[PATCH v12 0/2] Add documentation and machine driver for SC7180 sound card

[PATCH v12 0/2] Add documentation and machine driver for SC7180 sound card

[Cheng-Yi Chiang]

Note:
- The machine driver patch is made by the collaboration of
  Cheng-Yi Chiang <cychiang@chromium.org>
  Rohit kumar <rohitkr@codeaurora.org>
  Ajit Pandey <ajitp@codeaurora.org>
  But Ajit has left codeaurora.

Changes from v1 to v2:
- Ducumentation: Addressed all suggestions from Doug.
- Machine driver:
  - Fix comment style for license.
  - Sort includes.
  - Remove sc7180_snd_hw_params.
  - Remove sc7180_dai_init and use aux device instead for headset jack registration.
  - Statically define format for Primary MI2S.
  - Atomic is not a concern because there is mutex in card to make sure
    startup and shutdown happen sequentially.
  - Fix missing return -EINVAL in startup.
  - Use static sound card.
  - Use devm_kzalloc to avoid kfree.

Changes from v2 to v3:
- Ducumentation: Addressed suggestions from Srini.
- Machine driver:
  - Reuse qcom_snd_parse_of to parse properties.
  - Remove playback-only and capture-only.
  - Misc fixes to address comments.

Changes from v3 to v4:
- Ducumentation: Addressed suggestions from Rob.
 - Remove definition of dai.
 - Use 'sound-dai: true' for sound-dai schema.
 - Add reg property to pass 'make dt_binding_check' check although reg is not used in the driver.
- Machine driver:
 - Add Reviewed-by: Tzung-Bi Shih <tzungbi@google.com>

Changes from v4 to v5:
- Documentation: Addressed suggestions from Rob.
 - Add definition for "#address-cells" and "#size-cells".
 - Add additionalProperties: false
 - Add required properties.

Changes from v5 to v6:
- Documentation: Addressed suggestions from Rob.
 - Drop contains in compatible strings.
 - Only allow dai-link@[0-9]
 - Remove reg ref since it has a type definition already.

Changes from v6 to v7
- Documentation:
  - Add headset-jack and hdmi-jack to specify the codec
    responsible for jack detection.
- HDMI codec driver:
  - Use component set_jack ops instead of exporting hdmi_codec_set_jack_detect.
- Machine driver:
  - Removed aux device following Stephan's suggestion.
  - Use headset-jack and hdmi-jack to specify the codec
    responsible for jack detection.
  - Add support for HDMI(actually DP) playback.

Changes from v7 to v8
- Documentation:
  - Remove headset-jack and hdmi-jack.
- Machine driver:
  - Let machine driver decide whether there is a jack on the DAI.

Changes from v8 to v9
- hdmi-codec driver:
  - Fixed the naming.
- Machine driver:
  - Fixed unused fields.
  - Moved snd_soc_card_set_drvdata
  - Keep the naming of HDMI as dai name until v5 of lpass-hdmi patches.

Changes from v9 to v10
- Documentation:
  - Let compatible string be more specific for board configuration to allow
    for future changes.
- Machine driver:
  - Fixed unused include and macro.
  - Add temporary macro SC7180_LPASS_DP for future change in sc7180-lpass.h.
  - Let sound card be dynamically allocated.
  - Change compatible string accordingly.

Changes from v10 to v11
- Machine driver:
  - Use temporary macro LPASS_DP_RX for future change in sc7180-lpass.h.

Changes from v11 to v12
- Documentation:
 - Change the file and title name for new compatible string google,sc7180-trogdor.
 - Change the example of model name.
- Machine driver:
 - Use the definitaion of index LPASS_DP_RX in sc7180-lpass.h.
 - Fix for compatible string.
 - Replace a comma with semicolon.

Ajit Pandey (1):
  ASoC: qcom: sc7180: Add machine driver for sound card registration

Cheng-Yi Chiang (1):
  ASoC: google: dt-bindings: Add sc7180-trogdor machine bindings

 .../bindings/sound/google,sc7180-trogdor.yaml | 130 +++++++++
 sound/soc/qcom/Kconfig                        |  12 +
 sound/soc/qcom/Makefile                       |   2 +
 sound/soc/qcom/sc7180.c                       | 266 ++++++++++++++++++
 4 files changed, 410 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/google,sc7180-trogdor.yaml
 create mode 100644 sound/soc/qcom/sc7180.c

-- 
2.29.0.rc2.309.g374f81d7ae-goog


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[PATCH v12 1/2] ASoC: google: dt-bindings: Add sc7180-trogdor machine bindings

[Cheng-Yi Chiang]

Add devicetree bindings documentation file for sc7180 sound card.

Signed-off-by: Cheng-Yi Chiang <cychiang@chromium.org>
---
Changes from v11 to v12
- Documentation:
 - Change the file and title name for new compatible string google,sc7180-trogdor.
 - Change the example of model name.

