May 2018 - Alsa-devel - mailman.alsa-project.org

[alsa-devel] [PATCH v2 0/2] ASoC: omap: sdma-pcm: modpost warning fix and include cleanup
by Peter Ujfalusi 17 May '18

17 May '18

Hi, Changes since v1: - Changed the MODULE_LICENSE from "GPL" to "GPL v2" to match the SPDX line. Since the sdma-pcm can be built as module it must have MODULE_LICENSE defined, whcih I have missed: After merging the sound-asoc tree, today's linux-next build (x86_64 allmodconfig) produced this warning: WARNING: modpost: missing MODULE_LICENSE() in sound/soc/omap/snd-soc-sdma.o see include/linux/module.h for more information WARNING: modpost: missing MODULE_LICENSE() in sound/soc/omap/snd-soc-sdma.o see include/linux/module.h for more information The first patch also going to fix runtime issue with module loading: snd_soc_sdma: Unknown symbol devm_kmalloc (err 0) snd_soc_sdma: Unknown symbol omap_dma_filter_fn (err 0) snd_soc_sdma: Unknown symbol snd_dmaengine_pcm_prepare_slave_config (err 0) snd_soc_sdma: Unknown symbol devm_snd_dmaengine_pcm_register (err 0) As these symbols are EXPORT_SYMBOL_GPL()... Introduced by commit dde637f2daf1 ("ASoC: omap: Introduce the generic_dmaengine_pcm based sdma-pcm") The second patch is kust a small adjustement for the include files. Regards, Peter --- Peter Ujfalusi (2): ASoC: omap: sdma-pcm: Fix modpost warning ASoC: omap: sdma-pcm: Correction for the include files sound/soc/omap/sdma-pcm.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) -- Peter Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

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[alsa-devel] [PATCH 0/2] ASoC: omap: sdma-pcm: modpost warning fix and include cleanup
by Peter Ujfalusi 17 May '18

17 May '18

Hi, Since the sdma-pcm can be built as module it must have MODULE_LICENSE defined, whcih I have missed: After merging the sound-asoc tree, today's linux-next build (x86_64 allmodconfig) produced this warning: WARNING: modpost: missing MODULE_LICENSE() in sound/soc/omap/snd-soc-sdma.o see include/linux/module.h for more information WARNING: modpost: missing MODULE_LICENSE() in sound/soc/omap/snd-soc-sdma.o see include/linux/module.h for more information Introduced by commit dde637f2daf1 ("ASoC: omap: Introduce the generic_dmaengine_pcm based sdma-pcm") The second patch is kust a small adjustement for the include files. Regards, Peter --- Peter Ujfalusi (2): ASoC: omap: sdma-pcm: Fix modpost warning ASoC: omap: sdma-pcm: Correction for the include files sound/soc/omap/sdma-pcm.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) -- Peter Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

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[alsa-devel] [PATCH] ASoC: rt5663: Use the set_jack() instead of the export function
by Oder Chiou 17 May '18

