---

yaml
---
r: 228001
b: refs/heads/master
c: 5b264a6
h: refs/heads/master
i:
  227999: c86ddd9
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2919fa54ef643364eab69bfff5a72e4aa50d3e39
+refs/heads/master: 5b264a624ebc9a082873aa06ea641cbdc760e6e1

trunk/drivers/staging/iio/meter/Kconfig

@@ -32,3 +32,30 @@ config ADE7759
 	help
 	  Say yes here to build support for Analog Devices ADE7758 Active Energy
 	  Metering IC with di/dt Sensor Interface.
+
+config ADE7854
+	tristate "Analog Devices ADE7854/58/68/78 Polyphase Multifunction Energy Metering IC Driver"
+	depends on SPI || I2C
+	help
+	  Say yes here to build support for Analog Devices ADE7854/58/68/78 Polyphase
+	  Multifunction Energy Metering IC Driver.
+
+config ADE7854_I2C
+	tristate "support I2C bus connection"
+	depends on ADE7854 && I2C
+	default y
+	help
+	  Say Y here if you have ADE7854/58/68/78 hooked to an I2C bus.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ade7854-i2c.
+
+config ADE7854_SPI
+	tristate "support SPI bus connection"
+	depends on ADE7854 && SPI
+	default y
+	help
+	  Say Y here if you have ADE7854/58/68/78 hooked to a SPI bus.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ade7854-spi.

trunk/drivers/staging/iio/meter/Makefile

@@ -10,3 +10,6 @@ ade7758-$(CONFIG_IIO_RING_BUFFER) += ade7758_ring.o ade7758_trigger.o
 obj-$(CONFIG_ADE7758) += ade7758.o
 
 obj-$(CONFIG_ADE7759) += ade7759.o
+obj-$(CONFIG_ADE7854) += ade7854.o
+obj-$(CONFIG_ADE7854_I2C) += ade7854-i2c.o
+obj-$(CONFIG_ADE7854_SPI) += ade7854-spi.o

