz cycles to microseconds */
+
+ pr_debug("omap_device: %s: pm_lat %d: deactivate: elapsed time "
+ "%d usec\n", od->pdev.name, od->pm_lat_level,
+ deact_lat);
+
+ WARN(deact_lat > odpl->deactivate_lat, "omap_device: %s.%d: "
+ "deactivate step %d took longer than expected (%d > %d)\n",
+ od->pdev.name, od->pdev.id, od->pm_lat_level,
+ deact_lat, odpl->deactivate_lat);
+
+ od->dev_wakeup_lat += odpl->activate_lat;
+
+ od->pm_lat_level++;
+ }
+
+ return 0;
+}
+
+static inline struct omap_device *_find_by_pdev(struct platform_device *pdev)
+{
+ return container_of(pdev, struct omap_device, pdev);
+}
+
+
+/* Public functions for use by core code */
+
+/**
+ * omap_device_count_resources - count number of struct resource entries needed
+ * @od: struct omap_device *
+ *
+ * Count the number of struct resource entries needed for this
+ * omap_device @od. Used by omap_device_build_ss() to determine how
+ * much memory to allocate before calling
+ * omap_device_fill_resources(). Returns the count.
+ */
+int omap_device_count_resources(struct omap_device *od)
+{
+ struct omap_hwmod *oh;
+ int c = 0;
+ int i;
+
+ for (i = 0, oh = *od->hwmods; i < od->hwmods_cnt; i++, oh++)
+ c += omap_hwmod_count_resources(oh);
+
+ pr_debug("omap_device: %s: counted %d total resources across %d "
+ "hwmods\n", od->pdev.name, c, od->hwmods_cnt);
+
+ return c;
+}
+
+/**
+ * omap_device_fill_resources - fill in array of struct resource
+ * @od: struct omap_device *
+ * @res: pointer to an array of struct resource to be filled in
+ *
+ * Populate one or more empty struct resource pointed to by @res with
+ * the resource data for this omap_device @od. Used by
+ * omap_device_build_ss() after calling omap_device_count_resources().
+ * Ideally this function would not be needed at all. If omap_device
+ * replaces platform_device, then we can specify our own
+ * get_resource()/ get_irq()/etc functions that use the underlying
+ * omap_hwmod information. Or if platform_device is extended to use
+ * subarchitecture-specific function pointers, the various
+ * platform_device functions can simply call omap_device internal
+ * functions to get device resources. Hacking around the existing
+ * platform_device code wastes memory. Returns 0.
+ */
+int omap_device_fill_resources(struct omap_device *od, struct resource *res)
+{
+ struct omap_hwmod *oh;
+ int c = 0;
+ int i, r;
+
+ for (i = 0, oh = *od->hwmods; i < od->hwmods_cnt; i++, oh++) {
+ r = omap_hwmod_fill_resources(oh, res);
+ res += r;
+ c += r;
+ }
+
+ return 0;
+}
+
+/**
+ * omap_device_build - build and register an omap_device with one omap_hwmod
+ * @pdev_name: name of the platform_device driver to use
+ * @pdev_id: this platform_device's connection ID
+ * @oh: ptr to the single omap_hwmod that backs this omap_device
+ * @pdata: platform_data ptr to associate with the platform_device
+ * @pdata_len: amount of memory pointed to by @pdata
+ * @pm_lats: pointer to a omap_device_pm_latency array for this device
+ * @pm_lats_cnt: ARRAY_SIZE() of @pm_lats
+ *
+ * Convenience function for building and registering a single
+ * omap_device record, which in turn builds and registers a
+ * platform_device record. See omap_device_build_ss() for more
+ * information. Returns ERR_PTR(-EINVAL) if @oh is NULL; otherwise,
+ * passes along the return value of omap_device_build_ss().
