diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/host/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/usb/host/ehci-atmel.c | 116 |
2 files changed, 123 insertions, 0 deletions
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 31eec0a..e0699d4 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -57,6 +57,13 @@ config USB_EHCI if USB_EHCI_HCD +config USB_EHCI_ATMEL + bool "Support for Atmel on-chip EHCI USB controller" + depends on ARCH_AT91 + default y + ---help--- + Enables support for the on-chip EHCI controller on Atmel chips. + config USB_EHCI_MARVELL bool "Support for MVEBU (AXP / A38x) on-chip EHCI USB controller" depends on ARCH_MVEBU diff --git a/drivers/usb/host/ehci-atmel.c b/drivers/usb/host/ehci-atmel.c index 1d7d280..d65bbe9 100644 --- a/drivers/usb/host/ehci-atmel.c +++ b/drivers/usb/host/ehci-atmel.c @@ -7,12 +7,18 @@ */ #include <common.h> +#include <clk.h> +#include <dm.h> #include <usb.h> #include <asm/io.h> #include <asm/arch/clk.h> #include "ehci.h" +DECLARE_GLOBAL_DATA_PTR; + +#ifndef CONFIG_DM_USB + int ehci_hcd_init(int index, enum usb_init_type init, struct ehci_hccr **hccr, struct ehci_hcor **hcor) { @@ -41,3 +47,113 @@ int ehci_hcd_stop(int index) return 0; } + +#else + +struct ehci_atmel_priv { + struct ehci_ctrl ehci; +}; + +static int ehci_atmel_enable_clk(struct udevice *dev) +{ + struct udevice *dev_clk; + struct clk clk; + int periph; + int ret; + + ret = clk_get_by_index(dev, 0, &clk); + if (ret) + return ret; + + ret = clk_enable(&clk); + if (ret) + return ret; + + ret = clk_get_by_index(dev, 1, &clk); + if (ret) + return -EINVAL; + + periph = fdtdec_get_uint(gd->fdt_blob, clk.dev->of_offset, "reg", -1); + if (periph < 0) + return -EINVAL; + + dev_clk = dev_get_parent(clk.dev); + if (!dev_clk) + return -ENODEV; + + ret = clk_request(dev_clk, &clk); + if (ret) + return ret; + + clk.id = periph; + ret = clk_enable(&clk); + if (ret) + return ret; + + clk_free(&clk); + + return 0; +} + +static int ehci_atmel_probe(struct udevice *dev) +{ + struct ehci_hccr *hccr; + struct ehci_hcor *hcor; + fdt_addr_t hcd_base; + int ret; + + ret = ehci_atmel_enable_clk(dev); + if (ret) { + debug("Failed to enable USB Host clock\n"); + return ret; + } + + /* + * Get the base address for EHCI controller from the device node + */ + hcd_base = dev_get_addr(dev); + if (hcd_base == FDT_ADDR_T_NONE) { + debug("Can't get the EHCI register base address\n"); + return -ENXIO; + } + + hccr = (struct ehci_hccr *)hcd_base; + hcor = (struct ehci_hcor *) + ((u32)hccr + HC_LENGTH(ehci_readl(&hccr->cr_capbase))); + + debug("echi-atmel: init hccr %x and hcor %x hc_length %d\n", + (u32)hccr, (u32)hcor, + (u32)HC_LENGTH(ehci_readl(&hccr->cr_capbase))); + + return ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST); +} + +static int ehci_atmel_remove(struct udevice *dev) +{ + int ret; + + ret = ehci_deregister(dev); + if (ret) + return ret; + + return 0; +} + +static const struct udevice_id ehci_usb_ids[] = { + { .compatible = "atmel,at91sam9g45-ehci", }, + { } +}; + +U_BOOT_DRIVER(ehci_atmel) = { + .name = "ehci_atmel", + .id = UCLASS_USB, + .of_match = ehci_usb_ids, + .probe = ehci_atmel_probe, + .remove = ehci_atmel_remove, + .ops = &ehci_usb_ops, + .platdata_auto_alloc_size = sizeof(struct usb_platdata), + .priv_auto_alloc_size = sizeof(struct ehci_atmel_priv), + .flags = DM_FLAG_ALLOC_PRIV_DMA, +}; + +#endif |