include/linux/i2c/adp8870.h

   1 /*
   2  * Definitions and platform data for Analog Devices
   3  * Backlight drivers ADP8870
   4  *
   5  * Copyright 2009-2010 Analog Devices Inc.
   6  *
   7  * Licensed under the GPL-2 or later.
   8  */
   9
  10 #ifndef __LINUX_I2C_ADP8870_H
  11 #define __LINUX_I2C_ADP8870_H
  12
  13 #define ID_ADP8870              8870
  14
  15 #define ADP8870_MAX_BRIGHTNESS  0x7F
  16 #define FLAG_OFFT_SHIFT 8
  17
  18 /*
  19  * LEDs subdevice platform data
  20  */
  21
  22 #define ADP8870_LED_DIS_BLINK   (0 << FLAG_OFFT_SHIFT)
  23 #define ADP8870_LED_OFFT_600ms  (1 << FLAG_OFFT_SHIFT)
  24 #define ADP8870_LED_OFFT_1200ms (2 << FLAG_OFFT_SHIFT)
  25 #define ADP8870_LED_OFFT_1800ms (3 << FLAG_OFFT_SHIFT)
  26
  27 #define ADP8870_LED_ONT_200ms   0
  28 #define ADP8870_LED_ONT_600ms   1
  29 #define ADP8870_LED_ONT_800ms   2
  30 #define ADP8870_LED_ONT_1200ms  3
  31
  32 #define ADP8870_LED_D7          (7)
  33 #define ADP8870_LED_D6          (6)
  34 #define ADP8870_LED_D5          (5)
  35 #define ADP8870_LED_D4          (4)
  36 #define ADP8870_LED_D3          (3)
  37 #define ADP8870_LED_D2          (2)
  38 #define ADP8870_LED_D1          (1)
  39
  40 /*
  41  * Backlight subdevice platform data
  42  */
  43
  44 #define ADP8870_BL_D7           (1 << 6)
  45 #define ADP8870_BL_D6           (1 << 5)
  46 #define ADP8870_BL_D5           (1 << 4)
  47 #define ADP8870_BL_D4           (1 << 3)
  48 #define ADP8870_BL_D3           (1 << 2)
  49 #define ADP8870_BL_D2           (1 << 1)
  50 #define ADP8870_BL_D1           (1 << 0)
  51
  52 #define ADP8870_FADE_T_DIS      0       /* Fade Timer Disabled */
  53 #define ADP8870_FADE_T_300ms    1       /* 0.3 Sec */
  54 #define ADP8870_FADE_T_600ms    2
  55 #define ADP8870_FADE_T_900ms    3
  56 #define ADP8870_FADE_T_1200ms   4
  57 #define ADP8870_FADE_T_1500ms   5
  58 #define ADP8870_FADE_T_1800ms   6
  59 #define ADP8870_FADE_T_2100ms   7
  60 #define ADP8870_FADE_T_2400ms   8
  61 #define ADP8870_FADE_T_2700ms   9
  62 #define ADP8870_FADE_T_3000ms   10
  63 #define ADP8870_FADE_T_3500ms   11
  64 #define ADP8870_FADE_T_4000ms   12
  65 #define ADP8870_FADE_T_4500ms   13
  66 #define ADP8870_FADE_T_5000ms   14
  67 #define ADP8870_FADE_T_5500ms   15      /* 5.5 Sec */
  68
  69 #define ADP8870_FADE_LAW_LINEAR 0
  70 #define ADP8870_FADE_LAW_SQUARE 1
  71 #define ADP8870_FADE_LAW_CUBIC1 2
  72 #define ADP8870_FADE_LAW_CUBIC2 3
  73
  74 #define ADP8870_BL_AMBL_FILT_80ms       0       /* Light sensor filter time */
  75 #define ADP8870_BL_AMBL_FILT_160ms      1
  76 #define ADP8870_BL_AMBL_FILT_320ms      2
  77 #define ADP8870_BL_AMBL_FILT_640ms      3
  78 #define ADP8870_BL_AMBL_FILT_1280ms     4
  79 #define ADP8870_BL_AMBL_FILT_2560ms     5
  80 #define ADP8870_BL_AMBL_FILT_5120ms     6
  81 #define ADP8870_BL_AMBL_FILT_10240ms    7       /* 10.24 sec */
  82
  83 /*
  84  * Blacklight current 0..30mA
  85  */
  86 #define ADP8870_BL_CUR_mA(I)            ((I * 127) / 30)
  87
  88 /*
  89  * L2 comparator current 0..1106uA
