Move the logic to get the plane formats depending on the plane type to its own function. Refactor, no functional changes.
Signed-off-by: José Expósito jose.exposito89@gmail.com --- drivers/gpu/drm/vkms/vkms_plane.c | 37 ++++++++++++++++--------------- 1 file changed, 19 insertions(+), 18 deletions(-)
diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c index 32409e15244b..76a06dd92ac1 100644 --- a/drivers/gpu/drm/vkms/vkms_plane.c +++ b/drivers/gpu/drm/vkms/vkms_plane.c @@ -83,6 +83,23 @@ static void vkms_plane_reset(struct drm_plane *plane) __drm_gem_reset_shadow_plane(plane, &vkms_state->base); }
+static void vkms_formats_for_plane_type(enum drm_plane_type type, + const u32 **formats, int *nformats) +{ + switch (type) { + case DRM_PLANE_TYPE_CURSOR: + case DRM_PLANE_TYPE_OVERLAY: + *formats = vkms_plane_formats; + *nformats = ARRAY_SIZE(vkms_plane_formats); + break; + case DRM_PLANE_TYPE_PRIMARY: + default: + *formats = vkms_formats; + *nformats = ARRAY_SIZE(vkms_formats); + break; + } +} + static const struct drm_plane_funcs vkms_plane_funcs = { .update_plane = drm_atomic_helper_update_plane, .disable_plane = drm_atomic_helper_disable_plane, @@ -167,24 +184,8 @@ struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev, const u32 *formats; int nformats;
- switch (type) { - case DRM_PLANE_TYPE_PRIMARY: - formats = vkms_formats; - nformats = ARRAY_SIZE(vkms_formats); - funcs = &vkms_primary_helper_funcs; - break; - case DRM_PLANE_TYPE_CURSOR: - case DRM_PLANE_TYPE_OVERLAY: - formats = vkms_plane_formats; - nformats = ARRAY_SIZE(vkms_plane_formats); - funcs = &vkms_primary_helper_funcs; - break; - default: - formats = vkms_formats; - nformats = ARRAY_SIZE(vkms_formats); - funcs = &vkms_primary_helper_funcs; - break; - } + funcs = &vkms_primary_helper_funcs; + vkms_formats_for_plane_type(type, &formats, &nformats);
plane = drmm_universal_plane_alloc(dev, struct vkms_plane, base, 1 << index, &vkms_plane_funcs,
Where no modifiers are exposed, usually linear modifier is assumed. However, userspace code is starting to expect IN_FORMATS even when the only supported modifiers are linear [1].
To avoid possible issues, explicitly set the DRM_FORMAT_MOD_LINEAR modifier.
[1] https://gitlab.freedesktop.org/wayland/weston/-/merge_requests/599/diffs?com...
Suggested-by: Chris Healy cphealy@gmail.com Signed-off-by: José Expósito jose.exposito89@gmail.com
---
v2: Implement format_mod_supported (Simon Ser) --- drivers/gpu/drm/vkms/vkms_plane.c | 34 ++++++++++++++++++++++++++++++- 1 file changed, 33 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c index 76a06dd92ac1..7e0d021494c3 100644 --- a/drivers/gpu/drm/vkms/vkms_plane.c +++ b/drivers/gpu/drm/vkms/vkms_plane.c @@ -20,6 +20,11 @@ static const u32 vkms_plane_formats[] = { DRM_FORMAT_XRGB8888 };
+static const u64 vkms_plane_modifiers[] = { + DRM_FORMAT_MOD_LINEAR, + DRM_FORMAT_MOD_INVALID +}; + static struct drm_plane_state * vkms_plane_duplicate_state(struct drm_plane *plane) { @@ -100,12 +105,39 @@ static void vkms_formats_for_plane_type(enum drm_plane_type type, } }
+static bool vkms_format_mod_supported(struct drm_plane *plane, u32 format, + u64 modifier) +{ + bool modifier_found = false; + unsigned int i; + const u32 *formats; + int nformats; + + for (i = 0; i < ARRAY_SIZE(vkms_plane_modifiers) - 1; i++) { + if (vkms_plane_modifiers[i] == modifier) + modifier_found = true; + } + + if (!modifier_found) + return false; + + vkms_formats_for_plane_type(plane->type, &formats, &nformats); + + for (i = 0; i < nformats; i++) { + if (formats[i] == format) + return true; + } + + return false; +} + static const struct drm_plane_funcs vkms_plane_funcs = { .update_plane = drm_atomic_helper_update_plane, .disable_plane = drm_atomic_helper_disable_plane, .reset = vkms_plane_reset, .atomic_duplicate_state = vkms_plane_duplicate_state, .atomic_destroy_state = vkms_plane_destroy_state, + .format_mod_supported = vkms_format_mod_supported, };
static void vkms_plane_atomic_update(struct drm_plane *plane, @@ -190,7 +222,7 @@ struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev, plane = drmm_universal_plane_alloc(dev, struct vkms_plane, base, 1 << index, &vkms_plane_funcs, formats, nformats, - NULL, type, NULL); + vkms_plane_modifiers, type, NULL); if (IS_ERR(plane)) return plane;
Overall looks good, but it is a bit repetitive to copy & paste this in all drivers. It'd be nice to provide a core helper to do this, and then drivers can just set format_mod_supported to the helper if they don't have more involved logic. Thoughts?
See drm_plane_check_pixel_format, where the logic is already implemented.
Alternatively… We can just support a missing format_mod_supported in create_in_format_blob. This sounds like this was the original intention of db1689aa61bd ("drm: Create a format/modifier blob") and drm_plane_check_pixel_format.
dri-devel@lists.freedesktop.org
-
José Expósito -
Simon Ser