Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[pandora-kernel.git] / drivers / gpu / drm / i915 / i915_drv.c

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index f07e425..e9c2cfe 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -35,6 +35,7 @@
 #include "intel_drv.h"
 
 #include <linux/console.h>
+#include <linux/module.h>
 #include "drm_crtc_helper.h"
 
 static int i915_modeset __read_mostly = -1;
@@ -79,11 +80,11 @@ MODULE_PARM_DESC(lvds_downclock,
                "Use panel (LVDS/eDP) downclocking for power savings "
                "(default: false)");
 
-unsigned int i915_panel_use_ssc __read_mostly = 1;
+unsigned int i915_panel_use_ssc __read_mostly = -1;
 module_param_named(lvds_use_ssc, i915_panel_use_ssc, int, 0600);
 MODULE_PARM_DESC(lvds_use_ssc,
                "Use Spread Spectrum Clock with panels [LVDS/eDP] "
-               "(default: true)");
+               "(default: auto from VBT)");
 
 int i915_vbt_sdvo_panel_type __read_mostly = -1;
 module_param_named(vbt_sdvo_panel_type, i915_vbt_sdvo_panel_type, int, 0600);
@@ -294,7 +295,7 @@ MODULE_DEVICE_TABLE(pci, pciidlist);
 #define INTEL_PCH_CPT_DEVICE_ID_TYPE   0x1c00
 #define INTEL_PCH_PPT_DEVICE_ID_TYPE   0x1e00
 
-void intel_detect_pch (struct drm_device *dev)
+void intel_detect_pch(struct drm_device *dev)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
        struct pci_dev *pch;
@@ -377,7 +378,7 @@ void gen6_gt_force_wake_put(struct drm_i915_private *dev_priv)
 
 void __gen6_gt_wait_for_fifo(struct drm_i915_private *dev_priv)
 {
-       if (dev_priv->gt_fifo_count < GT_FIFO_NUM_RESERVED_ENTRIES ) {
+       if (dev_priv->gt_fifo_count < GT_FIFO_NUM_RESERVED_ENTRIES) {
                int loop = 500;
                u32 fifo = I915_READ_NOTRACE(GT_FIFO_FREE_ENTRIES);
                while (fifo <= GT_FIFO_NUM_RESERVED_ENTRIES && loop--) {
@@ -471,6 +472,9 @@ static int i915_drm_thaw(struct drm_device *dev)
                error = i915_gem_init_ringbuffer(dev);
                mutex_unlock(&dev->struct_mutex);
 
+               if (HAS_PCH_SPLIT(dev))
+                       ironlake_init_pch_refclk(dev);
+
                drm_mode_config_reset(dev);
                drm_irq_install(dev);
 
@@ -770,12 +774,12 @@ static int i915_pm_poweroff(struct device *dev)
 }
 
 static const struct dev_pm_ops i915_pm_ops = {
-     .suspend = i915_pm_suspend,
-     .resume = i915_pm_resume,
-     .freeze = i915_pm_freeze,
-     .thaw = i915_pm_thaw,
-     .poweroff = i915_pm_poweroff,
-     .restore = i915_pm_resume,
+       .suspend = i915_pm_suspend,
+       .resume = i915_pm_resume,
+       .freeze = i915_pm_freeze,
+       .thaw = i915_pm_thaw,
+       .poweroff = i915_pm_poweroff,
+       .restore = i915_pm_resume,
 };
 
 static struct vm_operations_struct i915_gem_vm_ops = {
@@ -785,8 +789,8 @@ static struct vm_operations_struct i915_gem_vm_ops = {
 };
 
 static struct drm_driver driver = {
-       /* don't use mtrr's here, the Xserver or user space app should
-        * deal with them for intel hardware.
+       /* Don't use MTRRs here; the Xserver or userspace app should
+        * deal with them for Intel hardware.
         */
        .driver_features =
            DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | /* DRIVER_USE_MTRR |*/
@@ -895,3 +899,43 @@ module_exit(i915_exit);
 MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_LICENSE("GPL and additional rights");
+
+/* We give fast paths for the really cool registers */
+#define NEEDS_FORCE_WAKE(dev_priv, reg) \
+       (((dev_priv)->info->gen >= 6) && \
+       ((reg) < 0x40000) && \
+       ((reg) != FORCEWAKE))
+
+#define __i915_read(x, y) \
+u##x i915_read##x(struct drm_i915_private *dev_priv, u32 reg) { \
+       u##x val = 0; \
+       if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \
+               gen6_gt_force_wake_get(dev_priv); \
+               val = read##y(dev_priv->regs + reg); \
+               gen6_gt_force_wake_put(dev_priv); \
+       } else { \
+               val = read##y(dev_priv->regs + reg); \
+       } \
+       trace_i915_reg_rw(false, reg, val, sizeof(val)); \
+       return val; \
+}
+
+__i915_read(8, b)
+__i915_read(16, w)
+__i915_read(32, l)
+__i915_read(64, q)
+#undef __i915_read
+
+#define __i915_write(x, y) \
+void i915_write##x(struct drm_i915_private *dev_priv, u32 reg, u##x val) { \
+       trace_i915_reg_rw(true, reg, val, sizeof(val)); \
+       if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \
+               __gen6_gt_wait_for_fifo(dev_priv); \
+       } \
+       write##y(val, dev_priv->regs + reg); \
+}
+__i915_write(8, b)
+__i915_write(16, w)
+__i915_write(32, l)
+__i915_write(64, q)
+#undef __i915_write