--- /dev/null
+/*
+ * Copyright (c) 2014 MediaTek Inc.
+ * Author: Jie Qiu <jie.qiu@mediatek.com>
+ *
+ * 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 <drm/drmP.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_edid.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/hdmi.h>
+#include <linux/i2c.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of_platform.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/of_graph.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <sound/hdmi-codec.h>
+#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_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)
+{
+ 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);
+ 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, 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) {
+ 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;
+}
+
+void mtk_hdmi_audio_enable(struct mtk_hdmi *hdmi)
+{
+ mtk_hdmi_aud_enable_packet(hdmi, true);
+ hdmi->audio_enable = true;
+}
+
+void mtk_hdmi_audio_disable(struct mtk_hdmi *hdmi)
+{
+ mtk_hdmi_aud_enable_packet(hdmi, false);
+ hdmi->audio_enable = false;
+}
+
+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_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);
+
+ 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_mode_connector_update_edid_property(conn, edid);
+
+ ret = drm_add_edid_modes(conn, edid);
+ drm_edid_to_eld(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 = {
+ .dpms = drm_atomic_helper_connector_dpms,
+ .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_mode_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 (bridge->next) {
+ bridge->next->encoder = bridge->encoder;
+ ret = drm_bridge_attach(bridge->encoder->dev, bridge->next);
+ 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_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);
+
+ 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, *port, *ep, *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_find_compatible_node(np->parent, NULL,
+ "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 %s\n",
+ cec_np->full_name);
+ return -EPROBE_DEFER;
+ }
+ 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);
+
+ port = of_graph_get_port_by_id(np, 1);
+ if (!port) {
+ dev_err(dev, "Missing output port node\n");
+ return -EINVAL;
+ }
+
+ ep = of_get_child_by_name(port, "endpoint");
+ if (!ep) {
+ dev_err(dev, "Missing endpoint node in port %s\n",
+ port->full_name);
+ of_node_put(port);
+ return -EINVAL;
+ }
+ of_node_put(port);
+
+ remote = of_graph_get_remote_port_parent(ep);
+ if (!remote) {
+ dev_err(dev, "Missing connector/bridge node for endpoint %s\n",
+ ep->full_name);
+ of_node_put(ep);
+ return -EINVAL;
+ }
+ of_node_put(ep);
+
+ if (!of_device_is_compatible(remote, "hdmi-connector")) {
+ hdmi->bridge.next = of_drm_find_bridge(remote);
+ if (!hdmi->bridge.next) {
+ 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 %s\n",
+ remote->full_name);
+ 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,
+ 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;
+ 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)
+{
+ 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)
+{
+ struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
+
+ dev_dbg(dev, "%s\n", __func__);
+
+ mtk_hdmi_audio_disable(hdmi);
+}
+
+int mtk_hdmi_audio_digital_mute(struct device *dev, 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, 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;
+ ret = drm_bridge_add(&hdmi->bridge);
+ if (ret) {
+ dev_err(dev, "failed to add bridge, ret = %d\n", ret);
+ return ret;
+ }
+
+ 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)
+{
+ int ret;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(mtk_hdmi_drivers); i++) {
+ ret = platform_driver_register(mtk_hdmi_drivers[i]);
+ if (ret < 0) {
+ pr_err("Failed to register %s driver: %d\n",
+ mtk_hdmi_drivers[i]->driver.name, ret);
+ goto err;
+ }
+ }
+
+ return 0;
+
+err:
+ while (--i >= 0)
+ platform_driver_unregister(mtk_hdmi_drivers[i]);
+
+ return ret;
+}
+
+static void __exit mtk_hdmitx_exit(void)
+{
+ int i;
+
+ for (i = ARRAY_SIZE(mtk_hdmi_drivers) - 1; i >= 0; i--)
+ platform_driver_unregister(mtk_hdmi_drivers[i]);
+}
+
+module_init(mtk_hdmitx_init);
+module_exit(mtk_hdmitx_exit);
+
+MODULE_AUTHOR("Jie Qiu <jie.qiu@mediatek.com>");
+MODULE_DESCRIPTION("MediaTek HDMI Driver");
+MODULE_LICENSE("GPL v2");
--- /dev/null
+/*
+ * Copyright (c) 2014 MediaTek Inc.
