arch/arm/mach-omap2/control.c

   1 /*
   2  * OMAP2/3 System Control Module register access
   3  *
   4  * Copyright (C) 2007 Texas Instruments, Inc.
   5  * Copyright (C) 2007 Nokia Corporation
   6  *
   7  * Written by Paul Walmsley
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13 #undef DEBUG
  14
  15 #include <linux/kernel.h>
  16 #include <linux/io.h>
  17
  18 #include <asm/arch/control.h>
  19
  20 static u32 omap2_ctrl_base;
  21
  22 #define OMAP_CTRL_REGADDR(reg)                                  \
  23         (__force void __iomem *)IO_ADDRESS(omap2_ctrl_base + (reg))
  24
  25 void omap_ctrl_base_set(u32 base)
  26 {
  27         omap2_ctrl_base = base;
  28 }
  29
  30 u32 omap_ctrl_base_get(void)
  31 {
  32         return omap2_ctrl_base;
  33 }
  34
  35 u8 omap_ctrl_readb(u16 offset)
  36 {
  37         return __raw_readb(OMAP_CTRL_REGADDR(offset));
  38 }
  39
  40 u16 omap_ctrl_readw(u16 offset)
  41 {
  42         return __raw_readw(OMAP_CTRL_REGADDR(offset));
  43 }
  44
  45 u32 omap_ctrl_readl(u16 offset)
  46 {
  47         return __raw_readl(OMAP_CTRL_REGADDR(offset));
  48 }
  49
  50 void omap_ctrl_writeb(u8 val, u16 offset)
  51 {
  52         pr_debug("omap_ctrl_writeb: writing 0x%0x to 0x%0x\n", val,
  53                  (__force u32)OMAP_CTRL_REGADDR(offset));
  54
  55         __raw_writeb(val, OMAP_CTRL_REGADDR(offset));
  56 }
  57
  58 void omap_ctrl_writew(u16 val, u16 offset)
  59 {
  60         pr_debug("omap_ctrl_writew: writing 0x%0x to 0x%0x\n", val,
  61                  (__force u32)OMAP_CTRL_REGADDR(offset));
  62
  63         __raw_writew(val, OMAP_CTRL_REGADDR(offset));
  64 }
  65
  66 void omap_ctrl_writel(u32 val, u16 offset)
  67 {
  68         pr_debug("omap_ctrl_writel: writing 0x%0x to 0x%0x\n", val,
  69                  (__force u32)OMAP_CTRL_REGADDR(offset));
  70
  71         __raw_writel(val, OMAP_CTRL_REGADDR(offset));
  72 }
  73