/* * Copyright (c) 2014 MediaTek Inc. * Author: Jie Qiu * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "mtk_cec.h" #include "mtk_hdmi.h" #include "mtk_hdmi_regs.h" #define NCTS_BYTES 7 enum mtk_hdmi_clk_id { MTK_HDMI_CLK_HDMI_PIXEL, MTK_HDMI_CLK_HDMI_PLL, MTK_HDMI_CLK_AUD_BCLK, MTK_HDMI_CLK_AUD_SPDIF, MTK_HDMI_CLK_COUNT }; enum hdmi_aud_input_type { HDMI_AUD_INPUT_I2S = 0, HDMI_AUD_INPUT_SPDIF, }; enum hdmi_aud_i2s_fmt { HDMI_I2S_MODE_RJT_24BIT = 0, HDMI_I2S_MODE_RJT_16BIT, HDMI_I2S_MODE_LJT_24BIT, HDMI_I2S_MODE_LJT_16BIT, HDMI_I2S_MODE_I2S_24BIT, HDMI_I2S_MODE_I2S_16BIT }; enum hdmi_aud_mclk { HDMI_AUD_MCLK_128FS, HDMI_AUD_MCLK_192FS, HDMI_AUD_MCLK_256FS, HDMI_AUD_MCLK_384FS, HDMI_AUD_MCLK_512FS, HDMI_AUD_MCLK_768FS, HDMI_AUD_MCLK_1152FS, }; enum hdmi_aud_channel_type { HDMI_AUD_CHAN_TYPE_1_0 = 0, HDMI_AUD_CHAN_TYPE_1_1, HDMI_AUD_CHAN_TYPE_2_0, HDMI_AUD_CHAN_TYPE_2_1, HDMI_AUD_CHAN_TYPE_3_0, HDMI_AUD_CHAN_TYPE_3_1, HDMI_AUD_CHAN_TYPE_4_0, HDMI_AUD_CHAN_TYPE_4_1, HDMI_AUD_CHAN_TYPE_5_0, HDMI_AUD_CHAN_TYPE_5_1, HDMI_AUD_CHAN_TYPE_6_0, HDMI_AUD_CHAN_TYPE_6_1, HDMI_AUD_CHAN_TYPE_7_0, HDMI_AUD_CHAN_TYPE_7_1, HDMI_AUD_CHAN_TYPE_3_0_LRS, HDMI_AUD_CHAN_TYPE_3_1_LRS, HDMI_AUD_CHAN_TYPE_4_0_CLRS, HDMI_AUD_CHAN_TYPE_4_1_CLRS, HDMI_AUD_CHAN_TYPE_6_1_CS, HDMI_AUD_CHAN_TYPE_6_1_CH, HDMI_AUD_CHAN_TYPE_6_1_OH, HDMI_AUD_CHAN_TYPE_6_1_CHR, HDMI_AUD_CHAN_TYPE_7_1_LH_RH, HDMI_AUD_CHAN_TYPE_7_1_LSR_RSR, HDMI_AUD_CHAN_TYPE_7_1_LC_RC, HDMI_AUD_CHAN_TYPE_7_1_LW_RW, HDMI_AUD_CHAN_TYPE_7_1_LSD_RSD, HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS, HDMI_AUD_CHAN_TYPE_7_1_LHS_RHS, HDMI_AUD_CHAN_TYPE_7_1_CS_CH, HDMI_AUD_CHAN_TYPE_7_1_CS_OH, HDMI_AUD_CHAN_TYPE_7_1_CS_CHR, HDMI_AUD_CHAN_TYPE_7_1_CH_OH, HDMI_AUD_CHAN_TYPE_7_1_CH_CHR, HDMI_AUD_CHAN_TYPE_7_1_OH_CHR, HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS_LSR_RSR, HDMI_AUD_CHAN_TYPE_6_0_CS, HDMI_AUD_CHAN_TYPE_6_0_CH, HDMI_AUD_CHAN_TYPE_6_0_OH, HDMI_AUD_CHAN_TYPE_6_0_CHR, HDMI_AUD_CHAN_TYPE_7_0_LH_RH, HDMI_AUD_CHAN_TYPE_7_0_LSR_RSR, HDMI_AUD_CHAN_TYPE_7_0_LC_RC, HDMI_AUD_CHAN_TYPE_7_0_LW_RW, HDMI_AUD_CHAN_TYPE_7_0_LSD_RSD, HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS, HDMI_AUD_CHAN_TYPE_7_0_LHS_RHS, HDMI_AUD_CHAN_TYPE_7_0_CS_CH, HDMI_AUD_CHAN_TYPE_7_0_CS_OH, HDMI_AUD_CHAN_TYPE_7_0_CS_CHR, HDMI_AUD_CHAN_TYPE_7_0_CH_OH, HDMI_AUD_CHAN_TYPE_7_0_CH_CHR, HDMI_AUD_CHAN_TYPE_7_0_OH_CHR, HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS_LSR_RSR, HDMI_AUD_CHAN_TYPE_8_0_LH_RH_CS, HDMI_AUD_CHAN_TYPE_UNKNOWN = 0xFF }; enum hdmi_aud_channel_swap_type { HDMI_AUD_SWAP_LR, HDMI_AUD_SWAP_LFE_CC, HDMI_AUD_SWAP_LSRS, HDMI_AUD_SWAP_RLS_RRS, HDMI_AUD_SWAP_LR_STATUS, }; struct hdmi_audio_param { enum hdmi_audio_coding_type aud_codec; enum hdmi_audio_sample_size aud_sampe_size; enum hdmi_aud_input_type aud_input_type; enum hdmi_aud_i2s_fmt aud_i2s_fmt; enum hdmi_aud_mclk aud_mclk; enum hdmi_aud_channel_type aud_input_chan_type; struct hdmi_codec_params codec_params; }; struct mtk_hdmi { struct drm_bridge bridge; struct drm_bridge *next_bridge; struct drm_connector conn; struct device *dev; struct phy *phy; struct device *cec_dev; struct i2c_adapter *ddc_adpt; struct clk *clk[MTK_HDMI_CLK_COUNT]; struct drm_display_mode mode; bool dvi_mode; u32 min_clock; u32 max_clock; u32 max_hdisplay; u32 max_vdisplay; u32 ibias; u32 ibias_up; struct regmap *sys_regmap; unsigned int sys_offset; void __iomem *regs; enum hdmi_colorspace csp; struct hdmi_audio_param aud_param; bool audio_enable; bool powered; bool enabled; }; static inline struct mtk_hdmi *hdmi_ctx_from_bridge(struct drm_bridge *b) { return container_of(b, struct mtk_hdmi, bridge); } static inline struct mtk_hdmi *hdmi_ctx_from_conn(struct drm_connector *c) { return container_of(c, struct mtk_hdmi, conn); } static u32 mtk_hdmi_read(struct mtk_hdmi *hdmi, u32 offset) { return readl(hdmi->regs + offset); } static void mtk_hdmi_write(struct mtk_hdmi *hdmi, u32 offset, u32 val) { writel(val, hdmi->regs + offset); } static void mtk_hdmi_clear_bits(struct mtk_hdmi *hdmi, u32 offset, u32 bits) { void __iomem *reg = hdmi->regs + offset; u32 tmp; tmp = readl(reg); tmp &= ~bits; writel(tmp, reg); } static void mtk_hdmi_set_bits(struct mtk_hdmi *hdmi, u32 offset, u32 bits) { void __iomem *reg = hdmi->regs + offset; u32 tmp; tmp = readl(reg); tmp |= bits; writel(tmp, reg); } static void mtk_hdmi_mask(struct mtk_hdmi *hdmi, u32 offset, u32 val, u32 mask) { void __iomem *reg = hdmi->regs + offset; u32 tmp; tmp = readl(reg); tmp = (tmp & ~mask) | (val & mask); writel(tmp, reg); } static void mtk_hdmi_hw_vid_black(struct mtk_hdmi *hdmi, bool black) { mtk_hdmi_mask(hdmi, VIDEO_CFG_4, black ? GEN_RGB : NORMAL_PATH, VIDEO_SOURCE_SEL); } static void mtk_hdmi_hw_make_reg_writable(struct mtk_hdmi *hdmi, bool enable) { struct arm_smccc_res res; struct mtk_hdmi_phy *hdmi_phy = phy_get_drvdata(hdmi->phy); /* * MT8173 HDMI hardware has an output control bit to enable/disable HDMI * output. This bit can only be controlled in ARM supervisor mode. * The ARM trusted firmware provides an API for the HDMI driver to set * this control bit to enable HDMI output in supervisor mode. */ if (hdmi_phy->conf && hdmi_phy->conf->tz_disabled) regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20, 0x80008005, enable ? 