/* * Copyright (C) 2012 Avionic Design GmbH * Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved. * * 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. */ #include #include #include #include #include #include "hdmi.h" #include "drm.h" #include "dc.h" #include "host1x_client.h" struct tegra_hdmi { struct host1x_client client; struct tegra_output output; struct device *dev; struct regulator *vdd; struct regulator *pll; void __iomem *regs; unsigned int irq; struct clk *clk_parent; struct clk *clk; unsigned int audio_source; unsigned int audio_freq; bool stereo; bool dvi; struct drm_info_list *debugfs_files; struct drm_minor *minor; struct dentry *debugfs; }; static inline struct tegra_hdmi * host1x_client_to_hdmi(struct host1x_client *client) { return container_of(client, struct tegra_hdmi, client); } static inline struct tegra_hdmi *to_hdmi(struct tegra_output *output) { return container_of(output, struct tegra_hdmi, output); } #define HDMI_AUDIOCLK_FREQ 216000000 #define HDMI_REKEY_DEFAULT 56 enum { AUTO = 0, SPDIF, HDA, }; static inline unsigned long tegra_hdmi_readl(struct tegra_hdmi *hdmi, unsigned long reg) { return readl(hdmi->regs + (reg << 2)); } static inline void tegra_hdmi_writel(struct tegra_hdmi *hdmi, unsigned long val, unsigned long reg) { writel(val, hdmi->regs + (reg << 2)); } struct tegra_hdmi_audio_config { unsigned int pclk; unsigned int n; unsigned int cts; unsigned int aval; }; static const struct tegra_hdmi_audio_config tegra_hdmi_audio_32k[] = { { 25200000, 4096, 25200, 24000 }, { 27000000, 4096, 27000, 24000 }, { 74250000, 4096, 74250, 24000 }, { 148500000, 4096, 148500, 24000 }, { 0, 0, 0, 0 }, }; static const struct tegra_hdmi_audio_config tegra_hdmi_audio_44_1k[] = { { 25200000, 5880, 26250, 25000 }, { 27000000, 5880, 28125, 25000 }, { 74250000, 4704, 61875, 20000 }, { 148500000, 4704, 123750, 20000 }, { 0, 0, 0, 0 }, }; static const struct tegra_hdmi_audio_config tegra_hdmi_audio_48k[] = { { 25200000, 6144, 25200, 24000 }, { 27000000, 6144, 27000, 24000 }, { 74250000, 6144, 74250, 24000 }, { 148500000, 6144, 148500, 24000 }, { 0, 0, 0, 0 }, }; static const struct tegra_hdmi_audio_config tegra_hdmi_audio_88_2k[] = { { 25200000, 11760, 26250, 25000 }, { 27000000, 11760, 28125, 25000 }, { 74250000, 9408, 61875, 20000 }, { 148500000, 9408, 123750, 20000 }, { 0, 0, 0, 0 }, }; static const struct tegra_hdmi_audio_config tegra_hdmi_audio_96k[] = { { 25200000, 12288, 25200, 24000 }, { 27000000, 12288, 27000, 24000 }, { 74250000, 12288, 74250, 24000 }, { 148500000, 12288, 148500, 24000 }, { 0, 0, 0, 0 }, }; static const struct tegra_hdmi_audio_config tegra_hdmi_audio_176_4k[] = { { 25200000, 23520, 26250, 25000 }, { 27000000, 23520, 28125, 25000 }, { 74250000, 18816, 61875, 20000 }, { 148500000, 18816, 123750, 20000 }, { 0, 0, 0, 0 }, }; static const struct tegra_hdmi_audio_config tegra_hdmi_audio_192k[] = { { 25200000, 24576, 25200, 24000 }, { 27000000, 24576, 27000, 24000 }, { 74250000, 24576, 74250, 24000 }, { 148500000, 24576, 148500, 24000 }, { 0, 0, 0, 0 }, }; struct tmds_config { unsigned int pclk; u32 pll0; u32 pll1; u32 pe_current; u32 drive_current; }; static const struct tmds_config tegra2_tmds_config[] = { { /* slow pixel clock modes */ .pclk = 27000000, .pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) | SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(0) | SOR_PLL_TX_REG_LOAD(3), .pll1 = SOR_PLL_TMDS_TERM_ENABLE, .pe_current = PE_CURRENT0(PE_CURRENT_0_0_mA) | PE_CURRENT1(PE_CURRENT_0_0_mA) | PE_CURRENT2(PE_CURRENT_0_0_mA) | PE_CURRENT3(PE_CURRENT_0_0_mA), .drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_7_125_mA) | DRIVE_CURRENT_LANE1(DRIVE_CURRENT_7_125_mA) | DRIVE_CURRENT_LANE2(DRIVE_CURRENT_7_125_mA) | DRIVE_CURRENT_LANE3(DRIVE_CURRENT_7_125_mA), }, { /* high pixel clock modes */ .pclk = UINT_MAX, .pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) | SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(1) | SOR_PLL_TX_REG_LOAD(3), .pll1 = SOR_PLL_TMDS_TERM_ENABLE | SOR_PLL_PE_EN, .pe_current = PE_CURRENT0(PE_CURRENT_6_0_mA) | PE_CURRENT1(PE_CURRENT_6_0_mA) | PE_CURRENT2(PE_CURRENT_6_0_mA) | PE_CURRENT3(PE_CURRENT_6_0_mA), .drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_7_125_mA) | DRIVE_CURRENT_LANE1(DRIVE_CURRENT_7_125_mA) | DRIVE_CURRENT_LANE2(DRIVE_CURRENT_7_125_mA) | DRIVE_CURRENT_LANE3(DRIVE_CURRENT_7_125_mA), }, }; static const struct tmds_config tegra3_tmds_config[] = { { /* 480p