[RFC 0/4] drm: add generic KMS blob properties for image enhancement

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Rahul Sharma

6 Mar 2014 6 Mar '14

6:12 a.m.

From: Rahul Sharma Rahul.Sharma@samsung.com

Patch set has following proposal.

1) Add writable KMS blob properties patch 1: drm: allow to create blank writable blob properties patch 2: drm: add ioctl to write into binary blob KMS properties

2) Add generic image enhancement properties. Added as per exynos hardware requirements (to start). patch 3: drm: add generic blob properties for image enhancement

3) Allow drivers to create writable blob properties patch 4: drm: export create and destroy function for blob properties

Initial discussion before preparing this RFC is at http://comments.gmane.org/gmane.linux.kernel.samsung-soc/27278

This series is based on Dave's drm-next branch at http://cgit.freedesktop.org/~airlied/linux/

Rahul Sharma (4): drm: allow to create blank writable blob properties drm: add ioctl to write into binary blob KMS properties drm: add generic blob properties for image enhancement drm: export create and destroy function for blob properties

drivers/gpu/drm/drm_crtc.c | 201 +++++++++++++++++++++++++++++++++++++++++-- drivers/gpu/drm/drm_drv.c | 1 + include/drm/drm_crtc.h | 19 ++++ include/uapi/drm/drm.h | 1 + include/uapi/drm/drm_mode.h | 49 +++++++++++ 5 files changed, 265 insertions(+), 6 deletions(-)

-- 1.7.9.5

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Rahul Sharma

6 Mar 6 Mar

6:12 a.m.

New subject: [RFC 1/4] drm: allow to create blank writable blob properties

There is no provision to create a blob property without providing binary data. This data is needed to fill inside the blob.

With subsequent patches, blob properties are modified to receive well defined structures by the user application. DRM creates a blank blob (initialized with all zeros) which can be filled by user application through set_blob ioctl.

Signed-off-by: Rahul Sharma rahul.sharma@samsung.com --- drivers/gpu/drm/drm_crtc.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 35ea15d..9a2215c 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -3190,7 +3190,7 @@ static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev struct drm_property_blob *blob; int ret;

- if (!length || !data) + if (!length) return NULL;

blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL); @@ -3205,7 +3205,8 @@ static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev

blob->length = length;

- memcpy(blob->data, data, length); + if (data) + memcpy(blob->data, data, length);

list_add_tail(&blob->head, &dev->mode_config.property_blob_list); return blob;

-- 1.7.9.5

Rahul Sharma

6:12 a.m.

New subject: [RFC 2/4] drm: add ioctl to write into binary blob KMS properties

Add a new ioctl to common drm framework which can be used to set variable length binary data from the user space. 'Blob' is the only KMS property which can hold more than 64 bits. So far, it has been implemented as read only property for user application (only used for EDID data).

Signed-off-by: Rahul Sharma rahul.sharma@samsung.com --- drivers/gpu/drm/drm_crtc.c | 73 ++++++++++++++++++++++++++++++++++++++++++- drivers/gpu/drm/drm_drv.c | 1 + include/drm/drm_crtc.h | 2 ++ include/uapi/drm/drm.h | 1 + include/uapi/drm/drm_mode.h | 8 +++++ 5 files changed, 84 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 9a2215c..a2b87a5 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -3300,7 +3300,6 @@ static bool drm_property_change_is_valid(struct drm_property *property, valid_mask |= (1ULL << property->values[i]); return !(value & ~valid_mask); } else if (property->flags & DRM_MODE_PROP_BLOB) { - /* Only the driver knows */ return true; } else { int i; @@ -3492,6 +3491,78 @@ out: return ret; }

+int drm_mode_setblob_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_mode_object *arg_obj; + struct drm_mode_object *blob_obj; + struct drm_mode_object *prop_obj; + struct drm_property *property; + struct drm_mode_set_blob *arg = data; + struct drm_property_blob *blob; + int ret = -EINVAL, i; + void __user *blob_ptr; + + if (!drm_core_check_feature(dev, DRIVER_MODESET)) + return -EINVAL; + + drm_modeset_lock_all(dev); + + blob_obj = drm_mode_object_find(dev, arg->blob_id, DRM_MODE_OBJECT_BLOB); + if (!blob_obj) + goto done; + + blob = obj_to_blob(blob_obj); + + arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type); + if (!arg_obj) + goto done; + + if (!arg_obj->properties) + goto done; + + for (i = 0; i < arg_obj->properties->count; i++) + if (arg_obj->properties->values[i] == arg->blob_id) + break; + + if (i == arg_obj->properties->count) + goto done; + + prop_obj = drm_mode_object_find(dev, arg_obj->properties->ids[i], + DRM_MODE_OBJECT_PROPERTY); + if (!prop_obj) + goto done; + property = obj_to_property(prop_obj); + + if (!drm_property_change_is_valid(property, arg->blob_id)) + goto done; + + if (arg->length == blob->length) { + blob_ptr = (void __user *)(unsigned long)arg->data; + if (copy_from_user(blob->data, blob_ptr, blob->length)) { + ret = -EFAULT; + goto done; + } + } + + switch (arg_obj->type) { + case DRM_MODE_OBJECT_CONNECTOR: + ret = drm_mode_connector_set_obj_prop(arg_obj, property, + arg->blob_id); + break; + case DRM_MODE_OBJECT_CRTC: + ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->blob_id); + break; + case DRM_MODE_OBJECT_PLANE: + ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->blob_id); + break; + } + +done: + drm_modeset_unlock_all(dev); + return ret; +} + int drm_mode_connector_attach_encoder(struct drm_connector *connector, struct drm_encoder *encoder) { diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index 345be03..7cdb501 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -167,6 +167,7 @@ static const struct drm_ioctl_desc drm_ioctls[] = { DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_GETPROPERTIES, drm_mode_obj_get_properties_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_SETPROPERTY, drm_mode_obj_set_property_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR2, drm_mode_cursor2_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), + DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPBLOB, drm_mode_setblob_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED), };

