// SPDX-License-Identifier: GPL-2.0-only /* * ALSA SoC codec for HDMI encoder drivers * Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/ * Author: Jyri Sarha */ #include #include #include #include #include #include #include #include #include #include #include #include /* This is only to get MAX_ELD_BYTES */ #include #define HDMI_CODEC_CHMAP_IDX_UNKNOWN -1 /* * 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 */ static 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 */ static 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 where ca_id must exist in hdmi_codec_8ch_chmaps * 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 }, { .ca_id = 0x03, .n_ch = 4, .mask = FL | FR | LFE | FC }, { .ca_id = 0x02, .n_ch = 4, .mask = FL | FR | FC }, { .ca_id = 0x01, .n_ch = 4, .mask = FL | FR | LFE }, { .ca_id = 0x0b, .n_ch = 6, .mask = FL | FR | LFE | FC | RL | RR }, { .ca_id = 0x0a, .n_ch = 6, .mask = FL | FR | FC | RL | RR }, { .ca_id = 0x09, .n_ch = 6, .mask = FL | FR | LFE | RL | RR }, { .ca_id = 0x08, .n_ch = 6, .mask = FL | FR | RL | RR }, { .ca_id = 0x07, .n_ch = 6, .mask = FL | FR | LFE | FC | RC }, { .ca_id = 0x06, .n_ch = 6, .mask = FL | FR | FC | RC }, { .ca_id = 0x05, .n_ch = 6, .mask = FL | FR | LFE | RC }, { .ca_id = 0x04, .n_ch = 6, .mask = FL | FR | RC }, { .ca_id = 0x13, .n_ch = 8, .mask = FL | FR | LFE | FC | RL | RR | RLC | RRC }, { .ca_id = 0x1f, .n_ch = 8, .mask = FL | FR | LFE | FC | RL | RR | FLC | FRC }, { .ca_id = 0x12, .n_ch = 8, .mask = FL | FR | FC | RL | RR | RLC | RRC }, { .ca_id = 0x1e, .n_ch = 8, .mask = FL | FR | FC | RL | RR | FLC | FRC }, { .ca_id = 0x11, .n_ch = 8, .mask = FL | FR | LFE | RL | RR | RLC | RRC }, { .ca_id = 0x1d, .n_ch = 8, .mask = FL | FR | LFE | RL | RR | FLC | FRC }, { .ca_id = 0x10, .n_ch = 8, .mask = FL | FR | RL | RR | RLC | RRC }, { .ca_id = 0x1c, .n_ch = 8, .mask = FL | FR | RL | RR | FLC | FRC }, { .ca_id = 0x0f, .n_ch = 8, .mask = FL | FR | LFE | FC | RL | RR | RC }, { .ca_id = 0x1b, .n_ch = 8, .mask = FL | FR | LFE | RC | FC | FLC | FRC }, { .ca_id = 0x0e, .n_ch = 8, .mask = FL | FR | FC | RL | RR | RC }, { .ca_id = 0x1a, .n_ch = 8, .mask = FL | FR | RC | FC | FLC | FRC }, { .ca_id = 0x0d, .n_ch = 8, .mask = FL | FR | LFE | RL | RR | RC }, { .ca_id = 0x19, .n_ch = 8, .mask = FL | FR | LFE | RC | FLC | FRC }, { .ca_id = 0x0c, .n_ch = 8, .mask = FL | FR | RC | RL | RR }, { .ca_id = 0x18, .n_ch = 8, .mask = FL | FR | RC | FLC | FRC }, { .ca_id = 0x17, .n_ch = 8, .mask = FL | FR | LFE | FC | FLC | FRC }, { .ca_id = 0x16, .n_ch = 8, .mask = FL | FR | FC | FLC | FRC }, { .ca_id = 0x15, .n_ch = 8, .mask = FL | FR | LFE | FLC | FRC }, { .ca_id = 0x14, .n_ch = 8, .mask = FL | FR | FLC | FRC }, { .ca_id = 0x0b, .n_ch = 8, .mask = FL | FR | LFE | FC | RL | RR }, { .ca_id = 0x0a, .n_ch = 8, .mask = FL | FR | FC | RL | RR }, { .ca_id = 0x09, .n_ch = 8, .mask = FL | FR | LFE | RL | RR }, { .ca_id = 0x08, .n_ch = 8, .mask = FL | FR | RL | RR }, { .ca_id = 0x07, .n_ch = 8, .mask = FL | FR | LFE | FC | RC }, { .ca_id = 0x06, .n_ch = 8, .mask = FL | FR | FC | RC }, { .ca_id = 0x05, .n_ch = 8, .mask = FL | FR | LFE | RC }, { .ca_id = 0x04, .n_ch = 8, .mask = FL | FR | RC }, { .ca_id = 0x03, .n_ch = 8, .mask = FL | FR | LFE | FC }, { .ca_id = 0x02, .n_ch = 8, .mask = FL | FR | FC }, { .ca_id = 0x01, .n_ch = 8, .mask = FL | FR | LFE }, }; struct hdmi_codec_priv { struct hdmi_codec_pdata hcd; uint8_t eld[MAX_ELD_BYTES]; struct snd_pcm_chmap *chmap_info; unsigned int chmap_idx; struct mutex lock; bool busy; struct snd_soc_jack *jack; unsigned int jack_status; u8 iec_status[AES_IEC958_STATUS_SIZE]; }; static const struct snd_soc_dapm_widget hdmi_widgets[] = { SND_SOC_DAPM_OUTPUT("TX"), SND_SOC_DAPM_OUTPUT("RX"), }; enum { DAI_ID_I2S = 0, DAI_ID_SPDIF, }; static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; uinfo->count = sizeof_field(struct hdmi_codec_priv, eld); return 0; } static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); memcpy(ucontrol->value.bytes.data, hcp->eld, sizeof(hcp->eld)); return 0; } static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc) { int i; static 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; } static 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; if (hcp->chmap_idx != HDMI_CODEC_CHMAP_IDX_UNKNOWN) 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 int hdmi_codec_iec958_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; uinfo->count = 1; return 0; } static int hdmi_codec_iec958_default_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); memcpy(ucontrol->value.iec958.status, hcp->iec_status, sizeof(hcp->iec_status)); return 0; } static int hdmi_codec_iec958_default_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); memcpy(hcp->iec_status, ucontrol->value.iec958.status, sizeof(hcp->iec_status)); return 0; } static int hdmi_codec_iec958_mask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { memset(ucontrol->value.iec958.status, 0xff, sizeof_field(struct hdmi_codec_priv, iec_status)); return 0; } static int hdmi_codec_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; bool has_capture = !hcp->hcd.no_i2s_capture; bool has_playback = !hcp->hcd.no_i2s_playback; int ret = 0; if (!((has_playback && tx) || (has_capture && !tx))) return 0; mutex_lock(&hcp->lock); if (hcp->busy) { dev_err(dai->dev, "Only one simultaneous stream supported!\n"); mutex_unlock(&hcp->lock); return -EINVAL; } if (hcp->hcd.ops->audio_startup) { ret = hcp->hcd.ops->audio_startup(dai->dev->parent, hcp->hcd.data); if (ret) goto err; } if (tx && hcp->hcd.ops->get_eld) { ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data, hcp->eld, sizeof(hcp->eld)); if (ret) goto err; ret = snd_pcm_hw_constraint_eld(substream->runtime, hcp->eld); if (ret) goto err; /* Select chmap supported */ hdmi_codec_eld_chmap(hcp); } hcp->busy = true; err: mutex_unlock(&hcp->lock); return ret; } static void hdmi_codec_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; bool has_capture = !hcp->hcd.no_i2s_capture; bool has_playback = !hcp->hcd.no_i2s_playback; if (!((has_playback && tx) || (has_capture && !tx))) return; hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN; hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data); mutex_lock(&hcp->lock); hcp->busy = false; mutex_unlock(&hcp->lock); } static int hdmi_codec_fill_codec_params(struct snd_soc_dai *dai, unsigned int sample_width, unsigned int sample_rate, unsigned int channels, struct hdmi_codec_params *hp) { struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); int idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN; u8 ca_id = 0; bool pcm_audio = !