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path: root/drivers/media/video/tvmixer.c
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Diffstat (limited to 'drivers/media/video/tvmixer.c')
-rw-r--r--drivers/media/video/tvmixer.c336
1 files changed, 0 insertions, 336 deletions
diff --git a/drivers/media/video/tvmixer.c b/drivers/media/video/tvmixer.c
deleted file mode 100644
index 9fa5b702e073..000000000000
--- a/drivers/media/video/tvmixer.c
+++ /dev/null
@@ -1,336 +0,0 @@
-/*
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/slab.h>
-#include <linux/i2c.h>
-#include <linux/videodev.h>
-#include <linux/init.h>
-#include <linux/kdev_t.h>
-#include <linux/sound.h>
-#include <linux/soundcard.h>
-
-#include <asm/semaphore.h>
-#include <asm/uaccess.h>
-
-
-#define DEV_MAX 4
-
-static int devnr = -1;
-module_param(devnr, int, 0644);
-
-MODULE_AUTHOR("Gerd Knorr");
-MODULE_LICENSE("GPL");
-
-/* ----------------------------------------------------------------------- */
-
-struct TVMIXER {
- struct i2c_client *dev;
- int minor;
- int count;
-};
-
-static struct TVMIXER devices[DEV_MAX];
-
-static int tvmixer_adapters(struct i2c_adapter *adap);
-static int tvmixer_clients(struct i2c_client *client);
-
-/* ----------------------------------------------------------------------- */
-
-static int mix_to_v4l(int i)
-{
- int r;
-
- r = ((i & 0xff) * 65536 + 50) / 100;
- if (r > 65535) r = 65535;
- if (r < 0) r = 0;
- return r;
-}
-
-static int v4l_to_mix(int i)
-{
- int r;
-
- r = (i * 100 + 32768) / 65536;
- if (r > 100) r = 100;
- if (r < 0) r = 0;
- return r | (r << 8);
-}
-
-static int v4l_to_mix2(int l, int r)
-{
- r = (r * 100 + 32768) / 65536;
- if (r > 100) r = 100;
- if (r < 0) r = 0;
- l = (l * 100 + 32768) / 65536;
- if (l > 100) l = 100;
- if (l < 0) l = 0;
- return (r << 8) | l;
-}
-
-static int tvmixer_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
-{
- struct video_audio va;
- int left,right,ret,val = 0;
- struct TVMIXER *mix = file->private_data;
- struct i2c_client *client = mix->dev;
- void __user *argp = (void __user *)arg;
- int __user *p = argp;
-
- if (NULL == client)
- return -ENODEV;
-
- if (cmd == SOUND_MIXER_INFO) {
- mixer_info info;
- strlcpy(info.id, "tv card", sizeof(info.id));
- strlcpy(info.name, client->name, sizeof(info.name));
- info.modify_counter = 42 /* FIXME */;
- if (copy_to_user(argp, &info, sizeof(info)))
- return -EFAULT;
- return 0;
- }
- if (cmd == SOUND_OLD_MIXER_INFO) {
- _old_mixer_info info;
- strlcpy(info.id, "tv card", sizeof(info.id));
- strlcpy(info.name, client->name, sizeof(info.name));
- if (copy_to_user(argp, &info, sizeof(info)))
- return -EFAULT;
- return 0;
- }
- if (cmd == OSS_GETVERSION)
- return put_user(SOUND_VERSION, p);
-
- if (_SIOC_DIR(cmd) & _SIOC_WRITE)
- if (get_user(val, p))
- return -EFAULT;
-
- /* read state */
- memset(&va,0,sizeof(va));
- client->driver->command(client,VIDIOCGAUDIO,&va);
-
- switch (cmd) {
- case MIXER_READ(SOUND_MIXER_RECMASK):
- case MIXER_READ(SOUND_MIXER_CAPS):
- case MIXER_READ(SOUND_MIXER_RECSRC):
- case MIXER_WRITE(SOUND_MIXER_RECSRC):
- ret = 0;
- break;
-
- case MIXER_READ(SOUND_MIXER_STEREODEVS):
- ret = SOUND_MASK_VOLUME;
- break;
- case MIXER_READ(SOUND_MIXER_DEVMASK):
- ret = SOUND_MASK_VOLUME;
- if (va.flags & VIDEO_AUDIO_BASS)
- ret |= SOUND_MASK_BASS;
- if (va.flags & VIDEO_AUDIO_TREBLE)
- ret |= SOUND_MASK_TREBLE;
- break;
-
- case MIXER_WRITE(SOUND_MIXER_VOLUME):
- left = mix_to_v4l(val);
- right = mix_to_v4l(val >> 8);
- va.volume = max(left,right);
- va.balance = (32768*min(left,right)) / (va.volume ? va.volume : 1);
- va.balance = (left<right) ? (65535-va.balance) : va.balance;
- if (va.volume)
- va.flags &= ~VIDEO_AUDIO_MUTE;
- client->driver->command(client,VIDIOCSAUDIO,&va);
- client->driver->command(client,VIDIOCGAUDIO,&va);
- /* fall throuth */
- case MIXER_READ(SOUND_MIXER_VOLUME):
- left = (min(65536 - va.balance,32768) *
- va.volume) / 32768;
- right = (min(va.balance,(u16)32768) *
- va.volume) / 32768;
- ret = v4l_to_mix2(left,right);
- break;
-
- case MIXER_WRITE(SOUND_MIXER_BASS):
