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Commit | Line | Data |
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75cb2e1d PM |
1 | /* |
2 | * Copyright 2011 bct electronic GmbH | |
af67384f | 3 | * Copyright 2013 Qtechnology/AS |
75cb2e1d PM |
4 | * |
5 | * Author: Peter Meerwald <p.meerwald@bct-electronic.com> | |
af67384f | 6 | * Author: Ricardo Ribalda <ricardo.ribalda@gmail.com> |
75cb2e1d PM |
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) | |
3dfedb9d | 15 | * LED driver for the PCA9634/5 I2C LED driver (7-bit slave address set by hw.) |
75cb2e1d | 16 | * |
8465b018 MG |
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 | |
56a1740c | 24 | * the 'blink_type' member in the platform_data struct to 'PCA963X_HW_BLINK' |
8465b018 | 25 | * or by adding the 'nxp,hw-blink' property to the DTS. |
75cb2e1d PM |
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> | |
75cb2e1d | 35 | #include <linux/slab.h> |
81d22878 | 36 | #include <linux/of.h> |
56a1740c | 37 | #include <linux/platform_data/leds-pca963x.h> |
75cb2e1d PM |
38 | |
39 | /* LED select registers determine the source that drives LED outputs */ | |
56a1740c RRD |
40 | #define PCA963X_LED_OFF 0x0 /* LED driver off */ |
41 | #define PCA963X_LED_ON 0x1 /* LED driver on */ | |
42 | #define PCA963X_LED_PWM 0x2 /* Controlled through PWM */ | |
43 | #define PCA963X_LED_GRP_PWM 0x3 /* Controlled through PWM/GRPPWM */ | |
75cb2e1d | 44 | |
56a1740c | 45 | #define PCA963X_MODE2_DMBLNK 0x20 /* Enable blinking */ |
8465b018 | 46 | |
56a1740c RRD |
47 | #define PCA963X_MODE1 0x00 |
48 | #define PCA963X_MODE2 0x01 | |
49 | #define PCA963X_PWM_BASE 0x02 | |
af67384f | 50 | |
56a1740c | 51 | enum pca963x_type { |
af67384f RRD |
52 | pca9633, |
53 | pca9634, | |
3dfedb9d | 54 | pca9635, |
af67384f RRD |
55 | }; |
56 | ||
56a1740c | 57 | struct pca963x_chipdef { |
af67384f RRD |
58 | u8 grppwm; |
59 | u8 grpfreq; | |
60 | u8 ledout_base; | |
61 | int n_leds; | |
35c7d301 | 62 | unsigned int scaling; |
af67384f RRD |
63 | }; |
64 | ||
56a1740c | 65 | static struct pca963x_chipdef pca963x_chipdefs[] = { |
af67384f RRD |
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 | }, | |
3dfedb9d PM |
78 | [pca9635] = { |
79 | .grppwm = 0x12, | |
80 | .grpfreq = 0x13, | |
81 | .ledout_base = 0x14, | |
82 | .n_leds = 16, | |
83 | }, | |
af67384f | 84 | }; |
75cb2e1d | 85 | |
8465b018 | 86 | /* Total blink period in milliseconds */ |
56a1740c RRD |
87 | #define PCA963X_BLINK_PERIOD_MIN 42 |
88 | #define PCA963X_BLINK_PERIOD_MAX 10667 | |
8465b018 | 89 | |
56a1740c | 90 | static const struct i2c_device_id pca963x_id[] = { |
af67384f RRD |
91 | { "pca9632", pca9633 }, |
92 | { "pca9633", pca9633 }, | |
93 | { "pca9634", pca9634 }, | |
3dfedb9d | 94 | { "pca9635", pca9635 }, |
75cb2e1d PM |
95 | { } |
96 | }; | |
56a1740c | 97 | MODULE_DEVICE_TABLE(i2c, pca963x_id); |
75cb2e1d | 98 | |
56a1740c | 99 | struct pca963x_led; |
a7d0e988 | 100 | |
56a1740c RRD |
101 | struct pca963x { |
102 | struct pca963x_chipdef *chipdef; | |
