[alsa-devel] [PATCH 4/4] ASoC: machine driver for Toshiba e800
Mark Brown
broonie at opensource.wolfsonmicro.com
Fri Jan 16 18:15:15 CET 2009
From: Ian Molton <ian at mnementh.co.uk>
This patch adds support for the wm9712 ac97 codec as used in the Toshiba e800
PDA. It includes support for powering up / down the external headphone and
speaker amplifiers on this machine.
Signed-off-by: Ian Molton <ian at mnementh.co.uk>
Signed-off-by: Mark Brown <broonie at opensource.wolfsonmicro.com>
---
arch/arm/mach-pxa/include/mach/eseries-gpio.h | 5 +
sound/soc/pxa/e800_wm9712.c | 116 ++++++++++++++++++++++---
2 files changed, 107 insertions(+), 14 deletions(-)
diff --git a/arch/arm/mach-pxa/include/mach/eseries-gpio.h b/arch/arm/mach-pxa/include/mach/eseries-gpio.h
index 02b28e0..6d6e4d8 100644
--- a/arch/arm/mach-pxa/include/mach/eseries-gpio.h
+++ b/arch/arm/mach-pxa/include/mach/eseries-gpio.h
@@ -50,6 +50,11 @@
#define GPIO_E750_SPK_AMP_OFF 7
#define GPIO_E750_HP_DETECT 37
+/* e800 audio control GPIOs */
+#define GPIO_E800_HP_DETECT 81
+#define GPIO_E800_HP_AMP_OFF 82
+#define GPIO_E800_SPK_AMP_ON 83
+
/* ASIC related GPIOs */
#define GPIO_ESERIES_TMIO_IRQ 5
#define GPIO_ESERIES_TMIO_PCLR 19
diff --git a/sound/soc/pxa/e800_wm9712.c b/sound/soc/pxa/e800_wm9712.c
index 2e3386d..78a1770 100644
--- a/sound/soc/pxa/e800_wm9712.c
+++ b/sound/soc/pxa/e800_wm9712.c
@@ -1,8 +1,6 @@
/*
* e800-wm9712.c -- SoC audio for e800
*
- * Based on tosa.c
- *
* Copyright 2007 (c) Ian Molton <spyro at f2s.com>
*
* This program is free software; you can redistribute it and/or modify it
@@ -13,31 +11,96 @@
#include <linux/module.h>
#include <linux/moduleparam.h>
-#include <linux/device.h>
+#include <linux/gpio.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
-#include <asm/mach-types.h>
#include <mach/pxa-regs.h>
#include <mach/hardware.h>
#include <mach/audio.h>
+#include <mach/eseries-gpio.h>
+
+#include <asm/mach-types.h>
#include "../codecs/wm9712.h"
#include "pxa2xx-pcm.h"
#include "pxa2xx-ac97.h"
-static struct snd_soc_card e800;
+static int e800_spk_amp_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ if (event & SND_SOC_DAPM_PRE_PMU)
+ gpio_set_value(GPIO_E800_SPK_AMP_ON, 1);
+ else if (event & SND_SOC_DAPM_POST_PMD)
+ gpio_set_value(GPIO_E800_SPK_AMP_ON, 0);
-static struct snd_soc_dai_link e800_dai[] = {
+ return 0;
+}
+
+static int e800_hp_amp_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
{
- .name = "AC97 Aux",
- .stream_name = "AC97 Aux",
- .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
- .codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],
-},
+ if (event & SND_SOC_DAPM_PRE_PMU)
+ gpio_set_value(GPIO_E800_HP_AMP_OFF, 0);
+ else if (event & SND_SOC_DAPM_POST_PMD)
+ gpio_set_value(GPIO_E800_HP_AMP_OFF, 1);
+
+ return 0;
+}
+
+static const struct snd_soc_dapm_widget e800_dapm_widgets[] = {
+ SND_SOC_DAPM_HP("Headphone Jack", NULL),
+ SND_SOC_DAPM_MIC("Mic (Internal1)", NULL),
