URL https://opencores.org/ocsvn/test_project/test_project/trunk

Subversion Repositories test_project

[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [media/] [radio/] [radio-aimslab.c] - Blame information for rev 62

Details | Compare with Previous | View Log


/* radiotrack (radioreveal) driver for Linux radio support
 * (c) 1997 M. Kirkwood
 * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
 * Converted to new API by Alan Cox <Alan.Cox@linux.org>
 * Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org>
 *
 * History:
 * 1999-02-24   Russell Kroll <rkroll@exploits.org>
 *              Fine tuning/VIDEO_TUNER_LOW
 *              Frequency range expanded to start at 87 MHz
 *
 * TODO: Allow for more than one of these foolish entities :-)
 *
 * Notes on the hardware (reverse engineered from other peoples'
 * reverse engineering of AIMS' code :-)
 *
 *  Frequency control is done digitally -- ie out(port,encodefreq(95.8));
 *
 *  The signal strength query is unsurprisingly inaccurate.  And it seems
 *  to indicate that (on my card, at least) the frequency setting isn't
 *  too great.  (I have to tune up .025MHz from what the freq should be
 *  to get a report that the thing is tuned.)
 *
 *  Volume control is (ugh) analogue:
 *   out(port, start_increasing_volume);
 *   wait(a_wee_while);
 *   out(port, stop_changing_the_volume);
 *
 */
 
#include <linux/module.h>       /* Modules                      */
#include <linux/init.h>         /* Initdata                     */
#include <linux/ioport.h>       /* request_region               */
#include <linux/delay.h>        /* udelay                       */
#include <asm/io.h>             /* outb, outb_p                 */
#include <asm/uaccess.h>        /* copy to/from user            */
#include <linux/videodev2.h>    /* kernel radio structs         */
#include <media/v4l2-common.h>
#include <asm/semaphore.h>      /* Lock for the I/O             */
 
#include <linux/version.h>      /* for KERNEL_VERSION MACRO     */
#define RADIO_VERSION KERNEL_VERSION(0,0,2)
 
#ifndef CONFIG_RADIO_RTRACK_PORT
#define CONFIG_RADIO_RTRACK_PORT -1
#endif
 
static int io = CONFIG_RADIO_RTRACK_PORT;
static int radio_nr = -1;
static struct mutex lock;
 
struct rt_device
{
        int port;
        int curvol;
        unsigned long curfreq;
        int muted;
};
 
 
/* local things */
 
static void sleep_delay(long n)
{
        /* Sleep nicely for 'n' uS */
        int d=n/msecs_to_jiffies(1000);
        if(!d)
                udelay(n);
        else
                msleep(jiffies_to_msecs(d));
}
 
static void rt_decvol(void)
{
        outb(0x58, io);         /* volume down + sigstr + on    */
        sleep_delay(100000);
        outb(0xd8, io);         /* volume steady + sigstr + on  */
}
 
static void rt_incvol(void)
{
        outb(0x98, io);         /* volume up + sigstr + on      */
        sleep_delay(100000);
        outb(0xd8, io);         /* volume steady + sigstr + on  */
}
 
static void rt_mute(struct rt_device *dev)
{
        dev->muted = 1;
        mutex_lock(&lock);
        outb(0xd0, io);                 /* volume steady, off           */
        mutex_unlock(&lock);
}
 
static int rt_setvol(struct rt_device *dev, int vol)
{
        int i;
 
        mutex_lock(&lock);
 
        if(vol == dev->curvol) {        /* requested volume = current */
                if (dev->muted) {       /* user is unmuting the card  */
                        dev->muted = 0;
                        outb (0xd8, io);        /* enable card */
                }
                mutex_unlock(&lock);
                return 0;
        }
 
        if(vol == 0) {                   /* volume = 0 means mute the card */
                outb(0x48, io);         /* volume down but still "on"   */
                sleep_delay(2000000);   /* make sure it's totally down  */
                outb(0xd0, io);         /* volume steady, off           */
                dev->curvol = 0; /* track the volume state!      */
                mutex_unlock(&lock);
                return 0;
        }
 
        dev->muted = 0;
        if(vol > dev->curvol)
                for(i = dev->curvol; i < vol; i++)
                        rt_incvol();
        else
                for(i = dev->curvol; i > vol; i--)
                        rt_decvol();
 
