linux-kernel - [PATCH 1/9] drm/fb-cma-helper: Add drm_fbdev_cma_set_suspend

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Date:   Sun, 22 Jan 2017 19:11:09 +0100
From:   Noralf Trønnes <noralf@...nnes.org>
To:     dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org
Cc:     thomas.petazzoni@...e-electrons.com, linux-kernel@...r.kernel.org,
        Noralf Trønnes <noralf@...nnes.org>,
        laurent.pinchart@...asonboard.com
Subject: [PATCH 1/9] drm/fb-cma-helper: Add drm_fbdev_cma_set_suspend_unlocked()

Add a CMA version of drm_fb_helper_set_suspend_unlocked().

Cc: laurent.pinchart@...asonboard.com
Signed-off-by: Noralf Trønnes <noralf@...nnes.org>
---
 drivers/gpu/drm/drm_fb_cma_helper.c | 18 ++++++++++++++++++
 include/drm/drm_fb_cma_helper.h     |  2 ++
 2 files changed, 20 insertions(+)

diff --git a/drivers/gpu/drm/drm_fb_cma_helper.c b/drivers/gpu/drm/drm_fb_cma_helper.c
index 4364abf..0ef8b28 100644
--- a/drivers/gpu/drm/drm_fb_cma_helper.c
+++ b/drivers/gpu/drm/drm_fb_cma_helper.c
@@ -622,3 +622,21 @@ void drm_fbdev_cma_set_suspend(struct drm_fbdev_cma *fbdev_cma, int state)
 		drm_fb_helper_set_suspend(&fbdev_cma->fb_helper, state);
 }
 EXPORT_SYMBOL(drm_fbdev_cma_set_suspend);
+
+/**
+ * drm_fbdev_cma_set_suspend_unlocked - wrapper around
+ *                                      drm_fb_helper_set_suspend_unlocked
+ * @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_unlocked(struct drm_fbdev_cma *fbdev_cma,
+					int state)
+{
+	if (fbdev_cma)
+		drm_fb_helper_set_suspend_unlocked(&fbdev_cma->fb_helper,
+						   state);
+}
+EXPORT_SYMBOL(drm_fbdev_cma_set_suspend_unlocked);
diff --git a/include/drm/drm_fb_cma_helper.h b/include/drm/drm_fb_cma_helper.h
index 9f4e34e..8dd6e55 100644
--- a/include/drm/drm_fb_cma_helper.h
+++ b/include/drm/drm_fb_cma_helper.h
@@ -26,6 +26,8 @@ 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);
+void drm_fbdev_cma_set_suspend_unlocked(struct drm_fbdev_cma *fbdev_cma,
+					int state);
 
 void drm_fb_cma_destroy(struct drm_framebuffer *fb);
 int drm_fb_cma_create_handle(struct drm_framebuffer *fb,
-- 
2.10.2