Add sound support to the INNO HDMI driver. The HDMI TX audio source is connected to I2S. Using the common hdmi-codec driver to support hdmi audio function.
Signed-off-by: Yakir Yang <[email protected]> Signed-off-by: Johan Jonker <[email protected]> --- NOT TESTED WITH HARDWARE Changed V2: rebased hook to encoder->funcs->late_register return -EPROBE_DEFER as early as possible rename and update inno_hdmi_disable_frame() function avi and aai frames can not be disabled (See TRM) restyle --- drivers/gpu/drm/rockchip/inno_hdmi.c | 295 ++++++++++++++++++++++++--- drivers/gpu/drm/rockchip/inno_hdmi.h | 2 + 2 files changed, 263 insertions(+), 34 deletions(-) diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c index 3df2cfcf9998..9c28080a0e27 100644 --- a/drivers/gpu/drm/rockchip/inno_hdmi.c +++ b/drivers/gpu/drm/rockchip/inno_hdmi.c @@ -22,12 +22,20 @@ #include <drm/drm_probe_helper.h> #include <drm/drm_simple_kms_helper.h> +#include <sound/hdmi-codec.h> + #include "rockchip_drm_drv.h" #include "inno_hdmi.h" #define INNO_HDMI_MIN_TMDS_CLOCK 25000000U +struct inno_hdmi_audio_info { + int channels; + int sample_rate; + int sample_width; +}; + struct inno_hdmi_phy_config { unsigned long pixelclock; u8 pre_emphasis; @@ -62,6 +70,10 @@ struct inno_hdmi { struct inno_hdmi_i2c *i2c; struct i2c_adapter *ddc; + struct platform_device *audio_pdev; + struct inno_hdmi_audio_info audio; + bool audio_enabled; + const struct inno_hdmi_variant *variant; }; @@ -257,34 +269,35 @@ static void inno_hdmi_reset(struct inno_hdmi *hdmi) inno_hdmi_standby(hdmi); } -static void inno_hdmi_disable_frame(struct inno_hdmi *hdmi, - enum hdmi_infoframe_type type) +static void inno_hdmi_set_frame_index(struct inno_hdmi *hdmi, + enum hdmi_infoframe_type type) { struct drm_connector *connector = &hdmi->connector; - - if (type != HDMI_INFOFRAME_TYPE_AVI) { + u32 frame_index; + + switch (type) { + case HDMI_INFOFRAME_TYPE_AVI: + frame_index = INFOFRAME_AVI; + break; + case HDMI_INFOFRAME_TYPE_AUDIO: + frame_index = INFOFRAME_AAI; + break; + default: drm_err(connector->dev, "Unsupported infoframe type: %u\n", type); return; } - hdmi_writeb(hdmi, HDMI_CONTROL_PACKET_BUF_INDEX, INFOFRAME_AVI); + hdmi_writeb(hdmi, HDMI_CONTROL_PACKET_BUF_INDEX, frame_index); } static int inno_hdmi_upload_frame(struct inno_hdmi *hdmi, union hdmi_infoframe *frame, enum hdmi_infoframe_type type) { - struct drm_connector *connector = &hdmi->connector; u8 packed_frame[HDMI_MAXIMUM_INFO_FRAME_SIZE]; ssize_t rc, i; - if (type != HDMI_INFOFRAME_TYPE_AVI) { - drm_err(connector->dev, - "Unsupported infoframe type: %u\n", type); - return 0; - } - - inno_hdmi_disable_frame(hdmi, type); + inno_hdmi_set_frame_index(hdmi, type); rc = hdmi_infoframe_pack(frame, packed_frame, sizeof(packed_frame)); @@ -312,7 +325,6 @@ static int inno_hdmi_config_video_avi(struct inno_hdmi *hdmi, &hdmi->connector, mode); if (rc) { - inno_hdmi_disable_frame(hdmi, HDMI_INFOFRAME_TYPE_AVI); return rc; } @@ -338,6 +350,197 @@ static int inno_hdmi_config_video_avi(struct inno_hdmi *hdmi, return inno_hdmi_upload_frame(hdmi, &frame, HDMI_INFOFRAME_TYPE_AVI); } +static int inno_hdmi_config_aai(struct inno_hdmi *hdmi) +{ + union hdmi_infoframe frame; + int rc; + + rc = hdmi_audio_infoframe_init(&frame.audio); + if (rc < 0) + return rc; + + frame.audio.