Ricardo Ribalda Delgado | 56a1740 | 2013-08-14 14:23:50 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2011 bct electronic GmbH |
| 3 | * Copyright 2013 Qtechnology/AS |
| 4 | * |
| 5 | * Author: Peter Meerwald <p.meerwald@bct-electronic.com> |
| 6 | * Author: Ricardo Ribalda <ricardo.ribalda@gmail.com> |
| 7 | * |
| 8 | * Based on leds-pca955x.c |
| 9 | * |
| 10 | * This file is subject to the terms and conditions of version 2 of |
| 11 | * the GNU General Public License. See the file COPYING in the main |
| 12 | * directory of this archive for more details. |
| 13 | * |
| 14 | * LED driver for the PCA9633 I2C LED driver (7-bit slave address 0x62) |
Peter Meerwald | 3dfedb9 | 2014-07-02 22:50:34 -0700 | [diff] [blame] | 15 | * LED driver for the PCA9634/5 I2C LED driver (7-bit slave address set by hw.) |
Ricardo Ribalda Delgado | 56a1740 | 2013-08-14 14:23:50 -0700 | [diff] [blame] | 16 | * |
| 17 | * Note that hardware blinking violates the leds infrastructure driver |
| 18 | * interface since the hardware only supports blinking all LEDs with the |
| 19 | * same delay_on/delay_off rates. That is, only the LEDs that are set to |
| 20 | * blink will actually blink but all LEDs that are set to blink will blink |
| 21 | * in identical fashion. The delay_on/delay_off values of the last LED |
| 22 | * that is set to blink will be used for all of the blinking LEDs. |
| 23 | * Hardware blinking is disabled by default but can be enabled by setting |
| 24 | * the 'blink_type' member in the platform_data struct to 'PCA963X_HW_BLINK' |
| 25 | * or by adding the 'nxp,hw-blink' property to the DTS. |
| 26 | */ |
| 27 | |
| 28 | #include <linux/module.h> |
| 29 | #include <linux/delay.h> |
| 30 | #include <linux/string.h> |
| 31 | #include <linux/ctype.h> |
| 32 | #include <linux/leds.h> |
| 33 | #include <linux/err.h> |
| 34 | #include <linux/i2c.h> |
| 35 | #include <linux/workqueue.h> |
| 36 | #include <linux/slab.h> |
| 37 | #include <linux/of.h> |
| 38 | #include <linux/platform_data/leds-pca963x.h> |
| 39 | |
| 40 | /* LED select registers determine the source that drives LED outputs */ |
| 41 | #define PCA963X_LED_OFF 0x0 /* LED driver off */ |
| 42 | #define PCA963X_LED_ON 0x1 /* LED driver on */ |
| 43 | #define PCA963X_LED_PWM 0x2 /* Controlled through PWM */ |
| 44 | #define PCA963X_LED_GRP_PWM 0x3 /* Controlled through PWM/GRPPWM */ |
| 45 | |
| 46 | #define PCA963X_MODE2_DMBLNK 0x20 /* Enable blinking */ |
| 47 | |
| 48 | #define PCA963X_MODE1 0x00 |
| 49 | #define PCA963X_MODE2 0x01 |
| 50 | #define PCA963X_PWM_BASE 0x02 |
| 51 | |
| 52 | enum pca963x_type { |
| 53 | pca9633, |
| 54 | pca9634, |
Peter Meerwald | 3dfedb9 | 2014-07-02 22:50:34 -0700 | [diff] [blame] | 55 | pca9635, |
Ricardo Ribalda Delgado | 56a1740 | 2013-08-14 14:23:50 -0700 | [diff] [blame] | 56 | }; |
| 57 | |
| 58 | struct pca963x_chipdef { |
| 59 | u8 grppwm; |
| 60 | u8 grpfreq; |
| 61 | u8 ledout_base; |
| 62 | int n_leds; |
| 63 | }; |
| 64 | |
| 65 | static struct pca963x_chipdef pca963x_chipdefs[] = { |