+ * Author: Jie Qiu <jie.qiu@mediatek.com>
+ *
+ * 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 <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/time.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+
+#define SIF1_CLOK (288)
+#define DDC_DDCMCTL0 (0x0)
+#define DDCM_ODRAIN BIT(31)
+#define DDCM_CLK_DIV_OFFSET (16)
+#define DDCM_CLK_DIV_MASK (0xfff << 16)
+#define DDCM_CS_STATUS BIT(4)
+#define DDCM_SCL_STATE BIT(3)
+#define DDCM_SDA_STATE BIT(2)
+#define DDCM_SM0EN BIT(1)
+#define DDCM_SCL_STRECH BIT(0)
+#define DDC_DDCMCTL1 (0x4)
+#define DDCM_ACK_OFFSET (16)
+#define DDCM_ACK_MASK (0xff << 16)
+#define DDCM_PGLEN_OFFSET (8)
+#define DDCM_PGLEN_MASK (0x7 << 8)
+#define DDCM_SIF_MODE_OFFSET (4)
+#define DDCM_SIF_MODE_MASK (0x7 << 4)
+#define DDCM_START (0x1)
+#define DDCM_WRITE_DATA (0x2)
+#define DDCM_STOP (0x3)
+#define DDCM_READ_DATA_NO_ACK (0x4)
+#define DDCM_READ_DATA_ACK (0x5)
+#define DDCM_TRI BIT(0)
+#define DDC_DDCMD0 (0x8)
+#define DDCM_DATA3 (0xff << 24)
+#define DDCM_DATA2 (0xff << 16)
+#define DDCM_DATA1 (0xff << 8)
+#define DDCM_DATA0 (0xff << 0)
+#define DDC_DDCMD1 (0xc)
+#define DDCM_DATA7 (0xff << 24)
+#define DDCM_DATA6 (0xff << 16)
+#define DDCM_DATA5 (0xff << 8)
+#define DDCM_DATA4 (0xff << 0)
+
+struct mtk_hdmi_ddc {
+ struct i2c_adapter adap;
+ struct clk *clk;
+ void __iomem *regs;
+};
+
+static inline void sif_set_bit(struct mtk_hdmi_ddc *ddc, unsigned int offset,
+ unsigned int val)
+{
+ writel(readl(ddc->regs + offset) | val, ddc->regs + offset);
+}
+
+static inline void sif_clr_bit(struct mtk_hdmi_ddc *ddc, unsigned int offset,
+ unsigned int val)
+{
+ writel(readl(ddc->regs + offset) & ~val, ddc->regs + offset);
+}
+
+static inline bool sif_bit_is_set(struct mtk_hdmi_ddc *ddc, unsigned int offset,
+ unsigned int val)
+{
+ return (readl(ddc->regs + offset) & val) == val;
+}
+
+static inline void sif_write_mask(struct mtk_hdmi_ddc *ddc, unsigned int offset,
+ unsigned int mask, unsigned int shift,
+ unsigned int val)
+{
+ unsigned int tmp;
+
+ tmp = readl(ddc->regs + offset);
+ tmp &= ~mask;
+ tmp |= (val << shift) & mask;
+ writel(tmp, ddc->regs + offset);
+}
+
+static inline unsigned int sif_read_mask(struct mtk_hdmi_ddc *ddc,
+ unsigned int offset, unsigned int mask,
+ unsigned int shift)
+{
+ return (readl(ddc->regs + offset) & mask) >> shift;
+}
+
+static void ddcm_trigger_mode(struct mtk_hdmi_ddc *ddc, int mode)
+{
+ u32 val;
+
+ sif_write_mask(ddc, DDC_DDCMCTL1, DDCM_SIF_MODE_MASK,
+ DDCM_SIF_MODE_OFFSET, mode);
+ sif_set_bit(ddc, DDC_DDCMCTL1, DDCM_TRI);
+ readl_poll_timeout(ddc->regs + DDC_DDCMCTL1, val,
+ (val & DDCM_TRI) != DDCM_TRI, 4, 20000);
+}
+
+static int mtk_hdmi_ddc_read_msg(struct mtk_hdmi_ddc *ddc, struct i2c_msg *msg)
+{
+ struct device *dev = ddc->adap.dev.parent;
+ u32 remain_count, ack_count, ack_final, read_count, temp_count;
+ u32 index = 0;
+ u32 ack;
+ int i;
+
+ ddcm_trigger_mode(ddc, DDCM_START);
+ sif_write_mask(ddc, DDC_DDCMD0, 0xff, 0, (msg->addr << 1) | 0x01);
+ sif_write_mask(ddc, DDC_DDCMCTL1, DDCM_PGLEN_MASK, DDCM_PGLEN_OFFSET,
+ 0x00);
+ ddcm_trigger_mode(ddc, DDCM_WRITE_DATA);
+ ack = sif_read_mask(ddc, DDC_DDCMCTL1, DDCM_ACK_MASK, DDCM_ACK_OFFSET);
+ dev_dbg(dev, "ack = 0x%x\n", ack);
+ if (ack != 0x01) {
+ dev_err(dev, "i2c ack err!\n");
+ return -ENXIO;
+ }
+
+ remain_count = msg->len;
+ ack_count = (msg->len - 1) / 8;
+ ack_final = 0;
+
+ while (remain_count > 0) {
+ if (ack_count > 0) {
+ read_count = 8;
+ ack_final = 0;
+ ack_count--;
+ } else {
+ read_count = remain_count;
+ ack_final = 1;
+ }
+
+ sif_write_mask(ddc, DDC_DDCMCTL1, DDCM_PGLEN_MASK,
+ DDCM_PGLEN_OFFSET, read_count - 1);
+ ddcm_trigger_mode(ddc, (ack_final == 1) ?