a7d0e988 RRD |
103 | struct mutex mutex; |
104 | struct i2c_client *client; | |
56a1740c | 105 | struct pca963x_led *leds; |
a8c170b0 | 106 | unsigned long leds_on; |
a7d0e988 RRD |
107 | }; |
108 | ||
56a1740c RRD |
109 | struct pca963x_led { |
110 | struct pca963x *chip; | |
75cb2e1d | 111 | struct led_classdev led_cdev; |
3dfedb9d | 112 | int led_num; /* 0 .. 15 potentially */ |
75cb2e1d | 113 | char name[32]; |
8465b018 MG |
114 | u8 gdc; |
115 | u8 gfrq; | |
75cb2e1d PM |
116 | }; |
117 | ||
5029a2e3 AL |
118 | static int pca963x_brightness(struct pca963x_led *pca963x, |
119 | enum led_brightness brightness) | |
75cb2e1d | 120 | { |
56a1740c RRD |
121 | u8 ledout_addr = pca963x->chip->chipdef->ledout_base |
122 | + (pca963x->led_num / 4); | |
af67384f | 123 | u8 ledout; |
56a1740c | 124 | int shift = 2 * (pca963x->led_num % 4); |
75cb2e1d | 125 | u8 mask = 0x3 << shift; |
5029a2e3 | 126 | int ret; |
75cb2e1d | 127 | |
56a1740c | 128 | ledout = i2c_smbus_read_byte_data(pca963x->chip->client, ledout_addr); |
5029a2e3 | 129 | switch (brightness) { |
75cb2e1d | 130 | case LED_FULL: |
5029a2e3 AL |
131 | ret = i2c_smbus_write_byte_data(pca963x->chip->client, |
132 | ledout_addr, | |
56a1740c | 133 | (ledout & ~mask) | (PCA963X_LED_ON << shift)); |
75cb2e1d PM |
134 | break; |
135 | case LED_OFF: | |
5029a2e3 AL |
136 | ret = i2c_smbus_write_byte_data(pca963x->chip->client, |
137 | ledout_addr, ledout & ~mask); | |
75cb2e1d PM |
138 | break; |
139 | default: | |
5029a2e3 | 140 | ret = i2c_smbus_write_byte_data(pca963x->chip->client, |
56a1740c | 141 | PCA963X_PWM_BASE + pca963x->led_num, |
5029a2e3 AL |
142 | brightness); |
143 | if (ret < 0) | |
a8c170b0 | 144 | return ret; |
5029a2e3 AL |
145 | ret = i2c_smbus_write_byte_data(pca963x->chip->client, |
146 | ledout_addr, | |
56a1740c | 147 | (ledout & ~mask) | (PCA963X_LED_PWM << shift)); |
75cb2e1d PM |
148 | break; |
149 | } | |
a8c170b0 | 150 | |
5029a2e3 | 151 | return ret; |
75cb2e1d PM |
152 | } |
153 | ||
5029a2e3 | 154 | static void pca963x_blink(struct pca963x_led *pca963x) |
8465b018 | 155 | { |
56a1740c RRD |
156 | u8 ledout_addr = pca963x->chip->chipdef->ledout_base + |
157 | (pca963x->led_num / 4); | |
a7d0e988 | 158 | u8 ledout; |
56a1740c RRD |
159 | u8 mode2 = i2c_smbus_read_byte_data(pca963x->chip->client, |
160 | PCA963X_MODE2); | |
161 | int shift = 2 * (pca963x->led_num % 4); | |
8465b018 MG |
162 | u8 mask = 0x3 << shift; |
163 | ||
56a1740c RRD |
164 | i2c_smbus_write_byte_data(pca963x->chip->client, |
165 | pca963x->chip->chipdef->grppwm, pca963x->gdc); | |
8465b018 | 166 | |
56a1740c RRD |
167 | i2c_smbus_write_byte_data(pca963x->chip->client, |
168 | pca963x->chip->chipdef->grpfreq, pca963x->gfrq); | |
8465b018 | 169 | |
56a1740c RRD |
170 | if (!(mode2 & PCA963X_MODE2_DMBLNK)) |
171 | i2c_smbus_write_byte_data(pca963x->chip->client, PCA963X_MODE2, | |
172 | mode2 | PCA963X_MODE2_DMBLNK); | |
8465b018 | 173 | |
56a1740c RRD |
174 | mutex_lock(&pca963x->chip->mutex); |
