| Message ID | 20231227182727.1747435-8-Frank.Li@nxp.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | PCI: imx6: Clean up and add imx95 pci support | expand |
On Wed, Dec 27, 2023 at 01:27:18PM -0500, Frank Li wrote: > Add drvdata::mode_off and drvdata::mode_mask to simple simplify > imx6_pcie_configure_type() logic. > > Signed-off-by: Frank Li <Frank.Li@nxp.com> Couple of comments below. > --- > > Notes: > Change from v2 to v3 > - none > Change from v1 to v2 > - use ffs() to fixe build error. > > drivers/pci/controller/dwc/pci-imx6.c | 60 ++++++++++++++++++--------- > 1 file changed, 40 insertions(+), 20 deletions(-) > > diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c > index 588bfb616260e..717e8fa030deb 100644 > --- a/drivers/pci/controller/dwc/pci-imx6.c > +++ b/drivers/pci/controller/dwc/pci-imx6.c > @@ -68,6 +68,7 @@ enum imx6_pcie_variants { > > #define IMX6_PCIE_MAX_CLKS 6 > > +#define IMX6_PCIE_MAX_INSTANCES 2 > struct imx6_pcie_drvdata { > enum imx6_pcie_variants variant; > enum dw_pcie_device_mode mode; > @@ -77,6 +78,8 @@ struct imx6_pcie_drvdata { > const char *clk_names[IMX6_PCIE_MAX_CLKS]; > const u32 ltssm_off; > const u32 ltssm_mask; > + const u32 mode_off[IMX6_PCIE_MAX_INSTANCES]; > + const u32 mode_mask[IMX6_PCIE_MAX_INSTANCES]; > }; > > struct imx6_pcie { > @@ -174,32 +177,25 @@ static unsigned int imx6_pcie_grp_offset(const struct imx6_pcie *imx6_pcie) > > static void imx6_pcie_configure_type(struct imx6_pcie *imx6_pcie) > { > - unsigned int mask, val, mode; > + const struct imx6_pcie_drvdata *drvdata = imx6_pcie->drvdata; > + unsigned int mask, val, mode, id; > > - if (imx6_pcie->drvdata->mode == DW_PCIE_EP_TYPE) > + if (drvdata->mode == DW_PCIE_EP_TYPE) > mode = PCI_EXP_TYPE_ENDPOINT; > else > mode = PCI_EXP_TYPE_ROOT_PORT; > > - switch (imx6_pcie->drvdata->variant) { > - case IMX8MQ: > - case IMX8MQ_EP: > - if (imx6_pcie->controller_id == 1) { > - mask = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE; > - val = FIELD_PREP(IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, > - mode); > - } else { > - mask = IMX6Q_GPR12_DEVICE_TYPE; > - val = FIELD_PREP(IMX6Q_GPR12_DEVICE_TYPE, mode); > - } > - break; > - default: > - mask = IMX6Q_GPR12_DEVICE_TYPE; > - val = FIELD_PREP(IMX6Q_GPR12_DEVICE_TYPE, mode); > - break; > - } > + id = imx6_pcie->controller_id; > + > + /* If mode_mask[id] is zero, means each controller have its individual gpr */ > + if (!drvdata->mode_mask[id]) > + id = 0; > + > + mask = drvdata->mode_mask[id]; > + /* FIELD_PREP mask have been constant */ No need of this comment. > + val = mode << (ffs(mask) - 1); > > - regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, mask, val); > + regmap_update_bits(imx6_pcie->iomuxc_gpr, drvdata->mode_off[id], mask, val); > } > > static int pcie_phy_poll_ack(struct imx6_pcie *imx6_pcie, bool exp_val) > @@ -1376,6 +1372,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > .clk_names = {"pcie_bus", "pcie", "pcie_phy"}, > .ltssm_off = IOMUXC_GPR12, > .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, > + .mode_off[0] = IOMUXC_GPR12, > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > }, > [IMX6SX] = { > .variant = IMX6SX, > @@ -1386,6 +1384,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > .clk_names = {"pcie_bus", "pcie", "pcie_phy", "pcie_inbound_axi"}, > .ltssm_off = IOMUXC_GPR12, > .