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path: root/drivers/gpu/drm/ast/ast_cursor.c
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2021-02-17drm/ast: Inline ast cursor-update functions into modesetting codeThomas Zimmermann1-237/+0
The logic for cursor updates is now located in the cursor plane's modesetting code. A number of helper functions remain to modify the rsp registers and image. Signed-off-by: Thomas Zimmermann <[email protected]> Acked-by: Gerd Hoffmann <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2021-02-17drm/ast: Allocate HW cursor BOs during cursor-plane initializationThomas Zimmermann1-58/+0
The BOs are eventually released by the cursor plane's destroy callback. Signed-off-by: Thomas Zimmermann <[email protected]> Acked-by: Gerd Hoffmann <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2021-02-17drm/ast: Add constants for VGACRCB register bitsThomas Zimmermann1-6/+15
Set the bits in VGACRCB with constants. Alo move the rsp code into a helper function. Signed-off-by: Thomas Zimmermann <[email protected]> Acked-by: Gerd Hoffmann <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2020-12-11drm/ast: Only map cursor BOs during updatesThomas Zimmermann1-23/+28
The HW cursor's BO used to be mapped permanently into the kernel's address space. GEM's vmap operation will be protected by locks, and we don't want to lock the BO's for an indefinate period of time. Change the cursor code to map the HW BOs only during updates. The vmap operation in VRAM helpers is cheap, as a once estabished mapping is being reused until the BO actually moves. As the HW cursor BOs are permanently pinned, they never move at all. v2: * fix typos in commit description Signed-off-by: Thomas Zimmermann <[email protected]> Acked-by: Christian König <[email protected]> Acked-by: Daniel Vetter <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2020-12-11drm/ast: Don't pin cursor source BO explicitly during updateThomas Zimmermann1-9/+1
Vmapping the cursor source BO contains an implicit pin operation, so there's no need to do this manually. Signed-off-by: Thomas Zimmermann <[email protected]> Acked-by: Daniel Vetter <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2020-11-09drm/gem: Use struct dma_buf_map in GEM vmap ops and convert GEM backendsThomas Zimmermann1-14/+13
This patch replaces the vmap/vunmap's use of raw pointers in GEM object functions with instances of struct dma_buf_map. GEM backends are converted as well. For most of them, this simply changes the returned type. TTM-based drivers now return information about the location of the memory, either system or I/O memory. GEM VRAM helpers and qxl now use ttm_bo_vmap() et al. Amdgpu, nouveau and radeon use drm_gem_ttm_vmap() et al instead of implementing their own vmap callbacks. v7: * init QXL cursor to mapped BO buffer (kernel test robot) v5: * update vkms after switch to shmem v4: * use ttm_bo_vmap(), drm_gem_ttm_vmap(), et al. (Daniel, Christian) * fix a trailing { in drm_gem_vmap() * remove several empty functions instead of converting them (Daniel) * comment uses of raw pointers with a TODO (Daniel) * TODO list: convert more helpers to use struct dma_buf_map Signed-off-by: Thomas Zimmermann <[email protected]> Acked-by: Christian König <[email protected]> Tested-by: Sam Ravnborg <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2020-08-19drm: ast: fix double __iomem sparse warningRandy Dunlap1-1/+2
sparse complains about having 2 "__iomem" attributes on the same line where only one is needed since the first one applies to everything up to the ending ';'. However, to make it clear(er) that both of these pointers are "__iomem", use separate lines for them. ../drivers/gpu/drm/ast/ast_cursor.c:256:26: CK: warning: duplicate [noderef] ../drivers/gpu/drm/ast/ast_cursor.c:256:26: CK: error: multiple address space given: __iomem & __iomem Signed-off-by: Randy Dunlap <[email protected]> Reviewed-by: Thomas Zimmermann <[email protected]> Cc: Dave Airlie <[email protected]> Cc: David Airlie <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: [email protected] Signed-off-by: Thomas Zimmermann <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2020-08-03drm/ast: Embed struct drm_device in struct ast_privateThomas Zimmermann1-3/+3
Turns struct ast_private into a subclass of struct drm_device by embedding the latter. This allows for using DRM's managed device allocation. The use of struct drm_device.dev_private is deprecated. The patch converts the last remaining users to to_ast_private(). Signed-off-by: Thomas Zimmermann <[email protected]> Acked-by: Daniel Vetter <[email protected]> Acked-by: Sam Ravnborg <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2020-08-03drm/ast: Replace struct_drm_device.dev_private with to_ast_private()Thomas Zimmermann1-1/+1
