Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / sound / soc / pxa / e740_wm9705.c

diff --git a/kernel/sound/soc/pxa/e740_wm9705.c b/kernel/sound/soc/pxa/e740_wm9705.c
new file mode 100644 (file)
index 0000000..d72e124
--- /dev/null
+++ b/kernel/sound/soc/pxa/e740_wm9705.c
@@ -0,0 +1,174 @@
+/*
+ * e740-wm9705.c  --  SoC audio for e740
+ *
+ * Copyright 2007 (c) Ian Molton <spyro@f2s.com>
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation; version 2 ONLY.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/gpio.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+
+#include <mach/audio.h>
+#include <mach/eseries-gpio.h>
+
+#include <asm/mach-types.h>
+
+#include "../codecs/wm9705.h"
+#include "pxa2xx-ac97.h"
+
+
+#define E740_AUDIO_OUT 1
+#define E740_AUDIO_IN  2
+
+static int e740_audio_power;
+
+static void e740_sync_audio_power(int status)
+{
+       gpio_set_value(GPIO_E740_WM9705_nAVDD2, !status);
+       gpio_set_value(GPIO_E740_AMP_ON, (status & E740_AUDIO_OUT) ? 1 : 0);
+       gpio_set_value(GPIO_E740_MIC_ON, (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)"},
+};
+
+static struct snd_soc_dai_link e740_dai[] = {
+       {
+               .name = "AC97",
+               .stream_name = "AC97 HiFi",
+               .cpu_dai_name = "pxa2xx-ac97",
+               .codec_dai_name = "wm9705-hifi",
+               .platform_name = "pxa-pcm-audio",
+               .codec_name = "wm9705-codec",
+       },
+       {
+               .name = "AC97 Aux",
+               .stream_name = "AC97 Aux",
+               .cpu_dai_name = "pxa2xx-ac97-aux",
+               .codec_dai_name = "wm9705-aux",
+               .platform_name = "pxa-pcm-audio",
+               .codec_name = "wm9705-codec",
+       },
+};
+
+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 struct gpio e740_audio_gpios[] = {
+       { GPIO_E740_MIC_ON, GPIOF_OUT_INIT_LOW, "Mic amp" },
+       { GPIO_E740_AMP_ON, GPIOF_OUT_INIT_LOW, "Output amp" },
+       { GPIO_E740_WM9705_nAVDD2, GPIOF_OUT_INIT_HIGH, "Audio power" },
+};
+
+static int e740_probe(struct platform_device *pdev)
+{
+       struct snd_soc_card *card = &e740;
+       int ret;
+
+       ret = gpio_request_array(e740_audio_gpios,
+                                ARRAY_SIZE(e740_audio_gpios));
+       if (ret)
+               return ret;
+
+       card->dev = &pdev->dev;
+
+       ret = snd_soc_register_card(card);
+       if (ret) {
+               dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
+                       ret);
+               gpio_free_array(e740_audio_gpios, ARRAY_SIZE(e740_audio_gpios));
+       }
+       return ret;
+}
+
+static int e740_remove(struct platform_device *pdev)
+{
+       struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+       gpio_free_array(e740_audio_gpios, ARRAY_SIZE(e740_audio_gpios));
+       snd_soc_unregister_card(card);
+       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");