Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / sound / soc / codecs / cs42xx8-i2c.c

diff --git a/kernel/sound/soc/codecs/cs42xx8-i2c.c b/kernel/sound/soc/codecs/cs42xx8-i2c.c
new file mode 100644 (file)
index 0000000..657dce2
--- /dev/null
+++ b/kernel/sound/soc/codecs/cs42xx8-i2c.c
@@ -0,0 +1,64 @@
+/*
+ * Cirrus Logic CS42448/CS42888 Audio CODEC DAI I2C driver
+ *
+ * Copyright (C) 2014 Freescale Semiconductor, Inc.
+ *
+ * Author: Nicolin Chen <Guangyu.Chen@freescale.com>
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <sound/soc.h>
+
+#include "cs42xx8.h"
+
+static int cs42xx8_i2c_probe(struct i2c_client *i2c,
+                            const struct i2c_device_id *id)
+{
+       u32 ret = cs42xx8_probe(&i2c->dev,
+                       devm_regmap_init_i2c(i2c, &cs42xx8_regmap_config));
+       if (ret)
+               return ret;
+
+       pm_runtime_enable(&i2c->dev);
+       pm_request_idle(&i2c->dev);
+
+       return 0;
+}
+
+static int cs42xx8_i2c_remove(struct i2c_client *i2c)
+{
+       snd_soc_unregister_codec(&i2c->dev);
+       pm_runtime_disable(&i2c->dev);
+
+       return 0;
+}
+
+static struct i2c_device_id cs42xx8_i2c_id[] = {
+       {"cs42448", (kernel_ulong_t)&cs42448_data},
+       {"cs42888", (kernel_ulong_t)&cs42888_data},
+       {}
+};
+MODULE_DEVICE_TABLE(i2c, cs42xx8_i2c_id);
+
+static struct i2c_driver cs42xx8_i2c_driver = {
+       .driver = {
+               .name = "cs42xx8",
+               .owner = THIS_MODULE,
+               .pm = &cs42xx8_pm,
+       },
+       .probe = cs42xx8_i2c_probe,
+       .remove = cs42xx8_i2c_remove,
+       .id_table = cs42xx8_i2c_id,
+};
+
+module_i2c_driver(cs42xx8_i2c_driver);
+
+MODULE_DESCRIPTION("Cirrus Logic CS42448/CS42888 ALSA SoC Codec I2C Driver");
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_LICENSE("GPL");