From 8167f4f42572818fa8153be2b03e4c2120846603 Mon Sep 17 00:00:00 2001 From: Srinivas Kandagatla Date: Wed, 4 Jun 2025 02:06:48 +0000 Subject: [PATCH 1/3] ASoC: qcom: use drvdata instead of component to keep id Qcom lpass is using component->id to keep DAI ID (A). (S) static int lpass_platform_pcmops_open( sruct snd_soc_component *component, struct snd_pcm_substream *substream) { ^^^^^^^^^(B0) ... (B1) struct snd_soc_pcm_runtime *soc_runtime = snd_soc_substream_to_rtd(substream); (B2) struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(soc_runtime, 0); ... (B3) unsigned int dai_id = cpu_dai->driver->id; (A) component->id = dai_id; ... } This driver can get dai_id from substream (B0 - B3). In this driver, below functions get dai_id from component->id (A). (X) lpass_platform_pcmops_suspend() (Y) lpass_platform_pcmops_resume() (Z) lpass_platform_copy() Here, (Z) can get it from substream (B0 - B3), don't need to use component->id (A). On suspend/resume (X)(Y), dai_id can only be obtained from component->id (A), because there is no substream (B0) in function parameter. But, component->id (A) itself should not be used for such purpose. It is intilialized at snd_soc_component_initialize(), and parsed its ID (= component->id) from device name (a). int snd_soc_component_initialize(...) { ... if (!component->name) { (a) component->name = fmt_single_name(dev, &component->id); ... ^^^^^^^^^^^^^ } ... } Unfortunately, current code is broken to start with. There are many regmaps that the driver cares about, however its only managing one (either dp or i2s) in component suspend/resume path. I2S regmap is mandatory however other regmaps are setup based on flags like "hdmi_port_enable" and "codec_dma_enable". Correct thing for suspend/resume path to handle is by checking these flags, instead of using component->id. Signed-off-by: Srinivas Kandagatla Suggested-by: Kuninori Morimoto Signed-off-by: Kuninori Morimoto Link: https://patch.msgid.link/87a56ouuob.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown --- sound/soc/qcom/lpass-platform.c | 27 +++++++++++++++++---------- 1 file changed, 17 insertions(+), 10 deletions(-) diff --git a/sound/soc/qcom/lpass-platform.c b/sound/soc/qcom/lpass-platform.c index 9946f12254b3..b456e096f138 100644 --- a/sound/soc/qcom/lpass-platform.c +++ b/sound/soc/qcom/lpass-platform.c @@ -202,7 +202,6 @@ static int lpass_platform_pcmops_open(struct snd_soc_component *component, struct regmap *map; unsigned int dai_id = cpu_dai->driver->id; - component->id = dai_id; data = kzalloc(sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; @@ -1190,13 +1189,14 @@ static int lpass_platform_pcmops_suspend(struct snd_soc_component *component) { struct lpass_data *drvdata = snd_soc_component_get_drvdata(component); struct regmap *map; - unsigned int dai_id = component->id; - if (dai_id == LPASS_DP_RX) + if (drvdata->hdmi_port_enable) { map = drvdata->hdmiif_map; - else - map = drvdata->lpaif_map; + regcache_cache_only(map, true); + regcache_mark_dirty(map); + } + map = drvdata->lpaif_map; regcache_cache_only(map, true); regcache_mark_dirty(map); @@ -1207,14 +1207,19 @@ static int lpass_platform_pcmops_resume(struct snd_soc_component *component) { struct lpass_data *drvdata = snd_soc_component_get_drvdata(component); struct regmap *map; - unsigned int dai_id = component->id; + int ret; - if (dai_id == LPASS_DP_RX) + if (drvdata->hdmi_port_enable) { map = drvdata->hdmiif_map; - else - map = drvdata->lpaif_map; + regcache_cache_only(map, false); + ret = regcache_sync(map); + if (ret) + return ret; + } + map = drvdata->lpaif_map; regcache_cache_only(map, false); + return