target/linux/adm5120-2.6/files/drivers/leds/leds-adm5120.c

   1 /*
   2  *  $Id$
   3  *
   4  *  ADM5120 GPIO LED devices
   5  *
   6  *  Copyright (C) 2007 OpenWrt.org
   7  *  Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
   8  *
   9  *  This program is free software; you can redistribute it and/or
  10  *  modify it under the terms of the GNU General Public License
  11  *  as published by the Free Software Foundation; either version 2
  12  *  of the License, or (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, write to the
  21  *  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  22  *  Boston, MA  02110-1301, USA.
  23  *
  24  */
  25
  26 #include <linux/kernel.h>
  27 #include <linux/init.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/leds.h>
  30 #include <linux/err.h>
  31
  32 #include <linux/gpio_leds.h>
  33
  34 #include <asm/bootinfo.h>
  35 #include <asm/io.h>
  36 #include <asm/gpio.h>
  37
  38 #include <asm/mach-adm5120/adm5120_info.h>
  39
  40 #define NUM_LEDS_MAX    23
  41
  42 #define ADM5120_GPIO_xxxx       0x100   /* an unknown pin */
  43
  44 struct mach_data {
  45         unsigned long machtype;
  46         unsigned count;
  47         struct gpio_led_platform_data *data;
  48 };
  49
  50 struct adm5120_leddev {
  51         struct platform_device pdev;
  52         struct gpio_led_platform_data pdata;
  53 };
  54
  55 static int led_count = 0;
  56 static struct adm5120_leddev *led_devs[NUM_LEDS_MAX];
  57
  58 #define LED_ARRAY(n)                            \
  59 static struct gpio_led_platform_data            \
  60 n ## _leds [] __initdata =
  61
  62 #define LED_DATA(n,t,g,off,on) {                \
  63         .name = (n),                            \
  64         .trigger = (t),                         \
  65         .gpio = (g),                            \
  66         .value_off = (off),                     \
  67         .value_on = (on)                        \
  68         }
  69
  70 #define LED_STD(g,n,t)  LED_DATA((n),(t),(g), 0, 1)
  71 #define LED_INV(g,n,t)  LED_DATA((n),(t),(g), 1, 0)
  72
  73 /*
  74  * Compex boards
  75  */
  76 #if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
  77 LED_ARRAY(np27g) { /* FIXME: untested */
  78         LED_STD(ADM5120_GPIO_xxxx, "lan1",      NULL ),
  79         LED_STD(ADM5120_GPIO_xxxx, "lan2",      NULL ),
  80         LED_STD(ADM5120_GPIO_xxxx, "lan3",      NULL ),
  81         LED_STD(ADM5120_GPIO_xxxx, "lan4",      NULL ),
  82         LED_STD(ADM5120_GPIO_xxxx, "wan_cond",  NULL ),
  83         LED_STD(ADM5120_GPIO_xxxx, "wlan",      NULL ),
  84         LED_STD(ADM5120_GPIO_xxxx, "wan_act",   NULL ),
  85         LED_STD(ADM5120_GPIO_xxxx, "usb1",      NULL ),
  86         LED_STD(ADM5120_GPIO_xxxx, "usb2",      NULL ),
  87         LED_INV(ADM5120_GPIO_PIN2, "power",     NULL ),
  88         LED_STD(ADM5120_GPIO_xxxx, "diag",      NULL ),
  89 };
  90 #endif
  91
  92 #if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
  93 LED_ARRAY(np28g) { /* FIXME: untested */
  94         LED_STD(ADM5120_GPIO_xxxx, "lan1",      NULL ),
  95         LED_STD(ADM5120_GPIO_xxxx, "lan2",      NULL ),
  96         LED_STD(ADM5120_GPIO_xxxx, "lan3",      NULL ),
  97         LED_STD(ADM5120_GPIO_xxxx, "wan",       NULL ),
