Add a custom CRTC state struct to enable storing driver-private per-CRTC state. This patch only adds the base drm_crtc_state struct.
Signed-off-by: Mihail Atanassov <mihail.atanas...@arm.com> Reviewed-by: Brian Starkey <brian.star...@arm.com> --- Link to v1: https://lkml.org/lkml/2017/2/1/203 Changes since v1: - Moved unused variable to patch 2/2, where it is used. drivers/gpu/drm/arm/malidp_crtc.c | 37 +++++++++++++++++++++++++++++++++++-- drivers/gpu/drm/arm/malidp_drv.h | 6 ++++++ 2 files changed, 41 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/arm/malidp_crtc.c b/drivers/gpu/drm/arm/malidp_crtc.c index 08e6a71..ebf57e6 100644 --- a/drivers/gpu/drm/arm/malidp_crtc.c +++ b/drivers/gpu/drm/arm/malidp_crtc.c @@ -160,6 +160,39 @@ static int malidp_crtc_atomic_check(struct drm_crtc *crtc, return 0; } +static struct drm_crtc_state *malidp_crtc_duplicate_state(struct drm_crtc *crtc) +{ + struct malidp_crtc_state *state; + + if (WARN_ON(!crtc->state)) + return NULL; + + state = kmalloc(sizeof(*state), GFP_KERNEL); + if (!state) + return NULL; + + __drm_atomic_helper_crtc_duplicate_state(crtc, &state->base); + + return &state->base; +} + +static void malidp_crtc_reset(struct drm_crtc *crtc) +{ + struct malidp_crtc_state *cs = (crtc->state) ? + to_malidp_crtc_state(crtc->state) : NULL; + + if (crtc->state) + __drm_atomic_helper_crtc_destroy_state(crtc->state); + + kfree(cs); + cs = kzalloc(sizeof(*cs), GFP_KERNEL); + if (!cs) + return; + + crtc->state = &cs->base; + crtc->state->crtc = crtc; +} + static const struct drm_crtc_helper_funcs malidp_crtc_helper_funcs = { .mode_fixup = malidp_crtc_mode_fixup, .enable = malidp_crtc_enable, @@ -171,8 +204,8 @@ static int malidp_crtc_atomic_check(struct drm_crtc *crtc, .destroy = drm_crtc_cleanup, .set_config = drm_atomic_helper_set_config, .page_flip = drm_atomic_helper_page_flip, - .reset = drm_atomic_helper_crtc_reset, - .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, + .reset = malidp_crtc_reset, + .atomic_duplicate_state = malidp_crtc_duplicate_state, .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, }; diff --git a/drivers/gpu/drm/arm/malidp_drv.h b/drivers/gpu/drm/arm/malidp_drv.h index 9fc8a2e..c7a69ae 100644 --- a/drivers/gpu/drm/arm/malidp_drv.h +++ b/drivers/gpu/drm/arm/malidp_drv.h @@ -47,6 +47,12 @@ struct malidp_plane_state { #define to_malidp_plane(x) container_of(x, struct malidp_plane, base) #define to_malidp_plane_state(x) container_of(x, struct malidp_plane_state, base) +struct malidp_crtc_state { + struct drm_crtc_state base; +}; + +#define to_malidp_crtc_state(x) container_of(x, struct malidp_crtc_state, base) + int malidp_de_planes_init(struct drm_device *drm); void malidp_de_planes_destroy(struct drm_device *drm); int malidp_crtc_init(struct drm_device *drm); -- 1.9.1 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
