| Message ID | 20220224202523.993560-1-jose.souza@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2] drm/i915/display: Allow users to disable PSR2 | expand |
Psr_debug has already similar functionality you are introducing here. Values we used there are different. Maybe we should consider dropping that setting? Still for this patch: Reviewed-by: Jouni Högander <jouni.hogander@intel.com> On Thu, 2022-02-24 at 12:25 -0800, José Roberto de Souza wrote: > Some users are suffering with PSR2 issues that are under debug or > issues that were root caused to panel firmware bugs, to make life of > those users easier here adding a option to disable PSR2 with kernel > parameters so they can still benefit from PSR1 power savings. > > Using the same enable_psr that is current used to turn the whole > feature on or off and allowing user to select up to what PSR version > it should enable. > Right now users only set this parameter to 0 when they want to > disable > PSR1 and PSR2 or don't add it at all leaving it to per-chip behavior > so it should not cause a bad impact on users. > > v2: > - changing enable_psr values (Ville and Rodrigo) > > Link: https://gitlab.freedesktop.org/drm/intel/-/issues/4951 > Cc: Jouni Högander <jouni.hogander@intel.com> > Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> > Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> > Signed-off-by: José Roberto de Souza <jose.souza@intel.com> > --- > drivers/gpu/drm/i915/display/intel_psr.c | 4 ++++ > drivers/gpu/drm/i915/i915_params.c | 2 +- > 2 files changed, 5 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_psr.c > b/drivers/gpu/drm/i915/display/intel_psr.c > index 2e0b092f4b6be..9817ebd4c839e 100644 > --- a/drivers/gpu/drm/i915/display/intel_psr.c > +++ b/drivers/gpu/drm/i915/display/intel_psr.c > @@ -100,11 +100,15 @@ static bool psr_global_enabled(struct intel_dp > *intel_dp) > > static bool psr2_global_enabled(struct intel_dp *intel_dp) > { > + struct drm_i915_private *i915 = dp_to_i915(intel_dp); > + > switch (intel_dp->psr.debug & I915_PSR_DEBUG_MODE_MASK) { > case I915_PSR_DEBUG_DISABLE: > case I915_PSR_DEBUG_FORCE_PSR1: > return false; > default: > + if (i915->params.enable_psr == 1) > + return false; > return true; > } > } > diff --git a/drivers/gpu/drm/i915/i915_params.c > b/drivers/gpu/drm/i915/i915_params.c > index eea355c2fc28a..207b54a4e6ce7 100644 > --- a/drivers/gpu/drm/i915/i915_params.c > +++ b/drivers/gpu/drm/i915/i915_params.c > @@ -94,7 +94,7 @@ i915_param_named_unsafe(enable_hangcheck, bool, > 0400, > > i915_param_named_unsafe(enable_psr, int, 0400, > "Enable PSR " > - "(0=disabled, 1=enabled) " > + "(0=disabled, 1=enable up to PSR1, 2=enable up to PSR2) " > "Default: -1 (use per-chip default)"); > > i915_param_named(psr_safest_params, bool, 0400,
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c index 2e0b092f4b6be..9817ebd4c839e 100644 --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -100,11 +100,15 @@ static bool psr_global_enabled(struct intel_dp *intel_dp) static bool psr2_global_enabled(struct intel_dp *intel_dp) { + struct drm_i915_private *i915 = dp_to_i915(intel_dp); + switch (intel_dp->psr.debug & I915_PSR_DEBUG_MODE_MASK) { case I915_PSR_DEBUG_DISABLE: case I915_PSR_DEBUG_FORCE_PSR1: return false; default: + if (i915->params.enable_psr == 1) + return false; return true; } } diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c index eea355c2fc28a..207b54a4e6ce7 100644 --- a/drivers/gpu/drm/i915/i915_params.c +++ b/drivers/gpu/drm/i915/i915_params.c @@ -94,7 +94,7 @@ i915_param_named_unsafe(enable_hangcheck, bool, 0400, i915_param_named_unsafe(enable_psr, int, 0400, "Enable PSR " - "(0=disabled, 1=enabled) " + "(0=disabled, 1=enable up to PSR1, 2=enable up to PSR2) " "Default: -1 (use per-chip default)"); i915_param_named(psr_safest_params, bool, 0400,
Some users are suffering with PSR2 issues that are under debug or issues that were root caused to panel firmware bugs, to make life of those users easier here adding a option to disable PSR2 with kernel parameters so they can still benefit from PSR1 power savings. Using the same enable_psr that is current used to turn the whole feature on or off and allowing user to select up to what PSR version it should enable. Right now users only set this parameter to 0 when they want to disable PSR1 and PSR2 or don't add it at all leaving it to per-chip behavior so it should not cause a bad impact on users. v2: - changing enable_psr values (Ville and Rodrigo) Link: https://gitlab.freedesktop.org/drm/intel/-/issues/4951 Cc: Jouni Högander <jouni.hogander@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: José Roberto de Souza <jose.souza@intel.com> --- drivers/gpu/drm/i915/display/intel_psr.c | 4 ++++ drivers/gpu/drm/i915/i915_params.c | 2 +- 2 files changed, 5 insertions(+), 1 deletion(-)