  98         LED_STD(ADM5120_GPIO_xxxx, "wlan",      NULL ),
  99         LED_STD(ADM5120_GPIO_xxxx, "usb1",      NULL ),
 100         LED_STD(ADM5120_GPIO_xxxx, "usb2",      NULL ),
 101         LED_STD(ADM5120_GPIO_xxxx, "usb3",      NULL ),
 102         LED_STD(ADM5120_GPIO_xxxx, "usb4",      NULL ),
 103         LED_INV(ADM5120_GPIO_PIN2, "power",     NULL ),
 104         LED_STD(ADM5120_GPIO_xxxx, "diag",      NULL ),
 105 };
 106 #endif
 107
 108 LED_ARRAY(wp54g) {
 109         LED_INV(ADM5120_GPIO_PIN2, "diag",      NULL ),
 110         LED_INV(ADM5120_GPIO_PIN6, "wlan",      NULL ),
 111         LED_INV(ADM5120_GPIO_PIN7, "wan",       NULL ),
 112         LED_INV(ADM5120_GPIO_P0L0, "lan1",      NULL ),
 113         LED_INV(ADM5120_GPIO_P1L0, "lan2",      NULL ),
 114 };
 115
 116 /*
 117  * Edimax boards
 118  */
 119 LED_ARRAY(br6104k) {
 120         LED_STD(ADM5120_GPIO_PIN0, "power",             NULL ),
 121         LED_INV(ADM5120_GPIO_P0L1, "wan_speed",         NULL ),
 122         LED_INV(ADM5120_GPIO_P0L0, "wan_lnkact",        NULL ),
 123         LED_INV(ADM5120_GPIO_P1L1, "lan1_speed",        NULL ),
 124         LED_INV(ADM5120_GPIO_P1L0, "lan1_lnkact",       NULL ),
 125         LED_INV(ADM5120_GPIO_P2L1, "lan2_speed",        NULL ),
 126         LED_INV(ADM5120_GPIO_P2L0, "lan2_lnkact",       NULL ),
 127         LED_INV(ADM5120_GPIO_P3L1, "lan3_speed",        NULL ),
 128         LED_INV(ADM5120_GPIO_P3L0, "lan3_lnkact",       NULL ),
 129         LED_INV(ADM5120_GPIO_P4L1, "lan4_speed",        NULL ),
 130         LED_INV(ADM5120_GPIO_P4L0, "lan4_lnkact",       NULL ),
 131 };
 132
 133 /*
 134  * Mikrotik boards
 135  */
 136 #if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
 137 LED_ARRAY(rb100) { /* FIXME: untested */
 138         LED_STD(ADM5120_GPIO_PIN6, "power",     NULL ),
 139         LED_STD(ADM5120_GPIO_PIN3, "user",      NULL ),
 140 };
 141 #endif
 142
 143 LED_ARRAY(rb133) {
 144         LED_STD(ADM5120_GPIO_PIN6, "power",     NULL ),
 145         LED_STD(ADM5120_GPIO_PIN5, "user",      NULL ),
 146 };
 147
 148 /*
 149  * ZyXEL boards
 150  */
 151 #if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
 152 LED_ARRAY(p334) { /* FIXME: untested */
 153         LED_INV(ADM5120_GPIO_xxxx, "power",     NULL ),
 154         LED_INV(ADM5120_GPIO_xxxx, "lan1",      NULL ),
 155         LED_INV(ADM5120_GPIO_xxxx, "lan2",      NULL ),
 156         LED_INV(ADM5120_GPIO_xxxx, "lan3",      NULL ),
 157         LED_INV(ADM5120_GPIO_xxxx, "lan4",      NULL ),
 158         LED_INV(ADM5120_GPIO_xxxx, "wan",       NULL ),
 159 };
 160 #endif
 161
 162 LED_ARRAY(p334wt) {
 163         LED_INV(ADM5120_GPIO_PIN2, "power",     NULL ),
 164         LED_INV(ADM5120_GPIO_P3L0, "lan1",      NULL ),
 165         LED_INV(ADM5120_GPIO_P2L0, "lan2",      NULL ),
 166         LED_INV(ADM5120_GPIO_P1L0, "lan3",      NULL ),
 167         LED_INV(ADM5120_GPIO_P0L0, "lan4",      NULL ),
 168         LED_INV(ADM5120_GPIO_P4L0, "wan",       NULL ),
 169         LED_INV(ADM5120_GPIO_P4L2, "wlan",      NULL ),
 170         LED_INV(ADM5120_GPIO_P2L2, "otist",     NULL ),
 171         LED_INV(ADM5120_GPIO_P1L2, "hidden",    NULL ),
 172 };
 173
 174 #if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
 175 LED_ARRAY(p335) { /* FIXME: untested */