175 | ledout = i2c_smbus_read_byte_data(pca963x->chip->client, ledout_addr); | |
176 | if ((ledout & mask) != (PCA963X_LED_GRP_PWM << shift)) | |
177 | i2c_smbus_write_byte_data(pca963x->chip->client, ledout_addr, | |
178 | (ledout & ~mask) | (PCA963X_LED_GRP_PWM << shift)); | |
179 | mutex_unlock(&pca963x->chip->mutex); | |
8465b018 MG |
180 | } |
181 | ||
a8c170b0 MR |
182 | static int pca963x_power_state(struct pca963x_led *pca963x) |
183 | { | |
184 | unsigned long *leds_on = &pca963x->chip->leds_on; | |
185 | unsigned long cached_leds = pca963x->chip->leds_on; | |
186 | ||
187 | if (pca963x->led_cdev.brightness) | |
188 | set_bit(pca963x->led_num, leds_on); | |
189 | else | |
190 | clear_bit(pca963x->led_num, leds_on); | |
191 | ||
192 | if (!(*leds_on) != !cached_leds) | |
193 | return i2c_smbus_write_byte_data(pca963x->chip->client, | |
194 | PCA963X_MODE1, *leds_on ? 0 : BIT(4)); | |
195 | ||
196 | return 0; | |
197 | } | |
198 | ||
5029a2e3 | 199 | static int pca963x_led_set(struct led_classdev *led_cdev, |
75cb2e1d PM |
200 | enum led_brightness value) |
201 | { | |
56a1740c | 202 | struct pca963x_led *pca963x; |
a8c170b0 | 203 | int ret; |
75cb2e1d | 204 | |
56a1740c | 205 | pca963x = container_of(led_cdev, struct pca963x_led, led_cdev); |
75cb2e1d | 206 | |
a8c170b0 MR |
207 | mutex_lock(&pca963x->chip->mutex); |
208 | ||
209 | ret = pca963x_brightness(pca963x, value); | |
210 | if (ret < 0) | |
211 | goto unlock; | |
212 | ret = pca963x_power_state(pca963x); | |
213 | ||
214 | unlock: | |
215 | mutex_unlock(&pca963x->chip->mutex); | |
216 | return ret; | |
75cb2e1d PM |
217 | } |
218 | ||
35c7d301 MR |
219 | static unsigned int pca963x_period_scale(struct pca963x_led *pca963x, |
220 | unsigned int val) | |
221 | { | |
222 | unsigned int scaling = pca963x->chip->chipdef->scaling; | |
223 | ||
224 | return scaling ? DIV_ROUND_CLOSEST(val * scaling, 1000) : val; | |
225 | } | |
226 | ||
56a1740c | 227 | static int pca963x_blink_set(struct led_classdev *led_cdev, |
8465b018 MG |
228 | unsigned long *delay_on, unsigned long *delay_off) |
229 | { | |
56a1740c | 230 | struct pca963x_led *pca963x; |
8465b018 MG |
231 | unsigned long time_on, time_off, period; |
232 | u8 gdc, gfrq; | |
233 | ||
56a1740c | 234 | pca963x = container_of(led_cdev, struct pca963x_led, led_cdev); |
8465b018 MG |
235 | |
236 | time_on = *delay_on; | |
237 | time_off = *delay_off; | |
238 | ||
239 | /* If both zero, pick reasonable defaults of 500ms each */ | |
240 | if (!time_on && !time_off) { | |
241 | time_on = 500; | |
242 | time_off = 500; | |
243 | } | |
244 | ||
35c7d301 | 245 | period = pca963x_period_scale(pca963x, time_on + time_off); |
8465b018 MG |
246 | |
247 | /* If period not supported by hardware, default to someting sane. */ | |
56a1740c RRD |
248 | if ((period < PCA963X_BLINK_PERIOD_MIN) || |
249 | (period > PCA963X_BLINK_PERIOD_MAX)) { | |
8465b018 MG |
250 | time_on = 500; |
251 | time_off = 500; | |
35c7d301 | 252 | period = pca963x_period_scale(pca963x, 1000); |
