drivers/i3c/master.c

97 i3c_bus_to_i3c_master(struct i3c_bus *i3cbus)
99 	return container_of(i3cbus, struct i3c_master_controller, bus);
417 static void i3c_bus_cleanup(struct i3c_bus *i3cbus)
420 	idr_remove(&i3c_bus_idr, i3cbus->id);
424 static int i3c_bus_init(struct i3c_bus *i3cbus, struct device_node *np)
428 	init_rwsem(&i3cbus->lock);
429 	INIT_LIST_HEAD(&i3cbus->devs.i2c);
430 	INIT_LIST_HEAD(&i3cbus->devs.i3c);
431 	i3c_bus_init_addrslots(i3cbus);
432 	i3cbus->mode = I3C_BUS_MODE_PURE;
446 	ret = idr_alloc(&i3c_bus_idr, i3cbus, start, end, GFP_KERNEL);
452 	i3cbus->id = ret;
498 	struct i3c_bus *i3cbus = dev_to_i3cbus(dev);
501 	i3c_bus_normaluse_lock(i3cbus);
502 	if (i3cbus->mode < 0 ||
503 	    i3cbus->mode >= ARRAY_SIZE(i3c_bus_mode_strings) ||
504 	    !i3c_bus_mode_strings[i3cbus->mode])
507 		ret = sprintf(buf, "%s\n", i3c_bus_mode_strings[i3cbus->mode]);
508 	i3c_bus_normaluse_unlock(i3cbus);
518 	struct i3c_bus *i3cbus = dev_to_i3cbus(dev);
521 	i3c_bus_normaluse_lock(i3cbus);
522 	ret = sprintf(buf, "%d-%llx\n", i3cbus->id,
523 		      i3cbus->cur_master->info.pid);
524 	i3c_bus_normaluse_unlock(i3cbus);
534 	struct i3c_bus *i3cbus = dev_to_i3cbus(dev);
537 	i3c_bus_normaluse_lock(i3cbus);
538 	ret = sprintf(buf, "%ld\n", i3cbus->scl_rate.i3c);
539 	i3c_bus_normaluse_unlock(i3cbus);
549 	struct i3c_bus *i3cbus = dev_to_i3cbus(dev);
552 	i3c_bus_normaluse_lock(i3cbus);
553 	ret = sprintf(buf, "%ld\n", i3cbus->scl_rate.i2c);
554 	i3c_bus_normaluse_unlock(i3cbus);
587 	struct i3c_bus *i3cbus = dev_to_i3cbus(dev);
591 	if (!i3cbus->cur_master)
597 	ret = i3c_set_hotjoin(i3cbus->cur_master->common.master, res);
630 	struct i3c_bus *i3cbus = dev_to_i3cbus(dev);
633 	i3c_bus_normaluse_lock(i3cbus);
634 	ret = sysfs_emit(buf, "%d\n", i3cbus->cur_master->common.master->hotjoin);
635 	i3c_bus_normaluse_unlock(i3cbus);
675 static int i3c_bus_set_mode(struct i3c_bus *i3cbus, enum i3c_bus_mode mode,
678 	struct i3c_master_controller *master = i3c_bus_to_i3c_master(i3cbus);
680 	i3cbus->mode = mode;
682 	switch (i3cbus->mode) {
684 		if (!i3cbus->scl_rate.i3c)
685 			i3cbus->scl_rate.i3c = I3C_BUS_TYP_I3C_SCL_RATE;
689 		if (!i3cbus->scl_rate.i3c)
690 			i3cbus->scl_rate.i3c = I3C_BUS_TYP_I3C_SCL_RATE;
691 		if (!i3cbus->scl_rate.i2c)
692 			i3cbus->scl_rate.i2c = max_i2c_scl_rate;
695 		if (!i3cbus->scl_rate.i2c)
696 			i3cbus->scl_rate.i2c = max_i2c_scl_rate;
697 		if (!i3cbus->scl_rate.i3c ||
698 		    i3cbus->scl_rate.i3c > i3cbus->scl_rate.i2c)
699 			i3cbus->scl_rate.i3c = i3cbus->scl_rate.i2c;
706 		i3cbus->scl_rate.i2c, i3cbus->scl_rate.i3c);
712 	if (i3cbus->scl_rate.i3c > I3C_BUS_MAX_I3C_SCL_RATE ||
713 	    i3cbus->scl_rate.i2c > I3C_BUS_I2C_FM_PLUS_SCL_RATE)
2726 	struct i3c_bus *i3cbus = i3c_master_get_bus(master);
2749 	ret = i3c_bus_init(i3cbus, master->dev.of_node);
2754 	dev_set_name(&master->dev, "i3c-%d", i3cbus->id);
2787 	ret = i3c_bus_set_mode(i3cbus, mode, i2c_scl_rate);
2813 	i3c_bus_notify(i3cbus, I3C_NOTIFY_BUS_ADD);