#define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls ) diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index f764654..82f2016 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -1124,6 +1124,8 @@ extern int drm_mode_getproperty_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); extern int drm_mode_getblob_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); +extern int drm_mode_setblob_ioctl(struct drm_device *dev, + void *data, struct drm_file *file_priv); extern int drm_mode_connector_property_set_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); extern int drm_mode_getencoder(struct drm_device *dev, diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h index b06c8ed..d91139b 100644 --- a/include/uapi/drm/drm.h +++ b/include/uapi/drm/drm.h @@ -760,6 +760,7 @@ struct drm_prime_handle { #define DRM_IOCTL_MODE_OBJ_GETPROPERTIES DRM_IOWR(0xB9, struct drm_mode_obj_get_properties) #define DRM_IOCTL_MODE_OBJ_SETPROPERTY DRM_IOWR(0xBA, struct drm_mode_obj_set_property) #define DRM_IOCTL_MODE_CURSOR2 DRM_IOWR(0xBB, struct drm_mode_cursor2) +#define DRM_IOCTL_MODE_SETPROPBLOB DRM_IOWR(0xBC, struct drm_mode_set_blob)

/** * Device specific ioctls should only be in their respective headers diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h index f104c26..1d8216d 100644 --- a/include/uapi/drm/drm_mode.h +++ b/include/uapi/drm/drm_mode.h @@ -295,6 +295,14 @@ struct drm_mode_get_blob { __u64 data; };

+struct drm_mode_set_blob { + __u32 blob_id; + __u32 obj_id; + __u32 obj_type; + __u32 length; + __u64 data; +}; + struct drm_mode_fb_cmd { __u32 fb_id; __u32 width, height;

-- 1.7.9.5

Rahul Sharma

6:12 a.m.

New subject: [RFC 3/4] drm: add generic blob properties for image enhancement

Add generic KMS blob properties to core drm framework. These are writable blob properties which can be used to set Image Enhancement parameters. The properties which are added here are meant for color reproduction, color saturation and edge enhancement.

Signed-off-by: Rahul Sharma rahul.sharma@samsung.com --- drivers/gpu/drm/drm_crtc.c | 115 +++++++++++++++++++++++++++++++++++++++++++ include/drm/drm_crtc.h | 13 +++++ include/uapi/drm/drm_mode.h | 41 +++++++++++++++ 3 files changed, 169 insertions(+)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index a2b87a5..8771abf 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -1260,6 +1260,121 @@ int drm_mode_create_dirty_info_property(struct drm_device *dev) } EXPORT_SYMBOL(drm_mode_create_dirty_info_property);

+/** + * drm_mode_create_color_saturation_property - create property for color saturation + * @dev: DRM device + * + */ +int drm_mode_create_color_saturation_property( + struct drm_device *dev) +{ + struct drm_mode_color_saturation *params; + struct drm_property *prop; + char prop_name[] = "color saturation"; + + if (dev->mode_config.color_saturation_property || + dev->mode_config.color_saturation_blob_ptr) + return -EEXIST; + + prop = drm_property_create(dev, DRM_MODE_PROP_BLOB, + prop_name, 0); + if (!prop) { + DRM_ERROR("fail to create %s property.\n", prop_name); + return -ENOMEM; + } + + dev->mode_config.color_saturation_blob_ptr = + drm_property_create_blob(dev, sizeof(*params), + NULL); + if (!dev->mode_config.color_saturation_blob_ptr) { + DRM_ERROR("failed to allocate blob for %s.\n", prop_name); + drm_property_destroy(dev, prop); + return -ENOMEM; + } + + dev->mode_config.color_saturation_property = prop; + + return 0; +} +EXPORT_SYMBOL(drm_mode_create_color_saturation_property); + +/** + * drm_mode_create_color_reproduction_property - create property for color reproduction + * @dev: DRM device + * + */ +int drm_mode_create_color_reproduction_property( + struct drm_device *dev) +{ + struct drm_mode_color_reproduction *params; + struct drm_property *prop; + char prop_name[] = "color reproduction"; + + if (dev->mode_config.color_reproduction_property || + dev->mode_config.color_reproduction_blob_ptr) + return -EEXIST; + + prop = drm_property_create(dev, DRM_MODE_PROP_BLOB, + prop_name, 0); + if (!prop) { + DRM_ERROR("fail to create %s property.\n", prop_name); + return -ENOMEM; + } + + dev->mode_config.color_reproduction_blob_ptr = + drm_property_create_blob(dev, sizeof(*params), + NULL); + if (!dev->mode_config.color_reproduction_blob_ptr) { + DRM_ERROR("failed to allocate blob for %s\n", prop_name); + drm_property_destroy(dev, prop); + return -ENOMEM; + } + + dev->mode_config.color_reproduction_property = prop; + + return 0; +} +EXPORT_SYMBOL(drm_mode_create_color_reproduction_property); + + +/** + * drm_mode_create_edge_enhancement_property - create property for edge enhancement + * @dev: DRM device + * + */ +int drm_mode_create_edge_enhancement_property( + struct drm_device *dev) +{ + struct drm_mode_edge_enhancement *params; + struct drm_property *prop; + char prop_name[] = "edge enhancement"; + + if (dev->mode_config.edge_enhancement_property || + dev->mode_config.edge_enhancement_blob_ptr) + return -EEXIST; + + prop = drm_property_create(dev, DRM_MODE_PROP_BLOB, + prop_name, 0); + if (!prop) { + DRM_ERROR("fail to create %s property.\n", prop_name); + return -ENOMEM; + } + + dev->mode_config.edge_enhancement_blob_ptr = + drm_property_create_blob(dev, sizeof(*params), + NULL); + if (!dev->mode_config.edge_enhancement_blob_ptr) { + DRM_ERROR("failed to allocate blob for %s\n", prop_name); + drm_property_destroy(dev, prop); + return -ENOMEM; + } + + dev->mode_config.edge_enhancement_property = prop; + + return 0; +} +EXPORT_SYMBOL(drm_mode_create_edge_enhancement_property); + static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group) { uint32_t total_objects = 0; diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 82f2016..df7b178 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -901,6 +901,13 @@ struct drm_mode_config { /* Optional properties */ struct drm_property *scaling_mode_property; struct drm_property *dirty_info_property; + struct drm_property *color_saturation_property; + struct drm_property *color_reproduction_property; + struct drm_property *edge_enhancement_property; + + struct drm_property_blob *color_saturation_blob_ptr; + struct drm_property_blob *color_reproduction_blob_ptr; + struct drm_property_blob *edge_enhancement_blob_ptr;

