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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2023-10-09 17:06:36 +0300 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2023-11-14 12:17:23 +0300 |
| commit | c669875041d038e91fa99766a07ec2d8bd6dcf6a (patch) | |
| tree | 6f50182ffe04032ff077415f42496cbb45c7c709 /drivers/gpu/drm/solomon | |
| parent | e7c814d305e110d6db3f440d14490a8d0d9477d9 (diff) | |
| download | linux-c669875041d038e91fa99766a07ec2d8bd6dcf6a.tar.xz | |
drm/ssd130x: Preallocate format-conversion buffer in atomic_check
Preallocate the format-conversion state's storage in the plane's
atomic_check function if a format conversion is necessary. Allows
the update to fail if no memory is available. Avoids the same
allocation within atomic_update, which may not fail.
v6:
* update patch for ssd132x support
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Tested-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231009141018.11291-8-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu/drm/solomon')
| -rw-r--r-- | drivers/gpu/drm/solomon/ssd130x.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/gpu/drm/solomon/ssd130x.c b/drivers/gpu/drm/solomon/ssd130x.c index ee0a06c50692..bef293922b98 100644 --- a/drivers/gpu/drm/solomon/ssd130x.c +++ b/drivers/gpu/drm/solomon/ssd130x.c @@ -873,6 +873,7 @@ static int ssd130x_primary_plane_atomic_check(struct drm_plane *plane, struct ssd130x_device *ssd130x = drm_to_ssd130x(drm); struct drm_plane_state *plane_state = drm_atomic_get_new_plane_state(state, plane); struct ssd130x_plane_state *ssd130x_state = to_ssd130x_plane_state(plane_state); + struct drm_shadow_plane_state *shadow_plane_state = &ssd130x_state->base; struct drm_crtc *crtc = plane_state->crtc; struct drm_crtc_state *crtc_state = NULL; const struct drm_format_info *fi; @@ -897,6 +898,16 @@ static int ssd130x_primary_plane_atomic_check(struct drm_plane *plane, pitch = drm_format_info_min_pitch(fi, 0, ssd130x->width); + if (plane_state->fb->format != fi) { + void *buf; + + /* format conversion necessary; reserve buffer */ + buf = drm_format_conv_state_reserve(&shadow_plane_state->fmtcnv_state, + pitch, GFP_KERNEL); + if (!buf) + return -ENOMEM; + } + ssd130x_state->buffer = kcalloc(pitch, ssd130x->height, GFP_KERNEL); if (!ssd130x_state->buffer) return -ENOMEM; @@ -911,6 +922,7 @@ static int ssd132x_primary_plane_atomic_check(struct drm_plane *plane, struct ssd130x_device *ssd130x = drm_to_ssd130x(drm); struct drm_plane_state *plane_state = drm_atomic_get_new_plane_state(state, plane); struct ssd130x_plane_state *ssd130x_state = to_ssd130x_plane_state(plane_state); + struct drm_shadow_plane_state *shadow_plane_state = &ssd130x_state->base; struct drm_crtc *crtc = plane_state->crtc; struct drm_crtc_state *crtc_state = NULL; const struct drm_format_info *fi; @@ -935,6 +947,16 @@ static int ssd132x_primary_plane_atomic_check(struct drm_plane *plane, pitch = drm_format_info_min_pitch(fi, 0, ssd130x->width); + if (plane_state->fb->format != fi) { + void *buf; + + /* format conversion necessary; reserve buffer */ + buf = drm_format_conv_state_reserve(&shadow_plane_state->fmtcnv_state, + pitch, GFP_KERNEL); + if (!buf) + return -ENOMEM; + } + ssd130x_state->buffer = kcalloc(pitch, ssd130x->height, GFP_KERNEL); if (!ssd130x_state->buffer) return -ENOMEM; |