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         u32 t;
  37
  38         switch (ar71xx_soc) {
  39         case AR71XX_SOC_AR7130:
  40         case AR71XX_SOC_AR7141:
  41         case AR71XX_SOC_AR7161:
  42                 local_irq_save(flags);
  43                 t = ar71xx_reset_rr(AR71XX_RESET_REG_RESET_MODULE);
  44                 ar71xx_reset_wr(AR71XX_RESET_REG_RESET_MODULE, t | mask);
  45                 local_irq_restore(flags);
  46                 break;
  47
  48         case AR71XX_SOC_AR9130:
  49         case AR71XX_SOC_AR9132:
  50                 local_irq_save(flags);
  51                 t = ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE);
  52                 ar71xx_reset_wr(AR91XX_RESET_REG_RESET_MODULE, t | mask);
  53                 local_irq_restore(flags);
  54                 break;
  55
  56         default:
  57                 BUG();
  58         }
  59 }
  60 EXPORT_SYMBOL_GPL(ar71xx_device_stop);
  61
  62 void ar71xx_device_start(u32 mask)
  63 {
  64         unsigned long flags;
  65         u32 t;
  66
  67         switch (ar71xx_soc) {
  68         case AR71XX_SOC_AR7130:
  69         case AR71XX_SOC_AR7141:
  70         case AR71XX_SOC_AR7161:
  71                 local_irq_save(flags);
  72                 t = ar71xx_reset_rr(AR71XX_RESET_REG_RESET_MODULE);
  73                 ar71xx_reset_wr(AR71XX_RESET_REG_RESET_MODULE, t & ~mask);
  74                 local_irq_restore(flags);
  75                 break;
  76
  77         case AR71XX_SOC_AR9130:
  78         case AR71XX_SOC_AR9132:
  79                 local_irq_save(flags);
  80                 t = ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE);
  81                 ar71xx_reset_wr(AR91XX_RESET_REG_RESET_MODULE, t & ~mask);
  82                 local_irq_restore(flags);
  83                 break;
  84
  85         default:
  86                 BUG();
  87         }
  88 }
  89 EXPORT_SYMBOL_GPL(ar71xx_device_start);
  90
  91 void ar71xx_ddr_flush(u32 reg)
  92 {
  93         ar71xx_ddr_wr(reg, 1);
  94         while ((ar71xx_ddr_rr(reg) & 0x1));
  95
  96         ar71xx_ddr_wr(reg, 1);
  97         while ((ar71xx_ddr_rr(reg) & 0x1));
  98 }
  99 EXPORT_SYMBOL_GPL(ar71xx_ddr_flush);
 100