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-rw-r--r--drivers/gpu/drm/Kconfig14
-rw-r--r--drivers/gpu/drm/amd/amdgpu/atombios_encoders.c14
-rw-r--r--drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c9
-rw-r--r--drivers/gpu/drm/gma500/Kconfig2
-rw-r--r--drivers/gpu/drm/i915/Kconfig2
-rw-r--r--drivers/gpu/drm/i915/display/intel_acpi.c27
-rw-r--r--drivers/gpu/drm/i915/display/intel_acpi.h3
-rw-r--r--drivers/gpu/drm/i915/display/intel_backlight.c7
-rw-r--r--drivers/gpu/drm/i915/display/intel_display.c2
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_acpi.c10
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_acpi.h4
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_backlight.c13
-rw-r--r--drivers/gpu/drm/radeon/atombios_encoders.c7
-rw-r--r--drivers/gpu/drm/radeon/radeon_encoders.c11
-rw-r--r--drivers/gpu/drm/radeon/radeon_legacy_encoders.c7
15 files changed, 129 insertions, 3 deletions
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 6c2256e8474b..8cafe63c98fc 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -248,6 +248,13 @@ config DRM_RADEON
select HWMON
select BACKLIGHT_CLASS_DEVICE
select INTERVAL_TREE
+ # radeon depends on ACPI_VIDEO when ACPI is enabled, for select to work
+ # ACPI_VIDEO's dependencies must also be selected.
+ select INPUT if ACPI
+ select ACPI_VIDEO if ACPI
+ # On x86 ACPI_VIDEO also needs ACPI_WMI
+ select X86_PLATFORM_DEVICES if ACPI && X86
+ select ACPI_WMI if ACPI && X86
help
Choose this option if you have an ATI Radeon graphics card. There
are both PCI and AGP versions. You don't need to choose this to
@@ -273,6 +280,13 @@ config DRM_AMDGPU
select BACKLIGHT_CLASS_DEVICE
select INTERVAL_TREE
select DRM_BUDDY
+ # amdgpu depends on ACPI_VIDEO when ACPI is enabled, for select to work
+ # ACPI_VIDEO's dependencies must also be selected.
+ select INPUT if ACPI
+ select ACPI_VIDEO if ACPI
+ # On x86 ACPI_VIDEO also needs ACPI_WMI
+ select X86_PLATFORM_DEVICES if ACPI && X86
+ select ACPI_WMI if ACPI && X86
help
Choose this option if you have a recent AMD Radeon graphics card.
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_encoders.c b/drivers/gpu/drm/amd/amdgpu/atombios_encoders.c
index fa7421afb9a6..6be9ac2b9c5b 100644
--- a/drivers/gpu/drm/amd/amdgpu/atombios_encoders.c
+++ b/drivers/gpu/drm/amd/amdgpu/atombios_encoders.c
@@ -26,6 +26,8 @@
#include <linux/pci.h>
+#include <acpi/video.h>
+
#include <drm/drm_crtc_helper.h>
#include <drm/amdgpu_drm.h>
#include "amdgpu.h"
@@ -182,7 +184,12 @@ void amdgpu_atombios_encoder_init_backlight(struct amdgpu_encoder *amdgpu_encode
return;
if (!(adev->mode_info.firmware_flags & ATOM_BIOS_INFO_BL_CONTROLLED_BY_GPU))
- return;
+ goto register_acpi_backlight;
+
+ if (!acpi_video_backlight_use_native()) {
+ drm_info(dev, "Skipping amdgpu atom DIG backlight registration\n");
+ goto register_acpi_backlight;
+ }
pdata = kmalloc(sizeof(struct amdgpu_backlight_privdata), GFP_KERNEL);
if (!pdata) {
@@ -218,6 +225,11 @@ void amdgpu_atombios_encoder_init_backlight(struct amdgpu_encoder *amdgpu_encode
