4  * Chip is combined proximity and ambient light sensor.
132 	u32	lux_cf; /* Chip specific factor */
163  * Supported stand alone rates in ms from chip data sheet
170  * Supported stand alone rates in ms from chip data sheet
176  * interrupt control functions are called while keeping chip->mutex
179 static inline int bh1770_lux_interrupt_control(struct bh1770_chip *chip,  in bh1770_lux_interrupt_control()  argument
182 	chip->int_mode_lux = lux;  in bh1770_lux_interrupt_control()
184 	return i2c_smbus_write_byte_data(chip->client,  in bh1770_lux_interrupt_control()
186 					(lux << 1) | chip->int_mode_prox);  in bh1770_lux_interrupt_control()
189 static inline int bh1770_prox_interrupt_control(struct bh1770_chip *chip,  in bh1770_prox_interrupt_control()  argument
192 	chip->int_mode_prox = ps;  in bh1770_prox_interrupt_control()
193 	return i2c_smbus_write_byte_data(chip->client,  in bh1770_prox_interrupt_control()
195 					(chip->int_mode_lux << 1) | (ps << 0));  in bh1770_prox_interrupt_control()
198 /* chip->mutex is always kept here */
199 static int bh1770_lux_rate(struct bh1770_chip *chip, int rate_index)  in bh1770_lux_rate()  argument
201 	/* sysfs may call this when the chip is powered off */  in bh1770_lux_rate()
202 	if (pm_runtime_suspended(&chip->client->dev))  in bh1770_lux_rate()
206 	if (chip->prox_enable_count)  in bh1770_lux_rate()
209 	return i2c_smbus_write_byte_data(chip->client,  in bh1770_lux_rate()
214 static int bh1770_prox_rate(struct bh1770_chip *chip, int mode)  in bh1770_prox_rate()  argument
219 		chip->prox_rate_threshold : chip->prox_rate;  in bh1770_prox_rate()
221 	return i2c_smbus_write_byte_data(chip->client,  in bh1770_prox_rate()
226 /* InfraredLED is controlled by the chip during proximity scanning */
227 static inline int bh1770_led_cfg(struct bh1770_chip *chip)  in bh1770_led_cfg()  argument
230 	return i2c_smbus_write_byte_data(chip->client,  in bh1770_led_cfg()
234 					chip->prox_led);  in bh1770_led_cfg()
243 static inline u8 bh1770_psraw_to_adjusted(struct bh1770_chip *chip, u8 psraw)  in bh1770_psraw_to_adjusted()  argument
246 	adjusted = (u16)(((u32)(psraw + chip->prox_const) * chip->prox_coef) /  in bh1770_psraw_to_adjusted()
253 static inline u8 bh1770_psadjusted_to_raw(struct bh1770_chip *chip, u8 ps)  in bh1770_psadjusted_to_raw()  argument
257 	raw = (((u32)ps * BH1770_COEF_SCALER) / chip->prox_coef);  in bh1770_psadjusted_to_raw()
258 	if (raw > chip->prox_const)  in bh1770_psadjusted_to_raw()
259 		raw = raw - chip->prox_const;  in bh1770_psadjusted_to_raw()
269  * versions. Chip->mutex is kept when this is called.
