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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [media/] [radio/] [radio-rtrack2.c] - Blame information for rev 62

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/* RadioTrack II driver for Linux radio support (C) 1998 Ben Pfaff
 *
 * Based on RadioTrack I/RadioReveal (C) 1997 M. Kirkwood
 * Converted to new API by Alan Cox <Alan.Cox@linux.org>
 * Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org>
 *
 * TODO: Allow for more than one of these foolish entities :-)
 *
 * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
 */
 
#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 <linux/spinlock.h>
 
#include <linux/version.h>      /* for KERNEL_VERSION MACRO     */
#define RADIO_VERSION KERNEL_VERSION(0,0,2)
 
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       = 65535,
                .step          = 65535,
                .default_value = 0xff,
                .type          = V4L2_CTRL_TYPE_INTEGER,
        }
};
 
#ifndef CONFIG_RADIO_RTRACK2_PORT
#define CONFIG_RADIO_RTRACK2_PORT -1
#endif
 
static int io = CONFIG_RADIO_RTRACK2_PORT;
static int radio_nr = -1;
static spinlock_t lock;
 
struct rt_device
{
        int port;
        unsigned long curfreq;
        int muted;
};
 
 
/* local things */
 
static void rt_mute(struct rt_device *dev)
{
        if(dev->muted)
                return;
        spin_lock(&lock);
        outb(1, io);
        spin_unlock(&lock);
        dev->muted = 1;
}
 
static void rt_unmute(struct rt_device *dev)
{
        if(dev->muted == 0)
                return;
        spin_lock(&lock);
        outb(0, io);
        spin_unlock(&lock);
        dev->muted = 0;
}
 
static void zero(void)
{
        outb_p(1, io);
        outb_p(3, io);
        outb_p(1, io);
}
 
static void one(void)
{
        outb_p(5, io);
        outb_p(7, io);
        outb_p(5, io);
}
 
static int rt_setfreq(struct rt_device *dev, unsigned long freq)
{
        int i;
 
        freq = freq / 200 + 856;
 
        spin_lock(&lock);
 
        outb_p(0xc8, io);
        outb_p(0xc9, io);
        outb_p(0xc9, io);
 
        for (i = 0; i < 10; i++)
                zero ();
 
        for (i = 14; i >= 0; i--)
                if (freq & (1 << i))
                        one ();
                else
                        zero ();
 
        outb_p(0xc8, io);
        if (!dev->muted)
                outb_p(0, io);
 
        spin_unlock(&lock);
        return 0;
}
 
static int vidioc_querycap(struct file *file, void *priv,
                                struct v4l2_capability *v)
{
        strlcpy(v->driver, "radio-rtrack2", sizeof(v->driver));
        strlcpy(v->card, "RadioTrack II", sizeof(v->card));
        sprintf(v->bus_info, "ISA");
        v->version = RADIO_VERSION;
        v->capabilities = V4L2_CAP_TUNER;
        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 rt_getsigstr(struct rt_device *dev)
{
        if (inb(io) & 2)        /* bit set = no signal present  */
                return 0;
        return 1;               /* signal present               */
}
 
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 = (88*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_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:
                if (rt->muted)
                        ctrl->value = 0;
                else
                        ctrl->value = 65535;
                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_unmute(rt);
                return 0;
        case V4L2_CID_AUDIO_VOLUME:
                if (ctrl->value)
                        rt_unmute(rt);
                else
                        rt_mute(rt);
                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 rtrack2_unit;
 
static const struct file_operations rtrack2_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 rtrack2_radio=
{
        .owner          = THIS_MODULE,
        .name           = "RadioTrack II radio",
        .type           = VID_TYPE_TUNER,
        .fops           = &rtrack2_fops,
        .vidioc_querycap    = vidioc_querycap,
        .vidioc_g_tuner     = vidioc_g_tuner,
        .vidioc_s_tuner     = vidioc_s_tuner,
        .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,
        .vidioc_g_audio     = vidioc_g_audio,
        .vidioc_s_audio     = vidioc_s_audio,
        .vidioc_g_input     = vidioc_g_input,
        .vidioc_s_input     = vidioc_s_input,
};
 
static int __init rtrack2_init(void)
{
        if(io==-1)
        {
                printk(KERN_ERR "You must set an I/O address with io=0x20c or io=0x30c\n");
                return -EINVAL;
        }
        if (!request_region(io, 4, "rtrack2"))
        {
                printk(KERN_ERR "rtrack2: port 0x%x already in use\n", io);
                return -EBUSY;
        }
 
        rtrack2_radio.priv=&rtrack2_unit;
 
        spin_lock_init(&lock);
        if(video_register_device(&rtrack2_radio, VFL_TYPE_RADIO, radio_nr)==-1)
        {
                release_region(io, 4);
                return -EINVAL;
        }
 
        printk(KERN_INFO "AIMSlab Radiotrack II card driver.\n");
 
