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Diffstat (limited to 'sound/soc/codecs/hdmi-codec.c')
-rw-r--r--sound/soc/codecs/hdmi-codec.c403
1 files changed, 400 insertions, 3 deletions
diff --git a/sound/soc/codecs/hdmi-codec.c b/sound/soc/codecs/hdmi-codec.c
index 90b5948e0ff3..8c5ae1fc23a9 100644
--- a/sound/soc/codecs/hdmi-codec.c
+++ b/sound/soc/codecs/hdmi-codec.c
@@ -18,6 +18,7 @@
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
+#include <sound/tlv.h>
#include <sound/pcm_drm_eld.h>
#include <sound/hdmi-codec.h>
#include <sound/pcm_iec958.h>
@@ -31,8 +32,261 @@ struct hdmi_device {
};
#define pos_to_hdmi_device(pos) container_of((pos), struct hdmi_device, list)
LIST_HEAD(hdmi_device_list);
+static DEFINE_MUTEX(hdmi_mutex);
#define DAI_NAME_SIZE 16
+
+#define HDMI_CODEC_CHMAP_IDX_UNKNOWN -1
+
+struct hdmi_codec_channel_map_table {
+ unsigned char map; /* ALSA API channel map position */
+ unsigned long spk_mask; /* speaker position bit mask */
+};
+
+/*
+ * CEA speaker placement for HDMI 1.4:
+ *
+ * FL FLC FC FRC FR FRW
+ *
+ * LFE
+ *
+ * RL RLC RC RRC RR
+ *
+ * Speaker placement has to be extended to support HDMI 2.0
+ */
+enum hdmi_codec_cea_spk_placement {
+ FL = BIT(0), /* Front Left */
+ FC = BIT(1), /* Front Center */
+ FR = BIT(2), /* Front Right */
+ FLC = BIT(3), /* Front Left Center */
+ FRC = BIT(4), /* Front Right Center */
+ RL = BIT(5), /* Rear Left */
+ RC = BIT(6), /* Rear Center */
+ RR = BIT(7), /* Rear Right */
+ RLC = BIT(8), /* Rear Left Center */
+ RRC = BIT(9), /* Rear Right Center */
+ LFE = BIT(10), /* Low Frequency Effect */
+};
+
+/*
+ * cea Speaker allocation structure
+ */
+struct hdmi_codec_cea_spk_alloc {
+ const int ca_id;
+ unsigned int n_ch;
+ unsigned long mask;
+};
+
+/* Channel maps stereo HDMI */
+const struct snd_pcm_chmap_elem hdmi_codec_stereo_chmaps[] = {
+ { .channels = 2,
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
+ { }
+};
+
+/* Channel maps for multi-channel playbacks, up to 8 n_ch */
+const struct snd_pcm_chmap_elem hdmi_codec_8ch_chmaps[] = {
+ { .channels = 2, /* CA_ID 0x00 */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
+ { .channels = 4, /* CA_ID 0x01 */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
+ SNDRV_CHMAP_NA } },
+ { .channels = 4, /* CA_ID 0x02 */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_FC } },
+ { .channels = 4, /* CA_ID 0x03 */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
+ SNDRV_CHMAP_FC } },
+ { .channels = 6, /* CA_ID 0x04 */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
+ { .channels = 6, /* CA_ID 0x05 */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
+ SNDRV_CHMAP_NA, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
+ { .channels = 6, /* CA_ID 0x06 */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
+ { .channels = 6, /* CA_ID 0x07 */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
+ SNDRV_CHMAP_FC, SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
+ { .channels = 6, /* CA_ID 0x08 */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
+ { .channels = 6, /* CA_ID 0x09 */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
+ SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
+ { .channels = 6, /* CA_ID 0x0A */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
+ { .channels = 6, /* CA_ID 0x0B */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
+ SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
+ { .channels = 8, /* CA_ID 0x0C */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
+ SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
+ { .channels = 8, /* CA_ID 0x0D */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
+ SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
+ SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
+ { .channels = 8, /* CA_ID 0x0E */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
+ SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