 176         LED_INV(ADM5120_GPIO_PIN2, "power",     NULL ),
 177         LED_INV(ADM5120_GPIO_P3L0, "lan1",      NULL ),
 178         LED_INV(ADM5120_GPIO_P2L0, "lan2",      NULL ),
 179         LED_INV(ADM5120_GPIO_P1L0, "lan3",      NULL ),
 180         LED_INV(ADM5120_GPIO_P0L0, "lan4",      NULL ),
 181         LED_INV(ADM5120_GPIO_P4L0, "wan",       NULL ),
 182         LED_INV(ADM5120_GPIO_P4L2, "wlan",      NULL ),
 183         LED_INV(ADM5120_GPIO_P2L2, "otist",     NULL ),
 184         LED_INV(ADM5120_GPIO_xxxx, "usb",       NULL ),
 185 };
 186 #endif
 187
 188 /*
 189  * Generic board
 190  */
 191 LED_ARRAY(generic) {
 192 #if defined(CONFIG_LEDS_ADM5120_DIAG)
 193         LED_STD(ADM5120_GPIO_PIN0, "gpio0",     NULL ),
 194         LED_STD(ADM5120_GPIO_PIN1, "gpio1",     NULL ),
 195         LED_STD(ADM5120_GPIO_PIN2, "gpio2",     NULL ),
 196         LED_STD(ADM5120_GPIO_PIN3, "gpio3",     NULL ),
 197         LED_STD(ADM5120_GPIO_PIN4, "gpio4",     NULL ),
 198         LED_STD(ADM5120_GPIO_PIN5, "gpio5",     NULL ),
 199         LED_STD(ADM5120_GPIO_PIN6, "gpio6",     NULL ),
 200         LED_STD(ADM5120_GPIO_PIN7, "gpio7",     NULL ),
 201         LED_STD(ADM5120_GPIO_P0L0, "port0led0", NULL ),
 202         LED_STD(ADM5120_GPIO_P0L1, "port0led1", NULL ),
 203         LED_STD(ADM5120_GPIO_P0L2, "port0led2", NULL ),
 204         LED_STD(ADM5120_GPIO_P1L0, "port1led0", NULL ),
 205         LED_STD(ADM5120_GPIO_P1L1, "port1led1", NULL ),
 206         LED_STD(ADM5120_GPIO_P1L2, "port1led2", NULL ),
 207         LED_STD(ADM5120_GPIO_P2L0, "port2led0", NULL ),
 208         LED_STD(ADM5120_GPIO_P2L1, "port2led1", NULL ),
 209         LED_STD(ADM5120_GPIO_P2L2, "port2led2", NULL ),
 210         LED_STD(ADM5120_GPIO_P3L0, "port3led0", NULL ),
 211         LED_STD(ADM5120_GPIO_P3L1, "port3led1", NULL ),
 212         LED_STD(ADM5120_GPIO_P3L2, "port3led2", NULL ),
 213         LED_STD(ADM5120_GPIO_P4L0, "port4led0", NULL ),
 214         LED_STD(ADM5120_GPIO_P4L1, "port4led1", NULL ),
 215         LED_STD(ADM5120_GPIO_P4L2, "port4led2", NULL ),
 216 #endif
 217 };
 218
 219 #define MACH_DATA(m, n) {                               \
 220         .machtype       = (m),                          \
 221         .count          = ARRAY_SIZE(n ## _leds),       \
 222         .data           = n ## _leds                    \
 223 }
 224
 225 static struct mach_data machines[] __initdata = {
 226         MACH_DATA(MACH_ADM5120_GENERIC, generic),
 227         /* Compex */
 228         MACH_DATA(MACH_ADM5120_WP54AG,  wp54g),
 229         MACH_DATA(MACH_ADM5120_WP54G,   wp54g),
 230         MACH_DATA(MACH_ADM5120_WP54G_WRT, wp54g),
 231         MACH_DATA(MACH_ADM5120_WPP54AG, wp54g),
 232         MACH_DATA(MACH_ADM5120_WPP54G,  wp54g),
 233         /* Edimax */
 234         MACH_DATA(MACH_ADM5120_BR6104K, br6104k),
 235         /* Mikrotik */
 236         MACH_DATA(MACH_ADM5120_RB_133,  rb133),
 237         MACH_DATA(MACH_ADM5120_RB_133C, rb133),
 238         /* ZyXEL */
 239         MACH_DATA(MACH_ADM5120_P334WT,  p334wt),
 240 #if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
 241         /* untested */
 242         MACH_DATA(MACH_ADM5120_P334,    p334),
 243         MACH_DATA(MACH_ADM5120_P335,    p335),
 244         MACH_DATA(MACH_ADM5120_RB_111,  rb100),
