drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c

/*
 * ti_hdmi_4xxx_ip.c
 *
 * HDMI TI81xx, TI38xx, TI OMAP4 etc IP driver Library
 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com/
 * Authors: Yong Zhi
 *	Mythri pk <mythripk@ti.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.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/mutex.h>
#include <linux/delay.h>
#include <linux/string.h>
#include <linux/seq_file.h>
#include <linux/gpio.h>
#if defined(CONFIG_OMAP4_DSS_HDMI_AUDIO)
#include <sound/asound.h>
#include <sound/asoundef.h>
#endif

#include "ti_hdmi_4xxx_ip.h"
#include "dss.h"
#include "dss_features.h"

static inline void hdmi_write_reg(void __iomem *base_addr,
				const u16 idx, u32 val)
{
	__raw_writel(val, base_addr + idx);
}

static inline u32 hdmi_read_reg(void __iomem *base_addr,
				const u16 idx)
{
	return __raw_readl(base_addr + idx);
}

static inline void __iomem *hdmi_wp_base(struct hdmi_ip_data *ip_data)
{
	return ip_data->base_wp;
}

static inline void __iomem *hdmi_phy_base(struct hdmi_ip_data *ip_data)
{
	return ip_data->base_wp + ip_data->phy_offset;
}

static inline void __iomem *hdmi_pll_base(struct hdmi_ip_data *ip_data)
{
	return ip_data->base_wp + ip_data->pll_offset;
}

static inline void __iomem *hdmi_av_base(struct hdmi_ip_data *ip_data)
{
	return ip_data->base_wp + ip_data->core_av_offset;
}

static inline void __iomem *hdmi_core_sys_base(struct hdmi_ip_data *ip_data)
{
	return ip_data->base_wp + ip_data->core_sys_offset;
}

static inline int hdmi_wait_for_bit_change(void __iomem *base_addr,
				const u16 idx,
				int b2, int b1, u32 val)
{
	u32 t = 0;
	while (val != REG_GET(base_addr, idx, b2, b1)) {
		udelay(1);
		if (t++ > 10000)
			return !val;
	}
	return val;
}

static int hdmi_pll_init(struct hdmi_ip_data *ip_data)
{
	u32 r;
	void __iomem *pll_base = hdmi_pll_base(ip_data);
	struct hdmi_pll_info *fmt = &ip_data->pll_data;

	/* PLL start always use manual mode */
	REG_FLD_MOD(pll_base, PLLCTRL_PLL_CONTROL, 0x0, 0, 0);

	r = hdmi_read_reg(pll_base, PLLCTRL_CFG1);
	r = FLD_MOD(r, fmt->regm, 20, 9); /* CFG1_PLL_REGM */
	r = FLD_MOD(r, fmt->regn - 1, 8, 1);  /* CFG1_PLL_REGN */

	hdmi_write_reg(pll_base, PLLCTRL_CFG1, r);

	r = hdmi_read_reg(pll_base, PLLCTRL_CFG2);

	r = FLD_MOD(r, 0x0, 12, 12); /* PLL_HIGHFREQ divide by 2 */
	r = FLD_MOD(r, 0x1, 13, 13); /* PLL_REFEN */
	r = FLD_MOD(r, 0x0, 14, 14); /* PHY_CLKINEN de-assert during locking */
	r = FLD_MOD(r, fmt->refsel, 22, 21); /* REFSEL */

	if (fmt->dcofreq) {
		/* divider programming for frequency beyond 1000Mhz */
		REG_FLD_MOD(pll_base, PLLCTRL_CFG3, fmt->regsd, 17, 10);
		r = FLD_MOD(r, 0x4, 3, 1); /* 1000MHz and 2000MHz */
	} else {
		r = FLD_MOD(r, 0x2, 3, 1); /* 500MHz and 1000MHz */
	}

	hdmi_write_reg(pll_base, PLLCTRL_CFG2, r);

	r = hdmi_read_reg(pll_base, PLLCTRL_CFG4);
	r = FLD_MOD(r, fmt->regm2, 24, 18);
	r = FLD_MOD(r, fmt->regmf, 17, 0);

	hdmi_write_reg(pll_base, PLLCTRL_CFG4, r);

	/* go now */
	REG_FLD_MOD(pll_base, PLLCTRL_PLL_GO, 0x1, 0, 0);

	/* wait for bit change */
	if (hdmi_wait_for_bit_change(pll_base, PLLCTRL_PLL_GO,
							0, 0, 1) != 1) {
		pr_err("PLL GO bit not set\n");
		return -ETIMEDOUT;
	}

	/* Wait till the lock bit is set in PLL status */
	if (hdmi_wait_for_bit_change(pll_base,
				PLLCTRL_PLL_STATUS, 1, 1, 1) != 1) {
		pr_err("cannot lock PLL\n");
		pr_err("CFG1 0x%x\n",
			hdmi_read_reg(pll_base, PLLCTRL_CFG1));
		pr_err("CFG2 0x%x\n",
			hdmi_read_reg(pll_base, PLLCTRL_CFG2));
		pr_err("CFG4 0x%x\n",
			hdmi_read_reg(pll_base, PLLCTRL_CFG4));
		return -ETIMEDOUT;
	}

	pr_debug("PLL locked!\n");

	return 0;
}

/* PHY_PWR_CMD */
static int hdmi_set_phy_pwr(struct hdmi_ip_data *ip_data, enum hdmi_phy_pwr val)
{
	/* Return if already the state */
	if (REG_GET(hdmi_wp_base(ip_data), HDMI_WP_PWR_CTRL, 5, 4) == val)
		return 0;

	/* Command for power control of HDMI PHY */
	REG_FLD_MOD(hdmi_wp_base(ip_data), HDMI_WP_PWR_CTRL, val, 7, 6);

	/* Status of the power control of HDMI PHY */
	if (hdmi_wait_for_bit_change(hdmi_wp_base(ip_data),
				HDMI_WP_PWR_CTRL, 5, 4, val) != val) {
		pr_err("Failed to set PHY power mode to %d\n", val);
		return -ETIMEDOUT;
	}

	return 0;
}

/* PLL_PWR_CMD */
static int hdmi_set_pll_pwr(struct hdmi_ip_data *ip_data, enum hdmi_pll_pwr val)
{
	/* Command for power control of HDMI PLL */
	REG_FLD_MOD(hdmi_wp_base(ip_data), HDMI_WP_PWR_CTRL, val, 3, 2);

	/* wait till PHY_PWR_STATUS is set */
	if (hdmi_wait_for_bit_change(hdmi_wp_base(ip_data), HDMI_WP_PWR_CTRL,
						1, 0, val) != val) {
		pr_err("Failed to set PLL_PWR_STATUS\n");
		return -ETIMEDOUT;
	}

	return 0;
}

static int hdmi_pll_reset(struct hdmi_ip_data *ip_data)
{
	/* SYSRESET  controlled by power FSM */
	REG_FLD_MOD(hdmi_pll_base(ip_data), PLLCTRL_PLL_CONTROL, 0x0, 3, 3);

