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@freemail.hu>
   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  * ZyXEL boards
  75  */
  76 #if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
  77 LED_ARRAY(p334) { /* FIXME: untested */
  78         LED_INV(ADM5120_GPIO_xxxx, "power",     NULL ),
  79         LED_INV(ADM5120_GPIO_xxxx, "lan1",      NULL ),
  80         LED_INV(ADM5120_GPIO_xxxx, "lan2",      NULL ),
  81         LED_INV(ADM5120_GPIO_xxxx, "lan3",      NULL ),
  82         LED_INV(ADM5120_GPIO_xxxx, "lan4",      NULL ),
  83         LED_INV(ADM5120_GPIO_xxxx, "wan",       NULL ),
  84 };
  85 #endif
  86
  87 LED_ARRAY(p334wt) {
  88         LED_INV(ADM5120_GPIO_PIN2, "power",     NULL ),
  89         LED_INV(ADM5120_GPIO_P3L0, "lan1",      NULL ),
  90         LED_INV(ADM5120_GPIO_P2L0, "lan2",      NULL ),
  91         LED_INV(ADM5120_GPIO_P1L0, "lan3",      NULL ),
  92         LED_INV(ADM5120_GPIO_P0L0, "lan4",      NULL ),
  93         LED_INV(ADM5120_GPIO_P4L0, "wan",       NULL ),
  94         LED_INV(ADM5120_GPIO_P4L2, "wlan",      NULL ),
  95         LED_INV(ADM5120_GPIO_P2L2, "otist",     NULL ),
  96         LED_INV(ADM5120_GPIO_P1L2, "hidden",    NULL ),
  97 };
  98
  99 #if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
 100 LED_ARRAY(p335) { /* FIXME: untested */
 101         LED_INV(ADM5120_GPIO_PIN2, "power",     NULL ),
 102         LED_INV(ADM5120_GPIO_P3L0, "lan1",      NULL ),
 103         LED_INV(ADM5120_GPIO_P2L0, "lan2",      NULL ),
 104         LED_INV(ADM5120_GPIO_P1L0, "lan3",      NULL ),
 105         LED_INV(ADM5120_GPIO_P0L0, "lan4",      NULL ),
 106         LED_INV(ADM5120_GPIO_P4L0, "wan",       NULL ),
 107         LED_INV(ADM5120_GPIO_P4L2, "wlan",      NULL ),
 108         LED_INV(ADM5120_GPIO_P2L2, "otist",     NULL ),
 109         LED_INV(ADM5120_GPIO_xxxx, "usb",       NULL ),
 110 };
 111 #endif
 112
 113 /*
 114  * Mikrotik boards
 115  */
 116 #if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
 117 LED_ARRAY(rb100) { /* FIXME: untested */
 118         LED_STD(ADM5120_GPIO_PIN6, "power",     NULL ),
 119         LED_STD(ADM5120_GPIO_PIN3, "user",      NULL ),
 120 };
 121 #endif
 122
 123 /*
 124  * Compex boards
 125  */
 126 #if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
 127 LED_ARRAY(np27g) { /* FIXME: untested */
 128         LED_STD(ADM5120_GPIO_xxxx, "lan1",      NULL ),
 129         LED_STD(ADM5120_GPIO_xxxx, "lan2",      NULL ),
 130         LED_STD(ADM5120_GPIO_xxxx, "lan3",      NULL ),
 131         LED_STD(ADM5120_GPIO_xxxx, "lan4",      NULL ),
 132         LED_STD(ADM5120_GPIO_xxxx, "wan_cond",  NULL ),
 133         LED_STD(ADM5120_GPIO_xxxx, "wlan",      NULL ),
 134         LED_STD(ADM5120_GPIO_xxxx, "wan_act",   NULL ),
 135         LED_STD(ADM5120_GPIO_xxxx, "usb1",      NULL ),
 136         LED_STD(ADM5120_GPIO_xxxx, "usb2",      NULL ),
 137         LED_INV(ADM5120_GPIO_PIN2, "power",     NULL ),
 138         LED_STD(ADM5120_GPIO_xxxx, "diag",      NULL ),
 139 };
 140 #endif
 141
 142 #if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
 143 LED_ARRAY(np28g) { /* FIXME: untested */
 144         LED_STD(ADM5120_GPIO_xxxx, "lan1",      NULL ),
 145         LED_STD(ADM5120_GPIO_xxxx, "lan2",      NULL ),
