From 29ad20b22c8f3ab35e91c2f68b4c7956cee30fd0 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Noralf=20Tr=C3=B8nnes?= Date: Mon, 30 Oct 2017 16:39:38 +0100 Subject: [PATCH] drm: Add drm_device->fb_helper pointer MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit drm_fb_helper is *the* way of doing fbdev emulation so add a pointer to struct drm_device. This makes it possible to add callback helpers for .last_close and .output_poll_changed further reducing fbdev emulation footprint in drivers. The pointer is set by drm_fb_helper_init() and cleared by drm_fb_helper_fini(). Signed-off-by: Noralf Trønnes Reviewed-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20171030153951.56269-3-noralf@tronnes.org --- drivers/gpu/drm/drm_fb_helper.c | 13 +++++++++++-- include/drm/drm_device.h | 9 +++++++++ 2 files changed, 20 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 954cdd4..19aaca9 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -799,8 +799,10 @@ int drm_fb_helper_init(struct drm_device *dev, struct drm_mode_config *config = &dev->mode_config; int i; - if (!drm_fbdev_emulation) + if (!drm_fbdev_emulation) { + dev->fb_helper = fb_helper; return 0; + } if (!max_conn_count) return -EINVAL; @@ -835,6 +837,8 @@ int drm_fb_helper_init(struct drm_device *dev, i++; } + dev->fb_helper = fb_helper; + return 0; out_free: drm_fb_helper_crtc_free(fb_helper); @@ -913,7 +917,12 @@ void drm_fb_helper_fini(struct drm_fb_helper *fb_helper) { struct fb_info *info; - if (!drm_fbdev_emulation || !fb_helper) + if (!fb_helper) + return; + + fb_helper->dev->fb_helper = NULL; + + if (!drm_fbdev_emulation) return; cancel_work_sync(&fb_helper->resume_work); diff --git a/include/drm/drm_device.h b/include/drm/drm_device.h index e21af87..7c4fa32 100644 --- a/include/drm/drm_device.h +++ b/include/drm/drm_device.h @@ -17,6 +17,7 @@ struct drm_vblank_crtc; struct drm_sg_mem; struct drm_local_map; struct drm_vma_offset_manager; +struct drm_fb_helper; struct inode; @@ -185,6 +186,14 @@ struct drm_device { struct drm_vma_offset_manager *vma_offset_manager; /*@} */ int switch_power_state; + + /** + * @fb_helper: + * + * Pointer to the fbdev emulation structure. + * Set by drm_fb_helper_init() and cleared by drm_fb_helper_fini(). + */ + struct drm_fb_helper *fb_helper; }; #endif -- 2.7.4