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rk30:add backlight config

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This commit is contained in:
lw
2012-02-20 15:31:01 +08:00
parent b972d84721
commit 87043a278c
4 changed files with 110 additions and 104 deletions
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4
arch/arm/configs/rk30_sdk_defconfig
View File

@@ -73,6 +73,10 @@ CONFIG_SPI_FPGA_GPIO_NUM=0
CONFIG_SPI_FPGA_GPIO_IRQ_NUM=0
# CONFIG_HWMON is not set
# CONFIG_MFD_SUPPORT is not set
CONFIG_BACKLIGHT_LCD_SUPPORT=y
# CONFIG_LCD_CLASS_DEVICE is not set
CONFIG_BACKLIGHT_CLASS_DEVICE=y
# CONFIG_BACKLIGHT_GENERIC is not set
# CONFIG_HID_SUPPORT is not set
# CONFIG_USB_SUPPORT is not set
# CONFIG_CMMB is not set

103
arch/arm/mach-rk30/board-rk30-sdk.c
View File

@@ -166,8 +166,111 @@ static struct spi_board_info board_spi_devices[] = {
};
/***********************************************************
* rk30 backlight
************************************************************/
#ifdef CONFIG_BACKLIGHT_RK29_BL
#define PWM_ID 0
#define PWM_MUX_NAME GPIO0A3_PWM0_NAME
#define PWM_MUX_MODE GPIO0A_PWM0
#define PWM_MUX_MODE_GPIO GPIO0A_GPIO0A3
#define PWM_GPIO RK30_PIN0_PA3
#define PWM_EFFECT_VALUE 1
#define LCD_DISP_ON_PIN
#ifdef LCD_DISP_ON_PIN
//#define BL_EN_MUX_NAME GPIOF34_UART3_SEL_NAME
//#define BL_EN_MUX_MODE IOMUXB_GPIO1_B34
#define BL_EN_PIN INVALID_GPIO //?
#define BL_EN_VALUE GPIO_HIGH
#endif
static int rk29_backlight_io_init(void)
{
int ret = 0;
rk30_mux_api_set(PWM_MUX_NAME, PWM_MUX_MODE);
#ifdef LCD_DISP_ON_PIN
// rk30_mux_api_set(BL_EN_MUX_NAME, BL_EN_MUX_MODE);
ret = gpio_request(BL_EN_PIN, NULL);
if(ret != 0)
{
gpio_free(BL_EN_PIN);
}
gpio_direction_output(BL_EN_PIN, 0);
gpio_set_value(BL_EN_PIN, BL_EN_VALUE);
#endif
return ret;
}
static int rk29_backlight_io_deinit(void)
{
int ret = 0;
#ifdef LCD_DISP_ON_PIN
gpio_free(BL_EN_PIN);
#endif
rk30_mux_api_set(PWM_MUX_NAME, PWM_MUX_MODE_GPIO);
return ret;
}
static int rk29_backlight_pwm_suspend(void)
{
int ret = 0;
rk30_mux_api_set(PWM_MUX_NAME, PWM_MUX_MODE_GPIO);
if (gpio_request(PWM_GPIO, NULL)) {
printk("func %s, line %d: request gpio fail\n", __FUNCTION__, __LINE__);
return -1;
}
gpio_direction_output(PWM_GPIO, GPIO_LOW);
#ifdef LCD_DISP_ON_PIN
gpio_direction_output(BL_EN_PIN, 0);
gpio_set_value(BL_EN_PIN, !BL_EN_VALUE);
#endif
return ret;
}
static int rk29_backlight_pwm_resume(void)
{
gpio_free(PWM_GPIO);
rk30_mux_api_set(PWM_MUX_NAME, PWM_MUX_MODE);
#ifdef LCD_DISP_ON_PIN
msleep(30);
gpio_direction_output(BL_EN_PIN, 1);
gpio_set_value(BL_EN_PIN, BL_EN_VALUE);
#endif
return 0;
}
struct rk29_bl_info rk29_bl_info = {
.pwm_id = PWM_ID,
.bl_ref = PWM_EFFECT_VALUE,
.io_init = rk29_backlight_io_init,
.io_deinit = rk29_backlight_io_deinit,
.pwm_suspend = rk29_backlight_pwm_suspend,
.pwm_resume = rk29_backlight_pwm_resume,
};
struct platform_device rk29_device_backlight = {
.name = "rk29_backlight",
.id = -1,
.dev = {
.platform_data = &rk29_bl_info,
}
};
#endif
static struct platform_device *devices[] __initdata = {
#ifdef CONFIG_BACKLIGHT_RK29_BL
&rk29_device_backlight,
#endif
};
// i2c

