--- /dev/null
+/*
+ * Copyright (c) 2015 Google, Inc
+ * Copyright 2014 Rockchip Inc.
+ * Copyright 2017 Jernej Skrabec <jernej.skrabec@siol.net>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <fdtdec.h>
+#include <asm/io.h>
+#include "dw_hdmi.h"
+
+struct tmds_n_cts {
+ u32 tmds;
+ u32 cts;
+ u32 n;
+};
+
+static const struct tmds_n_cts n_cts_table[] = {
+ {
+ .tmds = 25175000, .n = 6144, .cts = 25175,
+ }, {
+ .tmds = 25200000, .n = 6144, .cts = 25200,
+ }, {
+ .tmds = 27000000, .n = 6144, .cts = 27000,
+ }, {
+ .tmds = 27027000, .n = 6144, .cts = 27027,
+ }, {
+ .tmds = 40000000, .n = 6144, .cts = 40000,
+ }, {
+ .tmds = 54000000, .n = 6144, .cts = 54000,
+ }, {
+ .tmds = 54054000, .n = 6144, .cts = 54054,
+ }, {
+ .tmds = 65000000, .n = 6144, .cts = 65000,
+ }, {
+ .tmds = 74176000, .n = 11648, .cts = 140625,
+ }, {
+ .tmds = 74250000, .n = 6144, .cts = 74250,
+ }, {
+ .tmds = 83500000, .n = 6144, .cts = 83500,
+ }, {
+ .tmds = 106500000, .n = 6144, .cts = 106500,
+ }, {
+ .tmds = 108000000, .n = 6144, .cts = 108000,
+ }, {
+ .tmds = 148352000, .n = 5824, .cts = 140625,
+ }, {
+ .tmds = 148500000, .n = 6144, .cts = 148500,
+ }, {
+ .tmds = 297000000, .n = 5120, .cts = 247500,
+ }
+};
+
+static void hdmi_write(struct dw_hdmi *hdmi, u8 val, int offset)
+{
+ switch (hdmi->reg_io_width) {
+ case 1:
+ writeb(val, hdmi->ioaddr + offset);
+ break;
+ case 4:
+ writel(val, hdmi->ioaddr + (offset << 2));
+ break;
+ default:
+ debug("reg_io_width has unsupported width!\n");
+ break;
+ }
+}
+
+static u8 hdmi_read(struct dw_hdmi *hdmi, int offset)
+{
+ switch (hdmi->reg_io_width) {
+ case 1:
+ return readb(hdmi->ioaddr + offset);
+ case 4:
+ return readl(hdmi->ioaddr + (offset << 2));
+ default:
+ debug("reg_io_width has unsupported width!\n");
+ break;
+ }
+
+ return 0;
+}
+
+static void hdmi_mod(struct dw_hdmi *hdmi, unsigned reg, u8 mask, u8 data)
+{
+ u8 val = hdmi_read(hdmi, reg) & ~mask;
+
+ val |= data & mask;
+ hdmi_write(hdmi, val, reg);
+}
+
+static void hdmi_set_clock_regenerator(struct dw_hdmi *hdmi, u32 n, u32 cts)
+{
+ uint cts3;
+ uint n3;
+
+ /* first set ncts_atomic_write (if present) */
+ n3 = HDMI_AUD_N3_NCTS_ATOMIC_WRITE;
+ hdmi_write(hdmi, n3, HDMI_AUD_N3);
+
+ /* set cts_manual (if present) */
+ cts3 = HDMI_AUD_CTS3_CTS_MANUAL;
+
+ cts3 |= HDMI_AUD_CTS3_N_SHIFT_1 << HDMI_AUD_CTS3_N_SHIFT_OFFSET;
+ cts3 |= (cts >> 16) & HDMI_AUD_CTS3_AUDCTS19_16_MASK;
+
+ /* write cts values; cts3 must be written first */
+ hdmi_write(hdmi, cts3, HDMI_AUD_CTS3);
+ hdmi_write(hdmi, (cts >> 8) & 0xff, HDMI_AUD_CTS2);
+ hdmi_write(hdmi, cts & 0xff, HDMI_AUD_CTS1);
+
+ /* write n values; n1 must be written last */
+ n3 |= (n >> 16) & HDMI_AUD_N3_AUDN19_16_MASK;
+ hdmi_write(hdmi, n3, HDMI_AUD_N3);
+ hdmi_write(hdmi, (n >> 8) & 0xff, HDMI_AUD_N2);
+ hdmi_write(hdmi, n & 0xff, HDMI_AUD_N3);
+
+ hdmi_write(hdmi, HDMI_AUD_INPUTCLKFS_128, HDMI_AUD_INPUTCLKFS);
+}
+
+static int hdmi_lookup_n_cts(u32 pixel_clk)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(n_cts_table); i++)
+ if (pixel_clk <= n_cts_table[i].tmds)
+ break;
+
+ if (i >= ARRAY_SIZE(n_cts_table))
+ return -1;
+
+ return i;
+}
+
+static void hdmi_audio_set_samplerate(struct dw_hdmi *hdmi, u32 pixel_clk)
+{
+ u32 clk_n, clk_cts;
+ int index;
+
+ index = hdmi_lookup_n_cts(pixel_clk);
+ if (index == -1) {
+ debug("audio not supported for pixel clk %d\n", pixel_clk);
+ return;
+ }
+
+ clk_n = n_cts_table[index].n;
+ clk_cts = n_cts_table[index].cts;
+ hdmi_set_clock_regenerator(hdmi, clk_n, clk_cts);
+}
+
+/*
+ * this submodule is responsible for the video data synchronization.
