diff options
Diffstat (limited to 'sound/soc/pxa/e740_wm9705.c')
| -rw-r--r-- | sound/soc/pxa/e740_wm9705.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/sound/soc/pxa/e740_wm9705.c b/sound/soc/pxa/e740_wm9705.c new file mode 100644 index 000000000..4e0e9b778 --- /dev/null +++ b/sound/soc/pxa/e740_wm9705.c @@ -0,0 +1,168 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * e740-wm9705.c -- SoC audio for e740 + * + * Copyright 2007 (c) Ian Molton <spyro@f2s.com> + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/gpio/consumer.h> + +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/soc.h> + +#include <linux/platform_data/asoc-pxa.h> + +#include <asm/mach-types.h> + +static struct gpio_desc *gpiod_output_amp, *gpiod_input_amp; +static struct gpio_desc *gpiod_audio_power; + +#define E740_AUDIO_OUT 1 +#define E740_AUDIO_IN 2 + +static int e740_audio_power; + +static void e740_sync_audio_power(int status) +{ + gpiod_set_value(gpiod_audio_power, !status); + gpiod_set_value(gpiod_output_amp, (status & E740_AUDIO_OUT) ? 1 : 0); + gpiod_set_value(gpiod_input_amp, (status & E740_AUDIO_IN) ? 1 : 0); +} + +static int e740_mic_amp_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + if (event & SND_SOC_DAPM_PRE_PMU) + e740_audio_power |= E740_AUDIO_IN; + else if (event & SND_SOC_DAPM_POST_PMD) + e740_audio_power &= ~E740_AUDIO_IN; + + e740_sync_audio_power(e740_audio_power); + + return 0; +} + +static int e740_output_amp_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + if (event & SND_SOC_DAPM_PRE_PMU) + e740_audio_power |= E740_AUDIO_OUT; + else if (event & SND_SOC_DAPM_POST_PMD) + e740_audio_power &= ~E740_AUDIO_OUT; + + e740_sync_audio_power(e740_audio_power); + + return 0; +} + +static const struct snd_soc_dapm_widget e740_dapm_widgets[] = { + SND_SOC_DAPM_HP("Headphone Jack", NULL), + SND_SOC_DAPM_SPK("Speaker", NULL), + SND_SOC_DAPM_MIC("Mic (Internal)", NULL), + SND_SOC_DAPM_PGA_E("Output Amp", SND_SOC_NOPM, 0, 0, NULL, 0, + e740_output_amp_event, SND_SOC_DAPM_PRE_PMU | + SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_PGA_E("Mic Amp", SND_SOC_NOPM, 0, 0, NULL, 0, + e740_mic_amp_event, SND_SOC_DAPM_PRE_PMU | + SND_SOC_DAPM_POST_PMD), +}; + +static const struct snd_soc_dapm_route audio_map[] = { + {"Output Amp", NULL, "LOUT"}, + {"Output Amp", NULL, "ROUT"}, + {"Output Amp", NULL, "MONOOUT"}, + + {"Speaker", NULL, "Output Amp"}, + {"Headphone Jack", NULL, "Output Amp"}, + + {"MIC1", NULL, "Mic Amp"}, + {"Mic Amp", NULL, "Mic (Internal)"}, +}; + +SND_SOC_DAILINK_DEFS(ac97, + DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97")), + DAILINK_COMP_ARRAY(COMP_CODEC("wm9705-codec", "wm9705-hifi")), + DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio"))); + +SND_SOC_DAILINK_DEFS(ac97_aux, + DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97-aux")), + DAILINK_COMP_ARRAY(COMP_CODEC("wm9705-codec", "wm9705-aux")), + DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio"))); + +static struct snd_soc_dai_link e740_dai[] = { + { + .name = "AC97", + .stream_name = "AC97 HiFi", + SND_SOC_DAILINK_REG(ac97), + }, + { + .name = "AC97 Aux", + .stream_name = "AC97 Aux", + SND_SOC_DAILINK_REG(ac97_aux), + }, +}; + +static struct snd_soc_card e740 = { + .name = "Toshiba e740", + .owner = THIS_MODULE, + .dai_link = e740_dai, + .num_links = ARRAY_SIZE(e740_dai), + + .dapm_widgets = e740_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(e740_dapm_widgets), + .dapm_routes = audio_map, + .num_dapm_routes = ARRAY_SIZE(audio_map), + .fully_routed = true, +}; + +static int e740_probe(struct platform_device *pdev) +{ + struct snd_soc_card *card = &e740; + int ret; + + gpiod_input_amp = devm_gpiod_get(&pdev->dev, "Mic amp", GPIOD_OUT_LOW); + ret = PTR_ERR_OR_ZERO(gpiod_input_amp); + if (ret) + return ret; + gpiod_output_amp = devm_gpiod_get(&pdev->dev, "Output amp", GPIOD_OUT_LOW); + ret = PTR_ERR_OR_ZERO(gpiod_output_amp); + if (ret) + return ret; + gpiod_audio_power = devm_gpiod_get(&pdev->dev, "Audio power", GPIOD_OUT_HIGH); + ret = PTR_ERR_OR_ZERO(gpiod_audio_power); + if (ret) + return ret; + + card->dev = &pdev->dev; + + ret = devm_snd_soc_register_card(&pdev->dev, card); + if (ret) + dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", + ret); + return ret; +} + +static int e740_remove(struct platform_device *pdev) +{ + return 0; +} + +static struct platform_driver e740_driver = { + .driver = { + .name = "e740-audio", + .pm = &snd_soc_pm_ops, + }, + .probe = e740_probe, + .remove = e740_remove, +}; + +module_platform_driver(e740_driver); + +/* Module information */ +MODULE_AUTHOR("Ian Molton <spyro@f2s.com>"); +MODULE_DESCRIPTION("ALSA SoC driver for e740"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:e740-audio"); |