target/linux/ar71xx/files/arch/mips/ar71xx/ar71xx.c

   1 /*
   2  *  AR71xx SoC routines
   3  *
   4  *  Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
   5  *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify it
   8  *  under the terms of the GNU General Public License version 2 as published
   9  *  by the Free Software Foundation.
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/module.h>
  14 #include <linux/types.h>
  15
  16 #include <asm/mach-ar71xx/ar71xx.h>
  17
  18 void __iomem *ar71xx_ddr_base;
  19 void __iomem *ar71xx_pll_base;
  20 void __iomem *ar71xx_reset_base;
  21 void __iomem *ar71xx_gpio_base;
  22 void __iomem *ar71xx_usb_ctrl_base;
  23
  24 void ar71xx_device_stop(u32 mask)
  25 {
  26         unsigned long flags;
  27
  28         local_irq_save(flags);
  29         ar71xx_reset_wr(RESET_REG_RESET_MODULE,
  30                         ar71xx_reset_rr(RESET_REG_RESET_MODULE) | mask);
  31         local_irq_restore(flags);
  32 }
  33 EXPORT_SYMBOL_GPL(ar71xx_device_stop);
  34
  35 void ar71xx_device_start(u32 mask)
  36 {
  37         unsigned long flags;
  38
  39         local_irq_save(flags);
  40         ar71xx_reset_wr(RESET_REG_RESET_MODULE,
  41                         ar71xx_reset_rr(RESET_REG_RESET_MODULE) & ~mask);
  42         local_irq_restore(flags);
  43 }
  44 EXPORT_SYMBOL_GPL(ar71xx_device_start);
  45
  46 void ar71xx_ddr_flush(u32 reg)
  47 {
  48         ar71xx_ddr_wr(reg, 1);
  49         while ((ar71xx_ddr_rr(reg) & 0x1));
  50
  51         ar71xx_ddr_wr(reg, 1);
  52         while ((ar71xx_ddr_rr(reg) & 0x1));
  53 }
  54 EXPORT_SYMBOL_GPL(ar71xx_ddr_flush);
  55