Commit | Line | Data |
---|---|---|
8366fc39 KH |
1 | /* Miro PCM20 radio driver for Linux radio support |
2 | * (c) 1998 Ruurd Reitsma <R.A.Reitsma@wbmt.tudelft.nl> | |
3 | * Thanks to Norberto Pellici for the ACI device interface specification | |
4 | * The API part is based on the radiotrack driver by M. Kirkwood | |
5 | * This driver relies on the aci mixer provided by the snd-miro | |
6 | * ALSA driver. | |
7 | * Look there for further info... | |
8 | */ | |
9 | ||
10 | /* What ever you think about the ACI, version 0x07 is not very well! | |
11 | * I can't get frequency, 'tuner status', 'tuner flags' or mute/mono | |
12 | * conditions... Robert | |
13 | */ | |
14 | ||
15 | #include <linux/module.h> | |
16 | #include <linux/init.h> | |
17 | #include <linux/videodev2.h> | |
18 | #include <media/v4l2-device.h> | |
19 | #include <media/v4l2-ioctl.h> | |
7f51a610 | 20 | #include <media/v4l2-ctrls.h> |
f7c096f7 HV |
21 | #include <media/v4l2-fh.h> |
22 | #include <media/v4l2-event.h> | |
8366fc39 KH |
23 | #include <sound/aci.h> |
24 | ||
25 | static int radio_nr = -1; | |
26 | module_param(radio_nr, int, 0); | |
27 | MODULE_PARM_DESC(radio_nr, "Set radio device number (/dev/radioX). Default: -1 (autodetect)"); | |
28 | ||
8366fc39 KH |
29 | struct pcm20 { |
30 | struct v4l2_device v4l2_dev; | |
31 | struct video_device vdev; | |
7f51a610 | 32 | struct v4l2_ctrl_handler ctrl_handler; |
8366fc39 | 33 | unsigned long freq; |
f5e7cc4a | 34 | u32 audmode; |
8366fc39 | 35 | struct snd_miro_aci *aci; |
32958fdd | 36 | struct mutex lock; |
8366fc39 KH |
37 | }; |
38 | ||
39 | static struct pcm20 pcm20_card = { | |
f5e7cc4a HV |
40 | .freq = 87 * 16000, |
41 | .audmode = V4L2_TUNER_MODE_STEREO, | |
8366fc39 KH |
42 | }; |
43 | ||
8366fc39 KH |
44 | static int pcm20_setfreq(struct pcm20 *dev, unsigned long freq) |
45 | { | |
46 | unsigned char freql; | |
47 | unsigned char freqh; | |
48 | struct snd_miro_aci *aci = dev->aci; | |
49 | ||
8366fc39 KH |
50 | freq /= 160; |
51 | if (!(aci->aci_version == 0x07 || aci->aci_version >= 0xb0)) | |
52 | freq /= 10; /* I don't know exactly which version | |
53 | * needs this hack */ | |
54 | freql = freq & 0xff; | |
55 | freqh = freq >> 8; | |
56 | ||
8366fc39 KH |
57 | return snd_aci_cmd(aci, ACI_WRITE_TUNE, freql, freqh); |
58 | } | |
59 | ||
60 | static const struct v4l2_file_operations pcm20_fops = { | |
61 | .owner = THIS_MODULE, | |
f7c096f7 HV |
62 | .open = v4l2_fh_open, |
63 | .poll = v4l2_ctrl_poll, | |
64 | .release = v4l2_fh_release, | |
32958fdd | 65 | .unlocked_ioctl = video_ioctl2, |
8366fc39 KH |
66 | }; |
67 | ||
68 | static int vidioc_querycap(struct file *file, void *priv, | |
69 | struct v4l2_capability *v) | |
70 | { | |
f122d9a8 HV |
71 | struct pcm20 *dev = video_drvdata(file); |
72 | ||
8366fc39 KH |
73 | strlcpy(v->driver, "Miro PCM20", sizeof(v->driver)); |
74 | strlcpy(v->card, "Miro PCM20", sizeof(v->card)); | |
f122d9a8 HV |
75 | snprintf(v->bus_info, sizeof(v->bus_info), "ISA:%s", dev->v4l2_dev.name); |
