linux-kernel - Re: [PATCH v2 1/1] mmc: sdhci-of-dwcmshc: add callback functions for dwcmshc

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Date: Sun, 28 Apr 2024 18:40:09 -0700
From: Drew Fustini <dfustini@...storrent.com>
To: Chen Wang <unicornxw@...il.com>
Cc: adrian.hunter@...el.com, ulf.hansson@...aro.org,
	linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
	jszhang@...nel.org, dfustini@...libre.com,
	yifeng.zhao@...k-chips.com, shawn.lin@...k-chips.com,
	chao.wei@...hgo.com, haijiao.liu@...hgo.com,
	xiaoguang.xing@...hgo.com, tingzhu.wang@...hgo.com,
	guoren@...nel.org, inochiama@...look.com, unicorn_wang@...look.com
Subject: Re: [PATCH v2 1/1] mmc: sdhci-of-dwcmshc: add callback functions for
 dwcmshc_priv

On Sun, Apr 28, 2024 at 10:32:41AM +0800, Chen Wang wrote:
> From: Chen Wang <unicorn_wang@...look.com>
> 
> The current framework is not easily extended to support new SOCs.
> For example, in the current code we see that the SOC-level
> structure `rk35xx_priv` and related logic are distributed in
> functions such as dwcmshc_probe/dwcmshc_remove/dwcmshc_suspend/......,
> which is inappropriate.
> 
> The solution is to abstract some possible common operations of soc
> into virtual members of `dwcmshc_priv`. Each soc implements its own
> corresponding callback function and registers it in init function.
> dwcmshc framework is responsible for calling these callback functions
> in those dwcmshc_xxx functions.
> 
> Signed-off-by: Chen Wang <unicorn_wang@...look.com>

I have tested this with the eMMC and microSD on the Lichee Pi 4a which
has the T-Head TH1520 SoC.

Tested-by: Drew Fustini <dfustini@...storrent.com> # TH1520

Thanks,
Drew