From d9be05b784225e68cf0c9b95180d3081b4663745 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Tue, 6 Nov 2018 21:16:24 +0200 Subject: [PATCH] drm/atomic: Use explicit old/new state in drm_atomic_plane_check() MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Convert drm_atomic_plane_check() over to using explicit old vs. new plane states. Avoids the confusion of "what does plane->state mean again?". v2: Stick to the multi-stage logic in plane_switching_crtc() (Daniel) Signed-off-by: Ville Syrjälä Reviewed-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20181106191624.2207-1-ville.syrjala@linux.intel.com --- drivers/gpu/drm/drm_atomic.c | 85 +++++++++++++++++++----------------- 1 file changed, 46 insertions(+), 39 deletions(-) diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index 4e961b03f161..a16dc34b62c5 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -487,14 +487,13 @@ drm_atomic_get_plane_state(struct drm_atomic_state *state, EXPORT_SYMBOL(drm_atomic_get_plane_state); static bool -plane_switching_crtc(struct drm_atomic_state *state, - struct drm_plane *plane, - struct drm_plane_state *plane_state) +plane_switching_crtc(const struct drm_plane_state *old_plane_state, + const struct drm_plane_state *new_plane_state) { - if (!plane->state->crtc || !plane_state->crtc) + if (!old_plane_state->crtc || !new_plane_state->crtc) return false; - if (plane->state->crtc == plane_state->crtc) + if (old_plane_state->crtc == new_plane_state->crtc) return false; /* This could be refined, but currently there's no helper or driver code @@ -507,88 +506,95 @@ plane_switching_crtc(struct drm_atomic_state *state, /** * drm_atomic_plane_check - check plane state - * @plane: plane to check - * @state: plane state to check + * @old_plane_state: old plane state to check + * @new_plane_state: new plane state to check * * Provides core sanity checks for plane state. * * RETURNS: * Zero on success, error code on failure */ -static int drm_atomic_plane_check(struct drm_plane *plane, - struct drm_plane_state *state) +static int drm_atomic_plane_check(const struct drm_plane_state *old_plane_state, + const struct drm_plane_state *new_plane_state) { + struct drm_plane *plane = new_plane_state->plane; + struct drm_crtc *crtc = new_plane_state->crtc; + const struct drm_framebuffer *fb = new_plane_state->fb; unsigned int fb_width, fb_height; int ret; /* either *both* CRTC and FB must be set, or neither */ - if (state->crtc && !state->fb) { + if (crtc && !fb) { DRM_DEBUG_ATOMIC("[PLANE:%d:%s] CRTC set but no FB\n", plane->base.id, plane->name); return -EINVAL; - } else if (state->fb && !state->crtc) { + } else if (fb && !crtc) { DRM_DEBUG_ATOMIC("[PLANE:%d:%s] FB set but no CRTC\n", plane->base.id, plane->name); return -EINVAL; } /* if disabled, we don't care about the rest of the state: */ - if (!state->crtc) + if (!crtc) return 0; /* Check whether this plane is usable on this CRTC */ - if (!(plane->possible_crtcs & drm_crtc_mask(state->crtc))) { + if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) { DRM_DEBUG_ATOMIC("Invalid [CRTC:%d:%s] for [PLANE:%d:%s]\n", - state->crtc->base.id, state->crtc->name, + crtc->base.id, crtc->name, plane->base.id, plane->name); return -EINVAL; } /* Check whether this plane supports the fb pixel format. */ - ret = drm_plane_check_pixel_format(plane, state->fb->format->format, - state->fb->modifier); + ret = drm_plane_check_pixel_format(plane, fb->format->format, + fb->modifier); if (ret) { struct drm_format_name_buf format_name; DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid pixel format %s, modifier 0x%llx\n", plane->base.id, plane->name, - drm_get_format_name(state->fb->format->format, + drm_get_format_name(fb->format->format, &format_name), - state->fb->modifier); + fb->modifier); return ret; } /* Give drivers some help against integer overflows */ - if (state->crtc_w > INT_MAX || - state->crtc_x > INT_MAX - (int32_t) state->crtc_w || - state->crtc_h > INT_MAX || - state->crtc_y > INT_MAX - (int32_t) state->crtc_h) { + if (new_plane_state->crtc_w > INT_MAX || + new_plane_state->crtc_x > INT_MAX - (int32_t) new_plane_state->crtc_w || + new_plane_state->crtc_h > INT_MAX || + new_plane_state->crtc_y > INT_MAX - (int32_t) new_plane_state->crtc_h) { DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid CRTC coordinates %ux%u+%d+%d\n", plane->base.id, plane->name, - state->crtc_w, state->crtc_h, - state->crtc_x, state->crtc_y); + new_plane_state->crtc_w, new_plane_state->crtc_h, + new_plane_state->crtc_x, new_plane_state->crtc_y); return -ERANGE; } - fb_width = state->fb->width << 16; - fb_height = state->fb->height << 16; + fb_width = fb->width << 16; + fb_height = fb->height << 16; /* Make sure source coordinates are inside the fb. */ - if (state->src_w > fb_width || - state->src_x > fb_width - state->src_w || - state->src_h > fb_height || - state->src_y > fb_height - state->src_h) { + if (new_plane_state->src_w > fb_width || + new_plane_state->src_x > fb_width - new_plane_state->src_w || + new_plane_state->src_h > fb_height || + new_plane_state->src_y > fb_height - new_plane_state->src_h) { DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid source coordinates " "%u.%06ux%u.%06u+%u.%06u+%u.%06u (fb %ux%u)\n", plane->base.id, plane->name, - state->src_w >> 16, ((state->src_w & 0xffff) * 15625) >> 10, - state->src_h >> 16, ((state->src_h & 0xffff) * 15625) >> 10, - state->src_x >> 16, ((state->src_x & 0xffff) * 15625) >> 10, - state->src_y >> 16, ((state->src_y & 0xffff) * 15625) >> 10, - state->fb->width, state->fb->height); + new_plane_state->src_w >> 16, + ((new_plane_state->src_w & 0xffff) * 15625) >> 10, + new_plane_state->src_h >> 16, + ((new_plane_state->src_h & 0xffff) * 15625) >> 10, + new_plane_state->src_x >> 16, + ((new_plane_state->src_x & 0xffff) * 15625) >> 10, + new_plane_state->src_y >> 16, + ((new_plane_state->src_y & 0xffff) * 15625) >> 10, + fb->width, fb->height); return -ENOSPC; } - if (plane_switching_crtc(state->state, plane, state)) { + if (plane_switching_crtc(old_plane_state, new_plane_state)) { DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n", plane->base.id, plane->name); return -EINVAL; @@ -961,7 +967,8 @@ int drm_atomic_check_only(struct drm_atomic_state *state) struct drm_device *dev = state->dev; struct drm_mode_config *config = &dev->mode_config; struct drm_plane *plane; - struct drm_plane_state *plane_state; + struct drm_plane_state *old_plane_state; + struct drm_plane_state *new_plane_state; struct drm_crtc *crtc; struct drm_crtc_state *old_crtc_state; struct drm_crtc_state *new_crtc_state; @@ -971,8 +978,8 @@ int drm_atomic_check_only(struct drm_atomic_state *state) DRM_DEBUG_ATOMIC("checking %p\n", state); - for_each_new_plane_in_state(state, plane, plane_state, i) { - ret = drm_atomic_plane_check(plane, plane_state); + for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { + ret = drm_atomic_plane_check(old_plane_state, new_plane_state); if (ret) { DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n", plane->base.id, plane->name); -- 2.30.2