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2019-12-17drm/print: introduce new struct drm_device based logging macrosJani Nikula1-0/+65
Add new struct drm_device based logging macros modeled after the core kernel device based logging macros. These would be preferred over the drm printk and struct device based macros in drm code, where possible. We have existing drm specific struct device based logging functions, but they are too verbose to use for two main reasons: * The names are unnecessarily long, for example DRM_DEV_DEBUG_KMS(). * The use of struct device over struct drm_device is too generic for most users, leading to an extra dereference. For example: DRM_DEV_DEBUG_KMS(drm->dev, "Hello, world\n"); vs. drm_dbg_kms(drm, "Hello, world\n"); It's a matter of taste, but the SHOUTING UPPERCASE has been argued to be less readable than lowercase. Some names are changed from old DRM names to be based on the core kernel logging functions. For example, NOTE -> notice, ERROR -> err, DEBUG -> dbg. Due to the conflation of DRM_DEBUG and DRM_DEBUG_DRIVER macro use (DRM_DEBUG is used widely in drivers though it's supposed to be a core debugging category), they are named as drm_dbg_core and drm_dbg, respectively. The drm_err and _once/_ratelimited variants no longer include the function name in order to be able to use the core device based logging macros. Arguably this is not a significant change; error messages should not be so common to be only distinguishable by the function name. Ratelimited debug logging macros are to be added later. Cc: Sam Ravnborg <[email protected]> Acked-by: Ville Syrjälä <[email protected]> Reviewed-by: Rodrigo Vivi <[email protected]> Acked-by: Sean Paul <[email protected]> Acked-by: Sam Ravnborg <[email protected]> Signed-off-by: Jani Nikula <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-17Merge tag 'drm-misc-next-2019-12-16' of ↵Daniel Vetter19-259/+414
git://anongit.freedesktop.org/drm/drm-misc into drm-next drm-misc-next for v5.6: UAPI Changes: - Add support for DMA-BUF HEAPS. Cross-subsystem Changes: - mipi dsi definition updates, pulled into drm-intel as well. - Add lockdep annotations for dma_resv vs mmap_sem and fs_reclaim. - Remove support for dma-buf kmap/kunmap. - Constify fb_ops in all fbdev drivers, including drm drivers and drm-core, and media as well. Core Changes: - Small cleanups to ttm. - Fix SCDC definition. - Assorted cleanups to core. - Add todo to remove load/unload hooks, and use generic fbdev emulation. - Assorted documentation updates. - Use blocking ww lock in ttm fault handler. - Remove drm_fb_helper_fbdev_setup/teardown. - Warning fixes with W=1 for atomic. - Use drm_debug_enabled() instead of drm_debug flag testing in various drivers. - Fallback to nontiled mode in fbdev emulation when not all tiles are present. (Later on reverted) - Various kconfig indentation fixes in core and drivers. - Fix freeing transactions in dp-mst correctly. - Sean Paul is steping down as core maintainer. :-( - Add lockdep annotations for atomic locks vs dma-resv. - Prevent use-after-free for a bad job in drm_scheduler. - Fill out all block sizes in the P01x and P210 definitions. - Avoid division by zero in drm/rect, and fix bounds. - Add drm/rect selftests. - Add aspect ratio and alternate clocks for HDMI 4k modes. - Add todo for drm_framebuffer_funcs and fb_create cleanup. - Drop DRM_AUTH for prime import/export ioctls. - Clear DP-MST payload id tables downstream when initializating. - Fix for DSC throughput definition. - Add extra FEC definitions. - Fix fake offset in drm_gem_object_funs.mmap. - Stop using encoder->bridge in core directly - Handle bridge chaining slightly better. - Add backlight support to drm/panel, and use it in many panel drivers. - Increase max number of y420 modes from 128 to 256, as preparation to add the new modes. Driver Changes: - Small fixes all over. - Fix documentation in vkms. - Fix mmap_sem vs dma_resv in nouveau. - Small cleanup in komeda. - Add page flip support in gma500 for psb/cdv. - Add ddc symlink in the connector sysfs directory for many drivers. - Add support for analogic an6345, and fix small bugs in it. - Add atomic modesetting support to ast. - Fix radeon fault handler VMA race. - Switch udl to use generic shmem helpers. - Unconditional vblank handling for mcde. - Miscellaneous fixes to mcde. - Tweak debug output from komeda using debugfs. - Add gamma and color transform support to komeda for DOU-IPS. - Add support for sony acx424AKP panel. - Various small cleanups to gma500. - Use generic fbdev emulation in udl, and replace udl_framebuffer with generic implementation. - Add support for Logic PD Type 28 panel. - Use drm_panel_* wrapper functions in exynos/tegra/msm. - Add devicetree bindings for generic DSI panels. - Don't include drm_pci.h directly in many drivers. - Add support for begin/end_cpu_access in udmabuf. - Stop using drm_get_pci_dev in gma500 and mga200. - Fixes to UDL damage handling, and use dma_buf_begin/end_cpu_access. - Add devfreq thermal support to panfrost. - Fix hotplug with daisy chained monitors by removing VCPI when disabling topology manager. - meson: Add support for OSD1 plane AFBC commit. - Stop displaying garbage when toggling ast primary plane on/off. - More cleanups and fixes to UDL. - Add D32 suport to komeda. - Remove globle copy of drm_dev in gma500. - Add support for Boe Himax8279d MIPI-DSI LCD panel. - Add support for ingenic JZ4770 panel. - Small null pointer deference fix in ingenic. - Remove support for the special tfp420 driver, as there is a generic way to do it. Signed-off-by: Daniel Vetter <[email protected]> From: Maarten Lankhorst <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-16drm/modes: parse_cmdline: Add support for specifying panel_orientation (v2)Hans de Goede1-0/+8
