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
  17 #include <asm/io.h>
  18
  19 #include <asm/arch/control.h>
  20
  21 static u32 omap2_ctrl_base;
  22
  23 #define OMAP_CTRL_REGADDR(reg)  (void __iomem *)IO_ADDRESS(omap2_ctrl_base \
  24                                                                 + (reg))
  25
  26 void omap_ctrl_base_set(u32 base)
  27 {
  28         omap2_ctrl_base = base;
  29 }
  30
  31 u32 omap_ctrl_base_get(void)
  32 {
  33         return omap2_ctrl_base;
  34 }
  35
  36 u8 omap_ctrl_readb(u16 offset)
  37 {
  38         return __raw_readb(OMAP_CTRL_REGADDR(offset));
  39 }
  40
  41 u16 omap_ctrl_readw(u16 offset)
  42 {
  43         return __raw_readw(OMAP_CTRL_REGADDR(offset));
  44 }
  45
  46 u32 omap_ctrl_readl(u16 offset)
  47 {
  48         return __raw_readl(OMAP_CTRL_REGADDR(offset));
  49 }
  50
  51 void omap_ctrl_writeb(u8 val, u16 offset)
  52 {
  53         pr_debug("omap_ctrl_writeb: writing 0x%0x to 0x%0x\n", val,
  54                  (u32)OMAP_CTRL_REGADDR(offset));
  55
  56         __raw_writeb(val, OMAP_CTRL_REGADDR(offset));
  57 }
  58
  59 void omap_ctrl_writew(u16 val, u16 offset)
  60 {
  61         pr_debug("omap_ctrl_writew: writing 0x%0x to 0x%0x\n", val,
  62                  (u32)OMAP_CTRL_REGADDR(offset));
  63
  64         __raw_writew(val, OMAP_CTRL_REGADDR(offset));
  65 }
  66
  67 void omap_ctrl_writel(u32 val, u16 offset)
  68 {
  69         pr_debug("omap_ctrl_writel: writing 0x%0x to 0x%0x\n", val,
  70                  (u32)OMAP_CTRL_REGADDR(offset));
  71
  72         __raw_writel(val, OMAP_CTRL_REGADDR(offset));
  73 }
  74