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

   1 /*
   2  *  $Id$
   3  *
   4  *  ADM5120 GPIO LED devices
   5  *
   6  *  Copyright (C) 2007,2008 OpenWrt.org
   7  *  Copyright (C) 2007,2008 Gabor Juhos <juhosg at openwrt.org>
   8  *
   9  *  This program is free software; you can redistribute it and/or modify it
  10  *  under the terms of the GNU General Public License version 2 as published
  11  *  by the Free Software Foundation.
  12  *
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/leds.h>
  19 #include <linux/err.h>
  20
  21 #include <linux/io.h>
  22 #include <linux/leds.h>
  23
  24 #include <asm/bootinfo.h>
  25 #include <asm/gpio.h>
  26
  27 #include <adm5120_info.h>
  28
  29 #define NUM_LEDS_MAX    23
  30 #define DRV_DESC        "LED driver for the ADM5120 based boards"
  31
  32 #define ADM5120_GPIO_xxxx       0x100   /* an unknown pin */
  33
  34 struct mach_data {
  35         unsigned long machtype;
  36         unsigned nr_leds;
  37         struct gpio_led *leds;
  38 };
  39
  40 struct adm5120_leddev {
  41         struct platform_device pdev;
  42         struct gpio_led led;
  43         struct gpio_led_platform_data pdata;
  44 };
  45
  46 static int led_count;
  47 static struct adm5120_leddev *led_devs[NUM_LEDS_MAX];
  48
  49 #define LED_ARRAY(n)                            \
  50 static struct gpio_led n ## _leds [] __initdata =
  51
  52 #define LED_DATA(n, t, g, a) {  \
  53         .name = (n),            \
  54         .default_trigger = (t), \
  55         .gpio = (g),            \
  56         .active_low = (a)       \
  57 }
  58
  59 #define LED_STD(g, n, t)        LED_DATA((n), (t), (g), 0)
  60 #define LED_INV(g, n, t)        LED_DATA((n), (t), (g), 1)
  61
  62 /*
  63  * Cellvision boards
  64  */
  65
  66 LED_ARRAY(cas771) {
  67         LED_STD(ADM5120_GPIO_PIN0, "cam_flash", NULL),
  68         /* GPIO PIN3 is the reset */
  69         LED_STD(ADM5120_GPIO_PIN6, "access", NULL),
  70         LED_STD(ADM5120_GPIO_P0L1, "status", NULL),
  71         LED_STD(ADM5120_GPIO_P0L2, "diag", NULL),
  72 };
  73
  74 /*
  75  * Compex boards
  76  */
  77 #if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
  78 LED_ARRAY(np27g) { /* FIXME: untested */
  79         LED_STD(ADM5120_GPIO_xxxx, "lan1",      NULL),
  80         LED_STD(ADM5120_GPIO_xxxx, "lan2",      NULL),
  81         LED_STD(ADM5120_GPIO_xxxx, "lan3",      NULL),
  82         LED_STD(ADM5120_GPIO_xxxx, "lan4",      NULL),
  83         LED_STD(ADM5120_GPIO_xxxx, "wan_cond",  NULL),
  84         LED_STD(ADM5120_GPIO_xxxx, "wlan",      NULL),
  85         LED_STD(ADM5120_GPIO_xxxx, "wan_act",   NULL),
  86         LED_STD(ADM5120_GPIO_xxxx, "usb1",      NULL),
  87         LED_STD(ADM5120_GPIO_xxxx, "usb2",      NULL),
  88         LED_INV(ADM5120_GPIO_PIN2, "power",     NULL),
  89         LED_STD(ADM5120_GPIO_xxxx, "diag",      NULL),
  90 };
  91 #endif
  92
  93 LED_ARRAY(np28g) {
  94         LED_INV(ADM5120_GPIO_PIN2, "diag",      NULL),
  95         LED_INV(ADM5120_GPIO_PIN3, "power",     NULL),
  96         LED_INV(ADM5120_GPIO_PIN6, "wan_cond",  NULL),
  97         LED_INV(ADM5120_GPIO_PIN7, "wifi",      NULL),
  98         LED_INV(ADM5120_GPIO_P0L2, "usb1",      NULL),
  99         LED_INV(ADM5120_GPIO_P1L0, "lan1",      NULL),
 100         LED_INV(ADM5120_GPIO_P1L2, "usb2",      NULL),
 101         LED_INV(ADM5120_GPIO_P2L0, "lan2",      NULL),
 102         LED_INV(ADM5120_GPIO_P2L2, "usb3",      NULL),
 103         LED_INV(ADM5120_GPIO_P3L0, "lan3",      NULL),
 104         LED_INV(ADM5120_GPIO_P3L2, "usb4",      NULL),
