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/* linux/drivers/video/backlight/s6e63m0_mipi_lcd.c
*
*
* Copyright (c) 2011 Samsung Electronics
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/mutex.h>
#include <linux/wait.h>
#include <linux/ctype.h>
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/gpio.h>
#include <linux/workqueue.h>
#include <linux/backlight.h>
#include <linux/lcd.h>
#include <video/mipi_display.h>
#include <plat/gpio-cfg.h>
#include <plat/regs-dsim.h>
#include <plat/dsim.h>
#include <plat/mipi_dsi.h>
void init_lcd(struct mipi_dsim_device *dsim)
{
unsigned char buf1[4] = {0xf2, 0x02, 0x03, 0x1b};
unsigned char buf2[15] = {0xf8, 0x01, 0x27, 0x27, 0x07, 0x07, 0x54,
0x9f, 0x63, 0x86, 0x1a,
0x33, 0x0d, 0x00, 0x00};
unsigned char buf3[4] = {0xf6, 0x00, 0x8c, 0x07};
/* password */
unsigned char rf[3] = {0x00, 0x5a, 0x5a};
rf[0] = 0xf0;
s5p_mipi_dsi_wr_data(dsim, MIPI_DSI_DCS_LONG_WRITE,
(unsigned int) rf, 3);
rf[0] = 0xf1;
s5p_mipi_dsi_wr_data(dsim, MIPI_DSI_DCS_LONG_WRITE,
(unsigned int) rf, 3);
rf[0] = 0xfc;
s5p_mipi_dsi_wr_data(dsim, MIPI_DSI_DCS_LONG_WRITE,
(unsigned int) rf, 3);
/* HZ (0x16 = 60Hz) */
s5p_mipi_dsi_wr_data(dsim, MIPI_DSI_DCS_SHORT_WRITE_PARAM,
0xfd, 0x14);
s5p_mipi_dsi_wr_data(dsim,
MIPI_DSI_DCS_SHORT_WRITE_PARAM, 0xb0, 0x09);
s5p_mipi_dsi_wr_data(dsim,
MIPI_DSI_DCS_SHORT_WRITE_PARAM, 0xd5, 0x64);
s5p_mipi_dsi_wr_data(dsim,
MIPI_DSI_DCS_SHORT_WRITE_PARAM, 0xb0, 0x09);
/* nonBurstSyncPulse */
if (dsim->pd->dsim_config->e_burst_mode == DSIM_NON_BURST_SYNC_PULSE)
s5p_mipi_dsi_wr_data(dsim,
MIPI_DSI_DCS_SHORT_WRITE_PARAM, 0xd5, 0x84);
else
s5p_mipi_dsi_wr_data(dsim,
MIPI_DSI_DCS_SHORT_WRITE_PARAM, 0xd5, 0xc4);
s5p_mipi_dsi_wr_data(dsim,
MIPI_DSI_DCS_LONG_WRITE, (unsigned int) buf1, sizeof(buf1));
s5p_mipi_dsi_wr_data(dsim,
MIPI_DSI_DCS_LONG_WRITE, (unsigned int) buf2, sizeof(buf2));
s5p_mipi_dsi_wr_data(dsim,
MIPI_DSI_DCS_LONG_WRITE, (unsigned int) buf3, sizeof(buf3));
s5p_mipi_dsi_wr_data(dsim,
MIPI_DSI_DCS_SHORT_WRITE_PARAM, 0xfa, 0x01);
/* Exit sleep */
s5p_mipi_dsi_wr_data(dsim, MIPI_DSI_DCS_SHORT_WRITE,
0x11, 0);
mdelay(600);
/* Set Display ON */
s5p_mipi_dsi_wr_data(dsim, MIPI_DSI_DCS_SHORT_WRITE,
0x29, 0);
}
void s6e63m0_mipi_lcd_off(struct mipi_dsim_device *dsim)
{
/* softreset */
s5p_mipi_dsi_wr_data(dsim, MIPI_DSI_DCS_SHORT_WRITE,
0x1, 0);
/* Enter sleep */
s5p_mipi_dsi_wr_data(dsim, MIPI_DSI_DCS_SHORT_WRITE,
0x10, 0);
mdelay(60);
/* Set Display off */
s5p_mipi_dsi_wr_data(dsim, MIPI_DSI_DCS_SHORT_WRITE,
0x28, 0);
}
static int s6e63m0_mipi_lcd_bl_update_status(struct backlight_device *bd)
{
return 0;
}
static const struct backlight_ops s6e63m0_mipi_lcd_bl_ops = {
.update_status = s6e63m0_mipi_lcd_bl_update_status,
};
static int s6e63m0_mipi_lcd_probe(struct mipi_dsim_device *dsim)
{
struct mipi_dsim_device *dsim_drv;
struct backlight_device *bd = NULL;
struct backlight_properties props;
dsim_drv = kzalloc(sizeof(struct mipi_dsim_device), GFP_KERNEL);
if (!dsim_drv)
return -ENOMEM;
dsim_drv = (struct mipi_dsim_device *) dsim;
props.max_brightness = 1;
props.type = BACKLIGHT_PLATFORM;
bd = backlight_device_register("pwm-backlight",
dsim_drv->dev, dsim_drv, &s6e63m0_mipi_lcd_bl_ops, &props);
return 0;
}
static int s6e63m0_mipi_lcd_suspend(struct mipi_dsim_device *dsim)
{
s6e63m0_mipi_lcd_off(dsim);
return 0;
}
static int s6e63m0_mipi_lcd_displayon(struct mipi_dsim_device *dsim)
{
init_lcd(dsim);
return 0;
}
static int s6e63m0_mipi_lcd_resume(struct mipi_dsim_device *dsim)
{
init_lcd(dsim);
return 0;
}
struct mipi_dsim_lcd_driver s6e63m0_mipi_lcd_driver = {
.probe = s6e63m0_mipi_lcd_probe,
.suspend = s6e63m0_mipi_lcd_suspend,
.displayon = s6e63m0_mipi_lcd_displayon,
.resume = s6e63m0_mipi_lcd_resume,
};
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