 .../bindings/sound/google,sc7180-trogdor.yaml | 130 ++++++++++++++++++
 1 file changed, 130 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/google,sc7180-trogdor.yaml

diff --git a/Documentation/devicetree/bindings/sound/google,sc7180-trogdor.yaml b/Documentation/devicetree/bindings/sound/google,sc7180-trogdor.yaml
new file mode 100644
index 000000000000..efc34689d6b5
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/google,sc7180-trogdor.yaml
@@ -0,0 +1,130 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/google,sc7180-trogdor.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Google SC7180-Trogdor ASoC sound card driver
+
+maintainers:
+  - Rohit kumar <rohitkr@codeaurora.org>
+  - Cheng-Yi Chiang <cychiang@chromium.org>
+
+description:
+  This binding describes the SC7180 sound card which uses LPASS for audio.
+
+properties:
+  compatible:
+    const: google,sc7180-trogdor
+
+  audio-routing:
+    $ref: /schemas/types.yaml#/definitions/non-unique-string-array
+    description:
+      A list of the connections between audio components. Each entry is a
+      pair of strings, the first being the connection's sink, the second
+      being the connection's source.
+
+  model:
+    $ref: /schemas/types.yaml#/definitions/string
+    description: User specified audio sound card name
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+patternProperties:
+  "^dai-link(@[0-9])?$":
+    description:
+      Each subnode represents a dai link. Subnodes of each dai links would be
+      cpu/codec dais.
+
+    type: object
+
+    properties:
+      link-name:
+        description: Indicates dai-link name and PCM stream name.
+        $ref: /schemas/types.yaml#/definitions/string
+        maxItems: 1
+
+      reg:
+        description: dai link address.
+
+      cpu:
+        description: Holds subnode which indicates cpu dai.
+        type: object
+        properties:
+          sound-dai: true
+
+      codec:
+        description: Holds subnode which indicates codec dai.
+        type: object
+        properties:
+          sound-dai: true
+
+    required:
+      - link-name
+      - cpu
+      - codec
+
+    additionalProperties: false
+
+required:
+  - compatible
+  - model
+  - "#address-cells"
+  - "#size-cells"
+
+additionalProperties: false
+
+examples:
+
+  - |
+    sound {
+        compatible = "google,sc7180-trogdor";
+        model = "sc7180-rt5682-max98357a-1mic";
+
+        audio-routing =
+                    "Headphone Jack", "HPOL",
+                    "Headphone Jack", "HPOR";
+
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        dai-link@0 {
+            link-name = "MultiMedia0";
+            reg = <0>;
+            cpu {
+                sound-dai = <&lpass_cpu 0>;
+            };
+
+            codec {
+                sound-dai = <&alc5682 0>;
+            };
+        };
+
+        dai-link@1 {
+            link-name = "MultiMedia1";
+            reg = <1>;
+            cpu {
+                sound-dai = <&lpass_cpu 1>;
+            };
+
+            codec {
+                sound-dai = <&max98357a>;
+            };
+        };
+
+        dai-link@2 {
+            link-name = "MultiMedia2";
+            reg = <2>;
+            cpu {
+                sound-dai = <&lpass_hdmi 0>;
+            };
+
+            codec {
+                sound-dai = <&msm_dp>;
+            };
+        };
+    };
-- 
2.29.0.rc2.309.g374f81d7ae-goog


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Re: [PATCH v12 1/2] ASoC: google: dt-bindings: Add sc7180-trogdor machine bindings

[Srinivas Kandagatla]

Thanks for doing this!




On 27/10/2020 03:22, Cheng-Yi Chiang wrote:
> Add devicetree bindings documentation file for sc7180 sound card.
> 
> Signed-off-by: Cheng-Yi Chiang <cychiang@chromium.org>

Looks good to me!

Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>


> ---
> Changes from v11 to v12
> - Documentation:
>   - Change the file and title name for new compatible string google,sc7180-trogdor.
>   - Change the example of model name.
> 
>   .../bindings/sound/google,sc7180-trogdor.yaml | 130 ++++++++++++++++++
>   1 file changed, 130 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/sound/google,sc7180-trogdor.yaml
> 
> diff --git a/Documentation/devicetree/bindings/sound/google,sc7180-trogdor.yaml b/Documentation/devicetree/bindings/sound/google,sc7180-trogdor.yaml
> new file mode 100644
> index 000000000000..efc34689d6b5
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/google,sc7180-trogdor.yaml
> @@ -0,0 +1,130 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/sound/google,sc7180-trogdor.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Google SC7180-Trogdor ASoC sound card driver
> +
> +maintainers:
> +  - Rohit kumar <rohitkr@codeaurora.org>
> +  - Cheng-Yi Chiang <cychiang@chromium.org>
> +
> +description:
> +  This binding describes the SC7180 sound card which uses LPASS for audio.
> +
> +properties:
> +  compatible:
> +    const: google,sc7180-trogdor
> +
> +  audio-routing:
> +    $ref: /schemas/types.yaml#/definitions/non-unique-string-array
> +    description:
> +      A list of the connections between audio components. Each entry is a
> +      pair of strings, the first being the connection's sink, the second
> +      being the connection's source.
> +
> +  model:
> +    $ref: /schemas/types.yaml#/definitions/string
> +    description: User specified audio sound card name
> +
> +  "#address-cells":
> +    const: 1
> +
> +  "#size-cells":
> +    const: 0
> +
> +patternProperties:
> +  "^dai-link(@[0-9])?$":
> +    description:
> +      Each subnode represents a dai link. Subnodes of each dai links would be
> +      cpu/codec dais.
> +
> +    type: object
> +
> +    properties:
> +      link-name:
> +        description: Indicates dai-link name and PCM stream name.
> +        $ref: /schemas/types.yaml#/definitions/string
> +        maxItems: 1
> +
> +      reg:
> +        description: dai link address.
> +
> +      cpu:
> +        description: Holds subnode which indicates cpu dai.
> +        type: object
> +        properties:
> +          sound-dai: true
> +
> +      codec:
> +        description: Holds subnode which indicates codec dai.
> +        type: object
> +        properties:
> +          sound-dai: true
> +
> +    required:
> +      - link-name
> +      - cpu
> +      - codec
> +
> +    additionalProperties: false
> +
> +required:
> +  - compatible
> +  - model
> +  - "#address-cells"
> +  - "#size-cells"
> +
> +additionalProperties: false
> +
> +examples:
> +
> +  - |
> +    sound {
> +        compatible = "google,sc7180-trogdor";
> +        model = "sc7180-rt5682-max98357a-1mic";
> +
> +        audio-routing =
> +                    "Headphone Jack", "HPOL",
> +                    "Headphone Jack", "HPOR";
> +
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        dai-link@0 {
> +            link-name = "MultiMedia0";
> +            reg = <0>;
> +            cpu {
> +                sound-dai = <&lpass_cpu 0>;
> +            };
> +
> +            codec {
> +                sound-dai = <&alc5682 0>;
> +            };
> +        };
> +
> +        dai-link@1 {
> +            link-name = "MultiMedia1";
> +            reg = <1>;
> +            cpu {
> +                sound-dai = <&lpass_cpu 1>;
> +            };
> +
> +            codec {
> +                sound-dai = <&max98357a>;
> +            };
> +        };
> +
> +        dai-link@2 {
> +            link-name = "MultiMedia2";
> +            reg = <2>;
> +            cpu {
> +                sound-dai = <&lpass_hdmi 0>;
> +            };
> +
> +            codec {
> +                sound-dai = <&msm_dp>;
> +            };
> +        };
> +    };
> 

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[PATCH v12 2/2] ASoC: qcom: sc7180: Add machine driver for sound card registration

[Cheng-Yi Chiang]

From: Ajit Pandey <ajitp@codeaurora.org>

Add new driver to register sound card on sc7180 trogdor board and
do the required configuration for lpass cpu dai and external codecs
connected over MI2S interfaces.

Signed-off-by: Ajit Pandey <ajitp@codeaurora.org>
Signed-off-by: Cheng-Yi Chiang <cychiang@chromium.org>
---
Changes from v11 to v12
- Machine driver:
 - Use the definitaion of index LPASS_DP_RX in sc7180-lpass.h.
 - Fix compatible string.
 - Replace a comma with semicolon.

 sound/soc/qcom/Kconfig  |  12 ++
 sound/soc/qcom/Makefile |   2 +
 sound/soc/qcom/sc7180.c | 266 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 280 insertions(+)
 create mode 100644 sound/soc/qcom/sc7180.c

diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig
index 484cad31da25..41cb08bd5588 100644
--- a/sound/soc/qcom/Kconfig
+++ b/sound/soc/qcom/Kconfig
@@ -138,4 +138,16 @@ config SND_SOC_SM8250
 	  SM8250 SoC-based systems.
 	  Say Y if you want to use audio device on this SoCs.
 
