301 static unsigned int meson_sar_adc_get_fifo_count(struct iio_dev *indio_dev)  in meson_sar_adc_get_fifo_count()  argument
303 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_get_fifo_count()
311 static int meson_sar_adc_calib_val(struct iio_dev *indio_dev, int val)  in meson_sar_adc_calib_val()  argument
313 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_calib_val()
322 static int meson_sar_adc_wait_busy_clear(struct iio_dev *indio_dev)  in meson_sar_adc_wait_busy_clear()  argument
324 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_wait_busy_clear()
343 static int meson_sar_adc_read_raw_sample(struct iio_dev *indio_dev,  in meson_sar_adc_read_raw_sample()  argument
347 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_read_raw_sample()
354 	count = meson_sar_adc_get_fifo_count(indio_dev);  in meson_sar_adc_read_raw_sample()
356 		dev_err(&indio_dev->dev,  in meson_sar_adc_read_raw_sample()
364 		dev_err(&indio_dev->dev,  in meson_sar_adc_read_raw_sample()
372 	*val = meson_sar_adc_calib_val(indio_dev, fifo_val);  in meson_sar_adc_read_raw_sample()
377 static void meson_sar_adc_set_averaging(struct iio_dev *indio_dev,  in meson_sar_adc_set_averaging()  argument
382 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_set_averaging()
395 static void meson_sar_adc_enable_channel(struct iio_dev *indio_dev,  in meson_sar_adc_enable_channel()  argument
398 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_enable_channel()
440 static void meson_sar_adc_set_chan7_mux(struct iio_dev *indio_dev,  in meson_sar_adc_set_chan7_mux()  argument
443 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_set_chan7_mux()
453 static void meson_sar_adc_start_sample_engine(struct iio_dev *indio_dev)  in meson_sar_adc_start_sample_engine()  argument
455 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_start_sample_engine()
472 static void meson_sar_adc_stop_sample_engine(struct iio_dev *indio_dev)  in meson_sar_adc_stop_sample_engine()  argument
474 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_stop_sample_engine()
484 	meson_sar_adc_wait_busy_clear(indio_dev);  in meson_sar_adc_stop_sample_engine()
490 static int meson_sar_adc_lock(struct iio_dev *indio_dev)  in meson_sar_adc_lock()  argument
492 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_lock()
495 	mutex_lock(&indio_dev->mlock);  in meson_sar_adc_lock()
513 			mutex_unlock(&indio_dev->mlock);  in meson_sar_adc_lock()
521 static void meson_sar_adc_unlock(struct iio_dev *indio_dev)  in meson_sar_adc_unlock()  argument
523 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_unlock()
530 	mutex_unlock(&indio_dev->mlock);  in meson_sar_adc_unlock()
533 static void meson_sar_adc_clear_fifo(struct iio_dev *indio_dev)  in meson_sar_adc_clear_fifo()  argument
535 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_clear_fifo()
539 		if (!meson_sar_adc_get_fifo_count(indio_dev))  in meson_sar_adc_clear_fifo()
546 static int meson_sar_adc_get_sample(struct iio_dev *indio_dev,  in meson_sar_adc_get_sample()  argument
552 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_get_sample()
558 	ret = meson_sar_adc_lock(indio_dev);  in meson_sar_adc_get_sample()
563 	meson_sar_adc_clear_fifo(indio_dev);  in meson_sar_adc_get_sample()
565 	meson_sar_adc_set_averaging(indio_dev, chan, avg_mode, avg_samples);  in meson_sar_adc_get_sample()
567 	meson_sar_adc_enable_channel(indio_dev, chan);  in meson_sar_adc_get_sample()
569 	meson_sar_adc_start_sample_engine(indio_dev);  in meson_sar_adc_get_sample()