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, > + .mode_off[0] = IOMUXC_GPR12, > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > }, > [IMX6QP] = { > .variant = IMX6QP, > @@ -1397,6 +1397,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > .clk_names = {"pcie_bus", "pcie", "pcie_phy"}, > .ltssm_off = IOMUXC_GPR12, > .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, > + .mode_off[0] = IOMUXC_GPR12, > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > }, > [IMX7D] = { > .variant = IMX7D, > @@ -1405,6 +1407,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > IMX6_PCIE_FLAG_HAS_PHY_RESET, > .gpr = "fsl,imx7d-iomuxc-gpr", > .clk_names = {"pcie_bus", "pcie", "pcie_phy"}, > + .mode_off[0] = IOMUXC_GPR12, > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > }, > [IMX8MQ] = { > .variant = IMX8MQ, > @@ -1412,6 +1416,10 @@ static const struct imx6_pcie_drvdata drvdata[] = { > IMX6_PCIE_FLAG_HAS_PHY_RESET, > .gpr = "fsl,imx8mq-iomuxc-gpr", > .clk_names = {"pcie_bus", "pcie", "pcie_phy", "pcie_aux"}, > + .mode_off[0] = IOMUXC_GPR12, > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > + .mode_off[1] = IOMUXC_GPR12, > + .mode_mask[1] = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, Is the mode_mask differ between SoCs or fixed based on instances? I mean, if there is a guarantee that it is going to be IMX6Q_GPR12_DEVICE_TYPE for instance 1 and IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE for instance 2 etc... Then we can avoid these SoC specific config and simplify the code further. - Mani > }, > [IMX8MM] = { > .variant = IMX8MM, > @@ -1420,6 +1428,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > IMX6_PCIE_FLAG_HAS_APP_RESET, > .gpr = "fsl,imx8mm-iomuxc-gpr", > .clk_names = {"pcie_bus", "pcie", "pcie_aux"}, > + .mode_off[0] = IOMUXC_GPR12, > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > }, > [IMX8MP] = { > .variant = IMX8MP, > @@ -1428,6 +1438,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > IMX6_PCIE_FLAG_HAS_APP_RESET, > .gpr = "fsl,imx8mp-iomuxc-gpr", > .clk_names = {"pcie_bus", "pcie", "pcie_aux"}, > + .mode_off[0] = IOMUXC_GPR12, > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > }, > [IMX8MQ_EP] = { > .variant = IMX8MQ_EP, > @@ -1436,6 +1448,10 @@ static const struct imx6_pcie_drvdata drvdata[] = { > .mode = DW_PCIE_EP_TYPE, > .gpr = "fsl,imx8mq-iomuxc-gpr", > .clk_names = {"pcie_bus", "pcie", "pcie_phy", "pcie_aux"}, > + .mode_off[0] = IOMUXC_GPR12, > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > + .mode_off[1] = IOMUXC_GPR12, > + .mode_mask[1] = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, > }, > [IMX8MM_EP] = { > .variant = IMX8MM_EP, > @@ -1443,6 +1459,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > .mode = DW_PCIE_EP_TYPE, > .gpr = "fsl,imx8mm-iomuxc-gpr", > .clk_names = {"pcie_bus", "pcie", "pcie_aux"}, > + .mode_off[0] = IOMUXC_GPR12, > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > }, > [IMX8MP_EP] = { > .variant = IMX8MP_EP, > @@ -1450,6 +1468,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > .mode = DW_PCIE_EP_TYPE, > .gpr = "fsl,imx8mp-iomuxc-gpr", > .clk_names = {"pcie_bus", "pcie", "pcie_aux"}, > + .mode_off[0] = IOMUXC_GPR12, > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > }, > }; > > -- > 2.34.1 >
