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ARM: imx: eukrea_mbimxsd: add backlight and lcd support 

Signed-off-by: Eric Bénard <eric@eukrea.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Denis Carikli 2012-05-08 09:20:24 +02:00 committed by Sascha Hauer
parent 7138a7f9ac
commit 13d1dd83a5
1 changed files with 74 additions and 0 deletions
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74
arch/arm/mach-imx/eukrea_mbimxsd-baseboard.c
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@ -28,6 +28,8 @@
#include <linux/platform_device.h>
#include <linux/input.h>
#include <linux/i2c.h>
#include <video/platform_lcd.h>
#include <linux/backlight.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
@ -71,10 +73,57 @@ static iomux_v3_cfg_t eukrea_mbimxsd_pads[] = {
MX51_PAD_AUD3_BB_RXD__AUD3_RXD,
MX51_PAD_AUD3_BB_CK__AUD3_TXC,
MX51_PAD_AUD3_BB_FS__AUD3_TXFS,
/* LCD Backlight */
MX51_PAD_DI1_D1_CS__GPIO3_4,
/* LCD RST */
MX51_PAD_CSI1_D9__GPIO3_13,
};
#define GPIO_LED1 IMX_GPIO_NR(3, 30)
#define GPIO_SWITCH1 IMX_GPIO_NR(3, 31)
#define GPIO_LCDRST IMX_GPIO_NR(3, 13)
#define GPIO_LCDBL IMX_GPIO_NR(3, 4)
static void eukrea_mbimxsd51_lcd_power_set(struct plat_lcd_data *pd,
unsigned int power)
{
if (power)
gpio_direction_output(GPIO_LCDRST, 1);
else
gpio_direction_output(GPIO_LCDRST, 0);
}
static struct plat_lcd_data eukrea_mbimxsd51_lcd_power_data = {
.set_power = eukrea_mbimxsd51_lcd_power_set,
};
static struct platform_device eukrea_mbimxsd51_lcd_powerdev = {
.name = "platform-lcd",
.dev.platform_data = &eukrea_mbimxsd51_lcd_power_data,
};
static void eukrea_mbimxsd51_bl_set_intensity(int intensity)
{
if (intensity)
gpio_direction_output(GPIO_LCDBL, 1);
else
gpio_direction_output(GPIO_LCDBL, 0);
}
static struct generic_bl_info eukrea_mbimxsd51_bl_info = {
.name = "eukrea_mbimxsd51-bl",
.max_intensity = 0xff,
.default_intensity = 0xff,
.set_bl_intensity = eukrea_mbimxsd51_bl_set_intensity,
};
static struct platform_device eukrea_mbimxsd51_bl_dev = {
.name = "generic-bl",
.id = 1,
.dev = {
.platform_data = &eukrea_mbimxsd51_bl_info,
},
};
static const struct gpio_led eukrea_mbimxsd_leds[] __initconst = {
{
@ -122,6 +171,19 @@ struct imx_ssi_platform_data eukrea_mbimxsd_ssi_pdata __initconst = {
.flags = IMX_SSI_SYN | IMX_SSI_NET | IMX_SSI_USE_I2S_SLAVE,
};
static int screen_type;
static int __init eukrea_mbimxsd51_screen_type(char *options)
{
if (!strcmp(options, "dvi"))
screen_type = 1;
else if (!strcmp(options, "tft"))
screen_type = 0;
return 0;
}
__setup("screen_type=", eukrea_mbimxsd51_screen_type);
/*
* system init for baseboard usage. Will be called by cpuimx51sd init.
*
@ -149,6 +211,18 @@ void __init eukrea_mbimxsd51_baseboard_init(void)
gpio_direction_input(GPIO_SWITCH1);
gpio_free(GPIO_SWITCH1);
gpio_request(GPIO_LCDRST, "LCDRST");
gpio_direction_output(GPIO_LCDRST, 0);
gpio_request(GPIO_LCDBL, "LCDBL");
gpio_direction_output(GPIO_LCDBL, 0);
if (!screen_type) {
platform_device_register(&eukrea_mbimxsd51_bl_dev);
platform_device_register(&eukrea_mbimxsd51_lcd_powerdev);
} else {
gpio_free(GPIO_LCDRST);
gpio_free(GPIO_LCDBL);
}
i2c_register_board_info(0, eukrea_mbimxsd_i2c_devices,
ARRAY_SIZE(eukrea_mbimxsd_i2c_devices));