/* drivers/video/sprdfb/lcd_hx8379a_mipi.c
 *
 * Support for hx8379a mipi LCD device
 *
 * Copyright (C) 2010 Spreadtrum
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <linux/kernel.h>
#include <linux/bug.h>
#include <linux/delay.h>
#include "../sprdfb_panel.h"
#include <mach/gpio.h>

#define  LCD_DEBUG
#ifdef LCD_DEBUG
#define LCD_PRINT printk
#else
#define LCD_PRINT(...)
#endif

#define MAX_DATA   100

typedef struct LCM_Init_Code_tag {
	unsigned int tag;
	unsigned char data[MAX_DATA];
}LCM_Init_Code;

typedef struct LCM_force_cmd_code_tag{
	unsigned int datatype;
	LCM_Init_Code real_cmd_code;
}LCM_Force_Cmd_Code;

#define LCM_TAG_SHIFT 24
#define LCM_TAG_MASK  ((1 << 24) -1)
#define LCM_SEND(len) ((1 << LCM_TAG_SHIFT)| len)
#define LCM_SLEEP(ms) ((2 << LCM_TAG_SHIFT)| ms)
//#define ARRAY_SIZE(array) ( sizeof(array) / sizeof(array[0]))

#define LCM_TAG_SEND  (1<< 0)
#define LCM_TAG_SLEEP (1 << 1)

static LCM_Init_Code init_data[] = {
// Set EXTC
{LCM_SEND(6), {4, 0, 0xb9,0xff,0x83,0x79}},

// Set MIPI 
{LCM_SEND(5), {3, 0, 0xba,0x51,0x93}},
//Set Power
{LCM_SEND(34), {32, 0, 0xB1,0x00,0x50,0x24,0xF5,0x98,0x08,0x11,0x17,0x77,0x29,0x31,0x9A,
                0x1A,0x12,0x0B,0x76,0xF1,0x00,0xE6,0xE6,0xE6,0xE6,0xE6,0x00,0x04,0x05,
                0x0A,0x0B,0x04,0x05,0x6F}},
// Set Display 
{LCM_SEND(16), {14, 0, 0xB2,0x00,0x00,0xFE,0x0E,0x0A,0x19,0xE2,0x00,0xFF,0x0E,0x0A,0x19,0x20}},
// Set CYC
{LCM_SEND(34), {32, 0, 0xB4,0x80,0x12,0x00,0x32,0x10,0x03,0x54,0x13,0x67,0x32,0x13,0x6B,
                0x39,0x00,0x42,0x05,0x37,0x00,0x41,0x08,0x3C,0x3C,0x08,0x00,0x40,0x08,
                0x28,0x08,0x30,0x30,0x04}},
// Set GIP
{LCM_SEND(50), {48, 0, 0xD5,0x00,0x00,0x0A,0x00,0x01,0x00,0x00,0x06,0x01,0x01,0x01,
                0x23,0x45,0x67,0xAA,0xBB,0x88,0x88,0x67,0x45,0x88,0x88,0x88,0x88,0x88,
                0x54,0x10,0x76,0x54,0x32,0xAA,0xBB,0x88,0x88,0x76,0x10,0x88,0x88,0x88,
                0x88,0x88,0x39,0x01,0x00,0x00,0x00,0x00}},
// Set Gamma 
{LCM_SEND(38), {36, 0, 0xE0,0x79,0x00,0x01,0x0F,0x25,0x26,0x3F,0x33,0x47,0x0A,0x11,0x11,
                0x15,0x17,0x14,0x16,0x11,0x17,0x00,0x01,0x0F,0x25,0x26,0x3F,0x33,0x47,
                0x0A,0x11,0x11,0x15,0x17,0x14,0x16,0x11,0x17}},
// Set Panel 
//{LCM_SEND(2), {0xcc,0x02}}, //no rotation
{LCM_SEND(2), {0xcc,0x0E}},//rotation 180
// Set VCOM
{LCM_SEND(7), {5, 0, 0xB6,0x00,0xAC,0x00,0xAC}},
//set TE
{LCM_SEND(2), {0x35,0x00}},

