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757 lines
18 KiB
757 lines
18 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* leds-lm3533.c -- LM3533 LED driver |
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* |
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* Copyright (C) 2011-2012 Texas Instruments |
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* |
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* Author: Johan Hovold <[email protected]> |
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*/ |
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#include <linux/module.h> |
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#include <linux/leds.h> |
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#include <linux/mfd/core.h> |
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#include <linux/mutex.h> |
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#include <linux/platform_device.h> |
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#include <linux/slab.h> |
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#include <linux/mfd/lm3533.h> |
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#define LM3533_LVCTRLBANK_MIN 2 |
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#define LM3533_LVCTRLBANK_MAX 5 |
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#define LM3533_LVCTRLBANK_COUNT 4 |
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#define LM3533_RISEFALLTIME_MAX 7 |
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#define LM3533_ALS_CHANNEL_LV_MIN 1 |
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#define LM3533_ALS_CHANNEL_LV_MAX 2 |
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#define LM3533_REG_CTRLBANK_BCONF_BASE 0x1b |
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#define LM3533_REG_PATTERN_ENABLE 0x28 |
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#define LM3533_REG_PATTERN_LOW_TIME_BASE 0x71 |
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#define LM3533_REG_PATTERN_HIGH_TIME_BASE 0x72 |
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#define LM3533_REG_PATTERN_RISETIME_BASE 0x74 |
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#define LM3533_REG_PATTERN_FALLTIME_BASE 0x75 |
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#define LM3533_REG_PATTERN_STEP 0x10 |
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#define LM3533_REG_CTRLBANK_BCONF_MAPPING_MASK 0x04 |
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#define LM3533_REG_CTRLBANK_BCONF_ALS_EN_MASK 0x02 |
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#define LM3533_REG_CTRLBANK_BCONF_ALS_CHANNEL_MASK 0x01 |
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#define LM3533_LED_FLAG_PATTERN_ENABLE 1 |
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struct lm3533_led { |
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struct lm3533 *lm3533; |
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struct lm3533_ctrlbank cb; |
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struct led_classdev cdev; |
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int id; |
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struct mutex mutex; |
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unsigned long flags; |
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}; |
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static inline struct lm3533_led *to_lm3533_led(struct led_classdev *cdev) |
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{ |
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return container_of(cdev, struct lm3533_led, cdev); |
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} |
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static inline int lm3533_led_get_ctrlbank_id(struct lm3533_led *led) |
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{ |
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return led->id + 2; |
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} |
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static inline u8 lm3533_led_get_lv_reg(struct lm3533_led *led, u8 base) |
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{ |
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return base + led->id; |
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} |
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static inline u8 lm3533_led_get_pattern(struct lm3533_led *led) |
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{ |
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return led->id; |
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} |
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static inline u8 lm3533_led_get_pattern_reg(struct lm3533_led *led, |
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u8 base) |
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{ |
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return base + lm3533_led_get_pattern(led) * LM3533_REG_PATTERN_STEP; |
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} |
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static int lm3533_led_pattern_enable(struct lm3533_led *led, int enable) |
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{ |
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u8 mask; |
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u8 val; |
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int pattern; |
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int state; |
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int ret = 0; |
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dev_dbg(led->cdev.dev, "%s - %d\n", __func__, enable); |
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mutex_lock(&led->mutex); |
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state = test_bit(LM3533_LED_FLAG_PATTERN_ENABLE, &led->flags); |