+config SND_SOC_SC7180
+	tristate "SoC Machine driver for SC7180 boards"
+	depends on I2C
+	select SND_SOC_QCOM_COMMON
+	select SND_SOC_LPASS_SC7180
+	select SND_SOC_MAX98357A
+	select SND_SOC_RT5682_I2C
+	help
+	  To add support for audio on Qualcomm Technologies Inc.
+	  SC7180 SoC-based systems.
+	  Say Y if you want to use audio device on this SoCs.
+
 endif #SND_SOC_QCOM
diff --git a/sound/soc/qcom/Makefile b/sound/soc/qcom/Makefile
index effa4b3f58fa..1600ae55bd34 100644
--- a/sound/soc/qcom/Makefile
+++ b/sound/soc/qcom/Makefile
@@ -18,6 +18,7 @@ obj-$(CONFIG_SND_SOC_LPASS_SC7180) += snd-soc-lpass-sc7180.o
 snd-soc-storm-objs := storm.o
 snd-soc-apq8016-sbc-objs := apq8016_sbc.o
 snd-soc-apq8096-objs := apq8096.o
+snd-soc-sc7180-objs := sc7180.o
 snd-soc-sdm845-objs := sdm845.o
 snd-soc-sm8250-objs := sm8250.o
 snd-soc-qcom-common-objs := common.o
@@ -25,6 +26,7 @@ snd-soc-qcom-common-objs := common.o
 obj-$(CONFIG_SND_SOC_STORM) += snd-soc-storm.o
 obj-$(CONFIG_SND_SOC_APQ8016_SBC) += snd-soc-apq8016-sbc.o
 obj-$(CONFIG_SND_SOC_MSM8996) += snd-soc-apq8096.o
+obj-$(CONFIG_SND_SOC_SC7180) += snd-soc-sc7180.o
 obj-$(CONFIG_SND_SOC_SDM845) += snd-soc-sdm845.o
 obj-$(CONFIG_SND_SOC_SM8250) += snd-soc-sm8250.o
 obj-$(CONFIG_SND_SOC_QCOM_COMMON) += snd-soc-qcom-common.o
diff --git a/sound/soc/qcom/sc7180.c b/sound/soc/qcom/sc7180.c
new file mode 100644
index 000000000000..b391f64c3a80
--- /dev/null
+++ b/sound/soc/qcom/sc7180.c
@@ -0,0 +1,266 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (c) 2020, The Linux Foundation. All rights reserved.
+//
+// sc7180.c -- ALSA SoC Machine driver for SC7180
+
+#include <dt-bindings/sound/sc7180-lpass.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/jack.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <uapi/linux/input-event-codes.h>
+
+#include "../codecs/rt5682.h"
+#include "common.h"
+#include "lpass.h"
+
+#define DEFAULT_MCLK_RATE		19200000
+#define RT5682_PLL1_FREQ (48000 * 512)
+
+#define DRIVER_NAME "SC7180"
+
+struct sc7180_snd_data {
+	struct snd_soc_card card;
+	u32 pri_mi2s_clk_count;
+	struct snd_soc_jack hs_jack;
+	struct snd_soc_jack hdmi_jack;
+};
+
+static void sc7180_jack_free(struct snd_jack *jack)
+{
+	struct snd_soc_component *component = jack->private_data;
+
+	snd_soc_component_set_jack(component, NULL, NULL);
+}
+
+static int sc7180_headset_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_card *card = rtd->card;
+	struct sc7180_snd_data *pdata = snd_soc_card_get_drvdata(card);
+	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+	struct snd_soc_component *component = codec_dai->component;
+	struct snd_jack *jack;
+	int rval;
+
+	rval = snd_soc_card_jack_new(
+			card, "Headset Jack",
+			SND_JACK_HEADSET |
+			SND_JACK_HEADPHONE |
+			SND_JACK_BTN_0 | SND_JACK_BTN_1 |
+			SND_JACK_BTN_2 | SND_JACK_BTN_3,
+			&pdata->hs_jack, NULL, 0);
+
+	if (rval < 0) {
+		dev_err(card->dev, "Unable to add Headset Jack\n");
+		return rval;
+	}
+
+	jack = pdata->hs_jack.jack;
+
+	snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
+	snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
+	snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
+	snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
+
+	jack->private_data = component;
+	jack->private_free = sc7180_jack_free;
+
+	return snd_soc_component_set_jack(component, &pdata->hs_jack, NULL);
+}
+
+static int sc7180_hdmi_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_card *card = rtd->card;
+	struct sc7180_snd_data *pdata = snd_soc_card_get_drvdata(card);
+	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+	struct snd_soc_component *component = codec_dai->component;
+	struct snd_jack *jack;
+	int rval;
+
+	rval = snd_soc_card_jack_new(
+			card, "HDMI Jack",
+			SND_JACK_LINEOUT,
+			&pdata->hdmi_jack, NULL, 0);
+
+	if (rval < 0) {
+		dev_err(card->dev, "Unable to add HDMI Jack\n");
+		return rval;
+	}
+
+	jack = pdata->hdmi_jack.jack;
+	jack->private_data = component;
+	jack->private_free = sc7180_jack_free;
+