+ * for example, for rgb 4:4:4 input, the data map is defined as
+ * pin{47~40} <==> r[7:0]
+ * pin{31~24} <==> g[7:0]
+ * pin{15~8} <==> b[7:0]
+ */
+static void hdmi_video_sample(struct dw_hdmi *hdmi)
+{
+ u32 color_format = 0x01;
+ uint val;
+
+ val = HDMI_TX_INVID0_INTERNAL_DE_GENERATOR_DISABLE |
+ ((color_format << HDMI_TX_INVID0_VIDEO_MAPPING_OFFSET) &
+ HDMI_TX_INVID0_VIDEO_MAPPING_MASK);
+
+ hdmi_write(hdmi, val, HDMI_TX_INVID0);
+
+ /* 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;
+ hdmi_write(hdmi, val, HDMI_TX_INSTUFFING);
+ hdmi_write(hdmi, 0x0, HDMI_TX_GYDATA0);
+ hdmi_write(hdmi, 0x0, HDMI_TX_GYDATA1);
+ hdmi_write(hdmi, 0x0, HDMI_TX_RCRDATA0);
+ hdmi_write(hdmi, 0x0, HDMI_TX_RCRDATA1);
+ hdmi_write(hdmi, 0x0, HDMI_TX_BCBDATA0);
+ hdmi_write(hdmi, 0x0, HDMI_TX_BCBDATA1);
+}
+
+static void hdmi_video_packetize(struct dw_hdmi *hdmi)
+{
+ u32 output_select = HDMI_VP_CONF_OUTPUT_SELECTOR_BYPASS;
+ u32 remap_size = HDMI_VP_REMAP_YCC422_16BIT;
+ u32 color_depth = 0;
+ uint val, vp_conf;
+
+ /* set the packetizer registers */
+ val = ((color_depth << HDMI_VP_PR_CD_COLOR_DEPTH_OFFSET) &
+ HDMI_VP_PR_CD_COLOR_DEPTH_MASK) |
+ ((0 << HDMI_VP_PR_CD_DESIRED_PR_FACTOR_OFFSET) &
+ HDMI_VP_PR_CD_DESIRED_PR_FACTOR_MASK);
+ hdmi_write(hdmi, val, HDMI_VP_PR_CD);
+
+ hdmi_mod(hdmi, HDMI_VP_STUFF, HDMI_VP_STUFF_PR_STUFFING_MASK,
+ HDMI_VP_STUFF_PR_STUFFING_STUFFING_MODE);
+
+ /* data from pixel repeater block */
+ vp_conf = HDMI_VP_CONF_PR_EN_DISABLE |
+ HDMI_VP_CONF_BYPASS_SELECT_VID_PACKETIZER;
+
+ hdmi_mod(hdmi, HDMI_VP_CONF, HDMI_VP_CONF_PR_EN_MASK |
+ HDMI_VP_CONF_BYPASS_SELECT_MASK, vp_conf);
+
+ hdmi_mod(hdmi, HDMI_VP_STUFF, HDMI_VP_STUFF_IDEFAULT_PHASE_MASK,
+ 1 << HDMI_VP_STUFF_IDEFAULT_PHASE_OFFSET);
+
+ hdmi_write(hdmi, remap_size, HDMI_VP_REMAP);
+
+ vp_conf = HDMI_VP_CONF_BYPASS_EN_ENABLE |
+ HDMI_VP_CONF_PP_EN_DISABLE |
+ HDMI_VP_CONF_YCC422_EN_DISABLE;
+
+ hdmi_mod(hdmi, HDMI_VP_CONF, HDMI_VP_CONF_BYPASS_EN_MASK |
+ HDMI_VP_CONF_PP_EN_ENMASK | HDMI_VP_CONF_YCC422_EN_MASK,
+ vp_conf);
+
+ hdmi_mod(hdmi, HDMI_VP_STUFF, HDMI_VP_STUFF_PP_STUFFING_MASK |
+ HDMI_VP_STUFF_YCC422_STUFFING_MASK,
+ HDMI_VP_STUFF_PP_STUFFING_STUFFING_MODE |
+ HDMI_VP_STUFF_YCC422_STUFFING_STUFFING_MODE);
+
+ hdmi_mod(hdmi, HDMI_VP_CONF, HDMI_VP_CONF_OUTPUT_SELECTOR_MASK,
+ output_select);
+}
+
+static inline void hdmi_phy_test_clear(struct dw_hdmi *hdmi, uint bit)
