linux-kernel - Re: [PATCH v9 01/11] phy: HiSilicon: Add driver for Kirin 970 PCIe PHY

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Message-ID: <YQ02cc1dtqQBlT4/@matsya>
Date:   Fri, 6 Aug 2021 18:47:37 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>, linuxarm@...wei.com,
        mauro.chehab@...wei.com, Rob Herring <robh@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kishon Vijay Abraham I <kishon@...com>,
        Manivannan Sadhasivam <mani@...nel.org>,
        linux-kernel@...r.kernel.org, linux-phy@...ts.infradead.org
Subject: Re: [PATCH v9 01/11] phy: HiSilicon: Add driver for Kirin 970 PCIe
 PHY

On 04-08-21, 18:02, Mauro Carvalho Chehab wrote:

> +/* define ie,oe cfg */
> +#define IO_IE_EN_HARD_BYPASS         (0x1 << 27)
> +#define IO_OE_EN_HARD_BYPASS         (0x1 << 11)
> +#define IO_HARD_CTRL_DEBOUNCE_BYPASS (0x1 << 10)
> +#define IO_OE_GT_MODE                (0x2 << 7)
> +#define DEBOUNCE_WAITCFG_IN          (0xf << 20)
> +#define DEBOUNCE_WAITCFG_OUT         (0xf << 13)

Why not use BIT() or GENMASK for these?

> +/* Registers in PCIePHY */
> +static inline void hi3670_apb_phy_writel(struct hi3670_pcie_phy *phy,
> +					 u32 val, u32 reg)
> +{
> +	writel(val, phy->base + 0x40000 + reg);

magic 0x40000?

> +}
> +
> +static inline u32 hi3670_apb_phy_readl(struct hi3670_pcie_phy *phy, u32 reg)
> +{
> +	return readl(phy->base + 0x40000 + reg);
> +}
> +
> +static inline void kirin_apb_natural_phy_writel(struct hi3670_pcie_phy *phy,
> +						u32 val, u32 reg)
> +{
> +	writel(val, phy->base + reg * 4);

why * 4 ..?

> +static void hi3670_pcie_set_eyeparam(struct hi3670_pcie_phy *phy)
> +{
> +	u32 val;
> +
> +	val = kirin_apb_natural_phy_readl(phy, RAWLANEN_DIG_PCS_XF_TX_OVRD_IN_1);
> +
> +	if (phy->eye_param[1] != EYEPARAM_NOCFG) {
> +		val &= (~0xf00);
> +		val |= (phy->eye_param[1] << 8) | (0x1 << 12);
> +	}

again too many magic numbers, Do check FIELD_GET/PREP macros for these?
-- 
~Vinod