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Commit 13d1dd83 authored by Denis Carikli's avatar Denis Carikli Committed by Sascha Hauer
Browse files

ARM: imx: eukrea_mbimxsd: add backlight and lcd support 



Signed-off-by: default avatarEric Bénard <eric@eukrea.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
parent 7138a7f9

arch/arm/mach-imx/eukrea_mbimxsd-baseboard.c

+74 −0
Original line number Diff line number Diff line
@@ -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));