[PATCH v15 1/2] drm: Add kms driver for loongson display controller

[Sui Jingfeng]

Hi,

On 2023/6/19 17:18, Huacai Chen wrote:
> In my opinion we needn't know the cpu type in a GPU driver, remove
> this can also remove ifdefs (and lsdc_probe.c/lsdc_probe.h can be
> removed). Meanwhile, lsdc_identify() can do something to identify GPU,
> not CPU.

Loongson Display controller don't has a valid register to record the 
revision/model information.

There a lot of the drm drivers which identify CPUs (such as i915).

We may  want to write SIMD accelerated memcpy for the TTM move function 
in the future.

Before we do these, we need to know what's the arch, did the unaligned 
access is supported by the hardware.

did the SIMD(MSA or LASX) get supported by both the kernel and GCC 
compiler.


-- 
Jingfeng