diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
---|---|---|
committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/staging/gdm724x/gdm_endian.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/staging/gdm724x/gdm_endian.c')
-rw-r--r-- | kernel/drivers/staging/gdm724x/gdm_endian.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/kernel/drivers/staging/gdm724x/gdm_endian.c b/kernel/drivers/staging/gdm724x/gdm_endian.c new file mode 100644 index 000000000..f6cc90ae9 --- /dev/null +++ b/kernel/drivers/staging/gdm724x/gdm_endian.c @@ -0,0 +1,67 @@ +/* + * Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * 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. + */ + +#include <linux/slab.h> +#include "gdm_endian.h" + +void gdm_set_endian(struct gdm_endian *ed, u8 dev_endian) +{ + u8 a[2] = {0x12, 0x34}; + u8 b[2] = {0, }; + u16 c = 0x1234; + + if (dev_endian == ENDIANNESS_BIG) + ed->dev_ed = ENDIANNESS_BIG; + else + ed->dev_ed = ENDIANNESS_LITTLE; + + memcpy(b, &c, 2); + + if (a[0] != b[0]) + ed->host_ed = ENDIANNESS_LITTLE; + else + ed->host_ed = ENDIANNESS_BIG; + +} + +u16 gdm_cpu_to_dev16(struct gdm_endian *ed, u16 x) +{ + if (ed->dev_ed == ed->host_ed) + return x; + + return Endian16_Swap(x); +} + +u16 gdm_dev16_to_cpu(struct gdm_endian *ed, u16 x) +{ + if (ed->dev_ed == ed->host_ed) + return x; + + return Endian16_Swap(x); +} + +u32 gdm_cpu_to_dev32(struct gdm_endian *ed, u32 x) +{ + if (ed->dev_ed == ed->host_ed) + return x; + + return Endian32_Swap(x); +} + +u32 gdm_dev32_to_cpu(struct gdm_endian *ed, u32 x) +{ + if (ed->dev_ed == ed->host_ed) + return x; + + return Endian32_Swap(x); +} |