ASoc: tas2783A: machine driver amp utility for TI devices

  Machine driver amp utility file to initialize and support
multiple tas2783a devices are added.

Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Niranjan H Y <niranjan.hy@ti.com>
--
v5:
- removed empty line in soc_sdw_ti_amp.c
Link: https://patch.msgid.link/20250912083624.804-3-niranjan.hy@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/include/sound/soc_sdw_utils.h b/include/sound/soc_sdw_utils.h
index 6049a5d0cfcd8e71ca82a4b8f124211db37d0b35..3c5e9b2af7f1a6f73b41c760898c203f5a27811a 100644 (file)
--- a/include/sound/soc_sdw_utils.h
+++ b/include/sound/soc_sdw_utils.h
@@ -248,5 +248,13 @@ int asoc_sdw_cs42l43_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_so
 int asoc_sdw_cs42l43_dmic_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai);
 int asoc_sdw_cs_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai);
 int asoc_sdw_maxim_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai);
+/* TI */
+int asoc_sdw_ti_amp_init(struct snd_soc_card *card,
+                        struct snd_soc_dai_link *dai_links,
+                        struct asoc_sdw_codec_info *info,
+                        bool playback);
+int asoc_sdw_ti_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai);
+int asoc_sdw_ti_amp_initial_settings(struct snd_soc_card *card,
+                                    const char *name_prefix);
 
 #endif

diff --git a/sound/soc/sdw_utils/Makefile b/sound/soc/sdw_utils/Makefile
index daf01911355371462d89734ee2211a4f442b78a9..a87c53e1a2c18e8a7b772e52e3ee3bf03eaa134e 100644 (file)
--- a/sound/soc/sdw_utils/Makefile
+++ b/sound/soc/sdw_utils/Makefile
@@ -6,5 +6,6 @@ snd-soc-sdw-utils-y := soc_sdw_utils.o soc_sdw_dmic.o soc_sdw_rt_dmic.o \
                       soc_sdw_bridge_cs35l56.o                         \
                       soc_sdw_cs42l42.o soc_sdw_cs42l43.o              \
                       soc_sdw_cs_amp.o                                 \
-                      soc_sdw_maxim.o
+                      soc_sdw_maxim.o \
+                      soc_sdw_ti_amp.o
 obj-$(CONFIG_SND_SOC_SDW_UTILS) += snd-soc-sdw-utils.o

diff --git a/sound/soc/sdw_utils/soc_sdw_ti_amp.c b/sound/soc/sdw_utils/soc_sdw_ti_amp.c
new file mode 100644 (file)
index 0000000..f001136
--- /dev/null
+++ b/sound/soc/sdw_utils/soc_sdw_ti_amp.c
@@ -0,0 +1,92 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Copyright (c) 2025 Texas Instruments Inc.
+
+/*
+ *  soc_sdw_ti_amp - Helpers to handle TI's soundwire based codecs
+ */
+
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <sound/soc.h>
+#include <sound/soc-acpi.h>
+#include <sound/soc-dai.h>
+#include <sound/soc_sdw_utils.h>
+
+#define TIAMP_SPK_VOLUME_0DB           200
+
+int asoc_sdw_ti_amp_initial_settings(struct snd_soc_card *card,
+                                    const char *name_prefix)
+{
+       char *volume_ctl_name;
+       int ret;
+
+       volume_ctl_name = kasprintf(GFP_KERNEL, "%s Speaker Volume",
+                                   name_prefix);
+       if (!volume_ctl_name)
+               return -ENOMEM;
+
+       ret = snd_soc_limit_volume(card, volume_ctl_name,
+                                  TIAMP_SPK_VOLUME_0DB);
+       if (ret)
+               dev_err(card->dev,
+                       "%s update failed %d\n",
+                       volume_ctl_name, ret);
+
+       kfree(volume_ctl_name);
+       return 0;
+}
+EXPORT_SYMBOL_NS(asoc_sdw_ti_amp_initial_settings, "SND_SOC_SDW_UTILS");
+
+int asoc_sdw_ti_spk_rtd_init(struct snd_soc_pcm_runtime *rtd,
+                            struct snd_soc_dai *dai)
+{
+       struct snd_soc_card *card = rtd->card;
+       char widget_name[16];
+       char speaker[16];
+       struct snd_soc_dapm_route route = {speaker, NULL, widget_name};
+       struct snd_soc_dai *codec_dai;
+       const char *prefix;
+       int i, ret = 0;
+
+       for_each_rtd_codec_dais(rtd, i, codec_dai) {
+               if (!strstr(codec_dai->name, "tas2783"))
+                       continue;
+
+               prefix = codec_dai->component->name_prefix;
+               if (!strncmp(prefix, "tas2783-1", strlen("tas2783-1"))) {
+                       strscpy(speaker, "Left Spk", sizeof(speaker));
+               } else if (!strncmp(prefix, "tas2783-2", strlen("tas2783-2"))) {
+                       strscpy(speaker, "Right Spk", sizeof(speaker));
+               } else {
+                       ret = -EINVAL;
+                       dev_err(card->dev, "unhandled prefix %s", prefix);
+                       break;
+               }
+
+               snprintf(widget_name, sizeof(widget_name), "%s SPK", prefix);
+               ret = asoc_sdw_ti_amp_initial_settings(card, prefix);
+               if (ret)
+                       return ret;
+
+               ret = snd_soc_dapm_add_routes(&card->dapm, &route, 1);
+               if (ret)
+                       return ret;
+       }
+
+       return ret;
+}
+EXPORT_SYMBOL_NS(asoc_sdw_ti_spk_rtd_init, "SND_SOC_SDW_UTILS");
+
+int asoc_sdw_ti_amp_init(struct snd_soc_card *card,
+                        struct snd_soc_dai_link *dai_links,
+                        struct asoc_sdw_codec_info *info,
+                        bool playback)
+{
+       if (!playback)
+               return 0;
+
+       info->amp_num++;
+
+       return 0;
+}
+EXPORT_SYMBOL_NS(asoc_sdw_ti_amp_init, "SND_SOC_SDW_UTILS");