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ARM: mach-shmobile: Dynamic backlight control for Mackerel

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Use GPIO_PORT31 to control the backlight on the Mackerel board.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Magnus Damm 2011-03-21 07:49:45 +00:00 committed by Paul Mundt
parent 6447f55da9
commit 1fbdfcdeac
1 changed files with 21 additions and 1 deletions
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22
arch/arm/mach-shmobile/board-mackerel.c
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@ -295,6 +295,18 @@ static struct fb_videomode mackerel_lcdc_modes[] = {
},
};
static int mackerel_set_brightness(void *board_data, int brightness)
{
gpio_set_value(GPIO_PORT31, brightness);
return 0;
}
static int mackerel_get_brightness(void *board_data)
{
return gpio_get_value(GPIO_PORT31);
}
static struct sh_mobile_lcdc_info lcdc_info = {
.clock_source = LCDC_CLK_BUS,
.ch[0] = {
@ -307,6 +319,14 @@ static struct sh_mobile_lcdc_info lcdc_info = {
.flags = 0,
.lcd_size_cfg.width = 152,
.lcd_size_cfg.height = 91,
.board_cfg = {
.set_brightness = mackerel_set_brightness,
.get_brightness = mackerel_get_brightness,
},
.bl_info = {
.name = "sh_mobile_lcdc_bl",
.max_brightness = 1,
},
}
};
@ -1059,7 +1079,7 @@ static void __init mackerel_init(void)
gpio_request(GPIO_FN_LCDDCK, NULL);
gpio_request(GPIO_PORT31, NULL); /* backlight */
gpio_direction_output(GPIO_PORT31, 1);
gpio_direction_output(GPIO_PORT31, 0); /* off by default */
gpio_request(GPIO_PORT151, NULL); /* LCDDON */
gpio_direction_output(GPIO_PORT151, 1);