mfd: Add a core driver for TI TPS61050/TPS61052 chips v2

The TPS61050/TPS61052 are boost converters, LED drivers, LED flash
drivers and a simple GPIO pin chips.

Cc: Liam Girdwood <lrg@slimlogic.co.uk>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Jonas Aberg <jonas.aberg@stericsson.com>
Cc: Ola Lilja <ola.o.lilja@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 95 insertions, 0 deletions

diff --git a/include/linux/mfd/tps6105x.h b/include/linux/mfd/tps6105x.h
new file mode 100644
index 000000000000..f259244a56bd
--- /dev/null
+++ b/include/linux/mfd/tps6105x.h
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2011 ST-Ericsson SA
+ * Written on behalf of Linaro for ST-Ericsson
+ *
+ * Author: Linus Walleij <linus.walleij@linaro.org>
+ *
+ * License terms: GNU General Public License (GPL) version 2
+ */
+#ifndef MFD_TPS6105X_H
+#define MFD_TPS6105X_H
+
+#include <linux/i2c.h>
+
+/*
+ * Register definitions to all subdrivers
+ */
+#define TPS6105X_REG_0                  0x00
+#define TPS6105X_REG0_MODE_SHIFT        6
+#define TPS6105X_REG0_MODE_MASK         (0x03<<6)
+/* These defines for both reg0 and reg1 */
+#define TPS6105X_REG0_MODE_SHUTDOWN     0x00
+#define TPS6105X_REG0_MODE_TORCH        0x01
+#define TPS6105X_REG0_MODE_TORCH_FLASH  0x02
+#define TPS6105X_REG0_MODE_VOLTAGE      0x03
+#define TPS6105X_REG0_VOLTAGE_SHIFT     4
+#define TPS6105X_REG0_VOLTAGE_MASK      (3<<4)
+#define TPS6105X_REG0_VOLTAGE_450       0
+#define TPS6105X_REG0_VOLTAGE_500       1
+#define TPS6105X_REG0_VOLTAGE_525       2
+#define TPS6105X_REG0_VOLTAGE_500_2     3
+#define TPS6105X_REG0_DIMMING_SHIFT     3
+#define TPS6105X_REG0_TORCHC_SHIFT      0
+#define TPS6105X_REG0_TORCHC_MASK       (7<<0)
+#define TPS6105X_REG0_TORCHC_0          0x00
+#define TPS6105X_REG0_TORCHC_50         0x01
+#define TPS6105X_REG0_TORCHC_75         0x02
+#define TPS6105X_REG0_TORCHC_100        0x03
+#define TPS6105X_REG0_TORCHC_150        0x04
+#define TPS6105X_REG0_TORCHC_200        0x05
+#define TPS6105X_REG0_TORCHC_250_400    0x06
+#define TPS6105X_REG0_TORCHC_250_500    0x07
+#define TPS6105X_REG_1                  0x01
+#define TPS6105X_REG1_MODE_SHIFT        6
+#define TPS6105X_REG1_MODE_MASK         (0x03<<6)
+#define TPS6105X_REG1_MODE_SHUTDOWN     0x00
+#define TPS6105X_REG1_MODE_TORCH        0x01
+#define TPS6105X_REG1_MODE_TORCH_FLASH  0x02
+#define TPS6105X_REG1_MODE_VOLTAGE      0x03
+#define TPS6105X_REG_2                  0x02
+#define TPS6105X_REG_3                  0x03
+
+/**
+ * enum tps6105x_mode - desired mode for the TPS6105x
+ * @TPS6105X_MODE_SHUTDOWN: this instance is inactive, not used for anything
+ * @TPS61905X_MODE_TORCH: this instance is used as a LED, usually a while
+ *      LED, for example as backlight or flashlight. If this is set, the
+ *      TPS6105X will register to the LED framework
+ * @TPS6105X_MODE_TORCH_FLASH: this instance is used as a flashgun, usually
+ *      in a camera
+ * @TPS6105X_MODE_VOLTAGE: this instance is used as a voltage regulator and
+ *      will register to the regulator framework
+ */
+enum tps6105x_mode {
+        TPS6105X_MODE_SHUTDOWN,
+        TPS6105X_MODE_TORCH,
+        TPS6105X_MODE_TORCH_FLASH,
+        TPS6105X_MODE_VOLTAGE,
+};
+
+/**
+ * struct tps6105x_platform_data - TPS61905x platform data
+ * @mode: what mode this instance shall be operated in,
+ *      this is not selectable at runtime
+ */
+struct tps6105x_platform_data {
+        enum tps6105x_mode mode;
+};
+
+/**
+ * struct tps6105x - state holder for the TPS6105x drivers
+ * @mutex: mutex to serialize I2C accesses
+ * @i2c_client: corresponding I2C client
+ */
+struct tps6105x {
+        struct tps6105x_platform_data *pdata;
+        struct mutex            lock;
+        struct i2c_client       *client;
+};
+
+extern int tps6105x_set(struct tps6105x *tps6105x, u8 reg, u8 value);
+extern int tps6105x_get(struct tps6105x *tps6105x, u8 reg, u8 *buf);
+extern int tps6105x_mask_and_set(struct tps6105x *tps6105x, u8 reg,
+                                 u8 bitmask, u8 bitvalues);
+
+#endif