Commit 41137443 authored by Thomas Zimmermann's avatar Thomas Zimmermann
Browse files

drm/ofdrm: Add CRTC state 



Add a dedicated CRTC state to ofdrm to later store information for
palette updates.

v3:
	* rework CRTC state helpers (Javier)

Signed-off-by: default avatarThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: default avatarJavier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221011150712.3928-3-tzimmermann@suse.de
parent c8a17756

drivers/gpu/drm/tiny/ofdrm.c

+56 −3
Original line number Diff line number Diff line
@@ -278,6 +278,21 @@ static struct resource *ofdrm_find_fb_resource(struct ofdrm_device *odev, 
 * Modesetting

 */



struct ofdrm_crtc_state {

	struct drm_crtc_state base;

};



static struct ofdrm_crtc_state *to_ofdrm_crtc_state(struct drm_crtc_state *base)

{

	return container_of(base, struct ofdrm_crtc_state, base);

}



static void ofdrm_crtc_state_destroy(struct ofdrm_crtc_state *ofdrm_crtc_state)

{

	__drm_atomic_helper_crtc_destroy_state(&ofdrm_crtc_state->base);

	kfree(ofdrm_crtc_state);

}



/*

 * Support all formats of OF display and maybe more; in order

 * of preference. The display's update function will do any
@@ -431,13 +446,51 @@ static const struct drm_crtc_helper_funcs ofdrm_crtc_helper_funcs = { 
	.atomic_check = ofdrm_crtc_helper_atomic_check,

};



static void ofdrm_crtc_reset(struct drm_crtc *crtc)

{

	struct ofdrm_crtc_state *ofdrm_crtc_state =

		kzalloc(sizeof(*ofdrm_crtc_state), GFP_KERNEL);



	if (crtc->state)

		ofdrm_crtc_state_destroy(to_ofdrm_crtc_state(crtc->state));



	if (ofdrm_crtc_state)

		__drm_atomic_helper_crtc_reset(crtc, &ofdrm_crtc_state->base);

	else

		__drm_atomic_helper_crtc_reset(crtc, NULL);

}



static struct drm_crtc_state *ofdrm_crtc_atomic_duplicate_state(struct drm_crtc *crtc)

{

	struct drm_device *dev = crtc->dev;

	struct drm_crtc_state *crtc_state = crtc->state;

	struct ofdrm_crtc_state *new_ofdrm_crtc_state;



	if (drm_WARN_ON(dev, !crtc_state))

		return NULL;



	new_ofdrm_crtc_state = kzalloc(sizeof(*new_ofdrm_crtc_state), GFP_KERNEL);

	if (!new_ofdrm_crtc_state)

		return NULL;



	__drm_atomic_helper_crtc_duplicate_state(crtc, &new_ofdrm_crtc_state->base);



	return &new_ofdrm_crtc_state->base;

}



static void ofdrm_crtc_atomic_destroy_state(struct drm_crtc *crtc,

					    struct drm_crtc_state *crtc_state)

{

	ofdrm_crtc_state_destroy(to_ofdrm_crtc_state(crtc_state));

}



static const struct drm_crtc_funcs ofdrm_crtc_funcs = {

	.reset = drm_atomic_helper_crtc_reset,

	.reset = ofdrm_crtc_reset,

	.destroy = drm_crtc_cleanup,

	.set_config = drm_atomic_helper_set_config,

	.page_flip = drm_atomic_helper_page_flip,

	.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,

	.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,

	.atomic_duplicate_state = ofdrm_crtc_atomic_duplicate_state,

	.atomic_destroy_state = ofdrm_crtc_atomic_destroy_state,

};



static int ofdrm_connector_helper_get_modes(struct drm_connector *connector)