/* dumb ioctl parameters */ uint32_t preferred_depth, prefer_shadow; @@ -1079,6 +1086,12 @@ extern int drm_mode_create_tv_properties(struct drm_device *dev, int num_formats extern int drm_mode_create_scaling_mode_property(struct drm_device *dev); extern int drm_mode_create_dirty_info_property(struct drm_device *dev); extern const char *drm_get_encoder_name(const struct drm_encoder *encoder); +extern int drm_mode_create_color_saturation_property( + struct drm_device *dev); +extern int drm_mode_create_color_reproduction_property( + struct drm_device *dev); +extern int drm_mode_create_edge_enhancement_property( + struct drm_device *dev);

extern int drm_mode_connector_attach_encoder(struct drm_connector *connector, struct drm_encoder *encoder); diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h index 1d8216d..d28f82d 100644 --- a/include/uapi/drm/drm_mode.h +++ b/include/uapi/drm/drm_mode.h @@ -504,4 +504,45 @@ struct drm_mode_destroy_dumb { uint32_t handle; };

+/* set up parameters for finer color saturation */ +struct drm_mode_color_saturation { + /* hue gain for individual colors */ + uint16_t hue_gain_red; + uint16_t hue_gain_green; + uint16_t hue_gain_blue; + uint16_t hue_gain_cyan; + uint16_t hue_gain_magenta; + uint16_t hue_gain_yellow; + /* hue gain for overall display */ + uint16_t hue_gain_overall; +}; + +/* set up parameters for standard color reproduction */ +struct drm_mode_color_reproduction { + /* 16 bit rgb value for primary colors */ + uint16_t red_rgb[3]; + uint16_t green_rgb[3]; + uint16_t blue_rgb[3]; + uint16_t cyan_rgb[3]; + uint16_t magenta_rgb[3]; + uint16_t yellow_rgb[3]; + uint16_t white_rgb[3]; + uint16_t black_rgb[3]; +}; + +/* set up parameters for edge enhancement */ +struct drm_mode_edge_enhancement { + /* threshold values for edge and background*/ + uint16_t edge_th; + uint16_t background_th; + /* postive gain */ + uint16_t pg_edge; + uint16_t pg_flat; + uint16_t pg_background; + /* negative gain */ + uint16_t ng_edge; + uint16_t ng_flat; + uint16_t ng_background; +}; + #endif

-- 1.7.9.5

Daniel Vetter

7 Mar 7 Mar

8:36 a.m.

New subject: [RFC 3/4] drm: add generic blob properties for image enhancement

On Thu, Mar 06, 2014 at 11:42:13AM +0530, Rahul Sharma wrote:

...

Add generic KMS blob properties to core drm framework. These are writable blob properties which can be used to set Image Enhancement parameters. The properties which are added here are meant for color reproduction, color saturation and edge enhancement.

Signed-off-by: Rahul Sharma rahul.sharma@samsung.com

drivers/gpu/drm/drm_crtc.c | 115 +++++++++++++++++++++++++++++++++++++++++++ include/drm/drm_crtc.h | 13 +++++ include/uapi/drm/drm_mode.h | 41 +++++++++++++++ 3 files changed, 169 insertions(+)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index a2b87a5..8771abf 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -1260,6 +1260,121 @@ int drm_mode_create_dirty_info_property(struct drm_device *dev) } EXPORT_SYMBOL(drm_mode_create_dirty_info_property);

