66 static inline void cc10001_adc_write_reg(struct cc10001_adc_device *adc_dev,  in cc10001_adc_write_reg()  argument
69 	writel(val, adc_dev->reg_base + reg);  in cc10001_adc_write_reg()
72 static inline u32 cc10001_adc_read_reg(struct cc10001_adc_device *adc_dev,  in cc10001_adc_read_reg()  argument
75 	return readl(adc_dev->reg_base + reg);  in cc10001_adc_read_reg()
78 static void cc10001_adc_power_up(struct cc10001_adc_device *adc_dev)  in cc10001_adc_power_up()  argument
80 	cc10001_adc_write_reg(adc_dev, CC10001_ADC_POWER_DOWN, 0);  in cc10001_adc_power_up()
81 	ndelay(adc_dev->start_delay_ns);  in cc10001_adc_power_up()
84 static void cc10001_adc_power_down(struct cc10001_adc_device *adc_dev)  in cc10001_adc_power_down()  argument
86 	cc10001_adc_write_reg(adc_dev, CC10001_ADC_POWER_DOWN,  in cc10001_adc_power_down()
90 static void cc10001_adc_start(struct cc10001_adc_device *adc_dev,  in cc10001_adc_start()  argument
97 	cc10001_adc_write_reg(adc_dev, CC10001_ADC_CONFIG, val);  in cc10001_adc_start()
100 	val = cc10001_adc_read_reg(adc_dev, CC10001_ADC_CONFIG);  in cc10001_adc_start()
102 	cc10001_adc_write_reg(adc_dev, CC10001_ADC_CONFIG, val);  in cc10001_adc_start()
109 	struct cc10001_adc_device *adc_dev = iio_priv(indio_dev);  in cc10001_adc_poll_done()  local
112 	while (!(cc10001_adc_read_reg(adc_dev, CC10001_ADC_EOC) &  in cc10001_adc_poll_done()
121 	while ((cc10001_adc_read_reg(adc_dev, CC10001_ADC_CHSEL_SAMPLED) &  in cc10001_adc_poll_done()
130 	return cc10001_adc_read_reg(adc_dev, CC10001_ADC_DDATA_OUT) &  in cc10001_adc_poll_done()
136 	struct cc10001_adc_device *adc_dev;  in cc10001_adc_trigger_h()  local
147 	adc_dev = iio_priv(indio_dev);  in cc10001_adc_trigger_h()
148 	data = adc_dev->buf;  in cc10001_adc_trigger_h()
150 	mutex_lock(&adc_dev->lock);  in cc10001_adc_trigger_h()
152 	if (!adc_dev->shared)  in cc10001_adc_trigger_h()
153 		cc10001_adc_power_up(adc_dev);  in cc10001_adc_trigger_h()
156 	delay_ns = adc_dev->eoc_delay_ns / CC10001_MAX_POLL_COUNT;  in cc10001_adc_trigger_h()
164 		cc10001_adc_start(adc_dev, channel);  in cc10001_adc_trigger_h()
177 	if (!adc_dev->shared)  in cc10001_adc_trigger_h()
178 		cc10001_adc_power_down(adc_dev);  in cc10001_adc_trigger_h()
180 	mutex_unlock(&adc_dev->lock);  in cc10001_adc_trigger_h()
193 	struct cc10001_adc_device *adc_dev = iio_priv(indio_dev);  in cc10001_adc_read_raw_voltage()  local
197 	if (!adc_dev->shared)  in cc10001_adc_read_raw_voltage()
198 		cc10001_adc_power_up(adc_dev);  in cc10001_adc_read_raw_voltage()
201 	delay_ns = adc_dev->eoc_delay_ns / CC10001_MAX_POLL_COUNT;  in cc10001_adc_read_raw_voltage()
203 	cc10001_adc_start(adc_dev, chan->channel);  in cc10001_adc_read_raw_voltage()
207 	if (!adc_dev->shared)  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()
321 	struct cc10001_adc_device *adc_dev;  in cc10001_adc_probe()  local
327 	indio_dev = devm_iio_device_alloc(dev, sizeof(*adc_dev));  in cc10001_adc_probe()
331 	adc_dev = iio_priv(indio_dev);  in cc10001_adc_probe()
335 		adc_dev->shared = true;  in cc10001_adc_probe()
339 	adc_dev->reg = devm_regulator_get(dev, "vref");  in cc10001_adc_probe()
340 	if (IS_ERR(adc_dev->reg))  in cc10001_adc_probe()
341 		return PTR_ERR(adc_dev->reg);  in cc10001_adc_probe()
343 	ret = regulator_enable(adc_dev->reg);  in cc10001_adc_probe()
347 	ret = devm_add_action_or_reset(dev, cc10001_reg_disable, adc_dev->reg);  in cc10001_adc_probe()
355 	adc_dev->reg_base = devm_platform_ioremap_resource(pdev, 0);  in cc10001_adc_probe()
356 	if (IS_ERR(adc_dev->reg_base))  in cc10001_adc_probe()
357 		return PTR_ERR(adc_dev->reg_base);  in cc10001_adc_probe()
359 	adc_dev->adc_clk = devm_clk_get_enabled(dev, "adc");  in cc10001_adc_probe()
360 	if (IS_ERR(adc_dev->adc_clk)) {  in cc10001_adc_probe()
362 		return PTR_ERR(adc_dev->adc_clk);  in cc10001_adc_probe()
365 	adc_clk_rate = clk_get_rate(adc_dev->adc_clk);  in cc10001_adc_probe()
371 	adc_dev->eoc_delay_ns = NSEC_PER_SEC / adc_clk_rate;  in cc10001_adc_probe()
372 	adc_dev->start_delay_ns = adc_dev->eoc_delay_ns * CC10001_WAIT_CYCLES;  in cc10001_adc_probe()
379 	if (adc_dev->shared)  in cc10001_adc_probe()
380 		cc10001_adc_power_up(adc_dev);  in cc10001_adc_probe()
382 	ret = devm_add_action_or_reset(dev, cc10001_pd_cb, adc_dev);  in cc10001_adc_probe()
390 	mutex_init(&adc_dev->lock);  in cc10001_adc_probe()