        dev->curvol = vol;
        mutex_unlock(&lock);
        return 0;
}
 
/* the 128+64 on these outb's is to keep the volume stable while tuning
 * without them, the volume _will_ creep up with each frequency change
 * and bit 4 (+16) is to keep the signal strength meter enabled
 */
 
static void send_0_byte(int port, struct rt_device *dev)
{
        if ((dev->curvol == 0) || (dev->muted)) {
                outb_p(128+64+16+  1, port);   /* wr-enable + data low */
                outb_p(128+64+16+2+1, port);   /* clock */
        }
        else {
                outb_p(128+64+16+8+  1, port);  /* on + wr-enable + data low */
                outb_p(128+64+16+8+2+1, port);  /* clock */
        }
        sleep_delay(1000);
}
 
static void send_1_byte(int port, struct rt_device *dev)
{
        if ((dev->curvol == 0) || (dev->muted)) {
                outb_p(128+64+16+4  +1, port);   /* wr-enable+data high */
                outb_p(128+64+16+4+2+1, port);   /* clock */
        }
        else {
                outb_p(128+64+16+8+4  +1, port); /* on+wr-enable+data high */
                outb_p(128+64+16+8+4+2+1, port); /* clock */
        }
 
        sleep_delay(1000);
}
 
static int rt_setfreq(struct rt_device *dev, unsigned long freq)
{
        int i;
 
        /* adapted from radio-aztech.c */
 
        /* now uses VIDEO_TUNER_LOW for fine tuning */
 
        freq += 171200;                 /* Add 10.7 MHz IF              */
        freq /= 800;                    /* Convert to 50 kHz units      */
 
        mutex_lock(&lock);                      /* Stop other ops interfering */
 
        send_0_byte (io, dev);          /*  0: LSB of frequency         */
 
        for (i = 0; i < 13; i++) /*   : frequency bits (1-13)    */
                if (freq & (1 << i))
                        send_1_byte (io, dev);
                else
                        send_0_byte (io, dev);
 
        send_0_byte (io, dev);          /* 14: test bit - always 0    */
        send_0_byte (io, dev);          /* 15: test bit - always 0    */
 
        send_0_byte (io, dev);          /* 16: band data 0 - always 0 */
        send_0_byte (io, dev);          /* 17: band data 1 - always 0 */
        send_0_byte (io, dev);          /* 18: band data 2 - always 0 */
        send_0_byte (io, dev);          /* 19: time base - always 0   */
 
        send_0_byte (io, dev);          /* 20: spacing (0 = 25 kHz)   */
        send_1_byte (io, dev);          /* 21: spacing (1 = 25 kHz)   */
        send_0_byte (io, dev);          /* 22: spacing (0 = 25 kHz)   */
        send_1_byte (io, dev);          /* 23: AM/FM (FM = 1, always) */
 
        if ((dev->curvol == 0) || (dev->muted))
                outb (0xd0, io);        /* volume steady + sigstr */
        else
                outb (0xd8, io);        /* volume steady + sigstr + on */
 
        mutex_unlock(&lock);
 
        return 0;
}
 
static int rt_getsigstr(struct rt_device *dev)
{
        if (inb(io) & 2)        /* bit set = no signal present  */
                return 0;
        return 1;               /* signal present               */
}
 
static struct v4l2_queryctrl radio_qctrl[] = {
        {
                .id            = V4L2_CID_AUDIO_MUTE,
                .name          = "Mute",
                .minimum       = 0,
                .maximum       = 1,
                .default_value = 1,
                .type          = V4L2_CTRL_TYPE_BOOLEAN,
        },{
                .id            = V4L2_CID_AUDIO_VOLUME,
                .name          = "Volume",
                .minimum       = 0,
                .maximum       = 0xff,
                .step          = 1,
                .default_value = 0xff,
                .type          = V4L2_CTRL_TYPE_INTEGER,
        }
};
 
