1 files changed, 11 insertions, 171 deletions

diff --git a/arch/arm/plat-omap/i2c.c b/arch/arm/plat-omap/i2c.c
index a5ce4f0aad3..58213d9714c 100644
--- a/arch/arm/plat-omap/i2c.c
+++ b/arch/arm/plat-omap/i2c.c
@@ -27,175 +27,17 @@
 #include <linux/platform_device.h>
 #include <linux/i2c.h>
 #include <linux/i2c-omap.h>
+#include <linux/slab.h>
+#include <linux/err.h>
+#include <linux/clk.h>
 
-#include <mach/irqs.h>
-#include <plat/mux.h>
 #include <plat/i2c.h>
-#include <plat/omap-pm.h>
 
-#define OMAP_I2C_SIZE		0x3f
-#define OMAP1_I2C_BASE		0xfffb3800
-#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";
-
-#define I2C_RESOURCE_BUILDER(base, irq)			\
-	{						\
-		.start	= (base),			\
-		.end	= (base) + OMAP_I2C_SIZE,	\
-		.flags	= IORESOURCE_MEM,		\
-	},						\
-	{						\
-		.start	= (irq),			\
-		.flags	= IORESOURCE_IRQ,		\
-	},
-
-static struct resource i2c_resources[][2] = {
-	{ I2C_RESOURCE_BUILDER(0, 0) },
-#if	defined(CONFIG_ARCH_OMAP2PLUS)
-	{ I2C_RESOURCE_BUILDER(OMAP2_I2C_BASE2, 0) },
-#endif
-#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
-};
-
-#define I2C_DEV_BUILDER(bus_id, res, data)		\
-	{						\
-		.id	= (bus_id),			\
-		.name	= name,				\
-		.num_resources	= ARRAY_SIZE(res),	\
-		.resource	= (res),		\
-		.dev		= {			\
-			.platform_data	= (data),	\
-		},					\
-	}
-
-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_OMAP2PLUS)
-	I2C_DEV_BUILDER(2, i2c_resources[1], &i2c_pdata[1]),
-#endif
-#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_MAX_CONTROLLERS 4
+static struct omap_i2c_bus_platform_data i2c_pdata[OMAP_I2C_MAX_CONTROLLERS];
 
 #define OMAP_I2C_CMDLINE_SETUP	(BIT(31))
 
-static int __init omap_i2c_nr_ports(void)
-{
-	int ports = 0;
-
-	if (cpu_class_is_omap1())
-		ports = 1;
-	else if (cpu_is_omap24xx())
-		ports = 2;
-	else if (cpu_is_omap34xx())
-		ports = 3;
-	else if (cpu_is_omap44xx())
-		ports = 4;
-
-	return ports;
-}
-
-/* Shared between omap2 and 3 */
-static resource_size_t omap2_i2c_irq[3] __initdata = {
-	INT_24XX_I2C1_IRQ,
-	INT_24XX_I2C2_IRQ,
-	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;
-	struct resource *res;
-
-	pd = pdev->dev.platform_data;
-	res = pdev->resource;
-	res[0].start = OMAP1_I2C_BASE;
-	res[0].end = res[0].start + OMAP_I2C_SIZE;
-	res[1].start = INT_I2C;
-	omap1_i2c_mux_pins(bus_id);
-
-	return platform_device_register(pdev);
-}
-
-/*
- * XXX This function is a temporary compatibility wrapper - only
- * needed until the I2C driver can be converted to call
- * omap_pm_set_max_dev_wakeup_lat() and handle a return code.
- */
-static void omap_pm_set_max_mpu_wakeup_lat_compat(struct device *dev, long t)
-{
-	omap_pm_set_max_mpu_wakeup_lat(dev, t);
-}
-
-static inline int omap2_i2c_add_bus(struct platform_device *pdev, int bus_id)
-{
-	struct resource *res;
-	resource_size_t *irq;
-
-	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;
-		res[0].end = res[0].start + OMAP_I2C_SIZE;
-	}
-
-	res[1].start = irq[bus_id - 1];
-	omap2_i2c_mux_pins(bus_id);
-
-	/*
-	 * When waiting for completion of a i2c transfer, we need to
-	 * set a wake up latency constraint for the MPU. This is to
-	 * ensure quick enough wakeup from idle, when transfer
-	 * completes.
-	 */
-	if (cpu_is_omap34xx()) {
-		struct omap_i2c_bus_platform_data *pd;
-
-		pd = pdev->dev.platform_data;
-		pd->set_mpu_wkup_lat = omap_pm_set_max_mpu_wakeup_lat_compat;
-	}
-
-	return platform_device_register(pdev);
-}
-
-static int __init omap_i2c_add_bus(int bus_id)
-{
-	struct platform_device *pdev;
-
-	pdev = &omap_i2c_devices[bus_id - 1];
-
-	if (cpu_class_is_omap1())
-		return omap1_i2c_add_bus(pdev, bus_id);
-	else
-		return omap2_i2c_add_bus(pdev, bus_id);
-}
-
 /**
  * omap_i2c_bus_setup - Process command line options for the I2C bus speed
  * @str: String of options
@@ -209,12 +51,11 @@ static int __init omap_i2c_add_bus(int bus_id)
  */
 static int __init omap_i2c_bus_setup(char *str)
 {
-	int ports;
 	int ints[3];
 
