diff options
author | Ben Dooks <ben-linux@fluff.org> | 2008-10-31 17:14:55 +0100 |
---|---|---|
committer | Ben Dooks <ben-linux@fluff.org> | 2008-12-16 00:56:41 +0100 |
commit | 1aba834da12989bb769d1dcbf6b0ea29f730c92c (patch) | |
tree | 4f06c055eb265919ab137a49a21d3a5ace5d393d /arch/arm/plat-s3c | |
parent | [ARM] S3C: Add register defines for new style framebuffer (diff) | |
download | linux-1aba834da12989bb769d1dcbf6b0ea29f730c92c.tar.xz linux-1aba834da12989bb769d1dcbf6b0ea29f730c92c.zip |
[ARM] S3C: Add i2c1 device definition
Add device definition and support functions for the
second i2c device (i2c1). If this is selected, the first
i2c bus will become index 0 instead of index -1.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm/plat-s3c')
-rw-r--r-- | arch/arm/plat-s3c/Kconfig | 6 | ||||
-rw-r--r-- | arch/arm/plat-s3c/Makefile | 1 | ||||
-rw-r--r-- | arch/arm/plat-s3c/dev-i2c0.c | 8 | ||||
-rw-r--r-- | arch/arm/plat-s3c/dev-i2c1.c | 68 | ||||
-rw-r--r-- | arch/arm/plat-s3c/include/plat/devs.h | 1 | ||||
-rw-r--r-- | arch/arm/plat-s3c/include/plat/iic.h | 2 |
6 files changed, 84 insertions, 2 deletions
diff --git a/arch/arm/plat-s3c/Kconfig b/arch/arm/plat-s3c/Kconfig index e6e64968a611..d7a6e487f218 100644 --- a/arch/arm/plat-s3c/Kconfig +++ b/arch/arm/plat-s3c/Kconfig @@ -160,3 +160,9 @@ config S3C_DEV_HSMMC1 depends on PLAT_S3C help Compile in platform device definitions for HSMMC channel 1 + +config S3C_DEV_I2C1 + bool + depends on PLAT_S3C + help + Compile in platform device definitions for I2C channel 1 diff --git a/arch/arm/plat-s3c/Makefile b/arch/arm/plat-s3c/Makefile index 187fa95b87d5..3fcee0c44e18 100644 --- a/arch/arm/plat-s3c/Makefile +++ b/arch/arm/plat-s3c/Makefile @@ -23,3 +23,4 @@ obj-y += gpio-config.o obj-$(CONFIG_S3C_DEV_HSMMC) += dev-hsmmc.o obj-$(CONFIG_S3C_DEV_HSMMC1) += dev-hsmmc1.o obj-y += dev-i2c0.o +obj-$(CONFIG_S3C_DEV_I2C1) += dev-i2c1.o diff --git a/arch/arm/plat-s3c/dev-i2c0.c b/arch/arm/plat-s3c/dev-i2c0.c index 21870fd2ec98..2c0128c77c6e 100644 --- a/arch/arm/plat-s3c/dev-i2c0.c +++ b/arch/arm/plat-s3c/dev-i2c0.c @@ -37,12 +37,16 @@ static struct resource s3c_i2c_resource[] = { struct platform_device s3c_device_i2c0 = { .name = "s3c2410-i2c", +#ifdef CONFIG_S3C_DEV_I2C1 + .id = 0, +#else .id = -1, +#endif .num_resources = ARRAY_SIZE(s3c_i2c_resource), .resource = s3c_i2c_resource, }; -struct s3c2410_platform_i2c default_i2c_data __initdata = { +static struct s3c2410_platform_i2c default_i2c_data0 __initdata = { .flags = 0, .slave_addr = 0x10, .bus_freq = 100*1000, @@ -55,7 +59,7 @@ void __init s3c_i2c0_set_platdata(struct s3c2410_platform_i2c *pd) struct s3c2410_platform_i2c *npd; if (!pd) - pd = &default_i2c_data; + pd = &default_i2c_data0; npd = kmemdup(pd, sizeof(struct s3c2410_platform_i2c), GFP_KERNEL); if (!npd) diff --git a/arch/arm/plat-s3c/dev-i2c1.c