Sometimes we want to override a connector's panel_orientation from the kernel commandline. Either for testing and for special cases, e.g. a kiosk like setup which uses a TV mounted in portrait mode. Users can already specify a "rotate" option through a video= kernel cmdline option. But that only supports 0/180 degrees (see drm_client_modeset TODO) and only works for in kernel modeset clients, not for userspace kms users. The "panel-orientation" connector property OTOH does support 90/270 degrees as it leaves dealing with the rotation up to userspace and this does work for userspace kms clients (at least those which support this property). Changes in v2: -Add missing ':' after @panel_orientation (reported by kbuild test robot) BugLink: https://gitlab.freedesktop.org/plymouth/plymouth/merge_requests/83 Acked-by: Maxime Ripard <[email protected]> Signed-off-by: Hans de Goede <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-16drm/bridge/synopsys: dsi: driver-specific configuration of phy timingsHeiko Stuebner1-0/+9
The timing values for dw-dsi are often dependent on the used display and according to Philippe Cornu will most likely also depend on the used phy technology in the soc-specific implementation. To solve this and allow specific implementations to define them as needed add a new get_timing callback to phy_ops and call this from the dphy_timing function to retrieve the necessary values for the specific mode. Right now this handles the hs2lp + lp2hs where Rockchip SoCs need handling according to the phy speed, while STM seems to be ok with static values. changes in v5: - rebase on 5.5-rc1 - merge into px30 dsi series to prevent ordering conflicts changes in v4: - rebase to make it directly fit on top of drm-misc-next after all changes in v3: - check existence of phy_ops->get_timing in __dw_mipi_dsi_probe() - emit actual error when get_timing() call fails - add tags from Philippe and Yannick changes in v2: - add driver-specific handling, don't force all bridge users to use the same timings, as suggested by Philippe Suggested-by: Philippe Cornu <[email protected]> Signed-off-by: Heiko Stuebner <[email protected]> Reviewed-by: Philippe Cornu <[email protected]> Tested-by: Yannick Fertre <[email protected]> Reviewed-by: Neil Armstrong <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-12drm/i915/cml: Separate U series pci id from origianl list.Lee Shawn C1-7/+13
U series device need different DDI buffer setup for eDP and DP. If driver did not recognize ULT id proerply. The setting for H and S series would be used. Cc: Rodrigo Vivi <[email protected]> Cc: Jani Nikula <[email protected]> Cc: Anusha Srivatsa <[email protected]> Cc: Cooper Chiou <[email protected]> Signed-off-by: Lee Shawn C <[email protected]> Signed-off-by: Ville Syrjälä <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-12drm/i915/cml: Remove unsupport PCI IDLee Shawn C1-4/+0
commit 'a7b4deeb02b9 ("drm/i915/cml: Add CML PCI IDS)' introduced new PCI ID that CML support. But some PCI IDs were removed in BSpec for CML. This patch is used to eliminate the unsed ID. Cc: Rodrigo Vivi <[email protected]> Cc: Jani Nikula <[email protected]> Cc: Anusha Srivatsa <[email protected]> Cc: Cooper Chiou <[email protected]> Signed-off-by: Lee Shawn C <[email protected]> Signed-off-by: Ville Syrjälä <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-11drm/edid: Increase size of VDB and CMDB bitmaps to 256 bitsThomas Anderson1-8/+8
CEA-861-G adds modes up to 219, so increase the size of the maps in preparation for adding the new modes to drm_edid.c. Signed-off-by: Thomas Anderson <[email protected]> Signed-off-by: Ville Syrjälä <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-11Merge drm/drm-next into drm-intel-next-queuedJani Nikula3-1/+19
Sync up with v5.5-rc1 to get the updated lock_release() API among other things. Fix the conflict reported by Stephen Rothwell [1]. [1] http://lore.kernel.org/r/[email protected] Signed-off-by: Jani Nikula <[email protected]>
2019-12-10drm/atomic: Update docs around locking and commit sequencingDaniel Vetter1-2/+11
Both locking and especially sequencing of nonblocking commits have evolved a lot. The details are all there, but I noticed that the big picture and connections have fallen behind a bit. Apply polish. Motivated by some review discussions with Thierry. v2: Review from Thierry Reviewed-by: Thierry Reding <[email protected]> Cc: Thierry Reding <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-09drm/panel: drop drm_device from drm_panelSam Ravnborg1-7/+0
The panel drivers used drm_panel.drm for two purposes: 1) Argument to drm_mode_duplicate() 2) drm->dev was used in error messages The first usage is replaced with drm_connector.dev - drm_connector is already connected to a drm_device and we have a valid connector The second usage is replaced with drm_panel.dev - this makes drivers more consistent in their dev argument used for dev_err() and friends With these replacements there are no more uses of drm_panel.drm, so it is removed from struct drm_panel. With this change drm_panel_attach() and drm_panel_detach() no longer have any use as they are empty functions. v2: - editorial correction in changelog (Laurent) Signed-off-by: Sam Ravnborg <[email protected]> Reviewed-by: Laurent Pinchart <[email protected]> Reviewed-by: Linus Walleij <[email protected]> Cc: Thierry Reding <[email protected]> Cc: Laurent Pinchart <[email protected]> Cc: Sam Ravnborg <[email protected]> Cc: Maarten Lankhorst <[email protected]> Cc: Maxime Ripard <[email protected]> Cc: David Airlie <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: Linus Walleij <[email protected]> Cc: Jagan Teki <[email protected]> Cc: Stefan Mavrodiev <[email protected]> Cc: Robert Chiras <[email protected]> Cc: "Guido Günther" <[email protected]> Cc: Purism Kernel Team <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-09drm/panel: decouple connector from drm_panelSam Ravnborg1-8/+1
