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 intel_display *display = to_intel_display(connector);
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 intel_display *display = to_intel_display(connector);
130 	struct intel_panel *panel = &connector->panel;
144 static u32 lpt_get_backlight(struct intel_connector *connector, enum pipe unused)
146 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
151 static u32 pch_get_backlight(struct intel_connector *connector, enum pipe unused)
153 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
158 static u32 i9xx_get_backlight(struct intel_connector *connector, enum pipe unused)
160 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
161 	struct intel_panel *panel = &connector->panel;
178 static u32 vlv_get_backlight(struct intel_connector *connector, enum pipe pipe)
180 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
188 static u32 bxt_get_backlight(struct intel_connector *connector, enum pipe unused)
190 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
191 	struct intel_panel *panel = &connector->panel;
196 static u32 ext_pwm_get_backlight(struct intel_connector *connector, enum pipe unused)
198 	struct intel_panel *panel = &connector->panel;
207 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
208 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
217 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
218 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
227 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
228 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
229 	struct intel_panel *panel = &connector->panel;
255 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
256 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
266 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
267 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
268 	struct intel_panel *panel = &connector->panel;
275 	struct intel_panel *panel = &to_intel_connector(conn_state->connector)->panel;
284 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
285 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
286 	struct intel_panel *panel = &connector->panel;
289 		    connector->base.base.id, connector->base.name, level);
300 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
301 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
302 	struct intel_panel *panel = &connector->panel;
318 	hw_level = clamp_user_to_hw(connector, user_level, user_max);
323 			scale_hw_to_user(connector,
335 	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
336 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
352 			    connector->base.base.id, connector->base.name);
361 	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
362 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
378 	struct drm_i915_private *i915 = to_i915(old_conn_state->connector->dev);
387 	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
388 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
398 	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
399 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
400 	struct intel_panel *panel = &connector->panel;
413 	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
414 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
415 	struct intel_panel *panel = &connector->panel;
425 	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
426 	struct intel_panel *panel = &connector->panel;
436 	struct intel_connector *connector = to_intel_connector(old_conn_state->connector);
437 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
438 	struct intel_panel *panel = &connector->panel;
451 			    connector->base.base.id, connector->base.name);
468 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
469 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
470 	struct intel_panel *panel = &connector->panel;
476 			    connector->base.base.id, connector->base.name);
512 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
513 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
514 	struct intel_panel *panel = &connector->panel;
521 			    connector->base.base.id, connector->base.name);
529 			    connector->base.base.id, connector->base.name);
560 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
561 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
562 	struct intel_panel *panel = &connector->panel;
568 			    connector->base.base.id, connector->base.name);
600 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
601 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
602 	struct intel_panel *panel = &connector->panel;
609 			    connector->base.base.id, connector->base.name);
636 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
637 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
638 	struct intel_panel *panel = &connector->panel;
645 			    connector->base.base.id, connector->base.name);
667 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
668 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
669 	struct intel_panel *panel = &connector->panel;
678 				    connector->base.base.id, connector->base.name);
693 			    connector->base.base.id, connector->base.name);
717 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
