mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-06 11:16:15 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
131 lines
2.5 KiB
C
131 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2012
|
|
* Atmel Semiconductor <www.atmel.com>
|
|
* Written-by: Bo Shen <voice.shen@atmel.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <clk.h>
|
|
#include <dm.h>
|
|
#include <usb.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/clk.h>
|
|
|
|
#include "ehci.h"
|
|
|
|
#ifndef CONFIG_DM_USB
|
|
|
|
int ehci_hcd_init(int index, enum usb_init_type init,
|
|
struct ehci_hccr **hccr, struct ehci_hcor **hcor)
|
|
{
|
|
/* Enable UTMI PLL */
|
|
if (at91_upll_clk_enable())
|
|
return -1;
|
|
|
|
/* Enable USB Host clock */
|
|
at91_periph_clk_enable(ATMEL_ID_UHPHS);
|
|
|
|
*hccr = (struct ehci_hccr *)ATMEL_BASE_EHCI;
|
|
*hcor = (struct ehci_hcor *)((uint32_t)*hccr +
|
|
HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ehci_hcd_stop(int index)
|
|
{
|
|
/* Disable USB Host Clock */
|
|
at91_periph_clk_disable(ATMEL_ID_UHPHS);
|
|
|
|
/* Disable UTMI PLL */
|
|
if (at91_upll_clk_disable())
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#else
|
|
|
|
struct ehci_atmel_priv {
|
|
struct ehci_ctrl ehci;
|
|
};
|
|
|
|
static int ehci_atmel_enable_clk(struct udevice *dev)
|
|
{
|
|
struct clk clk;
|
|
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;
|
|
|
|
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 = devfdt_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 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_deregister,
|
|
.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
|