271 static int bh1770_prox_set_threshold(struct bh1770_chip *chip)  in bh1770_prox_set_threshold()  argument
275 	/* sysfs may call this when the chip is powered off */  in bh1770_prox_set_threshold()
276 	if (pm_runtime_suspended(&chip->client->dev))  in bh1770_prox_set_threshold()
279 	tmp = bh1770_psadjusted_to_raw(chip, chip->prox_threshold);  in bh1770_prox_set_threshold()
280 	chip->prox_threshold_hw = tmp;  in bh1770_prox_set_threshold()
282 	return	i2c_smbus_write_byte_data(chip->client, BH1770_PS_TH_LED1,  in bh1770_prox_set_threshold()
286 static inline u16 bh1770_lux_raw_to_adjusted(struct bh1770_chip *chip, u16 raw)  in bh1770_lux_raw_to_adjusted()  argument
289 	lux = ((u32)raw * chip->lux_corr) / BH1770_LUX_CORR_SCALE;  in bh1770_lux_raw_to_adjusted()
293 static inline u16 bh1770_lux_adjusted_to_raw(struct bh1770_chip *chip,  in bh1770_lux_adjusted_to_raw()  argument
296 	return (u32)adjusted * BH1770_LUX_CORR_SCALE / chip->lux_corr;  in bh1770_lux_adjusted_to_raw()
299 /* chip->mutex is kept when this is called */
300 static int bh1770_lux_update_thresholds(struct bh1770_chip *chip,  in bh1770_lux_update_thresholds()  argument
306 	/* sysfs may call this when the chip is powered off */  in bh1770_lux_update_thresholds()
307 	if (pm_runtime_suspended(&chip->client->dev))  in bh1770_lux_update_thresholds()
316 		threshold_hi = bh1770_lux_adjusted_to_raw(chip, threshold_hi);  in bh1770_lux_update_thresholds()
319 		threshold_lo = bh1770_lux_adjusted_to_raw(chip, threshold_lo);  in bh1770_lux_update_thresholds()
321 	if (chip->lux_thres_hi_onchip == threshold_hi &&  in bh1770_lux_update_thresholds()
322 	    chip->lux_thres_lo_onchip == threshold_lo)  in bh1770_lux_update_thresholds()
325 	chip->lux_thres_hi_onchip = threshold_hi;  in bh1770_lux_update_thresholds()
326 	chip->lux_thres_lo_onchip = threshold_lo;  in bh1770_lux_update_thresholds()
333 	ret = i2c_smbus_write_i2c_block_data(chip->client,  in bh1770_lux_update_thresholds()
340 static int bh1770_lux_get_result(struct bh1770_chip *chip)  in bh1770_lux_get_result()  argument
345 	ret = i2c_smbus_read_byte_data(chip->client, BH1770_ALS_DATA_0);  in bh1770_lux_get_result()
350 	ret = i2c_smbus_read_byte_data(chip->client, BH1770_ALS_DATA_1);  in bh1770_lux_get_result()
354 	chip->lux_data_raw = data | ((ret & 0xff) << 8);  in bh1770_lux_get_result()
359 /* Calculate correction value which contains chip and device specific parts */
360 static u32 bh1770_get_corr_value(struct bh1770_chip *chip)  in bh1770_get_corr_value()  argument
364 	tmp = (BH1770_LUX_CORR_SCALE * chip->lux_ga) / BH1770_LUX_GA_SCALE;  in bh1770_get_corr_value()
365 	/* Impact of chip factor correction */  in bh1770_get_corr_value()
366 	tmp = (tmp * chip->lux_cf) / BH1770_LUX_CF_SCALE;  in bh1770_get_corr_value()
368 	tmp = (tmp * chip->lux_calib) / BH1770_CALIB_SCALER;  in bh1770_get_corr_value()
372 static int bh1770_lux_read_result(struct bh1770_chip *chip)  in bh1770_lux_read_result()  argument
