/* * Copyright (c) 2015 Google, Inc * Copyright 2014 Rockchip Inc. * * SPDX-License-Identifier: GPL-2.0+ */ #include #include #include #include #include #include #include #include #include #include #include #include #include struct tmds_n_cts { u32 tmds; u32 cts; u32 n; }; struct rk_hdmi_priv { struct rk3288_hdmi *regs; struct rk3288_grf *grf; }; 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, } }; struct hdmi_mpll_config { u64 mpixelclock; /* Mode of Operation and PLL Dividers Control Register */ u32 cpce; /* PLL Gmp Control Register */ u32 gmp; /* PLL Current COntrol Register */ u32 curr; }; struct hdmi_phy_config { u64 mpixelclock; u32 sym_ctr; /* clock symbol and transmitter control */ u32 term; /* transmission termination value */ u32 vlev_ctr; /* voltage level control */ }; static const struct hdmi_phy_config rockchip_phy_config[] = { { .mpixelclock = 74250000, .sym_ctr = 0x8009, .term = 0x0004, .vlev_ctr = 0x0272, }, { .mpixelclock = 148500000, .sym_ctr = 0x802b, .term = 0x0004, .vlev_ctr = 0x028d, }, { .mpixelclock = 297000000, .sym_ctr = 0x8039, .term = 0x0005, .vlev_ctr = 0x028d, }, { .mpixelclock = ~0ul, .sym_ctr = 0x0000, .term = 0x0000, .vlev_ctr = 0x0000, } }; static const struct hdmi_mpll_config rockchip_mpll_cfg[] = { { .mpixelclock = 40000000, .cpce = 0x00b3, .gmp = 0x0000, .curr = 0x0018, }, { .mpixelclock = 65000000, .cpce = 0x0072, .gmp = 0x0001, .curr = 0x0028, }, { .mpixelclock = 66000000, .cpce = 0x013e, .gmp = 0x0003, .curr = 0x0038, }, { .mpixelclock = 83500000, .cpce = 0x0072, .gmp = 0x0001, .curr = 0x0028, }, { .mpixelclock = 146250000, .cpce = 0x0051, .gmp = 0x0002, .curr = 0x0038, }, { .mpixelclock = 148500000, .cpce = 0x0051, .gmp = 0x0003, .curr = 0x0000, }, { .mpixelclock = ~0ul, .cpce = 0x0051, .gmp = 0x0003, .curr = 0x0000, } }; static const u32 csc_coeff_default[3][4] = { { 0x2000, 0x0000, 0x0000, 0x0000 }, { 0x0000, 0x2000, 0x0000, 0x0000 }, { 0x0000, 0x0000, 0x2000, 0x0000 } }; static void hdmi_set_clock_regenerator(struct rk3288_hdmi *regs, u32 n, u32 cts) { uint cts3; uint n3; /* first set ncts_atomic_write (if present) */ n3 = HDMI_AUD_N3_NCTS_ATOMIC_WRITE; writel(n3, ®s->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 */ writel(cts3, ®s->aud_cts3); writel((cts >> 8) & 0xff, ®s->aud_cts2); writel(cts & 0xff, ®s->aud_cts1); /* write n values; n1 must be written last */ n3 |= (n >> 16) & HDMI_AUD_N3_AUDN19_16_MASK; writel(n3, ®s->aud_n3); writel((n >> 8) & 0xff, ®s->aud_n2); writel(n & 0xff, ®s->aud_n1); writel(HDMI_AUD_INPUTCLKFS_128, ®s->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 rk3288_hdmi *regs, 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(regs, 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 rk3288_hdmi *regs) { 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); writel(val, ®s->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; writel(val, ®s->tx_instuffing); writel(0x0, ®s->tx_gydata0); writel(0x0, ®s->tx_gydata1); writel(0x0, ®s->tx_rcrdata0); writel(0x0, ®s->tx_rcrdata1); writel(0x0, ®s->tx_bcbdata0); writel(0x0, ®s->tx_bcbdata1); } static