+ { .channels = 8, /* CA_ID 0x0F */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
+ SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
+ SNDRV_CHMAP_RC, SNDRV_CHMAP_NA } },
+ { .channels = 8, /* CA_ID 0x10 */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
+ SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
+ { .channels = 8, /* CA_ID 0x11 */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
+ SNDRV_CHMAP_NA, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
+ SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
+ { .channels = 8, /* CA_ID 0x12 */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
+ SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
+ { .channels = 8, /* CA_ID 0x13 */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
+ SNDRV_CHMAP_FC, SNDRV_CHMAP_RL, SNDRV_CHMAP_RR,
+ SNDRV_CHMAP_RLC, SNDRV_CHMAP_RRC } },
+ { .channels = 8, /* CA_ID 0x14 */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
+ { .channels = 8, /* CA_ID 0x15 */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
+ SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
+ { .channels = 8, /* CA_ID 0x16 */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
+ { .channels = 8, /* CA_ID 0x17 */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
+ SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
+ { .channels = 8, /* CA_ID 0x18 */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
+ { .channels = 8, /* CA_ID 0x19 */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
+ SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
+ { .channels = 8, /* CA_ID 0x1A */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
+ { .channels = 8, /* CA_ID 0x1B */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
+ SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
+ { .channels = 8, /* CA_ID 0x1C */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
+ { .channels = 8, /* CA_ID 0x1D */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
+ SNDRV_CHMAP_NA, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
+ { .channels = 8, /* CA_ID 0x1E */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
+ { .channels = 8, /* CA_ID 0x1F */
+ .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR, SNDRV_CHMAP_LFE,
+ SNDRV_CHMAP_FC, SNDRV_CHMAP_NA, SNDRV_CHMAP_NA,
+ SNDRV_CHMAP_FLC, SNDRV_CHMAP_FRC } },
+ { }
+};
+
+/*
+ * hdmi_codec_channel_alloc: speaker configuration available for CEA
+ *
+ * This is an ordered list that must match with hdmi_codec_8ch_chmaps struct
+ * The preceding ones have better chances to be selected by
+ * hdmi_codec_get_ch_alloc_table_idx().
+ */
+static const struct hdmi_codec_cea_spk_alloc hdmi_codec_channel_alloc[] = {
+ { .ca_id = 0x00, .n_ch = 2,
+ .mask = FL | FR},
+ /* 2.1 */
+ { .ca_id = 0x01, .n_ch = 4,
+ .mask = FL | FR | LFE},
+ /* Dolby Surround */
+ { .ca_id = 0x02, .n_ch = 4,
+ .mask = FL | FR | FC },
+ /* surround51 */
+ { .ca_id = 0x0b, .n_ch = 6,
+ .mask = FL | FR | LFE | FC | RL | RR},
+ /* surround40 */
+ { .ca_id = 0x08, .n_ch = 6,
+ .mask = FL | FR | RL | RR },
+ /* surround41 */
+ { .ca_id = 0x09, .n_ch = 6,
+ .mask = FL | FR | LFE | RL | RR },
+ /* surround50 */
+ { .ca_id = 0x0a, .n_ch = 6,
+ .mask = FL | FR | FC | RL | RR },
+ /* 6.1 */
+ { .ca_id = 0x0f, .n_ch = 8,
+ .mask = FL | FR | LFE | FC | RL | RR | RC },
+ /* surround71 */
+ { .ca_id = 0x13, .n_ch = 8,
+ .mask = FL | FR | LFE | FC | RL | RR | RLC | RRC },
+ /* others */
+ { .ca_id = 0x03, .n_ch = 8,
+ .mask = FL | FR | LFE | FC },
+ { .ca_id = 0x04, .n_ch = 8,
+ .mask = FL | FR | RC},
+ { .ca_id = 0x05, .n_ch = 8,
+ .mask = FL | FR | LFE | RC },
+ { .ca_id = 0x06, .n_ch = 8,
+ .mask = FL | FR | FC | RC },
+ { .ca_id = 0x07, .n_ch = 8,
+ .mask = FL | FR | LFE | FC | RC },
+ { .ca_id = 0x0c, .n_ch = 8,
+ .mask = FL | FR | RC | RL | RR },
+ { .ca_id = 0x0d, .n_ch = 8,
+ .mask = FL | FR | LFE | RL | RR | RC },
+ { .ca_id = 0x0e, .n_ch = 8,
+ .mask = FL | FR | FC | RL | RR | RC },