| 66 | [pca9633] = { |
| 67 | .grppwm = 0x6, |
| 68 | .grpfreq = 0x7, |
| 69 | .ledout_base = 0x8, |
| 70 | .n_leds = 4, |
| 71 | }, |
| 72 | [pca9634] = { |
| 73 | .grppwm = 0xa, |
| 74 | .grpfreq = 0xb, |
| 75 | .ledout_base = 0xc, |
| 76 | .n_leds = 8, |
| 77 | }, |
Peter Meerwald | 3dfedb9 | 2014-07-02 22:50:34 -0700 | [diff] [blame] | 78 | [pca9635] = { |
| 79 | .grppwm = 0x12, |
| 80 | .grpfreq = 0x13, |
| 81 | .ledout_base = 0x14, |
| 82 | .n_leds = 16, |
| 83 | }, |
Ricardo Ribalda Delgado | 56a1740 | 2013-08-14 14:23:50 -0700 | [diff] [blame] | 84 | }; |
| 85 | |
| 86 | /* Total blink period in milliseconds */ |
| 87 | #define PCA963X_BLINK_PERIOD_MIN 42 |
| 88 | #define PCA963X_BLINK_PERIOD_MAX 10667 |
| 89 | |
| 90 | static const struct i2c_device_id pca963x_id[] = { |
| 91 | { "pca9632", pca9633 }, |
| 92 | { "pca9633", pca9633 }, |
| 93 | { "pca9634", pca9634 }, |
Peter Meerwald | 3dfedb9 | 2014-07-02 22:50:34 -0700 | [diff] [blame] | 94 | { "pca9635", pca9635 }, |
Ricardo Ribalda Delgado | 56a1740 | 2013-08-14 14:23:50 -0700 | [diff] [blame] | 95 | { } |
| 96 | }; |
| 97 | MODULE_DEVICE_TABLE(i2c, pca963x_id); |
| 98 | |
| 99 | enum pca963x_cmd { |
| 100 | BRIGHTNESS_SET, |
| 101 | BLINK_SET, |
| 102 | }; |
| 103 | |
| 104 | struct pca963x_led; |
| 105 | |
| 106 | struct pca963x { |
| 107 | struct pca963x_chipdef *chipdef; |
| 108 | struct mutex mutex; |
| 109 | struct i2c_client *client; |
| 110 | struct pca963x_led *leds; |
| 111 | }; |
| 112 | |
| 113 | struct pca963x_led { |
| 114 | struct pca963x *chip; |
| 115 | struct work_struct work; |
| 116 | enum led_brightness brightness; |
| 117 | struct led_classdev led_cdev; |
Peter Meerwald | 3dfedb9 | 2014-07-02 22:50:34 -0700 | [diff] [blame] | 118 | int led_num; /* 0 .. 15 potentially */ |
Ricardo Ribalda Delgado | 56a1740 | 2013-08-14 14:23:50 -0700 | [diff] [blame] | 119 | enum pca963x_cmd cmd; |
| 120 | char name[32]; |
| 121 | u8 gdc; |
| 122 | u8 gfrq; |
| 123 | }; |
| 124 | |
| 125 | static void pca963x_brightness_work(struct pca963x_led *pca963x) |
| 126 | { |
| 127 | u8 ledout_addr = pca963x->chip->chipdef->ledout_base |
| 128 | + (pca963x->led_num / 4); |
| 129 | u8 ledout; |
| 130 | int shift = 2 * (pca963x->led_num % 4); |
| 131 | u8 mask = 0x3 << shift; |
| 132 | |
| 133 | mutex_lock(&pca963x->chip->mutex); |
| 134 | ledout = i2c_smbus_read_byte_data(pca963x->chip->client, ledout_addr); |
| 135 | switch (pca963x->brightness) { |
| 136 | case LED_FULL: |
| 137 | i2c_smbus_write_byte_data(pca963x->chip->client, ledout_addr, |
| 138 | (ledout & ~mask) | (PCA963X_LED_ON << shift)); |
| 139 | break; |
| 140 | case LED_OFF: |
| 141 | i2c_smbus_write_byte_data(pca963x->chip->client, ledout_addr, |
| 142 | ledout & ~mask); |
| 143 | break; |
| 144 | default: |
| 145 | i2c_smbus_write_byte_data(pca963x->chip->client, |
| 146 | PCA963X_PWM_BASE + pca963x->led_num, |
| 147 | pca963x->brightness); |
| 148 | i2c_smbus_write_byte_data(pca963x->chip->client, ledout_addr, |
| 149 | (ledout & ~mask) | (PCA963X_LED_PWM << shift)); |
