i915/display/intel_backlight.c

62 static u32 clamp_user_to_hw(struct intel_connector *connector,
65 	struct intel_panel *panel = &connector->panel;
75 static u32 scale_hw_to_user(struct intel_connector *connector,
78 	struct intel_panel *panel = &connector->panel;
84 u32 intel_backlight_invert_pwm_level(struct intel_connector *connector, u32 val)
86 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
87 	struct intel_panel *panel = &connector->panel;
104 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
105 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
106 	struct intel_panel *panel = &connector->panel;
109 		    connector->base.base.id, connector->base.name, val);
113 u32 intel_backlight_level_to_pwm(struct intel_connector *connector, u32 val)
115 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
116 	struct intel_panel *panel = &connector->panel;
124 	return intel_backlight_invert_pwm_level(connector, val);
127 u32 intel_backlight_level_from_pwm(struct intel_connector *connector, u32 val)
129 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
130 	struct intel_panel *panel = &connector->panel;
143 static u32 lpt_get_backlight(struct intel_connector *connector, enum pipe unused)
145 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
150 static u32 pch_get_backlight(struct intel_connector *connector, enum pipe unused)
152 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
157 static u32 i9xx_get_backlight(struct intel_connector *connector, enum pipe unused)
159 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
160 	struct intel_panel *panel = &connector->panel;
177 static u32 vlv_get_backlight(struct intel_connector *connector, enum pipe pipe)
179 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
187 static u32 bxt_get_backlight(struct intel_connector *connector, enum pipe unused)
189 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
190 	struct intel_panel *panel = &connector->panel;
195 static u32 ext_pwm_get_backlight(struct intel_connector *connector, enum pipe unused)
200 	struct intel_panel *panel = &connector->panel;
210 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
211 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
220 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
221 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
230 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
231 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
232 	struct intel_panel *panel = &connector->panel;
258 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
259 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
269 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
270 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
271 	struct intel_panel *panel = &connector->panel;
280 	struct intel_panel *panel = &to_intel_connector(conn_state->connector)->panel;
290 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
291 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
292 	struct intel_panel *panel = &connector->panel;
295 		    connector->base.base.id, connector->base.name, level);
306 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
307 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
308 	struct intel_panel *panel = &connector->panel;
324 	hw_level = clamp_user_to_hw(connector, user_level, user_max);
329 			scale_hw_to_user(connector,
341 	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
342 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
358 			    connector->base.base.id, connector->base.name);
367 	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
368 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
384 	struct drm_i915_private *i915 = to_i915(old_conn_state->connector->dev);
393 	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
394 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
404 	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
405 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
406 	struct intel_panel *panel = &connector->panel;
419 	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
420 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
421 	struct intel_panel *panel = &connector->panel;
433 	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
434 	struct intel_panel *panel = &connector->panel;
445 	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
446 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
447 	struct intel_panel *panel = &connector->panel;
460 			    connector->base.base.id, connector->base.name);
477 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
478 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
479 	struct intel_panel *panel = &connector->panel;
485 			    connector->base.base.id, connector->base.name);
521 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
522 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
523 	struct intel_panel *panel = &connector->panel;
530 			    connector->base.base.id, connector->base.name);
538 			    connector->base.base.id, connector->base.name);
569 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
570 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
571 	struct intel_panel *panel = &connector->panel;
577 			    connector->base.base.id, connector->base.name);
609 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
610 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
611 	struct intel_panel *panel = &connector->panel;
618 			    connector->base.base.id, connector->base.name);