{LCM_SEND(1), {0x11}},//0x11
{LCM_SLEEP(200)},
{LCM_SEND(1), {0x29}},//0x29
{LCM_SLEEP(100)},
};

static LCM_Force_Cmd_Code rd_prep_code_1[]={
	{0x37, {LCM_SEND(2), {0x1, 0}}},
};

static LCM_Init_Code disp_on =  {LCM_SEND(1), {0x29}};

static LCM_Init_Code sleep_in[] =  {
	{LCM_SEND(1), {0x28}},
	{LCM_SLEEP(150)}, 	//>150ms
	{LCM_SEND(1), {0x10}},
	{LCM_SLEEP(150)},	//>150ms
};

static LCM_Init_Code sleep_out[] =  {
	{LCM_SEND(1), {0x11}},
	{LCM_SLEEP(120)},//>120ms
	{LCM_SEND(1), {0x29}},
	{LCM_SLEEP(20)}, //>20ms
};

static int32_t hx8379a_mipi_init(struct panel_spec *self)
{
	int32_t i = 0;
	LCM_Init_Code *init = init_data;
	unsigned int tag;

	mipi_set_cmd_mode_t mipi_set_cmd_mode = self->info.mipi->ops->mipi_set_cmd_mode;
	mipi_dcs_write_t mipi_dcs_write = self->info.mipi->ops->mipi_dcs_write;
	mipi_eotp_set_t mipi_eotp_set = self->info.mipi->ops->mipi_eotp_set;

	printk("kernel hx8369b_mipi_init\n");

	mipi_set_cmd_mode();
	mipi_eotp_set(0,0);

	for(i = 0; i < ARRAY_SIZE(init_data); i++){
		tag = (init->tag >>24);
		if(tag & LCM_TAG_SEND){
			mipi_dcs_write(init->data, (init->tag & LCM_TAG_MASK));
			udelay(20);
		}else if(tag & LCM_TAG_SLEEP){
			msleep(init->tag & LCM_TAG_MASK);
		}
		init++;
	}
	mipi_eotp_set(0,0);

	return 0;
}

static uint32_t hx8379a_readid(struct panel_spec *self)
{
	uint32_t j =0;
	uint8_t read_data[4] = {0};
	int32_t read_rtn = 0;
	uint8_t param[2] = {0};
	mipi_set_cmd_mode_t mipi_set_cmd_mode = self->info.mipi->ops->mipi_set_cmd_mode;
	mipi_force_write_t mipi_force_write = self->info.mipi->ops->mipi_force_write;
	mipi_force_read_t mipi_force_read = self->info.mipi->ops->mipi_force_read;
	mipi_eotp_set_t mipi_eotp_set = self->info.mipi->ops->mipi_eotp_set;

	LCD_PRINT("lcd_hx8379a_mipi read id!\n");

	mipi_set_cmd_mode();
	mipi_eotp_set(0,0);

	for(j = 0; j < 4; j++){
		param[0] = 0x01;
		param[1] = 0x00;
		mipi_force_write(0x37, param, 2);
		read_rtn = mipi_force_read(0xda,1,&read_data[0]);
		LCD_PRINT("lcd_hx8379a_mipi read id 0xda value is 0x%x!\n",read_data[0]);

		read_rtn = mipi_force_read(0xdb,1,&read_data[1]);
		LCD_PRINT("lcd_hx8379a_mipi read id 0xdb value is 0x%x!\n",read_data[1]);

		read_rtn = mipi_force_read(0xdc,1,&read_data[2]);
		LCD_PRINT("lcd_hx8379a_mipi read id 0xdc value is 0x%x!\n",read_data[2]);

		if((0x83 == read_data[0])&&(0x79 == read_data[1])&&(0x0a == read_data[2])){
				LCD_PRINT("lcd_hx8379a_mipi read id success!\n");
				return 0x8379;
			}
	}

	mipi_eotp_set(0,0);

	return 0;
}

static uint32_t hx8379a_readpowermode(struct panel_spec *self)
{
	int32_t i = 0;
	uint32_t j =0;
	LCM_Force_Cmd_Code * rd_prepare = rd_prep_code_1;
	uint8_t read_data[1] = {0};
	int32_t read_rtn = 0;
	unsigned int tag = 0;

	mipi_force_write_t mipi_force_write = self->info.mipi->ops->mipi_force_write;
	mipi_force_read_t mipi_force_read = self->info.mipi->ops->mipi_force_read;
	mipi_eotp_set_t mipi_eotp_set = self->info.mipi->ops->mipi_eotp_set;

