linux-kernel - Re: [PATCH 5/7] drm/msm/dp: Simplify with drm_dp_{max_link_rate,max_lane

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Message-ID: <388ccc1f-9185-31ba-ebe2-0375423c7825@quicinc.com>
Date:   Thu, 31 Aug 2023 13:29:07 -0700
From:   Kuogee Hsieh <quic_khsieh@...cinc.com>
To:     Stephen Boyd <swboyd@...omium.org>,
        Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
CC:     <linux-kernel@...r.kernel.org>, <patches@...ts.linux.dev>,
        Sean Paul <sean@...rly.run>, <dri-devel@...ts.freedesktop.org>,
        <freedreno@...ts.freedesktop.org>,
        Vinod Polimera <quic_vpolimer@...cinc.com>
Subject: Re: [PATCH 5/7] drm/msm/dp: Simplify with
 drm_dp_{max_link_rate,max_lane_count}()


On 8/29/2023 11:47 AM, Stephen Boyd wrote:
> These are open-coded versions of common functions. Replace them with the
> common code to improve readability.
>
> Cc: Vinod Polimera <quic_vpolimer@...cinc.com>
> Cc: Kuogee Hsieh <quic_khsieh@...cinc.com>
> Signed-off-by: Stephen Boyd <swboyd@...omium.org>
Tested-by: Kuogee Hsieh <quic_khsieh@...cinc.com>
Reviewed-by: Kuogee Hsieh <quic_khsieh@...cinc.com>
> ---
>   drivers/gpu/drm/msm/dp/dp_panel.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/dp/dp_panel.c b/drivers/gpu/drm/msm/dp/dp_panel.c
> index 0893522ae158..97ba41593820 100644
> --- a/drivers/gpu/drm/msm/dp/dp_panel.c
> +++ b/drivers/gpu/drm/msm/dp/dp_panel.c
> @@ -58,8 +58,8 @@ static int dp_panel_read_dpcd(struct dp_panel *dp_panel)
>   	major = (link_info->revision >> 4) & 0x0f;
>   	minor = link_info->revision & 0x0f;
>   
> -	link_info->rate = drm_dp_bw_code_to_link_rate(dpcd[DP_MAX_LINK_RATE]);
> -	link_info->num_lanes = dpcd[DP_MAX_LANE_COUNT] & DP_MAX_LANE_COUNT_MASK;
> +	link_info->rate = drm_dp_max_link_rate(dpcd);
> +	link_info->num_lanes = drm_dp_max_lane_count(dpcd);
>   
>   	/* Limit data lanes from data-lanes of endpoint property of dtsi */
>   	if (link_info->num_lanes > dp_panel->max_dp_lanes)