error:
kfree(pdata);
return;
+
+register_acpi_backlight:
+ /* Try registering an ACPI video backlight device instead. */
+ acpi_video_register_backlight();
+ return;
}
void
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 8660d93cc405..3f456978dca7 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -89,6 +89,8 @@
#include <drm/drm_audio_component.h>
#include <drm/drm_gem_atomic_helper.h>
+#include <acpi/video.h>
+
#include "ivsrcid/dcn/irqsrcs_dcn_1_0.h"
#include "dcn/dcn_1_0_offset.h"
@@ -4055,6 +4057,13 @@ amdgpu_dm_register_backlight_device(struct amdgpu_display_manager *dm)
amdgpu_dm_update_backlight_caps(dm, dm->num_of_edps);
dm->brightness[dm->num_of_edps] = AMDGPU_MAX_BL_LEVEL;
+ if (!acpi_video_backlight_use_native()) {
+ drm_info(adev_to_drm(dm->adev), "Skipping amdgpu DM backlight registration\n");
+ /* Try registering an ACPI video backlight device instead. */
+ acpi_video_register_backlight();
+ return;
+ }
+
props.max_brightness = AMDGPU_MAX_BL_LEVEL;
props.brightness = AMDGPU_MAX_BL_LEVEL;
props.type = BACKLIGHT_RAW;
diff --git a/drivers/gpu/drm/gma500/Kconfig b/drivers/gpu/drm/gma500/Kconfig
index 0cff20265f97..807b989e3c77 100644
--- a/drivers/gpu/drm/gma500/Kconfig
+++ b/drivers/gpu/drm/gma500/Kconfig
@@ -7,6 +7,8 @@ config DRM_GMA500
select ACPI_VIDEO if ACPI
select BACKLIGHT_CLASS_DEVICE if ACPI
select INPUT if ACPI
+ select X86_PLATFORM_DEVICES if ACPI
+ select ACPI_WMI if ACPI
help
Say yes for an experimental 2D KMS framebuffer driver for the
Intel GMA500 (Poulsbo), Intel GMA600 (Moorestown/Oak Trail) and
diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig
index 7ae3b7d67fcf..3efce05d7b57 100644
--- a/drivers/gpu/drm/i915/Kconfig
+++ b/drivers/gpu/drm/i915/Kconfig
@@ -23,6 +23,8 @@ config DRM_I915
# but for select to work, need to select ACPI_VIDEO's dependencies, ick
select BACKLIGHT_CLASS_DEVICE if ACPI
select INPUT if ACPI
+ select X86_PLATFORM_DEVICES if ACPI
+ select ACPI_WMI if ACPI
select ACPI_VIDEO if ACPI
select ACPI_BUTTON if ACPI
select SYNC_FILE
diff --git a/drivers/gpu/drm/i915/display/intel_acpi.c b/drivers/gpu/drm/i915/display/intel_acpi.c
index e78430001f07..9df78e7caa2b 100644
--- a/drivers/gpu/drm/i915/display/intel_acpi.c
+++ b/drivers/gpu/drm/i915/display/intel_acpi.c
@@ -7,6 +7,7 @@
#include <linux/pci.h>
#include <linux/acpi.h>
+#include <acpi/video.h>
#include "i915_drv.h"
#include "intel_acpi.h"
@@ -331,3 +332,29 @@ void intel_acpi_assign_connector_fwnodes(struct drm_i915_private *i915)
*/
fwnode_handle_put(fwnode);
}
+
+void intel_acpi_video_register(struct drm_i915_private *i915)
+{
+ struct drm_connector_list_iter conn_iter;
+ struct drm_connector *connector;
+
+ acpi_video_register();
+
+ /*
+ * If i915 is driving an internal panel without registering its native
+ * backlight handler try to register the acpi_video backlight.
+ * For panels not driven by i915 another GPU driver may still register
+ * a native backlight later and acpi_video_register_backlight() should
+ * only be called after any native backlights have been registered.
