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| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-11-23 19:42:09 -0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-11-23 19:42:09 -0200 |
| commit | 12cbfd0a3c52a52c2948c91b9e62e73c468d1572 (patch) | |
| tree | 9252b3929159a83fc81ca0a48706bfa959660967 /arch/hexagon/lib/io.c | |
| parent | b32e724308300a6ecead0f4895f0452a06a4291d (diff) | |
| parent | cfcfc9eca2bcbd26a8e206baeb005b055dbf8e37 (diff) | |
Merge tag 'v3.2-rc2' into staging/for_v3.3
* tag 'v3.2-rc2': (3068 commits)
Linux 3.2-rc2
hfs: add sanity check for file name length
fsl-rio: fix compile error
blackfin: Fixup export.h includes
Blackfin: add serial TX IRQ in individual platform resource
virtio-pci: fix use after free
ACPI / cpuidle: Remove acpi_idle_suspend (to fix suspend regression)
drm/radeon/kms/combios: fix dynamic allocation of PM clock modes
[CPUFREQ] db8500: fix build error due to undeclared i variable
bma023: Add SFI translation for this device
vrtc: change its year offset from 1960 to 1972
ce4100: fix a build error
arm/imx: fix imx6q mmc error when mounting rootfs
arm/imx: fix AUTO_ZRELADDR selection
arm/imx: fix the references to ARCH_MX3
ARM: mx51/53: set pwm clock parent to ipg_perclk
btrfs: rename the option to nospace_cache
drm/radeon/kms/pm: switch to dynamically allocating clock mode array
drm/radeon/kms: optimize r600_pm_profile_init
drm/radeon/kms/pm: add a proper pm profile init function for fusion
...
Conflicts:
drivers/media/radio/Kconfig
Diffstat (limited to 'arch/hexagon/lib/io.c')
| -rw-r--r-- | arch/hexagon/lib/io.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/arch/hexagon/lib/io.c b/arch/hexagon/lib/io.c new file mode 100644 index 000000000000..8ae47ba0e705 --- /dev/null +++ b/arch/hexagon/lib/io.c @@ -0,0 +1,91 @@ +/* + * I/O access functions for Hexagon + * + * Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * 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, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + */ + +#include <asm/io.h> + +/* These are all FIFO routines! */ + +/* + * __raw_readsw - read words a short at a time + * @addr: source address + * @data: data address + * @len: number of shorts to read + */ +void __raw_readsw(const void __iomem *addr, void *data, int len) +{ + const volatile short int *src = (short int *) addr; + short int *dst = (short int *) data; + + if ((u32)data & 0x1) + panic("unaligned pointer to readsw"); + + while (len-- > 0) + *dst++ = *src; + +} + +/* + * __raw_writesw - read words a short at a time + * @addr: source address + * @data: data address + * @len: number of shorts to read + */ +void __raw_writesw(void __iomem *addr, const void *data, int len) +{ + const short int *src = (short int *)data; + volatile short int *dst = (short int *)addr; + + if ((u32)data & 0x1) + panic("unaligned pointer to writesw"); + + while (len-- > 0) + *dst = *src++; + + +} + +/* Pretty sure len is pre-adjusted for the length of the access already */ +void __raw_readsl(const void __iomem *addr, void *data, int len) +{ + const volatile long *src = (long *) addr; + long *dst = (long *) data; + + if ((u32)data & 0x3) + panic("unaligned pointer to readsl"); + + while (len-- > 0) + *dst++ = *src; + + +} + +void __raw_writesl(void __iomem *addr, const void *data, int len) +{ + const long *src = (long *)data; + volatile long *dst = (long *)addr; + + if ((u32)data & 0x3) + panic("unaligned pointer to writesl"); + + while (len-- > 0) + *dst = *src++; + + +} |