diff options
Diffstat (limited to 'drivers/gpu/drm/arm/display/komeda/komeda_plane.c')
| -rw-r--r-- | drivers/gpu/drm/arm/display/komeda/komeda_plane.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c index 0a4953a9a909..07ed0cc1bc44 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c @@ -7,10 +7,96 @@ #include <drm/drm_atomic.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_plane_helper.h> +#include <drm/drm_print.h> #include "komeda_dev.h" #include "komeda_kms.h" +static int +komeda_plane_init_data_flow(struct drm_plane_state *st, + struct komeda_data_flow_cfg *dflow) +{ + struct drm_framebuffer *fb = st->fb; + + memset(dflow, 0, sizeof(*dflow)); + + dflow->blending_zorder = st->zpos; + + /* if format doesn't have alpha, fix blend mode to PIXEL_NONE */ + dflow->pixel_blend_mode = fb->format->has_alpha ? + st->pixel_blend_mode : DRM_MODE_BLEND_PIXEL_NONE; + dflow->layer_alpha = st->alpha >> 8; + + dflow->out_x = st->crtc_x; + dflow->out_y = st->crtc_y; + dflow->out_w = st->crtc_w; + dflow->out_h = st->crtc_h; + + dflow->in_x = st->src_x >> 16; + dflow->in_y = st->src_y >> 16; + dflow->in_w = st->src_w >> 16; + dflow->in_h = st->src_h >> 16; + + return 0; +} + +/** + * komeda_plane_atomic_check - build input data flow + * @plane: DRM plane + * @state: the plane state object + * + * RETURNS: + * Zero for success or -errno + */ +static int +komeda_plane_atomic_check(struct drm_plane *plane, + struct drm_plane_state *state) +{ + struct komeda_plane *kplane = to_kplane(plane); + struct komeda_plane_state *kplane_st = to_kplane_st(state); + struct komeda_layer *layer = kplane->layer; + struct drm_crtc_state *crtc_st; + struct komeda_crtc *kcrtc; + struct komeda_crtc_state *kcrtc_st; + struct komeda_data_flow_cfg dflow; + int err; + + if (!state->crtc || !state->fb) + return 0; + + crtc_st = drm_atomic_get_crtc_state(state->state, state->crtc); + if (!crtc_st->enable) { + DRM_DEBUG_ATOMIC("Cannot update plane on a disabled CRTC.\n"); + return -EINVAL; + } + + /* crtc is inactive, skip the resource assignment */ + if (!crtc_st->active) + return 0; + + kcrtc = to_kcrtc(state->crtc); + kcrtc_st = to_kcrtc_st(crtc_st); + + err = komeda_plane_init_data_flow(state, &dflow); + if (err) + return err; + + err = komeda_build_layer_data_flow(layer, kplane_st, kcrtc_st, &dflow); + + return err; +} + +/* plane doesn't represent a real HW, so there is no HW update for plane. + * komeda handles all the HW update in crtc->atomic_flush + */ +static void +komeda_plane_atomic_update(struct drm_plane *plane, + struct drm_plane_state *old_state) +{ +} + static const struct drm_plane_helper_funcs komeda_plane_helper_funcs = { + .atomic_check = komeda_plane_atomic_check, + .atomic_update = komeda_plane_atomic_update, }; static void komeda_plane_destroy(struct drm_plane *plane) @@ -20,7 +106,60 @@ static void komeda_plane_destroy(struct drm_plane *plane) kfree(to_kplane(plane)); } +static void komeda_plane_reset(struct drm_plane *plane) +{ + struct komeda_plane_state *state; + struct komeda_plane *kplane = to_kplane(plane); + + if (plane->state) + __drm_atomic_helper_plane_destroy_state(plane->state); + + kfree(plane->state); + plane->state = NULL; + + state = kzalloc(sizeof(*state), GFP_KERNEL); + if (state) { + state->base.rotation = DRM_MODE_ROTATE_0; + state->base.pixel_blend_mode = DRM_MODE_BLEND_PREMULTI; + state->base.alpha = DRM_BLEND_ALPHA_OPAQUE; + state->base.zpos = kplane->layer->base.id; + plane->state = &state->base; + plane->state->plane = plane; + } +} + +static struct drm_plane_state * +komeda_plane_atomic_duplicate_state(struct drm_plane *plane) +{ + struct komeda_plane_state *new; + + if (WARN_ON(!plane->state)) + return NULL; + + new = kzalloc(sizeof(*new), GFP_KERNEL); + if (!new) + return NULL; + + __drm_atomic_helper_plane_duplicate_state(plane, &new->base); + + return &new->base; +} + +static void +komeda_plane_atomic_destroy_state(struct drm_plane *plane, + struct drm_plane_state *state) +{ + __drm_atomic_helper_plane_destroy_state(state); + kfree(to_kplane_st(state)); +} + static const struct drm_plane_funcs komeda_plane_funcs = { + .update_plane = drm_atomic_helper_update_plane, + .disable_plane = drm_atomic_helper_disable_plane, + .destroy = komeda_plane_destroy, + .reset = komeda_plane_reset, + .atomic_duplicate_state = komeda_plane_atomic_duplicate_state, + .atomic_destroy_state = komeda_plane_atomic_destroy_state, }; /* for komeda, which is pipeline can be share between crtcs */ |