drivers/net/irda/ep7211-sir.c

   1 /*
   2  * IR port driver for the Cirrus Logic CLPS711X processors
   3  *
   4  * Copyright 2001, Blue Mug Inc.  All rights reserved.
   5  * Copyright 2007, Samuel Ortiz <samuel@sortiz.org>
   6  */
   7
   8 #include <linux/module.h>
   9 #include <linux/platform_device.h>
  10
  11 #include <mach/hardware.h>
  12
  13 #include "sir-dev.h"
  14
  15 static int clps711x_dongle_open(struct sir_dev *dev)
  16 {
  17         unsigned int syscon;
  18
  19         /* Turn on the SIR encoder. */
  20         syscon = clps_readl(SYSCON1);
  21         syscon |= SYSCON1_SIREN;
  22         clps_writel(syscon, SYSCON1);
  23
  24         return 0;
  25 }
  26
  27 static int clps711x_dongle_close(struct sir_dev *dev)
  28 {
  29         unsigned int syscon;
  30
  31         /* Turn off the SIR encoder. */
  32         syscon = clps_readl(SYSCON1);
  33         syscon &= ~SYSCON1_SIREN;
  34         clps_writel(syscon, SYSCON1);
  35
  36         return 0;
  37 }
  38
  39 static struct dongle_driver clps711x_dongle = {
  40         .owner          = THIS_MODULE,
  41         .driver_name    = "EP7211 IR driver",
  42         .type           = IRDA_EP7211_DONGLE,
  43         .open           = clps711x_dongle_open,
  44         .close          = clps711x_dongle_close,
  45 };
  46
  47 static int clps711x_sir_probe(struct platform_device *pdev)
  48 {
  49         return irda_register_dongle(&clps711x_dongle);
  50 }
  51
  52 static int clps711x_sir_remove(struct platform_device *pdev)
  53 {
  54         return irda_unregister_dongle(&clps711x_dongle);
  55 }
  56
  57 static struct platform_driver clps711x_sir_driver = {
  58         .driver = {
  59                 .name   = "sir-clps711x",
  60                 .owner  = THIS_MODULE,
  61         },
  62         .probe  = clps711x_sir_probe,
  63         .remove = clps711x_sir_remove,
  64 };
  65 module_platform_driver(clps711x_sir_driver);
  66
  67 MODULE_AUTHOR("Samuel Ortiz <samuel@sortiz.org>");
  68 MODULE_DESCRIPTION("EP7211 IR dongle driver");
  69 MODULE_LICENSE("GPL");
  70 MODULE_ALIAS("irda-dongle-13"); /* IRDA_EP7211_DONGLE */