diff options
Diffstat (limited to 'sound/soc/codecs/hdmi-codec.c')
| -rw-r--r-- | sound/soc/codecs/hdmi-codec.c | 1108 |
1 files changed, 1108 insertions, 0 deletions
diff --git a/sound/soc/codecs/hdmi-codec.c b/sound/soc/codecs/hdmi-codec.c new file mode 100644 index 0000000000..0938671700 --- /dev/null +++ b/sound/soc/codecs/hdmi-codec.c @@ -0,0 +1,1108 @@ +// 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 <jsarha@ti.com> + */ +#include <linux/module.h> +#include <linux/string.h> +#include <sound/core.h> +#include <sound/jack.h> +#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> + +#include <drm/drm_crtc.h> /* This is only to get MAX_ELD_BYTES */ + +#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 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; + 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; + + 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 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 <jsarha@ti.com>"); +MODULE_DESCRIPTION("HDMI Audio Codec Driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:" HDMI_CODEC_DRV_NAME); |