	/* READ 0x0 reset is in progress */
	if (hdmi_wait_for_bit_change(hdmi_pll_base(ip_data),
				PLLCTRL_PLL_STATUS, 0, 0, 1) != 1) {
		pr_err("Failed to sysreset PLL\n");
		return -ETIMEDOUT;
	}

	return 0;
}

int ti_hdmi_4xxx_pll_enable(struct hdmi_ip_data *ip_data)
{
	u16 r = 0;

	r = hdmi_set_pll_pwr(ip_data, HDMI_PLLPWRCMD_ALLOFF);
	if (r)
		return r;

	r = hdmi_set_pll_pwr(ip_data, HDMI_PLLPWRCMD_BOTHON_ALLCLKS);
	if (r)
		return r;

	r = hdmi_pll_reset(ip_data);
	if (r)
		return r;

	r = hdmi_pll_init(ip_data);
	if (r)
		return r;

	return 0;
}

void ti_hdmi_4xxx_pll_disable(struct hdmi_ip_data *ip_data)
{
	hdmi_set_pll_pwr(ip_data, HDMI_PLLPWRCMD_ALLOFF);
}

static int hdmi_check_hpd_state(struct hdmi_ip_data *ip_data)
{
	bool hpd;
	int r;

	mutex_lock(&ip_data->lock);

	hpd = gpio_get_value(ip_data->hpd_gpio);

	if (hpd)
		r = hdmi_set_phy_pwr(ip_data, HDMI_PHYPWRCMD_TXON);
	else
		r = hdmi_set_phy_pwr(ip_data, HDMI_PHYPWRCMD_LDOON);

	if (r) {
		DSSERR("Failed to %s PHY TX power\n",
				hpd ? "enable" : "disable");
		goto err;
	}

err:
	mutex_unlock(&ip_data->lock);
	return r;
}

static irqreturn_t hpd_irq_handler(int irq, void *data)
{
	struct hdmi_ip_data *ip_data = data;

	hdmi_check_hpd_state(ip_data);

	return IRQ_HANDLED;
}

int ti_hdmi_4xxx_phy_enable(struct hdmi_ip_data *ip_data)
{
	u16 r = 0;
	void __iomem *phy_base = hdmi_phy_base(ip_data);

	r = hdmi_set_phy_pwr(ip_data, HDMI_PHYPWRCMD_LDOON);
	if (r)
		return r;

	/*
	 * Read address 0 in order to get the SCP reset done completed
	 * Dummy access performed to make sure reset is done
	 */
	hdmi_read_reg(phy_base, HDMI_TXPHY_TX_CTRL);

	/*
	 * Write to phy address 0 to configure the clock
	 * use HFBITCLK write HDMI_TXPHY_TX_CONTROL_FREQOUT field
	 */
	REG_FLD_MOD(phy_base, HDMI_TXPHY_TX_CTRL, 0x1, 31, 30);

	/* Write to phy address 1 to start HDMI line (TXVALID and TMDSCLKEN) */
	hdmi_write_reg(phy_base, HDMI_TXPHY_DIGITAL_CTRL, 0xF0000000);

	/* Setup max LDO voltage */
	REG_FLD_MOD(phy_base, HDMI_TXPHY_POWER_CTRL, 0xB, 3, 0);

	/* Write to phy address 3 to change the polarity control */
	REG_FLD_MOD(phy_base, HDMI_TXPHY_PAD_CFG_CTRL, 0x1, 27, 27);

	r = request_threaded_irq(gpio_to_irq(ip_data->hpd_gpio),
				 NULL, hpd_irq_handler,
				 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING |
				 IRQF_ONESHOT, "hpd", ip_data);
	if (r) {
		DSSERR("HPD IRQ request failed\n");
		hdmi_set_phy_pwr(ip_data, HDMI_PHYPWRCMD_OFF);
		return r;
	}

	r = hdmi_check_hpd_state(ip_data);
	if (r) {
		free_irq(gpio_to_irq(ip_data->hpd_gpio), ip_data);
		hdmi_set_phy_pwr(ip_data, HDMI_PHYPWRCMD_OFF);
		return r;
	}

	return 0;
}

void ti_hdmi_4xxx_phy_disable(struct hdmi_ip_data *ip_data)
{
	free_irq(gpio_to_irq(ip_data->hpd_gpio), ip_data);

	hdmi_set_phy_pwr(ip_data, HDMI_PHYPWRCMD_OFF);
}

static int hdmi_core_ddc_init(struct hdmi_ip_data *ip_data)
{
	void __iomem *base = hdmi_core_sys_base(ip_data);

	/* Turn on CLK for DDC */
	REG_FLD_MOD(base, HDMI_CORE_AV_DPD, 0x7, 2, 0);

	/* IN_PROG */
	if (REG_GET(base, HDMI_CORE_DDC_STATUS, 4, 4) == 1) {
		/* Abort transaction */
		REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0xf, 3, 0);
		/* IN_PROG */
		if (hdmi_wait_for_bit_change(base, HDMI_CORE_DDC_STATUS,
					4, 4, 0) != 0) {
			DSSERR("Timeout aborting DDC transaction\n");
			return -ETIMEDOUT;
		}
	}

	/* Clk SCL Devices */
	REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0xA, 3, 0);

	/* HDMI_CORE_DDC_STATUS_IN_PROG */
	if (hdmi_wait_for_bit_change(base, HDMI_CORE_DDC_STATUS,
				4, 4, 0) != 0) {
		DSSERR("Timeout starting SCL clock\n");
		return -ETIMEDOUT;
	}

	/* Clear FIFO */
	REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0x9, 3, 0);

	/* HDMI_CORE_DDC_STATUS_IN_PROG */
	if (hdmi_wait_for_bit_change(base, HDMI_CORE_DDC_STATUS,
				4, 4, 0) != 0) {
		DSSERR("Timeout clearing DDC fifo\n");
		return -ETIMEDOUT;
	}

	return 0;
}

static int hdmi_core_ddc_edid(struct hdmi_ip_data *ip_data,
		u8 *pedid, int ext)
{
	void __iomem *base = hdmi_core_sys_base(ip_data);
	u32 i;
	char checksum;
	u32 offset = 0;

	/* HDMI_CORE_DDC_STATUS_IN_PROG */
	if (hdmi_wait_for_bit_change(base, HDMI_CORE_DDC_STATUS,
				4, 4, 0) != 0) {
		DSSERR("Timeout waiting DDC to be ready\n");
		return -ETIMEDOUT;
	}

	if (ext % 2 != 0)
		offset = 0x80;

	/* Load Segment Address Register */
	REG_FLD_MOD(base, HDMI_CORE_DDC_SEGM, ext / 2, 7, 0);

	/* Load Slave Address Register */
	REG_FLD_MOD(base, HDMI_CORE_DDC_ADDR, 0xA0 >> 1, 7, 1);

	/* Load Offset Address Register */
	REG_FLD_MOD(base, HDMI_CORE_DDC_OFFSET, offset, 7, 0);

	/* Load Byte Count */
	REG_FLD_MOD(base, HDMI_CORE_DDC_COUNT1, 0x80, 7, 0);
	REG_FLD_MOD(base, HDMI_CORE_DDC_COUNT2, 0x0, 1, 0);

	/* Set DDC_CMD */
	if (ext)
		REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0x4, 3, 0);
	else
		REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0x2, 3, 0);

	/* HDMI_CORE_DDC_STATUS_BUS_LOW */
	if (REG_GET(base, HDMI_CORE_DDC_STATUS, 6, 6) == 1) {
		pr_err("I2C Bus Low?\n");
		return -EIO;
	}
	/* HDMI_CORE_DDC_STATUS_NO_ACK */
	if (REG_GET(base, HDMI_CORE_DDC_STATUS, 5, 5) == 1) {
		pr_err("I2C No Ack\n");
		return -EIO;
	}

	for (i = 0; i < 0x80; ++i) {
		int t;

