1 files changed, 768 insertions, 0 deletions
diff --git a/sys/arm/freescale/imx/imx6_hdmi.c b/sys/arm/freescale/imx/imx6_hdmi.c
new file mode 100644
index 0000000..c6e7fe4
--- /dev/null
+++ b/sys/arm/freescale/imx/imx6_hdmi.c
@@ -0,0 +1,768 @@
+/*-
+ * Copyright (c) 2015 Oleksandr Tymoshenko <gonzo@freebsd.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*
+ * HDMI core module
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/bus.h>
+#include <sys/rman.h>
+
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <machine/bus.h>
+
+#include <dev/videomode/videomode.h>
+#include <dev/videomode/edidvar.h>
+
+#include <dev/iicbus/iicbus.h>
+#include <dev/iicbus/iiconf.h>
+
+#include <arm/freescale/imx/imx_ccmvar.h>
+#include <arm/freescale/imx/imx_iomuxvar.h>
+#include <arm/freescale/imx/imx_iomuxreg.h>
+#include <arm/freescale/imx/imx6_hdmireg.h>
+
+#include "hdmi_if.h"
+
+#define	I2C_DDC_ADDR	(0x50 << 1)
+#define	EDID_LENGTH	0x80
+
+struct imx_hdmi_softc {
+	device_t		sc_dev;
+	struct resource		*sc_mem_res;
+	int			sc_mem_rid;
+	struct intr_config_hook	sc_mode_hook;
+	struct videomode	sc_mode;
+	uint8_t			*sc_edid;
+	uint8_t			sc_edid_len;
+	phandle_t		sc_i2c_xref;
+};
+
+static struct ofw_compat_data compat_data[] = {
+	{"fsl,imx6dl-hdmi", 1},
+	{"fsl,imx6q-hdmi",  1},
+	{NULL,	            0}
+};
+
+static inline uint8_t
+RD1(struct imx_hdmi_softc *sc, bus_size_t off)
+{
+
+	return (bus_read_1(sc->sc_mem_res, off));
+}
+
+static inline void
+WR1(struct imx_hdmi_softc *sc, bus_size_t off, uint8_t val)
+{
+
+	bus_write_1(sc->sc_mem_res, off, val);
+}
+
+static void
+imx_hdmi_phy_wait_i2c_done(struct imx_hdmi_softc *sc, int msec)
+{
+	uint8_t val;
+
+	val = RD1(sc, HDMI_IH_I2CMPHY_STAT0) &
+	    (HDMI_IH_I2CMPHY_STAT0_DONE | HDMI_IH_I2CMPHY_STAT0_ERROR);
+	while (val == 0) {
+		pause("HDMI_PHY", hz/100);
+		msec -= 10;
+		if (msec <= 0)
+			return;
+		val = RD1(sc, HDMI_IH_I2CMPHY_STAT0) &
+		    (HDMI_IH_I2CMPHY_STAT0_DONE | HDMI_IH_I2CMPHY_STAT0_ERROR);
+	}
+}
+
+static void
+imx_hdmi_phy_i2c_write(struct imx_hdmi_softc *sc, unsigned short data,
+    unsigned char addr)
+{
+
+	/* clear DONE and ERROR flags */
+	WR1(sc, HDMI_IH_I2CMPHY_STAT0,
+	    HDMI_IH_I2CMPHY_STAT0_DONE | HDMI_IH_I2CMPHY_STAT0_ERROR);
+	WR1(sc, HDMI_PHY_I2CM_ADDRESS_ADDR, addr);
+	WR1(sc, HDMI_PHY_I2CM_DATAO_1_ADDR, ((data >> 8) & 0xff));
+	WR1(sc, HDMI_PHY_I2CM_DATAO_0_ADDR, ((data >> 0) & 0xff));
+	WR1(sc, HDMI_PHY_I2CM_OPERATION_ADDR, HDMI_PHY_I2CM_OPERATION_ADDR_WRITE);
+	imx_hdmi_phy_wait_i2c_done(sc, 1000);
+}
+
+static void
+imx_hdmi_disable_overflow_interrupts(struct imx_hdmi_softc *sc)
+{
+	WR1(sc, HDMI_IH_MUTE_FC_STAT2, HDMI_IH_MUTE_FC_STAT2_OVERFLOW_MASK);
+	WR1(sc, HDMI_FC_MASK2,
+	    HDMI_FC_MASK2_LOW_PRI | HDMI_FC_MASK2_HIGH_PRI);
+}
+
+static void
+imx_hdmi_av_composer(struct imx_hdmi_softc *sc)
+{
+	uint8_t inv_val;
+	int is_dvi;
+	int hblank, vblank, hsync_len, hbp, vbp;
+
+	/* Set up HDMI_FC_INVIDCONF */
+	inv_val = ((sc->sc_mode.flags & VID_NVSYNC) ?
