#include <linux/module.h>
#include <linux/irq.h>
#include <sound/asoundef.h>
+#include <sound/hdmi-codec.h>
#include <drm/drmP.h>
#include <drm/drm_atomic_helper.h>
#define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)
+struct tda998x_audio_port {
+ u8 format; /* AFMT_xxx */
+ u8 config; /* AP value */
+};
+
struct tda998x_priv {
struct i2c_client *cec;
struct i2c_client *hdmi;
u8 vip_cntrl_2;
struct tda998x_audio_params audio_params;
+ struct platform_device *audio_pdev;
+ struct mutex audio_mutex;
+
wait_queue_head_t wq_edid;
volatile int wq_edid_wait;
struct drm_encoder encoder;
struct drm_connector connector;
+
+ struct tda998x_audio_port audio_port[2];
};
#define conn_to_tda998x_priv(x) \
break;
default:
- BUG();
+ dev_err(&priv->hdmi->dev, "Unsupported I2S format\n");
return -EINVAL;
}
tda998x_write_avi(priv, adjusted_mode);
if (priv->audio_params.format != AFMT_UNUSED) {
+ mutex_lock(&priv->audio_mutex);
tda998x_configure_audio(priv,
&priv->audio_params,
adjusted_mode->clock);
+ mutex_unlock(&priv->audio_mutex);
}
}
}
drm_mode_connector_update_edid_property(connector, edid);
n = drm_add_edid_modes(connector, edid);
priv->is_hdmi_sink = drm_detect_hdmi_monitor(edid);
+ drm_edid_to_eld(connector, edid);
+
kfree(edid);
return n;
cec_write(priv, REG_CEC_RXSHPDINTENA, 0);
reg_clear(priv, REG_INT_FLAGS_2, INT_FLAGS_2_EDID_BLK_RD);
+ if (priv->audio_pdev)
+ platform_device_unregister(priv->audio_pdev);
+
if (priv->hdmi->irq)
free_irq(priv->hdmi->irq, priv);
i2c_unregister_device(priv->cec);
}
+static int tda998x_audio_hw_params(struct device *dev, void *data,
+ struct hdmi_codec_daifmt *daifmt,
+ struct hdmi_codec_params *params)
+{
+ struct tda998x_priv *priv = dev_get_drvdata(dev);
+ int i, ret;
+ struct tda998x_audio_params audio = {
+ .sample_width = params->sample_width,
+ .sample_rate = params->sample_rate,
+ .cea = params->cea,
+ };
+
+ if (!priv->encoder.crtc)
+ return -ENODEV;
+
+ memcpy(audio.status, params->iec.status,
+ min(sizeof(audio.status), sizeof(params->iec.status)));
+
+ switch (daifmt->fmt) {
+ case HDMI_I2S:
+ if (daifmt->bit_clk_inv || daifmt->frame_clk_inv ||
+ daifmt->bit_clk_master || daifmt->frame_clk_master) {
+ dev_err(dev, "%s: Bad flags %d %d %d %d\n", __func__,
+ daifmt->bit_clk_inv, daifmt->frame_clk_inv,
+ daifmt->bit_clk_master,
+ daifmt->frame_clk_master);
+ return -EINVAL;
+ }
+ for (i = 0; i < ARRAY_SIZE(priv->audio_port); i++)
+ if (priv->audio_port[i].format == AFMT_I2S)
+ audio.config = priv->audio_port[i].config;
+ audio.format = AFMT_I2S;
+ break;
+ case HDMI_SPDIF:
+ for (i = 0; i < ARRAY_SIZE(priv->audio_port); i++)
+ if (priv->audio_port[i].format == AFMT_SPDIF)
+ audio.config = priv->audio_port[i].config;
+ audio.format = AFMT_SPDIF;
+ break;
+ default:
+ dev_err(dev, "%s: Invalid format %d\n", __func__, daifmt->fmt);
+ return -EINVAL;
+ }
+
+ if (audio.config == 0) {
+ dev_err(dev, "%s: No audio configutation found\n", __func__);
+ return -EINVAL;
+ }
+
+ mutex_lock(&priv->audio_mutex);
+ ret = tda998x_configure_audio(priv,
+ &audio,
+ priv->encoder.crtc->hwmode.clock);
+
+ if (ret == 0)
+ priv->audio_params = audio;
+ mutex_unlock(&priv->audio_mutex);
+
+ return ret;
+}
+
+static void tda998x_audio_shutdown(struct device *dev, void *data)
+{
+ struct tda998x_priv *priv = dev_get_drvdata(dev);
+
+ mutex_lock(&priv->audio_mutex);
