drivers/pwm/pwm-fsl-ftm.c

17 #include <linux/pwm.h>
46 	/* This value is valid iff a pwm is running */
86 static int fsl_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm)
94 		regmap_set_bits(fpc->regmap, FTM_SC, BIT(pwm->hwpwm + 16));
101 static void fsl_pwm_free(struct pwm_chip *chip, struct pwm_device *pwm)
107 		regmap_clear_bits(fpc->regmap, FTM_SC, BIT(pwm->hwpwm + 16));
200 				       struct pwm_device *pwm)
212 					 struct pwm_device *pwm)
217 	if (~(val | BIT(pwm->hwpwm)) & 0xFF)
224 				struct pwm_device *pwm,
239 	if (!fsl_pwm_is_any_pwm_enabled(fpc, pwm))
245 	 * we allow to change the period only if no other pwm is running.
248 		if (fsl_pwm_is_other_pwm_enabled(fpc, pwm)) {
251 				pwm->hwpwm);
281 	regmap_write(fpc->regmap, FTM_CSC(pwm->hwpwm),
283 	regmap_write(fpc->regmap, FTM_CV(pwm->hwpwm), duty);
287 		reg_polarity = BIT(pwm->hwpwm);
289 	regmap_update_bits(fpc->regmap, FTM_POL, BIT(pwm->hwpwm), reg_polarity);
296 static int fsl_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
300 	struct pwm_state *oldstate = &pwm->state;
317 					BIT(pwm->hwpwm));
325 	ret = fsl_pwm_apply_config(chip, pwm, newstate);
341 		regmap_clear_bits(fpc->regmap, FTM_OUTMASK, BIT(pwm->hwpwm));
471 		struct pwm_device *pwm = &chip->pwms[i];
473 		if (!test_bit(PWMF_REQUESTED, &pwm->flags))
478 		if (!pwm_is_enabled(pwm))
495 		struct pwm_device *pwm = &chip->pwms[i];
497 		if (!test_bit(PWMF_REQUESTED, &pwm->flags))
502 		if (!pwm_is_enabled(pwm))
530 	{ .compatible = "fsl,vf610-ftm-pwm", .data = &vf610_ftm_pwm },
531 	{ .compatible = "fsl,imx8qm-ftm-pwm", .data = &imx8qm_ftm_pwm },
538 		.name = "fsl-ftm-pwm",
548 MODULE_ALIAS("platform:fsl-ftm-pwm");