+ DDCM_READ_DATA_NO_ACK :
+ DDCM_READ_DATA_ACK);
+
+ ack = sif_read_mask(ddc, DDC_DDCMCTL1, DDCM_ACK_MASK,
+ DDCM_ACK_OFFSET);
+ temp_count = 0;
+ while (((ack & (1 << temp_count)) != 0) && (temp_count < 8))
+ temp_count++;
+ if (((ack_final == 1) && (temp_count != (read_count - 1))) ||
+ ((ack_final == 0) && (temp_count != read_count))) {
+ dev_err(dev, "Address NACK! ACK(0x%x)\n", ack);
+ break;
+ }
+
+ for (i = read_count; i >= 1; i--) {
+ int shift;
+ int offset;
+
+ if (i > 4) {
+ offset = DDC_DDCMD1;
+ shift = (i - 5) * 8;
+ } else {
+ offset = DDC_DDCMD0;
+ shift = (i - 1) * 8;
+ }
+
+ msg->buf[index + i - 1] = sif_read_mask(ddc, offset,
+ 0xff << shift,
+ shift);
+ }
+
+ remain_count -= read_count;
+ index += read_count;
+ }
+
+ return 0;
+}
+
+static int mtk_hdmi_ddc_write_msg(struct mtk_hdmi_ddc *ddc, struct i2c_msg *msg)
+{
+ struct device *dev = ddc->adap.dev.parent;
+ u32 ack;
+
+ ddcm_trigger_mode(ddc, DDCM_START);
+ sif_write_mask(ddc, DDC_DDCMD0, DDCM_DATA0, 0, msg->addr << 1);
+ sif_write_mask(ddc, DDC_DDCMD0, DDCM_DATA1, 8, msg->buf[0]);
+ sif_write_mask(ddc, DDC_DDCMCTL1, DDCM_PGLEN_MASK, DDCM_PGLEN_OFFSET,
+ 0x1);
+ ddcm_trigger_mode(ddc, DDCM_WRITE_DATA);
+
+ ack = sif_read_mask(ddc, DDC_DDCMCTL1, DDCM_ACK_MASK, DDCM_ACK_OFFSET);
+ dev_dbg(dev, "ack = %d\n", ack);
+
+ if (ack != 0x03) {
+ dev_err(dev, "i2c ack err!\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int mtk_hdmi_ddc_xfer(struct i2c_adapter *adapter,
+ struct i2c_msg *msgs, int num)
+{
+ struct mtk_hdmi_ddc *ddc = adapter->algo_data;
+ struct device *dev = adapter->dev.parent;
+ int ret;
+ int i;
+
+ if (!ddc) {
+ dev_err(dev, "invalid arguments\n");
+ return -EINVAL;
+ }
+
+ sif_set_bit(ddc, DDC_DDCMCTL0, DDCM_SCL_STRECH);
+ sif_set_bit(ddc, DDC_DDCMCTL0, DDCM_SM0EN);
+ sif_clr_bit(ddc, DDC_DDCMCTL0, DDCM_ODRAIN);
+
+ if (sif_bit_is_set(ddc, DDC_DDCMCTL1, DDCM_TRI)) {
+ dev_err(dev, "ddc line is busy!\n");
+ return -EBUSY;
+ }
+
+ sif_write_mask(ddc, DDC_DDCMCTL0, DDCM_CLK_DIV_MASK,
+ DDCM_CLK_DIV_OFFSET, SIF1_CLOK);
+
+ for (i = 0; i < num; i++) {
+ struct i2c_msg *msg = &msgs[i];
+
+ dev_dbg(dev, "i2c msg, adr:0x%x, flags:%d, len :0x%x\n",
+ msg->addr, msg->flags, msg->len);
+
+ if (msg->flags & I2C_M_RD)
+ ret = mtk_hdmi_ddc_read_msg(ddc, msg);
+ else
+ ret = mtk_hdmi_ddc_write_msg(ddc, msg);
+ if (ret < 0)
+ goto xfer_end;
+ }
+
+ ddcm_trigger_mode(ddc, DDCM_STOP);
+
+ return i;
+
+xfer_end:
+ ddcm_trigger_mode(ddc, DDCM_STOP);
+ dev_err(dev, "ddc failed!\n");
+ return ret;
+}
+
+static u32 mtk_hdmi_ddc_func(struct i2c_adapter *adapter)
+{
+ return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
+}
+
+static const struct i2c_algorithm mtk_hdmi_ddc_algorithm = {
+ .master_xfer = mtk_hdmi_ddc_xfer,
+ .functionality = mtk_hdmi_ddc_func,
+};
+
+static int mtk_hdmi_ddc_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct mtk_hdmi_ddc *ddc;
+ struct resource *mem;
+ int ret;
+
+ ddc = devm_kzalloc(dev, sizeof(struct mtk_hdmi_ddc), GFP_KERNEL);
+ if (!ddc)
+ return -ENOMEM;
+
+ ddc->clk = devm_clk_get(dev, "ddc-i2c");
+ if (IS_ERR(ddc->clk)) {
+ dev_err(dev, "get ddc_clk failed: %p ,\n", ddc->clk);
+ return PTR_ERR(ddc->clk);
+ }
+
+ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ ddc->regs = devm_ioremap_resource(&pdev->dev, mem);
