aboutsummaryrefslogtreecommitdiffstats
path: root/package/fonera-mp3-drv/src/mp3_drv.c
diff options
context:
space:
mode:
Diffstat (limited to 'package/fonera-mp3-drv/src/mp3_drv.c')
-rw-r--r--package/fonera-mp3-drv/src/mp3_drv.c325
1 files changed, 0 insertions, 325 deletions
diff --git a/package/fonera-mp3-drv/src/mp3_drv.c b/package/fonera-mp3-drv/src/mp3_drv.c
deleted file mode 100644
index 82863ac411..0000000000
--- a/package/fonera-mp3-drv/src/mp3_drv.c
+++ /dev/null
@@ -1,325 +0,0 @@
-/*
-* a.lp_mp3 - VS1011B driver for Fonera
-* Copyright (c) 2007 phrozen.org - John Crispin <john@phrozen.org>
-*
-* This program is free software; you can redistribute it and/or modify
-* it under the terms of the GNU General Public License as published by
-* the Free Software Foundation; either version 2 of the License, or
-* (at your option) any later version.
-*
-* This program is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-* GNU General Public License for more details.
-*
-* You should have received a copy of the GNU General Public License
-* along with this program; if not, write to the Free Software
-* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA02111-1307USA
-*
-* Feedback, Bugs... john@phrozen.org
-*
-*/
-
-
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/init.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-#include <linux/timer.h>
-#include <linux/init.h>
-#include <linux/genhd.h>
-#include <linux/device.h>
-#include <asm-mips/mach-atheros/reset.h>
-
-// do we want debuging info ?
-#if 0
-#define DBG(x) x
-#else
-#define DBG(x)
-#endif
-
-#define MP3_CHUNK_SIZE 4096
-#define MP3_BUFFERING 0
-#define MP3_PLAYING 1
-#define MP3_BUFFER_FINISHED 2
-#define MP3_PLAY_FINISHED 3
-typedef struct _MP3_DATA{
- unsigned char mp3[MP3_CHUNK_SIZE];
- unsigned char state;
-} MP3_DATA;
-
-#define IOCTL_MP3_INIT 0x01
-#define IOCTL_MP3_RESET 0x02
-#define IOCTL_MP3_SETVOLUME 0x03
-#define IOCTL_MP3_GETVOLUME 0x04
-
-typedef struct _AUDIO_DATA{
- unsigned int bitrate;
- unsigned int sample_rate;
- unsigned char is_stereo;
-}AUDIO_DATA;
-#define IOCTL_MP3_GETAUDIODATA 0x05
-#define IOCTL_MP3_CLEARBUFFER 0x06
-#define IOCTL_MP3_PLAY 0x07
-
-typedef struct _MP3_BEEP{
- unsigned char freq;
- unsigned int ms;
-} MP3_BEEP;
-#define IOCTL_MP3_BEEP 0x08
-#define IOCTL_MP3_END_REACHED 0x09
-#define IOCTL_MP3_BASS 0x10
-
-#define CRYSTAL12288 0x9800
-#define CRYSTAL24576 0x0
-
-#define DEV_NAME "mp3"
-#define DEV_MAJOR 196
-#define MAX_MP3_COUNT 1
-
-typedef struct _mp3_inf{
- unsigned char is_open;
-} mp3_inf;
-static mp3_inf mp3_info[MAX_MP3_COUNT];
-
-#define MP3_BUFFER_SIZE (128 * 1024)
-unsigned char mp3_buffer[MP3_BUFFER_SIZE];
-
-static unsigned long int mp3_buffer_offset_write = 0;
-static unsigned long int mp3_buffer_offset_read = 0;
-static unsigned char mp3_buffering_status = MP3_BUFFERING;
-static unsigned long int mp3_data_in_buffer = 0;
-static int mp3_thread = 0;
-unsigned int crystal_freq;
-
-#include "vs10xx.c"
-
-static wait_queue_head_t wq;
-static DECLARE_COMPLETION(mp3_exit);
-
