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Subject[PATCH v2 2/3] ASoC: add iPAQ hx4700 machine driver
Date
AK4641 connected via I2S and I2C, jack detection via GPIO.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
---
sound/soc/pxa/Kconfig | 9 ++
sound/soc/pxa/Makefile | 2 +
sound/soc/pxa/hx4700.c | 260 ++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 271 insertions(+), 0 deletions(-)
create mode 100644 sound/soc/pxa/hx4700.c

diff --git a/sound/soc/pxa/Kconfig b/sound/soc/pxa/Kconfig
index 580f485..33ebc46 100644
--- a/sound/soc/pxa/Kconfig
+++ b/sound/soc/pxa/Kconfig
@@ -155,6 +155,15 @@ config SND_SOC_RAUMFELD
help
Say Y if you want to add support for SoC audio on Raumfeld devices

+config SND_PXA2XX_SOC_HX4700
+ tristate "SoC Audio support for HP iPAQ hx4700"
+ depends on SND_PXA2XX_SOC && MACH_H4700
+ select SND_PXA2XX_SOC_I2S
+ select SND_SOC_AK4641
+ help
+ Say Y if you want to add support for SoC audio on the
+ HP iPAQ hx4700.
+
config SND_PXA2XX_SOC_MAGICIAN
tristate "SoC Audio support for HTC Magician"
depends on SND_PXA2XX_SOC && MACH_MAGICIAN
diff --git a/sound/soc/pxa/Makefile b/sound/soc/pxa/Makefile
index 0766016..af35762 100644
--- a/sound/soc/pxa/Makefile
+++ b/sound/soc/pxa/Makefile
@@ -22,6 +22,7 @@ snd-soc-palm27x-objs := palm27x.o
snd-soc-saarb-objs := saarb.o
snd-soc-tavorevb3-objs := tavorevb3.o
snd-soc-zylonite-objs := zylonite.o
+snd-soc-hx4700-objs := hx4700.o
snd-soc-magician-objs := magician.o
snd-soc-mioa701-objs := mioa701_wm9713.o
snd-soc-z2-objs := z2.o
@@ -37,6 +38,7 @@ obj-$(CONFIG_SND_PXA2XX_SOC_E800) += snd-soc-e800.o
obj-$(CONFIG_SND_PXA2XX_SOC_SPITZ) += snd-soc-spitz.o
obj-$(CONFIG_SND_PXA2XX_SOC_EM_X270) += snd-soc-em-x270.o
obj-$(CONFIG_SND_PXA2XX_SOC_PALM27X) += snd-soc-palm27x.o
+obj-$(CONFIG_SND_PXA2XX_SOC_HX4700) += snd-soc-hx4700.o
obj-$(CONFIG_SND_PXA2XX_SOC_MAGICIAN) += snd-soc-magician.o
obj-$(CONFIG_SND_PXA2XX_SOC_MIOA701) += snd-soc-mioa701.o
obj-$(CONFIG_SND_PXA2XX_SOC_Z2) += snd-soc-z2.o
diff --git a/sound/soc/pxa/hx4700.c b/sound/soc/pxa/hx4700.c
new file mode 100644
index 0000000..8a13f2f
--- /dev/null
+++ b/sound/soc/pxa/hx4700.c
@@ -0,0 +1,260 @@
+/*
+ * SoC audio for HP iPAQ hx4700
+ *
+ * Copyright (c) 2009 Philipp Zabel
+ *
+ * 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; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+
+#include <sound/core.h>
+#include <sound/jack.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include <mach/hx4700.h>
+#include <asm/mach-types.h>
+#include "pxa2xx-i2s.h"
+
+#include "../codecs/ak4641.h"
+
+static struct snd_soc_jack hs_jack;
+
+/* Headphones jack detection DAPM pin */
+static struct snd_soc_jack_pin hs_jack_pin[] = {
+ {
+ .pin = "Headphone Jack",
+ .mask = SND_JACK_HEADPHONE,
+ },
+ {
+ .pin = "Speaker",
+ /* disable speaker when hp jack is inserted */
+ .mask = SND_JACK_HEADPHONE,
+ .invert = 1,
+ },
+};
+
+/* Headphones jack detection GPIO */
+static struct snd_soc_jack_gpio hs_jack_gpio = {
+ .gpio = GPIO75_HX4700_EARPHONE_nDET,
+ .invert = true,
+ .name = "hp-gpio",
+ .report = SND_JACK_HEADPHONE,
+ .debounce_time = 200,
+};
+
+/*
+ * iPAQ hx4700 uses I2S for capture and playback.
+ */
+static int hx4700_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+ int ret = 0;
+
+ /* set codec DAI configuration */
+ ret = snd_soc_dai_set_fmt(codec_dai,
+ SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS);
+ if (ret < 0)
+ return ret;
+
+ /* set cpu DAI configuration */
+ ret = snd_soc_dai_set_fmt(cpu_dai,
+ SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS);
+ if (ret < 0)
+ return ret;
+
+ /* set the I2S system clock as output */
+ ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
+ SND_SOC_CLOCK_OUT);
+ if (ret < 0)
+ return ret;
+
+ /* inform codec driver about clock freq *
+ * (PXA I2S always uses divider 256) */
+ ret = snd_soc_dai_set_sysclk(codec_dai, 0, 256 * params_rate(params),
+ SND_SOC_CLOCK_IN);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static struct snd_soc_ops hx4700_ops = {
+ .hw_params = hx4700_hw_params,
+};
+
