On Mon, Jan 08, 2024 at 06:21:31PM -0500, Frank Li wrote:
> Add IMX6_PCIE_FLAG_HAS_PHYDRV bitmask define for drvdata::flags. Reduce
> switch-case structure for handling phy.
>
"Since some i.MX platforms make use of the separate PHY driver, use
IMX6_PCIE_FLAG_HAS_PHYDRV flag to identify them and get the reference to PHY
from DT. This simplifies the code."
> Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
- Mani
> ---
>
> Notes:
> Change from v7 to v8:
> - renmae IMX6_PCIE_FLAG_HAS_PHY to IMX6_PCIE_FLAG_HAS_PHYDRV
> Change from v6 to v7:
> - none
> Change from v4 to v5:
> - none, Keep IMX6_PCIE_FLAG_HAS_PHY to indicate dts mismatch when platform
> require phy suppport.
>
> Change from v1 to v3:
> - none
>
> drivers/pci/controller/dwc/pci-imx6.c | 24 +++++++++++++++++-------
> 1 file changed, 17 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
> index 4912c6b08ecf8..adc90099ec7f8 100644
> --- a/drivers/pci/controller/dwc/pci-imx6.c
> +++ b/drivers/pci/controller/dwc/pci-imx6.c
> @@ -60,6 +60,9 @@ enum imx6_pcie_variants {
> #define IMX6_PCIE_FLAG_IMX6_PHY BIT(0)
> #define IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE BIT(1)
> #define IMX6_PCIE_FLAG_SUPPORTS_SUSPEND BIT(2)
> +#define IMX6_PCIE_FLAG_HAS_PHYDRV BIT(3)
> +
> +#define imx6_check_flag(pci, val) (pci->drvdata->flags & val)
>
> #define IMX6_PCIE_MAX_CLKS 6
>
> @@ -1277,6 +1280,13 @@ static int imx6_pcie_probe(struct platform_device *pdev)
> if (ret)
> return ret;
>
> + if (imx6_check_flag(imx6_pcie, IMX6_PCIE_FLAG_HAS_PHYDRV)) {
> + imx6_pcie->phy = devm_phy_get(dev, "pcie-phy");
> + if (IS_ERR(imx6_pcie->phy))
> + return dev_err_probe(dev, PTR_ERR(imx6_pcie->phy),
> + "failed to get pcie phy\n");
> + }
> +
> switch (imx6_pcie->drvdata->variant) {
> case IMX7D:
> if (dbi_base->start == IMX8MQ_PCIE2_BASE_ADDR)
> @@ -1306,11 +1316,6 @@ static int imx6_pcie_probe(struct platform_device *pdev)
> return dev_err_probe(dev, PTR_ERR(imx6_pcie->apps_reset),
> "failed to get pcie apps reset control\n");
>
> - imx6_pcie->phy = devm_phy_get(dev, "pcie-phy");
> - if (IS_ERR(imx6_pcie->phy))
> - return dev_err_probe(dev, PTR_ERR(imx6_pcie->phy),
> - "failed to get pcie phy\n");
> -
> break;
> default:
> break;
> @@ -1458,14 +1463,17 @@ static const struct imx6_pcie_drvdata drvdata[] = {
> },
> [IMX8MM] = {
> .variant = IMX8MM,
> - .flags = IMX6_PCIE_FLAG_SUPPORTS_SUSPEND,
> + .flags = IMX6_PCIE_FLAG_SUPPORTS_SUSPEND |
> + IMX6_PCIE_FLAG_HAS_PHYDRV |
> + IMX6_PCIE_FLAG_HAS_APP_RESET,
> .gpr = "fsl,imx8mm-iomuxc-gpr",
> .clk_names = imx6_3clks_bus_pcie_aux,
> .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_aux),
> },
> [IMX8MP] = {
> .variant = IMX8MP,
> - .flags = IMX6_PCIE_FLAG_SUPPORTS_SUSPEND,
> + .flags = IMX6_PCIE_FLAG_SUPPORTS_SUSPEND |
> + IMX6_PCIE_FLAG_HAS_PHYDRV,
> .gpr = "fsl,imx8mp-iomuxc-gpr",
> .clk_names = imx6_3clks_bus_pcie_aux,
> .clks_cnt = ARRAY_SIZE(imx6_3clks_bus_pcie_aux),
> @@ -1479,6 +1487,7 @@ static const struct imx6_pcie_drvdata drvdata[] = {
> },
> [IMX8MM_EP] = {
> .variant = IMX8MM_EP,
> + .flags = IMX6_PCIE_FLAG_HAS_PHYDRV,
> .mode = DW_PCIE_EP_TYPE,
> .gpr = "fsl,imx8mm-iomuxc-gpr",
> .clk_names = imx6_3clks_bus_pcie_aux,
> @@ -1486,6 +1495,7 @@ static const struct imx6_pcie_drvdata drvdata[] = {
> },
> [IMX8MP_EP] = {
> .variant = IMX8MP_EP,
> + .flags = IMX6_PCIE_FLAG_HAS_PHYDRV,
> .mode = DW_PCIE_EP_TYPE,
> .gpr = "fsl,imx8mp-iomuxc-gpr",
> .clk_names = imx6_3clks_bus_pcie_aux,
> --
> 2.34.1
>
--
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