arch/arm/plat-s3c64xx/dma-fake.c

   1 /* linux/arch/arm/plat-s3c64xx/dma.c
   2  *
   3  * Copyright 2009 Simtec Electronics
   4  *      Ben Dooks <ben@simtec.co.uk>
   5  *
   6  * S3C64XX DMA core - fake
   7  *
   8  * http://armlinux.simtec.co.uk/
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13 */
  14
  15 #include <linux/module.h>
  16 #include <linux/init.h>
  17 #include <linux/sched.h>
  18 #include <linux/spinlock.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/sysdev.h>
  21 #include <linux/slab.h>
  22 #include <linux/errno.h>
  23 #include <linux/io.h>
  24
  25 #include <asm/system.h>
  26 #include <asm/irq.h>
  27 #include <mach/hardware.h>
  28 #include <mach/dma.h>
  29
  30
  31 int s3c2410_dma_ctrl(unsigned int channel, enum s3c2410_chan_op op)
  32 {
  33         return 0;
  34 }
  35
  36 EXPORT_SYMBOL(s3c2410_dma_ctrl);
  37
  38 int s3c2410_dma_enqueue(unsigned int channel, void *id,
  39                         dma_addr_t data, int size)
  40 {
  41         return 0;
  42 }
  43
  44 EXPORT_SYMBOL(s3c2410_dma_enqueue);
  45
  46 int s3c2410_dma_devconfig(int channel,
  47                           enum s3c2410_dmasrc source,
  48                           unsigned long devaddr)
  49 {
  50         return 0;
  51 }
  52
  53 EXPORT_SYMBOL(s3c2410_dma_devconfig);
  54
  55
  56 int s3c2410_dma_getposition(unsigned int channel, dma_addr_t *src, dma_addr_t *dst)
  57 {
  58         if (src != NULL)
  59                 *src = 0;
  60
  61         if (dst != NULL)
  62                 *dst = 0;
  63
  64         return 0;
  65 }
  66
  67 EXPORT_SYMBOL(s3c2410_dma_getposition);
  68
  69 int s3c2410_dma_config(unsigned int channel, int xferunit)
  70 {
  71         return 0;
  72 }
  73
  74 EXPORT_SYMBOL(s3c2410_dma_config);
  75
  76 int s3c2410_dma_free(unsigned int channel, struct s3c2410_dma_client *client)
  77 {
  78         return 0;
  79 }
  80
  81 EXPORT_SYMBOL(s3c2410_dma_free);
  82
  83 int s3c2410_dma_request(unsigned int channel,
  84                         struct s3c2410_dma_client *client,
  85                         void *dev)
  86 {
  87         return 0;
  88 }
  89
  90 EXPORT_SYMBOL(s3c2410_dma_request);
  91
  92 int s3c2410_dma_set_buffdone_fn(unsigned int channel, s3c2410_dma_cbfn_t rtn)
  93 {
  94         return 0;
  95 }
  96
  97 EXPORT_SYMBOL(s3c2410_dma_set_buffdone_fn);