2 * (c) 2009 Torsten Frenzel <frenzel@os.inf.tu-dresden.de>
3 * economic rights: Technische Universität Dresden (Germany)
5 * This file is part of TUD:OS and distributed under the terms of the
6 * GNU General Public License 2.
7 * Please see the COPYING-GPL-2 file for details.
9 #include <l4/cxx/ipc_stream>
10 #include <l4/vbus/vbus_generic>
11 #include <l4/vbus/vbus_i2c.h>
12 #include <l4/vbus/vdevice-ops.h>
15 l4vbus_i2c_write(l4_cap_idx_t vbus, l4vbus_device_handle_t handle,
16 l4_uint16_t addr, l4_uint8_t sub_addr,
17 l4_uint8_t *buffer, unsigned long size)
19 L4::Ipc_iostream s(l4_utcb());
20 l4vbus_device_msg(handle, L4vbus_i2c_write, s);
21 s << addr << sub_addr << size;
22 s << L4::ipc_buf_cp_out(buffer, size);
23 return l4_error(s.call(vbus));
27 l4vbus_i2c_read(l4_cap_idx_t vbus, l4vbus_device_handle_t handle,
28 l4_uint16_t addr, l4_uint8_t sub_addr,
29 l4_uint8_t *buffer, unsigned long *size)
31 L4::Ipc_iostream s(l4_utcb());
32 l4vbus_device_msg(handle, L4vbus_i2c_read, s);
33 s << addr << sub_addr << *size;
35 int err = l4_error(s.call(vbus));
38 s >> *size >> L4::ipc_buf_cp_in(buffer, *size);