| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Jyri Sarha | 2772 | 61.64% | 2 | 11.76% |
| Boris Brezillon | 1083 | 24.08% | 2 | 11.76% |
| Fabrizio Castro | 475 | 10.56% | 1 | 5.88% |
| Olivier Moysan | 98 | 2.18% | 3 | 17.65% |
| Tomi Valkeinen | 26 | 0.58% | 1 | 5.88% |
| Laurent Pinchart | 21 | 0.47% | 1 | 5.88% |
| Dan Carpenter | 8 | 0.18% | 1 | 5.88% |
| Sam Ravnborg | 5 | 0.11% | 1 | 5.88% |
| Ville Syrjälä | 3 | 0.07% | 1 | 5.88% |
| Daniel Vetter | 2 | 0.04% | 1 | 5.88% |
| Thomas Gleixner | 2 | 0.04% | 1 | 5.88% |
| Colin Ian King | 1 | 0.02% | 1 | 5.88% |
| Yue haibing | 1 | 0.02% | 1 | 5.88% |
| Total | 4497 | 17 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (C) 2018 Renesas Electronics * * Copyright (C) 2016 Atmel * Bo Shen <voice.shen@atmel.com> * * Authors: Bo Shen <voice.shen@atmel.com> * Boris Brezillon <boris.brezillon@free-electrons.com> * Wu, Songjun <Songjun.Wu@atmel.com> * * Copyright (C) 2010-2011 Freescale Semiconductor, Inc. All Rights Reserved. */ #include <linux/gpio/consumer.h> #include <linux/i2c-mux.h> #include <linux/i2c.h> #include <linux/module.h> #include <linux/regmap.h> #include <linux/clk.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_bridge.h> #include <drm/drm_drv.h> #include <drm/drm_edid.h> #include <drm/drm_print.h> #include <drm/drm_probe_helper.h> #include <sound/hdmi-codec.h> #define SII902X_TPI_VIDEO_DATA 0x0 #define SII902X_TPI_PIXEL_REPETITION 0x8 #define SII902X_TPI_AVI_PIXEL_REP_BUS_24BIT BIT(5) #define SII902X_TPI_AVI_PIXEL_REP_RISING_EDGE BIT(4) #define SII902X_TPI_AVI_PIXEL_REP_4X 3 #define SII902X_TPI_AVI_PIXEL_REP_2X 1 #define SII902X_TPI_AVI_PIXEL_REP_NONE 0 #define SII902X_TPI_CLK_RATIO_HALF (0 << 6) #define SII902X_TPI_CLK_RATIO_1X (1 << 6) #define SII902X_TPI_CLK_RATIO_2X (2 << 6) #define SII902X_TPI_CLK_RATIO_4X (3 << 6) #define SII902X_TPI_AVI_IN_FORMAT 0x9 #define SII902X_TPI_AVI_INPUT_BITMODE_12BIT BIT(7) #define SII902X_TPI_AVI_INPUT_DITHER BIT(6) #define SII902X_TPI_AVI_INPUT_RANGE_LIMITED (2 << 2) #define SII902X_TPI_AVI_INPUT_RANGE_FULL (1 << 2) #define SII902X_TPI_AVI_INPUT_RANGE_AUTO (0 << 2) #define SII902X_TPI_AVI_INPUT_COLORSPACE_BLACK (3 << 0) #define SII902X_TPI_AVI_INPUT_COLORSPACE_YUV422 (2 << 0) #define SII902X_TPI_AVI_INPUT_COLORSPACE_YUV444 (1 << 0) #define SII902X_TPI_AVI_INPUT_COLORSPACE_RGB (0 << 0) #define SII902X_TPI_AVI_INFOFRAME 0x0c #define SII902X_SYS_CTRL_DATA 0x1a #define SII902X_SYS_CTRL_PWR_DWN BIT(4) #define SII902X_SYS_CTRL_AV_MUTE BIT(3) #define SII902X_SYS_CTRL_DDC_BUS_REQ BIT(2) #define SII902X_SYS_CTRL_DDC_BUS_GRTD BIT(1) #define SII902X_SYS_CTRL_OUTPUT_MODE BIT(0) #define SII902X_SYS_CTRL_OUTPUT_HDMI 1 #define SII902X_SYS_CTRL_OUTPUT_DVI 0 #define SII902X_REG_CHIPID(n) (0x1b + (n)) #define SII902X_PWR_STATE_CTRL 0x1e #define SII902X_AVI_POWER_STATE_MSK GENMASK(1, 0) #define SII902X_AVI_POWER_STATE_D(l) ((l) & SII902X_AVI_POWER_STATE_MSK) /* Audio */ #define SII902X_TPI_I2S_ENABLE_MAPPING_REG 0x1f #define SII902X_TPI_I2S_CONFIG_FIFO0 (0 << 0) #define SII902X_TPI_I2S_CONFIG_FIFO1 (1 << 0) #define SII902X_TPI_I2S_CONFIG_FIFO2 (2 << 0) #define SII902X_TPI_I2S_CONFIG_FIFO3 (3 << 0) #define SII902X_TPI_I2S_LEFT_RIGHT_SWAP (1 << 2) #define SII902X_TPI_I2S_AUTO_DOWNSAMPLE (1 << 3) #define SII902X_TPI_I2S_SELECT_SD0 (0 << 4) #define SII902X_TPI_I2S_SELECT_SD1 (1 << 4) #define SII902X_TPI_I2S_SELECT_SD2 (2 << 4) #define SII902X_TPI_I2S_SELECT_SD3 (3 << 4) #define SII902X_TPI_I2S_FIFO_ENABLE (1 << 7) #define SII902X_TPI_I2S_INPUT_CONFIG_REG 0x20 #define SII902X_TPI_I2S_FIRST_BIT_SHIFT_YES (0 << 0) #define SII902X_TPI_I2S_FIRST_BIT_SHIFT_NO (1 << 0) #define SII902X_TPI_I2S_SD_DIRECTION_MSB_FIRST (0 << 1) #define