[alsa-devel] [PATCH 1/4] ASoC: ALSA ASoC CQ0093 Voice Codec Driver
miguel.aguilar at ridgerun.com
miguel.aguilar at ridgerun.com
Tue Sep 22 21:28:58 CEST 2009
From: Miguel Aguilar <miguel.aguilar at ridgerun.com>
This patch adds support for the Voice Codec CQ0093.
This driver was tested on a DM355 EVM rev C.
Signed-off-by: Miguel Aguilar <miguel.aguilar at ridgerun.com>
---
sound/soc/codecs/Kconfig | 4 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/cq93vc.c | 377 +++++++++++++++++++++++++++++++++++++++++++++
sound/soc/codecs/cq93vc.h | 23 +++
4 files changed, 406 insertions(+), 0 deletions(-)
create mode 100644 sound/soc/codecs/cq93vc.c
create mode 100644 sound/soc/codecs/cq93vc.h
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 0edca93..55d1287 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -19,6 +19,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_AK4104 if SPI_MASTER
select SND_SOC_AK4535 if I2C
select SND_SOC_AK4642 if I2C
+ select SND_SOC_CQ0093VC if ARCH_DAVINCI_DM365
select SND_SOC_CS4270 if I2C
select SND_SOC_MAX9877 if I2C
select SND_SOC_PCM3008
@@ -96,6 +97,9 @@ config SND_SOC_AK4535
config SND_SOC_AK4642
tristate
+config SND_SOC_CQ0093VC
+ tristate
+
# Cirrus Logic CS4270 Codec
config SND_SOC_CS4270
tristate
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index fb4af28..a3e713c 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -6,6 +6,7 @@ snd-soc-ad73311-objs := ad73311.o
snd-soc-ak4104-objs := ak4104.o
snd-soc-ak4535-objs := ak4535.o
snd-soc-ak4642-objs := ak4642.o
+snd-soc-cq93vc-objs := cq93vc.o
snd-soc-cs4270-objs := cs4270.o
snd-soc-cx20442-objs := cx20442.o
snd-soc-l3-objs := l3.o
@@ -56,6 +57,7 @@ obj-$(CONFIG_SND_SOC_AD73311) += snd-soc-ad73311.o
obj-$(CONFIG_SND_SOC_AK4104) += snd-soc-ak4104.o
obj-$(CONFIG_SND_SOC_AK4535) += snd-soc-ak4535.o
obj-$(CONFIG_SND_SOC_AK4642) += snd-soc-ak4642.o
+obj-$(CONFIG_SND_SOC_CQ0093VC) += snd-soc-cq93vc.o
obj-$(CONFIG_SND_SOC_CS4270) += snd-soc-cs4270.o
obj-$(CONFIG_SND_SOC_CX20442) += snd-soc-cx20442.o
obj-$(CONFIG_SND_SOC_L3) += snd-soc-l3.o
diff --git a/sound/soc/codecs/cq93vc.c b/sound/soc/codecs/cq93vc.c
new file mode 100644
index 0000000..e64af25
--- /dev/null
+++ b/sound/soc/codecs/cq93vc.c
@@ -0,0 +1,377 @@
+/*
+ * ALSA SoC CQ0093 Voice Codec Driver
+ *
+ * Copyright (C) 2009 Texas Instruments.
+ *
+ * Author: Miguel Aguilar <miguel.aguilar at ridgerun.com>
+ *
+ * Initial code: Hui Geng
+ *
+ * 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/moduleparam.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/device.h>
+#include <linux/clk.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+#include <sound/soc-dapm.h>
+#include <sound/initval.h>
+
+#include <mach/dm365.h>
+
+#include "cq93vc.h"
+
+#define AUDIO_NAME "cq0093"
+#define CQ93VC_VERSION "0.1"
+
+/*
+ * Voice codec registers
+ *
+ * The base address for the registers used by this driver is shifted
+ * 0x80 from the original Voice Codec base adress since the first region
+ * of the Voice Codec registers is used by the Voice Codec Interface driver.