static int vidioc_querycap(struct file *file, void  *priv,
                                        struct v4l2_capability *v)
{
        strlcpy(v->driver, "radio-aimslab", sizeof(v->driver));
        strlcpy(v->card, "RadioTrack", sizeof(v->card));
        sprintf(v->bus_info, "ISA");
        v->version = RADIO_VERSION;
        v->capabilities = V4L2_CAP_TUNER;
        return 0;
}
 
static int vidioc_g_tuner(struct file *file, void *priv,
                                        struct v4l2_tuner *v)
{
        struct video_device *dev = video_devdata(file);
        struct rt_device *rt = dev->priv;
 
        if (v->index > 0)
                return -EINVAL;
 
        strcpy(v->name, "FM");
        v->type = V4L2_TUNER_RADIO;
        v->rangelow = (87*16000);
        v->rangehigh = (108*16000);
        v->rxsubchans = V4L2_TUNER_SUB_MONO;
        v->capability = V4L2_TUNER_CAP_LOW;
        v->audmode = V4L2_TUNER_MODE_MONO;
        v->signal = 0xffff*rt_getsigstr(rt);
        return 0;
}
 
static int vidioc_s_tuner(struct file *file, void *priv,
                                        struct v4l2_tuner *v)
{
        if (v->index > 0)
                return -EINVAL;
        return 0;
}
 
static int vidioc_s_frequency(struct file *file, void *priv,
                                        struct v4l2_frequency *f)
{
        struct video_device *dev = video_devdata(file);
        struct rt_device *rt = dev->priv;
 
        rt->curfreq = f->frequency;
        rt_setfreq(rt, rt->curfreq);
        return 0;
}
 
static int vidioc_g_frequency(struct file *file, void *priv,
                                        struct v4l2_frequency *f)
{
        struct video_device *dev = video_devdata(file);
        struct rt_device *rt = dev->priv;
 
        f->type = V4L2_TUNER_RADIO;
        f->frequency = rt->curfreq;
        return 0;
}
 
static int vidioc_queryctrl(struct file *file, void *priv,
                                        struct v4l2_queryctrl *qc)
{
        int i;
 
        for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
                if (qc->id && qc->id == radio_qctrl[i].id) {
                        memcpy(qc, &(radio_qctrl[i]),
                                                sizeof(*qc));
                        return 0;
                }
        }
        return -EINVAL;
}
 
static int vidioc_g_ctrl(struct file *file, void *priv,
                                        struct v4l2_control *ctrl)
{
        struct video_device *dev = video_devdata(file);
        struct rt_device *rt = dev->priv;
 
        switch (ctrl->id) {
        case V4L2_CID_AUDIO_MUTE:
                ctrl->value = rt->muted;
                return 0;
        case V4L2_CID_AUDIO_VOLUME:
                ctrl->value = rt->curvol * 6554;
                return 0;
        }
        return -EINVAL;
}
 
static int vidioc_s_ctrl(struct file *file, void *priv,
                                        struct v4l2_control *ctrl)
{
        struct video_device *dev = video_devdata(file);
        struct rt_device *rt = dev->priv;
 
        switch (ctrl->id) {
        case V4L2_CID_AUDIO_MUTE:
                if (ctrl->value)
                        rt_mute(rt);
                else
                        rt_setvol(rt,rt->curvol);
                return 0;
        case V4L2_CID_AUDIO_VOLUME:
                rt_setvol(rt,ctrl->value);
                return 0;
        }
        return -EINVAL;
}
 
static int vidioc_g_audio (struct file *file, void *priv,
                                        struct v4l2_audio *a)
{
        if (a->index > 1)
                return -EINVAL;
 
        strcpy(a->name, "Radio");
        a->capability = V4L2_AUDCAP_STEREO;
        return 0;
}
 
static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
{
        *i = 0;
        return 0;
}
 
static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
{
        if (i != 0)
                return -EINVAL;
        return 0;
}
 
static int vidioc_s_audio(struct file *file, void *priv,
                                        struct v4l2_audio *a)
{
        if (a->index != 0)
                return -EINVAL;
        return 0;
}
 
static struct rt_device rtrack_unit;
 
static const struct file_operations rtrack_fops = {
        .owner          = THIS_MODULE,
        .open           = video_exclusive_open,
        .release        = video_exclusive_release,
        .ioctl          = video_ioctl2,
        .compat_ioctl   = v4l_compat_ioctl32,
        .llseek         = no_llseek,
};
 