570 	ret = meson_sar_adc_read_raw_sample(indio_dev, chan, val);  in meson_sar_adc_get_sample()
571 	meson_sar_adc_stop_sample_engine(indio_dev);  in meson_sar_adc_get_sample()
573 	meson_sar_adc_unlock(indio_dev);  in meson_sar_adc_get_sample()
576 		dev_warn(indio_dev->dev.parent,  in meson_sar_adc_get_sample()
585 static int meson_sar_adc_iio_info_read_raw(struct iio_dev *indio_dev,  in meson_sar_adc_iio_info_read_raw()  argument
589 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_iio_info_read_raw()
594 		return meson_sar_adc_get_sample(indio_dev, chan, NO_AVERAGING,  in meson_sar_adc_iio_info_read_raw()
598 		return meson_sar_adc_get_sample(indio_dev, chan,  in meson_sar_adc_iio_info_read_raw()
606 				dev_err(indio_dev->dev.parent,  in meson_sar_adc_iio_info_read_raw()
649 static int meson_sar_adc_clk_init(struct iio_dev *indio_dev,  in meson_sar_adc_clk_init()  argument
652 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_clk_init()
656 	init.name = devm_kasprintf(&indio_dev->dev, GFP_KERNEL, "%s#adc_div",  in meson_sar_adc_clk_init()
657 				   dev_name(indio_dev->dev.parent));  in meson_sar_adc_clk_init()
673 	priv->adc_div_clk = devm_clk_register(&indio_dev->dev,  in meson_sar_adc_clk_init()
678 	init.name = devm_kasprintf(&indio_dev->dev, GFP_KERNEL, "%s#adc_en",  in meson_sar_adc_clk_init()
679 				   dev_name(indio_dev->dev.parent));  in meson_sar_adc_clk_init()
693 	priv->adc_clk = devm_clk_register(&indio_dev->dev, &priv->clk_gate.hw);  in meson_sar_adc_clk_init()
700 static int meson_sar_adc_temp_sensor_init(struct iio_dev *indio_dev)  in meson_sar_adc_temp_sensor_init()  argument
702 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_temp_sensor_init()
708 	temperature_calib = devm_nvmem_cell_get(indio_dev->dev.parent,  in meson_sar_adc_temp_sensor_init()
720 		return dev_err_probe(indio_dev->dev.parent, ret,  in meson_sar_adc_temp_sensor_init()
725 		syscon_regmap_lookup_by_phandle(indio_dev->dev.parent->of_node,  in meson_sar_adc_temp_sensor_init()
728 		dev_err(indio_dev->dev.parent,  in meson_sar_adc_temp_sensor_init()
736 		dev_err(indio_dev->dev.parent,  in meson_sar_adc_temp_sensor_init()
741 		dev_err(indio_dev->dev.parent,  in meson_sar_adc_temp_sensor_init()
765 static int meson_sar_adc_init(struct iio_dev *indio_dev)  in meson_sar_adc_init()  argument
767 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_init()
774 	meson_sar_adc_set_chan7_mux(indio_dev, CHAN7_MUX_CH7_INPUT);  in meson_sar_adc_init()
787 	meson_sar_adc_stop_sample_engine(indio_dev);  in meson_sar_adc_init()
892 		dev_err(indio_dev->dev.parent,  in meson_sar_adc_init()
899 		dev_err(indio_dev->dev.parent,  in meson_sar_adc_init()
907 static void meson_sar_adc_set_bandgap(struct iio_dev *indio_dev, bool on_off)  in meson_sar_adc_set_bandgap()  argument
909 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_set_bandgap()
922 static int meson_sar_adc_hw_enable(struct iio_dev *indio_dev)  in meson_sar_adc_hw_enable()  argument
924 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_hw_enable()
928 	ret = meson_sar_adc_lock(indio_dev);  in meson_sar_adc_hw_enable()
934 		dev_err(indio_dev->dev.parent,  in meson_sar_adc_hw_enable()
941 		dev_err(indio_dev->dev.parent, "failed to enable core clk\n");  in meson_sar_adc_hw_enable()
949 	meson_sar_adc_set_bandgap(indio_dev, true);  in meson_sar_adc_hw_enable()
959 		dev_err(indio_dev->dev.parent, "failed to enable adc clk\n");  in meson_sar_adc_hw_enable()
