/*
 * (C) Copyright 2012
 * Amlogic. Inc. zongdong.jiao@amlogic.com
 *
 * This file is used to prefetch/varify/compare HDCP keys
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <command.h>
#include <environment.h>
#include <malloc.h>
#include <asm/byteorder.h>
#include <amlogic/hdmi.h>
#ifdef CONFIG_AML_LCD
#include <amlogic/aml_lcd.h>
#endif
#include <amlogic/edid-decode.h>

static int do_hpd_detect(cmd_tbl_t *cmdtp, int flag, int argc,
	char *const argv[])
{
#ifdef CONFIG_AML_LCD
	struct aml_lcd_drv_s *lcd_drv = NULL;
	char *mode;
#endif
	int st;

#ifdef CONFIG_AML_LCD
	lcd_drv = aml_lcd_get_driver();
	if (lcd_drv) {
		if (lcd_drv->lcd_outputmode_check) {
			mode = getenv("outputmode");
			if (lcd_drv->lcd_outputmode_check(mode) == 0)
				return 0;
		}
	}
#endif

	st = hdmitx_device.HWOp.get_hpd_state();
	printf("hpd_state=%c\n", st ? '1' : '0');

	if (st) {
		setenv("outputmode", getenv("hdmimode"));
	} else {
		setenv("outputmode", getenv("cvbsmode"));
	}
	return st;
}

static unsigned char edid_raw_buf[512] = {0};
static void dump_edid_raw_8bytes(unsigned char *buf)
{
	int i = 0;
	for (i = 0; i < 8; i++)
		printf("%02x ", buf[i]);
	printf("\n");
}

static void dump_full_edid(const unsigned char *buf)
{
	int i;
	int blk_no = buf[126] + 1;

	if (blk_no > 4)
		blk_no = 4;
	printf("Dump EDID Rawdata\n");
	for (i = 0; i < blk_no * EDID_BLK_SIZE; i++) {
		printk("%02x", buf[i]);
		if (((i+1) & 0x1f) == 0)    /* print 32bytes a line */
			printk("\n");
	}
}

/* 500ms for each retry, total 7 retry */
#define EDID_RETRY_WAITTIME	500
static int do_edid(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
	unsigned int blk_len = 0;
	unsigned char count = 0;

	memset(edid_raw_buf, 0, ARRAY_SIZE(edid_raw_buf));
	if (argc < 1)
		return cmd_usage(cmdtp);

	if (!hdmitx_device.HWOp.get_hpd_state()) {
		printf("HDMI cable is NOT connected\n");
		return CMD_RET_FAILURE;
	}

READ_EDID:
	/* read edid raw data */
	blk_len = hdmitx_device.HWOp.read_edid_raw(edid_raw_buf);

	if (!blk_len)
		printf("edid read failed\n");
	else {
#ifdef DEBUG_DUMPEDID
		/* dump all raw data */
		dump_full_edid(edid_raw_buf);
#endif
		/* parsing edid data */
		if (-EDID_ERR_RETRY == parse_edid(edid_raw_buf, blk_len, count)) {
			printf("hdmitx: read edid fails.. retry..\n");
			mdelay(EDID_RETRY_WAITTIME);
			count++;
			goto READ_EDID;
		}

		/* select best resolution */
		setenv("hdmimode", select_best_resolution());
		if (strncmp((const char *)select_best_resolution(), "2160p", 5) == 0)
			setenv("4k", "yes");
		else
			setenv("4k", "no");
		setenv("vout", getenv("hdmimode"));
	}

	return CMD_RET_SUCCESS;
}

static int do_rx_det(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
	unsigned char edid_addr = 0xf8;     // Fixed Address
	unsigned char st = 0;

	memset(edid_raw_buf, 0, ARRAY_SIZE(edid_raw_buf));

	// read edid raw data
	// current only support read 1 byte edid data
	st = hdmitx_device.HWOp.read_edid(&edid_raw_buf[edid_addr & 0xf8], edid_addr & 0xf8, 8);
	if (1)      // Debug only
		dump_edid_raw_8bytes(&edid_raw_buf[edid_addr & 0xf8]);
	if (st) {
#if 0
		// set fake value for debug
		edid_raw_buf[250] = 0xfb;
		edid_raw_buf[251] = 0x0c;
		edid_raw_buf[252] = 0x01;
#endif
		if ((edid_raw_buf[250] == 0xfb) & (edid_raw_buf[251] == 0x0c)) {
			printf("RX is FBC\n");