static struct video_device rtrack_radio=
{
        .owner          = THIS_MODULE,
        .name           = "RadioTrack radio",
        .type           = VID_TYPE_TUNER,
        .fops           = &rtrack_fops,
        .vidioc_querycap    = vidioc_querycap,
        .vidioc_g_tuner     = vidioc_g_tuner,
        .vidioc_s_tuner     = vidioc_s_tuner,
        .vidioc_g_audio     = vidioc_g_audio,
        .vidioc_s_audio     = vidioc_s_audio,
        .vidioc_g_input     = vidioc_g_input,
        .vidioc_s_input     = vidioc_s_input,
        .vidioc_g_frequency = vidioc_g_frequency,
        .vidioc_s_frequency = vidioc_s_frequency,
        .vidioc_queryctrl   = vidioc_queryctrl,
        .vidioc_g_ctrl      = vidioc_g_ctrl,
        .vidioc_s_ctrl      = vidioc_s_ctrl,
};
 
static int __init rtrack_init(void)
{
        if(io==-1)
        {
                printk(KERN_ERR "You must set an I/O address with io=0x???\n");
                return -EINVAL;
        }
 
        if (!request_region(io, 2, "rtrack"))
        {
                printk(KERN_ERR "rtrack: port 0x%x already in use\n", io);
                return -EBUSY;
        }
 
        rtrack_radio.priv=&rtrack_unit;
 
        if(video_register_device(&rtrack_radio, VFL_TYPE_RADIO, radio_nr)==-1)
        {
                release_region(io, 2);
                return -EINVAL;
        }
        printk(KERN_INFO "AIMSlab RadioTrack/RadioReveal card driver.\n");
 
        /* Set up the I/O locking */
 
        mutex_init(&lock);
 
        /* mute card - prevents noisy bootups */
 
        /* this ensures that the volume is all the way down  */
        outb(0x48, io);         /* volume down but still "on"   */
        sleep_delay(2000000);   /* make sure it's totally down  */
        outb(0xc0, io);         /* steady volume, mute card     */
        rtrack_unit.curvol = 0;
 
        return 0;
}
 
MODULE_AUTHOR("M.Kirkwood");
MODULE_DESCRIPTION("A driver for the RadioTrack/RadioReveal radio card.");
MODULE_LICENSE("GPL");
 
module_param(io, int, 0);
MODULE_PARM_DESC(io, "I/O address of the RadioTrack card (0x20f or 0x30f)");
module_param(radio_nr, int, 0);
 
static void __exit cleanup_rtrack_module(void)
{
        video_unregister_device(&rtrack_radio);
        release_region(io,2);
}
 
module_init(rtrack_init);
module_exit(cleanup_rtrack_module);
 

Browse

Tools

Subversion Repositories test_project

[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [media/] [radio/] [radio-aimslab.c] - Blame information for rev 62