17 May '18

The patch replaces the export function with the new API set_jack(). Signed-off-by: Oder Chiou <oder_chiou(a)realtek.com> --- sound/soc/codecs/rt5663.c | 5 ++--- sound/soc/codecs/rt5663.h | 2 -- sound/soc/intel/boards/kbl_rt5663_max98927.c | 3 ++- sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c | 2 +- 4 files changed, 5 insertions(+), 7 deletions(-) diff --git a/sound/soc/codecs/rt5663.c b/sound/soc/codecs/rt5663.c index f0cef52..eefa918 100644 --- a/sound/soc/codecs/rt5663.c +++ b/sound/soc/codecs/rt5663.c @@ -1857,7 +1857,7 @@ static irqreturn_t rt5663_irq(int irq, void *data) } int rt5663_set_jack_detect(struct snd_soc_component *component, - struct snd_soc_jack *hs_jack) + struct snd_soc_jack *hs_jack, void *data) { struct rt5663_priv *rt5663 = snd_soc_component_get_drvdata(component); @@ -1867,7 +1867,6 @@ int rt5663_set_jack_detect(struct snd_soc_component *component, return 0; } -EXPORT_SYMBOL_GPL(rt5663_set_jack_detect); static bool rt5663_check_jd_status(struct snd_soc_component *component) { @@ -3244,10 +3243,10 @@ static const struct snd_soc_component_driver soc_component_dev_rt5663 = { .num_dapm_widgets = ARRAY_SIZE(rt5663_dapm_widgets), .dapm_routes = rt5663_dapm_routes, .num_dapm_routes = ARRAY_SIZE(rt5663_dapm_routes), + .set_jack = rt5663_set_jack_detect, .use_pmdown_time = 1, .endianness = 1, .non_legacy_dai_naming = 1, - }; static const struct regmap_config rt5663_v2_regmap = { diff --git a/sound/soc/codecs/rt5663.h b/sound/soc/codecs/rt5663.h index 865203c..794cf3f 100644 --- a/sound/soc/codecs/rt5663.h +++ b/sound/soc/codecs/rt5663.h @@ -1125,8 +1125,6 @@ enum { RT5663_AD_STEREO_FILTER = 0x2, }; -int rt5663_set_jack_detect(struct snd_soc_component *component, - struct snd_soc_jack *hs_jack); int rt5663_sel_asrc_clk_src(struct snd_soc_component *component, unsigned int filter_mask, unsigned int clk_src); diff --git a/sound/soc/intel/boards/kbl_rt5663_max98927.c b/sound/soc/intel/boards/kbl_rt5663_max98927.c index 513cc65..3a61252 100644 --- a/sound/soc/intel/boards/kbl_rt5663_max98927.c +++ b/sound/soc/intel/boards/kbl_rt5663_max98927.c @@ -299,7 +299,8 @@ static int kabylake_rt5663_codec_init(struct snd_soc_pcm_runtime *rtd) snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEUP); snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN); - rt5663_set_jack_detect(component, &ctx->kabylake_headset); + snd_soc_component_set_jack(component, &ctx->kabylake_headset, NULL); + return ret; } diff --git a/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c b/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c index e8382d6..92f5fb2 100644 --- a/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c +++ b/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c @@ -200,7 +200,7 @@ static int kabylake_rt5663_codec_init(struct snd_soc_pcm_runtime *rtd) snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEUP); snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN); - rt5663_set_jack_detect(component, &ctx->kabylake_headset); + snd_soc_component_set_jack(component, &ctx->kabylake_headset, NULL); ret = snd_soc_dapm_ignore_suspend(&rtd->card->dapm, "DMIC"); if (ret) -- 2.7.4

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[alsa-devel] [PATCH v3 00/10] ASoC: rt5640: Add jack-detect and button-press support
by Hans de Goede 17 May '18

17 May '18

Hi Mark, et. al., Here is v3 of the remaining patches from my rt5640 jack-detect series. This time this is really based on your sound/for-next branch, so this should apply cleanly now. As mentioned with v2 I've also added a quirk for one more device to the: "ASoC: Intel: bytcr_rt5640: Add quirks for various devices" patch. Other then that there are no changes. Regards, Hans

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[alsa-devel] [PATCH v2 00/10] ASoC: rt5640: Add jack-detect and button-press support
by Hans de Goede 17 May '18

17 May '18

Hi Mark, et. al., Here is v2 of the remaining patches from my rt5640 jack-detect series. As requested this is rebased on your sound/for-next branch, so this should apply cleanly now. I also added a quirk for one more device to the: "ASoC: Intel: bytcr_rt5640: Add quirks for various devices" patch. Other then that there are no changes. Regards, Hans

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[alsa-devel] [PATCH 0/1] Handling of serializers
by Vishal Thanki 17 May '18

17 May '18

On a custom AM33xx based platform, we use 4 channels for audio output (2 * Left/Right) by making use of two TX serializers. The audio input path only uses 2 channels, hence one RX serializer. If the recording is started before the playback, the playback cannot make use of all 4 channels because of the imposed max number of channels by recording. And if playback is started before recording, the hw_params set during recording stream would disable an active TX serializer which causes audio distortion. I have tried to fix this unwanted behavior in following patch. Please comment if this should be done differently. Vishal Thanki (1): ASoC: davinci-mcasp: Only disable inactive serializer sound/soc/davinci/davinci-mcasp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 2.14.3

