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openwrt-xburst/package/broadcom-diag/src/diag.c
nbd 37d063a852 fix a memleak in broadcom-diag (#1780)
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7683 3c298f89-4303-0410-b956-a3cf2f4a3e73
2007-06-20 21:52:55 +00:00

1046 lines
26 KiB
C

/*
* diag.c - GPIO interface driver for Broadcom boards
*
* Copyright (C) 2006 Mike Baker <mbm@openwrt.org>,
* Felix Fietkau <nbd@openwrt.org>
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Id$
*/
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/kmod.h>
#include <linux/proc_fs.h>
#include <linux/timer.h>
#include <linux/version.h>
#include <asm/uaccess.h>
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
#include <linux/kobject.h>
#include <linux/workqueue.h>
#define hotplug_path uevent_helper
#else
#include <linux/tqueue.h>
#define INIT_WORK INIT_TQUEUE
#define schedule_work schedule_task
#define work_struct tq_struct
#endif
#include "gpio.h"
#include "diag.h"
#define getvar(str) (nvram_get(str)?:"")
static unsigned int gpiomask = 0;
module_param(gpiomask, int, 0644);
enum {
/* Linksys */
WAP54GV1,
WAP54GV3,
WRT54GV1,
WRT54G,
WRTSL54GS,
WRT54G3G,
WRT350N,
/* ASUS */
WLHDD,
WL300G,
WL500G,
WL500GD,
WL500GP,
WL500W,
ASUS_4702,
WL700GE,
/* Buffalo */
WBR2_G54,
WHR_G54S,
WHR_HP_G54,
WHR2_A54G54,
WLA2_G54L,
WZR_G300N,
WZR_RS_G54,
WZR_RS_G54HP,
BUFFALO_UNKNOWN,
BUFFALO_UNKNOWN_4710,
/* Siemens */
SE505V1,
SE505V2,
/* US Robotics */
USR5461,
/* Dell */
TM2300,
/* Motorola */
WE800G,
WR850GV1,
WR850GV2V3,
/* Belkin */
BELKIN_UNKNOWN,
/* Netgear */
WGT634U,
/* Trendware */
TEW411BRPP,
/* SimpleTech */
STI_NAS,
/* D-Link */
DIR130,
DIR330,
};
static void __init bcm4780_init(void) {
int pin = 1 << 3;
/* Enables GPIO 3 that controls HDD and led power on ASUS WL-700gE */
printk(MODULE_NAME ": Spinning up HDD and enabling leds\n");
gpio_outen(pin, pin);
gpio_control(pin, 0);
gpio_out(pin, pin);
/* Wait 5s, so the HDD can spin up */
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(HZ * 5);
}
static struct platform_t __initdata platforms[] = {
/* Linksys */
[WAP54GV1] = {
.name = "Linksys WAP54G V1",
.buttons = {
{ .name = "reset", .gpio = 1 << 0 },
},
.leds = {
{ .name = "diag", .gpio = 1 << 3 },
{ .name = "wlan", .gpio = 1 << 4 },
},
},
[WAP54GV3] = {
.name = "Linksys WAP54G V3",
.buttons = {
/* FIXME: verify this */
{ .name = "reset", .gpio = 1 << 7 },
{ .name = "ses", .gpio = 1 << 0 },
},
.leds = {
/* FIXME: diag? */
{ .name = "ses", .gpio = 1 << 1 },
},
},
[WRT54GV1] = {
.name = "Linksys WRT54G V1.x",
.buttons = {
{ .name = "reset", .gpio = 1 << 6 },
},
.leds = {
{ .name = "diag", .gpio = 0x13 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
{ .name = "dmz", .gpio = 0x12 | GPIO_TYPE_EXTIF, .polarity = NORMAL },
},
},
[WRT54G] = {
.name = "Linksys WRT54G/GS/GL",
.buttons = {
{ .name = "reset", .gpio = 1 << 6 },
{ .name = "ses", .gpio = 1 << 4 },
},
.leds = {
{ .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