+	return snd_soc_component_set_jack(component, &pdata->hdmi_jack, NULL);
+}
+
+static int sc7180_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+
+	switch (cpu_dai->id) {
+	case MI2S_PRIMARY:
+		return sc7180_headset_init(rtd);
+	case MI2S_SECONDARY:
+		return 0;
+	case LPASS_DP_RX:
+		return sc7180_hdmi_init(rtd);
+	default:
+		dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__,
+			cpu_dai->id);
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static int sc7180_snd_startup(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_card *card = rtd->card;
+	struct sc7180_snd_data *data = snd_soc_card_get_drvdata(card);
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+	int ret;
+
+	switch (cpu_dai->id) {
+	case MI2S_PRIMARY:
+		if (++data->pri_mi2s_clk_count == 1) {
+			snd_soc_dai_set_sysclk(cpu_dai,
+					       LPASS_MCLK0,
+					       DEFAULT_MCLK_RATE,
+					       SNDRV_PCM_STREAM_PLAYBACK);
+		}
+
+		snd_soc_dai_set_fmt(codec_dai,
+				    SND_SOC_DAIFMT_CBS_CFS |
+				    SND_SOC_DAIFMT_NB_NF |
+				    SND_SOC_DAIFMT_I2S);
+
+		/* Configure PLL1 for codec */
+		ret = snd_soc_dai_set_pll(codec_dai, 0, RT5682_PLL1_S_MCLK,
+					  DEFAULT_MCLK_RATE, RT5682_PLL1_FREQ);
+		if (ret) {
+			dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
+			return ret;
+		}
+
+		/* Configure sysclk for codec */
+		ret = snd_soc_dai_set_sysclk(codec_dai, RT5682_SCLK_S_PLL1,
+					     RT5682_PLL1_FREQ,
+					     SND_SOC_CLOCK_IN);
+		if (ret)
+			dev_err(rtd->dev, "snd_soc_dai_set_sysclk err = %d\n",
+				ret);
+
+		break;
+	case MI2S_SECONDARY:
+		break;
+	case LPASS_DP_RX:
+		break;
+	default:
+		dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__,
+			cpu_dai->id);
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static void sc7180_snd_shutdown(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_card *card = rtd->card;
+	struct sc7180_snd_data *data = snd_soc_card_get_drvdata(card);
+	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+
+	switch (cpu_dai->id) {
+	case MI2S_PRIMARY:
+		if (--data->pri_mi2s_clk_count == 0) {
+			snd_soc_dai_set_sysclk(cpu_dai,
+					       LPASS_MCLK0,
+					       0,
+					       SNDRV_PCM_STREAM_PLAYBACK);
+		}
+		break;
+	case MI2S_SECONDARY:
+		break;
+	case LPASS_DP_RX:
+		break;
+	default:
+		dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__,
+			cpu_dai->id);
+		break;
+	}
+}
+
+static const struct snd_soc_ops sc7180_ops = {
+	.startup = sc7180_snd_startup,
+	.shutdown = sc7180_snd_shutdown,
+};
+
+static const struct snd_soc_dapm_widget sc7180_snd_widgets[] = {
+	SND_SOC_DAPM_HP("Headphone Jack", NULL),
+	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+};
+
+static void sc7180_add_ops(struct snd_soc_card *card)
+{
+	struct snd_soc_dai_link *link;
+	int i;
+
+	for_each_card_prelinks(card, i, link) {
+		link->ops = &sc7180_ops;
+		link->init = sc7180_init;
+	}
+}
+
+static int sc7180_snd_platform_probe(struct platform_device *pdev)
+{
+	struct snd_soc_card *card;
+	struct sc7180_snd_data *data;
+	struct device *dev = &pdev->dev;
+	int ret;
+
+	/* Allocate the private data */
+	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	card = &data->card;
+	snd_soc_card_set_drvdata(card, data);
+
+	card->owner = THIS_MODULE;
+	card->driver_name = DRIVER_NAME;
+	card->dev = dev;
+	card->dapm_widgets = sc7180_snd_widgets;
+	card->num_dapm_widgets = ARRAY_SIZE(sc7180_snd_widgets);
+
+	ret = qcom_snd_parse_of(card);
+	if (ret)
+		return ret;
+
+	sc7180_add_ops(card);
+
+	return devm_snd_soc_register_card(dev, card);
+}
+
+static const struct of_device_id sc7180_snd_device_id[]  = {
+	{ .compatible = "google,sc7180-trogdor"},
+	{},
+};
+MODULE_DEVICE_TABLE(of, sc7180_snd_device_id);
+
+static struct platform_driver sc7180_snd_driver = {
+	.probe = sc7180_snd_platform_probe,
+	.driver = {
+		.name = "msm-snd-sc7180",
+		.of_match_table = sc7180_snd_device_id,
+	},
+};
+module_platform_driver(sc7180_snd_driver);
+
+MODULE_DESCRIPTION("sc7180 ASoC Machine Driver");
+MODULE_LICENSE("GPL v2");
-- 
2.29.0.rc2.309.g374f81d7ae-goog


