On Thu, 2018-11-29 at 15:25 -0800, Dhinakaran Pandiyan wrote:
> On Thu, 2018-11-29 at 15:07 -0800, Rodrigo Vivi wrote:
> > On Mon, Nov 26, 2018 at 04:37:08PM -0800, José Roberto de Souza
> > wrote:
> > > The first 8 bits of PSR2_CTL have 2 fields to set frames count,
> > > the
> > > first one is to set how many idle frames PSR2 HW needs to wait
> > > before
> > > enter in deep sleep and the second one it is how many frames(it
> > > don't
> > > need to be idle frames) PSR2 HW will wait before start the PSR
> > > activation sequence.
> > > The previous names was really misleading and caused wrong values
> The idea was to setup a conservative configuration for PSR2 until we
> were ready to enable the feature and some testing was done. Not sure
> why you think the values are wrong.
>
> > > being
> > > set so better rename to make it clear.
> >
> > I honestly prefer the old names for 2 reasons:
> >
> > - they are shorter
> > - they follow the exact name we have on spec
> +1 for the above reason.
Okay droping this patch.
>
> > > Also taking the oportunity to improve those macros.
> > >
> > > Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> > > Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
> > > Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
> > > ---
> > > drivers/gpu/drm/i915/i915_reg.h | 35 ++++++++++++++++----------
> > > ------
> > > drivers/gpu/drm/i915/intel_psr.c | 7 ++++---
> > > 2 files changed, 22 insertions(+), 20 deletions(-)
> > >
> > > diff --git a/drivers/gpu/drm/i915/i915_reg.h
> > > b/drivers/gpu/drm/i915/i915_reg.h
> > > index 47baf2fe8f71..73046bb9ec7c 100644
> > > --- a/drivers/gpu/drm/i915/i915_reg.h
> > > +++ b/drivers/gpu/drm/i915/i915_reg.h
> > > @@ -4203,23 +4203,24 @@ enum {
> > > #define EDP_PSR_DEBUG_MASK_DISP_REG_WRITE (1 << 16) /*
> > > Reserved in ICL+ */
> > > #define EDP_PSR_DEBUG_EXIT_ON_PIXEL_UNDERRUN (1 << 15) /* SKL+
> > > */
> > >
> > > -#define EDP_PSR2_CTL _MMIO(0x6f900)
> > > -#define EDP_PSR2_ENABLE (1 << 31)
> > > -#define EDP_SU_TRACK_ENABLE (1 << 30)
> > > -#define EDP_Y_COORDINATE_VALID (1 << 26) /* GLK and CNL+ */
> > > -#define EDP_Y_COORDINATE_ENABLE (1 << 25) /* GLK and
> > > CNL+ */
> > > -#define EDP_MAX_SU_DISABLE_TIME(t) ((t) << 20)
> > > -#define EDP_MAX_SU_DISABLE_TIME_MASK (0x1f << 20)
> > > -#define EDP_PSR2_TP2_TIME_500us (0 << 8)
> > > -#define EDP_PSR2_TP2_TIME_100us (1 << 8)
> > > -#define EDP_PSR2_TP2_TIME_2500us (2 << 8)
> > > -#define EDP_PSR2_TP2_TIME_50us (3 << 8)
> > > -#define EDP_PSR2_TP2_TIME_MASK (3 << 8)
> > > -#define EDP_PSR2_FRAME_BEFORE_SU_SHIFT 4
> > > -#define EDP_PSR2_FRAME_BEFORE_SU_MASK (0xf << 4)
> > > -#define EDP_PSR2_FRAME_BEFORE_SU(a) ((a) << 4)
> > > -#define EDP_PSR2_IDLE_FRAME_MASK 0xf
> > > -#define EDP_PSR2_IDLE_FRAME_SHIFT 0
> > > +#define EDP_PSR2_CTL _MMIO(0
> > > x6f900)
> > > +#define EDP_PSR2_ENABLE (1 <<
> > > 31)
> > > +#define EDP_SU_TRACK_ENABLE (1 <<
> > > 30)
> > > +#define EDP_Y_COORDINATE_VALID (1 << 26) /*
