--- /dev/null
+/*
+ * ALSA SoC CQ0093 Voice Codec Driver for DaVinci platforms
+ *
+ * Copyright (C) 2010 Texas Instruments, Inc
+ *
+ * Author: Miguel Aguilar <miguel.aguilar@ridgerun.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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#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/platform_device.h>
+#include <linux/device.h>
+#include <linux/clk.h>
+#include <linux/mfd/davinci_voicecodec.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"
+
+static inline unsigned int cq93vc_read(struct snd_soc_codec *codec,
+ unsigned int reg)
+{
+ struct davinci_vc *davinci_vc = codec->control_data;
+
+ return readl(davinci_vc->base + reg);
+}
+
+static inline int cq93vc_write(struct snd_soc_codec *codec, unsigned int reg,
+ unsigned int value)
+{
+ struct davinci_vc *davinci_vc = codec->control_data;
+
+ writel(value, davinci_vc->base + reg);
+
+ return 0;
+}
+
+static const struct snd_kcontrol_new cq93vc_snd_controls[] = {
+ SOC_SINGLE("PGA Capture Volume", DAVINCI_VC_REG05, 0, 0x03, 0),
+ SOC_SINGLE("Mono DAC Playback Volume", DAVINCI_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, DAVINCI_VC_REG09) & ~DAVINCI_VC_REG09_MUTE;
+
+ if (mute)
+ cq93vc_write(codec, DAVINCI_VC_REG09,
+ reg | DAVINCI_VC_REG09_MUTE);
+ else
+ cq93vc_write(codec, DAVINCI_VC_REG09, reg);
+
+ 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 davinci_vc *davinci_vc = codec->control_data;
+
+ switch (freq) {
+ case 22579200:
+ case 27000000:
+ case 33868800:
+ davinci_vc->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:
+ cq93vc_write(codec, DAVINCI_VC_REG12,
+ DAVINCI_VC_REG12_POWER_ALL_ON);
+ break;
+ case SND_SOC_BIAS_PREPARE:
+ break;
+ case SND_SOC_BIAS_STANDBY:
+ cq93vc_write(codec, DAVINCI_VC_REG12,
+ DAVINCI_VC_REG12_POWER_ALL_OFF);
+ break;
+ case SND_SOC_BIAS_OFF:
+ /* force all power off */
+ cq93vc_write(codec, DAVINCI_VC_REG12,
+ DAVINCI_VC_REG12_POWER_ALL_OFF);
+ 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 = {
+ .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_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_codec *cq93vc_codec;
+
+static int cq93vc_probe(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct device *dev = &pdev->dev;
+ struct snd_soc_codec *codec;
+ int ret;
+
+ socdev->card->codec = cq93vc_codec;
+ codec = socdev->card->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);
+ return ret;
+ }
+
+ /* Set controls */
+ snd_soc_add_controls(codec, cq93vc_snd_controls,
+ ARRAY_SIZE(cq93vc_snd_controls));
+
+ /* Off, with power on */
+ cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+
+ return 0;
+}
+
+static int cq93vc_remove(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+
+ snd_soc_free_pcms(socdev);
+ snd_soc_dapm_free(socdev);
+
+ return 0;
+}
+
+struct snd_soc_codec_device soc_codec_dev_cq93vc = {
+ .probe = cq93vc_probe,
+ .remove = cq93vc_remove,
+ .resume = cq93vc_resume,
+};
+EXPORT_SYMBOL_GPL(soc_codec_dev_cq93vc);
+
+static __init int cq93vc_codec_probe(struct platform_device *pdev)
+{
+ struct davinci_vc *davinci_vc = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec;
+ int ret;
+
+ codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
+ if (codec == NULL) {
+ dev_dbg(davinci_vc->dev,
+ "could not allocate memory for codec data\n");
+ return -ENOMEM;
+ }
+
+ davinci_vc->cq93vc.codec = codec;
+
+ cq93vc_dai.dev = &pdev->dev;
+
+ mutex_init(&codec->mutex);
+ INIT_LIST_HEAD(&codec->dapm_widgets);
+ INIT_LIST_HEAD(&codec->dapm_paths);
+ codec->dev = &pdev->dev;
+ 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;
+ codec->control_data = davinci_vc;
+
+ cq93vc_codec = codec;
+
+ ret = snd_soc_register_codec(codec);
+ if (ret) {
+ dev_err(davinci_vc->dev, "failed to register codec\n");
+ goto fail1;
+ }
+
+ ret = snd_soc_register_dai(&cq93vc_dai);
+ if (ret) {
+ dev_err(davinci_vc->dev, "could register dai\n");
+ goto fail2;
+ }
+ return 0;
+
+fail2:
+ snd_soc_unregister_codec(codec);
+
+fail1:
+ kfree(codec);
+ cq93vc_codec = NULL;
+
+ return ret;
+}
+
+static int __devexit cq93vc_codec_remove(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec = socdev->card->codec;
+
+ snd_soc_unregister_dai(&cq93vc_dai);
+ snd_soc_unregister_codec(&codec);
+
+ kfree(codec);
+ cq93vc_codec = NULL;
+
+ return 0;
+}
+
+static struct platform_driver cq93vc_codec_driver = {
+ .driver = {
+ .name = "cq93vc",
+ .owner = THIS_MODULE,
+ },
+ .probe = cq93vc_codec_probe,
+ .remove = __devexit_p(cq93vc_codec_remove),
+};
+
+static __init int cq93vc_init(void)
+{
+ return platform_driver_probe(&cq93vc_codec_driver, cq93vc_codec_probe);
+}
+module_init(cq93vc_init);
+
+static __exit void cq93vc_exit(void)
+{
+ platform_driver_unregister(&cq93vc_codec_driver);
+}
+module_exit(cq93vc_exit);
+
+MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver");
+MODULE_AUTHOR("Miguel Aguilar");
+MODULE_LICENSE("GPL");
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff