Commit 8ea30864 authored by Jesse Barnes's avatar Jesse Barnes Committed by Keith Packard
Browse files

drm/i915: add color key support v4 



Add new ioctls for getting and setting the current destination color
key.  This allows for simple overlay display control by matching a color
key value in the primary plane before blending the overlay on top.

v2: remove unnecessary mutex acquire/release around reg accesses
v3: add support for full color key management
v4: fix copy & paste bug in snb_get_colorkey
    don't bother checking min/max values against docs as the docs are likely
    wrong (how could we handle 10bpc surface formats?)

Reviewed-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
parent 175bd420

drivers/gpu/drm/i915/i915_dma.c

+2 −0
Original line number Diff line number Diff line
@@ -2305,6 +2305,8 @@ struct drm_ioctl_desc i915_ioctls[] = { 
	DRM_IOCTL_DEF_DRV(I915_GEM_MADVISE, i915_gem_madvise_ioctl, DRM_UNLOCKED),

	DRM_IOCTL_DEF_DRV(I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),

	DRM_IOCTL_DEF_DRV(I915_OVERLAY_ATTRS, intel_overlay_attrs, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),

	DRM_IOCTL_DEF_DRV(I915_SET_SPRITE_COLORKEY, intel_sprite_set_colorkey, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),

	DRM_IOCTL_DEF_DRV(I915_GET_SPRITE_COLORKEY, intel_sprite_get_colorkey, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),

};



int i915_max_ioctl = DRM_ARRAY_SIZE(i915_ioctls);

drivers/gpu/drm/i915/i915_reg.h

+3 −0
Original line number Diff line number Diff line
@@ -2737,9 +2737,12 @@ 
#define DVSSTRIDE(pipe) _PIPE(pipe, _DVSASTRIDE, _DVSBSTRIDE)

#define DVSPOS(pipe) _PIPE(pipe, _DVSAPOS, _DVSBPOS)

#define DVSSURF(pipe) _PIPE(pipe, _DVSASURF, _DVSBSURF)

#define DVSKEYMAX(pipe) _PIPE(pipe, _DVSAKEYMAXVAL, _DVSBKEYMAXVAL)

#define DVSSIZE(pipe) _PIPE(pipe, _DVSASIZE, _DVSBSIZE)

#define DVSSCALE(pipe) _PIPE(pipe, _DVSASCALE, _DVSBSCALE)

#define DVSTILEOFF(pipe) _PIPE(pipe, _DVSATILEOFF, _DVSBTILEOFF)

#define DVSKEYVAL(pipe) _PIPE(pipe, _DVSAKEYVAL, _DVSBKEYVAL)

#define DVSKEYMSK(pipe) _PIPE(pipe, _DVSAKEYMSK, _DVSBKEYMSK)



#define _SPRA_CTL		0x70280

#define   SPRITE_ENABLE			(1<<31)

drivers/gpu/drm/i915/intel_drv.h

+11 −0
Original line number Diff line number Diff line
@@ -26,6 +26,7 @@ 
#define __INTEL_DRV_H__



#include <linux/i2c.h>

#include "i915_drm.h"

#include "i915_drv.h"

#include "drm_crtc.h"

#include "drm_crtc_helper.h"
@@ -192,6 +193,10 @@ struct intel_plane { 
			     uint32_t x, uint32_t y,

			     uint32_t src_w, uint32_t src_h);

	void (*disable_plane)(struct drm_plane *plane);

	int (*update_colorkey)(struct drm_plane *plane,

			       struct drm_intel_sprite_colorkey *key);

	void (*get_colorkey)(struct drm_plane *plane,

			     struct drm_intel_sprite_colorkey *key);

};



#define to_intel_crtc(x) container_of(x, struct intel_crtc, base)
@@ -414,4 +419,10 @@ extern void sandybridge_update_wm(struct drm_device *dev); 
extern void intel_update_sprite_watermarks(struct drm_device *dev, int pipe,

					   uint32_t sprite_width,

					   int pixel_size);



extern int intel_sprite_set_colorkey(struct drm_device *dev, void *data,

				     struct drm_file *file_priv);

extern int intel_sprite_get_colorkey(struct drm_device *dev, void *data,

				     struct drm_file *file_priv);



#endif /* __INTEL_DRV_H__ */

drivers/gpu/drm/i915/intel_sprite.c

+177 −0
Original line number Diff line number Diff line
@@ -95,6 +95,7 @@ ivb_update_plane(struct drm_plane *plane, struct drm_framebuffer *fb, 
	/* must disable */

	sprctl |= SPRITE_TRICKLE_FEED_DISABLE;

	sprctl |= SPRITE_ENABLE;

	sprctl |= SPRITE_DEST_KEY;



	/* Sizes are 0 based */

	src_w--;
@@ -153,6 +154,60 @@ ivb_disable_plane(struct drm_plane *plane) 
	POSTING_READ(SPRSURF(pipe));

}



static int

ivb_update_colorkey(struct drm_plane *plane,

		    struct drm_intel_sprite_colorkey *key)

{

	struct drm_device *dev = plane->dev;

	struct drm_i915_private *dev_priv = dev->dev_private;

	struct intel_plane *intel_plane;

	u32 sprctl;

	int ret = 0;



	intel_plane = to_intel_plane(plane);



	I915_WRITE(SPRKEYVAL(intel_plane->pipe), key->min_value);

	I915_WRITE(SPRKEYMAX(intel_plane->pipe), key->max_value);

	I915_WRITE(SPRKEYMSK(intel_plane->pipe), key->channel_mask);



	sprctl = I915_READ(SPRCTL(intel_plane->pipe));

	sprctl &= ~(SPRITE_SOURCE_KEY | SPRITE_DEST_KEY);

	if (key->flags & I915_SET_COLORKEY_DESTINATION)

		sprctl |= SPRITE_DEST_KEY;

	else if (key->flags & I915_SET_COLORKEY_SOURCE)

		sprctl |= SPRITE_SOURCE_KEY;

	I915_WRITE(SPRCTL(intel_plane->pipe), sprctl);



	POSTING_READ(SPRKEYMSK(intel_plane->pipe));



	return ret;

}



static void

ivb_get_colorkey(struct drm_plane *plane, struct drm_intel_sprite_colorkey *key)

{

	struct drm_device *dev = plane->dev;

	struct drm_i915_private *dev_priv = dev->dev_private;

	struct intel_plane *intel_plane;

	u32 sprctl;



	intel_plane = to_intel_plane(plane);



	key->min_value = I915_READ(SPRKEYVAL(intel_plane->pipe));

	key->max_value = I915_READ(SPRKEYMAX(intel_plane->pipe));

	key->channel_mask = I915_READ(SPRKEYMSK(intel_plane->pipe));

	key->flags = 0;



	sprctl = I915_READ(SPRCTL(intel_plane->pipe));



	if (sprctl & SPRITE_DEST_KEY)

		key->flags = I915_SET_COLORKEY_DESTINATION;

	else if (sprctl & SPRITE_SOURCE_KEY)

		key->flags = I915_SET_COLORKEY_SOURCE;

	else

		key->flags = I915_SET_COLORKEY_NONE;

}



static void

snb_update_plane(struct drm_plane *plane, struct drm_framebuffer *fb,

		 struct drm_i915_gem_object *obj, int crtc_x, int crtc_y,
@@ -278,6 +333,60 @@ intel_disable_primary(struct drm_crtc *crtc) 
	I915_WRITE(reg, I915_READ(reg) & ~DISPLAY_PLANE_ENABLE);

}



static int

snb_update_colorkey(struct drm_plane *plane,

		    struct drm_intel_sprite_colorkey *key)

{

	struct drm_device *dev = plane->dev;

	struct drm_i915_private *dev_priv = dev->dev_private;

	struct intel_plane *intel_plane;

	u32 dvscntr;

	int ret = 0;



	intel_plane = to_intel_plane(plane);



	I915_WRITE(DVSKEYVAL(intel_plane->pipe), key->min_value);

	I915_WRITE(DVSKEYMAX(intel_plane->pipe), key->max_value);

	I915_WRITE(DVSKEYMSK(intel_plane->pipe), key->channel_mask);



	dvscntr = I915_READ(DVSCNTR(intel_plane->pipe));

	dvscntr &= ~(DVS_SOURCE_KEY | DVS_DEST_KEY);

	if (key->flags & I915_SET_COLORKEY_DESTINATION)

		dvscntr |= DVS_DEST_KEY;

	else if (key->flags & I915_SET_COLORKEY_SOURCE)

		dvscntr |= DVS_SOURCE_KEY;

	I915_WRITE(DVSCNTR(intel_plane->pipe), dvscntr);



	POSTING_READ(DVSKEYMSK(intel_plane->pipe));



	return ret;

}



static void

snb_get_colorkey(struct drm_plane *plane, struct drm_intel_sprite_colorkey *key)

{

	struct drm_device *dev = plane->dev;

	struct drm_i915_private *dev_priv = dev->dev_private;

	struct intel_plane *intel_plane;

	u32 dvscntr;



	intel_plane = to_intel_plane(plane);



	key->min_value = I915_READ(DVSKEYVAL(intel_plane->pipe));

	key->max_value = I915_READ(DVSKEYMAX(intel_plane->pipe));

	key->channel_mask = I915_READ(DVSKEYMSK(intel_plane->pipe));

	key->flags = 0;



	dvscntr = I915_READ(DVSCNTR(intel_plane->pipe));



	if (dvscntr & DVS_DEST_KEY)

		key->flags = I915_SET_COLORKEY_DESTINATION;

	else if (dvscntr & DVS_SOURCE_KEY)

		key->flags = I915_SET_COLORKEY_SOURCE;

	else

		key->flags = I915_SET_COLORKEY_NONE;

}



static int

intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,

		   struct drm_framebuffer *fb, int crtc_x, int crtc_y,
@@ -437,6 +546,70 @@ static void intel_destroy_plane(struct drm_plane *plane) 
	kfree(intel_plane);

}



int intel_sprite_set_colorkey(struct drm_device *dev, void *data,

			      struct drm_file *file_priv)

{

	struct drm_intel_sprite_colorkey *set = data;

	struct drm_i915_private *dev_priv = dev->dev_private;

	struct drm_mode_object *obj;

	struct drm_plane *plane;

	struct intel_plane *intel_plane;

	int ret = 0;



	if (!dev_priv)

		return -EINVAL;



	/* Make sure we don't try to enable both src & dest simultaneously */

	if ((set->flags & (I915_SET_COLORKEY_DESTINATION | I915_SET_COLORKEY_SOURCE)) == (I915_SET_COLORKEY_DESTINATION | I915_SET_COLORKEY_SOURCE))

		return -EINVAL;



	mutex_lock(&dev->mode_config.mutex);



	obj = drm_mode_object_find(dev, set->plane_id, DRM_MODE_OBJECT_PLANE);

	if (!obj) {

		ret = -EINVAL;

		goto out_unlock;

	}



	plane = obj_to_plane(obj);

	intel_plane = to_intel_plane(plane);

	ret = intel_plane->update_colorkey(plane, set);



out_unlock:

	mutex_unlock(&dev->mode_config.mutex);

	return ret;

}



int intel_sprite_get_colorkey(struct drm_device *dev, void *data,

			      struct drm_file *file_priv)

{

	struct drm_intel_sprite_colorkey *get = data;

	struct drm_i915_private *dev_priv = dev->dev_private;

	struct drm_mode_object *obj;

	struct drm_plane *plane;

	struct intel_plane *intel_plane;

	int ret = 0;



	if (!dev_priv)

		return -EINVAL;



	mutex_lock(&dev->mode_config.mutex);



	obj = drm_mode_object_find(dev, get->plane_id, DRM_MODE_OBJECT_PLANE);

	if (!obj) {

		ret = -EINVAL;

		goto out_unlock;

	}



	plane = obj_to_plane(obj);

	intel_plane = to_intel_plane(plane);

	intel_plane->get_colorkey(plane, get);



out_unlock:

	mutex_unlock(&dev->mode_config.mutex);

	return ret;

