61 	struct pwm_sifive_ddata *ddata = pwm_sifive_chip_to_ddata(chip);  in pwm_sifive_request()  local
63 	mutex_lock(&ddata->lock);  in pwm_sifive_request()
64 	ddata->user_count++;  in pwm_sifive_request()
65 	mutex_unlock(&ddata->lock);  in pwm_sifive_request()
72 	struct pwm_sifive_ddata *ddata = pwm_sifive_chip_to_ddata(chip);  in pwm_sifive_free()  local
74 	mutex_lock(&ddata->lock);  in pwm_sifive_free()
75 	ddata->user_count--;  in pwm_sifive_free()
76 	mutex_unlock(&ddata->lock);  in pwm_sifive_free()
79 static void pwm_sifive_update_clock(struct pwm_sifive_ddata *ddata,  in pwm_sifive_update_clock()  argument
93 	scale_pow = div64_ul(ddata->approx_period * (u64)rate, NSEC_PER_SEC);  in pwm_sifive_update_clock()
98 	writel(val, ddata->regs + PWM_SIFIVE_PWMCFG);  in pwm_sifive_update_clock()
102 	ddata->real_period = div64_ul(num, rate);  in pwm_sifive_update_clock()
103 	dev_dbg(ddata->chip.dev,  in pwm_sifive_update_clock()
104 		"New real_period = %u ns\n", ddata->real_period);  in pwm_sifive_update_clock()
110 	struct pwm_sifive_ddata *ddata = pwm_sifive_chip_to_ddata(chip);  in pwm_sifive_get_state()  local
113 	duty = readl(ddata->regs + PWM_SIFIVE_PWMCMP(pwm->hwpwm));  in pwm_sifive_get_state()
117 	val = readl(ddata->regs + PWM_SIFIVE_PWMCFG);  in pwm_sifive_get_state()
121 	state->period = ddata->real_period;  in pwm_sifive_get_state()
123 		(u64)duty * ddata->real_period >> PWM_SIFIVE_CMPWIDTH;  in pwm_sifive_get_state()
129 	struct pwm_sifive_ddata *ddata = pwm_sifive_chip_to_ddata(chip);  in pwm_sifive_enable()  local
133 		ret = clk_enable(ddata->clk);  in pwm_sifive_enable()
135 			dev_err(ddata->chip.dev, "Enable clk failed\n");  in pwm_sifive_enable()
141 		clk_disable(ddata->clk);  in pwm_sifive_enable()
149 	struct pwm_sifive_ddata *ddata = pwm_sifive_chip_to_ddata(chip);  in pwm_sifive_apply()  local
160 	ret = clk_enable(ddata->clk);  in pwm_sifive_apply()
162 		dev_err(ddata->chip.dev, "Enable clk failed\n");  in pwm_sifive_apply()
166 	mutex_lock(&ddata->lock);  in pwm_sifive_apply()
185 	if (state->period != ddata->approx_period) {  in pwm_sifive_apply()
186 		if (ddata->user_count != 1) {  in pwm_sifive_apply()
190 		ddata->approx_period = state->period;  in pwm_sifive_apply()
191 		pwm_sifive_update_clock(ddata, clk_get_rate(ddata->clk));  in pwm_sifive_apply()
194 	writel(frac, ddata->regs + PWM_SIFIVE_PWMCMP(pwm->hwpwm));  in pwm_sifive_apply()
200 	clk_disable(ddata->clk);  in pwm_sifive_apply()
201 	mutex_unlock(&ddata->lock);  in pwm_sifive_apply()
217 	struct pwm_sifive_ddata *ddata =  in pwm_sifive_clock_notifier()  local
221 		pwm_sifive_update_clock(ddata, ndata->new_rate);  in pwm_sifive_clock_notifier()
229 	struct pwm_sifive_ddata *ddata;  in pwm_sifive_probe()  local
236 	ddata = devm_kzalloc(dev, sizeof(*ddata), GFP_KERNEL);  in pwm_sifive_probe()
237 	if (!ddata)  in pwm_sifive_probe()
240 	mutex_init(&ddata->lock);  in pwm_sifive_probe()
241 	chip = &ddata->chip;  in pwm_sifive_probe()
250 	ddata->regs = devm_ioremap_resource(dev, res);  in pwm_sifive_probe()
251 	if (IS_ERR(ddata->regs))  in pwm_sifive_probe()
252 		return PTR_ERR(ddata->regs);  in pwm_sifive_probe()
254 	ddata->clk = devm_clk_get(dev, NULL);  in pwm_sifive_probe()
255 	if (IS_ERR(ddata->clk))  in pwm_sifive_probe()
256 		return dev_err_probe(dev, PTR_ERR(ddata->clk),  in pwm_sifive_probe()
259 	ret = clk_prepare_enable(ddata->clk);  in pwm_sifive_probe()
265 	val = readl(ddata->regs + PWM_SIFIVE_PWMCFG);  in pwm_sifive_probe()
270 			val = readl(ddata->regs + PWM_SIFIVE_PWMCMP(i));  in pwm_sifive_probe()
280 			ret = clk_enable(ddata->clk);  in pwm_sifive_probe()
288 		clk_disable(ddata->clk);  in pwm_sifive_probe()
293 	ddata->notifier.notifier_call = pwm_sifive_clock_notifier;  in pwm_sifive_probe()
294 	ret = clk_notifier_register(ddata->clk, &ddata->notifier);  in pwm_sifive_probe()
306 	platform_set_drvdata(pdev, ddata);  in pwm_sifive_probe()
312 	clk_notifier_unregister(ddata->clk, &ddata->notifier);  in pwm_sifive_probe()
315 		clk_disable(ddata->clk);  in pwm_sifive_probe()
318 	clk_unprepare(ddata->clk);  in pwm_sifive_probe()
325 	struct pwm_sifive_ddata *ddata = platform_get_drvdata(dev);  in pwm_sifive_remove()  local
329 	pwmchip_remove(&ddata->chip);  in pwm_sifive_remove()
330 	clk_notifier_unregister(ddata->clk, &ddata->notifier);  in pwm_sifive_remove()
332 	for (ch = 0; ch < ddata->chip.npwm; ch++) {  in pwm_sifive_remove()
333 		pwm = &ddata->chip.pwms[ch];  in pwm_sifive_remove()
335 			clk_disable(ddata->clk);  in pwm_sifive_remove()
338 	clk_unprepare(ddata->clk);  in pwm_sifive_remove()