diff options
Diffstat (limited to 'drivers/gpu/drm/bridge/sii902x.c')
| -rw-r--r-- | drivers/gpu/drm/bridge/sii902x.c | 44 |
1 files changed, 35 insertions, 9 deletions
diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c index dd7aa466b280..38f75ac580df 100644 --- a/drivers/gpu/drm/bridge/sii902x.c +++ b/drivers/gpu/drm/bridge/sii902x.c @@ -158,6 +158,8 @@ #define SII902X_I2C_BUS_ACQUISITION_TIMEOUT_MS 500 +#define SII902X_AUDIO_PORT_INDEX 3 + struct sii902x { struct i2c_client *i2c; struct regmap *regmap; @@ -568,13 +570,14 @@ static int sii902x_audio_hw_params(struct device *dev, void *data, return ret; } - 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); + 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); @@ -662,7 +665,8 @@ static void sii902x_audio_shutdown(struct device *dev, void *data) clk_disable_unprepare(sii902x->audio.mclk); } -int sii902x_audio_digital_mute(struct device *dev, void *data, bool enable) +static int sii902x_audio_digital_mute(struct device *dev, + void *data, bool enable) { struct sii902x *sii902x = dev_get_drvdata(dev); @@ -690,11 +694,32 @@ static int sii902x_audio_get_eld(struct device *dev, void *data, 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, @@ -750,10 +775,11 @@ static int sii902x_audio_codec_init(struct sii902x *sii902x, 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 0; + return PTR_ERR(sii902x->audio.mclk); } sii902x->audio.pdev = platform_device_register_data( |