regcache_sync(map); } @@ -1224,7 +1229,9 @@ static int lpass_platform_copy(struct snd_soc_component *component, unsigned long bytes) { struct snd_pcm_runtime *rt = substream->runtime; - unsigned int dai_id = component->id; + struct snd_soc_pcm_runtime *soc_runtime = snd_soc_substream_to_rtd(substream); + struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(soc_runtime, 0); + unsigned int dai_id = cpu_dai->driver->id; int ret = 0; void __iomem *dma_buf = (void __iomem *) (rt->dma_area + pos + From 6ada7351af0c4e295739adfa2c4b780c037b3d27 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Wed, 4 Jun 2025 02:06:57 +0000 Subject: [PATCH 2/3] ASoC: soc-core: save ID if param was set in fmt_single_name() fmt_single_name() requests "ind *id" and not allow NULL for it. But sometimes we don't need it. Allow NULL. Signed-off-by: Kuninori Morimoto Link: https://patch.msgid.link/878qm8uunz.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown --- sound/soc/soc-core.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 67bebc339148..ecea2dddbe9a 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -2604,6 +2604,7 @@ static char *fmt_single_name(struct device *dev, int *id) const char *devname = dev_name(dev); char *found, *name; unsigned int id1, id2; + int __id; if (devname == NULL) return NULL; @@ -2616,10 +2617,10 @@ static char *fmt_single_name(struct device *dev, int *id) found = strstr(name, dev->driver->name); if (found) { /* get ID */ - if (sscanf(&found[strlen(dev->driver->name)], ".%d", id) == 1) { + if (sscanf(&found[strlen(dev->driver->name)], ".%d", &__id) == 1) { /* discard ID from name if ID == -1 */ - if (*id == -1) + if (__id == -1) found[strlen(dev->driver->name)] = '\0'; } @@ -2627,16 +2628,19 @@ static char *fmt_single_name(struct device *dev, int *id) } else if (sscanf(name, "%x-%x", &id1, &id2) == 2) { /* create unique ID number from I2C addr and bus */ - *id = ((id1 & 0xffff) << 16) + id2; + __id = ((id1 & 0xffff) << 16) + id2; devm_kfree(dev, name); /* sanitize component name for DAI link creation */ name = devm_kasprintf(dev, GFP_KERNEL, "%s.%s", dev->driver->name, devname); } else { - *id = 0; + __id = 0; } + if (id) + *id = __id; + return name; } From 267be32b0a7b70cc777f8a46f0904c92c0521d89 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Wed, 4 Jun 2025 02:07:22 +0000 Subject: [PATCH 3/3] ASoC: remove component->id No one is using component->id. One idea is we can re-use it as serial number for component. But we have no usage, so far. Let's just remove it for now. Signed-off-by: Kuninori Morimoto Link: https://patch.msgid.link/877c1suuna.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown --- include/sound/soc-component.h | 1 - sound/soc/soc-core.c | 2 +- 2 files changed, 1 insertion(+), 2 deletions(-) diff --git a/include/sound/soc-component.h b/include/sound/soc-component.h index 61534ac0edd1..2caa807c6249 100644 --- a/include/sound/soc-component.h +++ b/include/sound/soc-component.h @@ -206,7 +206,6 @@ struct snd_soc_component_driver { struct snd_soc_component { const char *name; - int id; const char *name_prefix; struct device *dev; struct snd_soc_card *card; diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index ecea2dddbe9a..cfafdabcdc88 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -2835,7 +2835,7 @@ int snd_soc_component_initialize(struct snd_soc_component *component, mutex_init(&component->io_mutex); if (!component->name) { - component->name = fmt_single_name(dev, &component->id); + component->name = fmt_single_name(dev, NULL); if (!component->name) { dev_err(dev, "ASoC: Failed to allocate name\n"); return -ENOMEM;