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if ((enable && state) || (!enable && !state)) |
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goto out; |
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pattern = lm3533_led_get_pattern(led); |
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mask = 1 << (2 * pattern); |
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if (enable) |
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val = mask; |
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else |
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val = 0; |
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ret = lm3533_update(led->lm3533, LM3533_REG_PATTERN_ENABLE, val, mask); |
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if (ret) { |
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dev_err(led->cdev.dev, "failed to enable pattern %d (%d)\n", |
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pattern, enable); |
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goto out; |
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} |
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__change_bit(LM3533_LED_FLAG_PATTERN_ENABLE, &led->flags); |
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out: |
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mutex_unlock(&led->mutex); |
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return ret; |
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} |
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static int lm3533_led_set(struct led_classdev *cdev, |
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enum led_brightness value) |
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{ |
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struct lm3533_led *led = to_lm3533_led(cdev); |
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dev_dbg(led->cdev.dev, "%s - %d\n", __func__, value); |
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if (value == 0) |
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lm3533_led_pattern_enable(led, 0); /* disable blink */ |
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return lm3533_ctrlbank_set_brightness(&led->cb, value); |
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} |
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static enum led_brightness lm3533_led_get(struct led_classdev *cdev) |
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{ |
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struct lm3533_led *led = to_lm3533_led(cdev); |
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u8 val; |
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int ret; |
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ret = lm3533_ctrlbank_get_brightness(&led->cb, &val); |
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if (ret) |
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return ret; |
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dev_dbg(led->cdev.dev, "%s - %u\n", __func__, val); |
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return val; |
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} |
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/* Pattern generator defines (delays in us). */ |
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#define LM3533_LED_DELAY1_VMIN 0x00 |
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#define LM3533_LED_DELAY2_VMIN 0x3d |
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#define LM3533_LED_DELAY3_VMIN 0x80 |
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#define LM3533_LED_DELAY1_VMAX (LM3533_LED_DELAY2_VMIN - 1) |
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#define LM3533_LED_DELAY2_VMAX (LM3533_LED_DELAY3_VMIN - 1) |
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#define LM3533_LED_DELAY3_VMAX 0xff |
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#define LM3533_LED_DELAY1_TMIN 16384U |
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#define LM3533_LED_DELAY2_TMIN 1130496U |
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#define LM3533_LED_DELAY3_TMIN 10305536U |
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#define LM3533_LED_DELAY1_TMAX 999424U |
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#define LM3533_LED_DELAY2_TMAX 9781248U |
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#define LM3533_LED_DELAY3_TMAX 76890112U |
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/* t_step = (t_max - t_min) / (v_max - v_min) */ |
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#define LM3533_LED_DELAY1_TSTEP 16384 |
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#define LM3533_LED_DELAY2_TSTEP 131072 |
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#define LM3533_LED_DELAY3_TSTEP 524288 |
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/* Delay limits for hardware accelerated blinking (in ms). */ |
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#define LM3533_LED_DELAY_ON_MAX \ |
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((LM3533_LED_DELAY2_TMAX + LM3533_LED_DELAY2_TSTEP / 2) / 1000) |
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#define LM3533_LED_DELAY_OFF_MAX \ |
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((LM3533_LED_DELAY3_TMAX + LM3533_LED_DELAY3_TSTEP / 2) / 1000) |
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/* |
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* Returns linear map of *t from [t_min,t_max] to [v_min,v_max] with a step |
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* size of t_step, where |
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* |
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* t_step = (t_max - t_min) / (v_max - v_min) |
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* |
