93 static unsigned int rzg2l_adc_readl(struct rzg2l_adc *adc, u32 reg)  in rzg2l_adc_readl()  argument
95 	return readl(adc->base + reg);  in rzg2l_adc_readl()
98 static void rzg2l_adc_writel(struct rzg2l_adc *adc, unsigned int reg, u32 val)  in rzg2l_adc_writel()  argument
100 	writel(val, adc->base + reg);  in rzg2l_adc_writel()
103 static void rzg2l_adc_pwr(struct rzg2l_adc *adc, bool on)  in rzg2l_adc_pwr()  argument
107 	reg = rzg2l_adc_readl(adc, RZG2L_ADM(0));  in rzg2l_adc_pwr()
112 	rzg2l_adc_writel(adc, RZG2L_ADM(0), reg);  in rzg2l_adc_pwr()
116 static void rzg2l_adc_start_stop(struct rzg2l_adc *adc, bool start)  in rzg2l_adc_start_stop()  argument
121 	reg = rzg2l_adc_readl(adc, RZG2L_ADM(0));  in rzg2l_adc_start_stop()
126 	rzg2l_adc_writel(adc, RZG2L_ADM(0), reg);  in rzg2l_adc_start_stop()
133 		reg = rzg2l_adc_readl(adc, RZG2L_ADM(0));  in rzg2l_adc_start_stop()
142 static void rzg2l_set_trigger(struct rzg2l_adc *adc)  in rzg2l_set_trigger()  argument
153 	reg = rzg2l_adc_readl(adc, RZG2L_ADM(1));  in rzg2l_set_trigger()
158 	rzg2l_adc_writel(adc, RZG2L_ADM(1), reg);  in rzg2l_set_trigger()
161 static int rzg2l_adc_conversion_setup(struct rzg2l_adc *adc, u8 ch)  in rzg2l_adc_conversion_setup()  argument
165 	if (rzg2l_adc_readl(adc, RZG2L_ADM(0)) & RZG2L_ADM0_ADBSY)  in rzg2l_adc_conversion_setup()
168 	rzg2l_set_trigger(adc);  in rzg2l_adc_conversion_setup()
171 	reg = rzg2l_adc_readl(adc, RZG2L_ADM(2));  in rzg2l_adc_conversion_setup()
174 	rzg2l_adc_writel(adc, RZG2L_ADM(2), reg);  in rzg2l_adc_conversion_setup()
182 	reg = rzg2l_adc_readl(adc, RZG2L_ADINT);  in rzg2l_adc_conversion_setup()
186 	rzg2l_adc_writel(adc, RZG2L_ADINT, reg);  in rzg2l_adc_conversion_setup()
201 static int rzg2l_adc_conversion(struct iio_dev *indio_dev, struct rzg2l_adc *adc, u8 ch)  in rzg2l_adc_conversion()  argument
209 	ret = rzg2l_adc_conversion_setup(adc, ch);  in rzg2l_adc_conversion()
215 	reinit_completion(&adc->completion);  in rzg2l_adc_conversion()
217 	rzg2l_adc_start_stop(adc, true);  in rzg2l_adc_conversion()
219 	if (!wait_for_completion_timeout(&adc->completion, RZG2L_ADC_TIMEOUT)) {  in rzg2l_adc_conversion()
220 		rzg2l_adc_writel(adc, RZG2L_ADINT,  in rzg2l_adc_conversion()
221 				 rzg2l_adc_readl(adc, RZG2L_ADINT) & ~RZG2L_ADINT_INTEN_MASK);  in rzg2l_adc_conversion()
222 		rzg2l_adc_start_stop(adc, false);  in rzg2l_adc_conversion()
234 	struct rzg2l_adc *adc = iio_priv(indio_dev);  in rzg2l_adc_read_raw()  local
243 		mutex_lock(&adc->lock);  in rzg2l_adc_read_raw()
245 		ret = rzg2l_adc_conversion(indio_dev, adc, ch);  in rzg2l_adc_read_raw()
247 			mutex_unlock(&adc->lock);  in rzg2l_adc_read_raw()
250 		*val = adc->last_val[ch];  in rzg2l_adc_read_raw()
251 		mutex_unlock(&adc->lock);  in rzg2l_adc_read_raw()
274 	struct rzg2l_adc *adc = dev_id;  in rzg2l_adc_isr()  local
279 	reg = rzg2l_adc_readl(adc, RZG2L_ADSTS);  in rzg2l_adc_isr()
283 		rzg2l_adc_writel(adc, RZG2L_ADSTS, reg);  in rzg2l_adc_isr()
292 		adc->last_val[ch] = rzg2l_adc_readl(adc, RZG2L_ADCR(ch)) & RZG2L_ADCR_AD_MASK;  in rzg2l_adc_isr()
295 	rzg2l_adc_writel(adc, RZG2L_ADSTS, reg);  in rzg2l_adc_isr()
297 	complete(&adc->completion);  in rzg2l_adc_isr()
302 static int rzg2l_adc_parse_properties(struct platform_device *pdev, struct rzg2l_adc *adc)  in rzg2l_adc_parse_properties()  argument
