| Message ID | 1526995626-9333-1-git-send-email-adouglas@cadence.com |
|---|---|
| State | Superseded |
| Delegated to: | Lorenzo Pieralisi |
| Headers | show |
| Series | PCI: cadence: Host and EP driver updates for PHY and power management | expand |
Hi, On Tuesday 22 May 2018 06:57 PM, Alan Douglas wrote: > If PHYs are present, they will be initialized and enabled in driver probe, > and disabled in driver shutdown. > > Signed-off-by: Alan Douglas <adouglas@cadence.com> > --- > drivers/pci/cadence/pcie-cadence-ep.c | 14 ++++- > drivers/pci/cadence/pcie-cadence-host.c | 31 +++++++++++ > drivers/pci/cadence/pcie-cadence.c | 93 +++++++++++++++++++++++++++++++++ > drivers/pci/cadence/pcie-cadence.h | 7 +++ > 4 files changed, 144 insertions(+), 1 deletion(-) > > diff --git a/drivers/pci/cadence/pcie-cadence-ep.c b/drivers/pci/cadence/pcie-cadence-ep.c > index 3d8283e..2581caf 100644 > --- a/drivers/pci/cadence/pcie-cadence-ep.c > +++ b/drivers/pci/cadence/pcie-cadence-ep.c > @@ -439,6 +439,7 @@ static int cdns_pcie_ep_probe(struct platform_device *pdev) > struct pci_epc *epc; > struct resource *res; > int ret; > + int phy_count; > > ep = devm_kzalloc(dev, sizeof(*ep), GFP_KERNEL); > if (!ep) > @@ -472,6 +473,12 @@ static int cdns_pcie_ep_probe(struct platform_device *pdev) > if (!ep->ob_addr) > return -ENOMEM; > > + ret = cdns_pcie_init_phy(dev, pcie); > + if (ret) { > + dev_err(dev, "failed to init phy\n"); > + return ret; > + } > + platform_set_drvdata(pdev, pcie); > pm_runtime_enable(dev); > ret = pm_runtime_get_sync(dev); > if (ret < 0) { > @@ -520,6 +527,10 @@ static int cdns_pcie_ep_probe(struct platform_device *pdev) > > err_get_sync: > pm_runtime_disable(dev); > + cdns_pcie_disable_phy(pcie); > + phy_count = pcie->phy_count; > + while (phy_count--) > + device_link_del(pcie->link[phy_count]); > > return ret; > } > @@ -527,6 +538,7 @@ static int cdns_pcie_ep_probe(struct platform_device *pdev) > static void cdns_pcie_ep_shutdown(struct platform_device *pdev) > { > struct device *dev = &pdev->dev; > + struct cdns_pcie *pcie = dev_get_drvdata(dev); > int ret; > > ret = pm_runtime_put_sync(dev); > @@ -535,7 +547,7 @@ static void cdns_pcie_ep_shutdown(struct platform_device *pdev) > > pm_runtime_disable(dev); > > - /* The PCIe controller can't be disabled. */ > + cdns_pcie_disable_phy(pcie); > } > > static struct platform_driver cdns_pcie_ep_driver = { > diff --git a/drivers/pci/cadence/pcie-cadence-host.c b/drivers/pci/cadence/pcie-cadence-host.c > index a4ebbd3..7536926a 100644 > --- a/drivers/pci/cadence/pcie-cadence-host.c > +++ b/drivers/pci/cadence/pcie-cadence-host.c > @@ -58,6 +58,9 @@ static void __iomem *cdns_pci_map_bus(struct pci_bus *bus, unsigned int devfn, > > return pcie->reg_base + (where & 0xfff); > } > + /* Check that the link is up */ > + if (!(cdns_pcie_readl(pcie, CDNS_PCIE_LM_BASE) & 0x1)) > + return NULL; > > /* Update Output registers for AXI region 0. */ > addr0 = CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_NBITS(12) | > @@ -239,6 +242,7 @@ static int cdns_pcie_host_probe(struct platform_device *pdev) > struct cdns_pcie *pcie; > struct resource *res; > int ret; > + int phy_count; > > bridge = devm_pci_alloc_host_bridge(dev, sizeof(*rc)); > if (!bridge) > @@ -290,6 +294,13 @@ static int cdns_pcie_host_probe(struct platform_device *pdev) > } > pcie->mem_res = res; > > + ret = cdns_pcie_init_phy(dev, pcie); > + if (ret) { > + dev_err(dev, "failed to init phy\n"); > + return