From 7bda89a2489fb012c4c63f3338827ad1f35c8880 Mon Sep 17 00:00:00 2001 From: Chris Morgan Date: Sat, 15 Feb 2025 11:02:23 +1300 Subject: [PATCH 1/4] ASoC: dt-bindings: sun4i-a10-codec: add hp-det-gpios Devices integrating Allwinner SoCs may use line-out or headphone jacks with jack detection circuits attached to a GPIO. Support defining these in DTs. A number of Anbernic devices featuring the H700 SoC use this mechanism to switch between a headphone jack and an internal speaker, so add these to the allowed routing items. Signed-off-by: Chris Morgan Signed-off-by: Ryan Walklin Reviewed-by: Rob Herring (Arm) -- Changelog v1..v2: - Remove vendor prefix from hp-det-gpios Changelog v2..v3: - Add Reviewed-by tag Reviewed-by: Rob Herring (Arm) Tested-by: Philippe Simons Link: https://patch.msgid.link/20250214220247.10810-2-ryan@testtoast.com Signed-off-by: Mark Brown --- .../bindings/sound/allwinner,sun4i-a10-codec.yaml | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-codec.yaml b/Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-codec.yaml index ccae64ce3071..b4eca702febc 100644 --- a/Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-codec.yaml +++ b/Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-codec.yaml @@ -102,6 +102,10 @@ properties: maxItems: 1 description: GPIO to enable the external amplifier + hp-det-gpios: + maxItems: 1 + description: GPIO for headphone/line-out detection + required: - "#sound-dai-cells" - compatible @@ -251,8 +255,10 @@ allOf: allwinner,audio-routing: items: enum: + - Headphone - LINEOUT - Line Out + - Speaker dmas: items: From ae5f76d4044d1580849316c49290678605e0889d Mon Sep 17 00:00:00 2001 From: Ryan Walklin Date: Sat, 15 Feb 2025 11:02:24 +1300 Subject: [PATCH 2/4] ASoC: sun4i-codec: correct dapm widgets and controls for h616 The previous H616 support patch added a single LINEOUT DAPM pin switch to the card controls. As the codec in this SoC only has a single route, this seemed reasonable at the time, however is redundant given the existing DAPM codec widget definitions controlling the digital and analog sides of the codec. It is also insufficient to describe the scenario where separate components (muxes, jack detection etc) are used to modify the audio route external to the SoC. For example the Anbernic RG(##)XX series of devices uses a headphone jack detection switch, GPIO-controlled speaker amplifier and a passive external mux chip to route audio. Remove the redundant LINEOUT card control, and add a Speaker pin switch control and Headphone DAPM widget to allow control of the above hardware. Signed-off-by: Chris Morgan Signed-off-by: Ryan Walklin Tested-by: Philippe Simons Link: https://patch.msgid.link/20250214220247.10810-3-ryan@testtoast.com Signed-off-by: Mark Brown --- sound/soc/sunxi/sun4i-codec.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sound/soc/sunxi/sun4i-codec.c b/sound/soc/sunxi/sun4i-codec.c index 886b3fa537d2..f24bbefeb392 100644 --- a/sound/soc/sunxi/sun4i-codec.c +++ b/sound/soc/sunxi/sun4i-codec.c @@ -1916,10 +1916,11 @@ static const struct snd_soc_component_driver sun50i_h616_codec_codec = { }; static const struct snd_kcontrol_new sun50i_h616_card_controls[] = { - SOC_DAPM_PIN_SWITCH("LINEOUT"), + SOC_DAPM_PIN_SWITCH("Speaker"), }; static const struct snd_soc_dapm_widget sun50i_h616_codec_card_dapm_widgets[] = { + SND_SOC_DAPM_HP("Headphone", NULL), SND_SOC_DAPM_LINE("Line Out", NULL), SND_SOC_DAPM_SPK("Speaker", sun4i_codec_spk_event), }; From a149377c033afe6557c50892ebbfc0e8b7e2e253 Mon Sep 17 00:00:00 2001 From: Ryan Walklin Date: Sat, 15 Feb 2025 11:02:25 +1300 Subject: [PATCH 3/4] ASoC: sun4i-codec: support hp-det-gpios property Add support for GPIO headphone detection with the hp-det-gpios property. In order for this to properly disable the path upon removal of headphones, the output must be labelled Headphone which is a common sink in the driver. Describe a headphone jack and detection GPIO in the driver, check for a corresponding device tree node, and enable jack detection in a new machine init function if described. Signed-off-by: Chris Morgan Signed-off-by: Ryan Walklin -- Changelog v1..v2: - Separate DAPM changes into separate patch and add rationale. Tested-by: Philippe Simons Link: https://patch.msgid.link/20250214220247.10810-4-ryan@testtoast.com Signed-off-by: Mark Brown --- sound/soc/sunxi/sun4i-codec.c | 53 +++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/sound/soc/sunxi/sun4i-codec.c b/sound/soc/sunxi/sun4i-codec.c index f24bbefeb392..3701f56c7275 100644 --- a/sound/soc/sunxi/sun4i-codec.c +++ b/sound/soc/sunxi/sun4i-codec.c @@ -22,6 +22,7 @@ #include #include +#include #include #include #include @@ -331,6 +332,7 @@ struct sun4i_codec { struct clk *clk_module; struct reset_control *rst; struct gpio_desc *gpio_pa; + struct gpio_desc *gpio_hp; /* ADC_FIFOC register is at different offset on different SoCs */ struct regmap_field *reg_adc_fifoc; @@ -1583,6 +1585,49 @@ static struct snd_soc_dai_driver dummy_cpu_dai = { .ops = &dummy_dai_ops, }; +static struct snd_soc_jack sun4i_headphone_jack; + +static struct snd_soc_jack_pin sun4i_headphone_jack_pins[] = { + { .pin = "Headphone", .mask = SND_JACK_HEADPHONE }, +}; + +static struct snd_soc_jack_gpio sun4i_headphone_jack_gpio = { + .name = "hp-det", + .report = SND_JACK_HEADPHONE, + .debounce_time = 150, +}; + +static int sun4i_codec_machine_init(struct snd_soc_pcm_runtime *rtd) +{ + struct snd_soc_card *card = rtd->card; + struct sun4i_codec *scodec = snd_soc_card_get_drvdata(card); + int ret; + + if (scodec->gpio_hp) { + ret = snd_soc_card_jack_new_pins(card, "Headphone Jack", + SND_JACK_HEADPHONE, + &sun4i_headphone_jack, + sun4i_headphone_jack_pins, + ARRAY_SIZE(sun4i_headphone_jack_pins)); + if (ret) { + dev_err(rtd->dev, + "Headphone jack creation failed: %d\n", ret); + return ret; + } + + sun4i_headphone_jack_gpio.desc = scodec->gpio_hp; + ret = snd_soc_jack_add_gpios(&sun4i_headphone_jack, 1, + &sun4i_headphone_jack_gpio); + + if (ret) { + dev_err(rtd->dev, "Headphone GPIO not added: %d\n", ret); + return ret; + } + } + + return 0; +} + static struct snd_soc_dai_link *sun4i_codec_create_link(struct device *dev, int *num_links) { @@ -1608,6 +1653,7 @@ static struct snd_soc_dai_link *sun4i_codec_create_link(struct device *dev, link->codecs->name = dev_name(dev); link->platforms->name = dev_name(dev); link->dai_fmt = SND_SOC_DAIFMT_I2S; + link->init = sun4i_codec_machine_init; *num_links = 1; @@ -2302,6 +2348,13 @@ static int sun4i_codec_probe(struct platform_device *pdev) return ret; } + scodec->gpio_hp = devm_gpiod_get_optional(&pdev->dev, "hp-det", GPIOD_IN); + if (IS_ERR(scodec->gpio_hp)) { + ret = PTR_ERR(scodec->gpio_hp); + dev_err_probe(&pdev->dev, ret, "Failed to get hp-det gpio\n"); + return ret; + } + /* reg_field setup */ scodec->reg_adc_fifoc = devm_regmap_field_alloc(&pdev->dev, scodec->regmap, From d389719fb4ece17ea28c0cf908066815d3ab0e25 Mon Sep 17 00:00:00 2001 From: Ryan Walklin Date: Sat, 15 Feb 2025 11:02:27 +1300 Subject: [PATCH 4/4] ASoC: sun4i-codec: add h616 card long_name Adding jack detection requires sound servers to act on the emitted events, which are described by ALSA Use Case Manager configurations in userspace. These configurations include the long card name in the file path (falling back to card->name if this is not present), so add a long card name for the H616 without spaces, making UCM referencing easier. The corresponding ALSA UCM patch is here (now merged): https://github.com/alsa-project/alsa-ucm-conf/pull/491 Signed-off-by: Ryan Walklin -- Changelog v1..v2: - Separate patch for card->long_name - Note UCM patch link Changelog v2..v3: - Add card->long_name rather than change existing card->name Link: https://patch.msgid.link/20250214220247.10810-6-ryan@testtoast.com Signed-off-by: Mark Brown --- sound/soc/sunxi/sun4i-codec.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/soc/sunxi/sun4i-codec.c b/sound/soc/sunxi/sun4i-codec.c index 3701f56c7275..93733ff2e32a 100644 --- a/sound/soc/sunxi/sun4i-codec.c +++ b/sound/soc/sunxi/sun4i-codec.c @@ -2013,6 +2013,7 @@ static struct snd_soc_card *sun50i_h616_codec_create_card(struct device *dev) card->dev = dev; card->owner = THIS_MODULE; card->name = "H616 Audio Codec"; + card->long_name = "h616-audio-codec"; card->driver_name = "sun4i-codec"; card->controls = sun50i_h616_card_controls; card->num_controls = ARRAY_SIZE(sun50i_h616_card_controls);