25 	unsigned int		*levels;  member
80 	if (pb->levels)  in compute_duty_cycle()
81 		duty_cycle = pb->levels[brightness];  in compute_duty_cycle()
190 	 * Once we have 4096 levels there's little point going much higher...  in pwm_backlight_brightness_default()
197 	data->levels = devm_kcalloc(dev, data->max_brightness,  in pwm_backlight_brightness_default()
198 				    sizeof(*data->levels), GFP_KERNEL);  in pwm_backlight_brightness_default()
199 	if (!data->levels)  in pwm_backlight_brightness_default()
209 		data->levels[i] = (unsigned int)retval;  in pwm_backlight_brightness_default()
244 	 * Determine the number of brightness levels, if this property is not  in pwm_backlight_parse_dt()
245 	 * set a default table of brightness levels will be used.  in pwm_backlight_parse_dt()
247 	prop = of_find_property(node, "brightness-levels", &length);  in pwm_backlight_parse_dt()
253 	/* read brightness levels from DT property */  in pwm_backlight_parse_dt()
255 		data->levels = devm_kcalloc(dev, num_levels,  in pwm_backlight_parse_dt()
256 					    sizeof(*data->levels), GFP_KERNEL);  in pwm_backlight_parse_dt()
257 		if (!data->levels)  in pwm_backlight_parse_dt()
260 		ret = of_property_read_u32_array(node, "brightness-levels",  in pwm_backlight_parse_dt()
261 						 data->levels,  in pwm_backlight_parse_dt()
275 		 * interpolation between each of the values of brightness levels  in pwm_backlight_parse_dt()
283 		 * brightness-levels table, otherwise we can't interpolate  in pwm_backlight_parse_dt()
299 			 * Recalculate the number of brightness levels, now  in pwm_backlight_parse_dt()
301 			 * steps between two levels.  in pwm_backlight_parse_dt()
304 			dev_dbg(dev, "new number of brightness levels: %d\n",  in pwm_backlight_parse_dt()
308 			 * Create a new table of brightness levels with all the  in pwm_backlight_parse_dt()
323 				y1 = data->levels[i];  in pwm_backlight_parse_dt()
324 				y2 = data->levels[i + 1];  in pwm_backlight_parse_dt()
337 			 * brightness levels table and replace for the  in pwm_backlight_parse_dt()
340 			devm_kfree(dev, data->levels);  in pwm_backlight_parse_dt()
341 			data->levels = table;  in pwm_backlight_parse_dt()
375 	unsigned int min_val = data->levels[0];  in pwm_backlight_is_linear()
376 	unsigned int max_val = data->levels[nlevels - 1];  in pwm_backlight_is_linear()
388 		unsigned int delta = abs(linear_value - data->levels[i]);  in pwm_backlight_is_linear()
530 	if (data->levels) {  in pwm_backlight_probe()
531 		pb->levels = data->levels;  in pwm_backlight_probe()
534 		 * For the DT case, only when brightness levels is defined  in pwm_backlight_probe()
535 		 * data->levels is filled. For the non-DT case, data->levels  in pwm_backlight_probe()
539 			if (data->levels[i] > pb->scale)  in pwm_backlight_probe()
540 				pb->scale = data->levels[i];  in pwm_backlight_probe()
548 		 * If no brightness levels are provided and max_brightness is  in pwm_backlight_probe()
550 		 * max_brightness is set to 0 when brightness levels is not  in pwm_backlight_probe()
567 			if (data->levels[i] > pb->scale)  in pwm_backlight_probe()
568 				pb->scale = data->levels[i];  in pwm_backlight_probe()
570 			pb->levels = data->levels;  in pwm_backlight_probe()