+{
+ hdmi_mod(hdmi, HDMI_PHY_TST0, HDMI_PHY_TST0_TSTCLR_MASK,
+ bit << HDMI_PHY_TST0_TSTCLR_OFFSET);
+}
+
+static int hdmi_phy_wait_i2c_done(struct dw_hdmi *hdmi, u32 msec)
+{
+ ulong start;
+ u32 val;
+
+ start = get_timer(0);
+ do {
+ val = hdmi_read(hdmi, HDMI_IH_I2CMPHY_STAT0);
+ if (val & 0x3) {
+ hdmi_write(hdmi, val, HDMI_IH_I2CMPHY_STAT0);
+ return 0;
+ }
+
+ udelay(100);
+ } while (get_timer(start) < msec);
+
+ return 1;
+}
+
+static void hdmi_phy_i2c_write(struct dw_hdmi *hdmi, uint data, uint addr)
+{
+ hdmi_write(hdmi, 0xff, HDMI_IH_I2CMPHY_STAT0);
+ hdmi_write(hdmi, addr, HDMI_PHY_I2CM_ADDRESS_ADDR);
+ hdmi_write(hdmi, (u8)(data >> 8), HDMI_PHY_I2CM_DATAO_1_ADDR);
+ hdmi_write(hdmi, (u8)(data >> 0), HDMI_PHY_I2CM_DATAO_0_ADDR);
+ hdmi_write(hdmi, HDMI_PHY_I2CM_OPERATION_ADDR_WRITE,
+ HDMI_PHY_I2CM_OPERATION_ADDR);
+
+ hdmi_phy_wait_i2c_done(hdmi, 1000);
+}
+
+static void hdmi_phy_enable_power(struct dw_hdmi *hdmi, uint enable)
+{
+ hdmi_mod(hdmi, HDMI_PHY_CONF0, HDMI_PHY_CONF0_PDZ_MASK,
+ enable << HDMI_PHY_CONF0_PDZ_OFFSET);
+}
+
+static void hdmi_phy_enable_tmds(struct dw_hdmi *hdmi, uint enable)
+{
+ hdmi_mod(hdmi, HDMI_PHY_CONF0, HDMI_PHY_CONF0_ENTMDS_MASK,
+ enable << HDMI_PHY_CONF0_ENTMDS_OFFSET);
+}
+
+static void hdmi_phy_enable_spare(struct dw_hdmi *hdmi, uint enable)
+{
+ hdmi_mod(hdmi, HDMI_PHY_CONF0, HDMI_PHY_CONF0_SPARECTRL_MASK,
+ enable << HDMI_PHY_CONF0_SPARECTRL_OFFSET);
+}
+
+static void hdmi_phy_gen2_pddq(struct dw_hdmi *hdmi, uint enable)
+{
+ hdmi_mod(hdmi, HDMI_PHY_CONF0, HDMI_PHY_CONF0_GEN2_PDDQ_MASK,
+ enable << HDMI_PHY_CONF0_GEN2_PDDQ_OFFSET);
+}
+
+static void hdmi_phy_gen2_txpwron(struct dw_hdmi *hdmi, uint enable)
+{
+ hdmi_mod(hdmi, HDMI_PHY_CONF0,
+ HDMI_PHY_CONF0_GEN2_TXPWRON_MASK,
+ enable << HDMI_PHY_CONF0_GEN2_TXPWRON_OFFSET);
+}
+
+static void hdmi_phy_sel_data_en_pol(struct dw_hdmi *hdmi, uint enable)
+{
+ hdmi_mod(hdmi, HDMI_PHY_CONF0,
+ HDMI_PHY_CONF0_SELDATAENPOL_MASK,
+ enable << HDMI_PHY_CONF0_SELDATAENPOL_OFFSET);
+}
+
+static void hdmi_phy_sel_interface_control(struct dw_hdmi *hdmi,
+ uint enable)
+{
+ hdmi_mod(hdmi, HDMI_PHY_CONF0, HDMI_PHY_CONF0_SELDIPIF_MASK,
+ enable << HDMI_PHY_CONF0_SELDIPIF_OFFSET);
+}
+
+static int hdmi_phy_configure(struct dw_hdmi *hdmi, u32 mpixelclock)
+{
+ ulong start;
+ uint i, val;
+
+ if (!hdmi->mpll_cfg || !hdmi->phy_cfg)
+ return -1;
+
+ /* gen2 tx power off */
