From b52eb4dcab23fe0c52a437276258e0afcf913ef5 Mon Sep 17 00:00:00 2001 From: Zhao Yakui Date: Sat, 12 Jun 2010 14:32:27 +0800 Subject: drm/i915: Add frame buffer compression support on Ironlake mobile About 0.2W power can be saved on one HP laptop. Signed-off-by: Zhao Yakui Signed-off-by: Zhenyu Wang Signed-off-by: Eric Anholt --- drivers/gpu/drm/i915/i915_reg.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'drivers/gpu/drm/i915/i915_reg.h') diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index d0ccfa0c72de..e2a6f687d8b0 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -530,6 +530,21 @@ #define DPFC_CHICKEN 0x3224 #define DPFC_HT_MODIFY (1<<31) +/* Framebuffer compression for Ironlake */ +#define ILK_DPFC_CB_BASE 0x43200 +#define ILK_DPFC_CONTROL 0x43208 +/* The bit 28-8 is reserved */ +#define DPFC_RESERVED (0x1FFFFF00) +#define ILK_DPFC_RECOMP_CTL 0x4320c +#define ILK_DPFC_STATUS 0x43210 +#define ILK_DPFC_FENCE_YOFF 0x43218 +#define ILK_DPFC_CHICKEN 0x43224 +#define ILK_FBC_RT_BASE 0x2128 +#define ILK_FBC_RT_VALID (1<<0) + +#define ILK_DISPLAY_CHICKEN1 0x42000 +#define ILK_FBCQ_DIS (1<<22) + /* * GPIO regs */ @@ -2491,6 +2506,10 @@ #define ILK_VSDPFD_FULL (1<<21) #define ILK_DSPCLK_GATE 0x42020 #define ILK_DPARB_CLK_GATE (1<<5) +/* According to spec this bit 7/8/9 of 0x42020 should be set to enable FBC */ +#define ILK_CLK_FBC (1<<7) +#define ILK_DPFC_DIS1 (1<<8) +#define ILK_DPFC_DIS2 (1<<9) #define DISP_ARB_CTL 0x45000 #define DISP_TILE_SURFACE_SWIZZLING (1<<13) -- cgit v1.2.3