arch/arm/mach-pxa/pxa2xx.c

   1 /*
   2  * linux/arch/arm/mach-pxa/pxa2xx.c
   3  *
   4  * code specific to pxa2xx
   5  *
   6  * Copyright (C) 2008 Dmitry Baryshkov
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/module.h>
  14 #include <linux/kernel.h>
  15 #include <linux/device.h>
  16
  17 #include <mach/hardware.h>
  18 #include <mach/pxa2xx-regs.h>
  19 #include <mach/mfp-pxa25x.h>
  20 #include <mach/reset.h>
  21 #include <mach/irda.h>
  22
  23 void pxa2xx_clear_reset_status(unsigned int mask)
  24 {
  25         /* RESET_STATUS_* has a 1:1 mapping with RCSR */
  26         RCSR = mask;
  27 }
  28
  29 static unsigned long pxa2xx_mfp_fir[] = {
  30         GPIO46_FICP_RXD,
  31         GPIO47_FICP_TXD,
  32 };
  33
  34 static unsigned long pxa2xx_mfp_sir[] = {
  35         GPIO46_STUART_RXD,
  36         GPIO47_STUART_TXD,
  37 };
  38
  39 static unsigned long pxa2xx_mfp_off[] = {
  40         GPIO46_GPIO | MFP_LPM_DRIVE_LOW,
  41         GPIO47_GPIO | MFP_LPM_DRIVE_LOW,
  42 };
  43
  44 void pxa2xx_transceiver_mode(struct device *dev, int mode)
  45 {
  46         if (mode & IR_OFF) {
  47                 pxa2xx_mfp_config(pxa2xx_mfp_off, ARRAY_SIZE(pxa2xx_mfp_off));
  48         } else if (mode & IR_SIRMODE) {
  49                 pxa2xx_mfp_config(pxa2xx_mfp_sir, ARRAY_SIZE(pxa2xx_mfp_sir));
  50         } else if (mode & IR_FIRMODE) {
  51                 pxa2xx_mfp_config(pxa2xx_mfp_fir, ARRAY_SIZE(pxa2xx_mfp_fir));
  52         } else
  53                 BUG();
  54 }
  55 EXPORT_SYMBOL_GPL(pxa2xx_transceiver_mode);