			// set outputmode ENV
			switch (edid_raw_buf[252] & 0x0f) {
			case 0x0:
				run_command("setenv outputmode 1080p50hz", 0);
				break;
			case 0x1:
				run_command("setenv outputmode 2160p50hz420", 0);
				break;
			case 0x2:
				run_command("setenv outputmode 1080p50hz44410bit", 0);
				break;
			case 0x3:
				run_command("setenv outputmode 2160p50hz42010bit", 0);
				break;
			case 0x4:
				run_command("setenv outputmode 2160p50hz42210bit", 0);
				break;
			case 0x5:
				run_command("setenv outputmode 2160p50hz", 0);
				break;
			default:
				run_command("setenv outputmode 1080p50hz", 0);
				break;
			}

			// set RX 3D Info
			switch ((edid_raw_buf[252] >> 4) & 0x0f) {
			case 0x00:
				run_command("setenv rx_3d_info 0", 0);
				break;
			case 0x01:
				run_command("setenv rx_3d_info 1", 0);
				break;
			case 0x02:
				run_command("setenv rx_3d_info 2", 0);
				break;
			case 0x03:
				run_command("setenv rx_3d_info 3", 0);
				break;
			case 0x04:
				run_command("setenv rx_3d_info 4", 0);
				break;
			default:
				break;
			}

			switch (edid_raw_buf[253]) {
			case 0x1:
				// TODO
				break;
			case 0x2:
				// TODO
				break;
			default:
				break;
			}
		}
	} else
		printf("edid read failed\n");

	return st;
}

static int do_output(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
	if (argc < 1)
		return cmd_usage(cmdtp);

	if (strcmp(argv[1], "list") == 0)
		hdmitx_device.HWOp.list_support_modes();
	else if (strcmp(argv[1], "bist") == 0) {
		unsigned int mode = 0;
		if (strcmp(argv[2], "off") == 0)
			mode = 0;
		else if (strcmp(argv[2], "line") == 0)
			mode = 2;
		else if (strcmp(argv[2], "dot") == 0)
			mode = 3;
		else
			mode = simple_strtoul(argv[2], NULL, 10);
		hdmitx_device.HWOp.test_bist(mode);
	} else if (strcmp(argv[1], "prbs") == 0) {
		hdmitx_device.para->cs = HDMI_COLOR_FORMAT_RGB;
		hdmitx_device.para->cd = HDMI_COLOR_DEPTH_24B;
		hdmitx_device.vic = HDMI_1920x1080p60_16x9;
		hdmi_tx_set(&hdmitx_device);
		hdmitx_device.HWOp.test_bist(10);
	} else { /* "output" */
		hdmitx_device.vic = hdmi_get_fmt_vic(argv[1]);
		hdmitx_device.para = hdmi_get_fmt_paras(hdmitx_device.vic);
		if (hdmitx_device.vic == HDMI_unkown) {
			/* Not find VIC */
			printf("Not find '%s' mapped VIC\n", argv[1]);
			return CMD_RET_FAILURE;
		} else
			printf("set hdmitx VIC = %d\n", hdmitx_device.vic);
		if (strstr(argv[1], "hz420") != NULL)
			hdmitx_device.para->cs = HDMI_COLOR_FORMAT_420;
		if (getenv("colorattribute"))
			hdmi_parse_attr(hdmitx_device.para, getenv("colorattribute"));
		/* For RGB444 or YCbCr444 under 6Gbps mode, no deepcolor */
		/* Only 4k50/60 has 420 modes */
		switch (hdmitx_device.vic) {
		case HDMI_3840x2160p50_16x9:
		case HDMI_3840x2160p60_16x9:
		case HDMI_4096x2160p50_256x135:
		case HDMI_4096x2160p60_256x135:
		case HDMI_3840x2160p50_64x27:
		case HDMI_3840x2160p60_64x27:
		case HDMI_3840x2160p50_16x9_Y420:
		case HDMI_3840x2160p60_16x9_Y420:
		case HDMI_4096x2160p50_256x135_Y420:
		case HDMI_4096x2160p60_256x135_Y420:
		case HDMI_3840x2160p50_64x27_Y420:
		case HDMI_3840x2160p60_64x27_Y420:
			if ((hdmitx_device.para->cs == HDMI_COLOR_FORMAT_RGB) ||
			    (hdmitx_device.para->cs == HDMI_COLOR_FORMAT_444)) {
				if (hdmitx_device.para->cd != HDMI_COLOR_DEPTH_24B) {
					printf("vic %d cs %d has no cd %d\n",
						hdmitx_device.vic,
						hdmitx_device.para->cs,
						hdmitx_device.para->cd);
					hdmitx_device.para->cd = HDMI_COLOR_DEPTH_24B;
					printf("set cd as %d\n", HDMI_COLOR_DEPTH_24B);
				}
			}
			if (hdmitx_device.para->cs == HDMI_COLOR_FORMAT_420)
				hdmitx_device.vic |= HDMITX_VIC420_OFFSET;
			break;
		default:
			if (hdmitx_device.para->cs == HDMI_COLOR_FORMAT_420) {
				printf("vic %d has no cs %d\n", hdmitx_device.vic,
					hdmitx_device.para->cs);
				hdmitx_device.para->cs = HDMI_COLOR_FORMAT_444;
				printf("set cs as %d\n", HDMI_COLOR_FORMAT_444);
			}
			break;
		/* For VESA modes, should be RGB format */
		if (hdmitx_device.vic >= HDMITX_VESA_OFFSET)
			hdmitx_device.para->cs = HDMI_COLOR_FORMAT_RGB;
		}
		hdmi_tx_set(&hdmitx_device);
	}
	return CMD_RET_SUCCESS;
}

