diff options
Diffstat (limited to 'arch/arm/mach-s3c2410/mach-h1940.c')
| -rw-r--r-- | arch/arm/mach-s3c2410/mach-h1940.c | 80 |
1 files changed, 65 insertions, 15 deletions
diff --git a/arch/arm/mach-s3c2410/mach-h1940.c b/arch/arm/mach-s3c2410/mach-h1940.c index cc8660e..974c6e4 100644 --- a/arch/arm/mach-s3c2410/mach-h1940.c +++ b/arch/arm/mach-s3c2410/mach-h1940.c @@ -106,13 +106,7 @@ static struct s3c2410_uartcfg h1940_uartcfgs[] __initdata = { /* Board control latch control */ -static unsigned int latch_state = H1940_LATCH_BIT(H1940_LATCH_LCD_P4) | - H1940_LATCH_BIT(H1940_LATCH_SM803_ENABLE) | - H1940_LATCH_BIT(H1940_LATCH_SDQ1) | - H1940_LATCH_BIT(H1940_LATCH_LCD_P1) | - H1940_LATCH_BIT(H1940_LATCH_LCD_P2) | - H1940_LATCH_BIT(H1940_LATCH_LCD_P3) | - H1940_LATCH_BIT(H1940_LATCH_MAX1698_nSHUTDOWN); +static unsigned int latch_state; static void h1940_latch_control(unsigned int clear, unsigned int set) { @@ -275,15 +269,32 @@ static int h1940_backlight_init(struct device *dev) gpio_direction_output(S3C2410_GPB(0), 0); s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE); s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0); + gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1); return 0; } +static int h1940_backlight_notify(struct device *dev, int brightness) +{ + if (!brightness) { + gpio_direction_output(S3C2410_GPB(0), 1); + gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0); + } else { + gpio_direction_output(S3C2410_GPB(0), 0); + s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE); + s3c_gpio_cfgpin(S3C2410_GPB(0), S3C2410_GPB0_TOUT0); + gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 1); + } + return brightness; +} + static void h1940_backlight_exit(struct device *dev) { gpio_direction_output(S3C2410_GPB(0), 1); + gpio_set_value(H1940_LATCH_MAX1698_nSHUTDOWN, 0); } + static struct platform_pwm_backlight_data backlight_data = { .pwm_id = 0, .max_brightness = 100, @@ -291,6 +302,7 @@ static struct platform_pwm_backlight_data backlight_data = { /* tcnt = 0x31 */ .pwm_period_ns = 36296, .init = h1940_backlight_init, + .notify = h1940_backlight_notify, .exit = h1940_backlight_exit, }; @@ -309,19 +321,37 @@ static void h1940_lcd_power_set(struct plat_lcd_data *pd, int value; if (!power) { - /* set to 3ec */ - gpio_direction_output(S3C2410_GPC(0), 0); + gpio_set_value(S3C2410_GPC(0), 0); /* wait for 3ac */ do { value = gpio_get_value(S3C2410_GPC(6)); } while (value); - /* set to 38c */ - gpio_direction_output(S3C2410_GPC(5), 0); + + gpio_set_value(H1940_LATCH_LCD_P2, 0); + gpio_set_value(H1940_LATCH_LCD_P3, 0); + gpio_set_value(H1940_LATCH_LCD_P4, 0); + + gpio_direction_output(S3C2410_GPC(1), 0); + gpio_direction_output(S3C2410_GPC(4), 0); + + gpio_set_value(H1940_LATCH_LCD_P1, 0); + gpio_set_value(H1940_LATCH_LCD_P0, 0); + + gpio_set_value(S3C2410_GPC(5), 0); + } else { - /* Set to 3ac */ - gpio_direction_output(S3C2410_GPC(5), 1); - /* Set to 3ad */ - gpio_direction_output(S3C2410_GPC(0), 1); + gpio_set_value(H1940_LATCH_LCD_P0, 1); + gpio_set_value(H1940_LATCH_LCD_P1, 1); + + s3c_gpio_cfgpin(S3C2410_GPC(1), S3C_GPIO_SFN(2)); + s3c_gpio_cfgpin(S3C2410_GPC(4), S3C_GPIO_SFN(2)); + + gpio_set_value(S3C2410_GPC(5), 1); + gpio_set_value(S3C2410_GPC(0), 1); + + gpio_set_value(H1940_LATCH_LCD_P3, 1); + gpio_set_value(H1940_LATCH_LCD_P2, 1); + gpio_set_value(H1940_LATCH_LCD_P4, 1); } } @@ -366,6 +396,8 @@ static void __init h1940_map_io(void) #endif s3c_pm_init(); + /* Add latch gpio chip, set latch initial value */ + h1940_latch_control(0, 0); WARN_ON(gpiochip_add(&h1940_latch_gpiochip)); } @@ -404,9 +436,27 @@ static void __init h1940_init(void) writel(tmp, S3C2410_UPLLCON); gpio_request(S3C2410_GPC(0), "LCD power"); + gpio_request(S3C2410_GPC(1), "LCD power"); + gpio_request(S3C2410_GPC(4), "LCD power"); gpio_request(S3C2410_GPC(5), "LCD power"); gpio_request(S3C2410_GPC(6), "LCD power"); + gpio_request(H1940_LATCH_LCD_P0, "LCD power"); + gpio_request(H1940_LATCH_LCD_P1, "LCD power"); + gpio_request(H1940_LATCH_LCD_P2, "LCD power"); + gpio_request(H1940_LATCH_LCD_P3, "LCD power"); + gpio_request(H1940_LATCH_LCD_P4, "LCD power"); + gpio_request(H1940_LATCH_MAX1698_nSHUTDOWN, "LCD power"); + gpio_direction_output(S3C2410_GPC(0), 0); + gpio_direction_output(S3C2410_GPC(1), 0); + gpio_direction_output(S3C2410_GPC(4), 0); + gpio_direction_output(S3C2410_GPC(5), 0); gpio_direction_input(S3C2410_GPC(6)); + gpio_direction_output(H1940_LATCH_LCD_P0, 0); + gpio_direction_output(H1940_LATCH_LCD_P1, 0); + gpio_direction_output(H1940_LATCH_LCD_P2, 0); + gpio_direction_output(H1940_LATCH_LCD_P3, 0); + gpio_direction_output(H1940_LATCH_LCD_P4, 0); + gpio_direction_output(H1940_LATCH_MAX1698_nSHUTDOWN, 0); gpio_request(H1940_LATCH_USB_DP, "USB pullup"); gpio_direction_output(H1940_LATCH_USB_DP, 0); |