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[alsa-devel] [PATCH v2] ASoC: ssm2305: Add amplifier driver
by Marco Felsch 17 May '18

17 May '18

The ssm2305 is a simple Class-D audio amplifier. A application can turn on/off the device by a gpio. It's also possible to hardwire the shutdown pin. Tested on a i.MX6 based custom board. Signed-off-by: Marco Felsch <m.felsch(a)pengutronix.de> --- Notes (changelog): v2: - fix copyright information - rename shutdown gpio and add some more documentation - mark shutdown gpio as required - rm registration information .../devicetree/bindings/sound/adi,ssm2305.txt | 14 +++ sound/soc/codecs/Kconfig | 7 ++ sound/soc/codecs/Makefile | 2 + sound/soc/codecs/ssm2305.c | 105 ++++++++++++++++++ 4 files changed, 128 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/adi,ssm2305.txt create mode 100644 sound/soc/codecs/ssm2305.c diff --git a/Documentation/devicetree/bindings/sound/adi,ssm2305.txt b/Documentation/devicetree/bindings/sound/adi,ssm2305.txt new file mode 100644 index 000000000000..a9c9d83c8a30 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/adi,ssm2305.txt @@ -0,0 +1,14 @@ +Analog Devices SSM2305 Speaker Amplifier +======================================== + +Required properties: + - compatible : "adi,ssm2305" + - shutdown-gpios : The gpio connected to the shutdown pin. + The gpio signal is ACTIVE_LOW. + +Example: + +ssm2305: analog-amplifier { + compatible = "adi,ssm2305"; + shutdown-gpios = <&gpio3 20 GPIO_ACTIVE_LOW>; +}; diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index 9548f63ca531..d81b0cb291a3 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -142,6 +142,7 @@ config SND_SOC_ALL_CODECS select SND_SOC_SI476X if MFD_SI476X_CORE select SND_SOC_SIRF_AUDIO_CODEC select SND_SOC_SPDIF + select SND_SOC_SSM2305 select SND_SOC_SSM2518 if I2C select SND_SOC_SSM2602_SPI if SPI_MASTER select SND_SOC_SSM2602_I2C if I2C @@ -883,6 +884,12 @@ config SND_SOC_SIRF_AUDIO_CODEC config SND_SOC_SPDIF tristate "S/PDIF CODEC" +config SND_SOC_SSM2305 + tristate "Analog Devices SSM2305 Class-D Amplifier" + help + Enable support for Analog Devices SSM2305 filterless + high-efficiency mono Class-D audio power amplifiers. + config SND_SOC_SSM2518 tristate diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index e849d1495308..7d75ac8f6716 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -153,6 +153,7 @@ snd-soc-si476x-objs := si476x.o snd-soc-sirf-audio-codec-objs := sirf-audio-codec.o snd-soc-spdif-tx-objs := spdif_transmitter.o snd-soc-spdif-rx-objs := spdif_receiver.o +snd-soc-ssm2305-objs := ssm2305.o snd-soc-ssm2518-objs := ssm2518.o snd-soc-ssm2602-objs := ssm2602.o snd-soc-ssm2602-spi-objs := ssm2602-spi.o @@ -404,6 +405,7 @@ obj-$(CONFIG_SND_SOC_SIGMADSP_REGMAP) += snd-soc-sigmadsp-regmap.o obj-$(CONFIG_SND_SOC_SI476X) += snd-soc-si476x.o obj-$(CONFIG_SND_SOC_SPDIF) += snd-soc-spdif-rx.o snd-soc-spdif-tx.o obj-$(CONFIG_SND_SOC_SIRF_AUDIO_CODEC) += sirf-audio-codec.o +obj-$(CONFIG_SND_SOC_SSM2305) += snd-soc-ssm2305.o obj-$(CONFIG_SND_SOC_SSM2518) += snd-soc-ssm2518.o