+ hdmi_phy_gen2_txpwron(hdmi, 0);
+
+ /* gen2 pddq */
+ hdmi_phy_gen2_pddq(hdmi, 1);
+
+ /* phy reset */
+ hdmi_write(hdmi, HDMI_MC_PHYRSTZ_DEASSERT, HDMI_MC_PHYRSTZ);
+ hdmi_write(hdmi, HDMI_MC_PHYRSTZ_ASSERT, HDMI_MC_PHYRSTZ);
+ hdmi_write(hdmi, HDMI_MC_HEACPHY_RST_ASSERT, HDMI_MC_HEACPHY_RST);
+
+ hdmi_phy_test_clear(hdmi, 1);
+ hdmi_write(hdmi, HDMI_PHY_I2CM_SLAVE_ADDR_PHY_GEN2,
+ HDMI_PHY_I2CM_SLAVE_ADDR);
+ hdmi_phy_test_clear(hdmi, 0);
+
+ /* pll/mpll cfg - always match on final entry */
+ for (i = 0; hdmi->mpll_cfg[i].mpixelclock != (~0ul); i++)
+ if (mpixelclock <= hdmi->mpll_cfg[i].mpixelclock)
+ break;
+
+ hdmi_phy_i2c_write(hdmi, hdmi->mpll_cfg[i].cpce, PHY_OPMODE_PLLCFG);
+ hdmi_phy_i2c_write(hdmi, hdmi->mpll_cfg[i].gmp, PHY_PLLGMPCTRL);
+ hdmi_phy_i2c_write(hdmi, hdmi->mpll_cfg[i].curr, PHY_PLLCURRCTRL);
+
+ hdmi_phy_i2c_write(hdmi, 0x0000, PHY_PLLPHBYCTRL);
+ hdmi_phy_i2c_write(hdmi, 0x0006, PHY_PLLCLKBISTPHASE);
+
+ for (i = 0; hdmi->phy_cfg[i].mpixelclock != (~0ul); i++)
+ if (mpixelclock <= hdmi->phy_cfg[i].mpixelclock)
+ break;
+
+ /*
+ * resistance term 133ohm cfg
+ * preemp cgf 0.00
+ * tx/ck lvl 10
+ */
+ hdmi_phy_i2c_write(hdmi, hdmi->phy_cfg[i].term, PHY_TXTERM);
+ hdmi_phy_i2c_write(hdmi, hdmi->phy_cfg[i].sym_ctr, PHY_CKSYMTXCTRL);
+ hdmi_phy_i2c_write(hdmi, hdmi->phy_cfg[i].vlev_ctr, PHY_VLEVCTRL);
+
+ /* remove clk term */
+ hdmi_phy_i2c_write(hdmi, 0x8000, PHY_CKCALCTRL);
+
+ hdmi_phy_enable_power(hdmi, 1);
+
+ /* toggle tmds enable */
+ hdmi_phy_enable_tmds(hdmi, 0);
+ hdmi_phy_enable_tmds(hdmi, 1);
+
+ /* gen2 tx power on */
+ hdmi_phy_gen2_txpwron(hdmi, 1);
+ hdmi_phy_gen2_pddq(hdmi, 0);
+
+ hdmi_phy_enable_spare(hdmi, 1);
+
+ /* wait for phy pll lock */
+ start = get_timer(0);
+ do {
+ val = hdmi_read(hdmi, HDMI_PHY_STAT0);
+ if (!(val & HDMI_PHY_TX_PHY_LOCK))
+ return 0;
+
+ udelay(100);
+ } while (get_timer(start) < 5);
+
+ return -1;
+}
+
+static void hdmi_av_composer(struct dw_hdmi *hdmi,
+ const struct display_timing *edid)
+{
+ bool mdataenablepolarity = true;
+ uint inv_val;
+ uint hbl;
+ uint vbl;
+
+ hbl = edid->hback_porch.typ + edid->hfront_porch.typ +
+ edid->hsync_len.typ;
+ vbl = edid->vback_porch.typ + edid->vfront_porch.typ +
+ edid->vsync_len.typ;
+
+ /* set up hdmi_fc_invidconf */
+ inv_val = HDMI_FC_INVIDCONF_HDCP_KEEPOUT_INACTIVE;
+
+ inv_val |= (edid->flags & DISPLAY_FLAGS_HSYNC_HIGH ?
+ HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_HIGH :
+ HDMI_FC_INVIDCONF_VSYNC_IN_POLARITY_ACTIVE_LOW);
+
+ inv_val |= (edid->flags & DISPLAY_FLAGS_VSYNC_HIGH ?
+ HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_HIGH :
+ HDMI_FC_INVIDCONF_HSYNC_IN_POLARITY_ACTIVE_LOW);
+
+ inv_val |= (mdataenablepolarity ?
+ HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_HIGH :
+ HDMI_FC_INVIDCONF_DE_IN_POLARITY_ACTIVE_LOW);
+
+ /*
+ * TODO(sjg@chromium.org>: Need to check for HDMI / DVI
+ * inv_val |= (edid->hdmi_monitor_detected ?
+ * HDMI_FC_INVIDCONF_DVI_MODEZ_HDMI_MODE :
+ * HDMI_FC_INVIDCONF_DVI_MODEZ_DVI_MODE);
+ */
+ inv_val |= HDMI_FC_INVIDCONF_DVI_MODEZ_HDMI_MODE;
+
+ inv_val |= HDMI_FC_INVIDCONF_R_V_BLANK_IN_OSC_ACTIVE_LOW;
+
+ inv_val |= HDMI_FC_INVIDCONF_IN_I_P_PROGRESSIVE;
+
+ hdmi_write(hdmi, inv_val, HDMI_FC_INVIDCONF);
+
+ /* set up horizontal active pixel width */
+ hdmi_write(hdmi, edid->hactive.typ >> 8, HDMI_FC_INHACTV1);
+ hdmi_write(hdmi, edid->hactive.typ, HDMI_FC_INHACTV0);
+
+ /* set up vertical active lines */
+ hdmi_write(hdmi, edid->vactive.typ >> 8, HDMI_FC_INVACTV1);
+ hdmi_write(hdmi, edid->vactive.typ, HDMI_FC_INVACTV0);
+
+ /* set up horizontal blanking pixel region width */
+ hdmi_write(hdmi, hbl >> 8, HDMI_FC_INHBLANK1);
+ hdmi_write(hdmi, hbl, HDMI_FC_INHBLANK0);
+
+ /* set up vertical blanking pixel region width */
+ hdmi_write(hdmi, vbl, HDMI_FC_INVBLANK);
+
+ /* set up hsync active edge delay width (in pixel clks) */
+ hdmi_write(hdmi, edid->hfront_porch.typ >> 8, HDMI_FC_HSYNCINDELAY1);
+ hdmi_write(hdmi, edid->hfront_porch.typ, HDMI_FC_HSYNCINDELAY0);
+
+ /* set up vsync active edge delay (in lines) */
+ hdmi_write(hdmi, edid->vfront_porch.typ, HDMI_FC_VSYNCINDELAY);
+
+ /* set up hsync active pulse width (in pixel clks) */
+ hdmi_write(hdmi, edid->hsync_len.typ >> 8, HDMI_FC_HSYNCINWIDTH1);
+ hdmi_write(hdmi, edid->hsync_len.typ, HDMI_FC_HSYNCINWIDTH0);
+
+ /* set up vsync active edge delay (in lines) */
+ hdmi_write(hdmi, edid->vsync_len.typ, HDMI_FC_VSYNCINWIDTH);
+}
+
+/* hdmi initialization step b.4 */
+static void hdmi_enable_video_path(struct dw_hdmi *hdmi)
+{
+ uint clkdis;
+
+ /* control period minimum duration */
+ hdmi_write(hdmi, 12, HDMI_FC_CTRLDUR);
+ hdmi_write(hdmi, 32, HDMI_FC_EXCTRLDUR);
+ hdmi_write(hdmi, 1, HDMI_FC_EXCTRLSPAC);
+
+ /* set to fill tmds data channels */
+ hdmi_write(hdmi, 0x0b, HDMI_FC_CH0PREAM);
+ hdmi_write(hdmi, 0x16, HDMI_FC_CH1PREAM);
+ hdmi_write(hdmi, 0x21, HDMI_FC_CH2PREAM);
+