+		HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_LOW :
+		HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_HIGH);
+
+	inv_val |= ((sc->sc_mode.flags & VID_NHSYNC) ?
+		HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_LOW :
+		HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_HIGH);
+
+	inv_val |= HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_HIGH;
+
+	inv_val |= ((sc->sc_mode.flags & VID_INTERLACE) ?
+			HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_HIGH :
+			HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_LOW);
+
+	inv_val |= ((sc->sc_mode.flags & VID_INTERLACE) ?
+		HDMI_FC_INVIDCONF_IN_I_P_INTERLACED :
+		HDMI_FC_INVIDCONF_IN_I_P_PROGRESSIVE);
+
+	/* TODO: implement HDMI part */
+	is_dvi = 1;
+	inv_val |= (is_dvi ?
+		HDMI_FC_INVIDCONF_DVI_MODEZ_DVI_MODE :
+		HDMI_FC_INVIDCONF_DVI_MODEZ_HDMI_MODE);
+
+	WR1(sc, HDMI_FC_INVIDCONF, inv_val);
+
+	/* Set up horizontal active pixel region width */
+	WR1(sc, HDMI_FC_INHACTV1, sc->sc_mode.hdisplay >> 8);
+	WR1(sc, HDMI_FC_INHACTV0, sc->sc_mode.hdisplay);
+
+	/* Set up vertical blanking pixel region width */
+	WR1(sc, HDMI_FC_INVACTV1, sc->sc_mode.vdisplay >> 8);
+	WR1(sc, HDMI_FC_INVACTV0, sc->sc_mode.vdisplay);
+
+	/* Set up horizontal blanking pixel region width */
+	hblank = sc->sc_mode.htotal - sc->sc_mode.hdisplay;
+	WR1(sc, HDMI_FC_INHBLANK1, hblank >> 8);
+	WR1(sc, HDMI_FC_INHBLANK0, hblank);
+
+	/* Set up vertical blanking pixel region width */
+	vblank = sc->sc_mode.vtotal - sc->sc_mode.vdisplay;
+	WR1(sc, HDMI_FC_INVBLANK, vblank);
+
+	/* Set up HSYNC active edge delay width (in pixel clks) */
+	hbp = sc->sc_mode.htotal - sc->sc_mode.hsync_end;
+	WR1(sc, HDMI_FC_HSYNCINDELAY1, hbp >> 8);
+	WR1(sc, HDMI_FC_HSYNCINDELAY0, hbp);
+
+	/* Set up VSYNC active edge delay (in pixel clks) */
+	vbp = sc->sc_mode.vtotal - sc->sc_mode.vsync_end;
+	WR1(sc, HDMI_FC_VSYNCINDELAY, vbp);
+
+	hsync_len = (sc->sc_mode.hsync_end - sc->sc_mode.hsync_start);
+	/* Set up HSYNC active pulse width (in pixel clks) */
+	WR1(sc, HDMI_FC_HSYNCINWIDTH1, hsync_len >> 8);
+	WR1(sc, HDMI_FC_HSYNCINWIDTH0, hsync_len);
+
+	/* Set up VSYNC active edge delay (in pixel clks) */
+	WR1(sc, HDMI_FC_VSYNCINWIDTH, (sc->sc_mode.vsync_end - sc->sc_mode.vsync_start));
+}
+
+static void
+imx_hdmi_phy_enable_power(struct imx_hdmi_softc *sc, uint8_t enable)
+{
+	uint8_t reg;
+
+	reg = RD1(sc, HDMI_PHY_CONF0);
+	reg &= ~HDMI_PHY_CONF0_PDZ_MASK;
+	reg |= (enable << HDMI_PHY_CONF0_PDZ_OFFSET);
+	WR1(sc, HDMI_PHY_CONF0, reg);
+}
+