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM; + frame.audio.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM; + frame.audio.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM; + frame.audio.channels = hdmi->audio.channels; + + return inno_hdmi_upload_frame(hdmi, &frame, HDMI_INFOFRAME_TYPE_AUDIO); +} + +static int inno_hdmi_audio_config(struct inno_hdmi *hdmi) +{ + struct inno_hdmi_audio_info *audio = &hdmi->audio; + int rate, N, channel; + + if (audio->channels < 3) + channel = I2S_CHANNEL_1_2; + else if (audio->channels < 5) + channel = I2S_CHANNEL_3_4; + else if (audio->channels < 7) + channel = I2S_CHANNEL_5_6; + else + channel = I2S_CHANNEL_7_8; + + switch (audio->sample_rate) { + case 32000: + rate = AUDIO_32K; + N = N_32K; + break; + case 44100: + rate = AUDIO_441K; + N = N_441K; + break; + case 48000: + rate = AUDIO_48K; + N = N_48K; + break; + case 88200: + rate = AUDIO_882K; + N = N_882K; + break; + case 96000: + rate = AUDIO_96K; + N = N_96K; + break; + case 176400: + rate = AUDIO_1764K; + N = N_1764K; + break; + case 192000: + rate = AUDIO_192K; + N = N_192K; + break; + default: + dev_err(hdmi->dev, "[%s] not support such sample rate %d\n", + __func__, audio->sample_rate); + return -ENOENT; + } + + /* Set audio source I2S. */ + hdmi_writeb(hdmi, HDMI_AUDIO_CTRL1, 0x01); + hdmi_writeb(hdmi, AUDIO_SAMPLE_RATE, rate); + hdmi_writeb(hdmi, AUDIO_I2S_MODE, v_I2S_MODE(I2S_STANDARD) | + v_I2S_CHANNEL(channel)); + + hdmi_writeb(hdmi, AUDIO_I2S_MAP, 0x00); + hdmi_writeb(hdmi, AUDIO_I2S_SWAPS_SPDIF, 0); + + /* Set N value. */ + hdmi_writeb(hdmi, AUDIO_N_H, (N >> 16) & 0x0F); + hdmi_writeb(hdmi, AUDIO_N_M, (N >> 8) & 0xFF); + hdmi_writeb(hdmi, AUDIO_N_L, N & 0xFF); + + /*Set HDMI NLPCM mode to support HDMI bit stream. */ + hdmi_writeb(hdmi, HDMI_AUDIO_CHANNEL_STATUS, v_AUDIO_STATUS_NLPCM(0)); + + return inno_hdmi_config_aai(hdmi); +} + +static int inno_hdmi_audio_hw_params(struct device *dev, void *d, + struct hdmi_codec_daifmt *daifmt, + struct hdmi_codec_params *params) +{ + struct inno_hdmi *hdmi = dev_get_drvdata(dev); + struct drm_display_info *display = &hdmi->connector.display_info; + + if (!display->has_audio) { + DRM_DEV_ERROR(hdmi->dev, "no audio support\n"); + return -ENODEV; + } + + if (!hdmi->encoder.encoder.crtc) + return -ENODEV; + + switch (daifmt->fmt) { + case HDMI_I2S: + break; + default: + DRM_DEV_ERROR(dev, "invalid format %d\n", daifmt->fmt); + return -EINVAL; + } + + hdmi->audio.channels = params->channels; + hdmi->audio.sample_rate = params->sample_rate; + hdmi->audio.sample_width = params->sample_width; + + return inno_hdmi_audio_config(hdmi); +} + +static void inno_hdmi_audio_shutdown(struct device *dev, void *d) +{ + /* Do nothing. */ +} + +static int inno_hdmi_audio_mute_stream(struct device *dev, void *d, bool mute, int direction) +{ + struct inno_hdmi *hdmi = dev_get_drvdata(dev); + struct drm_display_info *display = &hdmi->connector.display_info; + + if (!display->has_audio) { + DRM_DEV_ERROR(hdmi->dev, "no audio support\n"); + return -ENODEV; + } + + hdmi->audio_enabled = !mute; + + if (mute) + hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE | m_AUDIO_PD, + v_AUDIO_MUTE(1) | v_AUDIO_PD(1)); + else + hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE | m_AUDIO_PD, + v_AUDIO_MUTE(0) | v_AUDIO_PD(0)); + + return 0; +} + +static int inno_hdmi_audio_get_eld(struct device *dev, void *d, uint8_t *buf, size_t len) +{ + struct inno_hdmi *hdmi = dev_get_drvdata(dev); + struct drm_mode_config *config = &hdmi->encoder.encoder.dev->mode_config; + struct drm_connector *connector; + int ret = -ENODEV; + + mutex_lock(&config->mutex); + list_for_each_entry(connector, &config->connector_list, head) { + if (&hdmi->encoder.encoder == connector->encoder) { + memcpy(buf, connector->eld, + min(sizeof(connector->eld), len)); + ret = 0; + } + } + mutex_unlock(&config->mutex); + + return ret; +} + +static const struct hdmi_codec_ops audio_codec_ops = { + .hw_params = inno_hdmi_audio_hw_params, + .audio_shutdown = inno_hdmi_audio_shutdown, + .mute_stream = inno_hdmi_audio_mute_stream, + .get_eld = inno_hdmi_audio_get_eld, +}; + +static int inno_hdmi_audio_codec_init(struct inno_hdmi *hdmi) +{ + struct hdmi_codec_pdata codec_data = { + .i2s = 1, + .ops = &audio_codec_ops, + .max_i2s_channels = 8, + }; + + hdmi->audio.channels = 2; + hdmi->audio.sample_rate = 48000; + hdmi->audio.sample_width = 16; + hdmi->audio_enabled = false; + hdmi->audio_pdev = platform_device_register_data(hdmi->dev, + HDMI_CODEC_DRV_NAME, + PLATFORM_DEVID_NONE, + &codec_data, + sizeof(codec_data)); + + return PTR_ERR_OR_ZERO(hdmi->audio_pdev); +} + static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi) { struct drm_connector *connector = &hdmi->connector; @@ -479,8 +682,10 @@ static int inno_hdmi_setup(struct inno_hdmi *hdmi, inno_hdmi_config_video_csc(hdmi); - if (display->is_hdmi) + if (display->is_hdmi) { inno_hdmi_config_video_avi(hdmi, mode); + inno_hdmi_audio_config(hdmi); + } /* * When IP controller have configured to an accurate video @@ -588,6 +793,26 @@ inno_hdmi_encoder_atomic_check(struct drm_encoder *encoder, &crtc_state->adjusted_mode) == MODE_OK ? 0 : -EINVAL; } +static int inno_hdmi_encoder_late_register(struct drm_encoder *encoder) +{ + struct inno_hdmi *hdmi = encoder_to_inno_hdmi(encoder); + + return inno_hdmi_audio_codec_init(hdmi); +} + +static void inno_hdmi_encoder_early_unregister(struct drm_encoder *encoder) +{ + struct inno_hdmi *hdmi = encoder_to_inno_hdmi(encoder); + + platform_device_unregister(hdmi->audio_pdev); +} + +static const struct drm_encoder_funcs inno_hdmi_encoder_funcs = { + .destroy = drm_encoder_cleanup, + .late_register = inno_hdmi_encoder_late_register, + .early_unregister = inno_hdmi_encoder_early_unregister, +}; + static struct drm_encoder_helper_funcs inno_hdmi_encoder_helper_funcs = { .atomic_check = inno_hdmi_encoder_atomic_check, .atomic_enable = inno_hdmi_encoder_enable, @@ -687,37 +912,26 @@ inno_hdmi_connector_duplicate_state(struct