kernel/include/linux/platform_data/ad5755.h

   1 /*
   2  * Copyright 2012 Analog Devices Inc.
   3  *
   4  * Licensed under the GPL-2.
   5  */
   6 #ifndef __LINUX_PLATFORM_DATA_AD5755_H__
   7 #define __LINUX_PLATFORM_DATA_AD5755_H__
   8
   9 enum ad5755_mode {
  10         AD5755_MODE_VOLTAGE_0V_5V               = 0,
  11         AD5755_MODE_VOLTAGE_0V_10V              = 1,
  12         AD5755_MODE_VOLTAGE_PLUSMINUS_5V        = 2,
  13         AD5755_MODE_VOLTAGE_PLUSMINUS_10V       = 3,
  14         AD5755_MODE_CURRENT_4mA_20mA            = 4,
  15         AD5755_MODE_CURRENT_0mA_20mA            = 5,
  16         AD5755_MODE_CURRENT_0mA_24mA            = 6,
  17 };
  18
  19 enum ad5755_dc_dc_phase {
  20         AD5755_DC_DC_PHASE_ALL_SAME_EDGE                = 0,
  21         AD5755_DC_DC_PHASE_A_B_SAME_EDGE_C_D_OPP_EDGE   = 1,
  22         AD5755_DC_DC_PHASE_A_C_SAME_EDGE_B_D_OPP_EDGE   = 2,
  23         AD5755_DC_DC_PHASE_90_DEGREE                    = 3,
  24 };
  25
  26 enum ad5755_dc_dc_freq {
  27         AD5755_DC_DC_FREQ_250kHZ = 0,
  28         AD5755_DC_DC_FREQ_410kHZ = 1,
  29         AD5755_DC_DC_FREQ_650kHZ = 2,
  30 };
  31
  32 enum ad5755_dc_dc_maxv {
  33         AD5755_DC_DC_MAXV_23V   = 0,
  34         AD5755_DC_DC_MAXV_24V5  = 1,
  35         AD5755_DC_DC_MAXV_27V   = 2,
  36         AD5755_DC_DC_MAXV_29V5  = 3,
  37 };
  38
  39 enum ad5755_slew_rate {
  40         AD5755_SLEW_RATE_64k    = 0,
  41         AD5755_SLEW_RATE_32k    = 1,
  42         AD5755_SLEW_RATE_16k    = 2,
  43         AD5755_SLEW_RATE_8k     = 3,
  44         AD5755_SLEW_RATE_4k     = 4,
  45         AD5755_SLEW_RATE_2k     = 5,
  46         AD5755_SLEW_RATE_1k     = 6,
  47         AD5755_SLEW_RATE_500    = 7,
  48         AD5755_SLEW_RATE_250    = 8,
  49         AD5755_SLEW_RATE_125    = 9,
  50         AD5755_SLEW_RATE_64     = 10,
  51         AD5755_SLEW_RATE_32     = 11,
  52         AD5755_SLEW_RATE_16     = 12,
  53         AD5755_SLEW_RATE_8      = 13,
  54         AD5755_SLEW_RATE_4      = 14,
  55         AD5755_SLEW_RATE_0_5    = 15,
  56 };
  57
  58 enum ad5755_slew_step_size {
  59         AD5755_SLEW_STEP_SIZE_1 = 0,
  60         AD5755_SLEW_STEP_SIZE_2 = 1,
  61         AD5755_SLEW_STEP_SIZE_4 = 2,
  62         AD5755_SLEW_STEP_SIZE_8 = 3,
  63         AD5755_SLEW_STEP_SIZE_16 = 4,
  64         AD5755_SLEW_STEP_SIZE_32 = 5,
  65         AD5755_SLEW_STEP_SIZE_64 = 6,
  66         AD5755_SLEW_STEP_SIZE_128 = 7,
  67         AD5755_SLEW_STEP_SIZE_256 = 8,
  68 };
  69
  70 /**
  71  * struct ad5755_platform_data - AD5755 DAC driver platform data
  72  * @ext_dc_dc_compenstation_resistor: Whether an external DC-DC converter
  73  * compensation register is used.
  74  * @dc_dc_phase: DC-DC converter phase.
  75  * @dc_dc_freq: DC-DC converter frequency.
  76  * @dc_dc_maxv: DC-DC maximum allowed boost voltage.
  77  * @dac.mode: The mode to be used for the DAC output.
  78  * @dac.ext_current_sense_resistor: Whether an external current sense resistor
  79  * is used.
  80  * @dac.enable_voltage_overrange: Whether to enable 20% voltage output overrange.
  81  * @dac.slew.enable: Whether to enable digital slew.
  82  * @dac.slew.rate: Slew rate of the digital slew.
  83  * @dac.slew.step_size: Slew step size of the digital slew.
  84  **/
  85 struct ad5755_platform_data {
  86         bool ext_dc_dc_compenstation_resistor;
  87         enum ad5755_dc_dc_phase dc_dc_phase;
  88         enum ad5755_dc_dc_freq dc_dc_freq;
  89         enum ad5755_dc_dc_maxv dc_dc_maxv;
  90
  91         struct {
  92                 enum ad5755_mode mode;
  93                 bool ext_current_sense_resistor;
  94                 bool enable_voltage_overrange;
  95                 struct {
  96                         bool enable;
  97                         enum ad5755_slew_rate rate;
  98                         enum ad5755_slew_step_size step_size;
  99                 } slew;
 100         } dac[4];
 101 };
 102
 103 #endif