	pr_debug("lcd_nt35516_mipi read power mode!\n");
	mipi_eotp_set(0,1);
	for(j = 0; j < 4; j++){
		rd_prepare = rd_prep_code_1;
		for(i = 0; i < ARRAY_SIZE(rd_prep_code_1); i++){
			tag = (rd_prepare->real_cmd_code.tag >> 24);
			if(tag & LCM_TAG_SEND){
				mipi_force_write(rd_prepare->datatype, rd_prepare->real_cmd_code.data, (rd_prepare->real_cmd_code.tag & LCM_TAG_MASK));
			}else if(tag & LCM_TAG_SLEEP){
				msleep((rd_prepare->real_cmd_code.tag & LCM_TAG_MASK));
			}
			rd_prepare++;
		}
		read_rtn = mipi_force_read(0x0A, 1,(uint8_t *)read_data);
		pr_debug("lcd_hx8379a mipi read power mode 0x0A value is 0x%x! , read result(%d)\n", read_data[0], read_rtn);
		if((0x1c == read_data[0])  && (0 == read_rtn)){
			//printk("lcd_hx8379a_mipi read power mode success!\n");
			mipi_eotp_set(1,1);
			return 0x1c;
		}
	}

	printk("lcd_hx8379a mipi read power mode fail!0x0A value is 0x%x! , read result(%d)\n", read_data[0], read_rtn);
	mipi_eotp_set(1,1);
	return 0x0;
}

static int32_t hx8379a_check_esd(struct panel_spec *self)
{
	uint32_t power_mode;

	mipi_set_lp_mode_t mipi_set_data_lp_mode = self->info.mipi->ops->mipi_set_data_lp_mode;
	mipi_set_hs_mode_t mipi_set_data_hs_mode = self->info.mipi->ops->mipi_set_data_hs_mode;
	mipi_set_lp_mode_t mipi_set_lp_mode = self->info.mipi->ops->mipi_set_lp_mode;
	mipi_set_hs_mode_t mipi_set_hs_mode = self->info.mipi->ops->mipi_set_hs_mode;
	uint16_t work_mode = self->info.mipi->work_mode;

	pr_debug("hx8379a_check_esd!\n");
#ifndef FB_CHECK_ESD_IN_VFP
	if(SPRDFB_MIPI_MODE_CMD==work_mode){
		mipi_set_lp_mode();
	}else{
		mipi_set_data_lp_mode();
	}
#endif
	power_mode = hx8379a_readpowermode(self);
	//power_mode = 0x0;
#ifndef FB_CHECK_ESD_IN_VFP
	if(SPRDFB_MIPI_MODE_CMD==work_mode){
		mipi_set_hs_mode();
	}else{
		mipi_set_data_hs_mode();
	}
#endif
	if(power_mode == 0x1c){
		pr_debug("hx8379a_check_esd OK!\n");
		return 1;
	}else{
		printk("hx8379a_check_esd fail!(0x%x)\n", power_mode);
		return 0;
	}
}

static struct panel_operations lcd_hx8379a_mipi_operations = {
	.panel_init = hx8379a_mipi_init,
	.panel_readid = hx8379a_readid,
	.panel_esd_check = hx8379a_check_esd,
};

static struct timing_rgb lcd_hx8379a_mipi_timing = {
	.hfp = 25,  /* unit: pixel */
	.hbp = 25,
	.hsync = 11,
	.vfp = 22, /*unit: line*/
	.vbp = 12,
	.vsync = 3,
};


static struct info_mipi lcd_hx8379a_mipi_info = {
	.work_mode  = SPRDFB_MIPI_MODE_VIDEO,
	.video_bus_width = 24, /*18,16*/
	.lan_number = 	2,
	.phy_feq =500*1000,
	.h_sync_pol = SPRDFB_POLARITY_POS,
	.v_sync_pol = SPRDFB_POLARITY_POS,
	.de_pol = SPRDFB_POLARITY_POS,
	.te_pol = SPRDFB_POLARITY_POS,
	.color_mode_pol = SPRDFB_POLARITY_NEG,
	.shut_down_pol = SPRDFB_POLARITY_NEG,
	.timing = &lcd_hx8379a_mipi_timing,
	.ops = NULL,
};

struct panel_spec lcd_hx8379a_mipi_spec = {
	.width = 480,
	.height = 854,
	.fps = 62,
	.type = LCD_MODE_DSI,
	.direction = LCD_DIRECT_NORMAL,
	.info = {
		.mipi = &lcd_hx8379a_mipi_info
	},
	.ops = &lcd_hx8379a_mipi_operations,
};
struct panel_cfg lcd_hx8379a_mipi = {
	/* this panel can only be main lcd */
	.dev_id = SPRDFB_MAINLCD_ID,
	.lcd_id = 0x8379,
	.lcd_name = "lcd_hx8379a_mipi",
	.panel = &lcd_hx8379a_mipi_spec,
};

static int __init lcd_hx8379a_mipi_init(void)
{
	return sprdfb_panel_register(&lcd_hx8379a_mipi);
}

subsys_initcall(lcd_hx8379a_mipi_init);