Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * ALSA driver for TEA5757/5759 Philips AM/FM radio tuner chips | |
3 | * | |
c1017a4c | 4 | * Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz> |
1da177e4 LT |
5 | * |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | * | |
4b29631d | 21 | */ |
1da177e4 | 22 | |
1da177e4 LT |
23 | #include <asm/io.h> |
24 | #include <linux/delay.h> | |
25 | #include <linux/interrupt.h> | |
26 | #include <linux/init.h> | |
5a0e3ad6 | 27 | #include <linux/slab.h> |
9b76ede4 | 28 | #include <linux/version.h> |
1da177e4 LT |
29 | #include <sound/core.h> |
30 | #include <sound/tea575x-tuner.h> | |
31 | ||
c1017a4c | 32 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); |
1da177e4 LT |
33 | MODULE_DESCRIPTION("Routines for control of TEA5757/5759 Philips AM/FM radio tuner chips"); |
34 | MODULE_LICENSE("GPL"); | |
35 | ||
9b76ede4 MCC |
36 | static int radio_nr = -1; |
37 | module_param(radio_nr, int, 0); | |
38 | ||
39 | #define RADIO_VERSION KERNEL_VERSION(0, 0, 2) | |
40 | #define FREQ_LO (87 * 16000) | |
41 | #define FREQ_HI (108 * 16000) | |
42 | ||
1da177e4 LT |
43 | /* |
44 | * definitions | |
45 | */ | |
46 | ||
47 | #define TEA575X_BIT_SEARCH (1<<24) /* 1 = search action, 0 = tuned */ | |
48 | #define TEA575X_BIT_UPDOWN (1<<23) /* 0 = search down, 1 = search up */ | |
49 | #define TEA575X_BIT_MONO (1<<22) /* 0 = stereo, 1 = mono */ | |
50 | #define TEA575X_BIT_BAND_MASK (3<<20) | |
51 | #define TEA575X_BIT_BAND_FM (0<<20) | |
52 | #define TEA575X_BIT_BAND_MW (1<<20) | |
53 | #define TEA575X_BIT_BAND_LW (1<<21) | |
54 | #define TEA575X_BIT_BAND_SW (1<<22) | |
55 | #define TEA575X_BIT_PORT_0 (1<<19) /* user bit */ | |
56 | #define TEA575X_BIT_PORT_1 (1<<18) /* user bit */ | |
57 | #define TEA575X_BIT_SEARCH_MASK (3<<16) /* search level */ | |
58 | #define TEA575X_BIT_SEARCH_5_28 (0<<16) /* FM >5uV, AM >28uV */ | |
59 | #define TEA575X_BIT_SEARCH_10_40 (1<<16) /* FM >10uV, AM > 40uV */ | |
60 | #define TEA575X_BIT_SEARCH_30_63 (2<<16) /* FM >30uV, AM > 63uV */ | |
61 | #define TEA575X_BIT_SEARCH_150_1000 (3<<16) /* FM > 150uV, AM > 1000uV */ | |
62 | #define TEA575X_BIT_DUMMY (1<<15) /* buffer */ | |
63 | #define TEA575X_BIT_FREQ_MASK 0x7fff | |
64 | ||
9b76ede4 MCC |
65 | static struct v4l2_queryctrl radio_qctrl[] = { |
66 | { | |
67 | .id = V4L2_CID_AUDIO_MUTE, | |
68 | .name = "Mute", | |
69 | .minimum = 0, | |
70 | .maximum = 1, | |
71 | .default_value = 1, | |
72 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
73 | } | |
74 | }; | |
75 | ||
1da177e4 LT |
76 | /* |
77 | * lowlevel part | |
78 | */ | |
79 | ||
97f02e05 | 80 | static void snd_tea575x_set_freq(struct snd_tea575x *tea) |
1da177e4 LT |
81 | { |
82 | unsigned long freq; | |
83 | ||
84 | freq = tea->freq / 16; /* to kHz */ | |
85 | if (freq > 108000) | |
86 | freq = 108000; | |
87 | if (freq < 87000) | |
88 | freq = 87000; | |
89 | /* crystal fixup */ | |
90 | if (tea->tea5759) | |