 245         MACH_DATA(MACH_ADM5120_RB_112,  rb100),
 246         MACH_DATA(MACH_ADM5120_NP27G,   np27g),
 247         MACH_DATA(MACH_ADM5120_NP28G,   np28g),
 248         MACH_DATA(MACH_ADM5120_NP28GHS, np28g),
 249 #endif
 250 };
 251
 252 static struct adm5120_leddev * __init
 253 create_leddev(struct gpio_led_platform_data *data)
 254 {
 255         struct adm5120_leddev *p;
 256
 257         p = kzalloc(sizeof(*p), GFP_KERNEL);
 258         if (p == NULL)
 259                 return NULL;
 260
 261         memcpy(&p->pdata, data, sizeof(p->pdata));
 262         p->pdev.dev.platform_data = &p->pdata;
 263
 264         return p;
 265 }
 266
 267 static void
 268 destroy_leddev(struct adm5120_leddev *led)
 269 {
 270         if (led)
 271                 kfree(led);
 272 }
 273
 274 static struct mach_data * __init
 275 adm5120_leds_findmach(unsigned long machtype)
 276 {
 277         struct mach_data *mach;
 278         int i;
 279
 280         mach = NULL;
 281         for (i=0; i<ARRAY_SIZE(machines); i++) {
 282                 if (machines[i].machtype == machtype) {
 283                         mach = &machines[i];
 284                         break;
 285                 }
 286         };
 287
 288 #if defined(CONFIG_LEDS_ADM5120_DIAG)
 289         if (mach == NULL)
 290                 mach = machines;
 291 #endif
 292
 293         return mach;
 294 }
 295
 296 static int __init
 297 adm5120_leds_init(void)
 298 {
 299         struct mach_data *mach;
 300         int i, ret;
 301
 302         if (mips_machgroup != MACH_GROUP_ADM5120) {
 303                 ret = -EINVAL;
 304                 goto err;
 305         }
 306
 307         mach = adm5120_leds_findmach(mips_machtype);
 308         if (mach == NULL) {
 309                 /* the board is not yet supported */
 310                 ret = -EINVAL;
 311                 goto err;
 312         }
 313
 314         for (i=0; i < mach->count; i++) {
 315                 led_devs[i] = create_leddev(&mach->data[i]);
 316                 if (led_devs[i] == NULL) {
 317                         ret = -ENOMEM;
 318                         goto err_destroy;
 319                 }
 320                 led_devs[i]->pdev.name = "gpio-led";
 321                 led_devs[i]->pdev.id = i;
 322         }
 323
 324         for (i=0; i < mach->count; i++) {
 325                 ret = platform_device_register(&led_devs[i]->pdev);
 326                 if (ret)
 327                         goto err_unregister;
 328         }
 329
 330         led_count = mach->count;
 331         return 0;
 332
 333 err_unregister:
 334         for (i--; i>=0; i--)
 335                 platform_device_unregister(&led_devs[i]->pdev);
 336
 337 err_destroy:
 338         for (i=0; i<led_count; i++)
 339                 destroy_leddev(led_devs[i]);
 340 err:
 341         return ret;
 342 }
 343
 344 static void __exit
 345 adm5120_leds_exit(void)
 346 {
 347         int i;
 348
 349         for (i=0; i < led_count; i++) {
 350                 platform_device_unregister(&led_devs[i]->pdev);
 351                 destroy_leddev(led_devs[i]);
 352         }
 353 }
 354
 355 module_init(adm5120_leds_init);
 356 module_exit(adm5120_leds_exit);
 357
 358 MODULE_AUTHOR("Gabor Juhos <juhosg at openwrt.org>");
 359 MODULE_DESCRIPTION(DRV_DESC);
 360 MODULE_LICENSE("GPL");
 361