/*
 * Allwinner SoCs tv driver.
 *
 * Copyright (C) 2016 Allwinner.
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2.  This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */
#include <linux/module.h>
#include <linux/uaccess.h>
#include <asm/memory.h>
#include <asm/unistd.h>
#include "asm-generic/int-ll64.h"
#include "linux/kernel.h"
#include "linux/mm.h"
#include "linux/semaphore.h"
#include <linux/vmalloc.h>
#include <linux/fs.h>
#include <linux/dma-mapping.h>
#include <linux/sched.h>
#include <linux/kthread.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/clk.h>
#include <linux/cdev.h>
#include <linux/types.h>
#include <linux/i2c.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include "../disp/disp_sys_intf.h"
#include <video/sunxi_display2.h>
#include <linux/of_irq.h>
#include <linux/of_address.h>
#include <linux/of_iommu.h>
#include <linux/of_device.h>
#include <linux/of_platform.h>

#include "../disp/de/disp_vdevice.h"
#include "../disp/dev_disp.h"

static char modules_name[32] = "gm7121";
static char key_name[20] = "tv_gm7121_para";

#define GM7121_Config(sub_addr, data) tv_i2c_write(sub_addr, data)
static void gm7121_init(enum disp_tv_mode tv_mode);
static enum disp_tv_mode g_tv_mode = DISP_TV_MOD_PAL;
static u32 tv_i2c_id = 1;
static u32 tv_i2c_used;
static u32 tv_screen_id;
static u32 tv_used;
static u32 tv_power_used;
static char tv_power[16] = {0};

static bool tv_io_used[28];
static struct disp_gpio_set_t tv_io[28];
static struct i2c_adapter *tv_i2c_adapter;
static struct i2c_client *tv_i2c_client;
static struct disp_device *gm7121_device;
static struct disp_vdevice_source_ops tv_source_ops;
static s32 tv_i2c_write(u8 sub_addr, u8 data);
/* static s32 tv_i2c_read(u8 sub_addr, u8 *data); */


static struct disp_video_timings video_timing[] = {
	{
			.vic = 0,
			.tv_mode = DISP_TV_MOD_PAL,
			.pixel_clk = 27000000,
			.pixel_repeat = 0,
			.x_res = 720,
			.y_res = 576,
			.hor_total_time = 864,
			.hor_back_porch = 137,
			.hor_front_porch = 3,
			.hor_sync_time = 2,
			.ver_total_time = 625,
			.ver_back_porch = 20,
			.ver_front_porch = 25,
			.ver_sync_time = 2,
			.hor_sync_polarity = 0,
			.ver_sync_polarity = 0,
			.b_interlace = 1,
			.vactive_space = 0,
			.trd_mode = 0,

		},
		{
			.vic = 0,
			.tv_mode = DISP_TV_MOD_NTSC,
			.pixel_clk = 27000000,
			.pixel_repeat = 0,
			.x_res = 720,
			.y_res = 480,
			.hor_total_time = 858,
			.hor_back_porch = 57,
			.hor_front_porch = 19,
			.hor_sync_time = 62,
			.ver_total_time = 525,
			.ver_back_porch = 15,
			.ver_front_porch = 4,
			.ver_sync_time = 3,
			.hor_sync_polarity = 0,
			.ver_sync_polarity = 0,
			.b_interlace = 1,
			.vactive_space = 0,
			.trd_mode = 0,
		},
};

static int tv_parse_config(void)
{
	struct disp_gpio_set_t  *gpio_info;
	int i, ret;
	char io_name[32];

	for (i = 0; i < 28; i++) {
		gpio_info = &(tv_io[i]);
		sprintf(io_name, "tv_d%d", i);
		ret = disp_sys_script_get_item(key_name, io_name,
						(int *)gpio_info,
				sizeof(struct disp_gpio_set_t)/sizeof(int));
		if (ret == 3)
			tv_io_used[i] = 1;
	}

	return 0;
}

static int tv_pin_config(u32 bon)
{
	int hdl, i;

	for (i = 0; i < 28; i++) {
		if (tv_io_used[i]) {
			struct disp_gpio_set_t  gpio_info[1];

			memcpy(gpio_info, &(tv_io[i]),
					sizeof(struct disp_gpio_set_t));
			if (!bon)
				gpio_info->mul_sel = 7;
			hdl = disp_sys_gpio_request(gpio_info, 1);
			disp_sys_gpio_release(hdl, 2);
		}
	}
	return 0;
}

