Lines Matching +full:led +full:- +full:0
2 * leds-bd2802.c - RGB LED Driver
11 * Datasheet: http://www.rohm.com/products/databook/driver/pdf/bd2802gu-e.pdf
20 #include <linux/leds-bd2802.h>
24 #define LED_CTL(rgb2en, rgb1en) ((rgb2en) << 4 | ((rgb1en) << 0))
26 #define BD2802_LED_OFFSET 0xa
27 #define BD2802_COLOR_OFFSET 0x3
29 #define BD2802_REG_CLKSETUP 0x00
30 #define BD2802_REG_CONTROL 0x01
31 #define BD2802_REG_HOURSETUP 0x02
32 #define BD2802_REG_CURRENT1SETUP 0x03
33 #define BD2802_REG_CURRENT2SETUP 0x04
34 #define BD2802_REG_WAVEPATTERN 0x05
36 #define BD2802_CURRENT_032 0x10 /* 3.2mA */
37 #define BD2802_CURRENT_000 0x00 /* 0.0mA */
39 #define BD2802_PATTERN_FULL 0x07
40 #define BD2802_PATTERN_HALF 0x03
61 * State '0' : 'off'
76 struct led_state led[2]; member
107 /*--------------------------------------------------------------*/
109 /*--------------------------------------------------------------*/
111 static inline int bd2802_is_rgb_off(struct bd2802_led *led, enum led_ids id, in bd2802_is_rgb_off() argument
116 return !led->led[id].r; in bd2802_is_rgb_off()
118 return !led->led[id].g; in bd2802_is_rgb_off()
120 return !led->led[id].b; in bd2802_is_rgb_off()
122 dev_err(&led->client->dev, "%s: Invalid color\n", __func__); in bd2802_is_rgb_off()
123 return -EINVAL; in bd2802_is_rgb_off()
127 static inline int bd2802_is_led_off(struct bd2802_led *led, enum led_ids id) in bd2802_is_led_off() argument
129 if (led->led[id].r || led->led[id].g || led->led[id].b) in bd2802_is_led_off()
130 return 0; in bd2802_is_led_off()
135 static inline int bd2802_is_all_off(struct bd2802_led *led) in bd2802_is_all_off() argument
139 for (i = 0; i < LED_NUM; i++) in bd2802_is_all_off()
140 if (!bd2802_is_led_off(led, i)) in bd2802_is_all_off()
141 return 0; in bd2802_is_all_off()
158 /*--------------------------------------------------------------*/
160 /*--------------------------------------------------------------*/
165 if (ret >= 0) in bd2802_write_byte()
166 return 0; in bd2802_write_byte()
168 dev_err(&client->dev, "%s: reg 0x%x, val 0x%x, err %d\n", in bd2802_write_byte()
174 static void bd2802_update_state(struct bd2802_led *led, enum led_ids id, in bd2802_update_state() argument
180 for (i = 0; i < LED_NUM; i++) { in bd2802_update_state()
184 led->led[i].r = led_bit; in bd2802_update_state()
187 led->led[i].g = led_bit; in bd2802_update_state()
190 led->led[i].b = led_bit; in bd2802_update_state()
193 dev_err(&led->client->dev, in bd2802_update_state()
203 if (!bd2802_is_led_off(led, id)) in bd2802_update_state()
206 if (bd2802_is_all_off(led) && !led->adf_on) { in bd2802_update_state()
207 gpio_set_value(led->pdata->reset_gpio, 0); in bd2802_update_state()
212 * In this case, other led is turned on, and current led is turned in bd2802_update_state()
213 * off. So set RGB LED Control register to stop the current RGB LED in bd2802_update_state()
215 value = (id == LED1) ? LED_CTL(1, 0) : LED_CTL(0, 1); in bd2802_update_state()
216 bd2802_write_byte(led->client, BD2802_REG_CONTROL, value); in bd2802_update_state()
219 static void bd2802_configure(struct bd2802_led *led) in bd2802_configure() argument
221 struct bd2802_led_platform_data *pdata = led->pdata; in bd2802_configure()
225 bd2802_write_byte(led->client, reg, pdata->rgb_time); in bd2802_configure()
228 bd2802_write_byte(led->client, reg, pdata->rgb_time); in bd2802_configure()
231 static void bd2802_reset_cancel(struct bd2802_led *led) in bd2802_reset_cancel() argument
233 gpio_set_value(led->pdata->reset_gpio, 1); in bd2802_reset_cancel()
