linux-kernel - Re: [PATCH v2 08/15] phy: qcom-qmp-pcie: add register init helper

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Date:   Wed, 19 Oct 2022 15:51:28 +0200
From:   Johan Hovold <johan@...nel.org>
To:     Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc:     Johan Hovold <johan+linaro@...nel.org>,
        Vinod Koul <vkoul@...nel.org>, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 08/15] phy: qcom-qmp-pcie: add register init helper

On Wed, Oct 19, 2022 at 04:44:33PM +0300, Dmitry Baryshkov wrote:
> On 19/10/2022 16:25, Johan Hovold wrote:
> > On Wed, Oct 19, 2022 at 04:12:02PM +0300, Dmitry Baryshkov wrote:
> >> On 19/10/2022 14:35, Johan Hovold wrote:
> >>> Generalise the serdes initialisation helper so that it can be used to
> >>> initialise all the PHY registers (e.g. serdes, tx, rx, pcs).
> >>>
> >>> Note that this defers the ungating of the PIPE clock somewhat, which is
> >>> fine as it isn't needed until starting the PHY.
> >>>
> >>> Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
> >>> ---
> >>>    drivers/phy/qualcomm/phy-qcom-qmp-pcie.c | 51 +++++++-----------------
> >>>    1 file changed, 15 insertions(+), 36 deletions(-)
> >>>

> >>> -static void qmp_pcie_pcs_init(struct qmp_pcie *qmp, const struct qmp_phy_cfg_tables *tables)
> >>> -{
> >>> -	void __iomem *pcs = qmp->pcs;
> >>> -	void __iomem *pcs_misc = qmp->pcs_misc;
> >>> -
> >>> -	if (!tables)
> >>> -		return;
> >>>    
> >>> -	qmp_pcie_configure(pcs, tables->pcs, tables->pcs_num);
> >>> -	qmp_pcie_configure(pcs_misc, tables->pcs_misc, tables->pcs_misc_num);
> >>> +	qmp_pcie_configure(pcs, tbls->pcs, tbls->pcs_num);
> >>> +	qmp_pcie_configure(pcs_misc, tbls->pcs_misc, tbls->pcs_misc_num);
> >>
> >> Nit: could we please keep it as `tables'?
> > 
> > I considered that but found that the longer identifier hurt
> > readability so I prefer to use "tbls" here.

> I'd say, it's up to Vinod. I'd prefer the second version.

Ultimately yes, but as the author of these patches I do have a say here.

Johan