DWC3 Ips can have more than 1 PHY for USB2 and 1 PHY for USB3, add support for a generic number of PHYs and adapt the code to handle a generic number of PHYs.
Signed-off-by: Neil Armstrong narmstrong@baylibre.com --- drivers/usb/host/xhci-dwc3.c | 105 ++++++++++++++++++++++++------------------- 1 file changed, 58 insertions(+), 47 deletions(-)
diff --git a/drivers/usb/host/xhci-dwc3.c b/drivers/usb/host/xhci-dwc3.c index 1022dd5..da29162 100644 --- a/drivers/usb/host/xhci-dwc3.c +++ b/drivers/usb/host/xhci-dwc3.c @@ -22,8 +22,8 @@ DECLARE_GLOBAL_DATA_PTR;
struct xhci_dwc3_platdata { - struct phy usb_phy; - struct phy usb3_phy; + struct phy *usb_phys; + int num_phys; };
void dwc3_set_mode(struct dwc3 *dwc3_reg, u32 mode) @@ -113,45 +113,74 @@ void dwc3_set_fladj(struct dwc3 *dwc3_reg, u32 val) }
#ifdef CONFIG_DM_USB -static int xhci_dwc3_setup_phy(struct udevice *dev, int index, struct phy *phy) +static int xhci_dwc3_setup_phy(struct udevice *dev, int count) { - int ret = 0; + struct xhci_dwc3_platdata *plat = dev_get_platdata(dev); + int i, ret; + + if (!count) + return 0;
- ret = generic_phy_get_by_index(dev, index, phy); - if (ret) { - if (ret != -ENOENT) { - pr_err("Failed to get USB PHY for %s\n", dev->name); + plat->usb_phys = devm_kcalloc(dev, count, sizeof(struct phy), + GFP_KERNEL); + if (!plat->usb_phys) + return -ENOMEM; + + for (i = 0; i < count; i++) { + ret = generic_phy_get_by_index(dev, i, &plat->usb_phys[i]); + if (ret && ret != -ENOENT) { + pr_err("Failed to get USB PHY%d for %s\n", + i, dev->name); return ret; } - } else { - ret = generic_phy_init(phy); + + ++plat->num_phys; + } + + for (i = 0; i < plat->num_phys; i++) { + ret = generic_phy_init(&plat->usb_phys[i]); if (ret) { - pr_err("Can't init USB PHY for %s\n", dev->name); - return ret; + pr_err("Can't init USB PHY%d for %s\n", + i, dev->name); + goto phys_err; } - ret = generic_phy_power_on(phy); + } + + for (i = 0; i < plat->num_phys; i++) { + ret = generic_phy_power_on(&plat->usb_phys[i]); if (ret) { - pr_err("Can't power on USB PHY for %s\n", dev->name); - generic_phy_exit(phy); - return ret; + pr_err("Can't power USB PHY%d for %s\n", + i, dev->name); + goto phys_err; } }
return 0; + +phys_err: + for (; i >= 0; i--) { + generic_phy_power_off(&plat->usb_phys[i]); + generic_phy_exit(&plat->usb_phys[i]); + } + + return ret; }
-static int xhci_dwc3_shutdown_phy(struct phy *phy) +static int xhci_dwc3_shutdown_phy(struct udevice *dev) { - int ret = 0; + struct xhci_dwc3_platdata *plat = dev_get_platdata(dev); + int i, ret;
- if (generic_phy_valid(phy)) { - ret = generic_phy_power_off(phy); - if (ret) - return ret; + for (i = 0; i < plat->num_phys; i++) { + if (!generic_phy_valid(&plat->usb_phys[i])) + continue;
- ret = generic_phy_exit(phy); - if (ret) - return ret; + ret = generic_phy_power_off(&plat->usb_phys[i]); + ret |= generic_phy_exit(&plat->usb_phys[i]); + if (ret) { + pr_err("Can't shutdown USB PHY%d for %s\n", + i, dev->name); + } }
return 0; @@ -159,7 +188,6 @@ static int xhci_dwc3_shutdown_phy(struct phy *phy)
static int xhci_dwc3_probe(struct udevice *dev) { - struct xhci_dwc3_platdata *plat = dev_get_platdata(dev); struct xhci_hcor *hcor; struct xhci_hccr *hccr; struct dwc3 *dwc3_reg; @@ -170,18 +198,10 @@ static int xhci_dwc3_probe(struct udevice *dev) hcor = (struct xhci_hcor *)((uintptr_t)hccr + HC_LENGTH(xhci_readl(&(hccr)->cr_capbase)));
- ret = xhci_dwc3_setup_phy(dev, 0, &plat->usb_phy); - if (ret) { - pr_err("Failed to setup USB PHY for %s\n", dev->name); - return ret; - } - - ret = xhci_dwc3_setup_phy(dev, 1, &plat->usb3_phy); - if (ret) { - pr_err("Failed to setup USB3 PHY for %s\n", dev->name); - xhci_dwc3_shutdown_phy(&plat->usb_phy); + ret = xhci_dwc3_setup_phy(dev, dev_count_phandle_with_args( + dev, "phys", "#phy-cells")); + if (ret) return ret; - }
dwc3_reg = (struct dwc3 *)((char *)(hccr) + DWC3_REG_OFFSET);
@@ -199,16 +219,7 @@ static int xhci_dwc3_probe(struct udevice *dev)
static int xhci_dwc3_remove(struct udevice *dev) { - struct xhci_dwc3_platdata *plat = dev_get_platdata(dev); - int ret; - - ret = xhci_dwc3_shutdown_phy(&plat->usb_phy); - if (ret) - pr_err("Can't shutdown USB PHY for %s\n", dev->name); - - ret = xhci_dwc3_shutdown_phy(&plat->usb3_phy); - if (ret) - pr_err("Can't shutdown USB3 PHY for %s\n", dev->name); + xhci_dwc3_shutdown_phy(dev);
return xhci_deregister(dev); }