1 // SPDX-License-Identifier: GPL-2.0-or-later
23 MODULE_DESCRIPTION("Driver for 1-wire Dallas DS2405 PIO.");
24 MODULE_ALIAS("w1-family-" __stringify(W1_FAMILY_DS2405));
28 	struct w1_master *dev = sl->master;  in w1_ds2405_select()
30 	u64 dev_addr = le64_to_cpu(*(u64 *)&sl->reg_num);  in w1_ds2405_select()
37 	 * We cannot use a normal Match ROM command  in w1_ds2405_select()
53 			/* wrong direction taken - no such device */  in w1_ds2405_select()
68 	return -ENODEV;  in w1_ds2405_read_pio()
75 	struct w1_master *dev = sl->master;  in state_show()
81 	ret = mutex_lock_interruptible(&dev->bus_mutex);  in state_show()
86 		f_retval = -ENODEV;  in state_show()
93 		dev_err(device, "non-consistent state %x\n", state);  in state_show()
94 		f_retval = -EIO;  in state_show()
103 	mutex_unlock(&dev->bus_mutex);  in state_show()
112 	struct w1_master *dev = sl->master;  in output_show()
117 	ret = mutex_lock_interruptible(&dev->bus_mutex);  in output_show()
132 	mutex_unlock(&dev->bus_mutex);  in output_show()
142 	struct w1_master *dev = sl->master;  in output_store()
145 	unsigned int val;  in output_store()  local
149 		return -EINVAL;  in output_store()
151 	if (sscanf(buf, " %u%n", &val, &ret) < 1)  in output_store()
152 		return -EINVAL;  in output_store()
154 	if (val != 0 && val != 1)  in output_store()
155 		return -EINVAL;  in output_store()
159 	ret = mutex_lock_interruptible(&dev->bus_mutex);  in output_store()
169 	if (current_pio == val)  in output_store()
173 		f_retval = -ENODEV;  in output_store()
178 	 * can't use w1_reset_select_slave() here since it uses Skip ROM if  in output_store()
182 		u64 dev_addr = le64_to_cpu(*(u64 *)&sl->reg_num);  in output_store()
193 	mutex_unlock(&dev->bus_mutex);  in output_store()