+/**

drm_mode_create_color_saturation_property - create property for color saturation

@dev: DRM device

*/

+int drm_mode_create_color_saturation_property(
	struct drm_device *dev)
+{
struct drm_mode_color_saturation *params;

struct drm_property *prop;

char prop_name[] = "color saturation";

if (dev->mode_config.color_saturation_property ||
dev->mode_config.color_saturation_blob_ptr)
return -EEXIST;
prop = drm_property_create(dev, DRM_MODE_PROP_BLOB,
	prop_name, 0);
if (!prop) {
DRM_ERROR("fail to create %s property.\n", prop_name);
return -ENOMEM;
}

dev->mode_config.color_saturation_blob_ptr =
drm_property_create_blob(dev, sizeof(*params),
	NULL);
if (!dev->mode_config.color_saturation_blob_ptr) {
DRM_ERROR("failed to allocate blob for %s.\n", prop_name);
drm_property_destroy(dev, prop);
return -ENOMEM;
}

dev->mode_config.color_saturation_property = prop;

return 0;
+} +EXPORT_SYMBOL(drm_mode_create_color_saturation_property);

+/**

drm_mode_create_color_reproduction_property - create property for color reproduction

@dev: DRM device

*/

+int drm_mode_create_color_reproduction_property(
	struct drm_device *dev)
+{
struct drm_mode_color_reproduction *params;

struct drm_property *prop;

char prop_name[] = "color reproduction";

if (dev->mode_config.color_reproduction_property ||
dev->mode_config.color_reproduction_blob_ptr)
return -EEXIST;
prop = drm_property_create(dev, DRM_MODE_PROP_BLOB,
	prop_name, 0);
if (!prop) {
DRM_ERROR("fail to create %s property.\n", prop_name);
return -ENOMEM;
}

dev->mode_config.color_reproduction_blob_ptr =
drm_property_create_blob(dev, sizeof(*params),
	NULL);
if (!dev->mode_config.color_reproduction_blob_ptr) {
DRM_ERROR("failed to allocate blob for %s\n", prop_name);
drm_property_destroy(dev, prop);
return -ENOMEM;
}

dev->mode_config.color_reproduction_property = prop;

return 0;
+} +EXPORT_SYMBOL(drm_mode_create_color_reproduction_property);

+/**

drm_mode_create_edge_enhancement_property - create property for edge enhancement

@dev: DRM device

*/

+int drm_mode_create_edge_enhancement_property(
	struct drm_device *dev)
+{
struct drm_mode_edge_enhancement *params;

struct drm_property *prop;

char prop_name[] = "edge enhancement";

if (dev->mode_config.edge_enhancement_property ||
dev->mode_config.edge_enhancement_blob_ptr)
return -EEXIST;
prop = drm_property_create(dev, DRM_MODE_PROP_BLOB,
	prop_name, 0);
if (!prop) {
DRM_ERROR("fail to create %s property.\n", prop_name);
return -ENOMEM;
}

dev->mode_config.edge_enhancement_blob_ptr =
drm_property_create_blob(dev, sizeof(*params),
	NULL);
if (!dev->mode_config.edge_enhancement_blob_ptr) {
DRM_ERROR("failed to allocate blob for %s\n", prop_name);
drm_property_destroy(dev, prop);
return -ENOMEM;
}

dev->mode_config.edge_enhancement_property = prop;

return 0;
+} +EXPORT_SYMBOL(drm_mode_create_edge_enhancement_property);

static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group) { uint32_t total_objects = 0; diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 82f2016..df7b178 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -901,6 +901,13 @@ struct drm_mode_config { /* Optional properties */ struct drm_property *scaling_mode_property; struct drm_property *dirty_info_property;

struct drm_property *color_saturation_property;

struct drm_property *color_reproduction_property;

struct drm_property *edge_enhancement_property;

struct drm_property_blob *color_saturation_blob_ptr;

struct drm_property_blob *color_reproduction_blob_ptr;

struct drm_property_blob *edge_enhancement_blob_ptr;

/* dumb ioctl parameters */ uint32_t preferred_depth, prefer_shadow;

@@ -1079,6 +1086,12 @@ extern int drm_mode_create_tv_properties(struct drm_device *dev, int num_formats extern int drm_mode_create_scaling_mode_property(struct drm_device *dev); extern int drm_mode_create_dirty_info_property(struct drm_device *dev); extern const char *drm_get_encoder_name(const struct drm_encoder *encoder); +extern int drm_mode_create_color_saturation_property(
struct drm_device *dev);
+extern int drm_mode_create_color_reproduction_property(
struct drm_device *dev);
+extern int drm_mode_create_edge_enhancement_property(
struct drm_device *dev);
extern int drm_mode_connector_attach_encoder(struct drm_connector *connector, struct drm_encoder *encoder); diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h index 1d8216d..d28f82d 100644 --- a/include/uapi/drm/drm_mode.h +++ b/include/uapi/drm/drm_mode.h @@ -504,4 +504,45 @@ struct drm_mode_destroy_dumb { uint32_t handle; };

+/* set up parameters for finer color saturation */ +struct drm_mode_color_saturation {

/* hue gain for individual colors */

uint16_t hue_gain_red;

uint16_t hue_gain_green;

uint16_t hue_gain_blue;

uint16_t hue_gain_cyan;

uint16_t hue_gain_magenta;

uint16_t hue_gain_yellow;

/* hue gain for overall display */

uint16_t hue_gain_overall;

+};

+/* set up parameters for standard color reproduction */ +struct drm_mode_color_reproduction {

