mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 01:38:22 +00:00
a821c4af79
These support the flat device tree. We want to use the dev_read_..() prefix for functions that support both flat tree and live tree. So rename the existing functions to avoid confusion. In the end we will have: 1. dev_read_addr...() - works on devices, supports flat/live tree 2. devfdt_get_addr...() - current functions, flat tree only 3. of_get_address() etc. - new functions, live tree only All drivers will be written to use 1. That function will in turn call either 2 or 3 depending on whether the flat or live tree is in use. Note this involves changing some dead code - the imx_lpi2c.c file. Signed-off-by: Simon Glass <sjg@chromium.org>
133 lines
2.5 KiB
C
133 lines
2.5 KiB
C
/*
|
|
* (C) Copyright 2012
|
|
* Atmel Semiconductor <www.atmel.com>
|
|
* Written-by: Bo Shen <voice.shen@atmel.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#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)
|
|
{
|
|
/* 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
|