rk30 phone:wm831x use gpio i2c and fix kernel death

arch/arm/configs/rk30_phone_defconfig

@@ -43,14 +43,6 @@ CONFIG_DEFAULT_MMAP_MIN_ADDR=32768
 CONFIG_ZBOOT_ROM_TEXT=0x0
 CONFIG_ZBOOT_ROM_BSS=0x0
 CONFIG_CMDLINE="console=ttyFIQ0 androidboot.console=ttyFIQ0 init=/init"
-CONFIG_CPU_FREQ=y
-CONFIG_CPU_FREQ_DEFAULT_GOV_INTERACTIVE=y
-CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
-CONFIG_CPU_FREQ_GOV_POWERSAVE=y
-CONFIG_CPU_FREQ_GOV_USERSPACE=y
-CONFIG_CPU_FREQ_GOV_ONDEMAND=y
-CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
-CONFIG_CPU_FREQ_GOV_HOTPLUG=y
 CONFIG_CPU_IDLE=y
 CONFIG_VFP=y
 CONFIG_NEON=y
@@ -252,10 +244,11 @@ CONFIG_UART3_CTS_RTS_RK29=y
 CONFIG_I2C=y
 # CONFIG_I2C_COMPAT is not set
 CONFIG_I2C0_CONTROLLER_RK30=y
-CONFIG_I2C1_CONTROLLER_RK30=y
+# CONFIG_I2C1_RK30 is not set
 CONFIG_I2C2_CONTROLLER_RK30=y
 CONFIG_I2C3_CONTROLLER_RK30=y
 CONFIG_I2C4_CONTROLLER_RK30=y
+CONFIG_I2C_GPIO_RK30=y
 CONFIG_SPI=y
 CONFIG_SPIM_RK29=y
 CONFIG_SPIM0_RK29=y

arch/arm/mach-rk30/board-rk30-phone-wm831x.c

@@ -863,6 +863,6 @@ static struct wm831x_pdata wm831x_platdata = {
 		&wm831x_regulator_init_ldo[10],
 	},
 	/** ISINK1 = 0 and so on*/
-	.isink = {&wm831x_regulator_init_isink[0], &wm831x_regulator_init_isink[1]},
+	//.isink = {&wm831x_regulator_init_isink[0], &wm831x_regulator_init_isink[1]},
 };
 #endif

arch/arm/mach-rk30/board-rk30-phone.c

@@ -336,7 +336,7 @@ static struct ili2102_platform_data ili2102_info = {
 	.y_max			= 800,
 	.gpio_reset     = TOUCH_GPIO_RESET,
 	.gpio_reset_active_low = 1,
-	.gpio_pendown		= TOUCH_GPIO_RESET,
+	.gpio_pendown		= TOUCH_GPIO_INT,
 	.pendown_iomux_name = GPIO4C2_SMCDATA2_TRACEDATA2_NAME,
 	.resetpin_iomux_name = GPIO4D0_SMCDATA8_TRACEDATA8_NAME,
 	.pendown_iomux_mode = GPIO4C_GPIO4C2,
@@ -1605,6 +1605,7 @@ static struct i2c_board_info __initdata i2c0_info[] = {
 #endif
 
 #ifdef CONFIG_I2C1_RK30
+#if 0
 #include "board-rk30-phone-wm831x.c"
 
 static struct i2c_board_info __initdata i2c1_info[] = {
@@ -1619,6 +1620,7 @@ static struct i2c_board_info __initdata i2c1_info[] = {
 #endif
 };
 #endif
+#endif
 
 #ifdef CONFIG_I2C2_RK30
 static struct i2c_board_info __initdata i2c2_info[] = {
@@ -1664,6 +1666,41 @@ static struct i2c_board_info __initdata i2c4_info[] = {
 };
 #endif
 