+ hdmi_write(hdmi, HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_BYPASS,
+ HDMI_MC_FLOWCTRL);
+
+ /* enable pixel clock and tmds data path */
+ clkdis = 0x7f;
+ clkdis &= ~HDMI_MC_CLKDIS_PIXELCLK_DISABLE;
+ hdmi_write(hdmi, clkdis, HDMI_MC_CLKDIS);
+
+ clkdis &= ~HDMI_MC_CLKDIS_TMDSCLK_DISABLE;
+ hdmi_write(hdmi, clkdis, HDMI_MC_CLKDIS);
+
+ clkdis &= ~HDMI_MC_CLKDIS_AUDCLK_DISABLE;
+ hdmi_write(hdmi, clkdis, HDMI_MC_CLKDIS);
+}
+
+/* workaround to clear the overflow condition */
+static void hdmi_clear_overflow(struct dw_hdmi *hdmi)
+{
+ uint val, count;
+
+ /* tmds software reset */
+ hdmi_write(hdmi, (u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ, HDMI_MC_SWRSTZ);
+
+ val = hdmi_read(hdmi, HDMI_FC_INVIDCONF);
+
+ for (count = 0; count < 4; count++)
+ hdmi_write(hdmi, val, HDMI_FC_INVIDCONF);
+}
+
+static void hdmi_audio_set_format(struct dw_hdmi *hdmi)
+{
+ hdmi_write(hdmi, HDMI_AUD_CONF0_I2S_SELECT | HDMI_AUD_CONF0_I2S_IN_EN_0,
+ HDMI_AUD_CONF0);
+
+
+ hdmi_write(hdmi, HDMI_AUD_CONF1_I2S_MODE_STANDARD_MODE |
+ HDMI_AUD_CONF1_I2S_WIDTH_16BIT, HDMI_AUD_CONF1);
+
+ hdmi_write(hdmi, 0x00, HDMI_AUD_CONF2);
+}
+
+static void hdmi_audio_fifo_reset(struct dw_hdmi *hdmi)
+{
+ hdmi_write(hdmi, (u8)~HDMI_MC_SWRSTZ_II2SSWRST_REQ, HDMI_MC_SWRSTZ);
+ hdmi_write(hdmi, HDMI_AUD_CONF0_SW_AUDIO_FIFO_RST, HDMI_AUD_CONF0);
+
+ hdmi_write(hdmi, 0x00, HDMI_AUD_INT);
+ hdmi_write(hdmi, 0x00, HDMI_AUD_INT1);
+}
+
+static int hdmi_get_plug_in_status(struct dw_hdmi *hdmi)
+{
+ uint val = hdmi_read(hdmi, HDMI_PHY_STAT0) & HDMI_PHY_HPD;
+
+ return !!val;
+}
+
+static int hdmi_ddc_wait_i2c_done(struct dw_hdmi *hdmi, int msec)
+{
+ u32 val;
+ ulong start;
+
+ start = get_timer(0);
+ do {
+ val = hdmi_read(hdmi, HDMI_IH_I2CM_STAT0);
+ if (val & 0x2) {
+ hdmi_write(hdmi, val, HDMI_IH_I2CM_STAT0);
+ return 0;
+ }
+
+ udelay(100);
+ } while (get_timer(start) < msec);
+
+ return 1;
+}
+
+static void hdmi_ddc_reset(struct dw_hdmi *hdmi)
+{
+ hdmi_mod(hdmi, HDMI_I2CM_SOFTRSTZ, HDMI_I2CM_SOFTRSTZ_MASK, 0);
+}
+
+static int hdmi_read_edid(struct dw_hdmi *hdmi, int block, u8 *buff)
+{
+ int shift = (block % 2) * 0x80;
+ int edid_read_err = 0;
+ u32 trytime = 5;
+ u32 n;
+
+ /* set ddc i2c clk which devided from ddc_clk to 100khz */
+ hdmi_write(hdmi, hdmi->i2c_clk_high, HDMI_I2CM_SS_SCL_HCNT_0_ADDR);
+ hdmi_write(hdmi, hdmi->i2c_clk_low, HDMI_I2CM_SS_SCL_LCNT_0_ADDR);
+ hdmi_mod(hdmi, HDMI_I2CM_DIV, HDMI_I2CM_DIV_FAST_STD_MODE,
+ HDMI_I2CM_DIV_STD_MODE);
+
+ hdmi_write(hdmi, HDMI_I2CM_SLAVE_DDC_ADDR, HDMI_I2CM_SLAVE);
+ hdmi_write(hdmi, HDMI_I2CM_SEGADDR_DDC, HDMI_I2CM_SEGADDR);