To facilitate moving connector creation to display drivers, decouple the drm_connector from drm_panel. This patch adds a connector argument to drm_panel_get_modes(). All users of drm_panel_get_modes() already had the connector available, so updating users was trivial. With this patch drm_panel no longer keeps a reference to the drm_connector. Signed-off-by: Sam Ravnborg <[email protected]> Reviewed-by: Laurent Pinchart <[email protected]> Reviewed-by: Linus Walleij <[email protected]> Acked-by: Jeffrey Hugo <[email protected]> Cc: Thierry Reding <[email protected]> Cc: Laurent Pinchart <[email protected]> Cc: Sam Ravnborg <[email protected]> Cc: Andrzej Hajda <[email protected]> Cc: Neil Armstrong <[email protected]> Cc: Jonas Karlman <[email protected]> Cc: Jernej Skrabec <[email protected]> Cc: Maarten Lankhorst <[email protected]> Cc: Maxime Ripard <[email protected]> Cc: David Airlie <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: Inki Dae <[email protected]> Cc: Joonyoung Shim <[email protected]> Cc: Seung-Woo Kim <[email protected]> Cc: Kyungmin Park <[email protected]> Cc: Kukjin Kim <[email protected]> Cc: Krzysztof Kozlowski <[email protected]> Cc: Stefan Agner <[email protected]> Cc: Alison Wang <[email protected]> Cc: Philipp Zabel <[email protected]> Cc: Shawn Guo <[email protected]> Cc: Sascha Hauer <[email protected]> Cc: Pengutronix Kernel Team <[email protected]> Cc: Fabio Estevam <[email protected]> Cc: NXP Linux Team <[email protected]> Cc: CK Hu <[email protected]> Cc: Matthias Brugger <[email protected]> Cc: Marek Vasut <[email protected]> Cc: Tomi Valkeinen <[email protected]> Cc: Kieran Bingham <[email protected]> Cc: Sandy Huang <[email protected]> Cc: "Heiko Stübner" <[email protected]> Cc: Benjamin Gaignard <[email protected]> Cc: Vincent Abriou <[email protected]> Cc: Chen-Yu Tsai <[email protected]> Cc: Jonathan Hunter <[email protected]> Cc: Torsten Duwe <[email protected]> Cc: Vasily Khoruzhick <[email protected]> Cc: Icenowy Zheng <[email protected]> Cc: Sean Paul <[email protected]> Cc: Linus Walleij <[email protected]> Cc: Boris Brezillon <[email protected]> Cc: Hariprasad Kelam <[email protected]> Cc: Alexios Zavras <[email protected]> Cc: Brian Masney <[email protected]> Cc: Rob Clark <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Allison Randal <[email protected]> Cc: Shayenne Moura <[email protected]> Cc: Abhinav Kumar <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-09drm/panel: add drm_connector argument to get_modes()Sam Ravnborg1-1/+2
Today the bridge creates the drm_connector, but that is planned to be moved to the display drivers. To facilitate this, update drm_panel_funcs.get_modes() to take drm_connector as an argument. All panel drivers implementing get_modes() are updated. v2: - drop accidental change (Laurent) - update docs for get_modes (Laurent) Signed-off-by: Sam Ravnborg <[email protected]> Reviewed-by: Laurent Pinchart <[email protected]> Reviewed-by: Linus Walleij <[email protected]> Cc: Thierry Reding <[email protected]> Cc: Laurent Pinchart <[email protected]> Cc: Maarten Lankhorst <[email protected]> Cc: Maxime Ripard <[email protected]> Cc: David Airlie <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: Linus Walleij <[email protected]> Cc: Jagan Teki <[email protected]> Cc: Stefan Mavrodiev <[email protected]> Cc: Robert Chiras <[email protected]> Cc: "Guido Günther" <[email protected]> Cc: Purism Kernel Team <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-09drm: get drm_bridge_panel connector via helperSam Ravnborg1-0/+1
The drm_connector created by drm_panel_bridge was accessed via drm_panel.connector. Avoid the detour around drm_panel by providing a simple get method. This avoids direct access to the connector field in drm_panel in the two users. The change is done in preparation for removal of drm_panel.connector. Update pl111 and tve200 to use the new helper. Signed-off-by: Sam Ravnborg <[email protected]> Reviewed-by: Laurent Pinchart <[email protected]> Reviewed-by: Linus Walleij <[email protected]> Cc: Andrzej Hajda <[email protected]> Cc: Neil Armstrong <[email protected]> Cc: Laurent Pinchart <[email protected]> Cc: Jonas Karlman <[email protected]> Cc: Jernej Skrabec <[email protected]> Cc: Eric Anholt <[email protected]> Cc: Linus Walleij <[email protected]> Cc: Maarten Lankhorst <[email protected]> Cc: Maxime Ripard <[email protected]> Cc: David Airlie <[email protected]> Cc: Daniel Vetter <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-09drm/panel: add backlight supportSam Ravnborg1-0/+25
