linux/sound/soc/codecs/hdmi-codec.c

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// 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 */
#include <drm/drm_eld.h>
#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_parsed_hdmi_eld eld_parsed;
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];
struct snd_info_entry *proc_entry;
};
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;
snd_parse_eld(dai->dev, &hcp->eld_parsed,
hcp->eld, sizeof(hcp->eld));
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.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;
}
#ifdef CONFIG_SND_PROC_FS
static void print_eld_info(struct snd_info_entry *entry,
struct snd_info_buffer *buffer)
{
struct hdmi_codec_priv *hcp = entry->private_data;
snd_print_eld_info(&hcp->eld_parsed, buffer);
}
static int hdmi_dai_proc_new(struct hdmi_codec_priv *hcp,
struct snd_soc_dai *dai)
{
ASoC: hdmi-codec: use RTD ID instead of DAI ID for ELD entry commit 0ecd24a6d8b2 ("ASoC: hdmi-codec: dump ELD through procfs") adds "eld#%d" entry for sound proc. It is using DAI ID. But it is possible to have duplicate DAI ID on same Sound Card. In such case, we will get below error. To avoid duplicate entry name, use RTD ID instead of DAI ID. proc_dir_entry 'card0/eld#0' already registered WARNING: CPU: 3 PID: 74 at fs/proc/generic.c:377 proc_register+0x11c/0x1a4 Modules linked in: CPU: 3 UID: 0 PID: 74 Comm: kworker/u33:5 Not tainted 6.14.0-rc1-next-20250206-arm64-renesas #174 Hardware name: Renesas Salvator-X 2nd version board based on r8a77951 (DT) Workqueue: events_unbound deferred_probe_work_func pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : proc_register+0x11c/0x1a4 ata1: SATA link down (SStatus 0 SControl 300) lr : proc_register+0x11c/0x1a4 sp : ffff8000847db880 x29: ffff8000847db880 x28: 0000000000000000 x27: ffff0004c3403c98 x26: 0000000000000005 x25: ffff0004c14b03e4 x24: 0000000000000005 x23: ffff0004c361adb8 x22: ffff800082f24860 x21: ffff0004c361ad00 x20: ffff0004c14b0300 x19: ffff0004c14b02c0 x18: 00000000ffffffff x17: 0000000000000000 x16: 00400034b5503510 x15: ffff8001047db447 x14: 0000000000000000 x13: 6465726574736967 x12: ffff800082e66d30 x11: 000000000000028e x10: ffff800082e66d30 x9 : 00000000ffffefff x8 : ffff800082ebed30 x7 : 0000000000017fe8 x6 : 0000000000000000 x5 : 80000000fffff000 x4 : 0000000000000000 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0004c15b3600 Call trace: proc_register+0x11c/0x1a4 (P) proc_create_data+0x3c/0x60 snd_info_register+0xd0/0x130 snd_info_register+0x30/0x130 snd_info_card_register+0x1c/0xbc snd_card_register+0x194/0x1ec snd_soc_bind_card+0x7f8/0xad0 snd_soc_register_card+0xe8/0xfc devm_snd_soc_register_card+0x48/0x98 audio_graph_parse_of+0x1c4/0x1f8 graph_probe+0x6c/0x80 ... Fixes: 0ecd24a6d8b2 ("ASoC: hdmi-codec: dump ELD through procfs") Reported-by: Thuan Nguyen <thuan.nguyen-hong@banvien.com.vn> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Tested-by: Thuan Nguyen <thuan.nguyen-hong@banvien.com.vn> Acked-by: Mark Brown <broonie@kernel.org> Link: https://patch.msgid.link/87a58roatw.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2025-04-07 22:39:39 +00:00
struct snd_soc_component *component = dai->component;
struct snd_soc_card *card = component->card;
struct snd_soc_dai *d;
struct snd_soc_pcm_runtime *rtd;
struct snd_info_entry *entry;
char name[32];
ASoC: hdmi-codec: use RTD ID instead of DAI ID for ELD entry commit 0ecd24a6d8b2 ("ASoC: hdmi-codec: dump ELD through procfs") adds "eld#%d" entry for sound proc. It is using DAI ID. But it is possible to have duplicate DAI ID on same Sound Card. In such case, we will get below error. To avoid duplicate entry name, use RTD ID instead of DAI ID. proc_dir_entry 'card0/eld#0' already registered WARNING: CPU: 3 PID: 74 at fs/proc/generic.c:377 proc_register+0x11c/0x1a4 Modules linked in: CPU: 3 UID: 0 PID: 74 Comm: kworker/u33:5 Not tainted 6.14.0-rc1-next-20250206-arm64-renesas #174 Hardware name: Renesas Salvator-X 2nd version board based on r8a77951 (DT) Workqueue: events_unbound deferred_probe_work_func pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : proc_register+0x11c/0x1a4 ata1: SATA link down (SStatus 0 SControl 300) lr : proc_register+0x11c/0x1a4 sp : ffff8000847db880 x29: ffff8000847db880 x28: 0000000000000000 x27: ffff0004c3403c98 x26: 0000000000000005 x25: ffff0004c14b03e4 x24: 0000000000000005 x23: ffff0004c361adb8 x22: ffff800082f24860 x21: ffff0004c361ad00 x20: ffff0004c14b0300 x19: ffff0004c14b02c0 x18: 00000000ffffffff x17: 0000000000000000 x16: 00400034b5503510 x15: ffff8001047db447 x14: 0000000000000000 x13: 6465726574736967 x12: ffff800082e66d30 x11: 000000000000028e x10: ffff800082e66d30 x9 : 00000000ffffefff x8 : ffff800082ebed30 x7 : 0000000000017fe8 x6 : 0000000000000000 x5 : 80000000fffff000 x4 : 0000000000000000 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0004c15b3600 Call trace: proc_register+0x11c/0x1a4 (P) proc_create_data+0x3c/0x60 snd_info_register+0xd0/0x130 snd_info_register+0x30/0x130 snd_info_card_register+0x1c/0xbc snd_card_register+0x194/0x1ec snd_soc_bind_card+0x7f8/0xad0 snd_soc_register_card+0xe8/0xfc devm_snd_soc_register_card+0x48/0x98 audio_graph_parse_of+0x1c4/0x1f8 graph_probe+0x6c/0x80 ... Fixes: 0ecd24a6d8b2 ("ASoC: hdmi-codec: dump ELD through procfs") Reported-by: Thuan Nguyen <thuan.nguyen-hong@banvien.com.vn> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Tested-by: Thuan Nguyen <thuan.nguyen-hong@banvien.com.vn> Acked-by: Mark Brown <broonie@kernel.org> Link: https://patch.msgid.link/87a58roatw.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2025-04-07 22:39:39 +00:00
int err, i, id = 0;
ASoC: hdmi-codec: use RTD ID instead of DAI ID for ELD entry commit 0ecd24a6d8b2 ("ASoC: hdmi-codec: dump ELD through procfs") adds "eld#%d" entry for sound proc. It is using DAI ID. But it is possible to have duplicate DAI ID on same Sound Card. In such case, we will get below error. To avoid duplicate entry name, use RTD ID instead of DAI ID. proc_dir_entry 'card0/eld#0' already registered WARNING: CPU: 3 PID: 74 at fs/proc/generic.c:377 proc_register+0x11c/0x1a4 Modules linked in: CPU: 3 UID: 0 PID: 74 Comm: kworker/u33:5 Not tainted 6.14.0-rc1-next-20250206-arm64-renesas #174 Hardware name: Renesas Salvator-X 2nd version board based on r8a77951 (DT) Workqueue: events_unbound deferred_probe_work_func pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : proc_register+0x11c/0x1a4 ata1: SATA link down (SStatus 0 SControl 300) lr : proc_register+0x11c/0x1a4 sp : ffff8000847db880 x29: ffff8000847db880 x28: 0000000000000000 x27: ffff0004c3403c98 x26: 0000000000000005 x25: ffff0004c14b03e4 x24: 0000000000000005 x23: ffff0004c361adb8 x22: ffff800082f24860 x21: ffff0004c361ad00 x20: ffff0004c14b0300 x19: ffff0004c14b02c0 x18: 00000000ffffffff x17: 0000000000000000 x16: 00400034b5503510 x15: ffff8001047db447 x14: 0000000000000000 x13: 6465726574736967 x12: ffff800082e66d30 x11: 000000000000028e x10: ffff800082e66d30 x9 : 00000000ffffefff x8 : ffff800082ebed30 x7 : 0000000000017fe8 x6 : 0000000000000000 x5 : 80000000fffff000 x4 : 0000000000000000 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0004c15b3600 Call trace: proc_register+0x11c/0x1a4 (P) proc_create_data+0x3c/0x60 snd_info_register+0xd0/0x130 snd_info_register+0x30/0x130 snd_info_card_register+0x1c/0xbc snd_card_register+0x194/0x1ec snd_soc_bind_card+0x7f8/0xad0 snd_soc_register_card+0xe8/0xfc devm_snd_soc_register_card+0x48/0x98 audio_graph_parse_of+0x1c4/0x1f8 graph_probe+0x6c/0x80 ... Fixes: 0ecd24a6d8b2 ("ASoC: hdmi-codec: dump ELD through procfs") Reported-by: Thuan Nguyen <thuan.nguyen-hong@banvien.com.vn> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Tested-by: Thuan Nguyen <thuan.nguyen-hong@banvien.com.vn> Acked-by: Mark Brown <broonie@kernel.org> Link: https://patch.msgid.link/87a58roatw.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>
2025-04-07 22:39:39 +00:00
/*
* To avoid duplicate proc entry, find its rtd and use rtd->id
* instead of dai->id
*/
for_each_card_rtds(card, rtd) {
for_each_rtd_dais(rtd, i, d)
if (d == dai) {
id = rtd->id;
goto found;
}
}
found:
snprintf(name, sizeof(name), "eld#%d", id);