static int do_blank(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
	if (argc < 1)
		return cmd_usage(cmdtp);

	if (strcmp(argv[1], "1") == 0)
		hdmitx_device.HWOp.output_blank(1);
	if (strcmp(argv[1], "0") == 0)
		hdmitx_device.HWOp.output_blank(0);

	return CMD_RET_SUCCESS;
}

static int do_off(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
	hdmitx_device.vic = HDMI_unkown;
	hdmitx_device.HWOp.turn_off();
	printf("turn off hdmitx\n");
	return 1;
}

static int do_dump(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
	hdmitx_device.HWOp.dump_regs();
	return 1;
}

static int do_mode(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
	if (strstr(argv[1], "dvi") != NULL)
		hdmitx_device.dvimode = 1;
	else
		hdmitx_device.dvimode = 0;

	return 1;
}

static int do_info(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
	struct hdmitx_dev *hdev = &hdmitx_device;
	struct hdmi_format_para *para = hdev->para;

	printf("%s %d\n", para->ext_name, hdev->vic);
	printf("cd%d cs%d cr%d\n", para->cd, para->cs, para->cr);
	printf("frac_rate: %d\n", hdev->frac_rate_policy);
	return 1;
}

static int do_get_preferred_mode(cmd_tbl_t * cmdtp, int flag, int argc,
	char * const argv[])
{
	struct hdmitx_dev *hdev = &hdmitx_device;
	unsigned int byte_num = 0;
	unsigned char *edid = hdev->rawedid;
	unsigned char blk_no = 1;
	struct hdmi_format_para *para;
	char pref_mode[64];
	char color_attr[64];

	memset(edid, 0, EDID_BLK_SIZE * EDID_BLK_NO);
	memset(pref_mode, 0, sizeof(pref_mode));
	memset(color_attr, 0, sizeof(color_attr));