+ */
+ drm_connector_list_iter_begin(&i915->drm, &conn_iter);
+ drm_for_each_connector_iter(connector, &conn_iter) {
+ struct intel_panel *panel = &to_intel_connector(connector)->panel;
+
+ if (panel->backlight.funcs && !panel->backlight.device) {
+ acpi_video_register_backlight();
+ break;
+ }
+ }
+ drm_connector_list_iter_end(&conn_iter);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_acpi.h b/drivers/gpu/drm/i915/display/intel_acpi.h
index 4a760a2baed9..6a0007452f95 100644
--- a/drivers/gpu/drm/i915/display/intel_acpi.h
+++ b/drivers/gpu/drm/i915/display/intel_acpi.h
@@ -14,6 +14,7 @@ void intel_unregister_dsm_handler(void);
void intel_dsm_get_bios_data_funcs_supported(struct drm_i915_private *i915);
void intel_acpi_device_id_update(struct drm_i915_private *i915);
void intel_acpi_assign_connector_fwnodes(struct drm_i915_private *i915);
+void intel_acpi_video_register(struct drm_i915_private *i915);
#else
static inline void intel_register_dsm_handler(void) { return; }
static inline void intel_unregister_dsm_handler(void) { return; }
@@ -23,6 +24,8 @@ static inline
void intel_acpi_device_id_update(struct drm_i915_private *i915) { return; }
static inline
void intel_acpi_assign_connector_fwnodes(struct drm_i915_private *i915) { return; }
+static inline
+void intel_acpi_video_register(struct drm_i915_private *i915) { return; }
#endif /* CONFIG_ACPI */
#endif /* __INTEL_ACPI_H__ */
diff --git a/drivers/gpu/drm/i915/display/intel_backlight.c b/drivers/gpu/drm/i915/display/intel_backlight.c
index 110fc98ec280..84639e9df5c9 100644
--- a/drivers/gpu/drm/i915/display/intel_backlight.c
+++ b/drivers/gpu/drm/i915/display/intel_backlight.c
@@ -8,6 +8,8 @@
#include <linux/pwm.h>
#include <linux/string_helpers.h>
+#include <acpi/video.h>
+
#include "intel_backlight.h"
#include "intel_connector.h"
#include "intel_de.h"
@@ -950,6 +952,11 @@ int intel_backlight_device_register(struct intel_connector *connector)
WARN_ON(panel->backlight.max == 0);
+ if (!acpi_video_backlight_use_native()) {
+ drm_info(&i915->drm, "Skipping intel_backlight registration\n");
+ return 0;
+ }
+
memset(&props, 0, sizeof(props));
props.type = BACKLIGHT_RAW;
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index fc5d94862ef3..6a1c15e6ce7f 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -9084,7 +9084,7 @@ void intel_display_driver_register(struct drm_i915_private *i915)
/* Must be done after probing outputs */
intel_opregion_register(i915);
- acpi_video_register();
+ intel_acpi_video_register(i915);
intel_audio_init(i915);
diff --git a/drivers/gpu/drm/nouveau/nouveau_acpi.c b/drivers/gpu/drm/nouveau/nouveau_acpi.c
index 6140db756d06..8cf096f841a9 100644
--- a/drivers/gpu/drm/nouveau/nouveau_acpi.c
+++ b/drivers/gpu/drm/nouveau/nouveau_acpi.c
@@ -386,3 +386,13 @@ nouveau_acpi_edid(struct drm_device *dev, struct drm_connector *connector)
return kmemdup(edid, EDID_LENGTH, GFP_KERNEL);
}
+
+bool nouveau_acpi_video_backlight_use_native(void)
+{
+ return acpi_video_backlight_use_native();
+}
+
+void nouveau_acpi_video_register_backlight(void)
+{
+ acpi_video_register_backlight();
+}
diff --git a/drivers/gpu/drm/nouveau/nouveau_acpi.h b/drivers/gpu/drm/nouveau/nouveau_acpi.h
index 330f9b837066..e39dd8b94b8b 100644
--- a/drivers/gpu/drm/nouveau/nouveau_acpi.h
+++ b/drivers/gpu/drm/nouveau/nouveau_acpi.h
@@ -11,6 +11,8 @@ void nouveau_register_dsm_handler(void);
void nouveau_unregister_dsm_handler(void);
void nouveau_switcheroo_optimus_dsm(void);
void *nouveau_acpi_edid(struct drm_device *, struct drm_connector *);
+bool nouveau_acpi_video_backlight_use_native(void);
+void nouveau_acpi_video_register_backlight(void);
#else
static inline bool nouveau_is_optimus(void) { return false; };
static inline bool nouveau_is_v1_dsm(void) { return false; };
@@ -18,6 +20,8 @@ static inline void nouveau_register_dsm_handler(void) {}
static inline void nouveau_unregister_dsm_handler(void) {}
static inline void nouveau_switcheroo_optimus_dsm(void) {}
static inline void *nouveau_acpi_edid(struct drm_device *dev, struct drm_connector *connector) { return NULL; }
+static inline bool nouveau_acpi_video_backlight_use_native(void) { return true; }
+static inline void nouveau_acpi_video_register_backlight(void) {}
#endif
#endif
diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c b/drivers/gpu/drm/nouveau/nouveau_backlight.c
index a2141d3d9b1d..a614582779ca 100644
--- a/drivers/gpu/drm/nouveau/nouveau_backlight.c
+++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c
@@ -38,6 +38,7 @@
#include "nouveau_reg.h"
#include "nouveau_encoder.h"
#include "nouveau_connector.h"
+#include "nouveau_acpi.h"
static struct ida bl_ida;
#define BL_NAME_SIZE 15 // 12 for name + 2 for digits + 1 for '\0'
@@ -405,6 +406,11 @@ nouveau_backlight_init(struct drm_connector *connector)
goto fail_alloc;
}
+ if (!nouveau_acpi_video_backlight_use_native()) {
+ NV_INFO(drm, "Skipping nv_backlight registration\n");
+ goto fail_alloc;
+ }
+
if (!nouveau_get_backlight_name(backlight_name, bl)) {
NV_ERROR(drm, "Failed to retrieve a unique name for the backlight interface\n");
goto fail_alloc;
@@ -430,6 +436,13 @@ nouveau_backlight_init(struct drm_connector *connector)
fail_alloc:
kfree(bl);
+ /*
+ * If we get here we have an internal panel, but no nv_backlight,
+ * try registering an ACPI video backlight device instead.
