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authorMagnus Damm <damm@opensource.se>2011-03-21 07:49:45 +0000
committerPaul Mundt <lethal@linux-sh.org>2011-03-23 22:57:02 +0900
commit1fbdfcdeac3ec49b5fbb5a882ed8ce3309a73b6d (patch)
tree703a9458ae3a25f901f53be5da27f170d2a5c8d8 /arch/arm/mach-shmobile/board-mackerel.c
parent6447f55da90b77faec1697d499ed7986bb4f6de6 (diff)
ARM: mach-shmobile: Dynamic backlight control for Mackerel
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>
Diffstat (limited to 'arch/arm/mach-shmobile/board-mackerel.c')
-rw-r--r--arch/arm/mach-shmobile/board-mackerel.c22
1 files changed, 21 insertions, 1 deletions
diff --git a/arch/arm/mach-shmobile/board-mackerel.c b/arch/arm/mach-shmobile/board-mackerel.c
index 1a63c213e45d..badd8ada0659 100644
--- a/arch/arm/mach-shmobile/board-mackerel.c
+++ b/arch/arm/mach-shmobile/board-mackerel.c
@@ -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);