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drm/i915: enable thermal reporting for IPS

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Thermal reporting may not be enabled by default on some machines, so
enable the appropriate bits to allow IPS to get the data it needs from
the CPU thermal device.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Jesse Barnes 2010-09-10 10:02:13 -07:00 committed by Chris Wilson
parent 8b3016c4f4
commit ea056c14a2
2 changed files with 8 additions and 0 deletions
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4
drivers/gpu/drm/i915/i915_reg.h
View file

@ -928,6 +928,8 @@
#define CLKCFG_MEM_800 (3 << 4)
#define CLKCFG_MEM_MASK (7 << 4)
#define TSC1 0x11001
#define TSE (1<<0)
#define TR1 0x11006
#define TSFS 0x11020
#define TSFS_SLOPE_MASK 0x0000ff00
@ -1072,6 +1074,8 @@
#define MEMSTAT_SRC_CTL_STDBY 3
#define RCPREVBSYTUPAVG 0x113b8
#define RCPREVBSYTDNAVG 0x113bc
#define PMMISC 0x11214
#define MCPPCE_EN (1<<0) /* enable PM_MSG from PCH->MPC */
#define SDEW 0x1124c
#define CSIEW0 0x11250
#define CSIEW1 0x11254

4
drivers/gpu/drm/i915/intel_display.c
View file

@ -5635,6 +5635,10 @@ void ironlake_enable_drps(struct drm_device *dev)
u32 rgvmodectl = I915_READ(MEMMODECTL);
u8 fmax, fmin, fstart, vstart;
/* Enable temp reporting */
I915_WRITE16(PMMISC, I915_READ(PMMISC) | MCPPCE_EN);
I915_WRITE16(TSC1, I915_READ(TSC1) | TSE);
/* 100ms RC evaluation intervals */
I915_WRITE(RCUPEI, 100000);
I915_WRITE(RCDNEI, 100000);