Using the common hdmi-codec driver to support hdmi audio function. Signed-off-by: Yakir Yang <ykk@xxxxxxxxxxxxxx> --- drivers/gpu/drm/rockchip/inno_hdmi.c | 237 ++++++++++++++++++++++++++++++++++- drivers/gpu/drm/rockchip/inno_hdmi.h | 2 + 2 files changed, 237 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c index f8b4feb..c31dc07 100644 --- a/drivers/gpu/drm/rockchip/inno_hdmi.c +++ b/drivers/gpu/drm/rockchip/inno_hdmi.c @@ -29,6 +29,8 @@ #include <drm/drm_crtc_helper.h> #include <drm/drm_edid.h> +#include <sound/hdmi-codec.h> + #include "rockchip_drm_drv.h" #include "rockchip_drm_vop.h" @@ -36,6 +38,12 @@ #define to_inno_hdmi(x) container_of(x, struct inno_hdmi, x) +struct audio_info { + int sample_rate; + int channels; + int sample_width; +}; + struct hdmi_data_info { int vic; bool sink_is_hdmi; @@ -71,6 +79,9 @@ struct inno_hdmi { unsigned int tmds_rate; + struct platform_device *audio_pdev; + bool audio_enable; + struct hdmi_data_info hdmi_data; struct drm_display_mode previous_mode; }; @@ -306,6 +317,57 @@ static int inno_hdmi_config_video_avi(struct inno_hdmi *hdmi, return inno_hdmi_upload_frame(hdmi, rc, &frame, INFOFRAME_AVI, 0, 0, 0); } +static int inno_hdmi_config_audio_aai(struct inno_hdmi *hdmi, + struct audio_info *audio) +{ + struct hdmi_audio_infoframe *faudio; + union hdmi_infoframe frame; + int rc; + + rc = hdmi_audio_infoframe_init(&frame.audio); + faudio = (struct hdmi_audio_infoframe *)&frame; + + faudio->channels = audio->channels; + + switch (audio->sample_width) { + case 16: + faudio->sample_size = HDMI_AUDIO_SAMPLE_SIZE_16; + break; + case 20: + faudio->sample_size = HDMI_AUDIO_SAMPLE_SIZE_20; + break; + case 24: + faudio->sample_size = HDMI_AUDIO_SAMPLE_SIZE_24; + break; + } + + switch (audio->sample_rate) { + case 32000: + faudio->sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_32000; + break; + case 44100: + faudio->sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_44100; + break; + case 48000: + faudio->sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_48000; + break; + case 88200: + faudio->sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_88200; + break; + case 96000: + faudio->sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_96000; + break; + case 176400: + faudio->sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_176400; + break; + case 192000: + faudio->sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_192000; + break; + } + + return inno_hdmi_upload_frame(hdmi, rc, &frame, INFOFRAME_AAI, 0, 0, 0); +} + static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi) { struct hdmi_data_info *data = &hdmi->hdmi_data; @@ -478,8 +540,9 @@ static int inno_hdmi_setup(struct inno_hdmi *hdmi, inno_hdmi_i2c_init(hdmi); /* Unmute video and audio output */ - hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE | m_VIDEO_BLACK, - v_AUDIO_MUTE(0) | v_VIDEO_MUTE(0)); + hdmi_modb(hdmi, HDMI_AV_MUTE, m_VIDEO_BLACK, v_VIDEO_MUTE(0)); + if (hdmi->audio_enable) + hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE, v_AUDIO_MUTE(0)); return 0; } @@ -616,6 +679,174 @@ static struct drm_connector_helper_funcs inno_hdmi_connector_helper_funcs = { .best_encoder = inno_hdmi_connector_best_encoder, }; +int inno_hdmi_audio_config_set(struct inno_hdmi *hdmi, struct audio_info *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 bitstream*/ + hdmi_writeb(hdmi, HDMI_AUDIO_CHANNEL_STATUS, v_AUDIO_STATUS_NLPCM(0)); + + return inno_hdmi_config_audio_aai(hdmi, audio); +} + +static int inno_hdmi_audio_hw_params(struct device *dev, + struct hdmi_codec_daifmt *daifmt, + struct hdmi_codec_params *params) +{ + struct inno_hdmi *hdmi = dev_get_drvdata(dev); + struct audio_info audio = { + .sample_width = params->sample_width, + .sample_rate = params->sample_rate, + .channels = params->channels, + }; + + if (!hdmi->hdmi_data.sink_has_audio) { + dev_err(hdmi->dev, "Sink do not support audio!\n"); + return -ENODEV; + } + + if (!hdmi->encoder.crtc) + return -ENODEV; + + switch (daifmt->fmt) { + case HDMI_I2S: + break; + default: + dev_err(dev, "%s: Invalid format %d\n", __func__, daifmt->fmt); + return -EINVAL; + } + + return inno_hdmi_audio_config_set(hdmi, &audio); +} + +static void inno_hdmi_audio_shutdown(struct device *dev) +{ + /* do nothing */ +} + +static int inno_hdmi_audio_digital_mute(struct device *dev, bool mute) +{ + struct inno_hdmi *hdmi = dev_get_drvdata(dev); + + if (!hdmi->hdmi_data.sink_has_audio) { + dev_err(hdmi->dev, "Sink do not support audio!\n"); + return -ENODEV; + } + + hdmi->audio_enable = !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, uint8_t *buf, size_t len) +{ + struct inno_hdmi *hdmi = dev_get_drvdata(dev); + struct drm_mode_config *config = &hdmi->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 == 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, + .digital_mute = inno_hdmi_audio_digital_mute, + .get_eld = inno_hdmi_audio_get_eld, +}; + +static int inno_hdmi_audio_codec_init(struct inno_hdmi *hdmi, + struct device *dev) +{ + struct hdmi_codec_pdata codec_data = { + .i2s = 1, + .ops = &audio_codec_ops, + .max_i2s_channels = 8, + }; + + hdmi->audio_enable = false; + hdmi->audio_pdev = platform_device_register_data( + 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_register(struct drm_device *drm, struct inno_hdmi *hdmi) { struct drm_encoder *encoder = &hdmi->encoder; @@ -645,6 +876,8 @@ static int inno_hdmi_register(struct drm_device *drm, struct inno_hdmi *hdmi) drm_mode_connector_attach_encoder(&hdmi->connector, encoder); + inno_hdmi_audio_codec_init(hdmi, dev); + return 0; } diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.h b/drivers/gpu/drm/rockchip/inno_hdmi.h index aa7c415..8b23037 100644 --- a/drivers/gpu/drm/rockchip/inno_hdmi.h +++ b/drivers/gpu/drm/rockchip/inno_hdmi.h @@ -104,11 +104,13 @@ 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_MUTE(n) (n << 1) +#define v_AUDIO_PD(n) (n << 2) #define v_VIDEO_MUTE(n) (n << 0) #define HDMI_VIDEO_TIMING_CTL 0x08 -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html