pcmcia: CompactFlash driver for PA Semi Electra boards
[pv_ops_mirror.git] / drivers / media / radio / radio-trust.c
blobc11981fed827deb3572f828ce0dc6f7dc39058cf
1 /* radio-trust.c - Trust FM Radio card driver for Linux 2.2
2 * by Eric Lammerts <eric@scintilla.utwente.nl>
4 * Based on radio-aztech.c. Original notes:
6 * Adapted to support the Video for Linux API by
7 * Russell Kroll <rkroll@exploits.org>. Based on original tuner code by:
9 * Quay Ly
10 * Donald Song
11 * Jason Lewis (jlewis@twilight.vtc.vsc.edu)
12 * Scott McGrath (smcgrath@twilight.vtc.vsc.edu)
13 * William McGrath (wmcgrath@twilight.vtc.vsc.edu)
15 * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
18 #include <stdarg.h>
19 #include <linux/module.h>
20 #include <linux/init.h>
21 #include <linux/ioport.h>
22 #include <asm/io.h>
23 #include <asm/uaccess.h>
24 #include <linux/videodev2.h>
25 #include <media/v4l2-common.h>
27 #include <linux/version.h> /* for KERNEL_VERSION MACRO */
28 #define RADIO_VERSION KERNEL_VERSION(0,0,2)
30 static struct v4l2_queryctrl radio_qctrl[] = {
32 .id = V4L2_CID_AUDIO_MUTE,
33 .name = "Mute",
34 .minimum = 0,
35 .maximum = 1,
36 .default_value = 1,
37 .type = V4L2_CTRL_TYPE_BOOLEAN,
38 },{
39 .id = V4L2_CID_AUDIO_VOLUME,
40 .name = "Volume",
41 .minimum = 0,
42 .maximum = 65535,
43 .step = 2048,
44 .default_value = 65535,
45 .type = V4L2_CTRL_TYPE_INTEGER,
46 },{
47 .id = V4L2_CID_AUDIO_BASS,
48 .name = "Bass",
49 .minimum = 0,
50 .maximum = 65535,
51 .step = 4370,
52 .default_value = 32768,
53 .type = V4L2_CTRL_TYPE_INTEGER,
54 },{
55 .id = V4L2_CID_AUDIO_TREBLE,
56 .name = "Treble",
57 .minimum = 0,
58 .maximum = 65535,
59 .step = 4370,
60 .default_value = 32768,
61 .type = V4L2_CTRL_TYPE_INTEGER,
65 /* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */
67 #ifndef CONFIG_RADIO_TRUST_PORT
68 #define CONFIG_RADIO_TRUST_PORT -1
69 #endif
71 static int io = CONFIG_RADIO_TRUST_PORT;
72 static int radio_nr = -1;
73 static int ioval = 0xf;
74 static __u16 curvol;
75 static __u16 curbass;
76 static __u16 curtreble;
77 static unsigned long curfreq;
78 static int curstereo;
79 static int curmute;
81 /* i2c addresses */
82 #define TDA7318_ADDR 0x88
83 #define TSA6060T_ADDR 0xc4
85 #define TR_DELAY do { inb(io); inb(io); inb(io); } while(0)
86 #define TR_SET_SCL outb(ioval |= 2, io)
87 #define TR_CLR_SCL outb(ioval &= 0xfd, io)
88 #define TR_SET_SDA outb(ioval |= 1, io)
89 #define TR_CLR_SDA outb(ioval &= 0xfe, io)
91 static void write_i2c(int n, ...)