-	ports = omap_i2c_nr_ports();
 	get_options(str, 3, ints);
-	if (ints[0] < 2 || ints[1] < 1 || ints[1] > ports)
+	if (ints[0] < 2 || ints[1] < 1 ||
+			ints[1] > OMAP_I2C_MAX_CONTROLLERS)
 		return 0;
 	i2c_pdata[ints[1] - 1].clkrate = ints[2];
 	i2c_pdata[ints[1] - 1].clkrate |= OMAP_I2C_CMDLINE_SETUP;
@@ -227,14 +68,14 @@ __setup("i2c_bus=", omap_i2c_bus_setup);
  * Register busses defined in command line but that are not registered with
  * omap_register_i2c_bus from board initialization code.
  */
-static int __init omap_register_i2c_bus_cmdline(void)
+int __init omap_register_i2c_bus_cmdline(void)
 {
 	int i, err = 0;
 
 	for (i = 0; i < ARRAY_SIZE(i2c_pdata); i++)
 		if (i2c_pdata[i].clkrate & OMAP_I2C_CMDLINE_SETUP) {
 			i2c_pdata[i].clkrate &= ~OMAP_I2C_CMDLINE_SETUP;
-			err = omap_i2c_add_bus(i + 1);
+			err = omap_i2c_add_bus(&i2c_pdata[i], i + 1);
 			if (err)
 				goto out;
 		}
@@ -242,7 +83,6 @@ static int __init omap_register_i2c_bus_cmdline(void)
 out:
 	return err;
 }
-subsys_initcall(omap_register_i2c_bus_cmdline);
 
 /**
  * omap_register_i2c_bus - register I2C bus with device descriptors
@@ -259,7 +99,7 @@ int __init omap_register_i2c_bus(int bus_id, u32 clkrate,
 {
 	int err;
 
-	BUG_ON(bus_id < 1 || bus_id > omap_i2c_nr_ports());
+	BUG_ON(bus_id < 1 || bus_id > OMAP_I2C_MAX_CONTROLLERS);
 
 	if (info) {
 		err = i2c_register_board_info(bus_id, info, len);
@@ -272,5 +112,5 @@ int __init omap_register_i2c_bus(int bus_id, u32 clkrate,
 
 	i2c_pdata[bus_id - 1].clkrate &= ~OMAP_I2C_CMDLINE_SETUP;
 
-	return omap_i2c_add_bus(bus_id);
+	return omap_i2c_add_bus(&i2c_pdata[bus_id - 1], bus_id);
 }