+#ifdef CONFIG_I2C_GPIO_RK30
+#include "board-rk30-phone-wm831x.c"
+
+#define I2C_SDA_PIN     RK30_PIN2_PD7   //set sda_pin here
+#define I2C_SCL_PIN     RK30_PIN2_PD6   //set scl_pin here
+static int rk30_i2c_io_init(void)
+{
+        //set iomux (gpio) here
+        rk30_mux_api_set(GPIO2D7_I2C1SCL_NAME, GPIO2D_GPIO2D7);
+        rk30_mux_api_set(GPIO2D6_I2C1SDA_NAME, GPIO2D_GPIO2D6);
+
+        return 0;
+}
+struct i2c_gpio_platform_data default_i2c_gpio_data = {
+       .sda_pin = I2C_SDA_PIN,
+       .scl_pin = I2C_SCL_PIN,
+       .udelay = 5, // clk = 500/udelay = 100Khz
+       .timeout = 100,//msecs_to_jiffies(100),
+       .bus_num    = 5,
+       .io_init = rk30_i2c_io_init,
+};
+static struct i2c_board_info __initdata i2c_gpio_info[] = {
+#if defined (CONFIG_MFD_WM831X_I2C)
+		{
+			.type		   = "wm8310",
+			.addr		   = 0x34,
+			.flags		   = 0,
+			.irq		   = RK30_PIN6_PA4,
+			.platform_data = &wm831x_platdata,
+		},
+#endif
+};
+#endif
+
+
 static void __init rk30_i2c_register_board_info(void)
 {
 #ifdef CONFIG_I2C0_RK30
@@ -1681,6 +1718,10 @@ static void __init rk30_i2c_register_board_info(void)
 #ifdef CONFIG_I2C4_RK30
 	i2c_register_board_info(4, i2c4_info, ARRAY_SIZE(i2c4_info));
 #endif
+#ifdef CONFIG_I2C_GPIO_RK30
+	i2c_register_board_info(5, i2c_gpio_info, ARRAY_SIZE(i2c_gpio_info));
+#endif
+
 }
 //end of i2c
 

drivers/mfd/wm831x-i2c.c

@@ -111,7 +111,7 @@ static int wm831x_i2c_write_device(struct wm831x *wm831x, unsigned short reg,
 
 	ret = i2c_transfer(adap, &msg, 1);
 	kfree(tx_buf);
-	return (ret == 1) ? count : ret;
+	return (ret == 1) ? 0 : ret;
 #else
 	struct i2c_client *i2c = wm831x->control_data;
 	unsigned char msg[bytes + 2];

drivers/misc/inv_mpu/mlsl-kernel.c

@@ -40,7 +40,6 @@ static int inv_i2c_write(struct i2c_adapter *i2c_adap,
 	msgs[0].buf = (unsigned char *)data;
 	msgs[0].len = len;
 	msgs[0].scl_rate = MPU_I2C_RATE;
-	//msgs[0].udelay = 200;
 
 	res = i2c_transfer(i2c_adap, msgs, 1);
 	if (res == 1)
@@ -80,14 +79,12 @@ static int inv_i2c_read(struct i2c_adapter *i2c_adap,
 	msgs[0].buf = ®
 	msgs[0].len = 1;
 	msgs[0].scl_rate = MPU_I2C_RATE;
-	//msgs[0].udelay = 200;
 	
 	msgs[1].addr = address;
 	msgs[1].flags = I2C_M_RD;
 	msgs[1].buf = data;
 	msgs[1].len = len;
 	msgs[1].scl_rate = MPU_I2C_RATE;	
-	//msgs[1].udelay = 200;
 
 	res = i2c_transfer(i2c_adap, msgs, 2);
 	if (res == 2)
@@ -107,8 +104,7 @@ static int mpu_memory_read(struct i2c_adapter *i2c_adap,
 	unsigned char bank[2];
 	unsigned char addr[2];
 	unsigned char buf;
-
-	struct i2c_msg msgs[4];
+	struct i2c_msg msgs[2];
 	int res;
 