+ SND_SOC_DAPM_MIC("Mic (Internal2)", NULL),
+ SND_SOC_DAPM_SPK("Speaker", NULL),
+ SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
+ e800_hp_amp_event, SND_SOC_DAPM_PRE_PMU |
+ SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_PGA_E("Speaker Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
+ e800_spk_amp_event, SND_SOC_DAPM_PRE_PMU |
+ SND_SOC_DAPM_POST_PMD),
+};
+
+static const struct snd_soc_dapm_route audio_map[] = {
+ {"Headphone Jack", NULL, "HPOUTL"},
+ {"Headphone Jack", NULL, "HPOUTR"},
+ {"Headphone Jack", NULL, "Headphone Amp"},
+
+ {"Speaker Amp", NULL, "MONOOUT"},
+ {"Speaker", NULL, "Speaker Amp"},
+
+ {"MIC1", NULL, "Mic (Internal1)"},
+ {"MIC2", NULL, "Mic (Internal2)"},
+};
+
+static int e800_ac97_init(struct snd_soc_codec *codec)
+{
+ snd_soc_dapm_new_controls(codec, e800_dapm_widgets,
+ ARRAY_SIZE(e800_dapm_widgets));
+
+ snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
+ snd_soc_dapm_sync(codec);
+
+ return 0;
+}
+
+static struct snd_soc_dai_link e800_dai[] = {
+ {
+ .name = "AC97",
+ .stream_name = "AC97 HiFi",
+ .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
+ .codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI],
+ .init = e800_ac97_init,
+ },
+ {
+ .name = "AC97 Aux",
+ .stream_name = "AC97 Aux",
+ .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
+ .codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],
+ },
};
static struct snd_soc_card e800 = {
@@ -61,6 +124,22 @@ static int __init e800_init(void)
if (!machine_is_e800())
return -ENODEV;
+ ret = gpio_request(GPIO_E800_HP_AMP_OFF, "Headphone amp");
+ if (ret)
+ return ret;
+
+ ret = gpio_request(GPIO_E800_SPK_AMP_ON, "Speaker amp");
+ if (ret)
+ goto free_hp_amp_gpio;
+
+ ret = gpio_direction_output(GPIO_E800_HP_AMP_OFF, 1);
+ if (ret)
+ goto free_spk_amp_gpio;
+
+ ret = gpio_direction_output(GPIO_E800_SPK_AMP_ON, 1);
+ if (ret)
+ goto free_spk_amp_gpio;
+
e800_snd_device = platform_device_alloc("soc-audio", -1);
if (!e800_snd_device)
return -ENOMEM;
@@ -69,8 +148,15 @@ static int __init e800_init(void)
e800_snd_devdata.dev = &e800_snd_device->dev;
ret = platform_device_add(e800_snd_device);
- if (ret)
- platform_device_put(e800_snd_device);
+ if (!ret)
+ return 0;
+
+/* Fail gracefully */
+ platform_device_put(e800_snd_device);
+free_spk_amp_gpio:
+ gpio_free(GPIO_E800_SPK_AMP_ON);
+free_hp_amp_gpio:
+ gpio_free(GPIO_E800_HP_AMP_OFF);
return ret;
}
@@ -78,6 +164,8 @@ static int __init e800_init(void)
static void __exit e800_exit(void)
{
platform_device_unregister(e800_snd_device);
+ gpio_free(GPIO_E800_SPK_AMP_ON);
+ gpio_free(GPIO_E800_HP_AMP_OFF);
}
module_init(e800_init);
@@ -86,4 +174,4 @@ module_exit(e800_exit);
/* Module information */
MODULE_AUTHOR("Ian Molton <spyro at f2s.com>");
MODULE_DESCRIPTION("ALSA SoC driver for e800");
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("GPL v2");
--
1.5.6.5
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