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ARM: mach-shmobile: ag5evm: Use the backlight API for brightness control

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Don't hook up brightness control in the display on/off operations, use
the backlight API instead.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Simon Horman <horms@verge.net.au>
This commit is contained in:
Laurent Pinchart 2012-08-15 18:25:27 +02:00
parent f70f4711df
commit 37f4dd1350
1 changed files with 29 additions and 16 deletions
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51
arch/arm/mach-shmobile/board-ag5evm.c
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@ -295,28 +295,38 @@ static unsigned char lcd_backlight_seq[3][2] = {
{ 0x03, 0x01 },
};
static void lcd_backlight_on(void)
static int lcd_backlight_set_brightness(int brightness)
{
struct i2c_adapter *a;
struct i2c_adapter *adap;
struct i2c_msg msg;
int k;
unsigned int i;
int ret;
a = i2c_get_adapter(1);
for (k = 0; a && k < 3; k++) {
msg.addr = 0x6d;
msg.buf = &lcd_backlight_seq[k][0];
msg.len = 2;
msg.flags = 0;
if (i2c_transfer(a, &msg, 1) != 1)
break;
}
}
static void lcd_backlight_reset(void)
{
if (brightness == 0) {
/* Reset the chip */
gpio_set_value(GPIO_PORT235, 0);
mdelay(24);
gpio_set_value(GPIO_PORT235, 1);
return 0;
}
adap = i2c_get_adapter(1);
if (adap == NULL)
return -ENODEV;
for (i = 0; i < ARRAY_SIZE(lcd_backlight_seq); i++) {
msg.addr = 0x6d;
msg.buf = &lcd_backlight_seq[i][0];
msg.len = 2;
msg.flags = 0;
ret = i2c_transfer(adap, &msg, 1);
if (ret < 0)
break;
}
i2c_put_adapter(adap);
return ret < 0 ? ret : 0;
}
/* LCDC0 */
@ -348,8 +358,11 @@ static struct sh_mobile_lcdc_info lcdc0_info = {
.panel_cfg = {
.width = 44,
.height = 79,
.display_on = lcd_backlight_on,
.display_off = lcd_backlight_reset,
},
.bl_info = {
.name = "sh_mobile_lcdc_bl",
.max_brightness = 1,
.set_brightness = lcd_backlight_set_brightness,
},
.tx_dev = &mipidsi0_device,
}
@ -622,7 +635,7 @@ static void __init ag5evm_init(void)
/* LCD backlight controller */
gpio_request(GPIO_PORT235, NULL); /* RESET */
gpio_direction_output(GPIO_PORT235, 0);
lcd_backlight_reset();
lcd_backlight_set_brightness(0);
/* enable SDHI0 on CN15 [SD I/F] */
gpio_request(GPIO_FN_SDHIWP0, NULL);