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Re: [PATCH v12 2/2] ASoC: qcom: sc7180: Add machine driver for sound card registration

[Srinivas Kandagatla]

On 27/10/2020 03:22, Cheng-Yi Chiang wrote:
> From: Ajit Pandey <ajitp@codeaurora.org>
> 
> Add new driver to register sound card on sc7180 trogdor board and
> do the required configuration for lpass cpu dai and external codecs
> connected over MI2S interfaces.
> 
> Signed-off-by: Ajit Pandey <ajitp@codeaurora.org>
> Signed-off-by: Cheng-Yi Chiang <cychiang@chromium.org>

Looks good to me,

Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

> ---
> Changes from v11 to v12
> - Machine driver:
>   - Use the definitaion of index LPASS_DP_RX in sc7180-lpass.h.
>   - Fix compatible string.
>   - Replace a comma with semicolon.
> 
>   sound/soc/qcom/Kconfig  |  12 ++
>   sound/soc/qcom/Makefile |   2 +
>   sound/soc/qcom/sc7180.c | 266 ++++++++++++++++++++++++++++++++++++++++
>   3 files changed, 280 insertions(+)
>   create mode 100644 sound/soc/qcom/sc7180.c
> 
> diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig
> index 484cad31da25..41cb08bd5588 100644
> --- a/sound/soc/qcom/Kconfig
> +++ b/sound/soc/qcom/Kconfig
> @@ -138,4 +138,16 @@ config SND_SOC_SM8250
>   	  SM8250 SoC-based systems.
>   	  Say Y if you want to use audio device on this SoCs.
>   
> +config SND_SOC_SC7180
> +	tristate "SoC Machine driver for SC7180 boards"
> +	depends on I2C
> +	select SND_SOC_QCOM_COMMON
> +	select SND_SOC_LPASS_SC7180
> +	select SND_SOC_MAX98357A
> +	select SND_SOC_RT5682_I2C
> +	help
> +	  To add support for audio on Qualcomm Technologies Inc.
> +	  SC7180 SoC-based systems.
> +	  Say Y if you want to use audio device on this SoCs.
> +
>   endif #SND_SOC_QCOM
> diff --git a/sound/soc/qcom/Makefile b/sound/soc/qcom/Makefile
> index effa4b3f58fa..1600ae55bd34 100644
> --- a/sound/soc/qcom/Makefile
> +++ b/sound/soc/qcom/Makefile
> @@ -18,6 +18,7 @@ obj-$(CONFIG_SND_SOC_LPASS_SC7180) += snd-soc-lpass-sc7180.o
>   snd-soc-storm-objs := storm.o
>   snd-soc-apq8016-sbc-objs := apq8016_sbc.o
>   snd-soc-apq8096-objs := apq8096.o
> +snd-soc-sc7180-objs := sc7180.o
>   snd-soc-sdm845-objs := sdm845.o
>   snd-soc-sm8250-objs := sm8250.o
>   snd-soc-qcom-common-objs := common.o
> @@ -25,6 +26,7 @@ snd-soc-qcom-common-objs := common.o
>   obj-$(CONFIG_SND_SOC_STORM) += snd-soc-storm.o
>   obj-$(CONFIG_SND_SOC_APQ8016_SBC) += snd-soc-apq8016-sbc.o
>   obj-$(CONFIG_SND_SOC_MSM8996) += snd-soc-apq8096.o
> +obj-$(CONFIG_SND_SOC_SC7180) += snd-soc-sc7180.o
>   obj-$(CONFIG_SND_SOC_SDM845) += snd-soc-sdm845.o
>   obj-$(CONFIG_SND_SOC_SM8250) += snd-soc-sm8250.o
>   obj-$(CONFIG_SND_SOC_QCOM_COMMON) += snd-soc-qcom-common.o
> diff --git a/sound/soc/qcom/sc7180.c b/sound/soc/qcom/sc7180.c
> new file mode 100644
> index 000000000000..b391f64c3a80
> --- /dev/null
> +++ b/sound/soc/qcom/sc7180.c
> @@ -0,0 +1,266 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +//
> +// Copyright (c) 2020, The Linux Foundation. All rights reserved.
> +//
> +// sc7180.c -- ALSA SoC Machine driver for SC7180
> +
> +#include <dt-bindings/sound/sc7180-lpass.h>
> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +#include <linux/platform_device.h>
> +#include <sound/core.h>
> +#include <sound/jack.h>
> +#include <sound/pcm.h>
> +#include <sound/soc.h>
> +#include <uapi/linux/input-event-codes.h>
> +
> +#include "../codecs/rt5682.h"
> +#include "common.h"
> +#include "lpass.h"
> +
> +#define DEFAULT_MCLK_RATE		19200000
> +#define RT5682_PLL1_FREQ (48000 * 512)
> +
> +#define DRIVER_NAME "SC7180"
> +
> +struct sc7180_snd_data {
> +	struct snd_soc_card card;
> +	u32 pri_mi2s_clk_count;
> +	struct snd_soc_jack hs_jack;
> +	struct snd_soc_jack hdmi_jack;