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* and updates *t to reflect the mapped value. |
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*/ |
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static u8 time_to_val(unsigned *t, unsigned t_min, unsigned t_step, |
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u8 v_min, u8 v_max) |
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{ |
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unsigned val; |
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val = (*t + t_step / 2 - t_min) / t_step + v_min; |
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*t = t_step * (val - v_min) + t_min; |
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return (u8)val; |
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} |
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/* |
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* Returns time code corresponding to *delay (in ms) and updates *delay to |
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* reflect actual hardware delay. |
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* |
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* Hardware supports 256 discrete delay times, divided into three groups with |
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* the following ranges and step-sizes: |
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* |
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* [ 16, 999] [0x00, 0x3e] step 16 ms |
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* [ 1130, 9781] [0x3d, 0x7f] step 131 ms |
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* [10306, 76890] [0x80, 0xff] step 524 ms |
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* |
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* Note that delay group 3 is only available for delay_off. |
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*/ |
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static u8 lm3533_led_get_hw_delay(unsigned *delay) |
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{ |
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unsigned t; |
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u8 val; |
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t = *delay * 1000; |
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if (t >= (LM3533_LED_DELAY2_TMAX + LM3533_LED_DELAY3_TMIN) / 2) { |
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t = clamp(t, LM3533_LED_DELAY3_TMIN, LM3533_LED_DELAY3_TMAX); |
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val = time_to_val(&t, LM3533_LED_DELAY3_TMIN, |
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LM3533_LED_DELAY3_TSTEP, |
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LM3533_LED_DELAY3_VMIN, |
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LM3533_LED_DELAY3_VMAX); |
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} else if (t >= (LM3533_LED_DELAY1_TMAX + LM3533_LED_DELAY2_TMIN) / 2) { |
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t = clamp(t, LM3533_LED_DELAY2_TMIN, LM3533_LED_DELAY2_TMAX); |
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val = time_to_val(&t, LM3533_LED_DELAY2_TMIN, |
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LM3533_LED_DELAY2_TSTEP, |
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LM3533_LED_DELAY2_VMIN, |
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LM3533_LED_DELAY2_VMAX); |
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} else { |
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t = clamp(t, LM3533_LED_DELAY1_TMIN, LM3533_LED_DELAY1_TMAX); |
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val = time_to_val(&t, LM3533_LED_DELAY1_TMIN, |
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LM3533_LED_DELAY1_TSTEP, |
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LM3533_LED_DELAY1_VMIN, |
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LM3533_LED_DELAY1_VMAX); |
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} |
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*delay = (t + 500) / 1000; |
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return val; |
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} |
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/* |
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* Set delay register base to *delay (in ms) and update *delay to reflect |
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* actual hardware delay used. |
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*/ |
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static u8 lm3533_led_delay_set(struct lm3533_led *led, u8 base, |
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unsigned long *delay) |
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{ |
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unsigned t; |
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u8 val; |
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u8 reg; |
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int ret; |
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t = (unsigned)*delay; |
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/* Delay group 3 is only available for low time (delay off). */ |
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if (base != LM3533_REG_PATTERN_LOW_TIME_BASE) |
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t = min(t, LM3533_LED_DELAY2_TMAX / 1000); |
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val = lm3533_led_get_hw_delay(&t); |
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dev_dbg(led->cdev.dev, "%s - %lu: %u (0x%02x)\n", __func__, |
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*delay, t, val); |
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reg = lm3533_led_get_pattern_reg(led, base); |
