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Message-Id: <20240520-asoc-x1e80100-4-channel-mapping-v4-3-f657159b4aad@linaro.org>
Date: Mon, 20 May 2024 16:19:58 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: James Schulman <james.schulman@...rus.com>,
David Rhodes <david.rhodes@...rus.com>,
Richard Fitzgerald <rf@...nsource.cirrus.com>,
Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>,
Lars-Peter Clausen <lars@...afoo.de>,
Nuno Sá <nuno.sa@...log.com>,
Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
Banajit Goswami <bgoswami@...cinc.com>
Cc: alsa-devel@...a-project.org, patches@...nsource.cirrus.com,
linux-sound@...r.kernel.org, linux-kernel@...r.kernel.org,
Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH v4 3/4] ASoC: qcom: qdsp6: Set channel mapping instead of
fixed defaults
When constructing packets to DSP, the Audioreach code uses 'struct
audioreach_module_config' to configure parameters like number of
channels, bitrate, sample rate etc, but uses defaults for the channel
mapping.
Rework this code to copy the channel mapping from 'struct
audioreach_module_config', instead of using the default. This requires
all callers to fill that structure: add missing initialization of
channel mapping.
Entire patch makes code more logical and easier to follow:
1. q6apm-dai and q6apm-lpass-dais code which allocates 'struct
audioreach_module_config' initializes it fully, so fills both
the number of channels and the channel mapping.
2. Audioreach code, which uses 'struct audioreach_module_config' when
constructing packets, copies entire contents of passed config, not
only pieces of it.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
Changes in v4:
1. Rename audioreach_set_channel_mapping -> audioreach_set_default_channel_mapping
Changes in v2:
1. Extend commit msg, rationale.
2. Rework to new approach, but most of the code stays.
3. Export audioreach_set_channel_mapping() (needed by Q6APM DAIS and
LPASS DAIS)
4. Correct channel mapping also in audioreach_mfc_set_media_format(),
because MFC DAI is now part of backend.
5. Do not adjust dynamic DAIs (drop audioreach_dai_load()).
---
sound/soc/qcom/qdsp6/audioreach.c | 30 +++++++-----------------------
sound/soc/qcom/qdsp6/audioreach.h | 1 +
sound/soc/qcom/qdsp6/q6apm-dai.c | 3 +++
sound/soc/qcom/qdsp6/q6apm-lpass-dais.c | 5 ++++-
4 files changed, 15 insertions(+), 24 deletions(-)
diff --git a/sound/soc/qcom/qdsp6/audioreach.c b/sound/soc/qcom/qdsp6/audioreach.c
index 5291deac0a0b..4ebaaf736fb9 100644
--- a/sound/soc/qcom/qdsp6/audioreach.c
+++ b/sound/soc/qcom/qdsp6/audioreach.c
@@ -267,7 +267,7 @@ void *audioreach_alloc_apm_cmd_pkt(int pkt_size, uint32_t opcode, uint32_t token
}
EXPORT_SYMBOL_GPL(audioreach_alloc_apm_cmd_pkt);
-static void audioreach_set_channel_mapping(u8 *ch_map, int num_channels)
+void audioreach_set_default_channel_mapping(u8 *ch_map, int num_channels)
{
if (num_channels == 1) {
ch_map[0] = PCM_CHANNEL_FL;
@@ -281,6 +281,7 @@ static void audioreach_set_channel_mapping(u8 *ch_map, int num_channels)
ch_map[3] = PCM_CHANNEL_RS;
}
}
+EXPORT_SYMBOL_GPL(audioreach_set_default_channel_mapping);
static void apm_populate_container_config(struct apm_container_obj *cfg,
struct audioreach_container *cont)
@@ -819,7 +820,7 @@ static int audioreach_mfc_set_media_format(struct q6apm_graph *graph,
uint32_t num_channels = cfg->num_channels;
int payload_size;
struct gpr_pkt *pkt;
- int rc;
+ int rc, i;
void *p;
payload_size = APM_MFC_CFG_PSIZE(media_format, num_channels) +
@@ -842,18 +843,8 @@ static int audioreach_mfc_set_media_format(struct q6apm_graph *graph,
media_format->sample_rate = cfg->sample_rate;
media_format->bit_width = cfg->bit_width;
media_format->num_channels = cfg->num_channels;
-
- if (num_channels == 1) {
- media_format->channel_mapping[0] = PCM_CHANNEL_FL;
- } else if (num_channels == 2) {
- media_format->channel_mapping[0] = PCM_CHANNEL_FL;
- media_format->channel_mapping[1] = PCM_CHANNEL_FR;
- } else if (num_channels == 4) {
- media_format->channel_mapping[0] = PCM_CHANNEL_FL;
- media_format->channel_mapping[1] = PCM_CHANNEL_FR;