0x80000005 : 0x8000); else arm_smccc_smc(MTK_SIP_SET_AUTHORIZED_SECURE_REG, 0x14000904, 0x80000000, 0, 0, 0, 0, 0, &res); regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20, HDMI_PCLK_FREE_RUN, enable ? HDMI_PCLK_FREE_RUN : 0); regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C, HDMI_ON | ANLG_ON, enable ? (HDMI_ON | ANLG_ON) : 0); } static void mtk_hdmi_hw_1p4_version_enable(struct mtk_hdmi *hdmi, bool enable) { regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20, HDMI2P0_EN, enable ? 0 : HDMI2P0_EN); } static void mtk_hdmi_hw_aud_mute(struct mtk_hdmi *hdmi) { mtk_hdmi_set_bits(hdmi, GRL_AUDIO_CFG, AUDIO_ZERO); } static void mtk_hdmi_hw_aud_unmute(struct mtk_hdmi *hdmi) { mtk_hdmi_clear_bits(hdmi, GRL_AUDIO_CFG, AUDIO_ZERO); } static void mtk_hdmi_hw_reset(struct mtk_hdmi *hdmi) { regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C, HDMI_RST, HDMI_RST); regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C, HDMI_RST, 0); mtk_hdmi_clear_bits(hdmi, GRL_CFG3, CFG3_CONTROL_PACKET_DELAY); regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C, ANLG_ON, ANLG_ON); } static void mtk_hdmi_hw_enable_notice(struct mtk_hdmi *hdmi, bool enable_notice) { mtk_hdmi_mask(hdmi, GRL_CFG2, enable_notice ? CFG2_NOTICE_EN : 0, CFG2_NOTICE_EN); } static void mtk_hdmi_hw_write_int_mask(struct mtk_hdmi *hdmi, u32 int_mask) { mtk_hdmi_write(hdmi, GRL_INT_MASK, int_mask); } static void mtk_hdmi_hw_enable_dvi_mode(struct mtk_hdmi *hdmi, bool enable) { mtk_hdmi_mask(hdmi, GRL_CFG1, enable ? CFG1_DVI : 0, CFG1_DVI); } static void mtk_hdmi_hw_send_info_frame(struct mtk_hdmi *hdmi, u8 *buffer, u8 len) { u32 ctrl_reg = GRL_CTRL; int i; u8 *frame_data; enum hdmi_infoframe_type frame_type; u8 frame_ver; u8 frame_len; u8 checksum; int ctrl_frame_en = 0; frame_type = *buffer; buffer += 1; frame_ver = *buffer; buffer += 1; frame_len = *buffer; buffer += 1; checksum = *buffer; buffer += 1; frame_data = buffer; dev_dbg(hdmi->dev, "frame_type:0x%x,frame_ver:0x%x,frame_len:0x%x,checksum:0x%x\n", frame_type, frame_ver, frame_len, checksum); switch (frame_type) { case HDMI_INFOFRAME_TYPE_AVI: ctrl_frame_en = CTRL_AVI_EN; ctrl_reg = GRL_CTRL; break; case HDMI_INFOFRAME_TYPE_SPD: ctrl_frame_en = CTRL_SPD_EN; ctrl_reg = GRL_CTRL; break; case HDMI_INFOFRAME_TYPE_AUDIO: ctrl_frame_en = CTRL_AUDIO_EN; ctrl_reg = GRL_CTRL; break; case HDMI_INFOFRAME_TYPE_VENDOR: ctrl_frame_en = VS_EN; ctrl_reg = GRL_ACP_ISRC_CTRL; break; } mtk_hdmi_clear_bits(hdmi, ctrl_reg, ctrl_frame_en); mtk_hdmi_write(hdmi, GRL_INFOFRM_TYPE, frame_type); mtk_hdmi_write(hdmi, GRL_INFOFRM_VER, frame_ver); mtk_hdmi_write(hdmi, GRL_INFOFRM_LNG, frame_len); mtk_hdmi_write(hdmi, GRL_IFM_PORT, checksum); for (i = 0; i < frame_len; i++) mtk_hdmi_write(hdmi, GRL_IFM_PORT, frame_data[i]); mtk_hdmi_set_bits(hdmi, ctrl_reg, ctrl_frame_en); } static void mtk_hdmi_hw_send_aud_packet(struct mtk_hdmi *hdmi, bool enable) { mtk_hdmi_mask(hdmi, GRL_SHIFT_R2, enable ? 0 : AUDIO_PACKET_OFF, AUDIO_PACKET_OFF); } static void mtk_hdmi_hw_config_sys(struct mtk_hdmi *hdmi) { regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20, HDMI_OUT_FIFO_EN | MHL_MODE_ON, 0); usleep_range(2000, 4000); regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20, HDMI_OUT_FIFO_EN | MHL_MODE_ON, HDMI_OUT_FIFO_EN); } static void mtk_hdmi_hw_set_deep_color_mode(struct mtk_hdmi *hdmi) { regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20, DEEP_COLOR_MODE_MASK | DEEP_COLOR_EN, COLOR_8BIT_MODE); } static void mtk_hdmi_hw_send_av_mute(struct mtk_hdmi *hdmi) { mtk_hdmi_clear_bits(hdmi, GRL_CFG4, CTRL_AVMUTE); usleep_range(2000, 4000); mtk_hdmi_set_bits(hdmi, GRL_CFG4, CTRL_AVMUTE); } static void mtk_hdmi_hw_send_av_unmute(struct mtk_hdmi *hdmi) { mtk_hdmi_mask(hdmi, GRL_CFG4, CFG4_AV_UNMUTE_EN, CFG4_AV_UNMUTE_EN | CFG4_AV_UNMUTE_SET); usleep_range(2000, 4000); mtk_hdmi_mask(hdmi, GRL_CFG4, CFG4_AV_UNMUTE_SET, CFG4_AV_UNMUTE_EN | CFG4_AV_UNMUTE_SET); } static void mtk_hdmi_hw_ncts_enable(struct mtk_hdmi *hdmi, bool on) { mtk_hdmi_mask(hdmi, GRL_CTS_CTRL, on ? 0 : CTS_CTRL_SOFT, CTS_CTRL_SOFT); } static void mtk_hdmi_hw_ncts_auto_write_enable(struct mtk_hdmi *hdmi, bool enable) { mtk_hdmi_mask(hdmi, GRL_CTS_CTRL, enable ? NCTS_WRI_ANYTIME : 0, NCTS_WRI_ANYTIME); } static void mtk_hdmi_hw_msic_setting(struct mtk_hdmi *hdmi, struct drm_display_mode *mode) { mtk_hdmi_clear_bits(hdmi, GRL_CFG4, CFG4_MHL_MODE); if (mode->flags & DRM_MODE_FLAG_INTERLACE && mode->clock == 74250 && mode->vdisplay == 1080) mtk_hdmi_clear_bits(hdmi, GRL_CFG2, CFG2_MHL_DE_SEL); else mtk_hdmi_set_bits(hdmi, GRL_CFG2, CFG2_MHL_DE_SEL); } static void mtk_hdmi_hw_aud_set_channel_swap(struct mtk_hdmi *hdmi, enum hdmi_aud_channel_swap_type swap) { u8 swap_bit; switch (swap) { case HDMI_AUD_SWAP_LR: swap_bit = LR_SWAP; break; case HDMI_AUD_SWAP_LFE_CC: swap_bit = LFE_CC_SWAP; break; case HDMI_AUD_SWAP_LSRS: swap_bit = LSRS_SWAP; break; case HDMI_AUD_SWAP_RLS_RRS: swap_bit = RLS_RRS_SWAP; break; case HDMI_AUD_SWAP_LR_STATUS: swap_bit = LR_STATUS_SWAP; break; default: swap_bit = LFE_CC_SWAP; break; } mtk_hdmi_mask(hdmi, GRL_CH_SWAP, swap_bit, 0xff); } static void mtk_hdmi_hw_aud_set_bit_num(struct mtk_hdmi *hdmi, enum hdmi_audio_sample_size bit_num) { u32 val; switch (bit_num) { case HDMI_AUDIO_SAMPLE_SIZE_16: val = AOUT_16BIT; break; case HDMI_AUDIO_SAMPLE_SIZE_20: val = AOUT_20BIT; break; case HDMI_AUDIO_SAMPLE_SIZE_24: case HDMI_AUDIO_SAMPLE_SIZE_STREAM: val = AOUT_24BIT; break; } mtk_hdmi_mask(hdmi, GRL_AOUT_CFG, val, AOUT_BNUM_SEL_MASK); } static void