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 EXPORT_SYMBOL_GPL(ar71xx_ddr_base);
  20
  21 void __iomem *ar71xx_pll_base;
  22 EXPORT_SYMBOL_GPL(ar71xx_pll_base);
  23
  24 void __iomem *ar71xx_reset_base;
  25 EXPORT_SYMBOL_GPL(ar71xx_reset_base);
  26
  27 void __iomem *ar71xx_gpio_base;
  28 EXPORT_SYMBOL_GPL(ar71xx_gpio_base);
  29
  30 void __iomem *ar71xx_usb_ctrl_base;
  31 EXPORT_SYMBOL_GPL(ar71xx_usb_ctrl_base);
  32
  33 void ar71xx_device_stop(u32 mask)
  34 {
  35         unsigned long flags;
  36
  37         local_irq_save(flags);
  38         ar71xx_reset_wr(AR71XX_RESET_REG_RESET_MODULE,
  39                         ar71xx_reset_rr(AR71XX_RESET_REG_RESET_MODULE) | mask);
  40         local_irq_restore(flags);
  41 }
  42 EXPORT_SYMBOL_GPL(ar71xx_device_stop);
  43
  44 void ar71xx_device_start(u32 mask)
  45 {
  46         unsigned long flags;
  47
  48         local_irq_save(flags);
  49         ar71xx_reset_wr(AR71XX_RESET_REG_RESET_MODULE,
  50                         ar71xx_reset_rr(AR71XX_RESET_REG_RESET_MODULE) & ~mask);
  51         local_irq_restore(flags);
  52 }
  53 EXPORT_SYMBOL_GPL(ar71xx_device_start);
  54
  55 void ar71xx_ddr_flush(u32 reg)
  56 {
  57         ar71xx_ddr_wr(reg, 1);
  58         while ((ar71xx_ddr_rr(reg) & 0x1));
  59
  60         ar71xx_ddr_wr(reg, 1);
  61         while ((ar71xx_ddr_rr(reg) & 0x1));
  62 }
  63 EXPORT_SYMBOL_GPL(ar71xx_ddr_flush);
  64