mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 13:43:55 +08:00
6774def642
This patch fix spelling typo in printk and Kconfig within various part of kernel sources. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
188 lines
5.1 KiB
C
188 lines
5.1 KiB
C
/*
|
|
* Copyright (C) 2007 by Alan Stern
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
|
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
/* this file is part of ehci-hcd.c */
|
|
|
|
|
|
/* Display the ports dedicated to the companion controller */
|
|
static ssize_t show_companion(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct ehci_hcd *ehci;
|
|
int nports, index, n;
|
|
int count = PAGE_SIZE;
|
|
char *ptr = buf;
|
|
|
|
ehci = hcd_to_ehci(bus_to_hcd(dev_get_drvdata(dev)));
|
|
nports = HCS_N_PORTS(ehci->hcs_params);
|
|
|
|
for (index = 0; index < nports; ++index) {
|
|
if (test_bit(index, &ehci->companion_ports)) {
|
|
n = scnprintf(ptr, count, "%d\n", index + 1);
|
|
ptr += n;
|
|
count -= n;
|
|
}
|
|
}
|
|
return ptr - buf;
|
|
}
|
|
|
|
/*
|
|
* Dedicate or undedicate a port to the companion controller.
|
|
* Syntax is "[-]portnum", where a leading '-' sign means
|
|
* return control of the port to the EHCI controller.
|
|
*/
|
|
static ssize_t store_companion(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct ehci_hcd *ehci;
|
|
int portnum, new_owner;
|
|
|
|
ehci = hcd_to_ehci(bus_to_hcd(dev_get_drvdata(dev)));
|
|
new_owner = PORT_OWNER; /* Owned by companion */
|
|
if (sscanf(buf, "%d", &portnum) != 1)
|
|
return -EINVAL;
|
|
if (portnum < 0) {
|
|
portnum = - portnum;
|
|
new_owner = 0; /* Owned by EHCI */
|
|
}
|
|
if (portnum <= 0 || portnum > HCS_N_PORTS(ehci->hcs_params))
|
|
return -ENOENT;
|
|
portnum--;
|
|
if (new_owner)
|
|
set_bit(portnum, &ehci->companion_ports);
|
|
else
|
|
clear_bit(portnum, &ehci->companion_ports);
|
|
set_owner(ehci, portnum, new_owner);
|
|
return count;
|
|
}
|
|
static DEVICE_ATTR(companion, 0644, show_companion, store_companion);
|
|
|
|
|
|
/*
|
|
* Display / Set uframe_periodic_max
|
|
*/
|
|
static ssize_t show_uframe_periodic_max(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct ehci_hcd *ehci;
|
|
int n;
|
|
|
|
ehci = hcd_to_ehci(bus_to_hcd(dev_get_drvdata(dev)));
|
|
n = scnprintf(buf, PAGE_SIZE, "%d\n", ehci->uframe_periodic_max);
|
|
return n;
|
|
}
|
|
|
|
|
|
static ssize_t store_uframe_periodic_max(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct ehci_hcd *ehci;
|
|
unsigned uframe_periodic_max;
|
|
unsigned uframe;
|
|
unsigned long flags;
|
|
ssize_t ret;
|
|
|
|
ehci = hcd_to_ehci(bus_to_hcd(dev_get_drvdata(dev)));
|
|
if (kstrtouint(buf, 0, &uframe_periodic_max) < 0)
|
|
return -EINVAL;
|
|
|
|
if (uframe_periodic_max < 100 || uframe_periodic_max >= 125) {
|
|
ehci_info(ehci, "rejecting invalid request for "
|
|
"uframe_periodic_max=%u\n", uframe_periodic_max);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = -EINVAL;
|
|
|
|
/*
|
|
* lock, so that our checking does not race with possible periodic
|
|
* bandwidth allocation through submitting new urbs.
|
|
*/
|
|
spin_lock_irqsave (&ehci->lock, flags);
|
|
|
|
/*
|
|
* for request to decrease max periodic bandwidth, we have to check
|
|
* to see whether the decrease is possible.
|
|
*/
|
|
if (uframe_periodic_max < ehci->uframe_periodic_max) {
|
|
u8 allocated_max = 0;
|
|
|
|
for (uframe = 0; uframe < EHCI_BANDWIDTH_SIZE; ++uframe)
|
|
allocated_max = max(allocated_max,
|
|
ehci->bandwidth[uframe]);
|
|
|
|
if (allocated_max > uframe_periodic_max) {
|
|
ehci_info(ehci,
|
|
"cannot decrease uframe_periodic_max because "
|
|
"periodic bandwidth is already allocated "
|
|
"(%u > %u)\n",
|
|
allocated_max, uframe_periodic_max);
|
|
goto out_unlock;
|
|
}
|
|
}
|
|
|
|
/* increasing is always ok */
|
|
|
|
ehci_info(ehci, "setting max periodic bandwidth to %u%% "
|
|
"(== %u usec/uframe)\n",
|
|
100*uframe_periodic_max/125, uframe_periodic_max);
|
|
|
|
if (uframe_periodic_max != 100)
|
|
ehci_warn(ehci, "max periodic bandwidth set is non-standard\n");
|
|
|
|
ehci->uframe_periodic_max = uframe_periodic_max;
|
|
ret = count;
|
|
|
|
out_unlock:
|
|
spin_unlock_irqrestore (&ehci->lock, flags);
|
|
return ret;
|
|
}
|
|
static DEVICE_ATTR(uframe_periodic_max, 0644, show_uframe_periodic_max, store_uframe_periodic_max);
|
|
|
|
|
|
static inline int create_sysfs_files(struct ehci_hcd *ehci)
|
|
{
|
|
struct device *controller = ehci_to_hcd(ehci)->self.controller;
|
|
int i = 0;
|
|
|
|
/* with integrated TT there is no companion! */
|
|
if (!ehci_is_TDI(ehci))
|
|
i = device_create_file(controller, &dev_attr_companion);
|
|
if (i)
|
|
goto out;
|
|
|
|
i = device_create_file(controller, &dev_attr_uframe_periodic_max);
|
|
out:
|
|
return i;
|
|
}
|
|
|
|
static inline void remove_sysfs_files(struct ehci_hcd *ehci)
|
|
{
|
|
struct device *controller = ehci_to_hcd(ehci)->self.controller;
|
|
|
|
/* with integrated TT there is no companion! */
|
|
if (!ehci_is_TDI(ehci))
|
|
device_remove_file(controller, &dev_attr_companion);
|
|
|
|
device_remove_file(controller, &dev_attr_uframe_periodic_max);
|
|
}
|