static s32 gm7121_tv_power_on(u32 on_off)
{
	if (tv_power_used == 0)
		return 0;
	if (on_off)
		disp_sys_power_enable(tv_power);
	else
		disp_sys_power_disable(tv_power);
	return 0;
}

static s32 gm7121_tv_open(void)
{
	gm7121_tv_power_on(1);
	tv_pin_config(1);
	msleep(400);
	if (tv_source_ops.tcon_enable)
		tv_source_ops.tcon_enable(gm7121_device);
	msleep(100);
	gm7121_init(g_tv_mode);

	return 0;
}

static s32 gm7121_tv_close(void)
{
	if (tv_source_ops.tcon_disable)
		tv_source_ops.tcon_disable(gm7121_device);
	msleep(100);
	tv_pin_config(0);
	gm7121_tv_power_on(0);
	msleep(500);
	return 0;
}

#if 0
static s32 gm7121_tv_get_mode(void)
{
	return g_tv_mode;
}
#endif

static s32 gm7121_tv_set_mode(enum disp_tv_mode tv_mode)
{
	g_tv_mode = tv_mode;

	return 0;
}

static s32 gm7121_tv_get_hpd_status(void)
{
	return 0;
}

static s32 gm7121_tv_get_mode_support(enum disp_tv_mode tv_mode)
{
	if (tv_mode == DISP_TV_MOD_PAL || tv_mode == DISP_TV_MOD_NTSC)
		return 1;

	return 0;
}

static
s32 gm7121_tv_get_video_timing_info(struct disp_video_timings **video_info)
{
	struct disp_video_timings *info;
	int ret = -1;
	int i, list_num;

	info = video_timing;

	list_num = sizeof(video_timing)/sizeof(struct disp_video_timings);
	for (i = 0; i < list_num; i++) {
		if (info->tv_mode == g_tv_mode) {
			*video_info = info;
			ret = 0;
			break;
		}

		info++;
	}
	return ret;
}

static s32 gm7121_tv_get_interface_para(void *para)
{
	struct disp_vdevice_interface_para intf_para;

	intf_para.intf = 0;
	intf_para.sub_intf = 12;
	intf_para.sequence = 2;
	intf_para.clk_phase = 2;
	intf_para.sync_polarity = 0;
	if (g_tv_mode == DISP_TV_MOD_NTSC)
		intf_para.fdelay = 2;/* ntsc */
	else
		intf_para.fdelay = 1;/* pal */

	if (para)
		memcpy(para, &intf_para,
				sizeof(struct disp_vdevice_interface_para));

	return 0;
}

/* 0:rgb;  1:yuv */
static s32 gm7121_tv_get_input_csc(void)
{
	return 0;
}

static void gm7121_init(enum disp_tv_mode tv_mode)
{
	if (tv_mode == DISP_TV_MOD_PAL)
		return;
	/* disp_tv_mode tv_mode = DISP_TV_MOD_PAL;
	 * //DISP_TV_MOD_PAL;//DISP_TV_MOD_NTSC;
	 */
	/* -------------------SAA7121 START------------------------------- */
	pr_warn("[TV]gm7121_init, tv_Mode=%d\n", tv_mode);
	GM7121_Config(0x28, 0x21);
	GM7121_Config(0x29, 0x1D);
	GM7121_Config(0x2A, 0x00);
	GM7121_Config(0x2B, 0x00);
	GM7121_Config(0x2C, 0x00);
	GM7121_Config(0x2D, 0x00);
	GM7121_Config(0x2E, 0x00);
	GM7121_Config(0x2F, 0x00);
	GM7121_Config(0x30, 0x00);
	GM7121_Config(0x31, 0x00);
	GM7121_Config(0x32, 0x00);
	GM7121_Config(0x33, 0x00);
	GM7121_Config(0x34, 0x00);
	GM7121_Config(0x35, 0x00);
	GM7121_Config(0x36, 0x00);
	GM7121_Config(0x37, 0x00);
	GM7121_Config(0x38, 0x00);
	GM7121_Config(0x39, 0x00);

	/* GM7121_Config(0x3A,0x93);    //color  strape */
	GM7121_Config(0x3A, 0x13);

