On 04-05-20, 16:26, Dilip Kota wrote:
>
> On 5/4/2020 3:29 PM, Vinod Koul wrote:
> > On 30-04-20, 15:15, Dilip Kota wrote:
> >
> > > +enum {
> > > + PHY_0,
> > > + PHY_1,
> > > + PHY_MAX_NUM
> > PHY_MAX_NUM = PHY_1?
> Driver is using it for no. of PHYs/maximum PHY id.
Ok
> > > +static inline void combo_phy_w32_off_mask(void __iomem *base, unsigned int reg,
> > > + u32 mask, u32 val)
> > > +{
> > > + u32 reg_val;
> > > +
> > > + reg_val = readl(base + reg);
> > > + reg_val &= ~mask;
> > > + reg_val |= FIELD_PREP(mask, val);
> > > + writel(reg_val, base + reg);
> > bypassing regmap here... why?
> It is not regmap address, one of the below two addresses are passed to this
> function.
okay, perhaps add a comment somewhere that regmap is not used for this
base?
> struct intel_combo_phy {
> ...
> void __iomem *app_base;
> void __iomem *cr_base;
> ...
> }
> > > +static int intel_cbphy_calibrate(struct phy *phy)
> > > +{
> > > + struct intel_cbphy_iphy *iphy = phy_get_drvdata(phy);
> > > + struct intel_combo_phy *cbphy = iphy->parent;
> > > + void __iomem *cr_base = cbphy->cr_base;
> > > + int val, ret, id;
> > > +
> > > + if (cbphy->phy_mode != PHY_XPCS_MODE)
> > > + return 0;
> > > +
> > > + id = PHY_ID(iphy);
> > > +
> > > + /* trigger auto RX adaptation */
> > > + combo_phy_w32_off_mask(cr_base, CR_ADDR(PCS_XF_ATE_OVRD_IN_2, id),
> > > + ADAPT_REQ_MSK, 3);
> > > + /* Wait RX adaptation to finish */
> > > + ret = readl_poll_timeout(cr_base + CR_ADDR(PCS_XF_RX_ADAPT_ACK, id),
> > > + val, val & RX_ADAPT_ACK_BIT, 10, 5000);
> > > + if (ret)
> > > + dev_err(cbphy->dev, "RX Adaptation failed!\n");
> > you want to continue her and not return error?
>
> Next step is stopping the Adaptation, it should be done in both error and
> success case.
Again documenting this helps, pls add some comments on this behaviour
--
~Vinod