718 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
719 	struct intel_panel *panel = &connector->panel;
748 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
749 	struct intel_panel *panel = &connector->panel;
759 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
760 	struct intel_panel *panel = &connector->panel;
768 				scale_hw_to_user(connector,
782 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
783 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
784 	struct intel_panel *panel = &connector->panel;
800 static u32 intel_panel_get_backlight(struct intel_connector *connector)
802 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
803 	struct intel_panel *panel = &connector->panel;
809 		val = panel->backlight.funcs->get(connector, intel_connector_get_pipe(connector));
818 static u32 scale_user_to_hw(struct intel_connector *connector,
821 	struct intel_panel *panel = &connector->panel;
831 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
832 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
833 	struct intel_panel *panel = &connector->panel;
843 	hw_level = scale_user_to_hw(connector, user_level, user_max);
854 	struct intel_connector *connector = bl_get_data(bd);
855 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
856 	struct intel_panel *panel = &connector->panel;
862 	intel_panel_set_backlight(connector->base.state, bd->props.brightness,
875 			panel->backlight.power(connector, enable);
888 	struct intel_connector *connector = bl_get_data(bd);
889 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
898 		hw_level = intel_panel_get_backlight(connector);
899 		ret = scale_hw_to_user(connector,
913 int intel_backlight_device_register(struct intel_connector *connector)
915 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
916 	struct intel_panel *panel = &connector->panel;
943 	props.brightness = scale_hw_to_user(connector,
960 		 * Using the same name independent of the drm device or connector
968 				 i915->drm.primary->index, connector->base.name);
972 	bd = backlight_device_register(name, connector->base.kdev, connector,
978 			connector->base.base.id, connector->base.name, name, PTR_ERR(bd));
987 		    connector->base.base.id, connector->base.name, name);
995 void intel_backlight_device_unregister(struct intel_connector *connector)
997 	struct intel_panel *panel = &connector->panel;
1010 static u32 cnp_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
1012 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1021 static u32 bxt_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
1031 static u32 spt_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
1033 	struct intel_panel *panel = &connector->panel;
1049 static u32 lpt_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
1051 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1052 	struct intel_panel *panel = &connector->panel;
1072 static u32 pch_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
1074 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1088 static u32 i9xx_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
1090 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1106 static u32 i965_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
1108 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1124 static u32 vlv_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
1126 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1143 static u16 get_vbt_pwm_freq(struct intel_connector *connector)
1145 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1146 	u16 pwm_freq_hz = connector->panel.vbt.backlight.pwm_freq_hz;
1162 static u32 get_backlight_max_vbt(struct intel_connector *connector)
1164 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1165 	struct intel_panel *panel = &connector->panel;
1166 	u16 pwm_freq_hz = get_vbt_pwm_freq(connector);
1175 	pwm = panel->backlight.pwm_funcs->hz_to_pwm(connector, pwm_freq_hz);
1188 static u32 get_backlight_min_vbt(struct intel_connector *connector)
1190 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1191 	struct intel_panel *panel = &connector->panel;
1203 	min = clamp_t(int, connector->panel.vbt.backlight.min_brightness, 0, 64);
1204 	if (min != connector->panel.vbt.backlight.min_brightness) {
1207 			    connector->panel.vbt.backlight.min_brightness, min);
1214 static int lpt_setup_backlight(struct intel_connector *connector, enum pipe unused)
1216 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1217 	struct intel_panel *panel = &connector->panel;
1236 		panel->backlight.pwm_level_max = get_backlight_max_vbt(connector);
1241 	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
1250 		val = pch_get_backlight(connector, unused);
1256 		lpt_set_backlight(connector->base.state, val);
1266 		    connector->base.base.id, connector->base.name);
1271 static int pch_setup_backlight(struct intel_connector *connector, enum pipe unused)
1273 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1274 	struct intel_panel *panel = &connector->panel;
1284 		panel->backlight.pwm_level_max = get_backlight_max_vbt(connector);
1289 	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
1297 		    connector->base.base.id, connector->base.name);
