include/linux/mfd/tps6105x.h

   1 /*
   2  * Copyright (C) 2011 ST-Ericsson SA
   3  * Written on behalf of Linaro for ST-Ericsson
   4  *
   5  * Author: Linus Walleij <linus.walleij@linaro.org>
   6  *
   7  * License terms: GNU General Public License (GPL) version 2
   8  */
   9 #ifndef MFD_TPS6105X_H
  10 #define MFD_TPS6105X_H
  11
  12 #include <linux/i2c.h>
  13 #include <linux/regulator/machine.h>
  14
  15 /*
  16  * Register definitions to all subdrivers
  17  */
  18 #define TPS6105X_REG_0                  0x00
  19 #define TPS6105X_REG0_MODE_SHIFT        6
  20 #define TPS6105X_REG0_MODE_MASK         (0x03<<6)
  21 /* These defines for both reg0 and reg1 */
  22 #define TPS6105X_REG0_MODE_SHUTDOWN     0x00
  23 #define TPS6105X_REG0_MODE_TORCH        0x01
  24 #define TPS6105X_REG0_MODE_TORCH_FLASH  0x02
  25 #define TPS6105X_REG0_MODE_VOLTAGE      0x03
  26 #define TPS6105X_REG0_VOLTAGE_SHIFT     4
  27 #define TPS6105X_REG0_VOLTAGE_MASK      (3<<4)
  28 #define TPS6105X_REG0_VOLTAGE_450       0
  29 #define TPS6105X_REG0_VOLTAGE_500       1
  30 #define TPS6105X_REG0_VOLTAGE_525       2
  31 #define TPS6105X_REG0_VOLTAGE_500_2     3
  32 #define TPS6105X_REG0_DIMMING_SHIFT     3
  33 #define TPS6105X_REG0_TORCHC_SHIFT      0
  34 #define TPS6105X_REG0_TORCHC_MASK       (7<<0)
  35 #define TPS6105X_REG0_TORCHC_0          0x00
  36 #define TPS6105X_REG0_TORCHC_50         0x01
  37 #define TPS6105X_REG0_TORCHC_75         0x02
  38 #define TPS6105X_REG0_TORCHC_100        0x03
  39 #define TPS6105X_REG0_TORCHC_150        0x04
  40 #define TPS6105X_REG0_TORCHC_200        0x05
  41 #define TPS6105X_REG0_TORCHC_250_400    0x06
  42 #define TPS6105X_REG0_TORCHC_250_500    0x07
  43 #define TPS6105X_REG_1                  0x01
  44 #define TPS6105X_REG1_MODE_SHIFT        6
  45 #define TPS6105X_REG1_MODE_MASK         (0x03<<6)
  46 #define TPS6105X_REG1_MODE_SHUTDOWN     0x00
  47 #define TPS6105X_REG1_MODE_TORCH        0x01
  48 #define TPS6105X_REG1_MODE_TORCH_FLASH  0x02
  49 #define TPS6105X_REG1_MODE_VOLTAGE      0x03
  50 #define TPS6105X_REG_2                  0x02
  51 #define TPS6105X_REG_3                  0x03
  52
  53 /**
  54  * enum tps6105x_mode - desired mode for the TPS6105x
  55  * @TPS6105X_MODE_SHUTDOWN: this instance is inactive, not used for anything
  56  * @TPS61905X_MODE_TORCH: this instance is used as a LED, usually a while
  57  *      LED, for example as backlight or flashlight. If this is set, the
  58  *      TPS6105X will register to the LED framework
  59  * @TPS6105X_MODE_TORCH_FLASH: this instance is used as a flashgun, usually
  60  *      in a camera
  61  * @TPS6105X_MODE_VOLTAGE: this instance is used as a voltage regulator and
  62  *      will register to the regulator framework
  63  */
  64 enum tps6105x_mode {
  65         TPS6105X_MODE_SHUTDOWN,
  66         TPS6105X_MODE_TORCH,
  67         TPS6105X_MODE_TORCH_FLASH,
  68         TPS6105X_MODE_VOLTAGE,
  69 };
  70
  71 /**
  72  * struct tps6105x_platform_data - TPS61905x platform data
  73  * @mode: what mode this instance shall be operated in,
  74  *      this is not selectable at runtime
  75  * @regulator_data: initialization data for the voltage
  76  *      regulator if used as a voltage source
  77  */
  78 struct tps6105x_platform_data {
  79         enum tps6105x_mode mode;
  80         struct regulator_init_data *regulator_data;
  81 };
  82
  83 /**
  84  * struct tps6105x - state holder for the TPS6105x drivers
  85  * @mutex: mutex to serialize I2C accesses
  86  * @i2c_client: corresponding I2C client
  87  * @regulator: regulator device if used in voltage mode
  88  */
  89 struct tps6105x {
  90         struct tps6105x_platform_data *pdata;
  91         struct mutex            lock;
  92         struct i2c_client       *client;
  93         struct regulator_dev    *regulator;
  94 };
  95
  96 extern int tps6105x_set(struct tps6105x *tps6105x, u8 reg, u8 value);
  97 extern int tps6105x_get(struct tps6105x *tps6105x, u8 reg, u8 *buf);
  98 extern int tps6105x_mask_and_set(struct tps6105x *tps6105x, u8 reg,
  99                                  u8 bitmask, u8 bitvalues);
 100
 101 #endif