trunk/drivers/staging/iio/meter/ade7854-i2c.c

@@ -0,0 +1,272 @@
+/*
+ * ADE7854/58/68/78 Polyphase Multifunction Energy Metering IC Driver (I2C Bus)
+ *
+ * Copyright 2010 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+
+#include "../iio.h"
+#include "ade7854.h"
+
+static int ade7854_i2c_write_reg_8(struct device *dev,
+		u16 reg_address,
+		u8 value)
+{
+	int ret;
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct ade7854_state *st = iio_dev_get_devdata(indio_dev);
+
+	mutex_lock(&st->buf_lock);
+	st->tx[0] = (reg_address >> 8) & 0xFF;
+	st->tx[1] = reg_address & 0xFF;
+	st->tx[2] = value;
+
+	ret = i2c_master_send(st->i2c, st->tx, 3);
+	mutex_unlock(&st->buf_lock);
+
+	return ret;
+}
+
+static int ade7854_i2c_write_reg_16(struct device *dev,
+		u16 reg_address,
+		u16 value)
+{
+	int ret;
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct ade7854_state *st = iio_dev_get_devdata(indio_dev);
+
+	mutex_lock(&st->buf_lock);
+	st->tx[0] = (reg_address >> 8) & 0xFF;
+	st->tx[1] = reg_address & 0xFF;
+	st->tx[2] = (value >> 8) & 0xFF;
+	st->tx[3] = value & 0xFF;
+
+	ret = i2c_master_send(st->i2c, st->tx, 4);
+	mutex_unlock(&st->buf_lock);
+
+	return ret;
+}
+
+static int ade7854_i2c_write_reg_24(struct device *dev,
+		u16 reg_address,
+		u32 value)
+{
+	int ret;
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct ade7854_state *st = iio_dev_get_devdata(indio_dev);
+
+	mutex_lock(&st->buf_lock);
+	st->tx[0] = (reg_address >> 8) & 0xFF;
+	st->tx[1] = reg_address & 0xFF;
+	st->tx[2] = (value >> 16) & 0xFF;
+	st->tx[3] = (value >> 8) & 0xFF;
+	st->tx[4] = value & 0xFF;
+
+	ret = i2c_master_send(st->i2c, st->tx, 5);
+	mutex_unlock(&st->buf_lock);
+
+	return ret;
+}
+
+static int ade7854_i2c_write_reg_32(struct device *dev,
+		u16 reg_address,
+		u32 value)
+{
+	int ret;
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct ade7854_state *st = iio_dev_get_devdata(indio_dev);
+
+	mutex_lock(&st->buf_lock);
+	st->tx[0] = (reg_address >> 8) & 0xFF;
+	st->tx[1] = reg_address & 0xFF;
+	st->tx[2] = (value >> 24) & 0xFF;
+	st->tx[3] = (value >> 16) & 0xFF;
+	st->tx[4] = (value >> 8) & 0xFF;
+	st->tx[5] = value & 0xFF;
+
+	ret = i2c_master_send(st->i2c, st->tx, 6);
+	mutex_unlock(&st->buf_lock);
+
+	return ret;
+}
+
+static int ade7854_i2c_read_reg_8(struct device *dev,
+		u16 reg_address,
+		u8 *val)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct ade7854_state *st = iio_dev_get_devdata(indio_dev);
+	int ret;
+
+	mutex_lock(&st->buf_lock);
+	st->tx[0] = (reg_address >> 8) & 0xFF;
+	st->tx[1] = reg_address & 0xFF;
+
+	ret = i2c_master_send(st->i2c, st->tx, 2);
+	if (ret)
+		goto out;
+
+	ret = i2c_master_recv(st->i2c, st->rx, 1);
+	if (ret)
+		goto out;
+
+	*val = st->rx[0];
+out:
+	mutex_unlock(&st->buf_lock);
+	return ret;
+}
+
+static int ade7854_i2c_read_reg_16(struct device *dev,
+		u16 reg_address,
+		u16 *val)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct ade7854_state *st = iio_dev_get_devdata(indio_dev);
+	int ret;
+
+	mutex_lock(&st->buf_lock);
+	st->tx[0] = (reg_address >> 8) & 0xFF;
+	st->tx[1] = reg_address & 0xFF;
+
+	ret = i2c_master_send(st->i2c, st->tx, 2);
+	if (ret)
+		goto out;
+
+	ret = i2c_master_recv(st->i2c, st->rx, 2);
+	if (ret)
+		goto out;
+
+	*val = (st->rx[0] << 8) | st->rx[1];
+out:
+	mutex_unlock(&st->buf_lock);
+	return ret;
+}
+
+static int ade7854_i2c_read_reg_24(struct device *dev,
+		u16 reg_address,
+		u32 *val)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct ade7854_state *st = iio_dev_get_devdata(indio_dev);
+	int ret;
+
+	mutex_lock(&st->buf_lock);
+	st->tx[0] = (reg_address >> 8) & 0xFF;
+	st->tx[1] = reg_address & 0xFF;
+
+	ret = i2c_master_send(st->i2c, st->tx, 2);
+	if (ret)
+		goto out;
+
+	ret = i2c_master_recv(st->i2c, st->rx, 3);
+	if (ret)
+		goto out;
+
+	*val = (st->rx[0] << 16) | (st->rx[1] << 8) | st->rx[2];
+out:
+	mutex_unlock(&st->buf_lock);
+	return ret;
+}
+
+static int ade7854_i2c_read_reg_32(struct device *dev,
+		u16 reg_address,
+		u32 *val)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct ade7854_state *st = iio_dev_get_devdata(indio_dev);
+	int ret;
+
+	mutex_lock(&st->buf_lock);
+	st->tx[0] = (reg_address >> 8) & 0xFF;
+	st->tx[1] = reg_address & 0xFF;
+
+	ret = i2c_master_send(st->i2c, st->tx, 2);
+	if (ret)
+		goto out;
+
+	ret = i2c_master_recv(st->i2c, st->rx, 3);
+	if (ret)
+		goto out;
+
+	*val = (st->rx[0] << 24) | (st->rx[1] << 16) | (st->rx[2] << 8) | st->rx[3];
+out:
+	mutex_unlock(&st->buf_lock);
+	return ret;
+}
+
+static int __devinit ade7854_i2c_probe(struct i2c_client *client,
+		const struct i2c_device_id *id)
+{
+	int ret;
+	struct ade7854_state *st = kzalloc(sizeof *st, GFP_KERNEL);
+	if (!st) {
+		ret =  -ENOMEM;
+		return ret;
+	}
+
+	i2c_set_clientdata(client, st);
+	st->read_reg_8 = ade7854_i2c_read_reg_8;
+	st->read_reg_16 = ade7854_i2c_read_reg_16;
+	st->read_reg_24 = ade7854_i2c_read_reg_24;
+	st->read_reg_32 = ade7854_i2c_read_reg_32;
+	st->write_reg_8 = ade7854_i2c_write_reg_8;
+	st->write_reg_16 = ade7854_i2c_write_reg_16;
+	st->write_reg_24 = ade7854_i2c_write_reg_24;
+	st->write_reg_32 = ade7854_i2c_write_reg_32;
+	st->i2c = client;
+	st->irq = client->irq;
+
+	ret = ade7854_probe(st, &client->dev);
+	if (ret) {
+		kfree(st);
+		return ret;
+	}
+
+	return ret;
+}
+
+static int __devexit ade7854_i2c_remove(struct i2c_client *client)
+{
+	return ade7854_remove(i2c_get_clientdata(client));
+}
+
+static const struct i2c_device_id ade7854_id[] = {
+	{ "ade7854", 0 },
+	{ "ade7858", 0 },
+	{ "ade7868", 0 },
+	{ "ade7878", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, ade7854_id);
+
+static struct i2c_driver ade7854_i2c_driver = {
+	.driver = {
+		.name = "ade7854",
+	},
+	.probe    = ade7854_i2c_probe,
+	.remove   = __devexit_p(ade7854_i2c_remove),
+	.id_table = ade7854_id,
+};
+
+static __init int ade7854_i2c_init(void)
+{
+	return i2c_add_driver(&ade7854_i2c_driver);
+}
+module_init(ade7854_i2c_init);
+
+static __exit void ade7854_i2c_exit(void)
+{
+	i2c_del_driver(&ade7854_i2c_driver);
+}
+module_exit(ade7854_i2c_exit);
+
+
+MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
+MODULE_DESCRIPTION("Analog Devices ADE7854/58/68/78 Polyphase Multifunction Energy Metering IC I2C Driver");
+MODULE_LICENSE("GPL v2");