SII902X_TPI_I2S_SD_DIRECTION_LSB_FIRST (1 << 1) #define SII902X_TPI_I2S_SD_JUSTIFY_LEFT (0 << 2) #define SII902X_TPI_I2S_SD_JUSTIFY_RIGHT (1 << 2) #define SII902X_TPI_I2S_WS_POLARITY_LOW (0 << 3) #define SII902X_TPI_I2S_WS_POLARITY_HIGH (1 << 3) #define SII902X_TPI_I2S_MCLK_MULTIPLIER_128 (0 << 4) #define SII902X_TPI_I2S_MCLK_MULTIPLIER_256 (1 << 4) #define SII902X_TPI_I2S_MCLK_MULTIPLIER_384 (2 << 4) #define SII902X_TPI_I2S_MCLK_MULTIPLIER_512 (3 << 4) #define SII902X_TPI_I2S_MCLK_MULTIPLIER_768 (4 << 4) #define SII902X_TPI_I2S_MCLK_MULTIPLIER_1024 (5 << 4) #define SII902X_TPI_I2S_MCLK_MULTIPLIER_1152 (6 << 4) #define SII902X_TPI_I2S_MCLK_MULTIPLIER_192 (7 << 4) #define SII902X_TPI_I2S_SCK_EDGE_FALLING (0 << 7) #define SII902X_TPI_I2S_SCK_EDGE_RISING (1 << 7) #define SII902X_TPI_I2S_STRM_HDR_BASE 0x21 #define SII902X_TPI_I2S_STRM_HDR_SIZE 5 #define SII902X_TPI_AUDIO_CONFIG_BYTE2_REG 0x26 #define SII902X_TPI_AUDIO_CODING_STREAM_HEADER (0 << 0) #define SII902X_TPI_AUDIO_CODING_PCM (1 << 0) #define SII902X_TPI_AUDIO_CODING_AC3 (2 << 0) #define SII902X_TPI_AUDIO_CODING_MPEG1 (3 << 0) #define SII902X_TPI_AUDIO_CODING_MP3 (4 << 0) #define SII902X_TPI_AUDIO_CODING_MPEG2 (5 << 0) #define SII902X_TPI_AUDIO_CODING_AAC (6 << 0) #define SII902X_TPI_AUDIO_CODING_DTS (7 << 0) #define SII902X_TPI_AUDIO_CODING_ATRAC (8 << 0) #define SII902X_TPI_AUDIO_MUTE_DISABLE (0 << 4) #define SII902X_TPI_AUDIO_MUTE_ENABLE (1 << 4) #define SII902X_TPI_AUDIO_LAYOUT_2_CHANNELS (0 << 5) #define SII902X_TPI_AUDIO_LAYOUT_8_CHANNELS (1 << 5) #define SII902X_TPI_AUDIO_INTERFACE_DISABLE (0 << 6) #define SII902X_TPI_AUDIO_INTERFACE_SPDIF (1 << 6) #define SII902X_TPI_AUDIO_INTERFACE_I2S (2 << 6) #define SII902X_TPI_AUDIO_CONFIG_BYTE3_REG 0x27 #define SII902X_TPI_AUDIO_FREQ_STREAM (0 << 3) #define SII902X_TPI_AUDIO_FREQ_32KHZ (1 << 3) #define SII902X_TPI_AUDIO_FREQ_44KHZ (2 << 3) #define SII902X_TPI_AUDIO_FREQ_48KHZ (3 << 3) #define SII902X_TPI_AUDIO_FREQ_88KHZ (4 << 3) #define SII902X_TPI_AUDIO_FREQ_96KHZ (5 << 3) #define SII902X_TPI_AUDIO_FREQ_176KHZ (6 << 3) #define SII902X_TPI_AUDIO_FREQ_192KHZ (7 << 3) #define SII902X_TPI_AUDIO_SAMPLE_SIZE_STREAM (0 << 6) #define SII902X_TPI_AUDIO_SAMPLE_SIZE_16 (1 << 6) #define SII902X_TPI_AUDIO_SAMPLE_SIZE_20 (2 << 6) #define SII902X_TPI_AUDIO_SAMPLE_SIZE_24 (3 << 6) #define SII902X_TPI_AUDIO_CONFIG_BYTE4_REG 0x28 #define SII902X_INT_ENABLE 0x3c #define SII902X_INT_STATUS 0x3d #define SII902X_HOTPLUG_EVENT BIT(0) #define SII902X_PLUGGED_STATUS BIT(2) #define SII902X_REG_TPI_RQB 0xc7 /* Indirect internal register access */ #define SII902X_IND_SET_PAGE 0xbc #define SII902X_IND_OFFSET 0xbd #define SII902X_IND_VALUE 0xbe #define SII902X_TPI_MISC_INFOFRAME_BASE 0xbf #define SII902X_TPI_MISC_INFOFRAME_END 0xde #define SII902X_TPI_MISC_INFOFRAME_SIZE \ (SII902X_TPI_MISC_INFOFRAME_END - SII902X_TPI_MISC_INFOFRAME_BASE) #define SII902X_I2C_BUS_ACQUISITION_TIMEOUT_MS 500 #define SII902X_AUDIO_PORT_INDEX 3 struct sii902x { struct i2c_client *i2c; struct regmap *regmap; struct drm_bridge bridge; struct drm_connector connector; struct gpio_desc *reset_gpio; struct i2c_mux_core *i2cmux; /* * Mutex protects audio and video functions from interfering * each other, by keeping their i2c command sequences atomic. */ struct mutex mutex; struct sii902x_audio { struct platform_device *pdev; struct clk *mclk; u32 i2s_fifo_sequence[4]; } audio; }; static int sii902x_read_unlocked(struct i2c_client *i2c, u8 reg, u8 *val) { union i2c_smbus_data data; int ret; ret = __i2c_smbus_xfer(i2c->adapter, i2c->addr, i2c->flags, I2C_SMBUS_READ, reg, I2C_SMBUS_BYTE_DATA, &data); if (ret < 0) return ret; *val = data.byte; return 0; } static int