91 | freq -= tea->freq_fixup; | |
92 | else | |
93 | freq += tea->freq_fixup; | |
94 | /* freq /= 12.5 */ | |
95 | freq *= 10; | |
96 | freq /= 125; | |
97 | ||
98 | tea->val &= ~TEA575X_BIT_FREQ_MASK; | |
99 | tea->val |= freq & TEA575X_BIT_FREQ_MASK; | |
100 | tea->ops->write(tea, tea->val); | |
101 | } | |
102 | ||
103 | /* | |
104 | * Linux Video interface | |
105 | */ | |
106 | ||
9b76ede4 MCC |
107 | static int vidioc_querycap(struct file *file, void *priv, |
108 | struct v4l2_capability *v) | |
1da177e4 | 109 | { |
c170ecf4 | 110 | struct snd_tea575x *tea = video_drvdata(file); |
9b76ede4 MCC |
111 | |
112 | strcpy(v->card, tea->tea5759 ? "TEA5759" : "TEA5757"); | |
113 | strlcpy(v->driver, "tea575x-tuner", sizeof(v->driver)); | |
114 | strlcpy(v->card, "Maestro Radio", sizeof(v->card)); | |
115 | sprintf(v->bus_info, "PCI"); | |
116 | v->version = RADIO_VERSION; | |
117 | v->capabilities = V4L2_CAP_TUNER; | |
118 | return 0; | |
119 | } | |
120 | ||
121 | static int vidioc_g_tuner(struct file *file, void *priv, | |
122 | struct v4l2_tuner *v) | |
123 | { | |
124 | if (v->index > 0) | |
125 | return -EINVAL; | |
126 | ||
127 | strcpy(v->name, "FM"); | |
128 | v->type = V4L2_TUNER_RADIO; | |
129 | v->rangelow = FREQ_LO; | |
130 | v->rangehigh = FREQ_HI; | |
131 | v->rxsubchans = V4L2_TUNER_SUB_MONO|V4L2_TUNER_SUB_STEREO; | |
132 | v->capability = V4L2_TUNER_CAP_LOW; | |
133 | v->audmode = V4L2_TUNER_MODE_MONO; | |
134 | v->signal = 0xffff; | |
135 | return 0; | |
136 | } | |
137 | ||
138 | static int vidioc_s_tuner(struct file *file, void *priv, | |
139 | struct v4l2_tuner *v) | |
140 | { | |
141 | if (v->index > 0) | |
142 | return -EINVAL; | |
143 | return 0; | |
144 | } | |
145 | ||
146 | static int vidioc_g_frequency(struct file *file, void *priv, | |
147 | struct v4l2_frequency *f) | |
148 | { | |
149 | struct snd_tea575x *tea = video_drvdata(file); | |
150 | ||
151 | f->type = V4L2_TUNER_RADIO; | |
152 | f->frequency = tea->freq; | |
153 | return 0; | |
154 | } | |
155 | ||
156 | static int vidioc_s_frequency(struct file *file, void *priv, | |
157 | struct v4l2_frequency *f) | |
158 | { | |
159 | struct snd_tea575x *tea = video_drvdata(file); | |
160 | ||
161 | if (f->frequency < FREQ_LO || f->frequency > FREQ_HI) | |
162 | return -EINVAL; | |
163 | ||
164 | tea->freq = f->frequency; | |
165 | ||
166 | snd_tea575x_set_freq(tea); | |
167 | ||
168 | return 0; | |
169 | } | |
170 | ||
171 | static int vidioc_g_audio(struct file *file, void *priv, | |
172 | struct v4l2_audio *a) | |
173 | { | |
174 | if (a->index > 1) | |
175 | return -EINVAL; | |
176 | ||
177 | strcpy(a->name, "Radio"); | |
178 | a->capability = V4L2_AUDCAP_STEREO; | |
179 | return 0; | |
180 | } | |
181 | ||
182 | static int vidioc_s_audio(struct file *file, void *priv, | |
183 | struct v4l2_audio *a) | |
184 | { | |
185 | if (a->index != 0) | |
186 | return -EINVAL; | |
187 | return 0; | |
188 | } | |
189 | ||
190 | static int vidioc_queryctrl(struct file *file, void *priv, | |
191 | struct v4l2_queryctrl *qc) | |
192 | { | |
193 | int i; | |
194 | ||
195 | for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) { | |
196 | if (qc->id && qc->id == radio_qctrl[i].id) { | |
197 | memcpy(qc, &(radio_qctrl[i]), | |
198 | sizeof(*qc)); | |
1da177e4 LT |
199 | return 0; |
200 | } | |
9b76ede4 MCC |
201 | } |
202 | return -EINVAL; | |
203 | } | |
204 | ||
205 | static int vidioc_g_ctrl(struct file *file, void *priv, | |
206 | struct v4l2_control *ctrl) | |
207 | { | |
208 | struct snd_tea575x *tea = video_drvdata(file); | |
209 | ||
210 | switch (ctrl->id) { | |
211 | case V4L2_CID_AUDIO_MUTE: | |
212 | if (tea->ops->mute) { | |
213 | ctrl->value = tea->mute; | |
4b29631d | 214 | return 0; |
1da177e4 | 215 | } |
9b76ede4 MCC |
216 | } |
217 | return -EINVAL; | |
218 | } | |
219 | ||
220 | static int vidioc_s_ctrl(struct file *file, void *priv, | |
221 | struct v4l2_control *ctrl) | |
222 | { | |
223 | struct snd_tea575x *tea = video_drvdata(file); | |
224 | ||
225 | switch (ctrl->id) { | |
226 | case V4L2_CID_AUDIO_MUTE: | |
227 | if (tea->ops->mute) { | |
228 | tea->ops->mute(tea, ctrl->value); | |
1233faa8 | 229 | tea->mute = ctrl->value; |
1da177e4 LT |
230 | return 0; |
231 | } | |
1da177e4 | 232 | } |
9b76ede4 MCC |
233 | return -EINVAL; |
234 | } | |
235 | ||
236 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) | |
237 | { | |
238 | *i = 0; | |
239 | return 0; | |
1da177e4 LT |
240 | } |
241 | ||
9b76ede4 | 242 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) |
1da177e4 | 243 | { |
9b76ede4 MCC |
244 | if (i != 0) |
245 | return -EINVAL; | |
246 | return 0; | |
1da177e4 LT |
247 | } |
248 | ||
bec43661 | 249 | static int snd_tea575x_exclusive_open(struct file *file) |
2f3d0025 | 250 | { |
c170ecf4 | 251 | struct snd_tea575x *tea = video_drvdata(file); |
2f3d0025 HV |
252 | |
253 | return test_and_set_bit(0, &tea->in_use) ? -EBUSY : 0; | |
254 | } | |
255 | ||
bec43661 | 256 | static int snd_tea575x_exclusive_release(struct file *file) |
2f3d0025 | 257 | { |
c170ecf4 | 258 | struct snd_tea575x *tea = video_drvdata(file); |
2f3d0025 HV |
259 | |
260 | clear_bit(0, &tea->in_use); | |
261 | return 0; | |
262 | } | |
263 | ||
9b76ede4 MCC |
264 | static const struct v4l2_file_operations tea575x_fops = { |
265 | .owner = THIS_MODULE, | |
266 | .open = snd_tea575x_exclusive_open, | |
267 | .release = snd_tea575x_exclusive_release, | |
268 | .ioctl = video_ioctl2, | |
269 | }; | |
270 | ||
271 | static const struct v4l2_ioctl_ops tea575x_ioctl_ops = { | |
272 | .vidioc_querycap = vidioc_querycap, | |
273 | .vidioc_g_tuner = vidioc_g_tuner, | |
274 | .vidioc_s_tuner = vidioc_s_tuner, | |
275 | .vidioc_g_audio = vidioc_g_audio, | |
276 | .vidioc_s_audio = vidioc_s_audio, | |
277 | .vidioc_g_input = vidioc_g_input, | |
278 | .vidioc_s_input = vidioc_s_input, | |
279 | .vidioc_g_frequency = vidioc_g_frequency, | |