| 150 | break; |
| 151 | } |
| 152 | mutex_unlock(&pca963x->chip->mutex); |
| 153 | } |
| 154 | |
| 155 | static void pca963x_blink_work(struct pca963x_led *pca963x) |
| 156 | { |
| 157 | u8 ledout_addr = pca963x->chip->chipdef->ledout_base + |
| 158 | (pca963x->led_num / 4); |
| 159 | u8 ledout; |
| 160 | u8 mode2 = i2c_smbus_read_byte_data(pca963x->chip->client, |
| 161 | PCA963X_MODE2); |
| 162 | int shift = 2 * (pca963x->led_num % 4); |
| 163 | u8 mask = 0x3 << shift; |
| 164 | |
| 165 | i2c_smbus_write_byte_data(pca963x->chip->client, |
| 166 | pca963x->chip->chipdef->grppwm, pca963x->gdc); |
| 167 | |
| 168 | i2c_smbus_write_byte_data(pca963x->chip->client, |
| 169 | pca963x->chip->chipdef->grpfreq, pca963x->gfrq); |
| 170 | |
| 171 | if (!(mode2 & PCA963X_MODE2_DMBLNK)) |
| 172 | i2c_smbus_write_byte_data(pca963x->chip->client, PCA963X_MODE2, |
| 173 | mode2 | PCA963X_MODE2_DMBLNK); |
| 174 | |
| 175 | mutex_lock(&pca963x->chip->mutex); |
| 176 | ledout = i2c_smbus_read_byte_data(pca963x->chip->client, ledout_addr); |
| 177 | if ((ledout & mask) != (PCA963X_LED_GRP_PWM << shift)) |
| 178 | i2c_smbus_write_byte_data(pca963x->chip->client, ledout_addr, |
| 179 | (ledout & ~mask) | (PCA963X_LED_GRP_PWM << shift)); |
| 180 | mutex_unlock(&pca963x->chip->mutex); |
| 181 | } |
| 182 | |
| 183 | static void pca963x_work(struct work_struct *work) |
| 184 | { |
| 185 | struct pca963x_led *pca963x = container_of(work, |
| 186 | struct pca963x_led, work); |
| 187 | |
| 188 | switch (pca963x->cmd) { |
| 189 | case BRIGHTNESS_SET: |
| 190 | pca963x_brightness_work(pca963x); |
| 191 | break; |
| 192 | case BLINK_SET: |
| 193 | pca963x_blink_work(pca963x); |
| 194 | break; |
| 195 | } |
| 196 | } |
| 197 | |
| 198 | static void pca963x_led_set(struct led_classdev *led_cdev, |
| 199 | enum led_brightness value) |
| 200 | { |
| 201 | struct pca963x_led *pca963x; |
| 202 | |
| 203 | pca963x = container_of(led_cdev, struct pca963x_led, led_cdev); |
| 204 | |
| 205 | pca963x->cmd = BRIGHTNESS_SET; |
| 206 | pca963x->brightness = value; |
| 207 | |
| 208 | /* |
| 209 | * Must use workqueue for the actual I/O since I2C operations |
| 210 | * can sleep. |
| 211 | */ |
| 212 | schedule_work(&pca963x->work); |
| 213 | } |
| 214 | |
| 215 | static int pca963x_blink_set(struct led_classdev *led_cdev, |
| 216 | unsigned long *delay_on, unsigned long *delay_off) |
| 217 | { |
| 218 | struct pca963x_led *pca963x; |
| 219 | unsigned long time_on, time_off, period; |
| 220 | u8 gdc, gfrq; |
| 221 | |
| 222 | pca963x = container_of(led_cdev, struct pca963x_led, led_cdev); |
| 223 | |
| 224 | time_on = *delay_on; |
| 225 | time_off = *delay_off; |
| 226 | |
| 227 | /* If both zero, pick reasonable defaults of 500ms each */ |
| 228 | if (!time_on && !time_off) { |
| 229 | time_on = 500; |
| 230 | time_off = 500; |
| 231 | } |
| 232 | |
| 233 | period = time_on + time_off; |
| 234 | |
| 235 | /* If period not supported by hardware, default to someting sane. */ |
| 236 | if ((period < PCA963X_BLINK_PERIOD_MIN) || |
