linux-kernel - Re: [PATCH v3 3/3] drm/panel-fannal-c3004: Add fannal c3004 DSI panel

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Message-ID: <14fab6aa-2f9a-c3bc-5ed4-0d4fb20b20d6@linaro.org>
Date:   Wed, 7 Jun 2023 15:57:06 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Paulo Pavacic <pavacic.p@...il.com>
Cc:     neil.armstrong@...aro.org, sam@...nborg.org, airlied@...il.com,
        daniel@...ll.ch, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v3 3/3] drm/panel-fannal-c3004: Add fannal c3004 DSI panel

On 07/06/2023 15:38, Paulo Pavacic wrote:
> Hello,
> 
> uto, 6. lip 2023. u 16:45 Krzysztof Kozlowski
> <krzysztof.kozlowski@...aro.org> napisao je:
>>
>> On 06/06/2023 16:07, Paulo Pavacic wrote:
>>> Fannal C3004 is a 480x800 display made by fannal that requires
>>> DCS initialization sequences.
>>>
>>> Signed-off-by: Paulo Pavacic <pavacic.p@...il.com>
>>> ---
>>> v4 changelog:
>>>  - formatting and style changes
>>
>> Are you sure? I see other changes - removal of some code, handling
>> errors and GPIO.
>>
>>>  - change community room
>>
>> What does it mean? Where is this change in this patch?
>>
>> ...
>>
>>> +
>>> +static const struct drm_panel_funcs fannal_panel_funcs = {
>>> +     .prepare = fannal_panel_prepare,
>>> +     .unprepare = fannal_panel_unprepare,
>>> +     .enable = fannal_panel_enable,
>>> +     .disable = fannal_panel_disable,
>>> +     .get_modes = fannal_panel_get_modes,
>>> +};
>>> +
>>> +static int fannal_panel_probe(struct mipi_dsi_device *dsi)
>>> +{
>>> +     struct device *dev = &dsi->dev;
>>> +     struct fannal_panel_data *panel_data;
>>> +     int ret;
>>> +
>>> +     panel_data = devm_kzalloc(&dsi->dev, sizeof(*panel_data), GFP_KERNEL);
>>> +
>>
>> Drop blank line.
>>
>>> +     if (!panel_data)
>>> +             return -ENOMEM;
>>> +
>>> +     panel_data->reset =
>>
>> You have wrong wrapping here. devm_gpiod_get_optional() goes after =.
> 
> I'm not sure why, but clang-format makes it that way. I'm using this
> style: https://raw.githubusercontent.com/torvalds/linux/master/.clang-format
> Do you have some other style?

Linux kernel coding style.

https://elixir.bootlin.com/linux/v6.4-rc5/source/Documentation/process/coding-style.rst

Don't use clang or other non-kernel formatters.


Best regards,
Krzysztof