Lines Matching full:backlight
6 #include <linux/backlight.h>
70 hw_level = scale(user_level, 0, user_max, 0, panel->backlight.max); in clamp_user_to_hw()
71 hw_level = clamp(hw_level, panel->backlight.min, panel->backlight.max); in clamp_user_to_hw()
82 return scale(hw_level, panel->backlight.min, panel->backlight.max, in scale_hw_to_user()
91 drm_WARN_ON(display->drm, panel->backlight.pwm_level_max == 0); in intel_backlight_invert_pwm_level()
98 return panel->backlight.pwm_level_max - val + panel->backlight.pwm_level_min; in intel_backlight_invert_pwm_level()
110 drm_dbg_kms(display->drm, "[CONNECTOR:%d:%s] set backlight PWM = %d\n", in intel_backlight_set_pwm_level()
112 panel->backlight.pwm_funcs->set(conn_state, val); in intel_backlight_set_pwm_level()
121 panel->backlight.max == 0 || panel->backlight.pwm_level_max == 0); in intel_backlight_level_to_pwm()
123 val = scale(val, panel->backlight.min, panel->backlight.max, in intel_backlight_level_to_pwm()
124 panel->backlight.pwm_level_min, panel->backlight.pwm_level_max); in intel_backlight_level_to_pwm()
135 panel->backlight.max == 0 || panel->backlight.pwm_level_max == 0); in intel_backlight_level_from_pwm()
140 val = panel->backlight.pwm_level_max - (val - panel->backlight.pwm_level_min); in intel_backlight_level_from_pwm()
142 return scale(val, panel->backlight.pwm_level_min, panel->backlight.pwm_level_max, in intel_backlight_level_from_pwm()
143 panel->backlight.min, panel->backlight.max); in intel_backlight_level_from_pwm()
170 if (panel->backlight.combination_mode) { in i9xx_get_backlight()
196 return intel_de_read(display, BXT_BLC_PWM_DUTY(panel->backlight.controller)); in bxt_get_backlight()
204 pwm_get_state(panel->backlight.pwm, &state); in ext_pwm_get_backlight()
235 drm_WARN_ON(display->drm, panel->backlight.pwm_level_max == 0); in i9xx_set_backlight()
237 if (panel->backlight.combination_mode) { in i9xx_set_backlight()
241 lbpc = level * 0xfe / panel->backlight.pwm_level_max + 1; in i9xx_set_backlight()
274 intel_de_write(display, BXT_BLC_PWM_DUTY(panel->backlight.controller), level); in bxt_set_backlight()
281 pwm_set_relative_duty_cycle(&panel->backlight.pwm_state, level, 100); in ext_pwm_set_backlight()
282 pwm_apply_might_sleep(panel->backlight.pwm, &panel->backlight.pwm_state); in ext_pwm_set_backlight()
292 drm_dbg_kms(display->drm, "[CONNECTOR:%d:%s] set backlight level = %d\n", in intel_panel_actually_set_backlight()
295 panel->backlight.funcs->set(conn_state, level); in intel_panel_actually_set_backlight()
298 /* set backlight brightness to level in range [0..max], assuming hw min is
311 * connection_mutex isn't held across the entire backlight in intel_backlight_set_acpi()
315 if (!panel->backlight.present || !conn_state->crtc) in intel_backlight_set_acpi()
318 mutex_lock(&display->backlight.lock); in intel_backlight_set_acpi()
320 drm_WARN_ON(display->drm, panel->backlight.max == 0); in intel_backlight_set_acpi()
323 panel->backlight.level = hw_level; in intel_backlight_set_acpi()
325 if (panel->backlight.device) in intel_backlight_set_acpi()
326 panel->backlight.device->props.brightness = in intel_backlight_set_acpi()
328 panel->backlight.level, in intel_backlight_set_acpi()
329 panel->backlight.device->props.max_brightness); in intel_backlight_set_acpi()
331 if (panel->backlight.enabled) in intel_backlight_set_acpi()
334 mutex_unlock(&display->backlight.lock); in intel_backlight_set_acpi()
355 drm_dbg_kms(display->drm, "[CONNECTOR:%d:%s] CPU backlight was enabled, disabling\n", in lpt_disable_backlight()
409 intel_de_rmw(display, BXT_BLC_PWM_CTL(panel->backlight.controller), in bxt_disable_backlight()