374 	bh1770_lux_get_result(chip);  in bh1770_lux_read_result()
375 	return bh1770_lux_raw_to_adjusted(chip, chip->lux_data_raw);  in bh1770_lux_read_result()
379  * Chip on / off functions are called while keeping mutex except probe
382 static int bh1770_chip_on(struct bh1770_chip *chip)  in bh1770_chip_on()  argument
384 	int ret = regulator_bulk_enable(ARRAY_SIZE(chip->regs),  in bh1770_chip_on()
385 					chip->regs);  in bh1770_chip_on()
391 	/* Reset the chip */  in bh1770_chip_on()
392 	i2c_smbus_write_byte_data(chip->client, BH1770_ALS_CONTROL,  in bh1770_chip_on()
401 	chip->lux_data_raw = 0;  in bh1770_chip_on()
402 	chip->prox_data = 0;  in bh1770_chip_on()
403 	ret = i2c_smbus_write_byte_data(chip->client,  in bh1770_chip_on()
407 	chip->lux_thres_hi_onchip = BH1770_LUX_RANGE;  in bh1770_chip_on()
408 	chip->lux_thres_lo_onchip = 0;  in bh1770_chip_on()
413 static void bh1770_chip_off(struct bh1770_chip *chip)  in bh1770_chip_off()  argument
415 	i2c_smbus_write_byte_data(chip->client,  in bh1770_chip_off()
417 	i2c_smbus_write_byte_data(chip->client,  in bh1770_chip_off()
419 	i2c_smbus_write_byte_data(chip->client,  in bh1770_chip_off()
421 	regulator_bulk_disable(ARRAY_SIZE(chip->regs), chip->regs);  in bh1770_chip_off()
424 /* chip->mutex is kept when this is called */
425 static int bh1770_prox_mode_control(struct bh1770_chip *chip)  in bh1770_prox_mode_control()  argument
427 	if (chip->prox_enable_count) {  in bh1770_prox_mode_control()
428 		chip->prox_force_update = true; /* Force immediate update */  in bh1770_prox_mode_control()
430 		bh1770_lux_rate(chip, chip->lux_rate_index);  in bh1770_prox_mode_control()
431 		bh1770_prox_set_threshold(chip);  in bh1770_prox_mode_control()
432 		bh1770_led_cfg(chip);  in bh1770_prox_mode_control()
433 		bh1770_prox_rate(chip, PROX_BELOW_THRESHOLD);  in bh1770_prox_mode_control()
434 		bh1770_prox_interrupt_control(chip, BH1770_ENABLE);  in bh1770_prox_mode_control()
435 		i2c_smbus_write_byte_data(chip->client,  in bh1770_prox_mode_control()
438 		chip->prox_data = 0;  in bh1770_prox_mode_control()
439 		bh1770_lux_rate(chip, chip->lux_rate_index);  in bh1770_prox_mode_control()
440 		bh1770_prox_interrupt_control(chip, BH1770_DISABLE);  in bh1770_prox_mode_control()
441 		i2c_smbus_write_byte_data(chip->client,  in bh1770_prox_mode_control()
447 /* chip->mutex is kept when this is called */
448 static int bh1770_prox_read_result(struct bh1770_chip *chip)  in bh1770_prox_read_result()  argument
454 	ret = i2c_smbus_read_byte_data(chip->client, BH1770_PS_DATA_LED1);  in bh1770_prox_read_result()
458 	if (ret > chip->prox_threshold_hw)  in bh1770_prox_read_result()
468 	if (chip->lux_data_raw > PROX_IGNORE_LUX_LIMIT)  in bh1770_prox_read_result()
471 	chip->prox_data = bh1770_psraw_to_adjusted(chip, ret);  in bh1770_prox_read_result()
474 	if (chip->prox_data >= chip->prox_abs_thres ||  in bh1770_prox_read_result()
475 	    chip->prox_force_update)  in bh1770_prox_read_result()