	/* Read complete EDID data sequentially */
	while (byte_num < 128 * blk_no) {
		hdmitx_device.HWOp.read_edid(&edid[byte_num], byte_num & 0x7f, byte_num / 128);
		if (byte_num == 120) {
			blk_no = edid[126] + 1;
			if (blk_no > 4)
				blk_no = 4; /* MAX Read Blocks 4 */
		}
		byte_num += 8;
	}

	if (hdmi_edid_parsing(hdev->rawedid, &hdev->RXCap) == 0) {
		dump_full_edid(hdev->rawedid);
	}
	para = hdmi_get_fmt_paras(hdev->RXCap.preferred_mode);
	if (para) {
		sprintf(pref_mode, "setenv hdmimode %s", para->sname);
		if (hdev->RXCap.pref_colorspace & (1 << 5))
			sprintf(color_attr, "setenv colorattribute %s", "444,8bit");
		else if (hdev->RXCap.pref_colorspace & (1 << 4))
			sprintf(color_attr, "setenv colorattribute %s", "422,8bit");
		else
			sprintf(color_attr, "setenv colorattribute %s", "rgb,8bit");
	} else { /* set default mode */
		hdev->RXCap.preferred_mode = HDMI_720x480p60_16x9;
		para = hdmi_get_fmt_paras(HDMI_720x480p60_16x9);
		sprintf(pref_mode, "setenv hdmimode %s", para->sname);
		sprintf(color_attr, "setenv colorattribute %s", "444,8bit");
	}
	printk("edid preferred_mode is %s[%d]\n", para->sname, hdev->RXCap.preferred_mode);

	/* save to ENV */
	run_command(pref_mode, 0);
	run_command(color_attr, 0);
	run_command("saveenv", 0);

	return 0;
}

static cmd_tbl_t cmd_hdmi_sub[] = {
	U_BOOT_CMD_MKENT(hpd, 1, 1, do_hpd_detect, "", ""),
	U_BOOT_CMD_MKENT(edid, 1, 1, do_edid, "", ""),
	U_BOOT_CMD_MKENT(rx_det, 1, 1, do_rx_det, "", ""),
	U_BOOT_CMD_MKENT(output, 3, 1, do_output, "", ""),
	U_BOOT_CMD_MKENT(blank, 3, 1, do_blank, "", ""),
	U_BOOT_CMD_MKENT(off, 1, 1, do_off, "", ""),
	U_BOOT_CMD_MKENT(dump, 1, 1, do_dump, "", ""),
	U_BOOT_CMD_MKENT(info, 1, 1, do_info, "", ""),
	U_BOOT_CMD_MKENT(get_preferred_mode, 1, 1, do_get_preferred_mode, "", ""),
	U_BOOT_CMD_MKENT(mode, 1, 1, do_mode, "", ""),
};

static int do_hdmitx(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
	cmd_tbl_t *c;

	if (argc < 2)
		return cmd_usage(cmdtp);

	argc--;
	argv++;

	c = find_cmd_tbl(argv[0], &cmd_hdmi_sub[0], ARRAY_SIZE(cmd_hdmi_sub));

	if (c)
		return  c->cmd(cmdtp, flag, argc, argv);
	else
		return cmd_usage(cmdtp);
}

U_BOOT_CMD(hdmitx, CONFIG_SYS_MAXARGS, 0, do_hdmitx,
	   "HDMITX sub-system",
	"hdmitx hpd\n"
	"    Detect hdmi rx plug-in\n"
	"hdmitx get_preferred_mode\n"
	"    Read full edid data, parse edid, and get preferred mode\n"
	"hdmitx edid\n"
	"    Read hdmi edid full raw data\n"
	"hdmitx output [list | FORMAT | bist PATTERN]\n"
	"    list: list support formats\n"
	"    FORMAT can be 720p60/50hz, 1080i60/50hz, 1080p60hz, etc\n"
	"       extend with 8bits/10bits, y444/y422/y420/rgb\n"
	"       such as 2160p60hz,10bits,y420\n"
	"    PATTERN: can be as: line, dot, off, or 1920(width)\n"
	"hdmitx blank [0|1]\n"
	"    1: output blank  0: output normal\n"
	"hdmitx off\n"
	"    Turn off hdmitx output\n"
	"hdmitx info\n"
	"    current mode info\n"
	"hdmitx rx_det\n"
	"    Auto detect if RX is FBC and set outputmode\n"
	"hdmitx mode [hdmi/dvi]\n"
	"    set vout mode : hdmi or dvi\n"
);