| Shreshtha Kumar Sahu | b1e6b70 | 2011-03-22 16:30:16 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 ST-Ericsson SA. |
| 3 | * Copyright (C) 2009 Motorola, Inc. |
| 4 | * |
| 5 | * License Terms: GNU General Public License v2 |
| 6 | * |
| 7 | * Simple driver for National Semiconductor LM35330 Backlight driver chip |
| 8 | * |
| 9 | * Author: Shreshtha Kumar SAHU <shreshthakumar.sahu@stericsson.com> |
| 10 | * based on leds-lm3530.c by Dan Murphy <D.Murphy@motorola.com> |
| 11 | */ |
| 12 | |
| 13 | #ifndef _LINUX_LED_LM3530_H__ |
| 14 | #define _LINUX_LED_LM3530_H__ |
| 15 | |
| 16 | #define LM3530_FS_CURR_5mA (0) /* Full Scale Current */ |
| 17 | #define LM3530_FS_CURR_8mA (1) |
| 18 | #define LM3530_FS_CURR_12mA (2) |
| 19 | #define LM3530_FS_CURR_15mA (3) |
| 20 | #define LM3530_FS_CURR_19mA (4) |
| 21 | #define LM3530_FS_CURR_22mA (5) |
| 22 | #define LM3530_FS_CURR_26mA (6) |
| 23 | #define LM3530_FS_CURR_29mA (7) |
| 24 | |
| 25 | #define LM3530_ALS_AVRG_TIME_32ms (0) /* ALS Averaging Time */ |
| 26 | #define LM3530_ALS_AVRG_TIME_64ms (1) |
| 27 | #define LM3530_ALS_AVRG_TIME_128ms (2) |
| 28 | #define LM3530_ALS_AVRG_TIME_256ms (3) |
| 29 | #define LM3530_ALS_AVRG_TIME_512ms (4) |
| 30 | #define LM3530_ALS_AVRG_TIME_1024ms (5) |
| 31 | #define LM3530_ALS_AVRG_TIME_2048ms (6) |
| 32 | #define LM3530_ALS_AVRG_TIME_4096ms (7) |
| 33 | |
| 34 | #define LM3530_RAMP_TIME_1ms (0) /* Brigtness Ramp Time */ |
| 35 | #define LM3530_RAMP_TIME_130ms (1) /* Max to 0 and vice versa */ |
| 36 | #define LM3530_RAMP_TIME_260ms (2) |
| 37 | #define LM3530_RAMP_TIME_520ms (3) |
| 38 | #define LM3530_RAMP_TIME_1s (4) |
| 39 | #define LM3530_RAMP_TIME_2s (5) |
| 40 | #define LM3530_RAMP_TIME_4s (6) |
| 41 | #define LM3530_RAMP_TIME_8s (7) |
| 42 | |
| 43 | /* ALS Resistor Select */ |
| Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 44 | #define LM3530_ALS_IMPD_Z (0x00) /* ALS Impedance */ |
| Shreshtha Kumar Sahu | b1e6b70 | 2011-03-22 16:30:16 -0700 | [diff] [blame] | 45 | #define LM3530_ALS_IMPD_13_53kOhm (0x01) |
| 46 | #define LM3530_ALS_IMPD_9_01kOhm (0x02) |
| 47 | #define LM3530_ALS_IMPD_5_41kOhm (0x03) |
| 48 | #define LM3530_ALS_IMPD_2_27kOhm (0x04) |
| 49 | #define LM3530_ALS_IMPD_1_94kOhm (0x05) |
| 50 | #define LM3530_ALS_IMPD_1_81kOhm (0x06) |
| 51 | #define LM3530_ALS_IMPD_1_6kOhm (0x07) |
| 52 | #define LM3530_ALS_IMPD_1_138kOhm (0x08) |
| 53 | #define LM3530_ALS_IMPD_1_05kOhm (0x09) |
| 54 | #define LM3530_ALS_IMPD_1_011kOhm (0x0A) |
| 55 | #define LM3530_ALS_IMPD_941Ohm (0x0B) |
| 56 | #define LM3530_ALS_IMPD_759Ohm (0x0C) |
| 57 | #define LM3530_ALS_IMPD_719Ohm (0x0D) |
| 58 | #define LM3530_ALS_IMPD_700Ohm (0x0E) |
| 59 | #define LM3530_ALS_IMPD_667Ohm (0x0F) |
| 60 | |
| 61 | enum lm3530_mode { |
| 62 | LM3530_BL_MODE_MANUAL = 0, /* "man" */ |
| 63 | LM3530_BL_MODE_ALS, /* "als" */ |
| 64 | LM3530_BL_MODE_PWM, /* "pwm" */ |
| 65 | }; |
| 66 | |
| 67 | /* ALS input select */ |
| 68 | enum lm3530_als_mode { |
| 69 | LM3530_INPUT_AVRG = 0, /* ALS1 and ALS2 input average */ |
| 70 | LM3530_INPUT_ALS1, /* ALS1 Input */ |
| 71 | LM3530_INPUT_ALS2, /* ALS2 Input */ |
| 72 | LM3530_INPUT_CEIL, /* Max of ALS1 and ALS2 */ |
| 73 | }; |
| 74 | |
| 75 | /** |
| 76 | * struct lm3530_platform_data |
| 77 | * @mode: mode of operation i.e. Manual, ALS or PWM |
| 78 | * @als_input_mode: select source of ALS input - ALS1/2 or average |
| 79 | * @max_current: full scale LED current |
| 80 | * @pwm_pol_hi: PWM input polarity - active high/active low |
| 81 | * @als_avrg_time: ALS input averaging time |
| 82 | * @brt_ramp_law: brightness mapping mode - exponential/linear |
| 83 | * @brt_ramp_fall: rate of fall of led current |
| 84 | * @brt_ramp_rise: rate of rise of led current |
| 85 | * @als1_resistor_sel: internal resistance from ALS1 input to ground |
| 86 | * @als2_resistor_sel: internal resistance from ALS2 input to ground |
| 87 | * @brt_val: brightness value (0-255) |
| 88 | */ |
| 89 | struct lm3530_platform_data { |
| 90 | enum lm3530_mode mode; |
| 91 | enum lm3530_als_mode als_input_mode; |
| 92 | |
| 93 | u8 max_current; |
| 94 | bool pwm_pol_hi; |
| 95 | u8 als_avrg_time; |
| 96 | |
| 97 | bool brt_ramp_law; |
| 98 | u8 brt_ramp_fall; |
| 99 | u8 brt_ramp_rise; |
| 100 | |
| 101 | u8 als1_resistor_sel; |
| 102 | u8 als2_resistor_sel; |
| 103 | |
| 104 | u8 brt_val; |
| 105 | }; |
| 106 | |
| 107 | #endif /* _LINUX_LED_LM3530_H__ */ |