linux/include/drm
Rajeev Nandan 10f7b40e4f drm/panel: add basic DP AUX backlight support
Some panels support backlight control over DP AUX channel using
VESA's standard backlight control interface.
Using new DRM eDP backlight helpers, add support to create and
register a backlight for those panels in drm_panel to simplify
the panel drivers.

The panel driver with access to "struct drm_dp_aux" can create and
register a backlight device using following code snippet in its
probe() function:

	err = drm_panel_dp_aux_backlight(panel, aux);
	if (err)
		return err;

Then drm_panel will handle backlight_(enable|disable) calls
similar to the case when drm_panel_of_backlight() is used.

Currently, we are not supporting one feature where the source
device can combine the backlight brightness levels set through
DP AUX and the BL_PWM_DIM eDP connector pin. Since it's not
required for the basic backlight controls, it can be added later.

Signed-off-by: Rajeev Nandan <rajeevny@codeaurora.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Lyude Paul <lyude@redhat.com>
[dianders: added blank line for warning when applying]
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1624726268-14869-2-git-send-email-rajeevny@codeaurora.org
2021-07-09 06:47:11 -07:00
..
bridge drm/bridge/synopsys: dw-hdmi: Add an option to suppress loading CEC driver 2021-04-20 17:22:38 +02:00
i2c
ttm drm/ttm: add TTM_PL_FLAG_TEMPORARY flag v3 2021-06-23 14:59:39 -04:00
amd_asic_type.h drm/amdgpu: add yellow carp asic_type enum 2021-06-04 16:03:05 -04:00
drm_aperture.h drm/aperture: Pass DRM driver structure instead of driver name 2021-07-01 11:11:55 +02:00
drm_atomic.h drm: fix doc warnings in drm_atomic.h 2021-06-04 12:40:01 -04:00
drm_atomic_helper.h drm: automatic legacy gamma support 2020-12-15 15:46:03 +02:00
drm_atomic_state_helper.h
drm_atomic_uapi.h
drm_audio_component.h ALSA: hda/i915 - fix list corruption with concurrent probes 2020-10-09 16:46:04 +02:00
drm_auth.h
drm_blend.h
drm_bridge.h drm: drm_bridge.h: delete duplicated word in comment 2020-07-15 14:02:34 +02:00
drm_bridge_connector.h
drm_cache.h drm: Add a prefetching memcpy_from_wc 2021-06-07 16:07:08 +02:00
drm_client.h drm/gem: Store client buffer mappings as struct dma_buf_map 2020-11-09 09:19:45 +01:00
drm_color_mgmt.h
drm_connector.h drm: Mention the power state requirement on side-channel operations 2021-06-23 14:32:27 +02:00
drm_crtc.h drm: drm_crc: fix a kernel-doc markup 2021-01-14 15:11:46 +01:00
drm_crtc_helper.h
drm_damage_helper.h
drm_debugfs.h
drm_debugfs_crc.h
drm_device.h drm: Mark AGP implementation and ioctls as legacy 2021-05-10 15:46:58 +02:00
drm_displayid.h drm/displayid: rename displayid_hdr to displayid_header 2021-03-31 15:42:39 +03:00
drm_dp_aux_bus.h drm: Introduce the DP AUX bus 2021-06-11 12:30:39 -07:00
drm_dp_dual_mode_helper.h drm/dp_dual_mode: Pass drm_device to drm_lspcon_(get|set)_mode() 2021-04-27 18:43:44 -04:00
drm_dp_helper.h drm: Mention the power state requirement on side-channel operations 2021-06-23 14:32:27 +02:00
drm_dp_mst_helper.h drm/dp_mst: Use kHz as link rate units when settig source max link caps at init 2021-05-27 15:30:59 -04:00
drm_drv.h drm: Fix 3 typos in the inline doc 2021-03-26 11:46:33 +01:00
drm_dsc.h - Display hotplug fix for gen2/gen3 (Chris) 2021-01-07 12:20:29 +01:00
drm_edid.h drm/displayid: add separate drm_displayid.c 2021-03-31 15:41:35 +03:00
drm_encoder.h drm/encoder: Add macro drmm_plain_encoder_alloc() 2021-03-29 16:46:43 +01:00
drm_encoder_slave.h
drm_fb_cma_helper.h drm: Add and export function drm_fb_cma_sync_non_coherent 2021-05-25 11:42:09 +01:00
drm_fb_helper.h drm/aperture: Inline fbdev conflict helpers into aperture helpers 2021-04-14 09:00:04 +02:00
drm_file.h drm/drm_vblank: set the dma-fence timestamp during send_vblank_event 2021-02-24 21:05:54 +05:30