		/* IN_PROG */
		if (REG_GET(base, HDMI_CORE_DDC_STATUS, 4, 4) == 0) {
			DSSERR("operation stopped when reading edid\n");
			return -EIO;
		}

		t = 0;
		/* FIFO_EMPTY */
		while (REG_GET(base, HDMI_CORE_DDC_STATUS, 2, 2) == 1) {
			if (t++ > 10000) {
				DSSERR("timeout reading edid\n");
				return -ETIMEDOUT;
			}
			udelay(1);
		}

		pedid[i] = REG_GET(base, HDMI_CORE_DDC_DATA, 7, 0);
	}

	checksum = 0;
	for (i = 0; i < 0x80; ++i)
		checksum += pedid[i];

	if (checksum != 0) {
		pr_err("E-EDID checksum failed!!\n");
		return -EIO;
	}

	return 0;
}

int ti_hdmi_4xxx_read_edid(struct hdmi_ip_data *ip_data,
				u8 *edid, int len)
{
	int r, l;

	if (len < 128)
		return -EINVAL;

	r = hdmi_core_ddc_init(ip_data);
	if (r)
		return r;

	r = hdmi_core_ddc_edid(ip_data, edid, 0);
	if (r)
		return r;

	l = 128;

	if (len >= 128 * 2 && edid[0x7e] > 0) {
		r = hdmi_core_ddc_edid(ip_data, edid + 0x80, 1);
		if (r)
			return r;
		l += 128;
	}

	return l;
}

bool ti_hdmi_4xxx_detect(struct hdmi_ip_data *ip_data)
{
	return gpio_get_value(ip_data->hpd_gpio);
}

static void hdmi_core_init(struct hdmi_core_video_config *video_cfg,
			struct hdmi_core_infoframe_avi *avi_cfg,
			struct hdmi_core_packet_enable_repeat *repeat_cfg)
{
	pr_debug("Enter hdmi_core_init\n");

	/* video core */
	video_cfg->ip_bus_width = HDMI_INPUT_8BIT;
	video_cfg->op_dither_truc = HDMI_OUTPUTTRUNCATION_8BIT;
	video_cfg->deep_color_pkt = HDMI_DEEPCOLORPACKECTDISABLE;
	video_cfg->pkt_mode = HDMI_PACKETMODERESERVEDVALUE;
	video_cfg->hdmi_dvi = HDMI_DVI;
	video_cfg->tclk_sel_clkmult = HDMI_FPLL10IDCK;

	/* info frame */
	avi_cfg->db1_format = 0;
	avi_cfg->db1_active_info = 0;
	avi_cfg->db1_bar_info_dv = 0;
	avi_cfg->db1_scan_info = 0;
	avi_cfg->db2_colorimetry = 0;
	avi_cfg->db2_aspect_ratio = 0;
	avi_cfg->db2_active_fmt_ar = 0;
	avi_cfg->db3_itc = 0;
	avi_cfg->db3_ec = 0;
	avi_cfg->db3_q_range = 0;
	avi_cfg->db3_nup_scaling = 0;
	avi_cfg->db4_videocode = 0;
	avi_cfg->db5_pixel_repeat = 0;
	avi_cfg->db6_7_line_eoftop = 0 ;
	avi_cfg->db8_9_line_sofbottom = 0;
	avi_cfg->db10_11_pixel_eofleft = 0;
	avi_cfg->db12_13_pixel_sofright = 0;

	/* packet enable and repeat */
	repeat_cfg->audio_pkt = 0;
	repeat_cfg->audio_pkt_repeat = 0;
	repeat_cfg->avi_infoframe = 0;
	repeat_cfg->avi_infoframe_repeat = 0;
	repeat_cfg->gen_cntrl_pkt = 0;
	repeat_cfg->gen_cntrl_pkt_repeat = 0;
	repeat_cfg->generic_pkt = 0;
	repeat_cfg->generic_pkt_repeat = 0;
}

static void hdmi_core_powerdown_disable(struct hdmi_ip_data *ip_data)
{
	pr_debug("Enter hdmi_core_powerdown_disable\n");
	REG_FLD_MOD(hdmi_core_sys_base(ip_data), HDMI_CORE_CTRL1, 0x0, 0, 0);
}

static void hdmi_core_swreset_release(struct hdmi_ip_data *ip_data)
{
	pr_debug("Enter hdmi_core_swreset_release\n");
	REG_FLD_MOD(hdmi_core_sys_base(ip_data), HDMI_CORE_SYS_SRST, 0x0, 0, 0);
}

static void hdmi_core_swreset_assert(struct hdmi_ip_data *ip_data)
{
	pr_debug("Enter hdmi_core_swreset_assert\n");
	REG_FLD_MOD(hdmi_core_sys_base(ip_data), HDMI_CORE_SYS_SRST, 0x1, 0, 0);
}

/* HDMI_CORE_VIDEO_CONFIG */
static void hdmi_core_video_config(struct hdmi_ip_data *ip_data,
				struct hdmi_core_video_config *cfg)
{
	u32 r = 0;
	void __iomem *core_sys_base = hdmi_core_sys_base(ip_data);

	/* sys_ctrl1 default configuration not tunable */
	r = hdmi_read_reg(core_sys_base, HDMI_CORE_CTRL1);
	r = FLD_MOD(r, HDMI_CORE_CTRL1_VEN_FOLLOWVSYNC, 5, 5);
	r = FLD_MOD(r, HDMI_CORE_CTRL1_HEN_FOLLOWHSYNC, 4, 4);
	r = FLD_MOD(r, HDMI_CORE_CTRL1_BSEL_24BITBUS, 2, 2);
	r = FLD_MOD(r, HDMI_CORE_CTRL1_EDGE_RISINGEDGE, 1, 1);
	hdmi_write_reg(core_sys_base, HDMI_CORE_CTRL1, r);

	REG_FLD_MOD(core_sys_base,
			HDMI_CORE_SYS_VID_ACEN, cfg->ip_bus_width, 7, 6);

	/* Vid_Mode */
	r = hdmi_read_reg(core_sys_base, HDMI_CORE_SYS_VID_MODE);

	/* dither truncation configuration */
	if (cfg->op_dither_truc > HDMI_OUTPUTTRUNCATION_12BIT) {
		r = FLD_MOD(r, cfg->op_dither_truc - 3, 7, 6);
		r = FLD_MOD(r, 1, 5, 5);
	} else {
		r = FLD_MOD(r, cfg->op_dither_truc, 7, 6);
		r = FLD_MOD(r, 0, 5, 5);
	}
	hdmi_write_reg(core_sys_base, HDMI_CORE_SYS_VID_MODE, r);

	/* HDMI_Ctrl */
	r = hdmi_read_reg(hdmi_av_base(ip_data), HDMI_CORE_AV_HDMI_CTRL);
	r = FLD_MOD(r, cfg->deep_color_pkt, 6, 6);
	r = FLD_MOD(r, cfg->pkt_mode, 5, 3);
	r = FLD_MOD(r, cfg->hdmi_dvi, 0, 0);
	hdmi_write_reg(hdmi_av_base(ip_data), HDMI_CORE_AV_HDMI_CTRL, r);

	/* TMDS_CTRL */
	REG_FLD_MOD(core_sys_base,
			HDMI_CORE_SYS_TMDS_CTRL, cfg->tclk_sel_clkmult, 6, 5);
}

static void hdmi_core_aux_infoframe_avi_config(struct hdmi_ip_data *ip_data)
{
	u32 val;
	char sum = 0, checksum = 0;
	void __iomem *av_base = hdmi_av_base(ip_data);
	struct hdmi_core_infoframe_avi info_avi = ip_data->avi_cfg;

	sum += 0x82 + 0x002 + 0x00D;
	hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_TYPE, 0x082);
	hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_VERS, 0x002);
	hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_LEN, 0x00D);

	val = (info_avi.db1_format << 5) |
		(info_avi.db1_active_info << 4) |
		(info_avi.db1_bar_info_dv << 2) |
		(info_avi.db1_scan_info);
	hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(0), val);
	sum += val;

	val = (info_avi.db2_colorimetry << 6) |
		(info_avi.db2_aspect_ratio << 4) |
		(info_avi.db2_active_fmt_ar);
	hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(1), val);
	sum += val;

	val = (info_avi.db3_itc << 7) |
		(info_avi.db3_ec << 4) |
		(info_avi.db3_q_range << 2) |
		(info_avi.db3_nup_scaling);
	hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(2), val);
	sum += val;

	hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(3),
					info_avi.db4_videocode);
	sum += info_avi.db4_videocode;

	val = info_avi.db5_pixel_repeat;
	hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(4), val);
	sum += val;

	val = info_avi.db6_7_line_eoftop & 0x00FF;
	hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(5), val);
	sum += val;