412 if (panel->backlight.controller == 1) in bxt_disable_backlight()
424 intel_de_rmw(display, BXT_BLC_PWM_CTL(panel->backlight.controller), in cnp_disable_backlight()
435 panel->backlight.pwm_state.enabled = false; in ext_pwm_disable_backlight()
436 pwm_apply_might_sleep(panel->backlight.pwm, &panel->backlight.pwm_state); in ext_pwm_disable_backlight()
445 if (!panel->backlight.present) in intel_backlight_disable()
449 * Do not disable backlight on the vga_switcheroo path. When switching in intel_backlight_disable()
451 * backlight. This will leave the backlight on unnecessarily when in intel_backlight_disable()
455 drm_dbg_kms(display->drm, "[CONNECTOR:%d:%s] Skipping backlight disable on vga switch\n", in intel_backlight_disable()
460 mutex_lock(&display->backlight.lock); in intel_backlight_disable()
462 if (panel->backlight.device) in intel_backlight_disable()
463 panel->backlight.device->props.power = BACKLIGHT_POWER_OFF; in intel_backlight_disable()
464 panel->backlight.enabled = false; in intel_backlight_disable()
465 panel->backlight.funcs->disable(old_conn_state, 0); in intel_backlight_disable()
467 mutex_unlock(&display->backlight.lock); in intel_backlight_disable()
482 "[CONNECTOR:%d:%s] PCH backlight already enabled\n", in lpt_enable_backlight()
490 panel->backlight.alternate_pwm_increment ? in lpt_enable_backlight()
494 panel->backlight.alternate_pwm_increment ? in lpt_enable_backlight()
497 pch_ctl2 = panel->backlight.pwm_level_max << 16; in lpt_enable_backlight()
501 if (panel->backlight.active_low_pwm) in lpt_enable_backlight()
528 "[CONNECTOR:%d:%s] CPU backlight already enabled\n", in pch_enable_backlight()
537 "[CONNECTOR:%d:%s] PCH backlight already enabled\n", in pch_enable_backlight()
554 pch_ctl2 = panel->backlight.pwm_level_max << 16; in pch_enable_backlight()
558 if (panel->backlight.active_low_pwm) in pch_enable_backlight()
577 "[CONNECTOR:%d:%s] backlight already enabled\n", in i9xx_enable_backlight()
582 freq = panel->backlight.pwm_level_max; in i9xx_enable_backlight()
583 if (panel->backlight.combination_mode) in i9xx_enable_backlight()
587 if (panel->backlight.combination_mode) in i9xx_enable_backlight()
589 if (display->platform.pineview && panel->backlight.active_low_pwm) in i9xx_enable_backlight()
599 * Needed to enable backlight on some 855gm models. BLC_HIST_CTL is in i9xx_enable_backlight()
601 * that has backlight. in i9xx_enable_backlight()
619 "[CONNECTOR:%d:%s] backlight already enabled\n", in i965_enable_backlight()
625 freq = panel->backlight.pwm_level_max; in i965_enable_backlight()
626 if (panel->backlight.combination_mode) in i965_enable_backlight()
633 if (panel->backlight.combination_mode) in i965_enable_backlight()
635 if (panel->backlight.active_low_pwm) in i965_enable_backlight()
656 "[CONNECTOR:%d:%s] backlight already enabled\n", in vlv_enable_backlight()
662 ctl = panel->backlight.pwm_level_max << 16; in vlv_enable_backlight()
669 if (panel->backlight.active_low_pwm) in vlv_enable_backlight()
686 if (panel->backlight.controller == 1) { in bxt_enable_backlight()
697 if (panel->backlight.util_pin_active_low) in bxt_enable_backlight()
703 pwm_ctl = intel_de_read(display, BXT_BLC_PWM_CTL(panel->backlight.controller)); in bxt_enable_backlight()
706 "[CONNECTOR:%d:%s] backlight already enabled\n", in bxt_enable_backlight()
709 intel_de_write(display, BXT_BLC_PWM_CTL(panel->backlight.controller), in bxt_enable_backlight()
713 intel_de_write(display, BXT_BLC_PWM_FREQ(panel->backlight.controller), in bxt_enable_backlight()
714 panel->backlight.pwm_level_max); in bxt_enable_backlight()