The ast code still references dev_private in several place when looking up the ast device structure. Convert the remaining locations to use to_ast_private(). Signed-off-by: Thomas Zimmermann <[email protected]> Acked-by: Daniel Vetter <[email protected]> Acked-by: Sam Ravnborg <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2020-07-07drm/ast: Managed cursor releaseThomas Zimmermann1-16/+22
Register a release function to finalize cursors. The _fini() function gets un-exported from the source file. The function ast_mode_fini() is now empty and will be removed by a later patch. Signed-off-by: Thomas Zimmermann <[email protected]> Acked-by: Sam Ravnborg <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2020-07-07drm/ast: Keep cursor HW BOs mappedThomas Zimmermann1-26/+18
Updating the image in a cursor's HW BO requires a mapping of the BO's buffer in the kernel's address space. Cursor image updates can happen frequently and create CPU overhead. As cursor HW BOs are small and never move, they are now map exactly once during the initialization and the mapping is used throughout the driver's lifetime. This change also removes a possible source of failures from ast_cursor_show(). As the helper does not establish mappings, it cannot fail. As a result, the cursor plane's atomic-update helper does not call any failable interfaces. All failures are detected before trying to update the cursor plane. Signed-off-by: Thomas Zimmermann <[email protected]> Acked-by: Sam Ravnborg <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2020-07-07drm/ast: Add helper to hide cursorThomas Zimmermann1-0/+5
As the inverse to ast_cursor_show(), ast_cursor_hide() disables the HW cursor. Signed-off-by: Thomas Zimmermann <[email protected]> Acked-by: Sam Ravnborg <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2020-07-07drm/ast: Replace ast_cursor_move() with ast_cursor_show()Thomas Zimmermann1-15/+27
Having a cursor move function is misleading, as it actually enables the cursor's image for displaying. So rename it to ast_cursor_show(). It's semantics is to show a cursor at the specified location on the screen. The displayed cursor is always the image in the cursor front BO. This change also simplifies struct ast_crtc to being a mere wrapper around around struct drm_crtc. It will be removed by a later patch. Signed-off-by: Thomas Zimmermann <[email protected]> Acked-by: Sam Ravnborg <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2020-07-07drm/ast: Move cursor pageflip into helperThomas Zimmermann1-1/+19
The new helper ast_cursor_page_flip() switches the cursor's front and back BOs. This simplifies the cursor plane's update helper. Signed-off-by: Thomas Zimmermann <[email protected]> Acked-by: Sam Ravnborg <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2020-07-07drm/ast: Update cursor image and checksum from same functionThomas Zimmermann1-19/+5
Cursor image and checksum go hand in hand. Update both in the same place. The helper cannot fail, so remove the return type. Signed-off-by: Thomas Zimmermann <[email protected]> Acked-by: Sam Ravnborg <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2020-07-07drm/ast: Move cursor fb pinning and mapping into helperThomas Zimmermann1-2/+55
The new helper ast_cursor_blit() updates a cursor's backbuffer HW BO from a framebuffer structure. The cursor plane's prepare_fb() function now uses the new interface. Pinning and mapping of BOs is done automatically by the helper. This includes the source BO, which was not pinned by the original code in prepare_fb(). Signed-off-by: Thomas Zimmermann <[email protected]> Acked-by: Sam Ravnborg <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2020-07-07drm/ast: Pass struct ast_private instance to cursor init/fini functionsThomas Zimmermann1-4/+3
Removes some typecasting. v2: * use to_ast_private() instead of struct drm_device.dev_private Signed-off-by: Thomas Zimmermann <[email protected]> Acked-by: Sam Ravnborg <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2020-07-07drm/ast: Move cursor functions to ast_cursor.cThomas Zimmermann1-0/+218
The cursor manipulation functions are unrelated to modesetting. Move them into their own file. Signed-off-by: Thomas Zimmermann <[email protected]> Acked-by: Sam Ravnborg <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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