 146         LED_STD(ADM5120_GPIO_xxxx, "lan3",      NULL ),
 147         LED_STD(ADM5120_GPIO_xxxx, "wan",       NULL ),
 148         LED_STD(ADM5120_GPIO_xxxx, "wlan",      NULL ),
 149         LED_STD(ADM5120_GPIO_xxxx, "usb1",      NULL ),
 150         LED_STD(ADM5120_GPIO_xxxx, "usb2",      NULL ),
 151         LED_STD(ADM5120_GPIO_xxxx, "usb3",      NULL ),
 152         LED_STD(ADM5120_GPIO_xxxx, "usb4",      NULL ),
 153         LED_INV(ADM5120_GPIO_PIN2, "power",     NULL ),
 154         LED_STD(ADM5120_GPIO_xxxx, "diag",      NULL ),
 155 };
 156 #endif
 157
 158 LED_ARRAY(wp54g) {
 159         LED_INV(ADM5120_GPIO_PIN2, "diag",      NULL ),
 160         LED_INV(ADM5120_GPIO_PIN6, "wlan",      NULL ),
 161         LED_INV(ADM5120_GPIO_PIN7, "wan",       NULL ),
 162         LED_INV(ADM5120_GPIO_P0L0, "lan1",      NULL ),
 163         LED_INV(ADM5120_GPIO_P1L0, "lan2",      NULL ),
 164 };
 165
 166 LED_ARRAY(generic) {
 167 #if defined(CONFIG_LEDS_ADM5120_DIAG)
 168         LED_STD(ADM5120_GPIO_PIN0, "gpio0",     NULL ),
 169         LED_STD(ADM5120_GPIO_PIN1, "gpio1",     NULL ),
 170         LED_STD(ADM5120_GPIO_PIN2, "gpio2",     NULL ),
 171         LED_STD(ADM5120_GPIO_PIN3, "gpio3",     NULL ),
 172         LED_STD(ADM5120_GPIO_PIN4, "gpio4",     NULL ),
 173         LED_STD(ADM5120_GPIO_PIN5, "gpio5",     NULL ),
 174         LED_STD(ADM5120_GPIO_PIN6, "gpio6",     NULL ),
 175         LED_STD(ADM5120_GPIO_PIN7, "gpio7",     NULL ),
 176         LED_STD(ADM5120_GPIO_P0L0, "port0led0", NULL ),
 177         LED_STD(ADM5120_GPIO_P0L1, "port0led1", NULL ),
 178         LED_STD(ADM5120_GPIO_P0L2, "port0led2", NULL ),
 179         LED_STD(ADM5120_GPIO_P1L0, "port1led0", NULL ),
 180         LED_STD(ADM5120_GPIO_P1L1, "port1led1", NULL ),
 181         LED_STD(ADM5120_GPIO_P1L2, "port1led2", NULL ),
 182         LED_STD(ADM5120_GPIO_P2L0, "port2led0", NULL ),
 183         LED_STD(ADM5120_GPIO_P2L1, "port2led1", NULL ),
 184         LED_STD(ADM5120_GPIO_P2L2, "port2led2", NULL ),
 185         LED_STD(ADM5120_GPIO_P3L0, "port3led0", NULL ),
 186         LED_STD(ADM5120_GPIO_P3L1, "port3led1", NULL ),
 187         LED_STD(ADM5120_GPIO_P3L2, "port3led2", NULL ),
 188         LED_STD(ADM5120_GPIO_P4L0, "port4led0", NULL ),
 189         LED_STD(ADM5120_GPIO_P4L1, "port4led1", NULL ),
 190         LED_STD(ADM5120_GPIO_P4L2, "port4led2", NULL ),
 191 #endif
 192 };
 193
 194 #define MACH_DATA(m, n) {                               \
 195         .machtype       = (m),                          \
 196         .count          = ARRAY_SIZE(n ## _leds),       \
 197         .data           = n ## _leds                    \
 198 }
 199
 200 static struct mach_data machines[] __initdata = {
 201         MACH_DATA(MACH_ADM5120_GENERIC, generic),
 202         MACH_DATA(MACH_ADM5120_P334WT,  p334wt),
 203         MACH_DATA(MACH_ADM5120_WP54AG,  wp54g),
 204         MACH_DATA(MACH_ADM5120_WP54G,   wp54g),
 205         MACH_DATA(MACH_ADM5120_WP54G_WRT, wp54g),
 206         MACH_DATA(MACH_ADM5120_WPP54AG, wp54g),
 207         MACH_DATA(MACH_ADM5120_WPP54G,  wp54g),
 208 #if defined(CONFIG_LEDS_ADM5120_EXPERIMENTAL)
 209         MACH_DATA(MACH_ADM5120_P334,    p334),
 210         MACH_DATA(MACH_ADM5120_P335,    p335),
 211         MACH_DATA(MACH_ADM5120_RB_111,  rb100),
 212         MACH_DATA(MACH_ADM5120_RB_112,  rb100),
