[PATCH v3] drm/i915/display: Fuse bit for power management disable removed

[Hogander, Jouni]

On Wed, 2024-10-30 at 12:55 -0700, Clint Taylor wrote:
> Starting with display version 13 the fuse bit to disable Display PM
> has
> been removed.
> 
> v2: Bit removed starting with display version 13 (MattR)
> v3: DG2 still uses this fuse bit (MattR)
> 
> BSPEC: 50075, 69464
> Cc: Matt Roper <matthew.d.roper at intel.com>
> Signed-off-by: Clint Taylor <clinton.a.taylor at intel.com>
> Signed-off-by: Matt Atwood <matthew.s.atwood at intel.com>

Reviewed-by: Jouni Högander <jouni.hogander at intel.com>

> ---
>  drivers/gpu/drm/i915/display/intel_display_device.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display_device.c
> b/drivers/gpu/drm/i915/display/intel_display_device.c
> index a2ae07f6d1b7..7465e1715cc8 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_device.c
> +++ b/drivers/gpu/drm/i915/display/intel_display_device.c
> @@ -1775,8 +1775,10 @@ static void
> __intel_display_device_info_runtime_init(struct drm_i915_private *i9
>                 if (dfsm & SKL_DFSM_DISPLAY_HDCP_DISABLE)
>                         display_runtime->has_hdcp = 0;
>  
> -               if (dfsm & SKL_DFSM_DISPLAY_PM_DISABLE)
> -                       display_runtime->fbc_mask = 0;
> +               if (IS_DG2(i915) || DISPLAY_VER(i915) < 13) {
> +                       if (dfsm & SKL_DFSM_DISPLAY_PM_DISABLE)
> +                               display_runtime->fbc_mask = 0;
> +               }
>  
>                 if (DISPLAY_VER(i915) >= 11 && (dfsm &
> ICL_DFSM_DMC_DISABLE))
>                         display_runtime->has_dmc = 0;