The PCM3008 is a 16-bit stereo audio codec. It accepts
left-justified format for ADC, and right-justified format
for DAC. Independent power-down modes for ADC and DAC are
provided, as well as a digital de-emphasis filter (4 modes).
Signed-off-by: Hugo Villeneuve <[EMAIL PROTECTED]>
---
sound/soc/codecs/Kconfig | 4 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/pcm3008.c | 201 ++++++++++++++++++++++++++++++++++++++++++++
sound/soc/codecs/pcm3008.h | 25 ++++++
4 files changed, 232 insertions(+), 0 deletions(-)
create mode 100644 sound/soc/codecs/pcm3008.c
create mode 100644 sound/soc/codecs/pcm3008.h
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 5df7402..906e11e 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -11,6 +11,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_TLV320AIC26
select SND_SOC_TLV320AIC3X
select SND_SOC_TWL4030
+ select SND_SOC_PCM3008
select SND_SOC_UDA1380
select SND_SOC_WM8510
select SND_SOC_WM8580
@@ -80,6 +81,9 @@ config SND_SOC_TWL4030
tristate
depends on TWL4030_CORE
+config SND_SOC_PCM3008
+ tristate
+
config SND_SOC_UDA1380
tristate
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 3b9b58a..7af88e7 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -3,6 +3,7 @@ snd-soc-ad1980-objs := ad1980.o
snd-soc-ad73311-objs := ad73311.o
snd-soc-ak4535-objs := ak4535.o
snd-soc-cs4270-objs := cs4270.o
+snd-soc-pcm3008-objs := pcm3008.o
snd-soc-ssm2602-objs := ssm2602.o
snd-soc-tlv320aic23-objs := tlv320aic23.o
snd-soc-tlv320aic26-objs := tlv320aic26.o
@@ -26,6 +27,7 @@ obj-$(CONFIG_SND_SOC_AD1980) += snd-soc-ad1980.o
obj-$(CONFIG_SND_SOC_AD73311) += snd-soc-ad73311.o
obj-$(CONFIG_SND_SOC_AK4535) += snd-soc-ak4535.o
obj-$(CONFIG_SND_SOC_CS4270) += snd-soc-cs4270.o
+obj-$(CONFIG_SND_SOC_PCM3008) += snd-soc-pcm3008.o
obj-$(CONFIG_SND_SOC_SSM2602) += snd-soc-ssm2602.o
obj-$(CONFIG_SND_SOC_TLV320AIC23) += snd-soc-tlv320aic23.o
obj-$(CONFIG_SND_SOC_TLV320AIC26) += snd-soc-tlv320aic26.o
diff --git a/sound/soc/codecs/pcm3008.c b/sound/soc/codecs/pcm3008.c
new file mode 100644
index 0000000..d020ed5
--- /dev/null
+++ b/sound/soc/codecs/pcm3008.c
@@ -0,0 +1,201 @@
+/*
+ * ALSA Soc PCM3008 codec support
+ *
+ * Author: Hugo Villeneuve
+ * Copyright (C) 2008 Lyrtech inc
+ *
+ * Based on AC97 Soc codec, original copyright follow:
+ * Copyright 2005 Wolfson Microelectronics PLC.
+ *
+ * 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.
+ *
+ * Generic PCM3008 support.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/initval.h>
+#include <sound/soc.h>
+#include <asm/gpio.h>
+
+#include "pcm3008.h"
+
+#define PCM3008_VERSION "0.2"
+
+#define PCM3008_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
+ SNDRV_PCM_RATE_48000)
+
+struct snd_soc_dai pcm3008_dai = {
+ .name = "PCM3008 HiFi",
+ .type = SND_SOC_DAI_I2S,
+ .playback = {
+ .stream_name = "PCM3008 Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = PCM3008_RATES,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .capture = {
+ .stream_name = "PCM3008 Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = PCM3008_RATES,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+};
+EXPORT_SYMBOL_GPL(pcm3008_dai);
+
+static void pcm3008_gpio_free(struct pcm3008_setup_data *setup)
+{
+ gpio_free(setup->dem0_pin);
+ gpio_free(setup->dem1_pin);
+ gpio_free(setup->pdad_pin);
+ gpio_free(setup->pdda_pin);
+}
+
+static int pcm3008_soc_probe(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec;
+ struct pcm3008_setup_data *setup = socdev->codec_data;
+ int ret = 0;
+
+ printk(KERN_INFO "PCM3008 SoC Audio Codec %s\n", PCM3008_VERSION);
+
+ socdev->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
+ if (!socdev->codec)
