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drm/komeda: Convert to atomic_create_state

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The komeda crtc implementation provides a custom reset hook. However,
this hook only allocates the state, initializes it with
__drm_atomic_helper_crtc_reset(), and frees the previous state. It
does not perform any hardware reset.

Since this is exactly what the atomic_create_state hook is meant to
do, minus the old state cleanup which the caller handles, convert the
implementation to use atomic_create_state with
__drm_atomic_helper_crtc_state_init() instead.

Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patch.msgid.link/20260821-drm-no-more-crtc-reset-v1-45-fb793475c05a@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
This commit is contained in:
Maxime Ripard 2026-08-21 16:39:21 +02:00
parent 4dcd9f545e
commit 902a278a72
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GPG Key ID: 275FCE19A23DBE76
1 changed files with 8 additions and 10 deletions
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18
drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
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@ -493,19 +493,17 @@ static const struct drm_crtc_helper_funcs komeda_crtc_helper_funcs = {
.mode_fixup = komeda_crtc_mode_fixup,
};
static void komeda_crtc_reset(struct drm_crtc *crtc)
static struct drm_crtc_state *komeda_crtc_create_state(struct drm_crtc *crtc)
{
struct komeda_crtc_state *state;
if (crtc->state)
__drm_atomic_helper_crtc_destroy_state(crtc->state);
kfree(to_kcrtc_st(crtc->state));
crtc->state = NULL;
state = kzalloc_obj(*state);
if (state)
__drm_atomic_helper_crtc_reset(crtc, &state->base);
if (!state)
return ERR_PTR(-ENOMEM);
__drm_atomic_helper_crtc_state_init(&state->base, crtc);
return &state->base;
}
static struct drm_crtc_state *
@ -555,7 +553,7 @@ static const struct drm_crtc_funcs komeda_crtc_funcs = {
.destroy = drm_crtc_cleanup,
.set_config = drm_atomic_helper_set_config,
.page_flip = drm_atomic_helper_page_flip,
.reset = komeda_crtc_reset,
.atomic_create_state = komeda_crtc_create_state,
.atomic_duplicate_state = komeda_crtc_atomic_duplicate_state,
.atomic_destroy_state = komeda_crtc_atomic_destroy_state,
.enable_vblank = komeda_crtc_vblank_enable,