8465b018 MG |
253 | } |
254 | ||
255 | /* | |
256 | * From manual: duty cycle = (GDC / 256) -> | |
257 | * (time_on / period) = (GDC / 256) -> | |
258 | * GDC = ((time_on * 256) / period) | |
259 | */ | |
35c7d301 | 260 | gdc = (pca963x_period_scale(pca963x, time_on) * 256) / period; |
8465b018 MG |
261 | |
262 | /* | |
263 | * From manual: period = ((GFRQ + 1) / 24) in seconds. | |
264 | * So, period (in ms) = (((GFRQ + 1) / 24) * 1000) -> | |
265 | * GFRQ = ((period * 24 / 1000) - 1) | |
266 | */ | |
267 | gfrq = (period * 24 / 1000) - 1; | |
268 | ||
56a1740c RRD |
269 | pca963x->gdc = gdc; |
270 | pca963x->gfrq = gfrq; | |
8465b018 | 271 | |
5029a2e3 | 272 | pca963x_blink(pca963x); |
8465b018 MG |
273 | |
274 | *delay_on = time_on; | |
275 | *delay_off = time_off; | |
276 | ||
277 | return 0; | |
278 | } | |
279 | ||
81d22878 | 280 | #if IS_ENABLED(CONFIG_OF) |
56a1740c RRD |
281 | static struct pca963x_platform_data * |
282 | pca963x_dt_init(struct i2c_client *client, struct pca963x_chipdef *chip) | |
81d22878 TL |
283 | { |
284 | struct device_node *np = client->dev.of_node, *child; | |
56a1740c RRD |
285 | struct pca963x_platform_data *pdata; |
286 | struct led_info *pca963x_leds; | |
81d22878 TL |
287 | int count; |
288 | ||
289 | count = of_get_child_count(np); | |
af67384f | 290 | if (!count || count > chip->n_leds) |
81d22878 TL |
291 | return ERR_PTR(-ENODEV); |
292 | ||
56a1740c | 293 | pca963x_leds = devm_kzalloc(&client->dev, |
af67384f | 294 | sizeof(struct led_info) * chip->n_leds, GFP_KERNEL); |
56a1740c | 295 | if (!pca963x_leds) |
81d22878 TL |
296 | return ERR_PTR(-ENOMEM); |
297 | ||
298 | for_each_child_of_node(np, child) { | |
a44b0f5e | 299 | struct led_info led = {}; |
81d22878 TL |
300 | u32 reg; |
301 | int res; | |
302 | ||
8a6acd64 RRD |
303 | res = of_property_read_u32(child, "reg", ®); |
304 | if ((res != 0) || (reg >= chip->n_leds)) | |
305 | continue; | |
81d22878 TL |
306 | led.name = |
307 | of_get_property(child, "label", NULL) ? : child->name; | |
308 | led.default_trigger = | |
309 | of_get_property(child, "linux,default-trigger", NULL); | |
56a1740c | 310 | pca963x_leds[reg] = led; |
81d22878 TL |
311 | } |
312 | pdata = devm_kzalloc(&client->dev, | |
56a1740c | 313 | sizeof(struct pca963x_platform_data), GFP_KERNEL); |
81d22878 TL |
314 | if (!pdata) |
315 | return ERR_PTR(-ENOMEM); | |
316 | ||
56a1740c | 317 | pdata->leds.leds = pca963x_leds; |
8a6acd64 | 318 | pdata->leds.num_leds = chip->n_leds; |
81d22878 TL |
319 | |
320 | /* default to open-drain unless totem pole (push-pull) is specified */ | |
321 | if (of_property_read_bool(np, "nxp,totem-pole")) | |
56a1740c | 322 | pdata->outdrv = PCA963X_TOTEM_POLE; |
81d22878 | 323 | else |
56a1740c | 324 | pdata->outdrv = PCA963X_OPEN_DRAIN; |
81d22878 | 325 | |
8465b018 MG |
326 | /* default to software blinking unless hardware blinking is specified */ |
327 | if (of_property_read_bool(np, "nxp,hw-blink")) | |
56a1740c | 328 | pdata->blink_type = PCA963X_HW_BLINK; |