Panels often support backlight as specified in a device tree. Update the drm_panel infrastructure to support this to simplify the drivers. With this the panel driver just needs to add the following to the probe() function: err = drm_panel_of_backlight(panel); if (err) return err; Then drm_panel will handle all the rest. There is one caveat with the backlight support. If drm_panel_(enable|disable) are called multiple times in a row then backlight_(enable|disable) will be called multiple times. The above will happen when a panel drivers unconditionally calls drm_panel_disable() in their shutdown() function, whan the panel is already disabled and then shutdown() is called. Reading the backlight code it seems safe to call the backlight_(enable|disable) several times. v3: - Improve comments, fix grammar (Laurent) - Do not fail in drm_panel_of_backlight() if no DT support (Laurent) - Log if backlight_(enable|disable) fails (Laurent) - Improve drm_panel_of_backlight() docs - Updated changelog with backlight analysis (triggered by Laurent) v2: - Drop test of CONFIG_DRM_PANEL in header-file (Laurent) - do not enable backlight if ->enable() returns an error Signed-off-by: Sam Ravnborg <[email protected]> Reviewed-by: Laurent Pinchart <[email protected]> Cc: Thierry Reding <[email protected]> Cc: Laurent Pinchart <[email protected]> Cc: Maarten Lankhorst <[email protected]> Cc: Maxime Ripard <[email protected]> Cc: Sean Paul <[email protected]> Cc: David Airlie <[email protected]> Cc: Daniel Vetter <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-09drm/drm_panel: no error when no callbackSam Ravnborg1-2/+14
The callbacks in drm_panel_funcs are optional, so do not return an error just because no callback is assigned. v2: - Document what functions in drm_panel_funcs are optional (Laurent) - Return -EOPNOTSUPP if get_modes() is not assigned (Laurent) (Sam: -EOPNOTSUPP seems to best error code in this situation) Signed-off-by: Sam Ravnborg <[email protected]> Reviewed-by: Laurent Pinchart <[email protected]> Cc: Maarten Lankhorst <[email protected]> Cc: Maxime Ripard <[email protected]> Cc: Thierry Reding <[email protected]> Cc: Sam Ravnborg <[email protected]> Cc: David Airlie <[email protected]> Cc: Daniel Vetter <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-09drm/bridge: Clarify the atomic enable/disable hooks semanticsBoris Brezillon1-4/+4
The [pre_]enable/[post_]disable hooks are passed the old atomic state. Update the doc and rename the arguments to make it clear. Signed-off-by: Boris Brezillon <[email protected]> Reviewed-by: Laurent Pinchart <[email protected]> Reviewed-by: Neil Armstrong <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-09drm/bridge: Add the drm_bridge_get_prev_bridge() helperBoris Brezillon1-0/+16
The drm_bridge_get_prev_bridge() helper will be useful for bridge drivers that want to do bus format negotiation with their neighbours. Signed-off-by: Boris Brezillon <[email protected]> Reviewed-by: Laurent Pinchart <[email protected]> Reviewed-by: Neil Armstrong <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-09drm/bridge: Add the drm_for_each_bridge_in_chain() helperBoris Brezillon1-0/+11
To iterate over all bridges attached to a specific encoder. Suggested-by: Laurent Pinchart <[email protected]> Signed-off-by: Boris Brezillon <[email protected]> Reviewed-by: Laurent Pinchart <[email protected]> Reviewed-by: Neil Armstrong <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-09drm/bridge: Make the bridge chain a double-linked listBoris Brezillon2-5/+14
So that each element in the chain can easily access its predecessor. This will be needed to support bus format negotiation between elements of the bridge chain. Signed-off-by: Boris Brezillon <[email protected]> Reviewed-by: Neil Armstrong <[email protected]> Reviewed-by: Laurent Pinchart <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-09drm: Stop accessing encoder->bridge directlyBoris Brezillon1-0/+15
We are about to replace the single-linked bridge list by a double-linked one based on list.h, leading to the suppression of the encoder->bridge field. But before we can do that we must provide a drm_bridge_chain_get_first_bridge() bridge helper and patch all drivers and core helpers to use it instead of directly accessing encoder->bridge. Note that we still have 2 drivers (VC4 and Exynos) manipulating the encoder->bridge field directly because they need to cut the bridge chain in order to control the enable/disable sequence. This is definitely not something we want to encourage, so let's keep those 2 oddities around until we find a better solution. Signed-off-by: Boris Brezillon <[email protected]> Reviewed-by: Laurent Pinchart <[email protected]> Reviewed-by: Neil Armstrong <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-09drm/bridge: Introduce drm_bridge_get_next_bridge()Boris Brezillon1-0/+13
And use it in drivers accessing the bridge->next field directly. This is part of our attempt to make the bridge chain a double-linked list based on the generic list helpers. Signed-off-by: Boris Brezillon <[email protected]> Reviewed-by: Neil Armstrong <[email protected]> Reviewed-by: Laurent Pinchart <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-09drm/bridge: Rename bridge helpers targeting a bridge chainBoris Brezillon1-30/+34
Change the prefix of bridge helpers targeting a bridge chain from drm_bridge_ to drm_bridge_chain_ to better reflect the fact that the operation will happen on all elements of chain, starting at the bridge passed in argument. Signed-off-by: Boris Brezillon <[email protected]> Reviewed-by: Neil Armstrong <[email protected]> Acked-by: Laurent Pinchart <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-06drm/i915: Add new EHL/JSL PCI idsJosé Roberto de Souza1-2/+5
Adding the recently added EHL/JSL PCI ids. BSpec: 29153 Cc: James Ausmus <[email protected]> Cc: Matt Roper <[email protected]> Signed-off-by: José Roberto de Souza <[email protected]> Reviewed-by: Matt Roper <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-06drm: call drm_gem_object_funcs.mmap with fake offsetGerd Hoffmann1-3/+1
The fake offset is going to stay, so change the calling convention for drm_gem_object_funcs.mmap to include the fake offset. Update all users accordingly. Note that this reverts 83b8a6f242ea ("drm/gem: Fix mmap fake offset handling for drm_gem_object_funcs.mmap") and on top then adds the fake offset to drm_gem_prime_mmap to make sure all paths leading to obj->funcs->mmap are consistent. v3: move fake-offset tweak in drm_gem_prime_mmap() so we have this code only once in the function (Rob Herring). Fixes: 83b8a6f242ea ("drm/gem: Fix mmap fake offset handling for drm_gem_object_funcs.mmap") Cc: Daniel Vetter <[email protected]> Cc: Rob Herring <[email protected]> Signed-off-by: Gerd Hoffmann <[email protected]> Reviewed-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-05drm: Add FEC registers for LT-tunable repeatersRodrigo Siqueira1-0/+2
FEC is supported since DP 1.4, and it was expanded for LT-tunable in DP 1.4a. This commit adds the address registers for FEC_ERROR_COUNT_PHY_REPEATER1 and FEC_CAPABILITY_PHY_REPEATER1. Cc: Abdoulaye Berthe <[email protected]> Cc: Harry Wentland <[email protected]> Cc: Leo Li <[email protected]> Cc: Jani Nikula <[email protected]> Cc: Manasi Navare <[email protected]> Cc: Ville Syrjälä <[email protected]> Signed-off-by: Abdoulaye Berthe <[email protected]> Signed-off-by: Rodrigo Siqueira <[email protected]> Reviewed-by: Zhan Liu <[email protected]> Signed-off-by: Rodrigo Siqueira <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-05drm: Fix DSC throughput mode 0 mask definitionRodrigo Siqueira1-1/+1
Commit d7cd0e053b17 introduced a change at DP_DSC_THROUGHPUT_MODE_0_170 which is not aligned with the spec. This commit replace 15 << 4 by 15 << 0 for DP_DSC_THROUGHPUT_MODE_0_170 in order to make it follow the specification. Cc: Harry Wentland <[email protected]> Cc: Leo Li <[email protected]> Cc: Alex Deucher <[email protected]> Cc: Nikola Cornij <[email protected]> Cc: Jani Nikula <[email protected]> Cc: Manasi Navare <[email protected]> Cc: Ville Syrjälä <[email protected]> Reviewed-by: Harry Wentland <[email protected]> Signed-off-by: Rodrigo Siqueira <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-05drm/dp_mst: Clear all payload id tables downstream when initializingSean Paul1-4/+12
It seems that on certain MST hubs, namely the CableMatters USB-C 2x DP hub, using the DP_PAYLOAD_ALLOCATE_SET and DP_PAYLOAD_TABLE_UPDATE_STATUS register ranges to clear any pre-existing payload allocations on the hub isn't always enough to reset things if the source device has been reset unexpectedly. Or at least, that's the current running theory. The precise behavior appears to be that when the source device gets reset unexpectedly, the hub begins reporting an available_pbn value of 0 for all of its ports. This is a bit inconsistent with the our theory, since this seems to happen even if previously set PBN allocations should have resulted in a non-zero available_pbn value. So, it's possible that something else may be going on here. Strangely though, sending a CLEAR_PAYLOAD_ID_TABLE broadcast request when initializing the MST topology seems to bring things into working order and make available_pbn work again. Since this is a pretty safe solution, let's go ahead and implement it. Changes since v1: * Change indenting on drm_dp_send_clear_payload_id_table() prototype * Remove some braces in drm_dp_send_clear_payload_id_table() * Reorganize some variable declarations in drm_dp_send_clear_payload_id_table() * Don't forget to handle DP_CLEAR_PAYLOAD_ID_TABLE in drm_dp_sideband_parse_reply() * Move drm_dp_send_clear_payload_id_table() call into drm_dp_mst_link_probe_work(), since we can't send sideband messages while under lock in drm_dp_mst_topology_mgr_set_mst() * Change commit message Acked-by: Daniel Vetter <[email protected]> Signed-off-by: Sean Paul <[email protected]> Signed-off-by: Lyude Paul <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-05drm/pci: Hide legacy PCI functions from non-legacy codeThomas Zimmermann2-16/+28
Declarations of drm_legacy_pci_{init,exit}() are being moved to drm_legacy.h. CONFIG_DRM_LEGACY protects the implementation. Signed-off-by: Thomas Zimmermann <[email protected]> Reviewed-by: Emil Velikov <[email protected]> Reviewed-by: Alex Deucher <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-12-05drm/pci: Only build drm_pci.c if CONFIG_PCI is setThomas Zimmermann1-3/+31
Non-PCI systems should not build PCI helpers. Set up source code, header file and Makefile accordingly. Signed-off-by: Thomas Zimmermann <[email protected]> Reviewed-by: Emil Velikov <[email protected]> Reviewed-by: Alex Deucher <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-11-30Merge tag 'drm-vmwgfx-coherent-2019-11-29' of ↵Linus Torvalds1-0/+14
git://anongit.freedesktop.org/drm/drm Pull drm coherent memory support for vmwgfx from Dave Airlie: "This is a separate pull for the mm pagewalking + drm/vmwgfx work Thomas did and you were involved in, I've left it separate in case you don't feel as comfortable with it as the other stuff. It has mm acks/r-b in the right places from what I can see" * tag 'drm-vmwgfx-coherent-2019-11-29' of git://anongit.freedesktop.org/drm/drm: drm/vmwgfx: Add surface dirty-tracking callbacks drm/vmwgfx: Implement an infrastructure for read-coherent resources drm/vmwgfx: Use an RBtree instead of linked list for MOB resources drm/vmwgfx: Implement an infrastructure for write-coherent resources mm: Add write-protect and clean utilities for address space ranges mm: Add a walk_page_mapping() function to the pagewalk code mm: pagewalk: Take the pagetable lock in walk_pte_range() mm: Remove BUG_ON mmap_sem not held from xxx_trans_huge_lock() drm/ttm: Convert vm callbacks to helpers drm/ttm: Remove explicit typecasts of vm_private_data
2019-11-29drm: Inline drm_color_lut_extract()Ville Syrjälä1-1/+23