76 | v->device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO; | |
77 | v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS; | |
8366fc39 KH |
78 | return 0; |
79 | } | |
80 | ||
81 | static int vidioc_g_tuner(struct file *file, void *priv, | |
82 | struct v4l2_tuner *v) | |
83 | { | |
f5e7cc4a HV |
84 | struct pcm20 *dev = video_drvdata(file); |
85 | ||
86 | if (v->index) | |
8366fc39 KH |
87 | return -EINVAL; |
88 | strlcpy(v->name, "FM", sizeof(v->name)); | |
89 | v->type = V4L2_TUNER_RADIO; | |
90 | v->rangelow = 87*16000; | |
91 | v->rangehigh = 108*16000; | |
92 | v->signal = 0xffff; | |
93 | v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; | |
f5e7cc4a HV |
94 | v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; |
95 | v->audmode = dev->audmode; | |
8366fc39 KH |
96 | return 0; |
97 | } | |
98 | ||
99 | static int vidioc_s_tuner(struct file *file, void *priv, | |
100 | struct v4l2_tuner *v) | |
101 | { | |
f5e7cc4a HV |
102 | struct pcm20 *dev = video_drvdata(file); |
103 | ||
104 | if (v->index) | |
105 | return -EINVAL; | |
106 | if (v->audmode > V4L2_TUNER_MODE_STEREO) | |
107 | v->audmode = V4L2_TUNER_MODE_STEREO; | |
108 | snd_aci_cmd(dev->aci, ACI_SET_TUNERMONO, | |
109 | v->audmode == V4L2_TUNER_MODE_MONO, -1); | |
110 | return 0; | |
8366fc39 KH |
111 | } |
112 | ||
113 | static int vidioc_g_frequency(struct file *file, void *priv, | |
114 | struct v4l2_frequency *f) | |
115 | { | |
116 | struct pcm20 *dev = video_drvdata(file); | |
117 | ||
118 | if (f->tuner != 0) | |
119 | return -EINVAL; | |
120 | ||
121 | f->type = V4L2_TUNER_RADIO; | |
122 | f->frequency = dev->freq; | |
123 | return 0; | |
124 | } | |
125 | ||
126 | ||
127 | static int vidioc_s_frequency(struct file *file, void *priv, | |
128 | struct v4l2_frequency *f) | |
129 | { | |
130 | struct pcm20 *dev = video_drvdata(file); | |
131 | ||
132 | if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) | |
133 | return -EINVAL; | |
134 | ||
f5e7cc4a HV |
135 | dev->freq = clamp(f->frequency, 87 * 16000U, 108 * 16000U); |
136 | pcm20_setfreq(dev, dev->freq); | |
8366fc39 KH |
137 | return 0; |
138 | } | |
139 | ||
7f51a610 | 140 | static int pcm20_s_ctrl(struct v4l2_ctrl *ctrl) |
8366fc39 | 141 | { |
7f51a610 | 142 | struct pcm20 *dev = container_of(ctrl->handler, struct pcm20, ctrl_handler); |
8366fc39 KH |
143 | |
144 | switch (ctrl->id) { | |
145 | case V4L2_CID_AUDIO_MUTE: | |
f5e7cc4a | 146 | snd_aci_cmd(dev->aci, ACI_SET_TUNERMUTE, ctrl->val, -1); |
7f51a610 | 147 | return 0; |
8366fc39 | 148 | } |
7f51a610 | 149 | return -EINVAL; |
8366fc39 KH |
150 | } |
151 | ||
8366fc39 KH |
152 | static const struct v4l2_ioctl_ops pcm20_ioctl_ops = { |
153 | .vidioc_querycap = vidioc_querycap, | |
154 | .vidioc_g_tuner = vidioc_g_tuner, | |
155 | .vidioc_s_tuner = vidioc_s_tuner, | |
156 | .vidioc_g_frequency = vidioc_g_frequency, | |
157 | .vidioc_s_frequency = vidioc_s_frequency, | |
f7c096f7 HV |
158 | .vidioc_log_status = v4l2_ctrl_log_status, |
159 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, | |