	val = ((info_avi.db6_7_line_eoftop >> 8) & 0x00FF);
	hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(6), val);
	sum += val;

	val = info_avi.db8_9_line_sofbottom & 0x00FF;
	hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(7), val);
	sum += val;

	val = ((info_avi.db8_9_line_sofbottom >> 8) & 0x00FF);
	hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(8), val);
	sum += val;

	val = info_avi.db10_11_pixel_eofleft & 0x00FF;
	hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(9), val);
	sum += val;

	val = ((info_avi.db10_11_pixel_eofleft >> 8) & 0x00FF);
	hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(10), val);
	sum += val;

	val = info_avi.db12_13_pixel_sofright & 0x00FF;
	hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(11), val);
	sum += val;

	val = ((info_avi.db12_13_pixel_sofright >> 8) & 0x00FF);
	hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_DBYTE(12), val);
	sum += val;

	checksum = 0x100 - sum;
	hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_CHSUM, checksum);
}

static void hdmi_core_av_packet_config(struct hdmi_ip_data *ip_data,
		struct hdmi_core_packet_enable_repeat repeat_cfg)
{
	/* enable/repeat the infoframe */
	hdmi_write_reg(hdmi_av_base(ip_data), HDMI_CORE_AV_PB_CTRL1,
		(repeat_cfg.audio_pkt << 5) |
		(repeat_cfg.audio_pkt_repeat << 4) |
		(repeat_cfg.avi_infoframe << 1) |
		(repeat_cfg.avi_infoframe_repeat));

	/* enable/repeat the packet */
	hdmi_write_reg(hdmi_av_base(ip_data), HDMI_CORE_AV_PB_CTRL2,
		(repeat_cfg.gen_cntrl_pkt << 3) |
		(repeat_cfg.gen_cntrl_pkt_repeat << 2) |
		(repeat_cfg.generic_pkt << 1) |
		(repeat_cfg.generic_pkt_repeat));
}

static void hdmi_wp_init(struct omap_video_timings *timings,
			struct hdmi_video_format *video_fmt)
{
	pr_debug("Enter hdmi_wp_init\n");

	timings->hbp = 0;
	timings->hfp = 0;
	timings->hsw = 0;
	timings->vbp = 0;
	timings->vfp = 0;
	timings->vsw = 0;

	video_fmt->packing_mode = HDMI_PACK_10b_RGB_YUV444;
	video_fmt->y_res = 0;
	video_fmt->x_res = 0;

}

int ti_hdmi_4xxx_wp_video_start(struct hdmi_ip_data *ip_data)
{
	REG_FLD_MOD(hdmi_wp_base(ip_data), HDMI_WP_VIDEO_CFG, true, 31, 31);
	return 0;
}

void ti_hdmi_4xxx_wp_video_stop(struct hdmi_ip_data *ip_data)
{
	REG_FLD_MOD(hdmi_wp_base(ip_data), HDMI_WP_VIDEO_CFG, false, 31, 31);
}

static void hdmi_wp_video_init_format(struct hdmi_video_format *video_fmt,
	struct omap_video_timings *timings, struct hdmi_config *param)
{
	pr_debug("Enter hdmi_wp_video_init_format\n");

	video_fmt->y_res = param->timings.y_res;
	video_fmt->x_res = param->timings.x_res;

	timings->hbp = param->timings.hbp;
	timings->hfp = param->timings.hfp;
	timings->hsw = param->timings.hsw;
	timings->vbp = param->timings.vbp;
	timings->vfp = param->timings.vfp;
	timings->vsw = param->timings.vsw;
}

static void hdmi_wp_video_config_format(struct hdmi_ip_data *ip_data,
		struct hdmi_video_format *video_fmt)
{
	u32 l = 0;

	REG_FLD_MOD(hdmi_wp_base(ip_data), HDMI_WP_VIDEO_CFG,
			video_fmt->packing_mode, 10, 8);

	l |= FLD_VAL(video_fmt->y_res, 31, 16);
	l |= FLD_VAL(video_fmt->x_res, 15, 0);
	hdmi_write_reg(hdmi_wp_base(ip_data), HDMI_WP_VIDEO_SIZE, l);
}

static void hdmi_wp_video_config_interface(struct hdmi_ip_data *ip_data)
{
	u32 r;
	bool vsync_pol, hsync_pol;
	pr_debug("Enter hdmi_wp_video_config_interface\n");

	vsync_pol = ip_data->cfg.timings.vsync_level == OMAPDSS_SIG_ACTIVE_HIGH;
	hsync_pol = ip_data->cfg.timings.hsync_level == OMAPDSS_SIG_ACTIVE_HIGH;

	r = hdmi_read_reg(hdmi_wp_base(ip_data), HDMI_WP_VIDEO_CFG);
	r = FLD_MOD(r, vsync_pol, 7, 7);
	r = FLD_MOD(r, hsync_pol, 6, 6);
	r = FLD_MOD(r, ip_data->cfg.timings.interlace, 3, 3);
	r = FLD_MOD(r, 1, 1, 0); /* HDMI_TIMING_MASTER_24BIT */
	hdmi_write_reg(hdmi_wp_base(ip_data), HDMI_WP_VIDEO_CFG, r);
}

static void hdmi_wp_video_config_timing(struct hdmi_ip_data *ip_data,
		struct omap_video_timings *timings)
{
	u32 timing_h = 0;
	u32 timing_v = 0;

	pr_debug("Enter hdmi_wp_video_config_timing\n");

	timing_h |= FLD_VAL(timings->hbp, 31, 20);
	timing_h |= FLD_VAL(timings->hfp, 19, 8);
	timing_h |= FLD_VAL(timings->hsw, 7, 0);
	hdmi_write_reg(hdmi_wp_base(ip_data), HDMI_WP_VIDEO_TIMING_H, timing_h);

	timing_v |= FLD_VAL(timings->vbp, 31, 20);
	timing_v |= FLD_VAL(timings->vfp, 19, 8);
	timing_v |= FLD_VAL(timings->vsw, 7, 0);
	hdmi_write_reg(hdmi_wp_base(ip_data), HDMI_WP_VIDEO_TIMING_V, timing_v);
}

void ti_hdmi_4xxx_basic_configure(struct hdmi_ip_data *ip_data)
{
	/* HDMI */
	struct omap_video_timings video_timing;
	struct hdmi_video_format video_format;
	/* HDMI core */
	struct hdmi_core_infoframe_avi avi_cfg = ip_data->avi_cfg;
	struct hdmi_core_video_config v_core_cfg;
	struct hdmi_core_packet_enable_repeat repeat_cfg;
	struct hdmi_config *cfg = &ip_data->cfg;

	hdmi_wp_init(&video_timing, &video_format);

	hdmi_core_init(&v_core_cfg,
		&avi_cfg,
		&repeat_cfg);

	hdmi_wp_video_init_format(&video_format, &video_timing, cfg);

	hdmi_wp_video_config_timing(ip_data, &video_timing);

	/* video config */
	video_format.packing_mode = HDMI_PACK_24b_RGB_YUV444_YUV422;

	hdmi_wp_video_config_format(ip_data, &video_format);

	hdmi_wp_video_config_interface(ip_data);

	/*
	 * configure core video part
	 * set software reset in the core
	 */
	hdmi_core_swreset_assert(ip_data);

	/* power down off */
	hdmi_core_powerdown_disable(ip_data);

	v_core_cfg.pkt_mode = HDMI_PACKETMODE24BITPERPIXEL;
	v_core_cfg.hdmi_dvi = cfg->cm.mode;

	hdmi_core_video_config(ip_data, &v_core_cfg);

	/* release software reset in the core */
	hdmi_core_swreset_release(ip_data);

