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Diffstat (limited to 'sound/soc/imx/imx-3stack-cs42888.c')
-rw-r--r--sound/soc/imx/imx-3stack-cs42888.c410
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");