drm_fixed.h
drm_flip_work.h
drm_format_helper.h drm/format-helper: Add blitter functions 2021-05-01 12:45:03 +02:00
drm_fourcc.h drm/fourcc: Remove struct drm_format_buf_name 2021-05-27 08:34:57 +02:00
drm_framebuffer.h
drm_gem.h drm: Don't export the drm_gem_dumb_destroy() function 2021-01-05 07:20:25 +02:00
drm_gem_atomic_helper.h drm/gem: Move drm_gem_fb_prepare_fb() to GEM atomic helpers 2021-02-23 08:54:22 +01:00
drm_gem_cma_helper.h drm: Add support for GEM buffers backed by non-coherent memory 2021-05-25 11:41:07 +01:00
drm_gem_framebuffer_helper.h drm/gem: Move drm_gem_fb_prepare_fb() to GEM atomic helpers 2021-02-23 08:54:22 +01:00
drm_gem_shmem_helper.h drm/shmem-helper: Removed drm_gem_shmem_create_object_cached() 2020-11-24 09:10:33 +01:00
drm_gem_ttm_helper.h drm/gem-ttm-helper: Provide helper for struct drm_driver.dumb_map_offset 2021-04-11 20:14:45 +02:00
drm_gem_vram_helper.h drm/vram-helper: Unexport drm_vram_helper_{alloc,release}_mm() 2021-07-05 08:55:11 +02:00
drm_hashtab.h
drm_hdcp.h drm/hdcp: DP HDCP2.2 errata LC_Send_L_Prime=16 2021-03-31 14:27:43 +03:00
drm_ioctl.h
drm_irq.h drm/irq: Add the new api to install irq 2020-12-03 03:57:15 -05:00
drm_lease.h
drm_legacy.h drm: Mark AGP implementation and ioctls as legacy 2021-05-10 15:46:58 +02:00
drm_managed.h drm: Remove drmm_add_final_kfree() declaration from public headers 2020-12-05 20:01:12 +01:00
drm_mipi_dbi.h drm/dbi: Print errors for mipi_dbi_command() 2021-07-05 00:22:51 +02:00
drm_mipi_dsi.h drm: Mention the power state requirement on side-channel operations 2021-06-23 14:32:27 +02:00
drm_mm.h drm: fix spelling error in comments 2020-09-17 13:39:44 +02:00
drm_mode_config.h drm/modifiers: Enforce consistency between the cap an IN_FORMATS 2021-05-12 11:31:29 +02:00
drm_mode_object.h
drm_modes.h drm/modes: add non-OF stub for of_get_drm_display_mode 2021-01-08 19:42:14 +01:00
drm_modeset_helper.h
drm_modeset_helper_vtables.h drm/atomic-helper: make drm_gem_plane_helper_prepare_fb the default 2021-06-24 15:35:13 +02:00
drm_modeset_lock.h drm/modeset-lock: Take the modeset BKL for legacy drivers 2020-08-17 13:41:50 -04:00
drm_of.h
drm_panel.h drm/panel: add basic DP AUX backlight support 2021-07-09 06:47:11 -07:00
drm_pciids.h
drm_plane.h drm/gem: Move drm_gem_fb_prepare_fb() to GEM atomic helpers 2021-02-23 08:54:22 +01:00
drm_plane_helper.h
drm_prime.h drm/prime: split array import functions v4 2020-11-30 15:00:45 +01:00
drm_print.h drm/print: Handle potentially NULL drm_devices in drm_dbg_* 2021-04-27 18:43:44 -04:00
drm_probe_helper.h
drm_property.h drm: Fix macro name DRM_MODE_PROP_OBJECT in code comment 2021-01-12 09:56:48 +01:00
drm_rect.h drm: Add function to convert rect in 16.16 fixed format to regular format 2021-01-05 05:32:52 -08:00
drm_scdc_helper.h
drm_self_refresh_helper.h
drm_simple_kms_helper.h drm/simple-helper: drm_gem_simple_display_pipe_prepare_fb as default 2021-06-24 15:39:46 +02:00
drm_syncobj.h
drm_sysfs.h
drm_util.h
drm_utils.h
drm_vblank.h drm/vblank: Document drm_crtc_vblank_restore constraints 2021-02-10 12:38:55 +01:00
drm_vblank_work.h drm/vblank: Add vblank works 2020-07-16 18:16:31 -04:00
drm_vma_manager.h drm/vma: Add a driver_private member to vma_node. 2021-06-11 10:53:18 +02:00
drm_writeback.h
gma_drm.h
gpu_scheduler.h drm/sched: Allow using a dedicated workqueue for the timeout/fault tdr 2021-07-01 08:53:25 +02:00
gud.h drm: Add GUD USB Display driver 2021-03-16 13:12:46 +01:00
i915_component.h
i915_drm.h
i915_mei_hdcp_interface.h
i915_pciids.h drm/i915/adl_p: Add PCI Devices IDs 2021-05-07 10:51:38 +03:00
intel-gtt.h iommu/vt-d: Move intel_iommu_gfx_mapped to Intel IOMMU header 2020-09-04 12:12:45 +02:00
intel_lpe_audio.h
spsc_queue.h
task_barrier.h