On Sun, Jan 07, 2024 at 10:46:55AM +0530, Manivannan Sadhasivam wrote: > On Wed, Dec 27, 2023 at 01:27:18PM -0500, Frank Li wrote: > > Add drvdata::mode_off and drvdata::mode_mask to simple > > simplify > > > imx6_pcie_configure_type() logic. > > > > Signed-off-by: Frank Li <Frank.Li@nxp.com> > > Couple of comments below. > > > --- > > > > Notes: > > Change from v2 to v3 > > - none > > Change from v1 to v2 > > - use ffs() to fixe build error. > > > > drivers/pci/controller/dwc/pci-imx6.c | 60 ++++++++++++++++++--------- > > 1 file changed, 40 insertions(+), 20 deletions(-) > > > > diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c > > index 588bfb616260e..717e8fa030deb 100644 > > --- a/drivers/pci/controller/dwc/pci-imx6.c > > +++ b/drivers/pci/controller/dwc/pci-imx6.c > > @@ -68,6 +68,7 @@ enum imx6_pcie_variants { > > > > #define IMX6_PCIE_MAX_CLKS 6 > > > > +#define IMX6_PCIE_MAX_INSTANCES 2 > > struct imx6_pcie_drvdata { > > enum imx6_pcie_variants variant; > > enum dw_pcie_device_mode mode; > > @@ -77,6 +78,8 @@ struct imx6_pcie_drvdata { > > const char *clk_names[IMX6_PCIE_MAX_CLKS]; > > const u32 ltssm_off; > > const u32 ltssm_mask; > > + const u32 mode_off[IMX6_PCIE_MAX_INSTANCES]; > > + const u32 mode_mask[IMX6_PCIE_MAX_INSTANCES]; > > }; > > > > struct imx6_pcie { > > @@ -174,32 +177,25 @@ static unsigned int imx6_pcie_grp_offset(const struct imx6_pcie *imx6_pcie) > > > > static void imx6_pcie_configure_type(struct imx6_pcie *imx6_pcie) > > { > > - unsigned int mask, val, mode; > > + const struct imx6_pcie_drvdata *drvdata = imx6_pcie->drvdata; > > + unsigned int mask, val, mode, id; > > > > - if (imx6_pcie->drvdata->mode == DW_PCIE_EP_TYPE) > > + if (drvdata->mode == DW_PCIE_EP_TYPE) > > mode = PCI_EXP_TYPE_ENDPOINT; > > else > > mode = PCI_EXP_TYPE_ROOT_PORT; > > > > - switch (imx6_pcie->drvdata->variant) { > > - case IMX8MQ: > > - case IMX8MQ_EP: > > - if (imx6_pcie->controller_id == 1) { > > - mask = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE; > > - val = FIELD_PREP(IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, > > - mode); > > - } else { > > - mask = IMX6Q_GPR12_DEVICE_TYPE; > > - val = FIELD_PREP(IMX6Q_GPR12_DEVICE_TYPE, mode); > > - } > > - break; > > - default: > > - mask = IMX6Q_GPR12_DEVICE_TYPE; > > - val = FIELD_PREP(IMX6Q_GPR12_DEVICE_TYPE, mode); > > - break; > > - } > > + id = imx6_pcie->controller_id; > > + > > + /* If mode_mask[id] is zero, means each controller have its individual gpr */ > > + if (!drvdata->mode_mask[id]) > > + id = 0; > > + > > + mask = drvdata->mode_mask[id]; > > + /* FIELD_PREP mask have been constant */ > > No need of this comment. > > > + val = mode << (ffs(mask) - 1); > > > > - regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, mask, val); > > + regmap_update_bits(imx6_pcie->iomuxc_gpr, drvdata->mode_off[id], mask, val); > > } > > > > static int pcie_phy_poll_ack(struct imx6_pcie *imx6_pcie, bool exp_val) > > @@ -1376,6 +1372,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > > .clk_names = {"pcie_bus", "pcie", "pcie_phy"}, > > .ltssm_off = IOMUXC_GPR12, > > .