476 		chip->prox_persistence_counter = chip->prox_persistence;  in bh1770_prox_read_result()
478 	chip->prox_force_update = false;  in bh1770_prox_read_result()
482 		if (chip->prox_persistence_counter < chip->prox_persistence) {  in bh1770_prox_read_result()
483 			chip->prox_persistence_counter++;  in bh1770_prox_read_result()
490 		chip->prox_persistence_counter = 0;  in bh1770_prox_read_result()
492 		chip->prox_data = 0;  in bh1770_prox_read_result()
498 		bh1770_prox_rate(chip, mode);  in bh1770_prox_read_result()
499 		sysfs_notify(&chip->client->dev.kobj, NULL, "prox0_raw");  in bh1770_prox_read_result()
505 static int bh1770_detect(struct bh1770_chip *chip)  in bh1770_detect()  argument
507 	struct i2c_client *client = chip->client;  in bh1770_detect()
521 	chip->revision = (part & BH1770_REV_MASK) >> BH1770_REV_SHIFT;  in bh1770_detect()
522 	chip->prox_coef = BH1770_COEF_SCALER;  in bh1770_detect()
523 	chip->prox_const = 0;  in bh1770_detect()
524 	chip->lux_cf = BH1770_NEUTRAL_CF;  in bh1770_detect()
528 		snprintf(chip->chipname, sizeof(chip->chipname), "BH1770GLC");  in bh1770_detect()
534 		snprintf(chip->chipname, sizeof(chip->chipname), "SFH7770");  in bh1770_detect()
536 		chip->prox_coef = 819; /* 0.8 * BH1770_COEF_SCALER */  in bh1770_detect()
537 		chip->prox_const = 40;  in bh1770_detect()
559 	struct bh1770_chip *chip =  in bh1770_prox_work()  local
562 	mutex_lock(&chip->mutex);  in bh1770_prox_work()
563 	bh1770_prox_read_result(chip);  in bh1770_prox_work()
564 	mutex_unlock(&chip->mutex);  in bh1770_prox_work()
570 	struct bh1770_chip *chip = data;  in bh1770_irq()  local
574 	mutex_lock(&chip->mutex);  in bh1770_irq()
575 	status = i2c_smbus_read_byte_data(chip->client, BH1770_ALS_PS_STATUS);  in bh1770_irq()
578 	i2c_smbus_read_byte_data(chip->client, BH1770_INTERRUPT);  in bh1770_irq()
585 		bh1770_lux_get_result(chip);  in bh1770_irq()
586 		if (unlikely(chip->lux_wait_result)) {  in bh1770_irq()
587 			chip->lux_wait_result = false;  in bh1770_irq()
588 			wake_up(&chip->wait);  in bh1770_irq()
589 			bh1770_lux_update_thresholds(chip,  in bh1770_irq()
590 						chip->lux_threshold_hi,  in bh1770_irq()
591 						chip->lux_threshold_lo);  in bh1770_irq()
596 	i2c_smbus_write_byte_data(chip->client, BH1770_INTERRUPT,  in bh1770_irq()
600 		sysfs_notify(&chip->client->dev.kobj, NULL, "lux0_input");  in bh1770_irq()
602 	if (chip->int_mode_prox && (status & BH1770_INT_LEDS_INT)) {  in bh1770_irq()
603 		rate = prox_rates_ms[chip->prox_rate_threshold];  in bh1770_irq()
604 		bh1770_prox_read_result(chip);  in bh1770_irq()
608 	i2c_smbus_write_byte_data(chip->client, BH1770_INTERRUPT,  in bh1770_irq()
609 				  (chip->int_mode_lux << 1) |  in bh1770_irq()
610 				  (chip->int_mode_prox << 0));  in bh1770_irq()
611 	mutex_unlock(&chip->mutex);  in bh1770_irq()
622 		cancel_delayed_work_sync(&chip->prox_work);  in bh1770_irq()
623 		schedule_delayed_work(&chip->prox_work,  in bh1770_irq()
633 	struct bh1770_chip *chip =  dev_get_drvdata(dev);  in bh1770_power_state_store()  local