{ .name = "dmz", .gpio = 1 << 7, .polarity = REVERSE },
{ .name = "ses_white", .gpio = 1 << 2, .polarity = REVERSE },
{ .name = "ses_orange", .gpio = 1 << 3, .polarity = REVERSE },
{ .name = "wlan", .gpio = 1 << 0, .polarity = REVERSE },
},
},
[WRTSL54GS] = {
.name = "Linksys WRTSL54GS",
.buttons = {
{ .name = "reset", .gpio = 1 << 6 },
{ .name = "ses", .gpio = 1 << 4 },
},
.leds = {
{ .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
{ .name = "dmz", .gpio = 1 << 0, .polarity = REVERSE },
{ .name = "ses_white", .gpio = 1 << 5, .polarity = REVERSE },
{ .name = "ses_orange", .gpio = 1 << 7, .polarity = REVERSE },
},
},
[WRT54G3G] = {
.name = "Linksys WRT54G3G",
.buttons = {
{ .name = "reset", .gpio = 1 << 6 },
{ .name = "3g", .gpio = 1 << 4 },
},
.leds = {
{ .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
{ .name = "dmz", .gpio = 1 << 7, .polarity = REVERSE },
{ .name = "3g_green", .gpio = 1 << 2, .polarity = NORMAL },
{ .name = "3g_blue", .gpio = 1 << 3, .polarity = NORMAL },
{ .name = "3g_blink", .gpio = 1 << 5, .polarity = NORMAL },
},
},
[WRT350N] = {
.name = "Linksys WRT350N",
.buttons = {
{ .name = "reset", .gpio = 1 << 6 },
{ .name = "ses", .gpio = 1 << 8 },
},
.leds = {
{ .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
{ .name = "ses", .gpio = 1 << 3, .polarity = REVERSE },
},
},
/* Asus */
[WLHDD] = {
.name = "ASUS WL-HDD",
.buttons = {
{ .name = "reset", .gpio = 1 << 6 },
},
.leds = {
{ .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
{ .name = "usb", .gpio = 1 << 2, .polarity = NORMAL },
},
},
[WL300G] = {
.name = "ASUS WL-300g",
.buttons = {
{ .name = "reset", .gpio = 1 << 6 },
},
.leds = {
{ .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
},
},
[WL500G] = {
.name = "ASUS WL-500g",
.buttons = {
{ .name = "reset", .gpio = 1 << 6 },
},
.leds = {
{ .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
},
},
[WL500GD] = {
.name = "ASUS WL-500g Deluxe",
.buttons = {
{ .name = "reset", .gpio = 1 << 6 },
},
.leds = {
{ .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
},
},
[WL500GP] = {
.name = "ASUS WL-500g Premium",
.buttons = {
{ .name = "reset", .gpio = 1 << 0 },
{ .name = "ses", .gpio = 1 << 4 },
},
.leds = {
{ .name = "power", .gpio = 1 << 1, .polarity = REVERSE },
},
},
[WL500W] = {
.name = "ASUS WL-500W",
.buttons = {
{ .name = "reset", .gpio = 1 << 6 },
{ .name = "ses", .gpio = 1 << 7 },
},
.leds = {
{ .name = "power", .gpio = 1 << 5, .polarity = REVERSE },
},
},
[ASUS_4702] = {
.name = "ASUS (unknown, BCM4702)",
.buttons = {
{ .name = "reset", .gpio = 1 << 6 },
},
.leds = {
{ .name = "power", .gpio = 1 << 0, .polarity = REVERSE },
},
},
[WL700GE] = {
.name = "ASUS WL-700gE",
.buttons = {
{ .name = "reset", .gpio = 1 << 7 }, // on back, hardwired, always resets device regardless OS state
{ .name = "ses", .gpio = 1 << 4 }, // on back, actual name ezsetup
{ .name = "power", .gpio = 1 << 0 }, // on front
{ .name = "copy", .gpio = 1 << 6 }, // on front
