5  * SPDX-License-Identifier: Apache-2.0
63 	uint8_t div;  member
141 	*on = ((on_off * dc) / XEC_PWM_DC_PF) - 1;  in xec_compute_on_off()
142 	*off = on_off - *on - 2;  in xec_compute_on_off()
172 	if ((target_freq - freq_a) < (target_freq - freq_b)) {  in xec_compare_div_on_off()
193 	uint8_t div;  in xec_select_best_div_on_off()  local
195 	div = xec_select_div(target_freq, max_freq);  in xec_select_best_div_on_off()
197 	for (div_comp = (int)div - 1; div_comp >= 0; div_comp--) {  in xec_select_best_div_on_off()
198 		div = xec_compare_div_on_off(target_freq, dc, max_freq,  in xec_select_best_div_on_off()
199 					     div, div_comp, on, off);  in xec_select_best_div_on_off()
202 	return div;  in xec_select_best_div_on_off()
213 	if (hc_params->div < NUM_DIV_ELEMS) {  in xec_compare_params()
215 				max_freq_high_on_div[hc_params->div],  in xec_compare_params()
216 				hc_params->on,  in xec_compare_params()
217 				hc_params->off);  in xec_compare_params()
220 	if (lc_params->div < NUM_DIV_ELEMS) {  in xec_compare_params()
222 				max_freq_low_on_div[lc_params->div],  in xec_compare_params()
223 				lc_params->on,  in xec_compare_params()
224 				lc_params->off);  in xec_compare_params()
227 	if (abs((int)target_freq - (int)freq_h) <  in xec_compare_params()
228 	    abs((int)target_freq - (int)freq_l)) {  in xec_compare_params()
235 	LOG_DBG("\tOn %s clock, ON %u OFF %u DIV %u",  in xec_compare_params()
237 		params->on, params->off, params->div);  in xec_compare_params()
246 	const struct pwm_xec_config * const cfg = dev->config;  in xec_compute_and_set_parameters()
247 	struct pwm_regs * const regs = cfg->regs;  in xec_compute_and_set_parameters()
259 	LOG_DBG("Target freq (x%u): %u and DC %u per-cent",  in xec_compute_and_set_parameters()
268 			hc_params.div = 0;  in xec_compute_and_set_parameters()
269 			lc_params.div = UINT8_MAX;  in xec_compute_and_set_parameters()
274 		hc_params.div = xec_select_best_div_on_off(  in xec_compute_and_set_parameters()
279 		LOG_DBG("Best div high: %u (on/off: %u/%u)",  in xec_compute_and_set_parameters()
280 			hc_params.div, hc_params.on, hc_params.off);  in xec_compute_and_set_parameters()
282 		hc_params.div = UINT8_MAX;  in xec_compute_and_set_parameters()
286 		lc_params.div = xec_select_best_div_on_off(  in xec_compute_and_set_parameters()
291 		LOG_DBG("Best div low: %u (on/off: %u/%u)",  in xec_compute_and_set_parameters()
292 			lc_params.div, lc_params.on, lc_params.off);  in xec_compute_and_set_parameters()
294 		lc_params.div = UINT8_MAX;  in xec_compute_and_set_parameters()
297 	regs->CONFIG &= ~MCHP_PWM_CFG_ENABLE;  in xec_compute_and_set_parameters()
299 	cfgval = regs->CONFIG;  in xec_compute_and_set_parameters()
308 	regs->COUNT_ON = params->on;  in xec_compute_and_set_parameters()
309 	regs->COUNT_OFF = params->off;  in xec_compute_and_set_parameters()
311 	cfgval |= MCHP_PWM_CFG_CLK_PRE_DIV(params->div);  in xec_compute_and_set_parameters()
314 	regs->CONFIG = cfgval;  in xec_compute_and_set_parameters()
321 	const struct pwm_xec_config * const cfg = dev->config;  in pwm_xec_set_cycles()
322 	struct pwm_regs * const regs = cfg->regs;  in pwm_xec_set_cycles()
327 		return -EIO;  in pwm_xec_set_cycles()
331 		regs->CONFIG |= MCHP_PWM_CFG_ON_POL_LO;  in pwm_xec_set_cycles()
335 	off = period_cycles - pulse_cycles;  in pwm_xec_set_cycles()
340 		return -EINVAL;  in pwm_xec_set_cycles()
344 		regs->CONFIG &= ~MCHP_PWM_CFG_ENABLE;  in pwm_xec_set_cycles()
346 		regs->COUNT_ON = 0;  in pwm_xec_set_cycles()
347 		regs->COUNT_OFF = 1;  in pwm_xec_set_cycles()
349 		regs->COUNT_ON = 1;  in pwm_xec_set_cycles()
350 		regs->COUNT_OFF = 0;  in pwm_xec_set_cycles()
364 		return -EIO;  in pwm_xec_get_cycles_per_sec()
380 	const struct pwm_xec_config *const devcfg = dev->config;  in pwm_xec_pm_action()
381 	struct pwm_regs * const regs = devcfg->regs;  in pwm_xec_pm_action()
382 	struct pwm_xec_data * const data = dev->data;  in pwm_xec_pm_action()
387 		ret = pinctrl_apply_state(devcfg->pcfg, PINCTRL_STATE_DEFAULT);  in pwm_xec_pm_action()
393 		if ((data->config & MCHP_PWM_CFG_ENABLE) == MCHP_PWM_CFG_ENABLE) {  in pwm_xec_pm_action()
395 			regs->CONFIG |= MCHP_PWM_CFG_ENABLE;  in pwm_xec_pm_action()
397 			data->config &= (~MCHP_PWM_CFG_ENABLE);  in pwm_xec_pm_action()
401 		if ((regs->CONFIG & MCHP_PWM_CFG_ENABLE) == MCHP_PWM_CFG_ENABLE) {  in pwm_xec_pm_action()
403 			data->config = regs->CONFIG;  in pwm_xec_pm_action()
405 			regs->CONFIG &= ~(MCHP_PWM_CFG_ENABLE);  in pwm_xec_pm_action()
408 		ret = pinctrl_apply_state(devcfg->pcfg, PINCTRL_STATE_SLEEP);  in pwm_xec_pm_action()
409 		/* pinctrl-1 does not exist. */  in pwm_xec_pm_action()
410 		if (ret == -ENOENT) {  in pwm_xec_pm_action()
415 		ret = -ENOTSUP;  in pwm_xec_pm_action()
428 	const struct pwm_xec_config * const cfg = dev->config;  in pwm_xec_init()
429 	int ret = pinctrl_apply_state(cfg->pcfg, PINCTRL_STATE_DEFAULT);  in pwm_xec_init()