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Sat, 19 Sep 2026 21:56:58 -0700 (PDT) Received: from [192.168.2.3] ([2403:581e:d87e:0:fc2d:ed31:e80e:412d]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ddc17d712dsm16026765ad.64.2026.09.19.21.56.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 19 Sep 2026 21:56:58 -0700 (PDT) From: James Calligeros Date: Sun, 20 Sep 2026 14:53:51 +1000 Subject: [PATCH 12/28] ASoC: ops: Introduce 'soc_set_enum_kctl' Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Message-Id: <20260920-macaudio-v1-12-741cc20a74e5@gmail.com> References: <20260920-macaudio-v1-0-741cc20a74e5@gmail.com> In-Reply-To: <20260920-macaudio-v1-0-741cc20a74e5@gmail.com> To: =?utf-8?q?Martin_Povi=C5=A1er?= , Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Sven Peter , Janne Grunau , Neal Gompa , David Rhodes , Richard Fitzgerald , Jaroslav Kysela , Takashi Iwai , Ulf Hansson , Amit Kucheria , "Rafael J. Wysocki" , Lars-Peter Clausen , Vinod Koul , Matthias Brugger , AngeloGioacchino Del Regno , Shenghao Ding , Kevin Lu , Baojun Xu , Sen Wang , James Calligeros , James Schulman Cc: asahi@lists.linux.dev, linux-sound@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, patches@opensource.cirrus.com, Takashi Iwai , linux-mediatek@lists.infradead.org X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=3075; i=jcalligeros99@gmail.com; h=from:subject:message-id; bh=ALw7GM6BAIc0MHLkA2EcsPFMi9t4wRSGpPulB3kFXSk=; b=owGbwMvMwCV2xczoYuD3ygTG02pJDFnr0xWYKk3fyLwPOWP4bnLrx6JZ3MlXbuismZzzpHTX6 3LxGCfTjoksDGJcDJZiiiwbmoQ8Zhux3ewXqdwLM4eVCWSItEgDAxCwMPDlJuaVGukY6ZlqG+oZ GukY6xgxcHEKwFTf7GBk2PQ34GexV8erhzy3oqqqFix1cXzjEnblC8NqE4dtJQfP9TH891WtZX0 Tk7ag3Txt7df9e//ssZq+ujZri9HMeyxeITUFvAA= X-Developer-Key: i=jcalligeros99@gmail.com; a=openpgp; fpr=B08212489B3206D98F1479BDD43632D151F77960 From: Martin Povišer The new function is to be used to set enumerated controls to desired values -- either a single control or many controls in bulk by pattern. It is something a machine driver may call in fixup_controls. Signed-off-by: Martin Povišer Signed-off-by: James Calligeros --- include/sound/soc.h | 2 + sound/soc/soc-ops.c | 70 +++++++++++++++++++++++++ 2 files changed, 72 insertions(+) diff --git a/include/sound/soc.h b/include/sound/soc.h index 973ffaf6f060..f356b553227d 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -580,6 +580,8 @@ int snd_soc_limit_volume(struct snd_soc_card *card, const char *name, int max); int snd_soc_deactivate_kctl(struct snd_soc_card *card, const char *name, int active); +int snd_soc_set_enum_kctl(struct snd_soc_card *card, + const char *name, const char *strval); int snd_soc_bytes_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo); int snd_soc_bytes_get(struct snd_kcontrol *kcontrol, diff --git a/sound/soc/soc-ops.c b/sound/soc/soc-ops.c index d35e24df891b..dc27d1c409ab 100644 --- a/sound/soc/soc-ops.c +++ b/sound/soc/soc-ops.c @@ -550,6 +550,76 @@ int snd_soc_deactivate_kctl(struct snd_soc_card *card, } EXPORT_SYMBOL_GPL(snd_soc_deactivate_kctl); +static int soc_set_enum_kctl(struct snd_kcontrol *kctl, const char *strval) +{ + struct snd_ctl_elem_value value; + struct snd_ctl_elem_info info; + int sel, i, ret; + + ret = kctl->info(kctl, &info); + if (ret < 0) + return ret; + + if (info.type != SNDRV_CTL_ELEM_TYPE_ENUMERATED) + return -EINVAL; + + for (sel = 0; sel < info.value.enumerated.items; sel++) { + info.value.enumerated.item = sel; + ret = kctl->info(kctl, &info); + if (ret < 0) + return ret; + + if (!strcmp(strval, info.value.enumerated.name)) + break; + } + + if (sel == info.value.enumerated.items) + return -EINVAL; + + for (i = 0; i < info.count; i++) + value.value.enumerated.item[i] = sel; + + return kctl->put(kctl, &value); +} + +/** + * snd_soc_set_enum_kctl - Set enumerated controls matching a pattern + * + * @card: where to look for the controls + * @name: name pattern + * @value: string value to set the controls to + * + * Return number of matching and set controls on success, else error. + * No controls need to match. + */ +int snd_soc_set_enum_kctl(struct snd_soc_card *card, + const char *name, const char *value) +{ + struct snd_kcontrol *kctl; + int hits = 0; + int ret; + + /* Sanity check for name */ + if (unlikely(!name)) + return -EINVAL; + + list_for_each_entry(kctl, &card->snd_card->controls, list) { + if (!soc_control_matches(kctl, name)) + continue; + + ret = soc_set_enum_kctl(kctl, value); + if (ret < 0) + return ret; + hits++; + } + + if (!hits) + return -EINVAL; + + return hits; +} +EXPORT_SYMBOL_GPL(snd_soc_set_enum_kctl); + int snd_soc_bytes_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { -- 2.55.0