641 	mutex_lock(&chip->mutex);  in bh1770_power_state_store()
645 		ret = bh1770_lux_rate(chip, chip->lux_rate_index);  in bh1770_power_state_store()
651 		ret = bh1770_lux_interrupt_control(chip, BH1770_ENABLE);  in bh1770_power_state_store()
658 		bh1770_lux_update_thresholds(chip, BH1770_LUX_DEF_THRES,  in bh1770_power_state_store()
661 		chip->lux_wait_result = true;  in bh1770_power_state_store()
662 		bh1770_prox_mode_control(chip);  in bh1770_power_state_store()
668 	mutex_unlock(&chip->mutex);  in bh1770_power_state_store()
681 	struct bh1770_chip *chip =  dev_get_drvdata(dev);  in bh1770_lux_result_show()  local
686 		return -EIO; /* Chip is not enabled at all */  in bh1770_lux_result_show()
688 	timeout = wait_event_interruptible_timeout(chip->wait,  in bh1770_lux_result_show()
689 					!chip->lux_wait_result,  in bh1770_lux_result_show()
694 	mutex_lock(&chip->mutex);  in bh1770_lux_result_show()
695 	ret = sprintf(buf, "%d\n", bh1770_lux_read_result(chip));  in bh1770_lux_result_show()
696 	mutex_unlock(&chip->mutex);  in bh1770_lux_result_show()
711 	struct bh1770_chip *chip =  dev_get_drvdata(dev);  in bh1770_prox_enable_store()  local
719 	mutex_lock(&chip->mutex);  in bh1770_prox_enable_store()
721 	if (!chip->prox_enable_count)  in bh1770_prox_enable_store()
722 		chip->prox_data = 0;  in bh1770_prox_enable_store()
725 		chip->prox_enable_count++;  in bh1770_prox_enable_store()
726 	else if (chip->prox_enable_count > 0)  in bh1770_prox_enable_store()
727 		chip->prox_enable_count--;  in bh1770_prox_enable_store()
731 	/* Run control only when chip is powered on */  in bh1770_prox_enable_store()
733 		bh1770_prox_mode_control(chip);  in bh1770_prox_enable_store()
735 	mutex_unlock(&chip->mutex);  in bh1770_prox_enable_store()
742 	struct bh1770_chip *chip =  dev_get_drvdata(dev);  in bh1770_prox_enable_show()  local
745 	mutex_lock(&chip->mutex);  in bh1770_prox_enable_show()
746 	len = sprintf(buf, "%d\n", chip->prox_enable_count);  in bh1770_prox_enable_show()
747 	mutex_unlock(&chip->mutex);  in bh1770_prox_enable_show()
754 	struct bh1770_chip *chip =  dev_get_drvdata(dev);  in bh1770_prox_result_show()  local
757 	mutex_lock(&chip->mutex);  in bh1770_prox_result_show()
758 	if (chip->prox_enable_count && !pm_runtime_suspended(dev))  in bh1770_prox_result_show()
759 		ret = sprintf(buf, "%d\n", chip->prox_data);  in bh1770_prox_result_show()
762 	mutex_unlock(&chip->mutex);  in bh1770_prox_result_show()
786 	struct bh1770_chip *chip =  dev_get_drvdata(dev);  in bh1770_get_prox_rate_above()  local
787 	return sprintf(buf, "%d\n", prox_rates_hz[chip->prox_rate_threshold]);  in bh1770_get_prox_rate_above()
793 	struct bh1770_chip *chip =  dev_get_drvdata(dev);  in bh1770_get_prox_rate_below()  local
794 	return sprintf(buf, "%d\n", prox_rates_hz[chip->prox_rate]);  in bh1770_get_prox_rate_below()
811 	struct bh1770_chip *chip =  dev_get_drvdata(dev);  in bh1770_set_prox_rate_above()  local
819 	mutex_lock(&chip->mutex);  in bh1770_set_prox_rate_above()
