1 // SPDX-License-Identifier: GPL-2.0+
12 #include <dm/device-internal.h>
13 #include <dm/uclass-internal.h>
36 	 * 1-st and 3-rd are valid, then channel mask is: 0b1010, so request  in check_channel()
39 	if ((uc_pdata->channel_mask >= mask) && (uc_pdata->channel_mask & mask))  in check_channel()
42 	printf("Error in %s/%s().\nWrong channel selection for device: %s\n",  in check_channel()
43 	       __FILE__, caller_function, dev->name);  in check_channel()
45 	return -EINVAL;  in check_channel()
54 	if (uc_pdata->vdd_supply) {  in adc_supply_enable()
56 		ret = regulator_set_enable(uc_pdata->vdd_supply, true);  in adc_supply_enable()
59 	if (!ret && uc_pdata->vss_supply) {  in adc_supply_enable()
61 		ret = regulator_set_enable(uc_pdata->vss_supply, true);  in adc_supply_enable()
65 		pr_err("%s: can't enable %s-supply!", dev->name, supply_type);  in adc_supply_enable()
75 		return -ENOSYS;  in adc_data_mask()
77 	*data_mask = uc_pdata->data_mask;  in adc_data_mask()
86 		return -ENOSYS;  in adc_channel_mask()
88 	*channel_mask = uc_pdata->channel_mask;  in adc_channel_mask()
97 	if (!ops->stop)  in adc_stop()
98 		return -ENOSYS;  in adc_stop()
100 	return ops->stop(dev);  in adc_stop()
108 	if (!ops->start_channel)  in adc_start_channel()
109 		return -ENOSYS;  in adc_start_channel()
119 	return ops->start_channel(dev, channel);  in adc_start_channel()
127 	if (!ops->start_channels)  in adc_start_channels()
128 		return -ENOSYS;  in adc_start_channels()
138 	return ops->start_channels(dev, channel_mask);  in adc_start_channels()
145 	unsigned int timeout_us = uc_pdata->data_timeout_us;  in adc_channel_data()
148 	if (!ops->channel_data)  in adc_channel_data()
149 		return -ENOSYS;  in adc_channel_data()
156 		ret = ops->channel_data(dev, channel, data);  in adc_channel_data()
157 		if (!ret || ret != -EBUSY)  in adc_channel_data()
162 	} while (timeout_us--);  in adc_channel_data()
171 	unsigned int timeout_us = uc_pdata->multidata_timeout_us;  in adc_channels_data()
175 	if (!ops->channels_data)  in adc_channels_data()
176 		return -ENOSYS;  in adc_channels_data()
183 		ret = ops->channels_data(dev, channel_mask, channels);  in adc_channels_data()
184 		if (!ret || ret != -EBUSY)  in adc_channels_data()
189 	} while (timeout_us--);  in adc_channels_data()
234 		channels->id = channel;  in _adc_channels_single_shot()
235 		channels->data = data;  in _adc_channels_single_shot()
263 	if (ret != -ENOSYS)  in adc_channels_single_shot()
275 	 * This function can't return supply device before its bind.  in adc_vdd_platdata_update()
277 	 * will bind before its supply regulator device, then the below 'get'  in adc_vdd_platdata_update()
280 	if (!uc_pdata->vdd_supply)  in adc_vdd_platdata_update()
283 	ret = regulator_get_value(uc_pdata->vdd_supply);  in adc_vdd_platdata_update()
287 	uc_pdata->vdd_microvolts = ret;  in adc_vdd_platdata_update()
297 	if (!uc_pdata->vss_supply)  in adc_vss_platdata_update()
300 	ret = regulator_get_value(uc_pdata->vss_supply);  in adc_vss_platdata_update()
304 	uc_pdata->vss_microvolts = ret;  in adc_vss_platdata_update()
312 	int ret, value_sign = uc_pdata->vdd_polarity_negative ? -1 : 1;  in adc_vdd_value()
319 	if (uc_pdata->vdd_microvolts == -ENODATA)  in adc_vdd_value()
320 		return -ENODATA;  in adc_vdd_value()
322 	*uV = uc_pdata->vdd_microvolts * value_sign;  in adc_vdd_value()
330 	int ret, value_sign = uc_pdata->vss_polarity_negative ? -1 : 1;  in adc_vss_value()
337 	if (uc_pdata->vss_microvolts == -ENODATA)  in adc_vss_value()
338 		return -ENODATA;  in adc_vss_value()
340 	*uV = uc_pdata->vss_microvolts * value_sign;  in adc_vss_value()
348 	int ret, val, vref;  in adc_raw_to_uV()  local
351 	ret = adc_vdd_value(dev, &vref);  in adc_raw_to_uV()
356 		vref -= val;  in adc_raw_to_uV()
362 	raw64 *= vref;  in adc_raw_to_uV()
375 	prop = "vdd-polarity-negative";  in adc_vdd_platdata_set()
376 	uc_pdata->vdd_polarity_negative = dev_read_bool(dev, prop);  in adc_vdd_platdata_set()
379 	ret = device_get_supply_regulator(dev, "vdd-supply",  in adc_vdd_platdata_set()
380 					  &uc_pdata->vdd_supply);  in adc_vdd_platdata_set()
384 	if (ret != -ENOENT)  in adc_vdd_platdata_set()
387 	/* No vdd-supply phandle. */  in adc_vdd_platdata_set()
388 	prop  = "vdd-microvolts";  in adc_vdd_platdata_set()
389 	uc_pdata->vdd_microvolts = dev_read_u32_default(dev, prop, -ENODATA);  in adc_vdd_platdata_set()
400 	prop = "vss-polarity-negative";  in adc_vss_platdata_set()
401 	uc_pdata->vss_polarity_negative = dev_read_bool(dev, prop);  in adc_vss_platdata_set()
403 	ret = device_get_supply_regulator(dev, "vss-supply",  in adc_vss_platdata_set()
404 					  &uc_pdata->vss_supply);  in adc_vss_platdata_set()
408 	if (ret != -ENOENT)  in adc_vss_platdata_set()
411 	/* No vss-supply phandle. */  in adc_vss_platdata_set()
412 	prop = "vss-microvolts";  in adc_vss_platdata_set()
413 	uc_pdata->vss_microvolts = dev_read_u32_default(dev, prop, -ENODATA);  in adc_vss_platdata_set()
425 		pr_err("%s: Can't update Vdd. Error: %d", dev->name, ret);  in adc_pre_probe()
430 		pr_err("%s: Can't update Vss. Error: %d", dev->name, ret);  in adc_pre_probe()