+ */
+struct omap_device *omap_device_build(const char *pdev_name, int pdev_id,
+ struct omap_hwmod *oh, void *pdata,
+ int pdata_len,
+ struct omap_device_pm_latency *pm_lats,
+ int pm_lats_cnt)
+{
+ struct omap_hwmod *ohs[] = { oh };
+
+ if (!oh)
+ return ERR_PTR(-EINVAL);
+
+ return omap_device_build_ss(pdev_name, pdev_id, ohs, 1, pdata,
+ pdata_len, pm_lats, pm_lats_cnt);
+}
+
+/**
+ * omap_device_build_ss - build and register an omap_device with multiple hwmods
+ * @pdev_name: name of the platform_device driver to use
+ * @pdev_id: this platform_device's connection ID
+ * @oh: ptr to the single omap_hwmod that backs this omap_device
+ * @pdata: platform_data ptr to associate with the platform_device
+ * @pdata_len: amount of memory pointed to by @pdata
+ * @pm_lats: pointer to a omap_device_pm_latency array for this device
+ * @pm_lats_cnt: ARRAY_SIZE() of @pm_lats
+ *
+ * Convenience function for building and registering an omap_device
+ * subsystem record. Subsystem records consist of multiple
+ * omap_hwmods. This function in turn builds and registers a
+ * platform_device record. Returns an ERR_PTR() on error, or passes
+ * along the return value of omap_device_register().
+ */
+struct omap_device *omap_device_build_ss(const char *pdev_name, int pdev_id,
+ struct omap_hwmod **ohs, int oh_cnt,
+ void *pdata, int pdata_len,
+ struct omap_device_pm_latency *pm_lats,
+ int pm_lats_cnt)
+{
+ int ret = -ENOMEM;
+ struct omap_device *od;
+ char *pdev_name2;
+ struct resource *res = NULL;
+ int res_count;
+ struct omap_hwmod **hwmods;
+
+ if (!ohs || oh_cnt == 0 || !pdev_name)
+ return ERR_PTR(-EINVAL);
+
+ if (!pdata && pdata_len > 0)
+ return ERR_PTR(-EINVAL);
+
+ pr_debug("omap_device: %s: building with %d hwmods\n", pdev_name,
+ oh_cnt);
+
+ od = kzalloc(sizeof(struct omap_device), GFP_KERNEL);
+ if (!od)
+ return ERR_PTR(-ENOMEM);
+
+ od->hwmods_cnt = oh_cnt;
+
+ hwmods = kzalloc(sizeof(struct omap_hwmod *) * oh_cnt,
+ GFP_KERNEL);
+ if (!hwmods)
+ goto odbs_exit1;
+
+ memcpy(hwmods, ohs, sizeof(struct omap_hwmod *) * oh_cnt);
+ od->hwmods = hwmods;
+
+ pdev_name2 = kzalloc(strlen(pdev_name) + 1, GFP_KERNEL);
+ if (!pdev_name2)
+ goto odbs_exit2;
+ strcpy(pdev_name2, pdev_name);
+
+ od->pdev.name = pdev_name2;
+ od->pdev.id = pdev_id;
+
+ res_count = omap_device_count_resources(od);
+ if (res_count > 0) {
+ res = kzalloc(sizeof(struct resource) * res_count, GFP_KERNEL);
+ if (!res)
+ goto odbs_exit3;
+ }
+ omap_device_fill_resources(od, res);
+
+ od->pdev.num_resources = res_count;
+ od->pdev.resource = res;
+
+ platform_device_add_data(&od->pdev, pdata, pdata_len);
+
+ od->pm_lats = pm_lats;
+ od->pm_lats_cnt = pm_lats_cnt;
+
+ ret = omap_device_register(od);
+ if (ret)
+ goto odbs_exit4;
+
+ return od;
+
+odbs_exit4:
+ kfree(res);
+odbs_exit3:
+ kfree(pdev_name2);
+odbs_exit2:
+ kfree(hwmods);
+odbs_exit1:
+ kfree(od);
+
+ pr_err("omap_device: %s: build failed (%d)\n", pdev_name, ret);
+
+ return ERR_PTR(ret);
+}
+
+/**
+ * omap_device_register - register an omap_device with one omap_hwmod
+ * @od: struct omap_device * to register
+ *
+ * Register the omap_device structure. This currently just calls
+ * platform_device_register() on the underlying platform_device.
+ * Returns the return value of platform_device_register().
+ */
+int omap_device_register(struct omap_device *od)
+{
+ pr_debug("omap_device: %s: registering\n", od->pdev.name);
+
+ return platform_device_register(&od->pdev);
+}
+
+
+/* Public functions for use by device drivers through struct platform_data */
+
+/**
+ * omap_device_enable - fully activate an omap_device
+ * @od: struct omap_device * to activate
+ *
+ * Do whatever is necessary for the hwmods underlying omap_device @od
+ * to be accessible and ready to operate. This generally involves
+ * enabling clocks, setting SYSCONFIG registers; and in the future may
+ * involve remuxing pins. Device drivers should call this function
+ * (through platform_data function pointers) where they would normally
+ * enable clocks, etc. Returns -EINVAL if called when the omap_device
+ * is already enabled, or passes along the return value of
+ * _omap_device_activate().
