9ed64195e3
Now that the SPDX tag is in all USB files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Jonathan Hunter <jonathanh@nvidia.com> Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (C) 2014 Marvell
|
|
* Author: Gregory CLEMENT <gregory.clement@free-electrons.com>
|
|
*/
|
|
|
|
#include <linux/io.h>
|
|
#include <linux/mbus.h>
|
|
#include <linux/of.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#include <linux/usb.h>
|
|
#include <linux/usb/hcd.h>
|
|
|
|
#include "xhci-mvebu.h"
|
|
|
|
#define USB3_MAX_WINDOWS 4
|
|
#define USB3_WIN_CTRL(w) (0x0 + ((w) * 8))
|
|
#define USB3_WIN_BASE(w) (0x4 + ((w) * 8))
|
|
|
|
static void xhci_mvebu_mbus_config(void __iomem *base,
|
|
const struct mbus_dram_target_info *dram)
|
|
{
|
|
int win;
|
|
|
|
/* Clear all existing windows */
|
|
for (win = 0; win < USB3_MAX_WINDOWS; win++) {
|
|
writel(0, base + USB3_WIN_CTRL(win));
|
|
writel(0, base + USB3_WIN_BASE(win));
|
|
}
|
|
|
|
/* Program each DRAM CS in a seperate window */
|
|
for (win = 0; win < dram->num_cs; win++) {
|
|
const struct mbus_dram_window *cs = dram->cs + win;
|
|
|
|
writel(((cs->size - 1) & 0xffff0000) | (cs->mbus_attr << 8) |
|
|
(dram->mbus_dram_target_id << 4) | 1,
|
|
base + USB3_WIN_CTRL(win));
|
|
|
|
writel((cs->base & 0xffff0000), base + USB3_WIN_BASE(win));
|
|
}
|
|
}
|
|
|
|
int xhci_mvebu_mbus_init_quirk(struct usb_hcd *hcd)
|
|
{
|
|
struct device *dev = hcd->self.controller;
|
|
struct platform_device *pdev = to_platform_device(dev);
|
|
struct resource *res;
|
|
void __iomem *base;
|
|
const struct mbus_dram_target_info *dram;
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
|
|
if (!res)
|
|
return -ENODEV;
|
|
|
|
/*
|
|
* We don't use devm_ioremap() because this mapping should
|
|
* only exists for the duration of this probe function.
|
|
*/
|
|
base = ioremap(res->start, resource_size(res));
|
|
if (!base)
|
|
return -ENODEV;
|
|
|
|
dram = mv_mbus_dram_info();
|
|
xhci_mvebu_mbus_config(base, dram);
|
|
|
|
/*
|
|
* This memory area was only needed to configure the MBus
|
|
* windows, and is therefore no longer useful.
|
|
*/
|
|
iounmap(base);
|
|
|
|
return 0;
|
|
}
|