31 	unsigned int		*levels;  member
102 	if (pb->levels)  in compute_duty_cycle()
103 		duty_cycle = pb->levels[brightness];  in compute_duty_cycle()
206 	 * Once we have 4096 levels there's little point going much higher...  in pwm_backlight_brightness_default()
213 	data->levels = devm_kcalloc(dev, data->max_brightness,  in pwm_backlight_brightness_default()
214 				    sizeof(*data->levels), GFP_KERNEL);  in pwm_backlight_brightness_default()
215 	if (!data->levels)  in pwm_backlight_brightness_default()
225 		data->levels[i] = (unsigned int)retval;  in pwm_backlight_brightness_default()
261 	 * Determine the number of brightness levels, if this property is not  in pwm_backlight_parse_dt()
262 	 * set a default table of brightness levels will be used.  in pwm_backlight_parse_dt()
264 	prop = of_find_property(node, "brightness-levels", &length);  in pwm_backlight_parse_dt()
270 	/* read brightness levels from DT property */  in pwm_backlight_parse_dt()
272 		size_t size = sizeof(*data->levels) * data->max_brightness;  in pwm_backlight_parse_dt()
275 		data->levels = devm_kzalloc(dev, size, GFP_KERNEL);  in pwm_backlight_parse_dt()
276 		if (!data->levels)  in pwm_backlight_parse_dt()
279 		ret = of_property_read_u32_array(node, "brightness-levels",  in pwm_backlight_parse_dt()
280 						 data->levels,  in pwm_backlight_parse_dt()
294 		 * interpolation between each of the values of brightness levels  in pwm_backlight_parse_dt()
302 		 * brightness-levels table, otherwise we can't interpolate  in pwm_backlight_parse_dt()
312 			 * Recalculate the number of brightness levels, now  in pwm_backlight_parse_dt()
314 			 * steps between two levels.  in pwm_backlight_parse_dt()
317 				if ((data->levels[i + 1] - data->levels[i]) /  in pwm_backlight_parse_dt()
324 			dev_dbg(dev, "new number of brightness levels: %d\n",  in pwm_backlight_parse_dt()
328 			 * Create a new table of brightness levels with all the  in pwm_backlight_parse_dt()
339 				value = data->levels[i];  in pwm_backlight_parse_dt()
340 				n = (data->levels[i + 1] - value) / num_steps;  in pwm_backlight_parse_dt()
348 					table[levels_count] = data->levels[i];  in pwm_backlight_parse_dt()
352 			table[levels_count] = data->levels[i];  in pwm_backlight_parse_dt()
356 			 * brightness levels table and replace for the  in pwm_backlight_parse_dt()
359 			devm_kfree(dev, data->levels);  in pwm_backlight_parse_dt()
360 			data->levels = table;  in pwm_backlight_parse_dt()
364 			 * of brightness levels.  in pwm_backlight_parse_dt()
400 	unsigned int min_val = data->levels[0];  in pwm_backlight_is_linear()
401 	unsigned int max_val = data->levels[nlevels - 1];  in pwm_backlight_is_linear()
413 		unsigned int delta = abs(linear_value - data->levels[i]);  in pwm_backlight_is_linear()
559 	if (data->levels) {  in pwm_backlight_probe()
560 		pb->levels = data->levels;  in pwm_backlight_probe()
563 		 * For the DT case, only when brightness levels is defined  in pwm_backlight_probe()
564 		 * data->levels is filled. For the non-DT case, data->levels  in pwm_backlight_probe()
568 			if (data->levels[i] > pb->scale)  in pwm_backlight_probe()
569 				pb->scale = data->levels[i];  in pwm_backlight_probe()
577 		 * If no brightness levels are provided and max_brightness is  in pwm_backlight_probe()
579 		 * max_brightness is set to 0 when brightness levels is not  in pwm_backlight_probe()
596 			if (data->levels[i] > pb->scale)  in pwm_backlight_probe()
597 				pb->scale = data->levels[i];  in pwm_backlight_probe()
599 			pb->levels = data->levels;  in pwm_backlight_probe()