openwrt/package/linux/kernel-source/drivers/net/diag/diag_led.c

   1 /*
   2  * diag_led.c - replacement diag module
   3  *
   4  * Copyright (C) 2004 Mike Baker,
   5  *                    Imre Kaloz <kaloz@dune.hu>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20  *
  21  * $Id$
  22  */
  23
  24 /*
  25  * ChangeLog:
  26  * 2004/03/28 initial release
  27  * 2004/08/26 asus & buffalo support added
  28  * 2005/03/14 asus wl-500g deluxe and buffalo v2 support added
  29  * 2005/04/13 added licensing informations
  30  * 2005/04/18 base reset polarity off initial readings
  31  */
  32
  33 #include <linux/module.h>
  34 #include <linux/init.h>
  35 #include <linux/kernel.h>
  36 #include <linux/sysctl.h>
  37 #include <asm/io.h>
  38 #include <typedefs.h>
  39 #include <bcm4710.h>
  40 #include <sbutils.h>
  41
  42 extern char * nvram_get(const char *name);
  43 static void *sbh;
  44
  45 // v2.x - - - - -
  46 #define DIAG_GPIO (1<<1)
  47 #define DMZ_GPIO  (1<<7)
  48
  49 static void set_gpio(uint32 mask, uint32 value) {
  50         sb_gpiocontrol(sbh,mask,0);
  51         sb_gpioouten(sbh,mask,mask);
  52         sb_gpioout(sbh,mask,value);
  53 }
  54
  55 static void v2_set_diag(u8 state) {
  56         set_gpio(DIAG_GPIO,state);
  57 }
  58 static void v2_set_dmz(u8 state) {
  59         set_gpio(DMZ_GPIO,state);
  60 }
  61
  62 // v1.x - - - - -
  63 #define LED_DIAG   0x13
  64 #define LED_DMZ    0x12
  65
  66 static void v1_set_diag(u8 state) {
  67         if (!state) {
  68                 *(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DIAG)=0xFF;
  69         } else {
  70                 *(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DIAG);
  71         }
  72 }
  73 static void v1_set_dmz(u8 state) {
  74         if (!state) {
  75                 *(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DMZ)=0xFF;
  76         } else {
  77                 *(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DMZ);
  78         }
  79 }
  80
  81 // - - - - -
  82 static void ignore(u8 ignored) {};
  83
  84 // - - - - -
  85 #define BIT_DMZ         0x01
  86 #define BIT_DIAG        0x04
  87
  88 void (*set_diag)(u8 state);
  89 void (*set_dmz)(u8 state);
  90
  91 static unsigned int diag = 0;
  92
  93 static void diag_change()
  94 {
  95         set_diag(0xFF); // off
  96         set_dmz(0xFF); // off
  97
  98         if(diag & BIT_DIAG)
  99                 set_diag(0x00); // on
 100         if(diag & BIT_DMZ)
 101                 set_dmz(0x00); // on
 102 }
 103
 104 static int proc_diag(ctl_table *table, int write, struct file *filp,
 105                 void *buffer, size_t *lenp)
 106 {
 107         int r;
 108         r = proc_dointvec(table, write, filp, buffer, lenp);
 109         if (write && !r) {
 110                 diag_change();
 111         }
 112         return r;
 113 }
 114
 115 // - - - - -
 116 static unsigned char reset_gpio = 0;
 117 static unsigned char reset_polarity = 0;
 118 static unsigned int reset = 0;
 119
 120 static int proc_reset(ctl_table *table, int write, struct file *filp,
 121                 void *buffer, size_t *lenp)
 122 {
 123
 124         if (reset_gpio) {
 125                 sb_gpiocontrol(sbh,reset_gpio,reset_gpio);
 126                 sb_gpioouten(sbh,reset_gpio,0);
 127                 reset=!(sb_gpioin(sbh)&reset_gpio);
 128
 129                 if (reset_polarity) reset=!reset;
 130         } else {
 131                 reset=0;
 132         }
 133
 134         return proc_dointvec(table, write, filp, buffer, lenp);
 135 }
 136
 137 // - - - - -
 138 static struct ctl_table_header *diag_sysctl_header;