 105         LED_INV(ADM5120_GPIO_P4L0, "wan",       NULL),
 106 };
 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 LED_ARRAY(br61x4wg) {
 134         LED_STD(ADM5120_GPIO_PIN0, "power",             NULL),
 135         LED_STD(ADM5120_GPIO_PIN5, "wlan",              NULL),
 136         LED_INV(ADM5120_GPIO_P0L1, "wan_speed",         NULL),
 137         LED_INV(ADM5120_GPIO_P0L0, "wan_lnkact",        NULL),
 138         LED_INV(ADM5120_GPIO_P1L1, "lan1_speed",        NULL),
 139         LED_INV(ADM5120_GPIO_P1L0, "lan1_lnkact",       NULL),
 140         LED_INV(ADM5120_GPIO_P2L1, "lan2_speed",        NULL),
 141         LED_INV(ADM5120_GPIO_P2L0, "lan2_lnkact",       NULL),
 142         LED_INV(ADM5120_GPIO_P3L1, "lan3_speed",        NULL),
 143         LED_INV(ADM5120_GPIO_P3L0, "lan3_lnkact",       NULL),
 144         LED_INV(ADM5120_GPIO_P4L1, "lan4_speed",        NULL),
 145         LED_INV(ADM5120_GPIO_P4L0, "lan4_lnkact",       NULL),
 146 };
 147
 148 /*
 149  * Mikrotik boards
 150  */
 151 LED_ARRAY(rb100) {
 152         LED_STD(ADM5120_GPIO_PIN3, "user",              NULL),
 153         LED_INV(ADM5120_GPIO_P0L1, "lan_speed",         NULL),
 154         LED_INV(ADM5120_GPIO_P0L0, "lan_lnkact",        NULL),
 155 };
 156
 157 LED_ARRAY(rb133) {
 158         LED_STD(ADM5120_GPIO_PIN6, "power",             NULL),
 159         LED_STD(ADM5120_GPIO_PIN5, "user",              NULL),
 160         LED_INV(ADM5120_GPIO_P2L1, "lan1_speed",        NULL), /* untested */
 161         LED_INV(ADM5120_GPIO_P2L0, "lan1_lnkact",       NULL), /* untested */
 162 };
 163
 164 LED_ARRAY(rb133c) {
 165         LED_STD(ADM5120_GPIO_PIN6, "power",             NULL),
 166         LED_STD(ADM5120_GPIO_PIN5, "user",              NULL),
 167         LED_INV(ADM5120_GPIO_P2L1, "lan1_speed",        NULL), /* untested */
 168         LED_INV(ADM5120_GPIO_P2L0, "lan1_lnkact",       NULL), /* untested */
 169         LED_INV(ADM5120_GPIO_P1L1, "lan2_speed",        NULL), /* untested */
 170         LED_INV(ADM5120_GPIO_P1L0, "lan2_lnkact",       NULL), /* untested */
 171         LED_INV(ADM5120_GPIO_P0L1, "lan3_speed",        NULL), /* untested */
 172         LED_INV(ADM5120_GPIO_P0L0, "lan3_lnkact",       NULL), /* untested */
 173 };
 174
 175 LED_ARRAY(rb153) {
 176         LED_STD(ADM5120_GPIO_PIN5, "user",              NULL),
 177         LED_INV(ADM5120_GPIO_P0L1, "lan1_speed",        NULL),
 178         LED_INV(ADM5120_GPIO_P0L0, "lan1_lnkact",       NULL),
 179         LED_INV(ADM5120_GPIO_P1L1, "lan5_speed",        NULL),
 180         LED_INV(ADM5120_GPIO_P1L0, "lan5_lnkact",       NULL),
 181         LED_INV(ADM5120_GPIO_P2L1, "lan4_speed",        NULL),
 182         LED_INV(ADM5120_GPIO_P2L0, "lan4_lnkact",       NULL),
 183         LED_INV(ADM5120_GPIO_P3L1, "lan3_speed",        NULL),
 184         LED_INV(ADM5120_GPIO_P3L0, "lan3_lnkact",       NULL),
 185         LED_INV(ADM5120_GPIO_P4L1, "lan2_speed",        NULL),
 186         LED_INV(ADM5120_GPIO_P4L0, "lan2_lnkact",       NULL),
 187 };
 188
 189 /*
 190  * ZyXEL boards
 191  */
 192 #if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
 193 LED_ARRAY(p334) { /* FIXME: untested */
 194         LED_INV(ADM5120_GPIO_xxxx, "power",     NULL),
 195         LED_INV(ADM5120_GPIO_xxxx, "lan1",      NULL),
 196         LED_INV(ADM5120_GPIO_xxxx, "lan2",      NULL),
 197         LED_INV(ADM5120_GPIO_xxxx, "lan3",      NULL),
 198         LED_INV(ADM5120_GPIO_xxxx, "lan4",      NULL),
 199         LED_INV(ADM5120_GPIO_xxxx, "wan",       NULL),
 200 };
 201 #endif
 202
 203 LED_ARRAY(p334wt) {
