From 1edf0269f02dc7e295f3ca7bdd698e3dcf7350bf Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Tue, 25 Aug 2015 15:35:59 -0400 Subject: [PATCH] drm/fb-helper: atomic pan_display().. Signed-off-by: Rob Clark Signed-off-by: Daniel Vetter --- drivers/gpu/drm/drm_fb_helper.c | 57 +++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 0180fdd5da20..64fc5ca8fda2 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -1217,6 +1217,57 @@ int drm_fb_helper_set_par(struct fb_info *info) } EXPORT_SYMBOL(drm_fb_helper_set_par); +static int pan_display_atomic(struct fb_var_screeninfo *var, + struct fb_info *info) +{ + struct drm_fb_helper *fb_helper = info->par; + struct drm_device *dev = fb_helper->dev; + struct drm_atomic_state *state; + int i, ret; + + state = drm_atomic_state_alloc(dev); + if (!state) + return -ENOMEM; + + state->acquire_ctx = dev->mode_config.acquire_ctx; +retry: + for(i = 0; i < fb_helper->crtc_count; i++) { + struct drm_mode_set *mode_set; + + mode_set = &fb_helper->crtc_info[i].mode_set; + + mode_set->x = var->xoffset; + mode_set->y = var->yoffset; + + ret = __drm_atomic_helper_set_config(mode_set, state); + if (ret != 0) + goto fail; + } + + ret = drm_atomic_commit(state); + if (ret != 0) + goto fail; + + info->var.xoffset = var->xoffset; + info->var.yoffset = var->yoffset; + + return 0; + +fail: + if (ret == -EDEADLK) + goto backoff; + + drm_atomic_state_free(state); + + return ret; + +backoff: + drm_atomic_state_clear(state); + drm_atomic_legacy_backoff(state); + + goto retry; +} + /** * drm_fb_helper_pan_display - implementation for ->fb_pan_display * @var: updated screen information @@ -1240,6 +1291,11 @@ int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, return -EBUSY; } + if (fb_helper->atomic) { + ret = pan_display_atomic(var, info); + goto unlock; + } + for (i = 0; i < fb_helper->crtc_count; i++) { modeset = &fb_helper->crtc_info[i].mode_set; @@ -1254,6 +1310,7 @@ int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, } } } +unlock: drm_modeset_unlock_all(dev); return ret; } -- 2.20.1