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drm/ofdrm: Add CRTC state

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

v3:
	* rework CRTC state helpers (Javier)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221011150712.3928-3-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2022-10-11 17:07:09 +02:00
parent c8a17756c4
commit 4113744354
1 changed files with 56 additions and 3 deletions
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59
drivers/gpu/drm/tiny/ofdrm.c
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@ -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)