1302 static int i9xx_setup_backlight(struct intel_connector *connector, enum pipe unused)
1304 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1305 	struct intel_panel *panel = &connector->panel;
1319 		panel->backlight.pwm_level_max = get_backlight_max_vbt(connector);
1329 	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
1331 	val = i9xx_get_backlight(connector, unused);
1332 	val = intel_backlight_invert_pwm_level(connector, val);
1339 		    connector->base.base.id, connector->base.name);
1344 static int i965_setup_backlight(struct intel_connector *connector, enum pipe unused)
1346 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1347 	struct intel_panel *panel = &connector->panel;
1358 		panel->backlight.pwm_level_max = get_backlight_max_vbt(connector);
1366 	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
1372 		    connector->base.base.id, connector->base.name);
1377 static int vlv_setup_backlight(struct intel_connector *connector, enum pipe pipe)
1379 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1380 	struct intel_panel *panel = &connector->panel;
1393 		panel->backlight.pwm_level_max = get_backlight_max_vbt(connector);
1398 	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
1404 		    connector->base.base.id, connector->base.name, pipe_name(pipe));
1410 bxt_setup_backlight(struct intel_connector *connector, enum pipe unused)
1412 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1413 	struct intel_panel *panel = &connector->panel;
1416 	panel->backlight.controller = connector->panel.vbt.backlight.controller;
1433 		panel->backlight.pwm_level_max = get_backlight_max_vbt(connector);
1438 	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
1444 		    connector->base.base.id, connector->base.name,
1475 cnp_setup_backlight(struct intel_connector *connector, enum pipe unused)
1477 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1478 	struct intel_panel *panel = &connector->panel;
1485 	panel->backlight.controller = connector->panel.vbt.backlight.controller;
1488 			    connector->base.base.id, connector->base.name,
1501 		panel->backlight.pwm_level_max = get_backlight_max_vbt(connector);
1506 	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
1512 		    connector->base.base.id, connector->base.name,
1518 static int ext_pwm_setup_backlight(struct intel_connector *connector,
1521 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1522 	struct intel_panel *panel = &connector->panel;
1527 	if (connector->panel.vbt.dsi.config->pwm_blc == PPS_BLC_PMIC) {
1537 			connector->base.base.id, connector->base.name, desc);
1543 	panel->backlight.pwm_level_min = get_backlight_min_vbt(connector);
1551 		level = intel_backlight_invert_pwm_level(connector, level);
1555 			    connector->base.base.id, connector->base.name,
1557 			    get_vbt_pwm_freq(connector), level);
1561 			NSEC_PER_SEC / get_vbt_pwm_freq(connector);
1566 		    connector->base.base.id, connector->base.name, desc);
1573 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
1574 	struct intel_panel *panel = &connector->panel;
1577 					intel_backlight_invert_pwm_level(connector, level));
1580 static u32 intel_pwm_get_backlight(struct intel_connector *connector, enum pipe pipe)
1582 	struct intel_panel *panel = &connector->panel;
1584 	return intel_backlight_invert_pwm_level(connector,
1585 					    panel->backlight.pwm_funcs->get(connector, pipe));
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));
1600 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
1601 	struct intel_panel *panel = &connector->panel;
1604 					    intel_backlight_invert_pwm_level(connector, level));
1607 static int intel_pwm_setup_backlight(struct intel_connector *connector, enum pipe pipe)
1609 	struct intel_panel *panel = &connector->panel;
1612 	ret = panel->backlight.pwm_funcs->setup(connector, pipe);
1618 	panel->backlight.level = intel_pwm_get_backlight(connector, pipe);
1629 	struct intel_connector *connector = to_intel_connector(conn_state->connector);
1630 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1631 	struct intel_panel *panel = &connector->panel;
1643 int intel_backlight_setup(struct intel_connector *connector, enum pipe pipe)
1645 	struct intel_display *display = to_intel_display(connector);
1646 	struct intel_panel *panel = &connector->panel;
1649 	if (!connector->panel.vbt.backlight.present) {
1653 				    connector->base.base.id, connector->base.name);
1657 				    connector->base.base.id, connector->base.name);
1668 	ret = panel->backlight.funcs->setup(connector, pipe);
1674 			    connector->base.base.id, connector->base.name);
1682 		    connector->base.base.id, connector->base.name,
1789 	struct intel_connector *connector =
1791 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
1793 	if (connector->base.connector_type == DRM_MODE_CONNECTOR_DSI &&
1794 	    intel_dsi_dcs_init_backlight_funcs(connector) == 0)
1809 		if (connector->base.connector_type == DRM_MODE_CONNECTOR_DSI) {
1820 	if (connector->base.connector_type == DRM_MODE_CONNECTOR_eDP) {
1821 		if (intel_dp_aux_init_backlight_funcs(connector) == 0)
1825 			connector->panel.backlight.power = intel_pps_backlight_power;