On Tue, 03 Nov 2015, Patrik Jakobsson <patrik.jakobsson@xxxxxxxxxxxxxxx> wrote:
> On Tue, Nov 03, 2015 at 03:08:41PM +0200, Jani Nikula wrote:
>> On Tue, 03 Nov 2015, Patrik Jakobsson <patrik.jakobsson@xxxxxxxxxxxxxxx> wrote:
>> > Signed-off-by: Patrik Jakobsson <patrik.jakobsson@xxxxxxxxxxxxxxx>
>> > ---
>> > drivers/gpu/drm/i915/i915_drv.h | 1 +
>> > drivers/gpu/drm/i915/i915_params.c | 6 ++++++
>> > drivers/gpu/drm/i915/intel_runtime_pm.c | 2 +-
>> > 3 files changed, 8 insertions(+), 1 deletion(-)
>> >
>> > diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
>> > index efb6a00..9c8cb43 100644
>> > --- a/drivers/gpu/drm/i915/i915_drv.h
>> > +++ b/drivers/gpu/drm/i915/i915_drv.h
>> > @@ -2660,6 +2660,7 @@ struct i915_params {
>> > int panel_use_ssc;
>> > int vbt_sdvo_panel_type;
>> > int enable_rc6;
>> > + int enable_dc6;
>> > int enable_fbc;
>> > int enable_ppgtt;
>> > int enable_execlists;
>> > diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c
>> > index 368df67..1a7dedf 100644
>> > --- a/drivers/gpu/drm/i915/i915_params.c
>> > +++ b/drivers/gpu/drm/i915/i915_params.c
>> > @@ -32,6 +32,7 @@ struct i915_params i915 __read_mostly = {
>> > .panel_use_ssc = -1,
>> > .vbt_sdvo_panel_type = -1,
>> > .enable_rc6 = -1,
>> > + .enable_dc6 = 1,
>> > .enable_fbc = -1,
>> > .enable_execlists = -1,
>> > .enable_hangcheck = true,
>> > @@ -79,6 +80,11 @@ MODULE_PARM_DESC(enable_rc6,
>> > "For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. "
>> > "default: -1 (use per-chip default)");
>> >
>> > +module_param_named(enable_dc6, i915.enable_dc6, int, 0400);
>>
>> _unsafe please.
>
> Is the convention to taint for all non-default options in i915?
The intention is to taint all i915 options that people have no clue
about and blindly set just because they read on a forum they should do
it, and then report bugs because it fails.
BR,
Jani.
>
> -Patrik
>
>>
>> BR,
>> Jani.
>>
>> > +MODULE_PARM_DESC(enable_dc6,
>> > + "Enable power-saving display C-state 6. "
>> > + "(0 = disable; 1 = enable [default])");
>> > +
>> > module_param_named_unsafe(enable_fbc, i915.enable_fbc, int, 0600);
>> > MODULE_PARM_DESC(enable_fbc,
>> > "Enable frame buffer compression for power savings "
>> > diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
>> > index 042d92f..4843c5c 100644
>> > --- a/drivers/gpu/drm/i915/intel_runtime_pm.c
>> > +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
>> > @@ -753,7 +753,7 @@ static void skl_dc_off_power_well_enable(struct drm_i915_private *dev_priv,
>> > static void skl_dc_off_power_well_disable(struct drm_i915_private *dev_priv,
>> > struct i915_power_well *power_well)
>> > {
>> > - if (IS_SKYLAKE(dev_priv))
>> > + if (IS_SKYLAKE(dev_priv) && i915.enable_dc6)
>> > skl_enable_dc6(dev_priv);
>> > else
>> > gen9_enable_dc5(dev_priv);
>>
>> --
>> Jani Nikula, Intel Open Source Technology Center
--
Jani Nikula, Intel Open Source Technology Center
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