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ret = lm3533_write(led->lm3533, reg, val); |
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if (ret) |
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dev_err(led->cdev.dev, "failed to set delay (%02x)\n", reg); |
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*delay = t; |
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return ret; |
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} |
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static int lm3533_led_delay_on_set(struct lm3533_led *led, unsigned long *t) |
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{ |
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return lm3533_led_delay_set(led, LM3533_REG_PATTERN_HIGH_TIME_BASE, t); |
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} |
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static int lm3533_led_delay_off_set(struct lm3533_led *led, unsigned long *t) |
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{ |
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return lm3533_led_delay_set(led, LM3533_REG_PATTERN_LOW_TIME_BASE, t); |
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} |
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static int lm3533_led_blink_set(struct led_classdev *cdev, |
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unsigned long *delay_on, |
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unsigned long *delay_off) |
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{ |
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struct lm3533_led *led = to_lm3533_led(cdev); |
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int ret; |
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dev_dbg(led->cdev.dev, "%s - on = %lu, off = %lu\n", __func__, |
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*delay_on, *delay_off); |
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if (*delay_on > LM3533_LED_DELAY_ON_MAX || |
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*delay_off > LM3533_LED_DELAY_OFF_MAX) |
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return -EINVAL; |
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if (*delay_on == 0 && *delay_off == 0) { |
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*delay_on = 500; |
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*delay_off = 500; |
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} |
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ret = lm3533_led_delay_on_set(led, delay_on); |
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if (ret) |
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return ret; |
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ret = lm3533_led_delay_off_set(led, delay_off); |
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if (ret) |
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return ret; |
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return lm3533_led_pattern_enable(led, 1); |
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} |
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static ssize_t show_id(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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struct led_classdev *led_cdev = dev_get_drvdata(dev); |
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struct lm3533_led *led = to_lm3533_led(led_cdev); |
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return scnprintf(buf, PAGE_SIZE, "%d\n", led->id); |
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} |
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/* |
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* Pattern generator rise/fall times: |
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* |
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* 0 - 2048 us (default) |
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* 1 - 262 ms |
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* 2 - 524 ms |
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* 3 - 1.049 s |
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* 4 - 2.097 s |
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* 5 - 4.194 s |
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* 6 - 8.389 s |
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* 7 - 16.78 s |
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*/ |
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static ssize_t show_risefalltime(struct device *dev, |
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struct device_attribute *attr, |
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char *buf, u8 base) |
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{ |
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struct led_classdev *led_cdev = dev_get_drvdata(dev); |
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struct lm3533_led *led = to_lm3533_led(led_cdev); |
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ssize_t ret; |
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u8 reg; |
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u8 val; |
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reg = lm3533_led_get_pattern_reg(led, base); |
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ret = lm3533_read(led->lm3533, reg, &val); |
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if (ret) |
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return ret; |
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return scnprintf(buf, PAGE_SIZE, "%x\n", val); |
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} |
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static ssize_t show_risetime(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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return show_risefalltime(dev, attr, buf, |