+static void
+imx_hdmi_phy_enable_tmds(struct imx_hdmi_softc *sc, uint8_t enable)
+{
+	uint8_t reg;
+
+	reg = RD1(sc, HDMI_PHY_CONF0);
+	reg &= ~HDMI_PHY_CONF0_ENTMDS_MASK;
+	reg |= (enable << HDMI_PHY_CONF0_ENTMDS_OFFSET);
+	WR1(sc, HDMI_PHY_CONF0, reg);
+}
+
+static void
+imx_hdmi_phy_gen2_pddq(struct imx_hdmi_softc *sc, uint8_t enable)
+{
+	uint8_t reg;
+
+	reg = RD1(sc, HDMI_PHY_CONF0);
+	reg &= ~HDMI_PHY_CONF0_GEN2_PDDQ_MASK;
+	reg |= (enable << HDMI_PHY_CONF0_GEN2_PDDQ_OFFSET);
+	WR1(sc, HDMI_PHY_CONF0, reg);
+}
+
+static void
+imx_hdmi_phy_gen2_txpwron(struct imx_hdmi_softc *sc, uint8_t enable)
+{
+	uint8_t reg;
+
+	reg = RD1(sc, HDMI_PHY_CONF0);
+	reg &= ~HDMI_PHY_CONF0_GEN2_TXPWRON_MASK;
+	reg |= (enable << HDMI_PHY_CONF0_GEN2_TXPWRON_OFFSET);
+	WR1(sc, HDMI_PHY_CONF0, reg);
+}
+
+static void
+imx_hdmi_phy_sel_data_en_pol(struct imx_hdmi_softc *sc, uint8_t enable)
+{
+	uint8_t reg;
+
+	reg = RD1(sc, HDMI_PHY_CONF0);
+	reg &= ~HDMI_PHY_CONF0_SELDATAENPOL_MASK;
+	reg |= (enable << HDMI_PHY_CONF0_SELDATAENPOL_OFFSET);
+	WR1(sc, HDMI_PHY_CONF0, reg);
+}
+
+static void
+imx_hdmi_phy_sel_interface_control(struct imx_hdmi_softc *sc, uint8_t enable)
+{
+	uint8_t reg;
+
+	reg = RD1(sc, HDMI_PHY_CONF0);
+	reg &= ~HDMI_PHY_CONF0_SELDIPIF_MASK;
+	reg |= (enable << HDMI_PHY_CONF0_SELDIPIF_OFFSET);
+	WR1(sc, HDMI_PHY_CONF0, reg);
+}
+
+static inline void
+imx_hdmi_phy_test_clear(struct imx_hdmi_softc *sc, unsigned char bit)
+{
+	uint8_t val;
+
+	val = RD1(sc, HDMI_PHY_TST0);
+	val &= ~HDMI_PHY_TST0_TSTCLR_MASK;
+	val |= (bit << HDMI_PHY_TST0_TSTCLR_OFFSET) &
+		HDMI_PHY_TST0_TSTCLR_MASK;
+	WR1(sc, HDMI_PHY_TST0, val);
+}
+
+static void
+imx_hdmi_clear_overflow(struct imx_hdmi_softc *sc)
+{
+	int count;
+	uint8_t val;
+
+	/* TMDS software reset */
+	WR1(sc, HDMI_MC_SWRSTZ, (uint8_t)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ);
+
+	val = RD1(sc, HDMI_FC_INVIDCONF);
+
+	for (count = 0 ; count < 5 ; count++)
+		WR1(sc, HDMI_FC_INVIDCONF, val);
+}
+
+static int
+imx_hdmi_phy_configure(struct imx_hdmi_softc *sc)
+{
+	uint8_t val;
+	uint8_t msec;
+
+	WR1(sc, HDMI_MC_FLOWCTRL, HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_BYPASS);
+
+	/* gen2 tx power off */
+	imx_hdmi_phy_gen2_txpwron(sc, 0);
+
+	/* gen2 pddq */
+	imx_hdmi_phy_gen2_pddq(sc, 1);
+
+	/* PHY reset */
+	WR1(sc, HDMI_MC_PHYRSTZ, HDMI_MC_PHYRSTZ_DEASSERT);
+	WR1(sc, HDMI_MC_PHYRSTZ, HDMI_MC_PHYRSTZ_ASSERT);
+
+	WR1(sc, HDMI_MC_HEACPHY_RST, HDMI_MC_HEACPHY_RST_ASSERT);
+
+	imx_hdmi_phy_test_clear(sc, 1);