void hdmi_update_csc_coeffs(struct rk3288_hdmi *regs) { u32 i, j; u32 csc_scale = 1; /* the csc registers are sequential, alternating msb then lsb */ for (i = 0; i < ARRAY_SIZE(csc_coeff_default); i++) { for (j = 0; j < ARRAY_SIZE(csc_coeff_default[0]); j++) { u32 coeff = csc_coeff_default[i][j]; writel(coeff >> 8, ®s->csc_coef[i][j].msb); writel(coeff && 0xff, ®s->csc_coef[i][j].lsb); } } clrsetbits_le32(®s->csc_scale, HDMI_CSC_SCALE_CSCSCALE_MASK, csc_scale); } static void hdmi_video_csc(struct rk3288_hdmi *regs) { u32 color_depth = HDMI_CSC_SCALE_CSC_COLORDE_PTH_24BPP; u32 interpolation = HDMI_CSC_CFG_INTMODE_DISABLE; /* configure the csc registers */ writel(interpolation, ®s->csc_cfg); clrsetbits_le32(®s->csc_scale, HDMI_CSC_SCALE_CSC_COLORDE_PTH_MASK, color_depth); hdmi_update_csc_coeffs(regs); } static void hdmi_video_packetize(struct rk3288_hdmi *regs) { 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); writel(val, ®s->vp_pr_cd); clrsetbits_le32(®s->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; clrsetbits_le32(®s->vp_conf, HDMI_VP_CONF_PR_EN_MASK | HDMI_VP_CONF_BYPASS_SELECT_MASK, vp_conf); clrsetbits_le32(®s->vp_stuff, HDMI_VP_STUFF_IDEFAULT_PHASE_MASK, 1 << HDMI_VP_STUFF_IDEFAULT_PHASE_OFFSET); writel(remap_size, ®s->vp_remap); vp_conf = HDMI_VP_CONF_BYPASS_EN_ENABLE | HDMI_VP_CONF_PP_EN_DISABLE | HDMI_VP_CONF_YCC422_EN_DISABLE; clrsetbits_le32(®s->vp_conf, HDMI_VP_CONF_BYPASS_EN_MASK | HDMI_VP_CONF_PP_EN_ENMASK | HDMI_VP_CONF_YCC422_EN_MASK, vp_conf); clrsetbits_le32(®s->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); clrsetbits_le32(®s->vp_conf, HDMI_VP_CONF_OUTPUT_SELECTOR_MASK, output_select); } static inline void hdmi_phy_test_clear(struct rk3288_hdmi *regs, uint bit) { clrsetbits_le32(®s->phy_tst0, HDMI_PHY_TST0_TSTCLR_MASK, bit << HDMI_PHY_TST0_TSTCLR_OFFSET); } static int hdmi_phy_wait_i2c_done(struct rk3288_hdmi *regs, u32 msec) { ulong start; u32 val; start = get_timer(0); do { val = readl(®s->ih_i2cmphy_stat0); if (val & 0x3) { writel(val, ®s->ih_i2cmphy_stat0); return 0; } udelay(100); } while (get_timer(start) < msec); return 1; } static void hdmi_phy_i2c_write(struct rk3288_hdmi *regs, uint data, uint addr) { writel(0xff, ®s->ih_i2cmphy_stat0); writel(addr, ®s->phy_i2cm_address_addr); writel((u8)(data >> 8), ®s->phy_i2cm_datao_1_addr); writel((u8)(data >> 0), ®s->phy_i2cm_datao_0_addr); writel(HDMI_PHY_I2CM_OPERATION_ADDR_WRITE, ®s->phy_i2cm_operation_addr); hdmi_phy_wait_i2c_done(regs, 1000); } static void hdmi_phy_enable_power(struct rk3288_hdmi *regs, uint enable) { clrsetbits_le32(®s->phy_conf0, HDMI_PHY_CONF0_PDZ_MASK, enable << HDMI_PHY_CONF0_PDZ_OFFSET); } static void hdmi_phy_enable_tmds(struct rk3288_hdmi *regs, uint enable) { clrsetbits_le32(®s->phy_conf0, HDMI_PHY_CONF0_ENTMDS_MASK, enable << HDMI_PHY_CONF0_ENTMDS_OFFSET); } static void hdmi_phy_enable_spare(struct rk3288_hdmi *regs, uint enable) { clrsetbits_le32(®s->phy_conf0, HDMI_PHY_CONF0_SPARECTRL_MASK, enable << HDMI_PHY_CONF0_SPARECTRL_OFFSET); } static void hdmi_phy_gen2_pddq(struct rk3288_hdmi *regs, uint enable) { clrsetbits_le32(®s->phy_conf0, HDMI_PHY_CONF0_GEN2_PDDQ_MASK, enable << HDMI_PHY_CONF0_GEN2_PDDQ_OFFSET); } static void hdmi_phy_gen2_txpwron(struct rk3288_hdmi *regs, uint enable) { clrsetbits_le32(®s->phy_conf0, HDMI_PHY_CONF0_GEN2_TXPWRON_MASK, enable << HDMI_PHY_CONF0_GEN2_TXPWRON_OFFSET); } static void hdmi_phy_sel_data_en_pol(struct rk3288_hdmi *regs, uint enable) { clrsetbits_le32(®s->phy_conf0, HDMI_PHY_CONF0_SELDATAENPOL_MASK, enable << HDMI_PHY_CONF0_SELDATAENPOL_OFFSET); } static void hdmi_phy_sel_interface_control(struct rk3288_hdmi *regs, uint enable) { clrsetbits_le32(®s->phy_conf0, HDMI_PHY_CONF0_SELDIPIF_MASK, enable << HDMI_PHY_CONF0_SELDIPIF_OFFSET); } static int hdmi_phy_configure(struct rk3288_hdmi *regs, u32 mpixelclock) { ulong start; uint i, val; writel(HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_BYPASS, ®s->mc_flowctrl); /* gen2 tx power off */ hdmi_phy_gen2_txpwron(regs, 0); /* gen2 pddq */ hdmi_phy_gen2_pddq(regs, 1); /* phy reset */ writel(HDMI_MC_PHYRSTZ_DEASSERT, ®s->mc_phyrstz); writel(HDMI_MC_PHYRSTZ_ASSERT, ®s->mc_phyrstz); writel(HDMI_MC_HEACPHY_RST_ASSERT, ®s->mc_heacphy_rst); hdmi_phy_test_clear(regs, 1); writel(HDMI_PHY_I2CM_SLAVE_ADDR_PHY_GEN2, ®s->phy_i2cm_slave_addr); hdmi_phy_test_clear(regs, 0); /* pll/mpll cfg - always match on final entry */ for (i = 0; rockchip_mpll_cfg[i].mpixelclock != (~0ul); i++) if (mpixelclock <= rockchip_mpll_cfg[i].mpixelclock) break; hdmi_phy_i2c_write(regs, rockchip_mpll_cfg[i].cpce, PHY_OPMODE_PLLCFG); hdmi_phy_i2c_write(regs, rockchip_mpll_cfg[i].gmp, PHY_PLLGMPCTRL); hdmi_phy_i2c_write(regs, rockchip_mpll_cfg[i].curr, PHY_PLLCURRCTRL); hdmi_phy_i2c_write(regs, 0x0000, PHY_PLLPHBYCTRL); hdmi_phy_i2c_write(regs, 0x0006, PHY_PLLCLKBISTPHASE); for (i = 0; rockchip_phy_config[i].mpixelclock != (~0ul); i++) if (mpixelclock <= rockchip_phy_config[i].mpixelclock) break; /* * resistance term 133ohm cfg * preemp cgf 0.00 * tx/ck lvl 10 */ hdmi_phy_i2c_write(regs, rockchip_phy_config[i].term, PHY_TXTERM); hdmi_phy_i2c_write(regs, rockchip_phy_config[i].sym_ctr, PHY_CKSYMTXCTRL); hdmi_phy_i2c_write(regs, rockchip_phy_config[i].vlev_ctr, PHY_VLEVCTRL); /* remove clk term */ hdmi_phy_i2c_write(regs, 0x8000, PHY_CKCALCTRL); hdmi_phy_enable_power(regs, 1); /* toggle tmds enable */ hdmi_phy_enable_tmds(regs, 0); hdmi_phy_enable_tmds(regs, 1); /* gen2 tx power on */ hdmi_phy_gen2_txpwron(regs, 1); hdmi_phy_gen2_pddq(regs, 0); hdmi_phy_enable_spare(regs, 1); /* wait for phy pll lock */ start = get_timer(0); do { val = readl(®s->phy_stat0); if (!