This thing can get called several thousand times per LUT so seems like we want to inline it to: - avoid the function call overhead - allow constant folding A quick synthetic test (w/o any hardware interaction) with a ridiculously large LUT size shows about 50% reduction in runtime on my HSW and BSW boxes. Slightly less with more reasonable LUT size but still easily measurable in tens of microseconds. v2: Include drm_color_mgmt.h in the .rst (Daniel) Cc: Daniel Vetter <[email protected]> Signed-off-by: Ville Syrjälä <[email protected]> Reviewed-by: Nicholas Kazlauskas <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-11-28drm/selftests: Add drm_rect selftestsVille Syrjälä1-0/+2
Add selftests for drm_rect. A few basic ones for clipped and unclipped cases, and a few special ones for specific bugs we had in the code. I'm too lazy to think of more corner cases to check at this time. Maybe later. Signed-off-by: Ville Syrjälä <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected] Reviewed-by: Daniel Vetter <[email protected]> Reviewed-by: Benjamin Gaignard <[email protected]>
2019-11-28Merge branch 'vmwgfx-coherent' of ↵Dave Airlie1-0/+14
git://people.freedesktop.org/~thomash/linux into drm-next Graphics APIs like OpenGL 4.4 and Vulkan require the graphics driver to provide coherent graphics memory, meaning that the GPU sees any content written to the coherent memory on the next GPU operation that touches that memory, and the CPU sees any content written by the GPU to that memory immediately after any fence object trailing the GPU operation is signaled. Paravirtual drivers that otherwise require explicit synchronization needs to do this by hooking up dirty tracking to pagefault handlers and buffer object validation. Provide mm helpers needed for this and that also allow for huge pmd- and pud entries (patch 1-3), and the associated vmwgfx code (patch 4-7). The code has been tested and exercised by a tailored version of mesa where we disable all explicit synchronization and assume graphics memory is coherent. The performance loss varies of course; a typical number is around 5%. Signed-off-by: Dave Airlie <[email protected]> From: Thomas Hellstrom <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-11-27Merge tag 'drm-next-2019-11-27' of git://anongit.freedesktop.org/drm/drmLinus Torvalds36-555/+638
Pull drm updates from Dave Airlie: "Lots of stuff in here, though it hasn't been too insane this merge apart from dealing with the security fun. uapi: - export different colorspace properties on DP vs HDMI - new fourcc for ARM 16x16 block format - syncobj: allow querying last submitted timeline value - DRM_FORMAT_BIG_ENDIAN defined as unsigned core: - allow using gem vma manager in ttm - connector/encoder/bridge doc fixes - allow more than 3 encoders for a connector - displayport mst suspend/resume reprobing support - vram lazy unmapping, uniform vram mm and gem vram - edid cleanups + AVI informframe bar info - displayport helpers - dpcd parser added dp_cec: - Allow a connector to be associated with a cec device ttm: - pipelining with no_gpu_wait fix - always keep BOs on the LRU sched: - allow free_job routine to sleep i915: - Block userptr from mappable GTT - i915 perf uapi versioning - OA stream dynamic reconfiguration - make context persistence optional - introduce DRM_I915_UNSTABLE Kconfig - add fake lmem testing under unstable - BT.2020 support for DP MSA - struct mutex elimination - Tigerlake display/PLL/power management improvements - Jasper Lake PCH support - refactor PMU for multiple GPUs - Icelake firmware update - Split out vga + switcheroo code amdgpu: - implement dma-buf import/export without helpers - vega20 RAS enablement - DC i2c over aux fixes - renoir GPU reset - DC HDCP support - BACO support for CI/VI asics - MSI-X support - Arcturus EEPROM support - Arcturus VCN encode support - VCN dynamic powergating on RV/RV2 amdkfd: - add navi12/14/renoir support to kfd radeon: - SI dpm fix ported from amdgpu - fix bad DMA on ppc platforms gma500: - memory leak fixes qxl: - convert to new gem mmap exynos: - build warning fix komeda: - add aclk sysfs attribute v3d: - userspace cleanup uapi change i810: - fix for underflow in dispatch ioctls ast: - refactor show_cursor mgag200: - refactor show_cursor arcgpu: - encoder finding improvements mediatek: - mipi_tx, dsi and partial crtc support for MT8183 SoC - rotation support meson: - add suspend/resume support omap: - misc refactors tegra: - DisplayPort support for Tegra 210, 186 and 194. - IOMMU-backed DMA API fixes panfrost: - fix lockdep issue - simplify devfreq integration rcar-du: - R8A774B1 SoC support - fixes for H2 ES2.0 sun4i: - vcc-dsi regulator support virtio-gpu: - vmexit vs spinlock fix - move to gem shmem helpers - handle large command buffers with cma" * tag 'drm-next-2019-11-27' of git://anongit.freedesktop.org/drm/drm: (1855 commits) drm/amdgpu: invalidate mmhub semaphore workaround in gmc9/gmc10 drm/amdgpu: initialize vm_inv_eng0_sem for gfxhub and mmhub drm/amd/amdgpu/sriov skip RLCG s/r list for arcturus VF. drm/amd/amdgpu/sriov temporarily skip ras,dtm,hdcp for arcturus VF drm/amdgpu/gfx10: re-init clear state buffer after gpu reset merge fix for "ftrace: Rework event_create_dir()" drm/amdgpu: Update Arcturus golden registers drm/amdgpu/gfx10: fix out-of-bound mqd_backup array access drm/amdgpu/gfx10: explicitly wait for cp idle after halt/unhalt Revert "drm/amd/display: enable S/G for RAVEN chip" drm/amdgpu: disable gfxoff on original raven drm/amdgpu: remove experimental flag for Navi14 drm/amdgpu: disable gfxoff when using register read interface drm/amdgpu/powerplay: properly set PP_GFXOFF_MASK (v2) drm/amdgpu: fix bad DMA from INTERRUPT_CNTL2 drm/radeon: fix bad DMA from INTERRUPT_CNTL2 drm/amd/display: Fix debugfs on MST connectors drm/amdgpu/nv: add asic func for fetching vbios from rom directly drm/amdgpu: put flush_delayed_work at first drm/amdgpu/vcn2.5: fix the enc loop with hw fini ...
