Re: [PATCH v2 1/2] ASoC: Intel: maxim-common: get codec number from ACPI
From: Pierre-Louis Bossart
Date: Wed Jul 26 2023 - 04:26:21 EST
On 7/26/23 4:08 PM, Brent Lu wrote:
Implement a helper function to get number of codecs from ACPI
subsystem to remove the need of quirk flag in machine driver.
Signed-off-by: Brent Lu <brent.lu@xxxxxxxxx>
---
sound/soc/intel/boards/sof_maxim_common.c | 171 +++++++++++++---------
sound/soc/intel/boards/sof_maxim_common.h | 21 ++-
2 files changed, 110 insertions(+), 82 deletions(-)
diff --git a/sound/soc/intel/boards/sof_maxim_common.c b/sound/soc/intel/boards/sof_maxim_common.c
index 112e89951da0..1fdd66f5adc2 100644
--- a/sound/soc/intel/boards/sof_maxim_common.c
+++ b/sound/soc/intel/boards/sof_maxim_common.c
@@ -4,6 +4,7 @@
#include <linux/module.h>
#include <linux/string.h>
#include <sound/pcm.h>
+#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-acpi.h>
#include <sound/soc-dai.h>
@@ -11,6 +12,18 @@
#include <uapi/sound/asound.h>
#include "sof_maxim_common.h"
+/* helper function to get the number of specific codec */
+static unsigned int get_num_codecs(const char *hid)
+{
+ struct acpi_device *adev;
+ unsigned int dev_num = 0;
+
+ for_each_acpi_dev_match(adev, hid, NULL, -1)
+ dev_num++;
+
+ return dev_num;
+}
+
#define MAX_98373_PIN_NAME 16
const struct snd_soc_dapm_route max_98373_dapm_routes[] = {
@@ -168,17 +181,6 @@ static struct snd_soc_codec_conf max_98390_codec_conf[] = {
.dlc = COMP_CODEC_CONF(MAX_98390_DEV1_NAME),
.name_prefix = "Left",
},
-};
-
-static struct snd_soc_codec_conf max_98390_4spk_codec_conf[] = {
- {
- .dlc = COMP_CODEC_CONF(MAX_98390_DEV0_NAME),
- .name_prefix = "Right",
- },
- {
- .dlc = COMP_CODEC_CONF(MAX_98390_DEV1_NAME),
- .name_prefix = "Left",
- },
if you remove the codec conf, doesn't this impact the Kcontrols names?
Does this break existing UCM files?
It's rather hard to review with just the diff.
{
.dlc = COMP_CODEC_CONF(MAX_98390_DEV2_NAME),
.name_prefix = "Tweeter Right",
@@ -189,19 +191,7 @@ static struct snd_soc_codec_conf max_98390_4spk_codec_conf[] = {
},
};
-struct snd_soc_dai_link_component max_98390_components[] = {
- {
- .name = MAX_98390_DEV0_NAME,
- .dai_name = MAX_98390_CODEC_DAI,
- },
- {
- .name = MAX_98390_DEV1_NAME,
- .dai_name = MAX_98390_CODEC_DAI,
- },
-};
-EXPORT_SYMBOL_NS(max_98390_components, SND_SOC_INTEL_SOF_MAXIM_COMMON);
-
-struct snd_soc_dai_link_component max_98390_4spk_components[] = {
+static struct snd_soc_dai_link_component max_98390_components[] = {
{
.name = MAX_98390_DEV0_NAME,
.dai_name = MAX_98390_CODEC_DAI,
@@ -219,62 +209,56 @@ struct snd_soc_dai_link_component max_98390_4spk_components[] = {
.dai_name = MAX_98390_CODEC_DAI,
},
};
-EXPORT_SYMBOL_NS(max_98390_4spk_components, SND_SOC_INTEL_SOF_MAXIM_COMMON);
+
+static const struct {
+ unsigned int tx;
+ unsigned int rx;
+} max_98390_tdm_mask[] = {
+ {.tx = 0x01, .rx = 0x3},
+ {.tx = 0x02, .rx = 0x3},
+ {.tx = 0x04, .rx = 0x3},
+ {.tx = 0x08, .rx = 0x3},
+};
static int max_98390_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct snd_soc_dai *codec_dai;
