This is a note to let you know that I've just added the patch titled
drm: bochs: add power management support
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-bochs-add-power-management-support.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b8ccd70f1363f7d4e49219dbc46ec973a14f49cd Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kraxel@xxxxxxxxxx>
Date: Mon, 14 Apr 2014 11:34:49 +0200
Subject: drm: bochs: add power management support
From: Gerd Hoffmann <kraxel@xxxxxxxxxx>
commit b8ccd70f1363f7d4e49219dbc46ec973a14f49cd upstream.
bochs kms driver lacks power management support, thus
the vga display doesn't work any more after S3 resume.
Fix this by adding suspend and resume functions.
Signed-off-by: Gerd Hoffmann <kraxel@xxxxxxxxxx>
Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/bochs/bochs.h | 1
drivers/gpu/drm/bochs/bochs_drv.c | 44 ++++++++++++++++++++++++++++++++++++++
2 files changed, 45 insertions(+)
--- a/drivers/gpu/drm/bochs/bochs.h
+++ b/drivers/gpu/drm/bochs/bochs.h
@@ -1,5 +1,6 @@
#include <linux/io.h>
#include <linux/fb.h>
+#include <linux/console.h>
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
--- a/drivers/gpu/drm/bochs/bochs_drv.c
+++ b/drivers/gpu/drm/bochs/bochs_drv.c
@@ -95,6 +95,49 @@ static struct drm_driver bochs_driver =
};
/* ---------------------------------------------------------------------- */
+/* pm interface */
+
+static int bochs_pm_suspend(struct device *dev)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct drm_device *drm_dev = pci_get_drvdata(pdev);
+ struct bochs_device *bochs = drm_dev->dev_private;
+
+ drm_kms_helper_poll_disable(drm_dev);
+
+ if (bochs->fb.initialized) {
+ console_lock();
+ fb_set_suspend(bochs->fb.helper.fbdev, 1);
+ console_unlock();
+ }
+
+ return 0;
+}
+
+static int bochs_pm_resume(struct device *dev)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct drm_device *drm_dev = pci_get_drvdata(pdev);
+ struct bochs_device *bochs = drm_dev->dev_private;
+
+ drm_helper_resume_force_mode(drm_dev);
+
+ if (bochs->fb.initialized) {
+ console_lock();
+ fb_set_suspend(bochs->fb.helper.fbdev, 0);
+ console_unlock();
+ }
+
+ drm_kms_helper_poll_enable(drm_dev);
+ return 0;
+}
+
+static const struct dev_pm_ops bochs_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(bochs_pm_suspend,
+ bochs_pm_resume)
+};
+
+/* ---------------------------------------------------------------------- */
/* pci interface */
static int bochs_kick_out_firmware_fb(struct pci_dev *pdev)
@@ -155,6 +198,7 @@ static struct pci_driver bochs_pci_drive
.id_table = bochs_pci_tbl,
.probe = bochs_pci_probe,
.remove = bochs_pci_remove,
+ .driver.pm = &bochs_pm_ops,
};
/* ---------------------------------------------------------------------- */
Patches currently in stable-queue which might be from kraxel@xxxxxxxxxx are
queue-3.14/drm-cirrus-add-power-management-support.patch
queue-3.14/drm-bochs-add-power-management-support.patch
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