93 unsigned char val, mask;
94 va_list args;
96 va_start(args, n);
98 /* start condition */
99 TR_SET_SDA;
100 TR_SET_SCL;
101 TR_DELAY;
102 TR_CLR_SDA;
103 TR_CLR_SCL;
104 TR_DELAY;
106 for(; n; n--) {
107 val = va_arg(args, unsigned);
108 for(mask = 0x80; mask; mask >>= 1) {
109 if(val & mask)
110 TR_SET_SDA;
111 else
112 TR_CLR_SDA;
113 TR_SET_SCL;
114 TR_DELAY;
115 TR_CLR_SCL;
116 TR_DELAY;
118 /* acknowledge bit */
119 TR_SET_SDA;
120 TR_SET_SCL;
121 TR_DELAY;
122 TR_CLR_SCL;
123 TR_DELAY;
126 /* stop condition */
127 TR_CLR_SDA;
128 TR_DELAY;
129 TR_SET_SCL;
130 TR_DELAY;
131 TR_SET_SDA;
132 TR_DELAY;
134 va_end(args);
137 static void tr_setvol(__u16 vol)
139 curvol = vol / 2048;
140 write_i2c(2, TDA7318_ADDR, curvol ^ 0x1f);
143 static int basstreble2chip[15] = {
144 0, 1, 2, 3, 4, 5, 6, 7, 14, 13, 12, 11, 10, 9, 8
147 static void tr_setbass(__u16 bass)
149 curbass = bass / 4370;
150 write_i2c(2, TDA7318_ADDR, 0x60 | basstreble2chip[curbass]);
153 static void tr_settreble(__u16 treble)
155 curtreble = treble / 4370;
156 write_i2c(2, TDA7318_ADDR, 0x70 | basstreble2chip[curtreble]);
159 static void tr_setstereo(int stereo)
161 curstereo = !!stereo;
162 ioval = (ioval & 0xfb) | (!curstereo << 2);
163 outb(ioval, io);
166 static void tr_setmute(int mute)
168 curmute = !!mute;
169 ioval = (ioval & 0xf7) | (curmute << 3);
170 outb(ioval, io);
173 static int tr_getsigstr(void)
175 int i, v;
177 for(i = 0, v = 0; i < 100; i++) v |= inb(io);
178 return (v & 1)? 0 : 0xffff;
181 static int tr_getstereo(void)
183 /* don't know how to determine it, just return the setting */
184 return curstereo;
187 static void tr_setfreq(unsigned long f)
189 f /= 160; /* Convert to 10 kHz units */
190 f += 1070; /* Add 10.7 MHz IF */
192 write_i2c(5, TSA6060T_ADDR, (f << 1) | 1, f >> 7, 0x60 | ((f >> 15) & 1), 0);
195 static int vidioc_querycap(struct file *file, void *priv,
196 struct v4l2_capability *v)
198 strlcpy(v->driver, "radio-trust", sizeof(v->driver));
199 strlcpy(v->card, "Trust FM Radio", sizeof(v->card));
200 sprintf(v->bus_info, "ISA");
201 v->version = RADIO_VERSION;
202 v->capabilities = V4L2_CAP_TUNER;
203 return 0;
206 static int vidioc_g_tuner(struct file *file, void *priv,
207 struct v4l2_tuner *v)
209 if (v->index > 0)
210 return -EINVAL;
212 strcpy(v->name, "FM");
213 v->type = V4L2_TUNER_RADIO;
214 v->rangelow = (87.5*16000);
215 v->rangehigh = (108*16000);
216 v->rxsubchans = V4L2_TUNER_SUB_MONO|V4L2_TUNER_SUB_STEREO;
217 v->capability = V4L2_TUNER_CAP_LOW;
218 if (tr_getstereo())
219 v->audmode = V4L2_TUNER_MODE_STEREO;
220 else
221 v->audmode = V4L2_TUNER_MODE_MONO;
222 v->signal = tr_getsigstr();
223 return 0;
226 static int vidioc_s_tuner(struct file *file, void *priv,
227 struct v4l2_tuner *v)
229 if (v->index > 0)
230 return -EINVAL;
232 return 0;
235 static int vidioc_s_frequency(struct file *file, void *priv,
236 struct v4l2_frequency *f)
238 curfreq = f->frequency;
239 tr_setfreq(curfreq);
240 return 0;
243 static int vidioc_g_frequency(struct file *file, void *priv,
244 struct v4l2_frequency *f)
246 f->type = V4L2_TUNER_RADIO;
247 f->frequency = curfreq;
248 return 0;
251 static int vidioc_queryctrl(struct file *file, void *priv,
252 struct v4l2_queryctrl *qc)
254 int i;
256 for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
257 if (qc->id && qc->id == radio_qctrl[i].id) {
258 memcpy(qc, &(radio_qctrl[i]),
259 sizeof(*qc));
260 return 0;
263 return -EINVAL;
266 static int vidioc_g_ctrl(struct file *file, void *priv,
267 struct v4l2_control *ctrl)
269 switch (ctrl->id) {
270 case V4L2_CID_AUDIO_MUTE:
271 ctrl->value = curmute;
272 return 0;