- int i;
+ int i, ret = 0;
for_each_rtd_codec_dais(rtd, i, codec_dai) {
- if (i >= ARRAY_SIZE(max_98390_4spk_components)) {
+ if (i >= ARRAY_SIZE(max_98390_tdm_mask)) {
dev_err(codec_dai->dev, "invalid codec index %d\n", i);
return -ENODEV;
}
- if (!strcmp(codec_dai->component->name, MAX_98390_DEV0_NAME)) {
- /* DEV0 tdm slot configuration Right */
- snd_soc_dai_set_tdm_slot(codec_dai, 0x01, 3, 4, 32);
- }
- if (!strcmp(codec_dai->component->name, MAX_98390_DEV1_NAME)) {
- /* DEV1 tdm slot configuration Left */
- snd_soc_dai_set_tdm_slot(codec_dai, 0x02, 3, 4, 32);
- }
-
- if (!strcmp(codec_dai->component->name, MAX_98390_DEV2_NAME)) {
- /* DEVi2 tdm slot configuration Tweeter Right */
- snd_soc_dai_set_tdm_slot(codec_dai, 0x04, 3, 4, 32);
- }
- if (!strcmp(codec_dai->component->name, MAX_98390_DEV3_NAME)) {
- /* DEV3 tdm slot configuration Tweeter Left */
- snd_soc_dai_set_tdm_slot(codec_dai, 0x08, 3, 4, 32);
+ ret = snd_soc_dai_set_tdm_slot(codec_dai, max_98390_tdm_mask[i].tx,
+ max_98390_tdm_mask[i].rx, 4,
+ params_width(params));
+ if (ret < 0) {
+ dev_err(codec_dai->dev, "fail to set tdm slot, ret %d\n",
+ ret);
+ return ret;
}
}
return 0;
}
-int max_98390_spk_codec_init(struct snd_soc_pcm_runtime *rtd)
+static int max_98390_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_card *card = rtd->card;
+ unsigned int num_codecs = get_num_codecs(MAX_98390_ACPI_HID);
int ret;
- /* add regular speakers dapm route */
- ret = snd_soc_dapm_add_routes(&card->dapm, max_98390_dapm_routes,
- ARRAY_SIZE(max_98390_dapm_routes));
- if (ret) {
- dev_err(rtd->dev, "unable to add Left/Right Speaker dapm, ret %d\n", ret);
- return ret;
- }
-
- /* add widgets/controls/dapm for tweeter speakers */
- if (acpi_dev_present("MX98390", "3", -1)) {
+ switch (num_codecs) {
+ case 4:
+ /* add widgets/controls/dapm for tweeter speakers */
ret = snd_soc_dapm_new_controls(&card->dapm, max_98390_tt_dapm_widgets,
ARRAY_SIZE(max_98390_tt_dapm_widgets));
-
if (ret) {
- dev_err(rtd->dev, "unable to add tweeter dapm controls, ret %d\n", ret);
+ dev_err(rtd->dev, "unable to add tweeter dapm widgets, ret %d\n",
+ ret);
/* Don't need to add routes if widget addition failed */
return ret;
}
@@ -282,33 +266,80 @@ int max_98390_spk_codec_init(struct snd_soc_pcm_runtime *rtd)
ret = snd_soc_add_card_controls(card, max_98390_tt_kcontrols,
ARRAY_SIZE(max_98390_tt_kcontrols));
if (ret) {
- dev_err(rtd->dev, "unable to add tweeter card controls, ret %d\n", ret);
+ dev_err(rtd->dev, "unable to add tweeter controls, ret %d\n",
+ ret);
return ret;
}
ret = snd_soc_dapm_add_routes(&card->dapm, max_98390_tt_dapm_routes,
ARRAY_SIZE(max_98390_tt_dapm_routes));
- if (ret)
- dev_err(rtd->dev,
- "unable to add Tweeter Left/Right Speaker dapm, ret %d\n", ret);
+ if (ret) {
+ dev_err(rtd->dev, "unable to add tweeter dapm routes, ret %d\n",
+ ret);
+ return ret;
+ }
+
+ fallthrough;
+ case 2:
+ /* add regular speakers dapm route */
+ ret = snd_soc_dapm_add_routes(&card->dapm, max_98390_dapm_routes,
+ ARRAY_SIZE(max_98390_dapm_routes));
+ if (ret) {
