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Linux/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/slab.h>
 36 #include <linux/platform_device.h>
 37 
 38 #include <pcmcia/ss.h>
 39 
 40 #include <asm/hardware/scoop.h>
 41 
 42 #include "sa1100_generic.h"
 43 
 44 int __init pcmcia_collie_init(struct device *dev);
 45 
 46 static int (*sa11x0_pcmcia_hw_init[])(struct device *dev) = {
 47 #ifdef CONFIG_SA1100_ASSABET
 48         pcmcia_assabet_init,
 49 #endif
 50 #ifdef CONFIG_SA1100_CERF
 51         pcmcia_cerf_init,
 52 #endif
 53 #if defined(CONFIG_SA1100_H3100) || defined(CONFIG_SA1100_H3600)
 54         pcmcia_h3600_init,
 55 #endif
 56 #ifdef CONFIG_SA1100_NANOENGINE
 57         pcmcia_nanoengine_init,
 58 #endif
 59 #ifdef CONFIG_SA1100_SHANNON
 60         pcmcia_shannon_init,
 61 #endif
 62 #ifdef CONFIG_SA1100_SIMPAD
 63         pcmcia_simpad_init,
 64 #endif
 65 #ifdef CONFIG_SA1100_COLLIE
 66        pcmcia_collie_init,
 67 #endif
 68 };
 69 
 70 static int sa11x0_drv_pcmcia_probe(struct platform_device *dev)
 71 {
 72         int i, ret = -ENODEV;
 73 
 74         /*
 75          * Initialise any "on-board" PCMCIA sockets.
 76          */
 77         for (i = 0; i < ARRAY_SIZE(sa11x0_pcmcia_hw_init); i++) {
 78                 ret = sa11x0_pcmcia_hw_init[i](&dev->dev);
 79                 if (ret == 0)
 80                         break;
 81         }
 82 
 83         return ret;
 84 }
 85 
 86 static int sa11x0_drv_pcmcia_remove(struct platform_device *dev)
 87 {
 88         struct skt_dev_info *sinfo = platform_get_drvdata(dev);
 89         int i;
 90 
 91         platform_set_drvdata(dev, NULL);
 92 
 93         for (i = 0; i < sinfo->nskt; i++)
 94                 soc_pcmcia_remove_one(&sinfo->skt[i]);
 95 
 96         return 0;
 97 }
 98 
 99 static struct platform_driver sa11x0_pcmcia_driver = {
100         .driver = {
101                 .name           = "sa11x0-pcmcia",
102         },
103         .probe          = sa11x0_drv_pcmcia_probe,
104         .remove         = sa11x0_drv_pcmcia_remove,
105 };
106 
107 /* sa11x0_pcmcia_init()
108  * ^^^^^^^^^^^^^^^^^^^^
109  *
110  * This routine performs low-level PCMCIA initialization and then
111  * registers this socket driver with Card Services.
112  *
113  * Returns: 0 on success, -ve error code on failure
114  */
115 static int __init sa11x0_pcmcia_init(void)
116 {
117         return platform_driver_register(&sa11x0_pcmcia_driver);
118 }
119 
120 /* sa11x0_pcmcia_exit()
121  * ^^^^^^^^^^^^^^^^^^^^
122  * Invokes the low-level kernel service to free IRQs associated with this
123  * socket controller and reset GPIO edge detection.
124  */
125 static void __exit sa11x0_pcmcia_exit(void)
126 {
127         platform_driver_unregister(&sa11x0_pcmcia_driver);
128 }
129 
130 MODULE_AUTHOR("John Dorsey <john+@cs.cmu.edu>");
131 MODULE_DESCRIPTION("Linux PCMCIA Card Services: SA-11x0 Socket Controller");
132 MODULE_LICENSE("Dual MPL/GPL");
133 
134 fs_initcall(sa11x0_pcmcia_init);
135 module_exit(sa11x0_pcmcia_exit);
136 

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