719 if (panel->backlight.active_low_pwm) in bxt_enable_backlight()
722 intel_de_write(display, BXT_BLC_PWM_CTL(panel->backlight.controller), pwm_ctl); in bxt_enable_backlight()
723 intel_de_posting_read(display, BXT_BLC_PWM_CTL(panel->backlight.controller)); in bxt_enable_backlight()
724 intel_de_write(display, BXT_BLC_PWM_CTL(panel->backlight.controller), in bxt_enable_backlight()
736 pwm_ctl = intel_de_read(display, BXT_BLC_PWM_CTL(panel->backlight.controller)); in cnp_enable_backlight()
738 drm_dbg_kms(display->drm, "backlight already enabled\n"); in cnp_enable_backlight()
740 intel_de_write(display, BXT_BLC_PWM_CTL(panel->backlight.controller), in cnp_enable_backlight()
744 intel_de_write(display, BXT_BLC_PWM_FREQ(panel->backlight.controller), in cnp_enable_backlight()
745 panel->backlight.pwm_level_max); in cnp_enable_backlight()
750 if (panel->backlight.active_low_pwm) in cnp_enable_backlight()
753 intel_de_write(display, BXT_BLC_PWM_CTL(panel->backlight.controller), pwm_ctl); in cnp_enable_backlight()
754 intel_de_posting_read(display, BXT_BLC_PWM_CTL(panel->backlight.controller)); in cnp_enable_backlight()
755 intel_de_write(display, BXT_BLC_PWM_CTL(panel->backlight.controller), in cnp_enable_backlight()
765 pwm_set_relative_duty_cycle(&panel->backlight.pwm_state, level, 100); in ext_pwm_enable_backlight()
766 panel->backlight.pwm_state.enabled = true; in ext_pwm_enable_backlight()
767 pwm_apply_might_sleep(panel->backlight.pwm, &panel->backlight.pwm_state); in ext_pwm_enable_backlight()
776 WARN_ON(panel->backlight.max == 0); in __intel_backlight_enable()
778 if (panel->backlight.level < panel->backlight.min) { in __intel_backlight_enable()
779 panel->backlight.level = panel->backlight.min; in __intel_backlight_enable()
780 if (panel->backlight.device) in __intel_backlight_enable()
781 panel->backlight.device->props.brightness = in __intel_backlight_enable()
783 panel->backlight.level, in __intel_backlight_enable()
784 panel->backlight.device->props.max_brightness); in __intel_backlight_enable()
787 panel->backlight.funcs->enable(crtc_state, conn_state, panel->backlight.level); in __intel_backlight_enable()
788 panel->backlight.enabled = true; in __intel_backlight_enable()
789 if (panel->backlight.device) in __intel_backlight_enable()
790 panel->backlight.device->props.power = BACKLIGHT_POWER_ON; in __intel_backlight_enable()
801 if (!panel->backlight.present) in intel_backlight_enable()
806 mutex_lock(&display->backlight.lock); in intel_backlight_enable()
810 mutex_unlock(&display->backlight.lock); in intel_backlight_enable()
820 mutex_lock(&display->backlight.lock); in intel_panel_get_backlight()
822 if (panel->backlight.enabled) in intel_panel_get_backlight()
823 val = panel->backlight.funcs->get(connector, intel_connector_get_pipe(connector)); in intel_panel_get_backlight()
825 mutex_unlock(&display->backlight.lock); in intel_panel_get_backlight()
827 drm_dbg_kms(display->drm, "get backlight PWM = %d\n", val); in intel_panel_get_backlight()
838 panel->backlight.min, panel->backlight.max); in scale_user_to_hw()
841 /* set backlight brightness to level in range [0..max], scaling wrt hw min */
850 if (!panel->backlight.present) in intel_panel_set_backlight()
853 mutex_lock(&display->backlight.lock); in intel_panel_set_backlight()
855 drm_WARN_ON(display->drm, panel->backlight.max == 0); in intel_panel_set_backlight()
858 panel->backlight.level = hw_level; in intel_panel_set_backlight()
860 if (panel->backlight.enabled) in intel_panel_set_backlight()
863 mutex_unlock(&display->backlight.lock); in intel_panel_set_backlight()