 	if (!data || !i2c_adap) {
@@ -130,31 +126,35 @@ static int mpu_memory_read(struct i2c_adapter *i2c_adap,
 	msgs[0].buf = bank;
 	msgs[0].len = sizeof(bank);
 	msgs[0].scl_rate = MPU_I2C_RATE;
-	//msgs[0].udelay = 200;
+
+	res = i2c_transfer(i2c_adap, msgs, 1);
+	if (res != 1)
+		return res;
+
+	msgs[0].addr = mpu_addr;
+	msgs[0].flags = 0;
+	msgs[0].buf = addr;
+	msgs[0].len = sizeof(addr);
+	msgs[0].scl_rate = MPU_I2C_RATE;
+	
+	res = i2c_transfer(i2c_adap, msgs, 1);
+	if (res != 1)
+		return res;
+
+	msgs[0].addr = mpu_addr;
+	msgs[0].flags = 0;
+	msgs[0].buf = &buf;
+	msgs[0].len = 1;
+	msgs[0].scl_rate = MPU_I2C_RATE;
 
 	msgs[1].addr = mpu_addr;
-	msgs[1].flags = 0;
-	msgs[1].buf = addr;
-	msgs[1].len = sizeof(addr);
+	msgs[1].flags = I2C_M_RD;
+	msgs[1].buf = data;
+	msgs[1].len = len;
 	msgs[1].scl_rate = MPU_I2C_RATE;
-	//msgs[1].udelay = 200;
-
-	msgs[2].addr = mpu_addr;
-	msgs[2].flags = 0;
-	msgs[2].buf = &buf;
-	msgs[2].len = 1;
-	msgs[2].scl_rate = MPU_I2C_RATE;
-	//msgs[2].udelay = 200;
-
-	msgs[3].addr = mpu_addr;
-	msgs[3].flags = I2C_M_RD;
-	msgs[3].buf = data;
-	msgs[3].len = len;
-	msgs[3].scl_rate = MPU_I2C_RATE;
-	//msgs[3].udelay = 200;
-
-	res = i2c_transfer(i2c_adap, msgs, 4);
-	if (res == 4)
+	
+	res = i2c_transfer(i2c_adap, msgs, 2);
+	if (res == 2)
 		return 0;
 	else if(res == 0)
 		return -EBUSY;
@@ -171,7 +171,7 @@ static int mpu_memory_write(struct i2c_adapter *i2c_adap,
 	unsigned char addr[2];
 	unsigned char buf[513];
 
-	struct i2c_msg msgs[3];
+	struct i2c_msg msgs[2];
 	int res;
 
 	if (!data || !i2c_adap) {
@@ -198,24 +198,28 @@ static int mpu_memory_write(struct i2c_adapter *i2c_adap,
 	msgs[0].buf = bank;
 	msgs[0].len = sizeof(bank);
 	msgs[0].scl_rate = MPU_I2C_RATE;
-	//msgs[0].udelay = 200; 
 
-	msgs[1].addr = mpu_addr;
-	msgs[1].flags = 0;
-	msgs[1].buf = addr;
-	msgs[1].len = sizeof(addr);
-	msgs[1].scl_rate = MPU_I2C_RATE;
-	//msgs[1].udelay = 200;
+	res = i2c_transfer(i2c_adap, msgs, 1);
+	if (res != 1)
+		return res;
 
-	msgs[2].addr = mpu_addr;
-	msgs[2].flags = 0;
-	msgs[2].buf = (unsigned char *)buf;
-	msgs[2].len = len + 1;
-	msgs[2].scl_rate = MPU_I2C_RATE;
-	//msgs[2].udelay = 200;
+	msgs[0].addr = mpu_addr;
+	msgs[0].flags = 0;
+	msgs[0].buf = addr;
+	msgs[0].scl_rate = MPU_I2C_RATE;
 
-	res = i2c_transfer(i2c_adap, msgs, 3);
-	if (res == 3)
+	res = i2c_transfer(i2c_adap, msgs, 1);
+	if (res != 1)
+		return res;
+
+	msgs[0].addr = mpu_addr;
+	msgs[0].flags = 0;
+	msgs[0].buf = (unsigned char *)buf;
+	msgs[0].len = len + 1;
+	msgs[0].scl_rate = MPU_I2C_RATE;
+
+	res = i2c_transfer(i2c_adap, msgs, 1);
+	if (res == 1)
 		return 0;
 	else if(res == 0)
 		return -EBUSY;