| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * ALSA SoC codec for HDMI encoder drivers |
| * Copyright (C) 2015 Texas Instruments Incorporated - http://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 |
| |
| 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 */ |
| 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; |
| unsigned long busy; |
| struct snd_soc_jack *jack; |
| unsigned int jack_status; |
| }; |
| |
| static const struct snd_soc_dapm_widget hdmi_widgets[] = { |
| SND_SOC_DAPM_OUTPUT("TX"), |
| }; |
| |
| 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_startup(struct snd_pcm_substream *substream, |
| struct snd_soc_dai *dai) |
| { |
| struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); |
| int ret = 0; |
| |
| ret = test_and_set_bit(0, &hcp->busy); |
| if (ret) { |
| dev_err(dai->dev, "Only one simultaneous stream supported!\n"); |
| 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 (hcp->hcd.ops->get_eld) { |
| ret = hcp->hcd.ops->get_eld(dai->dev->parent, hcp->hcd.data, |
| hcp->eld, sizeof(hcp->eld)); |
| |
| if (!ret) { |
| ret = snd_pcm_hw_constraint_eld(substream->runtime, |
| hcp->eld); |
| if (ret) |
| goto err; |
| } |
| /* Select chmap supported */ |
| hdmi_codec_eld_chmap(hcp); |
| } |
| return 0; |
| |
| err: |
| /* Release the exclusive lock on error */ |
| clear_bit(0, &hcp->busy); |
| 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); |
| |
| hcp->chmap_idx = HDMI_CODEC_CHMAP_IDX_UNKNOWN; |
| hcp->hcd.ops->audio_shutdown(dai->dev->parent, hcp->hcd.data); |
| |
| clear_bit(0, &hcp->busy); |
| } |
| |
| 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 = dai->playback_dma_data; |
| struct hdmi_codec_params hp = { |
| .iec = { |
| .status = { 0 }, |
| .subcode = { 0 }, |
| .pad = 0, |
| .dig_subframe = { 0 }, |
| } |
| }; |
| int ret, idx; |
| |
| dev_dbg(dai->dev, "%s() width %d rate %d channels %d\n", __func__, |
| params_width(params), params_rate(params), |
| params_channels(params)); |
| |
| ret = snd_pcm_create_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; |
| } |
| |
| hdmi_audio_infoframe_init(&hp.cea); |
| hp.cea.channels = params_channels(params); |
| 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; |
| |
| /* 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); |
| |
| return hcp->hcd.ops->hw_params(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 = dai->playback_dma_data; |
| |
| /* Reset daifmt */ |
| memset(cf, 0, sizeof(*cf)); |
| |
| switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| case SND_SOC_DAIFMT_CBM_CFM: |
| cf->bit_clk_master = 1; |
| cf->frame_clk_master = 1; |
| break; |
| case SND_SOC_DAIFMT_CBS_CFM: |
| cf->frame_clk_master = 1; |
| break; |
| case SND_SOC_DAIFMT_CBM_CFS: |
| cf->bit_clk_master = 1; |
| break; |
| case SND_SOC_DAIFMT_CBS_CFS: |
| 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_digital_mute(struct snd_soc_dai *dai, int mute) |
| { |
| struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); |
| |
| if (hcp->hcd.ops->digital_mute) |
| return hcp->hcd.ops->digital_mute(dai->dev->parent, |
| hcp->hcd.data, mute); |
| |
| return 0; |
| } |
| |
| static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = { |
| .startup = hdmi_codec_startup, |
| .shutdown = hdmi_codec_shutdown, |
| .hw_params = hdmi_codec_hw_params, |
| .set_fmt = hdmi_codec_i2s_set_fmt, |
| .digital_mute = hdmi_codec_digital_mute, |
| }; |
| |
| static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = { |
| .startup = hdmi_codec_startup, |
| .shutdown = hdmi_codec_shutdown, |
| .hw_params = hdmi_codec_hw_params, |
| .digital_mute = hdmi_codec_digital_mute, |
| }; |
| |
| #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_S16_BE |\ |
| SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\ |
| SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\ |
| SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE) |
| |
| /* |
