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Diffstat (limited to 'arch/arm/common')
-rw-r--r--arch/arm/common/locomo.c17
-rw-r--r--arch/arm/common/sa1111.c25
-rw-r--r--arch/arm/common/vic.c96
3 files changed, 114 insertions, 24 deletions
diff --git a/arch/arm/common/locomo.c b/arch/arm/common/locomo.c
index 2293f0ce061..bd36c778c81 100644
--- a/arch/arm/common/locomo.c
+++ b/arch/arm/common/locomo.c
@@ -865,6 +865,7 @@ void locomo_gpio_set_dir(struct device *dev, unsigned int bits, unsigned int dir
spin_unlock_irqrestore(&lchip->lock, flags);
}
+EXPORT_SYMBOL(locomo_gpio_set_dir);
int locomo_gpio_read_level(struct device *dev, unsigned int bits)
{
@@ -882,6 +883,7 @@ int locomo_gpio_read_level(struct device *dev, unsigned int bits)
ret &= bits;
return ret;
}
+EXPORT_SYMBOL(locomo_gpio_read_level);
int locomo_gpio_read_output(struct device *dev, unsigned int bits)
{
@@ -899,6 +901,7 @@ int locomo_gpio_read_output(struct device *dev, unsigned int bits)
ret &= bits;
return ret;
}
+EXPORT_SYMBOL(locomo_gpio_read_output);
void locomo_gpio_write(struct device *dev, unsigned int bits, unsigned int set)
{
@@ -920,6 +923,7 @@ void locomo_gpio_write(struct device *dev, unsigned int bits, unsigned int set)
spin_unlock_irqrestore(&lchip->lock, flags);
}
+EXPORT_SYMBOL(locomo_gpio_write);
static void locomo_m62332_sendbit(void *mapbase, int bit)
{
@@ -1084,13 +1088,12 @@ void locomo_m62332_senddata(struct locomo_dev *ldev, unsigned int dac_data, int
spin_unlock_irqrestore(&lchip->lock, flags);
}
+EXPORT_SYMBOL(locomo_m62332_senddata);
/*
* Frontlight control
*/
-static struct locomo *locomo_chip_driver(struct locomo_dev *ldev);
-
void locomo_frontlight_set(struct locomo_dev *dev, int duty, int vr, int bpwf)
{
unsigned long flags;
@@ -1182,11 +1185,13 @@ int locomo_driver_register(struct locomo_driver *driver)
driver->drv.bus = &locomo_bus_type;
return driver_register(&driver->drv);
}
+EXPORT_SYMBOL(locomo_driver_register);
void locomo_driver_unregister(struct locomo_driver *driver)
{
driver_unregister(&driver->drv);
}
+EXPORT_SYMBOL(locomo_driver_unregister);
static int __init locomo_init(void)
{
@@ -1208,11 +1213,3 @@ module_exit(locomo_exit);
MODULE_DESCRIPTION("Sharp LoCoMo core driver");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("John Lenz <lenz@cs.wisc.edu>");
-
-EXPORT_SYMBOL(locomo_driver_register);
-EXPORT_SYMBOL(locomo_driver_unregister);
-EXPORT_SYMBOL(locomo_gpio_set_dir);
-EXPORT_SYMBOL(locomo_gpio_read_level);
-EXPORT_SYMBOL(locomo_gpio_read_output);
-EXPORT_SYMBOL(locomo_gpio_write);
-EXPORT_SYMBOL(locomo_m62332_senddata);
diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c
index ef12794c3c6..8ba7044c554 100644
--- a/arch/arm/common/sa1111.c
+++ b/arch/arm/common/sa1111.c
@@ -1032,6 +1032,7 @@ unsigned int sa1111_pll_clock(struct sa1111_dev *sadev)
return __sa1111_pll_clock(sachip);
}
+EXPORT_SYMBOL(sa1111_pll_clock);
/**
* sa1111_select_audio_mode - select I2S or AC link mode
@@ -1059,6 +1060,7 @@ void sa1111_select_audio_mode(struct sa1111_dev *sadev, int mode)
spin_unlock_irqrestore(&sachip->lock, flags);
}
+EXPORT_SYMBOL(sa1111_select_audio_mode);
/**
* sa1111_set_audio_rate - set the audio sample rate
@@ -1083,6 +1085,7 @@ int sa1111_set_audio_rate(struct sa1111_dev *sadev, int rate)
return 0;
}
+EXPORT_SYMBOL(sa1111_set_audio_rate);
/**
* sa1111_get_audio_rate - get the audio sample rate
