33 	/* Early return when display use other mechanism to enable backlight. */  in set_aux_backlight_enable()
50 		drm_dbg_kms(&i915->drm, "Failed to %s aux backlight\n",  in set_aux_backlight_enable()
75  * Read the current backlight value from DPCD register(s) based
90 		return connector->panel.backlight.max;  in intel_dp_aux_get_backlight()
106  * Sends the current backlight level over the aux channel, checking if its using
127 			    "Failed to write aux backlight level\n");  in intel_dp_aux_set_backlight()
144 	const u8 pn = connector->panel.backlight.pwmgen_bit_count;  in intel_dp_aux_set_pwm_freq()
147 	freq = dev_priv->vbt.backlight.pwm_freq_hz;  in intel_dp_aux_set_pwm_freq()
150 			    "Use panel default backlight frequency\n");  in intel_dp_aux_set_pwm_freq()
170 			    "Failed to write aux backlight freq\n");  in intel_dp_aux_set_pwm_freq()
204 				       panel->backlight.pwmgen_bit_count) < 0)  in intel_dp_aux_enable_backlight()
224 				    "Failed to write aux backlight mode\n");  in intel_dp_aux_enable_backlight()
229 				   connector->panel.backlight.level);  in intel_dp_aux_enable_backlight()
257 	freq = i915->vbt.backlight.pwm_freq_hz;  in intel_dp_aux_calc_max_backlight()
258 	drm_dbg_kms(&i915->drm, "VBT defined backlight frequency %u Hz\n",  in intel_dp_aux_calc_max_backlight()
262 			    "Use panel default backlight frequency\n");  in intel_dp_aux_calc_max_backlight()
294 			    "VBT defined backlight frequency out of range\n");  in intel_dp_aux_calc_max_backlight()
312 	panel->backlight.pwmgen_bit_count = pn;  in intel_dp_aux_calc_max_backlight()
324 	panel->backlight.max = intel_dp_aux_calc_max_backlight(connector);  in intel_dp_aux_setup_backlight()
325 	if (!panel->backlight.max)  in intel_dp_aux_setup_backlight()
328 	panel->backlight.min = 0;  in intel_dp_aux_setup_backlight()
329 	panel->backlight.level = intel_dp_aux_get_backlight(connector);  in intel_dp_aux_setup_backlight()
330 	panel->backlight.enabled = intel_dp_aux_backlight_dpcd_mode(connector) &&  in intel_dp_aux_setup_backlight()
331 				   panel->backlight.level != 0;  in intel_dp_aux_setup_backlight()
343 	 * the panel can support backlight control over the aux channel  in intel_dp_aux_display_control_capable()
348 		drm_dbg_kms(&i915->drm, "AUX Backlight Control Supported!\n");  in intel_dp_aux_display_control_capable()
365 	 * There are a lot of machines that don't advertise the backlight  in intel_dp_aux_init_backlight_funcs()
368 	if (i915->vbt.backlight.type !=  in intel_dp_aux_init_backlight_funcs()
374 			 "Panel advertises DPCD backlight support, but "  in intel_dp_aux_init_backlight_funcs()
375 			 "VBT disagrees. If your backlight controls "  in intel_dp_aux_init_backlight_funcs()
383 	panel->backlight.setup = intel_dp_aux_setup_backlight;  in intel_dp_aux_init_backlight_funcs()
384 	panel->backlight.enable = intel_dp_aux_enable_backlight;  in intel_dp_aux_init_backlight_funcs()
385 	panel->backlight.disable = intel_dp_aux_disable_backlight;  in intel_dp_aux_init_backlight_funcs()
386 	panel->backlight.set = intel_dp_aux_set_backlight;  in intel_dp_aux_init_backlight_funcs()
387 	panel->backlight.get = intel_dp_aux_get_backlight;  in intel_dp_aux_init_backlight_funcs()