| * 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_S16_BE |\ |
| SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE |\ |
| SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |\ |
| 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); |
| struct snd_kcontrol *kctl; |
| struct snd_kcontrol_new hdmi_eld_ctl = { |
| .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, |
| .device = rtd->pcm->device, |
| }; |
| 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; |
| |
| /* add ELD ctl with the device number corresponding to the PCM stream */ |
| kctl = snd_ctl_new1(&hdmi_eld_ctl, dai->component); |
| if (!kctl) |
| return -ENOMEM; |
| |
| return snd_ctl_add(rtd->card->snd_card, kctl); |
| } |
| |
| 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, |
| }; |
| int ret; |
| |
| dapm = snd_soc_component_get_dapm(dai->component); |
| ret = snd_soc_dapm_add_routes(dapm, &route, 1); |
| if (ret) |
| return ret; |
| |
| daifmt = kzalloc(sizeof(*daifmt), GFP_KERNEL); |
| if (!daifmt) |
| return -ENOMEM; |
| |
| dai->playback_dma_data = daifmt; |
| return 0; |
| } |
| |
| static void hdmi_codec_jack_report(struct hdmi_codec_priv *hcp, |
| unsigned int jack_status) |
| { |
| if (hcp->jack && jack_status != hcp->jack_status) { |
| 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) |
| hdmi_codec_jack_report(hcp, SND_JACK_LINEOUT); |
| else |
| hdmi_codec_jack_report(hcp, 0); |
| } |
| |
| /** |
| * hdmi_codec_set_jack_detect - register HDMI plugged callback |
| * @component: the hdmi-codec instance |
| * @jack: ASoC jack to report (dis)connection events on |
| */ |
| int hdmi_codec_set_jack_detect(struct snd_soc_component *component, |
| struct snd_soc_jack *jack) |
| { |
| struct hdmi_codec_priv *hcp = snd_soc_component_get_drvdata(component); |
| int ret = -EOPNOTSUPP; |
| |
| if (hcp->hcd.ops->hook_plugged_cb) { |
| hcp->jack = jack; |
| ret = hcp->hcd.ops->hook_plugged_cb(component->dev->parent, |
| hcp->hcd.data, |
| plugged_cb, |
| component->dev); |
| if (ret) |
| hcp->jack = NULL; |
| } |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(hdmi_codec_set_jack_detect); |
| |
| static int hdmi_dai_spdif_probe(struct snd_soc_dai *dai) |
| { |
| struct hdmi_codec_daifmt *cf = dai->playback_dma_data; |
| int ret; |
| |
| ret = hdmi_dai_probe(dai); |
| if (ret) |
| return ret; |
| |
| cf = dai->playback_dma_data; |
| cf->fmt = HDMI_SPDIF; |
| |
| return 0; |
| } |
| |
| static int hdmi_codec_dai_remove(struct snd_soc_dai *dai) |
| { |
| kfree(dai->playback_dma_data); |
| return 0; |
| } |
| |
| static const struct snd_soc_dai_driver hdmi_i2s_dai = { |
| .name = "i2s-hifi", |
| .id = DAI_ID_I2S, |
| .probe = hdmi_dai_probe, |
| .remove = hdmi_codec_dai_remove, |
| .playback = { |
| .stream_name = "I2S Playback", |
| .channels_min = 2, |
| .channels_max = 8, |
| .rates = HDMI_RATES, |
| .formats = I2S_FORMATS, |
| .sig_bits = 24, |
| }, |
| .ops = &hdmi_codec_i2s_dai_ops, |
| .pcm_new = hdmi_codec_pcm_new, |
| }; |
| |
| static const struct snd_soc_dai_driver hdmi_spdif_dai = { |
| .name = "spdif-hifi", |
| .id = DAI_ID_SPDIF, |
| .probe = hdmi_dai_spdif_probe, |
| .remove = hdmi_codec_dai_remove, |
| .playback = { |
| .stream_name = "SPDIF Playback", |
| .channels_min = 2, |
| .channels_max = 2, |
| .rates = HDMI_RATES, |
| .formats = SPDIF_FORMATS, |
| }, |
| .ops = &hdmi_codec_spdif_dai_ops, |
| .pcm_new = hdmi_codec_pcm_new, |
| }; |
| |
| 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 const struct snd_soc_component_driver hdmi_driver = { |
| .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, |
| .non_legacy_dai_naming = 1, |
| }; |
| |
| 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->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; |
| 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; |
| i++; |
| } |
| |
| if (hcd->spdif) |
| daidrv[i] = hdmi_spdif_dai; |
| |
| 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); |