[PATCH drm-dp 1/4] drm/hisilicon/hibmc: add dp aux in hibmc drivers

[s00452708]

> On Mon, 30 Sep 2024, shiyongbang<shiyongbang at huawei.com> wrote:
>> From: baihan li<libaihan at huawei.com>
>>
>> Add dp aux read/write functions. They are basic functions
>>   and will be used later.
> You're supposed to use struct drm_dp_aux, add a .transfer function,
> initialize it with intel_dp_aux_init(), and register with
> intel_dp_aux_register(). Then you can use the standard drm_dp_dpcd_*
> calls to access aux. They handle a lot of the boilerplate for DP
> aux. You'll also get the i2c and aux device nodes for free. As well as a
> lot of helpers based on struct drm_dp_aux interface.
>
> There's a lot of duplication in this patch otherwise too. The DPCD
> register macros, a dupe for struct drm_dp_aux_msg, etc.
>
>
> BR,
> Jani.

Hi Jani,
   Thanks for your advice. I didn't notice that the drm framework
   has this implementation, and I'll use the struct drm_dp_aux and
   drm_dp_aux_init() function in the next version to simplify my code.

   And I will check if there are others implementation in drm_dp_helper.c.
   
   Baihan Li.
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