kernel/linux.git/drivers/gpu/drm/msm/msm_debugfs.c, branch v6.12.81

drm/msm: clean up fault injection usage

2024-09-02T03:43:33+00:00

With the proper stubs in place in linux/fault-inject.h, we can remove a bunch of conditional compilation for CONFIG_FAULT_INJECTION=n. Link: https://lkml.kernel.org/r/20240813121237.2382534-2-jani.nikula@intel.com Signed-off-by: Jani Nikula Reviewed-by: Thomas Hellström Reviewed-by: Himal Prasad Ghimiray Reviewed-by: Abhinav Kumar Cc: Akinobu Mita Cc: Rob Clark Cc: Dmitry Baryshkov Cc: Lucas De Marchi Cc: Rodrigo Vivi Signed-off-by: Andrew Morton

drm/msm: don't create GPU-related debugfs files with no GPU present

2023-11-21T02:31:42+00:00

If there is no GPU present, skip creation of the GPU-related debugfs files, making the MSM's debugfs more usable. Signed-off-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/561742/ Signed-off-by: Rob Clark

drm/msm: make fb debugfs file available only in KMS case

2023-10-09T18:42:36+00:00

Don't register the 'fb' debugfs file, if there is no KMS (and so no framebuffers). Reviewed-by: Rob Clark Signed-off-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/561650/ Signed-off-by: Rob Clark

drm/msm: only register 'kms' debug file if KMS is used

2023-10-09T18:42:36+00:00

There is little point in having the empty debugfs file which always returns -ENODEV. Change this file to be created only if KMS is actually used. Reviewed-by: Rob Clark Signed-off-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/561656/ Signed-off-by: Rob Clark

drm/msm: Remove unnecessary (void*) conversions

2023-06-04T02:23:39+00:00

Pointer variables of (void*) type do not require type cast. Signed-off-by: Su Hui Reviewed-by: Abhinav Kumar Patchwork: https://patchwork.freedesktop.org/patch/540599/ Link: https://lore.kernel.org/r/20230522013213.25876-1-suhui@nfschina.com Signed-off-by: Dmitry Baryshkov

drm/msm: Implement fbdev emulation as in-kernel client

2023-04-06T17:29:40+00:00

Move code from ad-hoc fbdev callbacks into DRM client functions and remove the old callbacks. The functions instruct the client to poll for changed output or restore the display. The DRM core calls both, the old callbacks and the new client helpers, from the same places. The new functions perform the same operation as before, so there's no change in functionality. Replace all code that initializes or releases fbdev emulation throughout the driver. Instead initialize the fbdev client by a single call to msm_fbdev_setup() after msm has registered its DRM device. As in most drivers, msm's fbdev emulation now acts like a regular DRM client. The fbdev client setup consists of the initial preparation and the hot-plugging of the display. The latter creates the fbdev device and sets up the fbdev framebuffer. The setup performs display hot-plugging once. If no display can be detected, DRM probe helpers re-run the detection on each hotplug event. A call to drm_dev_unregister() releases the client automatically. No further action is required within msm. If the fbdev framebuffer has been fully set up, struct fb_ops.fb_destroy implements the release. For partially initialized emulation, the fbdev client reverts the initial setup. v2: * handle fbdev module parameter correctly (kernel test robot) Signed-off-by: Thomas Zimmermann Reviewed-by: Dmitry Baryshkov Tested-by: Dmitry Baryshkov # RB5 Patchwork: https://patchwork.freedesktop.org/patch/530560/ Link: https://lore.kernel.org/r/20230403124538.8497-9-tzimmermann@suse.de Signed-off-by: Dmitry Baryshkov

drm/msm: Remove fbdev from struct msm_drm_private

2023-04-06T17:29:40+00:00

The DRM device stores a pointer to the fbdev helper. Remove struct msm_drm_private.fbdev, which contains the same value. No functional changes. v2: * test for fb_helper->fb in debugfs code Signed-off-by: Thomas Zimmermann Reviewed-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/530559/ Link: https://lore.kernel.org/r/20230403124538.8497-6-tzimmermann@suse.de Signed-off-by: Dmitry Baryshkov

drm/msm/gpu: Add devfreq tuning debugfs

2023-01-16T18:40:18+00:00

Make the handful of tuning knobs available visible via debugfs. v2: select DEVFREQ_GOV_SIMPLE_ONDEMAND because for some reason struct devfreq_simple_ondemand_data depends on this Signed-off-by: Rob Clark Patchwork: https://patchwork.freedesktop.org/patch/517784/ Link: https://lore.kernel.org/r/20230110231447.1939101-2-robdclark@gmail.com Reviewed-by: Chia-I Wu

drm/msm: Add fault-injection support

2022-08-28T15:32:11+00:00

Intended as a way to trigger error paths in mesa. Signed-off-by: Rob Clark Reviewed-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/496710/ Link: https://lore.kernel.org/r/20220807172848.2432845-1-robdclark@gmail.com

drm: Drop drm_framebuffer.h from drm_crtc.h

2022-06-20T20:53:55+00:00

drm_crtc.h has no need for drm_frambuffer.h, so don't include it. Avoids useless rebuilds of the entire universe when touching drm_framebuffer.h. Quite a few placs do currently depend on drm_framebuffer.h without actually including it directly. All of those need to be fixed up. v2: Fix up msm some more v2: Deal with ingenic and shmobile as well Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20220614095449.29311-1-ville.syrjala@linux.intel.com Acked-by: Sam Ravnborg Acked-by: Jani Nikula