280 | .vidioc_s_frequency = vidioc_s_frequency, | |
281 | .vidioc_queryctrl = vidioc_queryctrl, | |
282 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
283 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
284 | }; | |
285 | ||
286 | static struct video_device tea575x_radio = { | |
287 | .name = "tea575x-tuner", | |
288 | .fops = &tea575x_fops, | |
289 | .ioctl_ops = &tea575x_ioctl_ops, | |
290 | .release = video_device_release, | |
291 | }; | |
292 | ||
1da177e4 LT |
293 | /* |
294 | * initialize all the tea575x chips | |
295 | */ | |
97f02e05 | 296 | void snd_tea575x_init(struct snd_tea575x *tea) |
1da177e4 | 297 | { |
9b76ede4 | 298 | int retval; |
1da177e4 | 299 | unsigned int val; |
9b76ede4 | 300 | struct video_device *tea575x_radio_inst; |
1da177e4 LT |
301 | |
302 | val = tea->ops->read(tea); | |
303 | if (val == 0x1ffffff || val == 0) { | |
9b76ede4 MCC |
304 | snd_printk(KERN_ERR |
305 | "tea575x-tuner: Cannot find TEA575x chip\n"); | |
1da177e4 LT |
306 | return; |
307 | } | |
308 | ||
2f3d0025 | 309 | tea->in_use = 0; |
9b76ede4 MCC |
310 | tea->val = TEA575X_BIT_BAND_FM | TEA575X_BIT_SEARCH_10_40; |
311 | tea->freq = 90500 * 16; /* 90.5Mhz default */ | |
312 | ||
313 | tea575x_radio_inst = video_device_alloc(); | |
314 | if (tea575x_radio_inst == NULL) { | |
315 | printk(KERN_ERR "tea575x-tuner: not enough memory\n"); | |
1da177e4 LT |
316 | return; |
317 | } | |
1da177e4 | 318 | |
9b76ede4 MCC |
319 | memcpy(tea575x_radio_inst, &tea575x_radio, sizeof(tea575x_radio)); |
320 | ||
321 | strcpy(tea575x_radio.name, tea->tea5759 ? | |
322 | "TEA5759 radio" : "TEA5757 radio"); | |
323 | ||
324 | video_set_drvdata(tea575x_radio_inst, tea); | |
325 | ||
326 | retval = video_register_device(tea575x_radio_inst, | |
327 | VFL_TYPE_RADIO, radio_nr); | |
328 | if (retval) { | |
329 | printk(KERN_ERR "tea575x-tuner: can't register video device!\n"); | |
330 | kfree(tea575x_radio_inst); | |
331 | return; | |
332 | } | |
1da177e4 LT |
333 | |
334 | snd_tea575x_set_freq(tea); | |
69252128 AS |
335 | |
336 | /* mute on init */ | |
9b76ede4 | 337 | if (tea->ops->mute) { |
69252128 | 338 | tea->ops->mute(tea, 1); |
9b76ede4 MCC |
339 | tea->mute = 1; |
340 | } | |
341 | tea->vd = tea575x_radio_inst; | |
1da177e4 LT |
342 | } |
343 | ||
97f02e05 | 344 | void snd_tea575x_exit(struct snd_tea575x *tea) |
1da177e4 | 345 | { |
9b76ede4 MCC |
346 | if (tea->vd) { |
347 | video_unregister_device(tea->vd); | |
348 | tea->vd = NULL; | |
1da177e4 LT |
349 | } |
350 | } | |
351 | ||
352 | static int __init alsa_tea575x_module_init(void) | |
353 | { | |
354 | return 0; | |
355 | } | |
4b29631d | 356 | |
1da177e4 LT |
357 | static void __exit alsa_tea575x_module_exit(void) |
358 | { | |
359 | } | |
4b29631d | 360 | |
1da177e4 LT |
361 | module_init(alsa_tea575x_module_init) |
362 | module_exit(alsa_tea575x_module_exit) | |
363 | ||
364 | EXPORT_SYMBOL(snd_tea575x_init); | |
365 | EXPORT_SYMBOL(snd_tea575x_exit); |