diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/host/ehci-tegra.c | 143 |
1 files changed, 81 insertions, 62 deletions
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c index 36a5b72c9d..723023782a 100644 --- a/drivers/usb/host/ehci-tegra.c +++ b/drivers/usb/host/ehci-tegra.c @@ -703,6 +703,82 @@ static int fdt_decode_usb(const void *blob, int node, struct fdt_usb *config) return 0; } +int usb_common_init(struct fdt_usb *config, enum usb_init_type init) +{ + int ret = 0; + + switch (init) { + case USB_INIT_HOST: + switch (config->dr_mode) { + case DR_MODE_HOST: + case DR_MODE_OTG: + break; + default: + printf("tegrausb: Invalid dr_mode %d for host mode\n", + config->dr_mode); + return -1; + } + break; + case USB_INIT_DEVICE: + if (config->periph_id != PERIPH_ID_USBD) { + printf("tegrausb: Device mode only supported on first USB controller\n"); + return -1; + } + if (!config->utmi) { + printf("tegrausb: Device mode only supported with UTMI PHY\n"); + return -1; + } + switch (config->dr_mode) { + case DR_MODE_DEVICE: + case DR_MODE_OTG: + break; + default: + printf("tegrausb: Invalid dr_mode %d for device mode\n", + config->dr_mode); + return -1; + } + break; + default: + printf("tegrausb: Unknown USB_INIT_* %d\n", init); + return -1; + } + +#ifndef CONFIG_DM_USB + /* skip init, if the port is already initialized */ + if (config->initialized && config->init_type == init) + return 0; +#endif + + debug("%d, %d\n", config->utmi, config->ulpi); + if (config->utmi) + ret = init_utmi_usb_controller(config, init); + else if (config->ulpi) + ret = init_ulpi_usb_controller(config, init); + if (ret) + return ret; + + set_up_vbus(config, init); + + config->init_type = init; + + return 0; +} + +void usb_common_uninit(struct fdt_usb *priv) +{ + struct usb_ctlr *usbctlr; + + usbctlr = priv->reg; + + /* Stop controller */ + writel(0, &usbctlr->usb_cmd); + udelay(1000); + + /* Initiate controller reset */ + writel(2, &usbctlr->usb_cmd); + udelay(1000); +} + static const struct ehci_ops tegra_ehci_ops = { .set_usb_mode = tegra_ehci_set_usbmode, .get_port_speed = tegra_ehci_get_port_speed, @@ -795,6 +871,7 @@ int ehci_hcd_init(int index, enum usb_init_type init, { struct fdt_usb *config; struct usb_ctlr *usbctlr; + int ret; if (index >= port_count) return -1; @@ -802,62 +879,14 @@ int ehci_hcd_init(int index, enum usb_init_type init, config = &port[index]; ehci_set_controller_priv(index, config, &tegra_ehci_ops); - switch (init) { - case USB_INIT_HOST: - switch (config->dr_mode) { - case DR_MODE_HOST: - case DR_MODE_OTG: - break; - default: - printf("tegrausb: Invalid dr_mode %d for host mode\n", - config->dr_mode); - return -1; - } - break; - case USB_INIT_DEVICE: - if (config->periph_id != PERIPH_ID_USBD) { - printf("tegrausb: Device mode only supported on first USB controller\n"); - return -1; - } - if (!config->utmi) { - printf("tegrausb: Device mode only supported with UTMI PHY\n"); - return -1; - } - switch (config->dr_mode) { - case DR_MODE_DEVICE: - case DR_MODE_OTG: - break; - default: - printf("tegrausb: Invalid dr_mode %d for device mode\n", - config->dr_mode); - return -1; - } - break; - default: - printf("tegrausb: Unknown USB_INIT_* %d\n", init); - return -1; - } - - /* skip init, if the port is already initialized */ - if (config->initialized && config->init_type == init) - goto success; - - if (config->utmi && init_utmi_usb_controller(config, init)) { - printf("tegrausb: Cannot init port %d\n", index); - return -1; - } - - if (config->ulpi && init_ulpi_usb_controller(config, init)) { + ret = usb_common_init(config, init); + if (ret) { printf("tegrausb: Cannot init port %d\n", index); - return -1; + return ret; } - set_up_vbus(config, init); - config->initialized = 1; - config->init_type = init; -success: usbctlr = config->reg; *hccr = (struct ehci_hccr *)&usbctlr->cap_length; *hcor = (struct ehci_hcor *)&usbctlr->usb_cmd; @@ -870,17 +899,7 @@ success: */ int ehci_hcd_stop(int index) { - struct usb_ctlr *usbctlr; - - usbctlr = port[index].reg; - - /* Stop controller */ - writel(0, &usbctlr->usb_cmd); - udelay(1000); - - /* Initiate controller reset */ - writel(2, &usbctlr->usb_cmd); - udelay(1000); + usb_common_uninit(&port[index]); port[index].initialized = 0; |