drivers/pcmcia/pxa2xx_generic.c

   1 /*======================================================================
   2
   3     Device driver for the PCMCIA control functionality of Intel PXA2xx
   4     microprocessors.
   5
   6     The contents of this file may be used under the
   7     terms of the GNU Public License version 2 (the "GPL")
   8
   9     (c) Ian Molton (spyro@f2s.com) 2003
  10     (c) Stefan Eletzhofer (stefan.eletzhofer@inquant.de) 2003,4
  11
  12     derived from sa1100_generic.c
  13
  14      Portions created by John G. Dorsey are
  15      Copyright (C) 1999 John G. Dorsey.
  16
  17 ======================================================================*/
  18
  19 #include <linux/module.h>
  20 #include <linux/init.h>
  21
  22 #include <pcmcia/version.h>
  23 #include <pcmcia/cs_types.h>
  24 #include <pcmcia/cs.h>
  25 #include <pcmcia/ss.h>
  26
  27 #include <asm/arch/pcmcia.h>
  28
  29 #include "pxa2xx.h"
  30 #include "pxa2xx_generic.h"
  31
  32 static int pxa2xx_generic_drv_pcmcia_suspend(struct device *dev, u32 state, u32 level)
  33 {
  34         int ret = 0;
  35         if (level == SUSPEND_SAVE_STATE)
  36                 ret = pcmcia_socket_dev_suspend(dev, state);
  37         return ret;
  38 }
  39
  40 static int pxa2xx_generic_drv_pcmcia_resume(struct device *dev, u32 level)
  41 {
  42         int ret = 0;
  43         if (level == RESUME_RESTORE_STATE)
  44                 ret = pcmcia_socket_dev_resume(dev);
  45         return ret;
  46 }
  47
  48 static struct device_driver pxa2xx_generic_pcmcia_driver = {
  49         .probe          = pxa2xx_core_drv_pcmcia_probe,
  50         .remove         = pxa2xx_core_drv_pcmcia_remove,
  51         .name           = "pxa2xx-pcmcia",
  52         .bus            = &platform_bus_type,
  53         .suspend        = pxa2xx_generic_drv_pcmcia_suspend,
  54         .resume         = pxa2xx_generic_drv_pcmcia_resume,
  55 };
  56
  57 /* pxa2xx_generic_pcmcia_init()
  58  * ^^^^^^^^^^^^^^^^^^^^
  59  *
  60  * This routine performs low-level PCMCIA initialization and then
  61  * registers this socket driver with Card Services.
  62  *
  63  * Returns: 0 on success, -ve error code on failure
  64  */
  65 static int __init pxa2xx_generic_pcmcia_init(void)
  66 {
  67         return driver_register(&pxa2xx_generic_pcmcia_driver);
  68 }
  69
  70 /* pxa2xx_generic_pcmcia_exit()
  71  * ^^^^^^^^^^^^^^^^^^^^
  72  * Invokes the low-level kernel service to free IRQs associated with this
  73  * socket controller and reset GPIO edge detection.
  74  */
  75 static void __exit pxa2xx_generic_pcmcia_exit(void)
  76 {
  77         driver_unregister(&pxa2xx_generic_pcmcia_driver);
  78 }
  79
  80 MODULE_AUTHOR("Stefan Eletzhofer <stefan.eletzhofer@inquant.de> and Ian Molton <spyro@f2s.com>");
  81 MODULE_DESCRIPTION("Linux PCMCIA Card Services: PXA2xx generic routines");
  82 MODULE_LICENSE("GPL");
  83
  84 module_init(pxa2xx_generic_pcmcia_init);
  85 module_exit(pxa2xx_generic_pcmcia_exit);