path: root/drivers/video/exynos/s6e8ax0.c

/* linux/drivers/video/exynos/s6e8ax0.c
 *
 * MIPI-DSI based s6e8ax0 AMOLED lcd 4.65 inch panel driver.
 *
 * Inki Dae, <inki.dae@samsung.com>
 * Donghwa Lee, <dh09.lee@samsung.com>
 *
 * 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/lcd.h>
#include <linux/fb.h>
#include <linux/backlight.h>
#include <linux/regulator/consumer.h>

#include <video/mipi_display.h>
#include <video/exynos_mipi_dsim.h>

#define LDI_MTP_LENGTH		24
#define DSIM_PM_STABLE_TIME	10
#define MIN_BRIGHTNESS		0
#define MAX_BRIGHTNESS		24
#define GAMMA_TABLE_COUNT	26

#define POWER_IS_ON(pwr)	((pwr) == FB_BLANK_UNBLANK)
#define POWER_IS_OFF(pwr)	((pwr) == FB_BLANK_POWERDOWN)
#define POWER_IS_NRM(pwr)	((pwr) == FB_BLANK_NORMAL)

#define lcd_to_master(a)	(a->dsim_dev->master)
#define lcd_to_master_ops(a)	((lcd_to_master(a))->master_ops)

enum {
	DSIM_NONE_STATE = 0,
	DSIM_RESUME_COMPLETE = 1,
	DSIM_FRAME_DONE = 2,
};

struct s6e8ax0 {
	struct device	*dev;
	unsigned int			power;
	unsigned int			id;
	unsigned int			gamma;
	unsigned int			acl_enable;
	unsigned int			cur_acl;

	struct lcd_device	*ld;
	struct backlight_device	*bd;

	struct mipi_dsim_lcd_device	*dsim_dev;
	struct lcd_platform_data	*ddi_pd;
	struct mutex			lock;
	bool  enabled;
};


static struct regulator_bulk_data supplies[] = {
	{ .supply = "vdd3", },
	{ .supply = "vci", },
};

static void s6e8ax0_regulator_enable(struct s6e8ax0 *lcd)
{
	int ret = 0;
	struct lcd_platform_data *pd = NULL;

	pd = lcd->ddi_pd;
	mutex_lock(&lcd->lock);
	if (!lcd->enabled) {
		ret = regulator_bulk_enable(ARRAY_SIZE(supplies), supplies);
		if (ret)
			goto out;

		lcd->enabled = true;
	}
	msleep(pd->power_on_delay);
out:
	mutex_unlock(&lcd->lock);
}

static void s6e8ax0_regulator_disable(struct s6e8ax0 *lcd)
{
	int ret = 0;

	mutex_lock(&lcd->lock);
	if (lcd->enabled) {
		ret = regulator_bulk_disable(ARRAY_SIZE(supplies), supplies);
		if (ret)
			goto out;

		lcd->enabled = false;
	}
out:
	mutex_unlock(&lcd->lock);
}

static const unsigned char s6e8ax0_22_gamma_30[] = {
	0xfa, 0x01, 0x60, 0x10, 0x60, 0xf5, 0x00, 0xff, 0xad, 0xaf,
	0xbA, 0xc3, 0xd8, 0xc5, 0x9f, 0xc6, 0x9e, 0xc1, 0xdc, 0xc0,
	0x00, 0x61, 0x00, 0x5a, 0x00, 0x74,
};

static const unsigned char s6e8ax0_22_gamma_50[] = {
	0xfa, 0x01, 0x60, 0x10, 0x60, 0xe8, 0x1f, 0xf7, 0xad, 0xc0,
	0xb5, 0xc4, 0xdc, 0xc4, 0x9e, 0xc6, 0x9c, 0xbb, 0xd8, 0xbb,
	0x00, 0x70, 0x00, 0x68, 0x00, 0x86,
};

static const unsigned char s6e8ax0_22_gamma_60[] = {
	0xfa, 0x01, 0x60, 0x10, 0x60, 0xde, 0x1f, 0xef, 0xad, 0xc4,
	0xb3, 0xc3, 0xdd, 0xc4, 0x9e, 0xc6, 0x9c, 0xbc, 0xd6, 0xba,
	0x00, 0x75, 0x00, 0x6e, 0x00, 0x8d,
};

static const unsigned char s6e8ax0_22_gamma_70[] = {
	0xfa, 0x01, 0x60, 0x10, 0x60, 0xd8, 0x1f, 0xe7, 0xaf, 0xc8,
	0xb4, 0xc4, 0xdd, 0xc3, 0x9d, 0xc6, 0x9c, 0xbb, 0xd6, 0xb9,
	0x00, 0x7a, 0x00, 0x72, 0x00, 0x93,
};

static const unsigned char s6e8ax0_22_gamma_80[] = {
	0xfa, 0x01, 0x60, 0x10, 0x60, 0xc9, 0x1f, 0xde, 0xae, 0xc9,
	0xb1, 0xc3, 0xdd, 0xc2, 0x9d, 0xc5, 0x9b, 0xbc, 0xd6, 0xbb,
	0x00, 0x7f, 0x00, 0x77, 0x00, 0x99,
};

static const unsigned char s6e8ax0_22_gamma_90[] = {
	0xfa, 0x01, 0x60, 0x10, 0x60, 0xc7, 0x1f, 0xd9, 0xb0, 0xcc,
	0xb2, 0xc3, 0xdc, 0xc1, 0x9c, 0xc6, 0x9c, 0xbc, 0xd4, 0xb9,
	0x00, 0x83,