881 * backlight class device does not make it easy to differentiate in intel_backlight_device_update_status()
885 if (panel->backlight.enabled) { in intel_backlight_device_update_status()
886 if (panel->backlight.power) { in intel_backlight_device_update_status()
889 panel->backlight.power(connector, enable); in intel_backlight_device_update_status()
937 if (WARN_ON(panel->backlight.device)) in intel_backlight_device_register()
940 if (!panel->backlight.present) in intel_backlight_device_register()
943 WARN_ON(panel->backlight.max == 0); in intel_backlight_device_register()
955 * Note: Everything should work even if the backlight device max in intel_backlight_device_register()
958 props.max_brightness = panel->backlight.max; in intel_backlight_device_register()
960 panel->backlight.level, in intel_backlight_device_register()
963 if (panel->backlight.enabled) in intel_backlight_device_register()
977 * prevents registration of multiple backlight devices in the in intel_backlight_device_register()
979 * compatibility. Use unique names for subsequent backlight devices as a in intel_backlight_device_register()
983 name = kasprintf(GFP_KERNEL, "card%d-%s-backlight", in intel_backlight_device_register()
994 "[CONNECTOR:%d:%s] backlight device %s register failed: %ld\n", in intel_backlight_device_register()
1000 panel->backlight.device = bd; in intel_backlight_device_register()
1003 "[CONNECTOR:%d:%s] backlight device %s registered\n", in intel_backlight_device_register()
1016 if (panel->backlight.device) { in intel_backlight_device_unregister()
1017 backlight_device_unregister(panel->backlight.device); in intel_backlight_device_unregister()
1018 panel->backlight.device = NULL; in intel_backlight_device_unregister()
1053 if (panel->backlight.alternate_pwm_increment) in spt_hz_to_pwm()
1072 if (panel->backlight.alternate_pwm_increment) in lpt_hz_to_pwm()
1099 * clock frequency/32) in total for a complete cycle of modulated backlight
1163 u16 pwm_freq_hz = connector->panel.vbt.backlight.pwm_freq_hz; in get_vbt_pwm_freq()
1167 "VBT defined backlight frequency %u Hz\n", in get_vbt_pwm_freq()
1172 "default backlight frequency %u Hz\n", in get_vbt_pwm_freq()
1186 if (!panel->backlight.pwm_funcs->hz_to_pwm) { in get_backlight_max_vbt()
1188 "backlight frequency conversion not supported\n"); in get_backlight_max_vbt()
1192 pwm = panel->backlight.pwm_funcs->hz_to_pwm(connector, pwm_freq_hz); in get_backlight_max_vbt()
1195 "backlight frequency conversion failed\n"); in get_backlight_max_vbt()
1211 drm_WARN_ON(display->drm, panel->backlight.pwm_level_max == 0); in get_backlight_min_vbt()
1220 min = clamp_t(int, connector->panel.vbt.backlight.min_brightness, 0, 64); in get_backlight_min_vbt()
1221 if (min != connector->panel.vbt.backlight.min_brightness) { in get_backlight_min_vbt()
1223 "clamping VBT min backlight %d/255 to %d/255\n", in get_backlight_min_vbt()
1224 connector->panel.vbt.backlight.min_brightness, min); in get_backlight_min_vbt()
1228 return scale(min, 0, 255, 0, panel->backlight.pwm_level_max); in get_backlight_min_vbt()
1243 panel->backlight.alternate_pwm_increment = alt; in lpt_setup_backlight()
1246 panel->backlight.active_low_pwm = pch_ctl1 & BLM_PCH_POLARITY; in lpt_setup_backlight()
1249 panel->backlight.pwm_level_max = pch_ctl2 >> 16; in lpt_setup_backlight()
1253 if (!panel->backlight.pwm_level_max) in lpt_setup_backlight()
1254 panel->backlight.pwm_level_max = get_backlight_max_vbt(connector); in lpt_setup_backlight()
1256 if (!panel->backlight.pwm_level_max) in lpt_setup_backlight()
1259 panel->backlight.pwm_level_min = get_backlight_min_vbt(connector); in lpt_setup_backlight()
