From 357b13c3e498bb658f511f91a9e4f09c9553be6e Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Thu, 4 Feb 2010 14:17:47 -0800 Subject: [PATCH] drm/i915: fix drps disable so unload & re-load works At unload time, we need to disable DRPS, but we need to do it correctly or the GPU will hang and we won't be able to load the module again. So set the SFCAVM bit so we can properly restore the DRPS config at unload. Signed-off-by: Jesse Barnes Signed-off-by: Eric Anholt --- drivers/gpu/drm/i915/intel_display.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index cba51c2b512f..e879885f4754 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -4699,7 +4699,7 @@ void ironlake_disable_drps(struct drm_device *dev) fstart = (I915_READ(MEMMODECTL) & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT; rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) | - (fstart << MEMCTL_FREQ_SHIFT); + (fstart << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM; I915_WRITE(MEMSWCTL, rgvswctl); msleep(1); rgvswctl |= MEMCTL_CMD_STS; -- 2.20.1