71 static inline void cc10001_adc_write_reg(struct cc10001_adc_device *adc_dev,  in cc10001_adc_write_reg()  argument
74 	writel(val, adc_dev->reg_base + reg);  in cc10001_adc_write_reg()
77 static inline u32 cc10001_adc_read_reg(struct cc10001_adc_device *adc_dev,  in cc10001_adc_read_reg()  argument
80 	return readl(adc_dev->reg_base + reg);  in cc10001_adc_read_reg()
83 static void cc10001_adc_power_up(struct cc10001_adc_device *adc_dev)  in cc10001_adc_power_up()  argument
85 	cc10001_adc_write_reg(adc_dev, CC10001_ADC_POWER_DOWN, 0);  in cc10001_adc_power_up()
86 	ndelay(adc_dev->start_delay_ns);  in cc10001_adc_power_up()
89 static void cc10001_adc_power_down(struct cc10001_adc_device *adc_dev)  in cc10001_adc_power_down()  argument
91 	cc10001_adc_write_reg(adc_dev, CC10001_ADC_POWER_DOWN,  in cc10001_adc_power_down()
95 static void cc10001_adc_start(struct cc10001_adc_device *adc_dev,  in cc10001_adc_start()  argument
102 	cc10001_adc_write_reg(adc_dev, CC10001_ADC_CONFIG, val);  in cc10001_adc_start()
105 	val = cc10001_adc_read_reg(adc_dev, CC10001_ADC_CONFIG);  in cc10001_adc_start()
107 	cc10001_adc_write_reg(adc_dev, CC10001_ADC_CONFIG, val);  in cc10001_adc_start()
114 	struct cc10001_adc_device *adc_dev = iio_priv(indio_dev);  in cc10001_adc_poll_done()  local
117 	while (!(cc10001_adc_read_reg(adc_dev, CC10001_ADC_EOC) &  in cc10001_adc_poll_done()
126 	while ((cc10001_adc_read_reg(adc_dev, CC10001_ADC_CHSEL_SAMPLED) &  in cc10001_adc_poll_done()
135 	return cc10001_adc_read_reg(adc_dev, CC10001_ADC_DDATA_OUT) &  in cc10001_adc_poll_done()
141 	struct cc10001_adc_device *adc_dev;  in cc10001_adc_trigger_h()  local
152 	adc_dev = iio_priv(indio_dev);  in cc10001_adc_trigger_h()
153 	data = adc_dev->buf;  in cc10001_adc_trigger_h()
155 	mutex_lock(&adc_dev->lock);  in cc10001_adc_trigger_h()
157 	if (!adc_dev->shared)  in cc10001_adc_trigger_h()
158 		cc10001_adc_power_up(adc_dev);  in cc10001_adc_trigger_h()
161 	delay_ns = adc_dev->eoc_delay_ns / CC10001_MAX_POLL_COUNT;  in cc10001_adc_trigger_h()
169 		cc10001_adc_start(adc_dev, channel);  in cc10001_adc_trigger_h()
182 	if (!adc_dev->shared)  in cc10001_adc_trigger_h()
183 		cc10001_adc_power_down(adc_dev);  in cc10001_adc_trigger_h()
185 	mutex_unlock(&adc_dev->lock);  in cc10001_adc_trigger_h()
198 	struct cc10001_adc_device *adc_dev = iio_priv(indio_dev);  in cc10001_adc_read_raw_voltage()  local
202 	if (!adc_dev->shared)  in cc10001_adc_read_raw_voltage()
203 		cc10001_adc_power_up(adc_dev);  in cc10001_adc_read_raw_voltage()
206 	delay_ns = adc_dev->eoc_delay_ns / CC10001_MAX_POLL_COUNT;  in cc10001_adc_read_raw_voltage()
208 	cc10001_adc_start(adc_dev, chan->channel);  in cc10001_adc_read_raw_voltage()
212 	if (!adc_dev->shared)  in cc10001_adc_read_raw_voltage()
213 		cc10001_adc_power_down(adc_dev);  in cc10001_adc_read_raw_voltage()
222 	struct cc10001_adc_device *adc_dev = iio_priv(indio_dev);  in cc10001_adc_read_raw()  local
229 		mutex_lock(&adc_dev->lock);  in cc10001_adc_read_raw()
231 		mutex_unlock(&adc_dev->lock);  in cc10001_adc_read_raw()
238 		ret = regulator_get_voltage(adc_dev->reg);  in cc10001_adc_read_raw()
254 	struct cc10001_adc_device *adc_dev = iio_priv(indio_dev);  in cc10001_update_scan_mode()  local
256 	kfree(adc_dev->buf);  in cc10001_update_scan_mode()
257 	adc_dev->buf = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);  in cc10001_update_scan_mode()
258 	if (!adc_dev->buf)  in cc10001_update_scan_mode()
316 	struct cc10001_adc_device *adc_dev;  in cc10001_adc_probe()  local
323 	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*adc_dev));  in cc10001_adc_probe()
327 	adc_dev = iio_priv(indio_dev);  in cc10001_adc_probe()
331 		adc_dev->shared = true;  in cc10001_adc_probe()
335 	adc_dev->reg = devm_regulator_get(&pdev->dev, "vref");  in cc10001_adc_probe()
336 	if (IS_ERR(adc_dev->reg))  in cc10001_adc_probe()
337 		return PTR_ERR(adc_dev->reg);  in cc10001_adc_probe()
339 	ret = regulator_enable(adc_dev->reg);  in cc10001_adc_probe()
349 	adc_dev->reg_base = devm_ioremap_resource(&pdev->dev, res);  in cc10001_adc_probe()
350 	if (IS_ERR(adc_dev->reg_base)) {  in cc10001_adc_probe()
351 		ret = PTR_ERR(adc_dev->reg_base);  in cc10001_adc_probe()
355 	adc_dev->adc_clk = devm_clk_get(&pdev->dev, "adc");  in cc10001_adc_probe()
356 	if (IS_ERR(adc_dev->adc_clk)) {  in cc10001_adc_probe()
358 		ret = PTR_ERR(adc_dev->adc_clk);  in cc10001_adc_probe()
362 	ret = clk_prepare_enable(adc_dev->adc_clk);  in cc10001_adc_probe()
368 	adc_clk_rate = clk_get_rate(adc_dev->adc_clk);  in cc10001_adc_probe()
375 	adc_dev->eoc_delay_ns = NSEC_PER_SEC / adc_clk_rate;  in cc10001_adc_probe()
376 	adc_dev->start_delay_ns = adc_dev->eoc_delay_ns * CC10001_WAIT_CYCLES;  in cc10001_adc_probe()
383 	if (adc_dev->shared)  in cc10001_adc_probe()
384 		cc10001_adc_power_up(adc_dev);  in cc10001_adc_probe()
391 	mutex_init(&adc_dev->lock);  in cc10001_adc_probe()
409 	clk_disable_unprepare(adc_dev->adc_clk);  in cc10001_adc_probe()
411 	regulator_disable(adc_dev->reg);  in cc10001_adc_probe()
418 	struct cc10001_adc_device *adc_dev = iio_priv(indio_dev);  in cc10001_adc_remove()  local
420 	cc10001_adc_power_down(adc_dev);  in cc10001_adc_remove()
423 	clk_disable_unprepare(adc_dev->adc_clk);  in cc10001_adc_remove()
424 	regulator_disable(adc_dev->reg);  in cc10001_adc_remove()