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Commit 26786111 authored by Kuninori Morimoto's avatar Kuninori Morimoto Committed by Rafael J. Wysocki
Browse files

ARM: mach-shmobile: kzm9g: add LCDC support 



AS3711 chip initalization is required for enabling LCDC backlight,
but there is no driver for this chip.
So, this patch sends its settings when boot.

Signed-off-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: default avatarSimon Horman <horms@verge.net.au>
Acked-by: default avatarMagnus Damm <damm@opensource.se>
Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
parent dd818180

arch/arm/mach-shmobile/board-kzm9g.c

+143 −0
Original line number Diff line number Diff line
@@ -16,12 +16,15 @@ 
 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */



#include <linux/delay.h>

#include <linux/gpio.h>

#include <linux/io.h>

#include <linux/irq.h>

#include <linux/platform_device.h>

#include <linux/smsc911x.h>

#include <linux/usb/r8a66597.h>

#include <linux/videodev2.h>

#include <mach/irqs.h>

#include <mach/sh73a0.h>

#include <mach/common.h>
@@ -29,6 +32,7 @@ 
#include <asm/hardware/gic.h>

#include <asm/mach-types.h>

#include <asm/mach/arch.h>

#include <video/sh_mobile_lcdc.h>



/* SMSC 9221 */

static struct resource smsc9221_resources[] = {
@@ -88,11 +92,119 @@ static struct platform_device usb_host_device = { 
	.resource	= usb_resources,

};



/* LCDC */

static struct fb_videomode kzm_lcdc_mode = {

	.name		= "WVGA Panel",

	.xres		= 800,

	.yres		= 480,

	.left_margin	= 220,

	.right_margin	= 110,

	.hsync_len	= 70,

	.upper_margin	= 20,

	.lower_margin	= 5,

	.vsync_len	= 5,

	.sync		= 0,

};



static struct sh_mobile_lcdc_info lcdc_info = {

	.clock_source = LCDC_CLK_BUS,

	.ch[0] = {

		.chan		= LCDC_CHAN_MAINLCD,

		.fourcc		= V4L2_PIX_FMT_RGB565,

		.interface_type	= RGB24,

		.lcd_modes	= &kzm_lcdc_mode,

		.num_modes	= 1,

		.clock_divider	= 5,

		.flags		= 0,

		.panel_cfg = {

			.width	= 152,

			.height	= 91,

		},

	}

};



static struct resource lcdc_resources[] = {

	[0] = {

		.name	= "LCDC",

		.start	= 0xfe940000,

		.end	= 0xfe943fff,

		.flags	= IORESOURCE_MEM,

	},

	[1] = {

		.start	= intcs_evt2irq(0x580),

		.flags	= IORESOURCE_IRQ,

	},

};



static struct platform_device lcdc_device = {

	.name		= "sh_mobile_lcdc_fb",

	.num_resources	= ARRAY_SIZE(lcdc_resources),

	.resource	= lcdc_resources,

	.dev	= {

		.platform_data	= &lcdc_info,

		.coherent_dma_mask = ~0,

	},

};



static struct platform_device *kzm_devices[] __initdata = {

	&smsc_device,

	&usb_host_device,

	&lcdc_device,

};



/*

 * FIXME

 *

 * This is quick hack for enabling LCDC backlight

 */

static int __init as3711_enable_lcdc_backlight(void)

{

	struct i2c_adapter *a = i2c_get_adapter(0);

	struct i2c_msg msg;

	int i, ret;

	__u8 magic[] = {

		0x40, 0x2a,

		0x43, 0x3c,

		0x44, 0x3c,

		0x45, 0x3c,

		0x54, 0x03,

		0x51, 0x00,

		0x51, 0x01,

		0xff, 0x00, /* wait */

		0x43, 0xf0,

		0x44, 0xf0,

		0x45, 0xf0,

	};



	if (!machine_is_kzm9g())

		return 0;



	if (!a)

		return 0;



	msg.addr	= 0x40;

	msg.len		= 2;

	msg.flags	= 0;



	for (i = 0; i < ARRAY_SIZE(magic); i += 2) {

		msg.buf = magic + i;



		if (0xff == msg.buf[0]) {

			udelay(500);

			continue;

		}



		ret = i2c_transfer(a, &msg, 1);

		if (ret < 0) {

			pr_err("i2c transfer fail\n");

			break;

		}

	}



	return 0;

}

device_initcall(as3711_enable_lcdc_backlight);



static void __init kzm_init(void)

{

	sh73a0_pinmux_init();
@@ -110,6 +222,37 @@ static void __init kzm_init(void) 
	gpio_request(GPIO_PORT224, NULL); /* IRQ3 */

	gpio_direction_input(GPIO_PORT224);



	/* LCDC */

	gpio_request(GPIO_FN_LCDD23,	NULL);

	gpio_request(GPIO_FN_LCDD22,	NULL);

	gpio_request(GPIO_FN_LCDD21,	NULL);

	gpio_request(GPIO_FN_LCDD20,	NULL);

	gpio_request(GPIO_FN_LCDD19,	NULL);

	gpio_request(GPIO_FN_LCDD18,	NULL);

	gpio_request(GPIO_FN_LCDD17,	NULL);

	gpio_request(GPIO_FN_LCDD16,	NULL);

	gpio_request(GPIO_FN_LCDD15,	NULL);

	gpio_request(GPIO_FN_LCDD14,	NULL);

	gpio_request(GPIO_FN_LCDD13,	NULL);

	gpio_request(GPIO_FN_LCDD12,	NULL);

	gpio_request(GPIO_FN_LCDD11,	NULL);

	gpio_request(GPIO_FN_LCDD10,	NULL);

	gpio_request(GPIO_FN_LCDD9,	NULL);

	gpio_request(GPIO_FN_LCDD8,	NULL);

	gpio_request(GPIO_FN_LCDD7,	NULL);

	gpio_request(GPIO_FN_LCDD6,	NULL);

	gpio_request(GPIO_FN_LCDD5,	NULL);

	gpio_request(GPIO_FN_LCDD4,	NULL);

	gpio_request(GPIO_FN_LCDD3,	NULL);

	gpio_request(GPIO_FN_LCDD2,	NULL);

	gpio_request(GPIO_FN_LCDD1,	NULL);

	gpio_request(GPIO_FN_LCDD0,	NULL);

	gpio_request(GPIO_FN_LCDDISP,	NULL);

	gpio_request(GPIO_FN_LCDDCK,	NULL);



	gpio_request(GPIO_PORT222,	NULL);

	gpio_direction_output(GPIO_PORT222, 1);



#ifdef CONFIG_CACHE_L2X0

	/* Early BRESP enable, Shared attribute override enable, 64K*8way */

	l2x0_init(IOMEM(0xf0100000), 0x40460000, 0x82000fff);