6  * - The TPM counter and period counter are shared between
92 	struct imx_tpm_pwm_chip *tpm = to_imx_tpm_pwm_chip(chip);  in pwm_imx_tpm_round_state()  local
96 	rate = clk_get_rate(tpm->clk);  in pwm_imx_tpm_round_state()
139 	struct imx_tpm_pwm_chip *tpm = to_imx_tpm_pwm_chip(chip);  in pwm_imx_tpm_get_state()  local
144 	state->period = tpm->real_period;  in pwm_imx_tpm_get_state()
147 	rate = clk_get_rate(tpm->clk);  in pwm_imx_tpm_get_state()
148 	val = readl(tpm->base + PWM_IMX_TPM_SC);  in pwm_imx_tpm_get_state()
150 	tmp = readl(tpm->base + PWM_IMX_TPM_CnV(pwm->hwpwm));  in pwm_imx_tpm_get_state()
155 	val = readl(tpm->base + PWM_IMX_TPM_CnSC(pwm->hwpwm));  in pwm_imx_tpm_get_state()
177 	struct imx_tpm_pwm_chip *tpm = to_imx_tpm_pwm_chip(chip);  in pwm_imx_tpm_apply_hw()  local
184 	if (state->period != tpm->real_period) {  in pwm_imx_tpm_apply_hw()
186 		 * TPM counter is shared by multiple channels, so  in pwm_imx_tpm_apply_hw()
191 		if (tpm->user_count > 1)  in pwm_imx_tpm_apply_hw()
194 		val = readl(tpm->base + PWM_IMX_TPM_SC);  in pwm_imx_tpm_apply_hw()
200 		/* set TPM counter prescale */  in pwm_imx_tpm_apply_hw()
203 		writel(val, tpm->base + PWM_IMX_TPM_SC);  in pwm_imx_tpm_apply_hw()
213 		writel(p->mod, tpm->base + PWM_IMX_TPM_MOD);  in pwm_imx_tpm_apply_hw()
214 		tpm->real_period = state->period;  in pwm_imx_tpm_apply_hw()
233 		writel(p->val, tpm->base + PWM_IMX_TPM_CnV(pwm->hwpwm));  in pwm_imx_tpm_apply_hw()
239 		timeout = jiffies + msecs_to_jiffies(tpm->real_period /  in pwm_imx_tpm_apply_hw()
241 		while (readl(tpm->base + PWM_IMX_TPM_MOD) != p->mod  in pwm_imx_tpm_apply_hw()
242 		       || readl(tpm->base + PWM_IMX_TPM_CnV(pwm->hwpwm))  in pwm_imx_tpm_apply_hw()
256 	val = readl(tpm->base + PWM_IMX_TPM_CnSC(pwm->hwpwm));  in pwm_imx_tpm_apply_hw()
272 	writel(val, tpm->base + PWM_IMX_TPM_CnSC(pwm->hwpwm));  in pwm_imx_tpm_apply_hw()
276 		val = readl(tpm->base + PWM_IMX_TPM_SC);  in pwm_imx_tpm_apply_hw()
278 			if (++tpm->enable_count == 1)  in pwm_imx_tpm_apply_hw()
281 			if (--tpm->enable_count == 0)  in pwm_imx_tpm_apply_hw()
284 		writel(val, tpm->base + PWM_IMX_TPM_SC);  in pwm_imx_tpm_apply_hw()
294 	struct imx_tpm_pwm_chip *tpm = to_imx_tpm_pwm_chip(chip);  in pwm_imx_tpm_apply()  local
303 	mutex_lock(&tpm->lock);  in pwm_imx_tpm_apply()
305 	mutex_unlock(&tpm->lock);  in pwm_imx_tpm_apply()
312 	struct imx_tpm_pwm_chip *tpm = to_imx_tpm_pwm_chip(chip);  in pwm_imx_tpm_request()  local
314 	mutex_lock(&tpm->lock);  in pwm_imx_tpm_request()
315 	tpm->user_count++;  in pwm_imx_tpm_request()
316 	mutex_unlock(&tpm->lock);  in pwm_imx_tpm_request()
323 	struct imx_tpm_pwm_chip *tpm = to_imx_tpm_pwm_chip(chip);  in pwm_imx_tpm_free()  local
325 	mutex_lock(&tpm->lock);  in pwm_imx_tpm_free()
326 	tpm->user_count--;  in pwm_imx_tpm_free()
327 	mutex_unlock(&tpm->lock);  in pwm_imx_tpm_free()
339 	struct imx_tpm_pwm_chip *tpm;  in pwm_imx_tpm_probe()  local
343 	tpm = devm_kzalloc(&pdev->dev, sizeof(*tpm), GFP_KERNEL);  in pwm_imx_tpm_probe()
344 	if (!tpm)  in pwm_imx_tpm_probe()
347 	platform_set_drvdata(pdev, tpm);  in pwm_imx_tpm_probe()
349 	tpm->base = devm_platform_ioremap_resource(pdev, 0);  in pwm_imx_tpm_probe()
350 	if (IS_ERR(tpm->base))  in pwm_imx_tpm_probe()
351 		return PTR_ERR(tpm->base);  in pwm_imx_tpm_probe()
353 	tpm->clk = devm_clk_get_enabled(&pdev->dev, NULL);  in pwm_imx_tpm_probe()
354 	if (IS_ERR(tpm->clk))  in pwm_imx_tpm_probe()
355 		return dev_err_probe(&pdev->dev, PTR_ERR(tpm->clk),  in pwm_imx_tpm_probe()
358 	tpm->chip.dev = &pdev->dev;  in pwm_imx_tpm_probe()
359 	tpm->chip.ops = &imx_tpm_pwm_ops;  in pwm_imx_tpm_probe()
362 	val = readl(tpm->base + PWM_IMX_TPM_PARAM);  in pwm_imx_tpm_probe()
363 	tpm->chip.npwm = FIELD_GET(PWM_IMX_TPM_PARAM_CHAN, val);  in pwm_imx_tpm_probe()
365 	mutex_init(&tpm->lock);  in pwm_imx_tpm_probe()
367 	ret = devm_pwmchip_add(&pdev->dev, &tpm->chip);  in pwm_imx_tpm_probe()
376 	struct imx_tpm_pwm_chip *tpm = dev_get_drvdata(dev);  in pwm_imx_tpm_suspend()  local
378 	if (tpm->enable_count > 0)  in pwm_imx_tpm_suspend()
386 	tpm->real_period = 0;  in pwm_imx_tpm_suspend()
388 	clk_disable_unprepare(tpm->clk);  in pwm_imx_tpm_suspend()
395 	struct imx_tpm_pwm_chip *tpm = dev_get_drvdata(dev);  in pwm_imx_tpm_resume()  local
398 	ret = clk_prepare_enable(tpm->clk);  in pwm_imx_tpm_resume()
416 		.name = "imx7ulp-tpm-pwm",
425 MODULE_DESCRIPTION("i.MX TPM PWM Driver");