err = snd_card_proc_new(card->snd_card, name, &entry);
if (err < 0)
return err;
snd_info_set_text_ops(entry, hcp, print_eld_info);
hcp->proc_entry = entry;
return 0;
}
static void hdmi_dai_proc_free(struct hdmi_codec_priv *hcp)
{
snd_info_free_entry(hcp->proc_entry);
hcp->proc_entry = NULL;
}
#else
static int hdmi_dai_proc_new(struct hdmi_codec_priv *hcp,
struct snd_soc_dai *dai)
{
return 0;
}
static void hdmi_dai_proc_free(struct hdmi_codec_priv *hcp)
{
}
#endif
static int hdmi_dai_probe(struct snd_soc_dai *dai)
{
struct hdmi_codec_priv *hcp =
snd_soc_component_get_drvdata(dai->component);
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 hdmi_dai_proc_new(hcp, dai);
}
static int hdmi_dai_remove(struct snd_soc_dai *dai)
{
struct hdmi_codec_priv *hcp =
snd_soc_component_get_drvdata(dai->component);
hdmi_dai_proc_free(hcp);
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_AVOUT);
hcp->jack_status = jack_status;
}
}
static void plugged_cb(struct device *dev, bool plugged)
{
struct hdmi_codec_priv *hcp = dev_get_drvdata(dev);
int ret;
if (plugged) {
if (hcp->hcd.ops->get_eld) {
hcp->hcd.ops->get_eld(dev->parent, hcp->hcd.data,
hcp->eld, sizeof(hcp->eld));
ret = snd_parse_eld(dev, &hcp->eld_parsed,
hcp->eld, sizeof(hcp->eld));
if (ret < 0)
dev_dbg(dev, "Failed to parse ELD: %d\n", ret);
else
snd_show_eld(dev, &hcp->eld_parsed);
}
hdmi_codec_jack_report(hcp, SND_JACK_AVOUT);
} 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_AVOUT);
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,
.remove = hdmi_dai_remove,
.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,
.prepare = hdmi_codec_prepare,
.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, hcp->hcd.data);
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->i2s_formats) {
daidrv[i].playback.formats = hcd->i2s_formats;
daidrv[i].capture.formats = hcd->i2s_formats;
}
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));
}
ASoC: hdmi-codec: fix oops on re-probe hdmi-codec oopses the kernel when it is unbound from a successfully bound audio subsystem, and is then rebound: Unable to handle kernel NULL pointer dereference at virtual address 0000001c pgd = ee3f0000 [0000001c] *pgd=3cc59831 Internal error: Oops: 817 [#1] PREEMPT ARM Modules linked in: ext2 snd_soc_spdif_tx vmeta dove_thermal snd_soc_kirkwood ofpart marvell_cesa m25p80 orion_wdt mtd spi_nor des_generic gpio_ir_recv snd_soc_kirkwood_spdif bmm_dmabuf auth_rpcgss nfsd autofs4 etnaviv thermal_sys hwmon gpu_sched tda9950 CPU: 0 PID: 1005 Comm: bash Not tainted 4.20.0+ #1762 Hardware name: Marvell Dove (Cubox) PC is at hdmi_dai_probe+0x68/0x80 LR is at find_held_lock+0x20/0x94 pc : [<c04c7de0>] lr : [<c0063bf4>] psr: 600f0013 sp : ee15bd28 ip : eebd8b1c fp : c093b488 r10: ee048000 r9 : eebdab18 r8 : ee048600 r7 : 00000001 r6 : 00000000 r5 : 00000000 r4 : ee82c100 r3 : 00000006 r2 : 00000001 r1 : c067e38c r0 : ee82c100 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none[ 297.318599] Control: 10c5387d Table: 2e3f0019 DAC: 00000051 Process bash (pid: 1005, stack limit = 0xee15a248) ... [<c04c7de0>] (hdmi_dai_probe) from [<c04b7060>] (soc_probe_dai.part.9+0x34/0x70) [<c04b7060>] (soc_probe_dai.part.9) from [<c04b81a8>] (snd_soc_instantiate_card+0x734/0xc9c) [<c04b81a8>] (snd_soc_instantiate_card) from [<c04b8b6c>] (snd_soc_add_component+0x29c/0x378) [<c04b8b6c>] (snd_soc_add_component) from [<c04b8c8c>] (snd_soc_register_component+0x44/0x54) [<c04b8c8c>] (snd_soc_register_component) from [<c04c64b4>] (devm_snd_soc_register_component+0x48/0x84) [<c04c64b4>] (devm_snd_soc_register_component) from [<c04c7be8>] (hdmi_codec_probe+0x150/0x260) [<c04c7be8>] (hdmi_codec_probe) from [<c0373124>] (platform_drv_probe+0x48/0x98) This happens because hdmi_dai_probe() attempts to access the HDMI codec private data, but this has not been assigned by hdmi_dai_probe() before it calls devm_snd_soc_register_component(). Move the call to dev_set_drvdata() before devm_snd_soc_register_component() to avoid this oops. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
2019-01-17 17:32:05 +00:00
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);