(val & HDMI_PHY_TX_PHY_LOCK)) return 0; udelay(100); } while (get_timer(start) < 5); return -1; } static int hdmi_phy_init(struct rk3288_hdmi *regs, 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(regs, 1); hdmi_phy_sel_interface_control(regs, 0); hdmi_phy_enable_tmds(regs, 0); hdmi_phy_enable_power(regs, 0); /* enable csc */ ret = hdmi_phy_configure(regs, mpixelclock); if (ret) { debug("hdmi phy config failure %d\n", ret); return ret; } } return 0; } static void hdmi_av_composer(struct rk3288_hdmi *regs, 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; writel(inv_val, ®s->fc_invidconf); /* set up horizontal active pixel width */ writel(edid->hactive.typ >> 8, ®s->fc_inhactv1); writel(edid->hactive.typ, ®s->fc_inhactv0); /* set up vertical active lines */ writel(edid->vactive.typ >> 8, ®s->fc_invactv1); writel(edid->vactive.typ, ®s->fc_invactv0); /* set up horizontal blanking pixel region width */ writel(hbl >> 8, ®s->fc_inhblank1); writel(hbl, ®s->fc_inhblank0); /* set up vertical blanking pixel region width */ writel(vbl, ®s->fc_invblank); /* set up hsync active edge delay width (in pixel clks) */ writel(edid->hfront_porch.typ >> 8, ®s->fc_hsyncindelay1); writel(edid->hfront_porch.typ, ®s->fc_hsyncindelay0); /* set up vsync active edge delay (in lines) */ writel(edid->vfront_porch.typ, ®s->fc_vsyncindelay); /* set up hsync active pulse width (in pixel clks) */ writel(edid->hsync_len.typ >> 8, ®s->fc_hsyncinwidth1); writel(edid->hsync_len.typ, ®s->fc_hsyncinwidth0); /* set up vsync active edge delay (in lines) */ writel(edid->vsync_len.typ, ®s->fc_vsyncinwidth); } /* hdmi initialization step b.4 */ static void hdmi_enable_video_path(struct rk3288_hdmi *regs) { uint clkdis; /* control period minimum duration */ writel(12, ®s->fc_ctrldur); writel(32, ®s->fc_exctrldur); writel(1, ®s->fc_exctrlspac); /* set to fill tmds data channels */ writel(0x0b, ®s->fc_ch0pream); writel(0x16, ®s->fc_ch1pream); writel(0x21, ®s->fc_ch2pream); /* enable pixel clock and tmds data path */ clkdis = 0x7f; clkdis &= ~HDMI_MC_CLKDIS_PIXELCLK_DISABLE; writel(clkdis, ®s->mc_clkdis); clkdis &= ~HDMI_MC_CLKDIS_TMDSCLK_DISABLE; writel(clkdis, ®s->mc_clkdis); clkdis &= ~HDMI_MC_CLKDIS_AUDCLK_DISABLE; writel(clkdis, ®s->mc_clkdis); } /* workaround to clear the overflow condition */ static void hdmi_clear_overflow(struct rk3288_hdmi *regs) { uint val, count; /* tmds software reset */ writel((u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ, ®s->mc_swrstz); val = readl(®s->fc_invidconf); for (count = 0; count < 4; count++) writel(val, ®s->fc_invidconf); } static void hdmi_audio_set_format(struct rk3288_hdmi *regs) { writel(HDMI_AUD_CONF0_I2S_SELECT | HDMI_AUD_CONF0_I2S_IN_EN_0, ®s->aud_conf0); writel(HDMI_AUD_CONF1_I2S_MODE_STANDARD_MODE | HDMI_AUD_CONF1_I2S_WIDTH_16BIT, ®s->aud_conf1); writel(0x00, ®s->aud_conf2); } static void hdmi_audio_fifo_reset(struct rk3288_hdmi *regs) { writel((u8)~HDMI_MC_SWRSTZ_II2SSWRST_REQ, ®s->mc_swrstz); writel(HDMI_AUD_CONF0_SW_AUDIO_FIFO_RST, ®s->aud_conf0); writel(0x00, ®s->aud_int); writel(0x00, ®s->aud_int1); } static void hdmi_init_interrupt(struct rk3288_hdmi *regs) { 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 = readl(®s->ih_mute) | HDMI_IH_MUTE_MUTE_WAKEUP_INTERRUPT | HDMI_IH_MUTE_MUTE_ALL_INTERRUPT; writel(ih_mute, ®s->ih_mute); /* enable i2c master done irq */ writel(~0x04, ®s->i2cm_int); /* enable i2c client nack % arbitration error irq */ writel(~0x44, ®s->i2cm_ctlint); /* enable phy i2cm done irq */ writel(HDMI_PHY_I2CM_INT_ADDR_DONE_POL, ®s->phy_i2cm_int_addr); /* enable phy i2cm nack & arbitration error irq */ writel(HDMI_PHY_I2CM_CTLINT_ADDR_NAC_POL | HDMI_PHY_I2CM_CTLINT_ADDR_ARBITRATION_POL, ®s->phy_i2cm_ctlint_addr); /* enable cable hot plug irq */ writel((u8)~HDMI_PHY_HPD, ®s->phy_mask0); /* clear hotplug interrupts */ writel(HDMI_IH_PHY_STAT0_HPD, ®s->ih_phy_stat0); } static int hdmi_get_plug_in_status(struct rk3288_hdmi *regs) { uint val = readl(®s->phy_stat0) & HDMI_PHY_HPD; return !!val; } static int hdmi_wait_for_hpd(struct rk3288_hdmi *regs) { ulong start; start = get_timer(0); do { if (hdmi_get_plug_in_status(regs)) return 0; udelay(100); } while (get_timer(start) < 300); return -1; } static int hdmi_ddc_wait_i2c_done(struct rk3288_hdmi *regs, int msec) { u32 val; ulong start; start = get_timer(0); do { val = readl(®s->ih_i2cm_stat0); if (val & 0x2) { writel(val, ®s->ih_i2cm_stat0); return 0; } udelay(100); } while (get_timer(start) < msec); return 1; } static void hdmi_ddc_reset(struct rk3288_hdmi *regs) { clrbits_le32(®s->i2cm_softrstz, HDMI_I2CM_SOFTRSTZ); } static int hdmi_read_edid(struct rk3288_hdmi *regs, int block, u8 *buff) { int shift = (block % 2) * 0x80; int edid_read_err = 0; u32 trytime = 5; u32 n, j, val; /* set ddc i2c clk which devided from ddc_clk to 100khz */ writel(0x7a, ®s->i2cm_ss_scl_hcnt_0_addr); writel(0x8d, ®s->i2cm_ss_scl_lcnt_0_addr); /* * TODO(sjg@chromium.org): The above values don't work - these ones * work better, but generate lots of errors in the data. */ writel(0x0d, ®s->i2cm_ss_scl_hcnt_0_addr); writel(0x0d, ®s->i2cm_ss_scl_lcnt_0_addr); clrsetbits_le32(®s->i2cm_div, HDMI_I2CM_DIV_FAST_STD_MODE, HDMI_I2CM_DIV_STD_MODE); writel(HDMI_I2CM_SLAVE_DDC_ADDR, ®s->i2cm_slave); writel(HDMI_I2CM_SEGADDR_DDC, ®s->i2cm_segaddr); writel(block >> 1, ®s->i2cm_segptr); while (trytime--) { edid_read_err = 0; for (n = 0; n < HDMI_EDID_BLOCK_SIZE / 8; n++) { writel(shift + 8 * n, ®s->i2c_address); if (block == 0) clrsetbits_le32(®s->i2cm_operation, HDMI_I2CM_OPT_RD8, HDMI_I2CM_OPT_RD8); else clrsetbits_le32(®s->i2cm_operation, HDMI_I2CM_OPT_RD8_EXT, HDMI_I2CM_OPT_RD8_EXT); if (hdmi_ddc_wait_i2c_done(regs, 10)) { hdmi_ddc_reset(regs); edid_read_err = 1; break; } for (j = 0; j < 8; j++) { val = readl(®s->i2cm_buf0 + j); buff[8 * n + j] = val; } } 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, }; static int rk_hdmi_read_edid(struct udevice *dev, u8 *buf, int buf_size) { struct rk_hdmi_priv *priv = dev_get_priv(dev); 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(priv->regs, 0, buf); if (ret) { debug("failed to read edid.