2019-11-27drm/vram: remove unused declarationGurchetan Singh1-1/+0
Commit b0e40e080522 ("vram: Have VRAM MM call GEM VRAM functions directly") removed this. Signed-off-by: Gurchetan Singh <[email protected]> Signed-off-by: Thomas Zimmermann <[email protected]> Reviewed-by: Thomas Zimmermann <[email protected]> Fixes: b0e40e080522 ("drm/vram: Have VRAM MM call GEM VRAM functions directly") Cc: Gerd Hoffmann <[email protected]> Cc: Dave Airlie <[email protected]> Cc: Maarten Lankhorst <[email protected]> Cc: Maxime Ripard <[email protected]> Cc: David Airlie <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: Hans de Goede <[email protected]> Cc: "Christian König" <[email protected]> Cc: Alex Deucher <[email protected]> Cc: Sam Ravnborg <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: [email protected] Cc: [email protected] Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-11-26Merge tag 'sound-5.5-rc1' of ↵Linus Torvalds1-0/+4
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound updates from Takashi Iwai: "There have been some significant changes in the core side, both for ALSA and ASoC, while lots of development have been seen in SOF, as well as many small fixes/improvements for ASoC codecs and platforms. Below is a highlight in this cycle: Core: - The unification of PCM vmalloc buffer allocation helpers into the standard API - Clean up of the default PCM mmap handling for vmalloc & SG-buffer - Fix potential races at ALSA timer open - A few new PCM API extensions; just preliminary core changes, the actual changes in drivers will be merged in 5.6 - Continued ASoC componentization works; now almost everything is a common ASoC component object. A lot of refactoring and simplification have been done along with it. ASoC: - Many fixes to the Sound Open Firmware (SOF) code - Wake on voice support for Chromebooks - SPI support and trigger word detection for RT5677 - New drivers for Analog Devices ADAU7118, Intel Cannonlake systems with RT1011 and RT5682, Texas Instruments TAS2562 and TAS2770 HD-audio: - Improved Intel DSP configuration / probe code for SOF - Plumbing the legacy HD-audio driver with Intel SOF HDMI - DP-MST support for Nvidia HDMI codecs - Realtek quirks cleanups and new additions as usual Others: - Lots of refactoring and cleanups for FireWire; period-size sharing, h/w IRQ interval configuration, clock recovery improvements, etc - USB-audio: Scarlett mixer quirks - Cleanups of PCM calls in various drivers (including media and USB) to adapt the core API changes" * tag 'sound-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (497 commits) ALSA: usb-audio: Fix Focusrite Scarlett 6i6 gen1 - input handling ALSA: hda/realtek - Enable internal speaker of ASUS UX431FLC ALSA: aloop: Fix dependency on timer API ASoC: DMI long name - avoid to add board name if matches with product name ASoC: improve the DMI long card code in asoc-core ASoC: rsnd: fix DALIGN register for SSIU ALSA: aloop: Avoid unexpected timer event callback tasklets ALSA: aloop: Remove redundant locking in timer open function ASoC: component: Add sync_stop PCM ops ASoC: pcm: Make ioctl ops optional ALSA: hda/hdmi - Clear codec->relaxed_resume flag at unbinding ALSA: hda - Disable audio component for legacy Nvidia HDMI codecs ALSA: cs4236: fix error return comparison of an unsigned integer ALSA: usb-audio: Fix NULL dereference at parsing BADD ALSA: usb-audio: Fix Scarlett 6i6 Gen 2 port data ALSA: hda/realtek - Enable the headset-mic on a Xiaomi's laptop ALSA: hda/realtek - Move some alc236 pintbls to fallback table ALSA: hda/realtek - Move some alc256 pintbls to fallback table ALSA: docs: Update about the new PCM sync_stop ops ALSA: pcm: Add card sync_irq field ...
2019-11-25Merge tag 'mips_5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linuxLinus Torvalds1-1/+1
Pull MIPS updates from Paul Burton: "The main MIPS changes for 5.5: - Atomics-related code sees some rework & cleanup, most notably allowing Loongson LL/SC errata workarounds to be more bulletproof & their correctness to be checked at build time. - Command line setup code is simplified somewhat, resolving various corner cases. - MIPS kernels can now be built with kcov code coverage support. - We can now build with CONFIG_FORTIFY_SOURCE=y. - Miscellaneous cleanups. And some platform specific changes: - We now disable some broken TLB functionality on certain Ingenic systems, and JZ4780 systems gain some devicetree nodes to support more devices. - Loongson support sees a number of cleanups, and we gain initial support for Loongson 3A R4 systems. - We gain support for MediaTek MT7688-based GARDENA Smart Gateway systems. - SGI IP27 (Origin 2*) see a number of fixes, cleanups & simplifications. - SGI IP30 (Octane) systems are now supported" * tag 'mips_5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (107 commits) MIPS: SGI-IP27: Enable ethernet phy on second Origin 200 module MIPS: PCI: Fix fake subdevice ID for IOC3 MIPS: Ingenic: Disable abandoned HPTLB function. MIPS: PCI: remember nasid changed by set interrupt affinity MIPS: SGI-IP27: Fix crash, when CPUs are disabled via nr_cpus parameter mips: add support for folded p4d page tables mips: drop __pXd_offset() macros that duplicate pXd_index() ones mips: fix build when "48 bits virtual memory" is enabled MIPS: math-emu: Reuse name array in debugfs_fpuemu() MIPS: allow building with kcov coverage MIPS: Loongson64: Drop setup_pcimap MIPS: Loongson2ef: Convert to early_printk_8250 MIPS: Drop CPU_SUPPORTS_UNCACHED_ACCELERATED MIPS: Loongson{2ef, 32, 64} convert to generic fw cmdline MIPS: Drop pmon.h MIPS: Loongson: Unify LOONGSON3/LOONGSON64 Kconfig usage MIPS: Loongson: Rename LOONGSON1 to LOONGSON32 MIPS: Loongson: Fix return value of loongson_hwmon_init MIPS: add support for SGI Octane (IP30) MIPS: PCI: make phys_to_dma/dma_to_phys for pci-xtalk-bridge common ...
