drivers/input/twl6030.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * TWL6030 input
   4  *
   5  * Copyright (C) 2016 Paul Kocialkowski <contact@paulk.fr>
   6  */
   7
   8 #include <twl6030.h>
   9
  10 int twl6030_input_power_button(void)
  11 {
  12         u8 value;
  13
  14         twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_STS_HW_CONDITIONS, &value);
  15
  16         /* Power button is active low. */
  17         if (value & TWL6030_STS_HW_CONDITIONS_PWRON)
  18                 return 0;
  19
  20         return 1;
  21 }
  22
  23 int twl6030_input_charger(void)
  24 {
  25         u8 value;
  26
  27         twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, TWL6030_CONTROLLER_STAT1,
  28                 &value);
  29
  30         if (value & TWL6030_CONTROLLER_STAT1_VAC_DET)
  31                 return 1;
  32
  33         return 0;
  34 }
  35
  36 int twl6030_input_usb(void)
  37 {
  38         u8 value;
  39
  40         twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, TWL6030_CONTROLLER_STAT1,
  41                 &value);
  42
  43         if (value & TWL6030_CONTROLLER_STAT1_VBUS_DET)
  44                 return 1;
  45
  46         return 0;
  47 }