235 bd2802_configure(led); in bd2802_reset_cancel()
238 static void bd2802_enable(struct bd2802_led *led, enum led_ids id) in bd2802_enable() argument
243 other_led_on = !bd2802_is_led_off(led, other_led); in bd2802_enable()
249 bd2802_write_byte(led->client, BD2802_REG_CONTROL, value); in bd2802_enable()
252 static void bd2802_set_on(struct bd2802_led *led, enum led_ids id, in bd2802_set_on() argument
257 if (bd2802_is_all_off(led) && !led->adf_on) in bd2802_set_on()
258 bd2802_reset_cancel(led); in bd2802_set_on()
261 bd2802_write_byte(led->client, reg, led->rgb_current); in bd2802_set_on()
263 bd2802_write_byte(led->client, reg, BD2802_CURRENT_000); in bd2802_set_on()
265 bd2802_write_byte(led->client, reg, BD2802_PATTERN_FULL); in bd2802_set_on()
267 bd2802_enable(led, id); in bd2802_set_on()
268 bd2802_update_state(led, id, color, BD2802_ON); in bd2802_set_on()
271 static void bd2802_set_blink(struct bd2802_led *led, enum led_ids id, in bd2802_set_blink() argument
276 if (bd2802_is_all_off(led) && !led->adf_on) in bd2802_set_blink()
277 bd2802_reset_cancel(led); in bd2802_set_blink()
280 bd2802_write_byte(led->client, reg, BD2802_CURRENT_000); in bd2802_set_blink()
282 bd2802_write_byte(led->client, reg, led->rgb_current); in bd2802_set_blink()
284 bd2802_write_byte(led->client, reg, led->wave_pattern); in bd2802_set_blink()
286 bd2802_enable(led, id); in bd2802_set_blink()
287 bd2802_update_state(led, id, color, BD2802_BLINK); in bd2802_set_blink()
290 static void bd2802_turn_on(struct bd2802_led *led, enum led_ids id, in bd2802_turn_on() argument
294 dev_err(&led->client->dev, in bd2802_turn_on()
300 bd2802_set_blink(led, id, color); in bd2802_turn_on()
302 bd2802_set_on(led, id, color); in bd2802_turn_on()
305 static void bd2802_turn_off(struct bd2802_led *led, enum led_ids id, in bd2802_turn_off() argument
310 if (bd2802_is_rgb_off(led, id, color)) in bd2802_turn_off()
314 bd2802_write_byte(led->client, reg, BD2802_CURRENT_000); in bd2802_turn_off()
316 bd2802_write_byte(led->client, reg, BD2802_CURRENT_000); in bd2802_turn_off()
318 bd2802_update_state(led, id, color, BD2802_OFF); in bd2802_turn_off()
325 struct bd2802_led *led = i2c_get_clientdata(to_i2c_client(dev));\
329 return -EINVAL; \
333 down_write(&led->rwsem); \
334 bd2802_write_byte(led->client, reg_addr, (u8) val); \
335 up_write(&led->rwsem); \
343 BD2802_SET_REGISTER(0x00, "0x00");
344 BD2802_SET_REGISTER(0x01, "0x01");
345 BD2802_SET_REGISTER(0x02, "0x02");
346 BD2802_SET_REGISTER(0x03, "0x03");
347 BD2802_SET_REGISTER(0x04, "0x04");
348 BD2802_SET_REGISTER(0x05, "0x05");
349 BD2802_SET_REGISTER(0x06, "0x06");
350 BD2802_SET_REGISTER(0x07, "0x07");
351 BD2802_SET_REGISTER(0x08, "0x08");
352 BD2802_SET_REGISTER(0x09, "0x09");
353 BD2802_SET_REGISTER(0x0a, "0x0a");
354 BD2802_SET_REGISTER(0x0b, "0x0b");
355 BD2802_SET_REGISTER(0x0c, "0x0c");
356 BD2802_SET_REGISTER(0x0d, "0x0d");
357 BD2802_SET_REGISTER(0x0e, "0x0e");
358 BD2802_SET_REGISTER(0x0f, "0x0f");
359 BD2802_SET_REGISTER(0x10, "0x10");
360 BD2802_SET_REGISTER(0x11, "0x11");
361 BD2802_SET_REGISTER(0x12, "0x12");
362 BD2802_SET_REGISTER(0x13, "0x13");
363 BD2802_SET_REGISTER(0x14, "0x14");
364 BD2802_SET_REGISTER(0x15, "0x15");
391 static void bd2802_enable_adv_conf(struct bd2802_led *led) in bd2802_enable_adv_conf() argument
395 for (i = 0; i < ARRAY_SIZE(bd2802_addr_attributes); i++) { in bd2802_enable_adv_conf()
396 ret = device_create_file(&led->client->dev, in bd2802_enable_adv_conf()
399 dev_err(&led->client->dev, "failed: sysfs file %s\n", in bd2802_enable_adv_conf()
400 bd2802_addr_attributes[i]->attr.name); in bd2802_enable_adv_conf()