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, > > + .mode_off[0] = IOMUXC_GPR12, > > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > > }, > > [IMX6SX] = { > > .variant = IMX6SX, > > @@ -1386,6 +1384,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > > .clk_names = {"pcie_bus", "pcie", "pcie_phy", "pcie_inbound_axi"}, > > .ltssm_off = IOMUXC_GPR12, > > .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, > > + .mode_off[0] = IOMUXC_GPR12, > > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > > }, > > [IMX6QP] = { > > .variant = IMX6QP, > > @@ -1397,6 +1397,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > > .clk_names = {"pcie_bus", "pcie", "pcie_phy"}, > > .ltssm_off = IOMUXC_GPR12, > > .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, > > + .mode_off[0] = IOMUXC_GPR12, > > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > > }, > > [IMX7D] = { > > .variant = IMX7D, > > @@ -1405,6 +1407,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > > IMX6_PCIE_FLAG_HAS_PHY_RESET, > > .gpr = "fsl,imx7d-iomuxc-gpr", > > .clk_names = {"pcie_bus", "pcie", "pcie_phy"}, > > + .mode_off[0] = IOMUXC_GPR12, > > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > > }, > > [IMX8MQ] = { > > .variant = IMX8MQ, > > @@ -1412,6 +1416,10 @@ static const struct imx6_pcie_drvdata drvdata[] = { > > IMX6_PCIE_FLAG_HAS_PHY_RESET, > > .gpr = "fsl,imx8mq-iomuxc-gpr", > > .clk_names = {"pcie_bus", "pcie", "pcie_phy", "pcie_aux"}, > > + .mode_off[0] = IOMUXC_GPR12, > > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > > + .mode_off[1] = IOMUXC_GPR12, > > + .mode_mask[1] = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, > > Is the mode_mask differ between SoCs or fixed based on instances? I mean, if > there is a guarantee that it is going to be IMX6Q_GPR12_DEVICE_TYPE for instance > 1 and IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE for instance 2 etc... > > Then we can avoid these SoC specific config and simplify the code further. No, iMX95 will change it. Frank > > - Mani > > > }, > > [IMX8MM] = { > > .variant = IMX8MM, > > @@ -1420,6 +1428,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > > IMX6_PCIE_FLAG_HAS_APP_RESET, > > .gpr = "fsl,imx8mm-iomuxc-gpr", > > .clk_names = {"pcie_bus", "pcie", "pcie_aux"}, > > + .mode_off[0] = IOMUXC_GPR12, > > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > > }, > > [IMX8MP] = { > > .variant = IMX8MP, > > @@ -1428,6 +1438,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > > IMX6_PCIE_FLAG_HAS_APP_RESET, > > .gpr = "fsl,imx8mp-iomuxc-gpr", > > .clk_names = {"pcie_bus", "pcie", "pcie_aux"}, > > + .mode_off[0] = IOMUXC_GPR12, > > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > > }, > > [IMX8MQ_EP] = { > > .variant = IMX8MQ_EP, > > @@ -1436,6 +1448,10 @@ static const struct imx6_pcie_drvdata drvdata[] = { > > .mode = DW_PCIE_EP_TYPE, > > .gpr = "fsl,imx8mq-iomuxc-gpr", > > .clk_names = {"pcie_bus", "pcie", "pcie_phy", "pcie_aux"}, > > + .mode_off[0] = IOMUXC_GPR12, > > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > > + .mode_off[1] = IOMUXC_GPR12, > > + .mode_mask[1] = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, > > }, > > [IMX8MM_EP] = { > > .variant = IMX8MM_EP, > > @@ -1443,6 +1459,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > > .mode = DW_PCIE_EP_TYPE, > > .gpr = "fsl,imx8mm-iomuxc-gpr", > > .clk_names = {"pcie_bus", "pcie", "pcie_aux"}, > > + .mode_off[0] = IOMUXC_GPR12, > > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > > }, > > [IMX8MP_EP] = { > > .variant = IMX8MP_EP, > > @@ -1450,6 +1468,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > > .mode = DW_PCIE_EP_TYPE, > > .gpr = "fsl,imx8mp-iomuxc-gpr", > > .clk_names = {"pcie_bus", "pcie", "pcie_aux"}, > > + .mode_off[0] = IOMUXC_GPR12, > > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > > }, > > }; > > > > -- > > 2.34.1 > > > > -- > மணிவண்ணன் சதாசிவம்