obj-$(CONFIG_SND_SOC_SSM2602) += snd-soc-ssm2602.o obj-$(CONFIG_SND_SOC_SSM2602_SPI) += snd-soc-ssm2602-spi.o diff --git a/sound/soc/codecs/ssm2305.c b/sound/soc/codecs/ssm2305.c new file mode 100644 index 000000000000..06ff649a1fd2 --- /dev/null +++ b/sound/soc/codecs/ssm2305.c @@ -0,0 +1,105 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Analog Devices SSM2305 Amplifier Driver + * + * Copyright (C) 2018 Pengutronix, Marco Felsch <kernel(a)pengutronix.de> + */ + +#include <linux/gpio/consumer.h> +#include <linux/module.h> +#include <sound/soc.h> + +#define DRV_NAME "ssm2305" + +struct ssm2305 { + /* shutdown gpio */ + struct gpio_desc *gpiod_shutdown; +}; + +static int ssm2305_power_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kctrl, int event) +{ + struct snd_soc_component *c = snd_soc_dapm_to_component(w->dapm); + struct ssm2305 *data = snd_soc_component_get_drvdata(c); + + gpiod_set_value_cansleep(data->gpiod_shutdown, + SND_SOC_DAPM_EVENT_ON(event)); + + return 0; +} + +static const struct snd_soc_dapm_widget ssm2305_dapm_widgets[] = { + /* Stereo input/output */ + SND_SOC_DAPM_INPUT("L_IN"), + SND_SOC_DAPM_INPUT("R_IN"), + SND_SOC_DAPM_OUTPUT("L_OUT"), + SND_SOC_DAPM_OUTPUT("R_OUT"), + + SND_SOC_DAPM_SUPPLY("Power", SND_SOC_NOPM, 0, 0, ssm2305_power_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), +}; + +static const struct snd_soc_dapm_route ssm2305_dapm_routes[] = { + { "L_OUT", NULL, "L_IN" }, + { "R_OUT", NULL, "R_IN" }, + { "L_IN", NULL, "Power" }, + { "R_IN", NULL, "Power" }, +}; + +static const struct snd_soc_component_driver ssm2305_component_driver = { + .dapm_widgets = ssm2305_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(ssm2305_dapm_widgets), + .dapm_routes = ssm2305_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(ssm2305_dapm_routes), +}; + +static int ssm2305_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct ssm2305 *priv; + int err; + + /* Allocate the private data */ + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + platform_set_drvdata(pdev, priv); + + /* Get shutdown gpio */ + priv->gpiod_shutdown = devm_gpiod_get(dev, "shutdown", + GPIOD_OUT_LOW); + if (IS_ERR(priv->gpiod_shutdown)) { + err = PTR_ERR(priv->gpiod_shutdown); + if (err != -EPROBE_DEFER) { + dev_err(dev, "Failed to get 'shutdown' gpio: %d\n", + err); + return err; + } + } + + return devm_snd_soc_register_component(dev, &ssm2305_component_driver, + NULL, 0); +} + +#ifdef CONFIG_OF +static const struct of_device_id ssm2305_of_match[] = { + { .compatible = "adi,ssm2305", }, + { } +}; +MODULE_DEVICE_TABLE(of, ssm2305_of_match); +#endif + +static struct platform_driver ssm2305_driver = { + .driver = { + .name = DRV_NAME, + .of_match_table = of_match_ptr(ssm2305_of_match), + }, + .probe = ssm2305_probe, +}; + +module_platform_driver(ssm2305_driver); + +MODULE_DESCRIPTION("ASoC SSM2305 amplifier driver"); +MODULE_AUTHOR("Marco Felsch <m.felsch(a)pengutronix.de>"); +MODULE_LICENSE("GPL v2"); -- 2.17.0

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[alsa-devel] [PATCH] ASoC: ssm2305: Add amplifier driver
by Marco Felsch 17 May '18