 213         MACH_DATA(MACH_ADM5120_NP27G,   np27g),
 214         MACH_DATA(MACH_ADM5120_NP28G,   np28g),
 215         MACH_DATA(MACH_ADM5120_NP28GHS, np28g),
 216 #endif
 217 };
 218
 219 static struct adm5120_leddev * __init
 220 create_leddev(struct gpio_led_platform_data *data)
 221 {
 222         struct adm5120_leddev *p;
 223
 224         p = kzalloc(sizeof(*p), GFP_KERNEL);
 225         if (p == NULL)
 226                 return NULL;
 227
 228         memcpy(&p->pdata, data, sizeof(p->pdata));
 229         p->pdev.dev.platform_data = &p->pdata;
 230
 231         return p;
 232 }
 233
 234 static void
 235 destroy_leddev(struct adm5120_leddev *led)
 236 {
 237         if (led)
 238                 kfree(led);
 239 }
 240
 241 static struct mach_data * __init
 242 adm5120_leds_findmach(unsigned long machtype)
 243 {
 244         struct mach_data *mach;
 245         int i;
 246
 247         mach = NULL;
 248         for (i=0; i<ARRAY_SIZE(machines); i++) {
 249                 if (machines[i].machtype == machtype) {
 250                         mach = &machines[i];
 251                         break;
 252                 }
 253         };
 254
 255 #if defined(CONFIG_LEDS_ADM5120_DIAG)
 256         if (mach == NULL)
 257                 mach = machines;
 258 #endif
 259
 260         return mach;
 261 }
 262
 263 static int __init
 264 adm5120_leds_init(void)
 265 {
 266         struct mach_data *mach;
 267         int i, ret;
 268
 269         if (mips_machgroup != MACH_GROUP_ADM5120) {
 270                 ret = -EINVAL;
 271                 goto err;
 272         }
 273
 274         mach = adm5120_leds_findmach(mips_machtype);
 275         if (mach == NULL) {
 276                 /* the board is not yet supported */
 277                 ret = -EINVAL;
 278                 goto err;
 279         }
 280
 281         for (i=0; i < mach->count; i++) {
 282                 led_devs[i] = create_leddev(&mach->data[i]);
 283                 if (led_devs[i] == NULL) {
 284                         ret = -ENOMEM;
 285                         goto err_destroy;
 286                 }
 287                 led_devs[i]->pdev.name = "gpio-led";
 288                 led_devs[i]->pdev.id = i;
 289         }
 290
 291         for (i=0; i < mach->count; i++) {
 292                 ret = platform_device_register(&led_devs[i]->pdev);
 293                 if (ret)
 294                         goto err_unregister;
 295         }
 296
 297         led_count = mach->count;
 298         return 0;
 299
 300 err_unregister:
 301         for (i--; i>=0; i--)
 302                 platform_device_unregister(&led_devs[i]->pdev);
 303
 304 err_destroy:
 305         for (i=0; i<led_count; i++)
 306                 destroy_leddev(led_devs[i]);
 307 err:
 308         return ret;
 309 }
 310
 311 static void __exit
 312 adm5120_leds_exit(void)
 313 {
 314         int i;
 315
 316         for (i=0; i < led_count; i++) {
 317                 platform_device_unregister(&led_devs[i]->pdev);
 318                 destroy_leddev(led_devs[i]);
 319         }
 320 }
 321
 322 module_init(adm5120_leds_init);
 323 module_exit(adm5120_leds_exit);
 324
 325 MODULE_AUTHOR("Gabor Juhos <juhosg@freemail.hu>");
 326 MODULE_DESCRIPTION(DRV_DESC);
 327 MODULE_LICENSE("GPL");
 328