/* 16 bit rgb value for primary colors */

uint16_t red_rgb[3];

uint16_t green_rgb[3];

uint16_t blue_rgb[3];

uint16_t cyan_rgb[3];

uint16_t magenta_rgb[3];

uint16_t yellow_rgb[3];

uint16_t white_rgb[3];

uint16_t black_rgb[3];

+};

+/* set up parameters for edge enhancement */ +struct drm_mode_edge_enhancement {

/* threshold values for edge and background*/

uint16_t edge_th;

uint16_t background_th;

/* postive gain */

uint16_t pg_edge;

uint16_t pg_flat;

uint16_t pg_background;

/* negative gain */

uint16_t ng_edge;

uint16_t ng_flat;

uint16_t ng_background;

+};

Tbh I don't really understand why we can't use normal properties for this. We might want to add a new RBG type of property (or YUV fwiw, both with and without alpha) to make this standardized (maybe with some fixed point value for non-normalizes).

If the only reason you group them is to atomically commit them, then the only thing we need is the atomic ioctl, which can shovel entire groups of properties over the wire at once. -Daniel

-- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch

Rahul Sharma

10:20 a.m.

New subject: [RFC 3/4] drm: add generic blob properties for image enhancement

Hi Daniel,

On 7 March 2014 14:06, Daniel Vetter daniel@ffwll.ch wrote:

...

On Thu, Mar 06, 2014 at 11:42:13AM +0530, Rahul Sharma wrote:

...
Add generic KMS blob properties to core drm framework. These are writable blob properties which can be used to set Image Enhancement parameters. The properties which are added here are meant for color reproduction, color saturation and edge enhancement.

Signed-off-by: Rahul Sharma rahul.sharma@samsung.com

drivers/gpu/drm/drm_crtc.c | 115 +++++++++++++++++++++++++++++++++++++++++++ include/drm/drm_crtc.h | 13 +++++ include/uapi/drm/drm_mode.h | 41 +++++++++++++++ 3 files changed, 169 insertions(+)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index a2b87a5..8771abf 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -1260,6 +1260,121 @@ int drm_mode_create_dirty_info_property(struct drm_device *dev) } EXPORT_SYMBOL(drm_mode_create_dirty_info_property);

+/**

drm_mode_create_color_saturation_property - create property for color saturation

@dev: DRM device

*/

+int drm_mode_create_color_saturation_property(
                struct drm_device *dev)
+{
struct drm_mode_color_saturation *params;
struct drm_property *prop;
char prop_name[] = "color saturation";
if (dev->mode_config.color_saturation_property ||
        dev->mode_config.color_saturation_blob_ptr)
        return -EEXIST;
prop = drm_property_create(dev, DRM_MODE_PROP_BLOB,
                prop_name, 0);
if (!prop) {
        DRM_ERROR("fail to create %s property.\n", prop_name);
        return -ENOMEM;
}
dev->mode_config.color_saturation_blob_ptr =
        drm_property_create_blob(dev, sizeof(*params),
                NULL);
if (!dev->mode_config.color_saturation_blob_ptr) {
        DRM_ERROR("failed to allocate blob for %s.\n", prop_name);
        drm_property_destroy(dev, prop);
        return -ENOMEM;
}
dev->mode_config.color_saturation_property = prop;
return 0;
+} +EXPORT_SYMBOL(drm_mode_create_color_saturation_property);

+/**

drm_mode_create_color_reproduction_property - create property for color reproduction

@dev: DRM device

*/

+int drm_mode_create_color_reproduction_property(
                struct drm_device *dev)
+{
struct drm_mode_color_reproduction *params;
struct drm_property *prop;
char prop_name[] = "color reproduction";
if (dev->mode_config.color_reproduction_property ||
        dev->mode_config.color_reproduction_blob_ptr)
        return -EEXIST;
prop = drm_property_create(dev, DRM_MODE_PROP_BLOB,
                prop_name, 0);
if (!prop) {
        DRM_ERROR("fail to create %s property.\n", prop_name);
        return -ENOMEM;
}
dev->mode_config.color_reproduction_blob_ptr =
        drm_property_create_blob(dev, sizeof(*params),
                NULL);
if (!dev->mode_config.color_reproduction_blob_ptr) {
        DRM_ERROR("failed to allocate blob for %s\n", prop_name);
        drm_property_destroy(dev, prop);
        return -ENOMEM;
}
dev->mode_config.color_reproduction_property = prop;
return 0;
+} +EXPORT_SYMBOL(drm_mode_create_color_reproduction_property);

+/**

drm_mode_create_edge_enhancement_property - create property for edge enhancement

@dev: DRM device

*/

+int drm_mode_create_edge_enhancement_property(
                struct drm_device *dev)
+{
struct drm_mode_edge_enhancement *params;
struct drm_property *prop;
char prop_name[] = "edge enhancement";
if (dev->mode_config.edge_enhancement_property ||
        dev->mode_config.edge_enhancement_blob_ptr)
        return -EEXIST;
prop = drm_property_create(dev, DRM_MODE_PROP_BLOB,
                prop_name, 0);
if (!prop) {
        DRM_ERROR("fail to create %s property.\n", prop_name);
        return -ENOMEM;
}
dev->mode_config.edge_enhancement_blob_ptr =
        drm_property_create_blob(dev, sizeof(*params),
                NULL);
if (!dev->mode_config.edge_enhancement_blob_ptr) {
        DRM_ERROR("failed to allocate blob for %s\n", prop_name);
        drm_property_destroy(dev, prop);
        return -ENOMEM;
}
dev->mode_config.edge_enhancement_property = prop;
return  0;
+} +EXPORT_SYMBOL(drm_mode_create_edge_enhancement_property);

static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group) { uint32_t total_objects = 0; diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 82f2016..df7b178 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -901,6 +901,13 @@ struct drm_mode_config { /* Optional properties */ struct drm_property *scaling_mode_property; struct drm_property *dirty_info_property;
struct drm_property *color_saturation_property;
struct drm_property *color_reproduction_property;
struct drm_property *edge_enhancement_property;
struct drm_property_blob *color_saturation_blob_ptr;
struct drm_property_blob *color_reproduction_blob_ptr;
struct drm_property_blob *edge_enhancement_blob_ptr;

