diff options
| author |   Sudhakar Rajashekhara <sudhakar.raj@ti.com> | 2009-08-13 14:33:14 -0400 |
|---|---|---|
| committer |   Kevin Hilman <khilman@deeprootsystems.com> | 2009-08-26 11:55:54 +0300 |
| commit | 5cbdf276bd9d9cd3cb9616f8253390096c1a237f (patch) | |
| tree | d351c6e24902e1b6600b1559fedb40c7a0edddbb /arch/arm/mach-davinci/board-da850-evm.c | |
| parent | davinci: Macro to convert GPIO signal to GPIO pin number (diff) | |
| download | linux-dev-5cbdf276bd9d9cd3cb9616f8253390096c1a237f.tar.xz linux-dev-5cbdf276bd9d9cd3cb9616f8253390096c1a237f.zip | |
davinci: Add platform support for da850/omap-l138 GLCD
This patch adds platform support for the graphic display
(Sharp LK043T1DG01) found on DA850/OMAP-L138 based EVM.
Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm/mach-davinci/board-da850-evm.c')
| -rw-r--r-- | arch/arm/mach-davinci/board-da850-evm.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c index 52bfe4cba25c..b1df784ed702 100644 --- a/arch/arm/mach-davinci/board-da850-evm.c +++ b/arch/arm/mach-davinci/board-da850-evm.c @@ -17,6 +17,7 @@ #include <linux/console.h> #include <linux/i2c.h> #include <linux/i2c/at24.h> +#include <linux/gpio.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> @@ -29,6 +30,9 @@ #define DA850_EVM_PHY_MASK 0x1 #define DA850_EVM_MDIO_FREQUENCY 2200000 /* PHY bus frequency */ +#define DA850_LCD_BL_PIN GPIO_TO_PIN(2, 15) +#define DA850_LCD_PWR_PIN GPIO_TO_PIN(8, 10) + static struct davinci_i2c_platform_data da850_evm_i2c_0_pdata = { .bus_freq = 100, /* kHz */ .bus_delay = 0, /* usec */ @@ -59,6 +63,37 @@ static struct snd_platform_data da850_evm_snd_data = { .rxnumevt = 1, }; +static int da850_lcd_hw_init(void) +{ + int status; + + status = gpio_request(DA850_LCD_BL_PIN, "lcd bl\n"); + if (status < 0) + return status; + + status = gpio_request(DA850_LCD_PWR_PIN, "lcd pwr\n"); + if (status < 0) { + gpio_free(DA850_LCD_BL_PIN); + return status; + } + + gpio_direction_output(DA850_LCD_BL_PIN, 0); + gpio_direction_output(DA850_LCD_PWR_PIN, 0); + + /* disable lcd backlight */ + gpio_set_value(DA850_LCD_BL_PIN, 0); + + /* disable lcd power */ + gpio_set_value(DA850_LCD_PWR_PIN, 0); + + /* enable lcd power */ + gpio_set_value(DA850_LCD_PWR_PIN, 1); + + /* enable lcd backlight */ + gpio_set_value(DA850_LCD_BL_PIN, 1); + + return 0; +} static __init void da850_evm_init(void) { @@ -115,6 +150,21 @@ static __init void da850_evm_init(void) ret); da8xx_init_mcasp(0, &da850_evm_snd_data); + + ret = da8xx_pinmux_setup(da850_lcdcntl_pins); + if (ret) + pr_warning("da850_evm_init: lcdcntl mux setup failed: %d\n", + ret); + + ret = da850_lcd_hw_init(); + if (ret) + pr_warning("da850_evm_init: lcd initialization failed: %d\n", + ret); + + ret = da8xx_register_lcdc(); + if (ret) + pr_warning("da850_evm_init: lcdc registration failed: %d\n", + ret); } #ifdef CONFIG_SERIAL_8250_CONSOLE |