\n"); return -1; } if (buf[0x7e] != 0) { hdmi_read_edid(priv->regs, 1, buf + HDMI_EDID_BLOCK_SIZE); edid_size += HDMI_EDID_BLOCK_SIZE; } } return edid_size; } static int rk_hdmi_enable(struct udevice *dev, int panel_bpp, const struct display_timing *edid) { struct rk_hdmi_priv *priv = dev_get_priv(dev); struct rk3288_hdmi *regs = priv->regs; 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(regs, edid); ret = hdmi_phy_init(regs, edid->pixelclock.typ); if (ret) return ret; hdmi_enable_video_path(regs); hdmi_audio_fifo_reset(regs); hdmi_audio_set_format(regs); hdmi_audio_set_samplerate(regs, edid->pixelclock.typ); hdmi_video_packetize(regs); hdmi_video_csc(regs); hdmi_video_sample(regs); hdmi_clear_overflow(regs); return 0; } static int rk_hdmi_ofdata_to_platdata(struct udevice *dev) { struct rk_hdmi_priv *priv = dev_get_priv(dev); priv->regs = (struct rk3288_hdmi *)dev_get_addr(dev); priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); return 0; } static int rk_hdmi_probe(struct udevice *dev) { struct display_plat *uc_plat = dev_get_uclass_platdata(dev); struct rk_hdmi_priv *priv = dev_get_priv(dev); struct udevice *reg; struct clk clk; int ret; int vop_id = uc_plat->source_id; ret = clk_get_by_index(dev, 0, &clk); if (ret >= 0) { ret = clk_set_rate(&clk, 0); clk_free(&clk); } if (ret) { debug("%s: Failed to set hdmi clock: ret=%d\n", __func__, ret); return ret; } /* * Configure the maximum clock to permit whatever resolution the * monitor wants */ ret = clk_get_by_index(uc_plat->src_dev, 0, &clk); if (ret >= 0) { ret = clk_set_rate(&clk, 384000000); clk_free(&clk); } if (ret < 0) { debug("%s: Failed to set clock in source device '%s': ret=%d\n", __func__, uc_plat->src_dev->name, ret); return ret; } ret = regulator_get_by_platname("vcc50_hdmi", ®); if (!ret) ret = regulator_set_enable(reg, true); if (ret) debug("%s: Cannot set regulator vcc50_hdmi\n", __func__); /* hdmi source select hdmi controller */ rk_setreg(&priv->grf->soc_con6, 1 << 15); /* hdmi data from vop id */ rk_clrsetreg(&priv->grf->soc_con6, 1 << 4, (vop_id == 1) ? (1 << 4) : 0); ret = hdmi_wait_for_hpd(priv->regs); if (ret < 0) { debug("hdmi can not get hpd signal\n"); return -1; } hdmi_init_interrupt(priv->regs); return 0; } static const struct dm_display_ops rk_hdmi_ops = { .read_edid = rk_hdmi_read_edid, .enable = rk_hdmi_enable, }; static const struct udevice_id rk_hdmi_ids[] = { { .compatible = "rockchip,rk3288-dw-hdmi" }, { } }; U_BOOT_DRIVER(hdmi_rockchip) = { .name = "hdmi_rockchip", .id = UCLASS_DISPLAY, .of_match = rk_hdmi_ids, .ops = &rk_hdmi_ops, .ofdata_to_platdata = rk_hdmi_ofdata_to_platdata, .probe = rk_hdmi_probe, .priv_auto_alloc_size = sizeof(struct rk_hdmi_priv), };