Merge branch 'topic/asoc' into for-linus

4 files changed, 298 insertions, 1 deletions

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 570be139f9df..08f2d07bf56a 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -121,6 +121,12 @@ config TWL4030_POWER
 	  and load scripts controling which resources are switched off/on
 	  or reset when a sleep, wakeup or warm reset event occurs.
 
+config TWL4030_CODEC
+	bool
+	depends on TWL4030_CORE
+	select MFD_CORE
+	default n
+
 config MFD_TMIO
 	bool
 	default n
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index f3b277b90d40..af0fc903cec8 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -26,6 +26,7 @@ obj-$(CONFIG_MENELAUS)		+= menelaus.o
 
 obj-$(CONFIG_TWL4030_CORE)	+= twl4030-core.o twl4030-irq.o
 obj-$(CONFIG_TWL4030_POWER)    += twl4030-power.o
+obj-$(CONFIG_TWL4030_CODEC)	+= twl4030-codec.o
 
 obj-$(CONFIG_MFD_MC13783)	+= mc13783-core.o
 
diff --git a/drivers/mfd/twl4030-codec.c b/drivers/mfd/twl4030-codec.c
new file mode 100644
index 000000000000..77b914907d7c
--- /dev/null
+++ b/drivers/mfd/twl4030-codec.c
@@ -0,0 +1,276 @@
+/*
+ * MFD driver for twl4030 codec submodule
+ *
+ * Author:	Peter Ujfalusi <peter.ujfalusi@nokia.com>
+ *
+ * Copyright:   (C) 2009 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/platform_device.h>
+#include <linux/i2c/twl4030.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/twl4030-codec.h>
+
+#define TWL4030_CODEC_CELLS	2
+
+static struct platform_device *twl4030_codec_dev;
+
+struct twl4030_codec_resource {
+	int request_count;
+	u8 reg;
+	u8 mask;
+};
+
+struct twl4030_codec {
+	unsigned int audio_mclk;
+	struct mutex mutex;
+	struct twl4030_codec_resource resource[TWL4030_CODEC_RES_MAX];
+	struct mfd_cell cells[TWL4030_CODEC_CELLS];
+};
+
+/*
+ * Modify the resource, the function returns the content of the register
+ * after the modification.
+ */
+static int twl4030_codec_set_resource(enum twl4030_codec_res id, int enable)
+{
+	struct twl4030_codec *codec = platform_get_drvdata(twl4030_codec_dev);
+	u8 val;
+
+	twl4030_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &val,
+			codec->resource[id].reg);
+
+	if (enable)
+		val |= codec->resource[id].mask;
+	else
+		val &= ~codec->resource[id].mask;
+
+	twl4030_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE,
+					val, codec->resource[id].reg);
+
+	return val;
+}
+
+static inline int twl4030_codec_get_resource(enum twl4030_codec_res id)
+{
+	struct twl4030_codec *codec = platform_get_drvdata(twl4030_codec_dev);
+	u8 val;
+
+	twl4030_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &val,
+			codec->resource[id].reg);
+
+	return val;
+}
+
+/*
+ * Enable the resource.
+ * The function returns with error or the content of the register
+ */
+int twl4030_codec_enable_resource(enum twl4030_codec_res id)
+{
+	struct twl4030_codec *codec = platform_get_drvdata(twl4030_codec_dev);
+	int val;
+
+	if (id >= TWL4030_CODEC_RES_MAX) {
+		dev_err(&twl4030_codec_dev->dev,
+				"Invalid resource ID (%u)\n", id);
+		return -EINVAL;
+	}
+
+	mutex_lock(&codec->mutex);
+	if (!codec->resource[id].request_count)
+		/* Resource was disabled, enable it */
+		val = twl4030_codec_set_resource(id, 1);
+	else
+		val = twl4030_codec_get_resource(id);
+
+	codec->resource[id].request_count++;
+	mutex_unlock(&codec->mutex);
+
+	return val;
+}
+EXPORT_SYMBOL_GPL(twl4030_codec_enable_resource);
+
+/*
+ * Disable the resource.
+ * The function returns with error or the content of the register
+ */
+int twl4030_codec_disable_resource(unsigned id)
+{
+	struct twl4030_codec *codec = platform_get_drvdata(twl4030_codec_dev);
+	int val;
+
+	if (id >= TWL4030_CODEC_RES_MAX) {
+		dev_err(&twl4030_codec_dev->dev,
+				"Invalid resource ID (%u)\n", id);
+		return -EINVAL;
+	}
+
+	mutex_lock(&codec->mutex);
+	if (!codec->resource[id].request_count) {
+		dev_err(&twl4030_codec_dev->dev,
+			"Resource has been disabled already (%u)\n", id);
+		mutex_unlock(&codec->mutex);
+		return -EPERM;
+	}
+	codec->resource[id].request_count--;
+
+	if (!codec->resource[id].request_count)
+		/* Resource can be disabled now */
+		val = twl4030_codec_set_resource(id, 0);
+	else
+		val = twl4030_codec_get_resource(id);
+
+	mutex_unlock(&codec->mutex);
+
+	return val;
+}
+EXPORT_SYMBOL_GPL(twl4030_codec_disable_resource);
+
+unsigned int twl4030_codec_get_mclk(void)