}



static const struct drm_plane_funcs intel_plane_funcs = {

	.update_plane = intel_update_plane,

	.disable_plane = intel_disable_plane,
@@ -472,10 +645,14 @@ intel_plane_init(struct drm_device *dev, enum pipe pipe) 
		intel_plane->max_downscale = 16;

		intel_plane->update_plane = snb_update_plane;

		intel_plane->disable_plane = snb_disable_plane;

		intel_plane->update_colorkey = snb_update_colorkey;

		intel_plane->get_colorkey = snb_get_colorkey;

	} else if (IS_GEN7(dev)) {

		intel_plane->max_downscale = 2;

		intel_plane->update_plane = ivb_update_plane;

		intel_plane->disable_plane = ivb_disable_plane;

		intel_plane->update_colorkey = ivb_update_colorkey;

		intel_plane->get_colorkey = ivb_get_colorkey;

	}



	intel_plane->pipe = pipe;

include/drm/i915_drm.h

+36 −0
Original line number Diff line number Diff line
@@ -198,6 +198,8 @@ typedef struct _drm_i915_sarea { 
#define DRM_I915_OVERLAY_PUT_IMAGE	0x27

#define DRM_I915_OVERLAY_ATTRS	0x28

#define DRM_I915_GEM_EXECBUFFER2	0x29

#define DRM_I915_GET_SPRITE_COLORKEY	0x2a

#define DRM_I915_SET_SPRITE_COLORKEY	0x2b



#define DRM_IOCTL_I915_INIT		DRM_IOW( DRM_COMMAND_BASE + DRM_I915_INIT, drm_i915_init_t)

#define DRM_IOCTL_I915_FLUSH		DRM_IO ( DRM_COMMAND_BASE + DRM_I915_FLUSH)
@@ -239,6 +241,8 @@ typedef struct _drm_i915_sarea { 
#define DRM_IOCTL_I915_GEM_MADVISE	DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_MADVISE, struct drm_i915_gem_madvise)

#define DRM_IOCTL_I915_OVERLAY_PUT_IMAGE	DRM_IOW(DRM_COMMAND_BASE + DRM_I915_OVERLAY_PUT_IMAGE, struct drm_intel_overlay_put_image)

#define DRM_IOCTL_I915_OVERLAY_ATTRS	DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_OVERLAY_ATTRS, struct drm_intel_overlay_attrs)

#define DRM_IOCTL_I915_SET_SPRITE_COLORKEY DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_SET_SPRITE_COLORKEY, struct drm_intel_sprite_colorkey)

#define DRM_IOCTL_I915_GET_SPRITE_COLORKEY DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_SET_SPRITE_COLORKEY, struct drm_intel_sprite_colorkey)



/* Allow drivers to submit batchbuffers directly to hardware, relying

 * on the security mechanisms provided by hardware.
@@ -844,4 +848,36 @@ struct drm_intel_overlay_attrs { 
	__u32 gamma5;

};



/*

 * Intel sprite handling

 *

 * Color keying works with a min/mask/max tuple.  Both source and destination

 * color keying is allowed.

 *

 * Source keying:

 * Sprite pixels within the min & max values, masked against the color channels

 * specified in the mask field, will be transparent.  All other pixels will

 * be displayed on top of the primary plane.  For RGB surfaces, only the min

 * and mask fields will be used; ranged compares are not allowed.

 *

 * Destination keying:

 * Primary plane pixels that match the min value, masked against the color

 * channels specified in the mask field, will be replaced by corresponding

 * pixels from the sprite plane.

 *

 * Note that source & destination keying are exclusive; only one can be

 * active on a given plane.

 */



#define I915_SET_COLORKEY_NONE		(1<<0) /* disable color key matching */

#define I915_SET_COLORKEY_DESTINATION	(1<<1)

#define I915_SET_COLORKEY_SOURCE	(1<<2)

struct drm_intel_sprite_colorkey {

	__u32 plane_id;

	__u32 min_value;

	__u32 channel_mask;

	__u32 max_value;

	__u32 flags;

};



#endif				/* _I915_DRM_H_ */

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