17 May '18

The ssm2305 is a simple Class-D audio amplifier. A application can turn on/off the device by a gpio. It's also possible to hardwire the shutdown pin. Tested on a i.MX6 based custom board. Signed-off-by: Marco Felsch <m.felsch(a)pengutronix.de> --- .../devicetree/bindings/sound/adi,ssm2305.txt | 15 +++ sound/soc/codecs/Kconfig | 7 ++ sound/soc/codecs/Makefile | 2 + sound/soc/codecs/ssm2305.c | 105 ++++++++++++++++++ 4 files changed, 129 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/adi,ssm2305.txt create mode 100644 sound/soc/codecs/ssm2305.c diff --git a/Documentation/devicetree/bindings/sound/adi,ssm2305.txt b/Documentation/devicetree/bindings/sound/adi,ssm2305.txt new file mode 100644 index 000000000000..fc4c99225538 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/adi,ssm2305.txt @@ -0,0 +1,15 @@ +Analog Devices SSM2305 Speaker Amplifier +======================================== + +Required properties: + - compatible : "adi,ssm2305" + +Optional properties: + - ssm2305,shutdown-gpio : the gpio connected to the shutdown pin + +Example: + +ssm2305: analog-amplifier { + compatible = "adi,ssm2305"; + ssm2305,shutdown-gpio = <&gpio3 20 GPIO_ACTIVE_LOW>; +}; diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index 9548f63ca531..d81b0cb291a3 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -142,6 +142,7 @@ config SND_SOC_ALL_CODECS select SND_SOC_SI476X if MFD_SI476X_CORE select SND_SOC_SIRF_AUDIO_CODEC select SND_SOC_SPDIF + select SND_SOC_SSM2305 select SND_SOC_SSM2518 if I2C select SND_SOC_SSM2602_SPI if SPI_MASTER select SND_SOC_SSM2602_I2C if I2C @@ -883,6 +884,12 @@ config SND_SOC_SIRF_AUDIO_CODEC config SND_SOC_SPDIF tristate "S/PDIF CODEC" +config SND_SOC_SSM2305 + tristate "Analog Devices SSM2305 Class-D Amplifier" + help + Enable support for Analog Devices SSM2305 filterless + high-efficiency mono Class-D audio power amplifiers. + config SND_SOC_SSM2518 tristate diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index e849d1495308..7d75ac8f6716 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -153,6 +153,7 @@ snd-soc-si476x-objs := si476x.o snd-soc-sirf-audio-codec-objs := sirf-audio-codec.o snd-soc-spdif-tx-objs := spdif_transmitter.o snd-soc-spdif-rx-objs := spdif_receiver.o +snd-soc-ssm2305-objs := ssm2305.o snd-soc-ssm2518-objs := ssm2518.o snd-soc-ssm2602-objs := ssm2602.o snd-soc-ssm2602-spi-objs := ssm2602-spi.o @@ -404,6 +405,7 @@ obj-$(CONFIG_SND_SOC_SIGMADSP_REGMAP) += snd-soc-sigmadsp-regmap.o obj-$(CONFIG_SND_SOC_SI476X) += snd-soc-si476x.o obj-$(CONFIG_SND_SOC_SPDIF) += snd-soc-spdif-rx.o snd-soc-spdif-tx.o obj-$(CONFIG_SND_SOC_SIRF_AUDIO_CODEC) += sirf-audio-codec.o +obj-$(CONFIG_SND_SOC_SSM2305) += snd-soc-ssm2305.o obj-$(CONFIG_SND_SOC_SSM2518) += snd-soc-ssm2518.o obj-$(CONFIG_SND_SOC_SSM2602) += snd-soc-ssm2602.o obj-$(CONFIG_SND_SOC_SSM2602_SPI) += snd-soc-ssm2602-spi.o diff --git a/sound/soc/codecs/ssm2305.c b/sound/soc/codecs/ssm2305.c new file mode 100644 index 000000000000..ce8d5a18c329 --- /dev/null +++ b/sound/soc/codecs/ssm2305.c @@ -0,0 +1,105 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Analog Devices SSM2305 Amplifier Driver + * + * Copyright (C) 2018 Pengutronix, Fridolin Tux <kernel(a)pengutronix.de> + */ + +#include <linux/gpio/consumer.h> +#include <linux/module.h> +#include <sound/soc.h> + +#define DRV_NAME "ssm2305" + +struct ssm2305 { + /* shutdown gpio */ + struct gpio_desc *gpiod_shutdown; +}; + +static int ssm2305_power_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kctrl, int event) +{ + struct snd_soc_component *c = snd_soc_dapm_to_component(w->dapm); + struct ssm2305 *data = snd_soc_component_get_drvdata(c); + + gpiod_set_value_cansleep(data->gpiod_shutdown, + SND_SOC_DAPM_EVENT_ON(event)); + + return 0; +} + +static const struct snd_soc_dapm_widget ssm2305_dapm_widgets[] = { + /* Stereo input/output */ + SND_SOC_DAPM_INPUT("L_IN"), + SND_SOC_DAPM_INPUT("R_IN"), + SND_SOC_DAPM_OUTPUT("L_OUT"), + SND_SOC_DAPM_OUTPUT("R_OUT"), + + SND_SOC_DAPM_SUPPLY("Power", SND_SOC_NOPM, 0, 0, ssm2305_power_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), +}; + +static const struct snd_soc_dapm_route ssm2305_dapm_routes[] = { + { "L_OUT", NULL, "L_IN" }, + { "R_OUT", NULL, "R_IN" }, + { "L_IN", NULL, "Power" }, + { "R_IN", NULL, "Power" }, +}; + +static const struct snd_soc_component_driver ssm2305_component_driver = { + .dapm_widgets = ssm2305_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(ssm2305_dapm_widgets), + .dapm_routes = ssm2305_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(ssm2305_dapm_routes), +}; + +static int ssm2305_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct ssm2305 *priv; + int err; + + /* Allocate the private data */ + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + platform_set_drvdata(pdev, priv); + + /* Shutdown gpio is optional */ + priv->gpiod_shutdown = devm_gpiod_get(dev, "ssm2305,shutdown", + GPIOD_OUT_LOW); + if (IS_ERR(priv->gpiod_shutdown)) { + err = PTR_ERR(priv->gpiod_shutdown); + if (err != -EPROBE_DEFER) + dev_warn(dev, "Failed to get 'shutdown' gpio: %d\n", + err); + } + + dev_info(dev, "probed\n"); + + return devm_snd_soc_register_component(dev, &ssm2305_component_driver, + NULL, 0); +} + +#ifdef CONFIG_OF +static const struct of_device_id ssm2305_of_match[] = { + { .compatible = "adi,ssm2305", }, + { } +}; +MODULE_DEVICE_TABLE(of, ssm2305_of_match); +#endif + +static struct platform_driver ssm2305_driver = { + .driver = { + .name = DRV_NAME, + .of_match_table = of_match_ptr(ssm2305_of_match), + }, + .probe = ssm2305_probe, +}; + +module_platform_driver(ssm2305_driver); + +MODULE_DESCRIPTION("ASoC SSM2305 amplifier driver"); +MODULE_AUTHOR("Marco Felsch <m.felsch(a)pengutronix.de>"); +MODULE_LICENSE("GPL v2"); -- 2.17.0

