diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/plat-mxc/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/plat-mxc/io.c | 68 |
2 files changed, 69 insertions, 1 deletions
diff --git a/arch/arm/plat-mxc/Makefile b/arch/arm/plat-mxc/Makefile index eed2fc287b7c..208cab211bbc 100644 --- a/arch/arm/plat-mxc/Makefile +++ b/arch/arm/plat-mxc/Makefile @@ -3,7 +3,7 @@ # # Common support -obj-y := gpio.o clock.o wdog.o snoop.o irq.o +obj-y := gpio.o clock.o wdog.o snoop.o irq.o io.o ifneq ($(CONFIG_ARCH_MX27),y) obj-y += time.o cpu_common.o spba.o sdma/ diff --git a/arch/arm/plat-mxc/io.c b/arch/arm/plat-mxc/io.c new file mode 100644 index 000000000000..ba6cc78055df --- /dev/null +++ b/arch/arm/plat-mxc/io.c @@ -0,0 +1,68 @@ +/* + * MX27/MX31 custom ioremap implementation. + * + * Copyright 2007 Sony Corporation. + * 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; version 2 of the License. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * 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., + * 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ +#include <linux/kernel.h> +#include <linux/module.h> +#include <asm/hardware.h> +#include <asm/io.h> + +void __iomem *__mxc_ioremap(unsigned long cookie, size_t size, + unsigned int mtype) +{ + unsigned long addr; + void __iomem *retval; + + addr = IO_ADDRESS(cookie); + +#ifdef DEBUG + __print_symbol("%s ", __builtin_return_address(0)); + printk("called %s(): ", __FUNCTION__); +#endif + + if (addr != 0xdeadbeef) { + retval = (void __iomem *)addr; +#ifdef DEBUG + printk("0x%08lx -> 0x%p\n", cookie, retval); +#endif + } else { + retval = __arm_ioremap(cookie, size, mtype); +#ifdef DEBUG + printk("Not using static map: 0x%08lx -> 0x%p\n", cookie, retval); +#endif + } + + return retval; +} +EXPORT_SYMBOL(__mxc_ioremap); + +void __mxc_iounmap(void __iomem *addr) +{ + if (IS_STATIC_MAPPED((unsigned long)addr)) + return; + __iounmap(addr); +} +EXPORT_SYMBOL(__mxc_iounmap); + + + |