@@ -1100,6 +1103,7 @@ int sa1111_get_audio_rate(struct sa1111_dev *sadev)
return __sa1111_pll_clock(sachip) / (256 * div);
}
+EXPORT_SYMBOL(sa1111_get_audio_rate);
void sa1111_set_io_dir(struct sa1111_dev *sadev,
unsigned int bits, unsigned int dir,
@@ -1128,6 +1132,7 @@ void sa1111_set_io_dir(struct sa1111_dev *sadev,
MODIFY_BITS(gpio + SA1111_GPIO_PCSDR, (bits >> 16) & 255, sleep_dir >> 16);
spin_unlock_irqrestore(&sachip->lock, flags);
}
+EXPORT_SYMBOL(sa1111_set_io_dir);
void sa1111_set_io(struct sa1111_dev *sadev, unsigned int bits, unsigned int v)
{
@@ -1142,6 +1147,7 @@ void sa1111_set_io(struct sa1111_dev *sadev, unsigned int bits, unsigned int v)
MODIFY_BITS(gpio + SA1111_GPIO_PCDWR, (bits >> 16) & 255, v >> 16);
spin_unlock_irqrestore(&sachip->lock, flags);
}
+EXPORT_SYMBOL(sa1111_set_io);
void sa1111_set_sleep_io(struct sa1111_dev *sadev, unsigned int bits, unsigned int v)
{
@@ -1156,6 +1162,7 @@ void sa1111_set_sleep_io(struct sa1111_dev *sadev, unsigned int bits, unsigned i
MODIFY_BITS(gpio + SA1111_GPIO_PCSSR, (bits >> 16) & 255, v >> 16);
spin_unlock_irqrestore(&sachip->lock, flags);
}
+EXPORT_SYMBOL(sa1111_set_sleep_io);
/*
* Individual device operations.
@@ -1176,6 +1183,7 @@ void sa1111_enable_device(struct sa1111_dev *sadev)
sa1111_writel(val | sadev->skpcr_mask, sachip->base + SA1111_SKPCR);
spin_unlock_irqrestore(&sachip->lock, flags);
}
+EXPORT_SYMBOL(sa1111_enable_device);
/**
* sa1111_disable_device - disable an on-chip SA1111 function block
@@ -1192,6 +1200,7 @@ void sa1111_disable_device(struct sa1111_dev *sadev)
sa1111_writel(val & ~sadev->skpcr_mask, sachip->base + SA1111_SKPCR);
spin_unlock_irqrestore(&sachip->lock, flags);
}
+EXPORT_SYMBOL(sa1111_disable_device);
/*
* SA1111 "Register Access Bus."
@@ -1259,17 +1268,20 @@ struct bus_type sa1111_bus_type = {
.suspend = sa1111_bus_suspend,
.resume = sa1111_bus_resume,
};
+EXPORT_SYMBOL(sa1111_bus_type);
int sa1111_driver_register(struct sa1111_driver *driver)
{
driver->drv.bus = &sa1111_bus_type;
return driver_register(&driver->drv);
}
+EXPORT_SYMBOL(sa1111_driver_register);
void sa1111_driver_unregister(struct sa1111_driver *driver)
{
driver_unregister(&driver->drv);
}
+EXPORT_SYMBOL(sa1111_driver_unregister);
static int __init sa1111_init(void)
{
@@ -1290,16 +1302,3 @@ module_exit(sa1111_exit);
MODULE_DESCRIPTION("Intel Corporation SA1111 core driver");
MODULE_LICENSE("GPL");
-
-EXPORT_SYMBOL(sa1111_select_audio_mode);
-EXPORT_SYMBOL(sa1111_set_audio_rate);
-EXPORT_SYMBOL(sa1111_get_audio_rate);
-EXPORT_SYMBOL(sa1111_set_io_dir);
-EXPORT_SYMBOL(sa1111_set_io);
-EXPORT_SYMBOL(sa1111_set_sleep_io);
-EXPORT_SYMBOL(sa1111_enable_device);
-EXPORT_SYMBOL(sa1111_disable_device);
-EXPORT_SYMBOL(sa1111_pll_clock);
-EXPORT_SYMBOL(sa1111_bus_type);
-EXPORT_SYMBOL(sa1111_driver_register);
-EXPORT_SYMBOL(sa1111_driver_unregister);
diff --git a/arch/arm/common/vic.c b/arch/arm/common/vic.c
index 6ed89836e90..f232941de8a 100644
--- a/arch/arm/common/vic.c
+++ b/arch/arm/common/vic.c
@@ -22,10 +22,21 @@
#include <linux/list.h>
#include <linux/io.h>
#include <linux/sysdev.h>
+#include <linux/device.h>
+#include <linux/amba/bus.h>
#include <asm/mach/irq.h>
#include <asm/hardware/vic.h>
+static void vic_ack_irq(unsigned int irq)
+{
+ void __iomem *base = get_irq_chip_data(irq);
+ irq &= 31;
+ writel(1 << irq, base + VIC_INT_ENABLE_CLEAR);
+ /* moreover, clear the soft-triggered, in case it was the reason */
