Release 4.11 arch/arm/mach-s3c24xx/simtec-usb.c
/* linux/arch/arm/mach-s3c2410/usb-simtec.c
*
* Copyright 2004-2005 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
*
* http://www.simtec.co.uk/products/EB2410ITX/
*
* Simtec BAST and Thorcom VR1000 USB port support functions
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#define DEBUG
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/gpio.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/io.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <mach/hardware.h>
#include <mach/gpio-samsung.h>
#include <asm/irq.h>
#include <linux/platform_data/usb-ohci-s3c2410.h>
#include <plat/devs.h>
#include "bast.h"
#include "simtec.h"
/* control power and monitor over-current events on various Simtec
* designed boards.
*/
static unsigned int power_state[2];
static void
usb_simtec_powercontrol(int port, int to)
{
pr_debug("usb_simtec_powercontrol(%d,%d)\n", port, to);
power_state[port] = to;
if (power_state[0] && power_state[1])
gpio_set_value(S3C2410_GPB(4), 0);
else
gpio_set_value(S3C2410_GPB(4), 1);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ben Dooks | 61 | 100.00% | 4 | 100.00% |
| Total | 61 | 100.00% | 4 | 100.00% |
static irqreturn_t
usb_simtec_ocirq(int irq, void *pw)
{
struct s3c2410_hcd_info *info = pw;
if (gpio_get_value(S3C2410_GPG(10)) == 0) {
pr_debug("usb_simtec: over-current irq (oc detected)\n");
s3c2410_usb_report_oc(info, 3);
} else {
pr_debug("usb_simtec: over-current irq (oc cleared)\n");
s3c2410_usb_report_oc(info, 0);
}
return IRQ_HANDLED;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ben Dooks | 64 | 100.00% | 5 | 100.00% |
| Total | 64 | 100.00% | 5 | 100.00% |
static void usb_simtec_enableoc(struct s3c2410_hcd_info *info, int on)
{
int ret;
if (on) {
ret = request_irq(BAST_IRQ_USBOC, usb_simtec_ocirq,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
"USB Over-current", info);
if (ret != 0) {
printk(KERN_ERR "failed to request usb oc irq\n");
}
} else {
free_irq(BAST_IRQ_USBOC, info);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ben Dooks | 59 | 92.19% | 2 | 40.00% |
| Kukjin Kim | 2 | 3.12% | 1 | 20.00% |
| Thomas Gleixner | 2 | 3.12% | 1 | 20.00% |
| Russell King | 1 | 1.56% | 1 | 20.00% |
| Total | 64 | 100.00% | 5 | 100.00% |
static struct s3c2410_hcd_info usb_simtec_info __initdata = {
.port[0] = {
.flags = S3C_HCDFLG_USED
},
.port[1] = {
.flags = S3C_HCDFLG_USED
},
.power_control = usb_simtec_powercontrol,
.enable_oc = usb_simtec_enableoc,
};
int __init usb_simtec_init(void)
{
int ret;
printk("USB Power Control, Copyright 2004 Simtec Electronics\n");
ret = gpio_request(S3C2410_GPB(4), "USB power control");
if (ret < 0) {
pr_err("%s: failed to get GPB4\n", __func__);
return ret;
}
ret = gpio_request(S3C2410_GPG(10), "USB overcurrent");
if (ret < 0) {
pr_err("%s: failed to get GPG10\n", __func__);
gpio_free(S3C2410_GPB(4));
return ret;
}
/* turn power on */
gpio_direction_output(S3C2410_GPB(4), 1);
gpio_direction_input(S3C2410_GPG(10));
s3c_ohci_set_platdata(&usb_simtec_info);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ben Dooks | 111 | 99.11% | 5 | 83.33% |
| Arnd Bergmann | 1 | 0.89% | 1 | 16.67% |
| Total | 112 | 100.00% | 6 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ben Dooks | 397 | 95.66% | 11 | 57.89% |
| Linus Walleij | 5 | 1.20% | 2 | 10.53% |
| Kukjin Kim | 5 | 1.20% | 1 | 5.26% |
| Russell King | 4 | 0.96% | 2 | 10.53% |
| Thomas Gleixner | 2 | 0.48% | 1 | 5.26% |
| Arnd Bergmann | 1 | 0.24% | 1 | 5.26% |
| Heiko Stübner | 1 | 0.24% | 1 | 5.26% |
| Total | 415 | 100.00% | 19 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.