From 7d26097b4beb802fb6ce7cd6389ac4bf12b1a6ae Mon Sep 17 00:00:00 2001 From: Maarten Lankhorst Date: Fri, 1 Mar 2019 13:56:12 +0100 Subject: drm/atomic: Create __drm_atomic_helper_crtc_reset() for subclassing crtc_state. We already have __drm_atomic_helper_connector_reset() and __drm_atomic_helper_plane_reset(), extend this to crtc as well. This will allow us to set default values in the crtc_state, without having to do it in each driver separately. Of all drivers that need conversion, only nouveau is done in this commit, because it wrote its own __drm_atomic_helper_crtc_reset(), clashing with the drm core. Signed-off-by: Maarten Lankhorst Cc: Ben Skeggs Reviewed-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20190301125627.7285-3-maarten.lankhorst@linux.intel.com --- drivers/gpu/drm/drm_atomic_state_helper.c | 34 +++++++++++++++++++++++++------ drivers/gpu/drm/nouveau/dispnv50/head.c | 13 +++--------- 2 files changed, 31 insertions(+), 16 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/drm_atomic_state_helper.c b/drivers/gpu/drm/drm_atomic_state_helper.c index 59ffb6b9c745..06a97a268e81 100644 --- a/drivers/gpu/drm/drm_atomic_state_helper.c +++ b/drivers/gpu/drm/drm_atomic_state_helper.c @@ -56,6 +56,29 @@ * for these functions. */ +/** + * __drm_atomic_helper_crtc_reset - reset state on CRTC + * @crtc: drm CRTC + * @crtc_state: CRTC state to assign + * + * Initializes the newly allocated @crtc_state and assigns it to + * the &drm_crtc->state pointer of @crtc, usually required when + * initializing the drivers or when called from the &drm_crtc_funcs.reset + * hook. + * + * This is useful for drivers that subclass the CRTC state. + */ +void +__drm_atomic_helper_crtc_reset(struct drm_crtc *crtc, + struct drm_crtc_state *crtc_state) +{ + if (crtc_state) + crtc_state->crtc = crtc; + + crtc->state = crtc_state; +} +EXPORT_SYMBOL(__drm_atomic_helper_crtc_reset); + /** * drm_atomic_helper_crtc_reset - default &drm_crtc_funcs.reset hook for CRTCs * @crtc: drm CRTC @@ -65,14 +88,13 @@ */ void drm_atomic_helper_crtc_reset(struct drm_crtc *crtc) { - if (crtc->state) - __drm_atomic_helper_crtc_destroy_state(crtc->state); - - kfree(crtc->state); - crtc->state = kzalloc(sizeof(*crtc->state), GFP_KERNEL); + struct drm_crtc_state *crtc_state = + kzalloc(sizeof(*crtc->state), GFP_KERNEL); if (crtc->state) - crtc->state->crtc = crtc; + crtc->funcs->atomic_destroy_state(crtc, crtc->state); + + __drm_atomic_helper_crtc_reset(crtc, crtc_state); } EXPORT_SYMBOL(drm_atomic_helper_crtc_reset); diff --git a/drivers/gpu/drm/nouveau/dispnv50/head.c b/drivers/gpu/drm/nouveau/dispnv50/head.c index 2e7a0c347ddb..93754743090f 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/head.c +++ b/drivers/gpu/drm/nouveau/dispnv50/head.c @@ -419,16 +419,6 @@ nv50_head_atomic_duplicate_state(struct drm_crtc *crtc) return &asyh->state; } -static void -__drm_atomic_helper_crtc_reset(struct drm_crtc *crtc, - struct drm_crtc_state *state) -{ - if (crtc->state) - crtc->funcs->atomic_destroy_state(crtc, crtc->state); - crtc->state = state; - crtc->state->crtc = crtc; -} - static void nv50_head_reset(struct drm_crtc *crtc) { @@ -437,6 +427,9 @@ nv50_head_reset(struct drm_crtc *crtc) if (WARN_ON(!(asyh = kzalloc(sizeof(*asyh), GFP_KERNEL)))) return; + if (crtc->state) + nv50_head_atomic_destroy_state(crtc, crtc->state); + __drm_atomic_helper_crtc_reset(crtc, &asyh->state); } -- cgit v1.2.3