> +};
> +
> +static void sc7180_jack_free(struct snd_jack *jack)
> +{
> +	struct snd_soc_component *component = jack->private_data;
> +
> +	snd_soc_component_set_jack(component, NULL, NULL);
> +}
> +
> +static int sc7180_headset_init(struct snd_soc_pcm_runtime *rtd)
> +{
> +	struct snd_soc_card *card = rtd->card;
> +	struct sc7180_snd_data *pdata = snd_soc_card_get_drvdata(card);
> +	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
> +	struct snd_soc_component *component = codec_dai->component;
> +	struct snd_jack *jack;
> +	int rval;
> +
> +	rval = snd_soc_card_jack_new(
> +			card, "Headset Jack",
> +			SND_JACK_HEADSET |
> +			SND_JACK_HEADPHONE |
> +			SND_JACK_BTN_0 | SND_JACK_BTN_1 |
> +			SND_JACK_BTN_2 | SND_JACK_BTN_3,
> +			&pdata->hs_jack, NULL, 0);
> +
> +	if (rval < 0) {
> +		dev_err(card->dev, "Unable to add Headset Jack\n");
> +		return rval;
> +	}
> +
> +	jack = pdata->hs_jack.jack;
> +
> +	snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
> +	snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
> +	snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
> +	snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
> +
> +	jack->private_data = component;
> +	jack->private_free = sc7180_jack_free;
> +
> +	return snd_soc_component_set_jack(component, &pdata->hs_jack, NULL);
> +}
> +
> +static int sc7180_hdmi_init(struct snd_soc_pcm_runtime *rtd)
> +{
> +	struct snd_soc_card *card = rtd->card;
> +	struct sc7180_snd_data *pdata = snd_soc_card_get_drvdata(card);
> +	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
> +	struct snd_soc_component *component = codec_dai->component;
> +	struct snd_jack *jack;
> +	int rval;
> +
> +	rval = snd_soc_card_jack_new(
> +			card, "HDMI Jack",
> +			SND_JACK_LINEOUT,
> +			&pdata->hdmi_jack, NULL, 0);
> +
> +	if (rval < 0) {
> +		dev_err(card->dev, "Unable to add HDMI Jack\n");
> +		return rval;
> +	}
> +
> +	jack = pdata->hdmi_jack.jack;
> +	jack->private_data = component;
> +	jack->private_free = sc7180_jack_free;
> +
> +	return snd_soc_component_set_jack(component, &pdata->hdmi_jack, NULL);
> +}
> +
> +static int sc7180_init(struct snd_soc_pcm_runtime *rtd)
> +{
> +	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
> +
> +	switch (cpu_dai->id) {
> +	case MI2S_PRIMARY:
> +		return sc7180_headset_init(rtd);
> +	case MI2S_SECONDARY:
> +		return 0;
> +	case LPASS_DP_RX:
> +		return sc7180_hdmi_init(rtd);
> +	default:
> +		dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__,
> +			cpu_dai->id);
> +		return -EINVAL;
> +	}
> +	return 0;
> +}
> +
> +static int sc7180_snd_startup(struct snd_pcm_substream *substream)
> +{
> +	struct snd_soc_pcm_runtime *rtd = substream->private_data;
> +	struct snd_soc_card *card = rtd->card;
> +	struct sc7180_snd_data *data = snd_soc_card_get_drvdata(card);
> +	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
> +	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
> +	int ret;
> +
> +	switch (cpu_dai->id) {
> +	case MI2S_PRIMARY:
> +		if (++data->pri_mi2s_clk_count == 1) {
> +			snd_soc_dai_set_sysclk(cpu_dai,
> +					       LPASS_MCLK0,
> +					       DEFAULT_MCLK_RATE,
> +					       SNDRV_PCM_STREAM_PLAYBACK);
> +		}
> +
> +		snd_soc_dai_set_fmt(codec_dai,
> +				    SND_SOC_DAIFMT_CBS_CFS |
> +				    SND_SOC_DAIFMT_NB_NF |
> +				    SND_SOC_DAIFMT_I2S);
> +
> +		/* Configure PLL1 for codec */
> +		ret = snd_soc_dai_set_pll(codec_dai, 0, RT5682_PLL1_S_MCLK,
> +					  DEFAULT_MCLK_RATE, RT5682_PLL1_FREQ);
> +		if (ret) {
> +			dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
> +			return ret;
> +		}
> +
> +		/* Configure sysclk for codec */
> +		ret = snd_soc_dai_set_sysclk(codec_dai, RT5682_SCLK_S_PLL1,
> +					     RT5682_PLL1_FREQ,