/* dumb ioctl parameters */
uint32_t preferred_depth, prefer_shadow;
@@ -1079,6 +1086,12 @@ extern int drm_mode_create_tv_properties(struct drm_device *dev, int num_formats extern int drm_mode_create_scaling_mode_property(struct drm_device *dev); extern int drm_mode_create_dirty_info_property(struct drm_device *dev); extern const char *drm_get_encoder_name(const struct drm_encoder *encoder); +extern int drm_mode_create_color_saturation_property(
        struct drm_device *dev);
+extern int drm_mode_create_color_reproduction_property(
        struct drm_device *dev);
+extern int drm_mode_create_edge_enhancement_property(
        struct drm_device *dev);
extern int drm_mode_connector_attach_encoder(struct drm_connector *connector, struct drm_encoder *encoder); diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h index 1d8216d..d28f82d 100644 --- a/include/uapi/drm/drm_mode.h +++ b/include/uapi/drm/drm_mode.h @@ -504,4 +504,45 @@ struct drm_mode_destroy_dumb { uint32_t handle; };

+/* set up parameters for finer color saturation */ +struct drm_mode_color_saturation {
/* hue gain for individual colors */
uint16_t hue_gain_red;
uint16_t hue_gain_green;
uint16_t hue_gain_blue;
uint16_t hue_gain_cyan;
uint16_t hue_gain_magenta;
uint16_t hue_gain_yellow;
/* hue gain for overall display */
uint16_t hue_gain_overall;
+};

+/* set up parameters for standard color reproduction */ +struct drm_mode_color_reproduction {
/* 16 bit rgb value for primary colors */
uint16_t red_rgb[3];
uint16_t green_rgb[3];
uint16_t blue_rgb[3];
uint16_t cyan_rgb[3];
uint16_t magenta_rgb[3];
uint16_t yellow_rgb[3];
uint16_t white_rgb[3];
uint16_t black_rgb[3];
+};

+/* set up parameters for edge enhancement */ +struct drm_mode_edge_enhancement {
/* threshold values for edge and background*/
uint16_t edge_th;
uint16_t background_th;
/* postive gain */
uint16_t pg_edge;
uint16_t pg_flat;
uint16_t pg_background;
/* negative gain */
uint16_t ng_edge;
uint16_t ng_flat;
uint16_t ng_background;
+};
Tbh I don't really understand why we can't use normal properties for this. We might want to add a new RBG type of property (or YUV fwiw, both with and without alpha) to make this standardized (maybe with some fixed point value for non-normalizes).

I dropped Normal properties (the ones which accepts 64 bit data) because there will be too many of them. As you can see the count is going upto 24 parameters, means 24 such properties, as each can carry one parameter. This is too much of overhead. Please correct me if you mean something different.

I am not sure what are RGB type properties? I know only about 64-bit normal properties which are too compact to carry above structures. Are you talking about set_gamma type of ioctls. Each "set_gamma" type ioctl needs a addition in callbacks till down the layer which looks bit unnecessary, while writable blob properties are using same set_property and get_property infrastructure.

...

If the only reason you group them is to atomically commit them, then the only thing we need is the atomic ioctl, which can shovel entire groups of properties over the wire at once.

Atomic commit is not an explicit requirement. But splitting them to many small pieces (in case of normal properties) are resulting into many user-kernel switching overhead, which seems avoidable.

IF we have a reason to keep blobs Readable, I can work on alternate methods like 3 new ioclts for saturation, reproduction and edge enhancement. But as if now writable blob properties seems a better method to me.

Regards, Rahul Sharma.

...

-Daniel

Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/dri-devel

Matt Roper

8 Mar 8 Mar

12:46 a.m.

New subject: [RFC 3/4] drm: add generic blob properties for image enhancement

On Fri, Mar 07, 2014 at 03:50:54PM +0530, Rahul Sharma wrote:

...

Hi Daniel,

On 7 March 2014 14:06, Daniel Vetter daniel@ffwll.ch wrote:

...
On Thu, Mar 06, 2014 at 11:42:13AM +0530, Rahul Sharma wrote:

...
Add generic KMS blob properties to core drm framework. These are writable blob properties which can be used to set Image Enhancement parameters. The properties which are added here are meant for color reproduction, color saturation and edge enhancement.

Signed-off-by: Rahul Sharma rahul.sharma@samsung.com

...

...
Tbh I don't really understand why we can't use normal properties for this. We might want to add a new RBG type of property (or YUV fwiw, both with and without alpha) to make this standardized (maybe with some fixed point value for non-normalizes).

I dropped Normal properties (the ones which accepts 64 bit data) because there will be too many of them. As you can see the count is going upto 24 parameters, means 24 such properties, as each can carry one parameter. This is too much of overhead. Please correct me if you mean something different.

