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Groups > linux.kernel > #1413565

[PATCH v2 1/6] drm/fb_cma_helper: add suspend helper

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Implement a suspend/resume helper for CMA users which calls
drm_fb_helper_set_suspend.

Suggested-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Stefan Agner <stefan@agner.ch>
---
 drivers/gpu/drm/drm_fb_cma_helper.c | 15 +++++++++++++++
 include/drm/drm_fb_cma_helper.h     |  1 +
 2 files changed, 16 insertions(+)

diff --git a/drivers/gpu/drm/drm_fb_cma_helper.c b/drivers/gpu/drm/drm_fb_cma_helper.c
index 172cafe..6948d82 100644
--- a/drivers/gpu/drm/drm_fb_cma_helper.c
+++ b/drivers/gpu/drm/drm_fb_cma_helper.c
@@ -582,3 +582,18 @@ void drm_fbdev_cma_hotplug_event(struct drm_fbdev_cma *fbdev_cma)
 		drm_fb_helper_hotplug_event(&fbdev_cma->fb_helper);
 }
 EXPORT_SYMBOL_GPL(drm_fbdev_cma_hotplug_event);
+
+/**
+ * drm_fbdev_cma_set_suspend - wrapper around drm_fb_helper_set_suspend
+ * @fbdev_cma: The drm_fbdev_cma struct, may be NULL
+ * @state: desired state, zero to resume, non-zero to suspend
+ *
+ * Calls drm_fb_helper_set_suspend, which is a wrapper around
+ * fb_set_suspend implemented by fbdev core.
+ */
+void drm_fbdev_cma_set_suspend(struct drm_fbdev_cma *fbdev_cma, int state)
+{
+	if (fbdev_cma)
+		drm_fb_helper_set_suspend(&fbdev_cma->fb_helper, state);
+}
+EXPORT_SYMBOL(drm_fbdev_cma_set_suspend);
diff --git a/include/drm/drm_fb_cma_helper.h b/include/drm/drm_fb_cma_helper.h
index fd0dde9..f313211 100644
--- a/include/drm/drm_fb_cma_helper.h
+++ b/include/drm/drm_fb_cma_helper.h
@@ -23,6 +23,7 @@ void drm_fbdev_cma_fini(struct drm_fbdev_cma *fbdev_cma);
 
 void drm_fbdev_cma_restore_mode(struct drm_fbdev_cma *fbdev_cma);
 void drm_fbdev_cma_hotplug_event(struct drm_fbdev_cma *fbdev_cma);
+void drm_fbdev_cma_set_suspend(struct drm_fbdev_cma *fbdev_cma, int state);
 int drm_fbdev_cma_create_with_funcs(struct drm_fb_helper *helper,
 	struct drm_fb_helper_surface_size *sizes,
 	const struct drm_framebuffer_funcs *funcs);
-- 
2.8.2

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Thread

[PATCH v2 0/6] drm/fsl-dcu: suspend/resume rework using atomic helpers Stefan Agner <stefan@agner.ch> - 2016-06-04 01:00 +0200
  [PATCH v2 4/6] drm/fsl-dcu: use clk helpers Stefan Agner <stefan@agner.ch> - 2016-06-04 01:00 +0200
  [PATCH v2 1/6] drm/fb_cma_helper: add suspend helper Stefan Agner <stefan@agner.ch> - 2016-06-04 01:00 +0200
    Re: [PATCH v2 1/6] drm/fb_cma_helper: add suspend helper Daniel Vetter <daniel@ffwll.ch> - 2016-06-04 01:20 +0200
  [PATCH v2 2/6] drm/fsl-dcu: store layer registers in soc_data Stefan Agner <stefan@agner.ch> - 2016-06-04 01:00 +0200

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