70 static inline void cc10001_adc_write_reg(struct cc10001_adc_device *adc_dev,  in cc10001_adc_write_reg()  argument
73 	writel(val, adc_dev->reg_base + reg);  in cc10001_adc_write_reg()
76 static inline u32 cc10001_adc_read_reg(struct cc10001_adc_device *adc_dev,  in cc10001_adc_read_reg()  argument
79 	return readl(adc_dev->reg_base + reg);  in cc10001_adc_read_reg()
82 static void cc10001_adc_power_up(struct cc10001_adc_device *adc_dev)  in cc10001_adc_power_up()  argument
84 	cc10001_adc_write_reg(adc_dev, CC10001_ADC_POWER_DOWN, 0);  in cc10001_adc_power_up()
85 	ndelay(adc_dev->start_delay_ns);  in cc10001_adc_power_up()
88 static void cc10001_adc_power_down(struct cc10001_adc_device *adc_dev)  in cc10001_adc_power_down()  argument
90 	cc10001_adc_write_reg(adc_dev, CC10001_ADC_POWER_DOWN,  in cc10001_adc_power_down()
94 static void cc10001_adc_start(struct cc10001_adc_device *adc_dev,  in cc10001_adc_start()  argument
101 	cc10001_adc_write_reg(adc_dev, CC10001_ADC_CONFIG, val);  in cc10001_adc_start()
104 	val = cc10001_adc_read_reg(adc_dev, CC10001_ADC_CONFIG);  in cc10001_adc_start()
106 	cc10001_adc_write_reg(adc_dev, CC10001_ADC_CONFIG, val);  in cc10001_adc_start()
113 	struct cc10001_adc_device *adc_dev = iio_priv(indio_dev);  in cc10001_adc_poll_done()  local
116 	while (!(cc10001_adc_read_reg(adc_dev, CC10001_ADC_EOC) &  in cc10001_adc_poll_done()
125 	while ((cc10001_adc_read_reg(adc_dev, CC10001_ADC_CHSEL_SAMPLED) &  in cc10001_adc_poll_done()
134 	return cc10001_adc_read_reg(adc_dev, CC10001_ADC_DDATA_OUT) &  in cc10001_adc_poll_done()
140 	struct cc10001_adc_device *adc_dev;  in cc10001_adc_trigger_h()  local
151 	adc_dev = iio_priv(indio_dev);  in cc10001_adc_trigger_h()
152 	data = adc_dev->buf;  in cc10001_adc_trigger_h()
154 	mutex_lock(&adc_dev->lock);  in cc10001_adc_trigger_h()
156 	cc10001_adc_power_up(adc_dev);  in cc10001_adc_trigger_h()
159 	delay_ns = adc_dev->eoc_delay_ns / CC10001_MAX_POLL_COUNT;  in cc10001_adc_trigger_h()
167 		cc10001_adc_start(adc_dev, channel);  in cc10001_adc_trigger_h()
180 	cc10001_adc_power_down(adc_dev);  in cc10001_adc_trigger_h()
182 	mutex_unlock(&adc_dev->lock);  in cc10001_adc_trigger_h()
195 	struct cc10001_adc_device *adc_dev = iio_priv(indio_dev);  in cc10001_adc_read_raw_voltage()  local
199 	cc10001_adc_power_up(adc_dev);  in cc10001_adc_read_raw_voltage()
202 	delay_ns = adc_dev->eoc_delay_ns / CC10001_MAX_POLL_COUNT;  in cc10001_adc_read_raw_voltage()
204 	cc10001_adc_start(adc_dev, chan->channel);  in cc10001_adc_read_raw_voltage()
208 	cc10001_adc_power_down(adc_dev);  in cc10001_adc_read_raw_voltage()
217 	struct cc10001_adc_device *adc_dev = iio_priv(indio_dev);  in cc10001_adc_read_raw()  local
224 		mutex_lock(&adc_dev->lock);  in cc10001_adc_read_raw()
226 		mutex_unlock(&adc_dev->lock);  in cc10001_adc_read_raw()
233 		ret = regulator_get_voltage(adc_dev->reg);  in cc10001_adc_read_raw()
249 	struct cc10001_adc_device *adc_dev = iio_priv(indio_dev);  in cc10001_update_scan_mode()  local
251 	kfree(adc_dev->buf);  in cc10001_update_scan_mode()
252 	adc_dev->buf = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);  in cc10001_update_scan_mode()
253 	if (!adc_dev->buf)  in cc10001_update_scan_mode()
311 	struct cc10001_adc_device *adc_dev;  in cc10001_adc_probe()  local
318 	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*adc_dev));  in cc10001_adc_probe()
322 	adc_dev = iio_priv(indio_dev);  in cc10001_adc_probe()
328 	adc_dev->reg = devm_regulator_get(&pdev->dev, "vref");  in cc10001_adc_probe()
329 	if (IS_ERR(adc_dev->reg))  in cc10001_adc_probe()
330 		return PTR_ERR(adc_dev->reg);  in cc10001_adc_probe()
332 	ret = regulator_enable(adc_dev->reg);  in cc10001_adc_probe()
342 	adc_dev->reg_base = devm_ioremap_resource(&pdev->dev, res);  in cc10001_adc_probe()
343 	if (IS_ERR(adc_dev->reg_base)) {  in cc10001_adc_probe()
344 		ret = PTR_ERR(adc_dev->reg_base);  in cc10001_adc_probe()
348 	adc_dev->adc_clk = devm_clk_get(&pdev->dev, "adc");  in cc10001_adc_probe()
349 	if (IS_ERR(adc_dev->adc_clk)) {  in cc10001_adc_probe()
351 		ret = PTR_ERR(adc_dev->adc_clk);  in cc10001_adc_probe()
355 	ret = clk_prepare_enable(adc_dev->adc_clk);  in cc10001_adc_probe()
361 	adc_clk_rate = clk_get_rate(adc_dev->adc_clk);  in cc10001_adc_probe()
368 	adc_dev->eoc_delay_ns = NSEC_PER_SEC / adc_clk_rate;  in cc10001_adc_probe()
369 	adc_dev->start_delay_ns = adc_dev->eoc_delay_ns * CC10001_WAIT_CYCLES;  in cc10001_adc_probe()
376 	mutex_init(&adc_dev->lock);  in cc10001_adc_probe()
394 	clk_disable_unprepare(adc_dev->adc_clk);  in cc10001_adc_probe()
396 	regulator_disable(adc_dev->reg);  in cc10001_adc_probe()
403 	struct cc10001_adc_device *adc_dev = iio_priv(indio_dev);  in cc10001_adc_remove()  local
407 	clk_disable_unprepare(adc_dev->adc_clk);  in cc10001_adc_remove()
408 	regulator_disable(adc_dev->reg);  in cc10001_adc_remove()