(hcp->iec_status[0] & IEC958_AES0_NONAUDIO); if (pcm_audio) { /* Select a channel allocation that matches with ELD and pcm channels */ idx = hdmi_codec_get_ch_alloc_table_idx(hcp, 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; } ca_id = hdmi_codec_channel_alloc[idx].ca_id; } memset(hp, 0, sizeof(*hp)); hdmi_audio_infoframe_init(&hp->cea); if (pcm_audio) hp->cea.channels = channels; else hp->cea.channels = 0; hp->cea.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM; hp->cea.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM; hp->cea.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM; hp->cea.channel_allocation = ca_id; hp->sample_width = sample_width; hp->sample_rate = sample_rate; hp->channels = channels; if (pcm_audio) hcp->chmap_idx = ca_id; else hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN; return 0; } static int hdmi_codec_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); struct hdmi_codec_daifmt *cf = snd_soc_dai_dma_data_get_playback(dai); struct hdmi_codec_params hp = { .iec = { .status = { 0 }, .subcode = { 0 }, .pad = 0, .dig_subframe = { 0 }, } }; int ret; if (!hcp->hcd.ops->hw_params) return 0; dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__, params_width(params), params_rate(params), params_channels(params)); ret = hdmi_codec_fill_codec_params(dai, params_width(params), params_rate(params), params_channels(params), &hp); if (ret < 0) return ret; memcpy(hp.iec.status, hcp->iec_status, sizeof(hp.iec.status)); ret = snd_pcm_fill_iec958_consumer_hw_params(params, hp.iec.status, sizeof(hp.iec.status)); if (ret < 0) { dev_err(dai->dev, "Creating IEC958 channel status failed %d\n", ret); return ret; } cf->bit_fmt = params_format(params); return hcp->hcd.ops->hw_params(dai->dev->parent, hcp->hcd.data, cf, &hp); } static int hdmi_codec_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); struct hdmi_codec_daifmt *cf = snd_soc_dai_dma_data_get_playback(dai); struct snd_pcm_runtime *runtime = substream->runtime; unsigned int channels = runtime->channels; unsigned int width = snd_pcm_format_width(runtime->format); unsigned int rate = runtime->rate; struct hdmi_codec_params hp; int ret; if (!hcp->hcd.ops->prepare) return 0; dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__, width, rate, channels); ret = hdmi_codec_fill_codec_params(dai, width, rate, channels, &hp); if (ret < 0) return ret; memcpy(hp.iec.status, hcp->iec_status, sizeof(hp.iec.status)); ret = snd_pcm_fill_iec958_consumer(runtime, hp.iec.status, sizeof(hp.iec.status)); if (ret < 0) { dev_err(dai->dev, "Creating IEC958 channel status failed %d\n", ret); return ret; } cf->bit_fmt = runtime->format; return hcp->hcd.ops->prepare(dai->dev->parent, hcp->hcd.data, cf, &hp); } static int hdmi_codec_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) { struct hdmi_codec_daifmt *cf = snd_soc_dai_dma_data_get_playback(dai); /* Reset daifmt */ memset(cf, 0, sizeof(*cf)); switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { case SND_SOC_DAIFMT_CBP_CFP: cf->bit_clk_provider = 1; cf->frame_clk_provider = 1; break; case SND_SOC_DAIFMT_CBC_CFP: cf->frame_clk_provider = 1; break; case SND_SOC_DAIFMT_CBP_CFC: cf->bit_clk_provider = 1; break; case SND_SOC_DAIFMT_CBC_CFC: break; default: return -EINVAL; } switch (fmt & SND_SOC_DAIFMT_INV_MASK) { case SND_SOC_DAIFMT_NB_NF: break; case SND_SOC_DAIFMT_NB_IF: cf->frame_clk_inv = 