ret; > + } > + platform_set_drvdata(pdev, pcie); > + > pm_runtime_enable(dev); > ret = pm_runtime_get_sync(dev); > if (ret < 0) { > @@ -322,15 +333,35 @@ static int cdns_pcie_host_probe(struct platform_device *pdev) > > err_get_sync: > pm_runtime_disable(dev); > + cdns_pcie_disable_phy(pcie); > + phy_count = pcie->phy_count; > + while (phy_count--) > + device_link_del(pcie->link[phy_count]); > > return ret; > } > > +static void cdns_pcie_shutdown(struct platform_device *pdev) > +{ > + struct device *dev = &pdev->dev; > + struct cdns_pcie *pcie = dev_get_drvdata(dev); > + int ret; > + > + ret = pm_runtime_put_sync(dev); > + if (ret < 0) > + dev_dbg(dev, "pm_runtime_put_sync failed\n"); > + > + pm_runtime_disable(dev); > + cdns_pcie_disable_phy(pcie); > +} shutdown callback can be added in a separate patch. > + > + spurious blank line. > static struct platform_driver cdns_pcie_host_driver = { > .driver = { > .name = "cdns-pcie-host", > .of_match_table = cdns_pcie_host_of_match, > }, > .probe = cdns_pcie_host_probe, > + .shutdown = cdns_pcie_shutdown, > }; > builtin_platform_driver(cdns_pcie_host_driver); > diff --git a/drivers/pci/cadence/pcie-cadence.c b/drivers/pci/cadence/pcie-cadence.c > index 138d113..681609a 100644 > --- a/drivers/pci/cadence/pcie-cadence.c > +++ b/drivers/pci/cadence/pcie-cadence.c > @@ -124,3 +124,96 @@ void cdns_pcie_reset_outbound_region(struct cdns_pcie *pcie, u32 r) > cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_CPU_ADDR0(r), 0); > cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_CPU_ADDR1(r), 0); > } > + > +void cdns_pcie_disable_phy(struct cdns_pcie *pcie) > +{ > + int i = pcie->phy_count; > + > + while (i--) { > + phy_power_off(pcie->phy[i]); > + phy_exit(pcie->phy[i]); > + } > +} > + > +int cdns_pcie_enable_phy(struct cdns_pcie *pcie) > +{ > + int ret; > + int i; > + > + for (i = 0; i < pcie->phy_count; i++) { > + ret = phy_init(pcie->phy[i]); > + if (ret < 0) > + goto err_phy; > + > + ret = phy_power_on(pcie->phy[i]); > + if (ret < 0) { > + phy_exit(pcie->phy[i]); > + goto err_phy; > + } > + } > + > + return 0; > + > +err_phy: > + while (--i >= 0) { > + phy_power_off(pcie->phy[i]); > + phy_exit(pcie->phy[i]); > + } > + > + return ret; > +} > + > +int cdns_pcie_init_phy(struct device *dev, struct cdns_pcie *pcie) > +{ > + struct device_node *np = dev->of_node; > + int phy_count; > + struct phy **phy; > + struct device_link **link; > + int i; > + int ret; > + const char *name; > + > + phy_count = of_property_count_strings(np, "phy-names"); It's preferable to have num-lanes property, which can be used to configure the number of lanes supported in a platform even if it doesn't populate PHYs property. > + if (phy_count < 1) { > + dev_err(dev, "no phy-names. PHY will not be initialized\n"); > + pcie->phy_count = 0; > + return 0; > + } > + > + phy = devm_kzalloc(dev, sizeof(*phy) * phy_count, GFP_KERNEL); > + if (!phy) > + return -ENOMEM; > + > + link = devm_kzalloc(dev, sizeof(*link) * phy_count, GFP_KERNEL); > + if (!link) > + return -ENOMEM; > + > + for (i = 0; i < phy_count; i++) { > + of_property_read_string_index(np, "phy-names", i, &name); > + phy[i] = devm_phy_get(dev, name); For optional PHYs, devm_phy_optional_get() should be used. Thanks Kishon