Line No.	Rev	Author	Line
1	62	marcus.erl	`/* radiotrack (radioreveal) driver for Linux radio support`
2			`* (c) 1997 M. Kirkwood`
3			`* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>`
4			`* Converted to new API by Alan Cox <Alan.Cox@linux.org>`
5			`* Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org>`
6			`*`
7			`* History:`
8			`* 1999-02-24 Russell Kroll <rkroll@exploits.org>`
9			`* Fine tuning/VIDEO_TUNER_LOW`
10			`* Frequency range expanded to start at 87 MHz`
11			`*`
12			`* TODO: Allow for more than one of these foolish entities :-)`
13			`*`
14			`* Notes on the hardware (reverse engineered from other peoples'`
15			`* reverse engineering of AIMS' code :-)`
16			`*`
17			`* Frequency control is done digitally -- ie out(port,encodefreq(95.8));`
18			`*`
19			`* The signal strength query is unsurprisingly inaccurate. And it seems`
20			`* to indicate that (on my card, at least) the frequency setting isn't`
21			`* too great. (I have to tune up .025MHz from what the freq should be`
22			`* to get a report that the thing is tuned.)`
23			`*`
24			`* Volume control is (ugh) analogue:`
25			`* out(port, start_increasing_volume);`
26			`* wait(a_wee_while);`
27			`* out(port, stop_changing_the_volume);`
28			`*`
29			`*/`
30
31			`#include <linux/module.h> /* Modules */`
32			`#include <linux/init.h> /* Initdata */`
33			`#include <linux/ioport.h> /* request_region */`
34			`#include <linux/delay.h> /* udelay */`
35			`#include <asm/io.h> /* outb, outb_p */`
36			`#include <asm/uaccess.h> /* copy to/from user */`
37			`#include <linux/videodev2.h> /* kernel radio structs */`
38			`#include <media/v4l2-common.h>`
39			`#include <asm/semaphore.h> /* Lock for the I/O */`
40
41			`#include <linux/version.h> /* for KERNEL_VERSION MACRO */`
42			`#define RADIO_VERSION KERNEL_VERSION(0,0,2)`
43
44			`#ifndef CONFIG_RADIO_RTRACK_PORT`
45			`#define CONFIG_RADIO_RTRACK_PORT -1`
46			`#endif`
47
48			`static int io = CONFIG_RADIO_RTRACK_PORT;`
49			`static int radio_nr = -1;`
50			`static struct mutex lock;`
51
52			`struct rt_device`
53			`{`
54			`int port;`
55			`int curvol;`
56			`unsigned long curfreq;`
57			`int muted;`
58			`};`
59
60
61			`/* local things */`
62
63			`static void sleep_delay(long n)`
64			`{`
65			`/* Sleep nicely for 'n' uS */`
66			`int d=n/msecs_to_jiffies(1000);`
67			`if(!d)`
68			`udelay(n);`
69			`else`
70			`msleep(jiffies_to_msecs(d));`
71			`}`
72
73			`static void rt_decvol(void)`
74			`{`
75			`outb(0x58, io); /* volume down + sigstr + on */`
76			`sleep_delay(100000);`
77			`outb(0xd8, io); /* volume steady + sigstr + on */`
78			`}`
79
80			`static void rt_incvol(void)`
81			`{`
82			`outb(0x98, io); /* volume up + sigstr + on */`
83			`sleep_delay(100000);`
84			`outb(0xd8, io); /* volume steady + sigstr + on */`
85			`}`
86
87			`static void rt_mute(struct rt_device *dev)`
88			`{`
89			`dev->muted = 1;`
90			`mutex_lock(&lock);`
91			`outb(0xd0, io); /* volume steady, off */`
92			`mutex_unlock(&lock);`
93			`}`
94
95			`static int rt_setvol(struct rt_device *dev, int vol)`
96			`{`
97			`int i;`
98
99			`mutex_lock(&lock);`
100
101			`if(vol == dev->curvol) { /* requested volume = current */`
102			`if (dev->muted) { /* user is unmuting the card */`
103			`dev->muted = 0;`
104			`outb (0xd8, io); /* enable card */`
105			`}`
106			`mutex_unlock(&lock);`
107			`return 0;`
108			`}`
109
110			`if(vol == 0) { /* volume = 0 means mute the card */`