> > > GLK and CNL+ */
> > > +#define EDP_Y_COORDINATE_ENABLE (1 <<
> > > 25) /*
> > > GLK and CNL+ */
> > > +#define EDP_MAX_SU_DISABLE_TIME(t) ((t) <<
> > > 20)
> > > +#define EDP_MAX_SU_DISABLE_TIME_MASK (0x1f
> > > << 20)
> > > +#define EDP_PSR2_TP2_TIME_500us (0 <<
> > > 8)
> > > +#define EDP_PSR2_TP2_TIME_100us (1 <<
> > > 8)
> > > +#define EDP_PSR2_TP2_TIME_2500us (2 <<
> > > 8)
> > > +#define EDP_PSR2_TP2_TIME_50us (3 << 8)
> > > +#define EDP_PSR2_TP2_TIME_MASK (3 << 8)
> > > +#define EDP_PSR2_FRAMES_BEFORE_ACTIVATE_SHIFT (4)
> > > +#define EDP_PSR2_FRAMES_BEFORE_ACTIVATE_MASK (0xf <<
> > > EDP_PSR2_FRAMES_BEFORE_ACTIVATE_SHIFT)
> > > +#define EDP_PSR2_FRAMES_BEFORE_ACTIVATE(n) (((n)
> > > << EDP_PSR2_FRAMES_BEFORE_ACTIVATE_SHIFT) &
> > > EDP_PSR2_FRAMES_BEFORE_ACTIVATE_MASK)
> > > +#define EDP_PSR2_IDLE_FRAMES_TO_DEEP_SLEEP_MASK (0xf)
> > > +#define EDP_PSR2_IDLE_FRAMES_TO_DEEP_SLEEP_SHIFT (0)
> > > +#define EDP_PSR2_IDLE_FRAMES_TO_DEEP_SLEEP(n) (((n)
> > > << EDP_PSR2_IDLE_FRAMES_TO_DEEP_SLEEP_SHIFT) &
> > > EDP_PSR2_IDLE_FRAMES_TO_DEEP_SLEEP_MASK)
> > >
> > > #define _PSR_EVENT_TRANS_A 0x60848
> > > #define _PSR_EVENT_TRANS_B 0x61848
> > > diff --git a/drivers/gpu/drm/i915/intel_psr.c
> > > b/drivers/gpu/drm/i915/intel_psr.c
> > > index 9215c9052381..ba7bbe3f8df2 100644
> > > --- a/drivers/gpu/drm/i915/intel_psr.c
> > > +++ b/drivers/gpu/drm/i915/intel_psr.c
> > > @@ -479,6 +479,7 @@ static void hsw_activate_psr1(struct intel_dp
> > > *intel_dp)
> > > static void hsw_activate_psr2(struct intel_dp *intel_dp)
> > > {
> > > struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
> > > + struct i915_psr *psr = &dev_priv->psr;
> > > u32 val;
> > >
> > > /* Let's use 6 as the minimum to cover all known cases
> > > including the
> > > @@ -486,8 +487,8 @@ static void hsw_activate_psr2(struct intel_dp
> > > *intel_dp)
> > > */
> > > int idle_frames = max(6, dev_priv->vbt.psr.idle_frames);
> > >
> > > - idle_frames = max(idle_frames, dev_priv->psr.sink_sync_latency
> > > + 1);
> > > - val = idle_frames << EDP_PSR2_IDLE_FRAME_SHIFT;
> > > + idle_frames = max(idle_frames, psr->sink_sync_latency + 1);
> > > + val = EDP_PSR2_IDLE_FRAMES_TO_DEEP_SLEEP(idle_frames);
> > >
> > > /* FIXME: selective update is probably totally broken because
> > > it doesn't
> > > * mesh at all with our frontbuffer tracking. And the hw alone
> > > isn't
> > > @@ -496,7 +497,7 @@ static void hsw_activate_psr2(struct intel_dp
> > > *intel_dp)
> > > if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv))
> > > val |= EDP_Y_COORDINATE_ENABLE;
> > >
> > > - val |= EDP_PSR2_FRAME_BEFORE_SU(dev_priv-
> > > >psr.sink_sync_latency
> > > + 1);
> > > + val |= EDP_PSR2_FRAMES_BEFORE_ACTIVATE(psr->sink_sync_latency +
> > > 1);
> > >
> > > if (dev_priv->vbt.psr.tp2_tp3_wakeup_time_us >= 0 &&
> > > dev_priv->vbt.psr.tp2_tp3_wakeup_time_us <= 50)
> > > --
> > > 2.19.2
> > >
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