+ hdmi_write(hdmi, block >> 1, HDMI_I2CM_SEGPTR);
+
+ while (trytime--) {
+ edid_read_err = 0;
+
+ for (n = 0; n < HDMI_EDID_BLOCK_SIZE; n++) {
+ hdmi_write(hdmi, shift + n, HDMI_I2CM_ADDRESS);
+
+ if (block == 0)
+ hdmi_write(hdmi, HDMI_I2CM_OP_RD8,
+ HDMI_I2CM_OPERATION);
+ else
+ hdmi_write(hdmi, HDMI_I2CM_OP_RD8_EXT,
+ HDMI_I2CM_OPERATION);
+
+ if (hdmi_ddc_wait_i2c_done(hdmi, 10)) {
+ hdmi_ddc_reset(hdmi);
+ edid_read_err = 1;
+ break;
+ }
+
+ buff[n] = hdmi_read(hdmi, HDMI_I2CM_DATAI);
+ }
+
+ if (!edid_read_err)
+ break;
+ }
+
+ return edid_read_err;
+}
+
+static const u8 pre_buf[] = {
+ 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00,
+ 0x04, 0x69, 0xfa, 0x23, 0xc8, 0x28, 0x01, 0x00,
+ 0x10, 0x17, 0x01, 0x03, 0x80, 0x33, 0x1d, 0x78,
+ 0x2a, 0xd9, 0x45, 0xa2, 0x55, 0x4d, 0xa0, 0x27,
+ 0x12, 0x50, 0x54, 0xb7, 0xef, 0x00, 0x71, 0x4f,
+ 0x81, 0x40, 0x81, 0x80, 0x95, 0x00, 0xb3, 0x00,
+ 0xd1, 0xc0, 0x81, 0xc0, 0x81, 0x00, 0x02, 0x3a,
+ 0x80, 0x18, 0x71, 0x38, 0x2d, 0x40, 0x58, 0x2c,
+ 0x45, 0x00, 0xfd, 0x1e, 0x11, 0x00, 0x00, 0x1e,
+ 0x00, 0x00, 0x00, 0xff, 0x00, 0x44, 0x34, 0x4c,
+ 0x4d, 0x54, 0x46, 0x30, 0x37, 0x35, 0x39, 0x37,
+ 0x36, 0x0a, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x32,
+ 0x4b, 0x18, 0x53, 0x11, 0x00, 0x0a, 0x20, 0x20,
+ 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfc,
+ 0x00, 0x41, 0x53, 0x55, 0x53, 0x20, 0x56, 0x53,
+ 0x32, 0x33, 0x38, 0x0a, 0x20, 0x20, 0x01, 0xb0,
+ 0x02, 0x03, 0x22, 0x71, 0x4f, 0x01, 0x02, 0x03,
+ 0x11, 0x12, 0x13, 0x04, 0x14, 0x05, 0x0e, 0x0f,
+ 0x1d, 0x1e, 0x1f, 0x10, 0x23, 0x09, 0x17, 0x07,
+ 0x83, 0x01, 0x00, 0x00, 0x65, 0x03, 0x0c, 0x00,
+ 0x10, 0x00, 0x8c, 0x0a, 0xd0, 0x8a, 0x20, 0xe0,
+ 0x2d, 0x10, 0x10, 0x3e, 0x96, 0x00, 0xfd, 0x1e,
+ 0x11, 0x00, 0x00, 0x18, 0x01, 0x1d, 0x00, 0x72,
+ 0x51, 0xd0, 0x1e, 0x20, 0x6e, 0x28, 0x55, 0x00,
+ 0xfd, 0x1e, 0x11, 0x00, 0x00, 0x1e, 0x01, 0x1d,
+ 0x00, 0xbc, 0x52, 0xd0, 0x1e, 0x20, 0xb8, 0x28,
+ 0x55, 0x40, 0xfd, 0x1e, 0x11, 0x00, 0x00, 0x1e,
+ 0x8c, 0x0a, 0xd0, 0x90, 0x20, 0x40, 0x31, 0x20,
+ 0x0c, 0x40, 0x55, 0x00, 0xfd, 0x1e, 0x11, 0x00,
+ 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xe9,
+};
+
+int dw_hdmi_phy_cfg(struct dw_hdmi *hdmi, uint mpixelclock)
+{
+ int i, ret;
+
+ /* hdmi phy spec says to do the phy initialization sequence twice */
+ for (i = 0; i < 2; i++) {
+ hdmi_phy_sel_data_en_pol(hdmi, 1);
+ hdmi_phy_sel_interface_control(hdmi, 0);
+ hdmi_phy_enable_tmds(hdmi, 0);
+ hdmi_phy_enable_power(hdmi, 0);
+
+ ret = hdmi_phy_configure(hdmi, mpixelclock);
+ if (ret) {