},
.leds = {
#if 0
// GPIO that controls power led also enables/disables some essential functions
// - power to HDD
// - switch leds
{ .name = "power", .gpio = 1 << 3, .polarity = NORMAL }, // actual name power
#endif
{ .name = "diag", .gpio = 1 << 1, .polarity = REVERSE }, // actual name ready
},
.platform_init = bcm4780_init,
},
/* Buffalo */
[WHR_G54S] = {
.name = "Buffalo WHR-G54S",
.buttons = {
{ .name = "reset", .gpio = 1 << 4 },
{ .name = "bridge", .gpio = 1 << 5 },
{ .name = "ses", .gpio = 1 << 0 },
},
.leds = {
{ .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
{ .name = "internal", .gpio = 1 << 3, .polarity = REVERSE },
{ .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
{ .name = "bridge", .gpio = 1 << 1, .polarity = REVERSE },
{ .name = "wlan", .gpio = 1 << 2, .polarity = REVERSE },
},
},
[WBR2_G54] = {
.name = "Buffalo WBR2-G54",
/* FIXME: verify */
.buttons = {
{ .name = "reset", .gpio = 1 << 7 },
},
.leds = {
{ .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
},
},
[WHR_HP_G54] = {
.name = "Buffalo WHR-HP-G54",
.buttons = {
{ .name = "reset", .gpio = 1 << 4 },
{ .name = "bridge", .gpio = 1 << 5 },
{ .name = "ses", .gpio = 1 << 0 },
},
.leds = {
{ .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
{ .name = "internal", .gpio = 1 << 3, .polarity = REVERSE },
{ .name = "bridge", .gpio = 1 << 1, .polarity = REVERSE },
{ .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
{ .name = "wlan", .gpio = 1 << 2, .polarity = REVERSE },
},
},
[WHR2_A54G54] = {
.name = "Buffalo WHR2-A54G54",
.buttons = {
{ .name = "reset", .gpio = 1 << 4 },
},
.leds = {
{ .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
},
},
[WLA2_G54L] = {
.name = "Buffalo WLA2-G54L",
/* FIXME: verify */
.buttons = {
{ .name = "reset", .gpio = 1 << 7 },
},
.leds = {
{ .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
},
},
[WZR_G300N] = {
.name = "Buffalo WZR-G300N",
.buttons = {
{ .name = "reset", .gpio = 1 << 4 },
},
.leds = {
{ .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
{ .name = "bridge", .gpio = 1 << 1, .polarity = REVERSE },
{ .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
},
},
[WZR_RS_G54] = {
.name = "Buffalo WZR-RS-G54",
.buttons = {
{ .name = "ses", .gpio = 1 << 0 },
{ .name = "reset", .gpio = 1 << 4 },
},
.leds = {
{ .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
{ .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
{ .name = "vpn", .gpio = 1 << 1, .polarity = REVERSE },
},
},
[WZR_RS_G54HP] = {
.name = "Buffalo WZR-RS-G54HP",
.buttons = {
{ .name = "ses", .gpio = 1 << 0 },
{ .name = "reset", .gpio = 1 << 4 },
},
.leds = {
{ .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
{ .name = "ses", .gpio = 1 << 6, .polarity = REVERSE },
{ .name = "vpn", .gpio = 1 << 1, .polarity = REVERSE },
},
},
[BUFFALO_UNKNOWN] = {
.name = "Buffalo (unknown)",
.buttons = {
{ .name = "reset", .gpio = 1 << 7 },
},
.leds = {
{ .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