1261 panel->backlight.pwm_enabled = pch_ctl1 & BLM_PCH_PWM_ENABLE; in lpt_setup_backlight()
1263 cpu_mode = panel->backlight.pwm_enabled && HAS_PCH_LPT(i915) && in lpt_setup_backlight()
1271 "CPU backlight register was enabled, switching to PCH override\n"); in lpt_setup_backlight()
1283 "[CONNECTOR:%d:%s] Using native PCH PWM for backlight control\n", in lpt_setup_backlight()
1296 panel->backlight.active_low_pwm = pch_ctl1 & BLM_PCH_POLARITY; in pch_setup_backlight()
1299 panel->backlight.pwm_level_max = pch_ctl2 >> 16; in pch_setup_backlight()
1301 if (!panel->backlight.pwm_level_max) in pch_setup_backlight()
1302 panel->backlight.pwm_level_max = get_backlight_max_vbt(connector); in pch_setup_backlight()
1304 if (!panel->backlight.pwm_level_max) in pch_setup_backlight()
1307 panel->backlight.pwm_level_min = get_backlight_min_vbt(connector); in pch_setup_backlight()
1310 panel->backlight.pwm_enabled = (cpu_ctl2 & BLM_PWM_ENABLE) && in pch_setup_backlight()
1314 "[CONNECTOR:%d:%s] Using native PCH PWM for backlight control\n", in pch_setup_backlight()
1329 panel->backlight.combination_mode = ctl & BLM_LEGACY_MODE; in i9xx_setup_backlight()
1332 panel->backlight.active_low_pwm = ctl & BLM_POLARITY_PNV; in i9xx_setup_backlight()
1334 panel->backlight.pwm_level_max = ctl >> 17; in i9xx_setup_backlight()
1336 if (!panel->backlight.pwm_level_max) { in i9xx_setup_backlight()
1337 panel->backlight.pwm_level_max = get_backlight_max_vbt(connector); in i9xx_setup_backlight()
1338 panel->backlight.pwm_level_max >>= 1; in i9xx_setup_backlight()
1341 if (!panel->backlight.pwm_level_max) in i9xx_setup_backlight()
1344 if (panel->backlight.combination_mode) in i9xx_setup_backlight()
1345 panel->backlight.pwm_level_max *= 0xff; in i9xx_setup_backlight()
1347 panel->backlight.pwm_level_min = get_backlight_min_vbt(connector); in i9xx_setup_backlight()
1351 val = clamp(val, panel->backlight.pwm_level_min, panel->backlight.pwm_level_max); in i9xx_setup_backlight()
1353 panel->backlight.pwm_enabled = val != 0; in i9xx_setup_backlight()
1356 "[CONNECTOR:%d:%s] Using native PWM for backlight control\n", in i9xx_setup_backlight()
1369 panel->backlight.combination_mode = ctl2 & BLM_COMBINATION_MODE; in i965_setup_backlight()
1370 panel->backlight.active_low_pwm = ctl2 & BLM_POLARITY_I965; in i965_setup_backlight()
1373 panel->backlight.pwm_level_max = ctl >> 16; in i965_setup_backlight()
1375 if (!panel->backlight.pwm_level_max) in i965_setup_backlight()
1376 panel->backlight.pwm_level_max = get_backlight_max_vbt(connector); in i965_setup_backlight()
1378 if (!panel->backlight.pwm_level_max) in i965_setup_backlight()
1381 if (panel->backlight.combination_mode) in i965_setup_backlight()
1382 panel->backlight.pwm_level_max *= 0xff; in i965_setup_backlight()
1384 panel->backlight.pwm_level_min = get_backlight_min_vbt(connector); in i965_setup_backlight()
1386 panel->backlight.pwm_enabled = ctl2 & BLM_PWM_ENABLE; in i965_setup_backlight()
1389 "[CONNECTOR:%d:%s] Using native PWM for backlight control\n", in i965_setup_backlight()
1405 panel->backlight.active_low_pwm = ctl2 & BLM_POLARITY_I965; in vlv_setup_backlight()
1408 panel->backlight.pwm_level_max = ctl >> 16; in vlv_setup_backlight()
1410 if (!panel->backlight.pwm_level_max) in vlv_setup_backlight()
1411 panel->backlight.pwm_level_max = get_backlight_max_vbt(connector); in vlv_setup_backlight()
1413 if (!panel->backlight.pwm_level_max) in vlv_setup_backlight()
1416 panel->backlight.pwm_level_min = get_backlight_min_vbt(connector); in vlv_setup_backlight()
1418 panel->backlight.pwm_enabled = ctl2 & BLM_PWM_ENABLE; in vlv_setup_backlight()