+	WR1(sc, HDMI_PHY_I2CM_SLAVE_ADDR, HDMI_PHY_I2CM_SLAVE_ADDR_PHY_GEN2);
+	imx_hdmi_phy_test_clear(sc, 0);
+
+	/*
+	 * Following initialization are for 8bit per color case
+	 */
+
+	/*
+	 * PLL/MPLL config, see section 24.7.22 in TRM
+	 *  config, see section 24.7.22
+	 */
+	if (sc->sc_mode.dot_clock*1000 <= 45250000) {
+		imx_hdmi_phy_i2c_write(sc, CPCE_CTRL_45_25, HDMI_PHY_I2C_CPCE_CTRL);
+		imx_hdmi_phy_i2c_write(sc, GMPCTRL_45_25, HDMI_PHY_I2C_GMPCTRL);
+	} else if (sc->sc_mode.dot_clock*1000 <= 92500000) {
+		imx_hdmi_phy_i2c_write(sc, CPCE_CTRL_92_50, HDMI_PHY_I2C_CPCE_CTRL);
+		imx_hdmi_phy_i2c_write(sc, GMPCTRL_92_50, HDMI_PHY_I2C_GMPCTRL);
+	} else if (sc->sc_mode.dot_clock*1000 <= 185000000) {
+		imx_hdmi_phy_i2c_write(sc, CPCE_CTRL_185, HDMI_PHY_I2C_CPCE_CTRL);
+		imx_hdmi_phy_i2c_write(sc, GMPCTRL_185, HDMI_PHY_I2C_GMPCTRL);
+	} else {
+		imx_hdmi_phy_i2c_write(sc, CPCE_CTRL_370, HDMI_PHY_I2C_CPCE_CTRL);
+		imx_hdmi_phy_i2c_write(sc, GMPCTRL_370, HDMI_PHY_I2C_GMPCTRL);
+	}
+
+	/*
+	 * Values described in TRM section 34.9.2 PLL/MPLL Generic
+	 *    Configuration Settings. Table 34-23.
+	 */
+	if (sc->sc_mode.dot_clock*1000 <= 54000000) {
+		imx_hdmi_phy_i2c_write(sc, 0x091c, HDMI_PHY_I2C_CURRCTRL);
+	} else if (sc->sc_mode.dot_clock*1000 <= 58400000) {
+		imx_hdmi_phy_i2c_write(sc, 0x091c, HDMI_PHY_I2C_CURRCTRL);
+	} else if (sc->sc_mode.dot_clock*1000 <= 72000000) {
+		imx_hdmi_phy_i2c_write(sc, 0x06dc, HDMI_PHY_I2C_CURRCTRL);
+	} else if (sc->sc_mode.dot_clock*1000 <= 74250000) {
+		imx_hdmi_phy_i2c_write(sc, 0x06dc, HDMI_PHY_I2C_CURRCTRL);
+	} else if (sc->sc_mode.dot_clock*1000 <= 118800000) {
+		imx_hdmi_phy_i2c_write(sc, 0x091c, HDMI_PHY_I2C_CURRCTRL);
+	} else if (sc->sc_mode.dot_clock*1000 <= 216000000) {
+		imx_hdmi_phy_i2c_write(sc, 0x06dc, HDMI_PHY_I2C_CURRCTRL);
+	} else {
+		panic("Unsupported mode\n");
+	}
+
+	imx_hdmi_phy_i2c_write(sc, 0x0000, HDMI_PHY_I2C_PLLPHBYCTRL);
+	imx_hdmi_phy_i2c_write(sc, MSM_CTRL_FB_CLK, HDMI_PHY_I2C_MSM_CTRL);
+	/* RESISTANCE TERM 133 Ohm */
+	imx_hdmi_phy_i2c_write(sc, TXTERM_133, HDMI_PHY_I2C_TXTERM);
+
+	/* REMOVE CLK TERM */
+	imx_hdmi_phy_i2c_write(sc, CKCALCTRL_OVERRIDE, HDMI_PHY_I2C_CKCALCTRL);
+
+	if (sc->sc_mode.dot_clock*1000 > 148500000) {
+		imx_hdmi_phy_i2c_write(sc,CKSYMTXCTRL_OVERRIDE | CKSYMTXCTRL_TX_SYMON |
+		    CKSYMTXCTRL_TX_TRBON | CKSYMTXCTRL_TX_CK_SYMON, HDMI_PHY_I2C_CKSYMTXCTRL); 
+		imx_hdmi_phy_i2c_write(sc, VLEVCTRL_TX_LVL(9) | VLEVCTRL_CK_LVL(9),
+		    HDMI_PHY_I2C_VLEVCTRL);
+	} else {
