openocd: fix SPDX tag format for files .c

[openocd.git] / src / jtag / core.c

diff --git a/src/jtag/core.c b/src/jtag/core.c
index bbc9877ee9ee48db02632f2a0a8a21bdffef5c02..57480118758bc56e3226ae2a1102f7f0cf7fc7b1 100644 (file)
--- a/src/jtag/core.c
+++ b/src/jtag/core.c
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 /***************************************************************************
  *   Copyright (C) 2009 Zachary T Welch                                    *
  *   zw@superlucidity.net                                                  *
@@ -11,19 +13,6 @@
  *                                                                         *
  *   Copyright (C) 2005 by Dominic Rath                                    *
  *   Dominic.Rath@gmx.de                                                   *
- *                                                                         *
- *   This program is free software; you can redistribute it and/or modify  *
- *   it under the terms of the GNU General Public License as published by  *
- *   the Free Software Foundation; either version 2 of the License, or     *
- *   (at your option) any later version.                                   *
- *                                                                         *
- *   This program is distributed in the hope that it will be useful,       *
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
- *   GNU General Public License for more details.                          *
- *                                                                         *
- *   You should have received a copy of the GNU General Public License     *
- *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  ***************************************************************************/
 
 #ifdef HAVE_CONFIG_H
@@ -147,14 +136,19 @@ int jtag_error_clear(void)
 
 /************/
 
-static bool jtag_poll = 1;
+static bool jtag_poll = true;
+static bool jtag_poll_en = true;
 
 bool is_jtag_poll_safe(void)
 {
        /* Polling can be disabled explicitly with set_enabled(false).
+        * It can also be masked with mask().
         * It is also implicitly disabled while TRST is active and
         * while SRST is gating the JTAG clock.
         */
+       if (!jtag_poll_en)
+               return false;
+
        if (!transport_is_jtag())
                return jtag_poll;
 
@@ -173,6 +167,18 @@ void jtag_poll_set_enabled(bool value)
        jtag_poll = value;
 }
 
+bool jtag_poll_mask(void)
+{
+       bool retval = jtag_poll_en;
+       jtag_poll_en = false;
+       return retval;
+}
+
+void jtag_poll_unmask(bool saved)
+{
+       jtag_poll_en = saved;
+}
+
 /************/
 
 struct jtag_tap *jtag_all_taps(void)