273 case V4L2_CID_AUDIO_VOLUME:
274 ctrl->value = curvol * 2048;
275 return 0;
276 case V4L2_CID_AUDIO_BASS:
277 ctrl->value = curbass * 4370;
278 return 0;
279 case V4L2_CID_AUDIO_TREBLE:
280 ctrl->value = curtreble * 4370;
281 return 0;
283 return -EINVAL;
286 static int vidioc_s_ctrl(struct file *file, void *priv,
287 struct v4l2_control *ctrl)
289 switch (ctrl->id) {
290 case V4L2_CID_AUDIO_MUTE:
291 tr_setmute(ctrl->value);
292 return 0;
293 case V4L2_CID_AUDIO_VOLUME:
294 tr_setvol(ctrl->value);
295 return 0;
296 case V4L2_CID_AUDIO_BASS:
297 tr_setbass(ctrl->value);
298 return 0;
299 case V4L2_CID_AUDIO_TREBLE:
300 tr_settreble(ctrl->value);
301 return 0;
303 return -EINVAL;
306 static int vidioc_g_audio(struct file *file, void *priv,
307 struct v4l2_audio *a)
309 if (a->index > 1)
310 return -EINVAL;
312 strcpy(a->name, "Radio");
313 a->capability = V4L2_AUDCAP_STEREO;
314 return 0;
317 static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
319 *i = 0;
320 return 0;
323 static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
325 if (i != 0)
326 return -EINVAL;
327 return 0;
330 static int vidioc_s_audio(struct file *file, void *priv,
331 struct v4l2_audio *a)
333 if (a->index != 0)
334 return -EINVAL;
335 return 0;
338 static const struct file_operations trust_fops = {
339 .owner = THIS_MODULE,
340 .open = video_exclusive_open,
341 .release = video_exclusive_release,
342 .ioctl = video_ioctl2,
343 .compat_ioctl = v4l_compat_ioctl32,
344 .llseek = no_llseek,
347 static struct video_device trust_radio=
349 .owner = THIS_MODULE,
350 .name = "Trust FM Radio",
351 .type = VID_TYPE_TUNER,
352 .fops = &trust_fops,
353 .vidioc_querycap = vidioc_querycap,
354 .vidioc_g_tuner = vidioc_g_tuner,
355 .vidioc_s_tuner = vidioc_s_tuner,
356 .vidioc_g_frequency = vidioc_g_frequency,
357 .vidioc_s_frequency = vidioc_s_frequency,
358 .vidioc_queryctrl = vidioc_queryctrl,
359 .vidioc_g_ctrl = vidioc_g_ctrl,
360 .vidioc_s_ctrl = vidioc_s_ctrl,
361 .vidioc_g_audio = vidioc_g_audio,
362 .vidioc_s_audio = vidioc_s_audio,
363 .vidioc_g_input = vidioc_g_input,
364 .vidioc_s_input = vidioc_s_input,
367 static int __init trust_init(void)
369 if(io == -1) {
370 printk(KERN_ERR "You must set an I/O address with io=0x???\n");
371 return -EINVAL;
373 if(!request_region(io, 2, "Trust FM Radio")) {
374 printk(KERN_ERR "trust: port 0x%x already in use\n", io);
375 return -EBUSY;
377 if(video_register_device(&trust_radio, VFL_TYPE_RADIO, radio_nr)==-1)
379 release_region(io, 2);
380 return -EINVAL;
383 printk(KERN_INFO "Trust FM Radio card driver v1.0.\n");
385 write_i2c(2, TDA7318_ADDR, 0x80); /* speaker att. LF = 0 dB */
386 write_i2c(2, TDA7318_ADDR, 0xa0); /* speaker att. RF = 0 dB */
387 write_i2c(2, TDA7318_ADDR, 0xc0); /* speaker att. LR = 0 dB */
388 write_i2c(2, TDA7318_ADDR, 0xe0); /* speaker att. RR = 0 dB */
389 write_i2c(2, TDA7318_ADDR, 0x40); /* stereo 1 input, gain = 18.75 dB */
391 tr_setvol(0x8000);
392 tr_setbass(0x8000);
393 tr_settreble(0x8000);
394 tr_setstereo(1);
396 /* mute card - prevents noisy bootups */
397 tr_setmute(1);
399 return 0;
402 MODULE_AUTHOR("Eric Lammerts, Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
403 MODULE_DESCRIPTION("A driver for the Trust FM Radio card.");
404 MODULE_LICENSE("GPL");
406 module_param(io, int, 0);
407 MODULE_PARM_DESC(io, "I/O address of the Trust FM Radio card (0x350 or 0x358)");
408 module_param(radio_nr, int, 0);
410 static void __exit cleanup_trust_module(void)
412 video_unregister_device(&trust_radio);
413 release_region(io, 2);
416 module_init(trust_init);
417 module_exit(cleanup_trust_module);