111			`outb(0x48, io); /* volume down but still "on" */`
112			`sleep_delay(2000000); /* make sure it's totally down */`
113			`outb(0xd0, io); /* volume steady, off */`
114			`dev->curvol = 0; /* track the volume state! */`
115			`mutex_unlock(&lock);`
116			`return 0;`
117			`}`
118
119			`dev->muted = 0;`
120			`if(vol > dev->curvol)`
121			`for(i = dev->curvol; i < vol; i++)`
122			`rt_incvol();`
123			`else`
124			`for(i = dev->curvol; i > vol; i--)`
125			`rt_decvol();`
126
127			`dev->curvol = vol;`
128			`mutex_unlock(&lock);`
129			`return 0;`
130			`}`
131
132			`/* the 128+64 on these outb's is to keep the volume stable while tuning`
133			`* without them, the volume _will_ creep up with each frequency change`
134			`* and bit 4 (+16) is to keep the signal strength meter enabled`
135			`*/`
136
137			`static void send_0_byte(int port, struct rt_device *dev)`
138			`{`
139			`if ((dev->curvol == 0) \|\| (dev->muted)) {`
140			`outb_p(128+64+16+ 1, port); /* wr-enable + data low */`
141			`outb_p(128+64+16+2+1, port); /* clock */`
142			`}`
143			`else {`
144			`outb_p(128+64+16+8+ 1, port); /* on + wr-enable + data low */`
145			`outb_p(128+64+16+8+2+1, port); /* clock */`
146			`}`
147			`sleep_delay(1000);`
148			`}`
149
150			`static void send_1_byte(int port, struct rt_device *dev)`
151			`{`
152			`if ((dev->curvol == 0) \|\| (dev->muted)) {`
153			`outb_p(128+64+16+4 +1, port); /* wr-enable+data high */`
154			`outb_p(128+64+16+4+2+1, port); /* clock */`
155			`}`
156			`else {`
157			`outb_p(128+64+16+8+4 +1, port); /* on+wr-enable+data high */`
158			`outb_p(128+64+16+8+4+2+1, port); /* clock */`
159			`}`
160
161			`sleep_delay(1000);`
162			`}`
163
164			`static int rt_setfreq(struct rt_device *dev, unsigned long freq)`
165			`{`
166			`int i;`
167
168			`/* adapted from radio-aztech.c */`
169
170			`/* now uses VIDEO_TUNER_LOW for fine tuning */`
171
172			`freq += 171200; /* Add 10.7 MHz IF */`
173			`freq /= 800; /* Convert to 50 kHz units */`
174
175			`mutex_lock(&lock); /* Stop other ops interfering */`
176
177			`send_0_byte (io, dev); /* 0: LSB of frequency */`
178
179			`for (i = 0; i < 13; i++) /* : frequency bits (1-13) */`
180			`if (freq & (1 << i))`
181			`send_1_byte (io, dev);`
182			`else`
183			`send_0_byte (io, dev);`
184
185			`send_0_byte (io, dev); /* 14: test bit - always 0 */`
186			`send_0_byte (io, dev); /* 15: test bit - always 0 */`
187
188			`send_0_byte (io, dev); /* 16: band data 0 - always 0 */`
189			`send_0_byte (io, dev); /* 17: band data 1 - always 0 */`
190			`send_0_byte (io, dev); /* 18: band data 2 - always 0 */`
191			`send_0_byte (io, dev); /* 19: time base - always 0 */`
192
193			`send_0_byte (io, dev); /* 20: spacing (0 = 25 kHz) */`
194			`send_1_byte (io, dev); /* 21: spacing (1 = 25 kHz) */`
195			`send_0_byte (io, dev); /* 22: spacing (0 = 25 kHz) */`
196			`send_1_byte (io, dev); /* 23: AM/FM (FM = 1, always) */`
197
198			`if ((dev->curvol == 0) \|\| (dev->muted))`
199			`outb (0xd0, io); /* volume steady + sigstr */`
200			`else`
201			`outb (0xd8, io); /* volume steady + sigstr + on */`
202
203			`mutex_unlock(&lock);`
204
205			`return 0;`
206			`}`
207
208			`static int rt_getsigstr(struct rt_device *dev)`
209			`{`
210			`if (inb(io) & 2) /* bit set = no signal present */`
211			`return 0;`
212			`return 1; /* signal present */`
213			`}`
214
215			`static struct v4l2_queryctrl radio_qctrl[] = {`
216			`{`
217			`.id = V4L2_CID_AUDIO_MUTE,`
218			`.name = "Mute",`
