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Merge tag 'drm-intel-fixes-2015-04-08' of git://anongit.freedesktop.org/drm-intel into drm-fixes 

three commits, all cc: stable, to address Baytrail
suspend/resume issues.

* tag 'drm-intel-fixes-2015-04-08' of git://anongit.freedesktop.org/drm-intel:
  drm/i915/vlv: remove wait for previous GFX clk disable request
  drm/i915/chv: Remove Wait for a previous gfx force-off
  drm/i915/vlv: save/restore the power context base reg
This commit is contained in:
Dave Airlie 2015-04-09 06:59:50 +10:00
parent 04bdf44178 5df0582bf0
commit f4274e23fb
2 changed files with 3 additions and 12 deletions
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14
drivers/gpu/drm/i915/i915_drv.c
View File

@ -1095,6 +1095,7 @@ static void vlv_save_gunit_s0ix_state(struct drm_i915_private *dev_priv)
/* Gunit-Display CZ domain, 0x182028-0x1821CF */
s->gu_ctl0 = I915_READ(VLV_GU_CTL0);
s->gu_ctl1 = I915_READ(VLV_GU_CTL1);
s->pcbr = I915_READ(VLV_PCBR);
s->clock_gate_dis2 = I915_READ(VLV_GUNIT_CLOCK_GATE2);
/*
@ -1189,6 +1190,7 @@ static void vlv_restore_gunit_s0ix_state(struct drm_i915_private *dev_priv)
/* Gunit-Display CZ domain, 0x182028-0x1821CF */
I915_WRITE(VLV_GU_CTL0, s->gu_ctl0);
I915_WRITE(VLV_GU_CTL1, s->gu_ctl1);
I915_WRITE(VLV_PCBR, s->pcbr);
I915_WRITE(VLV_GUNIT_CLOCK_GATE2, s->clock_gate_dis2);
}
@ -1197,19 +1199,7 @@ int vlv_force_gfx_clock(struct drm_i915_private *dev_priv, bool force_on)
u32 val;
int err;
val = I915_READ(VLV_GTLC_SURVIVABILITY_REG);
WARN_ON(!!(val & VLV_GFX_CLK_FORCE_ON_BIT) == force_on);
#define COND (I915_READ(VLV_GTLC_SURVIVABILITY_REG) & VLV_GFX_CLK_STATUS_BIT)
/* Wait for a previous force-off to settle */
if (force_on) {
err = wait_for(!COND, 20);
if (err) {
DRM_ERROR("timeout waiting for GFX clock force-off (%08x)\n",
I915_READ(VLV_GTLC_SURVIVABILITY_REG));
return err;
}
}
val = I915_READ(VLV_GTLC_SURVIVABILITY_REG);
val &= ~VLV_GFX_CLK_FORCE_ON_BIT;

1
drivers/gpu/drm/i915/i915_drv.h
View File

@ -1094,6 +1094,7 @@ struct vlv_s0ix_state {
/* Display 2 CZ domain */
u32 gu_ctl0;
u32 gu_ctl1;
u32 pcbr;
u32 clock_gate_dis2;
};