},
},
[BUFFALO_UNKNOWN_4710] = {
.name = "Buffalo (unknown, BCM4710)",
.buttons = {
{ .name = "reset", .gpio = 1 << 4 },
},
.leds = {
{ .name = "diag", .gpio = 1 << 1, .polarity = REVERSE },
},
},
/* Siemens */
[SE505V1] = {
.name = "Siemens SE505 V1",
.buttons = {
/* No usable buttons */
},
.leds = {
{ .name = "dmz", .gpio = 1 << 4, .polarity = REVERSE },
{ .name = "wlan", .gpio = 1 << 3, .polarity = REVERSE },
},
},
[SE505V2] = {
.name = "Siemens SE505 V2",
.buttons = {
/* No usable buttons */
},
.leds = {
{ .name = "power", .gpio = 1 << 5, .polarity = REVERSE },
{ .name = "dmz", .gpio = 1 << 0, .polarity = REVERSE },
{ .name = "wlan", .gpio = 1 << 3, .polarity = REVERSE },
},
},
/* US Robotics */
[USR5461] = {
.name = "U.S. Robotics USR5461",
.buttons = {
/* No usable buttons */
},
.leds = {
{ .name = "wlan", .gpio = 1 << 0, .polarity = REVERSE },
{ .name = "printer", .gpio = 1 << 1, .polarity = REVERSE },
},
},
/* Dell */
[TM2300] = {
.name = "Dell TrueMobile 2300",
.buttons = {
{ .name = "reset", .gpio = 1 << 0 },
},
.leds = {
{ .name = "wlan", .gpio = 1 << 6, .polarity = REVERSE },
{ .name = "power", .gpio = 1 << 7, .polarity = REVERSE },
},
},
/* Motorola */
[WE800G] = {
.name = "Motorola WE800G",
.buttons = {
{ .name = "reset", .gpio = 1 << 0 },
},
.leds = {
{ .name = "power", .gpio = 1 << 4, .polarity = NORMAL },
{ .name = "diag", .gpio = 1 << 2, .polarity = REVERSE },
{ .name = "wlan_amber", .gpio = 1 << 1, .polarity = NORMAL },
},
},
[WR850GV1] = {
.name = "Motorola WR850G V1",
.buttons = {
{ .name = "reset", .gpio = 1 << 0 },
},
.leds = {
{ .name = "power", .gpio = 1 << 4, .polarity = NORMAL },
{ .name = "diag", .gpio = 1 << 3, .polarity = REVERSE },
{ .name = "dmz", .gpio = 1 << 6, .polarity = NORMAL },
{ .name = "wlan_red", .gpio = 1 << 5, .polarity = REVERSE },
{ .name = "wlan_green", .gpio = 1 << 7, .polarity = REVERSE },
},
},
[WR850GV2V3] = {
.name = "Motorola WR850G V2/V3",
.buttons = {
{ .name = "reset", .gpio = 1 << 5 },
},
.leds = {
{ .name = "power", .gpio = 1 << 1, .polarity = NORMAL },
{ .name = "wlan", .gpio = 1 << 0, .polarity = REVERSE },
{ .name = "dmz", .gpio = 1 << 6, .polarity = REVERSE },
{ .name = "diag", .gpio = 1 << 7, .polarity = REVERSE },
},
},
/* Belkin */
[BELKIN_UNKNOWN] = {
.name = "Belkin (unknown)",
/* FIXME: verify & add detection */
.buttons = {
{ .name = "reset", .gpio = 1 << 7 },
},
.leds = {
{ .name = "power", .gpio = 1 << 5, .polarity = NORMAL },
{ .name = "wlan", .gpio = 1 << 3, .polarity = NORMAL },
{ .name = "connected", .gpio = 1 << 0, .polarity = NORMAL },
},
},
/* Netgear */
[WGT634U] = {
.name = "Netgear WGT634U",
.buttons = {
{ .name = "reset", .gpio = 1 << 2 },
},
.leds = {
{ .name = "power", .gpio = 1 << 3, .polarity = NORMAL },
},
},
/* Trendware */
[TEW411BRPP] = {
.name = "Trendware TEW411BRP+",
.buttons = {
{ /* No usable buttons */ },
},
.leds = {
{ .name = "power", .gpio = 1 << 7, .polarity = NORMAL },