+		imx_hdmi_phy_i2c_write(sc,CKSYMTXCTRL_OVERRIDE | CKSYMTXCTRL_TX_SYMON |
+		    CKSYMTXCTRL_TX_TRAON | CKSYMTXCTRL_TX_CK_SYMON, HDMI_PHY_I2C_CKSYMTXCTRL); 
+		imx_hdmi_phy_i2c_write(sc, VLEVCTRL_TX_LVL(13) | VLEVCTRL_CK_LVL(13),
+		    HDMI_PHY_I2C_VLEVCTRL);
+	}
+
+	imx_hdmi_phy_enable_power(sc, 1);
+
+	/* toggle TMDS enable */
+	imx_hdmi_phy_enable_tmds(sc, 0);
+	imx_hdmi_phy_enable_tmds(sc, 1);
+
+	/* gen2 tx power on */
+	imx_hdmi_phy_gen2_txpwron(sc, 1);
+	imx_hdmi_phy_gen2_pddq(sc, 0);
+
+	/*Wait for PHY PLL lock */
+	msec = 4;
+	val = RD1(sc, HDMI_PHY_STAT0) & HDMI_PHY_TX_PHY_LOCK;
+	while (val == 0) {
+		DELAY(1000);
+		if (msec-- == 0) {
+			device_printf(sc->sc_dev, "PHY PLL not locked\n");
+			return (-1);
+		}
+		val = RD1(sc, HDMI_PHY_STAT0) & HDMI_PHY_TX_PHY_LOCK;
+	}
+
+	return true;
+}
+
+static void
+imx_hdmi_phy_init(struct imx_hdmi_softc *sc)
+{
+	int i;
+
+	/* HDMI Phy spec says to do the phy initialization sequence twice */
+	for (i = 0 ; i < 2 ; i++) {
+		imx_hdmi_phy_sel_data_en_pol(sc, 1);
+		imx_hdmi_phy_sel_interface_control(sc, 0);
+		imx_hdmi_phy_enable_tmds(sc, 0);
+		imx_hdmi_phy_enable_power(sc, 0);
+
+		/* Enable CSC */
+		imx_hdmi_phy_configure(sc);
+	}
+}
+
+static void
+imx_hdmi_enable_video_path(struct imx_hdmi_softc *sc)
+{
+	uint8_t clkdis;
+
+	/*
+	 * Control period timing
+	 * Values are minimal according to HDMI spec 1.4a
+	 */
+	WR1(sc, HDMI_FC_CTRLDUR, 12);
+	WR1(sc, HDMI_FC_EXCTRLDUR, 32);
+	WR1(sc, HDMI_FC_EXCTRLSPAC, 1);
+
+	/*
+	 * Bits to fill data lines not used to transmit preamble
+	 * for channels 0, 1, and 2 respectively
+	 */
+	WR1(sc, HDMI_FC_CH0PREAM, 0x0B);
+	WR1(sc, HDMI_FC_CH1PREAM, 0x16);
+	WR1(sc, HDMI_FC_CH2PREAM, 0x21);
+
+	/* Save CEC clock */
+	clkdis = RD1(sc, HDMI_MC_CLKDIS) & HDMI_MC_CLKDIS_CECCLK_DISABLE;
+	clkdis |= ~HDMI_MC_CLKDIS_CECCLK_DISABLE;
+
+	/* Enable pixel clock and tmds data path */
+	clkdis &= ~HDMI_MC_CLKDIS_PIXELCLK_DISABLE;
+	WR1(sc, HDMI_MC_CLKDIS, clkdis);
+
+	clkdis &= ~HDMI_MC_CLKDIS_TMDSCLK_DISABLE;
+	WR1(sc, HDMI_MC_CLKDIS, clkdis);
+}
+
+static void
+imx_hdmi_video_packetize(struct imx_hdmi_softc *sc)
+{
+	unsigned int color_depth = 0;
+	unsigned int remap_size = HDMI_VP_REMAP_YCC422_16BIT;
+	unsigned int output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_PP;
+	uint8_t val;
+
+	output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS;
+	color_depth = 0;
+
+	/* set the packetizer registers */
+	val = ((color_depth << HDMI_VP_PR_CD_COLOR_DEPTH_OFFSET) &
+		HDMI_VP_PR_CD_COLOR_DEPTH_MASK);
+	WR1(sc, HDMI_VP_PR_CD, val);
