Merge commit 'v2.6.34-rc1' into perf/urgent

Conflicts:
	tools/perf/util/probe-event.c

Merge reason: Pick up -rc1 and resolve the conflict as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 236 insertions, 0 deletions

diff --git a/drivers/mfd/88pm860x-i2c.c b/drivers/mfd/88pm860x-i2c.c
new file mode 100644
index 000000000000..c37e12bf3004
--- /dev/null
+++ b/drivers/mfd/88pm860x-i2c.c
@@ -0,0 +1,236 @@
+/*
+ * I2C driver for Marvell 88PM860x
+ *
+ * Copyright (C) 2009 Marvell International Ltd.
+ * 	Haojian Zhuang <haojian.zhuang@marvell.com>
+ *
+ * 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.
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/mfd/88pm860x.h>
+
+static inline int pm860x_read_device(struct i2c_client *i2c,
+				     int reg, int bytes, void *dest)
+{
+	unsigned char data;
+	int ret;
+
+	data = (unsigned char)reg;
+	ret = i2c_master_send(i2c, &data, 1);
+	if (ret < 0)
+		return ret;
+
+	ret = i2c_master_recv(i2c, dest, bytes);
+	if (ret < 0)
+		return ret;
+	return 0;
+}
+
+static inline int pm860x_write_device(struct i2c_client *i2c,
+				      int reg, int bytes, void *src)
+{
+	unsigned char buf[bytes + 1];
+	int ret;
+
+	buf[0] = (unsigned char)reg;
+	memcpy(&buf[1], src, bytes);
+
+	ret = i2c_master_send(i2c, buf, bytes + 1);
+	if (ret < 0)
+		return ret;
+	return 0;
+}
+
+int pm860x_reg_read(struct i2c_client *i2c, int reg)
+{
+	struct pm860x_chip *chip = i2c_get_clientdata(i2c);
+	unsigned char data;
+	int ret;
+
+	mutex_lock(&chip->io_lock);
+	ret = pm860x_read_device(i2c, reg, 1, &data);
+	mutex_unlock(&chip->io_lock);
+
+	if (ret < 0)
+		return ret;
+	else
+		return (int)data;
+}
+EXPORT_SYMBOL(pm860x_reg_read);
+
+int pm860x_reg_write(struct i2c_client *i2c, int reg,
+		     unsigned char data)
+{
+	struct pm860x_chip *chip = i2c_get_clientdata(i2c);
+	int ret;
+
+	mutex_lock(&chip->io_lock);
+	ret = pm860x_write_device(i2c, reg, 1, &data);
+	mutex_unlock(&chip->io_lock);
+
+	return ret;
+}
+EXPORT_SYMBOL(pm860x_reg_write);
+
+int pm860x_bulk_read(struct i2c_client *i2c, int reg,
+		     int count, unsigned char *buf)
+{
+	struct pm860x_chip *chip = i2c_get_clientdata(i2c);
+	int ret;
+
+	mutex_lock(&chip->io_lock);
+	ret = pm860x_read_device(i2c, reg, count, buf);
+	mutex_unlock(&chip->io_lock);
+
+	return ret;
+}
+EXPORT_SYMBOL(pm860x_bulk_read);
+
+int pm860x_bulk_write(struct i2c_client *i2c, int reg,
+		      int count, unsigned char *buf)
+{
+	struct pm860x_chip *chip = i2c_get_clientdata(i2c);
+	int ret;
+
+	mutex_lock(&chip->io_lock);
+	ret = pm860x_write_device(i2c, reg, count, buf);
+	mutex_unlock(&chip->io_lock);
+
+	return ret;
+}
+EXPORT_SYMBOL(pm860x_bulk_write);
+
+int pm860x_set_bits(struct i2c_client *i2c, int reg,
+		    unsigned char mask, unsigned char data)
+{
+	struct pm860x_chip *chip = i2c_get_clientdata(i2c);
+	unsigned char value;
+	int ret;
+
+	mutex_lock(&chip->io_lock);
+	ret = pm860x_read_device(i2c, reg, 1, &value);
+	if (ret < 0)
+		goto out;
