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mod i2c

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This commit is contained in:
柯飞雄
2010-05-13 14:09:48 +00:00
committed by 黄涛
parent de8d1aebf9
commit 28482b0cc7
3 changed files with 38 additions and 54 deletions
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84
arch/arm/mach-rk2818/board-midsdk.c
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@@ -150,20 +150,35 @@ static struct map_desc rk2818_io_desc[] __initdata = {
/*****************************************************************************************
* I2C devices
*author: kfx
*****************************************************************************************/
static struct rk2818_i2c_platform_data default_i2c0_data __initdata = {
*****************************************************************************************/
void rk2818_i2c0_cfg_gpio(struct platform_device *dev)
{
rk2818_mux_api_set(GPIOE_I2C0_SEL_NAME, IOMUXA_I2C0);
}
void rk2818_i2c1_cfg_gpio(struct platform_device *dev)
{
rk2818_mux_api_set(GPIOE_U1IR_I2C1_NAME, IOMUXA_I2C1);
}
struct rk2818_i2c_platform_data default_i2c0_data __initdata = {
.bus_num = 0,
.flags = 0,
.slave_addr = 0xff,
.scl_rate = 400*1000,
.clk_id = "i2c0",
.cfg_gpio = rk2818_i2c0_cfg_gpio,
};
static struct rk2818_i2c_platform_data default_i2c1_data __initdata = {
struct rk2818_i2c_platform_data default_i2c1_data __initdata = {
#ifdef CONFIG_I2C0_RK2818
.bus_num = 1,
#else
.bus_num = 0,
#endif
.flags = 0,
.slave_addr = 0xff,
.scl_rate = 400*1000,
.clk_id = "i2c1",
.cfg_gpio = rk2818_i2c1_cfg_gpio,
};
static struct i2c_board_info __initdata board_i2c0_devices[] = {
@@ -209,57 +224,7 @@ static struct i2c_board_info __initdata board_i2c1_devices[] = {
{}
};
static void rk2818_i2c0_cfg_gpio(struct platform_device *dev)
{
rk2818_mux_api_set(GPIOE_I2C0_SEL_NAME, IOMUXA_I2C0);
}
static void rk2818_i2c1_cfg_gpio(struct platform_device *dev)
{
rk2818_mux_api_set(GPIOE_U1IR_I2C1_NAME, IOMUXA_I2C1);
}
static void __init rk2818_i2c0_set_platdata(struct rk2818_i2c_platform_data *pd)
{
struct rk2818_i2c_platform_data *npd;
if (!pd)
pd = &default_i2c0_data;
npd = kmemdup(pd, sizeof(struct rk2818_i2c_platform_data), GFP_KERNEL);
if (!npd)
printk(KERN_ERR "%s: no memory for platform data\n", __func__);
else if (!npd->cfg_gpio)
npd->cfg_gpio = rk2818_i2c0_cfg_gpio;
rk2818_device_i2c0.dev.platform_data = npd;
}
static void __init rk2818_i2c1_set_platdata(struct rk2818_i2c_platform_data *pd)
{
struct rk2818_i2c_platform_data *npd;
if (!pd)
pd = &default_i2c1_data;
npd = kmemdup(pd, sizeof(struct rk2818_i2c_platform_data), GFP_KERNEL);
if (!npd)
printk(KERN_ERR "%s: no memory for platform data\n", __func__);
else if (!npd->cfg_gpio)
npd->cfg_gpio = rk2818_i2c1_cfg_gpio;
rk2818_device_i2c1.dev.platform_data = npd;
}
static void __init rk2818_i2c_board_init(void)
{
rk2818_i2c0_set_platdata(NULL);
rk2818_i2c1_set_platdata(NULL);
i2c_register_board_info(0, board_i2c0_devices,
ARRAY_SIZE(board_i2c0_devices));
i2c_register_board_info(1, board_i2c1_devices,
ARRAY_SIZE(board_i2c1_devices));
}
/*****************************************************************************************
* SPI devices
*author: lhh
@@ -286,8 +251,12 @@ static struct spi_board_info board_spi_devices[] = {
static struct platform_device *devices[] __initdata = {
&rk2818_device_uart1,
&rk2818_device_dm9k,
#ifdef CONFIG_I2C0_RK2818
&rk2818_device_i2c0,
#endif
#ifdef CONFIG_I2C1_RK2818
&rk2818_device_i2c1,
#endif
&rk2818_device_spim,
};
@@ -302,7 +271,14 @@ static void __init machine_rk2818_init_irq(void)
static void __init machine_rk2818_board_init(void)
{
rk2818_i2c_board_init();
#ifdef CONFIG_I2C0_RK2818
i2c_register_board_info(default_i2c0_data.bus_num, board_i2c0_devices,
ARRAY_SIZE(board_i2c0_devices));
#endif
#ifdef CONFIG_I2C1_RK2818
i2c_register_board_info(default_i2c1_data.bus_num, board_i2c1_devices,
ARRAY_SIZE(board_i2c1_devices));
#endif
platform_add_devices(devices, ARRAY_SIZE(devices));
spi_register_board_info(board_spi_devices, ARRAY_SIZE(board_spi_devices));
rk2818_mux_api_set(GPIOB4_SPI0CS0_MMC0D4_NAME,IOMUXA_GPIO0_B4); //IOMUXA_SPI0_CSN0);//use for gpio SPI CS0

6
arch/arm/mach-rk2818/devices.c
View File

@@ -107,12 +107,18 @@ struct platform_device rk2818_device_i2c0 = {
.id = 0,
.num_resources = ARRAY_SIZE(resources_i2c0),
.resource = resources_i2c0,
.dev = {
.platform_data = &default_i2c0_data,
},
};
struct platform_device rk2818_device_i2c1 = {
.name = "rk2818_i2c",
.id = 1,
.num_resources = ARRAY_SIZE(resources_i2c1),
.resource = resources_i2c1,
.dev = {
.platform_data = &default_i2c1_data,
},
};
struct platform_device rk2818_device_uart0 = {

2
arch/arm/mach-rk2818/devices.h
View File

@@ -23,6 +23,8 @@ extern struct platform_device rk2818_device_uart3;
extern struct platform_device rk2818_device_spim;
extern struct platform_device rk2818_device_i2c0;
extern struct platform_device rk2818_device_i2c1;
extern struct rk2818_i2c_platform_data default_i2c0_data;
extern struct rk2818_i2c_platform_data default_i2c1_data;
extern struct platform_device rk2818_device_dm9k;
#endif