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LM3533_REG_PATTERN_RISETIME_BASE); |
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} |
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static ssize_t show_falltime(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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return show_risefalltime(dev, attr, buf, |
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LM3533_REG_PATTERN_FALLTIME_BASE); |
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} |
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static ssize_t store_risefalltime(struct device *dev, |
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struct device_attribute *attr, |
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const char *buf, size_t len, u8 base) |
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{ |
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struct led_classdev *led_cdev = dev_get_drvdata(dev); |
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struct lm3533_led *led = to_lm3533_led(led_cdev); |
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u8 val; |
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u8 reg; |
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int ret; |
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if (kstrtou8(buf, 0, &val) || val > LM3533_RISEFALLTIME_MAX) |
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return -EINVAL; |
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reg = lm3533_led_get_pattern_reg(led, base); |
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ret = lm3533_write(led->lm3533, reg, val); |
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if (ret) |
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return ret; |
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return len; |
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} |
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static ssize_t store_risetime(struct device *dev, |
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struct device_attribute *attr, |
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const char *buf, size_t len) |
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{ |
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return store_risefalltime(dev, attr, buf, len, |
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LM3533_REG_PATTERN_RISETIME_BASE); |
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} |
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static ssize_t store_falltime(struct device *dev, |
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struct device_attribute *attr, |
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const char *buf, size_t len) |
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{ |
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return store_risefalltime(dev, attr, buf, len, |
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LM3533_REG_PATTERN_FALLTIME_BASE); |
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} |
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static ssize_t show_als_channel(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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struct led_classdev *led_cdev = dev_get_drvdata(dev); |
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struct lm3533_led *led = to_lm3533_led(led_cdev); |
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unsigned channel; |
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u8 reg; |
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u8 val; |
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int ret; |
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reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE); |
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ret = lm3533_read(led->lm3533, reg, &val); |
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if (ret) |
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return ret; |
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channel = (val & LM3533_REG_CTRLBANK_BCONF_ALS_CHANNEL_MASK) + 1; |
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return scnprintf(buf, PAGE_SIZE, "%u\n", channel); |
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} |
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static ssize_t store_als_channel(struct device *dev, |
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struct device_attribute *attr, |
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const char *buf, size_t len) |
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{ |
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struct led_classdev *led_cdev = dev_get_drvdata(dev); |
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struct lm3533_led *led = to_lm3533_led(led_cdev); |
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unsigned channel; |
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u8 reg; |
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u8 val; |
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u8 mask; |
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int ret; |
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if (kstrtouint(buf, 0, &channel)) |
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return -EINVAL; |
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if (channel < LM3533_ALS_CHANNEL_LV_MIN || |
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channel > LM3533_ALS_CHANNEL_LV_MAX) |
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return -EINVAL; |
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reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE); |
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mask = LM3533_REG_CTRLBANK_BCONF_ALS_CHANNEL_MASK; |
