On planes which support AFBC, expose an AFBC modifier for use with BGR888.
Signed-off-by: Ayan Kumar halder ayan.halder@arm.com Reviewed-by: Brian Starkey brian.starkey@arm.com Reviewed-by: Liviu Dudau liviu.dudau@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;