+ writel(1 << irq, base + VIC_INT_SOFT_CLEAR);
+}
+
static void vic_mask_irq(unsigned int irq)
{
void __iomem *base = get_irq_chip_data(irq);
@@ -253,12 +264,16 @@ static inline void vic_pm_register(void __iomem *base, unsigned int irq, u32 arg
static struct irq_chip vic_chip = {
.name = "VIC",
- .ack = vic_mask_irq,
+ .ack = vic_ack_irq,
.mask = vic_mask_irq,
.unmask = vic_unmask_irq,
.set_wake = vic_set_wake,
};
+/* The PL190 cell from ARM has been modified by ST, so handle both here */
+static void vik_init_st(void __iomem *base, unsigned int irq_start,
+ u32 vic_sources);
+
/**
* vic_init - initialise a vectored interrupt controller
* @base: iomem base address
@@ -270,6 +285,28 @@ void __init vic_init(void __iomem *base, unsigned int irq_start,
u32 vic_sources, u32 resume_sources)
{
unsigned int i;
+ u32 cellid = 0;
+ enum amba_vendor vendor;
+
+ /* Identify which VIC cell this one is, by reading the ID */
+ for (i = 0; i < 4; i++) {
+ u32 addr = ((u32)base & PAGE_MASK) + 0xfe0 + (i * 4);
+ cellid |= (readl(addr) & 0xff) << (8 * i);
+ }
+ vendor = (cellid >> 12) & 0xff;
+ printk(KERN_INFO "VIC @%p: id 0x%08x, vendor 0x%02x\n",
+ base, cellid, vendor);
+
+ switch(vendor) {
+ case AMBA_VENDOR_ST:
+ vik_init_st(base, irq_start, vic_sources);
+ return;
+ default:
+ printk(KERN_WARNING "VIC: unknown vendor, continuing anyways\n");
+ /* fall through */
+ case AMBA_VENDOR_ARM:
+ break;
+ }
/* Disable all interrupts initially. */
@@ -306,3 +343,60 @@ void __init vic_init(void __iomem *base, unsigned int irq_start,
vic_pm_register(base, irq_start, resume_sources);
}
+
+/*
+ * The PL190 cell from ARM has been modified by ST to handle 64 interrupts.
+ * The original cell has 32 interrupts, while the modified one has 64,
+ * replocating two blocks 0x00..0x1f in 0x20..0x3f. In that case
+ * the probe function is called twice, with base set to offset 000
+ * and 020 within the page. We call this "second block".
+ */
+static void __init vik_init_st(void __iomem *base, unsigned int irq_start,
+ u32 vic_sources)
+{
+ unsigned int i;
+ int vic_2nd_block = ((unsigned long)base & ~PAGE_MASK) != 0;
+
+ /* Disable all interrupts initially. */
+
+ writel(0, base + VIC_INT_SELECT);
+ writel(0, base + VIC_INT_ENABLE);
+ writel(~0, base + VIC_INT_ENABLE_CLEAR);
+ writel(0, base + VIC_IRQ_STATUS);
+ writel(0, base + VIC_ITCR);
+ writel(~0, base + VIC_INT_SOFT_CLEAR);
+
+ /*
+ * Make sure we clear all existing interrupts. The vector registers
+ * in this cell are after the second block of general registers,
+ * so we can address them using standard offsets, but only from
+ * the second base address, which is 0x20 in the page
+ */
+ if (vic_2nd_block) {
+ writel(0, base + VIC_PL190_VECT_ADDR);
+ for (i = 0; i < 19; i++) {
+ unsigned int value;
+
+ value = readl(base + VIC_PL190_VECT_ADDR);
+ writel(value, base + VIC_PL190_VECT_ADDR);
+ }
+ /* ST has 16 vectors as well, but we don't enable them by now */
+ for (i = 0; i < 16; i++) {
+ void __iomem *reg = base + VIC_VECT_CNTL0 + (i * 4);
+ writel(0, reg);
+ }
+
+ writel(32, base + VIC_PL190_DEF_VECT_ADDR);
+ }
+
+ for (i = 0; i < 32; i++) {
+ if (vic_sources & (1 << i)) {
+ unsigned int irq = irq_start + i;
+
+ set_irq_chip(irq, &vic_chip);
+ set_irq_chip_data(irq, base);
+ set_irq_handler(irq, handle_level_irq);
+ set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-09 13:29:16 +0000