From 30754acf29a9329185ffd8dffbb0c83b5a539818 Mon Sep 17 00:00:00 2001 From: Hans-Christian Egtvedt Date: Tue, 24 Mar 2009 15:45:18 +0100 Subject: avr32: use GPIO line PB15 on EVKLCD10x boards for backlight The PB15 GPIO line is used to control the enable and disable signal for the backlight regulator on EVKLCD10x boards. This patch hands the I/O line over to the LCDC driver, which will control when to enable and disable the backlight. Signed-off-by: Hans-Christian Egtvedt [haavard.skinnemoen@atmel.com: reverted ac97c change] Signed-off-by: Haavard Skinnemoen --- arch/avr32/boards/atngw100/evklcd10x.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) (limited to 'arch/avr32') diff --git a/arch/avr32/boards/atngw100/evklcd10x.c b/arch/avr32/boards/atngw100/evklcd10x.c index fbc7b03..4e3ab8e 100644 --- a/arch/avr32/boards/atngw100/evklcd10x.c +++ b/arch/avr32/boards/atngw100/evklcd10x.c @@ -11,6 +11,7 @@ #include #include +#include #include #include @@ -19,6 +20,7 @@ #include #include +#include #include static struct ac97c_platform_data __initdata ac97c0_data = { @@ -144,13 +146,29 @@ static struct atmel_lcdfb_info __initdata atevklcd10x_lcdc_data = { }; #endif +static void atevklcd10x_lcdc_power_control(int on) +{ + gpio_set_value(GPIO_PIN_PB(15), on); +} + static int __init atevklcd10x_init(void) { - at32_add_device_ac97c(0, &ac97c0_data); + /* PB15 is connected to the enable line on the boost regulator + * controlling the backlight for the LCD panel. + */ + at32_select_gpio(GPIO_PIN_PB(15), AT32_GPIOF_OUTPUT); + gpio_request(GPIO_PIN_PB(15), "backlight"); + gpio_direction_output(GPIO_PIN_PB(15), 0); + + atevklcd10x_lcdc_data.atmel_lcdfb_power_control = + atevklcd10x_lcdc_power_control; at32_add_device_lcdc(0, &atevklcd10x_lcdc_data, fbmem_start, fbmem_size, ATMEL_LCDC_ALT_18BIT | ATMEL_LCDC_PE_DVAL); + + at32_add_device_ac97c(0, &ac97c0_data); + return 0; } postcore_initcall(atevklcd10x_init); -- cgit v1.1