2019-11-22Merge branch 'asoc-5.5' into asoc-nextMark Brown1-0/+4
2019-11-20Merge tag 'topic/drm-mipi-dsi-dsc-updates-2019-11-11' of ↵Jani Nikula1-0/+4
git://anongit.freedesktop.org/drm/drm-intel into drm-intel-next-queued Core Changes: - Update DSI data type and command definitions - Add helpers for sending compression mode and PPS packets Driver Changes: - Update tiny/st7586 to reflect a definition change Signed-off-by: Jani Nikula <[email protected]> From: Jani Nikula <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-11-20Merge tag 'topic/drm-mipi-dsi-dsc-updates-2019-11-11' of ↵Maarten Lankhorst1-0/+4
ssh://git.freedesktop.org/git/drm-intel into drm-misc-next Core Changes: - Update DSI data type and command definitions - Add helpers for sending compression mode and PPS packets Driver Changes: - Update tiny/st7586 to reflect a definition change Signed-off-by: Maarten Lankhorst <[email protected]> From: Jani Nikula <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-11-20drm/r128: make ATI PCI GART part of its only user, r128Jani Nikula1-31/+0
The ATI Rage 128 driver has been the only user of ATI PCI GART code since Radeon dropped UMS support in commit 8333f607a631 ("drm/radeon: remove UMS support"). Clean up the drm top level directory, Kconfig and Makefile by making ati_pcigart.[ch] part of r128. Drop the CONFIG_DRM_ATI_PCIGART config option made redundant by the change. This reduces drm.ko module size slightly when legacy drivers are enabled, and moves the baggage to r128.ko instead. Cc: Alex Deucher <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: Dave Airlie <[email protected]> Reviewed-by: Daniel Vetter <[email protected]> Reviewed-by: Alex Deucher <[email protected]> Signed-off-by: Jani Nikula <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-11-19drm/fb-helper: Remove drm_fb_helper_unlink_fbi()Thomas Zimmermann1-6/+0
There are no callers of drm_fb_helper_unlink_fbi() left. Remove the function. Signed-off-by: Thomas Zimmermann <[email protected]> Reviewed-by: Noralf Trønnes <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-11-15Merge drm/drm-next into drm-intel-next-queuedJani Nikula21-376/+332
Backmerge to get dfce90259d74 ("Backmerge i915 security patches from commit 'ea0b163b13ff' into drm-next") and thus 100d46bd72ec ("Merge Intel Gen8/Gen9 graphics fixes from Jon Bloomfield."). Signed-off-by: Jani Nikula <[email protected]>
2019-11-15Merge branch 'vmwgfx-next' of git://people.freedesktop.org/~thomash/linux ↵Dave Airlie1-1/+1
into drm-next Two minor cleanups / fixes for -next. Signed-off-by: Dave Airlie <[email protected]> From: =?UTF-8?q?Thomas=20Hellstr=C3=B6m=20=28VMware=29?= Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-11-14drm/print: group logging functions by prink or device basedJani Nikula1-61/+74
In preparation for adding struct drm_device based logging, group the existing functions by prink or struct device based logging. No functional changes. Reviewed-by: Rodrigo Vivi <[email protected]> Acked-by: Ville Syrjälä <[email protected]> Acked-by: Sean Paul <[email protected]> Signed-off-by: Jani Nikula <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/51c70d80e7dd06c49ba3be56fbb6ae70edddc102.1572258936.git.jani.nikula@intel.com
2019-11-14drm/print: convert debug category macros into an enumJani Nikula1-40/+61
Mostly for improved documentation, convert the debug category macros into an enum. Drop unused DRM_UT_NONE. Document previously undocumented categories. Reviewed-by: Joonas Lahtinen <[email protected]> Acked-by: Ville Syrjälä <[email protected]> Acked-by: Sean Paul <[email protected]> Signed-off-by: Jani Nikula <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/96582479e7829d92b89adb805f829e23043ca85c.1572258936.git.jani.nikula@intel.com
2019-11-14drm/print: underscore prefix functions that should be private to printJani Nikula1-11/+11
We don't want people calling the functions directly. No functional changes. Reviewed-by: Rodrigo Vivi <[email protected]> Acked-by: Ville Syrjälä <[email protected]> Acked-by: Sean Paul <[email protected]> Signed-off-by: Jani Nikula <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/6b236ed4d2e6d2987eaaeb9cb737f9c3699281cc.1572258936.git.jani.nikula@intel.com
2019-11-14drm/print: rename drm_debug to __drm_debug to discourage useJani Nikula1-2/+3
drm_debug_enabled() is the way to check. __drm_debug is now reserved for drm print code only. No functional changes. v2: Rebase on move unlikely() to drm_debug_enabled() Acked-by: Alex Deucher <[email protected]> Reviewed-by: Eric Engestrom <[email protected]> Acked-by: Ville Syrjälä <[email protected]> Acked-by: Sean Paul <[email protected]> Signed-off-by: Jani Nikula <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/840ff7292d1a39512bac2fcb1f45de9d50694bf1.1572258936.git.jani.nikula@intel.com
2019-11-14drm/ttm, drm/vmwgfx: Use a configuration option for the TTM dma page poolThomas Hellstrom1-1/+1
Drivers like vmwgfx may want to test whether the dma page pool is present or not. Since it's activated by default by TTM if compiled-in, define a hidden configuration option that the driver can test for. Cc: Christian König <[email protected]> Signed-off-by: Thomas Hellstrom <[email protected]> Reviewed-by: Christian König <[email protected]>
2019-11-14drm: Add a new helper drm_color_ctm_s31_32_to_qm_n()james qian wang (Arm Technology China)1-0/+1
Add a new helper function drm_color_ctm_s31_32_to_qm_n() for driver to convert S31.32 sign-magnitude to Qm.n 2's complement that supported by hardware. V4: Address Mihai, Daniel and Ilia's review comments. V5: Includes the sign bit in the value of m (Qm.n). V6: Allows m = 0 according to Mihail's comments. V7: Address Mihail's comments. V8: Use type 'u32' to replace 'uint32_t' V9: Rebase. Signed-off-by: james qian wang (Arm Technology China) <[email protected]> Reviewed-by: Mihail Atanassov <[email protected]> Reviewed-by: Daniel Vetter <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]