drivers/pcmcia/sa1100_generic.c

   1 /*======================================================================
   2
   3     Device driver for the PCMCIA control functionality of StrongARM
   4     SA-1100 microprocessors.
   5
   6     The contents of this file are subject to the Mozilla Public
   7     License Version 1.1 (the "License"); you may not use this file
   8     except in compliance with the License. You may obtain a copy of
   9     the License at http://www.mozilla.org/MPL/
  10
  11     Software distributed under the License is distributed on an "AS
  12     IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  13     implied. See the License for the specific language governing
  14     rights and limitations under the License.
  15
  16     The initial developer of the original code is John G. Dorsey
  17     <john+@cs.cmu.edu>.  Portions created by John G. Dorsey are
  18     Copyright (C) 1999 John G. Dorsey.  All Rights Reserved.
  19
  20     Alternatively, the contents of this file may be used under the
  21     terms of the GNU Public License version 2 (the "GPL"), in which
  22     case the provisions of the GPL are applicable instead of the
  23     above.  If you wish to allow the use of your version of this file
  24     only under the terms of the GPL and not to allow others to use
  25     your version of this file under the MPL, indicate your decision
  26     by deleting the provisions above and replace them with the notice
  27     and other provisions required by the GPL.  If you do not delete
  28     the provisions above, a recipient may use your version of this
  29     file under either the MPL or the GPL.
  30
  31 ======================================================================*/
  32
  33 #include <linux/module.h>
  34 #include <linux/init.h>
  35 #include <linux/config.h>
  36
  37 #include <pcmcia/cs_types.h>
  38 #include <pcmcia/cs.h>
  39 #include <pcmcia/ss.h>
  40
  41 #include "sa1100_generic.h"
  42
  43 static int (*sa11x0_pcmcia_hw_init[])(struct device *dev) = {
  44 #ifdef CONFIG_SA1100_ASSABET
  45         pcmcia_assabet_init,
  46 #endif
  47 #ifdef CONFIG_SA1100_CERF
  48         pcmcia_cerf_init,
  49 #endif
  50 #ifdef CONFIG_SA1100_H3600
  51         pcmcia_h3600_init,
  52 #endif
  53 #ifdef CONFIG_SA1100_SHANNON
  54         pcmcia_shannon_init,
  55 #endif
  56 #ifdef CONFIG_SA1100_SIMPAD
  57         pcmcia_simpad_init,
  58 #endif
  59 };
  60
  61 static int sa11x0_drv_pcmcia_probe(struct device *dev)
  62 {
  63         int i, ret = -ENODEV;
  64
  65         /*
  66          * Initialise any "on-board" PCMCIA sockets.
  67          */
  68         for (i = 0; i < ARRAY_SIZE(sa11x0_pcmcia_hw_init); i++) {
  69                 ret = sa11x0_pcmcia_hw_init[i](dev);
  70                 if (ret == 0)
  71                         break;
  72         }
  73
  74         return ret;
  75 }
  76
  77 static int sa11x0_drv_pcmcia_suspend(struct device *dev, pm_message_t state, u32 level)
  78 {
  79         int ret = 0;
  80         if (level == SUSPEND_SAVE_STATE)
  81                 ret = pcmcia_socket_dev_suspend(dev, state);
  82         return ret;
  83 }
  84
  85 static int sa11x0_drv_pcmcia_resume(struct device *dev, u32 level)
  86 {
  87         int ret = 0;
  88         if (level == RESUME_RESTORE_STATE)
  89                 ret = pcmcia_socket_dev_resume(dev);
  90         return ret;
  91 }
  92
  93 static struct device_driver sa11x0_pcmcia_driver = {
  94         .probe          = sa11x0_drv_pcmcia_probe,
  95         .remove         = soc_common_drv_pcmcia_remove,
  96         .name           = "sa11x0-pcmcia",
  97         .bus            = &platform_bus_type,
  98         .suspend        = sa11x0_drv_pcmcia_suspend,
  99         .resume         = sa11x0_drv_pcmcia_resume,
 100 };
 101
 102 /* sa11x0_pcmcia_init()
 103  * ^^^^^^^^^^^^^^^^^^^^
 104  *
 105  * This routine performs low-level PCMCIA initialization and then
 106  * registers this socket driver with Card Services.
 107  *
 108  * Returns: 0 on success, -ve error code on failure
 109  */
 110 static int __init sa11x0_pcmcia_init(void)
 111 {
 112         return driver_register(&sa11x0_pcmcia_driver);
 113 }
 114
 115 /* sa11x0_pcmcia_exit()
 116  * ^^^^^^^^^^^^^^^^^^^^
 117  * Invokes the low-level kernel service to free IRQs associated with this
 118  * socket controller and reset GPIO edge detection.
 119  */
 120 static void __exit sa11x0_pcmcia_exit(void)
 121 {
 122         driver_unregister(&sa11x0_pcmcia_driver);
 123 }
 124
 125 MODULE_AUTHOR("John Dorsey <john+@cs.cmu.edu>");
 126 MODULE_DESCRIPTION("Linux PCMCIA Card Services: SA-11x0 Socket Controller");
 127 MODULE_LICENSE("Dual MPL/GPL");
 128
 129 fs_initcall(sa11x0_pcmcia_init);
 130 module_exit(sa11x0_pcmcia_exit);