diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 68 |
1 files changed, 56 insertions, 12 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index f07e4252b70..e9c2cfe45da 100644 --- 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 |