linux-kernel - RE: [PATCH v12 01/13] PCI: imx6: Move imx6_pcie_grp_offset(), imx6_pcie_configure

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Date:   Thu, 16 Jun 2022 02:23:35 +0000
From:   Hongxing Zhu <hongxing.zhu@....com>
To:     Bjorn Helgaas <helgaas@...nel.org>,
        Lucas Stach <l.stach@...gutronix.de>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Brown <broonie@...nel.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Fabio Estevam <festevam@...il.com>,
        Francesco Dolcini <francesco.dolcini@...adex.com>
CC:     "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        dl-linux-imx <linux-imx@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>
Subject: RE: [PATCH v12 01/13] PCI: imx6: Move imx6_pcie_grp_offset(),
 imx6_pcie_configure_type() earlier


> -----Original Message-----
> From: Bjorn Helgaas <helgaas@...nel.org>
> Sent: 2022年6月16日 7:16
> To: Hongxing Zhu <hongxing.zhu@....com>; Lucas Stach
> <l.stach@...gutronix.de>; Rob Herring <robh+dt@...nel.org>; Mark Brown
> <broonie@...nel.org>; Lorenzo Pieralisi <lorenzo.pieralisi@....com>; Fabio
> Estevam <festevam@...il.com>; Francesco Dolcini
> <francesco.dolcini@...adex.com>
> Cc: linux-pci@...r.kernel.org; linux-arm-kernel@...ts.infradead.org;
> linux-kernel@...r.kernel.org; kernel@...gutronix.de; dl-linux-imx
> <linux-imx@....com>; Bjorn Helgaas <bhelgaas@...gle.com>
> Subject: [PATCH v12 01/13] PCI: imx6: Move imx6_pcie_grp_offset(),
> imx6_pcie_configure_type() earlier
> 
> From: Bjorn Helgaas <bhelgaas@...gle.com>
> 
> Move imx6_pcie_grp_offset() and imx6_pcie_configure_type() earlier in the file
> since they depend on nothing and are used by several other functions that will
> be moved earlier.  No functional change intended.
> 
> Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
Acked-by: Richard Zhu <hongxing.zhu@....com>

Best Regards
Richard Zhu

> ---
>  drivers/pci/controller/dwc/pci-imx6.c | 50 +++++++++++++--------------
>  1 file changed, 25 insertions(+), 25 deletions(-)
> 
> diff --git a/drivers/pci/controller/dwc/pci-imx6.c
> b/drivers/pci/controller/dwc/pci-imx6.c
> index 7a285fb0f619..8653ca8cbfb9 100644
> --- a/drivers/pci/controller/dwc/pci-imx6.c
> +++ b/drivers/pci/controller/dwc/pci-imx6.c
> @@ -146,6 +146,31 @@ struct imx6_pcie {
>  #define PHY_RX_OVRD_IN_LO_RX_DATA_EN		BIT(5)
>  #define PHY_RX_OVRD_IN_LO_RX_PLL_EN		BIT(3)
> 
> +static unsigned int imx6_pcie_grp_offset(const struct imx6_pcie
> +*imx6_pcie) {
> +	WARN_ON(imx6_pcie->drvdata->variant != IMX8MQ &&
> +		imx6_pcie->drvdata->variant != IMX8MM);
> +	return imx6_pcie->controller_id == 1 ? IOMUXC_GPR16 :
> IOMUXC_GPR14; }
> +
> +static void imx6_pcie_configure_type(struct imx6_pcie *imx6_pcie) {
> +	unsigned int mask, val;
> +
> +	if (imx6_pcie->drvdata->variant == IMX8MQ &&
> +	    imx6_pcie->controller_id == 1) {
> +		mask = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE;
> +		val  = FIELD_PREP(IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE,
> +				  PCI_EXP_TYPE_ROOT_PORT);
> +	} else {
> +		mask = IMX6Q_GPR12_DEVICE_TYPE;
> +		val  = FIELD_PREP(IMX6Q_GPR12_DEVICE_TYPE,
> +				  PCI_EXP_TYPE_ROOT_PORT);
> +	}
> +
> +	regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, mask,
> val); }
> +
>  static int pcie_phy_poll_ack(struct imx6_pcie *imx6_pcie, bool exp_val)  {
>  	struct dw_pcie *pci = imx6_pcie->pci;
> @@ -415,13 +440,6 @@ static void imx6_pcie_assert_core_reset(struct
> imx6_pcie *imx6_pcie)
>  					imx6_pcie->gpio_active_high);
>  }
> 
> -static unsigned int imx6_pcie_grp_offset(const struct imx6_pcie *imx6_pcie)
> -{
> -	WARN_ON(imx6_pcie->drvdata->variant != IMX8MQ &&
> -		imx6_pcie->drvdata->variant != IMX8MM);
> -	return imx6_pcie->controller_id == 1 ? IOMUXC_GPR16 : IOMUXC_GPR14;
> -}
> -
>  static int imx6_pcie_enable_ref_clk(struct imx6_pcie *imx6_pcie)  {
>  	struct dw_pcie *pci = imx6_pcie->pci;
> @@ -617,24 +635,6 @@ static void imx6_pcie_deassert_core_reset(struct
> imx6_pcie *imx6_pcie)
>  	}
>  }
> 
> -static void imx6_pcie_configure_type(struct imx6_pcie *imx6_pcie) -{
> -	unsigned int mask, val;
> -
> -	if (imx6_pcie->drvdata->variant == IMX8MQ &&
> -	    imx6_pcie->controller_id == 1) {
> -		mask   = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE;
> -		val    = FIELD_PREP(IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE,
> -				    PCI_EXP_TYPE_ROOT_PORT);
> -	} else {
> -		mask = IMX6Q_GPR12_DEVICE_TYPE;
> -		val  = FIELD_PREP(IMX6Q_GPR12_DEVICE_TYPE,
> -				  PCI_EXP_TYPE_ROOT_PORT);
> -	}
> -
> -	regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, mask,
> val);
> -}
> -
>  static void imx6_pcie_init_phy(struct imx6_pcie *imx6_pcie)  {
>  	switch (imx6_pcie->drvdata->variant) {
> --
> 2.25.1