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Index: git/drivers/mfd/Kconfig
===================================================================
--- git.orig/drivers/mfd/Kconfig 2010-01-06 16:23:19.000000000 -0600
+++ git/drivers/mfd/Kconfig 2010-01-12 08:43:00.961383768 -0600
@@ -84,6 +84,17 @@
This driver can also be built as a module. If so, the module
will be called tps65010.
+config TPS6507x
+ tristate "TPS6507x Power Management / Touch Screen chips"
+ depends on I2C
+ help
+ If you say yes here you get support for the TPS6507x series of
+ Power Management / Touch Screen chips. These include voltage
+ regulators, lithium ion/polymer battery charging, touch screen
+ and other features that are often used in portable devices.
+ This driver can also be built as a module. If so, the module
+ will be called tps6507x.
+
config MENELAUS
bool "Texas Instruments TWL92330/Menelaus PM chip"
depends on I2C=y && ARCH_OMAP24XX
Index: git/drivers/mfd/Makefile
===================================================================
--- git.orig/drivers/mfd/Makefile 2010-01-06 16:23:19.000000000 -0600
+++ git/drivers/mfd/Makefile 2010-01-12 08:43:00.961383768 -0600
@@ -22,6 +22,7 @@
obj-$(CONFIG_MFD_WM8350_I2C) += wm8350-i2c.o
obj-$(CONFIG_TPS65010) += tps65010.o
+obj-$(CONFIG_TPS6507x) += tps6507x.o
obj-$(CONFIG_MENELAUS) += menelaus.o
obj-$(CONFIG_TWL4030_CORE) += twl4030-core.o twl4030-irq.o
Index: git/drivers/mfd/tps6507x.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ git/drivers/mfd/tps6507x.c 2010-01-12 08:53:53.009504942 -0600
@@ -0,0 +1,139 @@
+/*
+ * tps6507x.c -- TPS6507x chip family multi-function driver
+ *
+ * Copyright (c) 2010 RidgeRun (todd.fischer@ridgerun.com)
+ *
+ * Author: Todd Fischer
+ * todd.fischer@ridgerun.com
+ *
+ * Credits:
+ *
+ * Using code from wm8350-i2c.c, Wolfson Microelectronics PLC.
+ *
+ * For licencing details see kernel-base/COPYING
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/tps6507x.h>
+
+static int tps6507x_i2c_read_device(struct tps6507x_dev *tps6507x, char reg,
+ int bytes, void *dest)
+{
+ int ret;
+
+ ret = i2c_master_send(tps6507x->i2c_client, ®, 1);
+ if (ret < 0)
+ return ret;
+ ret = i2c_master_recv(tps6507x->i2c_client, dest, bytes);
+ if (ret < 0)
+ return ret;
+ if (ret != bytes)
+ return -EIO;
+ return 0;
+}
+
+static int tps6507x_i2c_write_device(struct tps6507x_dev *tps6507x, char reg,
+ int bytes, void *src)
+{
+ /* we add 1 byte for device register */
+ u8 msg[(TPS6507X_MAX_REGISTER << 1) + 1];
+ int ret;
+
+ if (bytes > ((TPS6507X_MAX_REGISTER << 1) + 1))
+ return -EINVAL;
+
+ msg[0] = reg;
+ memcpy(&msg[1], src, bytes);
+ ret = i2c_master_send(tps6507x->i2c_client, msg, bytes + 1);
+ if (ret < 0)
+ return ret;
+ if (ret != bytes + 1)
+ return -EIO;
+ return 0;
+}
+
+
+int tps6507x_device_init(struct tps6507x_dev *tps6507x, int irq,
+ struct tps6507x_board *pdata)
+{
+ int ret = 0;
+
+ return ret;
+}
+
+static int tps6507x_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct tps6507x_dev *tps6507x;
+ int ret = 0;
+
+ tps6507x = kzalloc(sizeof(struct tps6507x_dev), GFP_KERNEL);
+ if (tps6507x == NULL) {
+ kfree(i2c);
+ return -ENOMEM;
+ }
+
+ i2c_set_clientdata(i2c, tps6507x);
+ tps6507x->dev = &i2c->dev;
+ tps6507x->i2c_client = i2c;
+ tps6507x->read_dev = tps6507x_i2c_read_device;
+ tps6507x->write_dev = tps6507x_i2c_write_device;
+ mutex_init(&tps6507x->adc_mutex);
+
+ ret = tps6507x_device_init(tps6507x, i2c->irq, i2c->dev.platform_data);
+ if (ret < 0)
+ goto err;
+
+ return ret;
+
+err:
+ kfree(tps6507x);
+ return ret;
+}
+
+static int tps6507x_i2c_remove(struct i2c_client *i2c)
+{
+ struct tps6507x_dev *tps6507x = i2c_get_clientdata(i2c);
+
+ kfree(tps6507x);
+
+ return 0;
+}
+
+static const struct i2c_device_id tps6507x_i2c_id[] = {
+ { "tps6507x", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tps6507x_i2c_id);
+
+
+static struct i2c_driver tps6507x_i2c_driver = {
+ .driver = {
+ .name = "tps6507x",
+ .owner = THIS_MODULE,
+ },
+ .probe = tps6507x_i2c_probe,
+ .remove = tps6507x_i2c_remove,
+ .id_table = tps6507x_i2c_id,
+};
+
+static int __init tps6507x_i2c_init(void)
+{
+ return i2c_add_driver(&tps6507x_i2c_driver);
+}
+/* init early so consumer devices can complete system boot */
+subsys_initcall(tps6507x_i2c_init);
+
+static void __exit tps6507x_i2c_exit(void)
+{
+ i2c_del_driver(&tps6507x_i2c_driver);
+}
+module_exit(tps6507x_i2c_exit);
+
+MODULE_DESCRIPTION("TPS6507x chip family multi-function driver")
+MODULE_LICENSE("GPL");
Index: git/include/linux/mfd/tps6507x.h
===================================================================
--- git.orig/include/linux/mfd/tps6507x.h 2010-01-12 08:43:00.797384396 -0600
+++ git/include/linux/mfd/tps6507x.h 2010-01-12 08:53:28.437624848 -0600
@@ -131,6 +131,8 @@
/* VDCDC MASK */
#define TPS6507X_DEFDCDCX_DCDC_MASK 0X3F
+#define TPS6507X_MAX_REGISTER 0X19
+
/**
* struct tps6507x_board - packages regulator and touchscreen init data
* @tps6507x_regulator_data: regulator initialization values
@@ -142,4 +144,22 @@
struct regulator_init_data *tps6507x_pmic_init_data;
};
+/**
+ * struct tps6507x_dev - tps6507x sub-driver chip access routines
+ * @read_dev() - I2C register read function
+ * @write_dev() - I2C register write function
+ *
+ * Device data may be used to access the TPS6507x chip
+ */
+
+struct tps6507x_dev {
+ struct device *dev;
+ struct i2c_client *i2c_client;
+ int (*read_dev)(struct tps6507x_dev *tps6507x, char reg, int size,
+ void *dest);
+ int (*write_dev)(struct tps6507x_dev *tps6507x, char reg, int size,
+ void *src);
+ struct mutex adc_mutex;
+};
+
#endif /* __LINUX_MFD_TPS6507X_H */
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