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val = channel - 1; |
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ret = lm3533_update(led->lm3533, reg, val, mask); |
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if (ret) |
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return ret; |
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return len; |
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} |
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static ssize_t show_als_en(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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struct led_classdev *led_cdev = dev_get_drvdata(dev); |
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struct lm3533_led *led = to_lm3533_led(led_cdev); |
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bool enable; |
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u8 reg; |
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u8 val; |
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int ret; |
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reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE); |
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ret = lm3533_read(led->lm3533, reg, &val); |
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if (ret) |
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return ret; |
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enable = val & LM3533_REG_CTRLBANK_BCONF_ALS_EN_MASK; |
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return scnprintf(buf, PAGE_SIZE, "%d\n", enable); |
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} |
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static ssize_t store_als_en(struct device *dev, |
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struct device_attribute *attr, |
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const char *buf, size_t len) |
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{ |
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struct led_classdev *led_cdev = dev_get_drvdata(dev); |
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struct lm3533_led *led = to_lm3533_led(led_cdev); |
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unsigned enable; |
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u8 reg; |
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u8 mask; |
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u8 val; |
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int ret; |
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if (kstrtouint(buf, 0, &enable)) |
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return -EINVAL; |
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reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE); |
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mask = LM3533_REG_CTRLBANK_BCONF_ALS_EN_MASK; |
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if (enable) |
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val = mask; |
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else |
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val = 0; |
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ret = lm3533_update(led->lm3533, reg, val, mask); |
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if (ret) |
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return ret; |
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return len; |
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} |
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static ssize_t show_linear(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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struct led_classdev *led_cdev = dev_get_drvdata(dev); |
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struct lm3533_led *led = to_lm3533_led(led_cdev); |
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u8 reg; |
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u8 val; |
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int linear; |
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int ret; |
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reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE); |
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ret = lm3533_read(led->lm3533, reg, &val); |
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if (ret) |
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return ret; |
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if (val & LM3533_REG_CTRLBANK_BCONF_MAPPING_MASK) |
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linear = 1; |
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else |
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linear = 0; |
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return scnprintf(buf, PAGE_SIZE, "%x\n", linear); |
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} |
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static ssize_t store_linear(struct device *dev, |
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struct device_attribute *attr, |
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const char *buf, size_t len) |
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{ |
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struct led_classdev *led_cdev = dev_get_drvdata(dev); |
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struct lm3533_led *led = to_lm3533_led(led_cdev); |
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unsigned long linear; |
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u8 reg; |
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u8 mask; |
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u8 val; |
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int ret; |
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|