I am not sure what are RGB type properties? I know only about 64-bit normal properties which are too compact to carry above structures. Are you talking about set_gamma type of ioctls. Each "set_gamma" type ioctl needs a addition in callbacks till down the layer which looks bit unnecessary, while writable blob properties are using same set_property and get_property infrastructure.

...
If the only reason you group them is to atomically commit them, then the only thing we need is the atomic ioctl, which can shovel entire groups of properties over the wire at once.

Atomic commit is not an explicit requirement. But splitting them to many small pieces (in case of normal properties) are resulting into many user-kernel switching overhead, which seems avoidable.

The idea with atomic modeset / nuclear pageflip is that you collect a whole bunch of individual property updates into a "property set" container in userspace (libdrm). When you're done setting all the values you want and "commit" the property set, all of the values that you collected get passed to the kernel in one go via a new ioctl (and are then updated in an atomic manner by the DRM driver). So performing your 24 different property updates via the upcoming atomic API's shouldn't be a problem and shouldn't add any unnecessary overhead.

The kernel-side of atomic modeset / nuclear pageflip is still a WIP, so it isn't upstream yet, but you can see the userspace-facing API in Rob Clark's repo here:

https://github.com/robclark/libdrm/blob/atomic/xf86drmMode.h

Note the drmModePropertySet{Alloc,Add,Commit,Free}() functions near the bottom.

Matt

-- Matt Roper Graphics Software Engineer ISG Platform Enabling & Development Intel Corporation (916) 356-2795

Rahul Sharma

10 Mar 10 Mar

4:20 a.m.

New subject: [RFC 3/4] drm: add generic blob properties for image enhancement

On 8 March 2014 06:16, Matt Roper matthew.d.roper@intel.com wrote:

...

On Fri, Mar 07, 2014 at 03:50:54PM +0530, Rahul Sharma wrote:

...
Hi Daniel,

On 7 March 2014 14:06, Daniel Vetter daniel@ffwll.ch wrote:

...
On Thu, Mar 06, 2014 at 11:42:13AM +0530, Rahul Sharma wrote:

...
Add generic KMS blob properties to core drm framework. These are writable blob properties which can be used to set Image Enhancement parameters. The properties which are added here are meant for color reproduction, color saturation and edge enhancement.

Signed-off-by: Rahul Sharma rahul.sharma@samsung.com

...

...
...
Tbh I don't really understand why we can't use normal properties for this. We might want to add a new RBG type of property (or YUV fwiw, both with and without alpha) to make this standardized (maybe with some fixed point value for non-normalizes).

I dropped Normal properties (the ones which accepts 64 bit data) because there will be too many of them. As you can see the count is going upto 24 parameters, means 24 such properties, as each can carry one parameter. This is too much of overhead. Please correct me if you mean something different.

I am not sure what are RGB type properties? I know only about 64-bit normal properties which are too compact to carry above structures. Are you talking about set_gamma type of ioctls. Each "set_gamma" type ioctl needs a addition in callbacks till down the layer which looks bit unnecessary, while writable blob properties are using same set_property and get_property infrastructure.

...
If the only reason you group them is to atomically commit them, then the only thing we need is the atomic ioctl, which can shovel entire groups of properties over the wire at once.

Atomic commit is not an explicit requirement. But splitting them to many small pieces (in case of normal properties) are resulting into many user-kernel switching overhead, which seems avoidable.

The idea with atomic modeset / nuclear pageflip is that you collect a whole bunch of individual property updates into a "property set" container in userspace (libdrm). When you're done setting all the values you want and "commit" the property set, all of the values that you collected get passed to the kernel in one go via a new ioctl (and are then updated in an atomic manner by the DRM driver). So performing your 24 different property updates via the upcoming atomic API's shouldn't be a problem and shouldn't add any unnecessary overhead.

The kernel-side of atomic modeset / nuclear pageflip is still a WIP, so it isn't upstream yet, but you can see the userspace-facing API in Rob Clark's repo here:
    https://github.com/robclark/libdrm/blob/atomic/xf86drmMode.h
Note the drmModePropertySet{Alloc,Add,Commit,Free}() functions near the bottom.

Thanks Matt,

I went through the share link. Got the idea of atomic modeset. It is a good solution for setting 24 properties in one go. But another issue is still unaddressed. I mean still need to declare 24 properties which are not "Really 24 different properties".

These are sub-parameters to 3 properties (color reproduction, color saturation and edge enhancement). Splitting them to 24 pieces, just because we don't have a a provision in KMS, is a work around to get things working. And, properties like "saturation_hue_gain_red", "saturation_hue_gain_green" ... will be undoubtedly ugly.

In Rob Clark's tree, I noticed

extern int drmModePropertySetAddBlob(drmModePropertySetPtr set, uint32_t object_id, uint32_t property_id, uint64_t length, void *blob);

Seems, already some implementation of writable blobs is there. I am not able to see the kernel though.

I request experts, to review this solution again. I found it quite useful and hold good with the idea of Atomic modeset.

Regards, Rahul Sharma

...

Matt

-- Matt Roper Graphics Software Engineer ISG Platform Enabling & Development Intel Corporation (916) 356-2795

Daniel Vetter

5:16 a.m.

New subject: [RFC 3/4] drm: add generic blob properties for image enhancement

On Mon, Mar 10, 2014 at 09:50:14AM +0530, Rahul Sharma wrote:

...

