drivers/input/twl6030.c

   1 /*
   2  * TWL6030 input
   3  *
   4  * Copyright (C) 2016 Paul Kocialkowski <contact@paulk.fr>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <twl6030.h>
  10
  11 int twl6030_input_power_button(void)
  12 {
  13         u8 value;
  14
  15         twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_STS_HW_CONDITIONS, &value);
  16
  17         /* Power button is active low. */
  18         if (value & TWL6030_STS_HW_CONDITIONS_PWRON)
  19                 return 0;
  20
  21         return 1;
  22 }
  23
  24 int twl6030_input_charger(void)
  25 {
  26         u8 value;
  27
  28         twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, TWL6030_CONTROLLER_STAT1,
  29                 &value);
  30
  31         if (value & TWL6030_CONTROLLER_STAT1_VAC_DET)
  32                 return 1;
  33
  34         return 0;
  35 }
  36
  37 int twl6030_input_usb(void)
  38 {
  39         u8 value;
  40
  41         twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, TWL6030_CONTROLLER_STAT1,
  42                 &value);
  43
  44         if (value & TWL6030_CONTROLLER_STAT1_VBUS_DET)
  45                 return 1;
  46
  47         return 0;
  48 }