arch/um/drivers/hostaudio_user.c

   1 /*
   2  * Copyright (C) 2002 Steve Schmidtke
   3  * Licensed under the GPL
   4  */
   5
   6 #include <sys/types.h>
   7 #include <unistd.h>
   8 #include <errno.h>
   9 #include "hostaudio.h"
  10 #include "user_util.h"
  11 #include "kern_util.h"
  12 #include "user.h"
  13 #include "os.h"
  14
  15 /* /dev/dsp file operations */
  16
  17 ssize_t hostaudio_read_user(struct hostaudio_state *state, char *buffer,
  18                             size_t count, loff_t *ppos)
  19 {
  20 #ifdef DEBUG
  21         printk("hostaudio: read_user called, count = %d\n", count);
  22 #endif
  23
  24         return(os_read_file(state->fd, buffer, count));
  25 }
  26
  27 ssize_t hostaudio_write_user(struct hostaudio_state *state, const char *buffer,
  28                              size_t count, loff_t *ppos)
  29 {
  30 #ifdef DEBUG
  31         printk("hostaudio: write_user called, count = %d\n", count);
  32 #endif
  33
  34         return(os_write_file(state->fd, buffer, count));
  35 }
  36
  37 int hostaudio_ioctl_user(struct hostaudio_state *state, unsigned int cmd,
  38                          unsigned long arg)
  39 {
  40 #ifdef DEBUG
  41         printk("hostaudio: ioctl_user called, cmd = %u\n", cmd);
  42 #endif
  43
  44         return(os_ioctl_generic(state->fd, cmd, arg));
  45 }
  46
  47 int hostaudio_open_user(struct hostaudio_state *state, int r, int w, char *dsp)
  48 {
  49 #ifdef DEBUG
  50         printk("hostaudio: open_user called\n");
  51 #endif
  52
  53         state->fd = os_open_file(dsp, of_set_rw(OPENFLAGS(), r, w), 0);
  54
  55         if(state->fd < 0) {
  56                 printk("hostaudio_open_user failed to open '%s', err = %d\n",
  57                        dsp, -state->fd);
  58                 return(state->fd);
  59         }
  60
  61         return(0);
  62 }
  63
  64 int hostaudio_release_user(struct hostaudio_state *state)
  65 {
  66 #ifdef DEBUG
  67         printk("hostaudio: release called\n");
  68 #endif
  69         if(state->fd >= 0){
  70                 os_close_file(state->fd);
  71                 state->fd = -1;
  72         }
  73
  74         return(0);
  75 }
  76
  77 /* /dev/mixer file operations */
  78
  79 int hostmixer_ioctl_mixdev_user(struct hostmixer_state *state,
  80                                 unsigned int cmd, unsigned long arg)
  81 {
  82 #ifdef DEBUG
  83         printk("hostmixer: ioctl_user called cmd = %u\n",cmd);
  84 #endif
  85
  86         return(os_ioctl_generic(state->fd, cmd, arg));
  87 }
  88
  89 int hostmixer_open_mixdev_user(struct hostmixer_state *state, int r, int w,
  90                                char *mixer)
  91 {
  92 #ifdef DEBUG
  93         printk("hostmixer: open_user called\n");
  94 #endif
  95
  96         state->fd = os_open_file(mixer, of_set_rw(OPENFLAGS(), r, w), 0);
  97
  98         if(state->fd < 0) {
  99                 printk("hostaudio_open_mixdev_user failed to open '%s', "
 100                        "err = %d\n", mixer, state->fd);
 101                 return(state->fd);
 102         }
 103
 104         return(0);
 105 }
 106
 107 int hostmixer_release_mixdev_user(struct hostmixer_state *state)
 108 {
 109 #ifdef DEBUG
 110         printk("hostmixer: release_user called\n");
 111 #endif
 112
 113         if(state->fd >= 0){
 114                 os_close_file(state->fd);
 115                 state->fd = -1;
 116         }
 117
 118         return 0;
 119 }
 120
 121 /*
 122  * Overrides for Emacs so that we follow Linus's tabbing style.
 123  * Emacs will notice this stuff at the end of the file and automatically
 124  * adjust the settings for this buffer only.  This must remain at the end
 125  * of the file.
 126  * ---------------------------------------------------------------------------
 127  * Local variables:
 128  * c-file-style: "linux"
 129  * End:
 130  */