405 if (bd2802_is_all_off(led)) in bd2802_enable_adv_conf()
406 bd2802_reset_cancel(led); in bd2802_enable_adv_conf()
408 led->adf_on = 1; in bd2802_enable_adv_conf()
413 for (i--; i >= 0; i--) in bd2802_enable_adv_conf()
414 device_remove_file(&led->client->dev, in bd2802_enable_adv_conf()
418 static void bd2802_disable_adv_conf(struct bd2802_led *led) in bd2802_disable_adv_conf() argument
422 for (i = 0; i < ARRAY_SIZE(bd2802_addr_attributes); i++) in bd2802_disable_adv_conf()
423 device_remove_file(&led->client->dev, in bd2802_disable_adv_conf()
426 if (bd2802_is_all_off(led)) in bd2802_disable_adv_conf()
427 gpio_set_value(led->pdata->reset_gpio, 0); in bd2802_disable_adv_conf()
429 led->adf_on = 0; in bd2802_disable_adv_conf()
435 struct bd2802_led *led = i2c_get_clientdata(to_i2c_client(dev)); in bd2802_show_adv_conf() local
438 down_read(&led->rwsem); in bd2802_show_adv_conf()
439 if (led->adf_on) in bd2802_show_adv_conf()
443 up_read(&led->rwsem); in bd2802_show_adv_conf()
451 struct bd2802_led *led = i2c_get_clientdata(to_i2c_client(dev)); in bd2802_store_adv_conf() local
454 return -EINVAL; in bd2802_store_adv_conf()
456 down_write(&led->rwsem); in bd2802_store_adv_conf()
457 if (!led->adf_on && !strncmp(buf, "on", 2)) in bd2802_store_adv_conf()
458 bd2802_enable_adv_conf(led); in bd2802_store_adv_conf()
459 else if (led->adf_on && !strncmp(buf, "off", 3)) in bd2802_store_adv_conf()
460 bd2802_disable_adv_conf(led); in bd2802_store_adv_conf()
461 up_write(&led->rwsem); in bd2802_store_adv_conf()
479 struct bd2802_led *led = i2c_get_clientdata(to_i2c_client(dev));\
481 down_read(&led->rwsem); \
482 ret = sprintf(buf, "0x%02x\n", led->attr_name); \
483 up_read(&led->rwsem); \
489 struct bd2802_led *led = i2c_get_clientdata(to_i2c_client(dev));\
493 return -EINVAL; \
497 down_write(&led->rwsem); \
498 led->attr_name = val; \
499 up_write(&led->rwsem); \
524 struct bd2802_led *led = \
526 led->led_id = id; \
527 led->color = clr; \
529 led->state = BD2802_OFF; \
530 bd2802_turn_off(led, led->led_id, led->color); \
532 led->state = BD2802_ON; \
533 bd2802_turn_on(led, led->led_id, led->color, BD2802_ON);\
535 return 0; \
540 struct bd2802_led *led = \
542 if (*delay_on == 0 || *delay_off == 0) \
543 return -EINVAL; \
544 led->led_id = id; \
545 led->color = clr; \
546 led->state = BD2802_BLINK; \
547 bd2802_turn_on(led, led->led_id, led->color, BD2802_BLINK); \
548 return 0; \
558 static int bd2802_register_led_classdev(struct bd2802_led *led) in bd2802_register_led_classdev() argument
562 led->cdev_led1r.name = "led1_R"; in bd2802_register_led_classdev()
563 led->cdev_led1r.brightness = LED_OFF; in bd2802_register_led_classdev()
564 led->cdev_led1r.brightness_set_blocking = bd2802_set_led1r_brightness; in bd2802_register_led_classdev()
565 led->cdev_led1r.blink_set = bd2802_set_led1r_blink; in bd2802_register_led_classdev()
567 ret = led_classdev_register(&led->client->dev, &led->cdev_led1r); in bd2802_register_led_classdev()
568 if (ret < 0) { in bd2802_register_led_classdev()
569 dev_err(&led->client->dev, "couldn't register LED %s\n", in bd2802_register_led_classdev()
570 led->cdev_led1r.name); in bd2802_register_led_classdev()
574 led->cdev_led1g.name = "led1_G"; in bd2802_register_led_classdev()
575 led->cdev_led1g.brightness = LED_OFF; in bd2802_register_led_classdev()
576 led->cdev_led1g.brightness_set_blocking = bd2802_set_led1g_brightness; in bd2802_register_led_classdev()
577 led->cdev_led1g.blink_set = bd2802_set_led1g_blink; in bd2802_register_led_classdev()
