diff options
| author | Thomas Zimmermann <tzimmermann@suse.de> | 2023-04-03 14:45:38 +0200 |
|---|---|---|
| committer | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2023-04-06 20:29:40 +0300 |
| commit | 940b869c2f2fb75696d7a3104b23caac9d5da841 (patch) | |
| tree | f8064a2cbcf9715c590d825361d4600b8c228fa3 /drivers/gpu/drm/msm/msm_drv.c | |
| parent | 841ef552b1410f9a6aa5f399ce794c3b0d6b6559 (diff) | |
drm/msm: Implement fbdev emulation as in-kernel client
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 <tzimmermann@suse.de>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> # 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 <dmitry.baryshkov@linaro.org>
Diffstat (limited to 'drivers/gpu/drm/msm/msm_drv.c')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_drv.c | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 2062b06f6037..29ba4bfda24b 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -58,7 +58,6 @@ static void msm_deinit_vram(struct drm_device *ddev); static const struct drm_mode_config_funcs mode_config_funcs = { .fb_create = msm_framebuffer_create, - .output_poll_changed = drm_fb_helper_output_poll_changed, .atomic_check = drm_atomic_helper_check, .atomic_commit = drm_atomic_helper_commit, }; @@ -236,11 +235,6 @@ static int msm_drm_uninit(struct device *dev) msm_perf_debugfs_cleanup(priv); msm_rd_debugfs_cleanup(priv); -#ifdef CONFIG_DRM_FBDEV_EMULATION - if (ddev->fb_helper) - msm_fbdev_free(ddev); -#endif - if (kms) msm_disp_snapshot_destroy(ddev); @@ -543,17 +537,15 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv) } drm_mode_config_reset(ddev); -#ifdef CONFIG_DRM_FBDEV_EMULATION - if (kms) - msm_fbdev_init(ddev); -#endif - ret = msm_debugfs_late_init(ddev); if (ret) goto err_msm_uninit; drm_kms_helper_poll_init(ddev); + if (kms) + msm_fbdev_setup(ddev); + return 0; err_msm_uninit: @@ -1092,7 +1084,6 @@ static const struct drm_driver msm_driver = { DRIVER_SYNCOBJ, .open = msm_open, .postclose = msm_postclose, - .lastclose = drm_fb_helper_lastclose, .dumb_create = msm_gem_dumb_create, .dumb_map_offset = msm_gem_dumb_map_offset, .prime_handle_to_fd = drm_gem_prime_handle_to_fd, |