{ .name = "wlan", .gpio = 1 << 1, .polarity = NORMAL },
{ .name = "bridge", .gpio = 1 << 6, .polarity = NORMAL },
},
},
/* SimpleTech */
[STI_NAS] = {
.name = "SimpleTech SimpleShare NAS",
.buttons = {
{ .name = "reset", .gpio = 1 << 7 }, // on back, hardwired, always resets device regardless OS state
{ .name = "power", .gpio = 1 << 0 }, // on back
},
.leds = {
{ .name = "diag", .gpio = 1 << 1, .polarity = REVERSE }, // actual name ready
},
.platform_init = bcm4780_init,
},
/* D-Link */
[DIR130] = {
.name = "D-Link DIR-130",
.buttons = {
{ .name = "reset", .gpio = 1 << 3},
{ .name = "reserved", .gpio = 1 << 7},
},
.leds = {
{ .name = "diag", .gpio = 1 << 0},
{ .name = "blue", .gpio = 1 << 6},
},
},
[DIR330] = {
.name = "D-Link DIR-330",
.buttons = {
{ .name = "reset", .gpio = 1 << 3},
{ .name = "reserved", .gpio = 1 << 7},
},
.leds = {
{ .name = "diag", .gpio = 1 << 0},
{ .name = "usb", .gpio = 1 << 4},
{ .name = "blue", .gpio = 1 << 6},
},
},
};
static struct platform_t __init *platform_detect(void)
{
char *boardnum, *boardtype, *buf;
boardnum = getvar("boardnum");
boardtype = getvar("boardtype");
if (strcmp(getvar("nvram_type"), "cfe") == 0)
return &platforms[WGT634U];
if (strncmp(getvar("model_no"), "WL700",5) == 0)
return &platforms[WL700GE];
if (strncmp(getvar("pmon_ver"), "CFE", 3) == 0) {
/* CFE based - newer hardware */
if (!strcmp(boardnum, "42")) { /* Linksys */
if (!strcmp(boardtype, "0x478") && !strcmp(getvar("cardbus"), "1"))
return &platforms[WRT350N];
if (!strcmp(boardtype, "0x0101") && !strcmp(getvar("boot_ver"), "v3.6"))
return &platforms[WRT54G3G];
if (!strcmp(getvar("et1phyaddr"),"5") && !strcmp(getvar("et1mdcport"), "1"))
return &platforms[WRTSL54GS];
/* default to WRT54G */
return &platforms[WRT54G];
}
if (!strcmp(boardnum, "45")) { /* ASUS */
if (!strcmp(boardtype,"0x042f"))
return &platforms[WL500GP];
else if (!strcmp(boardtype,"0x0472"))
return &platforms[WL500W];
else
return &platforms[WL500GD];
}
if (!strcmp(boardnum, "10496"))
return &platforms[USR5461];
/* D-Link */
if (!strcmp(getvar("model_name"), "DIR-130"))
return &platforms[DIR130];
if (!strcmp(getvar("model_name"), "DIR-330"))
return &platforms[DIR330];
} else { /* PMON based - old stuff */
/* Dell TrueMobile 2300 */
if (!strcmp(getvar("ModelId"),"WX-5565"))
return &platforms[TM2300];
if ((simple_strtoul(getvar("GemtekPmonVer"), NULL, 0) == 9) &&
(simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 30)) {
if (!strncmp(getvar("ModelId"),"WE800G", 6))
return &platforms[WE800G];
else
return &platforms[WR850GV1];
}
if (!strncmp(boardtype, "bcm94710dev", 11)) {
if (!strcmp(boardnum, "42"))
return &platforms[WRT54GV1];
if (simple_strtoul(boardnum, NULL, 0) == 2)
return &platforms[WAP54GV1];
}
if (!strncmp(getvar("hardware_version"), "WL500-", 6))
return &platforms[WL500G];
if (!strncmp(getvar("hardware_version"), "WL300-", 6)) {
/* Either WL-300g or WL-HDD, do more extensive checks */
if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
(simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 1))
return &platforms[WLHDD];
if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
(simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 10))
return &platforms[WL300G];
}
/* unknown asus stuff, probably bcm4702 */
if (!strncmp(boardnum, "asusX", 5))
return &platforms[ASUS_4702];
}
if ((buf = (nvram_get("melco_id") ?: nvram_get("buffalo_id")))) {
/* Buffalo hardware, check id for specific hardware matches */
if (!strcmp(buf, "29bb0332"))
return &platforms[WBR2_G54];
if (!strcmp(buf, "29129"))
return &platforms[WLA2_G54L];
if (!strcmp(buf, "30189"))
return &platforms[WHR_HP_G54];
if (!strcmp(buf, "30182"))
return &platforms[WHR_G54S];
if (!strcmp(buf, "290441dd"))
return &platforms[WHR2_A54G54];
if (!strcmp(buf, "31120"))
return &platforms[WZR_G300N];
if (!strcmp(buf, "30083"))
return &platforms[WZR_RS_G54];
if (!strcmp(buf, "30103"))
return &platforms[WZR_RS_G54HP];
}
if (buf || !strcmp(boardnum, "00")) {/* probably buffalo */
if (!strncmp(boardtype, "bcm94710ap", 10))
return &platforms[BUFFALO_UNKNOWN_4710];
else
return &platforms[BUFFALO_UNKNOWN];
}
if (!strcmp(getvar("CFEver"), "MotoWRv203") ||
!strcmp(getvar("MOTO_BOARD_TYPE"), "WR_FEM1")) {
return &platforms[WR850GV2V3];
}
if (!strcmp(boardnum, "44")) { /* Trendware TEW-411BRP+ */
return &platforms[TEW411BRPP];
}
if (!strncmp(boardnum, "04FN52", 6)) /* SimpleTech SimpleShare */
return &platforms[STI_NAS];
/* not found */
return NULL;
}
static void register_buttons(struct button_t *b)
{
for (; b->name; b++)
platform.button_mask |= b->gpio;
platform.button_mask &= ~gpiomask;
gpio_outen(platform.button_mask, 0);
gpio_control(platform.button_mask, 0);
platform.button_polarity = gpio_in() & platform.button_mask;
gpio_intpolarity(platform.button_mask, platform.button_polarity);
gpio_intmask(platform.button_mask, platform.button_mask);
gpio_set_irqenable(1, button_handler);
}
static void unregister_buttons(struct button_t *b)
{
gpio_intmask(platform.button_mask, 0);
gpio_set_irqenable(0, button_handler);
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
static void hotplug_button(struct work_struct *work)
{
struct event_t *event = container_of(work, struct event_t, wq);
#else
static void hotplug_button(struct event_t *event)
{
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
call_usermodehelper (event->argv[0], event->argv, event->envp, 1);
#else
call_usermodehelper (event->argv[0], event->argv, event->envp);
#endif
kfree(event);
}
static irqreturn_t button_handler(int irq, void *dev_id, struct pt_regs *regs)
{
struct button_t *b;
u32 in, changed;
in = gpio_in() & platform.button_mask;
gpio_intpolarity(platform.button_mask, in);
changed = platform.button_polarity ^ in;
platform.button_polarity = in;
changed &= ~gpio_outen(0, 0);
for (b = platform.buttons; b->name; b++) {
struct event_t *event;
if (!(b->gpio & changed)) continue;
b->pressed ^= 1;
