| 1 | /*
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| 2 | * diag_led.c - led and reset button driver for broadcom routers
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| 3 | *
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| 4 | * Copyright (C) 2004-2006 Mike Baker,
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| 5 | * Imre Kaloz <kaloz@dune.hu>,
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| 6 | * Felix Fietkau <nbd@openwrt.org>
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| 7 | *
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| 8 | * This program is free software; you can redistribute it and/or
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| 9 | * modify it under the terms of the GNU General Public License
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| 10 | * as published by the Free Software Foundation; either version 2
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| 11 | * of the License, or (at your option) any later version.
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| 12 | *
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| 13 | * This program is distributed in the hope that it will be useful,
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 16 | * GNU General Public License for more details.
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| 17 | *
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| 18 | * You should have received a copy of the GNU General Public License
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| 19 | * along with this program; if not, write to the Free Software
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| 20 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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| 21 | *
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| 22 | */
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| 23 |
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| 24 | /*
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| 25 | * ChangeLog:
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| 26 | * 2004/03/28 initial release
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| 27 | * 2004/08/26 asus & buffalo support added
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| 28 | * 2005/03/14 asus wl-500g deluxe and buffalo v2 support added
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| 29 | * 2005/04/13 added licensing informations
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| 30 | * 2005/04/18 base reset polarity off initial readings
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| 31 | */
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| 32 |
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| 33 | #include <linux/module.h>
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| 34 | #include <linux/init.h>
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| 35 | #include <linux/kernel.h>
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| 36 | #include <linux/sysctl.h>
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| 37 | #include <asm/io.h>
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| 38 | #include <typedefs.h>
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| 39 | #include <bcmdevs.h>
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| 40 | #include <sbutils.h>
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| 41 |
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| 42 | extern char * nvram_get(const char *name);
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| 43 | static void *sbh;
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| 44 |
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| 45 | // v2.x - - - - -
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| 46 | #define BITS(n) ((1 << n) - 1)
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| 47 | #define ISSET(n,b) ((n & (1 << b)) ? 1 : 0)
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| 48 | #define DIAG_GPIO (1<<1)
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| 49 | #define AOSS_GPIO (1<<6)
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| 50 | #define DMZ_GPIO (1<<7)
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| 51 | #define SES_GPIO ((1 << 2) | (1 << 3) | (1 << 5))
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| 52 |
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| 53 | static void set_gpio(uint32 mask, uint32 value) {
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| 54 | sb_gpiocontrol(sbh,mask,0);
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| 55 | sb_gpioouten(sbh,mask,mask);
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| 56 | sb_gpioout(sbh,mask,value);
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| 57 | }
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| 58 |
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| 59 | static void v2_set_diag(u8 state) {
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| 60 | set_gpio(DIAG_GPIO,state);
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| 61 | }
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| 62 | static void v2_set_dmz(u8 state) {
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| 63 | set_gpio(DMZ_GPIO,state);
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| 64 | }
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| 65 | static void v2_set_aoss(u8 state) {
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| 66 | set_gpio(AOSS_GPIO,state);
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| 67 | }
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| 68 | static void v2_set_ses(u8 state) {
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| 69 | set_gpio(SES_GPIO, (ISSET(state, 0) << 2) | (ISSET(state, 1) << 3) | (ISSET(state, 2) << 5));
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| 70 | }
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| 71 |
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| 72 | // v1.x - - - - -
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| 73 | #define LED_DIAG 0x13
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| 74 | #define LED_DMZ 0x12
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| 75 |
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| 76 | static void v1_set_diag(u8 state) {
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| 77 | if (!state) {
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| 78 | *(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DIAG)=0xFF;
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| 79 | } else {
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| 80 | *(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DIAG);
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| 81 | }
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| 82 | }
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| 83 | static void v1_set_dmz(u8 state) {
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| 84 | if (!state) {
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| 85 | *(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DMZ)=0xFF;
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| 86 | } else {
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| 87 | *(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DMZ);
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| 88 | }
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| 89 | }
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| 90 |
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| 91 | // - - - - -
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| 92 | static void ignore(u8 ignored) {};
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| 93 |
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| 94 | // - - - - -
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| 95 | #define BIT_DMZ (1 << 0)
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| 96 | #define BIT_DIAG (1 << 2)
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| 97 | #define BIT_SES (BITS(3) << 3)
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| 98 |
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| 99 | void (*set_diag)(u8 state);
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| 100 | void (*set_dmz)(u8 state);
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| 101 | void (*set_ses)(u8 state);
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| 102 |
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| 103 | static unsigned int diag_reverse = 1;
