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[5.157.101.10]) by smtp.gmail.com with ESMTPSA id w25-20020a170906481900b0099bc2d1429csm1288088ejq.72.2023.10.03.08.57.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Oct 2023 08:57:15 -0700 (PDT) From: Krzysztof Kozlowski To: Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai , Srinivas Kandagatla , Banajit Goswami , alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org Cc: Krzysztof Kozlowski Subject: [PATCH 1/2] ASoC: soc-dapm: Add helper for comparing widget name Date: Tue, 3 Oct 2023 17:57:09 +0200 Message-Id: <20231003155710.821315-2-krzysztof.kozlowski@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231003155710.821315-1-krzysztof.kozlowski@linaro.org> References: <20231003155710.821315-1-krzysztof.kozlowski@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Some drivers use one event callback for multiple widgets but still need to perform a bit different actions based on actual widget. This is done by comparing widget name, however drivers tend to miss possible name prefix. Add a helper to solve common mistakes. Signed-off-by: Krzysztof Kozlowski --- include/sound/soc-dapm.h | 1 + sound/soc/soc-component.c | 1 + sound/soc/soc-dapm.c | 12 ++++++++++++ 3 files changed, 14 insertions(+) diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h index d2faec9a323e..433543eb82b9 100644 --- a/include/sound/soc-dapm.h +++ b/include/sound/soc-dapm.h @@ -469,6 +469,7 @@ void snd_soc_dapm_connect_dai_link_widgets(struct snd_s= oc_card *card); =20 int snd_soc_dapm_update_dai(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai); +int snd_soc_dapm_widget_name_cmp(struct snd_soc_dapm_widget *widget, const= char *s); =20 /* dapm path setup */ int snd_soc_dapm_new_widgets(struct snd_soc_card *card); diff --git a/sound/soc/soc-component.c b/sound/soc/soc-component.c index 69198de39e79..4d7c2e3c929a 100644 --- a/sound/soc/soc-component.c +++ b/sound/soc/soc-component.c @@ -242,6 +242,7 @@ int snd_soc_component_notify_control(struct snd_soc_com= ponent *component, char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN]; struct snd_kcontrol *kctl; =20 + /* When updating, change also snd_soc_dapm_widget_name_cmp() */ if (component->name_prefix) snprintf(name, ARRAY_SIZE(name), "%s %s", component->name_prefix, ctl); else diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 2512aadf95f7..8f22ce857f4a 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -2728,6 +2728,18 @@ int snd_soc_dapm_update_dai(struct snd_pcm_substream= *substream, } EXPORT_SYMBOL_GPL(snd_soc_dapm_update_dai); =20 +int snd_soc_dapm_widget_name_cmp(struct snd_soc_dapm_widget *widget, const= char *s) +{ + struct snd_soc_component *component =3D snd_soc_dapm_to_component(widget-= >dapm); + const char *wname =3D widget->name; + + if (component->name_prefix) + wname +=3D strlen(component->name_prefix) + 1; /* plus space */ + + return strcmp(wname, s); +} +EXPORT_SYMBOL_GPL(snd_soc_dapm_widget_name_cmp); + /* * dapm_update_widget_flags() - Re-compute widget sink and source flags * @w: The widget for which to update the flags --=20 2.34.1