	/*
	 * configure packet
	 * info frame video see doc CEA861-D page 65
	 */
	avi_cfg.db1_format = HDMI_INFOFRAME_AVI_DB1Y_RGB;
	avi_cfg.db1_active_info =
		HDMI_INFOFRAME_AVI_DB1A_ACTIVE_FORMAT_OFF;
	avi_cfg.db1_bar_info_dv = HDMI_INFOFRAME_AVI_DB1B_NO;
	avi_cfg.db1_scan_info = HDMI_INFOFRAME_AVI_DB1S_0;
	avi_cfg.db2_colorimetry = HDMI_INFOFRAME_AVI_DB2C_NO;
	avi_cfg.db2_aspect_ratio = HDMI_INFOFRAME_AVI_DB2M_NO;
	avi_cfg.db2_active_fmt_ar = HDMI_INFOFRAME_AVI_DB2R_SAME;
	avi_cfg.db3_itc = HDMI_INFOFRAME_AVI_DB3ITC_NO;
	avi_cfg.db3_ec = HDMI_INFOFRAME_AVI_DB3EC_XVYUV601;
	avi_cfg.db3_q_range = HDMI_INFOFRAME_AVI_DB3Q_DEFAULT;
	avi_cfg.db3_nup_scaling = HDMI_INFOFRAME_AVI_DB3SC_NO;
	avi_cfg.db4_videocode = cfg->cm.code;
	avi_cfg.db5_pixel_repeat = HDMI_INFOFRAME_AVI_DB5PR_NO;
	avi_cfg.db6_7_line_eoftop = 0;
	avi_cfg.db8_9_line_sofbottom = 0;
	avi_cfg.db10_11_pixel_eofleft = 0;
	avi_cfg.db12_13_pixel_sofright = 0;

	hdmi_core_aux_infoframe_avi_config(ip_data);

	/* enable/repeat the infoframe */
	repeat_cfg.avi_infoframe = HDMI_PACKETENABLE;
	repeat_cfg.avi_infoframe_repeat = HDMI_PACKETREPEATON;
	/* wakeup */
	repeat_cfg.audio_pkt = HDMI_PACKETENABLE;
	repeat_cfg.audio_pkt_repeat = HDMI_PACKETREPEATON;
	hdmi_core_av_packet_config(ip_data, repeat_cfg);
}

void ti_hdmi_4xxx_wp_dump(struct hdmi_ip_data *ip_data, struct seq_file *s)
{
#define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r,\
		hdmi_read_reg(hdmi_wp_base(ip_data), r))

	DUMPREG(HDMI_WP_REVISION);
	DUMPREG(HDMI_WP_SYSCONFIG);
	DUMPREG(HDMI_WP_IRQSTATUS_RAW);
	DUMPREG(HDMI_WP_IRQSTATUS);
	DUMPREG(HDMI_WP_PWR_CTRL);
	DUMPREG(HDMI_WP_IRQENABLE_SET);
	DUMPREG(HDMI_WP_VIDEO_CFG);
	DUMPREG(HDMI_WP_VIDEO_SIZE);
	DUMPREG(HDMI_WP_VIDEO_TIMING_H);
	DUMPREG(HDMI_WP_VIDEO_TIMING_V);
	DUMPREG(HDMI_WP_WP_CLK);
	DUMPREG(HDMI_WP_AUDIO_CFG);
	DUMPREG(HDMI_WP_AUDIO_CFG2);
	DUMPREG(HDMI_WP_AUDIO_CTRL);
	DUMPREG(HDMI_WP_AUDIO_DATA);
}

void ti_hdmi_4xxx_pll_dump(struct hdmi_ip_data *ip_data, struct seq_file *s)
{
#define DUMPPLL(r) seq_printf(s, "%-35s %08x\n", #r,\
		hdmi_read_reg(hdmi_pll_base(ip_data), r))

	DUMPPLL(PLLCTRL_PLL_CONTROL);
	DUMPPLL(PLLCTRL_PLL_STATUS);
	DUMPPLL(PLLCTRL_PLL_GO);
	DUMPPLL(PLLCTRL_CFG1);
	DUMPPLL(PLLCTRL_CFG2);
	DUMPPLL(PLLCTRL_CFG3);
	DUMPPLL(PLLCTRL_CFG4);
}

void ti_hdmi_4xxx_core_dump(struct hdmi_ip_data *ip_data, struct seq_file *s)
{
	int i;

#define CORE_REG(i, name) name(i)
#define DUMPCORE(r) seq_printf(s, "%-35s %08x\n", #r,\
		hdmi_read_reg(hdmi_core_sys_base(ip_data), r))
#define DUMPCOREAV(r) seq_printf(s, "%-35s %08x\n", #r,\
		hdmi_read_reg(hdmi_av_base(ip_data), r))
#define DUMPCOREAV2(i, r) seq_printf(s, "%s[%d]%*s %08x\n", #r, i, \
		(i < 10) ? 32 - strlen(#r) : 31 - strlen(#r), " ", \
		hdmi_read_reg(hdmi_av_base(ip_data), CORE_REG(i, r)))

	DUMPCORE(HDMI_CORE_SYS_VND_IDL);
	DUMPCORE(HDMI_CORE_SYS_DEV_IDL);
	DUMPCORE(HDMI_CORE_SYS_DEV_IDH);
	DUMPCORE(HDMI_CORE_SYS_DEV_REV);
	DUMPCORE(HDMI_CORE_SYS_SRST);
	DUMPCORE(HDMI_CORE_CTRL1);
	DUMPCORE(HDMI_CORE_SYS_SYS_STAT);
	DUMPCORE(HDMI_CORE_SYS_DE_DLY);
	DUMPCORE(HDMI_CORE_SYS_DE_CTRL);
	DUMPCORE(HDMI_CORE_SYS_DE_TOP);
	DUMPCORE(HDMI_CORE_SYS_DE_CNTL);
	DUMPCORE(HDMI_CORE_SYS_DE_CNTH);
	DUMPCORE(HDMI_CORE_SYS_DE_LINL);
	DUMPCORE(HDMI_CORE_SYS_DE_LINH_1);
	DUMPCORE(HDMI_CORE_SYS_VID_ACEN);
	DUMPCORE(HDMI_CORE_SYS_VID_MODE);
	DUMPCORE(HDMI_CORE_SYS_INTR_STATE);
	DUMPCORE(HDMI_CORE_SYS_INTR1);
	DUMPCORE(HDMI_CORE_SYS_INTR2);
	DUMPCORE(HDMI_CORE_SYS_INTR3);
	DUMPCORE(HDMI_CORE_SYS_INTR4);
	DUMPCORE(HDMI_CORE_SYS_UMASK1);
	DUMPCORE(HDMI_CORE_SYS_TMDS_CTRL);

	DUMPCORE(HDMI_CORE_DDC_ADDR);
	DUMPCORE(HDMI_CORE_DDC_SEGM);
	DUMPCORE(HDMI_CORE_DDC_OFFSET);
	DUMPCORE(HDMI_CORE_DDC_COUNT1);
	DUMPCORE(HDMI_CORE_DDC_COUNT2);
	DUMPCORE(HDMI_CORE_DDC_STATUS);
	DUMPCORE(HDMI_CORE_DDC_CMD);
	DUMPCORE(HDMI_CORE_DDC_DATA);