On Sun, Jan 07, 2024 at 12:32:14AM -0500, Frank Li wrote: > On Sun, Jan 07, 2024 at 10:46:55AM +0530, Manivannan Sadhasivam wrote: > > On Wed, Dec 27, 2023 at 01:27:18PM -0500, Frank Li wrote: > > > Add drvdata::mode_off and drvdata::mode_mask to simple > > > > simplify > > > > > imx6_pcie_configure_type() logic. > > > > > > Signed-off-by: Frank Li <Frank.Li@nxp.com> > > > > Couple of comments below. > > > > > --- > > > > > > Notes: > > > Change from v2 to v3 > > > - none > > > Change from v1 to v2 > > > - use ffs() to fixe build error. > > > > > > drivers/pci/controller/dwc/pci-imx6.c | 60 ++++++++++++++++++--------- > > > 1 file changed, 40 insertions(+), 20 deletions(-) > > > > > > diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c > > > index 588bfb616260e..717e8fa030deb 100644 > > > --- a/drivers/pci/controller/dwc/pci-imx6.c > > > +++ b/drivers/pci/controller/dwc/pci-imx6.c > > > @@ -68,6 +68,7 @@ enum imx6_pcie_variants { > > > > > > #define IMX6_PCIE_MAX_CLKS 6 > > > > > > +#define IMX6_PCIE_MAX_INSTANCES 2 > > > struct imx6_pcie_drvdata { > > > enum imx6_pcie_variants variant; > > > enum dw_pcie_device_mode mode; > > > @@ -77,6 +78,8 @@ struct imx6_pcie_drvdata { > > > const char *clk_names[IMX6_PCIE_MAX_CLKS]; > > > const u32 ltssm_off; > > > const u32 ltssm_mask; > > > + const u32 mode_off[IMX6_PCIE_MAX_INSTANCES]; > > > + const u32 mode_mask[IMX6_PCIE_MAX_INSTANCES]; > > > }; > > > > > > struct imx6_pcie { > > > @@ -174,32 +177,25 @@ static unsigned int imx6_pcie_grp_offset(const struct imx6_pcie *imx6_pcie) > > > > > > static void imx6_pcie_configure_type(struct imx6_pcie *imx6_pcie) > > > { > > > - unsigned int mask, val, mode; > > > + const struct imx6_pcie_drvdata *drvdata = imx6_pcie->drvdata; > > > + unsigned int mask, val, mode, id; > > > > > > - if (imx6_pcie->drvdata->mode == DW_PCIE_EP_TYPE) > > > + if (drvdata->mode == DW_PCIE_EP_TYPE) > > > mode = PCI_EXP_TYPE_ENDPOINT; > > > else > > > mode = PCI_EXP_TYPE_ROOT_PORT; > > > > > > - switch (imx6_pcie->drvdata->variant) { > > > - case IMX8MQ: > > > - case IMX8MQ_EP: > > > - if (imx6_pcie->controller_id == 1) { > > > - mask = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE; > > > - val = FIELD_PREP(IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, > > > - mode); > > > - } else { > > > - mask = IMX6Q_GPR12_DEVICE_TYPE; > > > - val = FIELD_PREP(IMX6Q_GPR12_DEVICE_TYPE, mode); > > > - } > > > - break; > > > - default: > > > - mask = IMX6Q_GPR12_DEVICE_TYPE; > > > - val = FIELD_PREP(IMX6Q_GPR12_DEVICE_TYPE, mode); > > > - break; > > > - } > > > + id = imx6_pcie->controller_id; > > > + > > > + /* If mode_mask[id] is zero, means each controller have its individual gpr */ > > > + if (!drvdata->mode_mask[id]) > > > + id = 0; > > > + > > > + mask = drvdata->mode_mask[id]; > > > + /* FIELD_PREP mask