+ */
+#define VC_REG05 0x14 /* PGA and MIC Gain Control */
+#define VC_REG09 0x24 /* Digital Soft Mute/Attenuation Control */
+#define VC_REG12 0x30 /* Voice Codec Up/Down */
+
+/* Registers bits */
+#define PGA_GAIN 0x07
+#define DIG_ATTEN 0x3F
+#define MUTE 0x40
+#define POWER_ALL_ON 0xFD
+
+/* Codec private data */
+struct cq93vc_priv {
+ void __iomem *base;
+ unsigned int sysclk;
+ resource_size_t pbase;
+ size_t base_size;
+};
+
+/*
+ * Read to the cq0093 register space
+ */
+static inline unsigned int cq93vc_read(struct snd_soc_codec *codec,
+ unsigned int reg)
+{
+ struct cq93vc_priv *cq93vc = codec->private_data;
+
+ return __raw_readb(cq93vc->base + reg);
+}
+
+/*
+ * Write to the cq0093 register space
+ */
+static int cq93vc_write(struct snd_soc_codec *codec, unsigned int reg,
+ unsigned int value)
+{
+ struct cq93vc_priv *cq93vc = codec->private_data;
+
+ __raw_writeb(value, cq93vc->base + reg);
+ return 0;
+}
+
+static int cq93vc_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ return 0;
+}
+
+static const struct snd_kcontrol_new cq93vc_snd_controls[] = {
+ SOC_SINGLE("PGA Capture Volume", VC_REG05, 0, 0x03, 0),
+ SOC_SINGLE("Mono DAC Playback Volume", VC_REG09, 0, 0x3f, 0),
+};
+
+static int cq93vc_mute(struct snd_soc_dai *dai, int mute)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ u8 reg = cq93vc_read(codec, VC_REG09) & ~MUTE;
+
+ if (mute)
+ cq93vc_write(codec, VC_REG09, reg | MUTE);
+ else
+ cq93vc_write(codec, VC_REG09, reg);
+
+ return 0;
+}
+
+static int cq93vc_add_controls(struct snd_soc_codec *codec)
+{
+ int err, i;
+
+ for (i = 0; i < ARRAY_SIZE(cq93vc_snd_controls); i++) {
+ err = snd_ctl_add(codec->card,
+ snd_soc_cnew(&cq93vc_snd_controls[i],
+ codec, NULL));
+ if (err < 0)
+ return err;
+ }
+
+ return 0;
+}
+
+static int cq93vc_set_dai_sysclk(struct snd_soc_dai *codec_dai,
+ int clk_id, unsigned int freq, int dir)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ struct cq93vc_priv *cq93vc = codec->private_data;
+
+ switch (freq) {
+ case 22579200:
+ case 27000000:
+ case 33868800:
+ cq93vc->sysclk = freq;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static int cq93vc_set_bias_level(struct snd_soc_codec *codec,
+ enum snd_soc_bias_level level)
+{
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ /* all power is driven by DAPM system */
+ cq93vc_write(codec, VC_REG12, POWER_ALL_ON);
+ break;
+ case SND_SOC_BIAS_PREPARE:
+ break;
+ case SND_SOC_BIAS_STANDBY:
+ /*
+ * all power is driven by DAPM system,
+ * so output power is safe if bypass was set
+ */
+ cq93vc_write(codec, VC_REG12, 0x0);
+ break;
+ case SND_SOC_BIAS_OFF:
+ /* force all power off */
+ cq93vc_write(codec, VC_REG12, 0x0);
+ break;
+ }
+ codec->bias_level = level;
+
+ return 0;
+}
+
+#define CQ93VC_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000)
+#define CQ93VC_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE)
+
+static struct snd_soc_dai_ops cq93vc_dai_ops = {
+ .hw_params = cq93vc_hw_params,
+ .digital_mute = cq93vc_mute,
+ .set_sysclk = cq93vc_set_dai_sysclk,
+};
+
+struct snd_soc_dai cq93vc_dai = {
+ .name = "cq93vc",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = CQ93VC_RATES,
+ .formats = CQ93VC_FORMATS,},
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = CQ93VC_RATES,
+ .formats = CQ93VC_FORMATS,},
+ .ops = &cq93vc_dai_ops,
+};
+EXPORT_SYMBOL_GPL(cq93vc_dai);
+
+static int cq93vc_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec = socdev->card->codec;
+
+ cq93vc_set_bias_level(codec, SND_SOC_BIAS_OFF);
+
+ return 0;
+}
+
+static int cq93vc_resume(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec = socdev->card->codec;
+
+ cq93vc_set_bias_level(codec, codec->suspend_bias_level);
+
+ return 0;
+}
+
+static struct snd_soc_device *cq93vc_socdev;
+
+static int cq93vc_probe(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct device *dev = &pdev->dev;
+ struct cq93vc_priv *cq93vc;
+ struct snd_soc_codec *codec;
+ struct resource *res, *mem;
+ int ret;
+