| 237 | (period > PCA963X_BLINK_PERIOD_MAX)) { |
| 238 | time_on = 500; |
| 239 | time_off = 500; |
| 240 | period = time_on + time_off; |
| 241 | } |
| 242 | |
| 243 | /* |
| 244 | * From manual: duty cycle = (GDC / 256) -> |
| 245 | * (time_on / period) = (GDC / 256) -> |
| 246 | * GDC = ((time_on * 256) / period) |
| 247 | */ |
| 248 | gdc = (time_on * 256) / period; |
| 249 | |
| 250 | /* |
| 251 | * From manual: period = ((GFRQ + 1) / 24) in seconds. |
| 252 | * So, period (in ms) = (((GFRQ + 1) / 24) * 1000) -> |
| 253 | * GFRQ = ((period * 24 / 1000) - 1) |
| 254 | */ |
| 255 | gfrq = (period * 24 / 1000) - 1; |
| 256 | |
| 257 | pca963x->cmd = BLINK_SET; |
| 258 | pca963x->gdc = gdc; |
| 259 | pca963x->gfrq = gfrq; |
| 260 | |
| 261 | /* |
| 262 | * Must use workqueue for the actual I/O since I2C operations |
| 263 | * can sleep. |
| 264 | */ |
| 265 | schedule_work(&pca963x->work); |
| 266 | |
| 267 | *delay_on = time_on; |
| 268 | *delay_off = time_off; |
| 269 | |
| 270 | return 0; |
| 271 | } |
| 272 | |
| 273 | #if IS_ENABLED(CONFIG_OF) |
| 274 | static struct pca963x_platform_data * |
| 275 | pca963x_dt_init(struct i2c_client *client, struct pca963x_chipdef *chip) |
| 276 | { |
| 277 | struct device_node *np = client->dev.of_node, *child; |
| 278 | struct pca963x_platform_data *pdata; |
| 279 | struct led_info *pca963x_leds; |
| 280 | int count; |
| 281 | |
| 282 | count = of_get_child_count(np); |
| 283 | if (!count || count > chip->n_leds) |
| 284 | return ERR_PTR(-ENODEV); |
| 285 | |
| 286 | pca963x_leds = devm_kzalloc(&client->dev, |
| 287 | sizeof(struct led_info) * chip->n_leds, GFP_KERNEL); |
| 288 | if (!pca963x_leds) |
| 289 | return ERR_PTR(-ENOMEM); |
| 290 | |
| 291 | for_each_child_of_node(np, child) { |
Geert Uytterhoeven | a44b0f5 | 2015-03-15 03:41:52 -0700 | [diff] [blame] | 292 | struct led_info led = {}; |
Ricardo Ribalda Delgado | 56a1740 | 2013-08-14 14:23:50 -0700 | [diff] [blame] | 293 | u32 reg; |
| 294 | int res; |
| 295 | |
Ricardo Ribalda Delgado | 8a6acd64 | 2013-08-14 14:23:51 -0700 | [diff] [blame] | 296 | res = of_property_read_u32(child, "reg", ®); |
| 297 | if ((res != 0) || (reg >= chip->n_leds)) |
| 298 | continue; |
Ricardo Ribalda Delgado | 56a1740 | 2013-08-14 14:23:50 -0700 | [diff] [blame] | 299 | led.name = |
| 300 | of_get_property(child, "label", NULL) ? : child->name; |
| 301 | led.default_trigger = |
| 302 | of_get_property(child, "linux,default-trigger", NULL); |
Ricardo Ribalda Delgado | 56a1740 | 2013-08-14 14:23:50 -0700 | [diff] [blame] | 303 | pca963x_leds[reg] = led; |
| 304 | } |
| 305 | pdata = devm_kzalloc(&client->dev, |
| 306 | sizeof(struct pca963x_platform_data), GFP_KERNEL); |
| 307 | if (!pdata) |
| 308 | return ERR_PTR(-ENOMEM); |
| 309 | |
| 310 | pdata->leds.leds = pca963x_leds; |
Ricardo Ribalda Delgado | 8a6acd64 | 2013-08-14 14:23:51 -0700 | [diff] [blame] | 311 | pdata->leds.num_leds = chip->n_leds; |
Ricardo Ribalda Delgado | 56a1740 | 2013-08-14 14:23:50 -0700 | [diff] [blame] | 312 | |
