diff --git a/drivers/gpu/drm/drm_modeset_helper.c b/drivers/gpu/drm/drm_modeset_helper.c index 758070996d51..81f304a2187a 100644 --- a/drivers/gpu/drm/drm_modeset_helper.c +++ b/drivers/gpu/drm/drm_modeset_helper.c @@ -118,6 +118,7 @@ static struct drm_plane *create_primary_plane(struct drm_device *dev) &drm_primary_helper_funcs, safe_modeset_formats, ARRAY_SIZE(safe_modeset_formats), + NULL, DRM_PLANE_TYPE_PRIMARY, NULL); if (ret) { kfree(primary); diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c index 3957ef8f026b..0ab477acd7a5 100644 --- a/drivers/gpu/drm/drm_plane.c +++ b/drivers/gpu/drm/drm_plane.c @@ -70,6 +70,8 @@ static unsigned int drm_num_planes(struct drm_device *dev) * @funcs: callbacks for the new plane * @formats: array of supported formats (DRM_FORMAT\_\*) * @format_count: number of elements in @formats + * @format_modifiers: array of struct drm_format modifiers terminated by + * DRM_FORMAT_MOD_INVALID * @type: type of plane (overlay, primary, cursor) * @name: printf style format string for the plane name, or NULL for default name * @@ -82,10 +84,12 @@ int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane, unsigned long possible_crtcs, const struct drm_plane_funcs *funcs, const uint32_t *formats, unsigned int format_count, + const uint64_t *format_modifiers, enum drm_plane_type type, const char *name, ...) { struct drm_mode_config *config = &dev->mode_config; + unsigned int format_modifier_count = 0; int ret; ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE); @@ -105,6 +109,31 @@ int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane, return -ENOMEM; } + /* + * First driver to need more than 64 formats needs to fix this. Each + * format is encoded as a bit and the current code only supports a u64. + */ + if (WARN_ON(format_count > 64)) + return -EINVAL; + + if (format_modifiers) { + const uint64_t *temp_modifiers = format_modifiers; + while (*temp_modifiers++ != DRM_FORMAT_MOD_INVALID) + format_modifier_count++; + } + + plane->modifier_count = format_modifier_count; + plane->modifiers = kmalloc_array(format_modifier_count, + sizeof(format_modifiers[0]), + GFP_KERNEL); + + if (format_modifier_count && !plane->modifiers) { + DRM_DEBUG_KMS("out of memory when allocating plane\n"); + kfree(plane->format_types); + drm_mode_object_unregister(dev, &plane->base); + return -ENOMEM; + } + if (name) { va_list ap; @@ -117,12 +146,15 @@ int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane, } if (!plane->name) { kfree(plane->format_types); + kfree(plane->modifiers); drm_mode_object_unregister(dev, &plane->base); return -ENOMEM; } memcpy(plane->format_types, formats, format_count * sizeof(uint32_t)); plane->format_count = format_count; + memcpy(plane->modifiers, format_modifiers, + format_modifier_count * sizeof(format_modifiers[0])); plane->possible_crtcs = possible_crtcs; plane->type = type; @@ -205,7 +237,8 @@ int drm_plane_init(struct drm_device *dev, struct drm_plane *plane, type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY; return drm_universal_plane_init(dev, plane, possible_crtcs, funcs, - formats, format_count, type, NULL); + formats, format_count, + NULL, type, NULL); } EXPORT_SYMBOL(drm_plane_init); @@ -223,6 +256,7 @@ void drm_plane_cleanup(struct drm_plane *plane) drm_modeset_lock_all(dev); kfree(plane->format_types); + kfree(plane->modifiers); drm_mode_object_unregister(dev, &plane->base); BUG_ON(list_empty(&plane->head)); diff --git a/drivers/gpu/drm/drm_simple_kms_helper.c b/drivers/gpu/drm/drm_simple_kms_helper.c index 7bae08c2bf0a..83ce9bf35149 100644 --- a/drivers/gpu/drm/drm_simple_kms_helper.c +++ b/drivers/gpu/drm/drm_simple_kms_helper.c @@ -212,6 +212,7 @@ EXPORT_SYMBOL(drm_simple_display_pipe_detach_bridge); * @funcs: callbacks