	DUMPCOREAV(HDMI_CORE_AV_ACR_CTRL);
	DUMPCOREAV(HDMI_CORE_AV_FREQ_SVAL);
	DUMPCOREAV(HDMI_CORE_AV_N_SVAL1);
	DUMPCOREAV(HDMI_CORE_AV_N_SVAL2);
	DUMPCOREAV(HDMI_CORE_AV_N_SVAL3);
	DUMPCOREAV(HDMI_CORE_AV_CTS_SVAL1);
	DUMPCOREAV(HDMI_CORE_AV_CTS_SVAL2);
	DUMPCOREAV(HDMI_CORE_AV_CTS_SVAL3);
	DUMPCOREAV(HDMI_CORE_AV_CTS_HVAL1);
	DUMPCOREAV(HDMI_CORE_AV_CTS_HVAL2);
	DUMPCOREAV(HDMI_CORE_AV_CTS_HVAL3);
	DUMPCOREAV(HDMI_CORE_AV_AUD_MODE);
	DUMPCOREAV(HDMI_CORE_AV_SPDIF_CTRL);
	DUMPCOREAV(HDMI_CORE_AV_HW_SPDIF_FS);
	DUMPCOREAV(HDMI_CORE_AV_SWAP_I2S);
	DUMPCOREAV(HDMI_CORE_AV_SPDIF_ERTH);
	DUMPCOREAV(HDMI_CORE_AV_I2S_IN_MAP);
	DUMPCOREAV(HDMI_CORE_AV_I2S_IN_CTRL);
	DUMPCOREAV(HDMI_CORE_AV_I2S_CHST0);
	DUMPCOREAV(HDMI_CORE_AV_I2S_CHST1);
	DUMPCOREAV(HDMI_CORE_AV_I2S_CHST2);
	DUMPCOREAV(HDMI_CORE_AV_I2S_CHST4);
	DUMPCOREAV(HDMI_CORE_AV_I2S_CHST5);
	DUMPCOREAV(HDMI_CORE_AV_ASRC);
	DUMPCOREAV(HDMI_CORE_AV_I2S_IN_LEN);
	DUMPCOREAV(HDMI_CORE_AV_HDMI_CTRL);
	DUMPCOREAV(HDMI_CORE_AV_AUDO_TXSTAT);
	DUMPCOREAV(HDMI_CORE_AV_AUD_PAR_BUSCLK_1);
	DUMPCOREAV(HDMI_CORE_AV_AUD_PAR_BUSCLK_2);
	DUMPCOREAV(HDMI_CORE_AV_AUD_PAR_BUSCLK_3);
	DUMPCOREAV(HDMI_CORE_AV_TEST_TXCTRL);
	DUMPCOREAV(HDMI_CORE_AV_DPD);
	DUMPCOREAV(HDMI_CORE_AV_PB_CTRL1);
	DUMPCOREAV(HDMI_CORE_AV_PB_CTRL2);
	DUMPCOREAV(HDMI_CORE_AV_AVI_TYPE);
	DUMPCOREAV(HDMI_CORE_AV_AVI_VERS);
	DUMPCOREAV(HDMI_CORE_AV_AVI_LEN);
	DUMPCOREAV(HDMI_CORE_AV_AVI_CHSUM);

	for (i = 0; i < HDMI_CORE_AV_AVI_DBYTE_NELEMS; i++)
		DUMPCOREAV2(i, HDMI_CORE_AV_AVI_DBYTE);

	DUMPCOREAV(HDMI_CORE_AV_SPD_TYPE);
	DUMPCOREAV(HDMI_CORE_AV_SPD_VERS);
	DUMPCOREAV(HDMI_CORE_AV_SPD_LEN);
	DUMPCOREAV(HDMI_CORE_AV_SPD_CHSUM);

	for (i = 0; i < HDMI_CORE_AV_SPD_DBYTE_NELEMS; i++)
		DUMPCOREAV2(i, HDMI_CORE_AV_SPD_DBYTE);

	DUMPCOREAV(HDMI_CORE_AV_AUDIO_TYPE);
	DUMPCOREAV(HDMI_CORE_AV_AUDIO_VERS);
	DUMPCOREAV(HDMI_CORE_AV_AUDIO_LEN);
	DUMPCOREAV(HDMI_CORE_AV_AUDIO_CHSUM);

	for (i = 0; i < HDMI_CORE_AV_AUD_DBYTE_NELEMS; i++)
		DUMPCOREAV2(i, HDMI_CORE_AV_AUD_DBYTE);

	DUMPCOREAV(HDMI_CORE_AV_MPEG_TYPE);
	DUMPCOREAV(HDMI_CORE_AV_MPEG_VERS);
	DUMPCOREAV(HDMI_CORE_AV_MPEG_LEN);
	DUMPCOREAV(HDMI_CORE_AV_MPEG_CHSUM);

	for (i = 0; i < HDMI_CORE_AV_MPEG_DBYTE_NELEMS; i++)
		DUMPCOREAV2(i, HDMI_CORE_AV_MPEG_DBYTE);

	for (i = 0; i < HDMI_CORE_AV_GEN_DBYTE_NELEMS; i++)
		DUMPCOREAV2(i, HDMI_CORE_AV_GEN_DBYTE);

	DUMPCOREAV(HDMI_CORE_AV_CP_BYTE1);

	for (i = 0; i < HDMI_CORE_AV_GEN2_DBYTE_NELEMS; i++)
		DUMPCOREAV2(i, HDMI_CORE_AV_GEN2_DBYTE);

	DUMPCOREAV(HDMI_CORE_AV_CEC_ADDR_ID);
}

void ti_hdmi_4xxx_phy_dump(struct hdmi_ip_data *ip_data, struct seq_file *s)
{
#define DUMPPHY(r) seq_printf(s, "%-35s %08x\n", #r,\
		hdmi_read_reg(hdmi_phy_base(ip_data), r))

	DUMPPHY(HDMI_TXPHY_TX_CTRL);
	DUMPPHY(HDMI_TXPHY_DIGITAL_CTRL);
	DUMPPHY(HDMI_TXPHY_POWER_CTRL);
	DUMPPHY(HDMI_TXPHY_PAD_CFG_CTRL);
}

#if defined(CONFIG_OMAP4_DSS_HDMI_AUDIO)
static void ti_hdmi_4xxx_wp_audio_config_format(struct hdmi_ip_data *ip_data,
					struct hdmi_audio_format *aud_fmt)
{
	u32 r;

	DSSDBG("Enter hdmi_wp_audio_config_format\n");

	r = hdmi_read_reg(hdmi_wp_base(ip_data), HDMI_WP_AUDIO_CFG);
	r = FLD_MOD(r, aud_fmt->stereo_channels, 26, 24);
	r = FLD_MOD(r, aud_fmt->active_chnnls_msk, 23, 16);
	r = FLD_MOD(r, aud_fmt->en_sig_blk_strt_end, 5, 5);
	r = FLD_MOD(r, aud_fmt->type, 4, 4);
	r = FLD_MOD(r, aud_fmt->justification, 3, 3);
	r = FLD_MOD(r, aud_fmt->sample_order, 2, 2);
	r = FLD_MOD(r, aud_fmt->samples_per_word, 1, 1);
	r = FLD_MOD(r, aud_fmt->sample_size, 0, 0);
	hdmi_write_reg(hdmi_wp_base(ip_data), HDMI_WP_AUDIO_CFG, r);
}

static void ti_hdmi_4xxx_wp_audio_config_dma(struct hdmi_ip_data *ip_data,
					struct hdmi_audio_dma *aud_dma)
{
	u32 r;

	DSSDBG("Enter hdmi_wp_audio_config_dma\n");

	r = hdmi_read_reg(hdmi_wp_base(ip_data), HDMI_WP_AUDIO_CFG2);
	r = FLD_MOD(r, aud_dma->transfer_size, 15, 8);
	r = FLD_MOD(r, aud_dma->block_size, 7, 0);
	hdmi_write_reg(hdmi_wp_base(ip_data), HDMI_WP_AUDIO_CFG2, r);

	r = hdmi_read_reg(hdmi_wp_base(ip_data), HDMI_WP_AUDIO_CTRL);
	r = FLD_MOD(r, aud_dma->mode, 9, 9);
	r = FLD_MOD(r, aud_dma->fifo_threshold, 8, 0);
	hdmi_write_reg(hdmi_wp_base(ip_data), HDMI_WP_AUDIO_CTRL, r);
}

static void ti_hdmi_4xxx_core_audio_config(struct hdmi_ip_data *ip_data,
					struct hdmi_core_audio_config *cfg)
{
	u32 r;
	void __iomem *av_base = hdmi_av_base(ip_data);