b/arch/arm/plat-s3c/dev-i2c1.c new file mode 100644 index 000000000000..9658fb0aec95 --- /dev/null +++ b/arch/arm/plat-s3c/dev-i2c1.c @@ -0,0 +1,68 @@ +/* linux/arch/arm/plat-s3c/dev-i2c1.c + * + * Copyright 2008 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * http://armlinux.simtec.co.uk/ + * + * S3C series device definition for i2c device 1 + * + * 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/string.h> +#include <linux/platform_device.h> + +#include <mach/map.h> + +#include <plat/regs-iic.h> +#include <plat/iic.h> +#include <plat/devs.h> +#include <plat/cpu.h> + +static struct resource s3c_i2c_resource[] = { + [0] = { + .start = S3C_PA_IIC1, + .end = S3C_PA_IIC1 + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_IIC1, + .end = IRQ_IIC1, + .flags = IORESOURCE_IRQ, + }, +}; + +struct platform_device s3c_device_i2c1 = { + .name = "s3c2410-i2c", + .id = 1, + .num_resources = ARRAY_SIZE(s3c_i2c_resource), + .resource = s3c_i2c_resource, +}; + +static struct s3c2410_platform_i2c default_i2c_data1 __initdata = { + .flags = 0, + .bus_num = 1, + .slave_addr = 0x10, + .bus_freq = 100*1000, + .max_freq = 400*1000, + .sda_delay = S3C2410_IICLC_SDA_DELAY5 | S3C2410_IICLC_FILTER_ON, +}; + +void __init s3c_i2c1_set_platdata(struct s3c2410_platform_i2c *pd) +{ + struct s3c2410_platform_i2c *npd; + + if (!pd) + pd = &default_i2c_data1; + + npd = kmemdup(pd, sizeof(struct s3c2410_platform_i2c), GFP_KERNEL); + if (!npd) + printk(KERN_ERR "%s: no memory for platform data\n", __func__); + else if (!npd->cfg_gpio) + npd->cfg_gpio = s3c_i2c1_cfg_gpio; + + s3c_device_i2c1.dev.platform_data = npd; +} diff --git a/arch/arm/plat-s3c/include/plat/devs.h b/arch/arm/plat-s3c/include/plat/devs.h index d9e0c543ebd6..0e342d1fafbb 100644 --- a/arch/arm/plat-s3c/include/plat/devs.h +++ b/arch/arm/plat-s3c/include/plat/devs.h @@ -28,6 +28,7 @@ extern struct platform_device s3c_device_usb; extern struct platform_device s3c_device_lcd; extern struct platform_device s3c_device_wdt; extern struct platform_device s3c_device_i2c0; +extern struct platform_device s3c_device_i2c1; extern struct platform_device s3c_device_iis; extern struct platform_device s3c_device_rtc; extern struct platform_device s3c_device_adc; diff --git a/arch/arm/plat-s3c/include/plat/iic.h b/arch/arm/plat-s3c/include/plat/iic.h index 5073b1e74ee8..dc1dfcb9bc6c 100644 --- a/arch/arm/plat-s3c/include/plat/iic.h +++ b/arch/arm/plat-s3c/include/plat/iic.h @@ -48,8 +48,10 @@ struct s3c2410_platform_i2c { * as the driver will no longer carry defaults. */ extern void s3c_i2c0_set_platdata(struct s3c2410_platform_i2c *i2c); +extern void s3c_i2c1_set_platdata(struct s3c2410_platform_i2c *i2c); /* defined by architecture to configure gpio */ extern void s3c_i2c0_cfg_gpio(struct platform_device *dev); +extern void s3c_i2c1_cfg_gpio(struct platform_device *dev); #endif /* __ASM_ARCH_IIC_H */ |