1 files changed, 410 insertions, 0 deletions

diff --git a/sound/soc/imx/imx-3stack-cs42888.c b/sound/soc/imx/imx-3stack-cs42888.c
new file mode 100644
index 000000000000..935a4e544029
--- /dev/null
+++ b/sound/soc/imx/imx-3stack-cs42888.c
@@ -0,0 +1,410 @@
+/*
+ * Copyright (C) 2010 Freescale  Semiconductor, Inc. All Rights Reserved.
+ */
+
+/*
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/regulator/consumer.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/initval.h>
+#include <sound/soc-dai.h>
+
+#include <mach/hardware.h>
+#include <mach/clock.h>
+
+#include "imx-pcm.h"
+#include "imx-esai.h"
+#include "../codecs/cs42888.h"
+
+#if defined(CONFIG_MXC_ASRC) || defined(CONFIG_MXC_ASRC_MODULE)
+#include <linux/mxc_asrc.h>
+#endif
+
+#if defined(CONFIG_MXC_ASRC) || defined(CONFIG_MXC_ASRC_MODULE)
+static unsigned int asrc_rates[] = {
+	0,
+	8000,
+	11025,
+	16000,
+	22050,
+	32000,
+	44100,
+	48000,
+	64000,
+	88200,
+	96000,
+	176400,
+	192000,
+};
+
+struct asrc_esai {
+	unsigned int cpu_dai_rates;
+	unsigned int codec_dai_rates;
+	enum asrc_pair_index asrc_index;
+	unsigned int output_sample_rate;
+};
+
+static struct asrc_esai asrc_esai_data;
+
+#endif
+
+struct imx_3stack_pcm_state {
+	int lr_clk_active;
+};
+
+static struct imx_3stack_pcm_state clk_state;
+
+static int imx_3stack_startup(struct snd_pcm_substream *substream)
+{
+	clk_state.lr_clk_active++;
+#if defined(CONFIG_MXC_ASRC) || defined(CONFIG_MXC_ASRC_MODULE)
+	if (asrc_esai_data.output_sample_rate >= 32000) {
+		struct snd_soc_pcm_runtime *rtd = substream->private_data;
+		struct snd_soc_dai_link *pcm_link = rtd->dai;
+		struct snd_soc_dai *cpu_dai = pcm_link->cpu_dai;
+		struct snd_soc_dai *codec_dai = pcm_link->codec_dai;
+		asrc_esai_data.cpu_dai_rates = cpu_dai->playback.rates;
+		asrc_esai_data.codec_dai_rates = codec_dai->playback.rates;
+		cpu_dai->playback.rates =
+		    SNDRV_PCM_RATE_8000_192000 | SNDRV_PCM_RATE_KNOT;
+		codec_dai->playback.rates =
+		    SNDRV_PCM_RATE_8000_192000 | SNDRV_PCM_RATE_KNOT;
+	}
+#endif
+
+	return 0;
+}
+
+static void imx_3stack_shutdown(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai_link *pcm_link = rtd->dai;
+
+#if defined(CONFIG_MXC_ASRC) || defined(CONFIG_MXC_ASRC_MODULE)
+	if (asrc_esai_data.output_sample_rate >= 32000) {
+		struct snd_soc_dai *cpu_dai = pcm_link->cpu_dai;
+		codec_dai->playback.rates = asrc_esai_data.codec_dai_rates;
+		cpu_dai->playback.rates = asrc_esai_data.cpu_dai_rates;
+		asrc_release_pair(asrc_esai_data.asrc_index);
+	}
+#endif
+
+	clk_state.lr_clk_active--;
+}
+
+static int imx_3stack_surround_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_link *pcm_link = rtd->dai;
+	struct snd_soc_dai *cpu_dai = pcm_link->cpu_dai;
+	struct snd_soc_dai *codec_dai = pcm_link->codec_dai;
+	unsigned int rate = params_rate(params);
+	u32 dai_format;
+	unsigned int mclk_freq = 0, lrclk_ratio = 0;
+	unsigned int channel = params_channels(params);
+	struct imx_esai *esai_mode = (struct imx_esai *)cpu_dai->private_data;
+	if (clk_state.lr_clk_active > 1)
+		return 0;
+
+#if defined(CONFIG_MXC_ASRC) || defined(CONFIG_MXC_ASRC_MODULE)
+	if (asrc_esai_data.output_sample_rate >= 32000) {
+		unsigned int asrc_input_rate = rate;
+		struct mxc_runtime_data *pcm_data =
+		    substream->runtime->private_data;
+		struct asrc_config config;
+		int retVal = 0;;
+
+		retVal = asrc_req_pair(channel, &asrc_esai_data.asrc_index);
+		if (retVal < 0) {
+			pr_err("Fail to request asrc pair\n");
+			return -1;
+		}
+
+		config.pair = asrc_esai_data.asrc_index;