> +					     SND_SOC_CLOCK_IN);
> +		if (ret)
> +			dev_err(rtd->dev, "snd_soc_dai_set_sysclk err = %d\n",
> +				ret);
> +
> +		break;
> +	case MI2S_SECONDARY:
> +		break;
> +	case LPASS_DP_RX:
> +		break;
> +	default:
> +		dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__,
> +			cpu_dai->id);
> +		return -EINVAL;
> +	}
> +	return 0;
> +}
> +
> +static void sc7180_snd_shutdown(struct snd_pcm_substream *substream)
> +{
> +	struct snd_soc_pcm_runtime *rtd = substream->private_data;
> +	struct snd_soc_card *card = rtd->card;
> +	struct sc7180_snd_data *data = snd_soc_card_get_drvdata(card);
> +	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
> +
> +	switch (cpu_dai->id) {
> +	case MI2S_PRIMARY:
> +		if (--data->pri_mi2s_clk_count == 0) {
> +			snd_soc_dai_set_sysclk(cpu_dai,
> +					       LPASS_MCLK0,
> +					       0,
> +					       SNDRV_PCM_STREAM_PLAYBACK);
> +		}
> +		break;
> +	case MI2S_SECONDARY:
> +		break;
> +	case LPASS_DP_RX:
> +		break;
> +	default:
> +		dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__,
> +			cpu_dai->id);
> +		break;
> +	}
> +}
> +
> +static const struct snd_soc_ops sc7180_ops = {
> +	.startup = sc7180_snd_startup,
> +	.shutdown = sc7180_snd_shutdown,
> +};
> +
> +static const struct snd_soc_dapm_widget sc7180_snd_widgets[] = {
> +	SND_SOC_DAPM_HP("Headphone Jack", NULL),
> +	SND_SOC_DAPM_MIC("Headset Mic", NULL),
> +};
> +
> +static void sc7180_add_ops(struct snd_soc_card *card)
> +{
> +	struct snd_soc_dai_link *link;
> +	int i;
> +
> +	for_each_card_prelinks(card, i, link) {
> +		link->ops = &sc7180_ops;
> +		link->init = sc7180_init;
> +	}
> +}
> +
> +static int sc7180_snd_platform_probe(struct platform_device *pdev)
> +{
> +	struct snd_soc_card *card;
> +	struct sc7180_snd_data *data;
> +	struct device *dev = &pdev->dev;
> +	int ret;
> +
> +	/* Allocate the private data */
> +	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
> +	if (!data)
> +		return -ENOMEM;
> +
> +	card = &data->card;
> +	snd_soc_card_set_drvdata(card, data);
> +
> +	card->owner = THIS_MODULE;
> +	card->driver_name = DRIVER_NAME;
> +	card->dev = dev;
> +	card->dapm_widgets = sc7180_snd_widgets;
> +	card->num_dapm_widgets = ARRAY_SIZE(sc7180_snd_widgets);
> +
> +	ret = qcom_snd_parse_of(card);
> +	if (ret)
> +		return ret;
> +
> +	sc7180_add_ops(card);
> +
> +	return devm_snd_soc_register_card(dev, card);
> +}
> +
> +static const struct of_device_id sc7180_snd_device_id[]  = {
> +	{ .compatible = "google,sc7180-trogdor"},
> +	{},
> +};
> +MODULE_DEVICE_TABLE(of, sc7180_snd_device_id);
> +
> +static struct platform_driver sc7180_snd_driver = {
> +	.probe = sc7180_snd_platform_probe,
> +	.driver = {
> +		.name = "msm-snd-sc7180",
> +		.of_match_table = sc7180_snd_device_id,
> +	},
> +};
> +module_platform_driver(sc7180_snd_driver);
> +
> +MODULE_DESCRIPTION("sc7180 ASoC Machine Driver");
> +MODULE_LICENSE("GPL v2");
> 

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Re: [PATCH v12 0/2] Add documentation and machine driver for SC7180 sound card

[Mark Brown]

On Tue, 27 Oct 2020 11:22:32 +0800, Cheng-Yi Chiang wrote:
> Note:
> - The machine driver patch is made by the collaboration of
>   Cheng-Yi Chiang <cychiang@chromium.org>
>   Rohit kumar <rohitkr@codeaurora.org>
>   Ajit Pandey <ajitp@codeaurora.org>
>   But Ajit has left codeaurora.
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/2] ASoC: google: dt-bindings: Add sc7180-trogdor machine bindings
      commit: e158d2d83cab59ec7f4661548627ac171c797c9d
[2/2] ASoC: qcom: sc7180: Add machine driver for sound card registration
      commit: 9e3ecb5b16818abd0bc5f3997cf4d641a710f837

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

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