+ */
+int omap_device_enable(struct platform_device *pdev)
+{
+ int ret;
+ struct omap_device *od;
+
+ od = _find_by_pdev(pdev);
+
+ if (od->_state == OMAP_DEVICE_STATE_ENABLED) {
+ WARN(1, "omap_device: %s.%d: omap_device_enable() called from "
+ "invalid state\n", od->pdev.name, od->pdev.id);
+ return -EINVAL;
+ }
+
+ /* Enable everything if we're enabling this device from scratch */
+ if (od->_state == OMAP_DEVICE_STATE_UNKNOWN)
+ od->pm_lat_level = od->pm_lats_cnt;
+
+ ret = _omap_device_activate(od, IGNORE_WAKEUP_LAT);
+
+ od->dev_wakeup_lat = 0;
+ od->_dev_wakeup_lat_limit = INT_MAX;
+ od->_state = OMAP_DEVICE_STATE_ENABLED;
+
+ return ret;
+}
+
+/**
+ * omap_device_idle - idle an omap_device
+ * @od: struct omap_device * to idle
+ *
+ * Idle omap_device @od by calling as many .deactivate_func() entries
+ * in the omap_device's pm_lats table as is possible without exceeding
+ * the device's maximum wakeup latency limit, pm_lat_limit. Device
+ * drivers should call this function (through platform_data function
+ * pointers) where they would normally disable clocks after operations
+ * complete, etc.. Returns -EINVAL if the omap_device is not
+ * currently enabled, or passes along the return value of
+ * _omap_device_deactivate().
+ */
+int omap_device_idle(struct platform_device *pdev)
+{
+ int ret;
+ struct omap_device *od;
+
+ od = _find_by_pdev(pdev);
+
+ if (od->_state != OMAP_DEVICE_STATE_ENABLED) {
+ WARN(1, "omap_device: %s.%d: omap_device_idle() called from "
+ "invalid state\n", od->pdev.name, od->pdev.id);
+ return -EINVAL;
+ }
+
+ ret = _omap_device_deactivate(od, USE_WAKEUP_LAT);
+
+ od->_state = OMAP_DEVICE_STATE_IDLE;
+
+ return ret;
+}
+
+/**
+ * omap_device_shutdown - shut down an omap_device
+ * @od: struct omap_device * to shut down
+ *
+ * Shut down omap_device @od by calling all .deactivate_func() entries
+ * in the omap_device's pm_lats table and then shutting down all of
+ * the underlying omap_hwmods. Used when a device is being "removed"
+ * or a device driver is being unloaded. Returns -EINVAL if the
+ * omap_device is not currently enabled or idle, or passes along the
+ * return value of _omap_device_deactivate().
+ */
+int omap_device_shutdown(struct platform_device *pdev)
+{
+ int ret, i;
+ struct omap_device *od;
+ struct omap_hwmod *oh;
+
+ od = _find_by_pdev(pdev);
+
+ if (od->_state != OMAP_DEVICE_STATE_ENABLED &&
+ od->_state != OMAP_DEVICE_STATE_IDLE) {
+ WARN(1, "omap_device: %s.%d: omap_device_shutdown() called "
+ "from invalid state\n", od->pdev.name, od->pdev.id);
+ return -EINVAL;
+ }
+
+ ret = _omap_device_deactivate(od, IGNORE_WAKEUP_LAT);
+
+ for (i = 0, oh = *od->hwmods; i < od->hwmods_cnt; i++, oh++)
+ omap_hwmod_shutdown(oh);
+
+ od->_state = OMAP_DEVICE_STATE_SHUTDOWN;
+
+ return ret;
+}
+
+/**
+ * omap_device_align_pm_lat - activate/deactivate device to match wakeup lat lim
+ * @od: struct omap_device *
+ *
+ * When a device's maximum wakeup latency limit changes, call some of
+ * the .activate_func or .deactivate_func function pointers in the
+ * omap_device's pm_lats array to ensure that the device's maximum
+ * wakeup latency is less than or equal to the new latency limit.