if ((event = (struct event_t *)kmalloc (sizeof(struct event_t), GFP_ATOMIC))) {
int i;
char *scratch = event->buf;
i = 0;
event->argv[i++] = hotplug_path;
event->argv[i++] = "button";
event->argv[i] = 0;
i = 0;
event->envp[i++] = "HOME=/";
event->envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
event->envp[i++] = scratch;
scratch += sprintf (scratch, "ACTION=%s", b->pressed?"pressed":"released") + 1;
event->envp[i++] = scratch;
scratch += sprintf (scratch, "BUTTON=%s", b->name) + 1;
event->envp[i++] = scratch;
scratch += sprintf (scratch, "SEEN=%ld", (jiffies - b->seen)/HZ) + 1;
event->envp[i] = 0;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
INIT_WORK(&event->wq, (void *)(void *)hotplug_button);
#else
INIT_WORK(&event->wq, (void *)(void *)hotplug_button, (void *)event);
#endif
schedule_work(&event->wq);
}
b->seen = jiffies;
}
return IRQ_HANDLED;
}
static void register_leds(struct led_t *l)
{
struct proc_dir_entry *p;
u32 mask = 0;
u32 val = 0;
leds = proc_mkdir("led", diag);
if (!leds)
return;
for(; l->name; l++) {
if (l->gpio & gpiomask)
continue;
if (l->gpio & GPIO_TYPE_EXTIF) {
l->state = 0;
set_led_extif(l);
} else {
mask |= l->gpio;
val |= (l->polarity == NORMAL)?0:l->gpio;
}
if ((p = create_proc_entry(l->name, S_IRUSR, leds))) {
l->proc.type = PROC_LED;
l->proc.ptr = l;
p->data = (void *) &l->proc;
p->proc_fops = &diag_proc_fops;
}
}
gpio_outen(mask, mask);
gpio_control(mask, 0);
gpio_out(mask, val);
}
static void unregister_leds(struct led_t *l)
{
for(; l->name; l++)
remove_proc_entry(l->name, leds);
remove_proc_entry("led", diag);
}
static void set_led_extif(struct led_t *led)
{
gpio_set_extif(led->gpio, led->state);
}
static void led_flash(unsigned long dummy) {
struct led_t *l;
u32 mask = 0;
u8 extif_blink = 0;
for (l = platform.leds; l->name; l++) {
if (l->flash) {
if (l->gpio & GPIO_TYPE_EXTIF) {
extif_blink = 1;
l->state = !l->state;
set_led_extif(l);
} else {
mask |= l->gpio;
}
}
}
mask &= ~gpiomask;
if (mask) {
u32 val = ~gpio_in();
gpio_outen(mask, mask);
gpio_control(mask, 0);
gpio_out(mask, val);
}
if (mask || extif_blink) {
mod_timer(&led_timer, jiffies + FLASH_TIME);
}
}
static ssize_t diag_proc_read(struct file *file, char *buf, size_t count, loff_t *ppos)
{
#ifdef LINUX_2_4
struct inode *inode = file->f_dentry->d_inode;
struct proc_dir_entry *dent = inode->u.generic_ip;
#else
struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
#endif
char *page;
int len = 0;
if ((page = kmalloc(1024, GFP_KERNEL)) == NULL)
return -ENOBUFS;
if (dent->data != NULL) {
struct prochandler_t *handler = (struct prochandler_t *) dent->data;
switch (handler->type) {
case PROC_LED: {
struct led_t * led = (struct led_t *) handler->ptr;
if (led->flash) {
len = sprintf(page, "f\n");
} else {
if (led->gpio & GPIO_TYPE_EXTIF) {
len = sprintf(page, "%d\n", led->state);
} else {
u32 in = (gpio_in() & led->gpio ? 1 : 0);
u8 p = (led->polarity == NORMAL ? 0 : 1);
len = sprintf(page, "%d\n", ((in ^ p) ? 1 : 0));
}
}
break;
}