+
+ reg_write(priv, REG_ENA_AP, 0);
+
+ priv->audio_params.format = AFMT_UNUSED;
+
+ mutex_unlock(&priv->audio_mutex);
+}
+
+int tda998x_audio_digital_mute(struct device *dev, void *data, bool enable)
+{
+ struct tda998x_priv *priv = dev_get_drvdata(dev);
+
+ mutex_lock(&priv->audio_mutex);
+
+ tda998x_audio_mute(priv, enable);
+
+ mutex_unlock(&priv->audio_mutex);
+ return 0;
+}
+
+static int tda998x_audio_get_eld(struct device *dev, void *data,
+ uint8_t *buf, size_t len)
+{
+ struct tda998x_priv *priv = dev_get_drvdata(dev);
+ struct drm_mode_config *config = &priv->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 (&priv->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 = tda998x_audio_hw_params,
+ .audio_shutdown = tda998x_audio_shutdown,
+ .digital_mute = tda998x_audio_digital_mute,
+ .get_eld = tda998x_audio_get_eld,
+};
+
+static int tda998x_audio_codec_init(struct tda998x_priv *priv,
+ struct device *dev)
+{
+ struct hdmi_codec_pdata codec_data = {
+ .ops = &audio_codec_ops,
+ .max_i2s_channels = 2,
+ };
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(priv->audio_port); i++) {
+ if (priv->audio_port[i].format == AFMT_I2S &&
+ priv->audio_port[i].config != 0)
+ codec_data.i2s = 1;
+ if (priv->audio_port[i].format == AFMT_SPDIF &&
+ priv->audio_port[i].config != 0)
+ codec_data.spdif = 1;
+ }
+
+ priv->audio_pdev = platform_device_register_data(
+ dev, HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_AUTO,
+ &codec_data, sizeof(codec_data));
+
+ return PTR_ERR_OR_ZERO(priv->audio_pdev);
+}
+
/* I2C driver functions */
+static int tda998x_get_audio_ports(struct tda998x_priv *priv,
+ struct device_node *np)
+{
+ const u32 *port_data;
+ u32 size;
+ int i;
+
+ port_data = of_get_property(np, "audio-ports", &size);
+ if (!port_data)
+ return 0;
+
+ size /= sizeof(u32);
+ if (size > 2 * ARRAY_SIZE(priv->audio_port) || size % 2 != 0) {
+ dev_err(&priv->hdmi->dev,
+ "Bad number of elements in audio-ports dt-property\n");
+ return -EINVAL;
+ }
+
+ size /= 2;
+
+ for (i = 0; i < size; i++) {
+ u8 afmt = be32_to_cpup(&port_data[2*i]);
+ u8 ena_ap = be32_to_cpup(&port_data[2*i+1]);
+
+ if (afmt != AFMT_SPDIF && afmt != AFMT_I2S) {
+ dev_err(&priv->hdmi->dev,
+ "Bad audio format %u\n", afmt);
+ return -EINVAL;
+ }
+
+ priv->audio_port[i].format = afmt;
+ priv->audio_port[i].config = ena_ap;
+ }
+
+ if (priv->audio_port[0].format == priv->audio_port[1].format) {
+ dev_err(&priv->hdmi->dev,
+ "There can only be on I2S port and one SPDIF port\n");
+ return -EINVAL;
+ }
+ return 0;
+}
+
static int tda998x_create(struct i2c_client *client, struct tda998x_priv *priv)
{
struct device_node *np = client->dev.of_node;
if (!np)
return 0; /* non-DT */
- /* get the optional video properties */
+ /* get the device tree parameters */
ret = of_property_read_u32(np, "video-ports", &video);
if (ret == 0) {
priv->vip_cntrl_0 = video >> 16;
priv->vip_cntrl_2 = video;
}
- return 0;
+ mutex_init(&priv->audio_mutex); /* Protect access from audio thread */
+ ret = tda998x_get_audio_ports(priv, np);
+ if (ret)
+ goto fail;
+
+ if (priv->audio_port[0].format != AFMT_UNUSED)
+ tda998x_audio_codec_init(priv, &client->dev);
+
+ return 0;
fail:
/* if encoder_init fails, the encoder slave is never registered,
* so cleanup here:
projects / cascardo / linux.git / commitdiff