+
+	val = RD1(sc, HDMI_VP_STUFF);
+	val &= ~HDMI_VP_STUFF_PR_STUFFING_MASK;
+	val |= HDMI_VP_STUFF_PR_STUFFING_STUFFING_MODE;
+	WR1(sc, HDMI_VP_STUFF, val);
+
+	val = RD1(sc, HDMI_VP_CONF);
+	val &= ~(HDMI_VP_CONF_PR_EN_MASK |
+		HDMI_VP_CONF_BYPASS_SELECT_MASK);
+	val |= HDMI_VP_CONF_PR_EN_DISABLE |
+		HDMI_VP_CONF_BYPASS_SELECT_VID_PACKETIZER;
+	WR1(sc, HDMI_VP_CONF, val);
+
+	val = RD1(sc, HDMI_VP_STUFF);
+	val &= ~HDMI_VP_STUFF_IDEFAULT_PHASE_MASK;
+	val |= 1 << HDMI_VP_STUFF_IDEFAULT_PHASE_OFFSET;
+	WR1(sc, HDMI_VP_STUFF, val);
+
+	WR1(sc, HDMI_VP_REMAP, remap_size);
+
+	if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_PP) {
+		val = RD1(sc, HDMI_VP_CONF);
+		val &= ~(HDMI_VP_CONF_BYPASS_EN_MASK |
+			HDMI_VP_CONF_PP_EN_ENMASK |
+			HDMI_VP_CONF_YCC422_EN_MASK);
+		val |= HDMI_VP_CONF_BYPASS_EN_DISABLE |
+			HDMI_VP_CONF_PP_EN_ENABLE |
+			HDMI_VP_CONF_YCC422_EN_DISABLE;
+		WR1(sc, HDMI_VP_CONF, val);
+	} else if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_YCC422) {
+		val = RD1(sc, HDMI_VP_CONF);
+		val &= ~(HDMI_VP_CONF_BYPASS_EN_MASK |
+			HDMI_VP_CONF_PP_EN_ENMASK |
+			HDMI_VP_CONF_YCC422_EN_MASK);
+		val |= HDMI_VP_CONF_BYPASS_EN_DISABLE |
+			HDMI_VP_CONF_PP_EN_DISABLE |
+			HDMI_VP_CONF_YCC422_EN_ENABLE;
+		WR1(sc, HDMI_VP_CONF, val);
+	} else if (output_select == HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS) {
+		val = RD1(sc, HDMI_VP_CONF);
+		val &= ~(HDMI_VP_CONF_BYPASS_EN_MASK |
+			HDMI_VP_CONF_PP_EN_ENMASK |
+			HDMI_VP_CONF_YCC422_EN_MASK);
+		val |= HDMI_VP_CONF_BYPASS_EN_ENABLE |
+			HDMI_VP_CONF_PP_EN_DISABLE |
+			HDMI_VP_CONF_YCC422_EN_DISABLE;
+		WR1(sc, HDMI_VP_CONF, val);
+	} else {
+		return;
+	}
+
+	val = RD1(sc, HDMI_VP_STUFF);
+	val &= ~(HDMI_VP_STUFF_PP_STUFFING_MASK |
+		HDMI_VP_STUFF_YCC422_STUFFING_MASK);
+	val |= HDMI_VP_STUFF_PP_STUFFING_STUFFING_MODE |
+		HDMI_VP_STUFF_YCC422_STUFFING_STUFFING_MODE;
+	WR1(sc, HDMI_VP_STUFF, val);
+
+	val = RD1(sc, HDMI_VP_CONF);
+	val &= ~HDMI_VP_CONF_OUTPUT_SELECTOR_MASK;
+	val |= output_select;
+	WR1(sc, HDMI_VP_CONF, val);
+}
+
+static void
+imx_hdmi_video_sample(struct imx_hdmi_softc *sc)
+{
+	int color_format;
+	uint8_t val;
+
+	color_format = 0x01;
+	val = HDMI_TX_INVID0_INTERNAL_DE_GENERATOR_DISABLE |
+		((color_format << HDMI_TX_INVID0_VIDEO_MAPPING_OFFSET) &
+		HDMI_TX_INVID0_VIDEO_MAPPING_MASK);
+	WR1(sc, HDMI_TX_INVID0, val);
+
+	/* Enable TX stuffing: When DE is inactive, fix the output data to 0 */
+	val = HDMI_TX_INSTUFFING_BDBDATA_STUFFING_ENABLE |