+ */
+ if (ret == 0)
+ nouveau_acpi_video_register_backlight();
+
return ret;
}
diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c
index c93040e60d04..2b01edea8fe8 100644
--- a/drivers/gpu/drm/radeon/atombios_encoders.c
+++ b/drivers/gpu/drm/radeon/atombios_encoders.c
@@ -32,6 +32,8 @@
#include <drm/drm_file.h>
#include <drm/radeon_drm.h>
+#include <acpi/video.h>
+
#include "atom.h"
#include "radeon_atombios.h"
#include "radeon.h"
@@ -209,6 +211,11 @@ void radeon_atom_backlight_init(struct radeon_encoder *radeon_encoder,
if (!(rdev->mode_info.firmware_flags & ATOM_BIOS_INFO_BL_CONTROLLED_BY_GPU))
return;
+ if (!acpi_video_backlight_use_native()) {
+ drm_info(dev, "Skipping radeon atom DIG backlight registration\n");
+ return;
+ }
+
pdata = kmalloc(sizeof(struct radeon_backlight_privdata), GFP_KERNEL);
if (!pdata) {
DRM_ERROR("Memory allocation failed\n");
diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c
index 46549d5179ee..c1cbebb51be1 100644
--- a/drivers/gpu/drm/radeon/radeon_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_encoders.c
@@ -30,6 +30,8 @@
#include <drm/drm_device.h>
#include <drm/radeon_drm.h>
+#include <acpi/video.h>
+
#include "radeon.h"
#include "radeon_atombios.h"
#include "radeon_legacy_encoders.h"
@@ -167,7 +169,7 @@ static void radeon_encoder_add_backlight(struct radeon_encoder *radeon_encoder,
return;
if (radeon_backlight == 0) {
- return;
+ use_bl = false;
} else if (radeon_backlight == 1) {
use_bl = true;
} else if (radeon_backlight == -1) {
@@ -193,6 +195,13 @@ static void radeon_encoder_add_backlight(struct radeon_encoder *radeon_encoder,
else
radeon_legacy_backlight_init(radeon_encoder, connector);
}
+
+ /*
+ * If there is no native backlight device (which may happen even when
+ * use_bl==true) try registering an ACPI video backlight device instead.
+ */
+ if (!rdev->mode_info.bl_encoder)
+ acpi_video_register_backlight();
}
void
diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
index 1a66fb969ee7..0cd32c65456c 100644
--- a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
@@ -33,6 +33,8 @@
#include <drm/drm_util.h>
#include <drm/radeon_drm.h>
+#include <acpi/video.h>
+
#include "radeon.h"
#include "radeon_asic.h"
#include "radeon_legacy_encoders.h"
@@ -387,6 +389,11 @@ void radeon_legacy_backlight_init(struct radeon_encoder *radeon_encoder,
return;
#endif
+ if (!acpi_video_backlight_use_native()) {
+ drm_info(dev, "Skipping radeon legacy LVDS backlight registration\n");
+ return;
+ }
+
pdata = kmalloc(sizeof(struct radeon_backlight_privdata), GFP_KERNEL);
if (!pdata) {
DRM_ERROR("Memory allocation failed\n");
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-10 20:04:39 +0100