diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-omap1/Makefile | 3 | ||||
| -rw-r--r-- | arch/arm/mach-omap1/i2c.c | 33 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/Makefile | 3 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/i2c.c | 56 | ||||
| -rw-r--r-- | arch/arm/plat-omap/i2c.c | 44 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/common.h | 14 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/i2c.h | 39 |
7 files changed, 137 insertions, 55 deletions
diff --git a/arch/arm/mach-omap1/Makefile b/arch/arm/mach-omap1/Makefile index ceced8ffe85..191e0cf6ee9 100644 --- a/arch/arm/mach-omap1/Makefile +++ b/arch/arm/mach-omap1/Makefile @@ -18,6 +18,9 @@ obj-$(CONFIG_PM) += pm.o sleep.o obj-$(CONFIG_OMAP_MBOX_FWK) += mailbox_mach.o mailbox_mach-objs := mailbox.o +i2c-omap-$(CONFIG_I2C_OMAP) := i2c.o +obj-y += $(i2c-omap-m) $(i2c-omap-y) + led-y := leds.o # Specific board support diff --git a/arch/arm/mach-omap1/i2c.c b/arch/arm/mach-omap1/i2c.c new file mode 100644 index 00000000000..bc9d12bc1c6 --- /dev/null +++ b/arch/arm/mach-omap1/i2c.c @@ -0,0 +1,33 @@ +/* + * Helper module for board specific I2C bus registration + * + * Copyright (C) 2009 Nokia Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + */ + +#include <plat/i2c.h> +#include <plat/mux.h> + +int __init omap_register_i2c_bus(int bus_id, u32 clkrate, + struct i2c_board_info const *info, + unsigned len) +{ + omap_cfg_reg(I2C_SDA); + omap_cfg_reg(I2C_SCL); + + return omap_plat_register_i2c_bus(bus_id, clkrate, info, len); +} diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index 6e348e528f8..e30e335dc2c 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -64,6 +64,9 @@ iommu-$(CONFIG_ARCH_OMAP3) += omap3-iommu.o obj-$(CONFIG_OMAP_IOMMU) += $(iommu-y) +i2c-omap-$(CONFIG_I2C_OMAP) := i2c.o +obj-y += $(i2c-omap-m) $(i2c-omap-y) + # Specific board support obj-$(CONFIG_MACH_OMAP_GENERIC) += board-generic.o obj-$(CONFIG_MACH_OMAP_H4) += board-h4.o diff --git a/arch/arm/mach-omap2/i2c.c b/arch/arm/mach-omap2/i2c.c new file mode 100644 index 00000000000..789ca8c02f0 --- /dev/null +++ b/arch/arm/mach-omap2/i2c.c @@ -0,0 +1,56 @@ +/* + * Helper module for board specific I2C bus registration + * + * Copyright (C) 2009 Nokia Corporation. + * + * 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 program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + */ + +#include <plat/cpu.h> +#include <plat/i2c.h> +#include <plat/mux.h> + +#include "mux.h" + +int __init omap_register_i2c_bus(int bus_id, u32 clkrate, + struct i2c_board_info const *info, + unsigned len) +{ + if (cpu_is_omap24xx()) { + const int omap24xx_pins[][2] = { + { M19_24XX_I2C1_SCL, L15_24XX_I2C1_SDA }, + { J15_24XX_I2C2_SCL, H19_24XX_I2C2_SDA }, + }; + int scl, sda; + + scl = omap24xx_pins[bus_id - 1][0]; + sda = omap24xx_pins[bus_id - 1][1]; + omap_cfg_reg(sda); + omap_cfg_reg(scl); + } + + /* First I2C bus is not muxable */ + if (cpu_is_omap34xx() && bus_id > 1) { + char mux_name[sizeof("i2c2_scl.i2c2_scl")]; + + sprintf(mux_name, "i2c%i_scl.i2c%i_scl", bus_id, bus_id); + omap_mux_init_signal(mux_name, OMAP_PIN_INPUT); + sprintf(mux_name, "i2c%i_sda.i2c%i_sda", bus_id, bus_id); + omap_mux_init_signal(mux_name, OMAP_PIN_INPUT); + } + + return omap_plat_register_i2c_bus(bus_id, clkrate, info, len); +} diff --git a/arch/arm/plat-omap/i2c.c b/arch/arm/plat-omap/i2c.c index c08362dbb8e..33fff4ef382 100644 --- a/arch/arm/plat-omap/i2c.c +++ b/arch/arm/plat-omap/i2c.c @@ -80,47 +80,8 @@ static struct platform_device omap_i2c_devices[] = { #endif }; -#if defined(CONFIG_ARCH_OMAP24XX) -static