On 8 March 2014 06:16, Matt Roper matthew.d.roper@intel.com wrote:

...
On Fri, Mar 07, 2014 at 03:50:54PM +0530, Rahul Sharma wrote:

...
Hi Daniel,

On 7 March 2014 14:06, Daniel Vetter daniel@ffwll.ch wrote:

...
On Thu, Mar 06, 2014 at 11:42:13AM +0530, Rahul Sharma wrote:

...
Add generic KMS blob properties to core drm framework. These are writable blob properties which can be used to set Image Enhancement parameters. The properties which are added here are meant for color reproduction, color saturation and edge enhancement.

Signed-off-by: Rahul Sharma rahul.sharma@samsung.com

...

...
...
Tbh I don't really understand why we can't use normal properties for this. We might want to add a new RBG type of property (or YUV fwiw, both with and without alpha) to make this standardized (maybe with some fixed point value for non-normalizes).

I dropped Normal properties (the ones which accepts 64 bit data) because there will be too many of them. As you can see the count is going upto 24 parameters, means 24 such properties, as each can carry one parameter. This is too much of overhead. Please correct me if you mean something different.

I am not sure what are RGB type properties? I know only about 64-bit normal properties which are too compact to carry above structures. Are you talking about set_gamma type of ioctls. Each "set_gamma" type ioctl needs a addition in callbacks till down the layer which looks bit unnecessary, while writable blob properties are using same set_property and get_property infrastructure.

...
If the only reason you group them is to atomically commit them, then the only thing we need is the atomic ioctl, which can shovel entire groups of properties over the wire at once.

Atomic commit is not an explicit requirement. But splitting them to many small pieces (in case of normal properties) are resulting into many user-kernel switching overhead, which seems avoidable.

The idea with atomic modeset / nuclear pageflip is that you collect a whole bunch of individual property updates into a "property set" container in userspace (libdrm). When you're done setting all the values you want and "commit" the property set, all of the values that you collected get passed to the kernel in one go via a new ioctl (and are then updated in an atomic manner by the DRM driver). So performing your 24 different property updates via the upcoming atomic API's shouldn't be a problem and shouldn't add any unnecessary overhead.

The kernel-side of atomic modeset / nuclear pageflip is still a WIP, so it isn't upstream yet, but you can see the userspace-facing API in Rob Clark's repo here:
    https://github.com/robclark/libdrm/blob/atomic/xf86drmMode.h
Note the drmModePropertySet{Alloc,Add,Commit,Free}() functions near the bottom.
Thanks Matt,

I went through the share link. Got the idea of atomic modeset. It is a good solution for setting 24 properties in one go. But another issue is still unaddressed. I mean still need to declare 24 properties which are not "Really 24 different properties".

These are sub-parameters to 3 properties (color reproduction, color saturation and edge enhancement). Splitting them to 24 pieces, just because we don't have a a provision in KMS, is a work around to get things working. And, properties like "saturation_hue_gain_red", "saturation_hue_gain_green" ... will be undoubtedly ugly.

In Rob Clark's tree, I noticed

extern int drmModePropertySetAddBlob(drmModePropertySetPtr set, uint32_t object_id, uint32_t property_id, uint64_t length, void *blob);

Seems, already some implementation of writable blobs is there. I am not able to see the kernel though.

I request experts, to review this solution again. I found it quite useful and hold good with the idea of Atomic modeset.

Like I've said I think creating a standard property for RBG and RBGA values makes sense, to group this stuff a bit. But I don't think we need to group things further.

Some clear definitions of these properties is needed though - Sagar from our display group is working on that a bit. -Daniel

-- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch

Rahul Sharma

6 Mar 6 Mar

6:12 a.m.

New subject: [RFC 4/4] drm: export create and destroy function for blob properties

Drm drivers can also create and attach private blob properties. This patch exports functions to create and destroy blob properties.

Signed-off-by: Rahul Sharma rahul.sharma@samsung.com --- drivers/gpu/drm/drm_crtc.c | 8 +++++--- include/drm/drm_crtc.h | 4 ++++ 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 8771abf..f1939c2 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -3299,8 +3299,8 @@ done: return ret; }

-static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length, - void *data) +struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, + int length, void *data) { struct drm_property_blob *blob; int ret; @@ -3326,14 +3326,16 @@ static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev list_add_tail(&blob->head, &dev->mode_config.property_blob_list); return blob; } +EXPORT_SYMBOL(drm_property_create_blob);

-static void drm_property_destroy_blob(struct drm_device *dev, +void drm_property_destroy_blob(struct drm_device *dev, struct drm_property_blob *blob) { drm_mode_object_put(dev, &blob->base); list_del(&blob->head); kfree(blob); } +EXPORT_SYMBOL(drm_property_destroy_blob);

int drm_mode_getblob_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index df7b178..8bf7fb2 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -1077,6 +1077,10 @@ struct drm_property *drm_property_create_bitmask(struct drm_device *dev, struct drm_property *drm_property_create_range(struct drm_device *dev, int flags, const char *name, uint64_t min, uint64_t max); +extern struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, + int length, void *data); +extern void drm_property_destroy_blob(struct drm_device *dev, + struct drm_property_blob *blob); extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property); extern int drm_property_add_enum(struct drm_property *property, int index, uint64_t value, const char *name);

-- 1.7.9.5

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Daniel Vetter
Matt Roper
Rahul Sharma
Rahul Sharma