mtk_hdmi_hw_aud_set_i2s_fmt(struct mtk_hdmi *hdmi, enum hdmi_aud_i2s_fmt i2s_fmt) { u32 val; val = mtk_hdmi_read(hdmi, GRL_CFG0); val &= ~(CFG0_W_LENGTH_MASK | CFG0_I2S_MODE_MASK); switch (i2s_fmt) { case HDMI_I2S_MODE_RJT_24BIT: val |= CFG0_I2S_MODE_RTJ | CFG0_W_LENGTH_24BIT; break; case HDMI_I2S_MODE_RJT_16BIT: val |= CFG0_I2S_MODE_RTJ | CFG0_W_LENGTH_16BIT; break; case HDMI_I2S_MODE_LJT_24BIT: default: val |= CFG0_I2S_MODE_LTJ | CFG0_W_LENGTH_24BIT; break; case HDMI_I2S_MODE_LJT_16BIT: val |= CFG0_I2S_MODE_LTJ | CFG0_W_LENGTH_16BIT; break; case HDMI_I2S_MODE_I2S_24BIT: val |= CFG0_I2S_MODE_I2S | CFG0_W_LENGTH_24BIT; break; case HDMI_I2S_MODE_I2S_16BIT: val |= CFG0_I2S_MODE_I2S | CFG0_W_LENGTH_16BIT; break; } mtk_hdmi_write(hdmi, GRL_CFG0, val); } static void mtk_hdmi_hw_audio_config(struct mtk_hdmi *hdmi, bool dst) { const u8 mask = HIGH_BIT_RATE | DST_NORMAL_DOUBLE | SACD_DST | DSD_SEL; u8 val; /* Disable high bitrate, set DST packet normal/double */ mtk_hdmi_clear_bits(hdmi, GRL_AOUT_CFG, HIGH_BIT_RATE_PACKET_ALIGN); if (dst) val = DST_NORMAL_DOUBLE | SACD_DST; else val = 0; mtk_hdmi_mask(hdmi, GRL_AUDIO_CFG, val, mask); } static void mtk_hdmi_hw_aud_set_i2s_chan_num(struct mtk_hdmi *hdmi, enum hdmi_aud_channel_type channel_type, u8 channel_count) { unsigned int ch_switch; u8 i2s_uv; ch_switch = CH_SWITCH(7, 7) | CH_SWITCH(6, 6) | CH_SWITCH(5, 5) | CH_SWITCH(4, 4) | CH_SWITCH(3, 3) | CH_SWITCH(1, 2) | CH_SWITCH(2, 1) | CH_SWITCH(0, 0); if (channel_count == 2) { i2s_uv = I2S_UV_CH_EN(0); } else if (channel_count == 3 || channel_count == 4) { if (channel_count == 4 && (channel_type == HDMI_AUD_CHAN_TYPE_3_0_LRS || channel_type == HDMI_AUD_CHAN_TYPE_4_0)) i2s_uv = I2S_UV_CH_EN(2) | I2S_UV_CH_EN(0); else i2s_uv = I2S_UV_CH_EN(3) | I2S_UV_CH_EN(2); } else if (channel_count == 6 || channel_count == 5) { if (channel_count == 6 && channel_type != HDMI_AUD_CHAN_TYPE_5_1 && channel_type != HDMI_AUD_CHAN_TYPE_4_1_CLRS) { i2s_uv = I2S_UV_CH_EN(3) | I2S_UV_CH_EN(2) | I2S_UV_CH_EN(1) | I2S_UV_CH_EN(0); } else { i2s_uv = I2S_UV_CH_EN(2) | I2S_UV_CH_EN(1) | I2S_UV_CH_EN(0); } } else if (channel_count == 8 || channel_count == 7) { i2s_uv = I2S_UV_CH_EN(3) | I2S_UV_CH_EN(2) | I2S_UV_CH_EN(1) | I2S_UV_CH_EN(0); } else { i2s_uv = I2S_UV_CH_EN(0); } mtk_hdmi_write(hdmi, GRL_CH_SW0, ch_switch & 0xff); mtk_hdmi_write(hdmi, GRL_CH_SW1, (ch_switch >> 8) & 0xff); mtk_hdmi_write(hdmi, GRL_CH_SW2, (ch_switch >> 16) & 0xff); mtk_hdmi_write(hdmi, GRL_I2S_UV, i2s_uv); } static void mtk_hdmi_hw_aud_set_input_type(struct mtk_hdmi *hdmi, enum hdmi_aud_input_type input_type) { u32 val; val = mtk_hdmi_read(hdmi, GRL_CFG1); if (input_type == HDMI_AUD_INPUT_I2S && (val & CFG1_SPDIF) == CFG1_SPDIF) { val &= ~CFG1_SPDIF; } else if (input_type == HDMI_AUD_INPUT_SPDIF && (val & CFG1_SPDIF) == 0) { val |= CFG1_SPDIF; } mtk_hdmi_write(hdmi, GRL_CFG1, val); } static void mtk_hdmi_hw_aud_set_channel_status(struct mtk_hdmi *hdmi, u8 *channel_status) { int i; for (i = 0; i < 5; i++) { mtk_hdmi_write(hdmi, GRL_I2S_C_STA0 + i * 4, channel_status[i]); mtk_hdmi_write(hdmi, GRL_L_STATUS_0 + i * 4, channel_status[i]); mtk_hdmi_write(hdmi, GRL_R_STATUS_0 + i * 4, channel_status[i]); } for (; i < 24; i++) { mtk_hdmi_write(hdmi, GRL_L_STATUS_0 + i * 4, 0); mtk_hdmi_write(hdmi, GRL_R_STATUS_0 + i * 4, 0); } } static void mtk_hdmi_hw_aud_src_reenable(struct mtk_hdmi *hdmi) { u32 val; val = mtk_hdmi_read(hdmi, GRL_MIX_CTRL); if (val & MIX_CTRL_SRC_EN) { val &= ~MIX_CTRL_SRC_EN; mtk_hdmi_write(hdmi, GRL_MIX_CTRL, val); usleep_range(255, 512); val |= MIX_CTRL_SRC_EN; mtk_hdmi_write(hdmi, GRL_MIX_CTRL, val); } } static void mtk_hdmi_hw_aud_src_disable(struct mtk_hdmi *hdmi) { u32 val; val = mtk_hdmi_read(hdmi, GRL_MIX_CTRL); val &= ~MIX_CTRL_SRC_EN; mtk_hdmi_write(hdmi, GRL_MIX_CTRL, val); mtk_hdmi_write(hdmi, GRL_SHIFT_L1, 0x00); } static void mtk_hdmi_hw_aud_set_mclk(struct mtk_hdmi *hdmi, enum hdmi_aud_mclk mclk) { u32 val; val = mtk_hdmi_read(hdmi, GRL_CFG5); val &= CFG5_CD_RATIO_MASK; switch (mclk) { case HDMI_AUD_MCLK_128FS: val |= CFG5_FS128; break; case HDMI_AUD_MCLK_256FS: val |= CFG5_FS256; break; case HDMI_AUD_MCLK_384FS: val |= CFG5_FS384; break; case HDMI_AUD_MCLK_512FS: val |= CFG5_FS512; break; case HDMI_AUD_MCLK_768FS: val |= CFG5_FS768; break; default: val |= CFG5_FS256; break; } mtk_hdmi_write(hdmi, GRL_CFG5, val); } struct hdmi_acr_n { unsigned int clock; unsigned int n[3]; }; /* Recommended N values from HDMI specification, tables 7-1 to 7-3 */ static const struct hdmi_acr_n hdmi_rec_n_table[] = { /* Clock, N: 32kHz 44.1kHz 48kHz */ { 25175, { 4576, 7007, 6864 } }, { 74176, { 11648, 17836, 11648 } }, { 148352, { 11648, 8918, 5824 } }, { 296703, { 5824, 4459, 5824 } }, { 297000, { 3072, 4704, 5120 } }, { 0, { 4096, 6272, 6144 } }, /* all other TMDS clocks */ }; /** * hdmi_recommended_n() - Return N value recommended by HDMI specification * @freq: audio sample rate in Hz * @clock: rounded TMDS clock in kHz */ static unsigned int hdmi_recommended_n(unsigned int freq, unsigned int clock) { const struct hdmi_acr_n *recommended; unsigned int i; for (i = 0; i < ARRAY_SIZE(hdmi_rec_n_table) - 1; i++) { if (clock == hdmi_rec_n_table[i].clock) break; } recommended = hdmi_rec_n_table + i; switch (freq) { case 32000: return recommended->n[0]; case 44100: return recommended->n[1]; case 48000: return recommended->n[2]; case 88200: return recommended->n[1] * 2; case 96000: return recommended->n[2] * 2; case 176400: return recommended->n[1] * 4; case 192000: return recommended->n[2] * 4; default: return (128 * freq) / 1000; } } static unsigned int hdmi_mode_clock_to_hz(unsigned int clock) { switch (clock) { case 25175: return 25174825; /* 25.2/1.001 MHz */ case 74176: return 74175824; /* 74.25/1.001 MHz */ case 148352: return 148351648; /* 148.5/1.001 MHz */ case 296703: return 296703297; /* 297/1.001 MHz */ default: return clock * 1000; } } static unsigned int hdmi_expected_cts(unsigned int audio_sample_rate, unsigned int tmds_clock, unsigned int n) { return DIV_ROUND_CLOSEST_ULL((u64)hdmi_mode_clock_to_hz(tmds_clock) * n, 128 * audio_sample_rate); } static void do_hdmi_hw_aud_set_ncts(struct mtk_hdmi *hdmi, unsigned int n, unsigned int cts) { unsigned char val[NCTS_BYTES]; int i; mtk_hdmi_write(hdmi, GRL_NCTS, 0); mtk_hdmi_write(hdmi, GRL_NCTS, 0); mtk_hdmi_write(hdmi, GRL_NCTS, 0); memset(val, 0, sizeof(val)); val[0] = (cts >> 24) & 0xff; val[1] = (cts >> 16) & 0xff; val[2] = (cts >> 8) & 0xff; val[3] = cts & 0xff; val[4] = (n >> 16) & 0xff; val[5] = (n >> 8) & 0xff; val[6] = n & 0xff; for (i = 0; i < NCTS_BYTES; i++) mtk_hdmi_write(hdmi, GRL_NCTS, val[i]); } static void mtk_hdmi_hw_aud_set_ncts(struct mtk_hdmi *hdmi, unsigned int sample_rate, unsigned int clock) { unsigned int n, cts; n = hdmi_recommended_n(sample_rate, clock); cts = hdmi_expected_cts(sample_rate, clock, n); dev_dbg(hdmi->dev, "%s: sample_rate=%u, clock=%d, cts=%u, n=%u\n", __func__, sample_rate, clock, n, cts); mtk_hdmi_mask(hdmi, DUMMY_304, AUDIO_I2S_NCTS_SEL_64, AUDIO_I2S_NCTS_SEL); do_hdmi_hw_aud_set_ncts(hdmi, n, cts); } static u8 mtk_hdmi_aud_get_chnl_count(enum hdmi_aud_channel_type channel_type) { switch (channel_type) { case HDMI_AUD_CHAN_TYPE_1_0: case HDMI_AUD_CHAN_TYPE_1_1: case HDMI_AUD_CHAN_TYPE_2_0: return 2; case HDMI_AUD_CHAN_TYPE_2_1: case HDMI_AUD_CHAN_TYPE_3_0: return 3; case HDMI_AUD_CHAN_TYPE_3_1: case HDMI_AUD_CHAN_TYPE_4_0: case HDMI_AUD_CHAN_TYPE_3_0_LRS: return 4; case HDMI_AUD_CHAN_TYPE_4_1: case HDMI_AUD_CHAN_TYPE_5_0: case HDMI_AUD_CHAN_TYPE_3_1_LRS: case HDMI_AUD_CHAN_TYPE_4_0_CLRS: return 5; case HDMI_AUD_CHAN_TYPE_5_1: case HDMI_AUD_CHAN_TYPE_6_0: case HDMI_AUD_CHAN_TYPE_4_1_CLRS: case HDMI_AUD_CHAN_TYPE_6_0_CS: case HDMI_AUD_CHAN_TYPE_6_0_CH: case HDMI_AUD_CHAN_TYPE_6_0_OH: case HDMI_AUD_CHAN_TYPE_6_0_CHR: return 6; case HDMI_AUD_CHAN_TYPE_6_1: case HDMI_AUD_CHAN_TYPE_6_1_CS: case HDMI_AUD_CHAN_TYPE_6_1_CH: case HDMI_AUD_CHAN_TYPE_6_1_OH: case HDMI_AUD_CHAN_TYPE_6_1_CHR: case HDMI_AUD_CHAN_TYPE_7_0: case HDMI_AUD_CHAN_TYPE_7_0_LH_RH: case HDMI_AUD_CHAN_TYPE_7_0_LSR_RSR: case HDMI_AUD_CHAN_TYPE_7_0_LC_RC: case HDMI_AUD_CHAN_TYPE_7_0_LW_RW: case HDMI_AUD_CHAN_TYPE_7_0_LSD_RSD: case HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS: case HDMI_AUD_CHAN_TYPE_7_0_LHS_RHS: case HDMI_AUD_CHAN_TYPE_7_0_CS_CH: case HDMI_AUD_CHAN_TYPE_7_0_CS_OH: case HDMI_AUD_CHAN_TYPE_7_0_CS_CHR: case HDMI_AUD_CHAN_TYPE_7_0_CH_OH: case HDMI_AUD_CHAN_TYPE_7_0_CH_CHR: case HDMI_AUD_CHAN_TYPE_7_0_OH_CHR: case HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS_LSR_RSR: case HDMI_AUD_CHAN_TYPE_8_0_LH_RH_CS: return 7; case HDMI_AUD_CHAN_TYPE_7_1: case HDMI_AUD_CHAN_TYPE_7_1_LH_RH: case HDMI_AUD_CHAN_TYPE_7_1_LSR_RSR: case HDMI_AUD_CHAN_TYPE_7_1_LC_RC: case HDMI_AUD_CHAN_TYPE_7_1_LW_RW: case HDMI_AUD_CHAN_TYPE_7_1_LSD_RSD: case HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS: case HDMI_AUD_CHAN_TYPE_7_1_LHS_RHS: case HDMI_AUD_CHAN_TYPE_7_1_CS_CH: case HDMI_AUD_CHAN_TYPE_7_1_CS_OH: case HDMI_AUD_CHAN_TYPE_7_1_CS_CHR: case HDMI_AUD_CHAN_TYPE_7_1_CH_OH: case HDMI_AUD_CHAN_TYPE_7_1_CH_CHR: case HDMI_AUD_CHAN_TYPE_7_1_OH_CHR: case HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS_LSR_RSR: return 8; default: return 2; } } static int mtk_hdmi_video_change_vpll(struct mtk_hdmi *hdmi, u32 clock) { unsigned long rate; int ret; /* The DPI driver already should have set TVDPLL to the correct rate */ ret = clk_set_rate(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL], clock); if (ret) { dev_err(hdmi->dev, "Failed to set PLL to %u Hz: %d\n", clock, ret); return ret; } rate = clk_get_rate(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]); if (DIV_ROUND_CLOSEST(rate, 1000) != DIV_ROUND_CLOSEST(clock, 1000)) dev_warn(hdmi->dev, "Want PLL %u Hz, got %lu Hz\n", clock, rate); else dev_dbg(hdmi->dev, "Want PLL %u Hz, got %lu Hz\n", clock, rate); mtk_hdmi_hw_config_sys(hdmi); mtk_hdmi_hw_set_deep_color_mode(hdmi); return 0; } static void mtk_hdmi_video_set_display_mode(struct mtk_hdmi *hdmi, struct drm_display_mode *mode) { mtk_hdmi_hw_reset(hdmi); mtk_hdmi_hw_enable_notice(hdmi, true); mtk_hdmi_hw_write_int_mask(hdmi, 0xff); mtk_hdmi_hw_enable_dvi_mode(hdmi, hdmi->dvi_mode); mtk_hdmi_hw_ncts_auto_write_enable(hdmi, true); mtk_hdmi_hw_msic_setting(hdmi, mode); } static int mtk_hdmi_aud_enable_packet(struct mtk_hdmi *hdmi, bool enable) { mtk_hdmi_hw_send_aud_packet(hdmi, enable); return 0; } static int mtk_hdmi_aud_on_off_hw_ncts(struct mtk_hdmi *hdmi, bool on) { mtk_hdmi_hw_ncts_enable(hdmi, on); return 0; } static int mtk_hdmi_aud_set_input(struct mtk_hdmi *hdmi) { enum hdmi_aud_channel_type chan_type; u8 chan_count; bool dst; mtk_hdmi_hw_aud_set_channel_swap(hdmi, HDMI_AUD_SWAP_LFE_CC); mtk_hdmi_set_bits(hdmi, GRL_MIX_CTRL, MIX_CTRL_FLAT); if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_SPDIF && hdmi->aud_param.aud_codec == HDMI_AUDIO_CODING_TYPE_DST) { mtk_hdmi_hw_aud_set_bit_num(hdmi, HDMI_AUDIO_SAMPLE_SIZE_24); } else if (hdmi->aud_param.aud_i2s_fmt == HDMI_I2S_MODE_LJT_24BIT) { hdmi->aud_param.aud_i2s_fmt = HDMI_I2S_MODE_LJT_16BIT; } mtk_hdmi_hw_aud_set_i2s_fmt(hdmi, hdmi->aud_param.aud_i2s_fmt); mtk_hdmi_hw_aud_set_bit_num(hdmi, HDMI_AUDIO_SAMPLE_SIZE_24); dst = ((hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_SPDIF) && (hdmi->aud_param.aud_codec == HDMI_AUDIO_CODING_TYPE_DST)); mtk_hdmi_hw_audio_config(hdmi, dst); if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_SPDIF) chan_type = HDMI_AUD_CHAN_TYPE_2_0; else chan_type = hdmi->aud_param.aud_input_chan_type; chan_count = mtk_hdmi_aud_get_chnl_count(chan_type); mtk_hdmi_hw_aud_set_i2s_chan_num(hdmi, chan_type, chan_count); mtk_hdmi_hw_aud_set_input_type(hdmi, hdmi->aud_param.aud_input_type); return 0; } static int mtk_hdmi_aud_set_src(struct mtk_hdmi *hdmi, struct drm_display_mode *display_mode) { unsigned int sample_rate = hdmi->aud_param.codec_params.sample_rate; mtk_hdmi_aud_on_off_hw_ncts(hdmi, false); mtk_hdmi_hw_aud_src_disable(hdmi); mtk_hdmi_clear_bits(hdmi, GRL_CFG2, CFG2_ACLK_INV); if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_I2S) { switch (sample_rate) { case 32000: case 44100: case 48000: case 88200: case 96000: break; default: return -EINVAL; } mtk_hdmi_hw_aud_set_mclk(hdmi, hdmi->aud_param.aud_mclk); } else { switch (sample_rate) { case 32000: case 44100: case 48000: break; default: return -EINVAL; } mtk_hdmi_hw_aud_set_mclk(hdmi, HDMI_AUD_MCLK_128FS); } mtk_hdmi_hw_aud_set_ncts(hdmi, sample_rate, display_mode->clock); mtk_hdmi_hw_aud_src_reenable(hdmi); return 0; } static int mtk_hdmi_aud_output_config(struct mtk_hdmi *hdmi, struct drm_display_mode *display_mode) { mtk_hdmi_hw_aud_mute(hdmi); mtk_hdmi_aud_enable_packet(hdmi, false); mtk_hdmi_aud_set_input(hdmi); mtk_hdmi_aud_set_src(hdmi, display_mode); mtk_hdmi_hw_aud_set_channel_status(hdmi, hdmi->aud_param.codec_params.iec.status); usleep_range(50, 100); mtk_hdmi_aud_on_off_hw_ncts(hdmi, true); mtk_hdmi_aud_enable_packet(hdmi, true); mtk_hdmi_hw_aud_unmute(hdmi); return 0; } static int mtk_hdmi_setup_avi_infoframe(struct mtk_hdmi *hdmi, struct drm_display_mode *mode) { struct hdmi_avi_infoframe frame; u8 buffer[17]; ssize_t err; err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false); if (err < 0) { dev_err(hdmi->dev, "Failed to get AVI infoframe from mode: %zd\n", err); return err; } 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 err; } mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer)); return 0; } static int mtk_hdmi_setup_spd_infoframe(struct mtk_hdmi *hdmi, const char *vendor, const char *product) { struct hdmi_spd_infoframe frame; u8 buffer[29]; ssize_t err; err = hdmi_spd_infoframe_init(&frame, vendor, product); if (err < 0) { dev_err(hdmi->dev, "Failed to initialize SPD infoframe: %zd\n", err); return err; } err = hdmi_spd_infoframe_pack(&frame, buffer, sizeof(buffer)); if (err < 0) { dev_err(hdmi->dev, "Failed to pack SDP infoframe: %zd\n", err); return err; } mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer)); return 0; } static int mtk_hdmi_setup_audio_infoframe(struct mtk_hdmi *hdmi) { struct hdmi_audio_infoframe frame; u8 buffer[14]; ssize_t err; err = hdmi_audio_infoframe_init(&frame); if (err < 0) { dev_err(hdmi->dev, "Failed to setup audio infoframe: %zd\n", err); return err; } frame.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM; frame.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM; frame.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM; frame.channels = mtk_hdmi_aud_get_chnl_count( hdmi->aud_param.aud_input_chan_type); 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 err; } mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer)); return 0; } static int mtk_hdmi_setup_vendor_specific_infoframe(struct mtk_hdmi *hdmi, struct drm_display_mode *mode) { struct hdmi_vendor_infoframe frame; u8 buffer[10]; ssize_t err; err = drm_hdmi_vendor_infoframe_from_display_mode(&frame, &hdmi->conn, mode); if (err) { dev_err(hdmi->dev, "Failed to get vendor infoframe from mode: %zd\n", err); return err; } 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 err; } mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer)); return 0; } static int mtk_hdmi_output_init(struct mtk_hdmi *hdmi) { struct hdmi_audio_param *aud_param = &hdmi->aud_param; hdmi->csp = HDMI_COLORSPACE_RGB; aud_param->aud_codec = HDMI_AUDIO_CODING_TYPE_PCM; aud_param->aud_sampe_size = HDMI_AUDIO_SAMPLE_SIZE_16; aud_param->aud_input_type = HDMI_AUD_INPUT_I2S; aud_param->aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT; aud_param->aud_mclk = HDMI_AUD_MCLK_128FS; aud_param->aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0; return 0; } static void mtk_hdmi_audio_enable(struct mtk_hdmi *hdmi) { mtk_hdmi_aud_enable_packet(hdmi, true); hdmi->audio_enable = true; } static void mtk_hdmi_audio_disable(struct mtk_hdmi *hdmi) { mtk_hdmi_aud_enable_packet(hdmi, false); hdmi->audio_enable = false; } static int mtk_hdmi_audio_set_param(struct mtk_hdmi *hdmi, struct hdmi_audio_param *param) { if (!hdmi->audio_enable) { dev_err(hdmi->dev, "hdmi audio is in disable state!