963 	meson_sar_adc_unlock(indio_dev);  in meson_sar_adc_hw_enable()
970 	meson_sar_adc_set_bandgap(indio_dev, false);  in meson_sar_adc_hw_enable()
975 	meson_sar_adc_unlock(indio_dev);  in meson_sar_adc_hw_enable()
980 static int meson_sar_adc_hw_disable(struct iio_dev *indio_dev)  in meson_sar_adc_hw_disable()  argument
982 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_hw_disable()
985 	ret = meson_sar_adc_lock(indio_dev);  in meson_sar_adc_hw_disable()
994 	meson_sar_adc_set_bandgap(indio_dev, false);  in meson_sar_adc_hw_disable()
1000 	meson_sar_adc_unlock(indio_dev);  in meson_sar_adc_hw_disable()
1007 	struct iio_dev *indio_dev = data;  in meson_sar_adc_irq()  local
1008 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_irq()
1024 static int meson_sar_adc_calib(struct iio_dev *indio_dev)  in meson_sar_adc_calib()  argument
1026 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);  in meson_sar_adc_calib()
1033 	meson_sar_adc_set_chan7_mux(indio_dev, CHAN7_MUX_VDD_DIV4);  in meson_sar_adc_calib()
1035 	ret = meson_sar_adc_get_sample(indio_dev,  in meson_sar_adc_calib()
1036 				       &indio_dev->channels[7],  in meson_sar_adc_calib()
1041 	meson_sar_adc_set_chan7_mux(indio_dev, CHAN7_MUX_VDD_MUL3_DIV4);  in meson_sar_adc_calib()
1043 	ret = meson_sar_adc_get_sample(indio_dev,  in meson_sar_adc_calib()
1044 				       &indio_dev->channels[7],  in meson_sar_adc_calib()
1060 	meson_sar_adc_set_chan7_mux(indio_dev, CHAN7_MUX_CH7_INPUT);  in meson_sar_adc_calib()
1189 	struct iio_dev *indio_dev;  in meson_sar_adc_probe()  local
1193 	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*priv));  in meson_sar_adc_probe()
1194 	if (!indio_dev) {  in meson_sar_adc_probe()
1199 	priv = iio_priv(indio_dev);  in meson_sar_adc_probe()
1210 	indio_dev->name = match_data->name;  in meson_sar_adc_probe()
1211 	indio_dev->modes = INDIO_DIRECT_MODE;  in meson_sar_adc_probe()
1212 	indio_dev->info = &meson_sar_adc_iio_info;  in meson_sar_adc_probe()
1228 			       dev_name(&pdev->dev), indio_dev);  in meson_sar_adc_probe()
1266 		ret = meson_sar_adc_clk_init(indio_dev, base);  in meson_sar_adc_probe()
1280 		ret = meson_sar_adc_temp_sensor_init(indio_dev);  in meson_sar_adc_probe()
1286 		indio_dev->channels = meson_sar_adc_and_temp_iio_channels;  in meson_sar_adc_probe()
1287 		indio_dev->num_channels =  in meson_sar_adc_probe()
1290 		indio_dev->channels = meson_sar_adc_iio_channels;  in meson_sar_adc_probe()
1291 		indio_dev->num_channels =  in meson_sar_adc_probe()
1295 	ret = meson_sar_adc_init(indio_dev);  in meson_sar_adc_probe()
1299 	ret = meson_sar_adc_hw_enable(indio_dev);  in meson_sar_adc_probe()
1303 	ret = meson_sar_adc_calib(indio_dev);  in meson_sar_adc_probe()
1307 	platform_set_drvdata(pdev, indio_dev);  in meson_sar_adc_probe()
1309 	ret = iio_device_register(indio_dev);  in meson_sar_adc_probe()
1316 	meson_sar_adc_hw_disable(indio_dev);  in meson_sar_adc_probe()
1323 	struct iio_dev *indio_dev = platform_get_drvdata(pdev);  in meson_sar_adc_remove()  local
1325 	iio_device_unregister(indio_dev);  in meson_sar_adc_remove()
1327 	return meson_sar_adc_hw_disable(indio_dev);  in meson_sar_adc_remove()
1332 	struct iio_dev *indio_dev = dev_get_drvdata(dev);  in meson_sar_adc_suspend()  local
1334 	return meson_sar_adc_hw_disable(indio_dev);  in meson_sar_adc_suspend()
1339 	struct iio_dev *indio_dev = dev_get_drvdata(dev);  in meson_sar_adc_resume()  local
1341 	return meson_sar_adc_hw_enable(indio_dev);  in meson_sar_adc_resume()