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led-lm3530.h
/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2011 ST-Ericsson SA. * Copyright (C) 2009 Motorola, Inc. * * Simple driver for National Semiconductor LM35330 Backlight driver chip * * Author: Shreshtha Kumar SAHU <shreshthakumar.sahu@stericsson.com> * based on leds-lm3530.c by Dan Murphy <D.Murphy@motorola.com> */ #ifndef _LINUX_LED_LM3530_H__ #define _LINUX_LED_LM3530_H__ #define LM3530_FS_CURR_5mA (0) /* Full Scale Current */ #define LM3530_FS_CURR_8mA (1) #define LM3530_FS_CURR_12mA (2) #define LM3530_FS_CURR_15mA (3) #define LM3530_FS_CURR_19mA (4) #define LM3530_FS_CURR_22mA (5) #define LM3530_FS_CURR_26mA (6) #define LM3530_FS_CURR_29mA (7) #define LM3530_ALS_AVRG_TIME_32ms (0) /* ALS Averaging Time */ #define LM3530_ALS_AVRG_TIME_64ms (1) #define LM3530_ALS_AVRG_TIME_128ms (2) #define LM3530_ALS_AVRG_TIME_256ms (3) #define LM3530_ALS_AVRG_TIME_512ms (4) #define LM3530_ALS_AVRG_TIME_1024ms (5) #define LM3530_ALS_AVRG_TIME_2048ms (6) #define LM3530_ALS_AVRG_TIME_4096ms (7) #define LM3530_RAMP_TIME_1ms (0) /* Brigtness Ramp Time */ #define LM3530_RAMP_TIME_130ms (1) /* Max to 0 and vice versa */ #define LM3530_RAMP_TIME_260ms (2) #define LM3530_RAMP_TIME_520ms (3) #define LM3530_RAMP_TIME_1s (4) #define LM3530_RAMP_TIME_2s (5) #define LM3530_RAMP_TIME_4s (6) #define LM3530_RAMP_TIME_8s (7) /* ALS Resistor Select */ #define LM3530_ALS_IMPD_Z (0x00) /* ALS Impedance */ #define LM3530_ALS_IMPD_13_53kOhm (0x01) #define LM3530_ALS_IMPD_9_01kOhm (0x02) #define LM3530_ALS_IMPD_5_41kOhm (0x03) #define LM3530_ALS_IMPD_2_27kOhm (0x04) #define LM3530_ALS_IMPD_1_94kOhm (0x05) #define LM3530_ALS_IMPD_1_81kOhm (0x06) #define LM3530_ALS_IMPD_1_6kOhm (0x07) #define LM3530_ALS_IMPD_1_138kOhm (0x08) #define LM3530_ALS_IMPD_1_05kOhm (0x09) #define LM3530_ALS_IMPD_1_011kOhm (0x0A) #define LM3530_ALS_IMPD_941Ohm (0x0B) #define LM3530_ALS_IMPD_759Ohm (0x0C) #define LM3530_ALS_IMPD_719Ohm (0x0D) #define LM3530_ALS_IMPD_700Ohm (0x0E) #define LM3530_ALS_IMPD_667Ohm (0x0F) enum lm3530_mode { LM3530_BL_MODE_MANUAL = 0, /* "man" */ LM3530_BL_MODE_ALS, /* "als" */ LM3530_BL_MODE_PWM, /* "pwm" */ }; /* ALS input select */ enum lm3530_als_mode { LM3530_INPUT_AVRG = 0, /* ALS1 and ALS2 input average */ LM3530_INPUT_ALS1, /* ALS1 Input */ LM3530_INPUT_ALS2, /* ALS2 Input */ LM3530_INPUT_CEIL, /* Max of ALS1 and ALS2 */ }; /* PWM Platform Specific Data */ struct lm3530_pwm_data { void (*pwm_set_intensity) (int brightness, int max_brightness); int (*pwm_get_intensity) (int max_brightness); }; /** * struct lm3530_platform_data * @mode: mode of operation i.e. Manual, ALS or PWM * @als_input_mode: select source of ALS input - ALS1/2 or average * @max_current: full scale LED current * @pwm_pol_hi: PWM input polarity - active high/active low * @als_avrg_time: ALS input averaging time * @brt_ramp_law: brightness mapping mode - exponential/linear * @brt_ramp_fall: rate of fall of led current * @brt_ramp_rise: rate of rise of led current * @als1_resistor_sel: internal resistance from ALS1 input to ground * @als2_resistor_sel: internal resistance from ALS2 input to ground * @als_vmin: als input voltage calibrated for max brightness in mV * @als_vmax: als input voltage calibrated for min brightness in mV * @brt_val: brightness value (0-127) * @pwm_data: PWM control functions (only valid when the mode is PWM) */ struct lm3530_platform_data { enum lm3530_mode mode; enum lm3530_als_mode als_input_mode; u8 max_current; bool pwm_pol_hi; u8 als_avrg_time; bool brt_ramp_law; u8 brt_ramp_fall; u8 brt_ramp_rise; u8 als1_resistor_sel; u8 als2_resistor_sel; u32 als_vmin; u32 als_vmax; u8 brt_val; struct lm3530_pwm_data pwm_data; }; #endif /* _LINUX_LED_LM3530_H__ */
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