+ if (IS_ERR(ddc->regs))
+ return PTR_ERR(ddc->regs);
+
+ ret = clk_prepare_enable(ddc->clk);
+ if (ret) {
+ dev_err(dev, "enable ddc clk failed!\n");
+ return ret;
+ }
+
+ strlcpy(ddc->adap.name, "mediatek-hdmi-ddc", sizeof(ddc->adap.name));
+ ddc->adap.owner = THIS_MODULE;
+ ddc->adap.class = I2C_CLASS_DDC;
+ ddc->adap.algo = &mtk_hdmi_ddc_algorithm;
+ ddc->adap.retries = 3;
+ ddc->adap.dev.of_node = dev->of_node;
+ ddc->adap.algo_data = ddc;
+ ddc->adap.dev.parent = &pdev->dev;
+
+ ret = i2c_add_adapter(&ddc->adap);
+ if (ret < 0) {
+ dev_err(dev, "failed to add bus to i2c core\n");
+ goto err_clk_disable;
+ }
+
+ platform_set_drvdata(pdev, ddc);
+
+ dev_dbg(dev, "ddc->adap: %p\n", &ddc->adap);
+ dev_dbg(dev, "ddc->clk: %p\n", ddc->clk);
+ dev_dbg(dev, "physical adr: %pa, end: %pa\n", &mem->start,
+ &mem->end);
+
+ return 0;
+
+err_clk_disable:
+ clk_disable_unprepare(ddc->clk);
+ return ret;
+}
+
+static int mtk_hdmi_ddc_remove(struct platform_device *pdev)
+{
+ struct mtk_hdmi_ddc *ddc = platform_get_drvdata(pdev);
+
+ i2c_del_adapter(&ddc->adap);
+ clk_disable_unprepare(ddc->clk);
+
+ return 0;
+}
+
+static const struct of_device_id mtk_hdmi_ddc_match[] = {
+ { .compatible = "mediatek,mt8173-hdmi-ddc", },
+ {},
+};
+
+struct platform_driver mtk_hdmi_ddc_driver = {
+ .probe = mtk_hdmi_ddc_probe,
+ .remove = mtk_hdmi_ddc_remove,
+ .driver = {
+ .name = "mediatek-hdmi-ddc",
+ .of_match_table = mtk_hdmi_ddc_match,
+ },
+};
+
+MODULE_AUTHOR("Jie Qiu <jie.qiu@mediatek.com>");
+MODULE_DESCRIPTION("MediaTek HDMI DDC Driver");
+MODULE_LICENSE("GPL v2");
--- /dev/null
+/*
+ * Copyright (c) 2014 MediaTek Inc.
+ * Author: Jie Qiu <jie.qiu@mediatek.com>
+ *
+ * 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 <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/types.h>
+
+#define HDMI_CON0 0x00
+#define RG_HDMITX_PLL_EN BIT(31)
+#define RG_HDMITX_PLL_FBKDIV (0x7f << 24)
+#define PLL_FBKDIV_SHIFT 24
+#define RG_HDMITX_PLL_FBKSEL (0x3 << 22)
+#define PLL_FBKSEL_SHIFT 22
+#define RG_HDMITX_PLL_PREDIV (0x3 << 20)
+#define PREDIV_SHIFT 20
+#define RG_HDMITX_PLL_POSDIV (0x3 << 18)
+#define POSDIV_SHIFT 18
+#define RG_HDMITX_PLL_RST_DLY (0x3 << 16)
+#define RG_HDMITX_PLL_IR (0xf << 12)
+#define PLL_IR_SHIFT 12
+#define RG_HDMITX_PLL_IC (0xf << 8)
+#define PLL_IC_SHIFT 8
+#define RG_HDMITX_PLL_BP (0xf << 4)
+#define PLL_BP_SHIFT 4
+#define RG_HDMITX_PLL_BR (0x3 << 2)
+#define PLL_BR_SHIFT 2
+#define RG_HDMITX_PLL_BC (0x3 << 0)
+#define PLL_BC_SHIFT 0
+#define HDMI_CON1 0x04
+#define RG_HDMITX_PLL_DIVEN (0x7 << 29)
+#define PLL_DIVEN_SHIFT 29
+#define RG_HDMITX_PLL_AUTOK_EN BIT(28)
+#define RG_HDMITX_PLL_AUTOK_KF (0x3 << 26)
+#define RG_HDMITX_PLL_AUTOK_KS (0x3 << 24)
+#define RG_HDMITX_PLL_AUTOK_LOAD BIT(23)
+#define RG_HDMITX_PLL_BAND (0x3f << 16)
+#define RG_HDMITX_PLL_REF_SEL BIT(15)
+#define RG_HDMITX_PLL_BIAS_EN BIT(14)
+#define RG_HDMITX_PLL_BIAS_LPF_EN BIT(13)
+#define RG_HDMITX_PLL_TXDIV_EN BIT(12)
+#define RG_HDMITX_PLL_TXDIV (0x3 << 10)
+#define PLL_TXDIV_SHIFT 10
+#define RG_HDMITX_PLL_LVROD_EN BIT(9)
+#define RG_HDMITX_PLL_MONVC_EN BIT(8)
+#define RG_HDMITX_PLL_MONCK_EN BIT(7)
+#define RG_HDMITX_PLL_MONREF_EN BIT(6)
+#define RG_HDMITX_PLL_TST_EN BIT(5)
+#define RG_HDMITX_PLL_TST_CK_EN BIT(4)
