On planes which support AFBC, expose an AFBC modifier for use with BGR888.
Signed-off-by: Ayan Kumar halder <ayan.hal...@arm.com>
Reviewed-by: Brian Starkey <brian.star...@arm.com>
Reviewed-by: Liviu Dudau <liviu.du...@arm.com>
Changes from v2:
- Removed the gerrit change-id
- Replaced DRM_ERROR() with DRM_DEBUG_KMS() in malidp_format_mod_supported()
to report unsupported modifiers.
---
drivers/gpu/drm/arm/malidp_drv.c | 1 +
drivers/gpu/drm/arm/malidp_planes.c | 46 +++++++++++++++++++++++++++++++++++--
2 files changed, 45 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c
index 262a830..4f6e52e 100644
--- a/drivers/gpu/drm/arm/malidp_drv.c
+++ b/drivers/gpu/drm/arm/malidp_drv.c
@@ -392,6 +392,7 @@ static int malidp_init(struct drm_device *drm)
drm->mode_config.max_height = hwdev->max_line_size;
drm->mode_config.funcs = &malidp_mode_config_funcs;
drm->mode_config.helper_private = &malidp_mode_config_helpers;
+ drm->mode_config.allow_fb_modifiers = true;
ret = malidp_crtc_init(drm);
if (ret) {
diff --git a/drivers/gpu/drm/arm/malidp_planes.c
b/drivers/gpu/drm/arm/malidp_planes.c
index 0122091..605c5ae 100644
--- a/drivers/gpu/drm/arm/malidp_planes.c
+++ b/drivers/gpu/drm/arm/malidp_planes.c
@@ -124,6 +124,35 @@ static void malidp_plane_atomic_print_state(struct
drm_printer *p,
drm_printf(p, "\tn_planes=%u\n", ms->n_planes);
}
+static bool malidp_format_mod_supported(struct drm_plane *plane,
+ u32 format, u64 modifier)
+{
+ if (WARN_ON(modifier == DRM_FORMAT_MOD_INVALID))
+ return false;
+
+ /* All the pixel formats are supported without any modifier */
+ if (modifier == DRM_FORMAT_MOD_LINEAR)
+ return true;
+
+ if ((modifier >> 56) != DRM_FORMAT_MOD_VENDOR_ARM)
+ return false;
+
+ if (modifier &
+ ~DRM_FORMAT_MOD_ARM_AFBC(AFBC_MOD_VALID_BITS)) {
+ DRM_DEBUG_KMS("Unsupported modifiers\n");
+ return false;
+ }
+
+ switch (modifier) {
+ case DRM_FORMAT_MOD_ARM_AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_16x16 |
+ AFBC_FORMAT_MOD_YTR |
+ AFBC_FORMAT_MOD_SPARSE):
+ if (format == DRM_FORMAT_BGR888)
+ return true;
+ }
+ return false;
+}
+
static const struct drm_plane_funcs malidp_de_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
@@ -132,6 +161,7 @@ static const struct drm_plane_funcs malidp_de_plane_funcs =
{
.atomic_duplicate_state = malidp_duplicate_plane_state,
.atomic_destroy_state = malidp_destroy_plane_state,
.atomic_print_state = malidp_plane_atomic_print_state,
+ .format_mod_supported = malidp_format_mod_supported,
};
static int malidp_se_check_scaling(struct malidp_plane *mp,
@@ -526,6 +556,13 @@ int malidp_de_planes_init(struct drm_device *drm)
u32 *formats;
int ret, i, j, n;
+ static const u64 modifiers[] = {
+ DRM_FORMAT_MOD_ARM_AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_16x16 |
+ AFBC_FORMAT_MOD_YTR | AFBC_FORMAT_MOD_SPARSE),
+ DRM_FORMAT_MOD_LINEAR,
+ DRM_FORMAT_MOD_INVALID
+ };
+
formats = kcalloc(map->n_pixel_formats, sizeof(*formats), GFP_KERNEL);
if (!formats) {
ret = -ENOMEM;
@@ -549,9 +586,14 @@ int malidp_de_planes_init(struct drm_device *drm)
plane_type = (i == 0) ? DRM_PLANE_TYPE_PRIMARY :
DRM_PLANE_TYPE_OVERLAY;
+
+ /*
+ * All the layers except smart layer supports AFBC modifiers.
+ */
ret = drm_universal_plane_init(drm, &plane->base, crtcs,
- &malidp_de_plane_funcs, formats,
- n, NULL, plane_type, NULL);
+ &malidp_de_plane_funcs, formats, n,
+ (id == DE_SMART) ? NULL : modifiers,
plane_type, NULL);
+
if (ret < 0)
goto cleanup;
--
2.7.4
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