820 	chip->prox_rate_threshold = bh1770_prox_rate_validate(value);  in bh1770_set_prox_rate_above()
821 	mutex_unlock(&chip->mutex);  in bh1770_set_prox_rate_above()
829 	struct bh1770_chip *chip =  dev_get_drvdata(dev);  in bh1770_set_prox_rate_below()  local
837 	mutex_lock(&chip->mutex);  in bh1770_set_prox_rate_below()
838 	chip->prox_rate = bh1770_prox_rate_validate(value);  in bh1770_set_prox_rate_below()
839 	mutex_unlock(&chip->mutex);  in bh1770_set_prox_rate_below()
846 	struct bh1770_chip *chip =  dev_get_drvdata(dev);  in bh1770_get_prox_thres()  local
847 	return sprintf(buf, "%d\n", chip->prox_threshold);  in bh1770_get_prox_thres()
854 	struct bh1770_chip *chip =  dev_get_drvdata(dev);  in bh1770_set_prox_thres()  local
865 	mutex_lock(&chip->mutex);  in bh1770_set_prox_thres()
866 	chip->prox_threshold = value;  in bh1770_set_prox_thres()
867 	ret = bh1770_prox_set_threshold(chip);  in bh1770_set_prox_thres()
868 	mutex_unlock(&chip->mutex);  in bh1770_set_prox_thres()
877 	struct bh1770_chip *chip = dev_get_drvdata(dev);  in bh1770_prox_persistence_show()  local
879 	return sprintf(buf, "%u\n", chip->prox_persistence);  in bh1770_prox_persistence_show()
886 	struct bh1770_chip *chip = dev_get_drvdata(dev);  in bh1770_prox_persistence_store()  local
897 	chip->prox_persistence = value;  in bh1770_prox_persistence_store()
905 	struct bh1770_chip *chip = dev_get_drvdata(dev);  in bh1770_prox_abs_thres_show()  local
906 	return sprintf(buf, "%u\n", chip->prox_abs_thres);  in bh1770_prox_abs_thres_show()
913 	struct bh1770_chip *chip = dev_get_drvdata(dev);  in bh1770_prox_abs_thres_store()  local
924 	chip->prox_abs_thres = value;  in bh1770_prox_abs_thres_store()
932 	struct bh1770_chip *chip =  dev_get_drvdata(dev);  in bh1770_chip_id_show()  local
933 	return sprintf(buf, "%s rev %d\n", chip->chipname, chip->revision);  in bh1770_chip_id_show()
945 	struct bh1770_chip *chip = dev_get_drvdata(dev);  in bh1770_lux_calib_show()  local
948 	mutex_lock(&chip->mutex);  in bh1770_lux_calib_show()
949 	len = sprintf(buf, "%u\n", chip->lux_calib);  in bh1770_lux_calib_show()
950 	mutex_unlock(&chip->mutex);  in bh1770_lux_calib_show()
958 	struct bh1770_chip *chip = dev_get_drvdata(dev);  in bh1770_lux_calib_store()  local
968 	mutex_lock(&chip->mutex);  in bh1770_lux_calib_store()
969 	old_calib = chip->lux_calib;  in bh1770_lux_calib_store()
970 	chip->lux_calib = value;  in bh1770_lux_calib_store()
971 	new_corr = bh1770_get_corr_value(chip);  in bh1770_lux_calib_store()
973 		chip->lux_calib = old_calib;  in bh1770_lux_calib_store()
974 		mutex_unlock(&chip->mutex);  in bh1770_lux_calib_store()
977 	chip->lux_corr = new_corr;  in bh1770_lux_calib_store()
979 	bh1770_lux_update_thresholds(chip, chip->lux_threshold_hi,  in bh1770_lux_calib_store()
980 				chip->lux_threshold_lo);  in bh1770_lux_calib_store()
982 	mutex_unlock(&chip->mutex);  in bh1770_lux_calib_store()
1001 	struct bh1770_chip *chip =  dev_get_drvdata(dev);  in bh1770_get_lux_rate()  local
