linux-kernel - Re: [PATCH V2 2/4] mmc: sdhci-msm: Add msm version specific ops and data structures

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Message-ID: <CAE=gft41G9tBHORVMeN1PbwLut+E2m2q1wcQ3G5bVHDZnhYXAg@mail.gmail.com>
Date:   Mon, 11 Jun 2018 14:23:02 -0700
From:   Evan Green <evgreen@...omium.org>
To:     adrian.hunter@...el.com
Cc:     vviswana@...eaurora.org, Ulf Hansson <ulf.hansson@...aro.org>,
        robh+dt@...nel.org, mark.rutland@....com,
        linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
        shawn.lin@...k-chips.com, linux-arm-msm@...r.kernel.org,
        georgi.djakov@...aro.org, devicetree@...r.kernel.org,
        asutoshd@...eaurora.org, stummala@...eaurora.org,
        venkatg@...eaurora.org, jeremymc@...hat.com,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        riteshh@...eaurora.org, vbadigan@...eaurora.org,
        Doug Anderson <dianders@...gle.com>, sayalil@...eaurora.org
Subject: Re: [PATCH V2 2/4] mmc: sdhci-msm: Add msm version specific ops and
 data structures

On Tue, Jun 5, 2018 at 11:32 PM Adrian Hunter <adrian.hunter@...el.com> wrote:
>
> On 29/05/18 12:52, Vijay Viswanath wrote:
> > In addition to offsets of certain registers changing, the registers in
> > core_mem have been shifted to HC mem as well. To access these
> > registers, define msm version specific functions. These functions can
> > be loaded into the function pointers at the time of probe based on
> > the msm version detected.
> >
> > Also defind new data structure to hold version specific Ops and
> > register addresses.
> >
> > Signed-off-by: Sayali Lokhande <sayalil@...eaurora.org>
> > Signed-off-by: Vijay Viswanath <vviswana@...eaurora.org>
>
> Acked-by: Adrian Hunter <adrian.hunter@...el.com>
>
> > ---
> >  drivers/mmc/host/sdhci-msm.c | 77 ++++++++++++++++++++++++++++++++++++++++++++
> >  1 file changed, 77 insertions(+)
> >
> > diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
> > index 4050c99..2a66aa0 100644
> > --- a/drivers/mmc/host/sdhci-msm.c
> > +++ b/drivers/mmc/host/sdhci-msm.c
> > @@ -226,6 +226,24 @@ struct sdhci_msm_offset {
> >       .core_ddr_config_2 = 0x1bc,
> >  };
> >
> > +struct sdhci_msm_variant_ops {
> > +     u8 (*msm_readb_relaxed)(struct sdhci_host *host, u32 offset);
> > +     u32 (*msm_readl_relaxed)(struct sdhci_host *host, u32 offset);
> > +     void (*msm_writeb_relaxed)(u8 val, struct sdhci_host *host, u32 offset);
> > +     void (*msm_writel_relaxed)(u32 val, struct sdhci_host *host,
> > +                     u32 offset);
> > +};

Since you removed the implementations, and these are also trivial to
re-derive, I'd suggest removing msm_readb_relaxed and
msm_writeb_relaxed members from the struct. Other than that, you can
add my Reviewed-by.
-Evan