have been constant */ > > > > No need of this comment. > > > > > + val = mode << (ffs(mask) - 1); > > > > > > - regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, mask, val); > > > + regmap_update_bits(imx6_pcie->iomuxc_gpr, drvdata->mode_off[id], mask, val); > > > } > > > > > > static int pcie_phy_poll_ack(struct imx6_pcie *imx6_pcie, bool exp_val) > > > @@ -1376,6 +1372,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > > > .clk_names = {"pcie_bus", "pcie", "pcie_phy"}, > > > .ltssm_off = IOMUXC_GPR12, > > > .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, > > > + .mode_off[0] = IOMUXC_GPR12, > > > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > > > }, > > > [IMX6SX] = { > > > .variant = IMX6SX, > > > @@ -1386,6 +1384,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > > > .clk_names = {"pcie_bus", "pcie", "pcie_phy", "pcie_inbound_axi"}, > > > .ltssm_off = IOMUXC_GPR12, > > > .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, > > > + .mode_off[0] = IOMUXC_GPR12, > > > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > > > }, > > > [IMX6QP] = { > > > .variant = IMX6QP, > > > @@ -1397,6 +1397,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > > > .clk_names = {"pcie_bus", "pcie", "pcie_phy"}, > > > .ltssm_off = IOMUXC_GPR12, > > > .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, > > > + .mode_off[0] = IOMUXC_GPR12, > > > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > > > }, > > > [IMX7D] = { > > > .variant = IMX7D, > > > @@ -1405,6 +1407,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > > > IMX6_PCIE_FLAG_HAS_PHY_RESET, > > > .gpr = "fsl,imx7d-iomuxc-gpr", > > > .clk_names = {"pcie_bus", "pcie", "pcie_phy"}, > > > + .mode_off[0] = IOMUXC_GPR12, > > > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > > > }, > > > [IMX8MQ] = { > > > .variant = IMX8MQ, > > > @@ -1412,6 +1416,10 @@ static const struct imx6_pcie_drvdata drvdata[] = { > > > IMX6_PCIE_FLAG_HAS_PHY_RESET, > > > .gpr = "fsl,imx8mq-iomuxc-gpr", > > > .clk_names = {"pcie_bus", "pcie", "pcie_phy", "pcie_aux"}, > > > + .mode_off[0] = IOMUXC_GPR12, > > > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > > > + .mode_off[1] = IOMUXC_GPR12, > > > + .mode_mask[1] = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, > > > > Is the mode_mask differ between SoCs or fixed based on instances? I mean, if > > there is a guarantee that it is going to be IMX6Q_GPR12_DEVICE_TYPE for instance > > 1 and IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE for instance 2 etc... > > > > Then we can avoid these SoC specific config and simplify the code further. > > No, iMX95 will change it. > Ok, fine then. - Mani > Frank > > > > > - Mani > > > > > }, > > > [IMX8MM] = { > > > .variant = IMX8MM, > > > @@ -1420,6 +1428,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > > > IMX6_PCIE_FLAG_HAS_APP_RESET, > > > .gpr = "fsl,imx8mm-iomuxc-gpr", > > > .clk_names = {"pcie_bus", "pcie", "pcie_aux"}, > > > + .mode_off[0] = IOMUXC_GPR12, > > > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > > > }, > > > [IMX8MP] = { > > > .variant = IMX8MP, > > > @@ -1428,6 +1438,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > > > IMX6_PCIE_FLAG_HAS_APP_RESET, > > > .gpr = "fsl,imx8mp-iomuxc-gpr", > > > .clk_names = {"pcie_bus", "pcie", "pcie_aux"}, > > > + .mode_off[0] = IOMUXC_GPR12, > > > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > > > }, > > > [IMX8MQ_EP] = { > > > .variant = IMX8MQ_EP, > > > @@ -1436,6 +1448,10 @@ static const struct imx6_pcie_drvdata drvdata[] = { > > > .mode = DW_PCIE_EP_TYPE, > > > .gpr = "fsl,imx8mq-iomuxc-gpr", > > > .clk_names = {"pcie_bus", "pcie", "pcie_phy", "pcie_aux"}, > > > + .mode_off[0] = IOMUXC_GPR12, > > > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > > > + .mode_off[1] = IOMUXC_GPR12, > > > + .mode_mask[1] = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, > > > }, > > > [IMX8MM_EP] = { > > > .variant = IMX8MM_EP, > > > @@ -1443,6 +1459,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > > > .mode = DW_PCIE_EP_TYPE, > > > .gpr = "fsl,imx8mm-iomuxc-gpr", > > > .clk_names = {"pcie_bus", "pcie", "pcie_aux"}, > > > + .mode_off[0] = IOMUXC_GPR12, > > > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > > > }, > > > [IMX8MP_EP] = { > > > .variant = IMX8MP_EP, > > > @@ -1450,6 +1468,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { > > > .mode = DW_PCIE_EP_TYPE, > > > .gpr = "fsl,imx8mp-iomuxc-gpr", > > > .clk_names = {"pcie_bus", "pcie", "pcie_aux"}, > > > + .mode_off[0] = IOMUXC_GPR12, > > > + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, > > > }, > > > }; > > > > > > -- > > > 2.34.1 > > > > > > > -- > > மணிவண்ணன் சதாசிவம்
diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 588bfb616260e..717e8fa030deb 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -68,6 +68,7 @@ enum imx6_pcie_variants { #define IMX6_PCIE_MAX_CLKS 6 +#define IMX6_PCIE_MAX_INSTANCES 2 struct imx6_pcie_drvdata { enum imx6_pcie_variants variant; enum dw_pcie_device_mode mode; @@ -77,6 +78,8 @@ struct imx6_pcie_drvdata { const char *clk_names[IMX6_PCIE_MAX_CLKS]; const u32 ltssm_off; const u32 ltssm_mask; + const u32 mode_off[IMX6_PCIE_MAX_INSTANCES]; + const u32 mode_mask[IMX6_PCIE_MAX_INSTANCES]; }; struct imx6_pcie { @@ -174,32 +177,25 @@ static unsigned int imx6_pcie_grp_offset(const struct imx6_pcie *imx6_pcie) static void imx6_pcie_configure_type(struct imx6_pcie *imx6_pcie) { - unsigned int mask, val, mode; + const struct imx6_pcie_drvdata *drvdata = imx6_pcie->drvdata; + unsigned int mask, val, mode, id; - if (imx6_pcie->drvdata->mode == DW_PCIE_EP_TYPE) + if (drvdata->mode == DW_PCIE_EP_TYPE) mode = PCI_EXP_TYPE_ENDPOINT; else mode = PCI_EXP_TYPE_ROOT_PORT; - switch (imx6_pcie->drvdata->variant) { - case IMX8MQ: - case IMX8MQ_EP: - if (imx6_pcie->controller_id == 1) { - mask = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE; - val = FIELD_PREP(IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, - mode); - } else { - mask = IMX6Q_GPR12_DEVICE_TYPE; - val = FIELD_PREP(IMX6Q_GPR12_DEVICE_TYPE, mode); - } - break; - default: - mask = IMX6Q_GPR12_DEVICE_TYPE; - val = FIELD_PREP(IMX6Q_GPR12_DEVICE_TYPE, mode); - break; - } + id = imx6_pcie->controller_id; + + /* If mode_mask[id] is zero, means each controller have its individual gpr */ + if (!drvdata->mode_mask[id]) + id = 0; + + mask = drvdata->mode_mask[id]; + /* FIELD_PREP mask have been constant */ + val = mode << (ffs(mask) - 1); - regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, mask, val); + regmap_update_bits(imx6_pcie->iomuxc_gpr, drvdata->mode_off[id], mask, val); } static int pcie_phy_poll_ack(struct imx6_pcie *imx6_pcie, bool exp_val) @@ -1376,6 +1372,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .clk_names = {"pcie_bus", "pcie", "pcie_phy"}, .ltssm_off = IOMUXC_GPR12, .