+		config.channel_num = channel;
+		config.input_sample_rate = asrc_input_rate;
+		config.output_sample_rate = asrc_esai_data.output_sample_rate;
+		config.inclk = INCLK_NONE;
+		config.word_width = 32;
+		config.outclk = OUTCLK_ESAI_TX;
+		retVal = asrc_config_pair(&config);
+		if (retVal < 0) {
+			pr_err("Fail to config asrc\n");
+			asrc_release_pair(asrc_esai_data.asrc_index);
+			return retVal;
+		}
+		rate = asrc_esai_data.output_sample_rate;
+		pcm_data->asrc_index = asrc_esai_data.asrc_index;
+		pcm_data->asrc_enable = 1;
+	}
+#endif
+
+	switch (rate) {
+	case 32000:
+		lrclk_ratio = 3;
+		mclk_freq = 12288000;
+		break;
+	case 48000:
+		lrclk_ratio = 3;
+		mclk_freq = 12288000;
+		break;
+	case 64000:
+		lrclk_ratio = 1;
+		mclk_freq = 12288000;
+		break;
+	case 96000:
+		lrclk_ratio = 1;
+		mclk_freq = 12288000;
+		break;
+	case 128000:
+		lrclk_ratio = 1;
+		mclk_freq = 12288000;
+		break;
+	case 44100:
+		lrclk_ratio = 3;
+		mclk_freq = 11289600;
+		break;
+	case 88200:
+		lrclk_ratio = 1;
+		mclk_freq = 11289600;
+		break;
+	case 176400:
+		lrclk_ratio = 0;
+		mclk_freq = 11289600;
+		break;
+	case 192000:
+		lrclk_ratio = 0;
+		mclk_freq = 12288000;
+		break;
+	default:
+		pr_info("Rate not support.\n");
+		return -EINVAL;;
+	}
+
+	dai_format = SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF |
+	    SND_SOC_DAIFMT_CBS_CFS;
+
+	esai_mode->sync_mode = 0;
+	esai_mode->network_mode = 1;
+
+	/* set cpu DAI configuration */
+	snd_soc_dai_set_fmt(cpu_dai, dai_format);
+	/* set i.MX active slot mask */
+	snd_soc_dai_set_tdm_slot(cpu_dai, channel == 1 ? 0x1 : 0x3, 2);
+	/* set the ESAI system clock as output */
+	snd_soc_dai_set_sysclk(cpu_dai, ESAI_CLK_EXTAL,
+		mclk_freq, SND_SOC_CLOCK_OUT);
+	/* set the ratio */
+	snd_soc_dai_set_clkdiv(cpu_dai, ESAI_TX_DIV_PSR, 1);
+	snd_soc_dai_set_clkdiv(cpu_dai, ESAI_TX_DIV_PM, 0);
+	snd_soc_dai_set_clkdiv(cpu_dai, ESAI_TX_DIV_FP, lrclk_ratio);
+	snd_soc_dai_set_clkdiv(cpu_dai, ESAI_RX_DIV_PSR, 1);
+	snd_soc_dai_set_clkdiv(cpu_dai, ESAI_RX_DIV_PM, 0);
+	snd_soc_dai_set_clkdiv(cpu_dai, ESAI_RX_DIV_FP, lrclk_ratio);
+
+
+	/* set codec DAI configuration */
+	snd_soc_dai_set_fmt(codec_dai, dai_format);
+	/* set codec Master clock */
+	snd_soc_dai_set_sysclk(codec_dai, 0, mclk_freq, SND_SOC_CLOCK_IN);
+
+	return 0;
+}
+
+static struct snd_soc_ops imx_3stack_surround_ops = {
+	.startup = imx_3stack_startup,
+	.shutdown = imx_3stack_shutdown,
+	.hw_params = imx_3stack_surround_hw_params,
+};
+
+static const struct snd_soc_dapm_widget imx_3stack_dapm_widgets[] = {
+	SND_SOC_DAPM_LINE("Line Out Jack", NULL),
+	SND_SOC_DAPM_LINE("Line In Jack", NULL),
+};
+
+static const struct snd_soc_dapm_route audio_map[] = {
+	/* Line out jack */
+	{"Line Out Jack", NULL, "AOUT1L"},
+	{"Line Out Jack", NULL, "AOUT1R"},
+	{"Line Out Jack", NULL, "AOUT2L"},
+	{"Line Out Jack", NULL, "AOUT2R"},
+	{"Line Out Jack", NULL, "AOUT3L"},
+	{"Line Out Jack", NULL, "AOUT3R"},
+	{"Line Out Jack", NULL, "AOUT4L"},
+	{"Line Out Jack", NULL, "AOUT4R"},
+	{"AIN1L", NULL, "Line In Jack"},
+	{"AIN1R", NULL, "Line In Jack"},
+	{"AIN2L", NULL, "Line In Jack"},
+	{"AIN2R", NULL, "Line In Jack"},
+};
+
+#if defined(CONFIG_MXC_ASRC) || defined(CONFIG_MXC_ASRC_MODULE)
+static int asrc_func;
+
+static const char *asrc_function[] =
+    { "disable", "32KHz", "44.1KHz",
+	"48KHz", "64KHz", "88.2KHz", "96KHz", "176.4KHz", "192KHz"
+};
+
+static const struct soc_enum asrc_enum[] = {
+	SOC_ENUM_SINGLE_EXT(9, asrc_function),
+};
+