160 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, | |
7f51a610 HV |
161 | }; |
162 | ||
163 | static const struct v4l2_ctrl_ops pcm20_ctrl_ops = { | |
164 | .s_ctrl = pcm20_s_ctrl, | |
8366fc39 KH |
165 | }; |
166 | ||
167 | static int __init pcm20_init(void) | |
168 | { | |
169 | struct pcm20 *dev = &pcm20_card; | |
170 | struct v4l2_device *v4l2_dev = &dev->v4l2_dev; | |
7f51a610 | 171 | struct v4l2_ctrl_handler *hdl; |
8366fc39 KH |
172 | int res; |
173 | ||
174 | dev->aci = snd_aci_get_aci(); | |
175 | if (dev->aci == NULL) { | |
176 | v4l2_err(v4l2_dev, | |
177 | "you must load the snd-miro driver first!\n"); | |
178 | return -ENODEV; | |
179 | } | |
f122d9a8 | 180 | strlcpy(v4l2_dev->name, "radio-miropcm20", sizeof(v4l2_dev->name)); |
32958fdd | 181 | mutex_init(&dev->lock); |
8366fc39 KH |
182 | |
183 | res = v4l2_device_register(NULL, v4l2_dev); | |
184 | if (res < 0) { | |
185 | v4l2_err(v4l2_dev, "could not register v4l2_device\n"); | |
186 | return -EINVAL; | |
187 | } | |
188 | ||
7f51a610 HV |
189 | hdl = &dev->ctrl_handler; |
190 | v4l2_ctrl_handler_init(hdl, 1); | |
191 | v4l2_ctrl_new_std(hdl, &pcm20_ctrl_ops, | |
192 | V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); | |
193 | v4l2_dev->ctrl_handler = hdl; | |
194 | if (hdl->error) { | |
195 | res = hdl->error; | |
196 | v4l2_err(v4l2_dev, "Could not register control\n"); | |
197 | goto err_hdl; | |
198 | } | |
8366fc39 KH |
199 | strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name)); |
200 | dev->vdev.v4l2_dev = v4l2_dev; | |
201 | dev->vdev.fops = &pcm20_fops; | |
202 | dev->vdev.ioctl_ops = &pcm20_ioctl_ops; | |
203 | dev->vdev.release = video_device_release_empty; | |
32958fdd | 204 | dev->vdev.lock = &dev->lock; |
f7c096f7 | 205 | set_bit(V4L2_FL_USE_FH_PRIO, &dev->vdev.flags); |
8366fc39 | 206 | video_set_drvdata(&dev->vdev, dev); |
f5e7cc4a HV |
207 | snd_aci_cmd(dev->aci, ACI_SET_TUNERMONO, |
208 | dev->audmode == V4L2_TUNER_MODE_MONO, -1); | |
209 | pcm20_setfreq(dev, dev->freq); | |
8366fc39 KH |
210 | |
211 | if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0) | |
7f51a610 | 212 | goto err_hdl; |
8366fc39 KH |
213 | |
214 | v4l2_info(v4l2_dev, "Mirosound PCM20 Radio tuner\n"); | |
215 | return 0; | |
7f51a610 HV |
216 | err_hdl: |
217 | v4l2_ctrl_handler_free(hdl); | |
8366fc39 KH |
218 | v4l2_device_unregister(v4l2_dev); |
219 | return -EINVAL; | |
220 | } | |
221 | ||
222 | MODULE_AUTHOR("Ruurd Reitsma, Krzysztof Helt"); | |
223 | MODULE_DESCRIPTION("A driver for the Miro PCM20 radio card."); | |
224 | MODULE_LICENSE("GPL"); | |
225 | ||
226 | static void __exit pcm20_cleanup(void) | |
227 | { | |
228 | struct pcm20 *dev = &pcm20_card; | |
229 | ||
230 | video_unregister_device(&dev->vdev); | |
f5e7cc4a | 231 | snd_aci_cmd(dev->aci, ACI_SET_TUNERMUTE, 1, -1); |
7f51a610 | 232 | v4l2_ctrl_handler_free(&dev->ctrl_handler); |
8366fc39 KH |
233 | v4l2_device_unregister(&dev->v4l2_dev); |
234 | } | |
235 | ||
236 | module_init(pcm20_init); | |
237 | module_exit(pcm20_cleanup); |