| 313 | /* default to open-drain unless totem pole (push-pull) is specified */ |
| 314 | if (of_property_read_bool(np, "nxp,totem-pole")) |
| 315 | pdata->outdrv = PCA963X_TOTEM_POLE; |
| 316 | else |
| 317 | pdata->outdrv = PCA963X_OPEN_DRAIN; |
| 318 | |
| 319 | /* default to software blinking unless hardware blinking is specified */ |
| 320 | if (of_property_read_bool(np, "nxp,hw-blink")) |
| 321 | pdata->blink_type = PCA963X_HW_BLINK; |
| 322 | else |
| 323 | pdata->blink_type = PCA963X_SW_BLINK; |
| 324 | |
| 325 | return pdata; |
| 326 | } |
| 327 | |
| 328 | static const struct of_device_id of_pca963x_match[] = { |
| 329 | { .compatible = "nxp,pca9632", }, |
| 330 | { .compatible = "nxp,pca9633", }, |
| 331 | { .compatible = "nxp,pca9634", }, |
Peter Meerwald | 3dfedb9 | 2014-07-02 22:50:34 -0700 | [diff] [blame] | 332 | { .compatible = "nxp,pca9635", }, |
Ricardo Ribalda Delgado | 56a1740 | 2013-08-14 14:23:50 -0700 | [diff] [blame] | 333 | {}, |
| 334 | }; |
| 335 | #else |
| 336 | static struct pca963x_platform_data * |
| 337 | pca963x_dt_init(struct i2c_client *client, struct pca963x_chipdef *chip) |
| 338 | { |
| 339 | return ERR_PTR(-ENODEV); |
| 340 | } |
| 341 | #endif |
| 342 | |
| 343 | static int pca963x_probe(struct i2c_client *client, |
| 344 | const struct i2c_device_id *id) |
| 345 | { |
| 346 | struct pca963x *pca963x_chip; |
| 347 | struct pca963x_led *pca963x; |
| 348 | struct pca963x_platform_data *pdata; |
| 349 | struct pca963x_chipdef *chip; |
| 350 | int i, err; |
| 351 | |
| 352 | chip = &pca963x_chipdefs[id->driver_data]; |
| 353 | pdata = dev_get_platdata(&client->dev); |
| 354 | |
| 355 | if (!pdata) { |
| 356 | pdata = pca963x_dt_init(client, chip); |
| 357 | if (IS_ERR(pdata)) { |
| 358 | dev_warn(&client->dev, "could not parse configuration\n"); |
| 359 | pdata = NULL; |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | if (pdata && (pdata->leds.num_leds < 1 || |
| 364 | pdata->leds.num_leds > chip->n_leds)) { |
| 365 | dev_err(&client->dev, "board info must claim 1-%d LEDs", |
| 366 | chip->n_leds); |
| 367 | return -EINVAL; |
| 368 | } |
| 369 | |
| 370 | pca963x_chip = devm_kzalloc(&client->dev, sizeof(*pca963x_chip), |
| 371 | GFP_KERNEL); |
| 372 | if (!pca963x_chip) |
| 373 | return -ENOMEM; |
| 374 | pca963x = devm_kzalloc(&client->dev, chip->n_leds * sizeof(*pca963x), |
| 375 | GFP_KERNEL); |
| 376 | if (!pca963x) |
| 377 | return -ENOMEM; |
| 378 | |
| 379 | i2c_set_clientdata(client, pca963x_chip); |
| 380 | |
| 381 | mutex_init(&pca963x_chip->mutex); |
| 382 | pca963x_chip->chipdef = chip; |
| 383 | pca963x_chip->client = client; |
| 384 | pca963x_chip->leds = pca963x; |
| 385 | |
| 386 | /* Turn off LEDs by default*/ |
Peter Meerwald | 3dfedb9 | 2014-07-02 22:50:34 -0700 | [diff] [blame] | 387 | for (i = 0; i < chip->n_leds / 4; i++) |
| 388 | i2c_smbus_write_byte_data(client, chip->ledout_base + i, 0x00); |
Ricardo Ribalda Delgado | 56a1740 | 2013-08-14 14:23:50 -0700 | [diff] [blame] | 389 | |
| 390 | for (i = 0; i < chip->n_leds; i++) { |