+static int asrc_get_rate(struct snd_kcontrol *kcontrol,
+			 struct snd_ctl_elem_value *ucontrol)
+{
+	ucontrol->value.enumerated.item[0] = asrc_func;
+	return 0;
+}
+
+static int asrc_set_rate(struct snd_kcontrol *kcontrol,
+			 struct snd_ctl_elem_value *ucontrol)
+{
+	if (asrc_func == ucontrol->value.enumerated.item[0])
+		return 0;
+
+	asrc_func = ucontrol->value.enumerated.item[0];
+	asrc_esai_data.output_sample_rate = asrc_rates[asrc_func + 4];
+
+	return 1;
+}
+
+static const struct snd_kcontrol_new asrc_controls[] = {
+	SOC_ENUM_EXT("ASRC", asrc_enum[0], asrc_get_rate,
+		     asrc_set_rate),
+};
+
+#endif
+
+static int imx_3stack_cs42888_init(struct snd_soc_codec *codec)
+{
+
+#if defined(CONFIG_MXC_ASRC) || defined(CONFIG_MXC_ASRC_MODULE)
+	int i;
+	int ret;
+	for (i = 0; i < ARRAY_SIZE(asrc_controls); i++) {
+		ret = snd_ctl_add(codec->card,
+				  snd_soc_cnew(&asrc_controls[i], codec, NULL));
+		if (ret < 0)
+			return ret;
+	}
+	asrc_esai_data.output_sample_rate = asrc_rates[asrc_func + 4];
+#endif
+
+	snd_soc_dapm_new_controls(codec, imx_3stack_dapm_widgets,
+				  ARRAY_SIZE(imx_3stack_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 imx_3stack_dai = {
+	.name = "cs42888",
+	.stream_name = "cs42888",
+	.codec_dai = &cs42888_dai,
+	.init = imx_3stack_cs42888_init,
+	.ops = &imx_3stack_surround_ops,
+};
+
+static int imx_3stack_card_remove(struct platform_device *pdev)
+{
+	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+	kfree(socdev->codec_data);
+	return 0;
+}
+
+static struct snd_soc_card snd_soc_card_imx_3stack = {
+	.name = "imx-3stack",
+	.platform = &imx_soc_platform,
+	.dai_link = &imx_3stack_dai,
+	.num_links = 1,
+	.remove = imx_3stack_card_remove,
+};
+
+static struct snd_soc_device imx_3stack_snd_devdata = {
+	.card = &snd_soc_card_imx_3stack,
+	.codec_dev = &soc_codec_device_cs42888,
+};
+
+/*
+ * This function will register the snd_soc_pcm_link drivers.
+ */
+static int __devinit imx_3stack_cs42888_probe(struct platform_device *pdev)
+{
+	imx_3stack_dai.cpu_dai = &imx_esai_dai[2];
+	imx_3stack_dai.cpu_dai->dev = &pdev->dev;
+
+	return 0;
+}
+
+static int __devexit imx_3stack_cs42888_remove(struct platform_device *pdev)
+{
+	return 0;
+}
+
+static struct platform_driver imx_3stack_cs42888_driver = {
+	.probe = imx_3stack_cs42888_probe,
+	.remove = __devexit_p(imx_3stack_cs42888_remove),
+	.driver = {
+		   .name = "imx-3stack-cs42888",
+		   .owner = THIS_MODULE,
+		   },
+};
+
+static struct platform_device *imx_3stack_snd_device;
+
+static int __init imx_3stack_asoc_init(void)
+{
+	int ret;
+	ret = platform_driver_register(&imx_3stack_cs42888_driver);
+	if (ret < 0)
+		goto exit;
+
+	imx_3stack_snd_device = platform_device_alloc("soc-audio", 1);
+	if (!imx_3stack_snd_device)
+		goto err_device_alloc;
+	platform_set_drvdata(imx_3stack_snd_device, &imx_3stack_snd_devdata);
+	imx_3stack_snd_devdata.dev = &imx_3stack_snd_device->dev;
+	ret = platform_device_add(imx_3stack_snd_device);
+	if (0 == ret && snd_soc_card_imx_3stack.codec != NULL)
+		goto exit;
+
+	platform_device_unregister(imx_3stack_snd_device);
+err_device_alloc:
+	platform_driver_unregister(&imx_3stack_cs42888_driver);
+exit:
+	return ret;
+}
+
+static void __exit imx_3stack_asoc_exit(void)
+{
+	platform_driver_unregister(&imx_3stack_cs42888_driver);
+	platform_device_unregister(imx_3stack_snd_device);
+}
+
+module_init(imx_3stack_asoc_init);
+module_exit(imx_3stack_asoc_exit);
+
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("ALSA SoC cs42888 imx_3stack");
+MODULE_LICENSE("GPL");