const int omap24xx_pins[][2] = { - { M19_24XX_I2C1_SCL, L15_24XX_I2C1_SDA }, - { J15_24XX_I2C2_SCL, H19_24XX_I2C2_SDA }, -}; -#else -static const int omap24xx_pins[][2] = {}; -#endif -#if defined(CONFIG_ARCH_OMAP34XX) -static const int omap34xx_pins[][2] = { - { K21_34XX_I2C1_SCL, J21_34XX_I2C1_SDA}, - { AF15_34XX_I2C2_SCL, AE15_34XX_I2C2_SDA}, - { AF14_34XX_I2C3_SCL, AG14_34XX_I2C3_SDA}, -}; -#else -static const int omap34xx_pins[][2] = {}; -#endif - #define OMAP_I2C_CMDLINE_SETUP (BIT(31)) -static void __init omap_i2c_mux_pins(int bus) -{ - int scl, sda; - - if (cpu_class_is_omap1()) { - scl = I2C_SCL; - sda = I2C_SDA; - } else if (cpu_is_omap24xx()) { - scl = omap24xx_pins[bus][0]; - sda = omap24xx_pins[bus][1]; - } else if (cpu_is_omap34xx()) { - scl = omap34xx_pins[bus][0]; - sda = omap34xx_pins[bus][1]; - } else { - return; - } - - omap_cfg_reg(sda); - omap_cfg_reg(scl); -} - static int __init omap_i2c_nr_ports(void) { int ports = 0; @@ -156,7 +117,6 @@ static int __init omap_i2c_add_bus(int bus_id) res[1].start = irq; } - omap_i2c_mux_pins(bus_id - 1); return platform_device_register(pdev); } @@ -209,7 +169,7 @@ out: subsys_initcall(omap_register_i2c_bus_cmdline); /** - * omap_register_i2c_bus - register I2C bus with device descriptors + * omap_plat_register_i2c_bus - register I2C bus with device descriptors * @bus_id: bus id counting from number 1 * @clkrate: clock rate of the bus in kHz * @info: pointer into I2C device descriptor table or NULL @@ -217,7 +177,7 @@ subsys_initcall(omap_register_i2c_bus_cmdline); * * Returns 0 on success or an error code. */ -int __init omap_register_i2c_bus(int bus_id, u32 clkrate, +int __init omap_plat_register_i2c_bus(int bus_id, u32 clkrate, struct i2c_board_info const *info, unsigned len) { diff --git a/arch/arm/plat-omap/include/plat/common.h b/arch/arm/plat-omap/include/plat/common.h index 2f816fe3ae8..32c22272425 100644 --- a/arch/arm/plat-omap/include/plat/common.h +++ b/arch/arm/plat-omap/include/plat/common.h @@ -27,7 +27,7 @@ #ifndef __ARCH_ARM_MACH_OMAP_COMMON_H #define __ARCH_ARM_MACH_OMAP_COMMON_H -#include <linux/i2c.h> +#include <plat/i2c.h> struct sys_timer; @@ -36,18 +36,6 @@ extern void __iomem *gic_cpu_base_addr; extern void omap_map_common_io(void); extern struct sys_timer omap_timer; -#if defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE) -extern int omap_register_i2c_bus(int bus_id, u32 clkrate, - struct i2c_board_info const *info, - unsigned len); -#else -static inline int omap_register_i2c_bus(int bus_id, u32 clkrate, - struct i2c_board_info const *info, - unsigned len) -{ - return 0; -} -#endif /* IO bases for various OMAP processors */ struct omap_globals { diff --git a/arch/arm/plat-omap/include/plat/i2c.h b/arch/arm/plat-omap/include/plat/i2c.h new file mode 100644 index 00000000000..585d9ca68b9 --- /dev/null +++ b/arch/arm/plat-omap/include/plat/i2c.h @@ -0,0 +1,39 @@ +/* + * Helper module for board specific I2C bus registration + * + * Copyright (C) 2009 Nokia Corporation. + * + * 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 program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + */ + +#include <linux/i2c.h> + +#if defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE) +extern int omap_register_i2c_bus(int bus_id, u32 clkrate, + struct i2c_board_info const *info, + unsigned len); +#else +static inline int omap_register_i2c_bus(int bus_id, u32 clkrate, + struct i2c_board_info const *info, + unsigned len) +{ + return 0; +} +#endif + +int omap_plat_register_i2c_bus(int bus_id, u32 clkrate, + struct i2c_board_info const *info, + unsigned len); |