26 	unsigned int		*levels;  member
97 	if (pb->levels)  in compute_duty_cycle()
98 		duty_cycle = pb->levels[brightness];  in compute_duty_cycle()
201 	 * Once we have 4096 levels there's little point going much higher...  in pwm_backlight_brightness_default()
208 	data->levels = devm_kcalloc(dev, data->max_brightness,  in pwm_backlight_brightness_default()
209 				    sizeof(*data->levels), GFP_KERNEL);  in pwm_backlight_brightness_default()
210 	if (!data->levels)  in pwm_backlight_brightness_default()
220 		data->levels[i] = (unsigned int)retval;  in pwm_backlight_brightness_default()
256 	 * Determine the number of brightness levels, if this property is not  in pwm_backlight_parse_dt()
257 	 * set a default table of brightness levels will be used.  in pwm_backlight_parse_dt()
259 	prop = of_find_property(node, "brightness-levels", &length);  in pwm_backlight_parse_dt()
265 	/* read brightness levels from DT property */  in pwm_backlight_parse_dt()
267 		size_t size = sizeof(*data->levels) * data->max_brightness;  in pwm_backlight_parse_dt()
270 		data->levels = devm_kzalloc(dev, size, GFP_KERNEL);  in pwm_backlight_parse_dt()
271 		if (!data->levels)  in pwm_backlight_parse_dt()
274 		ret = of_property_read_u32_array(node, "brightness-levels",  in pwm_backlight_parse_dt()
275 						 data->levels,  in pwm_backlight_parse_dt()
289 		 * interpolation between each of the values of brightness levels  in pwm_backlight_parse_dt()
297 		 * brightness-levels table, otherwise we can't interpolate  in pwm_backlight_parse_dt()
307 			 * Recalculate the number of brightness levels, now  in pwm_backlight_parse_dt()
309 			 * steps between two levels.  in pwm_backlight_parse_dt()
312 				if ((data->levels[i + 1] - data->levels[i]) /  in pwm_backlight_parse_dt()
319 			dev_dbg(dev, "new number of brightness levels: %d\n",  in pwm_backlight_parse_dt()
323 			 * Create a new table of brightness levels with all the  in pwm_backlight_parse_dt()
334 				value = data->levels[i];  in pwm_backlight_parse_dt()
335 				n = (data->levels[i + 1] - value) / num_steps;  in pwm_backlight_parse_dt()
343 					table[levels_count] = data->levels[i];  in pwm_backlight_parse_dt()
347 			table[levels_count] = data->levels[i];  in pwm_backlight_parse_dt()
351 			 * brightness levels table and replace for the  in pwm_backlight_parse_dt()
354 			devm_kfree(dev, data->levels);  in pwm_backlight_parse_dt()
355 			data->levels = table;  in pwm_backlight_parse_dt()
359 			 * of brightness levels.  in pwm_backlight_parse_dt()
395 	unsigned int min_val = data->levels[0];  in pwm_backlight_is_linear()
396 	unsigned int max_val = data->levels[nlevels - 1];  in pwm_backlight_is_linear()
408 		unsigned int delta = abs(linear_value - data->levels[i]);  in pwm_backlight_is_linear()
552 	if (data->levels) {  in pwm_backlight_probe()
553 		pb->levels = data->levels;  in pwm_backlight_probe()
556 		 * For the DT case, only when brightness levels is defined  in pwm_backlight_probe()
557 		 * data->levels is filled. For the non-DT case, data->levels  in pwm_backlight_probe()
561 			if (data->levels[i] > pb->scale)  in pwm_backlight_probe()
562 				pb->scale = data->levels[i];  in pwm_backlight_probe()
570 		 * If no brightness levels are provided and max_brightness is  in pwm_backlight_probe()
572 		 * max_brightness is set to 0 when brightness levels is not  in pwm_backlight_probe()
589 			if (data->levels[i] > pb->scale)  in pwm_backlight_probe()
590 				pb->scale = data->levels[i];  in pwm_backlight_probe()
592 			pb->levels = data->levels;  in pwm_backlight_probe()