        /* mute card - prevents noisy bootups */
        outb(1, io);
        rtrack2_unit.muted = 1;
 
        return 0;
}
 
MODULE_AUTHOR("Ben Pfaff");
MODULE_DESCRIPTION("A driver for the RadioTrack II radio card.");
MODULE_LICENSE("GPL");
 
module_param(io, int, 0);
MODULE_PARM_DESC(io, "I/O address of the RadioTrack card (0x20c or 0x30c)");
module_param(radio_nr, int, 0);
 
static void __exit rtrack2_cleanup_module(void)
{
        video_unregister_device(&rtrack2_radio);
        release_region(io,4);
}
 
module_init(rtrack2_init);
module_exit(rtrack2_cleanup_module);
 
/*
  Local variables:
  compile-command: "mmake"
  End:
*/

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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [media/] [radio/] [radio-rtrack2.c] - Blame information for rev 62

Line No.	Rev	Author	Line
1	62	marcus.erl	`/* RadioTrack II driver for Linux radio support (C) 1998 Ben Pfaff`
2			`*`
3			`* Based on RadioTrack I/RadioReveal (C) 1997 M. Kirkwood`
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			`* TODO: Allow for more than one of these foolish entities :-)`
8			`*`
9			`* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>`
10			`*/`
11
12			`#include <linux/module.h> /* Modules */`
13			`#include <linux/init.h> /* Initdata */`
14			`#include <linux/ioport.h> /* request_region */`
15			`#include <linux/delay.h> /* udelay */`
16			`#include <asm/io.h> /* outb, outb_p */`
17			`#include <asm/uaccess.h> /* copy to/from user */`
18			`#include <linux/videodev2.h> /* kernel radio structs */`
19			`#include <media/v4l2-common.h>`
20			`#include <linux/spinlock.h>`
21
22			`#include <linux/version.h> /* for KERNEL_VERSION MACRO */`
23			`#define RADIO_VERSION KERNEL_VERSION(0,0,2)`
24
25			`static struct v4l2_queryctrl radio_qctrl[] = {`
26			`{`
27			`.id = V4L2_CID_AUDIO_MUTE,`
28			`.name = "Mute",`
29			`.minimum = 0,`
30			`.maximum = 1,`
31			`.default_value = 1,`
32			`.type = V4L2_CTRL_TYPE_BOOLEAN,`
33			`},{`
34			`.id = V4L2_CID_AUDIO_VOLUME,`
35			`.name = "Volume",`
36			`.minimum = 0,`
37			`.maximum = 65535,`
38			`.step = 65535,`
39			`.default_value = 0xff,`
40			`.type = V4L2_CTRL_TYPE_INTEGER,`
41			`}`
42			`};`
43
44			`#ifndef CONFIG_RADIO_RTRACK2_PORT`
45			`#define CONFIG_RADIO_RTRACK2_PORT -1`
46			`#endif`
47
48			`static int io = CONFIG_RADIO_RTRACK2_PORT;`
49			`static int radio_nr = -1;`
50			`static spinlock_t lock;`
51
52			`struct rt_device`
53			`{`
54			`int port;`
55			`unsigned long curfreq;`
56			`int muted;`
57			`};`
58
59
60			`/* local things */`
61
62			`static void rt_mute(struct rt_device *dev)`
63			`{`
64			`if(dev->muted)`
65			`return;`
66			`spin_lock(&lock);`
67			`outb(1, io);`
68			`spin_unlock(&lock);`
69			`dev->muted = 1;`
70			`}`
71
72			`static void rt_unmute(struct rt_device *dev)`
73			`{`
74			`if(dev->muted == 0)`
75			`return;`
76			`spin_lock(&lock);`
77			`outb(0, io);`
78			`spin_unlock(&lock);`
79			`dev->muted = 0;`
80			`}`
81
82			`static void zero(void)`
83			`{`
84			`outb_p(1, io);`
85			`outb_p(3, io);`
86			`outb_p(1, io);`
87			`}`
88
89			`static void one(void)`
90			`{`
91			`outb_p(5, io);`
92			`outb_p(7, io);`
93			`outb_p(5, io);`
94			`}`
95
96			`static int rt_setfreq(struct rt_device *dev, unsigned long freq)`
97			`{`
98			`int i;`
99
100			`freq = freq / 200 + 856;`
101
102			`spin_lock(&lock);`
103
104			`outb_p(0xc8, io);`
105			`outb_p(0xc9, io);`
106			`outb_p(0xc9, io);`
107
108			`for (i = 0; i < 10; i++)`