645 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
646 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
647 	struct intel_panel *panel = &connector->panel;
654 			    connector->base.base.id, connector->base.name);
676 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
677 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
678 	struct intel_panel *panel = &connector->panel;
687 				    connector->base.base.id, connector->base.name);
702 			    connector->base.base.id, connector->base.name);
726 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
727 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
728 	struct intel_panel *panel = &connector->panel;
759 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
760 	struct intel_panel *panel = &connector->panel;
771 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
772 	struct intel_panel *panel = &connector->panel;
780 				scale_hw_to_user(connector,
794 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
795 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
796 	struct intel_panel *panel = &connector->panel;
812 static u32 intel_panel_get_backlight(struct intel_connector *connector)
814 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
815 	struct intel_panel *panel = &connector->panel;
821 		val = panel->backlight.funcs->get(connector, intel_connector_get_pipe(connector));
830 static u32 scale_user_to_hw(struct intel_connector *connector,
833 	struct intel_panel *panel = &connector->panel;
843 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
844 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
845 	struct intel_panel *panel = &connector->panel;
855 	hw_level = scale_user_to_hw(connector, user_level, user_max);
866 	struct intel_connector *connector = bl_get_data(bd);
867 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
868 	struct intel_panel *panel = &connector->panel;
874 	intel_panel_set_backlight(connector->base.state, bd->props.brightness,
887 			panel->backlight.power(connector, enable);
900 	struct intel_connector *connector = bl_get_data(bd);
901 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
910 		hw_level = intel_panel_get_backlight(connector);
911 		ret = scale_hw_to_user(connector,
925 int intel_backlight_device_register(struct intel_connector *connector)
927 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
928 	struct intel_panel *panel = &connector->panel;
955 	props.brightness = scale_hw_to_user(connector,
974 		 * Using the same name independent of the drm device or connector
982 				 i915->drm.primary->index, connector->base.name);
986 	bd = backlight_device_register(name, connector->base.kdev, connector,
992 			connector->base.base.id, connector->base.name, name, PTR_ERR(bd));
1001 		    connector->base.base.id, connector->base.name, name);
1009 void intel_backlight_device_unregister(struct intel_connector *connector)
1011 	struct intel_panel *panel = &connector->panel;
1024 static u32 cnp_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
1026 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1035 static u32 bxt_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
1045 static u32 spt_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
1047 	struct intel_panel *panel = &connector->panel;
1063 static u32 lpt_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
1065 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1066 	struct intel_panel *panel = &connector->panel;
1086 static u32 pch_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
1088 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1102 static u32 i9xx_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
1104 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1120 static u32 i965_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
1122 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1138 static u32 vlv_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
1140 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1157 static u16 get_vbt_pwm_freq(struct intel_connector *connector)
1159 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1160 	u16 pwm_freq_hz = connector->panel.vbt.backlight.pwm_freq_hz;
1176 static u32 get_backlight_max_vbt(struct intel_connector *connector)
1178 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1179 	struct intel_panel *panel = &connector->panel;
1180 	u16 pwm_freq_hz = get_vbt_pwm_freq(connector);
1189 	pwm = panel->backlight.pwm_funcs->hz_to_pwm(connector, pwm_freq_hz);
1202 static u32 get_backlight_min_vbt(struct intel_connector *connector)
1204 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1205 	struct intel_panel *panel = &connector->panel;
1217 	min = clamp_t(int, connector->panel.vbt.backlight.min_brightness, 0, 64);
1218 	if (min != connector->panel.vbt.backlight.min_brightness) {
1221 			    connector->panel.vbt.backlight.min_brightness, min);
1228 static int lpt_setup_backlight(struct intel_connector *connector, enum pipe unused)
1230 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1231 	struct intel_panel *panel = &connector->panel;
1250 		panel->backlight.pwm_level_max = get_backlight_max_vbt(connector);
1255 	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
1264 		val = pch_get_backlight(connector, unused);
1270 		lpt_set_backlight(connector->base.state, val);
1280 		    connector->base.base.id, connector->base.name);
1285 static int pch_setup_backlight(struct intel_connector *connector, enum pipe unused)