\n"); return -EINVAL; } dev_dbg(hdmi->dev, "codec:%d, input:%d, channel:%d, fs:%d\n", param->aud_codec, param->aud_input_type, param->aud_input_chan_type, param->codec_params.sample_rate); memcpy(&hdmi->aud_param, param, sizeof(*param)); return mtk_hdmi_aud_output_config(hdmi, &hdmi->mode); } static int mtk_hdmi_output_set_display_mode(struct mtk_hdmi *hdmi, struct drm_display_mode *mode) { int ret; mtk_hdmi_hw_vid_black(hdmi, true); mtk_hdmi_hw_aud_mute(hdmi); mtk_hdmi_hw_send_av_mute(hdmi); phy_power_off(hdmi->phy); ret = mtk_hdmi_video_change_vpll(hdmi, mode->clock * 1000); if (ret) { dev_err(hdmi->dev, "Failed to set vpll: %d\n", ret); return ret; } mtk_hdmi_video_set_display_mode(hdmi, mode); phy_power_on(hdmi->phy); mtk_hdmi_aud_output_config(hdmi, mode); mtk_hdmi_hw_vid_black(hdmi, false); mtk_hdmi_hw_aud_unmute(hdmi); mtk_hdmi_hw_send_av_unmute(hdmi); return 0; } static const char * const mtk_hdmi_clk_names[MTK_HDMI_CLK_COUNT] = { [MTK_HDMI_CLK_HDMI_PIXEL] = "pixel", [MTK_HDMI_CLK_HDMI_PLL] = "pll", [MTK_HDMI_CLK_AUD_BCLK] = "bclk", [MTK_HDMI_CLK_AUD_SPDIF] = "spdif", }; static int mtk_hdmi_get_all_clk(struct mtk_hdmi *hdmi, struct device_node *np) { int i; for (i = 0; i < ARRAY_SIZE(mtk_hdmi_clk_names); i++) { hdmi->clk[i] = of_clk_get_by_name(np, mtk_hdmi_clk_names[i]); if (IS_ERR(hdmi->clk[i])) return PTR_ERR(hdmi->clk[i]); } return 0; } static int mtk_hdmi_clk_enable_audio(struct mtk_hdmi *hdmi) { int ret; ret = clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]); if (ret) return ret; ret = clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_AUD_SPDIF]); if (ret) goto err; return 0; err: clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]); return ret; } static void mtk_hdmi_clk_disable_audio(struct mtk_hdmi *hdmi) { clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]); clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_SPDIF]); } static enum drm_connector_status hdmi_conn_detect(struct drm_connector *conn, bool force) { struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn); return mtk_cec_hpd_high(hdmi->cec_dev) ? connector_status_connected : connector_status_disconnected; } static void hdmi_conn_destroy(struct drm_connector *conn) { struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn); mtk_cec_set_hpd_event(hdmi->cec_dev, NULL, NULL); drm_connector_cleanup(conn); } static int mtk_hdmi_conn_get_modes(struct drm_connector *conn) { struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn); struct edid *edid; int ret; if (!hdmi->ddc_adpt) return -ENODEV; edid = drm_get_edid(conn, hdmi->ddc_adpt); if (!edid) return -ENODEV; hdmi->dvi_mode = !drm_detect_monitor_audio(edid); drm_connector_update_edid_property(conn, edid); ret = drm_add_edid_modes(conn, edid); kfree(edid); return ret; } static int mtk_hdmi_conn_mode_valid(struct drm_connector *conn, struct drm_display_mode *mode) { struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn); dev_dbg(hdmi->dev, "xres=%d, yres=%d, refresh=%d, intl=%d clock=%d\n", mode->hdisplay, mode->vdisplay, mode->vrefresh, !!(mode->flags & DRM_MODE_FLAG_INTERLACE), mode->clock * 1000); if (hdmi->bridge.next) { struct drm_display_mode adjusted_mode; drm_mode_copy(&adjusted_mode, mode); if (!drm_bridge_mode_fixup(hdmi->bridge.next, mode, &adjusted_mode)) return MODE_BAD; } if (mode->clock < 27000) return MODE_CLOCK_LOW; if (mode->clock > 297000) return MODE_CLOCK_HIGH; return drm_mode_validate_size(mode, 0x1fff, 0x1fff); } static struct drm_encoder *mtk_hdmi_conn_best_enc(struct drm_connector *conn) { struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn); return hdmi->bridge.encoder; } static const struct drm_connector_funcs mtk_hdmi_connector_funcs = { .detect = hdmi_conn_detect, .fill_modes = drm_helper_probe_single_connector_modes, .destroy = hdmi_conn_destroy, .reset = drm_atomic_helper_connector_reset, .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, }; static const struct drm_connector_helper_funcs mtk_hdmi_connector_helper_funcs = { .get_modes = mtk_hdmi_conn_get_modes, .mode_valid = mtk_hdmi_conn_mode_valid, .best_encoder = mtk_hdmi_conn_best_enc, }; static void mtk_hdmi_hpd_event(bool hpd, struct device *dev) { struct mtk_hdmi *hdmi = dev_get_drvdata(dev); if (hdmi && hdmi->bridge.encoder && hdmi->bridge.encoder->dev) drm_helper_hpd_irq_event(hdmi->bridge.encoder->dev); } /* * Bridge callbacks */ static int mtk_hdmi_bridge_attach(struct drm_bridge *bridge) { struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); int ret; ret = drm_connector_init(bridge->encoder->dev, &hdmi->conn, &mtk_hdmi_connector_funcs, DRM_MODE_CONNECTOR_HDMIA); if (ret) { dev_err(hdmi->dev, "Failed to initialize connector: %d\n", ret); return ret; } drm_connector_helper_add(&hdmi->conn, &mtk_hdmi_connector_helper_funcs); hdmi->conn.polled = DRM_CONNECTOR_POLL_HPD; hdmi->conn.interlace_allowed = true; hdmi->conn.doublescan_allowed = false; ret = drm_connector_attach_encoder(&hdmi->conn, bridge->encoder); if (ret) { dev_err(hdmi->dev, "Failed to attach connector to encoder: %d\n", ret); return ret; } if (hdmi->next_bridge) { ret = drm_bridge_attach(bridge->encoder, hdmi->next_bridge, bridge); if (ret) { dev_err(hdmi->dev, "Failed to attach external bridge: %d\n", ret); return ret; } } mtk_cec_set_hpd_event(hdmi->cec_dev, mtk_hdmi_hpd_event, hdmi->dev); return 0; } static bool mtk_hdmi_bridge_mode_fixup(struct drm_bridge *bridge, const struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode) { return true; } static void mtk_hdmi_bridge_disable(struct drm_bridge *bridge) { struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); if (!hdmi->enabled) return; phy_power_off(hdmi->phy); clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_HDMI_PIXEL]); clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]); hdmi->enabled = false; } static void mtk_hdmi_bridge_post_disable(struct drm_bridge *bridge) { struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); if (!hdmi->powered) return; mtk_hdmi_hw_1p4_version_enable(hdmi, true); mtk_hdmi_hw_make_reg_writable(hdmi, false); hdmi->powered = false; } static void mtk_hdmi_bridge_mode_set(struct drm_bridge *bridge, struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode) { struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); dev_dbg(hdmi->dev, "cur info: name:%s, hdisplay:%d\n", adjusted_mode->name, adjusted_mode->hdisplay); dev_dbg(hdmi->dev, "hsync_start:%d,hsync_end:%d, htotal:%d", adjusted_mode->hsync_start, adjusted_mode->hsync_end, adjusted_mode->htotal); dev_dbg(hdmi->dev, "hskew:%d, vdisplay:%d\n", adjusted_mode->hskew, adjusted_mode->vdisplay); dev_dbg(hdmi->dev, "vsync_start:%d, vsync_end:%d, vtotal:%d", adjusted_mode->vsync_start, adjusted_mode->vsync_end, adjusted_mode->vtotal); dev_dbg(hdmi->dev, "vscan:%d, flag:%d\n", adjusted_mode->vscan, adjusted_mode->flags); drm_mode_copy(&hdmi->mode, adjusted_mode); } static void mtk_hdmi_bridge_pre_enable(struct drm_bridge *bridge) { struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); mtk_hdmi_hw_make_reg_writable(hdmi, true); mtk_hdmi_hw_1p4_version_enable(hdmi, true); hdmi->powered = true; } static void mtk_hdmi_send_infoframe(struct mtk_hdmi *hdmi, struct drm_display_mode *mode) { mtk_hdmi_setup_audio_infoframe(hdmi); mtk_hdmi_setup_avi_infoframe(hdmi, mode); mtk_hdmi_setup_spd_infoframe(hdmi, "mediatek", "On-chip HDMI"); if (mode->flags & DRM_MODE_FLAG_3D_MASK) mtk_hdmi_setup_vendor_specific_infoframe(hdmi, mode); } static void mtk_hdmi_bridge_enable(struct drm_bridge *bridge) { struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); mtk_hdmi_output_set_display_mode(hdmi, &hdmi->mode); clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]); clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_HDMI_PIXEL]); phy_power_on(hdmi->phy); mtk_hdmi_send_infoframe(hdmi, &hdmi->mode); hdmi->enabled = true; } static const struct drm_bridge_funcs mtk_hdmi_bridge_funcs = { .attach = mtk_hdmi_bridge_attach, .mode_fixup = mtk_hdmi_bridge_mode_fixup, .disable = mtk_hdmi_bridge_disable, .post_disable = mtk_hdmi_bridge_post_disable, .mode_set = mtk_hdmi_bridge_mode_set, .pre_enable = mtk_hdmi_bridge_pre_enable, .enable = mtk_hdmi_bridge_enable, }; static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi, struct platform_device *pdev) { struct device *dev = &pdev->dev; struct device_node *np = dev->of_node; struct device_node *cec_np, *remote, *i2c_np; struct platform_device *cec_pdev; struct regmap *regmap; struct resource *mem; int ret; ret = mtk_hdmi_get_all_clk(hdmi, np); if (ret) { dev_err(dev, "Failed to get clocks: %d\n", ret); return ret; } /* The CEC module handles HDMI hotplug detection */ cec_np = of_get_compatible_child(np->parent, "mediatek,mt8173-cec"); if (!cec_np) { dev_err(dev, "Failed to find CEC node\n"); return -EINVAL; } cec_pdev = of_find_device_by_node(cec_np); if (!cec_pdev) { dev_err(hdmi->dev, "Waiting for CEC device %pOF\n", cec_np); of_node_put(cec_np); return -EPROBE_DEFER; } of_node_put(cec_np); hdmi->cec_dev = &cec_pdev->dev; /* * The mediatek,syscon-hdmi property contains a phandle link to the * MMSYS_CONFIG device and the register offset of the HDMI_SYS_CFG * registers it contains. */ regmap = syscon_regmap_lookup_by_phandle(np, "mediatek,syscon-hdmi"); ret = of_property_read_u32_index(np, "mediatek,syscon-hdmi", 1, &hdmi->sys_offset); if (IS_ERR(regmap)) ret = PTR_ERR(regmap); if (ret) { ret = PTR_ERR(regmap); dev_err(dev, "Failed to get system configuration registers: %d\n", ret); return ret; } hdmi->sys_regmap = regmap; mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); hdmi->regs = devm_ioremap_resource(dev, mem); if (IS_ERR(hdmi->regs)) return PTR_ERR(hdmi->regs); remote = of_graph_get_remote_node(np, 1, 0); if (!remote) return -EINVAL; if (!of_device_is_compatible(remote, "hdmi-connector")) { hdmi->next_bridge = of_drm_find_bridge(remote); if (!hdmi->next_bridge) { dev_err(dev, "Waiting for external bridge\n"); of_node_put(remote); return -EPROBE_DEFER; } } i2c_np = of_parse_phandle(remote, "ddc-i2c-bus", 0); if (!i2c_np) { dev_err(dev, "Failed to find ddc-i2c-bus node in %pOF\n", remote); of_node_put(remote); return -EINVAL; } of_node_put(remote); hdmi->ddc_adpt = of_find_i2c_adapter_by_node(i2c_np); if (!hdmi->ddc_adpt) { dev_err(dev, "Failed to get ddc i2c adapter by node\n"); return -EINVAL; } return 0; } /* * HDMI audio codec callbacks */ static int mtk_hdmi_audio_hw_params(struct device *dev, void *data, struct hdmi_codec_daifmt *daifmt, struct hdmi_codec_params *params) { struct mtk_hdmi *hdmi = dev_get_drvdata(dev); struct hdmi_audio_param hdmi_params; unsigned int chan = params->cea.channels; dev_dbg(hdmi->dev, "%s: %u Hz, %d bit, %d channels\n", __func__, params->sample_rate, params->sample_width, chan); if (!hdmi->bridge.encoder) return -ENODEV; switch (chan) { case 2: hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0; break; case 4: hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_4_0; break; case 6: hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_5_1; break; case 8: hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_7_1; break; default: dev_err(hdmi->dev, "channel[%d] not supported!