  90  */
  91 #define ADP8870_L2_COMP_CURR_uA(I)      ((I * 255) / 1106)
  92
  93 /*
  94  * L3 comparator current 0..551uA
  95  */
  96 #define ADP8870_L3_COMP_CURR_uA(I)      ((I * 255) / 551)
  97
  98 /*
  99  * L4 comparator current 0..275uA
 100  */
 101 #define ADP8870_L4_COMP_CURR_uA(I)      ((I * 255) / 275)
 102
 103 /*
 104  * L5 comparator current 0..138uA
 105  */
 106 #define ADP8870_L5_COMP_CURR_uA(I)      ((I * 255) / 138)
 107
 108 struct adp8870_backlight_platform_data {
 109         u8 bl_led_assign;       /* 1 = Backlight 0 = Individual LED */
 110         u8 pwm_assign;          /* 1 = Enables PWM mode */
 111
 112         u8 bl_fade_in;          /* Backlight Fade-In Timer */
 113         u8 bl_fade_out;         /* Backlight Fade-Out Timer */
 114         u8 bl_fade_law;         /* fade-on/fade-off transfer characteristic */
 115
 116         u8 en_ambl_sens;        /* 1 = enable ambient light sensor */
 117         u8 abml_filt;           /* Light sensor filter time */
 118
 119         u8 l1_daylight_max;     /* use BL_CUR_mA(I) 0 <= I <= 30 mA */
 120         u8 l1_daylight_dim;     /* typ = 0, use BL_CUR_mA(I) 0 <= I <= 30 mA */
 121         u8 l2_bright_max;       /* use BL_CUR_mA(I) 0 <= I <= 30 mA */
 122         u8 l2_bright_dim;       /* typ = 0, use BL_CUR_mA(I) 0 <= I <= 30 mA */
 123         u8 l3_office_max;       /* use BL_CUR_mA(I) 0 <= I <= 30 mA */
 124         u8 l3_office_dim;       /* typ = 0, use BL_CUR_mA(I) 0 <= I <= 30 mA */
 125         u8 l4_indoor_max;       /* use BL_CUR_mA(I) 0 <= I <= 30 mA */
 126         u8 l4_indor_dim;        /* typ = 0, use BL_CUR_mA(I) 0 <= I <= 30 mA */
 127         u8 l5_dark_max;         /* use BL_CUR_mA(I) 0 <= I <= 30 mA */
 128         u8 l5_dark_dim;         /* typ = 0, use BL_CUR_mA(I) 0 <= I <= 30 mA */
 129
 130         u8 l2_trip;             /* use L2_COMP_CURR_uA(I) 0 <= I <= 1106 uA */
 131         u8 l2_hyst;             /* use L2_COMP_CURR_uA(I) 0 <= I <= 1106 uA */
 132         u8 l3_trip;             /* use L3_COMP_CURR_uA(I) 0 <= I <= 551 uA */
 133         u8 l3_hyst;             /* use L3_COMP_CURR_uA(I) 0 <= I <= 551 uA */
 134         u8 l4_trip;             /* use L4_COMP_CURR_uA(I) 0 <= I <= 275 uA */
 135         u8 l4_hyst;             /* use L4_COMP_CURR_uA(I) 0 <= I <= 275 uA */
 136         u8 l5_trip;             /* use L5_COMP_CURR_uA(I) 0 <= I <= 138 uA */
 137         u8 l5_hyst;             /* use L6_COMP_CURR_uA(I) 0 <= I <= 138 uA */
 138
 139         /**
 140          * Independent Current Sinks / LEDS
 141          * Sinks not assigned to the Backlight can be exposed to
 142          * user space using the LEDS CLASS interface
 143          */
 144
 145         int num_leds;
 146         struct led_info *leds;
 147         u8 led_fade_in;         /* LED Fade-In Timer */
 148         u8 led_fade_out;        /* LED Fade-Out Timer */
 149         u8 led_fade_law;        /* fade-on/fade-off transfer characteristic */
 150         u8 led_on_time;
 151 };
 152
 153 #endif /* __LINUX_I2C_ADP8870_H */