103
arch/arm/mach-rk30/devices.c
View File

@@ -670,103 +670,6 @@ static void __init rk30_init_spim(void)
}
/***********************************************************
* rk30 backlight
************************************************************/
#ifdef CONFIG_BACKLIGHT_RK29_BL
#define PWM_ID 0
#define PWM_MUX_NAME GPIO0A3_PWM0_NAME
#define PWM_MUX_MODE GPIO0A_PWM0
#define PWM_MUX_MODE_GPIO GPIO0A_GPIO0A3
#define PWM_GPIO RK30_PIN0_PA3
#define PWM_EFFECT_VALUE 1
#define LCD_DISP_ON_PIN
#ifdef LCD_DISP_ON_PIN
//#define BL_EN_MUX_NAME GPIOF34_UART3_SEL_NAME
//#define BL_EN_MUX_MODE IOMUXB_GPIO1_B34
#define BL_EN_PIN INVALID_GPIO //?
#define BL_EN_VALUE GPIO_HIGH
#endif
static int rk29_backlight_io_init(void)
{
int ret = 0;
rk30_mux_api_set(PWM_MUX_NAME, PWM_MUX_MODE);
#ifdef LCD_DISP_ON_PIN
// rk30_mux_api_set(BL_EN_MUX_NAME, BL_EN_MUX_MODE);
ret = gpio_request(BL_EN_PIN, NULL);
if(ret != 0)
{
gpio_free(BL_EN_PIN);
}
gpio_direction_output(BL_EN_PIN, 0);
gpio_set_value(BL_EN_PIN, BL_EN_VALUE);
#endif
return ret;
}
static int rk29_backlight_io_deinit(void)
{
int ret = 0;
#ifdef LCD_DISP_ON_PIN
gpio_free(BL_EN_PIN);
#endif
rk30_mux_api_set(PWM_MUX_NAME, PWM_MUX_MODE_GPIO);
return ret;
}
static int rk29_backlight_pwm_suspend(void)
{
int ret = 0;
rk30_mux_api_set(PWM_MUX_NAME, PWM_MUX_MODE_GPIO);
if (gpio_request(PWM_GPIO, NULL)) {
printk("func %s, line %d: request gpio fail\n", __FUNCTION__, __LINE__);
return -1;
}
gpio_direction_output(PWM_GPIO, GPIO_LOW);
#ifdef LCD_DISP_ON_PIN
gpio_direction_output(BL_EN_PIN, 0);
gpio_set_value(BL_EN_PIN, !BL_EN_VALUE);
#endif
return ret;
}
static int rk29_backlight_pwm_resume(void)
{
gpio_free(PWM_GPIO);
rk30_mux_api_set(PWM_MUX_NAME, PWM_MUX_MODE);
#ifdef LCD_DISP_ON_PIN
msleep(30);
gpio_direction_output(BL_EN_PIN, 1);
gpio_set_value(BL_EN_PIN, BL_EN_VALUE);
#endif
return 0;
}
struct rk29_bl_info rk29_bl_info = {
.pwm_id = PWM_ID,
.bl_ref = PWM_EFFECT_VALUE,
.io_init = rk29_backlight_io_init,
.io_deinit = rk29_backlight_io_deinit,
.pwm_suspend = rk29_backlight_pwm_suspend,
.pwm_resume = rk29_backlight_pwm_resume,
};
struct platform_device rk29_device_backlight = {
.name = "rk29_backlight",
.id = -1,
.dev = {
.platform_data = &rk29_bl_info,
}
};
#endif
#ifdef CONFIG_MTD_NAND_RK29XX
static struct resource resources_nand[] = {
{
@@ -800,11 +703,7 @@ static int __init rk30_init_devices(void)
rk30_init_dma();
rk30_init_uart();
rk30_init_i2c();
rk30_init_spim();
#ifdef CONFIG_BACKLIGHT_RK29_BL
platform_device_register(&rk29_device_backlight);
#endif
rk30_init_spim();
#ifdef CONFIG_MTD_NAND_RK29XX
platform_device_register(&device_nand);
#endif

4
drivers/video/backlight/rk29_backlight.c
View File

@@ -40,9 +40,9 @@
#if defined(CONFIG_ARCH_RK30)
#include <mach/io.h>
#define write_pwm_reg(id, addr, val) __raw_writel(val, addr+(RK30_PWM01_BASE+(id>>1)*0x20000)+id*10)
#define write_pwm_reg(id, addr, val) __raw_writel(val, addr+(RK30_PWM01_BASE+(id>>1)*0x20000)+id*0x10)
#define read_pwm_reg(id, addr) __raw_readl(addr+(RK30_PWM01_BASE+(id>>1)*0x20000+id*0x10))
#else defined(CONFIG_ARCH_RK29)
#elif defined(CONFIG_ARCH_RK29)
#include <mach/rk29_iomap.h>
#define write_pwm_reg(id, addr, val) __raw_writel(val, addr+(RK29_PWM_BASE+id*0x10))
#define read_pwm_reg(id, addr) __raw_readl(addr+(RK29_PWM_BASE+id*0x10))