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if (kstrtoul(buf, 0, &linear)) |
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return -EINVAL; |
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reg = lm3533_led_get_lv_reg(led, LM3533_REG_CTRLBANK_BCONF_BASE); |
|
mask = LM3533_REG_CTRLBANK_BCONF_MAPPING_MASK; |
|
|
|
if (linear) |
|
val = mask; |
|
else |
|
val = 0; |
|
|
|
ret = lm3533_update(led->lm3533, reg, val, mask); |
|
if (ret) |
|
return ret; |
|
|
|
return len; |
|
} |
|
|
|
static ssize_t show_pwm(struct device *dev, |
|
struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct led_classdev *led_cdev = dev_get_drvdata(dev); |
|
struct lm3533_led *led = to_lm3533_led(led_cdev); |
|
u8 val; |
|
int ret; |
|
|
|
ret = lm3533_ctrlbank_get_pwm(&led->cb, &val); |
|
if (ret) |
|
return ret; |
|
|
|
return scnprintf(buf, PAGE_SIZE, "%u\n", val); |
|
} |
|
|
|
static ssize_t store_pwm(struct device *dev, |
|
struct device_attribute *attr, |
|
const char *buf, size_t len) |
|
{ |
|
struct led_classdev *led_cdev = dev_get_drvdata(dev); |
|
struct lm3533_led *led = to_lm3533_led(led_cdev); |
|
u8 val; |
|
int ret; |
|
|
|
if (kstrtou8(buf, 0, &val)) |
|
return -EINVAL; |
|
|
|
ret = lm3533_ctrlbank_set_pwm(&led->cb, val); |
|
if (ret) |
|
return ret; |
|
|
|
return len; |
|
} |
|
|
|
static LM3533_ATTR_RW(als_channel); |
|
static LM3533_ATTR_RW(als_en); |
|
static LM3533_ATTR_RW(falltime); |
|
static LM3533_ATTR_RO(id); |
|
static LM3533_ATTR_RW(linear); |
|
static LM3533_ATTR_RW(pwm); |
|
static LM3533_ATTR_RW(risetime); |
|
|
|
static struct attribute *lm3533_led_attributes[] = { |
|
&dev_attr_als_channel.attr, |
|
&dev_attr_als_en.attr, |
|
&dev_attr_falltime.attr, |
|
&dev_attr_id.attr, |
|
&dev_attr_linear.attr, |
|
&dev_attr_pwm.attr, |
|
&dev_attr_risetime.attr, |
|
NULL, |
|
}; |
|
|
|
static umode_t lm3533_led_attr_is_visible(struct kobject *kobj, |
|
struct attribute *attr, int n) |
|
{ |
|
struct device *dev = kobj_to_dev(kobj); |
|
struct led_classdev *led_cdev = dev_get_drvdata(dev); |
|
struct lm3533_led *led = to_lm3533_led(led_cdev); |
|
umode_t mode = attr->mode; |
|
|
|
if (attr == &dev_attr_als_channel.attr || |
|
attr == &dev_attr_als_en.attr) { |
|
if (!led->lm3533->have_als) |
|
mode = 0; |
|
} |
|
|
|
return mode; |
|
}; |
|
|
|
static const struct attribute_group lm3533_led_attribute_group = { |
|
.is_visible = lm3533_led_attr_is_visible, |
|
.attrs = lm3533_led_attributes |
|
}; |
|
|
|
static const struct attribute_group *lm3533_led_attribute_groups[] = { |
|
&lm3533_led_attribute_group, |
|
NULL |
|
}; |
|
|
|
static int lm3533_led_setup(struct lm3533_led *led, |
|
struct lm3533_led_platform_data *pdata) |
|
{ |
|
int ret; |
|
|
|
ret = lm3533_ctrlbank_set_max_current(&led->cb, pdata->max_current); |
|
if (ret) |
|
return ret; |
|
|
|
return lm3533_ctrlbank_set_pwm(&led->cb, pdata->pwm); |
|
} |
|
|
|
static int lm3533_led_probe(struct platform_device *pdev) |
|
{ |
|
struct lm3533 *lm3533; |
|
struct lm3533_led_platform_data *pdata; |
|
struct lm3533_led *led; |
|
int ret; |
|
|
|
dev_dbg(&pdev->dev, "%s\n", __func__); |
|
|
|
lm3533 = dev_get_drvdata(pdev->dev.parent); |
|
if (!lm3533) |
|
return -EINVAL; |
|
|
|
pdata = dev_get_platdata(&pdev->dev); |
|
if (!pdata) { |
|
dev_err(&pdev->dev, "no platform data\n"); |
|
return -EINVAL; |
|
} |
|
|
|
if (pdev->id < 0 || pdev->id >= LM3533_LVCTRLBANK_COUNT) { |
|
dev_err(&pdev->dev, "illegal LED id %d\n", pdev->id); |
|
return -EINVAL; |
|
} |
|
|
|
led = devm_kzalloc(&pdev->dev, sizeof(*led), GFP_KERNEL); |
|
if (!led) |
|
return -ENOMEM; |
|
|
|
led->lm3533 = lm3533; |
|
led->cdev.name = pdata->name; |
|
led->cdev.default_trigger = pdata->default_trigger; |
|
led->cdev.brightness_set_blocking = lm3533_led_set; |
|
led->cdev.brightness_get = lm3533_led_get; |
|
led->cdev.blink_set = lm3533_led_blink_set; |
|
led->cdev.brightness = LED_OFF; |
|
led->cdev.groups = lm3533_led_attribute_groups; |
|
led->id = pdev->id; |
|
|
|
mutex_init(&led->mutex); |
|
|
|
/* The class framework makes a callback to get brightness during |
|
* registration so use parent device (for error reporting) until |
|
* registered. |
|
*/ |
|
led->cb.lm3533 = lm3533; |
|
led->cb.id = lm3533_led_get_ctrlbank_id(led); |
|
led->cb.dev = lm3533->dev; |
|
|
|
platform_set_drvdata(pdev, led); |
|
|
|
ret = led_classdev_register(pdev->dev.parent, &led->cdev); |
|
if (ret) { |
|
dev_err(&pdev->dev, "failed to register LED %d\n", pdev->id); |
|
return ret; |
|
} |
|
|
|
led->cb.dev = led->cdev.dev; |
|
|
|
ret = lm3533_led_setup(led, pdata); |
|
if (ret) |
|
goto err_deregister; |
|
|
|
ret = lm3533_ctrlbank_enable(&led->cb); |
|
if (ret) |
|
goto err_deregister; |
|
|
|
return 0; |
|
|
|
err_deregister: |
|
led_classdev_unregister(&led->cdev); |
|
|
|
return ret; |
|
} |
|
|
|
static int lm3533_led_remove(struct platform_device *pdev) |
|
{ |
|
struct lm3533_led *led = platform_get_drvdata(pdev); |
|
|
|
dev_dbg(&pdev->dev, "%s\n", __func__); |
|
|
|
lm3533_ctrlbank_disable(&led->cb); |
|
led_classdev_unregister(&led->cdev); |
|
|
|
return 0; |
|
} |
|
|
|
static void lm3533_led_shutdown(struct platform_device *pdev) |
|
{ |
|
|
|
struct lm3533_led *led = platform_get_drvdata(pdev); |
|
|
|
dev_dbg(&pdev->dev, "%s\n", __func__); |
|
|
|
lm3533_ctrlbank_disable(&led->cb); |
|
lm3533_led_set(&led->cdev, LED_OFF); /* disable blink */ |
|
} |
|
|
|
static struct platform_driver lm3533_led_driver = { |
|
.driver = { |
|
.name = "lm3533-leds", |
|
}, |
|
.probe = lm3533_led_probe, |
|
.remove = lm3533_led_remove, |
|
.shutdown = lm3533_led_shutdown, |
|
}; |
|
module_platform_driver(lm3533_led_driver); |
|
|
|
MODULE_AUTHOR("Johan Hovold <[email protected]>"); |
|
MODULE_DESCRIPTION("LM3533 LED driver"); |
|
MODULE_LICENSE("GPL"); |
|
MODULE_ALIAS("platform:lm3533-leds");
|
|
|