drivers/ssb/embedded.c

   1 /*
   2  * Sonics Silicon Backplane
   3  * Embedded systems support code
   4  *
   5  * Copyright 2005-2008, Broadcom Corporation
   6  * Copyright 2006-2008, Michael Buesch <mb@bu3sch.de>
   7  *
   8  * Licensed under the GNU/GPL. See COPYING for details.
   9  */
  10
  11 #include <linux/ssb/ssb.h>
  12 #include <linux/ssb/ssb_embedded.h>
  13
  14 #include "ssb_private.h"
  15
  16
  17 int ssb_watchdog_timer_set(struct ssb_bus *bus, u32 ticks)
  18 {
  19         if (ssb_chipco_available(&bus->chipco)) {
  20                 ssb_chipco_watchdog_timer_set(&bus->chipco, ticks);
  21                 return 0;
  22         }
  23         if (ssb_extif_available(&bus->extif)) {
  24                 ssb_extif_watchdog_timer_set(&bus->extif, ticks);
  25                 return 0;
  26         }
  27         return -ENODEV;
  28 }
  29
  30 u32 ssb_gpio_in(struct ssb_bus *bus, u32 mask)
  31 {
  32         unsigned long flags;
  33         u32 res = 0;
  34
  35         spin_lock_irqsave(&bus->gpio_lock, flags);
  36         if (ssb_chipco_available(&bus->chipco))
  37                 res = ssb_chipco_gpio_in(&bus->chipco, mask);
  38         else if (ssb_extif_available(&bus->extif))
  39                 res = ssb_extif_gpio_in(&bus->extif, mask);
  40         else
  41                 SSB_WARN_ON(1);
  42         spin_unlock_irqrestore(&bus->gpio_lock, flags);
  43
  44         return res;
  45 }
  46 EXPORT_SYMBOL(ssb_gpio_in);
  47
  48 u32 ssb_gpio_out(struct ssb_bus *bus, u32 mask, u32 value)
  49 {
  50         unsigned long flags;
  51         u32 res = 0;
  52
  53         spin_lock_irqsave(&bus->gpio_lock, flags);
  54         if (ssb_chipco_available(&bus->chipco))
  55                 res = ssb_chipco_gpio_out(&bus->chipco, mask, value);
  56         else if (ssb_extif_available(&bus->extif))
  57                 res = ssb_extif_gpio_out(&bus->extif, mask, value);
  58         else
  59                 SSB_WARN_ON(1);
  60         spin_unlock_irqrestore(&bus->gpio_lock, flags);
  61
  62         return res;
  63 }
  64 EXPORT_SYMBOL(ssb_gpio_out);
  65
  66 u32 ssb_gpio_outen(struct ssb_bus *bus, u32 mask, u32 value)
  67 {
  68         unsigned long flags;
  69         u32 res = 0;
  70
  71         spin_lock_irqsave(&bus->gpio_lock, flags);
  72         if (ssb_chipco_available(&bus->chipco))
  73                 res = ssb_chipco_gpio_outen(&bus->chipco, mask, value);
  74         else if (ssb_extif_available(&bus->extif))
  75                 res = ssb_extif_gpio_outen(&bus->extif, mask, value);
  76         else
  77                 SSB_WARN_ON(1);
  78         spin_unlock_irqrestore(&bus->gpio_lock, flags);
  79
  80         return res;
  81 }
  82 EXPORT_SYMBOL(ssb_gpio_outen);
  83
  84 u32 ssb_gpio_control(struct ssb_bus *bus, u32 mask, u32 value)
  85 {
  86         unsigned long flags;
  87         u32 res = 0;
  88
  89         spin_lock_irqsave(&bus->gpio_lock, flags);
  90         if (ssb_chipco_available(&bus->chipco))
  91                 res = ssb_chipco_gpio_control(&bus->chipco, mask, value);
  92         spin_unlock_irqrestore(&bus->gpio_lock, flags);
  93
  94         return res;
  95 }
  96 EXPORT_SYMBOL(ssb_gpio_control);
  97
  98 u32 ssb_gpio_intmask(struct ssb_bus *bus, u32 mask, u32 value)
  99 {
 100         unsigned long flags;
 101         u32 res = 0;
 102
 103         spin_lock_irqsave(&bus->gpio_lock, flags);
 104         if (ssb_chipco_available(&bus->chipco))
 105                 res = ssb_chipco_gpio_intmask(&bus->chipco, mask, value);
 106         else if (ssb_extif_available(&bus->extif))
 107                 res = ssb_extif_gpio_intmask(&bus->extif, mask, value);
 108         else
 109                 SSB_WARN_ON(1);
 110         spin_unlock_irqrestore(&bus->gpio_lock, flags);
 111
 112         return res;
 113 }
 114 EXPORT_SYMBOL(ssb_gpio_intmask);
 115
 116 u32 ssb_gpio_polarity(struct ssb_bus *bus, u32 mask, u32 value)
 117 {
 118         unsigned long flags;
 119         u32 res = 0;
 120
 121         spin_lock_irqsave(&bus->gpio_lock, flags);
 122         if (ssb_chipco_available(&bus->chipco))
 123                 res = ssb_chipco_gpio_polarity(&bus->chipco, mask, value);
 124         else if (ssb_extif_available(&bus->extif))
 125                 res = ssb_extif_gpio_polarity(&bus->extif, mask, value);
 126         else
 127                 SSB_WARN_ON(1);
 128         spin_unlock_irqrestore(&bus->gpio_lock, flags);
 129
 130         return res;
 131 }
 132 EXPORT_SYMBOL(ssb_gpio_polarity);