Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / sound / soc / codecs / wm8727.c

diff --git a/kernel/sound/soc/codecs/wm8727.c b/kernel/sound/soc/codecs/wm8727.c
new file mode 100644 (file)
index 0000000..bb25a75
--- /dev/null
+++ b/kernel/sound/soc/codecs/wm8727.c
@@ -0,0 +1,88 @@
+/*
+ * wm8727.c
+ *
+ *  Created on: 15-Oct-2009
+ *      Author: neil.jones@imgtec.com
+ *
+ * Copyright (C) 2009 Imagination Technologies Ltd.
+ *
+ *  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/init.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/ac97_codec.h>
+#include <sound/initval.h>
+#include <sound/soc.h>
+
+static const struct snd_soc_dapm_widget wm8727_dapm_widgets[] = {
+SND_SOC_DAPM_OUTPUT("VOUTL"),
+SND_SOC_DAPM_OUTPUT("VOUTR"),
+};
+
+static const struct snd_soc_dapm_route wm8727_dapm_routes[] = {
+       { "VOUTL", NULL, "Playback" },
+       { "VOUTR", NULL, "Playback" },
+};
+
+/*
+ * Note this is a simple chip with no configuration interface, sample rate is
+ * determined automatically by examining the Master clock and Bit clock ratios
+ */
+#define WM8727_RATES  (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
+                       SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |\
+                       SNDRV_PCM_RATE_192000)
+
+
+static struct snd_soc_dai_driver wm8727_dai = {
+       .name = "wm8727-hifi",
+       .playback = {
+               .stream_name = "Playback",
+               .channels_min = 2,
+               .channels_max = 2,
+               .rates = WM8727_RATES,
+               .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
+               },
+};
+
+static struct snd_soc_codec_driver soc_codec_dev_wm8727 = {
+       .dapm_widgets = wm8727_dapm_widgets,
+       .num_dapm_widgets = ARRAY_SIZE(wm8727_dapm_widgets),
+       .dapm_routes = wm8727_dapm_routes,
+       .num_dapm_routes = ARRAY_SIZE(wm8727_dapm_routes),
+};
+
+static int wm8727_probe(struct platform_device *pdev)
+{
+       return snd_soc_register_codec(&pdev->dev,
+                       &soc_codec_dev_wm8727, &wm8727_dai, 1);
+}
+
+static int wm8727_remove(struct platform_device *pdev)
+{
+       snd_soc_unregister_codec(&pdev->dev);
+       return 0;
+}
+
+static struct platform_driver wm8727_codec_driver = {
+       .driver = {
+                       .name = "wm8727",
+       },
+
+       .probe = wm8727_probe,
+       .remove = wm8727_remove,
+};
+
+module_platform_driver(wm8727_codec_driver);
+
+MODULE_DESCRIPTION("ASoC wm8727 driver");
+MODULE_AUTHOR("Neil Jones");
+MODULE_LICENSE("GPL");