 204         LED_INV(ADM5120_GPIO_PIN2, "power",     NULL),
 205         LED_INV(ADM5120_GPIO_P3L0, "lan1",      NULL),
 206         LED_INV(ADM5120_GPIO_P2L0, "lan2",      NULL),
 207         LED_INV(ADM5120_GPIO_P1L0, "lan3",      NULL),
 208         LED_INV(ADM5120_GPIO_P0L0, "lan4",      NULL),
 209         LED_INV(ADM5120_GPIO_P4L0, "wan",       NULL),
 210         LED_INV(ADM5120_GPIO_P4L2, "wlan",      NULL),
 211         LED_INV(ADM5120_GPIO_P2L2, "otist",     NULL),
 212         LED_INV(ADM5120_GPIO_P1L2, "hidden",    NULL),
 213 };
 214
 215 #if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
 216 LED_ARRAY(p335) { /* FIXME: untested */
 217         LED_INV(ADM5120_GPIO_PIN2, "power",     NULL),
 218         LED_INV(ADM5120_GPIO_P3L0, "lan1",      NULL),
 219         LED_INV(ADM5120_GPIO_P2L0, "lan2",      NULL),
 220         LED_INV(ADM5120_GPIO_P1L0, "lan3",      NULL),
 221         LED_INV(ADM5120_GPIO_P0L0, "lan4",      NULL),
 222         LED_INV(ADM5120_GPIO_P4L0, "wan",       NULL),
 223         LED_INV(ADM5120_GPIO_P4L2, "wlan",      NULL),
 224         LED_INV(ADM5120_GPIO_P2L2, "otist",     NULL),
 225         LED_INV(ADM5120_GPIO_xxxx, "usb",       NULL),
 226 };
 227 #endif
 228
 229 /*
 230  * Generic board
 231  */
 232 LED_ARRAY(generic) {
 233 #if defined(CONFIG_LEDS_ADM5120_DIAG)
 234         LED_STD(ADM5120_GPIO_PIN0, "gpio0",     NULL),
 235         LED_STD(ADM5120_GPIO_PIN1, "gpio1",     NULL),
 236         LED_STD(ADM5120_GPIO_PIN2, "gpio2",     NULL),
 237         LED_STD(ADM5120_GPIO_PIN3, "gpio3",     NULL),
 238         LED_STD(ADM5120_GPIO_PIN4, "gpio4",     NULL),
 239         LED_STD(ADM5120_GPIO_PIN5, "gpio5",     NULL),
 240         LED_STD(ADM5120_GPIO_PIN6, "gpio6",     NULL),
 241         LED_STD(ADM5120_GPIO_PIN7, "gpio7",     NULL),
 242         LED_STD(ADM5120_GPIO_P0L0, "port0led0", NULL),
 243         LED_STD(ADM5120_GPIO_P0L1, "port0led1", NULL),
 244         LED_STD(ADM5120_GPIO_P0L2, "port0led2", NULL),
 245         LED_STD(ADM5120_GPIO_P1L0, "port1led0", NULL),
 246         LED_STD(ADM5120_GPIO_P1L1, "port1led1", NULL),
 247         LED_STD(ADM5120_GPIO_P1L2, "port1led2", NULL),
 248         LED_STD(ADM5120_GPIO_P2L0, "port2led0", NULL),
 249         LED_STD(ADM5120_GPIO_P2L1, "port2led1", NULL),
 250         LED_STD(ADM5120_GPIO_P2L2, "port2led2", NULL),
 251         LED_STD(ADM5120_GPIO_P3L0, "port3led0", NULL),
 252         LED_STD(ADM5120_GPIO_P3L1, "port3led1", NULL),
 253         LED_STD(ADM5120_GPIO_P3L2, "port3led2", NULL),
 254         LED_STD(ADM5120_GPIO_P4L0, "port4led0", NULL),
 255         LED_STD(ADM5120_GPIO_P4L1, "port4led1", NULL),
 256         LED_STD(ADM5120_GPIO_P4L2, "port4led2", NULL),
 257 #endif
 258 };
 259
 260 #define MACH_DATA(m, n) {                               \
 261         .machtype       = (m),                          \
 262         .nr_leds        = ARRAY_SIZE(n ## _leds),       \
 263         .leds           = n ## _leds                    \
 264 }
 265
 266 static struct mach_data machines[] __initdata = {
 267         MACH_DATA(MACH_ADM5120_GENERIC, generic),
 268         /* Cellvision */
 269         MACH_DATA(MACH_ADM5120_CAS771, cas771),
 270         /* Compex */
 271         MACH_DATA(MACH_ADM5120_NP28G,   np28g),
 272         MACH_DATA(MACH_ADM5120_NP28GHS, np28g),
 273         MACH_DATA(MACH_ADM5120_WP54AG,  wp54g),
 274         MACH_DATA(MACH_ADM5120_WP54G,   wp54g),
 275         MACH_DATA(MACH_ADM5120_WP54G_WRT, wp54g),
 276         MACH_DATA(MACH_ADM5120_WPP54AG, wp54g),
 277         MACH_DATA(MACH_ADM5120_WPP54G,  wp54g),
 278         /* Edimax */