	/*
	 * Parameters for generation of Audio Clock Recovery packets
	 */
	REG_FLD_MOD(av_base, HDMI_CORE_AV_N_SVAL1, cfg->n, 7, 0);
	REG_FLD_MOD(av_base, HDMI_CORE_AV_N_SVAL2, cfg->n >> 8, 7, 0);
	REG_FLD_MOD(av_base, HDMI_CORE_AV_N_SVAL3, cfg->n >> 16, 7, 0);

	if (cfg->cts_mode == HDMI_AUDIO_CTS_MODE_SW) {
		REG_FLD_MOD(av_base, HDMI_CORE_AV_CTS_SVAL1, cfg->cts, 7, 0);
		REG_FLD_MOD(av_base,
				HDMI_CORE_AV_CTS_SVAL2, cfg->cts >> 8, 7, 0);
		REG_FLD_MOD(av_base,
				HDMI_CORE_AV_CTS_SVAL3, cfg->cts >> 16, 7, 0);
	} else {
		REG_FLD_MOD(av_base, HDMI_CORE_AV_AUD_PAR_BUSCLK_1,
				cfg->aud_par_busclk, 7, 0);
		REG_FLD_MOD(av_base, HDMI_CORE_AV_AUD_PAR_BUSCLK_2,
				(cfg->aud_par_busclk >> 8), 7, 0);
		REG_FLD_MOD(av_base, HDMI_CORE_AV_AUD_PAR_BUSCLK_3,
				(cfg->aud_par_busclk >> 16), 7, 0);
	}

	/* Set ACR clock divisor */
	REG_FLD_MOD(av_base,
			HDMI_CORE_AV_FREQ_SVAL, cfg->mclk_mode, 2, 0);

	r = hdmi_read_reg(av_base, HDMI_CORE_AV_ACR_CTRL);
	/*
	 * Use TMDS clock for ACR packets. For devices that use
	 * the MCLK, this is the first part of the MCLK initialization.
	 */
	r = FLD_MOD(r, 0, 2, 2);

	r = FLD_MOD(r, cfg->en_acr_pkt, 1, 1);
	r = FLD_MOD(r, cfg->cts_mode, 0, 0);
	hdmi_write_reg(av_base, HDMI_CORE_AV_ACR_CTRL, r);

	/* For devices using MCLK, this completes its initialization. */
	if (cfg->use_mclk)
		REG_FLD_MOD(av_base, HDMI_CORE_AV_ACR_CTRL, 1, 2, 2);

	/* Override of SPDIF sample frequency with value in I2S_CHST4 */
	REG_FLD_MOD(av_base, HDMI_CORE_AV_SPDIF_CTRL,
						cfg->fs_override, 1, 1);

	/*
	 * Set IEC-60958-3 channel status word. It is passed to the IP
	 * just as it is received. The user of the driver is responsible
	 * for its contents.
	 */
	hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST0,
		       cfg->iec60958_cfg->status[0]);
	hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST1,
		       cfg->iec60958_cfg->status[1]);
	hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST2,
		       cfg->iec60958_cfg->status[2]);
	/* yes, this is correct: status[3] goes to CHST4 register */
	hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST4,
		       cfg->iec60958_cfg->status[3]);
	/* yes, this is correct: status[4] goes to CHST5 register */
	hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST5,
		       cfg->iec60958_cfg->status[4]);

	/* set I2S parameters */
	r = hdmi_read_reg(av_base, HDMI_CORE_AV_I2S_IN_CTRL);
	r = FLD_MOD(r, cfg->i2s_cfg.sck_edge_mode, 6, 6);
	r = FLD_MOD(r, cfg->i2s_cfg.vbit, 4, 4);
	r = FLD_MOD(r, cfg->i2s_cfg.justification, 2, 2);
	r = FLD_MOD(r, cfg->i2s_cfg.direction, 1, 1);
	r = FLD_MOD(r, cfg->i2s_cfg.shift, 0, 0);
	hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_IN_CTRL, r);

	REG_FLD_MOD(av_base, HDMI_CORE_AV_I2S_IN_LEN,
			cfg->i2s_cfg.in_length_bits, 3, 0);

	/* Audio channels and mode parameters */
	REG_FLD_MOD(av_base, HDMI_CORE_AV_HDMI_CTRL, cfg->layout, 2, 1);
	r = hdmi_read_reg(av_base, HDMI_CORE_AV_AUD_MODE);
	r = FLD_MOD(r, cfg->i2s_cfg.active_sds, 7, 4);
	r = FLD_MOD(r, cfg->en_dsd_audio, 3, 3);
	r = FLD_MOD(r, cfg->en_parallel_aud_input, 2, 2);
	r = FLD_MOD(r, cfg->en_spdif, 1, 1);
	hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_MODE, r);

	/* Audio channel mappings */
	/* TODO: Make channel mapping dynamic. For now, map channels
	 * in the ALSA order: FL/FR/RL/RR/C/LFE/SL/SR. Remapping is needed as
	 * HDMI speaker order is different. See CEA-861 Section 6.6.2.
	 */
	hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_IN_MAP, 0x78);
	REG_FLD_MOD(av_base, HDMI_CORE_AV_SWAP_I2S, 1, 5, 5);
}

static void ti_hdmi_4xxx_core_audio_infoframe_cfg(struct hdmi_ip_data *ip_data,
		struct snd_cea_861_aud_if *info_aud)
{
	u8 sum = 0, checksum = 0;
	void __iomem *av_base = hdmi_av_base(ip_data);

	/*
	 * Set audio info frame type, version and length as
	 * described in HDMI 1.4a Section 8.2.2 specification.
	 * Checksum calculation is defined in Section 5.3.5.
	 */
	hdmi_write_reg(av_base, HDMI_CORE_AV_AUDIO_TYPE, 0x84);
	hdmi_write_reg(av_base, HDMI_CORE_AV_AUDIO_VERS, 0x01);
	hdmi_write_reg(av_base, HDMI_CORE_AV_AUDIO_LEN, 0x0a);
	sum += 0x84 + 0x001 + 0x00a;

	hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(0),
		       info_aud->db1_ct_cc);
	sum += info_aud->db1_ct_cc;

	hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(1),
		       info_aud->db2_sf_ss);
	sum += info_aud->db2_sf_ss;

	hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(2), info_aud->db3);
	sum += info_aud->db3;

	hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(3), info_aud->db4_ca);
	sum += info_aud->db4_ca;

	hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(4),
		       info_aud->db5_dminh_lsv);
	sum += info_aud->db5_dminh_lsv;

	hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(5), 0x00);
	hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(6), 0x00);
	hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(7), 0x00);
	hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(8), 0x00);
	hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(9), 0x00);

	checksum = 0x100 - sum;
	hdmi_write_reg(av_base,
					HDMI_CORE_AV_AUDIO_CHSUM, checksum);

	/*
	 * TODO: Add MPEG and SPD enable and repeat cfg when EDID parsing
	 * is available.
	 */
}

int ti_hdmi_4xxx_audio_config(struct hdmi_ip_data *ip_data,
		struct omap_dss_audio *audio)
{
	struct hdmi_audio_format audio_format;
	struct hdmi_audio_dma audio_dma;
	struct hdmi_core_audio_config core;
	int err, n, cts, channel_count;
	unsigned int fs_nr;
	bool word_length_16b = false;

	if (!audio || !audio->iec || !audio->cea || !ip_data)
		return -EINVAL;

	core.iec60958_cfg = audio->iec;
	/*
	 * In the IEC-60958 status word, check if the audio sample word length
	 * is 16-bit as several optimizations can be performed in such case.
	 */
	if (!(audio->iec->status[4] & IEC958_AES4_CON_MAX_WORDLEN_24))
		if (audio->iec->status[4] & IEC958_AES4_CON_WORDLEN_20_16)
			word_length_16b = true;

