91 static bool pca9685_pwm_test_and_set_inuse(struct pca9685 *pca, int pwm_idx)  in pca9685_pwm_test_and_set_inuse()  argument
95 	mutex_lock(&pca->lock);  in pca9685_pwm_test_and_set_inuse()
101 		if (!bitmap_empty(pca->pwms_inuse, PCA9685_MAXCHAN)) {  in pca9685_pwm_test_and_set_inuse()
110 		if (test_bit(PCA9685_MAXCHAN, pca->pwms_inuse)) {  in pca9685_pwm_test_and_set_inuse()
115 	is_inuse = test_and_set_bit(pwm_idx, pca->pwms_inuse);  in pca9685_pwm_test_and_set_inuse()
117 	mutex_unlock(&pca->lock);  in pca9685_pwm_test_and_set_inuse()
121 static void pca9685_pwm_clear_inuse(struct pca9685 *pca, int pwm_idx)  in pca9685_pwm_clear_inuse()  argument
123 	mutex_lock(&pca->lock);  in pca9685_pwm_clear_inuse()
124 	clear_bit(pwm_idx, pca->pwms_inuse);  in pca9685_pwm_clear_inuse()
125 	mutex_unlock(&pca->lock);  in pca9685_pwm_clear_inuse()
130 	struct pca9685 *pca = gpiochip_get_data(gpio);  in pca9685_pwm_gpio_request()  local
132 	if (pca9685_pwm_test_and_set_inuse(pca, offset))  in pca9685_pwm_gpio_request()
134 	pm_runtime_get_sync(pca->chip.dev);  in pca9685_pwm_gpio_request()
140 	struct pca9685 *pca = gpiochip_get_data(gpio);  in pca9685_pwm_gpio_get()  local
141 	struct pwm_device *pwm = &pca->chip.pwms[offset];  in pca9685_pwm_gpio_get()
144 	regmap_read(pca->regmap, LED_N_ON_H(pwm->hwpwm), &value);  in pca9685_pwm_gpio_get()
152 	struct pca9685 *pca = gpiochip_get_data(gpio);  in pca9685_pwm_gpio_set()  local
153 	struct pwm_device *pwm = &pca->chip.pwms[offset];  in pca9685_pwm_gpio_set()
157 	regmap_write(pca->regmap, LED_N_OFF_L(pwm->hwpwm), 0);  in pca9685_pwm_gpio_set()
158 	regmap_write(pca->regmap, LED_N_OFF_H(pwm->hwpwm), 0);  in pca9685_pwm_gpio_set()
161 	regmap_write(pca->regmap, LED_N_ON_H(pwm->hwpwm), on);  in pca9685_pwm_gpio_set()
166 	struct pca9685 *pca = gpiochip_get_data(gpio);  in pca9685_pwm_gpio_free()  local
169 	pm_runtime_put(pca->chip.dev);  in pca9685_pwm_gpio_free()
170 	pca9685_pwm_clear_inuse(pca, offset);  in pca9685_pwm_gpio_free()
200 static int pca9685_pwm_gpio_probe(struct pca9685 *pca)  in pca9685_pwm_gpio_probe()  argument
202 	struct device *dev = pca->chip.dev;  in pca9685_pwm_gpio_probe()
204 	mutex_init(&pca->lock);  in pca9685_pwm_gpio_probe()
206 	pca->gpio.label = dev_name(dev);  in pca9685_pwm_gpio_probe()
207 	pca->gpio.parent = dev;  in pca9685_pwm_gpio_probe()
208 	pca->gpio.request = pca9685_pwm_gpio_request;  in pca9685_pwm_gpio_probe()
209 	pca->gpio.free = pca9685_pwm_gpio_free;  in pca9685_pwm_gpio_probe()
210 	pca->gpio.get_direction = pca9685_pwm_gpio_get_direction;  in pca9685_pwm_gpio_probe()
211 	pca->gpio.direction_input = pca9685_pwm_gpio_direction_input;  in pca9685_pwm_gpio_probe()
212 	pca->gpio.direction_output = pca9685_pwm_gpio_direction_output;  in pca9685_pwm_gpio_probe()
213 	pca->gpio.get = pca9685_pwm_gpio_get;  in pca9685_pwm_gpio_probe()
214 	pca->gpio.set = pca9685_pwm_gpio_set;  in pca9685_pwm_gpio_probe()
215 	pca->gpio.base = -1;  in pca9685_pwm_gpio_probe()
216 	pca->gpio.ngpio = PCA9685_MAXCHAN;  in pca9685_pwm_gpio_probe()
217 	pca->gpio.can_sleep = true;  in pca9685_pwm_gpio_probe()
219 	return devm_gpiochip_add_data(dev, &pca->gpio, pca);  in pca9685_pwm_gpio_probe()
222 static inline bool pca9685_pwm_test_and_set_inuse(struct pca9685 *pca,  in pca9685_pwm_test_and_set_inuse()  argument
229 pca9685_pwm_clear_inuse(struct pca9685 *pca, int pwm_idx)  in pca9685_pwm_clear_inuse()  argument
233 static inline int pca9685_pwm_gpio_probe(struct pca9685 *pca)  in pca9685_pwm_gpio_probe()  argument
239 static void pca9685_set_sleep_mode(struct pca9685 *pca, bool enable)  in pca9685_set_sleep_mode()  argument
