linux-kernel - [PATCH v21 38/39] ASoC: qcom: Populate SoC components string

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240507195116.9464-39-quic_wcheng@quicinc.com>
Date: Tue, 7 May 2024 12:51:15 -0700
From: Wesley Cheng <quic_wcheng@...cinc.com>
To: <srinivas.kandagatla@...aro.org>, <mathias.nyman@...el.com>,
        <perex@...ex.cz>, <conor+dt@...nel.org>, <corbet@....net>,
        <lgirdwood@...il.com>, <andersson@...nel.org>, <krzk+dt@...nel.org>,
        <gregkh@...uxfoundation.org>, <Thinh.Nguyen@...opsys.com>,
        <broonie@...nel.org>, <bgoswami@...cinc.com>, <tiwai@...e.com>,
        <bagasdotme@...il.com>, <robh@...nel.org>, <konrad.dybcio@...aro.org>
CC: <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-sound@...r.kernel.org>, <linux-usb@...r.kernel.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-doc@...r.kernel.org>,
        <alsa-devel@...a-project.org>, Wesley Cheng <quic_wcheng@...cinc.com>
Subject: [PATCH v21 38/39] ASoC: qcom: Populate SoC components string

For userspace to know about certain capabilities of the current platform
card, add tags to the components string that it can use to enable support
for that audio path.  In case of USB offloading, the "usboffldplybk: 1" tag
is added to the string.

Signed-off-by: Wesley Cheng <quic_wcheng@...cinc.com>
---
 sound/soc/qcom/sm8250.c            |  3 +++
 sound/soc/qcom/usb_offload_utils.c | 22 ++++++++++++++++++++++
 sound/soc/qcom/usb_offload_utils.h |  7 +++++++
 3 files changed, 32 insertions(+)

diff --git a/sound/soc/qcom/sm8250.c b/sound/soc/qcom/sm8250.c
index 6f156c94de01..dc17f7fd3a2b 100644
--- a/sound/soc/qcom/sm8250.c
+++ b/sound/soc/qcom/sm8250.c
@@ -39,6 +39,9 @@ static int sm8250_snd_init(struct snd_soc_pcm_runtime *rtd)
 						&data->usb_offload_jack_setup);
 	else
 		ret = qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup);
+
+	qcom_snd_add_components_string(rtd);
+
 	return ret;
 }
 
diff --git a/sound/soc/qcom/usb_offload_utils.c b/sound/soc/qcom/usb_offload_utils.c
index a84394a9b772..2d2ce0687b01 100644
--- a/sound/soc/qcom/usb_offload_utils.c
+++ b/sound/soc/qcom/usb_offload_utils.c
@@ -52,4 +52,26 @@ int qcom_snd_usb_offload_jack_remove(struct snd_soc_pcm_runtime *rtd,
 	return 0;
 }
 EXPORT_SYMBOL_GPL(qcom_snd_usb_offload_jack_remove);
+
+int qcom_snd_add_components_string(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
+	struct snd_soc_card *card = rtd->card;
+	const char *prev = card->components;
+
+	switch (cpu_dai->id) {
+	case USB_RX:
+		card->components = devm_kasprintf(card->dev, GFP_KERNEL, "%s %s",
+					  card->components,
+					  snd_soc_usb_get_components_tag(true));
+	default:
+		break;
+	}
+
+	if (prev && prev != card->components)
+		devm_kfree(card->dev, prev);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(qcom_snd_add_components_string);
 MODULE_LICENSE("GPL");
diff --git a/sound/soc/qcom/usb_offload_utils.h b/sound/soc/qcom/usb_offload_utils.h
index d44f78569b47..814fbfa26d36 100644
--- a/sound/soc/qcom/usb_offload_utils.h
+++ b/sound/soc/qcom/usb_offload_utils.h
@@ -13,6 +13,8 @@ int qcom_snd_usb_offload_jack_setup(struct snd_soc_pcm_runtime *rtd,
 
 int qcom_snd_usb_offload_jack_remove(struct snd_soc_pcm_runtime *rtd,
 					bool *jack_setup);
+
+int qcom_snd_add_components_string(struct snd_soc_pcm_runtime *rtd);
 #else
 static inline int qcom_snd_usb_offload_jack_setup(struct snd_soc_pcm_runtime *rtd,
 			    struct snd_soc_jack *jack, bool *jack_setup)
@@ -25,5 +27,10 @@ static inline int qcom_snd_usb_offload_jack_remove(struct snd_soc_pcm_runtime *r
 {
 	return -ENODEV;
 }
+
+static inline int qcom_snd_add_components_string(struct snd_soc_pcm_runtime *rtd)
+{
+	return -ENODEV;
+}
 #endif /* IS_ENABLED(CONFIG_SND_SOC_QCOM_OFFLOAD_UTILS) */
 #endif /* __QCOM_SND_USB_OFFLOAD_UTILS_H__ */