	GM7121_Config(0x5A, 0x00);
	GM7121_Config(0x5B, 0x6d);
	GM7121_Config(0x5C, 0x9f);
	/* GM7121_Config(0x5D,0x1e); */
	GM7121_Config(0x5E, 0x1c);
	GM7121_Config(0x5F, 0x35);
	GM7121_Config(0x60, 0x00);

	if (tv_mode == DISP_TV_MOD_NTSC) {
		GM7121_Config(0x5D, 0x1e);
		GM7121_Config(0x61, 0x01);
		GM7121_Config(0x63, 0x1f);
		GM7121_Config(0x64, 0x7c);
		GM7121_Config(0x65, 0xF0);
		GM7121_Config(0x66, 0x21);
	} else {
		GM7121_Config(0x5D, 0x0e);
		GM7121_Config(0x61, 0x06);
		GM7121_Config(0x63, 0xCB);
		GM7121_Config(0x64, 0x8A);
		GM7121_Config(0x65, 0x09);
		GM7121_Config(0x66, 0x2A);
	}

	GM7121_Config(0x62, 0x3B);
#if 0
	GM7121_Config(0x67, 0x00);
	GM7121_Config(0x68, 0x00);
	GM7121_Config(0x69, 0x00);
	GM7121_Config(0x6A, 0x00);
#endif
	GM7121_Config(0x6B, 0x12);

	GM7121_Config(0x6C, 0x01);

	GM7121_Config(0x6D, 0x20);

	GM7121_Config(0x6E, 0x80);
	GM7121_Config(0x6F, 0x00);
	GM7121_Config(0x70, 0x14);
	GM7121_Config(0x71, 0x00);
	GM7121_Config(0x72, 0x00);
	GM7121_Config(0x73, 0x00);
	GM7121_Config(0x74, 0x00);
	GM7121_Config(0x75, 0x00);
	GM7121_Config(0x76, 0x00);
	GM7121_Config(0x77, 0x00);
	GM7121_Config(0x78, 0x00);
	GM7121_Config(0x79, 0x00);
	GM7121_Config(0x7A, 0x16);
	GM7121_Config(0x7B, 0x36);
	GM7121_Config(0x7C, 0x40);
	GM7121_Config(0x7D, 0x00);
	GM7121_Config(0x7E, 0x00);
	GM7121_Config(0x7F, 0x00);
}

static int tv_i2c_probe(struct i2c_client *client,
		const struct i2c_device_id *id)
{
	struct disp_vdevice_init_data init_data;

	pr_info("[DISP_I2C] tv_i2c_probe\n");
	memset(&init_data, 0, sizeof(struct disp_vdevice_init_data));
	tv_i2c_client = client;

	init_data.disp = tv_screen_id;
	memcpy(init_data.name, modules_name, 32);
	init_data.type = DISP_OUTPUT_TYPE_TV;
	init_data.fix_timing = 0;

	init_data.func.enable = gm7121_tv_open;
	init_data.func.disable = gm7121_tv_close;
	init_data.func.get_HPD_status = gm7121_tv_get_hpd_status;
	init_data.func.set_mode = gm7121_tv_set_mode;
	init_data.func.mode_support = gm7121_tv_get_mode_support;
	init_data.func.get_video_timing_info = gm7121_tv_get_video_timing_info;
	init_data.func.get_interface_para = gm7121_tv_get_interface_para;
	init_data.func.get_input_csc = gm7121_tv_get_input_csc;
	disp_vdevice_get_source_ops(&tv_source_ops);
	tv_parse_config();

	gm7121_device = disp_vdevice_register(&init_data);

	return 0;
}

static int __exit tv_i2c_remove(struct i2c_client *client)
{
	if (gm7121_device)
		disp_vdevice_unregister(gm7121_device);
	gm7121_device = NULL;
	return 0;
}

static const struct i2c_device_id tv_i2c_id_table[] = {
	{ "tv_i2c", 0 },
	{}
};
MODULE_DEVICE_TABLE(i2c, tv_i2c_id_table);

static int tv_i2c_detect(struct i2c_client *client, struct i2c_board_info *info)
{
	if (tv_i2c_id == client->adapter->nr) {
		const char *type_name = "tv_i2c";

		tv_i2c_adapter = client->adapter;
		pr_info("[DISP_I2C] tv_i2c_detect, get right i2c adapter, id=%d\n",
			tv_i2c_adapter->nr);
		strlcpy(info->type, type_name, I2C_NAME_SIZE);
		return 0;
	}
	return -ENODEV;
}

static  unsigned short normal_i2c[] = {0x46, I2C_CLIENT_END};