579 ret = led_classdev_register(&led->client->dev, &led->cdev_led1g); in bd2802_register_led_classdev()
580 if (ret < 0) { in bd2802_register_led_classdev()
581 dev_err(&led->client->dev, "couldn't register LED %s\n", in bd2802_register_led_classdev()
582 led->cdev_led1g.name); in bd2802_register_led_classdev()
586 led->cdev_led1b.name = "led1_B"; in bd2802_register_led_classdev()
587 led->cdev_led1b.brightness = LED_OFF; in bd2802_register_led_classdev()
588 led->cdev_led1b.brightness_set_blocking = bd2802_set_led1b_brightness; in bd2802_register_led_classdev()
589 led->cdev_led1b.blink_set = bd2802_set_led1b_blink; in bd2802_register_led_classdev()
591 ret = led_classdev_register(&led->client->dev, &led->cdev_led1b); in bd2802_register_led_classdev()
592 if (ret < 0) { in bd2802_register_led_classdev()
593 dev_err(&led->client->dev, "couldn't register LED %s\n", in bd2802_register_led_classdev()
594 led->cdev_led1b.name); in bd2802_register_led_classdev()
598 led->cdev_led2r.name = "led2_R"; in bd2802_register_led_classdev()
599 led->cdev_led2r.brightness = LED_OFF; in bd2802_register_led_classdev()
600 led->cdev_led2r.brightness_set_blocking = bd2802_set_led2r_brightness; in bd2802_register_led_classdev()
601 led->cdev_led2r.blink_set = bd2802_set_led2r_blink; in bd2802_register_led_classdev()
603 ret = led_classdev_register(&led->client->dev, &led->cdev_led2r); in bd2802_register_led_classdev()
604 if (ret < 0) { in bd2802_register_led_classdev()
605 dev_err(&led->client->dev, "couldn't register LED %s\n", in bd2802_register_led_classdev()
606 led->cdev_led2r.name); in bd2802_register_led_classdev()
610 led->cdev_led2g.name = "led2_G"; in bd2802_register_led_classdev()
611 led->cdev_led2g.brightness = LED_OFF; in bd2802_register_led_classdev()
612 led->cdev_led2g.brightness_set_blocking = bd2802_set_led2g_brightness; in bd2802_register_led_classdev()
613 led->cdev_led2g.blink_set = bd2802_set_led2g_blink; in bd2802_register_led_classdev()
615 ret = led_classdev_register(&led->client->dev, &led->cdev_led2g); in bd2802_register_led_classdev()
616 if (ret < 0) { in bd2802_register_led_classdev()
617 dev_err(&led->client->dev, "couldn't register LED %s\n", in bd2802_register_led_classdev()
618 led->cdev_led2g.name); in bd2802_register_led_classdev()
622 led->cdev_led2b.name = "led2_B"; in bd2802_register_led_classdev()
623 led->cdev_led2b.brightness = LED_OFF; in bd2802_register_led_classdev()
624 led->cdev_led2b.brightness_set_blocking = bd2802_set_led2b_brightness; in bd2802_register_led_classdev()
625 led->cdev_led2b.blink_set = bd2802_set_led2b_blink; in bd2802_register_led_classdev()
626 led->cdev_led2b.flags |= LED_CORE_SUSPENDRESUME; in bd2802_register_led_classdev()
628 ret = led_classdev_register(&led->client->dev, &led->cdev_led2b); in bd2802_register_led_classdev()
629 if (ret < 0) { in bd2802_register_led_classdev()
630 dev_err(&led->client->dev, "couldn't register LED %s\n", in bd2802_register_led_classdev()
631 led->cdev_led2b.name); in bd2802_register_led_classdev()
635 return 0; in bd2802_register_led_classdev()
638 led_classdev_unregister(&led->cdev_led2g); in bd2802_register_led_classdev()
640 led_classdev_unregister(&led->cdev_led2r); in bd2802_register_led_classdev()
642 led_classdev_unregister(&led->cdev_led1b); in bd2802_register_led_classdev()
644 led_classdev_unregister(&led->cdev_led1g); in bd2802_register_led_classdev()
646 led_classdev_unregister(&led->cdev_led1r); in bd2802_register_led_classdev()
652 static void bd2802_unregister_led_classdev(struct bd2802_led *led) in bd2802_unregister_led_classdev() argument
