Merge commit 'origin/master' into next

Manual merge of:
	arch/powerpc/include/asm/elf.h
	drivers/i2c/busses/i2c-mpc.c

1 files changed, 91 insertions, 0 deletions

diff --git a/drivers/net/wireless/ar9170/cmd.h b/drivers/net/wireless/ar9170/cmd.h
new file mode 100644
index 000000000000..a4f0e50e52b4
--- /dev/null
+++ b/drivers/net/wireless/ar9170/cmd.h
@@ -0,0 +1,91 @@
+/*
+ * Atheros AR9170 driver
+ *
+ * Basic HW register/memory/command access functions
+ *
+ * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
+ *
+ * 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; see the file COPYING.  If not, see
+ * http://www.gnu.org/licenses/.
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ *    Copyright (c) 2007-2008 Atheros Communications, Inc.
+ *
+ *    Permission to use, copy, modify, and/or distribute this software for any
+ *    purpose with or without fee is hereby granted, provided that the above
+ *    copyright notice and this permission notice appear in all copies.
+ *
+ *    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ *    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ *    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ *    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ *    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ *    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ *    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#ifndef __CMD_H
+#define __CMD_H
+
+#include "ar9170.h"
+
+/* basic HW access */
+int ar9170_write_mem(struct ar9170 *ar, const __le32 *data, size_t len);
+int ar9170_write_reg(struct ar9170 *ar, const u32 reg, const u32 val);
+int ar9170_read_reg(struct ar9170 *ar, u32 reg, u32 *val);
+int ar9170_echo_test(struct ar9170 *ar, u32 v);
+
+/*
+ * Macros to facilitate writing multiple registers in a single
+ * write-combining USB command. Note that when the first group
+ * fails the whole thing will fail without any others attempted,
+ * but you won't know which write in the group failed.
+ */
+#define ar9170_regwrite_begin(ar)					\
+do {									\
+	int __nreg = 0, __err = 0;					\
+	struct ar9170 *__ar = ar;
+
+#define ar9170_regwrite(r, v) do {					\
+	__ar->cmdbuf[2 * __nreg + 1] = cpu_to_le32(r);			\
+	__ar->cmdbuf[2 * __nreg + 2] = cpu_to_le32(v);			\
+	__nreg++;							\
+	if ((__nreg >= PAYLOAD_MAX/2)) {				\
+		if (IS_ACCEPTING_CMD(__ar))				\
+			__err = ar->exec_cmd(__ar, AR9170_CMD_WREG,	\
+					     8 * __nreg,		\
+					     (u8 *) &__ar->cmdbuf[1],	\
+					     0, NULL);			\
+		__nreg = 0;						\
+		if (__err)						\
+			goto __regwrite_out;				\
+	}								\
+} while (0)
+
+#define ar9170_regwrite_finish()					\
+__regwrite_out :							\
+	if (__nreg) {							\
+		if (IS_ACCEPTING_CMD(__ar))				\
+			__err = ar->exec_cmd(__ar, AR9170_CMD_WREG,	\
+					     8 * __nreg, 		\
+					     (u8 *) &__ar->cmdbuf[1],	\
+					     0, NULL);			\
+		__nreg = 0;						\
+	}
+
+#define ar9170_regwrite_result()					\
+	__err;								\
+} while (0);
+
+#endif /* __CMD_H */