355 	adc->data = data;  in rzg2l_adc_parse_properties()
360 static int rzg2l_adc_hw_init(struct rzg2l_adc *adc)  in rzg2l_adc_hw_init()  argument
366 	ret = clk_prepare_enable(adc->pclk);  in rzg2l_adc_hw_init()
371 	reg = rzg2l_adc_readl(adc, RZG2L_ADM(0));  in rzg2l_adc_hw_init()
373 	rzg2l_adc_writel(adc, RZG2L_ADM(0), reg);  in rzg2l_adc_hw_init()
375 	while (!(rzg2l_adc_readl(adc, RZG2L_ADM(0)) & RZG2L_ADM0_SRESB)) {  in rzg2l_adc_hw_init()
385 	reg = rzg2l_adc_readl(adc, RZG2L_ADIVC);  in rzg2l_adc_hw_init()
388 	rzg2l_adc_writel(adc, RZG2L_ADIVC, reg);  in rzg2l_adc_hw_init()
396 	reg = rzg2l_adc_readl(adc, RZG2L_ADM(3));  in rzg2l_adc_hw_init()
401 	rzg2l_adc_writel(adc, RZG2L_ADM(3), reg);  in rzg2l_adc_hw_init()
404 	clk_disable_unprepare(adc->pclk);  in rzg2l_adc_hw_init()
432 	struct rzg2l_adc *adc;  in rzg2l_adc_probe()  local
436 	indio_dev = devm_iio_device_alloc(dev, sizeof(*adc));  in rzg2l_adc_probe()
440 	adc = iio_priv(indio_dev);  in rzg2l_adc_probe()
442 	ret = rzg2l_adc_parse_properties(pdev, adc);  in rzg2l_adc_probe()
446 	mutex_init(&adc->lock);  in rzg2l_adc_probe()
448 	adc->base = devm_platform_ioremap_resource(pdev, 0);  in rzg2l_adc_probe()
449 	if (IS_ERR(adc->base))  in rzg2l_adc_probe()
450 		return PTR_ERR(adc->base);  in rzg2l_adc_probe()
452 	adc->pclk = devm_clk_get(dev, "pclk");  in rzg2l_adc_probe()
453 	if (IS_ERR(adc->pclk)) {  in rzg2l_adc_probe()
455 		return PTR_ERR(adc->pclk);  in rzg2l_adc_probe()
458 	adc->adclk = devm_clk_get(dev, "adclk");  in rzg2l_adc_probe()
459 	if (IS_ERR(adc->adclk)) {  in rzg2l_adc_probe()
461 		return PTR_ERR(adc->adclk);  in rzg2l_adc_probe()
464 	adc->adrstn = devm_reset_control_get_exclusive(dev, "adrst-n");  in rzg2l_adc_probe()
465 	if (IS_ERR(adc->adrstn)) {  in rzg2l_adc_probe()
467 		return PTR_ERR(adc->adrstn);  in rzg2l_adc_probe()
470 	adc->presetn = devm_reset_control_get_exclusive(dev, "presetn");  in rzg2l_adc_probe()
471 	if (IS_ERR(adc->presetn)) {  in rzg2l_adc_probe()
473 		return PTR_ERR(adc->presetn);  in rzg2l_adc_probe()
476 	ret = reset_control_deassert(adc->adrstn);  in rzg2l_adc_probe()
483 				       rzg2l_adc_reset_assert, adc->adrstn);  in rzg2l_adc_probe()
490 	ret = reset_control_deassert(adc->presetn);  in rzg2l_adc_probe()
497 				       rzg2l_adc_reset_assert, adc->presetn);  in rzg2l_adc_probe()
504 	ret = rzg2l_adc_hw_init(adc);  in rzg2l_adc_probe()
515 			       0, dev_name(dev), adc);  in rzg2l_adc_probe()
519 	init_completion(&adc->completion);  in rzg2l_adc_probe()
526 	indio_dev->channels = adc->data->channels;  in rzg2l_adc_probe()
527 	indio_dev->num_channels = adc->data->num_channels;  in rzg2l_adc_probe()
553 	struct rzg2l_adc *adc = iio_priv(indio_dev);  in rzg2l_adc_pm_runtime_suspend()  local
555 	rzg2l_adc_pwr(adc, false);  in rzg2l_adc_pm_runtime_suspend()
556 	clk_disable_unprepare(adc->adclk);  in rzg2l_adc_pm_runtime_suspend()
557 	clk_disable_unprepare(adc->pclk);  in rzg2l_adc_pm_runtime_suspend()
565 	struct rzg2l_adc *adc = iio_priv(indio_dev);  in rzg2l_adc_pm_runtime_resume()  local
568 	ret = clk_prepare_enable(adc->pclk);  in rzg2l_adc_pm_runtime_resume()
572 	ret = clk_prepare_enable(adc->adclk);  in rzg2l_adc_pm_runtime_resume()
574 		clk_disable_unprepare(adc->pclk);  in rzg2l_adc_pm_runtime_resume()
578 	rzg2l_adc_pwr(adc, true);  in rzg2l_adc_pm_runtime_resume()