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Diffstat (limited to 'sound/soc/imx/eukrea-tlv320.c')
-rw-r--r--sound/soc/imx/eukrea-tlv320.c137
1 files changed, 137 insertions, 0 deletions
diff --git a/sound/soc/imx/eukrea-tlv320.c b/sound/soc/imx/eukrea-tlv320.c
new file mode 100644
index 000000000000..f15dfbdc47ee
--- /dev/null
+++ b/sound/soc/imx/eukrea-tlv320.c
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+/*
+ * eukrea-tlv320.c -- SoC audio for eukrea_cpuimxXX in I2S mode
+ *
+ * Copyright 2010 Eric Bénard, Eukréa Electromatique <eric@eukrea.com>
+ *
+ * based on sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c
+ * which is Copyright 2009 Simtec Electronics
+ * and on sound/soc/imx/phycore-ac97.c which is
+ * Copyright 2009 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
+ *
+ * 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/device.h>
+#include <linux/i2c.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <asm/mach-types.h>
+
+#include "../codecs/tlv320aic23.h"
+#include "imx-ssi.h"
+
+#define CODEC_CLOCK 12000000
+
+static int eukrea_tlv320_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 *codec_dai = rtd->dai->codec_dai;
+ struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+ int ret;
+
+ ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBM_CFM);
+ if (ret) {
+ pr_err("%s: failed set cpu dai format\n", __func__);
+ return ret;
+ }
+
+ ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBM_CFM);
+ if (ret) {
+ pr_err("%s: failed set codec dai format\n", __func__);
+ return ret;
+ }
+
+ ret = snd_soc_dai_set_sysclk(codec_dai, 0,
+ CODEC_CLOCK, SND_SOC_CLOCK_OUT);
+ if (ret) {
+ pr_err("%s: failed setting codec sysclk\n", __func__);
+ return ret;
+ }
+ snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffc, 0xffffffc, 2, 0);
+
+ ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0,
+ SND_SOC_CLOCK_IN);
+ if (ret) {
+ pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static struct snd_soc_ops eukrea_tlv320_snd_ops = {
+ .hw_params = eukrea_tlv320_hw_params,
+};
+
+static struct snd_soc_dai_link eukrea_tlv320_dai = {
+ .name = "tlv320aic23",
+ .stream_name = "TLV320AIC23",
+ .codec_dai = &tlv320aic23_dai,
+ .ops = &eukrea_tlv320_snd_ops,
+};
+
+static struct snd_soc_card eukrea_tlv320 = {
+ .name = "cpuimx-audio",
+ .platform = &imx_soc_platform,
+ .dai_link = &eukrea_tlv320_dai,
+ .num_links = 1,
+};
+
+static struct snd_soc_device eukrea_tlv320_snd_devdata = {
+ .card = &eukrea_tlv320,
+ .codec_dev = &soc_codec_dev_tlv320aic23,
+};
+
+static struct platform_device *eukrea_tlv320_snd_device;
+
+static int __init eukrea_tlv320_init(void)
+{
+ int ret;
+
+ if (!machine_is_eukrea_cpuimx27() && !machine_is_eukrea_cpuimx25sd()
+ && !machine_is_eukrea_cpuimx35sd())
+ /* return happy. We might run on a totally different machine */
+ return 0;
+
+ eukrea_tlv320_snd_device = platform_device_alloc("soc-audio", -1);
+ if (!eukrea_tlv320_snd_device)
+ return -ENOMEM;
+
+ eukrea_tlv320_dai.cpu_dai = &imx_ssi_pcm_dai[0];
+
+ platform_set_drvdata(eukrea_tlv320_snd_device, &eukrea_tlv320_snd_devdata);
+ eukrea_tlv320_snd_devdata.dev = &eukrea_tlv320_snd_device->dev;
+ ret = platform_device_add(eukrea_tlv320_snd_device);
+
+ if (ret) {
+ printk(KERN_ERR "ASoC: Platform device allocation failed\n");
+ platform_device_put(eukrea_tlv320_snd_device);
+ }
+
+ return ret;
+}
+
+static void __exit eukrea_tlv320_exit(void)
+{
+ platform_device_unregister(eukrea_tlv320_snd_device);
+}
+
+module_init(eukrea_tlv320_init);
+module_exit(eukrea_tlv320_exit);
+
+MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>");
+MODULE_DESCRIPTION("CPUIMX ALSA SoC driver");
+MODULE_LICENSE("GPL");