modes */ .pclk = 27000000, .pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) | SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(0) | SOR_PLL_TX_REG_LOAD(0), .pll1 = SOR_PLL_TMDS_TERM_ENABLE, .pe_current = PE_CURRENT0(PE_CURRENT_0_0_mA) | PE_CURRENT1(PE_CURRENT_0_0_mA) | PE_CURRENT2(PE_CURRENT_0_0_mA) | PE_CURRENT3(PE_CURRENT_0_0_mA), .drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_5_250_mA) | DRIVE_CURRENT_LANE1(DRIVE_CURRENT_5_250_mA) | DRIVE_CURRENT_LANE2(DRIVE_CURRENT_5_250_mA) | DRIVE_CURRENT_LANE3(DRIVE_CURRENT_5_250_mA), }, { /* 720p modes */ .pclk = 74250000, .pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) | SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(1) | SOR_PLL_TX_REG_LOAD(0), .pll1 = SOR_PLL_TMDS_TERM_ENABLE | SOR_PLL_PE_EN, .pe_current = PE_CURRENT0(PE_CURRENT_5_0_mA) | PE_CURRENT1(PE_CURRENT_5_0_mA) | PE_CURRENT2(PE_CURRENT_5_0_mA) | PE_CURRENT3(PE_CURRENT_5_0_mA), .drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_5_250_mA) | DRIVE_CURRENT_LANE1(DRIVE_CURRENT_5_250_mA) | DRIVE_CURRENT_LANE2(DRIVE_CURRENT_5_250_mA) | DRIVE_CURRENT_LANE3(DRIVE_CURRENT_5_250_mA), }, { /* 1080p modes */ .pclk = UINT_MAX, .pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) | SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(3) | SOR_PLL_TX_REG_LOAD(0), .pll1 = SOR_PLL_TMDS_TERM_ENABLE | SOR_PLL_PE_EN, .pe_current = PE_CURRENT0(PE_CURRENT_5_0_mA) | PE_CURRENT1(PE_CURRENT_5_0_mA) | PE_CURRENT2(PE_CURRENT_5_0_mA) | PE_CURRENT3(PE_CURRENT_5_0_mA), .drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_5_250_mA) | DRIVE_CURRENT_LANE1(DRIVE_CURRENT_5_250_mA) | DRIVE_CURRENT_LANE2(DRIVE_CURRENT_5_250_mA) | DRIVE_CURRENT_LANE3(DRIVE_CURRENT_5_250_mA), }, }; static const struct tegra_hdmi_audio_config * tegra_hdmi_get_audio_config(unsigned int audio_freq, unsigned int pclk) { const struct tegra_hdmi_audio_config *table; switch (audio_freq) { case 32000: table = tegra_hdmi_audio_32k; break; case 44100: table = tegra_hdmi_audio_44_1k; break; case 48000: table = tegra_hdmi_audio_48k; break; case 88200: table = tegra_hdmi_audio_88_2k; break; case 96000: table = tegra_hdmi_audio_96k; break; case 176400: table = tegra_hdmi_audio_176_4k; break; case 192000: table = tegra_hdmi_audio_192k; break; default: return NULL; } while (table->pclk) { if (table->pclk == pclk) return table; table++; } return NULL; } static void tegra_hdmi_setup_audio_fs_tables(struct tegra_hdmi *hdmi) { const unsigned int freqs[] = { 32000, 44100, 48000, 88200, 96000, 176400, 192000 }; unsigned int i; for (i = 0; i < ARRAY_SIZE(freqs); i++) { unsigned int f = freqs[i]; unsigned int eight_half; unsigned long value; unsigned int delta; if (f > 96000) delta = 2; else if (f > 480000) delta = 6; else delta = 9; eight_half = (8 * HDMI_AUDIOCLK_FREQ) / (f * 128); value = AUDIO_FS_LOW(eight_half - delta) | AUDIO_FS_HIGH(eight_half + delta); tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_FS(i)); } } static int tegra_hdmi_setup_audio(struct tegra_hdmi *hdmi, unsigned int pclk) { struct device_node *node = hdmi->dev->of_node; const struct tegra_hdmi_audio_config *config; unsigned int offset = 0; unsigned long value; switch (hdmi->audio_source) { case HDA: value = AUDIO_CNTRL0_SOURCE_SELECT_HDAL; break; case SPDIF: value = AUDIO_CNTRL0_SOURCE_SELECT_SPDIF; break; default: value = AUDIO_CNTRL0_SOURCE_SELECT_AUTO; break; } if (of_device_is_compatible(node, "nvidia,tegra30-hdmi")) { value |= AUDIO_CNTRL0_ERROR_TOLERANCE(6) | AUDIO_CNTRL0_FRAMES_PER_BLOCK(0xc0); tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_CNTRL0); } else { value |= AUDIO_CNTRL0_INJECT_NULLSMPL; tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_AUDIO_CNTRL0); value = AUDIO_CNTRL0_ERROR_TOLERANCE(6) | AUDIO_CNTRL0_FRAMES_PER_BLOCK(0xc0); tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_CNTRL0); } config = tegra_hdmi_get_audio_config(hdmi->audio_freq, pclk); if (!config) { dev_err(hdmi->dev, "cannot set audio to %u at %u pclk\n", hdmi->audio_freq, pclk); return -EINVAL; } tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_HDMI_ACR_CTRL); value = AUDIO_N_RESETF | AUDIO_N_GENERATE_ALTERNATE | AUDIO_N_VALUE(config->n - 1); tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_N); tegra_hdmi_writel(hdmi, ACR_SUBPACK_N(config->n) | ACR_ENABLE, HDMI_NV_PDISP_HDMI_ACR_0441_SUBPACK_HIGH); value = ACR_SUBPACK_CTS(config->cts); tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_ACR_0441_SUBPACK_LOW); value = SPARE_HW_CTS | SPARE_FORCE_SW_CTS | SPARE_CTS_RESET_VAL(1); tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_SPARE); value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_AUDIO_N); value &= ~AUDIO_N_RESETF; tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_N); if (of_device_is_compatible(node, "nvidia,tegra30-hdmi")) { switch (hdmi->audio_freq) { case 32000: offset = HDMI_NV_PDISP_SOR_AUDIO_AVAL_0320; break; case 44100: offset = HDMI_NV_PDISP_SOR_AUDIO_AVAL_0441; break; case 48000: offset = HDMI_NV_PDISP_SOR_AUDIO_AVAL_0480; break; case 88200: offset = HDMI_NV_PDISP_SOR_AUDIO_AVAL_0882; break; case 96000: offset = HDMI_NV_PDISP_SOR_AUDIO_AVAL_0960; break; case 176400: offset = HDMI_NV_PDISP_SOR_AUDIO_AVAL_1764; break; case 192000: offset = HDMI_NV_PDISP_SOR_AUDIO_AVAL_1920; break; } tegra_hdmi_writel(hdmi, config->aval, offset); } tegra_hdmi_setup_audio_fs_tables(hdmi); return 0; } static inline unsigned long tegra_hdmi_subpack(const u8 *ptr, size_t size) { unsigned long value = 0; size_t i; for (i = size; i > 0; i--) value = (value << 8) | ptr[i - 1]; return value; } static void tegra_hdmi_write_infopack(struct tegra_hdmi *hdmi, const void *data, size_t size) { const u8 *ptr = data; unsigned long offset; unsigned long value; size_t i, j; switch (ptr[0]) { case HDMI_INFOFRAME_TYPE_AVI: offset = HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_HEADER; break; case HDMI_INFOFRAME_TYPE_AUDIO: offset = HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_HEADER; break; case HDMI_INFOFRAME_TYPE_VENDOR: offset = HDMI_NV_PDISP_HDMI_GENERIC_HEADER; break; default: dev_err(hdmi->dev, "unsupported infoframe type: %02x\n", ptr[0]); return; } value = INFOFRAME_HEADER_TYPE(ptr[0]) | INFOFRAME_HEADER_VERSION(ptr[1]) | INFOFRAME_HEADER_LEN(ptr[2]); tegra_hdmi_writel(hdmi, value, offset); offset++; /* * Each subpack contains 7 bytes, divided into: * - subpack_low: bytes 0 - 3 * - subpack_high: bytes 4 - 6 (with byte 7 padded to 0x00) */ for (i = 3, j = 0; i < size; i += 7, j += 8) { size_t rem = size - i, num = min_t(size_t, rem, 4); value = tegra_hdmi_subpack(&ptr[i], num); tegra_hdmi_writel(hdmi, value, offset++); num = min_t(size_t, rem - num, 3); value = tegra_hdmi_subpack(&ptr[i + 4], num); tegra_hdmi_writel(hdmi, value, offset++); } } static void tegra_hdmi_setup_avi_infoframe(struct tegra_hdmi *hdmi, struct drm_display_mode *mode) { struct hdmi_avi_infoframe frame; u8 buffer[17]; ssize_t err; if (hdmi->dvi) { tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_CTRL); return; } err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode); if (err < 0) { dev_err(hdmi->dev, "failed to setup AVI infoframe: %zd\n", err); return; } err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer)); if (err < 0) { dev_err(hdmi->dev, "failed to pack AVI infoframe: %zd\n", err); return; } tegra_hdmi_write_infopack(hdmi, buffer, err); tegra_hdmi_writel(hdmi, INFOFRAME_CTRL_ENABLE, HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_CTRL); } static void tegra_hdmi_setup_audio_infoframe(struct tegra_hdmi *hdmi) { struct hdmi_audio_infoframe frame; u8 buffer[14]; ssize_t err; if (hdmi->dvi) { tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_CTRL); return; } err = hdmi_audio_infoframe_init(&frame); if (err < 0) { dev_err(hdmi->dev, "failed to initialize audio infoframe: %d\n", err); return; } frame.channels = 2; err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer)); if (err < 0) { dev_err(hdmi->dev, "failed to pack audio infoframe: %zd\n", err); return; } /* * The audio infoframe has only one set of subpack registers, so the * infoframe needs to be truncated. One set of subpack registers can * contain 7 bytes. Including the 3 byte header only the first 10 * bytes can be programmed. */ tegra_hdmi_write_infopack(hdmi, buffer, min(10, err)); tegra_hdmi_writel(hdmi, INFOFRAME_CTRL_ENABLE, HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_CTRL); } static void tegra_hdmi_setup_stereo_infoframe(struct tegra_hdmi *hdmi) { struct hdmi_vendor_infoframe frame; unsigned long value; u8 buffer[10]; ssize_t err; if (!hdmi->stereo) { value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_GENERIC_CTRL); value &= ~GENERIC_CTRL_ENABLE; tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_GENERIC_CTRL); return; } hdmi_vendor_infoframe_init(&frame); frame.s3d_struct = HDMI_3D_STRUCTURE_FRAME_PACKING; err = hdmi_vendor_infoframe_pack(&frame, buffer, sizeof(buffer)); if (err < 0) { dev_err(hdmi->dev, "failed to pack vendor infoframe: %zd\n", err); return; } tegra_hdmi_write_infopack(hdmi, buffer, err); value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_GENERIC_CTRL); value |= GENERIC_CTRL_ENABLE; tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_GENERIC_CTRL); } static void tegra_hdmi_setup_tmds(struct tegra_hdmi *hdmi, const struct tmds_config *tmds) { unsigned long value; tegra_hdmi_writel(hdmi, tmds->pll0, HDMI_NV_PDISP_SOR_PLL0); tegra_hdmi_writel(hdmi, tmds->pll1, HDMI_NV_PDISP_SOR_PLL1); tegra_hdmi_writel(hdmi, tmds->pe_current, HDMI_NV_PDISP_PE_CURRENT); value = tmds->drive_current | DRIVE_CURRENT_FUSE_OVERRIDE; tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_LANE_DRIVE_CURRENT); } static int tegra_output_hdmi_enable(struct tegra_output *output) { unsigned int h_sync_width, h_front_porch, h_back_porch, i, rekey; struct tegra_dc *dc = to_tegra_dc(output->encoder.crtc); struct drm_display_mode *mode = &dc->base.mode; struct tegra_hdmi *hdmi = to_hdmi(output); struct device_node *node = hdmi->dev->of_node; unsigned int pulse_start, div82, pclk; const struct tmds_config *tmds; unsigned int num_tmds; unsigned long value; int retries = 1000; int err; pclk = mode->clock * 1000; h_sync_width = mode->hsync_end - mode->hsync_start; h_back_porch = mode->htotal - mode->hsync_end; h_front_porch = mode->hsync_start - mode->hdisplay; err = regulator_enable(hdmi->vdd); if (err < 0) { dev_err(hdmi->dev, "failed to enable VDD regulator: %d\n", err); return err; } err = regulator_enable(hdmi->pll); if (err < 0) { dev_err(hdmi->dev, "failed to enable PLL regulator: %d\n", err); return err; } /* * This assumes that the display controller will divide its parent * clock by 2 to generate the pixel clock. */ err = tegra_output_setup_clock(output, hdmi->clk, pclk * 2); if (err < 0) { dev_err(hdmi->dev, "failed to setup clock: %d\n", err); return err; } err = clk_set_rate(hdmi->clk, pclk); if (err < 0) return err; err = clk_enable(hdmi->clk); if (err < 0) { dev_err(hdmi->dev, "failed to enable clock: %d\n", err); return err; } tegra_periph_reset_assert(hdmi->clk); usleep_range(1000, 2000); tegra_periph_reset_deassert(hdmi->clk); tegra_dc_writel(dc, VSYNC_H_POSITION(1), DC_DISP_DISP_TIMING_OPTIONS); tegra_dc_writel(dc, DITHER_CONTROL_DISABLE | BASE_COLOR_SIZE888, DC_DISP_DISP_COLOR_CONTROL); /* video_preamble uses h_pulse2 */ pulse_start = 1 + h_sync_width + h_back_porch - 10; tegra_dc_writel(dc, H_PULSE_2_ENABLE, DC_DISP_DISP_SIGNAL_OPTIONS0); value = PULSE_MODE_NORMAL | PULSE_POLARITY_HIGH | PULSE_QUAL_VACTIVE | PULSE_LAST_END_A; tegra_dc_writel(dc, value, DC_DISP_H_PULSE2_CONTROL); value = PULSE_START(pulse_start) | PULSE_END(pulse_start + 8); tegra_dc_writel(dc, value, DC_DISP_H_PULSE2_POSITION_A); value = VSYNC_WINDOW_END(0x210) | VSYNC_WINDOW_START(0x200) | VSYNC_WINDOW_ENABLE; tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_VSYNC_WINDOW); if (dc->pipe) value = HDMI_SRC_DISPLAYB; else value = HDMI_SRC_DISPLAYA; if ((mode->hdisplay == 720) && ((mode->vdisplay == 480) || (mode->vdisplay == 576))) tegra_hdmi_writel(hdmi, value | ARM_VIDEO_RANGE_FULL, HDMI_NV_PDISP_INPUT_CONTROL); else tegra_hdmi_writel(hdmi, value | ARM_VIDEO_RANGE_LIMITED, HDMI_NV_PDISP_INPUT_CONTROL); div82 = clk_get_rate(hdmi->clk) / 1000000 * 4; value = SOR_REFCLK_DIV_INT(div82 >> 2) | SOR_REFCLK_DIV_FRAC(div82); tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_REFCLK); if (!hdmi->dvi) { err = tegra_hdmi_setup_audio(hdmi, pclk); if (err < 0) hdmi->dvi = true; } if (of_device_is_compatible(node, "nvidia,tegra20-hdmi")) { /* * TODO: add ELD support */ } rekey = HDMI_REKEY_DEFAULT; value = HDMI_CTRL_REKEY(rekey); value |= HDMI_CTRL_MAX_AC_PACKET((h_sync_width + h_back_porch + h_front_porch - rekey - 18) / 32); if (!hdmi->dvi) value |= HDMI_CTRL_ENABLE; tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_CTRL); if (hdmi->dvi) tegra_hdmi_writel(hdmi, 0x0, HDMI_NV_PDISP_HDMI_GENERIC_CTRL); else tegra_hdmi_writel(hdmi, GENERIC_CTRL_AUDIO, HDMI_NV_PDISP_HDMI_GENERIC_CTRL); tegra_hdmi_setup_avi_infoframe(hdmi, mode); tegra_hdmi_setup_audio_infoframe(hdmi); tegra_hdmi_setup_stereo_infoframe(hdmi); /* TMDS CONFIG */ if (of_device_is_compatible(node, "nvidia,tegra30-hdmi")) { num_tmds = ARRAY_SIZE(tegra3_tmds_config); tmds = tegra3_tmds_config; } else { num_tmds = ARRAY_SIZE(tegra2_tmds_config); tmds = tegra2_tmds_config; } for (i = 0; i < num_tmds; i++) { if (pclk <= tmds[i].pclk) { tegra_hdmi_setup_tmds(hdmi, &tmds[i]); break; } } tegra_hdmi_writel(hdmi, SOR_SEQ_CTL_PU_PC(0) | SOR_SEQ_PU_PC_ALT(0) | SOR_SEQ_PD_PC(8) | SOR_SEQ_PD_PC_ALT(8), HDMI_NV_PDISP_SOR_SEQ_CTL); value = SOR_SEQ_INST_WAIT_TIME(1) | SOR_SEQ_INST_WAIT_UNITS_VSYNC | SOR_SEQ_INST_HALT | SOR_SEQ_INST_PIN_A_LOW | SOR_SEQ_INST_PIN_B_LOW | SOR_SEQ_INST_DRIVE_PWM_OUT_LO; tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_SEQ_INST(0)); tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_SEQ_INST(8)); value = 0x1c800; value &= ~SOR_CSTM_ROTCLK(~0); value |= SOR_CSTM_ROTCLK(2); tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_CSTM); tegra_dc_writel(dc, DISP_CTRL_MODE_STOP, DC_CMD_DISPLAY_COMMAND); tegra_dc_writel(dc, GENERAL_ACT_REQ << 8, DC_CMD_STATE_CONTROL); tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL); /* start SOR */ tegra_hdmi_writel(hdmi, SOR_PWR_NORMAL_STATE_PU | SOR_PWR_NORMAL_START_NORMAL | SOR_PWR_SAFE_STATE_PD | SOR_PWR_SETTING_NEW_TRIGGER, HDMI_NV_PDISP_SOR_PWR); tegra_hdmi_writel(hdmi, SOR_PWR_NORMAL_STATE_PU | SOR_PWR_NORMAL_START_NORMAL | SOR_PWR_SAFE_STATE_PD | SOR_PWR_SETTING_NEW_DONE, HDMI_NV_PDISP_SOR_PWR); do { BUG_ON(--retries < 0); value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_PWR); } while (value & SOR_PWR_SETTING_NEW_PENDING); value = SOR_STATE_ASY_CRCMODE_COMPLETE | SOR_STATE_ASY_OWNER_HEAD0 | SOR_STATE_ASY_SUBOWNER_BOTH | SOR_STATE_ASY_PROTOCOL_SINGLE_TMDS_A | SOR_STATE_ASY_DEPOL_POS; /* setup sync polarities */ if (mode->flags & DRM_MODE_FLAG_PHSYNC) value |= SOR_STATE_ASY_HSYNCPOL_POS; if (mode->flags & DRM_MODE_FLAG_NHSYNC) value |= SOR_STATE_ASY_HSYNCPOL_NEG; if (mode->flags & DRM_MODE_FLAG_PVSYNC) value |= SOR_STATE_ASY_VSYNCPOL_POS; if (mode->flags & DRM_MODE_FLAG_NVSYNC) value |= SOR_STATE_ASY_VSYNCPOL_NEG; tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_STATE2); value = SOR_STATE_ASY_HEAD_OPMODE_AWAKE | SOR_STATE_ASY_ORMODE_NORMAL; tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_STATE1); tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_SOR_STATE0); tegra_hdmi_writel(hdmi, SOR_STATE_UPDATE, HDMI_NV_PDISP_SOR_STATE0); tegra_hdmi_writel(hdmi, value | SOR_STATE_ATTACHED, HDMI_NV_PDISP_SOR_STATE1); tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_SOR_STATE0); tegra_dc_writel(dc, HDMI_ENABLE, DC_DISP_DISP_WIN_OPTIONS); value = PW0_ENABLE | PW1_ENABLE | PW2_ENABLE | PW3_ENABLE | PW4_ENABLE | PM0_ENABLE | PM1_ENABLE; tegra_dc_writel(dc, value, DC_CMD_DISPLAY_POWER_CONTROL); value = DISP_CTRL_MODE_C_DISPLAY; tegra_dc_writel(dc, value, DC_CMD_DISPLAY_COMMAND); tegra_dc_writel(dc, GENERAL_ACT_REQ << 8, DC_CMD_STATE_CONTROL); tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL); /* TODO: add HDCP support */ return 0; } static int tegra_output_hdmi_disable(struct tegra_output *output) { struct tegra_hdmi *hdmi = to_hdmi(output); tegra_periph_reset_assert(hdmi->clk); clk_disable(hdmi->clk); regulator_disable(hdmi->pll); regulator_disable(hdmi->vdd); return 0; } static int tegra_output_hdmi_setup_clock(struct tegra_output *output, struct clk *clk, unsigned long pclk) { struct tegra_hdmi *hdmi = to_hdmi(output); struct clk *base; int err; err = clk_set_parent(clk, hdmi->clk_parent); if (err < 0) { dev_err(output->dev, "failed to set parent: %d\n", err); return err; } base = clk_get_parent(hdmi->clk_parent); /* * This assumes that the parent clock is pll_d_out0 or pll_d2_out * respectively, each of which divides the base pll_d by 2. */ err = clk_set_rate(base, pclk * 2); if (err < 0) dev_err(output->dev, "failed to set base clock rate to %lu Hz\n", pclk * 2); return 0; } static int tegra_output_hdmi_check_mode(struct tegra_output *output, struct drm_display_mode *mode, enum drm_mode_status *status) { struct tegra_hdmi *hdmi = to_hdmi(output); unsigned long pclk = mode->clock * 1000; struct clk *parent; long err; parent = clk_get_parent(hdmi->clk_parent); err = clk_round_rate(parent, pclk * 4); if (err < 0) *status = MODE_NOCLOCK; else *status = MODE_OK; return 0; } static const struct tegra_output_ops hdmi_ops = { .enable = tegra_output_hdmi_enable, .disable = tegra_output_hdmi_disable, .setup_clock = tegra_output_hdmi_setup_clock, .check_mode = tegra_output_hdmi_check_mode, }; static int tegra_hdmi_show_regs(struct seq_file *s, void *data) { struct drm_info_node *node = s->private; struct tegra_hdmi *hdmi = node->info_ent->data; int err; err = clk_enable(hdmi->clk); if (err) return err; #define DUMP_REG(name) \ seq_printf(s, "%-56s %#05x %08lx\n", #name, name, \ tegra_hdmi_readl(hdmi, name)) DUMP_REG(HDMI_CTXSW); DUMP_REG(HDMI_NV_PDISP_SOR_STATE0); DUMP_REG(HDMI_NV_PDISP_SOR_STATE1); DUMP_REG(HDMI_NV_PDISP_SOR_STATE2); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_AN_MSB); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_AN_LSB); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CN_MSB); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CN_LSB); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_AKSV_MSB); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_AKSV_LSB); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_BKSV_MSB); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_BKSV_LSB); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CKSV_MSB); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CKSV_LSB); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_DKSV_MSB); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_DKSV_LSB); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CTRL); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CMODE); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_MPRIME_MSB); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_MPRIME_LSB); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_SPRIME_MSB); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_SPRIME_LSB2); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_SPRIME_LSB1); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_RI); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CS_MSB); DUMP_REG(HDMI_NV_PDISP_RG_HDCP_CS_LSB); DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_EMU0); DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_EMU_RDATA0); DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_EMU1); DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_EMU2); DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_CTRL); DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_STATUS); DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_HEADER); DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_SUBPACK0_LOW); DUMP_REG(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_SUBPACK0_HIGH); DUMP_REG(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_CTRL); DUMP_REG(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_STATUS); DUMP_REG(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_HEADER); DUMP_REG(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_SUBPACK0_LOW); DUMP_REG(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_SUBPACK0_HIGH); DUMP_REG(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_SUBPACK1_LOW); DUMP_REG(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_SUBPACK1_HIGH); DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_CTRL); DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_STATUS); DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_HEADER); DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK0_LOW); DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK0_HIGH); DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK1_LOW); DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK1_HIGH); DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK2_LOW); DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK2_HIGH); DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK3_LOW); DUMP_REG(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK3_HIGH); DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_CTRL); DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0320_SUBPACK_LOW); DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0320_SUBPACK_HIGH); DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0441_SUBPACK_LOW); DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0441_SUBPACK_HIGH); DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0882_SUBPACK_LOW); DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0882_SUBPACK_HIGH); DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_1764_SUBPACK_LOW); DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_1764_SUBPACK_HIGH); DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0480_SUBPACK_LOW); DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0480_SUBPACK_HIGH); DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0960_SUBPACK_LOW); DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_0960_SUBPACK_HIGH); DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