38 static int _read_reg(struct w1_slave *sl, u8 address, unsigned char* buf)  in _read_reg()  argument
41 	dev_dbg(&sl->dev,  in _read_reg()
43 			sl, (unsigned int)address, buf);  in _read_reg()
48 	mutex_lock(&sl->master->bus_mutex);  in _read_reg()
49 	dev_dbg(&sl->dev, "mutex locked");  in _read_reg()
51 	if (w1_reset_select_slave(sl)) {  in _read_reg()
52 		mutex_unlock(&sl->master->bus_mutex);  in _read_reg()
59 	w1_write_block(sl->master, wrbuf, 3);  in _read_reg()
60 	*buf = w1_read_8(sl->master);  in _read_reg()
62 	mutex_unlock(&sl->master->bus_mutex);  in _read_reg()
63 	dev_dbg(&sl->dev, "mutex unlocked");  in _read_reg()
140 static bool optional_read_back_valid(struct w1_slave *sl, u8 expected)  in optional_read_back_valid()  argument
144 	if (w1_reset_resume_command(sl->master))  in optional_read_back_valid()
151 	w1_write_block(sl->master, w1_buf, 3);  in optional_read_back_valid()
153 	return (w1_read_8(sl->master) == expected);  in optional_read_back_valid()
156 static bool optional_read_back_valid(struct w1_slave *sl, u8 expected)  in optional_read_back_valid()  argument
166 	struct w1_slave *sl = kobj_to_w1_slave(kobj);  in output_write()  local
174 	dev_dbg(&sl->dev, "locking mutex for write_output");  in output_write()
175 	mutex_lock(&sl->master->bus_mutex);  in output_write()
176 	dev_dbg(&sl->dev, "mutex locked");  in output_write()
178 	if (w1_reset_select_slave(sl))  in output_write()
186 		w1_write_block(sl->master, w1_buf, 3);  in output_write()
188 		if (w1_read_8(sl->master) == W1_F29_SUCCESS_CONFIRM_BYTE &&  in output_write()
189 		    optional_read_back_valid(sl, *buf)) {  in output_write()
194 		if (w1_reset_resume_command(sl->master))  in output_write()
200 	mutex_unlock(&sl->master->bus_mutex);  in output_write()
202 	dev_dbg(&sl->dev, "%s, mutex unlocked retries:%d\n",  in output_write()
216 	struct w1_slave *sl = kobj_to_w1_slave(kobj);  in activity_write()  local
222 	mutex_lock(&sl->master->bus_mutex);  in activity_write()
224 	if (w1_reset_select_slave(sl))  in activity_write()
228 		w1_write_8(sl->master, W1_F29_FUNC_RESET_ACTIVITY_LATCHES);  in activity_write()
229 		if (w1_read_8(sl->master) == W1_F29_SUCCESS_CONFIRM_BYTE) {  in activity_write()
230 			mutex_unlock(&sl->master->bus_mutex);  in activity_write()
233 		if (w1_reset_resume_command(sl->master))  in activity_write()
238 	mutex_unlock(&sl->master->bus_mutex);  in activity_write()
246 	struct w1_slave *sl = kobj_to_w1_slave(kobj);  in status_control_write()  local
253 	mutex_lock(&sl->master->bus_mutex);  in status_control_write()
255 	if (w1_reset_select_slave(sl))  in status_control_write()
264 		w1_write_block(sl->master, w1_buf, 4);  in status_control_write()
265 		if (w1_reset_resume_command(sl->master))  in status_control_write()
272 		w1_write_block(sl->master, w1_buf, 3);  in status_control_write()
273 		if (w1_read_8(sl->master) == *buf) {  in status_control_write()
275 			mutex_unlock(&sl->master->bus_mutex);  in status_control_write()
280 	mutex_unlock(&sl->master->bus_mutex);  in status_control_write()
291 static int w1_f29_disable_test_mode(struct w1_slave *sl)  in w1_f29_disable_test_mode()  argument
295 	u64 rn = le64_to_cpu(*((u64*)&sl->reg_num));  in w1_f29_disable_test_mode()
300 	mutex_lock(&sl->master->bus_mutex);  in w1_f29_disable_test_mode()
302 	res = w1_reset_bus(sl->master);  in w1_f29_disable_test_mode()
305 	w1_write_block(sl->master, magic, ARRAY_SIZE(magic));  in w1_f29_disable_test_mode()
307 	res = w1_reset_bus(sl->master);  in w1_f29_disable_test_mode()
309 	mutex_unlock(&sl->master->bus_mutex);  in w1_f29_disable_test_mode()