+#define RG_HDMITX_PLL_TST_SEL (0xf << 0)
+#define HDMI_CON2 0x08
+#define RGS_HDMITX_PLL_AUTOK_BAND (0x7f << 8)
+#define RGS_HDMITX_PLL_AUTOK_FAIL BIT(1)
+#define RG_HDMITX_EN_TX_CKLDO BIT(0)
+#define HDMI_CON3 0x0c
+#define RG_HDMITX_SER_EN (0xf << 28)
+#define RG_HDMITX_PRD_EN (0xf << 24)
+#define RG_HDMITX_PRD_IMP_EN (0xf << 20)
+#define RG_HDMITX_DRV_EN (0xf << 16)
+#define RG_HDMITX_DRV_IMP_EN (0xf << 12)
+#define DRV_IMP_EN_SHIFT 12
+#define RG_HDMITX_MHLCK_FORCE BIT(10)
+#define RG_HDMITX_MHLCK_PPIX_EN BIT(9)
+#define RG_HDMITX_MHLCK_EN BIT(8)
+#define RG_HDMITX_SER_DIN_SEL (0xf << 4)
+#define RG_HDMITX_SER_5T1_BIST_EN BIT(3)
+#define RG_HDMITX_SER_BIST_TOG BIT(2)
+#define RG_HDMITX_SER_DIN_TOG BIT(1)
+#define RG_HDMITX_SER_CLKDIG_INV BIT(0)
+#define HDMI_CON4 0x10
+#define RG_HDMITX_PRD_IBIAS_CLK (0xf << 24)
+#define RG_HDMITX_PRD_IBIAS_D2 (0xf << 16)
+#define RG_HDMITX_PRD_IBIAS_D1 (0xf << 8)
+#define RG_HDMITX_PRD_IBIAS_D0 (0xf << 0)
+#define PRD_IBIAS_CLK_SHIFT 24
+#define PRD_IBIAS_D2_SHIFT 16
+#define PRD_IBIAS_D1_SHIFT 8
+#define PRD_IBIAS_D0_SHIFT 0
+#define HDMI_CON5 0x14
+#define RG_HDMITX_DRV_IBIAS_CLK (0x3f << 24)
+#define RG_HDMITX_DRV_IBIAS_D2 (0x3f << 16)
+#define RG_HDMITX_DRV_IBIAS_D1 (0x3f << 8)
+#define RG_HDMITX_DRV_IBIAS_D0 (0x3f << 0)
+#define DRV_IBIAS_CLK_SHIFT 24
+#define DRV_IBIAS_D2_SHIFT 16
+#define DRV_IBIAS_D1_SHIFT 8
+#define DRV_IBIAS_D0_SHIFT 0
+#define HDMI_CON6 0x18
+#define RG_HDMITX_DRV_IMP_CLK (0x3f << 24)
+#define RG_HDMITX_DRV_IMP_D2 (0x3f << 16)
+#define RG_HDMITX_DRV_IMP_D1 (0x3f << 8)
+#define RG_HDMITX_DRV_IMP_D0 (0x3f << 0)
+#define DRV_IMP_CLK_SHIFT 24
+#define DRV_IMP_D2_SHIFT 16
+#define DRV_IMP_D1_SHIFT 8
+#define DRV_IMP_D0_SHIFT 0
+#define HDMI_CON7 0x1c
+#define RG_HDMITX_MHLCK_DRV_IBIAS (0x1f << 27)
+#define RG_HDMITX_SER_DIN (0x3ff << 16)
+#define RG_HDMITX_CHLDC_TST (0xf << 12)
+#define RG_HDMITX_CHLCK_TST (0xf << 8)
+#define RG_HDMITX_RESERVE (0xff << 0)
+#define HDMI_CON8 0x20
+#define RGS_HDMITX_2T1_LEV (0xf << 16)
+#define RGS_HDMITX_2T1_EDG (0xf << 12)
+#define RGS_HDMITX_5T1_LEV (0xf << 8)
+#define RGS_HDMITX_5T1_EDG (0xf << 4)
+#define RGS_HDMITX_PLUG_TST BIT(0)
+
+struct mtk_hdmi_phy {
+ void __iomem *regs;
+ struct device *dev;
+ struct clk *pll;
+ struct clk_hw pll_hw;
+ unsigned long pll_rate;
+ u8 drv_imp_clk;
+ u8 drv_imp_d2;
+ u8 drv_imp_d1;
+ u8 drv_imp_d0;
+ u32 ibias;
+ u32 ibias_up;
+};
+
+static const u8 PREDIV[3][4] = {
+ {0x0, 0x0, 0x0, 0x0}, /* 27Mhz */
+ {0x1, 0x1, 0x1, 0x1}, /* 74Mhz */
+ {0x1, 0x1, 0x1, 0x1} /* 148Mhz */
+};
+
+static const u8 TXDIV[3][4] = {
+ {0x3, 0x3, 0x3, 0x2}, /* 27Mhz */
+ {0x2, 0x1, 0x1, 0x1}, /* 74Mhz */
+ {0x1, 0x0, 0x0, 0x0} /* 148Mhz */
+};
+
+static const u8 FBKSEL[3][4] = {
+ {0x1, 0x1, 0x1, 0x1}, /* 27Mhz */
+ {0x1, 0x0, 0x1, 0x1}, /* 74Mhz */
+ {0x1, 0x0, 0x1, 0x1} /* 148Mhz */
+};
+
+static const u8 FBKDIV[3][4] = {
+ {19, 24, 29, 19}, /* 27Mhz */
+ {19, 24, 14, 19}, /* 74Mhz */
+ {19, 24, 14, 19} /* 148Mhz */
+};
+
+static const u8 DIVEN[3][4] = {
+ {0x2, 0x1, 0x1, 0x2}, /* 27Mhz */
+ {0x2, 0x2, 0x2, 0x2}, /* 74Mhz */
+ {0x2, 0x2, 0x2, 0x2} /* 148Mhz */
+};
+
+static const u8 HTPLLBP[3][4] = {
+ {0xc, 0xc, 0x8, 0xc}, /* 27Mhz */
+ {0xc, 0xf, 0xf, 0xc}, /* 74Mhz */
