Re: [PATCH 2/2] drm/i915/icl: Set TBT IO in Aux transaction

From: Paulo Zanoni <paulo.r.zanoni@intel.com>
To: Anusha Srivatsa <anusha.srivatsa@intel.com>,
	intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH 2/2] drm/i915/icl: Set TBT IO in Aux transaction
Date: Fri, 27 Jul 2018 13:57:10 -0700	[thread overview]
Message-ID: <1532725030.5496.1.camel@intel.com> (raw)
In-Reply-To: <1532648115-29795-2-git-send-email-anusha.srivatsa@intel.com>

Em Qui, 2018-07-26 às 16:35 -0700, Anusha Srivatsa escreveu:
> For a TBT sequence, we need to set the IO type to TBT
> in  DDI_AUX_CTL.
> 
> v2: Avoid duplications.(Paulo)
> 
> Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
> Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com>

Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>

> ---
>  drivers/gpu/drm/i915/i915_reg.h |  1 +
>  drivers/gpu/drm/i915/intel_dp.c | 26 +++++++++++++++++---------
>  2 files changed, 18 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_reg.h
> b/drivers/gpu/drm/i915/i915_reg.h
> index 5530c47..7bdc214 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -5558,6 +5558,7 @@ enum {
>  #define   DP_AUX_CH_CTL_PSR_DATA_AUX_REG_SKL	(1 << 14)
>  #define   DP_AUX_CH_CTL_FS_DATA_AUX_REG_SKL	(1 << 13)
>  #define   DP_AUX_CH_CTL_GTC_DATA_AUX_REG_SKL	(1 << 12)
> +#define   DP_AUX_CH_CTL_TBT_IO			(1 << 11)
>  #define   DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL_MASK (0x1f << 5)
>  #define   DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(c) (((c) - 1) << 5)
>  #define   DP_AUX_CH_CTL_SYNC_PULSE_SKL(c)   ((c) - 1)
> diff --git a/drivers/gpu/drm/i915/intel_dp.c
> b/drivers/gpu/drm/i915/intel_dp.c
> index cc33d7c..7c60e17 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -1208,15 +1208,23 @@ static uint32_t skl_get_aux_send_ctl(struct
> intel_dp *intel_dp,
>  				      int send_bytes,
>  				      uint32_t unused)
>  {
> -	return DP_AUX_CH_CTL_SEND_BUSY |
> -	       DP_AUX_CH_CTL_DONE |
> -	       DP_AUX_CH_CTL_INTERRUPT |
> -	       DP_AUX_CH_CTL_TIME_OUT_ERROR |
> -	       DP_AUX_CH_CTL_TIME_OUT_MAX |
> -	       DP_AUX_CH_CTL_RECEIVE_ERROR |
> -	       (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) |
> -	       DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(32) |
> -	       DP_AUX_CH_CTL_SYNC_PULSE_SKL(32);
> +	struct intel_digital_port *intel_dig_port =
> dp_to_dig_port(intel_dp);
> +	uint32_t ret;
> +
> +	ret = DP_AUX_CH_CTL_SEND_BUSY |
> +	      DP_AUX_CH_CTL_DONE |
> +	      DP_AUX_CH_CTL_INTERRUPT |
> +	      DP_AUX_CH_CTL_TIME_OUT_ERROR |
> +	      DP_AUX_CH_CTL_TIME_OUT_MAX |
> +	      DP_AUX_CH_CTL_RECEIVE_ERROR |
> +	      (send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) |
> +	      DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(32) |
> +	      DP_AUX_CH_CTL_SYNC_PULSE_SKL(32);
> +
> +	if (intel_dig_port->tc_type == TC_PORT_TBT)
> +		ret |= DP_AUX_CH_CTL_TBT_IO;
> +
> +	return ret;
>  }
>  
>  static int
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