+ { .ca_id = 0x10, .n_ch = 8,
+ .mask = FL | FR | RL | RR | RLC | RRC },
+ { .ca_id = 0x11, .n_ch = 8,
+ .mask = FL | FR | LFE | RL | RR | RLC | RRC },
+ { .ca_id = 0x12, .n_ch = 8,
+ .mask = FL | FR | FC | RL | RR | RLC | RRC },
+ { .ca_id = 0x14, .n_ch = 8,
+ .mask = FL | FR | FLC | FRC },
+ { .ca_id = 0x15, .n_ch = 8,
+ .mask = FL | FR | LFE | FLC | FRC },
+ { .ca_id = 0x16, .n_ch = 8,
+ .mask = FL | FR | FC | FLC | FRC },
+ { .ca_id = 0x17, .n_ch = 8,
+ .mask = FL | FR | LFE | FC | FLC | FRC },
+ { .ca_id = 0x18, .n_ch = 8,
+ .mask = FL | FR | RC | FLC | FRC },
+ { .ca_id = 0x19, .n_ch = 8,
+ .mask = FL | FR | LFE | RC | FLC | FRC },
+ { .ca_id = 0x1a, .n_ch = 8,
+ .mask = FL | FR | RC | FC | FLC | FRC },
+ { .ca_id = 0x1b, .n_ch = 8,
+ .mask = FL | FR | LFE | RC | FC | FLC | FRC },
+ { .ca_id = 0x1c, .n_ch = 8,
+ .mask = FL | FR | RL | RR | FLC | FRC },
+ { .ca_id = 0x1d, .n_ch = 8,
+ .mask = FL | FR | LFE | RL | RR | FLC | FRC },
+ { .ca_id = 0x1e, .n_ch = 8,
+ .mask = FL | FR | FC | RL | RR | FLC | FRC },
+ { .ca_id = 0x1f, .n_ch = 8,
+ .mask = FL | FR | LFE | FC | RL | RR | FLC | FRC },
+};
+
struct hdmi_codec_priv {
struct hdmi_codec_pdata hcd;
struct snd_soc_dai_driver *daidrv;
@@ -41,6 +295,8 @@ struct hdmi_codec_priv {
struct snd_pcm_substream *current_stream;
struct snd_pcm_hw_constraint_list ratec;
uint8_t eld[MAX_ELD_BYTES];
+ struct snd_pcm_chmap *chmap_info;
+ unsigned int chmap_idx;
};
static const struct snd_soc_dapm_widget hdmi_widgets[] = {
@@ -79,6 +335,83 @@ static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
return 0;
}
+static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
+{
+ int i;
+ const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
+ [0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR,
+ [4] = RC, [5] = FLC | FRC, [6] = RLC | RRC,
+ };
+ unsigned long spk_mask = 0;
+
+ for (i = 0; i < ARRAY_SIZE(hdmi_codec_eld_spk_alloc_bits); i++) {
+ if (spk_alloc & (1 << i))
+ spk_mask |= hdmi_codec_eld_spk_alloc_bits[i];
+ }
+
+ return spk_mask;
+}
+
+void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp)
+{
+ u8 spk_alloc;
+ unsigned long spk_mask;
+
+ spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
+ spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
+
+ /* Detect if only stereo supported, else return 8 channels mappings */
+ if ((spk_mask & ~(FL | FR)) && hcp->chmap_info->max_channels > 2)
+ hcp->chmap_info->chmap = hdmi_codec_8ch_chmaps;
+ else
+ hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
+}
+
+static int hdmi_codec_get_ch_alloc_table_idx(struct hdmi_codec_priv *hcp,
+ unsigned char channels)
+{
+ int i;
+ u8 spk_alloc;
+ unsigned long spk_mask;
+ const struct hdmi_codec_cea_spk_alloc *cap = hdmi_codec_channel_alloc;
+
+ spk_alloc = drm_eld_get_spk_alloc(hcp->eld);
+ spk_mask = hdmi_codec_spk_mask_from_alloc(spk_alloc);
+
+ for (i = 0; i < ARRAY_SIZE(hdmi_codec_channel_alloc); i++, cap++) {
+ /* If spk_alloc == 0, HDMI is unplugged return stereo config*/
+ if (!spk_alloc && cap->ca_id == 0)
+ return i;
+ if (cap->n_ch != channels)
+ continue;
+ if (!(cap->mask == (spk_mask & cap->mask)))
+ continue;
+ return i;
+ }
+
+ return -EINVAL;
+}
+static int hdmi_codec_chmap_ctl_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ unsigned const char *map;
+ unsigned int i;
+ struct snd_pcm_chmap *info = snd_kcontrol_chip(kcontrol);
+ struct hdmi_codec_priv *hcp = info->private_data;
+
+ map = info->chmap[hcp->chmap_idx].map;
+
+ for (i = 0; i < info->max_channels; i++) {
+ if (hcp->chmap_idx == HDMI_CODEC_CHMAP_IDX_UNKNOWN)
+ ucontrol->value.integer.value[i] = 0;
+ else
+ ucontrol->value.integer.value[i] = map[i];
+ }
+
+ return 0;
+}
+
+
static const struct snd_kcontrol_new hdmi_controls[] = {
{
.access = SNDRV_CTL_ELEM_ACCESS_READ |
@@ -140,6 +473,8 @@ static int hdmi_codec_startup(struct snd_pcm_substream *substream,
if (ret)
return ret;
}
+ /* Select chmap supported */
+ hdmi_codec_eld_chmap(hcp);