+ dev_err(rtd->dev, "unable to add dapm routes, ret %d\n",
+ ret);
+ return ret;
+ }
+ break;
+ default:
+ dev_err(rtd->dev, "invalid codec number %d\n", num_codecs);
+ ret = -EINVAL;
+ break;
}
+
return ret;
}
-EXPORT_SYMBOL_NS(max_98390_spk_codec_init, SND_SOC_INTEL_SOF_MAXIM_COMMON);
-const struct snd_soc_ops max_98390_ops = {
+static const struct snd_soc_ops max_98390_ops = {
.hw_params = max_98390_hw_params,
};
-EXPORT_SYMBOL_NS(max_98390_ops, SND_SOC_INTEL_SOF_MAXIM_COMMON);
-void max_98390_set_codec_conf(struct snd_soc_card *card, int ch)
+void max_98390_dai_link(struct snd_soc_dai_link *link)
+{
+ unsigned int num_codecs = get_num_codecs(MAX_98390_ACPI_HID);
+
+ link->codecs = max_98390_components;
+
+ switch (num_codecs) {
+ case 2:
+ case 4:
+ link->num_codecs = num_codecs;
+ break;
+ default:
+ pr_err("invalid codec number %d for %s\n", num_codecs,
+ MAX_98390_ACPI_HID);
+ break;
+ }
+
+ link->init = max_98390_init;
+ link->ops = &max_98390_ops;
+}
+EXPORT_SYMBOL_NS(max_98390_dai_link, SND_SOC_INTEL_SOF_MAXIM_COMMON);
+
+void max_98390_set_codec_conf(struct snd_soc_card *card)
{
- if (ch == ARRAY_SIZE(max_98390_4spk_codec_conf)) {
- card->codec_conf = max_98390_4spk_codec_conf;
- card->num_configs = ARRAY_SIZE(max_98390_4spk_codec_conf);
- } else {
- card->codec_conf = max_98390_codec_conf;
- card->num_configs = ARRAY_SIZE(max_98390_codec_conf);
+ unsigned int num_codecs = get_num_codecs(MAX_98390_ACPI_HID);
+
+ card->codec_conf = max_98390_codec_conf;
+
+ switch (num_codecs) {
+ case 2:
+ case 4:
+ card->num_configs = num_codecs;
+ break;
+ default:
+ pr_err("invalid codec number %d for %s\n", num_codecs,
+ MAX_98390_ACPI_HID);
+ break;
}
}
EXPORT_SYMBOL_NS(max_98390_set_codec_conf, SND_SOC_INTEL_SOF_MAXIM_COMMON);
diff --git a/sound/soc/intel/boards/sof_maxim_common.h b/sound/soc/intel/boards/sof_maxim_common.h
index 7a8c53049e4d..a3676d68cc12 100644
--- a/sound/soc/intel/boards/sof_maxim_common.h
+++ b/sound/soc/intel/boards/sof_maxim_common.h
@@ -27,18 +27,15 @@ int max_98373_trigger(struct snd_pcm_substream *substream, int cmd);
/*
* Maxim MAX98390
*/
-#define MAX_98390_CODEC_DAI "max98390-aif1"
-#define MAX_98390_DEV0_NAME "i2c-MX98390:00"
-#define MAX_98390_DEV1_NAME "i2c-MX98390:01"
-#define MAX_98390_DEV2_NAME "i2c-MX98390:02"
-#define MAX_98390_DEV3_NAME "i2c-MX98390:03"
-
-extern struct snd_soc_dai_link_component max_98390_components[2];
-extern struct snd_soc_dai_link_component max_98390_4spk_components[4];
-extern const struct snd_soc_ops max_98390_ops;
-
-void max_98390_set_codec_conf(struct snd_soc_card *card, int ch);
-int max_98390_spk_codec_init(struct snd_soc_pcm_runtime *rtd);
+#define MAX_98390_ACPI_HID "MX98390"
+#define MAX_98390_CODEC_DAI "max98390-aif1"
+#define MAX_98390_DEV0_NAME "i2c-MX98390:00"
+#define MAX_98390_DEV1_NAME "i2c-MX98390:01"
+#define MAX_98390_DEV2_NAME "i2c-MX98390:02"
+#define MAX_98390_DEV3_NAME "i2c-MX98390:03"
+
+void max_98390_dai_link(struct snd_soc_dai_link *link);
+void max_98390_set_codec_conf(struct snd_soc_card *card);
/*
* Maxim MAX98357A/MAX98360A