\n", chan); return -EINVAL; } switch (params->sample_rate) { case 32000: case 44100: case 48000: case 88200: case 96000: case 176400: case 192000: break; default: dev_err(hdmi->dev, "rate[%d] not supported!\n", params->sample_rate); return -EINVAL; } switch (daifmt->fmt) { case HDMI_I2S: hdmi_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM; hdmi_params.aud_sampe_size = HDMI_AUDIO_SAMPLE_SIZE_16; hdmi_params.aud_input_type = HDMI_AUD_INPUT_I2S; hdmi_params.aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT; hdmi_params.aud_mclk = HDMI_AUD_MCLK_128FS; break; case HDMI_SPDIF: hdmi_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM; hdmi_params.aud_sampe_size = HDMI_AUDIO_SAMPLE_SIZE_16; hdmi_params.aud_input_type = HDMI_AUD_INPUT_SPDIF; break; default: dev_err(hdmi->dev, "%s: Invalid DAI format %d\n", __func__, daifmt->fmt); return -EINVAL; } memcpy(&hdmi_params.codec_params, params, sizeof(hdmi_params.codec_params)); mtk_hdmi_audio_set_param(hdmi, &hdmi_params); return 0; } static int mtk_hdmi_audio_startup(struct device *dev, void *data) { struct mtk_hdmi *hdmi = dev_get_drvdata(dev); dev_dbg(dev, "%s\n", __func__); mtk_hdmi_audio_enable(hdmi); return 0; } static void mtk_hdmi_audio_shutdown(struct device *dev, void *data) { struct mtk_hdmi *hdmi = dev_get_drvdata(dev); dev_dbg(dev, "%s\n", __func__); mtk_hdmi_audio_disable(hdmi); } static int mtk_hdmi_audio_digital_mute(struct device *dev, void *data, bool enable) { struct mtk_hdmi *hdmi = dev_get_drvdata(dev); dev_dbg(dev, "%s(%d)\n", __func__, enable); if (enable) mtk_hdmi_hw_aud_mute(hdmi); else mtk_hdmi_hw_aud_unmute(hdmi); return 0; } static int mtk_hdmi_audio_get_eld(struct device *dev, void *data, uint8_t *buf, size_t len) { struct mtk_hdmi *hdmi = dev_get_drvdata(dev); dev_dbg(dev, "%s\n", __func__); memcpy(buf, hdmi->conn.eld, min(sizeof(hdmi->conn.eld), len)); return 0; } static const struct hdmi_codec_ops mtk_hdmi_audio_codec_ops = { .hw_params = mtk_hdmi_audio_hw_params, .audio_startup = mtk_hdmi_audio_startup, .audio_shutdown = mtk_hdmi_audio_shutdown, .digital_mute = mtk_hdmi_audio_digital_mute, .get_eld = mtk_hdmi_audio_get_eld, }; static void mtk_hdmi_register_audio_driver(struct device *dev) { struct hdmi_codec_pdata codec_data = { .ops = &mtk_hdmi_audio_codec_ops, .max_i2s_channels = 2, .i2s = 1, }; struct platform_device *pdev; pdev = platform_device_register_data(dev, HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_AUTO, &codec_data, sizeof(codec_data)); if (IS_ERR(pdev)) return; DRM_INFO("%s driver bound to HDMI\n", HDMI_CODEC_DRV_NAME); } static int mtk_drm_hdmi_probe(struct platform_device *pdev) { struct mtk_hdmi *hdmi; struct device *dev = &pdev->dev; int ret; hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL); if (!hdmi) return -ENOMEM; hdmi->dev = dev; ret = mtk_hdmi_dt_parse_pdata(hdmi, pdev); if (ret) return ret; hdmi->phy = devm_phy_get(dev, "hdmi"); if (IS_ERR(hdmi->phy)) { ret = PTR_ERR(hdmi->phy); dev_err(dev, "Failed to get HDMI PHY: %d\n", ret); return ret; } platform_set_drvdata(pdev, hdmi); ret = mtk_hdmi_output_init(hdmi); if (ret) { dev_err(dev, "Failed to initialize hdmi output\n"); return ret; } mtk_hdmi_register_audio_driver(dev); hdmi->bridge.funcs = &mtk_hdmi_bridge_funcs; hdmi->bridge.of_node = pdev->dev.of_node; drm_bridge_add(&hdmi->bridge); ret = mtk_hdmi_clk_enable_audio(hdmi); if (ret) { dev_err(dev, "Failed to enable audio clocks: %d\n", ret); goto err_bridge_remove; } dev_dbg(dev, "mediatek hdmi probe success\n"); return 0; err_bridge_remove: drm_bridge_remove(&hdmi->bridge); return ret; } static int mtk_drm_hdmi_remove(struct platform_device *pdev) { struct mtk_hdmi *hdmi = platform_get_drvdata(pdev); drm_bridge_remove(&hdmi->bridge); mtk_hdmi_clk_disable_audio(hdmi); return 0; } #ifdef CONFIG_PM_SLEEP static int mtk_hdmi_suspend(struct device *dev) { struct mtk_hdmi *hdmi = dev_get_drvdata(dev); mtk_hdmi_clk_disable_audio(hdmi); dev_dbg(dev, "hdmi suspend success!\n"); return 0; } static int mtk_hdmi_resume(struct device *dev) { struct mtk_hdmi *hdmi = dev_get_drvdata(dev); int ret = 0; ret = mtk_hdmi_clk_enable_audio(hdmi); if (ret) { dev_err(dev, "hdmi resume failed!\n"); return ret; } dev_dbg(dev, "hdmi resume success!\n"); return 0; } #endif static SIMPLE_DEV_PM_OPS(mtk_hdmi_pm_ops, mtk_hdmi_suspend, mtk_hdmi_resume); static const struct of_device_id mtk_drm_hdmi_of_ids[] = { { .compatible = "mediatek,mt8173-hdmi", }, {} }; static struct platform_driver mtk_hdmi_driver = { .probe = mtk_drm_hdmi_probe, .remove = mtk_drm_hdmi_remove, .driver = { .name = "mediatek-drm-hdmi", .of_match_table = mtk_drm_hdmi_of_ids, .pm = &mtk_hdmi_pm_ops, }, }; static struct platform_driver * const mtk_hdmi_drivers[] = { &mtk_hdmi_phy_driver, &mtk_hdmi_ddc_driver, &mtk_cec_driver, &mtk_hdmi_driver, }; static int __init mtk_hdmitx_init(void) { return platform_register_drivers(mtk_hdmi_drivers, ARRAY_SIZE(mtk_hdmi_drivers)); } static void __exit mtk_hdmitx_exit(void) { platform_unregister_drivers(mtk_hdmi_drivers, ARRAY_SIZE(mtk_hdmi_drivers)); } module_init(mtk_hdmitx_init); module_exit(mtk_hdmitx_exit); MODULE_AUTHOR("Jie Qiu "); MODULE_DESCRIPTION("MediaTek HDMI Driver"); MODULE_LICENSE("GPL v2");