Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / sound / soc / cirrus / snappercl15.c

diff --git a/kernel/sound/soc/cirrus/snappercl15.c b/kernel/sound/soc/cirrus/snappercl15.c
new file mode 100644 (file)
index 0000000..98089df
--- /dev/null
+++ b/kernel/sound/soc/cirrus/snappercl15.c
@@ -0,0 +1,136 @@
+/*
+ * snappercl15.c -- SoC audio for Bluewater Systems Snapper CL15 module
+ *
+ * Copyright (C) 2008 Bluewater Systems Ltd
+ * Author: Ryan Mallon
+ *
+ *  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/platform_device.h>
+#include <linux/module.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+
+#include <asm/mach-types.h>
+#include <mach/hardware.h>
+
+#include "../codecs/tlv320aic23.h"
+
+#define CODEC_CLOCK 5644800
+
+static int snappercl15_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->codec_dai;
+       struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+       int err;
+
+       err = snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, 
+                                    SND_SOC_CLOCK_IN);
+       if (err)
+               return err;
+
+       err = snd_soc_dai_set_sysclk(cpu_dai, 0, CODEC_CLOCK, 
+                                    SND_SOC_CLOCK_OUT);
+       if (err)
+               return err;
+
+       return 0;
+}
+
+static struct snd_soc_ops snappercl15_ops = {
+       .hw_params      = snappercl15_hw_params,
+};
+
+static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
+       SND_SOC_DAPM_HP("Headphone Jack", NULL),
+       SND_SOC_DAPM_LINE("Line In", NULL),
+       SND_SOC_DAPM_MIC("Mic Jack", NULL),
+};
+
+static const struct snd_soc_dapm_route audio_map[] = {
+       {"Headphone Jack", NULL, "LHPOUT"},
+       {"Headphone Jack", NULL, "RHPOUT"},
+
+       {"LLINEIN", NULL, "Line In"},
+       {"RLINEIN", NULL, "Line In"},
+
+       {"MICIN", NULL, "Mic Jack"},
+};
+
+static struct snd_soc_dai_link snappercl15_dai = {
+       .name           = "tlv320aic23",
+       .stream_name    = "AIC23",
+       .cpu_dai_name   = "ep93xx-i2s",
+       .codec_dai_name = "tlv320aic23-hifi",
+       .codec_name     = "tlv320aic23-codec.0-001a",
+       .platform_name  = "ep93xx-i2s",
+       .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_IF |
+                         SND_SOC_DAIFMT_CBS_CFS,
+       .ops            = &snappercl15_ops,
+};
+
+static struct snd_soc_card snd_soc_snappercl15 = {
+       .name           = "Snapper CL15",
+       .owner          = THIS_MODULE,
+       .dai_link       = &snappercl15_dai,
+       .num_links      = 1,
+
+       .dapm_widgets           = tlv320aic23_dapm_widgets,
+       .num_dapm_widgets       = ARRAY_SIZE(tlv320aic23_dapm_widgets),
+       .dapm_routes            = audio_map,
+       .num_dapm_routes        = ARRAY_SIZE(audio_map),
+};
+
+static int snappercl15_probe(struct platform_device *pdev)
+{
+       struct snd_soc_card *card = &snd_soc_snappercl15;
+       int ret;
+
+       ret = ep93xx_i2s_acquire();
+       if (ret)
+               return ret;
+
+       card->dev = &pdev->dev;
+
+       ret = snd_soc_register_card(card);
+       if (ret) {
+               dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
+                       ret);
+               ep93xx_i2s_release();
+       }
+
+       return ret;
+}
+
+static int snappercl15_remove(struct platform_device *pdev)
+{
+       struct snd_soc_card *card = platform_get_drvdata(pdev);
+
+       snd_soc_unregister_card(card);
+       ep93xx_i2s_release();
+
+       return 0;
+}
+
+static struct platform_driver snappercl15_driver = {
+       .driver         = {
+               .name   = "snappercl15-audio",
+       },
+       .probe          = snappercl15_probe,
+       .remove         = snappercl15_remove,
+};
+
+module_platform_driver(snappercl15_driver);
+
+MODULE_AUTHOR("Ryan Mallon");
+MODULE_DESCRIPTION("ALSA SoC Snapper CL15");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:snappercl15-audio");