 279         MACH_DATA(MACH_ADM5120_BR6104K, br6104k),
 280         MACH_DATA(MACH_ADM5120_BR61x4WG, br61x4wg),
 281         /* Mikrotik */
 282         MACH_DATA(MACH_ADM5120_RB_111,  rb100),
 283         MACH_DATA(MACH_ADM5120_RB_112,  rb100),
 284         MACH_DATA(MACH_ADM5120_RB_133,  rb133),
 285         MACH_DATA(MACH_ADM5120_RB_133C, rb133c),
 286         MACH_DATA(MACH_ADM5120_RB_153,  rb153),
 287         /* ZyXEL */
 288         MACH_DATA(MACH_ADM5120_P334WT,  p334wt),
 289 #if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
 290         /* untested */
 291         MACH_DATA(MACH_ADM5120_P334,    p334),
 292         MACH_DATA(MACH_ADM5120_P335,    p335),
 293         MACH_DATA(MACH_ADM5120_NP27G,   np27g),
 294 #endif
 295 };
 296
 297 static struct adm5120_leddev * __init
 298 create_leddev(int id, struct gpio_led *led)
 299 {
 300         struct adm5120_leddev *p;
 301
 302         p = kzalloc(sizeof(*p), GFP_KERNEL);
 303         if (p == NULL)
 304                 return NULL;
 305
 306         memcpy(&p->led, led, sizeof(p->led));
 307         p->pdev.name = "leds-gpio";
 308         p->pdev.id = id;
 309         p->pdev.dev.platform_data = &p->pdata;
 310         p->pdata.num_leds = 1;
 311         p->pdata.leds = &p->led;
 312
 313         return p;
 314 }
 315
 316 static struct mach_data * __init
 317 adm5120_leds_findmach(unsigned long machtype)
 318 {
 319         struct mach_data *mach;
 320         int i;
 321
 322         mach = NULL;
 323         for (i = 0; i < ARRAY_SIZE(machines); i++) {
 324                 if (machines[i].machtype == machtype) {
 325                         mach = &machines[i];
 326                         break;
 327                 }
 328         };
 329
 330 #if defined(CONFIG_LEDS_ADM5120_DIAG)
 331         if (mach == NULL)
 332                 mach = machines;
 333 #endif
 334
 335         return mach;
 336 }
 337
 338 static int __init
 339 adm5120_leds_init(void)
 340 {
 341         struct mach_data *mach;
 342         int i, ret;
 343
 344         mach = adm5120_leds_findmach(mips_machtype);
 345         if (mach == NULL) {
 346                 printk(KERN_ERR "leds-adm5120: unsupported board\n");
 347                 ret = -EINVAL;
 348                 goto err;
 349         }
 350
 351         for (i = 0; i < mach->nr_leds; i++) {
 352                 led_devs[i] = create_leddev(i, &mach->leds[i]);
 353                 if (led_devs[i] == NULL) {
 354                         ret = -ENOMEM;
 355                         goto err_destroy;
 356                 }
 357         }
 358
 359         for (i = 0; i < mach->nr_leds; i++) {
 360                 ret = platform_device_register(&led_devs[i]->pdev);
 361                 if (ret)
 362                         goto err_unregister;
 363         }
 364
 365         led_count = mach->nr_leds;
 366         return 0;
 367
 368 err_unregister:
 369         for (i--; i >= 0; i--)
 370                 platform_device_unregister(&led_devs[i]->pdev);
 371
 372 err_destroy:
 373         for (i = 0; i < led_count; i++)
 374                 kfree(led_devs[i]);
 375 err:
 376         return ret;
 377 }
 378
 379 static void __exit
 380 adm5120_leds_exit(void)
 381 {
 382         int i;
 383
 384         for (i = 0; i < led_count; i++) {
 385                 platform_device_unregister(&led_devs[i]->pdev);
 386                 kfree(led_devs[i]);
 387         }
 388 }
 389
 390 module_init(adm5120_leds_init);
 391 module_exit(adm5120_leds_exit);
 392
 393 MODULE_AUTHOR("Gabor Juhos <juhosg at openwrt.org>");
 394 MODULE_DESCRIPTION(DRV_DESC);
 395 MODULE_LICENSE("GPL v2");
 396