8  * This driver is a complete rewrite of the former pwm-twl6030.c authorded by:
31 #include <linux/pwm.h>
36  * This driver handles the PWM driven LED terminals of TWL4030 and TWL6030.
74 static int twl4030_pwmled_config(struct pwm_chip *chip, struct pwm_device *pwm,  in twl4030_pwmled_config()  argument
90 	 * When on cycle == off cycle the PWM will be always on  in twl4030_pwmled_config()
97 	base = pwm->hwpwm * 2 + TWL4030_PWMA_REG;  in twl4030_pwmled_config()
103 		dev_err(chip->dev, "%s: Failed to configure PWM\n", pwm->label);  in twl4030_pwmled_config()
108 static int twl4030_pwmled_enable(struct pwm_chip *chip, struct pwm_device *pwm)  in twl4030_pwmled_enable()  argument
117 		dev_err(chip->dev, "%s: Failed to read LEDEN\n", pwm->label);  in twl4030_pwmled_enable()
121 	val |= TWL4030_LED_TOGGLE(pwm->hwpwm, TWL4030_LED_PINS);  in twl4030_pwmled_enable()
125 		dev_err(chip->dev, "%s: Failed to enable PWM\n", pwm->label);  in twl4030_pwmled_enable()
133 				   struct pwm_device *pwm)  in twl4030_pwmled_disable()  argument
142 		dev_err(chip->dev, "%s: Failed to read LEDEN\n", pwm->label);  in twl4030_pwmled_disable()
146 	val &= ~TWL4030_LED_TOGGLE(pwm->hwpwm, TWL4030_LED_PINS);  in twl4030_pwmled_disable()
150 		dev_err(chip->dev, "%s: Failed to disable PWM\n", pwm->label);  in twl4030_pwmled_disable()
156 static int twl4030_pwmled_apply(struct pwm_chip *chip, struct pwm_device *pwm,  in twl4030_pwmled_apply()  argument
165 		if (pwm->state.enabled)  in twl4030_pwmled_apply()
166 			twl4030_pwmled_disable(chip, pwm);  in twl4030_pwmled_apply()
173 	 * pwm->state.period && state->duty_cycle == pwm->state.duty_cycle  in twl4030_pwmled_apply()
176 	 * pwm->state might not be configured in hardware.  in twl4030_pwmled_apply()
178 	ret = twl4030_pwmled_config(pwm->chip, pwm,  in twl4030_pwmled_apply()
183 	if (!pwm->state.enabled)  in twl4030_pwmled_apply()
184 		ret = twl4030_pwmled_enable(chip, pwm);  in twl4030_pwmled_apply()
195 static int twl6030_pwmled_config(struct pwm_chip *chip, struct pwm_device *pwm,  in twl6030_pwmled_config()  argument
207 		dev_err(chip->dev, "%s: Failed to configure PWM\n", pwm->label);  in twl6030_pwmled_config()
212 static int twl6030_pwmled_enable(struct pwm_chip *chip, struct pwm_device *pwm)  in twl6030_pwmled_enable()  argument
222 			pwm->label);  in twl6030_pwmled_enable()
231 		dev_err(chip->dev, "%s: Failed to enable PWM\n", pwm->label);  in twl6030_pwmled_enable()
239 				   struct pwm_device *pwm)  in twl6030_pwmled_disable()  argument
249 			pwm->label);  in twl6030_pwmled_disable()
258 		dev_err(chip->dev, "%s: Failed to disable PWM\n", pwm->label);  in twl6030_pwmled_disable()
264 static int twl6030_pwmled_apply(struct pwm_chip *chip, struct pwm_device *pwm,  in twl6030_pwmled_apply()  argument
269 	if (state->polarity != pwm->state.polarity)  in twl6030_pwmled_apply()
273 		if (pwm->state.enabled)  in twl6030_pwmled_apply()
274 			twl6030_pwmled_disable(chip, pwm);  in twl6030_pwmled_apply()
279 	err = twl6030_pwmled_config(pwm->chip, pwm,  in twl6030_pwmled_apply()
284 	if (!pwm->state.enabled)  in twl6030_pwmled_apply()
285 		err = twl6030_pwmled_enable(chip, pwm);  in twl6030_pwmled_apply()
290 static int twl6030_pwmled_request(struct pwm_chip *chip, struct pwm_device *pwm)  in twl6030_pwmled_request()  argument
300 			pwm->label);  in twl6030_pwmled_request()
309 		dev_err(chip->dev, "%s: Failed to request PWM\n", pwm->label);  in twl6030_pwmled_request()
316 static void twl6030_pwmled_free(struct pwm_chip *chip, struct pwm_device *pwm)  in twl6030_pwmled_free()  argument
326 			pwm->label);  in twl6030_pwmled_free()
335 		dev_err(chip->dev, "%s: Failed to free PWM\n", pwm->label);  in twl6030_pwmled_free()
390 MODULE_DESCRIPTION("PWM driver for TWL4030 and TWL6030 LED outputs");