	/* I2S configuration. See Phillips' specification */
	if (word_length_16b)
		core.i2s_cfg.justification = HDMI_AUDIO_JUSTIFY_LEFT;
	else
		core.i2s_cfg.justification = HDMI_AUDIO_JUSTIFY_RIGHT;
	/*
	 * The I2S input word length is twice the lenght given in the IEC-60958
	 * status word. If the word size is greater than
	 * 20 bits, increment by one.
	 */
	core.i2s_cfg.in_length_bits = audio->iec->status[4]
		& IEC958_AES4_CON_WORDLEN;
	if (audio->iec->status[4] & IEC958_AES4_CON_MAX_WORDLEN_24)
		core.i2s_cfg.in_length_bits++;
	core.i2s_cfg.sck_edge_mode = HDMI_AUDIO_I2S_SCK_EDGE_RISING;
	core.i2s_cfg.vbit = HDMI_AUDIO_I2S_VBIT_FOR_PCM;
	core.i2s_cfg.direction = HDMI_AUDIO_I2S_MSB_SHIFTED_FIRST;
	core.i2s_cfg.shift = HDMI_AUDIO_I2S_FIRST_BIT_SHIFT;

	/* convert sample frequency to a number */
	switch (audio->iec->status[3] & IEC958_AES3_CON_FS) {
	case IEC958_AES3_CON_FS_32000:
		fs_nr = 32000;
		break;
	case IEC958_AES3_CON_FS_44100:
		fs_nr = 44100;
		break;
	case IEC958_AES3_CON_FS_48000:
		fs_nr = 48000;
		break;
	case IEC958_AES3_CON_FS_88200:
		fs_nr = 88200;
		break;
	case IEC958_AES3_CON_FS_96000:
		fs_nr = 96000;
		break;
	case IEC958_AES3_CON_FS_176400:
		fs_nr = 176400;
		break;
	case IEC958_AES3_CON_FS_192000:
		fs_nr = 192000;
		break;
	default:
		return -EINVAL;
	}

	err = hdmi_compute_acr(fs_nr, &n, &cts);

	/* Audio clock regeneration settings */
	core.n = n;
	core.cts = cts;
	if (dss_has_feature(FEAT_HDMI_CTS_SWMODE)) {
		core.aud_par_busclk = 0;
		core.cts_mode = HDMI_AUDIO_CTS_MODE_SW;
		core.use_mclk = dss_has_feature(FEAT_HDMI_AUDIO_USE_MCLK);
	} else {
		core.aud_par_busclk = (((128 * 31) - 1) << 8);
		core.cts_mode = HDMI_AUDIO_CTS_MODE_HW;
		core.use_mclk = true;
	}

	if (core.use_mclk)
		core.mclk_mode = HDMI_AUDIO_MCLK_128FS;

	/* Audio channels settings */
	channel_count = (audio->cea->db1_ct_cc &
			 CEA861_AUDIO_INFOFRAME_DB1CC) + 1;

	switch (channel_count) {
	case 2:
		audio_format.active_chnnls_msk = 0x03;
		break;
	case 3:
		audio_format.active_chnnls_msk = 0x07;
		break;
	case 4:
		audio_format.active_chnnls_msk = 0x0f;
		break;
	case 5:
		audio_format.active_chnnls_msk = 0x1f;
		break;
	case 6:
		audio_format.active_chnnls_msk = 0x3f;
		break;
	case 7:
		audio_format.active_chnnls_msk = 0x7f;
		break;
	case 8:
		audio_format.active_chnnls_msk = 0xff;
		break;
	default:
		return -EINVAL;
	}

	/*
	 * the HDMI IP needs to enable four stereo channels when transmitting
	 * more than 2 audio channels
	 */
	if (channel_count == 2) {
		audio_format.stereo_channels = HDMI_AUDIO_STEREO_ONECHANNEL;
		core.i2s_cfg.active_sds = HDMI_AUDIO_I2S_SD0_EN;
		core.layout = HDMI_AUDIO_LAYOUT_2CH;
	} else {
		audio_format.stereo_channels = HDMI_AUDIO_STEREO_FOURCHANNELS;
		core.i2s_cfg.active_sds = HDMI_AUDIO_I2S_SD0_EN |
				HDMI_AUDIO_I2S_SD1_EN | HDMI_AUDIO_I2S_SD2_EN |
				HDMI_AUDIO_I2S_SD3_EN;
		core.layout = HDMI_AUDIO_LAYOUT_8CH;
	}

	core.en_spdif = false;
	/* use sample frequency from channel status word */
	core.fs_override = true;
	/* enable ACR packets */
	core.en_acr_pkt = true;
	/* disable direct streaming digital audio */
	core.en_dsd_audio = false;
	/* use parallel audio interface */
	core.en_parallel_aud_input = true;

	/* DMA settings */
	if (word_length_16b)
		audio_dma.transfer_size = 0x10;
	else
		audio_dma.transfer_size = 0x20;
	audio_dma.block_size = 0xC0;
	audio_dma.mode = HDMI_AUDIO_TRANSF_DMA;
	audio_dma.fifo_threshold = 0x20; /* in number of samples */

	/* audio FIFO format settings */
	if (word_length_16b) {
		audio_format.samples_per_word = HDMI_AUDIO_ONEWORD_TWOSAMPLES;
		audio_format.sample_size = HDMI_AUDIO_SAMPLE_16BITS;
		audio_format.justification = HDMI_AUDIO_JUSTIFY_LEFT;
	} else {
		audio_format.samples_per_word = HDMI_AUDIO_ONEWORD_ONESAMPLE;
		audio_format.sample_size = HDMI_AUDIO_SAMPLE_24BITS;
		audio_format.justification = HDMI_AUDIO_JUSTIFY_RIGHT;
	}
	audio_format.type = HDMI_AUDIO_TYPE_LPCM;
	audio_format.sample_order = HDMI_AUDIO_SAMPLE_LEFT_FIRST;
	/* disable start/stop signals of IEC 60958 blocks */
	audio_format.en_sig_blk_strt_end = HDMI_AUDIO_BLOCK_SIG_STARTEND_ON;

	/* configure DMA and audio FIFO format*/
	ti_hdmi_4xxx_wp_audio_config_dma(ip_data, &audio_dma);
	ti_hdmi_4xxx_wp_audio_config_format(ip_data, &audio_format);

	/* configure the core*/
	ti_hdmi_4xxx_core_audio_config(ip_data, &core);

	/* configure CEA 861 audio infoframe*/
	ti_hdmi_4xxx_core_audio_infoframe_cfg(ip_data, audio->cea);

	return 0;
}

int ti_hdmi_4xxx_wp_audio_enable(struct hdmi_ip_data *ip_data)
{
	REG_FLD_MOD(hdmi_wp_base(ip_data),
		    HDMI_WP_AUDIO_CTRL, true, 31, 31);
	return 0;
}

void ti_hdmi_4xxx_wp_audio_disable(struct hdmi_ip_data *ip_data)
{
	REG_FLD_MOD(hdmi_wp_base(ip_data),
		    HDMI_WP_AUDIO_CTRL, false, 31, 31);
}

int ti_hdmi_4xxx_audio_start(struct hdmi_ip_data *ip_data)
{
	REG_FLD_MOD(hdmi_av_base(ip_data),
		    HDMI_CORE_AV_AUD_MODE, true, 0, 0);
	REG_FLD_MOD(hdmi_wp_base(ip_data),
		    HDMI_WP_AUDIO_CTRL, true, 30, 30);
	return 0;
}

void ti_hdmi_4xxx_audio_stop(struct hdmi_ip_data *ip_data)
{
	REG_FLD_MOD(hdmi_av_base(ip_data),
		    HDMI_CORE_AV_AUD_MODE, false, 0, 0);
	REG_FLD_MOD(hdmi_wp_base(ip_data),
		    HDMI_WP_AUDIO_CTRL, false, 30, 30);
}
#endif