}
return 0;
}
@@ -153,6 +488,7 @@ static void hdmi_codec_shutdown(struct snd_pcm_substream *substream,
WARN_ON(hcp->current_stream != substream);
+ hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data);
mutex_lock(&hcp->current_stream_lock);
@@ -173,7 +509,7 @@ static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
.dig_subframe = { 0 },
}
};
- int ret;
+ int ret, idx;
dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__,
params_width(params), params_rate(params),
@@ -200,6 +536,17 @@ static int hdmi_codec_hw_params(struct snd_pcm_substream *substream,
hp.cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
hp.cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
+ /* Select a channel allocation that matches with ELD and pcm channels */
+ idx = hdmi_codec_get_ch_alloc_table_idx(hcp, hp.cea.channels);
+ if (idx < 0) {
+ dev_err(dai->dev, "Not able to map channels to speakers (%d)\n",
+ idx);
+ hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
+ return idx;
+ }
+ hp.cea.channel_allocation = hdmi_codec_channel_alloc[idx].ca_id;
+ hcp->chmap_idx = hdmi_codec_channel_alloc[idx].ca_id;
+
hp.sample_width = params_width(params);
hp.sample_rate = params_rate(params);
hp.channels = params_channels(params);
@@ -328,6 +675,32 @@ static const struct snd_soc_dai_ops hdmi_dai_ops = {
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |\
SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE)
+static int hdmi_codec_pcm_new(struct snd_soc_pcm_runtime *rtd,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_dai_driver *drv = dai->driver;
+ struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai);
+ int ret;
+
+ dev_dbg(dai->dev, "%s()\n", __func__);
+
+ ret = snd_pcm_add_chmap_ctls(rtd->pcm, SNDRV_PCM_STREAM_PLAYBACK,
+ NULL, drv->playback.channels_max, 0,
+ &hcp->chmap_info);
+ if (ret < 0)
+ return ret;
+
+ /* override handlers */
+ hcp->chmap_info->private_data = hcp;
+ hcp->chmap_info->kctl->get = hdmi_codec_chmap_ctl_get;
+
+ /* default chmap supported is stereo */
+ hcp->chmap_info->chmap = hdmi_codec_stereo_chmaps;
+ hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN;
+
+ return 0;
+}
+
static struct snd_soc_dai_driver hdmi_i2s_dai = {
.id = DAI_ID_I2S,
.playback = {
@@ -339,6 +712,7 @@ static struct snd_soc_dai_driver hdmi_i2s_dai = {
.sig_bits = 24,
},
.ops = &hdmi_dai_ops,
+ .pcm_new = hdmi_codec_pcm_new,
};
static const struct snd_soc_dai_driver hdmi_spdif_dai = {
@@ -351,6 +725,7 @@ static const struct snd_soc_dai_driver hdmi_spdif_dai = {
.formats = SPDIF_FORMATS,
},
.ops = &hdmi_dai_ops,
+ .pcm_new = hdmi_codec_pcm_new,
};
static char hdmi_dai_name[][DAI_NAME_SIZE] = {
@@ -420,6 +795,7 @@ static int hdmi_codec_probe(struct platform_device *pdev)
return -ENOMEM;
hd = NULL;
+ mutex_lock(&hdmi_mutex);
list_for_each(pos, &hdmi_device_list) {
struct hdmi_device *tmp = pos_to_hdmi_device(pos);
@@ -431,13 +807,16 @@ static int hdmi_codec_probe(struct platform_device *pdev)
if (!hd) {
hd = devm_kzalloc(dev, sizeof(*hd), GFP_KERNEL);
- if (!hd)
+ if (!hd) {
+ mutex_unlock(&hdmi_mutex);
return -ENOMEM;
+ }
hd->dev = dev->parent;
list_add_tail(&hd->list, &hdmi_device_list);
}
+ mutex_unlock(&hdmi_mutex);
if (hd->cnt >= ARRAY_SIZE(hdmi_dai_name)) {
dev_err(dev, "too many hdmi codec are deteced\n");
@@ -479,7 +858,25 @@ static int hdmi_codec_probe(struct platform_device *pdev)
static int hdmi_codec_remove(struct platform_device *pdev)
{
- snd_soc_unregister_codec(&pdev->dev);
+ struct device *dev = &pdev->dev;
+ struct list_head *pos;
+ struct hdmi_codec_priv *hcp;
+
+ mutex_lock(&hdmi_mutex);
+ list_for_each(pos, &hdmi_device_list) {
+ struct hdmi_device *tmp = pos_to_hdmi_device(pos);
+
+ if (tmp->dev == dev->parent) {
+ list_del(pos);
+ break;
+ }
+ }
+ mutex_unlock(&hdmi_mutex);
+
+ hcp = dev_get_drvdata(dev);
+ kfree(hcp->chmap_info);
+ snd_soc_unregister_codec(dev);
+
return 0;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.