- va.bass = mix_to_v4l(val);
- client->driver->command(client,VIDIOCSAUDIO,&va);
- client->driver->command(client,VIDIOCGAUDIO,&va);
- /* fall throuth */
- case MIXER_READ(SOUND_MIXER_BASS):
- ret = v4l_to_mix(va.bass);
- break;
-
- case MIXER_WRITE(SOUND_MIXER_TREBLE):
- va.treble = mix_to_v4l(val);
- client->driver->command(client,VIDIOCSAUDIO,&va);
- client->driver->command(client,VIDIOCGAUDIO,&va);
- /* fall throuth */
- case MIXER_READ(SOUND_MIXER_TREBLE):
- ret = v4l_to_mix(va.treble);
- break;
-
- default:
- return -EINVAL;
- }
- if (put_user(ret, p))
- return -EFAULT;
- return 0;
-}
-
-static int tvmixer_open(struct inode *inode, struct file *file)
-{
- int i, minor = iminor(inode);
- struct TVMIXER *mix = NULL;
- struct i2c_client *client = NULL;
-
- for (i = 0; i < DEV_MAX; i++) {
- if (devices[i].minor == minor) {
- mix = devices+i;
- client = mix->dev;
- break;
- }
- }
-
- if (NULL == client)
- return -ENODEV;
-
- /* lock bttv in memory while the mixer is in use */
- file->private_data = mix;
- if (client->adapter->owner)
- try_module_get(client->adapter->owner);
- return 0;
-}
-
-static int tvmixer_release(struct inode *inode, struct file *file)
-{
- struct TVMIXER *mix = file->private_data;
- struct i2c_client *client;
-
- client = mix->dev;
- if (NULL == client) {
- return -ENODEV;
- }
-
- module_put(client->adapter->owner);
- return 0;
-}
-
-static struct i2c_driver driver = {
- .driver = {
- .name = "tvmixer",
- },
- .id = I2C_DRIVERID_TVMIXER,
- .detach_adapter = tvmixer_adapters,
- .attach_adapter = tvmixer_adapters,
- .detach_client = tvmixer_clients,
-};
-
-static const struct file_operations tvmixer_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .ioctl = tvmixer_ioctl,
- .open = tvmixer_open,
- .release = tvmixer_release,
-};
-
-/* ----------------------------------------------------------------------- */
-
-static int tvmixer_adapters(struct i2c_adapter *adap)
-{
- struct i2c_client *client;
-
- list_for_each_entry(client, &adap->clients, list)
- tvmixer_clients(client);
- return 0;
-}
-
-static int tvmixer_clients(struct i2c_client *client)
-{
- struct video_audio va;
- int i,minor;
-
- if (!(client->adapter->class & I2C_CLASS_TV_ANALOG))
- return -1;
-
- /* unregister ?? */
- for (i = 0; i < DEV_MAX; i++) {
- if (devices[i].dev == client) {
- /* unregister */
- unregister_sound_mixer(devices[i].minor);
- devices[i].dev = NULL;
- devices[i].minor = -1;
- printk("tvmixer: %s unregistered (#1)\n",
- client->name);
- return 0;
- }
- }
-
- /* look for a free slot */
- for (i = 0; i < DEV_MAX; i++)
- if (NULL == devices[i].dev)
- break;
- if (i == DEV_MAX) {
- printk(KERN_WARNING "tvmixer: DEV_MAX too small\n");
- return -1;
- }
-
- /* audio chip with mixer ??? */
- if (NULL == client->driver->command)
- return -1;
- memset(&va,0,sizeof(va));
- if (0 != client->driver->command(client,VIDIOCGAUDIO,&va))
- return -1;
- if (0 == (va.flags & VIDEO_AUDIO_VOLUME))
- return -1;
-
- /* everything is fine, register */
- if ((minor = register_sound_mixer(&tvmixer_fops,devnr)) < 0) {
- printk(KERN_ERR "tvmixer: cannot allocate mixer device\n");
- return -1;
- }
-
- devices[i].minor = minor;
- devices[i].count = 0;
- devices[i].dev = client;
- printk("tvmixer: %s (%s) registered with minor %d\n",
- client->name,client->adapter->name,minor);
-
- return 0;
-}
-
-/* ----------------------------------------------------------------------- */
-
-static int __init tvmixer_init_module(void)
-{
- int i;
-
- for (i = 0; i < DEV_MAX; i++)
- devices[i].minor = -1;
-
- return i2c_add_driver(&driver);
-}
-
-static void __exit tvmixer_cleanup_module(void)
-{
- int i;
-
- i2c_del_driver(&driver);
- for (i = 0; i < DEV_MAX; i++) {
- if (devices[i].minor != -1) {
- unregister_sound_mixer(devices[i].minor);
- printk("tvmixer: %s unregistered (#2)\n",
- devices[i].dev->name);
- }
- }
-}
-
-module_init(tvmixer_init_module);
-module_exit(tvmixer_cleanup_module);
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-basic-offset: 8
- * End:
- */
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-12 10:05:17 +0000