1; break; case SND_SOC_DAIFMT_IB_NF: cf->bit_clk_inv = 1; break; case SND_SOC_DAIFMT_IB_IF: cf->frame_clk_inv = 1; cf->bit_clk_inv = 1; break; } switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_I2S: cf->fmt = HDMI_I2S; break; case SND_SOC_DAIFMT_DSP_A: cf->fmt = HDMI_DSP_A; break; case SND_SOC_DAIFMT_DSP_B: cf->fmt = HDMI_DSP_B; break; case SND_SOC_DAIFMT_RIGHT_J: cf->fmt = HDMI_RIGHT_J; break; case SND_SOC_DAIFMT_LEFT_J: cf->fmt = HDMI_LEFT_J; break; case SND_SOC_DAIFMT_AC97: cf->fmt = HDMI_AC97; break; default: dev_err(dai->dev, "Invalid DAI interface format\n"); return -EINVAL; } return 0; } static int hdmi_codec_mute(struct snd_soc_dai *dai, int mute, int direction) { struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); /* * ignore if direction was CAPTURE * and it had .no_capture_mute flag * see * snd_soc_dai_digital_mute() */ if (hcp->hcd.ops->mute_stream && (direction == SNDRV_PCM_STREAM_PLAYBACK || !hcp->hcd.ops->no_capture_mute)) return hcp->hcd.ops->mute_stream(dai->dev->parent, hcp->hcd.data, mute, direction); return -ENOTSUPP; } /* * This driver can select all SND_SOC_DAIFMT_CBx_CFx, * but need to be selected from Sound Card, not be auto selected. * Because it might be used from other driver. * For example, * ${LINUX}/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c */ static const u64 hdmi_codec_formats = SND_SOC_POSSIBLE_DAIFMT_NB_NF | SND_SOC_POSSIBLE_DAIFMT_NB_IF | SND_SOC_POSSIBLE_DAIFMT_IB_NF | SND_SOC_POSSIBLE_DAIFMT_IB_IF | SND_SOC_POSSIBLE_DAIFMT_I2S | SND_SOC_POSSIBLE_DAIFMT_DSP_A | SND_SOC_POSSIBLE_DAIFMT_DSP_B | SND_SOC_POSSIBLE_DAIFMT_RIGHT_J | SND_SOC_POSSIBLE_DAIFMT_LEFT_J | SND_SOC_POSSIBLE_DAIFMT_AC97; #define HDMI_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\ SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\ SNDRV_PCM_RATE_192000) #define SPDIF_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE) /* * This list is only for formats allowed on the I2S bus. So there is * some formats listed that are not supported by HDMI interface. For * instance allowing the 32-bit formats enables 24-precision with CPU * DAIs that do not support 24-bit formats. If the extra formats cause * problems, we should add the video side driver an option to disable * them. */ #define I2S_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE |\ SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE) static struct snd_kcontrol_new hdmi_codec_controls[] = { { .access = SNDRV_CTL_ELEM_ACCESS_READ, .iface = SNDRV_CTL_ELEM_IFACE_PCM, .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK), .info = hdmi_codec_iec958_info, .get = hdmi_codec_iec958_mask_get, }, { .iface = SNDRV_CTL_ELEM_IFACE_PCM, .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT), .info = hdmi_codec_iec958_info, .get = hdmi_codec_iec958_default_get, .put = hdmi_codec_iec958_default_put, }, { .access = (SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE), .iface = SNDRV_CTL_ELEM_IFACE_PCM, .name = "ELD", .info = hdmi_eld_ctl_info, .get = hdmi_eld_ctl_get, }, }; 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); unsigned int i; int ret; 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; for (i = 0; i < ARRAY_SIZE(hdmi_codec_controls); i++) { struct snd_kcontrol *kctl; /* add ELD ctl with the device number corresponding to the PCM stream */ kctl = snd_ctl_new1(&hdmi_codec_controls[i], dai->component); if (!kctl) return -ENOMEM; kctl->id.device = rtd->pcm->device; ret = snd_ctl_add(rtd->card->snd_card, kctl); if (ret < 0) return ret; } return 0; } static int hdmi_dai_probe(struct snd_soc_dai *dai) { struct snd_soc_dapm_context *dapm; struct hdmi_codec_daifmt *daifmt; struct snd_soc_dapm_route route[] = { { .sink = "TX", .source = dai->driver->playback.stream_name, }, { .sink = dai->driver->capture.stream_name, .source = "RX", }, }; int ret, i; dapm = snd_soc_component_get_dapm(dai->component); /* One of the directions might be omitted for unidirectional DAIs */ for (i = 0; i < ARRAY_SIZE(route); i++) { if (!route[i].source || !route[i].sink) continue; ret = snd_soc_dapm_add_routes(dapm, &route[i], 1); if (ret) return ret; } daifmt = devm_kzalloc(dai->dev, sizeof(*daifmt), GFP_KERNEL); if (!daifmt) return -ENOMEM; snd_soc_dai_dma_data_set_playback(dai, daifmt); return 0; } static void hdmi_codec_jack_report(struct hdmi_codec_priv *hcp, unsigned int jack_status) { if (jack_status != hcp->jack_status) { if (hcp->jack) snd_soc_jack_report(hcp->jack, jack_status, SND_JACK_LINEOUT); hcp->jack_status = jack_status; } } static void plugged_cb(struct device *dev, bool plugged) { struct hdmi_codec_priv *hcp = dev_get_drvdata(dev); if (plugged) { if (hcp->hcd.ops->get_eld) { hcp->hcd.ops->get_eld(dev->parent, hcp->hcd.data, hcp->eld, sizeof(hcp->eld)); } hdmi_codec_jack_report(hcp, SND_JACK_LINEOUT); } else { hdmi_codec_jack_report(hcp, 0); memset(hcp->eld, 0, sizeof(hcp->eld)); } } static int hdmi_codec_set_jack(struct snd_soc_component *component, struct snd_soc_jack *jack, void *data) { struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); if (hcp->hcd.ops->hook_plugged_cb) { hcp->jack = jack; /* * Report the initial jack status which may have been provided * by the parent hdmi driver while the hpd hook was registered. */ snd_soc_jack_report(jack, hcp->jack_status, SND_JACK_LINEOUT); return 0; } return -ENOTSUPP; } static int hdmi_dai_spdif_probe(struct snd_soc_dai *dai) { struct hdmi_codec_daifmt *cf; int ret; ret = hdmi_dai_probe(dai); if (ret) return ret; cf = snd_soc_dai_dma_data_get_playback(dai); cf->fmt = HDMI_SPDIF; return 0; } static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = { .probe = hdmi_dai_probe, .startup = hdmi_codec_startup, .shutdown = hdmi_codec_shutdown, .hw_params = hdmi_codec_hw_params, .prepare = hdmi_codec_prepare, .set_fmt = hdmi_codec_i2s_set_fmt, .mute_stream = hdmi_codec_mute, .pcm_new = hdmi_codec_pcm_new, .auto_selectable_formats = &hdmi_codec_formats, .num_auto_selectable_formats = 1, }; static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = { .probe = hdmi_dai_spdif_probe, .startup = hdmi_codec_startup, .shutdown = hdmi_codec_shutdown, .hw_params = hdmi_codec_hw_params, .mute_stream = hdmi_codec_mute, .pcm_new = hdmi_codec_pcm_new, }; static const struct snd_soc_dai_driver hdmi_i2s_dai = { .name = "i2s-hifi", .id = DAI_ID_I2S, .playback = { .stream_name = "I2S Playback", .channels_min = 2, .channels_max = 8, .rates = HDMI_RATES, .formats = I2S_FORMATS, .sig_bits = 24, }, .capture = { .stream_name = "Capture", .channels_min = 2, .channels_max = 8, .rates = HDMI_RATES, .formats = I2S_FORMATS, .sig_bits = 24, }, .ops = &hdmi_codec_i2s_dai_ops, }; static const struct snd_soc_dai_driver