linux-kernel - Re: [PATCH v3 07/10] drm/msm/dsi: Remove custom DSI config handling

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Date:   Tue, 14 Mar 2023 11:42:28 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Marijn Suijten <marijn.suijten@...ainline.org>
Cc:     Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Krishna Manikandan <quic_mkrishn@...cinc.com>,
        Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh@...nel.org>, linux-arm-msm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 07/10] drm/msm/dsi: Remove custom DSI config handling



On 14.03.2023 01:07, Marijn Suijten wrote:
> On 2023-03-07 14:01:45, Konrad Dybcio wrote:
>> Now that the only user is handled by common code, remove the option to
>> specify custom handlers through match data.
>>
>> This is effectively a revert of commit:
>> 5ae15e76271 ("drm/msm/dsi: Allow to specify dsi config as pdata")
> 
> Would it also be worth to mention something along these lines in the
> previous patch, but for ee1f09678f14 ("drm/msm/dsi: Add support for
> qcm2290 dsi controller")?
50/50, it wouldn't hurt but it doesn't sound groundbreaking to skip it..

Konrad
> 
>> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
>> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> 
> Reviewed-by: Marijn Suijten <marijn.suijten@...ainline.org>
> 
>> ---
>>  drivers/gpu/drm/msm/dsi/dsi.c      | 4 ++--
>>  drivers/gpu/drm/msm/dsi/dsi_host.c | 4 ----
>>  2 files changed, 2 insertions(+), 6 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c
>> index 90d43628b22b..e0b911af618d 100644
>> --- a/drivers/gpu/drm/msm/dsi/dsi.c
>> +++ b/drivers/gpu/drm/msm/dsi/dsi.c
>> @@ -173,10 +173,10 @@ static int dsi_dev_remove(struct platform_device *pdev)
>>  }
>>  
>>  static const struct of_device_id dt_match[] = {
>> -	{ .compatible = "qcom,mdss-dsi-ctrl", .data = NULL /* autodetect cfg */ },
>> +	{ .compatible = "qcom,mdss-dsi-ctrl" },
>>  
>>  	/* Deprecated, don't use */
>> -	{ .compatible = "qcom,dsi-ctrl-6g-qcm2290", .data = NULL },
>> +	{ .compatible = "qcom,dsi-ctrl-6g-qcm2290" },
>>  	{}
>>  };
>>  
>> diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
>> index 9cfb9e91bfea..961689a255c4 100644
>> --- a/drivers/gpu/drm/msm/dsi/dsi_host.c
>> +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
>> @@ -214,10 +214,6 @@ static const struct msm_dsi_cfg_handler *dsi_get_config(
>>  	int ret;
>>  	u32 major = 0, minor = 0;
>>  
>> -	cfg_hnd = device_get_match_data(dev);
>> -	if (cfg_hnd)
>> -		return cfg_hnd;
>> -
>>  	ahb_clk = msm_clk_get(msm_host->pdev, "iface");
>>  	if (IS_ERR(ahb_clk)) {
>>  		pr_err("%s: cannot get interface clock\n", __func__);
>>
>> -- 
>> 2.39.2
>>