241 	regmap_update_bits(pca->regmap, PCA9685_MODE1,  in pca9685_set_sleep_mode()
252 	struct pca9685 *pca = to_pca(chip);  in pca9685_pwm_config()  local
257 	if (period_ns != pca->period_ns) {  in pca9685_pwm_config()
270 			pca9685_set_sleep_mode(pca, true);  in pca9685_pwm_config()
273 			regmap_write(pca->regmap, PCA9685_PRESCALE, prescale);  in pca9685_pwm_config()
276 			pca9685_set_sleep_mode(pca, false);  in pca9685_pwm_config()
278 			pca->period_ns = period_ns;  in pca9685_pwm_config()
292 		regmap_write(pca->regmap, reg, LED_FULL);  in pca9685_pwm_config()
304 		regmap_write(pca->regmap, reg, 0x0);  in pca9685_pwm_config()
311 		regmap_write(pca->regmap, reg, 0x0);  in pca9685_pwm_config()
319 		regmap_write(pca->regmap, reg, LED_FULL);  in pca9685_pwm_config()
332 	regmap_write(pca->regmap, reg, (int)duty & 0xff);  in pca9685_pwm_config()
339 	regmap_write(pca->regmap, reg, ((int)duty >> 8) & 0xf);  in pca9685_pwm_config()
347 	regmap_write(pca->regmap, reg, 0);  in pca9685_pwm_config()
354 	struct pca9685 *pca = to_pca(chip);  in pca9685_pwm_enable()  local
366 	regmap_write(pca->regmap, reg, 0);  in pca9685_pwm_enable()
373 	regmap_write(pca->regmap, reg, 0);  in pca9685_pwm_enable()
384 	regmap_update_bits(pca->regmap, reg, LED_FULL, 0x0);  in pca9685_pwm_enable()
391 	struct pca9685 *pca = to_pca(chip);  in pca9685_pwm_disable()  local
399 	regmap_write(pca->regmap, reg, LED_FULL);  in pca9685_pwm_disable()
407 	regmap_write(pca->regmap, reg, 0x0);  in pca9685_pwm_disable()
412 	struct pca9685 *pca = to_pca(chip);  in pca9685_pwm_request()  local
414 	if (pca9685_pwm_test_and_set_inuse(pca, pwm->hwpwm))  in pca9685_pwm_request()
423 	struct pca9685 *pca = to_pca(chip);  in pca9685_pwm_free()  local
427 	pca9685_pwm_clear_inuse(pca, pwm->hwpwm);  in pca9685_pwm_free()
449 	struct pca9685 *pca;  in pca9685_pwm_probe()  local
453 	pca = devm_kzalloc(&client->dev, sizeof(*pca), GFP_KERNEL);  in pca9685_pwm_probe()
454 	if (!pca)  in pca9685_pwm_probe()
457 	pca->regmap = devm_regmap_init_i2c(client, &pca9685_regmap_i2c_config);  in pca9685_pwm_probe()
458 	if (IS_ERR(pca->regmap)) {  in pca9685_pwm_probe()
459 		ret = PTR_ERR(pca->regmap);  in pca9685_pwm_probe()
464 	pca->period_ns = PCA9685_DEFAULT_PERIOD;  in pca9685_pwm_probe()
466 	i2c_set_clientdata(client, pca);  in pca9685_pwm_probe()
468 	regmap_read(pca->regmap, PCA9685_MODE2, &reg);  in pca9685_pwm_probe()
480 	regmap_write(pca->regmap, PCA9685_MODE2, reg);  in pca9685_pwm_probe()
483 	regmap_read(pca->regmap, PCA9685_MODE1, &reg);  in pca9685_pwm_probe()
485 	regmap_write(pca->regmap, PCA9685_MODE1, reg);  in pca9685_pwm_probe()
488 	regmap_write(pca->regmap, PCA9685_ALL_LED_OFF_L, 0);  in pca9685_pwm_probe()
489 	regmap_write(pca->regmap, PCA9685_ALL_LED_OFF_H, 0);  in pca9685_pwm_probe()
491 	pca->chip.ops = &pca9685_pwm_ops;  in pca9685_pwm_probe()
493 	pca->chip.npwm = PCA9685_MAXCHAN + 1;  in pca9685_pwm_probe()
495 	pca->chip.dev = &client->dev;  in pca9685_pwm_probe()
496 	pca->chip.base = -1;  in pca9685_pwm_probe()
498 	ret = pwmchip_add(&pca->chip);  in pca9685_pwm_probe()
502 	ret = pca9685_pwm_gpio_probe(pca);  in pca9685_pwm_probe()
504 		pwmchip_remove(&pca->chip);  in pca9685_pwm_probe()
521 	struct pca9685 *pca = i2c_get_clientdata(client);  in pca9685_pwm_remove()  local
524 	ret = pwmchip_remove(&pca->chip);  in pca9685_pwm_remove()
534 	struct pca9685 *pca = i2c_get_clientdata(client);  in pca9685_pwm_runtime_suspend()  local
536 	pca9685_set_sleep_mode(pca, true);  in pca9685_pwm_runtime_suspend()
543 	struct pca9685 *pca = i2c_get_clientdata(client);  in pca9685_pwm_runtime_resume()  local
545 	pca9685_set_sleep_mode(pca, false);  in pca9685_pwm_runtime_resume()