static const struct of_device_id sunxi_tv_gm7121_match[] = {
	{ .compatible = "allwinner,sunxi_tv_gm7121", },
	{},
};

static struct i2c_driver tv_i2c_driver = {
	.class = I2C_CLASS_HWMON,
	.probe        = tv_i2c_probe,
	.remove        = __exit_p(tv_i2c_remove),
	.id_table    = tv_i2c_id_table,
	.driver    = {
	.name    = "tv_i2c",
	.owner    = THIS_MODULE,
	.of_match_table = sunxi_tv_gm7121_match,
	},
	.detect        = tv_i2c_detect,
	.address_list    = normal_i2c,
};

static int  tv_i2c_init(void)
{
	int ret;
	int value;

	ret = disp_sys_script_get_item(key_name, "tv_twi_used", &value, 1);
	if (ret == 1) {
		tv_i2c_used = value;
		if (tv_i2c_used == 1) {
			ret = disp_sys_script_get_item(key_name, "tv_twi_id",
						&value, 1);
			tv_i2c_id = (ret == 1) ? value:tv_i2c_id;

			ret = disp_sys_script_get_item(key_name, "tv_twi_addr",
						&value, 1);
			normal_i2c[0] = (ret == 1) ? value:normal_i2c[0];

			return i2c_add_driver(&tv_i2c_driver);
		}
	}
	return 0;
}

static void tv_i2c_exit(void)
{
	i2c_del_driver(&tv_i2c_driver);
}

static s32 tv_i2c_write(u8 sub_addr, u8 data)
{
	s32 ret = 0;
	u8 i2c_data[2];
	struct i2c_msg msg;

	if (tv_i2c_used) {
		i2c_data[0] = sub_addr;
		i2c_data[1] = data;
		msg.addr = tv_i2c_client->addr;
		msg.flags = 0;
		msg.len = 2;
		msg.buf = i2c_data;
		ret = i2c_transfer(tv_i2c_adapter, &msg, 1);
	}

	return ret;
}

#if 0
static s32 tv_i2c_read(u8 sub_addr, u8 *data)
{
	s32 ret = 0;
	struct i2c_msg msgs[] = {
		{
			.addr	= tv_i2c_client->addr,
			.flags	= 0,
			.len	= 1,
			.buf	= &sub_addr,
		},
		{
		.addr	= tv_i2c_client->addr,
		.flags	= I2C_M_RD,
		.len	= 1,
		.buf	= data,
		},
	};

	if (tv_i2c_used)
		ret = i2c_transfer(tv_i2c_adapter, msgs, 2);

	return ret;
}
#endif

static int __init gm7121_module_init(void)
{
	int ret;
	int value;

	pr_info("[TV]gm7121_module_init begin\n");

	ret = disp_sys_script_get_item(key_name, "tv_used", &value, 1);
	if (ret == 1) {
		tv_used = value;
		if (tv_used) {
			unsigned int value, output_type0, output_mode0;
			unsigned int output_type1, output_mode1;

			ret = disp_sys_script_get_item(key_name, "tv_power",
					(int *)tv_power, 32/sizeof(int));
			if (ret == 2) {
				tv_power_used = 1;
				pr_info("[TV] tv_power: %s\n", tv_power);
			}
			tv_i2c_init();
			value = disp_boot_para_parse("boot_disp");
			output_type0 = (value >> 8) & 0xff;
			output_mode0 = (value) & 0xff;
			output_type1 = (value >> 24) & 0xff;
			output_mode1 = (value >> 16) & 0xff;
			if ((output_type0 == DISP_OUTPUT_TYPE_TV) ||
				(output_type1 == DISP_OUTPUT_TYPE_TV)) {
				pr_info("[TV]%s:smooth boot", __func__);
				gm7121_tv_power_on(1);
				if (output_type0 == DISP_OUTPUT_TYPE_TV)
					g_tv_mode = output_mode0;
				else if (output_type1 == DISP_OUTPUT_TYPE_TV)
					g_tv_mode = output_mode1;
			}
		}
	} else
		tv_used = 0;

	return 0;
}

static void __exit gm7121_module_exit(void)
{
	pr_info("gm7121_module_exit\n");
	tv_i2c_exit();
}

late_initcall(gm7121_module_init);
module_exit(gm7121_module_exit);

MODULE_AUTHOR("tyle");
MODULE_DESCRIPTION("gm7121 driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:gm7121");