On 31 May 2018 14:26, Kishon Vijay Abraham I wrote: > On Tuesday 22 May 2018 06:57 PM, Alan Douglas wrote: > > If PHYs are present, they will be initialized and enabled in driver probe, > > and disabled in driver shutdown. > > > > Signed-off-by: Alan Douglas <adouglas@cadence.com> > > --- > > drivers/pci/cadence/pcie-cadence-ep.c | 14 ++++- > > drivers/pci/cadence/pcie-cadence-host.c | 31 +++++++++++ > > drivers/pci/cadence/pcie-cadence.c | 93 +++++++++++++++++++++++++++++++++ > > drivers/pci/cadence/pcie-cadence.h | 7 +++ > > 4 files changed, 144 insertions(+), 1 deletion(-) > > > > diff --git a/drivers/pci/cadence/pcie-cadence-ep.c b/drivers/pci/cadence/pcie-cadence-ep.c > > index 3d8283e..2581caf 100644 > > --- a/drivers/pci/cadence/pcie-cadence-ep.c > > +++ b/drivers/pci/cadence/pcie-cadence-ep.c > > @@ -439,6 +439,7 @@ static int cdns_pcie_ep_probe(struct platform_device *pdev) > > struct pci_epc *epc; > > struct resource *res; > > int ret; > > + int phy_count; > > > > ep = devm_kzalloc(dev, sizeof(*ep), GFP_KERNEL); > > if (!ep) > > @@ -472,6 +473,12 @@ static int cdns_pcie_ep_probe(struct platform_device *pdev) > > if (!ep->ob_addr) > > return -ENOMEM; > > > > + ret = cdns_pcie_init_phy(dev, pcie); > > + if (ret) { > > + dev_err(dev, "failed to init phy\n"); > > + return ret; > > + } > > + platform_set_drvdata(pdev, pcie); > > pm_runtime_enable(dev); > > ret = pm_runtime_get_sync(dev); > > if (ret < 0) { > > @@ -520,6 +527,10 @@ static int cdns_pcie_ep_probe(struct platform_device *pdev) > > > > err_get_sync: > > pm_runtime_disable(dev); > > + cdns_pcie_disable_phy(pcie); > > + phy_count = pcie->phy_count; > > + while (phy_count--) > > + device_link_del(pcie->link[phy_count]); > > > > return ret; > > } > > @@ -527,6 +538,7 @@ static int cdns_pcie_ep_probe(struct platform_device *pdev) > > static void cdns_pcie_ep_shutdown(struct platform_device *pdev) > > { > > struct device *dev = &pdev->dev; > > + struct cdns_pcie *pcie = dev_get_drvdata(dev); > > int ret; > > > > ret = pm_runtime_put_sync(dev); > > @@ -535,7 +547,7 @@ static void cdns_pcie_ep_shutdown(struct platform_device *pdev) > > > > pm_runtime_disable(dev); > > > > - /* The PCIe controller can't be disabled. */ > > + cdns_pcie_disable_phy(pcie); > > } > > > > static struct platform_driver cdns_pcie_ep_driver = { > > diff --git a/drivers/pci/cadence/pcie-cadence-host.c b/drivers/pci/cadence/pcie-cadence-host.c > > index a4ebbd3..7536926a 100644 > > --- a/drivers/pci/cadence/pcie-cadence-host.c > > +++ b/drivers/pci/cadence/pcie-cadence-host.c > > @@ -58,6 +58,9 @@ static void __iomem *cdns_pci_map_bus(struct pci_bus *bus, unsigned int devfn, > > > > return pcie->reg_base + (where & 0xfff); > > } > > + /* Check that the link is up */ > > + if (!(cdns_pcie_readl(pcie, CDNS_PCIE_LM_BASE) & 0x1)) > > + return NULL; > > > > /* Update Output registers for AXI region 0. */ > > addr0 = CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_NBITS(12) | > > @@ -239,6 +242,7 @@ static int cdns_pcie_host_probe(struct platform_device *pdev) > > struct cdns_pcie *pcie; > > struct resource *res; > > int ret; > > + int phy_count; > > > > bridge = devm_pci_alloc_host_bridge(dev, sizeof(*rc)); > > if (!bridge) > > @@ -290,6 +294,13 @@ static int cdns_pcie_host_probe(struct platform_device *pdev) > > } > > pcie->mem_res = res; > > > > + ret = cdns_pcie_init_phy(dev, pcie); > > + if (ret) { > > + dev_err(dev, "failed to init phy\n"); > > + return ret; > > + } > > + platform_set_drvdata(pdev, pcie); > > + > > pm_runtime_enable(dev); > > ret = pm_runtime_get_sync(dev); > > if (ret < 0) { > > @@ -322,15 +333,35 @@ static int cdns_pcie_host_probe(struct platform_device *pdev) > > > > err_get_sync: > > pm_runtime_disable(dev); > > + cdns_pcie_disable_phy(pcie); > > + phy_count = pcie->phy_count; > > + while (phy_count--) > > + device_link_del(pcie->link[phy_count]); > > > > return ret; > > } > > > > +static void cdns_pcie_shutdown(struct platform_device *pdev) > > +{ > > + struct device *dev = &pdev->dev; > > + struct cdns_pcie *pcie = dev_get_drvdata(dev); > > + int ret; > > + > > + ret = pm_runtime_put_sync(dev); > > + if (ret < 0) > > + dev_dbg(dev, "pm_runtime_put_sync failed\n"); > > + > > + pm_runtime_disable(dev); > > + cdns_pcie_disable_phy(pcie); > > +} > > shutdown callback can be added in a separate patch. > Will move to a separate patch in v3 > > + > > + > spurious blank line. Will remove in v3 > > static struct platform_driver cdns_pcie_host_driver = { > > .driver = { > > .name = "cdns-pcie-host", > > .of_match_table = cdns_pcie_host_of_match, > > }, > > .probe = cdns_pcie_host_probe, > > + .shutdown = cdns_pcie_shutdown, > > }; > > builtin_platform_driver(cdns_pcie_host_driver); > > diff --git a/drivers/pci/cadence/pcie-cadence.c b/drivers/pci/cadence/pcie-cadence.c > > index 138d113..681609a 100644 > > --- a/drivers/pci/cadence/pcie-cadence.c > > +++ b/drivers/pci/cadence/pcie-cadence.c > > @@ -124,3 +124,96 @@ void cdns_pcie_reset_outbound_region(struct cdns_pcie *pcie, u32 r) > > cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_CPU_ADDR0(r), 0); > > cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_CPU_ADDR1(r), 0); > > } > > + > > +void cdns_pcie_disable_phy(struct cdns_pcie *pcie) > > +{ > > + int i = pcie->phy_count; > > + > > + while (i--) { > > + phy_power_off(pcie->phy[i]); > > + phy_exit(pcie->phy[i]); > > + } > > +} > > + > > +int cdns_pcie_enable_phy(struct cdns_pcie *pcie) > > +{ > > + int ret; > > + int i; > > + > > + for (i = 0; i < pcie->phy_count; i++) { > > + ret = phy_init(pcie->phy[i]); > > + if (ret < 0) > > + goto err_phy; > > + > > + ret = phy_power_on(pcie->phy[i]); > > + if (ret < 0) { > > + phy_exit(pcie->phy[i]); > > + goto err_phy; > > + } > > + } > > + > > + return 0; > > + > > +err_phy: > > + while (--i >= 0) { > > + phy_power_off(pcie->phy[i]); > > + phy_exit(pcie->phy[i]); > > + } > > + > > + return ret; > > +} > > + > > +int cdns_pcie_init_phy(struct device *dev, struct cdns_pcie *pcie) > > +{ > > + struct device_node *np = dev->of_node; > > + int phy_count; > > + struct phy **phy; > > + struct device_link **link; > > + int i; > > + int ret; > > + const char *name; > > + > > + phy_count = of_property_count_strings(np, "phy-names"); > > It's preferable to have num-lanes property, which can be used to configure the > number of lanes supported in a platform even if it doesn't populate PHYs property. There is no suitable register in the core IP to configure num-lanes, this is configured externally to the IP, and so can be read from an IP register. > > + if (phy_count < 1) { > > + dev_err(dev, "no phy-names. PHY will not be initialized\n"); > > + pcie->phy_count = 0; > > + return 0; > > + } > > + > > + phy = devm_kzalloc(dev, sizeof(*phy) * phy_count, GFP_KERNEL); > > + if (!phy) > > + return -ENOMEM; > > + > > + link = devm_kzalloc(dev, sizeof(*link) * phy_count, GFP_KERNEL); > > + if (!link) > > + return -ENOMEM; > > + > > + for (i = 0; i < phy_count; i++) { > > + of_property_read_string_index(np, "phy-names", i, &name); > > + phy[i] = devm_phy_get(dev, name); > > For optional PHYs, devm_phy_optional_get() should be used. > I'll prepare a v3 using devm_phy_optional_get() Thanks, Alan