+ return -ENOMEM;
+
+ codec = socdev->codec;
+ mutex_init(&codec->mutex);
+
+ codec->name = "PCM3008";
+ codec->owner = THIS_MODULE;
+ codec->dai = &pcm3008_dai;
+ codec->num_dai = 1;
+ codec->write = NULL;
+ codec->read = NULL;
+ INIT_LIST_HEAD(&codec->dapm_widgets);
+ INIT_LIST_HEAD(&codec->dapm_paths);
+
+ /* Register PCMs. */
+ ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
+ if (ret < 0) {
+ printk(KERN_ERR "pcm3008: failed to create pcms\n");
+ goto pcm_err;
+ }
+
+ /* Register Card. */
+ ret = snd_soc_register_card(socdev);
+ if (ret < 0) {
+ printk(KERN_ERR "pcm3008: failed to register card\n");
+ goto card_err;
+ }
+
+ /* DEM1 DEM0 DE-EMPHASIS_MODE
+ * Low Low De-emphasis 44.1 kHz ON
+ * Low High De-emphasis OFF
+ * High Low De-emphasis 48 kHz ON
+ * High High De-emphasis 32 kHz ON
+ */
+
+ /* Configure DEM0 GPIO (turning OFF DAC De-emphasis). */
+ ret = gpio_request(setup->dem0_pin, "codec_dem0");
+ if (ret == 0)
+ ret = gpio_direction_output(setup->dem0_pin, 1);
+ if (ret != 0)
+ goto gpio_err;
+
+ /* Configure DEM1 GPIO (turning OFF DAC De-emphasis). */
+ ret = gpio_request(setup->dem1_pin, "codec_dem1");
+ if (ret == 0)
+ ret = gpio_direction_output(setup->dem1_pin, 0);
+ if (ret != 0)
+ goto gpio_err;
+
+ /* Configure PDAD GPIO. */
+ ret = gpio_request(setup->pdad_pin, "codec_pdad");
+ if (ret == 0)
+ ret = gpio_direction_output(setup->pdad_pin, 1);
+ if (ret != 0)
+ goto gpio_err;
+
+ /* Configure PDDA GPIO. */
+ ret = gpio_request(setup->pdda_pin, "codec_pdda");
+ if (ret == 0)
+ ret = gpio_direction_output(setup->pdda_pin, 1);
+ if (ret != 0)
+ goto gpio_err;
+
+ return ret;
+
+gpio_err:
+ pcm3008_gpio_free(setup);
+card_err:
+ snd_soc_free_pcms(socdev);
+pcm_err:
+ kfree(socdev->codec);
+
+ return ret;
+}
+
+static int pcm3008_soc_remove(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec = socdev->codec;
+ struct pcm3008_setup_data *setup = socdev->codec_data;
+
+ if (!codec)
+ return 0;
+
+ pcm3008_gpio_free(setup);
+ snd_soc_free_pcms(socdev);
+ kfree(socdev->codec);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int pcm3008_soc_suspend(struct platform_device *pdev, pm_message_t msg)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct pcm3008_setup_data *setup = socdev->codec_data;
+
+ gpio_set_value(setup->pdad_pin, 0);
+ gpio_set_value(setup->pdda_pin, 0);
+
+ return 0;
+}
+
+static int pcm3008_soc_resume(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct pcm3008_setup_data *setup = socdev->codec_data;
+
+ gpio_set_value(setup->pdad_pin, 1);
+ gpio_set_value(setup->pdda_pin, 1);
+
+ return 0;
+}
+#else
+#define pcm3008_soc_suspend NULL
+#define pcm3008_soc_resume NULL
+#endif
+
+struct snd_soc_codec_device soc_codec_dev_pcm3008 = {
+ .probe = pcm3008_soc_probe,
+ .remove = pcm3008_soc_remove,
+ .suspend = pcm3008_soc_suspend,
+ .resume = pcm3008_soc_resume,
+};
+EXPORT_SYMBOL_GPL(soc_codec_dev_pcm3008);
+
+MODULE_DESCRIPTION("Soc PCM3008 driver");
+MODULE_AUTHOR("Hugo Villeneuve");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/pcm3008.h b/sound/soc/codecs/pcm3008.h
new file mode 100644
index 0000000..d04e87d
--- /dev/null
+++ b/sound/soc/codecs/pcm3008.h
@@ -0,0 +1,25 @@
+/*
+ * PCM3008 ALSA SoC Layer
+ *
+ * Author: Hugo Villeneuve
+ * Copyright (C) 2008 Lyrtech inc
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __LINUX_SND_SOC_PCM3008_H
+#define __LINUX_SND_SOC_PCM3008_H
+
+struct pcm3008_setup_data {
+ unsigned dem0_pin;
+ unsigned dem1_pin;
+ unsigned pdad_pin;
+ unsigned pdda_pin;
+};
+
+extern struct snd_soc_codec_device soc_codec_dev_pcm3008;
+extern struct snd_soc_dai pcm3008_dai;
+
+#endif
--
1.5.5
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