Commit | Line | Data |
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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> | |
27 | #include <sound/core.h> | |
28 | #include <sound/tea575x-tuner.h> | |
29 | ||
c1017a4c | 30 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); |
1da177e4 LT |
31 | MODULE_DESCRIPTION("Routines for control of TEA5757/5759 Philips AM/FM radio tuner chips"); |
32 | MODULE_LICENSE("GPL"); | |
33 | ||
34 | /* | |
35 | * definitions | |
36 | */ | |
37 | ||
38 | #define TEA575X_BIT_SEARCH (1<<24) /* 1 = search action, 0 = tuned */ | |
39 | #define TEA575X_BIT_UPDOWN (1<<23) /* 0 = search down, 1 = search up */ | |
40 | #define TEA575X_BIT_MONO (1<<22) /* 0 = stereo, 1 = mono */ | |
41 | #define TEA575X_BIT_BAND_MASK (3<<20) | |
42 | #define TEA575X_BIT_BAND_FM (0<<20) | |
43 | #define TEA575X_BIT_BAND_MW (1<<20) | |
44 | #define TEA575X_BIT_BAND_LW (1<<21) | |
45 | #define TEA575X_BIT_BAND_SW (1<<22) | |
46 | #define TEA575X_BIT_PORT_0 (1<<19) /* user bit */ | |
47 | #define TEA575X_BIT_PORT_1 (1<<18) /* user bit */ | |
48 | #define TEA575X_BIT_SEARCH_MASK (3<<16) /* search level */ | |
49 | #define TEA575X_BIT_SEARCH_5_28 (0<<16) /* FM >5uV, AM >28uV */ | |
50 | #define TEA575X_BIT_SEARCH_10_40 (1<<16) /* FM >10uV, AM > 40uV */ | |
51 | #define TEA575X_BIT_SEARCH_30_63 (2<<16) /* FM >30uV, AM > 63uV */ | |
52 | #define TEA575X_BIT_SEARCH_150_1000 (3<<16) /* FM > 150uV, AM > 1000uV */ | |
53 | #define TEA575X_BIT_DUMMY (1<<15) /* buffer */ | |
54 | #define TEA575X_BIT_FREQ_MASK 0x7fff | |
55 | ||
56 | /* | |
57 | * lowlevel part | |
58 | */ | |
59 | ||
97f02e05 | 60 | static void snd_tea575x_set_freq(struct snd_tea575x *tea) |
1da177e4 LT |
61 | { |
62 | unsigned long freq; | |
63 | ||
64 | freq = tea->freq / 16; /* to kHz */ | |
65 | if (freq > 108000) | |
66 | freq = 108000; | |
67 | if (freq < 87000) | |
68 | freq = 87000; | |
69 | /* crystal fixup */ | |
70 | if (tea->tea5759) | |
71 | freq -= tea->freq_fixup; | |
72 | else | |
73 | freq += tea->freq_fixup; | |
74 | /* freq /= 12.5 */ | |
75 | freq *= 10; | |
76 | freq /= 125; | |
77 | ||
78 | tea->val &= ~TEA575X_BIT_FREQ_MASK; | |
79 | tea->val |= freq & TEA575X_BIT_FREQ_MASK; | |
80 | tea->ops->write(tea, tea->val); | |
81 | } | |
82 | ||
83 | /* | |
84 | * Linux Video interface | |
85 | */ | |
86 | ||
bec43661 | 87 | static int snd_tea575x_ioctl(struct file *file, |
1da177e4 LT |
88 | unsigned int cmd, unsigned long data) |
89 | { | |
c170ecf4 | 90 | struct snd_tea575x *tea = video_drvdata(file); |
1da177e4 | 91 | void __user *arg = (void __user *)data; |
4b29631d | 92 | |
1da177e4 LT |
93 | switch(cmd) { |
94 | case VIDIOCGCAP: | |
95 | { | |
96 | struct video_capability v; | |
97 | v.type = VID_TYPE_TUNER; | |
98 | v.channels = 1; | |
99 | v.audios = 1; | |
100 | /* No we don't do pictures */ | |
101 | v.maxwidth = 0; | |
102 | v.maxheight = 0; | |
103 | v.minwidth = 0; | |
104 | v.minheight = 0; | |
105 | strcpy(v.name, tea->tea5759 ? "TEA5759" : "TEA5757"); | |
106 | if (copy_to_user(arg,&v,sizeof(v))) | |
107 | return -EFAULT; | |
108 | return 0; | |
109 | } | |
110 | case VIDIOCGTUNER: | |
111 | { | |
112 | struct video_tuner v; | |
4b29631d | 113 | if (copy_from_user(&v, arg,sizeof(v))!=0) |
1da177e4 | 114 | return -EFAULT; |
4b29631d | 115 | if (v.tuner) /* Only 1 tuner */ |
1da177e4 LT |
116 | return -EINVAL; |
117 | v.rangelow = (87*16000); | |
118 | v.rangehigh = (108*16000); | |
119 | v.flags = VIDEO_TUNER_LOW; | |
120 | v.mode = VIDEO_MODE_AUTO; | |
121 | strcpy(v.name, "FM"); | |
122 | v.signal = 0xFFFF; | |
123 | if (copy_to_user(arg, &v, sizeof(v))) | |
124 | return -EFAULT; | |
125 | return 0; | |
126 | } | |
127 | case VIDIOCSTUNER: | |
128 | { | |
129 | struct video_tuner v; | |
130 | if(copy_from_user(&v, arg, sizeof(v))) | |
131 | return -EFAULT; | |
132 | if(v.tuner!=0) | |
133 | return -EINVAL; | |
134 | /* Only 1 tuner so no setting needed ! */ | |