diff --git a/drivers/pci/cadence/pcie-cadence-ep.c b/drivers/pci/cadence/pcie-cadence-ep.c index 3d8283e..2581caf 100644 --- a/drivers/pci/cadence/pcie-cadence-ep.c +++ b/drivers/pci/cadence/pcie-cadence-ep.c @@ -439,6 +439,7 @@ static int cdns_pcie_ep_probe(struct platform_device *pdev) struct pci_epc *epc; struct resource *res; int ret; + int phy_count; ep = devm_kzalloc(dev, sizeof(*ep), GFP_KERNEL); if (!ep) @@ -472,6 +473,12 @@ static int cdns_pcie_ep_probe(struct platform_device *pdev) if (!ep->ob_addr) return -ENOMEM; + ret = cdns_pcie_init_phy(dev, pcie); + if (ret) { + dev_err(dev, "failed to init phy\n"); + return ret; + } + platform_set_drvdata(pdev, pcie); pm_runtime_enable(dev); ret = pm_runtime_get_sync(dev); if (ret < 0) { @@ -520,6 +527,10 @@ static int cdns_pcie_ep_probe(struct platform_device *pdev) err_get_sync: pm_runtime_disable(dev); + cdns_pcie_disable_phy(pcie); + phy_count = pcie->phy_count; + while (phy_count--) + device_link_del(pcie->link[phy_count]); return ret; } @@ -527,6 +538,7 @@ static int cdns_pcie_ep_probe(struct platform_device *pdev) static void cdns_pcie_ep_shutdown(struct platform_device *pdev) { struct device *dev = &pdev->dev; + struct cdns_pcie *pcie = dev_get_drvdata(dev); int ret; ret = pm_runtime_put_sync(dev); @@ -535,7 +547,7 @@ static void cdns_pcie_ep_shutdown(struct platform_device *pdev) pm_runtime_disable(dev); - /* The PCIe controller can't be disabled. */ + cdns_pcie_disable_phy(pcie); } static struct platform_driver cdns_pcie_ep_driver = { diff --git a/drivers/pci/cadence/pcie-cadence-host.c b/drivers/pci/cadence/pcie-cadence-host.c index a4ebbd3..7536926a 100644 --- a/drivers/pci/cadence/pcie-cadence-host.c +++ b/drivers/pci/cadence/pcie-cadence-host.c @@ -58,6 +58,9 @@ static void __iomem *cdns_pci_map_bus(struct pci_bus *bus, unsigned int devfn, return pcie->reg_base + (where & 0xfff); } + /* Check that the link is up */ + if (!(cdns_pcie_readl(pcie, CDNS_PCIE_LM_BASE) & 0x1)) + return NULL; /* Update Output registers for AXI region 0. */ addr0 = CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_NBITS(12) | @@ -239,6 +242,7 @@ static int cdns_pcie_host_probe(struct platform_device *pdev) struct cdns_pcie *pcie; struct resource *res; int ret; + int phy_count; bridge = devm_pci_alloc_host_bridge(dev, sizeof(*rc)); if (!bridge) @@ -290,6 +294,13 @@ static int cdns_pcie_host_probe(struct platform_device *pdev) } pcie->mem_res = res; + ret = cdns_pcie_init_phy(dev, pcie); + if (ret) { + dev_err(dev, "failed to init phy\n"); + return ret; + } + platform_set_drvdata(pdev, pcie); + pm_runtime_enable(dev); ret = pm_runtime_get_sync(dev); if (ret < 0) { @@ -322,15 +333,35 @@ static int cdns_pcie_host_probe(struct platform_device *pdev) err_get_sync: pm_runtime_disable(dev); + cdns_pcie_disable_phy(pcie); + phy_count = pcie->phy_count; + while (phy_count--) + device_link_del(pcie->link[phy_count]); return ret; } +static void cdns_pcie_shutdown(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct cdns_pcie *pcie = dev_get_drvdata(dev); + int ret; + + ret = pm_runtime_put_sync(dev); + if (ret < 0) + dev_dbg(dev, "pm_runtime_put_sync failed\n"); + + pm_runtime_disable(dev); + cdns_pcie_disable_phy(pcie); +} + + static struct platform_driver cdns_pcie_host_driver = { .driver = { .name = "cdns-pcie-host", .of_match_table = cdns_pcie_host_of_match, }, .probe = cdns_pcie_host_probe, + .shutdown = cdns_pcie_shutdown, }; builtin_platform_driver(cdns_pcie_host_driver); diff --git a/drivers/pci/cadence/pcie-cadence.c b/drivers/pci/cadence/pcie-cadence.c index 138d113..681609a 100644 --- a/drivers/pci/cadence/pcie-cadence.c +++ b/drivers/pci/cadence/pcie-cadence.c @@ -124,3 +124,96 @@ void cdns_pcie_reset_outbound_region(struct cdns_pcie *pcie, u32 r) cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_CPU_ADDR0(r), 0); cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_CPU_ADDR1(r), 0); } + +void cdns_pcie_disable_phy(struct cdns_pcie *pcie) +{ + int i = pcie->phy_count; + + while (i--) { + phy_power_off(pcie->phy[i]); + phy_exit(pcie->phy[i]); + } +} + +int cdns_pcie_enable_phy(struct cdns_pcie *pcie) +{ + int ret; + int i; + + for (i = 0; i < pcie->phy_count; i++) { + ret = phy_init(pcie->phy[i]); + if (ret < 0) + goto err_phy; + + ret = phy_power_on(pcie->phy[i]); + if (ret < 0) { + phy_exit(pcie->phy[i]); + goto err_phy; + } + } + + return 0; + +err_phy: + while (--i >= 0) { + phy_power_off(pcie->phy[i]); + phy_exit(pcie->phy[i]); + } + + return ret; +} + +int cdns_pcie_init_phy(struct device *dev, struct cdns_pcie *pcie) +{ + struct device_node *np = dev->of_node; + int phy_count; + struct phy **phy; + struct device_link **link; + int i; + int ret; + const char *name; + + phy_count = of_property_count_strings(np, "phy-names"); + if (phy_count < 1) { + dev_err(dev, "no phy-names. PHY will not be initialized\n"); + pcie->phy_count = 0; + return 0; + } + + phy = devm_kzalloc(dev, sizeof(*phy) * phy_count, GFP_KERNEL); + if (!phy) + return -ENOMEM; + + link = devm_kzalloc(dev, sizeof(*link) * phy_count, GFP_KERNEL); + if (!link) + return -ENOMEM; + + for (i = 0; i < phy_count; i++) { + of_property_read_string_index(np, "phy-names", i, &name); + phy[i] = devm_phy_get(dev, name); + if (IS_ERR(phy)) + return PTR_ERR(phy); + + link[i] = device_link_add(dev, &phy[i]->dev, DL_FLAG_STATELESS); + if (!link[i]) { + ret = -EINVAL; + goto err_link; + } + } + + pcie->phy_count = phy_count; + pcie->phy = phy; + pcie->link = link; + + ret = cdns_pcie_enable_phy(pcie); + if (ret) + goto err_link; + + return 0; + +err_link: + while (--i >= 0) + device_link_del(link[i]); + + return ret; +} diff --git a/drivers/pci/cadence/pcie-cadence.h b/drivers/pci/cadence/pcie-cadence.h index ed336cc..b342c80 100644 --- a/drivers/pci/cadence/pcie-cadence.h +++ b/drivers/pci/cadence/pcie-cadence.h @@ -8,6 +8,7 @@ #include <linux/kernel.h> #include <linux/pci.h> +#include <linux/phy/phy.h> /* * Local Management Registers @@ -229,6 +230,9 @@ struct cdns_pcie { struct resource *mem_res; bool is_rc; u8 bus; + int phy_count; + struct phy **phy; + struct device_link **link; }; /* Register access */ @@ -307,5 +311,8 @@ void cdns_pcie_set_outbound_region_for_normal_msg(struct cdns_pcie *pcie, u8 fn, u32 r, u64 cpu_addr); void cdns_pcie_reset_outbound_region(struct cdns_pcie *pcie, u32 r); +void cdns_pcie_disable_phy(struct cdns_pcie *pcie); +int cdns_pcie_enable_phy(struct cdns_pcie *pcie); +int cdns_pcie_init_phy(struct device *dev, struct cdns_pcie *pcie); #endif /* _PCIE_CADENCE_H */
If PHYs are present, they will be initialized and enabled in driver probe, and disabled in driver shutdown. Signed-off-by: Alan Douglas <adouglas@cadence.com> --- drivers/pci/cadence/pcie-cadence-ep.c | 14 ++++- drivers/pci/cadence/pcie-cadence-host.c | 31 +++++++++++ drivers/pci/cadence/pcie-cadence.c | 93 +++++++++++++++++++++++++++++++++ drivers/pci/cadence/pcie-cadence.h | 7 +++ 4 files changed, 144 insertions(+), 1 deletion(-)