diff options
| author | Zhenyu Wang <zhenyuw@linux.intel.com> | 2010-04-01 07:07:53 +0200 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2010-04-12 18:30:43 +0200 |
| commit | 7f8a85698f5c8a981641ec0bdf9926768786db9d (patch) | |
| tree | 3ae3183d2ac3f9816d501afd80e06fbd34d2c683 /drivers/gpu/drm/i915/i915_reg.h | |
| parent | drm/i915: Move Pineview CxSR and watermark code into update_wm hook. (diff) | |
| download | linux-7f8a85698f5c8a981641ec0bdf9926768786db9d.tar.xz linux-7f8a85698f5c8a981641ec0bdf9926768786db9d.zip | |
drm/i915: Add the support of memory self-refresh on Ironlake
Update the self-refresh watermark for display plane/cursor and enable
the memory self-refresh on Ironlake. The watermark is also updated for
the active display plane.
More than 1W idle power is saved on one Ironlake laptop after enabling
memory self-refresh.
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 6d8bf6220e19..527d30aecda2 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -2030,6 +2030,43 @@ #define PINEVIEW_CURSOR_DFT_WM 0 #define PINEVIEW_CURSOR_GUARD_WM 5 + +/* define the Watermark register on Ironlake */ +#define WM0_PIPEA_ILK 0x45100 +#define WM0_PIPE_PLANE_MASK (0x7f<<16) +#define WM0_PIPE_PLANE_SHIFT 16 +#define WM0_PIPE_SPRITE_MASK (0x3f<<8) +#define WM0_PIPE_SPRITE_SHIFT 8 +#define WM0_PIPE_CURSOR_MASK (0x1f) + +#define WM0_PIPEB_ILK 0x45104 +#define WM1_LP_ILK 0x45108 +#define WM1_LP_SR_EN (1<<31) +#define WM1_LP_LATENCY_SHIFT 24 +#define WM1_LP_LATENCY_MASK (0x7f<<24) +#define WM1_LP_SR_MASK (0x1ff<<8) +#define WM1_LP_SR_SHIFT 8 +#define WM1_LP_CURSOR_MASK (0x3f) + +/* Memory latency timer register */ +#define MLTR_ILK 0x11222 +/* the unit of memory self-refresh latency time is 0.5us */ +#define ILK_SRLT_MASK 0x3f + +/* define the fifo size on Ironlake */ +#define ILK_DISPLAY_FIFO 128 +#define ILK_DISPLAY_MAXWM 64 +#define ILK_DISPLAY_DFTWM 8 + +#define ILK_DISPLAY_SR_FIFO 512 +#define ILK_DISPLAY_MAX_SRWM 0x1ff +#define ILK_DISPLAY_DFT_SRWM 0x3f +#define ILK_CURSOR_SR_FIFO 64 +#define ILK_CURSOR_MAX_SRWM 0x3f +#define ILK_CURSOR_DFT_SRWM 8 + +#define ILK_FIFO_LINE_SIZE 64 + /* * The two pipe frame counter registers are not synchronized, so * reading a stable value is somewhat tricky. The following code @@ -2310,8 +2347,15 @@ #define GTIIR 0x44018 #define GTIER 0x4401c +#define ILK_DISPLAY_CHICKEN2 0x42004 +#define ILK_DPARB_GATE (1<<22) +#define ILK_VSDPFD_FULL (1<<21) +#define ILK_DSPCLK_GATE 0x42020 +#define ILK_DPARB_CLK_GATE (1<<5) + #define DISP_ARB_CTL 0x45000 #define DISP_TILE_SURFACE_SWIZZLING (1<<13) +#define DISP_FBC_WM_DIS (1<<15) /* PCH */ |