-static int mp3_playback_thread(void *data){
- int j;
- unsigned long timeout;
- unsigned char empty = 0;
- printk("started kthread\n");
- daemonize("kmp3");
- while(mp3_buffering_status != MP3_PLAY_FINISHED){
- if((mp3_buffering_status == MP3_PLAYING) || (mp3_buffering_status == MP3_BUFFER_FINISHED)){
- while((VS1011_NEEDS_DATA) && (!empty)){
- if(mp3_buffer_offset_read == MP3_BUFFER_SIZE){
- mp3_buffer_offset_read = 0;
- }
-
- if(mp3_data_in_buffer == 0){
- if(mp3_buffering_status == MP3_BUFFER_FINISHED){
- printk("mp3_drv.ko : finished playing\n");
- mp3_buffering_status = MP3_PLAY_FINISHED;
- } else {
- empty = 1;
- printk("mp3_drv.ko : buffer empty ?\n");
- if(mp3_buffering_status != MP3_PLAY_FINISHED){
- }
- }
- } else {
- for(j = 0; j < 32; j++){
- VS1011_send_SDI(mp3_buffer[mp3_buffer_offset_read + j]);
- }
- mp3_buffer_offset_read += 32;
- mp3_data_in_buffer -= 32;
- }
- }
- }
- empty = 0;
- timeout = 1;
- timeout = wait_event_interruptible_timeout(wq, (timeout==0), timeout);
- }
- complete_and_exit(&mp3_exit, 0);
-}
-
-static ssize_t module_write(struct file * file, const char * buffer, size_t count, loff_t *offset){
- MP3_DATA mp3_data;
-
- copy_from_user((char*) &mp3_data, buffer, sizeof(MP3_DATA));
-
- if(mp3_data.state == MP3_BUFFER_FINISHED){
- mp3_buffering_status = MP3_BUFFER_FINISHED;
- DBG(printk("mp3_drv.ko : file end reached\n"));
- return 1;
- }
-
- if(mp3_data.state == MP3_PLAY_FINISHED){
- mp3_buffering_status = MP3_PLAY_FINISHED;
- mp3_data_in_buffer = 0;
- DBG(printk("mp3_drv.ko : stop playing\n"));
- return 1;
- }
-
- if(mp3_data_in_buffer + MP3_CHUNK_SIZE >= MP3_BUFFER_SIZE){
- DBG(printk("mp3_drv.ko : buffer is full? %ld\n", mp3_data_in_buffer);)
- return 0;
- }
-
- if(mp3_buffer_offset_write == MP3_BUFFER_SIZE){
- mp3_buffer_offset_write = 0;
- }
-
- memcpy(&mp3_buffer[mp3_buffer_offset_write], mp3_data.mp3, MP3_CHUNK_SIZE);
- mp3_buffer_offset_write += MP3_CHUNK_SIZE;
- mp3_buffering_status = mp3_data.state;
- mp3_data_in_buffer += MP3_CHUNK_SIZE;
- return 1;
-}
-
-static int module_ioctl(struct inode * inode, struct file * file, unsigned int cmd, unsigned long arg){
- unsigned int retval = 0;
- AUDIO_DATA audio_data;
- MP3_BEEP mp3_beep;
- DBG(printk("mp3_drv.ko : Ioctl Called (cmd=%d)\n", cmd );)
- switch (cmd) {
- case IOCTL_MP3_INIT:
- crystal_freq = arg;
- VS1011_init(crystal_freq, 1);
- VS1011_print_registers();
- break;
-
- case IOCTL_MP3_RESET:
- DBG(printk("mp3_drv.ko : doing a sw reset\n");)
- VS1011_init(crystal_freq, 0);
- VS1011_print_registers();
- VS1011_send_zeros(0x20);
- break;
-
- case IOCTL_MP3_SETVOLUME:
- DBG(printk("mp3_drv.ko : setting volume to : %lu\n", arg&0xffff);)
- VS1011_set_volume(arg);
- break;
-
- case IOCTL_MP3_GETVOLUME:
- retval = VS1011_get_volume();
- DBG(printk("mp3_drv.ko : read volume : %d\n", retval);)
- break;
-
- case IOCTL_MP3_GETAUDIODATA:
- DBG(printk("mp3_drv.ko : read audio data\n");)
- VS1011_get_audio_data(&audio_data);
- copy_to_user((char*)arg, (char*)&audio_data, sizeof(AUDIO_DATA));
- break;
-
- case IOCTL_MP3_CLEARBUFFER:
- DBG(printk("mp3_drv.ko : clearing buffer\n");)
- mp3_buffer_offset_read = 0;
- mp3_buffer_offset_write = 0;
- mp3_buffering_status = MP3_PLAY_FINISHED;
- mp3_data_in_buffer = 0;
- break;
-
- case IOCTL_MP3_PLAY:
- mp3_thread = kernel_thread(mp3_playback_thread, NULL, CLONE_KERNEL);
- break;
-
- case IOCTL_MP3_BEEP:
- copy_from_user((char*)&mp3_beep, (char*)arg, sizeof(MP3_BEEP));
- VS1011_sine(1,mp3_beep.freq);
- msDelay(mp3_beep.ms);
- VS1011_sine(0,0);
- break;
-
- case IOCTL_MP3_END_REACHED:
- if(mp3_buffering_status == MP3_PLAY_FINISHED){
- retval = 1;
- }
- break;
-
- case IOCTL_MP3_BASS:
- VS1011_set_bass(arg);
- break;
-
- default:
- printk("mp3_drv.ko : unknown ioctl\n");
- break;
-
- }
- return retval;
-}
-
-static int module_open(struct inode *inode, struct file *file){
- unsigned int dev_minor = MINOR(inode->i_rdev);
- if(dev_minor != 0){
- printk("mp3_drv.ko : trying to access unknown minor device -> %d\n", dev_minor);
- return -ENODEV;
- }
- if(mp3_info[dev_minor].is_open) {
- printk("mp3_drv.ko : Device with minor ID %d already in use\n", dev_minor);
- return -EBUSY;
- }
- mp3_info[dev_minor].is_open = 1;
-
- mp3_buffering_status = MP3_PLAY_FINISHED;
- printk("mp3_drv.ko : Minor %d has been opened\n", dev_minor);
- return 0;
-}
-
-static int module_close(struct inode * inode, struct file * file){
- unsigned int dev_minor = MINOR(inode->i_rdev);
- mp3_info[dev_minor].is_open = 0;
- printk("mp3_drv.ko : Minor %d has been closed\n", dev_minor);
- mp3_buffering_status = MP3_PLAY_FINISHED;
- return 0;
-}
-
-struct file_operations modulemp3_fops = {
- write: module_write,
- ioctl: module_ioctl,
- open: module_open,
- release: module_close
-};
-
-static struct class *mp3_class;
-
-static int __init mod_init(void){
- printk("mp3_drv.ko : VS1011b Driver\n");
- printk("mp3_drv.ko : Made by John '2B|!2B' Crispin (john@phrozen.org)\n");
- printk("mp3_drv.ko : Starting ...\n");
-
- printk("disabling atheros reset button irq\n");
-
- ar531x_disable_reset_button();
-
- if(register_chrdev(DEV_MAJOR, DEV_NAME, &modulemp3_fops)) {
- printk( "mp3_drv.ko : Error whilst opening %s (%d)\n", DEV_NAME, DEV_MAJOR);
- return( -ENODEV );
- }
-
- printk("mp3_drv.ko : using sysfs to create device nodes\n");
- mp3_class = class_create(THIS_MODULE, DEV_NAME);
- class_device_create(mp3_class, NULL,
- MKDEV(DEV_MAJOR, 0),
- NULL, DEV_NAME);
-
- mp3_info[0].is_open = 0;
- printk("mp3_drv.ko : Device %s registered for major ID %d\n", DEV_NAME, DEV_MAJOR);
- crystal_freq = CRYSTAL12288;
- VS1011_init(crystal_freq, 1);
- VS1011_print_registers();
- printk("end of init\n");
- init_waitqueue_head(&wq);
- printk("wait queue started\n");
- return 0;
-}
-
-static void __exit mod_exit(void){
- printk( "mp3_drv.ko : Cleanup\n" );
- unregister_chrdev(DEV_MAJOR, DEV_NAME);
-}
-
-module_init (mod_init);
-module_exit (mod_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("K. John '2B|!2B' Crispin");
-MODULE_DESCRIPTION("vs1011 Driver for Fox Board");
-
-
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 06:58:05 +0000