+ dev_info(dev, "CQ0093 Voice Codec %s\n", CQ93VC_VERSION);
+
+ cq93vc = kzalloc(sizeof(struct cq93vc_priv), GFP_KERNEL);
+ if (cq93vc == NULL) {
+ dev_dbg(dev, "%s: could not allocate memory for private data\n",
+ pdev->name);
+ return -ENOMEM;
+ }
+
+ codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
+ if (codec == NULL) {
+ dev_dbg(dev, "%s: could not allocate memory for codec data\n",
+ pdev->name);
+ ret = -ENOMEM;
+ goto fail1;
+ }
+
+ res = cq93vc_resources;
+
+ cq93vc->pbase = res->start;
+ cq93vc->base_size = resource_size(res);
+
+ mem = request_mem_region(cq93vc->pbase,
+ cq93vc->base_size, "cq93vc");
+ if (!mem) {
+ dev_dbg(dev,"%s: voice codec registers at %08x are not free\n",
+ pdev->name, cq93vc->pbase);
+ ret = -EBUSY;
+ goto fail2;
+ }
+
+ cq93vc->base = ioremap(cq93vc->pbase, cq93vc->base_size);
+ if (cq93vc->base == NULL) {
+ dev_dbg(dev,"%s: can't ioremap mem resource.\n",
+ pdev->name);
+ ret = -ENOMEM;
+ goto fail3;
+ }
+
+ mutex_init(&codec->mutex);
+ codec->private_data = cq93vc;
+ codec->name = "cq93vc";
+ codec->owner = THIS_MODULE;
+ codec->read = cq93vc_read;
+ codec->write = cq93vc_write;
+ codec->set_bias_level = cq93vc_set_bias_level;
+ codec->dai = &cq93vc_dai;
+ codec->num_dai = 1;
+ INIT_LIST_HEAD(&codec->dapm_widgets);
+ INIT_LIST_HEAD(&codec->dapm_paths);
+
+ socdev->card->codec = codec;
+
+ /* Register pcms */
+ ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
+ if (ret < 0) {
+ dev_err(dev, "%s: failed to create pcms\n", pdev->name);
+ goto fail4;
+ }
+
+ /* Set the PGA Gain to 18 dB */
+ cq93vc_write(codec, VC_REG05, PGA_GAIN);
+
+ /* Set the DAC digital attenuation to 0 dB */
+ cq93vc_write(codec, VC_REG09, DIG_ATTEN);
+
+ /* Set controls */
+ cq93vc_add_controls(codec);
+
+ /* Off, with power on */
+ cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+
+ /* Register sound card */
+ ret = snd_soc_init_card(socdev);
+ if (ret < 0) {
+ dev_err(dev, "%s: failed to register card\n", pdev->name);
+ goto fail5;
+ }
+
+ cq93vc_socdev = socdev;
+
+ return 0;
+fail5:
+ snd_soc_free_pcms(socdev);
+ snd_soc_dapm_free(socdev);
+fail4:
+ iounmap(cq93vc->base);
+fail3:
+ release_mem_region(cq93vc->pbase, cq93vc->base_size);
+fail2:
+ kfree(codec);
+fail1:
+ kfree(cq93vc);
+
+ return ret;
+}
+
+static int cq93vc_remove(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec = socdev->card->codec;
+ struct cq93vc_priv *cq93vc = codec->private_data;
+
+ /* Power down chip */
+ if (codec->control_data)
+ cq93vc_set_bias_level(codec, SND_SOC_BIAS_OFF);
+
+ snd_soc_free_pcms(socdev);
+ snd_soc_dapm_free(socdev);
+
+ iounmap(cq93vc->base);
+ release_mem_region(cq93vc->pbase, cq93vc->base_size);
+
+ kfree(codec);
+ kfree(cq93vc);
+
+ cq93vc_socdev = NULL;
+
+ snd_soc_unregister_dai(&cq93vc_dai);
+
+ return 0;
+}
+
+struct snd_soc_codec_device soc_codec_dev_cq93vc = {
+ .probe = cq93vc_probe,
+ .remove = cq93vc_remove,
+ .suspend = cq93vc_suspend,
+ .resume = cq93vc_resume,
+};
+EXPORT_SYMBOL_GPL(soc_codec_dev_cq93vc);
+
+static __init int cq93vc_init(void)
+{
+ return snd_soc_register_dai(&cq93vc_dai);
+}
+module_init(cq93vc_init);
+
+static __exit void cq93vc_exit(void)
+{
+ snd_soc_unregister_dai(&cq93vc_dai);
+}
+module_exit(cq93vc_exit);
+
+MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver");
+MODULE_AUTHOR("Miguel Aguilar");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/cq93vc.h b/sound/soc/codecs/cq93vc.h
new file mode 100644
index 0000000..8d37763
--- /dev/null
+++ b/sound/soc/codecs/cq93vc.h
@@ -0,0 +1,23 @@
+/*
+ * ALSA SoC CQ0093 Voice Codec Driver
+ *
+ * Copyright (C) 2009 Texas Instruments.
+ *
+ * Author: Miguel Aguilar <miguel.aguilar at ridgerun.com>
+ *
+ * Initial code: Hui Geng
+ *
+ * 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.
+ */
+
+#ifndef _CQ93VC_H
+#define _CQ93VC_H
+
+extern struct snd_soc_dai cq93vc_dai;
+extern struct snd_soc_codec_device soc_codec_dev_cq93vc;
+extern struct resource cq93vc_resources[];
+
+#endif
--
1.6.0.4
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