On Wed, Mar 06, 2019 at 06:20:08PM -0800, Dhinakaran Pandiyan wrote:
> On Wed, 2019-03-06 at 10:07 -0800, Rodrigo Vivi wrote:
> > On Tue, Mar 05, 2019 at 01:46:56PM -0800, Anusha wrote:
> > > From: Anusha Srivatsa <anusha.srivatsa@xxxxxxxxx>
> > >
> > > Comet Lake PCH is based off of Cannon Point(CNP).
> > > Add PCI ID for Comet Lake PCH.
> > >
> > > v2: Code cleanup (DK)
> > >
> > > Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
> > > Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> > > Signed-off-by: Anusha Srivatsa <anusha.srivatsa@xxxxxxxxx>
> > > ---
> > > drivers/gpu/drm/i915/i915_drv.c | 4 ++++
> > > drivers/gpu/drm/i915/i915_drv.h | 3 ++-
> > > 2 files changed, 6 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/drivers/gpu/drm/i915/i915_drv.c
> > > b/drivers/gpu/drm/i915/i915_drv.c
> > > index 1b2f5a6f8c25..e787c999b2c6 100644
> > > --- a/drivers/gpu/drm/i915/i915_drv.c
> > > +++ b/drivers/gpu/drm/i915/i915_drv.c
> > > @@ -188,6 +188,10 @@ intel_pch_type(const struct drm_i915_private
> > > *dev_priv, unsigned short id)
> > > DRM_DEBUG_KMS("Found Cannon Lake LP PCH (CNP-LP)\n");
> > > WARN_ON(!IS_CANNONLAKE(dev_priv) &&
> > > !IS_COFFEELAKE(dev_priv));
> > > return PCH_CNP;
> > > + case INTEL_PCH_CMP_DEVICE_ID_TYPE:
> > > + DRM_DEBUG_KMS("Found Comet Lake LP PCH (CMP)\n");
> > > + WARN_ON(!IS_CANNONLAKE(dev_priv) &&
> > > !IS_COFFEELAKE(dev_priv));
> >
> > Please remove CNL from this list...
> >
> > also please add a comment here before the return
> >
> > /* CM has same south display engine from CNP */
> >
> > > + return PCH_CNP;
> > > case INTEL_PCH_ICP_DEVICE_ID_TYPE:
> > > DRM_DEBUG_KMS("Found Ice Lake PCH\n");
> > > WARN_ON(!IS_ICELAKE(dev_priv));
> > > diff --git a/drivers/gpu/drm/i915/i915_drv.h
> > > b/drivers/gpu/drm/i915/i915_drv.h
> > > index 453af7438e67..55298e19e740 100644
> > > --- a/drivers/gpu/drm/i915/i915_drv.h
> > > +++ b/drivers/gpu/drm/i915/i915_drv.h
> > > @@ -530,7 +530,7 @@ enum intel_pch {
> > > PCH_LPT, /* Lynxpoint/Wildcatpoint PCH */
> > > PCH_SPT, /* Sunrisepoint PCH */
> > > PCH_KBP, /* Kaby Lake PCH */
> > > - PCH_CNP, /* Cannon Lake PCH */
> > > + PCH_CNP, /* Cannon/Comet Lake PCH */
> > > PCH_ICP, /* Ice Lake PCH */
> > > PCH_NOP, /* PCH without south display */
> > > };
> > > @@ -2552,6 +2552,7 @@ static inline unsigned int
> > > i915_sg_segment_size(void)
> > > #define INTEL_PCH_KBP_DEVICE_ID_TYPE 0xA280
> > > #define INTEL_PCH_CNP_DEVICE_ID_TYPE 0xA300
> > > #define INTEL_PCH_CNP_LP_DEVICE_ID_TYPE 0x9D80
> > > +#define INTEL_PCH_CMP_DEVICE_ID_TYPE 0x0280
> The debug message calls the device "LP" but the device id macro
> doesn't. This is not the case with CNP as both are consistent. So, the
> question is this an LP PCH?
Better to remove the LP from the comment.
>
> > > #define INTEL_PCH_ICP_DEVICE_ID_TYPE 0x3480
> > > #define INTEL_PCH_P2X_DEVICE_ID_TYPE 0x7100
> > > #define INTEL_PCH_P3X_DEVICE_ID_TYPE 0x7000
> > > --
> > > 2.21.0
> > >
>
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