109			`zero ();`
110
111			`for (i = 14; i >= 0; i--)`
112			`if (freq & (1 << i))`
113			`one ();`
114			`else`
115			`zero ();`
116
117			`outb_p(0xc8, io);`
118			`if (!dev->muted)`
119			`outb_p(0, io);`
120
121			`spin_unlock(&lock);`
122			`return 0;`
123			`}`
124
125			`static int vidioc_querycap(struct file file, void priv,`
126			`struct v4l2_capability *v)`
127			`{`
128			`strlcpy(v->driver, "radio-rtrack2", sizeof(v->driver));`
129			`strlcpy(v->card, "RadioTrack II", sizeof(v->card));`
130			`sprintf(v->bus_info, "ISA");`
131			`v->version = RADIO_VERSION;`
132			`v->capabilities = V4L2_CAP_TUNER;`
133			`return 0;`
134			`}`
135
136			`static int vidioc_s_tuner(struct file file, void priv,`
137			`struct v4l2_tuner *v)`
138			`{`
139			`if (v->index > 0)`
140			`return -EINVAL;`
141
142			`return 0;`
143			`}`
144
145			`static int rt_getsigstr(struct rt_device *dev)`
146			`{`
147			`if (inb(io) & 2) /* bit set = no signal present */`
148			`return 0;`
149			`return 1; /* signal present */`
150			`}`
151
152			`static int vidioc_g_tuner(struct file file, void priv,`
153			`struct v4l2_tuner *v)`
154			`{`
155			`struct video_device *dev = video_devdata(file);`
156			`struct rt_device *rt = dev->priv;`
157
158			`if (v->index > 0)`
159			`return -EINVAL;`
160
161			`strcpy(v->name, "FM");`
162			`v->type = V4L2_TUNER_RADIO;`
163			`v->rangelow = (88*16000);`
164			`v->rangehigh = (108*16000);`
165			`v->rxsubchans = V4L2_TUNER_SUB_MONO;`
166			`v->capability = V4L2_TUNER_CAP_LOW;`
167			`v->audmode = V4L2_TUNER_MODE_MONO;`
168			`v->signal = 0xFFFF*rt_getsigstr(rt);`
169			`return 0;`
170			`}`
171
172			`static int vidioc_s_frequency(struct file file, void priv,`
173			`struct v4l2_frequency *f)`
174			`{`
175			`struct video_device *dev = video_devdata(file);`
176			`struct rt_device *rt = dev->priv;`
177
178			`rt->curfreq = f->frequency;`
179			`rt_setfreq(rt, rt->curfreq);`
180			`return 0;`
181			`}`
182
183			`static int vidioc_g_frequency(struct file file, void priv,`
184			`struct v4l2_frequency *f)`
185			`{`
186			`struct video_device *dev = video_devdata(file);`
187			`struct rt_device *rt = dev->priv;`
188
189			`f->type = V4L2_TUNER_RADIO;`
190			`f->frequency = rt->curfreq;`
191			`return 0;`
192			`}`
193
194			`static int vidioc_queryctrl(struct file file, void priv,`
195			`struct v4l2_queryctrl *qc)`
196			`{`
197			`int i;`
198
199			`for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {`
200			`if (qc->id && qc->id == radio_qctrl[i].id) {`
201			`memcpy(qc, &(radio_qctrl[i]),`
202			`sizeof(*qc));`
203			`return 0;`
204			`}`
205			`}`
206			`return -EINVAL;`
207			`}`
208
209			`static int vidioc_g_ctrl(struct file file, void priv,`
210			`struct v4l2_control *ctrl)`
211			`{`
212			`struct video_device *dev = video_devdata(file);`
213			`struct rt_device *rt = dev->priv;`
214
215			`switch (ctrl->id) {`
216			`case V4L2_CID_AUDIO_MUTE:`
217			`ctrl->value = rt->muted;`
218			`return 0;`
219			`case V4L2_CID_AUDIO_VOLUME:`
220			`if (rt->muted)`
221			`ctrl->value = 0;`
222			`else`
223			`ctrl->value = 65535;`
224			`return 0;`
225			`}`
226			`return -EINVAL;`
227			`}`
228
229			`static int vidioc_s_ctrl(struct file file, void priv,`
230			`struct v4l2_control *ctrl)`
231			`{`
232			`struct video_device *dev = video_devdata(file);`
233			`struct rt_device *rt = dev->priv;`
234
235			`switch (ctrl->id) {`
236			`case V4L2_CID_AUDIO_MUTE:`
237			`if (ctrl->value)`
238			`rt_mute(rt);`
239			`else`