1002 	return sprintf(buf, "%d\n", lux_rates_hz[chip->lux_rate_index]);  in bh1770_get_lux_rate()
1009 	struct bh1770_chip *chip =  dev_get_drvdata(dev);  in bh1770_set_lux_rate()  local
1021 	mutex_lock(&chip->mutex);  in bh1770_set_lux_rate()
1022 	chip->lux_rate_index = i;  in bh1770_set_lux_rate()
1023 	ret = bh1770_lux_rate(chip, i);  in bh1770_set_lux_rate()
1024 	mutex_unlock(&chip->mutex);  in bh1770_set_lux_rate()
1035 	struct bh1770_chip *chip =  dev_get_drvdata(dev);  in bh1770_get_lux_thresh_above()  local
1036 	return sprintf(buf, "%d\n", chip->lux_threshold_hi);  in bh1770_get_lux_thresh_above()
1042 	struct bh1770_chip *chip =  dev_get_drvdata(dev);  in bh1770_get_lux_thresh_below()  local
1043 	return sprintf(buf, "%d\n", chip->lux_threshold_lo);  in bh1770_get_lux_thresh_below()
1046 static ssize_t bh1770_set_lux_thresh(struct bh1770_chip *chip, u16 *target,  in bh1770_set_lux_thresh()  argument
1059 	mutex_lock(&chip->mutex);  in bh1770_set_lux_thresh()
1065 	if (!chip->lux_wait_result)  in bh1770_set_lux_thresh()
1066 		ret = bh1770_lux_update_thresholds(chip,  in bh1770_set_lux_thresh()
1067 						chip->lux_threshold_hi,  in bh1770_set_lux_thresh()
1068 						chip->lux_threshold_lo);  in bh1770_set_lux_thresh()
1069 	mutex_unlock(&chip->mutex);  in bh1770_set_lux_thresh()
1078 	struct bh1770_chip *chip =  dev_get_drvdata(dev);  in bh1770_set_lux_thresh_above()  local
1079 	int ret = bh1770_set_lux_thresh(chip, &chip->lux_threshold_hi, buf);  in bh1770_set_lux_thresh_above()
1089 	struct bh1770_chip *chip =  dev_get_drvdata(dev);  in bh1770_set_lux_thresh_below()  local
1090 	int ret = bh1770_set_lux_thresh(chip, &chip->lux_threshold_lo, buf);  in bh1770_set_lux_thresh_below()
1168 	struct bh1770_chip *chip;  in bh1770_probe()  local
1171 	chip = devm_kzalloc(&client->dev, sizeof *chip, GFP_KERNEL);  in bh1770_probe()
1172 	if (!chip)  in bh1770_probe()
1175 	i2c_set_clientdata(client, chip);  in bh1770_probe()
1176 	chip->client  = client;  in bh1770_probe()
1178 	mutex_init(&chip->mutex);  in bh1770_probe()
1179 	init_waitqueue_head(&chip->wait);  in bh1770_probe()
1180 	INIT_DELAYED_WORK(&chip->prox_work, bh1770_prox_work);  in bh1770_probe()
1187 	chip->pdata		= client->dev.platform_data;  in bh1770_probe()
1188 	chip->lux_calib		= BH1770_LUX_NEUTRAL_CALIB_VALUE;  in bh1770_probe()
1189 	chip->lux_rate_index	= BH1770_LUX_DEFAULT_RATE;  in bh1770_probe()
1190 	chip->lux_threshold_lo	= BH1770_LUX_DEF_THRES;  in bh1770_probe()
1191 	chip->lux_threshold_hi	= BH1770_LUX_DEF_THRES;  in bh1770_probe()
1193 	if (chip->pdata->glass_attenuation == 0)  in bh1770_probe()
1194 		chip->lux_ga = BH1770_NEUTRAL_GA;  in bh1770_probe()
1196 		chip->lux_ga = chip->pdata->glass_attenuation;  in bh1770_probe()
1198 	chip->prox_threshold	= BH1770_PROX_DEF_THRES;  in bh1770_probe()
1199 	chip->prox_led		= chip->pdata->led_def_curr;  in bh1770_probe()
1200 	chip->prox_abs_thres	= BH1770_PROX_DEF_ABS_THRES;  in bh1770_probe()