- media_format->channel_mapping[2] = PCM_CHANNEL_LS;
- media_format->channel_mapping[3] = PCM_CHANNEL_RS;
- }
+ for (i = 0; i < num_channels; i++)
+ media_format->channel_mapping[i] = cfg->channel_map[i];
rc = q6apm_send_cmd_sync(graph->apm, pkt, 0);
@@ -883,9 +874,6 @@ static int audioreach_set_compr_media_format(struct media_format *media_fmt_hdr,
mp3_cfg->q_factor = mcfg->bit_width - 1;
mp3_cfg->endianness = PCM_LITTLE_ENDIAN;
mp3_cfg->num_channels = mcfg->num_channels;
-
- audioreach_set_channel_mapping(mp3_cfg->channel_mapping,
- mcfg->num_channels);
break;
case SND_AUDIOCODEC_AAC:
media_fmt_hdr->data_format = DATA_FORMAT_RAW_COMPRESSED;
@@ -1104,9 +1092,7 @@ static int audioreach_pcm_set_media_format(struct q6apm_graph *graph,
media_cfg->num_channels = mcfg->num_channels;
media_cfg->q_factor = mcfg->bit_width - 1;
media_cfg->bits_per_sample = mcfg->bit_width;
-
- audioreach_set_channel_mapping(media_cfg->channel_mapping,
- num_channels);
+ memcpy(media_cfg->channel_mapping, mcfg->channel_map, mcfg->num_channels);
rc = q6apm_send_cmd_sync(graph->apm, pkt, 0);
@@ -1163,9 +1149,7 @@ static int audioreach_shmem_set_media_format(struct q6apm_graph *graph,
cfg->q_factor = mcfg->bit_width - 1;
cfg->endianness = PCM_LITTLE_ENDIAN;
cfg->num_channels = mcfg->num_channels;
-
- audioreach_set_channel_mapping(cfg->channel_mapping,
- num_channels);
+ memcpy(cfg->channel_mapping, mcfg->channel_map, mcfg->num_channels);
} else {
rc = audioreach_set_compr_media_format(header, p, mcfg);
if (rc) {
diff --git a/sound/soc/qcom/qdsp6/audioreach.h b/sound/soc/qcom/qdsp6/audioreach.h
index eb9306280988..61a69df4f50f 100644
--- a/sound/soc/qcom/qdsp6/audioreach.h
+++ b/sound/soc/qcom/qdsp6/audioreach.h
@@ -766,6 +766,7 @@ struct audioreach_module_config {
/* Packet Allocation routines */
void *audioreach_alloc_apm_cmd_pkt(int pkt_size, uint32_t opcode, uint32_t
token);
+void audioreach_set_default_channel_mapping(u8 *ch_map, int num_channels);
void *audioreach_alloc_cmd_pkt(int payload_size, uint32_t opcode,
uint32_t token, uint32_t src_port,
uint32_t dest_port);
diff --git a/sound/soc/qcom/qdsp6/q6apm-dai.c b/sound/soc/qcom/qdsp6/q6apm-dai.c
index 00bbd291be5c..3361c10d69a4 100644
--- a/sound/soc/qcom/qdsp6/q6apm-dai.c
+++ b/sound/soc/qcom/qdsp6/q6apm-dai.c
@@ -243,6 +243,7 @@ static int q6apm_dai_prepare(struct snd_soc_component *component,
cfg.num_channels = runtime->channels;
cfg.bit_width = prtd->bits_per_sample;
cfg.fmt = SND_AUDIOCODEC_PCM;
+ audioreach_set_default_channel_mapping(cfg.channel_map, runtime->channels);
if (prtd->state) {
/* clear the previous setup if any */
@@ -669,6 +670,8 @@ static int q6apm_dai_compr_set_params(struct snd_soc_component *component,
cfg.num_channels = 2;
cfg.bit_width = prtd->bits_per_sample;
cfg.fmt = codec->id;
+ audioreach_set_default_channel_mapping(cfg.channel_map,
+ cfg.num_channels);
memcpy(&cfg.codec, codec, sizeof(*codec));
ret = q6apm_graph_media_format_shmem(prtd->graph, &cfg);
diff --git a/sound/soc/qcom/qdsp6/q6apm-lpass-dais.c b/sound/soc/qcom/qdsp6/q6apm-lpass-dais.c
index a4ad1d0e6abd..ba28ec9dff86 100644
--- a/sound/soc/qcom/qdsp6/q6apm-lpass-dais.c
+++ b/sound/soc/qcom/qdsp6/q6apm-lpass-dais.c
@@ -106,6 +106,7 @@ static int q6hdmi_hw_params(struct snd_pcm_substream *substream,
cfg->bit_width = params_width(params);
cfg->sample_rate = params_rate(params);
cfg->num_channels = channels;
+ audioreach_set_default_channel_mapping(cfg->channel_map, channels);
switch (dai->id) {
case DISPLAY_PORT_RX_0:
@@ -130,10 +131,12 @@ static int q6dma_hw_params(struct snd_pcm_substream *substream,
{
struct q6apm_lpass_dai_data *dai_data = dev_get_drvdata(dai->dev);
struct audioreach_module_config *cfg = &dai_data->module_config[dai->id];
+ int channels = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max;
cfg->bit_width = params_width(params);
cfg->sample_rate = params_rate(params);
- cfg->num_channels = hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max;
+ cfg->num_channels = channels;
+ audioreach_set_default_channel_mapping(cfg->channel_map, channels);
return 0;
}
--
2.43.0
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