+ debug("hdmi phy config failure %d\n", ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+int dw_hdmi_phy_wait_for_hpd(struct dw_hdmi *hdmi)
+{
+ ulong start;
+
+ start = get_timer(0);
+ do {
+ if (hdmi_get_plug_in_status(hdmi))
+ return 0;
+ udelay(100);
+ } while (get_timer(start) < 300);
+
+ return -1;
+}
+
+void dw_hdmi_phy_init(struct dw_hdmi *hdmi)
+{
+ /* enable phy i2cm done irq */
+ hdmi_write(hdmi, HDMI_PHY_I2CM_INT_ADDR_DONE_POL,
+ HDMI_PHY_I2CM_INT_ADDR);
+
+ /* enable phy i2cm nack & arbitration error irq */
+ hdmi_write(hdmi, HDMI_PHY_I2CM_CTLINT_ADDR_NAC_POL |
+ HDMI_PHY_I2CM_CTLINT_ADDR_ARBITRATION_POL,
+ HDMI_PHY_I2CM_CTLINT_ADDR);
+
+ /* enable cable hot plug irq */
+ hdmi_write(hdmi, (u8)~HDMI_PHY_HPD, HDMI_PHY_MASK0);
+
+ /* clear hotplug interrupts */
+ hdmi_write(hdmi, HDMI_IH_PHY_STAT0_HPD, HDMI_IH_PHY_STAT0);
+}
+
+int dw_hdmi_read_edid(struct dw_hdmi *hdmi, u8 *buf, int buf_size)
+{
+ u32 edid_size = HDMI_EDID_BLOCK_SIZE;
+ int ret;
+
+ if (0) {
+ edid_size = sizeof(pre_buf);
+ memcpy(buf, pre_buf, edid_size);
+ } else {
+ ret = hdmi_read_edid(hdmi, 0, buf);
+ if (ret) {
+ debug("failed to read edid.\n");
+ return -1;
+ }
+
+ if (buf[0x7e] != 0) {
+ hdmi_read_edid(hdmi, 1, buf + HDMI_EDID_BLOCK_SIZE);
+ edid_size += HDMI_EDID_BLOCK_SIZE;
+ }
+ }
+
+ return edid_size;
+}
+
+int dw_hdmi_enable(struct dw_hdmi *hdmi, const struct display_timing *edid)
+{
+ int ret;
+
+ debug("hdmi, mode info : clock %d hdis %d vdis %d\n",
+ edid->pixelclock.typ, edid->hactive.typ, edid->vactive.typ);
+
+ hdmi_av_composer(hdmi, edid);
+
+ ret = hdmi->phy_set(hdmi, edid->pixelclock.typ);
+ if (ret)
+ return ret;
+
+ hdmi_enable_video_path(hdmi);
+
+ hdmi_audio_fifo_reset(hdmi);
+ hdmi_audio_set_format(hdmi);
+ hdmi_audio_set_samplerate(hdmi, edid->pixelclock.typ);
+
+ hdmi_video_packetize(hdmi);
+ hdmi_video_sample(hdmi);
+
+ hdmi_clear_overflow(hdmi);
+
+ return 0;
+}
+
+void dw_hdmi_init(struct dw_hdmi *hdmi)
+{
+ uint ih_mute;
+
+ /*
+ * boot up defaults are:
+ * hdmi_ih_mute = 0x03 (disabled)
+ * hdmi_ih_mute_* = 0x00 (enabled)
+ *
+ * disable top level interrupt bits in hdmi block
+ */
+ ih_mute = /*hdmi_read(hdmi, HDMI_IH_MUTE) |*/
+ HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT |
+ HDMI_IH_MUTE_MUTE_ALL_INTERRUPT;
+
+ hdmi_write(hdmi, ih_mute, HDMI_IH_MUTE);
+
+ /* enable i2c master done irq */
+ hdmi_write(hdmi, ~0x04, HDMI_I2CM_INT);
+
+ /* enable i2c client nack % arbitration error irq */
+ hdmi_write(hdmi, ~0x44, HDMI_I2CM_CTLINT);
+}
projects / oweals / u-boot.git / blobdiff