case PROC_MODEL:
len = sprintf(page, "%s\n", platform.name);
break;
case PROC_GPIOMASK:
len = sprintf(page, "0x%04x\n", gpiomask);
break;
}
}
len += 1;
if (*ppos < len) {
len = min_t(int, len - *ppos, count);
if (copy_to_user(buf, (page + *ppos), len)) {
kfree(page);
return -EFAULT;
}
*ppos += len;
} else {
len = 0;
}
kfree(page);
return len;
}
static ssize_t diag_proc_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
{
#ifdef LINUX_2_4
struct inode *inode = file->f_dentry->d_inode;
struct proc_dir_entry *dent = inode->u.generic_ip;
#else
struct proc_dir_entry *dent = PDE(file->f_dentry->d_inode);
#endif
char *page;
int ret = -EINVAL;
if ((page = kmalloc(count + 1, GFP_KERNEL)) == NULL)
return -ENOBUFS;
if (copy_from_user(page, buf, count)) {
kfree(page);
return -EINVAL;
}
page[count] = 0;
if (dent->data != NULL) {
struct prochandler_t *handler = (struct prochandler_t *) dent->data;
switch (handler->type) {
case PROC_LED: {
struct led_t *led = (struct led_t *) handler->ptr;
int p = (led->polarity == NORMAL ? 0 : 1);
if (page[0] == 'f') {
led->flash = 1;
led_flash(0);
} else {
led->flash = 0;
if (led->gpio & GPIO_TYPE_EXTIF) {
led->state = p ^ ((page[0] == '1') ? 1 : 0);
set_led_extif(led);
} else {
gpio_outen(led->gpio, led->gpio);
gpio_control(led->gpio, 0);
gpio_out(led->gpio, ((p ^ (page[0] == '1')) ? led->gpio : 0));
}
}
break;
}
case PROC_GPIOMASK:
gpiomask = simple_strtoul(page, NULL, 0);
if (platform.buttons) {
unregister_buttons(platform.buttons);
register_buttons(platform.buttons);
}
if (platform.leds) {
unregister_leds(platform.leds);
register_leds(platform.leds);
}
break;
}
ret = count;
}
kfree(page);
return ret;
}
static int __init diag_init(void)
{
static struct proc_dir_entry *p;
static struct platform_t *detected;
detected = platform_detect();
if (!detected) {
printk(MODULE_NAME ": Router model not detected.\n");
return -ENODEV;
}
memcpy(&platform, detected, sizeof(struct platform_t));
printk(MODULE_NAME ": Detected '%s'\n", platform.name);
if (platform.platform_init != NULL) {
platform.platform_init();
}
if (!(diag = proc_mkdir("diag", NULL))) {
printk(MODULE_NAME ": proc_mkdir on /proc/diag failed\n");
return -EINVAL;
}
if ((p = create_proc_entry("model", S_IRUSR, diag))) {
p->data = (void *) &proc_model;
p->proc_fops = &diag_proc_fops;
}
if ((p = create_proc_entry("gpiomask", S_IRUSR | S_IWUSR, diag))) {
p->data = (void *) &proc_gpiomask;
p->proc_fops = &diag_proc_fops;
}
if (platform.buttons)
register_buttons(platform.buttons);
if (platform.leds)
register_leds(platform.leds);
return 0;
}
static void __exit diag_exit(void)
{
del_timer(&led_timer);
if (platform.buttons)
unregister_buttons(platform.buttons);
if (platform.leds)
unregister_leds(platform.leds);
remove_proc_entry("model", diag);
remove_proc_entry("gpiomask", diag);
remove_proc_entry("diag", NULL);
}
module_init(diag_init);
module_exit(diag_exit);
MODULE_AUTHOR("Mike Baker, Felix Fietkau / OpenWrt.org");
MODULE_LICENSE("GPL");