hdmi_spdif_dai = { .name = "spdif-hifi", .id = DAI_ID_SPDIF, .playback = { .stream_name = "SPDIF Playback", .channels_min = 2, .channels_max = 2, .rates = HDMI_RATES, .formats = SPDIF_FORMATS, }, .capture = { .stream_name = "Capture", .channels_min = 2, .channels_max = 2, .rates = HDMI_RATES, .formats = SPDIF_FORMATS, }, .ops = &hdmi_codec_spdif_dai_ops, }; static int hdmi_of_xlate_dai_id(struct snd_soc_component *component, struct device_node *endpoint) { struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */ if (hcp->hcd.ops->get_dai_id) ret = hcp->hcd.ops->get_dai_id(component, endpoint); return ret; } static int hdmi_probe(struct snd_soc_component *component) { struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); int ret = 0; if (hcp->hcd.ops->hook_plugged_cb) { ret = hcp->hcd.ops->hook_plugged_cb(component->dev->parent, hcp->hcd.data, plugged_cb, component->dev); } return ret; } static void hdmi_remove(struct snd_soc_component *component) { struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); if (hcp->hcd.ops->hook_plugged_cb) hcp->hcd.ops->hook_plugged_cb(component->dev->parent, hcp->hcd.data, NULL, NULL); } static const struct snd_soc_component_driver hdmi_driver = { .probe = hdmi_probe, .remove = hdmi_remove, .dapm_widgets = hdmi_widgets, .num_dapm_widgets = ARRAY_SIZE(hdmi_widgets), .of_xlate_dai_id = hdmi_of_xlate_dai_id, .idle_bias_on = 1, .use_pmdown_time = 1, .endianness = 1, .set_jack = hdmi_codec_set_jack, }; static int hdmi_codec_probe(struct platform_device *pdev) { struct hdmi_codec_pdata *hcd = pdev->dev.platform_data; struct snd_soc_dai_driver *daidrv; struct device *dev = &pdev->dev; struct hdmi_codec_priv *hcp; int dai_count, i = 0; int ret; if (!hcd) { dev_err(dev, "%s: No platform data\n", __func__); return -EINVAL; } dai_count = hcd->i2s + hcd->spdif; if (dai_count < 1 || !hcd->ops || (!hcd->ops->hw_params && !hcd->ops->prepare) || !hcd->ops->audio_shutdown) { dev_err(dev, "%s: Invalid parameters\n", __func__); return -EINVAL; } hcp = devm_kzalloc(dev, sizeof(*hcp), GFP_KERNEL); if (!hcp) return -ENOMEM; hcp->hcd = *hcd; mutex_init(&hcp->lock); ret = snd_pcm_create_iec958_consumer_default(hcp->iec_status, sizeof(hcp->iec_status)); if (ret < 0) return ret; daidrv = devm_kcalloc(dev, dai_count, sizeof(*daidrv), GFP_KERNEL); if (!daidrv) return -ENOMEM; if (hcd->i2s) { daidrv[i] = hdmi_i2s_dai; daidrv[i].playback.channels_max = hcd->max_i2s_channels; if (hcd->no_i2s_playback) memset(&daidrv[i].playback, 0, sizeof(daidrv[i].playback)); if (hcd->no_i2s_capture) memset(&daidrv[i].capture, 0, sizeof(daidrv[i].capture)); i++; } if (hcd->spdif) { daidrv[i] = hdmi_spdif_dai; if (hcd->no_spdif_playback) memset(&daidrv[i].playback, 0, sizeof(daidrv[i].playback)); if (hcd->no_spdif_capture) memset(&daidrv[i].capture, 0, sizeof(daidrv[i].capture)); } dev_set_drvdata(dev, hcp); ret = devm_snd_soc_register_component(dev, &hdmi_driver, daidrv, dai_count); if (ret) { dev_err(dev, "%s: snd_soc_register_component() failed (%d)\n", __func__, ret); return ret; } return 0; } static struct platform_driver hdmi_codec_driver = { .driver = { .name = HDMI_CODEC_DRV_NAME, }, .probe = hdmi_codec_probe, }; module_platform_driver(hdmi_codec_driver); MODULE_AUTHOR("Jyri Sarha "); MODULE_DESCRIPTION("HDMI Audio Codec Driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME);