summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/bridge/sii902x.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/bridge/sii902x.c')
-rw-r--r--drivers/gpu/drm/bridge/sii902x.c44
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(