[PATCH] ARM: fixup irqflags breakage after ARM genirq merge
[linux-3.10.git] / arch / arm / mach-s3c2410 / usb-simtec.c
1 /* linux/arch/arm/mach-s3c2410/usb-simtec.c
2  *
3  * Copyright (c) 2004,2005 Simtec Electronics
4  *   Ben Dooks <ben@simtec.co.uk>
5  *
6  * http://www.simtec.co.uk/products/EB2410ITX/
7  *
8  * Simtec BAST and Thorcom VR1000 USB port support functions
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License version 2 as
12  * published by the Free Software Foundation.
13  *
14  * Modifications:
15  *      14-Sep-2004 BJD  Created
16  *      18-Oct-2004 BJD  Cleanups, and added code to report OC cleared
17  *      09-Aug-2005 BJD  Renamed s3c2410_report_oc to s3c2410_usb_report_oc
18  *      09-Aug-2005 BJD  Ports powered only if both are enabled
19 */
20
21 #define DEBUG
22
23 #include <linux/kernel.h>
24 #include <linux/types.h>
25 #include <linux/interrupt.h>
26 #include <linux/list.h>
27 #include <linux/timer.h>
28 #include <linux/init.h>
29 #include <linux/device.h>
30
31 #include <asm/mach/arch.h>
32 #include <asm/mach/map.h>
33 #include <asm/mach/irq.h>
34
35 #include <asm/arch/bast-map.h>
36 #include <asm/arch/bast-irq.h>
37 #include <asm/arch/usb-control.h>
38 #include <asm/arch/regs-gpio.h>
39
40 #include <asm/hardware.h>
41 #include <asm/io.h>
42 #include <asm/irq.h>
43
44 #include "devs.h"
45 #include "usb-simtec.h"
46
47 /* control power and monitor over-current events on various Simtec
48  * designed boards.
49 */
50
51 static unsigned int power_state[2];
52
53 static void
54 usb_simtec_powercontrol(int port, int to)
55 {
56         pr_debug("usb_simtec_powercontrol(%d,%d)\n", port, to);
57
58         power_state[port] = to;
59
60         if (power_state[0] && power_state[1])
61                 s3c2410_gpio_setpin(S3C2410_GPB4, 0);
62         else
63                 s3c2410_gpio_setpin(S3C2410_GPB4, 1);
64 }
65
66 static irqreturn_t
67 usb_simtec_ocirq(int irq, void *pw, struct pt_regs *regs)
68 {
69         struct s3c2410_hcd_info *info = (struct s3c2410_hcd_info *)pw;
70
71         if (s3c2410_gpio_getpin(S3C2410_GPG10) == 0) {
72                 pr_debug("usb_simtec: over-current irq (oc detected)\n");
73                 s3c2410_usb_report_oc(info, 3);
74         } else {
75                 pr_debug("usb_simtec: over-current irq (oc cleared)\n");
76                 s3c2410_usb_report_oc(info, 0);
77         }
78
79         return IRQ_HANDLED;
80 }
81
82 static void usb_simtec_enableoc(struct s3c2410_hcd_info *info, int on)
83 {
84         int ret;
85
86         if (on) {
87                 ret = request_irq(IRQ_USBOC, usb_simtec_ocirq,
88                                   IRQF_DISABLED | IRQF_TRIGGER_RISING |
89                                    IRQF_TRIGGER_FALLING,
90                                   "USB Over-current", info);
91                 if (ret != 0) {
92                         printk(KERN_ERR "failed to request usb oc irq\n");
93                 }
94         } else {
95                 free_irq(IRQ_USBOC, info);
96         }
97 }
98
99 static struct s3c2410_hcd_info usb_simtec_info = {
100         .port[0]        = {
101                 .flags  = S3C_HCDFLG_USED
102         },
103         .port[1]        = {
104                 .flags  = S3C_HCDFLG_USED
105         },
106
107         .power_control  = usb_simtec_powercontrol,
108         .enable_oc      = usb_simtec_enableoc,
109 };
110
111
112 int usb_simtec_init(void)
113 {
114         printk("USB Power Control, (c) 2004 Simtec Electronics\n");
115         s3c_device_usb.dev.platform_data = &usb_simtec_info;
116
117         s3c2410_gpio_cfgpin(S3C2410_GPB4, S3C2410_GPB4_OUTP);
118         s3c2410_gpio_setpin(S3C2410_GPB4, 1);
119         return 0;
120 }