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX6SX] = { .variant = IMX6SX, @@ -1386,6 +1384,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .clk_names = {"pcie_bus", "pcie", "pcie_phy", "pcie_inbound_axi"}, .ltssm_off = IOMUXC_GPR12, .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX6QP] = { .variant = IMX6QP, @@ -1397,6 +1397,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .clk_names = {"pcie_bus", "pcie", "pcie_phy"}, .ltssm_off = IOMUXC_GPR12, .ltssm_mask = IMX6Q_GPR12_PCIE_CTL_2, + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX7D] = { .variant = IMX7D, @@ -1405,6 +1407,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { IMX6_PCIE_FLAG_HAS_PHY_RESET, .gpr = "fsl,imx7d-iomuxc-gpr", .clk_names = {"pcie_bus", "pcie", "pcie_phy"}, + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX8MQ] = { .variant = IMX8MQ, @@ -1412,6 +1416,10 @@ static const struct imx6_pcie_drvdata drvdata[] = { IMX6_PCIE_FLAG_HAS_PHY_RESET, .gpr = "fsl,imx8mq-iomuxc-gpr", .clk_names = {"pcie_bus", "pcie", "pcie_phy", "pcie_aux"}, + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, + .mode_off[1] = IOMUXC_GPR12, + .mode_mask[1] = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, }, [IMX8MM] = { .variant = IMX8MM, @@ -1420,6 +1428,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { IMX6_PCIE_FLAG_HAS_APP_RESET, .gpr = "fsl,imx8mm-iomuxc-gpr", .clk_names = {"pcie_bus", "pcie", "pcie_aux"}, + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX8MP] = { .variant = IMX8MP, @@ -1428,6 +1438,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { IMX6_PCIE_FLAG_HAS_APP_RESET, .gpr = "fsl,imx8mp-iomuxc-gpr", .clk_names = {"pcie_bus", "pcie", "pcie_aux"}, + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX8MQ_EP] = { .variant = IMX8MQ_EP, @@ -1436,6 +1448,10 @@ static const struct imx6_pcie_drvdata drvdata[] = { .mode = DW_PCIE_EP_TYPE, .gpr = "fsl,imx8mq-iomuxc-gpr", .clk_names = {"pcie_bus", "pcie", "pcie_phy", "pcie_aux"}, + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, + .mode_off[1] = IOMUXC_GPR12, + .mode_mask[1] = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, }, [IMX8MM_EP] = { .variant = IMX8MM_EP, @@ -1443,6 +1459,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .mode = DW_PCIE_EP_TYPE, .gpr = "fsl,imx8mm-iomuxc-gpr", .clk_names = {"pcie_bus", "pcie", "pcie_aux"}, + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, [IMX8MP_EP] = { .variant = IMX8MP_EP, @@ -1450,6 +1468,8 @@ static const struct imx6_pcie_drvdata drvdata[] = { .mode = DW_PCIE_EP_TYPE, .gpr = "fsl,imx8mp-iomuxc-gpr", .clk_names = {"pcie_bus", "pcie", "pcie_aux"}, + .mode_off[0] = IOMUXC_GPR12, + .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, }, };
Add drvdata::mode_off and drvdata::mode_mask to simple imx6_pcie_configure_type() logic. Signed-off-by: Frank Li <Frank.Li@nxp.com> --- Notes: Change from v2 to v3 - none Change from v1 to v2 - use ffs() to fixe build error. drivers/pci/controller/dwc/pci-imx6.c | 60 ++++++++++++++++++--------- 1 file changed, 40 insertions(+), 20 deletions(-)