1 // SPDX-License-Identifier: GPL-2.0
23 #define ADMFM2000_MIN_GAIN		-31000
24 #define ADMFM2000_DEFAULT_GAIN		-0x20
32 	u32				gain[2];  member
43 			gpiod_set_value_cansleep(st->sw1_ch[i], (chan == 0) ? 1 : 0);  in admfm2000_mode()
44 			gpiod_set_value_cansleep(st->sw2_ch[i], (chan == 0) ? 0 : 1);  in admfm2000_mode()
49 			gpiod_set_value_cansleep(st->sw1_ch[i], (chan == 0) ? 0 : 1);  in admfm2000_mode()
50 			gpiod_set_value_cansleep(st->sw2_ch[i], (chan == 0) ? 1 : 0);  in admfm2000_mode()
54 		return -EINVAL;  in admfm2000_mode()
66 			gpiod_set_value_cansleep(st->dsa1_gpios[i], value & (1 << i));  in admfm2000_attenuation()
70 			gpiod_set_value_cansleep(st->dsa2_gpios[i], value & (1 << i));  in admfm2000_attenuation()
73 		return -EINVAL;  in admfm2000_attenuation()
82 	int gain;  in admfm2000_read_raw()  local
86 		mutex_lock(&st->lock);  in admfm2000_read_raw()
87 		gain = ~(st->gain[chan->channel]) * -1000;  in admfm2000_read_raw()
88 		*val = gain / 1000;  in admfm2000_read_raw()
89 		*val2 = (gain % 1000) * 1000;  in admfm2000_read_raw()
90 		mutex_unlock(&st->lock);  in admfm2000_read_raw()
94 		return -EINVAL;  in admfm2000_read_raw()
103 	int gain, ret;  in admfm2000_write_raw()  local
106 		gain = (val * 1000) - (val2 / 1000);  in admfm2000_write_raw()
108 		gain = (val * 1000) + (val2 / 1000);  in admfm2000_write_raw()
110 	if (gain > ADMFM2000_MAX_GAIN || gain < ADMFM2000_MIN_GAIN)  in admfm2000_write_raw()
111 		return -EINVAL;  in admfm2000_write_raw()
115 		mutex_lock(&st->lock);  in admfm2000_write_raw()
116 		st->gain[chan->channel] = ~((abs(gain) / 1000) & 0x1F);  in admfm2000_write_raw()
118 		ret = admfm2000_attenuation(indio_dev, chan->channel,  in admfm2000_write_raw()
119 					    st->gain[chan->channel]);  in admfm2000_write_raw()
120 		mutex_unlock(&st->lock);  in admfm2000_write_raw()
123 		return -EINVAL;  in admfm2000_write_raw()
135 		return -EINVAL;  in admfm2000_write_raw_get_fmt()
161 	struct platform_device *pdev = to_platform_device(indio_dev->dev.parent);  in admfm2000_channel_config()
162 	struct device *dev = &pdev->dev;  in admfm2000_channel_config()
175 		if (reg >= indio_dev->num_channels)  in admfm2000_channel_config()
176 			return dev_err_probe(dev, -EINVAL, "reg bigger than: %d\n",  in admfm2000_channel_config()
177 					     indio_dev->num_channels);  in admfm2000_channel_config()
179 		if (fwnode_property_present(child, "adi,mixer-mode"))  in admfm2000_channel_config()
186 			sw = st->sw1_ch;  in admfm2000_channel_config()
187 			dsa = st->dsa1_gpios;  in admfm2000_channel_config()
190 			sw = st->sw2_ch;  in admfm2000_channel_config()
191 			dsa = st->dsa2_gpios;  in admfm2000_channel_config()
194 			return -EINVAL;  in admfm2000_channel_config()
202 						     "Failed to get gpios\n");  in admfm2000_channel_config()
211 						     "Failed to get gpios\n");  in admfm2000_channel_config()
224 	struct device *dev = &pdev->dev;  in admfm2000_probe()
231 		return -ENOMEM;  in admfm2000_probe()
235 	indio_dev->name = "admfm2000";  in admfm2000_probe()
236 	indio_dev->num_channels = ARRAY_SIZE(admfm2000_channels);  in admfm2000_probe()
237 	indio_dev->channels = admfm2000_channels;  in admfm2000_probe()
238 	indio_dev->info = &admfm2000_info;  in admfm2000_probe()
239 	indio_dev->modes = INDIO_DIRECT_MODE;  in admfm2000_probe()
241 	st->gain[0] = ADMFM2000_DEFAULT_GAIN;  in admfm2000_probe()
242 	st->gain[1] = ADMFM2000_DEFAULT_GAIN;  in admfm2000_probe()
244 	mutex_init(&st->lock);  in admfm2000_probe()