drm_connector *connector) } static const struct drm_connector_funcs inno_hdmi_connector_funcs = { - .fill_modes = drm_helper_probe_single_connector_modes, - .detect = inno_hdmi_connector_detect, - .destroy = inno_hdmi_connector_destroy, - .reset = inno_hdmi_connector_reset, + .fill_modes = drm_helper_probe_single_connector_modes, + .detect = inno_hdmi_connector_detect, + .destroy = inno_hdmi_connector_destroy, + .reset = inno_hdmi_connector_reset, .atomic_duplicate_state = inno_hdmi_connector_duplicate_state, - .atomic_destroy_state = inno_hdmi_connector_destroy_state, + .atomic_destroy_state = inno_hdmi_connector_destroy_state, }; static struct drm_connector_helper_funcs inno_hdmi_connector_helper_funcs = { - .get_modes = inno_hdmi_connector_get_modes, + .get_modes = inno_hdmi_connector_get_modes, .mode_valid = inno_hdmi_connector_mode_valid, }; static int inno_hdmi_register(struct drm_device *drm, struct inno_hdmi *hdmi) { struct drm_encoder *encoder = &hdmi->encoder.encoder; - struct device *dev = hdmi->dev; - - encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node); - - /* - * If we failed to find the CRTC(s) which this encoder is - * supposed to be connected to, it's because the CRTC has - * not been registered yet. Defer probing, and hope that - * the required CRTC is added later. - */ - if (encoder->possible_crtcs == 0) - return -EPROBE_DEFER; drm_encoder_helper_add(encoder, &inno_hdmi_encoder_helper_funcs); - drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS); + drm_encoder_init(drm, encoder, &inno_hdmi_encoder_funcs, + DRM_MODE_ENCODER_TMDS, NULL); hdmi->connector.polled = DRM_CONNECTOR_POLL_HPD; @@ -911,6 +1125,7 @@ static int inno_hdmi_bind(struct device *dev, struct device *master, { struct platform_device *pdev = to_platform_device(dev); struct drm_device *drm = data; + struct drm_encoder *encoder; struct inno_hdmi *hdmi; const struct inno_hdmi_variant *variant; int irq; @@ -920,6 +1135,18 @@ static int inno_hdmi_bind(struct device *dev, struct device *master, if (!hdmi) return -ENOMEM; + encoder = &hdmi->encoder.encoder; + encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node); + + /* + * If we failed to find the CRTC(s) which this encoder is + * supposed to be connected to, it's because the CRTC has + * not been registered yet. Defer probing, and hope that + * the required CRTC is added later. + */ + if (encoder->possible_crtcs == 0) + return -EPROBE_DEFER; + hdmi->dev = dev; variant = of_device_get_match_data(hdmi->dev); diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.h b/drivers/gpu/drm/rockchip/inno_hdmi.h index a7edf3559e60..0d108d3578fa 100644 --- a/drivers/gpu/drm/rockchip/inno_hdmi.h +++ b/drivers/gpu/drm/rockchip/inno_hdmi.h @@ -91,10 +91,12 @@ enum { #define HDMI_AV_MUTE 0x05 #define m_AVMUTE_CLEAR (1 << 7) #define m_AVMUTE_ENABLE (1 << 6) +#define m_AUDIO_PD (1 << 2) #define m_AUDIO_MUTE (1 << 1) #define m_VIDEO_BLACK (1 << 0) #define v_AVMUTE_CLEAR(n) (n << 7) #define v_AVMUTE_ENABLE(n) (n << 6) +#define v_AUDIO_PD(n) (n << 2) #define v_AUDIO_MUTE(n) (n << 1) #define v_VIDEO_MUTE(n) (n << 0) -- 2.39.2