1201 	chip->prox_persistence	= BH1770_DEFAULT_PERSISTENCE;  in bh1770_probe()
1202 	chip->prox_rate_threshold = BH1770_PROX_DEF_RATE_THRESH;  in bh1770_probe()
1203 	chip->prox_rate		= BH1770_PROX_DEFAULT_RATE;  in bh1770_probe()
1204 	chip->prox_data		= 0;  in bh1770_probe()
1206 	chip->regs[0].supply = reg_vcc;  in bh1770_probe()
1207 	chip->regs[1].supply = reg_vleds;  in bh1770_probe()
1210 				      ARRAY_SIZE(chip->regs), chip->regs);  in bh1770_probe()
1216 	err = regulator_bulk_enable(ARRAY_SIZE(chip->regs),  in bh1770_probe()
1217 				chip->regs);  in bh1770_probe()
1224 	err = bh1770_detect(chip);  in bh1770_probe()
1228 	/* Start chip */  in bh1770_probe()
1229 	bh1770_chip_on(chip);  in bh1770_probe()
1233 	chip->lux_corr = bh1770_get_corr_value(chip);  in bh1770_probe()
1234 	if (chip->lux_corr == 0) {  in bh1770_probe()
1240 	if (chip->pdata->setup_resources) {  in bh1770_probe()
1241 		err = chip->pdata->setup_resources();  in bh1770_probe()
1248 	err = sysfs_create_group(&chip->client->dev.kobj,  in bh1770_probe()
1251 		dev_err(&chip->client->dev, "Sysfs registration failed\n");  in bh1770_probe()
1256 	 * Chip needs level triggered interrupt to work. However,  in bh1770_probe()
1264 				"bh1770", chip);  in bh1770_probe()
1270 	regulator_bulk_disable(ARRAY_SIZE(chip->regs), chip->regs);  in bh1770_probe()
1273 	sysfs_remove_group(&chip->client->dev.kobj,  in bh1770_probe()
1276 	if (chip->pdata->release_resources)  in bh1770_probe()
1277 		chip->pdata->release_resources();  in bh1770_probe()
1279 	regulator_bulk_disable(ARRAY_SIZE(chip->regs), chip->regs);  in bh1770_probe()
1285 	struct bh1770_chip *chip = i2c_get_clientdata(client);  in bh1770_remove()  local
1287 	free_irq(client->irq, chip);  in bh1770_remove()
1289 	sysfs_remove_group(&chip->client->dev.kobj,  in bh1770_remove()
1292 	if (chip->pdata->release_resources)  in bh1770_remove()
1293 		chip->pdata->release_resources();  in bh1770_remove()
1295 	cancel_delayed_work_sync(&chip->prox_work);  in bh1770_remove()
1298 		bh1770_chip_off(chip);  in bh1770_remove()
1310 	struct bh1770_chip *chip = i2c_get_clientdata(client);  in bh1770_suspend()  local
1312 	bh1770_chip_off(chip);  in bh1770_suspend()
1320 	struct bh1770_chip *chip = i2c_get_clientdata(client);  in bh1770_resume()  local
1323 	bh1770_chip_on(chip);  in bh1770_resume()
1330 		ret = bh1770_lux_rate(chip, chip->lux_rate_index);  in bh1770_resume()
1331 		ret |= bh1770_lux_interrupt_control(chip, BH1770_ENABLE);  in bh1770_resume()
1334 		bh1770_lux_update_thresholds(chip, BH1770_LUX_DEF_THRES,  in bh1770_resume()
1337 		chip->lux_wait_result = true;  in bh1770_resume()
1338 		bh1770_prox_mode_control(chip);  in bh1770_resume()
1348 	struct bh1770_chip *chip = i2c_get_clientdata(client);  in bh1770_runtime_suspend()  local
1350 	bh1770_chip_off(chip);  in bh1770_runtime_suspend()
1358 	struct bh1770_chip *chip = i2c_get_clientdata(client);  in bh1770_runtime_resume()  local
1360 	bh1770_chip_on(chip);  in bh1770_runtime_resume()