+ {0xc, 0xf, 0xf, 0xc} /* 148Mhz */
+};
+
+static const u8 HTPLLBC[3][4] = {
+ {0x2, 0x3, 0x3, 0x2}, /* 27Mhz */
+ {0x2, 0x3, 0x3, 0x2}, /* 74Mhz */
+ {0x2, 0x3, 0x3, 0x2} /* 148Mhz */
+};
+
+static const u8 HTPLLBR[3][4] = {
+ {0x1, 0x1, 0x0, 0x1}, /* 27Mhz */
+ {0x1, 0x2, 0x2, 0x1}, /* 74Mhz */
+ {0x1, 0x2, 0x2, 0x1} /* 148Mhz */
+};
+
+static void mtk_hdmi_phy_clear_bits(struct mtk_hdmi_phy *hdmi_phy, u32 offset,
+ u32 bits)
+{
+ void __iomem *reg = hdmi_phy->regs + offset;
+ u32 tmp;
+
+ tmp = readl(reg);
+ tmp &= ~bits;
+ writel(tmp, reg);
+}
+
+static void mtk_hdmi_phy_set_bits(struct mtk_hdmi_phy *hdmi_phy, u32 offset,
+ u32 bits)
+{
+ void __iomem *reg = hdmi_phy->regs + offset;
+ u32 tmp;
+
+ tmp = readl(reg);
+ tmp |= bits;
+ writel(tmp, reg);
+}
+
+static void mtk_hdmi_phy_mask(struct mtk_hdmi_phy *hdmi_phy, u32 offset,
+ u32 val, u32 mask)
+{
+ void __iomem *reg = hdmi_phy->regs + offset;
+ u32 tmp;
+
+ tmp = readl(reg);
+ tmp = (tmp & ~mask) | (val & mask);
+ writel(tmp, reg);
+}
+
+static inline struct mtk_hdmi_phy *to_mtk_hdmi_phy(struct clk_hw *hw)
+{
+ return container_of(hw, struct mtk_hdmi_phy, pll_hw);
+}
+
+static int mtk_hdmi_pll_prepare(struct clk_hw *hw)
+{
+ struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
+
+ dev_dbg(hdmi_phy->dev, "%s\n", __func__);
+
+ mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON1, RG_HDMITX_PLL_AUTOK_EN);
+ mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_PLL_POSDIV);
+ mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON3, RG_HDMITX_MHLCK_EN);
+ mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON1, RG_HDMITX_PLL_BIAS_EN);
+ usleep_range(100, 150);
+ mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_PLL_EN);
+ usleep_range(100, 150);
+ mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON1, RG_HDMITX_PLL_BIAS_LPF_EN);
+ mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON1, RG_HDMITX_PLL_TXDIV_EN);
+
+ return 0;
+}
+
+static void mtk_hdmi_pll_unprepare(struct clk_hw *hw)
+{
+ struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
+
+ dev_dbg(hdmi_phy->dev, "%s\n", __func__);
+
+ mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON1, RG_HDMITX_PLL_TXDIV_EN);
+ mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON1, RG_HDMITX_PLL_BIAS_LPF_EN);
+ usleep_range(100, 150);
+ mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_PLL_EN);
+ usleep_range(100, 150);
+ mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON1, RG_HDMITX_PLL_BIAS_EN);
+ mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_PLL_POSDIV);
+ mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON1, RG_HDMITX_PLL_AUTOK_EN);
+ usleep_range(100, 150);
+}
+
+static int mtk_hdmi_pll_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
+ unsigned int pre_div;
+ unsigned int div;
+
+ dev_dbg(hdmi_phy->dev, "%s: %lu Hz, parent: %lu Hz\n", __func__,
+ rate, parent_rate);
+
+ if (rate <= 27000000) {
+ pre_div = 0;
+ div = 3;
+ } else if (rate <= 74250000) {
+ pre_div = 1;
+ div = 2;
+ } else {
+ pre_div = 1;
+ div = 1;
+ }
+
+ mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON0,
+ (pre_div << PREDIV_SHIFT), RG_HDMITX_PLL_PREDIV);
+ mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_PLL_POSDIV);
+ mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON0,