8465b018 | 329 | else |
56a1740c | 330 | pdata->blink_type = PCA963X_SW_BLINK; |
8465b018 | 331 | |
35c7d301 MR |
332 | if (of_property_read_u32(np, "nxp,period-scale", &chip->scaling)) |
333 | chip->scaling = 1000; | |
334 | ||
81d22878 TL |
335 | return pdata; |
336 | } | |
337 | ||
56a1740c | 338 | static const struct of_device_id of_pca963x_match[] = { |
af67384f RRD |
339 | { .compatible = "nxp,pca9632", }, |
340 | { .compatible = "nxp,pca9633", }, | |
341 | { .compatible = "nxp,pca9634", }, | |
3dfedb9d | 342 | { .compatible = "nxp,pca9635", }, |
81d22878 TL |
343 | {}, |
344 | }; | |
4d59ed85 | 345 | MODULE_DEVICE_TABLE(of, of_pca963x_match); |
81d22878 | 346 | #else |
56a1740c RRD |
347 | static struct pca963x_platform_data * |
348 | pca963x_dt_init(struct i2c_client *client, struct pca963x_chipdef *chip) | |
81d22878 TL |
349 | { |
350 | return ERR_PTR(-ENODEV); | |
351 | } | |
352 | #endif | |
353 | ||
56a1740c | 354 | static int pca963x_probe(struct i2c_client *client, |
75cb2e1d PM |
355 | const struct i2c_device_id *id) |
356 | { | |
56a1740c RRD |
357 | struct pca963x *pca963x_chip; |
358 | struct pca963x_led *pca963x; | |
359 | struct pca963x_platform_data *pdata; | |
360 | struct pca963x_chipdef *chip; | |
75cb2e1d PM |
361 | int i, err; |
362 | ||
56a1740c | 363 | chip = &pca963x_chipdefs[id->driver_data]; |
87aae1ea | 364 | pdata = dev_get_platdata(&client->dev); |
75cb2e1d | 365 | |
81d22878 | 366 | if (!pdata) { |
56a1740c | 367 | pdata = pca963x_dt_init(client, chip); |
81d22878 TL |
368 | if (IS_ERR(pdata)) { |
369 | dev_warn(&client->dev, "could not parse configuration\n"); | |
370 | pdata = NULL; | |
371 | } | |
372 | } | |
373 | ||
af67384f RRD |
374 | if (pdata && (pdata->leds.num_leds < 1 || |
375 | pdata->leds.num_leds > chip->n_leds)) { | |
376 | dev_err(&client->dev, "board info must claim 1-%d LEDs", | |
377 | chip->n_leds); | |
378 | return -EINVAL; | |
75cb2e1d PM |
379 | } |
380 | ||
56a1740c | 381 | pca963x_chip = devm_kzalloc(&client->dev, sizeof(*pca963x_chip), |
a7d0e988 | 382 | GFP_KERNEL); |
56a1740c | 383 | if (!pca963x_chip) |
a7d0e988 | 384 | return -ENOMEM; |
56a1740c | 385 | pca963x = devm_kzalloc(&client->dev, chip->n_leds * sizeof(*pca963x), |
af67384f | 386 | GFP_KERNEL); |
56a1740c | 387 | if (!pca963x) |
75cb2e1d PM |
388 | return -ENOMEM; |
389 | ||
56a1740c | 390 | i2c_set_clientdata(client, pca963x_chip); |
a7d0e988 | 391 | |
56a1740c RRD |
392 | mutex_init(&pca963x_chip->mutex); |
393 | pca963x_chip->chipdef = chip; | |
394 | pca963x_chip->client = client; | |
395 | pca963x_chip->leds = pca963x; | |
a7d0e988 RRD |
396 | |
397 | /* Turn off LEDs by default*/ | |
3dfedb9d PM |
398 | for (i = 0; i < chip->n_leds / 4; i++) |
399 | i2c_smbus_write_byte_data(client, chip->ledout_base + i, 0x00); | |
75cb2e1d | 400 | |
af67384f | 401 | for (i = 0; i < chip->n_leds; i++) { |
56a1740c RRD |
402 | pca963x[i].led_num = i; |
403 | pca963x[i].chip = pca963x_chip; | |
75cb2e1d PM |
404 | |
405 | /* Platform data can specify LED names and default triggers */ | |