219			`.minimum = 0,`
220			`.maximum = 1,`
221			`.default_value = 1,`
222			`.type = V4L2_CTRL_TYPE_BOOLEAN,`
223			`},{`
224			`.id = V4L2_CID_AUDIO_VOLUME,`
225			`.name = "Volume",`
226			`.minimum = 0,`
227			`.maximum = 0xff,`
228			`.step = 1,`
229			`.default_value = 0xff,`
230			`.type = V4L2_CTRL_TYPE_INTEGER,`
231			`}`
232			`};`
233
234			`static int vidioc_querycap(struct file file, void priv,`
235			`struct v4l2_capability *v)`
236			`{`
237			`strlcpy(v->driver, "radio-aimslab", sizeof(v->driver));`
238			`strlcpy(v->card, "RadioTrack", sizeof(v->card));`
239			`sprintf(v->bus_info, "ISA");`
240			`v->version = RADIO_VERSION;`
241			`v->capabilities = V4L2_CAP_TUNER;`
242			`return 0;`
243			`}`
244
245			`static int vidioc_g_tuner(struct file file, void priv,`
246			`struct v4l2_tuner *v)`
247			`{`
248			`struct video_device *dev = video_devdata(file);`
249			`struct rt_device *rt = dev->priv;`
250
251			`if (v->index > 0)`
252			`return -EINVAL;`
253
254			`strcpy(v->name, "FM");`
255			`v->type = V4L2_TUNER_RADIO;`
256			`v->rangelow = (87*16000);`
257			`v->rangehigh = (108*16000);`
258			`v->rxsubchans = V4L2_TUNER_SUB_MONO;`
259			`v->capability = V4L2_TUNER_CAP_LOW;`
260			`v->audmode = V4L2_TUNER_MODE_MONO;`
261			`v->signal = 0xffff*rt_getsigstr(rt);`
262			`return 0;`
263			`}`
264
265			`static int vidioc_s_tuner(struct file file, void priv,`
266			`struct v4l2_tuner *v)`
267			`{`
268			`if (v->index > 0)`
269			`return -EINVAL;`
270			`return 0;`
271			`}`
272
273			`static int vidioc_s_frequency(struct file file, void priv,`
274			`struct v4l2_frequency *f)`
275			`{`
276			`struct video_device *dev = video_devdata(file);`
277			`struct rt_device *rt = dev->priv;`
278
279			`rt->curfreq = f->frequency;`
280			`rt_setfreq(rt, rt->curfreq);`
281			`return 0;`
282			`}`
283
284			`static int vidioc_g_frequency(struct file file, void priv,`
285			`struct v4l2_frequency *f)`
286			`{`
287			`struct video_device *dev = video_devdata(file);`
288			`struct rt_device *rt = dev->priv;`
289
290			`f->type = V4L2_TUNER_RADIO;`
291			`f->frequency = rt->curfreq;`
292			`return 0;`
293			`}`
294
295			`static int vidioc_queryctrl(struct file file, void priv,`
296			`struct v4l2_queryctrl *qc)`
297			`{`
298			`int i;`
299
300			`for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {`
301			`if (qc->id && qc->id == radio_qctrl[i].id) {`
302			`memcpy(qc, &(radio_qctrl[i]),`
303			`sizeof(*qc));`
304			`return 0;`
305			`}`
306			`}`
307			`return -EINVAL;`
308			`}`
309
310			`static int vidioc_g_ctrl(struct file file, void priv,`
311			`struct v4l2_control *ctrl)`
312			`{`
313			`struct video_device *dev = video_devdata(file);`
314			`struct rt_device *rt = dev->priv;`
315
316			`switch (ctrl->id) {`
317			`case V4L2_CID_AUDIO_MUTE:`
318			`ctrl->value = rt->muted;`
319			`return 0;`
320			`case V4L2_CID_AUDIO_VOLUME:`
321			`ctrl->value = rt->curvol * 6554;`
322			`return 0;`
323			`}`
324			`return -EINVAL;`
325			`}`
326
327			`static int vidioc_s_ctrl(struct file file, void priv,`
328			`struct v4l2_control *ctrl)`
329			`{`
330			`struct video_device *dev = video_devdata(file);`
331			`struct rt_device *rt = dev->priv;`
332
333			`switch (ctrl->id) {`
334			`case V4L2_CID_AUDIO_MUTE:`
335			`if (ctrl->value)`
336			`rt_mute(rt);`
337			`else`
338			`rt_setvol(rt,rt->curvol);`
339			`return 0;`
340			`case V4L2_CID_AUDIO_VOLUME:`
341			`rt_setvol(rt,ctrl->value);`
342			`return 0;`
343			`}`
