diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2015-12-11 19:43:57 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-12-12 23:03:47 +0000 |
| commit | 405926276bfb316915c16e57a3943eb2cf4dd8fa (patch) | |
| tree | b9ba8c77f7245de6c253f8515f9c774b12798c8c /sound/soc/sunxi | |
| parent | e6415b485059af183873e907662a3cdeefacb58b (diff) | |
| download | linux-405926276bfb316915c16e57a3943eb2cf4dd8fa.tar.bz2 | |
ASoC: sun4i-codec: Add support for PA gpio pin
Add support for PA gpio pin for controlling an external amplifier as used
on some Allwinner boards.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sunxi')
| -rw-r--r-- | sound/soc/sunxi/sun4i-codec.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/sound/soc/sunxi/sun4i-codec.c b/sound/soc/sunxi/sun4i-codec.c index 519ccb3444e8..e6cc6a14718a 100644 --- a/sound/soc/sunxi/sun4i-codec.c +++ b/sound/soc/sunxi/sun4i-codec.c @@ -28,6 +28,7 @@ #include <linux/of_address.h> #include <linux/clk.h> #include <linux/regmap.h> +#include <linux/gpio/consumer.h> #include <sound/core.h> #include <sound/pcm.h> @@ -103,6 +104,7 @@ struct sun4i_codec { struct regmap *regmap; struct clk *clk_apb; struct clk *clk_module; + struct gpio_desc *gpio_pa; struct snd_dmaengine_dai_dma_data capture_dma_data; struct snd_dmaengine_dai_dma_data playback_dma_data; @@ -709,6 +711,26 @@ static struct snd_soc_dai_link *sun4i_codec_create_link(struct device *dev, return link; }; +static int sun4i_codec_spk_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *k, int event) +{ + struct sun4i_codec *scodec = snd_soc_card_get_drvdata(w->dapm->card); + + if (scodec->gpio_pa) + gpiod_set_value_cansleep(scodec->gpio_pa, + !!SND_SOC_DAPM_EVENT_ON(event)); + + return 0; +} + +static const struct snd_soc_dapm_widget sun4i_codec_card_dapm_widgets[] = { + SND_SOC_DAPM_SPK("Speaker", sun4i_codec_spk_event), +}; + +static const struct snd_soc_dapm_route sun4i_codec_card_dapm_routes[] = { + { "Speaker", NULL, "Power Amplifier" }, +}; + static struct snd_soc_card *sun4i_codec_create_card(struct device *dev) { struct snd_soc_card *card; @@ -723,6 +745,10 @@ static struct snd_soc_card *sun4i_codec_create_card(struct device *dev) card->dev = dev; card->name = "sun4i-codec"; + card->dapm_widgets = sun4i_codec_card_dapm_widgets; + card->num_dapm_widgets = ARRAY_SIZE(sun4i_codec_card_dapm_widgets); + card->dapm_routes = sun4i_codec_card_dapm_routes; + card->num_dapm_routes = ARRAY_SIZE(sun4i_codec_card_dapm_routes); return card; }; @@ -774,6 +800,15 @@ static int sun4i_codec_probe(struct platform_device *pdev) return -EINVAL; } + scodec->gpio_pa = devm_gpiod_get_optional(&pdev->dev, "allwinner,pa", + GPIOD_OUT_LOW); + if (IS_ERR(scodec->gpio_pa)) { + ret = PTR_ERR(scodec->gpio_pa); + if (ret != -EPROBE_DEFER) + dev_err(&pdev->dev, "Failed to get pa gpio: %d\n", ret); + return ret; + } + /* DMA configuration for TX FIFO */ scodec->playback_dma_data.addr = res->start + SUN4I_CODEC_DAC_TXDATA; scodec->playback_dma_data.maxburst = 4; |