2f73c392 PM |
406 | if (pdata && i < pdata->leds.num_leds) { |
407 | if (pdata->leds.leds[i].name) | |
56a1740c RRD |
408 | snprintf(pca963x[i].name, |
409 | sizeof(pca963x[i].name), "pca963x:%s", | |
2f73c392 PM |
410 | pdata->leds.leds[i].name); |
411 | if (pdata->leds.leds[i].default_trigger) | |
56a1740c | 412 | pca963x[i].led_cdev.default_trigger = |
2f73c392 | 413 | pdata->leds.leds[i].default_trigger; |
75cb2e1d | 414 | } |
a5cd98b7 RRD |
415 | if (!pdata || i >= pdata->leds.num_leds || |
416 | !pdata->leds.leds[i].name) | |
56a1740c RRD |
417 | snprintf(pca963x[i].name, sizeof(pca963x[i].name), |
418 | "pca963x:%d:%.2x:%d", client->adapter->nr, | |
a5cd98b7 | 419 | client->addr, i); |
75cb2e1d | 420 | |
56a1740c | 421 | pca963x[i].led_cdev.name = pca963x[i].name; |
5029a2e3 | 422 | pca963x[i].led_cdev.brightness_set_blocking = pca963x_led_set; |
75cb2e1d | 423 | |
56a1740c RRD |
424 | if (pdata && pdata->blink_type == PCA963X_HW_BLINK) |
425 | pca963x[i].led_cdev.blink_set = pca963x_blink_set; | |
8465b018 | 426 | |
56a1740c | 427 | err = led_classdev_register(&client->dev, &pca963x[i].led_cdev); |
75cb2e1d PM |
428 | if (err < 0) |
429 | goto exit; | |
430 | } | |
431 | ||
a8c170b0 MR |
432 | /* Disable LED all-call address, and power down initially */ |
433 | i2c_smbus_write_byte_data(client, PCA963X_MODE1, BIT(4)); | |
75cb2e1d | 434 | |
0c62f42d PM |
435 | if (pdata) { |
436 | /* Configure output: open-drain or totem pole (push-pull) */ | |
437 | if (pdata->outdrv == PCA963X_OPEN_DRAIN) | |
438 | i2c_smbus_write_byte_data(client, PCA963X_MODE2, 0x01); | |
439 | else | |
440 | i2c_smbus_write_byte_data(client, PCA963X_MODE2, 0x05); | |
441 | } | |
2f73c392 | 442 | |
75cb2e1d PM |
443 | return 0; |
444 | ||
445 | exit: | |
5029a2e3 | 446 | while (i--) |
56a1740c | 447 | led_classdev_unregister(&pca963x[i].led_cdev); |
75cb2e1d | 448 | |
75cb2e1d PM |
449 | return err; |
450 | } | |
451 | ||
56a1740c | 452 | static int pca963x_remove(struct i2c_client *client) |
75cb2e1d | 453 | { |
56a1740c | 454 | struct pca963x *pca963x = i2c_get_clientdata(client); |
75cb2e1d PM |
455 | int i; |
456 | ||
5029a2e3 | 457 | for (i = 0; i < pca963x->chipdef->n_leds; i++) |
56a1740c | 458 | led_classdev_unregister(&pca963x->leds[i].led_cdev); |
75cb2e1d | 459 | |
75cb2e1d PM |
460 | return 0; |
461 | } | |
462 | ||
56a1740c | 463 | static struct i2c_driver pca963x_driver = { |
75cb2e1d | 464 | .driver = { |
56a1740c | 465 | .name = "leds-pca963x", |
56a1740c | 466 | .of_match_table = of_match_ptr(of_pca963x_match), |
75cb2e1d | 467 | }, |
56a1740c RRD |
468 | .probe = pca963x_probe, |
469 | .remove = pca963x_remove, | |
470 | .id_table = pca963x_id, | |
75cb2e1d PM |
471 | }; |
472 | ||
56a1740c | 473 | module_i2c_driver(pca963x_driver); |
75cb2e1d PM |
474 | |
475 | MODULE_AUTHOR("Peter Meerwald <p.meerwald@bct-electronic.com>"); | |
56a1740c | 476 | MODULE_DESCRIPTION("PCA963X LED driver"); |
75cb2e1d | 477 | MODULE_LICENSE("GPL v2"); |