File xf86-video-intel-git.diff of Package xorg-x11-driver-video

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File xf86-video-intel-git.diff of Package xorg-x11-driver-video (Revision 249bd5c27579a7b2a8abbdc714db22c6)

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commit e55d86f654aa9dd4951b441636c8ca4b37786daf
Author: Eric Anholt <eric@anholt.net>
Date:   Tue Feb 26 12:26:23 2008 -0800

Fix SDVO I2C access on Mac Mini in EFI mode.
    
    The GMBUS was being left in SDVO pin access mode, which blocked our bit-banging
    access to those pins.  Thanks to Peter Jones for quick debugging turnaround
    in getting this fixed.

diff --git a/src/i810_reg.h b/src/i810_reg.h
index 9eeddc9..d5b6805 100644
--- a/src/i810_reg.h
+++ b/src/i810_reg.h
@@ -290,6 +290,14 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 # define GPIO_DATA_VAL_IN		(1 << 12)
 # define GPIO_DATA_PULLUP_DISABLE	(1 << 13)
 
+/* GMBus registers for hardware-assisted (non-bitbanging) I2C access */
+#define GMBUS0			0x5100
+#define GMBUS1			0x5104
+#define GMBUS2			0x5108
+#define GMBUS3			0x510c
+#define GMBUS4			0x5110
+#define GMBUS5			0x5120
+
 /* p317, 319
  */
 #define VCLK2_VCO_M        0x6008 /* treat as 16 bit? (includes msbs) */
diff --git a/src/i830_i2c.c b/src/i830_i2c.c
index d80229d..33a75a8 100644
--- a/src/i830_i2c.c
+++ b/src/i830_i2c.c
@@ -346,6 +346,7 @@ Bool
 I830I2CInit(ScrnInfoPtr pScrn, I2CBusPtr *bus_ptr, int i2c_reg, char *name)
 {
     I2CBusPtr pI2CBus;
+    I830Ptr pI830 = I830PTR(pScrn);
 
     pI2CBus = xf86CreateI2CBusRec();
 
@@ -379,6 +380,12 @@ I830I2CInit(ScrnInfoPtr pScrn, I2CBusPtr *bus_ptr, int i2c_reg, char *name)
     pI2CBus->AcknTimeout = 40;
     pI2CBus->RiseFallTime = 20;
 
+    /* Disable the GMBUS, which we won't use.  If it is left enabled (for
+     * example, by Mac Mini EFI initialization), GPIO access to the pins it
+     * uses gets disabled.
+     */
+    OUTREG(GMBUS0, 0);
+
     if (!xf86I2CBusInit(pI2CBus))
 	return FALSE;
 
commit 02a3b80ee8341968dbce5b7cb871b187db5ff805
Author: Zhenyu Wang <zhenyu.z.wang@intel.com>
Date:   Fri Feb 29 11:13:34 2008 +0800

Bug 14591: comment out MI_DISPLAY_POWER_DOWN as for 965GM only

diff --git a/src/i830_debug.c b/src/i830_debug.c
index 7d0c0a0..f589de7 100644
--- a/src/i830_debug.c
+++ b/src/i830_debug.c
@@ -623,7 +623,7 @@ static struct i830SnapshotRec {
     DEFINEREG(TV_H_CHROMA_59),
 
     DEFINEREG(MI_MODE),
-    DEFINEREG(MI_DISPLAY_POWER_DOWN),
+    /* DEFINEREG(MI_DISPLAY_POWER_DOWN), CRL only */
     DEFINEREG(MI_ARB_STATE),
     DEFINEREG(MI_RDRET_STATE),
     DEFINEREG(ECOSKPD),

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File xf86-video-intel-git.diff of Package xorg-x11-driver-video (Revision 249bd5c27579a7b2a8abbdc714db22c6)

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