+static int hx4700_spk_power(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *k, int event)
+{
+ gpio_set_value(GPIO107_HX4700_SPK_nSD, !!SND_SOC_DAPM_EVENT_ON(event));
+ return 0;
+}
+
+static int hx4700_hp_power(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *k, int event)
+{
+ gpio_set_value(GPIO92_HX4700_HP_DRIVER, !!SND_SOC_DAPM_EVENT_ON(event));
+ return 0;
+}
+
+/* hx4700 machine dapm widgets */
+static const struct snd_soc_dapm_widget ak4641_dapm_widgets[] = {
+ SND_SOC_DAPM_HP("Headphone Jack", hx4700_hp_power),
+ SND_SOC_DAPM_SPK("Speaker", hx4700_spk_power),
+ SND_SOC_DAPM_MIC("Built-in Microphone", NULL),
+};
+
+/* hx4700 machine audio_map */
+static const struct snd_soc_dapm_route audio_map[] = {
+
+ /* Headphone connected to LOUT, ROUT */
+ {"Headphone Jack", NULL, "LOUT"},
+ {"Headphone Jack", NULL, "ROUT"},
+
+ /* Speaker connected to MOUT2 */
+ {"Speaker", NULL, "MOUT2"},
+
+ /* Microphone connected to MICIN */
+ {"MICIN", NULL, "Built-in Microphone"},
+ {"AIN", NULL, "MICOUT"},
+};
+
+static struct snd_soc_card snd_soc_card_hx4700;
+
+/*
+ * Logic for a ak4641 as connected on a HP iPAQ hx4700
+ */
+static int hx4700_ak4641_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_codec *codec = rtd->codec;
+ struct snd_soc_dapm_context *dapm = &codec->dapm;
+ int err;
+
+ /* NC codec pins */
+ /* FIXME: is anything connected here? */
+ snd_soc_dapm_nc_pin(dapm, "MOUT1");
+ snd_soc_dapm_nc_pin(dapm, "MICEXT");
+ snd_soc_dapm_nc_pin(dapm, "AUX");
+
+ /* Add hx4700 specific widgets */
+ snd_soc_dapm_new_controls(dapm, ak4641_dapm_widgets,
+ ARRAY_SIZE(ak4641_dapm_widgets));
+
+ /* Set up hx4700 specific audio path interconnects */
+ snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
+
+ snd_soc_dapm_sync(dapm);
+
+ /* Jack detection API stuff */
+ err = snd_soc_jack_new(codec, "Headphone Jack",
+ SND_JACK_HEADPHONE, &hs_jack);
+ if (err)
+ return err;
+
+ err = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pin),
+ hs_jack_pin);
+ if (err)
+ return err;
+
+ err = snd_soc_jack_add_gpios(&hs_jack, 1, &hs_jack_gpio);
+
+ return err;
+}
+
+/* hx4700 digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link hx4700_dai[] = {
+{
+ .name = "ak4641",
+ .stream_name = "AK4641",
+ .cpu_dai_name = "pxa2xx-i2s",
+ .codec_dai_name = "ak4641-hifi",
+ .platform_name = "pxa-pcm-audio",
+ .codec_name = "ak4641.0-0012",
+ .init = hx4700_ak4641_init,
+ .ops = &hx4700_ops,
+},
+};
+
+/* hx4700 audio machine driver */
+static struct snd_soc_card snd_soc_card_hx4700 = {
+ .name = "iPAQ hx4700",
+ .dai_link = hx4700_dai,
+ .num_links = ARRAY_SIZE(hx4700_dai),
+};
+
+static struct platform_device *hx4700_snd_device;
+
+static int __init hx4700_init(void)
+{
+ int ret;
+
+ if (!machine_is_h4700())
+ return -ENODEV;
+
+ ret = gpio_request(GPIO107_HX4700_SPK_nSD, "SPK_POWER");
+ if (ret)
+ goto err_request_spk;
+ ret = gpio_request(GPIO92_HX4700_HP_DRIVER, "EP_POWER");
+ if (ret)
+ goto err_request_ep;
+
+ gpio_direction_output(GPIO107_HX4700_SPK_nSD, 1);
+ gpio_direction_output(GPIO92_HX4700_HP_DRIVER, 0);
+
+ hx4700_snd_device = platform_device_alloc("soc-audio", -1);
+ if (!hx4700_snd_device) {
+ ret = -ENOMEM;
+ goto err_pdev;
+ }
+
+ platform_set_drvdata(hx4700_snd_device, &snd_soc_card_hx4700);
+ ret = platform_device_add(hx4700_snd_device);
+ if (ret) {
+ platform_device_put(hx4700_snd_device);
+ goto err_pdev;
+ }
+
+ return 0;
+
+err_pdev:
+ gpio_free(GPIO92_HX4700_HP_DRIVER);
+err_request_ep:
+ gpio_free(GPIO107_HX4700_SPK_nSD);
+err_request_spk:
+ return ret;
+}
+
+static void __exit hx4700_exit(void)
+{
+ snd_soc_jack_free_gpios(&hs_jack, 1, &hs_jack_gpio);
+ platform_device_unregister(hx4700_snd_device);
+
+ gpio_set_value(GPIO92_HX4700_HP_DRIVER, 0);
+ gpio_set_value(GPIO107_HX4700_SPK_nSD, 0);
+
+ gpio_free(GPIO92_HX4700_HP_DRIVER);
+ gpio_free(GPIO107_HX4700_SPK_nSD);
+}
+
+module_init(hx4700_init);
+module_exit(hx4700_exit);
+
+MODULE_AUTHOR("Philipp Zabel");
+MODULE_DESCRIPTION("ALSA SoC iPAQ hx4700");
+MODULE_LICENSE("GPL");
--
1.7.4.rc1


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