Mesa (mesa_7_7_branch): st/xorg: Export helper function for detecting modesetting

[Jakob Bornecrantz]

Module: Mesa
Branch: mesa_7_7_branch
Commit: 36fd55f9f03b00263ee1ccf22bbb50e5ba048e80
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=36fd55f9f03b00263ee1ccf22bbb50e5ba048e80

Author: Jakob Bornecrantz <jakob at vmware.com>
Date:   Thu Jan 21 21:23:22 2010 +0100

st/xorg: Export helper function for detecting modesetting

---

 src/gallium/state_trackers/xorg/xorg_driver.c |   22 ++++++++++++++++++++++
 src/gallium/state_trackers/xorg/xorg_winsys.h |    1 +
 2 files changed, 23 insertions(+), 0 deletions(-)

diff --git a/src/gallium/state_trackers/xorg/xorg_driver.c b/src/gallium/state_trackers/xorg/xorg_driver.c
index 41bfcd0..c180f0b 100644
--- a/src/gallium/state_trackers/xorg/xorg_driver.c
+++ b/src/gallium/state_trackers/xorg/xorg_driver.c
@@ -110,6 +110,28 @@ xorg_tracker_set_functions(ScrnInfoPtr scrn)
     scrn->ValidMode = drv_valid_mode;
 }
 
+Bool
+xorg_tracker_have_modesetting(ScrnInfoPtr pScrn, struct pci_device *device)
+{
+    char *BusID = xalloc(64);
+    sprintf(BusID, "pci:%04x:%02x:%02x.%d",
+	    device->domain, device->bus,
+	    device->dev, device->func);
+
+    if (drmCheckModesettingSupported(BusID)) {
+	xf86DrvMsgVerb(pScrn->scrnIndex, X_INFO, 0,
+		       "Drm modesetting not supported %s\n", BusID);
+	xfree(BusID);
+	return FALSE;
+    }
+
+    xf86DrvMsgVerb(pScrn->scrnIndex, X_INFO, 0,
+		   "Drm modesetting supported on %s\n", BusID);
+
+    xfree(BusID);
+    return TRUE;
+}
+
 
 /*
  * Internal function definitions
diff --git a/src/gallium/state_trackers/xorg/xorg_winsys.h b/src/gallium/state_trackers/xorg/xorg_winsys.h
index 47ee4b9..865733b 100644
--- a/src/gallium/state_trackers/xorg/xorg_winsys.h
+++ b/src/gallium/state_trackers/xorg/xorg_winsys.h
@@ -45,5 +45,6 @@
 
 void xorg_tracker_set_functions(ScrnInfoPtr scrn);
 const OptionInfoRec * xorg_tracker_available_options(int chipid, int busid);
+Bool xorg_tracker_have_modesetting(ScrnInfoPtr pScrn, struct pci_device *device);
 
 #endif