+	value &= ~mask;
+	value |= data;
+	ret = pm860x_write_device(i2c, reg, 1, &value);
+out:
+	mutex_unlock(&chip->io_lock);
+	return ret;
+}
+EXPORT_SYMBOL(pm860x_set_bits);
+
+
+static const struct i2c_device_id pm860x_id_table[] = {
+	{ "88PM860x", 0 },
+	{}
+};
+MODULE_DEVICE_TABLE(i2c, pm860x_id_table);
+
+static int verify_addr(struct i2c_client *i2c)
+{
+	unsigned short addr_8607[] = {0x30, 0x34};
+	unsigned short addr_8606[] = {0x10, 0x11};
+	int size, i;
+
+	if (i2c == NULL)
+		return 0;
+	size = ARRAY_SIZE(addr_8606);
+	for (i = 0; i < size; i++) {
+		if (i2c->addr == *(addr_8606 + i))
+			return CHIP_PM8606;
+	}
+	size = ARRAY_SIZE(addr_8607);
+	for (i = 0; i < size; i++) {
+		if (i2c->addr == *(addr_8607 + i))
+			return CHIP_PM8607;
+	}
+	return 0;
+}
+
+static int __devinit pm860x_probe(struct i2c_client *client,
+				  const struct i2c_device_id *id)
+{
+	struct pm860x_platform_data *pdata = client->dev.platform_data;
+	struct pm860x_chip *chip;
+
+	if (!pdata) {
+		pr_info("No platform data in %s!\n", __func__);
+		return -EINVAL;
+	}
+
+	chip = kzalloc(sizeof(struct pm860x_chip), GFP_KERNEL);
+	if (chip == NULL)
+		return -ENOMEM;
+
+	chip->id = verify_addr(client);
+	chip->client = client;
+	i2c_set_clientdata(client, chip);
+	chip->dev = &client->dev;
+	mutex_init(&chip->io_lock);
+	dev_set_drvdata(chip->dev, chip);
+
+	/*
+	 * Both client and companion client shares same platform driver.
+	 * Driver distinguishes them by pdata->companion_addr.
+	 * pdata->companion_addr is only assigned if companion chip exists.
+	 * At the same time, the companion_addr shouldn't equal to client
+	 * address.
+	 */
+	if (pdata->companion_addr && (pdata->companion_addr != client->addr)) {
+		chip->companion_addr = pdata->companion_addr;
+		chip->companion = i2c_new_dummy(chip->client->adapter,
+						chip->companion_addr);
+		i2c_set_clientdata(chip->companion, chip);
+	}
+
+	pm860x_device_init(chip, pdata);
+	return 0;
+}
+
+static int __devexit pm860x_remove(struct i2c_client *client)
+{
+	struct pm860x_chip *chip = i2c_get_clientdata(client);
+
+	pm860x_device_exit(chip);
+	i2c_unregister_device(chip->companion);
+	i2c_set_clientdata(chip->companion, NULL);
+	i2c_set_clientdata(chip->client, NULL);
+	kfree(chip);
+	return 0;
+}
+
+static struct i2c_driver pm860x_driver = {
+	.driver	= {
+		.name	= "88PM860x",
+		.owner	= THIS_MODULE,
+	},
+	.probe		= pm860x_probe,
+	.remove		= __devexit_p(pm860x_remove),
+	.id_table	= pm860x_id_table,
+};
+
+static int __init pm860x_i2c_init(void)
+{
+	int ret;
+	ret = i2c_add_driver(&pm860x_driver);
+	if (ret != 0)
+		pr_err("Failed to register 88PM860x I2C driver: %d\n", ret);
+	return ret;
+}
+subsys_initcall(pm860x_i2c_init);
+
+static void __exit pm860x_i2c_exit(void)
+{
+	i2c_del_driver(&pm860x_driver);
+}
+module_exit(pm860x_i2c_exit);
+
+MODULE_DESCRIPTION("I2C Driver for Marvell 88PM860x");
+MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
+MODULE_LICENSE("GPL");