target/linux/package/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  * 2006/02/07 motorola wa840g/we800g support added
  32  */
  33
  34 #include <linux/module.h>
  35 #include <linux/init.h>
  36 #include <linux/kernel.h>
  37 #include <linux/sysctl.h>
  38 #include <asm/io.h>
  39 #include <typedefs.h>
  40 #include <osl.h>
  41 #include <bcmdevs.h>
  42 #include <sbutils.h>
  43
  44 extern char * nvram_get(const char *name);
  45 static void *sbh;
  46
  47 // v2.x - - - - -
  48 #define DIAG_GPIO (1<<1)
  49 #define DMZ_GPIO  (1<<7)
  50
  51 static void set_gpio(uint32 mask, uint32 value) {
  52         sb_gpiocontrol(sbh,mask, 0, GPIO_DRV_PRIORITY);
  53         sb_gpioouten(sbh,mask,mask,GPIO_DRV_PRIORITY);
  54         sb_gpioout(sbh,mask,value,GPIO_DRV_PRIORITY);
  55 }
  56
  57 static void v2_set_diag(u8 state) {
  58         set_gpio(DIAG_GPIO,state);
  59 }
  60 static void v2_set_dmz(u8 state) {
  61         set_gpio(DMZ_GPIO,state);
  62 }
  63
  64 // v1.x - - - - -
  65 #define LED_DIAG   0x13
  66 #define LED_DMZ    0x12
  67
  68 static void v1_set_diag(u8 state) {
  69         if (!state) {
  70                 *(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DIAG)=0xFF;
  71         } else {
  72                 *(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DIAG);
  73         }
  74 }
  75 static void v1_set_dmz(u8 state) {
  76         if (!state) {
  77                 *(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DMZ)=0xFF;
  78         } else {
  79                 *(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DMZ);
  80         }
  81 }
  82
  83 // - - - - -
  84 static void ignore(u8 ignored) {};
  85
  86 // - - - - -
  87 #define BIT_DMZ         0x01
  88 #define BIT_DIAG        0x04
  89
  90 void (*set_diag)(u8 state);
  91 void (*set_dmz)(u8 state);
  92
  93 static unsigned int diag = 0;
  94
  95 static void diag_change()
  96 {
  97         set_diag(0xFF); // off
  98         set_dmz(0xFF); // off
  99
 100         if(diag & BIT_DIAG)
 101                 set_diag(0x00); // on
 102         if(diag & BIT_DMZ)
 103                 set_dmz(0x00); // on
 104 }
 105
 106 static int proc_diag(ctl_table *table, int write, struct file *filp,
 107                 void *buffer, size_t *lenp)
 108 {
 109         int r;
 110         r = proc_dointvec(table, write, filp, buffer, lenp);
 111         if (write && !r) {
 112                 diag_change();
 113         }
 114         return r;
 115 }
 116
 117 // - - - - -
 118 static unsigned char reset_gpio = 0;
 119 static unsigned char reset_polarity = 0;
 120 static unsigned int reset = 0;
 121
 122 static int proc_reset(ctl_table *table, int write, struct file *filp,
 123                 void *buffer, size_t *lenp)
 124 {
 125
 126         if (reset_gpio) {
 127                 sb_gpiocontrol(sbh,reset_gpio,reset_gpio,GPIO_DRV_PRIORITY);
 128                 sb_gpioouten(sbh,reset_gpio,0,GPIO_DRV_PRIORITY);
 129                 reset=!(sb_gpioin(sbh)&reset_gpio);
 130
 131                 if (reset_polarity) reset=!reset;
 132         } else {
 133                 reset=0;
 134         }
 135
 136         return proc_dointvec(table, write, filp, buffer, lenp);
 137 }
 138
 139 // - - - - -
 140 static struct ctl_table_header *diag_sysctl_header;
 141
 142 static ctl_table sys_diag[] = {
 143          {
 144            ctl_name: 2000,
 145            procname: "diag",
 146            data: &diag,
 147            maxlen: sizeof(diag),
 148            mode: 0644,
 149            proc_handler: proc_diag
 150          },
 151          {
 152            ctl_name: 2001,