+		HDMI_TX_INSTUFFING_RCRDATA_STUFFING_ENABLE |
+		HDMI_TX_INSTUFFING_GYDATA_STUFFING_ENABLE;
+	WR1(sc, HDMI_TX_INSTUFFING, val);
+	WR1(sc, HDMI_TX_GYDATA0, 0x0);
+	WR1(sc, HDMI_TX_GYDATA1, 0x0);
+	WR1(sc, HDMI_TX_RCRDATA0, 0x0);
+	WR1(sc, HDMI_TX_RCRDATA1, 0x0);
+	WR1(sc, HDMI_TX_BCBDATA0, 0x0);
+	WR1(sc, HDMI_TX_BCBDATA1, 0x0);
+}
+
+static int
+imx_hdmi_set_mode(struct imx_hdmi_softc *sc)
+{
+
+	imx_hdmi_disable_overflow_interrupts(sc);
+	imx_hdmi_av_composer(sc);
+	imx_hdmi_phy_init(sc);
+	imx_hdmi_enable_video_path(sc);
+	/* TODO: AVI infoframes */
+	imx_hdmi_video_packetize(sc);
+	/* TODO:  imx_hdmi_video_csc(sc); */
+	imx_hdmi_video_sample(sc);
+	imx_hdmi_clear_overflow(sc);
+
+	return (0);
+}
+
+static int
+hdmi_edid_read(struct imx_hdmi_softc *sc, uint8_t **edid, uint32_t *edid_len)
+{
+	device_t i2c_dev;
+	int result;
+	uint8_t addr = 0;
+	struct iic_msg msg[] = {
+		{ 0, IIC_M_WR, 1, &addr },
+		{ 0, IIC_M_RD, EDID_LENGTH, NULL}
+	};
+
+	*edid = NULL;
+	*edid_len = 0;
+
+	if (sc->sc_i2c_xref == 0)
+		return (ENXIO);
+
+	i2c_dev = OF_device_from_xref(sc->sc_i2c_xref);
+	if (!i2c_dev) {
+		device_printf(sc->sc_dev,
+		    "no actual device for \"ddc-i2c-bus\" property (handle=%x)\n", sc->sc_i2c_xref);
+		return (ENXIO);
+	}
+
+	device_printf(sc->sc_dev, "reading EDID from %s, addr %02x\n",
+	    device_get_nameunit(i2c_dev), I2C_DDC_ADDR/2);
+
+	msg[0].slave = I2C_DDC_ADDR;
+	msg[1].slave = I2C_DDC_ADDR;
+	msg[1].buf = sc->sc_edid;
+
+	result = iicbus_request_bus(i2c_dev, sc->sc_dev, IIC_INTRWAIT);
+
+	if (result) {
+		device_printf(sc->sc_dev, "failed to request i2c bus: %d\n", result);
+		return (result);
+	}
+
+	result = iicbus_transfer(i2c_dev, msg, 2);
+	iicbus_release_bus(i2c_dev, sc->sc_dev);
+
+	if (result) {
+		device_printf(sc->sc_dev, "i2c transfer failed: %d\n", result);
+		return (result);
+	} else {
+		*edid_len = sc->sc_edid_len;
+		*edid = sc->sc_edid;
+	}
+
+	return (result);
+}
+
+static void
+imx_hdmi_detect_cable(void *arg)
+{
+	struct imx_hdmi_softc *sc;
+
+	sc = arg;
+	EVENTHANDLER_INVOKE(hdmi_event, sc->sc_dev, HDMI_EVENT_CONNECTED);
+	/* Finished with the interrupt hook */
+	config_intrhook_disestablish(&sc->sc_mode_hook);
+}
+
+static int
+imx_hdmi_detach(device_t dev)
+{
+	struct imx_hdmi_softc *sc;
+
+	sc = device_get_softc(dev);
+
+	if (sc->sc_mem_res != NULL)
+		bus_release_resource(dev, SYS_RES_MEMORY,
+		    sc->sc_mem_rid, sc->sc_mem_res);
+
+	return (0);
+}
+
+static int
+imx_hdmi_attach(device_t dev)
+{
+	struct imx_hdmi_softc *sc;
+	int err;
+	uint32_t gpr3;