1421 "[CONNECTOR:%d:%s] Using native PWM for backlight control (on pipe %c)\n", in vlv_setup_backlight()
1434 panel->backlight.controller = connector->panel.vbt.backlight.controller; in bxt_setup_backlight()
1437 BXT_BLC_PWM_CTL(panel->backlight.controller)); in bxt_setup_backlight()
1440 if (panel->backlight.controller == 1) { in bxt_setup_backlight()
1442 panel->backlight.util_pin_active_low = in bxt_setup_backlight()
1446 panel->backlight.active_low_pwm = pwm_ctl & BXT_BLC_PWM_POLARITY; in bxt_setup_backlight()
1447 panel->backlight.pwm_level_max = in bxt_setup_backlight()
1448 intel_de_read(display, BXT_BLC_PWM_FREQ(panel->backlight.controller)); in bxt_setup_backlight()
1450 if (!panel->backlight.pwm_level_max) in bxt_setup_backlight()
1451 panel->backlight.pwm_level_max = get_backlight_max_vbt(connector); in bxt_setup_backlight()
1453 if (!panel->backlight.pwm_level_max) in bxt_setup_backlight()
1456 panel->backlight.pwm_level_min = get_backlight_min_vbt(connector); in bxt_setup_backlight()
1458 panel->backlight.pwm_enabled = pwm_ctl & BXT_BLC_PWM_ENABLE; in bxt_setup_backlight()
1461 "[CONNECTOR:%d:%s] Using native PWM for backlight control (controller=%d)\n", in bxt_setup_backlight()
1463 panel->backlight.controller); in bxt_setup_backlight()
1507 * CNP has the BXT implementation of backlight, but with only one in cnp_setup_backlight()
1510 panel->backlight.controller = connector->panel.vbt.backlight.controller; in cnp_setup_backlight()
1511 if (!cnp_backlight_controller_is_valid(display, panel->backlight.controller)) { in cnp_setup_backlight()
1513 "[CONNECTOR:%d:%s] Invalid backlight controller %d, assuming 0\n", in cnp_setup_backlight()
1515 panel->backlight.controller); in cnp_setup_backlight()
1516 panel->backlight.controller = 0; in cnp_setup_backlight()
1520 BXT_BLC_PWM_CTL(panel->backlight.controller)); in cnp_setup_backlight()
1522 panel->backlight.active_low_pwm = pwm_ctl & BXT_BLC_PWM_POLARITY; in cnp_setup_backlight()
1523 panel->backlight.pwm_level_max = in cnp_setup_backlight()
1524 intel_de_read(display, BXT_BLC_PWM_FREQ(panel->backlight.controller)); in cnp_setup_backlight()
1526 if (!panel->backlight.pwm_level_max) in cnp_setup_backlight()
1527 panel->backlight.pwm_level_max = get_backlight_max_vbt(connector); in cnp_setup_backlight()
1529 if (!panel->backlight.pwm_level_max) in cnp_setup_backlight()
1532 panel->backlight.pwm_level_min = get_backlight_min_vbt(connector); in cnp_setup_backlight()
1534 panel->backlight.pwm_enabled = pwm_ctl & BXT_BLC_PWM_ENABLE; in cnp_setup_backlight()
1537 "[CONNECTOR:%d:%s] Using native PCH PWM for backlight control (controller=%d)\n", in cnp_setup_backlight()
1539 panel->backlight.controller); in cnp_setup_backlight()
1552 /* Get the right PWM chip for DSI backlight according to VBT */ in ext_pwm_setup_backlight()
1554 panel->backlight.pwm = pwm_get(display->drm->dev, in ext_pwm_setup_backlight()
1558 panel->backlight.pwm = pwm_get(display->drm->dev, in ext_pwm_setup_backlight()
1563 if (IS_ERR(panel->backlight.pwm)) { in ext_pwm_setup_backlight()
1567 panel->backlight.pwm = NULL; in ext_pwm_setup_backlight()
1571 panel->backlight.pwm_level_max = 100; /* 100% */ in ext_pwm_setup_backlight()
1572 panel->backlight.pwm_level_min = get_backlight_min_vbt(connector); in ext_pwm_setup_backlight()
1574 if (pwm_is_enabled(panel->backlight.pwm)) { in ext_pwm_setup_backlight()
1576 pwm_get_state(panel->backlight.pwm, &panel->backlight.pwm_state); in ext_pwm_setup_backlight()
1578 level = pwm_get_relative_duty_cycle(&panel->backlight.pwm_state, in ext_pwm_setup_backlight()
1581 panel->backlight.pwm_enabled = true; in ext_pwm_setup_backlight()