+ (0x1 << PLL_IC_SHIFT) | (0x1 << PLL_IR_SHIFT),
+ RG_HDMITX_PLL_IC | RG_HDMITX_PLL_IR);
+ mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON1,
+ (div << PLL_TXDIV_SHIFT), RG_HDMITX_PLL_TXDIV);
+ mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON0,
+ (0x1 << PLL_FBKSEL_SHIFT) | (19 << PLL_FBKDIV_SHIFT),
+ RG_HDMITX_PLL_FBKSEL | RG_HDMITX_PLL_FBKDIV);
+ mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON1,
+ (0x2 << PLL_DIVEN_SHIFT), RG_HDMITX_PLL_DIVEN);
+ mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON0,
+ (0xc << PLL_BP_SHIFT) | (0x2 << PLL_BC_SHIFT) |
+ (0x1 << PLL_BR_SHIFT),
+ RG_HDMITX_PLL_BP | RG_HDMITX_PLL_BC |
+ RG_HDMITX_PLL_BR);
+ mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON3, RG_HDMITX_PRD_IMP_EN);
+ mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON4,
+ (0x3 << PRD_IBIAS_CLK_SHIFT) |
+ (0x3 << PRD_IBIAS_D2_SHIFT) |
+ (0x3 << PRD_IBIAS_D1_SHIFT) |
+ (0x3 << PRD_IBIAS_D0_SHIFT),
+ RG_HDMITX_PRD_IBIAS_CLK |
+ RG_HDMITX_PRD_IBIAS_D2 |
+ RG_HDMITX_PRD_IBIAS_D1 |
+ RG_HDMITX_PRD_IBIAS_D0);
+ mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON3,
+ (0x0 << DRV_IMP_EN_SHIFT), RG_HDMITX_DRV_IMP_EN);
+ mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON6,
+ (hdmi_phy->drv_imp_clk << DRV_IMP_CLK_SHIFT) |
+ (hdmi_phy->drv_imp_d2 << DRV_IMP_D2_SHIFT) |
+ (hdmi_phy->drv_imp_d1 << DRV_IMP_D1_SHIFT) |
+ (hdmi_phy->drv_imp_d0 << DRV_IMP_D0_SHIFT),
+ RG_HDMITX_DRV_IMP_CLK | RG_HDMITX_DRV_IMP_D2 |
+ RG_HDMITX_DRV_IMP_D1 | RG_HDMITX_DRV_IMP_D0);
+ mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON5,
+ (hdmi_phy->ibias << DRV_IBIAS_CLK_SHIFT) |
+ (hdmi_phy->ibias << DRV_IBIAS_D2_SHIFT) |
+ (hdmi_phy->ibias << DRV_IBIAS_D1_SHIFT) |
+ (hdmi_phy->ibias << DRV_IBIAS_D0_SHIFT),
+ RG_HDMITX_DRV_IBIAS_CLK | RG_HDMITX_DRV_IBIAS_D2 |
+ RG_HDMITX_DRV_IBIAS_D1 | RG_HDMITX_DRV_IBIAS_D0);
+ return 0;
+}
+
+static long mtk_hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
+
+ hdmi_phy->pll_rate = rate;
+ if (rate <= 74250000)
+ *parent_rate = rate;
+ else
+ *parent_rate = rate / 2;
+
+ return rate;
+}
+
+static unsigned long mtk_hdmi_pll_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
+
+ return hdmi_phy->pll_rate;
+}
+
+static const struct clk_ops mtk_hdmi_pll_ops = {
+ .prepare = mtk_hdmi_pll_prepare,
+ .unprepare = mtk_hdmi_pll_unprepare,
+ .set_rate = mtk_hdmi_pll_set_rate,
+ .round_rate = mtk_hdmi_pll_round_rate,
+ .recalc_rate = mtk_hdmi_pll_recalc_rate,
+};
+
+static void mtk_hdmi_phy_enable_tmds(struct mtk_hdmi_phy *hdmi_phy)
+{
+ mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON3,
+ RG_HDMITX_SER_EN | RG_HDMITX_PRD_EN |
+ RG_HDMITX_DRV_EN);
+ usleep_range(100, 150);
+}
+
+static void mtk_hdmi_phy_disable_tmds(struct mtk_hdmi_phy *hdmi_phy)
+{
+ mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON3,
+ RG_HDMITX_DRV_EN | RG_HDMITX_PRD_EN |
+ RG_HDMITX_SER_EN);
+}
+
+static int mtk_hdmi_phy_power_on(struct phy *phy)
+{
+ struct mtk_hdmi_phy *hdmi_phy = phy_get_drvdata(phy);
+ int ret;
+
+ ret = clk_prepare_enable(hdmi_phy->pll);
+ if (ret < 0)
+ return ret;
+
+ mtk_hdmi_phy_enable_tmds(hdmi_phy);
+
+ return 0;
+}
+
+static int mtk_hdmi_phy_power_off(struct phy *phy)
+{
+ struct mtk_hdmi_phy *hdmi_phy = phy_get_drvdata(phy);
+