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| 104 | static unsigned int ses_reverse = 1;
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| 105 | static unsigned int diag = 0;
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| 106 |
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| 107 | static void diag_change()
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| 108 | {
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| 109 | set_diag(diag_reverse ? 0xFF : 0x00); // off
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| 110 | set_dmz(diag_reverse ? 0xFF : 0x00); // off
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| 111 | set_ses(ses_reverse ? 0xFF : 0x00); // off
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| 112 |
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| 113 | if(diag & BIT_DIAG)
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| 114 | set_diag(diag_reverse ? 0x00 : 0xFF); // on
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| 115 | if(diag & BIT_DMZ)
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| 116 | set_dmz(diag_reverse ? 0x00 : 0xFF); // on
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| 117 | if(diag & BIT_SES)
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| 118 | set_ses(((ses_reverse ? ~diag : diag) >> 3) & BITS(3));
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| 119 | }
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| 120 |
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| 121 | static int proc_diag(ctl_table *table, int write, struct file *filp,
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| 122 | void *buffer, size_t *lenp)
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| 123 | {
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| 124 | int r;
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| 125 | r = proc_dointvec(table, write, filp, buffer, lenp);
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| 126 | if (write && !r) {
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| 127 | diag_change();
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| 128 | }
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| 129 | return r;
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| 130 | }
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| 131 |
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| 132 | // - - - - -
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| 133 | static unsigned char reset_gpio = 0;
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| 134 | static unsigned char reset_polarity = 0;
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| 135 | static unsigned int reset = 0;
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| 136 | static unsigned char button_gpio = 0;
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| 137 | static unsigned char button_polarity = 0;
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| 138 | static unsigned int button = 0;
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| 139 |
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| 140 |
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| 141 | static int read_gpio(int gpio, int polarity)
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| 142 | {
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| 143 | int res;
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| 144 |
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| 145 | if (gpio) {
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| 146 | sb_gpiocontrol(sbh,gpio,gpio);
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| 147 | sb_gpioouten(sbh,gpio,0);
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| 148 | res=!(sb_gpioin(sbh)&gpio);
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| 149 |
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| 150 | return (polarity ? !res : res);
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| 151 | }
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| 152 |
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| 153 | return 0;
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| 154 | }
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| 155 |
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| 156 | static int proc_reset(ctl_table *table, int write, struct file *filp,
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| 157 | void *buffer, size_t *lenp)
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| 158 | {
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| 159 | reset = read_gpio(reset_gpio, reset_polarity);
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| 160 |
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| 161 | return proc_dointvec(table, write, filp, buffer, lenp);
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| 162 | }
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| 163 |
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| 164 | static int proc_button(ctl_table *table, int write, struct file *filp,
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| 165 | void *buffer, size_t *lenp)
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| 166 | {
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| 167 | button = read_gpio(button_gpio, button_polarity);
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| 168 |
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| 169 | return proc_dointvec(table, write, filp, buffer, lenp);
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| 170 | }
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| 171 |
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| 172 | // - - - - -
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| 173 | static struct ctl_table_header *diag_sysctl_header;
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| 174 |
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| 175 | static ctl_table sys_diag[] = {
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| 176 | {
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| 177 | ctl_name: 2000,
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| 178 | procname: "diag",
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| 179 | data: &diag,
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| 180 | maxlen: sizeof(diag),
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| 181 | mode: 0644,
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| 182 | proc_handler: proc_diag
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| 183 | },
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| 184 | {
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| 185 | ctl_name: 2001,
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| 186 | procname: "reset",
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| 187 | data: &reset,
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| 188 | maxlen: sizeof(reset),
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| 189 | mode: 0444,
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| 190 | proc_handler: proc_reset
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| 191 | },
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| 192 | {
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| 193 | ctl_name: 2002,
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| 194 | procname: "button",
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| 195 | data: &button,
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| 196 | maxlen: sizeof(button),
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| 197 | mode: 0444,
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| 198 | proc_handler: proc_button
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| 199 | },
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| 200 | { 0 }
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| 201 | };
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| 202 |
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| 203 | static int __init diag_init()
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| 204 | {
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| 205 | char *buf;
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| 206 | u32 board_type;
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| 207 | sbh = sb_kattach();
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| 208 | sb_gpiosetcore(sbh);
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| 209 |
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| 210 | board_type = sb_boardtype(sbh);
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| 211 |
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| 212 | set_diag=ignore;
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| 213 | set_dmz=ignore;
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| 214 | set_ses=ignore;
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| 215 |
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| 216 | buf=nvram_get("pmon_ver") ?: "";
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| 217 | if (((board_type & 0xf00) == 0x400) && (strncmp(buf, "CFE", 3) != 0)) {
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| 218 | buf=nvram_get("boardtype")?:"";
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| 219 | if (!strcmp(buf,"bcm94710dev")) {
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| 220 | buf=nvram_get("boardnum")?:"";
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| 221 | if (!strcmp(buf,"42")) {
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| 222 | // wrt54g v1.x
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| 223 | set_diag=v1_set_diag;
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| 224 | set_dmz=v1_set_dmz;
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| 225 | reset_gpio=(1<<6);
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| 226 | }
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| 227 | if (!strcmp(buf,"asusX")) {
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| 228 | //asus wl-500g
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| 229 | reset_gpio=(1<<6);
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| 230 | }
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| 231 | }
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| 232 | if (!strcmp(buf,"bcm94710ap")) {
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| 233 | buf=nvram_get("boardnum")?:"";
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| 234 | if (!strcmp(buf,"42")) {
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| 235 | // buffalo
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| 236 | set_dmz=v2_set_dmz;
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| 237 | reset_gpio=(1<<4);
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| 238 | }
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| 239 | if (!strcmp(buf,"44")) {
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| 240 | //dell truemobile
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| 241 | set_dmz=v2_set_dmz;
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| 242 | reset_gpio=(1<<0);
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| 243 | }
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| 244 | }
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| 245 | } else {
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| 246 | buf=nvram_get("boardnum")?:"";
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| 247 | if (!strcmp(buf,"42")) {
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| 248 | //linksys
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| 249 | set_diag=v2_set_diag;
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| 250 | set_dmz=v2_set_dmz;
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| 251 | set_ses=v2_set_ses;
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| 252 |
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| 253 | reset_gpio=(1<<6);
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| 254 | button_gpio=(1<<4);
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| 255 |
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| 256 | if (!strcmp((nvram_get("boardtype")?:""), "0x0101")) // WRT54G3G
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| 257 | ses_reverse = 0;
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| 258 | else
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| 259 | ses_reverse = 1;
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| 260 | }
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| 261 | if (!strcmp(buf,"44")) {
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| 262 | //motorola
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| 263 | reset_gpio=(1<<5);
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| 264 | }
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| 265 | if (!strcmp(buf,"00")) {
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| 266 | //buffalo
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| 267 | diag_reverse = 0;
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| 268 | set_dmz=v2_set_diag;
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| 269 | set_diag=v2_set_aoss;
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| 270 | reset_gpio=(1<<7);
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| 271 | }
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| 272 | if (!strcmp(buf,"45")) {
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| 273 | buf=nvram_get("boardtype")?:"";
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| 274 | if (!strcmp(buf,"0x042f")) {
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| 275 | //wl-500g premium
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| 276 | printk("diag: Asus WL500g premium found\n");
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| 277 | // special button reset_gpio=(1<<4);
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| 278 | reset_gpio=(1<<0);
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| 279 | } else {
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| 280 | //wl-500g deluxe
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| 281 | printk("diag: Asus WL500g deluxe found\n");
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| 282 | reset_gpio=(1<<6);
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| 283 | }
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| 284 | }
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| 285 | }
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| 286 |
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| 287 | sb_gpiocontrol(sbh,reset_gpio,reset_gpio);
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| 288 | sb_gpioouten(sbh,reset_gpio,0);
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| 289 | reset_polarity=!(sb_gpioin(sbh)&reset_gpio);
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| 290 |
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| 291 | if (button_gpio) {
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| 292 | sb_gpiocontrol(sbh,button_gpio,button_gpio);
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| 293 | sb_gpioouten(sbh,button_gpio,0);
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| 294 | button_polarity=!(sb_gpioin(sbh)&button_gpio);
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| 295 | } else {
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| 296 | // don't create /proc/button
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| 297 | sys_diag[2].ctl_name = 0;
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| 298 | }
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| 299 |
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| 300 | diag_sysctl_header = register_sysctl_table(sys_diag, 0);
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| 301 | diag_change();
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| 302 |
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| 303 | return 0;
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| 304 | }
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| 305 |
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| 306 | static void __exit diag_exit()
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| 307 | {
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| 308 | unregister_sysctl_table(diag_sysctl_header);
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| 309 | }
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| 310 |
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| 311 | EXPORT_NO_SYMBOLS;
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| 312 | MODULE_AUTHOR("openwrt.org");
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| 313 | MODULE_LICENSE("GPL");
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| 314 |
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| 315 | module_init(diag_init);
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| 316 | module_exit(diag_exit);
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