+ * Intended to be called by OMAP PM code whenever a device's maximum
+ * wakeup latency limit changes (e.g., via
+ * omap_pm_set_dev_wakeup_lat()). Returns 0 if nothing needs to be
+ * done (e.g., if the omap_device is not currently idle, or if the
+ * wakeup latency is already current with the new limit) or passes
+ * along the return value of _omap_device_deactivate() or
+ * _omap_device_activate().
+ */
+int omap_device_align_pm_lat(struct platform_device *pdev,
+ u32 new_wakeup_lat_limit)
+{
+ int ret = -EINVAL;
+ struct omap_device *od;
+
+ od = _find_by_pdev(pdev);
+
+ if (new_wakeup_lat_limit == od->dev_wakeup_lat)
+ return 0;
+
+ od->_dev_wakeup_lat_limit = new_wakeup_lat_limit;
+
+ if (od->_state != OMAP_DEVICE_STATE_IDLE)
+ return 0;
+ else if (new_wakeup_lat_limit > od->dev_wakeup_lat)
+ ret = _omap_device_deactivate(od, USE_WAKEUP_LAT);
+ else if (new_wakeup_lat_limit < od->dev_wakeup_lat)
+ ret = _omap_device_activate(od, USE_WAKEUP_LAT);
+
+ return ret;
+}
+
+/**
+ * omap_device_get_pwrdm - return the powerdomain * associated with @od
+ * @od: struct omap_device *
+ *
+ * Return the powerdomain associated with the first underlying
+ * omap_hwmod for this omap_device. Intended for use by core OMAP PM
+ * code. Returns NULL on error or a struct powerdomain * upon
+ * success.
+ */
+struct powerdomain *omap_device_get_pwrdm(struct omap_device *od)
+{
+ /*
+ * XXX Assumes that all omap_hwmod powerdomains are identical.
+ * This may not necessarily be true. There should be a sanity
+ * check in here to WARN() if any difference appears.
+ */
+ if (!od->hwmods_cnt)
+ return NULL;
+
+ return omap_hwmod_get_pwrdm(od->hwmods[0]);
+}
+
+/*
+ * Public functions intended for use in omap_device_pm_latency
+ * .activate_func and .deactivate_func function pointers
+ */
+
+/**
+ * omap_device_enable_hwmods - call omap_hwmod_enable() on all hwmods
+ * @od: struct omap_device *od
+ *
+ * Enable all underlying hwmods. Returns 0.
+ */
+int omap_device_enable_hwmods(struct omap_device *od)
+{
+ struct omap_hwmod *oh;
+ int i;
+
+ for (i = 0, oh = *od->hwmods; i < od->hwmods_cnt; i++, oh++)
+ omap_hwmod_enable(oh);
+
+ /* XXX pass along return value here? */
+ return 0;
+}
+
+/**
+ * omap_device_idle_hwmods - call omap_hwmod_idle() on all hwmods
+ * @od: struct omap_device *od
+ *
+ * Idle all underlying hwmods. Returns 0.
+ */
+int omap_device_idle_hwmods(struct omap_device *od)
+{
+ struct omap_hwmod *oh;
+ int i;
+
+ for (i = 0, oh = *od->hwmods; i < od->hwmods_cnt; i++, oh++)
+ omap_hwmod_idle(oh);
+
+ /* XXX pass along return value here? */
+ return 0;
+}
+
+/**
+ * omap_device_disable_clocks - disable all main and interface clocks
+ * @od: struct omap_device *od
+ *
+ * Disable the main functional clock and interface clock for all of the
+ * omap_hwmods associated with the omap_device. Returns 0.
+ */
+int omap_device_disable_clocks(struct omap_device *od)
+{
+ struct omap_hwmod *oh;
+ int i;
+
+ for (i = 0, oh = *od->hwmods; i < od->hwmods_cnt; i++, oh++)
+ omap_hwmod_disable_clocks(oh);
+
+ /* XXX pass along return value here? */
+ return 0;
+}
+
+/**
+ * omap_device_enable_clocks - enable all main and interface clocks
+ * @od: struct omap_device *od
+ *
+ * Enable the main functional clock and interface clock for all of the
+ * omap_hwmods associated with the omap_device. Returns 0.
+ */
+int omap_device_enable_clocks(struct omap_device *od)
+{
+ struct omap_hwmod *oh;
+ int i;
+
+ for (i = 0, oh = *od->hwmods; i < od->hwmods_cnt; i++, oh++)
+ omap_hwmod_enable_clocks(oh);
+
+ /* XXX pass along return value here? */
+ return 0;
+}