 153            procname: "reset",
 154            data: &reset,
 155            maxlen: sizeof(reset),
 156            mode: 0444,
 157            proc_handler: proc_reset
 158          },
 159          { 0 }
 160 };
 161
 162 static int __init diag_init()
 163 {
 164         char *buf;
 165         u32 board_type;
 166         sbh = sb_kattach();
 167         sb_gpiosetcore(sbh);
 168
 169         board_type = sb_boardtype(sbh);
 170         printk(KERN_INFO "diag boardtype: %08x\n",board_type);
 171
 172         set_diag=ignore;
 173         set_dmz=ignore;
 174
 175         buf=nvram_get("pmon_ver") ?: "";
 176         if (((board_type & 0xf00) == 0x400) && (strncmp(buf, "CFE", 3) != 0)) {
 177                 buf=nvram_get("boardtype")?:"";
 178                 if (!strcmp(buf,"bcm94710dev")) {
 179                         buf=nvram_get("boardnum")?:"";
 180                         if (!strcmp(buf,"42")) {
 181                                 // wrt54g v1.x
 182                                 set_diag=v1_set_diag;
 183                                 set_dmz=v1_set_dmz;
 184                                 reset_gpio=(1<<6);
 185                         }
 186                         if (!strcmp(buf,"asusX")) {
 187                                 //asus wl-500g
 188                                 reset_gpio=(1<<6);
 189                         }
 190                         if (!strcmp(buf,"2")) {
 191                                 //wa840g v1 / we800g v1
 192                                 reset_gpio=(1<<0);
 193                         }
 194                 }
 195                 if (!strcmp(buf,"bcm94710ap")) {
 196                         buf=nvram_get("boardnum")?:"";
 197                         if (!strcmp(buf,"42")) {
 198                                 // buffalo
 199                                 set_dmz=v2_set_dmz;
 200                                 reset_gpio=(1<<4);
 201                         }
 202                         if (!strcmp(buf,"44")) {
 203                                 //dell truemobile
 204                                 set_dmz=v2_set_dmz;
 205                                 reset_gpio=(1<<0);
 206                         }
 207                 }
 208         } else {
 209                 buf=nvram_get("boardnum")?:"";
 210                 if (!strcmp(buf,"42")) {
 211                         //linksys
 212                         set_diag=v2_set_diag;
 213                         set_dmz=v2_set_dmz;
 214                         reset_gpio=(1<<6);
 215                 }
 216                 if (!strcmp(buf,"44")) {
 217                         //motorola
 218                         reset_gpio=(1<<5);
 219                 }
 220                 if (!strcmp(buf,"00")) {
 221                         //buffalo
 222                         reset_gpio=(1<<7);
 223                 }
 224                 if (!strcmp(buf,"45")) {
 225                         //wl-500g deluxe
 226                         reset_gpio=(1<<6);
 227                 }
 228         }
 229
 230
 231         sb_gpiocontrol(sbh,reset_gpio,reset_gpio,GPIO_DRV_PRIORITY);
 232         sb_gpioouten(sbh,reset_gpio,0,GPIO_DRV_PRIORITY);
 233         reset_polarity=!(sb_gpioin(sbh)&reset_gpio);
 234
 235         diag_sysctl_header = register_sysctl_table(sys_diag, 0);
 236         diag_change();
 237
 238         return 0;
 239 }
 240
 241 static void __exit diag_exit()
 242 {
 243         unregister_sysctl_table(diag_sysctl_header);
 244 }
 245
 246 EXPORT_NO_SYMBOLS;
 247 MODULE_AUTHOR("openwrt.org");
 248 MODULE_LICENSE("GPL");
 249
 250 module_init(diag_init);
 251 module_exit(diag_exit);