[Intel-gfx] [PATCH v4 3/5] drm/i915/guc: Drop legacy workarounds from guc_prepare_xfer

[Sagar Arun Kamble]

On 11/3/2017 8:48 PM, Michal Wajdeczko wrote:
> We don't keep the workarounds for pre-production hardware
> (see intel_detect_preproduction_hw) thus we can drop some
> extra steps during firmware upload needed only for unsupported
> platforms.
>
> Suggested-by: Chris Wilson <chris at chris-wilson.co.uk>
> Signed-off-by: Michal Wajdeczko <michal.wajdeczko at intel.com>
> Cc: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
> Cc: Sagar Arun Kamble <sagar.a.kamble at intel.com>
Reviewed-by: Sagar Arun Kamble <sagar.a.kamble at intel.com>
> ---
>   drivers/gpu/drm/i915/intel_guc_fw.c | 10 ----------
>   1 file changed, 10 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_guc_fw.c b/drivers/gpu/drm/i915/intel_guc_fw.c
> index 74a61fe..a63b5cf 100644
> --- a/drivers/gpu/drm/i915/intel_guc_fw.c
> +++ b/drivers/gpu/drm/i915/intel_guc_fw.c
> @@ -104,16 +104,6 @@ static void guc_prepare_xfer(struct intel_guc *guc)
>   	/* Enable MIA caching. GuC clock gating is disabled. */
>   	I915_WRITE(GUC_SHIM_CONTROL, GUC_SHIM_CONTROL_VALUE);
>   
> -	/* WaDisableMinuteIaClockGating:bxt */
> -	if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1)) {
> -		I915_WRITE(GUC_SHIM_CONTROL, (I915_READ(GUC_SHIM_CONTROL) &
> -					      ~GUC_ENABLE_MIA_CLOCK_GATING));
> -	}
> -
> -	/* WaC6DisallowByGfxPause:bxt */
> -	if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_B0))
> -		I915_WRITE(GEN6_GFXPAUSE, 0x30FFF);
> -
>   	if (IS_GEN9_LP(dev_priv))
>   		I915_WRITE(GEN9LP_GT_PM_CONFIG, GT_DOORBELL_ENABLE);
>   	else