for the display pipe (optional) * @formats: array of supported formats (DRM_FORMAT\_\*) * @format_count: number of elements in @formats + * @format_modifiers: array of formats modifiers * @connector: connector to attach and register (optional) * * Sets up a display pipeline which consist of a really simple @@ -232,6 +233,7 @@ int drm_simple_display_pipe_init(struct drm_device *dev, struct drm_simple_display_pipe *pipe, const struct drm_simple_display_pipe_funcs *funcs, const uint32_t *formats, unsigned int format_count, + const uint64_t *format_modifiers, struct drm_connector *connector) { struct drm_encoder *encoder = &pipe->encoder; @@ -246,6 +248,7 @@ int drm_simple_display_pipe_init(struct drm_device *dev, ret = drm_universal_plane_init(dev, plane, 0, &drm_simple_kms_plane_funcs, formats, format_count, + format_modifiers, DRM_PLANE_TYPE_PRIMARY, NULL); if (ret) return ret; diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h index 952ef84dc046..fc7774cb2e43 100644 --- a/include/drm/drm_plane.h +++ b/include/drm/drm_plane.h @@ -323,6 +323,22 @@ struct drm_plane_funcs { * before data structures are torndown. */ void (*early_unregister)(struct drm_plane *plane); + + /** + * @format_mod_supported: + * + * This optional hook is used for the DRM to determine if the given + * format/modifier combination is valid for the plane. This allows the + * DRM to generate the correct format bitmask (which formats apply to + * which modifier). + * + * Returns: + * + * True if the given modifier is valid for that format on the plane. + * False otherwise. + */ + bool (*format_mod_supported)(struct drm_plane *plane, uint32_t format, + uint64_t modifier); }; /** @@ -416,6 +432,9 @@ struct drm_plane { unsigned int format_count; bool format_default; + uint64_t *modifiers; + unsigned int modifier_count; + struct drm_crtc *crtc; struct drm_framebuffer *fb; @@ -442,13 +461,14 @@ struct drm_plane { #define obj_to_plane(x) container_of(x, struct drm_plane, base) -extern __printf(8, 9) +__printf(9, 10) int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane, unsigned long possible_crtcs, const struct drm_plane_funcs *funcs, const uint32_t *formats, unsigned int format_count, + const uint64_t *format_modifiers, enum drm_plane_type type, const char *name, ...); extern int drm_plane_init(struct drm_device *dev, diff --git a/include/drm/drm_simple_kms_helper.h b/include/drm/drm_simple_kms_helper.h index 01a8436ccb0a..36d22de0fbaa 100644 --- a/include/drm/drm_simple_kms_helper.h +++ b/include/drm/drm_simple_kms_helper.h @@ -120,6 +120,7 @@ int drm_simple_display_pipe_init(struct drm_device *dev, struct drm_simple_display_pipe *pipe, const struct drm_simple_display_pipe_funcs *funcs, const uint32_t *formats, unsigned int format_count, + const uint64_t *format_modifiers, struct drm_connector *connector); #endif /* __LINUX_DRM_SIMPLE_KMS_HELPER_H */ diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h index 9e1bb7fabcde..fc0cac3e310e 100644 --- a/include/uapi/drm/drm_fourcc.h +++ b/include/uapi/drm/drm_fourcc.h @@ -162,6 +162,8 @@ extern "C" { #define DRM_FORMAT_MOD_VENDOR_QCOM 0x05 /* add more to the end as needed */ +#define DRM_FORMAT_RESERVED ((1ULL << 56) - 1) + #define fourcc_mod_code(vendor, val) \ ((((__u64)DRM_FORMAT_MOD_VENDOR_## vendor) << 56) | (val & 0x00ffffffffffffffULL)) @@ -173,6 +175,15 @@ extern "C" { * authoritative source for all of these. */ +/* + * Invalid Modifier + * + * This modifier can be used as a sentinel to terminate the format modifiers + * list, or to initialize a variable with an invalid modifier. It might also be + * used to report an error back to userspace for certain APIs. + */ +#define DRM_FORMAT_MOD_INVALID fourcc_mod_code(NONE, DRM_FORMAT_RESERVED) + /* * Linear Layout *