+{
+	struct twl4030_codec *codec = platform_get_drvdata(twl4030_codec_dev);
+
+	return codec->audio_mclk;
+}
+EXPORT_SYMBOL_GPL(twl4030_codec_get_mclk);
+
+static int __devinit twl4030_codec_probe(struct platform_device *pdev)
+{
+	struct twl4030_codec *codec;
+	struct twl4030_codec_data *pdata = pdev->dev.platform_data;
+	struct mfd_cell *cell = NULL;
+	int ret, childs = 0;
+	u8 val;
+
+	if (!pdata) {
+		dev_err(&pdev->dev, "Platform data is missing\n");
+		return -EINVAL;
+	}
+
+	/* Configure APLL_INFREQ and disable APLL if enabled */
+	val = 0;
+	switch (pdata->audio_mclk) {
+	case 19200000:
+		val |= TWL4030_APLL_INFREQ_19200KHZ;
+		break;
+	case 26000000:
+		val |= TWL4030_APLL_INFREQ_26000KHZ;
+		break;
+	case 38400000:
+		val |= TWL4030_APLL_INFREQ_38400KHZ;
+		break;
+	default:
+		dev_err(&pdev->dev, "Invalid audio_mclk\n");
+		return -EINVAL;
+	}
+	twl4030_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE,
+					val, TWL4030_REG_APLL_CTL);
+
+	codec = kzalloc(sizeof(struct twl4030_codec), GFP_KERNEL);
+	if (!codec)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, codec);
+
+	twl4030_codec_dev = pdev;
+	mutex_init(&codec->mutex);
+	codec->audio_mclk = pdata->audio_mclk;
+
+	/* Codec power */
+	codec->resource[TWL4030_CODEC_RES_POWER].reg = TWL4030_REG_CODEC_MODE;
+	codec->resource[TWL4030_CODEC_RES_POWER].mask = TWL4030_CODECPDZ;
+
+	/* PLL */
+	codec->resource[TWL4030_CODEC_RES_APLL].reg = TWL4030_REG_APLL_CTL;
+	codec->resource[TWL4030_CODEC_RES_APLL].mask = TWL4030_APLL_EN;
+
+	if (pdata->audio) {
+		cell = &codec->cells[childs];
+		cell->name = "twl4030_codec_audio";
+		cell->platform_data = pdata->audio;
+		cell->data_size = sizeof(*pdata->audio);
+		childs++;
+	}
+	if (pdata->vibra) {
+		cell = &codec->cells[childs];
+		cell->name = "twl4030_codec_vibra";
+		cell->platform_data = pdata->vibra;
+		cell->data_size = sizeof(*pdata->vibra);
+		childs++;
+	}
+
+	if (childs)
+		ret = mfd_add_devices(&pdev->dev, pdev->id, codec->cells,
+				      childs, NULL, 0);
+	else {
+		dev_err(&pdev->dev, "No platform data found for childs\n");
+		ret = -ENODEV;
+	}
+
+	if (!ret)
+		return 0;
+
+	platform_set_drvdata(pdev, NULL);
+	kfree(codec);
+	twl4030_codec_dev = NULL;
+	return ret;
+}
+
+static int __devexit twl4030_codec_remove(struct platform_device *pdev)
+{
+	struct twl4030_codec *codec = platform_get_drvdata(pdev);
+
+	mfd_remove_devices(&pdev->dev);
+	platform_set_drvdata(pdev, NULL);
+	kfree(codec);
+	twl4030_codec_dev = NULL;
+
+	return 0;
+}
+
+MODULE_ALIAS("platform:twl4030_codec");
+
+static struct platform_driver twl4030_codec_driver = {
+	.probe		= twl4030_codec_probe,
+	.remove		= __devexit_p(twl4030_codec_remove),
+	.driver		= {
+		.owner	= THIS_MODULE,
+		.name	= "twl4030_codec",
+	},
+};
+
+static int __devinit twl4030_codec_init(void)
+{
+	return platform_driver_register(&twl4030_codec_driver);
+}
+module_init(twl4030_codec_init);
+
+static void __devexit twl4030_codec_exit(void)
+{
+	platform_driver_unregister(&twl4030_codec_driver);
+}
+module_exit(twl4030_codec_exit);
+
+MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@nokia.com>");
+MODULE_LICENSE("GPL");
+
diff --git a/drivers/mfd/twl4030-core.c b/drivers/mfd/twl4030-core.c
index a1c47ee95c0e..98b984e191d5 100644
--- a/drivers/mfd/twl4030-core.c
+++ b/drivers/mfd/twl4030-core.c
@@ -114,6 +114,12 @@
 #define twl_has_watchdog()        false
 #endif
 
+#if defined(CONFIG_TWL4030_CODEC) || defined(CONFIG_TWL4030_CODEC_MODULE)
+#define twl_has_codec()	true
+#else
+#define twl_has_codec()	false
+#endif
+
 /* Triton Core internal information (BEGIN) */
 
 /* Last - for index max*/
@@ -601,6 +607,14 @@ add_children(struct twl4030_platform_data *pdata, unsigned long features)
 			return PTR_ERR(child);
 	}
 
+	if (twl_has_codec() && pdata->codec) {
+		child = add_child(1, "twl4030_codec",
+				pdata->codec, sizeof(*pdata->codec),
+				false, 0, 0);
+		if (IS_ERR(child))
+			return PTR_ERR(child);
+	}
+
 	if (twl_has_regulator()) {
 		/*
 		child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1);
@@ -763,7 +777,7 @@ static int twl4030_remove(struct i2c_client *client)
 }
 
 /* NOTE:  this driver only handles a single twl4030/tps659x0 chip */
-static int
+static int __init
 twl4030_probe(struct i2c_client *client, const struct i2c_device_id *id)
 {
 	int				status;