1586 NSEC_PER_SEC / (unsigned long)panel->backlight.pwm_state.period, in ext_pwm_setup_backlight()
1590 panel->backlight.pwm_state.period = in ext_pwm_setup_backlight()
1595 "[CONNECTOR:%d:%s] Using %s PWM for backlight control\n", in ext_pwm_setup_backlight()
1606 panel->backlight.pwm_funcs->set(conn_state, in intel_pwm_set_backlight()
1615 panel->backlight.pwm_funcs->get(connector, pipe)); in intel_pwm_get_backlight()
1624 panel->backlight.pwm_funcs->enable(crtc_state, conn_state, in intel_pwm_enable_backlight()
1633 panel->backlight.pwm_funcs->disable(conn_state, in intel_pwm_disable_backlight()
1642 ret = panel->backlight.pwm_funcs->setup(connector, pipe); in intel_pwm_setup_backlight()
1646 panel->backlight.min = panel->backlight.pwm_level_min; in intel_pwm_setup_backlight()
1647 panel->backlight.max = panel->backlight.pwm_level_max; in intel_pwm_setup_backlight()
1648 panel->backlight.level = intel_pwm_get_backlight(connector, pipe); in intel_pwm_setup_backlight()
1649 panel->backlight.enabled = panel->backlight.pwm_enabled; in intel_pwm_setup_backlight()
1663 if (!panel->backlight.present) in intel_backlight_update()
1666 mutex_lock(&display->backlight.lock); in intel_backlight_update()
1667 if (!panel->backlight.enabled) in intel_backlight_update()
1670 mutex_unlock(&display->backlight.lock); in intel_backlight_update()
1679 if (!connector->panel.vbt.backlight.present) { in intel_backlight_setup()
1682 "[CONNECTOR:%d:%s] no backlight present per VBT, but present per quirk\n", in intel_backlight_setup()
1686 "[CONNECTOR:%d:%s] no backlight present per VBT\n", in intel_backlight_setup()
1693 if (drm_WARN_ON(display->drm, !panel->backlight.funcs)) in intel_backlight_setup()
1697 mutex_lock(&display->backlight.lock); in intel_backlight_setup()
1698 ret = panel->backlight.funcs->setup(connector, pipe); in intel_backlight_setup()
1699 mutex_unlock(&display->backlight.lock); in intel_backlight_setup()
1703 "[CONNECTOR:%d:%s] failed to setup backlight\n", in intel_backlight_setup()
1708 panel->backlight.present = true; in intel_backlight_setup()
1711 "[CONNECTOR:%d:%s] backlight initialized, %s, brightness %u/%u\n", in intel_backlight_setup()
1713 str_enabled_disabled(panel->backlight.enabled), in intel_backlight_setup()
1714 panel->backlight.level, panel->backlight.max); in intel_backlight_setup()
1722 if (panel->backlight.pwm) in intel_backlight_destroy()
1723 pwm_put(panel->backlight.pwm); in intel_backlight_destroy()
1725 panel->backlight.present = false; in intel_backlight_destroy()
1816 /* Set up chip specific backlight functions */
1829 panel->backlight.pwm_funcs = &bxt_pwm_funcs; in intel_backlight_init_funcs()
1831 panel->backlight.pwm_funcs = &cnp_pwm_funcs; in intel_backlight_init_funcs()
1834 panel->backlight.pwm_funcs = &lpt_pwm_funcs; in intel_backlight_init_funcs()
1836 panel->backlight.pwm_funcs = &spt_pwm_funcs; in intel_backlight_init_funcs()
1838 panel->backlight.pwm_funcs = &pch_pwm_funcs; in intel_backlight_init_funcs()
1841 panel->backlight.pwm_funcs = &ext_pwm_funcs; in intel_backlight_init_funcs()
1843 panel->backlight.pwm_funcs = &vlv_pwm_funcs; in intel_backlight_init_funcs()
1846 panel->backlight.pwm_funcs = &i965_pwm_funcs; in intel_backlight_init_funcs()
1848 panel->backlight.pwm_funcs = &i9xx_pwm_funcs; in intel_backlight_init_funcs()
1856 connector->panel.backlight.power = intel_pps_backlight_power; in intel_backlight_init_funcs()
1859 /* We're using a standard PWM backlight interface */ in intel_backlight_init_funcs()
1860 panel->backlight.funcs = &pwm_bl_funcs; in intel_backlight_init_funcs()