Commit 6daa642d authored by Tony Lindgren's avatar Tony Lindgren
Browse files

omap4: Add support for i2c init 



Add support for i2c init for omap4.

This patch is based on and earlier patch by
Santosh Shilimkar <santosh.shilimkar@ti.com>.

Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent b32dd41e

arch/arm/plat-omap/i2c.c

+26 −7
Original line number Diff line number Diff line
@@ -38,6 +38,7 @@ 
#define OMAP2_I2C_BASE1		0x48070000

#define OMAP2_I2C_BASE2		0x48072000

#define OMAP2_I2C_BASE3		0x48060000

#define OMAP4_I2C_BASE4		0x48350000



static const char name[] = "i2c_omap";
@@ -54,11 +55,14 @@ static const char name[] = "i2c_omap"; 


static struct resource i2c_resources[][2] = {

	{ I2C_RESOURCE_BUILDER(0, 0) },

#if	defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)

	{ I2C_RESOURCE_BUILDER(OMAP2_I2C_BASE2, INT_24XX_I2C2_IRQ) },

#if	defined(CONFIG_ARCH_OMAP2PLUS)

	{ I2C_RESOURCE_BUILDER(OMAP2_I2C_BASE2, 0) },

#endif

#if	defined(CONFIG_ARCH_OMAP3)

	{ I2C_RESOURCE_BUILDER(OMAP2_I2C_BASE3, INT_34XX_I2C3_IRQ) },

#if	defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)

	{ I2C_RESOURCE_BUILDER(OMAP2_I2C_BASE3, 0) },

#endif

#if	defined(CONFIG_ARCH_OMAP4)

	{ I2C_RESOURCE_BUILDER(OMAP4_I2C_BASE4, 0) },

#endif

};
@@ -76,12 +80,15 @@ static struct resource i2c_resources[][2] = { 
static struct omap_i2c_bus_platform_data i2c_pdata[ARRAY_SIZE(i2c_resources)];

static struct platform_device omap_i2c_devices[] = {

	I2C_DEV_BUILDER(1, i2c_resources[0], &i2c_pdata[0]),

#if	defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)

#if	defined(CONFIG_ARCH_OMAP2PLUS)

	I2C_DEV_BUILDER(2, i2c_resources[1], &i2c_pdata[1]),

#endif

#if	defined(CONFIG_ARCH_OMAP3)

#if	defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)

	I2C_DEV_BUILDER(3, i2c_resources[2], &i2c_pdata[2]),

#endif

#if	defined(CONFIG_ARCH_OMAP4)

	I2C_DEV_BUILDER(4, i2c_resources[3], &i2c_pdata[3]),

#endif

};



#define OMAP_I2C_CMDLINE_SETUP	(BIT(31))
@@ -96,6 +103,8 @@ static int __init omap_i2c_nr_ports(void) 
		ports = 2;

	else if (cpu_is_omap34xx())

		ports = 3;

	else if (cpu_is_omap44xx())

		ports = 4;



	return ports;

}
@@ -107,6 +116,13 @@ static resource_size_t omap2_i2c_irq[3] __initdata = { 
	INT_34XX_I2C3_IRQ,

};



static resource_size_t omap4_i2c_irq[4] __initdata = {

	OMAP44XX_IRQ_I2C1,

	OMAP44XX_IRQ_I2C2,

	OMAP44XX_IRQ_I2C3,

	OMAP44XX_IRQ_I2C4,

};



static inline int omap1_i2c_add_bus(struct platform_device *pdev, int bus_id)

{

	struct omap_i2c_bus_platform_data *pd;
@@ -129,7 +145,10 @@ static inline int omap2_i2c_add_bus(struct platform_device *pdev, int bus_id) 


	res = pdev->resource;



	if (!cpu_is_omap44xx())

		irq = omap2_i2c_irq;

	else

		irq = omap4_i2c_irq;



	if (bus_id == 1) {

		res[0].start = OMAP2_I2C_BASE1;