kernel/linux.git/drivers/gpu/drm/ast, branch v6.11.8

drm/ast: astdp: Wake up during connector status detection

2024-07-30T08:17:14+00:00

Power up the ASTDP connector for connection status detection if the connector is not active. Keep it powered if a display is attached. This fixes a bug where the connector does not come back after disconnecting the display. The encoder's atomic_disable turns off power on the physical connector. Further HPD reads will fail, thus preventing the driver from detecting re-connected displays. For connectors that are actively used, only test the HPD flag without touching power. Fixes: f81bb0ac7872 ("drm/ast: report connection status on Display Port.") Cc: Jocelyn Falempe Cc: Thomas Zimmermann Cc: Dave Airlie Cc: dri-devel@lists.freedesktop.org Cc: # v6.6+ Signed-off-by: Thomas Zimmermann Reviewed-by: Jocelyn Falempe Link: https://patchwork.freedesktop.org/patch/msgid/20240717143319.104012-2-tzimmermann@suse.de

Merge drm/drm-fixes into drm-misc-fixes

2024-07-30T07:09:23+00:00

Let's start the new drm-misc-fixes cycle by bringing in 6.11-rc1. Signed-off-by: Maxime Ripard

drm/ast: Fix black screen after resume

2024-07-19T07:09:17+00:00

Suspend will disable pcie device. Thus, resume should do full hw initialization again. Add some APIs to ast_drm_thaw() before ast_post_gpu() to fix the issue. v2: - fix function-call arguments Fixes: 5b71707dd13c ("drm/ast: Enable and unlock device access early during init") Reported-by: Cary Garrett Closes: https://lore.kernel.org/dri-devel/8ce1e1cc351153a890b65e62fed93b54ccd43f6a.camel@gmail.com/ Cc: Thomas Zimmermann Cc: Jocelyn Falempe Cc: Dave Airlie Cc: dri-devel@lists.freedesktop.org Cc: # v6.6+ Signed-off-by: Jammy Huang Reviewed-by: Thomas Zimmermann Signed-off-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/20240718030352.654155-1-jammy_huang@aspeedtech.com

drm/ast: Use drm_atomic_helper_commit_tail() helper

2024-07-03T07:38:23+00:00

Ast has no special requirements for runtime power management. So replace drm_atomic_helper_commit_tail_rpm() with the regular helper drm_atomic_helper_commit_tail(). Signed-off-by: Thomas Zimmermann Reviewed-by: Jocelyn Falempe Link: https://patchwork.freedesktop.org/patch/msgid/20240627153638.8765-9-tzimmermann@suse.de

drm/ast: Inline ast_crtc_dpms() into callers

2024-07-03T07:38:23+00:00

The function ast_crtc_dpms() is left over from when the ast driver did not implement atomic modesetting. But DPMS is not supported by atomic modesetting and the helper is only called to enable or disable the CRTC sync pulses. Inline the function into its callers. To disable the CRTC, ast sets (AST_DPMS_VSYNC_OFF | AST_DPMS_HSYNC_OFF) in VGACRB6. Replace the constants with the correct register constants for VGACRB6. Signed-off-by: Thomas Zimmermann Reviewed-by: Jocelyn Falempe Link: https://patchwork.freedesktop.org/patch/msgid/20240627153638.8765-8-tzimmermann@suse.de

drm/ast: Only set VGA SCREEN_DISABLE bit in CRTC code

2024-07-03T07:38:23+00:00

The SCREEN_DISABLE bit controls scanout from display memory. The bit affects all planes, so set it only in the CRTC's atomic enable and disable functions. A number of bugs affect this fix. First of all, ast_set_std_regs() tries to set VGASR1 except for the SD bit. But the read bitmask is invert, so it preserves anything except the SD bit. Fix this by re-inverting the read mask. The second issue is that primary-plane and CRTC helpers modify the SD bit. The bit controls scanout for all planes, primary and HW cursor, so set it only in the CRTC code. Further add a constant to represent the SD bit in VGASR1. Keep the plane's atomic_disable around to make the DRM framework happy. v2: - fix typos in commit message Signed-off-by: Thomas Zimmermann Reviewed-by: Jocelyn Falempe Link: https://patchwork.freedesktop.org/patch/msgid/20240627153638.8765-7-tzimmermann@suse.de

drm/ast: Remove gamma LUT updates from DPMS code

2024-07-03T07:38:23+00:00

The DPMS code, called from the CRTC's atomic_enable, rewrites the gamma LUT. This is already done by the CRTC's atomic_flush. Remove the duplication. v2: - fix a typo in commit message Signed-off-by: Thomas Zimmermann Reviewed-by: Jocelyn Falempe Link: https://patchwork.freedesktop.org/patch/msgid/20240627153638.8765-6-tzimmermann@suse.de

drm/ast: Handle primary-plane format setup in atomic_update

2024-07-03T07:38:16+00:00

Several color registers are programmed in the DPMS code of the CRTC's atomic_enable helper and the primary plane's atomic_update. It requires the color format and the display mode. Both code paths handle different cases: the DPMS's code will not be executed if the color format changes without a full mode switch. The plane's code only runs if the color format changes, but ignores display-mode changes. The color format is a property of the primary plane, so consolidate all color-format code in the plane's atomic_update. Remove it from the DPMS helper. v2: - clarify commit message (Jocelyn) Signed-off-by: Thomas Zimmermann Reviewed-by: Jocelyn Falempe Link: https://patchwork.freedesktop.org/patch/msgid/20240627153638.8765-5-tzimmermann@suse.de

drm/ast: Move mode-setting code into mode_set_nofb CRTC helper

2024-07-03T07:38:13+00:00

Do all mode setting in ast_crtc_helper_mode_set_nofb(), which always runs after disabling the CRTC and before programming the planes. Removes implicit synchronization between the CRTC's atomic disable, enable and the vertical retrace. Display-mode updates require HW cursors to be disabled. The HW cursor only picks up changes at vertical retrace periods. So the CRTC's atomic_disable helper waited for the retrace to delay any following mode-setting operations, which then happened in atomic_enable. See [1] for a description of the problem. With the CRTC helper callback mode_set_nofb, we can now synchronize and reprogram in the same place. As it always runs before the plane update, the plane code can be reordered with the CRTC's later atomic_enable et al. Signed-off-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/series/79914/ # 1 Reviewed-by: Jocelyn Falempe Link: https://patchwork.freedesktop.org/patch/msgid/20240627153638.8765-4-tzimmermann@suse.de

drm/ast: Program mode for AST DP in atomic_mode_set

2024-07-03T07:38:09+00:00

The CRTC's atomic_flush function contains code to program the display mode to the AST DP chip. Move the code to the encoder's atomic_mode_set callback. The DRM atomic-modesetting code invoke this callback as part of the atomic commit. v2: - fix typos in commit message Signed-off-by: Thomas Zimmermann Reviewed-by: Jocelyn Falempe Link: https://patchwork.freedesktop.org/patch/msgid/20240627153638.8765-3-tzimmermann@suse.de