_1920_SUBPACK_LOW); DUMP_REG(HDMI_NV_PDISP_HDMI_ACR_1920_SUBPACK_HIGH); DUMP_REG(HDMI_NV_PDISP_HDMI_CTRL); DUMP_REG(HDMI_NV_PDISP_HDMI_VSYNC_KEEPOUT); DUMP_REG(HDMI_NV_PDISP_HDMI_VSYNC_WINDOW); DUMP_REG(HDMI_NV_PDISP_HDMI_GCP_CTRL); DUMP_REG(HDMI_NV_PDISP_HDMI_GCP_STATUS); DUMP_REG(HDMI_NV_PDISP_HDMI_GCP_SUBPACK); DUMP_REG(HDMI_NV_PDISP_HDMI_CHANNEL_STATUS1); DUMP_REG(HDMI_NV_PDISP_HDMI_CHANNEL_STATUS2); DUMP_REG(HDMI_NV_PDISP_HDMI_EMU0); DUMP_REG(HDMI_NV_PDISP_HDMI_EMU1); DUMP_REG(HDMI_NV_PDISP_HDMI_EMU1_RDATA); DUMP_REG(HDMI_NV_PDISP_HDMI_SPARE); DUMP_REG(HDMI_NV_PDISP_HDMI_SPDIF_CHN_STATUS1); DUMP_REG(HDMI_NV_PDISP_HDMI_SPDIF_CHN_STATUS2); DUMP_REG(HDMI_NV_PDISP_HDMI_HDCPRIF_ROM_CTRL); DUMP_REG(HDMI_NV_PDISP_SOR_CAP); DUMP_REG(HDMI_NV_PDISP_SOR_PWR); DUMP_REG(HDMI_NV_PDISP_SOR_TEST); DUMP_REG(HDMI_NV_PDISP_SOR_PLL0); DUMP_REG(HDMI_NV_PDISP_SOR_PLL1); DUMP_REG(HDMI_NV_PDISP_SOR_PLL2); DUMP_REG(HDMI_NV_PDISP_SOR_CSTM); DUMP_REG(HDMI_NV_PDISP_SOR_LVDS); DUMP_REG(HDMI_NV_PDISP_SOR_CRCA); DUMP_REG(HDMI_NV_PDISP_SOR_CRCB); DUMP_REG(HDMI_NV_PDISP_SOR_BLANK); DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_CTL); DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(0)); DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(1)); DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(2)); DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(3)); DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(4)); DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(5)); DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(6)); DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(7)); DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(8)); DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(9)); DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(10)); DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(11)); DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(12)); DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(13)); DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(14)); DUMP_REG(HDMI_NV_PDISP_SOR_SEQ_INST(15)); DUMP_REG(HDMI_NV_PDISP_SOR_VCRCA0); DUMP_REG(HDMI_NV_PDISP_SOR_VCRCA1); DUMP_REG(HDMI_NV_PDISP_SOR_CCRCA0); DUMP_REG(HDMI_NV_PDISP_SOR_CCRCA1); DUMP_REG(HDMI_NV_PDISP_SOR_EDATAA0); DUMP_REG(HDMI_NV_PDISP_SOR_EDATAA1); DUMP_REG(HDMI_NV_PDISP_SOR_COUNTA0); DUMP_REG(HDMI_NV_PDISP_SOR_COUNTA1); DUMP_REG(HDMI_NV_PDISP_SOR_DEBUGA0); DUMP_REG(HDMI_NV_PDISP_SOR_DEBUGA1); DUMP_REG(HDMI_NV_PDISP_SOR_TRIG); DUMP_REG(HDMI_NV_PDISP_SOR_MSCHECK); DUMP_REG(HDMI_NV_PDISP_SOR_LANE_DRIVE_CURRENT); DUMP_REG(HDMI_NV_PDISP_AUDIO_DEBUG0); DUMP_REG(HDMI_NV_PDISP_AUDIO_DEBUG1); DUMP_REG(HDMI_NV_PDISP_AUDIO_DEBUG2); DUMP_REG(HDMI_NV_PDISP_AUDIO_FS(0)); DUMP_REG(HDMI_NV_PDISP_AUDIO_FS(1)); DUMP_REG(HDMI_NV_PDISP_AUDIO_FS(2)); DUMP_REG(HDMI_NV_PDISP_AUDIO_FS(3)); DUMP_REG(HDMI_NV_PDISP_AUDIO_FS(4)); DUMP_REG(HDMI_NV_PDISP_AUDIO_FS(5)); DUMP_REG(HDMI_NV_PDISP_AUDIO_FS(6)); DUMP_REG(HDMI_NV_PDISP_AUDIO_PULSE_WIDTH); DUMP_REG(HDMI_NV_PDISP_AUDIO_THRESHOLD); DUMP_REG(HDMI_NV_PDISP_AUDIO_CNTRL0); DUMP_REG(HDMI_NV_PDISP_AUDIO_N); DUMP_REG(HDMI_NV_PDISP_HDCPRIF_ROM_TIMING); DUMP_REG(HDMI_NV_PDISP_SOR_REFCLK); DUMP_REG(HDMI_NV_PDISP_CRC_CONTROL); DUMP_REG(HDMI_NV_PDISP_INPUT_CONTROL); DUMP_REG(HDMI_NV_PDISP_SCRATCH); DUMP_REG(HDMI_NV_PDISP_PE_CURRENT); DUMP_REG(HDMI_NV_PDISP_KEY_CTRL); DUMP_REG(HDMI_NV_PDISP_KEY_DEBUG0); DUMP_REG(HDMI_NV_PDISP_KEY_DEBUG1); DUMP_REG(HDMI_NV_PDISP_KEY_DEBUG2); DUMP_REG(HDMI_NV_PDISP_KEY_HDCP_KEY_0); DUMP_REG(HDMI_NV_PDISP_KEY_HDCP_KEY_1); DUMP_REG(HDMI_NV_PDISP_KEY_HDCP_KEY_2); DUMP_REG(HDMI_NV_PDISP_KEY_HDCP_KEY_3); DUMP_REG(HDMI_NV_PDISP_KEY_HDCP_KEY_TRIG); DUMP_REG(HDMI_NV_PDISP_KEY_SKEY_INDEX); DUMP_REG(HDMI_NV_PDISP_SOR_AUDIO_CNTRL0); DUMP_REG(HDMI_NV_PDISP_SOR_AUDIO_HDA_ELD_BUFWR); DUMP_REG(HDMI_NV_PDISP_SOR_AUDIO_HDA_PRESENSE); #undef DUMP_REG clk_disable(hdmi->clk); return 0; } static struct drm_info_list debugfs_files[] = { { "regs", tegra_hdmi_show_regs, 0, NULL }, }; static int tegra_hdmi_debugfs_init(struct tegra_hdmi *hdmi, struct drm_minor *minor) { unsigned int i; int err; hdmi->debugfs = debugfs_create_dir("hdmi", minor->debugfs_root); if (!hdmi->debugfs) return -ENOMEM; hdmi->debugfs_files = kmemdup(debugfs_files, sizeof(debugfs_files), GFP_KERNEL); if (!hdmi->debugfs_files) { err = -ENOMEM; goto remove; } for (i = 0; i < ARRAY_SIZE(debugfs_files); i++) hdmi->debugfs_files[i].data = hdmi; err = drm_debugfs_create_files(hdmi->debugfs_files, ARRAY_SIZE(debugfs_files), hdmi->debugfs, minor); if (err < 0) goto free; hdmi->minor = minor; return 0; free: kfree(hdmi->debugfs_files); hdmi->debugfs_files = NULL; remove: debugfs_remove(hdmi->debugfs); hdmi->debugfs = NULL; return err; } static int tegra_hdmi_debugfs_exit(struct tegra_hdmi *hdmi) { drm_debugfs_remove_files(hdmi->debugfs_files, ARRAY_SIZE(debugfs_files), hdmi->minor); hdmi->minor = NULL; kfree(hdmi->debugfs_files); hdmi->debugfs_files = NULL; debugfs_remove(hdmi->debugfs); hdmi->debugfs = NULL; return 0; } static int tegra_hdmi_drm_init(struct host1x_client *client, struct drm_device *drm) { struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client); int err; hdmi->output.type = TEGRA_OUTPUT_HDMI; hdmi->output.dev = client->dev; hdmi->output.ops = &hdmi_ops; err = tegra_output_init(drm, &hdmi->output); if (err < 0) { dev_err(client->dev, "output setup failed: %d\n", err); return err; } if (IS_ENABLED(CONFIG_DEBUG_FS)) { err = tegra_hdmi_debugfs_init(hdmi, drm->primary); if (err < 0) dev_err(client->dev, "debugfs setup failed: %d\n", err); } return 0; } static int tegra_hdmi_drm_exit(struct host1x_client *client) { struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client); int err; if (IS_ENABLED(CONFIG_DEBUG_FS)) { err = tegra_hdmi_debugfs_exit(hdmi); if (err < 0) dev_err(client->dev, "debugfs cleanup failed: %d\n", err); } err = tegra_output_disable(&hdmi->output); if (err < 0) { dev_err(client->dev, "output failed to disable: %d\n", err); return err; } err = tegra_output_exit(&hdmi->output); if (err < 0) { dev_err(client->dev, "output cleanup failed: %d\n", err); return err; } return 0; } static const struct host1x_client_ops hdmi_client_ops = { .drm_init = tegra_hdmi_drm_init, .drm_exit = tegra_hdmi_drm_exit, }; static int tegra_hdmi_probe(struct platform_device *pdev) { struct tegra_drm *tegra = host1x_get_drm_data(pdev->dev.parent); struct tegra_hdmi *hdmi; struct resource *regs; int err; hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL); if (!hdmi) return -ENOMEM; hdmi->dev = &pdev->dev; hdmi->audio_source = AUTO; hdmi->audio_freq = 44100; hdmi->stereo = false; hdmi->dvi = false; hdmi->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(hdmi->clk)) { dev_err(&pdev->dev, "failed to get clock\n"); return PTR_ERR(hdmi->clk); } err = clk_prepare(hdmi->clk); if (err < 0) return err; hdmi->clk_parent = devm_clk_get(&pdev->dev, "parent"); if (IS_ERR(hdmi->clk_parent)) return PTR_ERR(hdmi->clk_parent); err = clk_prepare(hdmi->clk_parent); if (err < 0) return err; err = clk_set_parent(hdmi->clk, hdmi->clk_parent); if (err < 0) { dev_err(&pdev->dev, "failed to setup clocks: %d\n", err); return err; } hdmi->vdd = devm_regulator_get(&pdev->dev, "vdd"); if (IS_ERR(hdmi->vdd)) { dev_err(&pdev->dev, "failed to get VDD regulator\n"); return PTR_ERR(hdmi->vdd); } hdmi->pll = devm_regulator_get(&pdev->dev, "pll"); if (IS_ERR(hdmi->pll)) { dev_err(&pdev->dev, "failed to get PLL regulator\n"); return PTR_ERR(hdmi->pll); } hdmi->output.dev = &pdev->dev; err = tegra_output_parse_dt(&hdmi->output); if (err < 0) return err; regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!regs) return -ENXIO; hdmi->regs = devm_ioremap_resource(&pdev->dev, regs); if (IS_ERR(hdmi->regs)) return PTR_ERR(hdmi->regs); err = platform_get_irq(pdev, 0); if (err < 0) return err; hdmi->irq = err; hdmi->client.ops = &hdmi_client_ops; INIT_LIST_HEAD(&hdmi->client.list); hdmi->client.dev = &pdev->dev; err = host1x_register_client(tegra, &hdmi->client); if (err < 0) { dev_err(&pdev->dev, "failed to register host1x client: %d\n", err); return err; } platform_set_drvdata(pdev, hdmi); return 0; } static int tegra_hdmi_remove(struct platform_device *pdev) { struct tegra_drm *tegra = host1x_get_drm_data(pdev->dev.parent); struct tegra_hdmi *hdmi = platform_get_drvdata(pdev); int err; err = host1x_unregister_client(tegra, &hdmi->client); if (err < 0) { dev_err(&pdev->dev, "failed to unregister host1x client: %d\n", err); return err; } clk_unprepare(hdmi->clk_parent); clk_unprepare(hdmi->clk); return 0; } static struct of_device_id tegra_hdmi_of_match[] = { { .compatible = "nvidia,tegra30-hdmi", }, { .compatible = "nvidia,tegra20-hdmi", }, { }, }; struct platform_driver tegra_hdmi_driver = { .driver = { .name = "tegra-hdmi", .owner = THIS_MODULE, .of_match_table = tegra_hdmi_of_match, }, .probe = tegra_hdmi_probe, .remove = tegra_hdmi_remove, };