| 391 | pca963x[i].led_num = i; |
| 392 | pca963x[i].chip = pca963x_chip; |
| 393 | |
| 394 | /* Platform data can specify LED names and default triggers */ |
| 395 | if (pdata && i < pdata->leds.num_leds) { |
| 396 | if (pdata->leds.leds[i].name) |
| 397 | snprintf(pca963x[i].name, |
| 398 | sizeof(pca963x[i].name), "pca963x:%s", |
| 399 | pdata->leds.leds[i].name); |
| 400 | if (pdata->leds.leds[i].default_trigger) |
| 401 | pca963x[i].led_cdev.default_trigger = |
| 402 | pdata->leds.leds[i].default_trigger; |
| 403 | } |
| 404 | if (!pdata || i >= pdata->leds.num_leds || |
| 405 | !pdata->leds.leds[i].name) |
| 406 | snprintf(pca963x[i].name, sizeof(pca963x[i].name), |
| 407 | "pca963x:%d:%.2x:%d", client->adapter->nr, |
| 408 | client->addr, i); |
| 409 | |
| 410 | pca963x[i].led_cdev.name = pca963x[i].name; |
| 411 | pca963x[i].led_cdev.brightness_set = pca963x_led_set; |
| 412 | |
| 413 | if (pdata && pdata->blink_type == PCA963X_HW_BLINK) |
| 414 | pca963x[i].led_cdev.blink_set = pca963x_blink_set; |
| 415 | |
| 416 | INIT_WORK(&pca963x[i].work, pca963x_work); |
| 417 | |
| 418 | err = led_classdev_register(&client->dev, &pca963x[i].led_cdev); |
| 419 | if (err < 0) |
| 420 | goto exit; |
| 421 | } |
| 422 | |
| 423 | /* Disable LED all-call address and set normal mode */ |
| 424 | i2c_smbus_write_byte_data(client, PCA963X_MODE1, 0x00); |
| 425 | |
Peter Meerwald | 0c62f42 | 2014-07-02 22:50:35 -0700 | [diff] [blame] | 426 | if (pdata) { |
| 427 | /* Configure output: open-drain or totem pole (push-pull) */ |
| 428 | if (pdata->outdrv == PCA963X_OPEN_DRAIN) |
| 429 | i2c_smbus_write_byte_data(client, PCA963X_MODE2, 0x01); |
| 430 | else |
| 431 | i2c_smbus_write_byte_data(client, PCA963X_MODE2, 0x05); |
| 432 | } |
Ricardo Ribalda Delgado | 56a1740 | 2013-08-14 14:23:50 -0700 | [diff] [blame] | 433 | |
| 434 | return 0; |
| 435 | |
| 436 | exit: |
| 437 | while (i--) { |
| 438 | led_classdev_unregister(&pca963x[i].led_cdev); |
| 439 | cancel_work_sync(&pca963x[i].work); |
| 440 | } |
| 441 | |
| 442 | return err; |
| 443 | } |
| 444 | |
| 445 | static int pca963x_remove(struct i2c_client *client) |
| 446 | { |
| 447 | struct pca963x *pca963x = i2c_get_clientdata(client); |
| 448 | int i; |
| 449 | |
| 450 | for (i = 0; i < pca963x->chipdef->n_leds; i++) { |
| 451 | led_classdev_unregister(&pca963x->leds[i].led_cdev); |
| 452 | cancel_work_sync(&pca963x->leds[i].work); |
| 453 | } |
| 454 | |
| 455 | return 0; |
| 456 | } |
| 457 | |
| 458 | static struct i2c_driver pca963x_driver = { |
| 459 | .driver = { |
| 460 | .name = "leds-pca963x", |
| 461 | .owner = THIS_MODULE, |
| 462 | .of_match_table = of_match_ptr(of_pca963x_match), |
| 463 | }, |
| 464 | .probe = pca963x_probe, |
| 465 | .remove = pca963x_remove, |
| 466 | .id_table = pca963x_id, |
| 467 | }; |
| 468 | |
| 469 | module_i2c_driver(pca963x_driver); |
| 470 | |
| 471 | MODULE_AUTHOR("Peter Meerwald <p.meerwald@bct-electronic.com>"); |
| 472 | MODULE_DESCRIPTION("PCA963X LED driver"); |
| 473 | MODULE_LICENSE("GPL v2"); |