mbox series

[v2,0/2] LOBF enablement fix

Message ID 20241204100328.3738778-1-animesh.manna@intel.com (mailing list archive)
Headers show
Series LOBF enablement fix | expand

Message

Manna, Animesh Dec. 4, 2024, 10:03 a.m. UTC
Signed-off-by: Animesh Manna <animesh.manna@intel.com>

Animesh Manna (2):
  drm/i915/lobf: Add lobf enablement in post plane update
  drm/i915/lobf: Add debug print for LOBF

 drivers/gpu/drm/i915/display/intel_alpm.c    | 29 +++++++++++++++++++-
 drivers/gpu/drm/i915/display/intel_alpm.h    |  4 +++
 drivers/gpu/drm/i915/display/intel_display.c |  3 ++
 3 files changed, 35 insertions(+), 1 deletion(-)

Comments

Hogander, Jouni Dec. 9, 2024, 8:43 a.m. UTC | #1
Generic comments on these patches.

These are enabling LOBF if it's possible. Possible errors are not taken
into account. I think DP_ALPM_LOCK_TIMEOUT_ERROR should be taken into
account in LOBF as well: See
drivers/gpu/drm/i915/display/intel_psr.c:psr_alpm_check.

You might also want to add some debug interface to disable lobf. I can
imagine this being feature not working on all setups where possible on
first try. Debugging/bisecting would be much easier if you have such
interface.

BR,

Jouni Högander
 
On Wed, 2024-12-04 at 15:33 +0530, Animesh Manna wrote:
> Signed-off-by: Animesh Manna <animesh.manna@intel.com>
> 
> Animesh Manna (2):
>   drm/i915/lobf: Add lobf enablement in post plane update
>   drm/i915/lobf: Add debug print for LOBF
> 
>  drivers/gpu/drm/i915/display/intel_alpm.c    | 29
> +++++++++++++++++++-
>  drivers/gpu/drm/i915/display/intel_alpm.h    |  4 +++
>  drivers/gpu/drm/i915/display/intel_display.c |  3 ++
>  3 files changed, 35 insertions(+), 1 deletion(-)
>
Manna, Animesh Dec. 9, 2024, 11:40 a.m. UTC | #2
> -----Original Message-----
> From: Hogander, Jouni <jouni.hogander@intel.com>
> Sent: Monday, December 9, 2024 2:14 PM
> To: Manna, Animesh <animesh.manna@intel.com>; intel-
> gfx@lists.freedesktop.org
> Cc: Nikula, Jani <jani.nikula@intel.com>; B, Jeevan <jeevan.b@intel.com>
> Subject: Re: [PATCH v2 0/2] LOBF enablement fix
> 
> Generic comments on these patches.
> 
> These are enabling LOBF if it's possible. Possible errors are not taken into
> account. I think DP_ALPM_LOCK_TIMEOUT_ERROR should be taken into
> account in LOBF as well: See
> drivers/gpu/drm/i915/display/intel_psr.c:psr_alpm_check.

Sure, will add checks for LOBF as well.

> 
> You might also want to add some debug interface to disable lobf. I can
> imagine this being feature not working on all setups where possible on first
> try. Debugging/bisecting would be much easier if you have such interface.

Got it, will try to add.

Regards,
Animesh

> 
> BR,
> 
> Jouni Högander
> 
> On Wed, 2024-12-04 at 15:33 +0530, Animesh Manna wrote:
> > Signed-off-by: Animesh Manna <animesh.manna@intel.com>
> >
> > Animesh Manna (2):
> >   drm/i915/lobf: Add lobf enablement in post plane update
> >   drm/i915/lobf: Add debug print for LOBF
> >
> >  drivers/gpu/drm/i915/display/intel_alpm.c    | 29
> > +++++++++++++++++++-
> >  drivers/gpu/drm/i915/display/intel_alpm.h    |  4 +++
> >  drivers/gpu/drm/i915/display/intel_display.c |  3 ++
> >  3 files changed, 35 insertions(+), 1 deletion(-)
> >