135 | return 0; | |
136 | } | |
137 | case VIDIOCGFREQ: | |
138 | if(copy_to_user(arg, &tea->freq, sizeof(tea->freq))) | |
139 | return -EFAULT; | |
140 | return 0; | |
141 | case VIDIOCSFREQ: | |
142 | if(copy_from_user(&tea->freq, arg, sizeof(tea->freq))) | |
143 | return -EFAULT; | |
144 | snd_tea575x_set_freq(tea); | |
145 | return 0; | |
146 | case VIDIOCGAUDIO: | |
4b29631d | 147 | { |
1da177e4 LT |
148 | struct video_audio v; |
149 | memset(&v, 0, sizeof(v)); | |
150 | strcpy(v.name, "Radio"); | |
151 | if(copy_to_user(arg,&v, sizeof(v))) | |
152 | return -EFAULT; | |
4b29631d | 153 | return 0; |
1da177e4 LT |
154 | } |
155 | case VIDIOCSAUDIO: | |
156 | { | |
157 | struct video_audio v; | |
4b29631d IL |
158 | if(copy_from_user(&v, arg, sizeof(v))) |
159 | return -EFAULT; | |
69252128 AS |
160 | if (tea->ops->mute) |
161 | tea->ops->mute(tea, | |
162 | (v.flags & | |
163 | VIDEO_AUDIO_MUTE) ? 1 : 0); | |
4b29631d | 164 | if(v.audio) |
1da177e4 LT |
165 | return -EINVAL; |
166 | return 0; | |
167 | } | |
168 | default: | |
169 | return -ENOIOCTLCMD; | |
170 | } | |
171 | } | |
172 | ||
173 | static void snd_tea575x_release(struct video_device *vfd) | |
174 | { | |
175 | } | |
176 | ||
bec43661 | 177 | static int snd_tea575x_exclusive_open(struct file *file) |
2f3d0025 | 178 | { |
c170ecf4 | 179 | struct snd_tea575x *tea = video_drvdata(file); |
2f3d0025 HV |
180 | |
181 | return test_and_set_bit(0, &tea->in_use) ? -EBUSY : 0; | |
182 | } | |
183 | ||
bec43661 | 184 | static int snd_tea575x_exclusive_release(struct file *file) |
2f3d0025 | 185 | { |
c170ecf4 | 186 | struct snd_tea575x *tea = video_drvdata(file); |
2f3d0025 HV |
187 | |
188 | clear_bit(0, &tea->in_use); | |
189 | return 0; | |
190 | } | |
191 | ||
1da177e4 LT |
192 | /* |
193 | * initialize all the tea575x chips | |
194 | */ | |
97f02e05 | 195 | void snd_tea575x_init(struct snd_tea575x *tea) |
1da177e4 LT |
196 | { |
197 | unsigned int val; | |
198 | ||
199 | val = tea->ops->read(tea); | |
200 | if (val == 0x1ffffff || val == 0) { | |
201 | snd_printk(KERN_ERR "Cannot find TEA575x chip\n"); | |
202 | return; | |
203 | } | |
204 | ||
205 | memset(&tea->vd, 0, sizeof(tea->vd)); | |
1da177e4 | 206 | strcpy(tea->vd.name, tea->tea5759 ? "TEA5759 radio" : "TEA5757 radio"); |
1da177e4 LT |
207 | tea->vd.release = snd_tea575x_release; |
208 | video_set_drvdata(&tea->vd, tea); | |
209 | tea->vd.fops = &tea->fops; | |
2f3d0025 | 210 | tea->in_use = 0; |
1da177e4 | 211 | tea->fops.owner = tea->card->module; |
2f3d0025 HV |
212 | tea->fops.open = snd_tea575x_exclusive_open; |
213 | tea->fops.release = snd_tea575x_exclusive_release; | |
1da177e4 LT |
214 | tea->fops.ioctl = snd_tea575x_ioctl; |
215 | if (video_register_device(&tea->vd, VFL_TYPE_RADIO, tea->dev_nr - 1) < 0) { | |
216 | snd_printk(KERN_ERR "unable to register tea575x tuner\n"); | |
217 | return; | |
218 | } | |
219 | tea->vd_registered = 1; | |
220 | ||
221 | tea->val = TEA575X_BIT_BAND_FM | TEA575X_BIT_SEARCH_10_40; | |
222 | tea->freq = 90500 * 16; /* 90.5Mhz default */ | |
223 | ||
224 | snd_tea575x_set_freq(tea); | |
69252128 AS |
225 | |
226 | /* mute on init */ | |
227 | if (tea->ops->mute) | |
228 | tea->ops->mute(tea, 1); | |
1da177e4 LT |
229 | } |
230 | ||
97f02e05 | 231 | void snd_tea575x_exit(struct snd_tea575x *tea) |
1da177e4 LT |
232 | { |
233 | if (tea->vd_registered) { | |
234 | video_unregister_device(&tea->vd); | |
235 | tea->vd_registered = 0; | |
236 | } | |
237 | } | |
238 | ||
239 | static int __init alsa_tea575x_module_init(void) | |
240 | { | |
241 | return 0; | |
242 | } | |
4b29631d | 243 | |
1da177e4 LT |
244 | static void __exit alsa_tea575x_module_exit(void) |
245 | { | |
246 | } | |
4b29631d | 247 | |
1da177e4 LT |
248 | module_init(alsa_tea575x_module_init) |
249 | module_exit(alsa_tea575x_module_exit) | |
250 | ||
251 | EXPORT_SYMBOL(snd_tea575x_init); | |
252 | EXPORT_SYMBOL(snd_tea575x_exit); |