sii902x_write_unlocked(struct i2c_client *i2c, u8 reg, u8 val) { union i2c_smbus_data data; data.byte = val; return __i2c_smbus_xfer(i2c->adapter, i2c->addr, i2c->flags, I2C_SMBUS_WRITE, reg, I2C_SMBUS_BYTE_DATA, &data); } static int sii902x_update_bits_unlocked(struct i2c_client *i2c, u8 reg, u8 mask, u8 val) { int ret; u8 status; ret = sii902x_read_unlocked(i2c, reg, &status); if (ret) return ret; status &= ~mask; status |= val & mask; return sii902x_write_unlocked(i2c, reg, status); } static inline struct sii902x *bridge_to_sii902x(struct drm_bridge *bridge) { return container_of(bridge, struct sii902x, bridge); } static inline struct sii902x *connector_to_sii902x(struct drm_connector *con) { return container_of(con, struct sii902x, connector); } static void sii902x_reset(struct sii902x *sii902x) { if (!sii902x->reset_gpio) return; gpiod_set_value(sii902x->reset_gpio, 1); /* The datasheet says treset-min = 100us. Make it 150us to be sure. */ usleep_range(150, 200); gpiod_set_value(sii902x->reset_gpio, 0); } static enum drm_connector_status sii902x_connector_detect(struct drm_connector *connector, bool force) { struct sii902x *sii902x = connector_to_sii902x(connector); unsigned int status; mutex_lock(&sii902x->mutex); regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status); mutex_unlock(&sii902x->mutex); return (status & SII902X_PLUGGED_STATUS) ? connector_status_connected : connector_status_disconnected; } static const struct drm_connector_funcs sii902x_connector_funcs = { .detect = sii902x_connector_detect, .fill_modes = drm_helper_probe_single_connector_modes, .destroy = drm_connector_cleanup, .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 int sii902x_get_modes(struct drm_connector *connector) { struct sii902x *sii902x = connector_to_sii902x(connector); u32 bus_format = MEDIA_BUS_FMT_RGB888_1X24; u8 output_mode = SII902X_SYS_CTRL_OUTPUT_DVI; struct edid *edid; int num = 0, ret; mutex_lock(&sii902x->mutex); edid = drm_get_edid(connector, sii902x->i2cmux->adapter[0]); drm_connector_update_edid_property(connector, edid); if (edid) { if (drm_detect_hdmi_monitor(edid)) output_mode = SII902X_SYS_CTRL_OUTPUT_HDMI; num = drm_add_edid_modes(connector, edid); kfree(edid); } ret = drm_display_info_set_bus_formats(&connector->display_info, &bus_format, 1); if (ret) goto error_out; ret = regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA, SII902X_SYS_CTRL_OUTPUT_MODE, output_mode); if (ret) goto error_out; ret = num; error_out: mutex_unlock(&sii902x->mutex); return ret; } static enum drm_mode_status sii902x_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) { /* TODO: check mode */ return MODE_OK; } static const struct drm_connector_helper_funcs sii902x_connector_helper_funcs = { .get_modes = sii902x_get_modes, .mode_valid = sii902x_mode_valid, }; static void sii902x_bridge_disable(struct drm_bridge *bridge) { struct sii902x *sii902x = bridge_to_sii902x(bridge); mutex_lock(&sii902x->mutex); regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA, SII902X_SYS_CTRL_PWR_DWN, SII902X_SYS_CTRL_PWR_DWN); mutex_unlock(&sii902x->mutex); } static void sii902x_bridge_enable(struct drm_bridge *bridge) { struct sii902x *sii902x = bridge_to_sii902x(bridge); mutex_lock(&sii902x->mutex); regmap_update_bits(sii902x->regmap, SII902X_PWR_STATE_CTRL, SII902X_AVI_POWER_STATE_MSK, SII902X_AVI_POWER_STATE_D(0)); regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA, SII902X_SYS_CTRL_PWR_DWN, 0); mutex_unlock(&sii902x->mutex); } static void sii902x_bridge_mode_set(struct drm_bridge *bridge, const struct drm_display_mode *mode, const struct drm_display_mode *adj) { struct sii902x *sii902x = bridge_to_sii902x(bridge); struct regmap *regmap = sii902x->regmap; u8 buf[HDMI_INFOFRAME_SIZE(AVI)]; struct hdmi_avi_infoframe frame; u16 pixel_clock_10kHz = adj->clock / 10; int ret; buf[0] = pixel_clock_10kHz & 0xff; buf[1] = pixel_clock_10kHz >> 8; buf[2] = adj->vrefresh; buf[3] = 0x00; buf[4] = adj->hdisplay; buf[5] = adj->hdisplay >> 8; buf[6] = adj->vdisplay; buf[7] = adj->vdisplay >> 8; buf[8] = SII902X_TPI_CLK_RATIO_1X | SII902X_TPI_AVI_PIXEL_REP_NONE | SII902X_TPI_AVI_PIXEL_REP_BUS_24BIT; buf[9] = SII902X_TPI_AVI_INPUT_RANGE_AUTO | SII902X_TPI_AVI_INPUT_COLORSPACE_RGB; mutex_lock(&sii902x->mutex); ret = regmap_bulk_write(regmap, SII902X_TPI_VIDEO_DATA, buf, 10); if (ret) goto out; ret = drm_hdmi_avi_infoframe_from_display_mode(&frame, &sii902x->connector, adj); if (ret < 0) { DRM_ERROR("couldn't fill AVI infoframe\n"); goto out; } ret = hdmi_avi_infoframe_pack(&frame, buf, sizeof(buf)); if (ret < 0) { DRM_ERROR("failed to pack AVI infoframe: %d\n", ret); goto out; } /* Do not send the infoframe header, but keep the CRC field. */ regmap_bulk_write(regmap, SII902X_TPI_AVI_INFOFRAME, buf + HDMI_INFOFRAME_HEADER_SIZE - 1, HDMI_AVI_INFOFRAME_SIZE + 1); out: mutex_unlock(&sii902x->mutex); } static int sii902x_bridge_attach(struct drm_bridge *bridge, enum drm_bridge_attach_flags flags) { struct sii902x *sii902x = bridge_to_sii902x(bridge); struct drm_device *drm = bridge->dev; int ret; if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { DRM_ERROR("Fix bridge driver to make connector optional!"); return -EINVAL; } drm_connector_helper_add(&sii902x->connector, &sii902x_connector_helper_funcs); if (!drm_core_check_feature(drm, DRIVER_ATOMIC)) { dev_err(&sii902x->i2c->dev, "sii902x driver is only compatible with DRM devices supporting atomic updates\n"); return -ENOTSUPP; } ret = drm_connector_init(drm, &sii902x->connector, &sii902x_connector_funcs, DRM_MODE_CONNECTOR_HDMIA); if (ret) return ret; if (sii902x->i2c->irq > 0) sii902x->connector.polled = DRM_CONNECTOR_POLL_HPD; else sii902x->connector.polled = DRM_CONNECTOR_POLL_CONNECT; drm_connector_attach_encoder(&sii902x->connector, bridge->encoder); return 0; } static const struct drm_bridge_funcs sii902x_bridge_funcs = { .attach = sii902x_bridge_attach, .mode_set = sii902x_bridge_mode_set, .disable = sii902x_bridge_disable, .enable = sii902x_bridge_enable, }; static int sii902x_mute(struct sii902x *sii902x, bool mute) { struct device *dev = &sii902x->i2c->dev; unsigned int val = mute ? SII902X_TPI_AUDIO_MUTE_ENABLE : SII902X_TPI_AUDIO_MUTE_DISABLE; dev_dbg(dev, "%s: %s\n", __func__, mute ? "Muted" : "Unmuted"); return regmap_update_bits(sii902x->regmap, SII902X_TPI_AUDIO_CONFIG_BYTE2_REG, SII902X_TPI_AUDIO_MUTE_ENABLE, val); } static const int sii902x_mclk_div_table[] = { 128, 256, 384, 512, 768, 1024, 1152, 192 }; static int sii902x_select_mclk_div(u8 *i2s_config_reg, unsigned int rate, unsigned int mclk) { int div = mclk / rate; int distance = 100000; u8 i, nearest = 0; for (i = 0; i < ARRAY_SIZE(sii902x_mclk_div_table); i++) { unsigned int d = abs(div - sii902x_mclk_div_table[i]); if (d >= distance) continue; nearest = i; distance = d; if (d == 0) break; } *i2s_config_reg |= nearest << 4; return sii902x_mclk_div_table[nearest]; } static const struct sii902x_sample_freq { u32 freq; u8 val; } sii902x_sample_freq[] = { { .freq = 32000, .val = SII902X_TPI_AUDIO_FREQ_32KHZ }, { .freq = 44000, .val = SII902X_TPI_AUDIO_FREQ_44KHZ }, { .freq = 48000, .val = SII902X_TPI_AUDIO_FREQ_48KHZ }, { .freq = 88000, .val = SII902X_TPI_AUDIO_FREQ_88KHZ }, { .freq = 96000, .val = SII902X_TPI_AUDIO_FREQ_96KHZ }, { .freq = 176000, .val = SII902X_TPI_AUDIO_FREQ_176KHZ }, { .freq = 192000, .val = SII902X_TPI_AUDIO_FREQ_192KHZ }, }; static int sii902x_audio_hw_params(struct device *dev, void *data, struct hdmi_codec_daifmt *daifmt, struct hdmi_codec_params *params) { struct sii902x *sii902x = dev_get_drvdata(dev); u8 i2s_config_reg = SII902X_TPI_I2S_SD_DIRECTION_MSB_FIRST; u8 config_byte2_reg = (SII902X_TPI_AUDIO_INTERFACE_I2S | SII902X_TPI_AUDIO_MUTE_ENABLE | SII902X_TPI_AUDIO_CODING_PCM); u8 config_byte3_reg = 0; u8 infoframe_buf[HDMI_INFOFRAME_SIZE(AUDIO)]; unsigned long mclk_rate; int i, ret; if (daifmt->bit_clk_master || daifmt->frame_clk_master) { dev_dbg(dev, "%s: I2S master mode not supported\n", __func__); return -EINVAL; } switch (daifmt->fmt) { case HDMI_I2S: i2s_config_reg |= SII902X_TPI_I2S_FIRST_BIT_SHIFT_YES | SII902X_TPI_I2S_SD_JUSTIFY_LEFT; break; case HDMI_RIGHT_J: i2s_config_reg |= SII902X_TPI_I2S_SD_JUSTIFY_RIGHT; break; case HDMI_LEFT_J: i2s_config_reg |= SII902X_TPI_I2S_SD_JUSTIFY_LEFT; break; default: dev_dbg(dev, "%s: Unsupported i2s format %u\n", __func__, daifmt->fmt); return -EINVAL; } if (daifmt->bit_clk_inv) i2s_config_reg |= SII902X_TPI_I2S_SCK_EDGE_FALLING; else i2s_config_reg |= SII902X_TPI_I2S_SCK_EDGE_RISING; if (daifmt->frame_clk_inv) i2s_config_reg |= SII902X_TPI_I2S_WS_POLARITY_LOW; else i2s_config_reg |= SII902X_TPI_I2S_WS_POLARITY_HIGH; if (params->channels > 2) config_byte2_reg |= SII902X_TPI_AUDIO_LAYOUT_8_CHANNELS; else config_byte2_reg |= SII902X_TPI_AUDIO_LAYOUT_2_CHANNELS; switch (params->sample_width) { case 16: config_byte3_reg |= SII902X_TPI_AUDIO_SAMPLE_SIZE_16; break; case 20: config_byte3_reg |= SII902X_TPI_AUDIO_SAMPLE_SIZE_20; break; case 24: case 32: config_byte3_reg |= SII902X_TPI_AUDIO_SAMPLE_SIZE_24; break; default: dev_err(dev, "%s: Unsupported sample width %u\n", __func__, params->sample_width); return -EINVAL; } for (i = 0; i < ARRAY_SIZE(sii902x_sample_freq); i++) { if (params->sample_rate == sii902x_sample_freq[i].freq) { config_byte3_reg |= sii902x_sample_freq[i].val; break; } } ret = clk_prepare_enable(sii902x->audio.mclk); if (ret) { dev_err(dev, "Enabling mclk failed: %d\n", ret); return ret; } if (sii902x->audio.mclk) { mclk_rate = clk_get_rate(sii902x->audio.mclk); ret = sii902x_select_mclk_div(&i2s_config_reg, params->sample_rate, mclk_rate); if (mclk_rate != ret * params->sample_rate) dev_dbg(dev, "Inaccurate reference clock (%ld/%d != %u)\n", mclk_rate, ret, params->sample_rate); } mutex_lock(&sii902x->mutex); ret = regmap_write(sii902x->regmap, SII902X_TPI_AUDIO_CONFIG_BYTE2_REG, config_byte2_reg); if (ret < 0) goto out; ret = regmap_write(sii902x->regmap, SII902X_TPI_I2S_INPUT_CONFIG_REG, i2s_config_reg); if (ret) goto out; for (i = 0; i < ARRAY_SIZE(sii902x->audio.i2s_fifo_sequence) && sii902x->audio.i2s_fifo_sequence[i]; i++) regmap_write(sii902x->regmap, SII902X_TPI_I2S_ENABLE_MAPPING_REG, sii902x->audio.i2s_fifo_sequence[i]); ret = regmap_write(sii902x->regmap, SII902X_TPI_AUDIO_CONFIG_BYTE3_REG, config_byte3_reg); if (ret) goto out; ret = regmap_bulk_write(sii902x->regmap, SII902X_TPI_I2S_STRM_HDR_BASE, params->iec.status, min((size_t) SII902X_TPI_I2S_STRM_HDR_SIZE, sizeof(params->iec.status))); if (ret) goto out; ret = hdmi_audio_infoframe_pack(¶ms->cea, infoframe_buf, sizeof(infoframe_buf)); if (ret < 0) { dev_err(dev, "%s: Failed to pack audio infoframe: %d\n", __func__, ret); goto out; } ret = regmap_bulk_write(sii902x->regmap, SII902X_TPI_MISC_INFOFRAME_BASE, infoframe_buf, min(ret, SII902X_TPI_MISC_INFOFRAME_SIZE)); if (ret) goto out; /* Decode Level 0 Packets */ ret = regmap_write(sii902x->regmap, SII902X_IND_SET_PAGE, 0x02); if (ret) goto out; ret = regmap_write(sii902x->regmap, SII902X_IND_OFFSET, 0x24); if (ret) goto out; ret = regmap_write(sii902x->regmap, SII902X_IND_VALUE, 0x02); if (ret) goto out; dev_dbg(dev, "%s: hdmi audio enabled\n", __func__); out: mutex_unlock(&sii902x->mutex); if (ret) { clk_disable_unprepare(sii902x->audio.mclk); dev_err(dev, "%s: hdmi audio enable failed: %d\n", __func__, ret); } return ret; } static void sii902x_audio_shutdown(struct device *dev, void *data) { struct sii902x *sii902x = dev_get_drvdata(dev); mutex_lock(&sii902x->mutex); regmap_write(sii902x->regmap, SII902X_TPI_AUDIO_CONFIG_BYTE2_REG, SII902X_TPI_AUDIO_INTERFACE_DISABLE); mutex_unlock(&sii902x->mutex); clk_disable_unprepare(sii902x->audio.mclk); } static int sii902x_audio_digital_mute(struct device *dev, void *data, bool enable) { struct sii902x *sii902x = dev_get_drvdata(dev); mutex_lock(&sii902x->mutex); sii902x_mute(sii902x, enable); mutex_unlock(&sii902x->mutex); return 0; } static int sii902x_audio_get_eld(struct device *dev, void *data, uint8_t *buf, size_t len) { struct sii902x *sii902x = dev_get_drvdata(dev); mutex_lock(&sii902x->mutex); memcpy(buf, sii902x->connector.eld, min(sizeof(sii902x->connector.eld), len)); mutex_unlock(&sii902x->mutex); return 0; } static int sii902x_audio_get_dai_id(struct snd_soc_component *component, struct device_node *endpoint) { struct of_endpoint of_ep; int ret; ret = of_graph_parse_endpoint(endpoint, &of_ep); if (ret < 0) return ret; /* * HDMI sound should be located at reg = <3> * Return expected DAI index 0. */ if (of_ep.port == SII902X_AUDIO_PORT_INDEX) return 0; return -EINVAL; } static const struct hdmi_codec_ops sii902x_audio_codec_ops = { .hw_params = sii902x_audio_hw_params, .audio_shutdown = sii902x_audio_shutdown, .digital_mute = sii902x_audio_digital_mute, .get_eld = sii902x_audio_get_eld, .get_dai_id = sii902x_audio_get_dai_id, }; static int sii902x_audio_codec_init(struct sii902x *sii902x, struct device *dev) { static const u8 audio_fifo_id[] = { SII902X_TPI_I2S_CONFIG_FIFO0, SII902X_TPI_I2S_CONFIG_FIFO1, SII902X_TPI_I2S_CONFIG_FIFO2, SII902X_TPI_I2S_CONFIG_FIFO3, }; static const u8 i2s_lane_id[] = { SII902X_TPI_I2S_SELECT_SD0, SII902X_TPI_I2S_SELECT_SD1, SII902X_TPI_I2S_SELECT_SD2, SII902X_TPI_I2S_SELECT_SD3, }; struct hdmi_codec_pdata codec_data = { .ops = &sii902x_audio_codec_ops, .i2s = 1, /* Only i2s support for now. */ .spdif = 0, .max_i2s_channels = 0, }; u8 lanes[4]; int num_lanes, i; if (!of_property_read_bool(dev->of_node, "#sound-dai-cells")) { dev_dbg(dev, "%s: No \"#sound-dai-cells\", no audio\n", __func__); return 0; } num_lanes = of_property_read_variable_u8_array(dev->of_node, "sil,i2s-data-lanes", lanes, 1, ARRAY_SIZE(lanes)); if (num_lanes == -EINVAL) { dev_dbg(dev, "%s: No \"sil,i2s-data-lanes\", use default <0>\n", __func__); num_lanes = 1; lanes[0] = 0; } else if (num_lanes < 0) { dev_err(dev, "%s: Error gettin \"sil,i2s-data-lanes\": %d\n", __func__, num_lanes); return num_lanes; } codec_data.max_i2s_channels = 2 * num_lanes; for (i = 0; i < num_lanes; i++) sii902x->audio.i2s_fifo_sequence[i] |= audio_fifo_id[i] | i2s_lane_id[lanes[i]] | SII902X_TPI_I2S_FIFO_ENABLE; sii902x->audio.mclk = devm_clk_get_optional(dev, "mclk"); if (IS_ERR(sii902x->audio.mclk)) { dev_err(dev, "%s: No clock (audio mclk) found: %ld\n", __func__, PTR_ERR(sii902x->audio.mclk)); return PTR_ERR(sii902x->audio.mclk); } sii902x->audio.pdev = platform_device_register_data( dev, HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_AUTO, &codec_data, sizeof(codec_data)); return PTR_ERR_OR_ZERO(sii902x->audio.pdev); } static const struct regmap_range sii902x_volatile_ranges[] = { { .range_min = 0, .range_max = 0xff }, }; static const struct regmap_access_table sii902x_volatile_table = { .yes_ranges = sii902x_volatile_ranges, .n_yes_ranges = ARRAY_SIZE(sii902x_volatile_ranges), }; static const struct regmap_config sii902x_regmap_config = { .reg_bits = 8, .val_bits = 8, .disable_locking = true, /* struct sii902x mutex should be enough */ .max_register = SII902X_TPI_MISC_INFOFRAME_END, .volatile_table = &sii902x_volatile_table, .cache_type = REGCACHE_NONE, }; static irqreturn_t sii902x_interrupt(int irq, void *data) { struct sii902x *sii902x = data; unsigned int status = 0; mutex_lock(&sii902x->mutex); regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status); regmap_write(sii902x->regmap, SII902X_INT_STATUS, status); mutex_unlock(&sii902x->mutex); if ((status & SII902X_HOTPLUG_EVENT) && sii902x->bridge.dev) drm_helper_hpd_irq_event(sii902x->bridge.dev); return IRQ_HANDLED; } /* * The purpose of sii902x_i2c_bypass_select is to enable the pass through * mode of the HDMI transmitter. Do not use regmap from within this function, * only use sii902x_*_unlocked functions to read/modify/write registers. * We are holding the parent adapter lock here, keep this in mind before * adding more i2c transactions. * * Also, since SII902X_SYS_CTRL_DATA is used with regmap_update_bits elsewhere * in this driver, we need to make sure that we only touch 0x1A[2:1] from * within sii902x_i2c_bypass_select and sii902x_i2c_bypass_deselect, and that * we leave the remaining bits as we have found them. */ static int sii902x_i2c_bypass_select(struct i2c_mux_core *mux, u32 chan_id) { struct sii902x *sii902x = i2c_mux_priv(mux); struct device *dev = &sii902x->i2c->dev; unsigned long timeout; u8 status; int ret; ret = sii902x_update_bits_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, SII902X_SYS_CTRL_DDC_BUS_REQ, SII902X_SYS_CTRL_DDC_BUS_REQ); if (ret) return ret; timeout = jiffies + msecs_to_jiffies(SII902X_I2C_BUS_ACQUISITION_TIMEOUT_MS); do { ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, &status); if (ret) return ret; } while (!(status & SII902X_SYS_CTRL_DDC_BUS_GRTD) && time_before(jiffies, timeout)); if (!(status & SII902X_SYS_CTRL_DDC_BUS_GRTD)) { dev_err(dev, "Failed to acquire the i2c bus\n"); return -ETIMEDOUT; } return sii902x_write_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, status); } /* * The purpose of sii902x_i2c_bypass_deselect is to disable the pass through * mode of the HDMI transmitter. Do not use regmap from within this function, * only use sii902x_*_unlocked functions to read/modify/write registers. * We are holding the parent adapter lock here, keep this in mind before * adding more i2c transactions. * * Also, since SII902X_SYS_CTRL_DATA is used with regmap_update_bits elsewhere * in this driver, we need to make sure that we only touch 0x1A[2:1] from * within sii902x_i2c_bypass_select and sii902x_i2c_bypass_deselect, and that * we leave the remaining bits as we have found them. */ static int sii902x_i2c_bypass_deselect(struct i2c_mux_core *mux, u32 chan_id) { struct sii902x *sii902x = i2c_mux_priv(mux); struct device *dev = &sii902x->i2c->dev; unsigned long timeout; unsigned int retries; u8 status; int ret; /* * When the HDMI transmitter is in pass through mode, we need an * (undocumented) additional delay between STOP and START conditions * to guarantee the bus won't get stuck. */ udelay(30); /* * Sometimes the I2C bus can stall after failure to use the * EDID channel. Retry a few times to see if things clear * up, else continue anyway. */ retries = 5; do { ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, &status); retries--; } while (ret && retries); if (ret) { dev_err(dev, "failed to read status (%d)\n", ret); return ret; } ret = sii902x_update_bits_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, SII902X_SYS_CTRL_DDC_BUS_REQ | SII902X_SYS_CTRL_DDC_BUS_GRTD, 0); if (ret) return ret; timeout = jiffies + msecs_to_jiffies(SII902X_I2C_BUS_ACQUISITION_TIMEOUT_MS); do { ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, &status); if (ret) return ret; } while (status & (SII902X_SYS_CTRL_DDC_BUS_REQ | SII902X_SYS_CTRL_DDC_BUS_GRTD) && time_before(jiffies, timeout)); if (status & (SII902X_SYS_CTRL_DDC_BUS_REQ | SII902X_SYS_CTRL_DDC_BUS_GRTD)) { dev_err(dev, "failed to release the i2c bus\n"); return -ETIMEDOUT; } return 0; } static const struct drm_bridge_timings default_sii902x_timings = { .input_bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE | DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE | DRM_BUS_FLAG_DE_HIGH, }; static int sii902x_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device *dev = &client->dev; unsigned int status = 0; struct sii902x *sii902x; u8 chipid[4]; int ret; ret = i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA); if (!ret) { dev_err(dev, "I2C adapter not suitable\n"); return -EIO; } sii902x = devm_kzalloc(dev, sizeof(*sii902x), GFP_KERNEL); if (!sii902x) return -ENOMEM; sii902x->i2c = client; sii902x->regmap = devm_regmap_init_i2c(client, &sii902x_regmap_config); if (IS_ERR(sii902x->regmap)) return PTR_ERR(sii902x->regmap); sii902x->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(sii902x->reset_gpio)) { dev_err(dev, "Failed to retrieve/request reset gpio: %ld\n", PTR_ERR(sii902x->reset_gpio)); return PTR_ERR(sii902x->reset_gpio); } mutex_init(&sii902x->mutex); sii902x_reset(sii902x); ret = regmap_write(sii902x->regmap, SII902X_REG_TPI_RQB, 0x0); if (ret) return ret; ret = regmap_bulk_read(sii902x->regmap, SII902X_REG_CHIPID(0), &chipid, 4); if (ret) { dev_err(dev, "regmap_read failed %d\n", ret); return ret; } if (chipid[0] != 0xb0) { dev_err(dev, "Invalid chipid: %02x (expecting 0xb0)\n", chipid[0]); return -EINVAL; } /* Clear all pending interrupts */ regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status); regmap_write(sii902x->regmap, SII902X_INT_STATUS, status); if (client->irq > 0) { regmap_write(sii902x->regmap, SII902X_INT_ENABLE, SII902X_HOTPLUG_EVENT); ret = devm_request_threaded_irq(dev, client->irq, NULL, sii902x_interrupt, IRQF_ONESHOT, dev_name(dev), sii902x); if (ret) return ret; } sii902x->bridge.funcs = &sii902x_bridge_funcs; sii902x->bridge.of_node = dev->of_node; sii902x->bridge.timings = &default_sii902x_timings; drm_bridge_add(&sii902x->bridge); sii902x_audio_codec_init(sii902x, dev); i2c_set_clientdata(client, sii902x); sii902x->i2cmux = i2c_mux_alloc(client->adapter, dev, 1, 0, I2C_MUX_GATE, sii902x_i2c_bypass_select, sii902x_i2c_bypass_deselect); if (!sii902x->i2cmux) return -ENOMEM; sii902x->i2cmux->priv = sii902x; return i2c_mux_add_adapter(sii902x->i2cmux, 0, 0, 0); } static int sii902x_remove(struct i2c_client *client) { struct sii902x *sii902x = i2c_get_clientdata(client); i2c_mux_del_adapters(sii902x->i2cmux); drm_bridge_remove(&sii902x->bridge); return 0; } static const struct of_device_id sii902x_dt_ids[] = { { .compatible = "sil,sii9022", }, { } }; MODULE_DEVICE_TABLE(of, sii902x_dt_ids); static const struct i2c_device_id sii902x_i2c_ids[] = { { "sii9022", 0 }, { }, }; MODULE_DEVICE_TABLE(i2c, sii902x_i2c_ids); static struct i2c_driver sii902x_driver = { .probe = sii902x_probe, .remove = sii902x_remove, .driver = { .name = "sii902x", .of_match_table = sii902x_dt_ids, }, .id_table = sii902x_i2c_ids, }; module_i2c_driver(sii902x_driver); MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com>"); MODULE_DESCRIPTION("SII902x RGB -> HDMI bridges"); MODULE_LICENSE("GPL");
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