1287 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1288 	struct intel_panel *panel = &connector->panel;
1298 		panel->backlight.pwm_level_max = get_backlight_max_vbt(connector);
1303 	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
1311 		    connector->base.base.id, connector->base.name);
1316 static int i9xx_setup_backlight(struct intel_connector *connector, enum pipe unused)
1318 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1319 	struct intel_panel *panel = &connector->panel;
1333 		panel->backlight.pwm_level_max = get_backlight_max_vbt(connector);
1343 	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
1345 	val = i9xx_get_backlight(connector, unused);
1346 	val = intel_backlight_invert_pwm_level(connector, val);
1353 		    connector->base.base.id, connector->base.name);
1358 static int i965_setup_backlight(struct intel_connector *connector, enum pipe unused)
1360 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1361 	struct intel_panel *panel = &connector->panel;
1372 		panel->backlight.pwm_level_max = get_backlight_max_vbt(connector);
1380 	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
1386 		    connector->base.base.id, connector->base.name);
1391 static int vlv_setup_backlight(struct intel_connector *connector, enum pipe pipe)
1393 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1394 	struct intel_panel *panel = &connector->panel;
1407 		panel->backlight.pwm_level_max = get_backlight_max_vbt(connector);
1412 	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
1418 		    connector->base.base.id, connector->base.name, pipe_name(pipe));
1424 bxt_setup_backlight(struct intel_connector *connector, enum pipe unused)
1426 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1427 	struct intel_panel *panel = &connector->panel;
1430 	panel->backlight.controller = connector->panel.vbt.backlight.controller;
1447 		panel->backlight.pwm_level_max = get_backlight_max_vbt(connector);
1452 	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
1458 		    connector->base.base.id, connector->base.name,
1489 cnp_setup_backlight(struct intel_connector *connector, enum pipe unused)
1491 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1492 	struct intel_panel *panel = &connector->panel;
1499 	panel->backlight.controller = connector->panel.vbt.backlight.controller;
1502 			    connector->base.base.id, connector->base.name,
1515 		panel->backlight.pwm_level_max = get_backlight_max_vbt(connector);
1520 	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
1526 		    connector->base.base.id, connector->base.name,
1532 static int ext_pwm_setup_backlight(struct intel_connector *connector,
1535 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1536 	struct intel_panel *panel = &connector->panel;
1541 	if (connector->panel.vbt.dsi.config->pwm_blc == PPS_BLC_PMIC) {
1551 			connector->base.base.id, connector->base.name, desc);
1557 	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
1566 		level = intel_backlight_invert_pwm_level(connector, level);
1570 			    connector->base.base.id, connector->base.name,
1572 			    get_vbt_pwm_freq(connector), level);
1576 			NSEC_PER_SEC / get_vbt_pwm_freq(connector);
1584 		    connector->base.base.id, connector->base.name, desc);
1591 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
1592 	struct intel_panel *panel = &connector->panel;
1595 					intel_backlight_invert_pwm_level(connector, level));
1598 static u32 intel_pwm_get_backlight(struct intel_connector *connector, enum pipe pipe)
1600 	struct intel_panel *panel = &connector->panel;
1602 	return intel_backlight_invert_pwm_level(connector,
1603 					    panel->backlight.pwm_funcs->get(connector, pipe));
1609 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
1610 	struct intel_panel *panel = &connector->panel;
1613 					   intel_backlight_invert_pwm_level(connector, level));
1618 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
1619 	struct intel_panel *panel = &connector->panel;
1622 					    intel_backlight_invert_pwm_level(connector, level));
1625 static int intel_pwm_setup_backlight(struct intel_connector *connector, enum pipe pipe)
1627 	struct intel_panel *panel = &connector->panel;
1630 	ret = panel->backlight.pwm_funcs->setup(connector, pipe);
1636 	panel->backlight.level = intel_pwm_get_backlight(connector, pipe);
1647 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
1648 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1649 	struct intel_panel *panel = &connector->panel;
1661 int intel_backlight_setup(struct intel_connector *connector, enum pipe pipe)
1663 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1664 	struct intel_panel *panel = &connector->panel;
1667 	if (!connector->panel.vbt.backlight.present) {
1671 				    connector->base.base.id, connector->base.name);
1675 				    connector->base.base.id, connector->base.name);
1686 	ret = panel->backlight.funcs->setup(connector, pipe);
1692 			    connector->base.base.id, connector->base.name);
1700 		    connector->base.base.id, connector->base.name,
1807 	struct intel_connector *connector =
1809 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1811 	if (connector->base.connector_type == DRM_MODE_CONNECTOR_DSI &&
1812 	    intel_dsi_dcs_init_backlight_funcs(connector) == 0)
1827 		if (connector->base.connector_type == DRM_MODE_CONNECTOR_DSI) {
1838 	if (connector->base.connector_type == DRM_MODE_CONNECTOR_eDP) {
1839 		if (intel_dp_aux_init_backlight_funcs(connector) == 0)
1843 			connector->panel.backlight.power = intel_pps_backlight_power;