654 led_classdev_unregister(&led->cdev_led2b); in bd2802_unregister_led_classdev()
655 led_classdev_unregister(&led->cdev_led2g); in bd2802_unregister_led_classdev()
656 led_classdev_unregister(&led->cdev_led2r); in bd2802_unregister_led_classdev()
657 led_classdev_unregister(&led->cdev_led1b); in bd2802_unregister_led_classdev()
658 led_classdev_unregister(&led->cdev_led1g); in bd2802_unregister_led_classdev()
659 led_classdev_unregister(&led->cdev_led1r); in bd2802_unregister_led_classdev()
665 struct bd2802_led *led; in bd2802_probe() local
669 led = devm_kzalloc(&client->dev, sizeof(struct bd2802_led), GFP_KERNEL); in bd2802_probe()
670 if (!led) in bd2802_probe()
671 return -ENOMEM; in bd2802_probe()
673 led->client = client; in bd2802_probe()
674 pdata = led->pdata = dev_get_platdata(&client->dev); in bd2802_probe()
675 i2c_set_clientdata(client, led); in bd2802_probe()
678 gpio_request_one(pdata->reset_gpio, GPIOF_OUT_INIT_HIGH, "RGB_RESETB"); in bd2802_probe()
684 ret = bd2802_write_byte(client, BD2802_REG_CLKSETUP, 0x00); in bd2802_probe()
685 if (ret < 0) { in bd2802_probe()
686 dev_err(&client->dev, "failed to detect device\n"); in bd2802_probe()
689 dev_info(&client->dev, "return 0x%02x\n", ret); in bd2802_probe()
692 gpio_set_value(led->pdata->reset_gpio, 0); in bd2802_probe()
695 led->wave_pattern = BD2802_PATTERN_HALF; in bd2802_probe()
696 led->rgb_current = BD2802_CURRENT_032; in bd2802_probe()
698 init_rwsem(&led->rwsem); in bd2802_probe()
700 for (i = 0; i < ARRAY_SIZE(bd2802_attributes); i++) { in bd2802_probe()
701 ret = device_create_file(&led->client->dev, in bd2802_probe()
704 dev_err(&led->client->dev, "failed: sysfs file %s\n", in bd2802_probe()
705 bd2802_attributes[i]->attr.name); in bd2802_probe()
710 ret = bd2802_register_led_classdev(led); in bd2802_probe()
711 if (ret < 0) in bd2802_probe()
714 return 0; in bd2802_probe()
717 for (i--; i >= 0; i--) in bd2802_probe()
718 device_remove_file(&led->client->dev, bd2802_attributes[i]); in bd2802_probe()
724 struct bd2802_led *led = i2c_get_clientdata(client); in bd2802_remove() local
727 gpio_set_value(led->pdata->reset_gpio, 0); in bd2802_remove()
728 bd2802_unregister_led_classdev(led); in bd2802_remove()
729 if (led->adf_on) in bd2802_remove()
730 bd2802_disable_adv_conf(led); in bd2802_remove()
731 for (i = 0; i < ARRAY_SIZE(bd2802_attributes); i++) in bd2802_remove()
732 device_remove_file(&led->client->dev, bd2802_attributes[i]); in bd2802_remove()
734 return 0; in bd2802_remove()
738 static void bd2802_restore_state(struct bd2802_led *led) in bd2802_restore_state() argument
742 for (i = 0; i < LED_NUM; i++) { in bd2802_restore_state()
743 if (led->led[i].r) in bd2802_restore_state()
744 bd2802_turn_on(led, i, RED, led->led[i].r); in bd2802_restore_state()
745 if (led->led[i].g) in bd2802_restore_state()
746 bd2802_turn_on(led, i, GREEN, led->led[i].g); in bd2802_restore_state()
747 if (led->led[i].b) in bd2802_restore_state()
748 bd2802_turn_on(led, i, BLUE, led->led[i].b); in bd2802_restore_state()
755 struct bd2802_led *led = i2c_get_clientdata(client); in bd2802_suspend() local
757 gpio_set_value(led->pdata->reset_gpio, 0); in bd2802_suspend()
759 return 0; in bd2802_suspend()
765 struct bd2802_led *led = i2c_get_clientdata(client); in bd2802_resume() local
767 if (!bd2802_is_all_off(led) || led->adf_on) { in bd2802_resume()
768 bd2802_reset_cancel(led); in bd2802_resume()
769 bd2802_restore_state(led); in bd2802_resume()
772 return 0; in bd2802_resume()
779 { "BD2802", 0 },
797 MODULE_DESCRIPTION("BD2802 LED driver");