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[alsa-devel] [PATCH v2 0/8] slimbus: fixes and some helpers
by Srinivas Kandagatla 17 May '18

17 May '18

Hi Greg, Here is set of patches for slimbus, there are 6 fixes and two helper functions. Most of these issues were found while testing QCOM NGD SLIMBus controller with WCD9335 codec. Changes since v1 (https://lkml.org/lkml/2018/5/16/436): - add need_tid to documentation reported by 0 day test. - remove redundant kconfig for qcom slim controller. thanks, Srini Srinivas Kandagatla (8): slimbus: core: add of_slim_device_get() helper slimbus: core: rearrange slim_eaddr structure slimbus: core: add need_tid flag to slim_msg_txn slimbus: messaging: pass correct wbuf slimbus: messaging: remove multiple calls to pm_runtime_mark_last_busy slimbus: messaging: add slim_prepare_txn() helper function slimbus: messaging: initialize completion correctly slimbus: qcom: remove redundant depends in Kconfig drivers/slimbus/Kconfig | 1 - drivers/slimbus/core.c | 39 +++++++++++++++++++ drivers/slimbus/messaging.c | 92 ++++++++++++++++++++++++++++++--------------- drivers/slimbus/qcom-ctrl.c | 7 +++- drivers/slimbus/slimbus.h | 4 ++ include/linux/slimbus.h | 14 ++++--- 6 files changed, 119 insertions(+), 38 deletions(-) -- 2.16.2

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[alsa-devel] [PATCH 1/2] ALSA: timer: Simplify timer hw resolution calls
by Takashi Iwai 17 May '18

17 May '18

There multiple open-codes to get the hardware timer resolution. Make a local helper function snd_timer_hw_resolution() and call it from all relevant places. There is no functional change by this, just a preliminary work for the following timer resolution hardening patch. Signed-off-by: Takashi Iwai <tiwai(a)suse.de> --- sound/core/timer.c | 33 ++++++++++++++------------------- 1 file changed, 14 insertions(+), 19 deletions(-) diff --git a/sound/core/timer.c b/sound/core/timer.c index dc87728c5b74..23b941df9c43 100644 --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -427,6 +427,14 @@ int snd_timer_close(struct snd_timer_instance *timeri) } EXPORT_SYMBOL(snd_timer_close); +static unsigned long snd_timer_hw_resolution(struct snd_timer *timer) +{ + if (timer->hw.c_resolution) + return timer->hw.c_resolution(timer); + else + return timer->hw.resolution; +} + unsigned long snd_timer_resolution(struct snd_timer_instance *timeri) { struct snd_timer * timer; @@ -434,11 +442,8 @@ unsigned long snd_timer_resolution(struct snd_timer_instance *timeri) if (timeri == NULL) return 0; timer = timeri->timer; - if (timer) { - if (timer->hw.c_resolution) - return timer->hw.c_resolution(timer); - return timer->hw.resolution; - } + if (timer) + return snd_timer_hw_resolution(timer); return 0; } EXPORT_SYMBOL(snd_timer_resolution); @@ -771,10 +776,7 @@ void snd_timer_interrupt(struct snd_timer * timer, unsigned long ticks_left) spin_lock_irqsave(&timer->lock, flags); /* remember the current resolution */ - if (timer->hw.c_resolution) - resolution = timer->hw.c_resolution(timer); - else - resolution = timer->hw.resolution; + resolution = snd_timer_hw_resolution(timer); /* loop for all active instances * Here we cannot use list_for_each_entry because the active_list of a @@ -1014,12 +1016,8 @@ void snd_timer_notify(struct snd_timer *timer, int event, struct timespec *tstam spin_lock_irqsave(&timer->lock, flags); if (event == SNDRV_TIMER_EVENT_MSTART || event == SNDRV_TIMER_EVENT_MCONTINUE || - event == SNDRV_TIMER_EVENT_MRESUME) { - if (timer->hw.c_resolution) - resolution = timer->hw.c_resolution(timer); - else - resolution = timer->hw.resolution; - } + event == SNDRV_TIMER_EVENT_MRESUME) + resolution = snd_timer_hw_resolution(timer); list_for_each_entry(ti, &timer->active_list_head, active_list) { if (ti->ccallback) ti->ccallback(ti, event, tstamp, resolution); @@ -1656,10 +1654,7 @@ static int snd_timer_user_gstatus(struct file *file, mutex_lock(&register_mutex); t = snd_timer_find(&tid); if (t != NULL) { - if (t->hw.c_resolution) - gstatus.resolution = t->hw.c_resolution(t); - else - gstatus.resolution = t->hw.resolution; + gstatus.resolution = snd_timer_hw_resolution(t); if (t->hw.precise_resolution) { t->hw.precise_resolution(t, &gstatus.resolution_num, &gstatus.resolution_den); -- 2.16.3

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