diff options
Diffstat (limited to 'meta-moblin/packages/linux/linux-moblin-2.6.29.1/linux-2.6.29-pnv-fix-i2c.patch')
| -rw-r--r-- | meta-moblin/packages/linux/linux-moblin-2.6.29.1/linux-2.6.29-pnv-fix-i2c.patch | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/meta-moblin/packages/linux/linux-moblin-2.6.29.1/linux-2.6.29-pnv-fix-i2c.patch b/meta-moblin/packages/linux/linux-moblin-2.6.29.1/linux-2.6.29-pnv-fix-i2c.patch new file mode 100644 index 000000000..00a6cf481 --- /dev/null +++ b/meta-moblin/packages/linux/linux-moblin-2.6.29.1/linux-2.6.29-pnv-fix-i2c.patch @@ -0,0 +1,38 @@ +In IGD, DPCUNIT_CLOCK_GATE_DISABLE bit should be set, otherwise i2c +access will be wrong. + +Signed-off-by: Shaohua Li <shaohua.li@intel.com> +--- + drivers/gpu/drm/i915/i915_reg.h | 1 + + drivers/gpu/drm/i915/intel_display.c | 5 +++++ + 2 files changed, 6 insertions(+) + +Index: linux/drivers/gpu/drm/i915/i915_reg.h +=================================================================== +--- linux.orig/drivers/gpu/drm/i915/i915_reg.h 2009-03-16 14:18:27.000000000 +0800 ++++ linux/drivers/gpu/drm/i915/i915_reg.h 2009-03-16 14:28:09.000000000 +0800 +@@ -523,6 +523,7 @@ + #define DPLLA_INPUT_BUFFER_ENABLE (1 << 0) + #define D_STATE 0x6104 + #define CG_2D_DIS 0x6200 ++#define DPCUNIT_CLOCK_GATE_DISABLE (1 << 24) + #define CG_3D_DIS 0x6204 + + /* +Index: linux/drivers/gpu/drm/i915/intel_display.c +=================================================================== +--- linux.orig/drivers/gpu/drm/i915/intel_display.c 2009-03-16 14:16:11.000000000 +0800 ++++ linux/drivers/gpu/drm/i915/intel_display.c 2009-03-16 14:27:46.000000000 +0800 +@@ -1545,6 +1545,11 @@ static void intel_setup_outputs(struct d + struct drm_i915_private *dev_priv = dev->dev_private; + struct drm_connector *connector; + ++ /* When using bit bashing for I2C, this bit needs to be set to 1 */ ++ if (IS_IGD(dev)) ++ I915_WRITE(CG_2D_DIS, ++ I915_READ(CG_2D_DIS) | DPCUNIT_CLOCK_GATE_DISABLE); ++ + intel_crt_init(dev); + + /* Set up integrated LVDS */ + |