 139
 140 static ctl_table sys_diag[] = {
 141          {
 142            ctl_name: 2000,
 143            procname: "diag",
 144            data: &diag,
 145            maxlen: sizeof(diag),
 146            mode: 0644,
 147            proc_handler: proc_diag
 148          },
 149          {
 150            ctl_name: 2001,
 151            procname: "reset",
 152            data: &reset,
 153            maxlen: sizeof(reset),
 154            mode: 0444,
 155            proc_handler: proc_reset
 156          },
 157          { 0 }
 158 };
 159
 160 static int __init diag_init()
 161 {
 162         char *buf;
 163         u32 board_type;
 164         sbh = sb_kattach();
 165         sb_gpiosetcore(sbh);
 166
 167         board_type = sb_boardtype(sbh);
 168         printk(KERN_INFO "diag boardtype: %08x\n",board_type);
 169
 170         set_diag=ignore;
 171         set_dmz=ignore;
 172
 173         if ((board_type & 0xf00) == 0x400) {
 174                 buf=nvram_get("boardtype")?:"";
 175                 if (!strcmp(buf,"bcm94710dev")) {
 176                         buf=nvram_get("boardnum")?:"";
 177                         if (!strcmp(buf,"42")) {
 178                                 // wrt54g v1.x
 179                                 set_diag=v1_set_diag;
 180                                 set_dmz=v1_set_dmz;
 181                                 reset_gpio=(1<<6);
 182                         }
 183                         if (!strcmp(buf,"asusX")) {
 184                                 //asus wl-500g
 185                                 reset_gpio=(1<<6);
 186                         }
 187                 }
 188                 if (!strcmp(buf,"bcm94710ap")) {
 189                         buf=nvram_get("boardnum")?:"";
 190                         if (!strcmp(buf,"42")) {
 191                                 // buffalo
 192                                 set_dmz=v2_set_dmz;
 193                                 reset_gpio=(1<<4);
 194                         }
 195                         if (!strcmp(buf,"44")) {
 196                                 //dell truemobile
 197                                 set_dmz=v2_set_dmz;
 198                                 reset_gpio=(1<<0);
 199                         }
 200                 }
 201         } else {
 202                 buf=nvram_get("boardnum")?:"";
 203                 if (!strcmp(buf,"42")) {
 204                         //linksys
 205                         set_diag=v2_set_diag;
 206                         set_dmz=v2_set_dmz;
 207                         reset_gpio=(1<<6);
 208                 }
 209                 if (!strcmp(buf,"44")) {
 210                         //motorola
 211                         reset_gpio=(1<<5);
 212                 }
 213                 if (!strcmp(buf,"00")) {
 214                         //buffalo
 215                         reset_gpio=(1<<7);
 216                 }
 217                 if (!strcmp(buf,"45")) {
 218                         //wl-500g deluxe
 219                         reset_gpio=(1<<6);
 220                 }
 221         }
 222
 223
 224         sb_gpiocontrol(sbh,reset_gpio,reset_gpio);
 225         sb_gpioouten(sbh,reset_gpio,0);
 226         reset_polarity=!(sb_gpioin(sbh)&reset_gpio);
 227
 228         diag_sysctl_header = register_sysctl_table(sys_diag, 0);
 229         diag_change();
 230
 231         return 0;
 232 }
 233
 234 static void __exit diag_exit()
 235 {
 236         unregister_sysctl_table(diag_sysctl_header);
 237 }
 238
 239 EXPORT_NO_SYMBOLS;
 240 MODULE_AUTHOR("openwrt.org");
 241 MODULE_LICENSE("GPL");
 242
 243 module_init(diag_init);
 244 module_exit(diag_exit);