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authorJ Freyensee <james_p_freyensee@linux.intel.com>2011-05-06 19:56:49 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2011-05-13 19:31:00 -0400
commit0b61d2acb1ea48d8eba798ed92759b7f1b0f4209 (patch)
tree48827990afa819f2a81929450c69b39aa8255c4d /include/linux
parentcb9e84c4123088f4641009f5217b7d32b307992f (diff)
Intel PTI implementaiton of MIPI 1149.7.
The PTI (Parallel Trace Interface) driver directs trace data routed from various parts in the system out through an Intel Penwell PTI port and out of the mobile device for analysis with a debugging tool (Lauterbach or Fido). Though n_tracesink and n_tracerouter line discipline drivers are used to extract modem tracing data to the PTI driver and other parts of an Intel mobile solution, the PTI driver can be used independent of n_tracesink and n_tracerouter. You should select this driver if the target kernel is meant for an Intel Atom (non-netbook) mobile device containing a MIPI P1149.7 standard implementation. Signed-off-by: J Freyensee <james_p_freyensee@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/pti.h42
1 files changed, 42 insertions, 0 deletions
diff --git a/include/linux/pti.h b/include/linux/pti.h
new file mode 100644
index 000000000000..81af667bb2d5
--- /dev/null
+++ b/include/linux/pti.h
@@ -0,0 +1,42 @@
1/*
2 * Copyright (C) Intel 2011
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
14 *
15 * The PTI (Parallel Trace Interface) driver directs trace data routed from
16 * various parts in the system out through the Intel Penwell PTI port and
17 * out of the mobile device for analysis with a debugging tool
18 * (Lauterbach, Fido). This is part of a solution for the MIPI P1149.7,
19 * compact JTAG, standard.
20 *
21 * This header file will allow other parts of the OS to use the
22 * interface to write out it's contents for debugging a mobile system.
23 */
24
25#ifndef PTI_H_
26#define PTI_H_
27
28/* offset for last dword of any PTI message. Part of MIPI P1149.7 */
29#define PTI_LASTDWORD_DTS 0x30
30
31/* basic structure used as a write address to the PTI HW */
32struct pti_masterchannel {
33 u8 master;
34 u8 channel;
35};
36
37/* the following functions are defined in misc/pti.c */
38void pti_writedata(struct pti_masterchannel *mc, u8 *buf, int count);
39struct pti_masterchannel *pti_request_masterchannel(u8 type);
40void pti_release_masterchannel(struct pti_masterchannel *mc);
41
42#endif /*PTI_H_*/