240			`rt_unmute(rt);`
241			`return 0;`
242			`case V4L2_CID_AUDIO_VOLUME:`
243			`if (ctrl->value)`
244			`rt_unmute(rt);`
245			`else`
246			`rt_mute(rt);`
247			`return 0;`
248			`}`
249			`return -EINVAL;`
250			`}`
251
252			`static int vidioc_g_audio(struct file file, void priv,`
253			`struct v4l2_audio *a)`
254			`{`
255			`if (a->index > 1)`
256			`return -EINVAL;`
257
258			`strcpy(a->name, "Radio");`
259			`a->capability = V4L2_AUDCAP_STEREO;`
260			`return 0;`
261			`}`
262
263			`static int vidioc_g_input(struct file filp, void priv, unsigned int *i)`
264			`{`
265			`*i = 0;`
266			`return 0;`
267			`}`
268
269			`static int vidioc_s_input(struct file filp, void priv, unsigned int i)`
270			`{`
271			`if (i != 0)`
272			`return -EINVAL;`
273			`return 0;`
274			`}`
275
276			`static int vidioc_s_audio(struct file file, void priv,`
277			`struct v4l2_audio *a)`
278			`{`
279			`if (a->index != 0)`
280			`return -EINVAL;`
281			`return 0;`
282			`}`
283
284			`static struct rt_device rtrack2_unit;`
285
286			`static const struct file_operations rtrack2_fops = {`
287			`.owner = THIS_MODULE,`
288			`.open = video_exclusive_open,`
289			`.release = video_exclusive_release,`
290			`.ioctl = video_ioctl2,`
291			`.compat_ioctl = v4l_compat_ioctl32,`
292			`.llseek = no_llseek,`
293			`};`
294
295			`static struct video_device rtrack2_radio=`
296			`{`
297			`.owner = THIS_MODULE,`
298			`.name = "RadioTrack II radio",`
299			`.type = VID_TYPE_TUNER,`
300			`.fops = &rtrack2_fops,`
301			`.vidioc_querycap = vidioc_querycap,`
302			`.vidioc_g_tuner = vidioc_g_tuner,`
303			`.vidioc_s_tuner = vidioc_s_tuner,`
304			`.vidioc_g_frequency = vidioc_g_frequency,`
305			`.vidioc_s_frequency = vidioc_s_frequency,`
306			`.vidioc_queryctrl = vidioc_queryctrl,`
307			`.vidioc_g_ctrl = vidioc_g_ctrl,`
308			`.vidioc_s_ctrl = vidioc_s_ctrl,`
309			`.vidioc_g_audio = vidioc_g_audio,`
310			`.vidioc_s_audio = vidioc_s_audio,`
311			`.vidioc_g_input = vidioc_g_input,`
312			`.vidioc_s_input = vidioc_s_input,`
313			`};`
314
315			`static int __init rtrack2_init(void)`
316			`{`
317			`if(io==-1)`
318			`{`
319			`printk(KERN_ERR "You must set an I/O address with io=0x20c or io=0x30c\n");`
320			`return -EINVAL;`
321			`}`
322			`if (!request_region(io, 4, "rtrack2"))`
323			`{`
324			`printk(KERN_ERR "rtrack2: port 0x%x already in use\n", io);`
325			`return -EBUSY;`
326			`}`
327
328			`rtrack2_radio.priv=&rtrack2_unit;`
329
330			`spin_lock_init(&lock);`
331			`if(video_register_device(&rtrack2_radio, VFL_TYPE_RADIO, radio_nr)==-1)`
332			`{`
333			`release_region(io, 4);`
334			`return -EINVAL;`
335			`}`
336
337			`printk(KERN_INFO "AIMSlab Radiotrack II card driver.\n");`
338
339			`/* mute card - prevents noisy bootups */`
340			`outb(1, io);`
341			`rtrack2_unit.muted = 1;`
342
343			`return 0;`
344			`}`
345
346			`MODULE_AUTHOR("Ben Pfaff");`
347			`MODULE_DESCRIPTION("A driver for the RadioTrack II radio card.");`
348			`MODULE_LICENSE("GPL");`
349
350			`module_param(io, int, 0);`
351			`MODULE_PARM_DESC(io, "I/O address of the RadioTrack card (0x20c or 0x30c)");`
352			`module_param(radio_nr, int, 0);`
353
354			`static void __exit rtrack2_cleanup_module(void)`
355			`{`
356			`video_unregister_device(&rtrack2_radio);`
357			`release_region(io,4);`
358			`}`
359
360			`module_init(rtrack2_init);`
361			`module_exit(rtrack2_cleanup_module);`
362
363			`/*`
364			`Local variables:`
365			`compile-command: "mmake"`
366			`End:`
367			`*/`