+ mtk_hdmi_phy_disable_tmds(hdmi_phy);
+ clk_disable_unprepare(hdmi_phy->pll);
+
+ return 0;
+}
+
+static const struct phy_ops mtk_hdmi_phy_ops = {
+ .power_on = mtk_hdmi_phy_power_on,
+ .power_off = mtk_hdmi_phy_power_off,
+ .owner = THIS_MODULE,
+};
+
+static int mtk_hdmi_phy_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct mtk_hdmi_phy *hdmi_phy;
+ struct resource *mem;
+ struct clk *ref_clk;
+ const char *ref_clk_name;
+ struct clk_init_data clk_init = {
+ .ops = &mtk_hdmi_pll_ops,
+ .num_parents = 1,
+ .parent_names = (const char * const *)&ref_clk_name,
+ .flags = CLK_SET_RATE_PARENT | CLK_SET_RATE_GATE,
+ };
+ struct phy *phy;
+ struct phy_provider *phy_provider;
+ int ret;
+
+ hdmi_phy = devm_kzalloc(dev, sizeof(*hdmi_phy), GFP_KERNEL);
+ if (!hdmi_phy)
+ return -ENOMEM;
+
+ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ hdmi_phy->regs = devm_ioremap_resource(dev, mem);
+ if (IS_ERR(hdmi_phy->regs)) {
+ ret = PTR_ERR(hdmi_phy->regs);
+ dev_err(dev, "Failed to get memory resource: %d\n", ret);
+ return ret;
+ }
+
+ ref_clk = devm_clk_get(dev, "pll_ref");
+ if (IS_ERR(ref_clk)) {
+ ret = PTR_ERR(ref_clk);
+ dev_err(&pdev->dev, "Failed to get PLL reference clock: %d\n",
+ ret);
+ return ret;
+ }
+ ref_clk_name = __clk_get_name(ref_clk);
+
+ ret = of_property_read_string(dev->of_node, "clock-output-names",
+ &clk_init.name);
+ if (ret < 0) {
+ dev_err(dev, "Failed to read clock-output-names: %d\n", ret);
+ return ret;
+ }
+
+ hdmi_phy->pll_hw.init = &clk_init;
+ hdmi_phy->pll = devm_clk_register(dev, &hdmi_phy->pll_hw);
+ if (IS_ERR(hdmi_phy->pll)) {
+ ret = PTR_ERR(hdmi_phy->pll);
+ dev_err(dev, "Failed to register PLL: %d\n", ret);
+ return ret;
+ }
+
+ ret = of_property_read_u32(dev->of_node, "mediatek,ibias",
+ &hdmi_phy->ibias);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to get ibias: %d\n", ret);
+ return ret;
+ }
+
+ ret = of_property_read_u32(dev->of_node, "mediatek,ibias_up",
+ &hdmi_phy->ibias_up);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to get ibias up: %d\n", ret);
+ return ret;
+ }
+
+ dev_info(dev, "Using default TX DRV impedance: 4.2k/36\n");
+ hdmi_phy->drv_imp_clk = 0x30;
+ hdmi_phy->drv_imp_d2 = 0x30;
+ hdmi_phy->drv_imp_d1 = 0x30;
+ hdmi_phy->drv_imp_d0 = 0x30;
+
+ phy = devm_phy_create(dev, NULL, &mtk_hdmi_phy_ops);
+ if (IS_ERR(phy)) {
+ dev_err(dev, "Failed to create HDMI PHY\n");
+ return PTR_ERR(phy);
+ }
+ phy_set_drvdata(phy, hdmi_phy);
+
+ phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
+ if (IS_ERR(phy_provider))
+ return PTR_ERR(phy_provider);
+
+ hdmi_phy->dev = dev;
+ return of_clk_add_provider(dev->of_node, of_clk_src_simple_get,
+ hdmi_phy->pll);
+}
+
+static int mtk_hdmi_phy_remove(struct platform_device *pdev)
+{
+ return 0;
+}
+
+static const struct of_device_id mtk_hdmi_phy_match[] = {
+ { .compatible = "mediatek,mt8173-hdmi-phy", },
+ {},
+};
+
+struct platform_driver mtk_hdmi_phy_driver = {
+ .probe = mtk_hdmi_phy_probe,
+ .remove = mtk_hdmi_phy_remove,
+ .driver = {
+ .name = "mediatek-hdmi-phy",
+ .of_match_table = mtk_hdmi_phy_match,
+ },
+};
+
+MODULE_AUTHOR("Jie Qiu <jie.qiu@mediatek.com>");
+MODULE_DESCRIPTION("MediaTek MT8173 HDMI PHY Driver");
+MODULE_LICENSE("GPL v2");
projects / openwrt / staging / blogic.git / commitdiff