Re: [PATCH 07/19] drm/i915/display: Add helper to check DC3CO support

Dibin Moolakadan Subrahmanian
2026-04-20T12:21:30Z

On 14-04-2026 02:48, Shankar, Uma wrote:
>
>> -----Original Message-----
>> From: Dibin Moolakadan Subrahmanian
>> <dibin.moolakadan.subrahmanian@intel.com>
>> Sent: Thursday, March 26, 2026 10:46 PM
>> To: intel-gfx@lists.freedesktop.org; intel-xe@lists.freedesktop.org
>> Cc: Manna, Animesh <animesh.manna@intel.com>; Shankar, Uma
>> <uma.shankar@intel.com>; Kurmi, Suresh Kumar
>> <suresh.kumar.kurmi@intel.com>
>> Subject: [PATCH 07/19] drm/i915/display: Add helper to check DC3CO support
>>
>> Add a helper to query DC3CO support from allowed_dc_mask.
> Change looks good but I feel this can be squashed with some earlier patches.

I will  squash this into patch 05.

>> Signed-off-by: Dibin Moolakadan Subrahmanian
>> <dibin.moolakadan.subrahmanian@intel.com>
>> ---
>> drivers/gpu/drm/i915/display/intel_display_power.c | 7 +++++++
>> drivers/gpu/drm/i915/display/intel_display_power.h | 1 +
>> 2 files changed, 8 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c
>> b/drivers/gpu/drm/i915/display/intel_display_power.c
>> index 12967db27c8d..a3b0c8ad8bb5 100644
>> --- a/drivers/gpu/drm/i915/display/intel_display_power.c
>> +++ b/drivers/gpu/drm/i915/display/intel_display_power.c
>> @@ -365,6 +365,13 @@ u32 intel_display_power_get_current_dc_state(struct
>> intel_display *display)
>> return current_dc_state;
>> }
>>
>> +bool intel_display_power_dc3co_supported(struct intel_display *display)
>> +{
>> + struct i915_power_domains *power_domains = &display->power.domains;
>> +
>> + return (power_domains->allowed_dc_mask &
>> DC_STATE_EN_UPTO_DC3CO) ==
>> +DC_STATE_EN_UPTO_DC3CO; }
>> +
>> static void __async_put_domains_mask(struct i915_power_domains
>> *power_domains,
>> struct intel_power_domain_mask *mask) { diff
>> --git a/drivers/gpu/drm/i915/display/intel_display_power.h
>> b/drivers/gpu/drm/i915/display/intel_display_power.h
>> index 3fb45154864e..f57ce99a6039 100644
>> --- a/drivers/gpu/drm/i915/display/intel_display_power.h
>> +++ b/drivers/gpu/drm/i915/display/intel_display_power.h
>> @@ -201,6 +201,7 @@ void intel_display_power_resume(struct intel_display
>> *display); void intel_display_power_set_target_dc_state(struct intel_display
>> *display,
>> u32 state);
>> u32 intel_display_power_get_current_dc_state(struct intel_display *display);
>> +bool intel_display_power_dc3co_supported(struct intel_display
>> +*display);
>>
>> bool intel_display_power_is_enabled(struct intel_display *display,
>> enum intel_display_power_domain domain);
>> --
>> 2.43.0