+	phandle_t node, i2c_xref;
+
+	sc = device_get_softc(dev);
+	sc->sc_dev = dev;
+	err = 0;
+
+	/* Allocate memory resources. */
+	sc->sc_mem_rid = 0;
+	sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->sc_mem_rid,
+	    RF_ACTIVE);
+	if (sc->sc_mem_res == NULL) {
+		device_printf(dev, "Cannot allocate memory resources\n");
+		err = ENXIO;
+		goto out;
+	}
+
+	sc->sc_mode_hook.ich_func = imx_hdmi_detect_cable;
+	sc->sc_mode_hook.ich_arg = sc;
+
+	if (config_intrhook_establish(&sc->sc_mode_hook) != 0) {
+		err = ENOMEM;
+		goto out;
+	}
+
+	node = ofw_bus_get_node(dev);
+	if (OF_getencprop(node, "ddc-i2c-bus", &i2c_xref, sizeof(i2c_xref)) == -1)
+		sc->sc_i2c_xref = 0;
+	else
+		sc->sc_i2c_xref = i2c_xref;
+
+	sc->sc_edid = malloc(EDID_LENGTH, M_DEVBUF, M_WAITOK | M_ZERO);
+	sc->sc_edid_len = EDID_LENGTH;
+
+	imx_ccm_hdmi_enable();
+
+	device_printf(sc->sc_dev, "HDMI controller %02x:%02x:%02x:%02x\n",
+	    RD1(sc, HDMI_DESIGN_ID), RD1(sc, HDMI_REVISION_ID),
+	    RD1(sc, HDMI_PRODUCT_ID0), RD1(sc, HDMI_PRODUCT_ID1));
+
+
+	gpr3 = imx_iomux_gpr_get(IOMUXC_GPR3);
+	gpr3 &= ~(IOMUXC_GPR3_HDMI_MASK);
+	gpr3 |= IOMUXC_GPR3_HDMI_IPU1_DI0;
+	imx_iomux_gpr_set(IOMUXC_GPR3, gpr3);
+
+	WR1(sc, HDMI_PHY_POL0, HDMI_PHY_HPD);
+	WR1(sc, HDMI_IH_PHY_STAT0, HDMI_IH_PHY_STAT0_HPD);
+
+out:
+
+	if (err != 0)
+		imx_hdmi_detach(dev);
+
+	return (err);
+}
+
+static int
+imx_hdmi_probe(device_t dev)
+{
+
+	if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
+		return (ENXIO);
+
+	device_set_desc(dev, "Freescale i.MX6 HDMI core");
+
+	return (BUS_PROBE_DEFAULT);
+}
+
+static int
+imx_hdmi_get_edid(device_t dev, uint8_t **edid, uint32_t *edid_len)
+{
+
+	return (hdmi_edid_read(device_get_softc(dev), edid, edid_len));
+}
+
+static int
+imx_hdmi_set_videomode(device_t dev, const struct videomode *mode)
+{
+	struct imx_hdmi_softc *sc;
+
+	sc = device_get_softc(dev);
+	memcpy(&sc->sc_mode, mode, sizeof(*mode));
+	imx_hdmi_set_mode(sc);
+
+	return (0);
+}
+
+static device_method_t imx_hdmi_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe,  imx_hdmi_probe),
+	DEVMETHOD(device_attach, imx_hdmi_attach),
+	DEVMETHOD(device_detach, imx_hdmi_detach),
+
+	/* HDMI methods */
+	DEVMETHOD(hdmi_get_edid,	imx_hdmi_get_edid),
+	DEVMETHOD(hdmi_set_videomode,	imx_hdmi_set_videomode),
+
+	DEVMETHOD_END
+};
+
+static driver_t imx_hdmi_driver = {
+	"hdmi",
+	imx_hdmi_methods,
+	sizeof(struct imx_hdmi_softc)
+};
+
+static devclass_t imx_hdmi_devclass;
+
+DRIVER_MODULE(hdmi, simplebus, imx_hdmi_driver, imx_hdmi_devclass, 0, 0);