344			`return -EINVAL;`
345			`}`
346
347			`static int vidioc_g_audio (struct file file, void priv,`
348			`struct v4l2_audio *a)`
349			`{`
350			`if (a->index > 1)`
351			`return -EINVAL;`
352
353			`strcpy(a->name, "Radio");`
354			`a->capability = V4L2_AUDCAP_STEREO;`
355			`return 0;`
356			`}`
357
358			`static int vidioc_g_input(struct file filp, void priv, unsigned int *i)`
359			`{`
360			`*i = 0;`
361			`return 0;`
362			`}`
363
364			`static int vidioc_s_input(struct file filp, void priv, unsigned int i)`
365			`{`
366			`if (i != 0)`
367			`return -EINVAL;`
368			`return 0;`
369			`}`
370
371			`static int vidioc_s_audio(struct file file, void priv,`
372			`struct v4l2_audio *a)`
373			`{`
374			`if (a->index != 0)`
375			`return -EINVAL;`
376			`return 0;`
377			`}`
378
379			`static struct rt_device rtrack_unit;`
380
381			`static const struct file_operations rtrack_fops = {`
382			`.owner = THIS_MODULE,`
383			`.open = video_exclusive_open,`
384			`.release = video_exclusive_release,`
385			`.ioctl = video_ioctl2,`
386			`.compat_ioctl = v4l_compat_ioctl32,`
387			`.llseek = no_llseek,`
388			`};`
389
390			`static struct video_device rtrack_radio=`
391			`{`
392			`.owner = THIS_MODULE,`
393			`.name = "RadioTrack radio",`
394			`.type = VID_TYPE_TUNER,`
395			`.fops = &rtrack_fops,`
396			`.vidioc_querycap = vidioc_querycap,`
397			`.vidioc_g_tuner = vidioc_g_tuner,`
398			`.vidioc_s_tuner = vidioc_s_tuner,`
399			`.vidioc_g_audio = vidioc_g_audio,`
400			`.vidioc_s_audio = vidioc_s_audio,`
401			`.vidioc_g_input = vidioc_g_input,`
402			`.vidioc_s_input = vidioc_s_input,`
403			`.vidioc_g_frequency = vidioc_g_frequency,`
404			`.vidioc_s_frequency = vidioc_s_frequency,`
405			`.vidioc_queryctrl = vidioc_queryctrl,`
406			`.vidioc_g_ctrl = vidioc_g_ctrl,`
407			`.vidioc_s_ctrl = vidioc_s_ctrl,`
408			`};`
409
410			`static int __init rtrack_init(void)`
411			`{`
412			`if(io==-1)`
413			`{`
414			`printk(KERN_ERR "You must set an I/O address with io=0x???\n");`
415			`return -EINVAL;`
416			`}`
417
418			`if (!request_region(io, 2, "rtrack"))`
419			`{`
420			`printk(KERN_ERR "rtrack: port 0x%x already in use\n", io);`
421			`return -EBUSY;`
422			`}`
423
424			`rtrack_radio.priv=&rtrack_unit;`
425
426			`if(video_register_device(&rtrack_radio, VFL_TYPE_RADIO, radio_nr)==-1)`
427			`{`
428			`release_region(io, 2);`
429			`return -EINVAL;`
430			`}`
431			`printk(KERN_INFO "AIMSlab RadioTrack/RadioReveal card driver.\n");`
432
433			`/* Set up the I/O locking */`
434
435			`mutex_init(&lock);`
436
437			`/* mute card - prevents noisy bootups */`
438
439			`/* this ensures that the volume is all the way down */`
440			`outb(0x48, io); /* volume down but still "on" */`
441			`sleep_delay(2000000); /* make sure it's totally down */`
442			`outb(0xc0, io); /* steady volume, mute card */`
443			`rtrack_unit.curvol = 0;`
444
445			`return 0;`
446			`}`
447
448			`MODULE_AUTHOR("M.Kirkwood");`
449			`MODULE_DESCRIPTION("A driver for the RadioTrack/RadioReveal radio card.");`
450			`MODULE_LICENSE("GPL");`
451
452			`module_param(io, int, 0);`
453			`MODULE_PARM_DESC(io, "I/O address of the RadioTrack card (0x20f or 0x30f)");`
454			`module_param(radio_nr, int, 0);`
455
456			`static void __exit cleanup_rtrack_module(void)`
457			`{`
458			`video_unregister_device(&rtrack_radio);`
459			`release_region(io,2);`
460			`}`
461
462			`module_init(rtrack_init);`
463			`module_exit(cleanup_rtrack_module);`
464