Re: [PATCH v2 06/10] drm/i915/xe3lpd: Include hblank restriction for xe3lpd

[Jani Nikula <jani.nikula@linux.intel.com>]

On Thu, 10 Oct 2024, Matt Atwood <matthew.s.atwood@intel.com> wrote:
> From: Suraj Kandpal <suraj.kandpal@intel.com>
>
> hblank restriction now includes all of xe3.
>
> v2: add additional definition instead of function, commit message typo
> fix and update.
>
> Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
> Signed-off-by: Matt Atwood <matthew.s.atwood@intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_hdcp.c | 5 +++--
>  drivers/gpu/drm/i915/i915_reg.h           | 1 +
>  2 files changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
> index ed6aa87403e2..46d5019499a8 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdcp.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
> @@ -47,10 +47,11 @@ intel_hdcp_disable_hdcp_line_rekeying(struct intel_encoder *encoder,
>  			intel_de_rmw(display, MTL_CHICKEN_TRANS(hdcp->cpu_transcoder),
>  				     0, HDCP_LINE_REKEY_DISABLE);
>  		else if (IS_DISPLAY_VER_STEP(display, IP_VER(14, 1), STEP_B0, STEP_FOREVER) ||
> -			 IS_DISPLAY_VER_STEP(display, IP_VER(20, 0), STEP_B0, STEP_FOREVER))
> +			 IS_DISPLAY_VER_STEP(display, IP_VER(20, 0), STEP_B0, STEP_FOREVER) ||
> +			 DISPLAY_VER(display) >= 30)
>  			intel_de_rmw(display,
>  				     TRANS_DDI_FUNC_CTL(display, hdcp->cpu_transcoder),
> -				     0, TRANS_DDI_HDCP_LINE_REKEY_DISABLE);
> +				     0, XE3_TRANS_DDI_HDCP_LINE_REKEY_DISABLE);

This now uses bit 15 also for display version < 30.

>  	}
>  }
>  
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index d30459f8d1cb..fc30e0056b07 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -3833,6 +3833,7 @@ enum skl_power_gate {
>  #define  TRANS_DDI_EDP_INPUT_C_ONOFF	(6 << 12)
>  #define  TRANS_DDI_EDP_INPUT_D_ONOFF	(7 << 12)
>  #define  TRANS_DDI_HDCP_LINE_REKEY_DISABLE	REG_BIT(12)
> +#define  XE3_TRANS_DDI_HDCP_LINE_REKEY_DISABLE	REG_BIT(15)
>  #define  TRANS_DDI_MST_TRANSPORT_SELECT_MASK	REG_GENMASK(11, 10)
>  #define  TRANS_DDI_MST_TRANSPORT_SELECT(trans)	\
>  	REG_FIELD_PREP(TRANS_DDI_MST_TRANSPORT_SELECT_MASK, trans)

-- 
Jani Nikula, Intel