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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2022-11-03 16:14:46 +0100 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2022-11-05 17:12:04 +0100 |
| commit | 78a77c9f494829089d74afc60286c555efa0646a (patch) | |
| tree | 85a799e90685006a7d408f6f5381556e22428324 /drivers/gpu/drm/drm_fb_helper.c | |
| parent | 45b64fd9f7ae2cce27f85f7f0a7b1fcdd08d06b4 (diff) | |
| download | linux-78a77c9f494829089d74afc60286c555efa0646a.tar.gz linux-78a77c9f494829089d74afc60286c555efa0646a.tar.bz2 linux-78a77c9f494829089d74afc60286c555efa0646a.zip | |
drm/fb-helper: Clarify use of last_close and output_poll_changed
Clarify documentation in the use of struct drm_driver.last_close and
struct drm_mode_config_funcs.output_poll_changed. Those callbacks should
not be said for fbdev implementations on top of struct drm_client_funcs.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221103151446.2638-24-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu/drm/drm_fb_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_fb_helper.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 5eb2f0d4bf8d..e0384f967c0b 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -89,11 +89,13 @@ static DEFINE_MUTEX(kernel_fb_helper_lock); * It will automatically set up deferred I/O if the driver requires a shadow * buffer. * - * At runtime drivers should restore the fbdev console by using + * Existing fbdev implementations should restore the fbdev console by using * drm_fb_helper_lastclose() as their &drm_driver.lastclose callback. * They should also notify the fb helper code from updates to the output * configuration by using drm_fb_helper_output_poll_changed() as their - * &drm_mode_config_funcs.output_poll_changed callback. + * &drm_mode_config_funcs.output_poll_changed callback. New implementations + * of fbdev should be build on top of struct &drm_client_funcs, which handles + * this automatically. Setting the old callbacks should be avoided. * * For suspend/resume consider using drm_mode_config_helper_suspend() and * drm_mode_config_helper_resume() which takes care of fbdev as well. |