blob: 90f416ce97ea63073e05ea295503c3081bc0e211 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * ALSA driver for TEA5757/5759 Philips AM/FM radio tuner chips
3 *
Jaroslav Kyselac1017a42007-10-15 09:50:19 +02004 * Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz>
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 *
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 *
Igor M. Liplianin4b296312008-11-09 15:25:31 -030021 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070022
Linus Torvalds1da177e2005-04-16 15:20:36 -070023#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
Jaroslav Kyselac1017a42007-10-15 09:50:19 +020030MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
Linus Torvalds1da177e2005-04-16 15:20:36 -070031MODULE_DESCRIPTION("Routines for control of TEA5757/5759 Philips AM/FM radio tuner chips");
32MODULE_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
Takashi Iwai97f02e02005-11-17 14:17:19 +010060static void snd_tea575x_set_freq(struct snd_tea575x *tea)
Linus Torvalds1da177e2005-04-16 15:20:36 -070061{
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
Hans Verkuilbec43662008-12-30 06:58:20 -030087static int snd_tea575x_ioctl(struct file *file,
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 unsigned int cmd, unsigned long data)
89{
Hans Verkuilc170ecf2008-08-23 08:32:09 -030090 struct snd_tea575x *tea = video_drvdata(file);
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 void __user *arg = (void __user *)data;
Igor M. Liplianin4b296312008-11-09 15:25:31 -030092
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 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;
Igor M. Liplianin4b296312008-11-09 15:25:31 -0300113 if (copy_from_user(&v, arg,sizeof(v))!=0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114 return -EFAULT;
Igor M. Liplianin4b296312008-11-09 15:25:31 -0300115 if (v.tuner) /* Only 1 tuner */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116 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:
Igor M. Liplianin4b296312008-11-09 15:25:31 -0300147 {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 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;
Igor M. Liplianin4b296312008-11-09 15:25:31 -0300153 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154 }
155 case VIDIOCSAUDIO:
156 {
157 struct video_audio v;
Igor M. Liplianin4b296312008-11-09 15:25:31 -0300158 if(copy_from_user(&v, arg, sizeof(v)))
159 return -EFAULT;
Andy Shevchenko69252122008-01-24 18:11:53 +0100160 if (tea->ops->mute)
161 tea->ops->mute(tea,
162 (v.flags &
163 VIDEO_AUDIO_MUTE) ? 1 : 0);
Igor M. Liplianin4b296312008-11-09 15:25:31 -0300164 if(v.audio)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165 return -EINVAL;
166 return 0;
167 }
168 default:
169 return -ENOIOCTLCMD;
170 }
171}
172
173static void snd_tea575x_release(struct video_device *vfd)
174{
175}
176
Hans Verkuilbec43662008-12-30 06:58:20 -0300177static int snd_tea575x_exclusive_open(struct file *file)
Hans Verkuil2f3d0022008-08-23 04:52:00 -0300178{
Hans Verkuilc170ecf2008-08-23 08:32:09 -0300179 struct snd_tea575x *tea = video_drvdata(file);
Hans Verkuil2f3d0022008-08-23 04:52:00 -0300180
181 return test_and_set_bit(0, &tea->in_use) ? -EBUSY : 0;
182}
183
Hans Verkuilbec43662008-12-30 06:58:20 -0300184static int snd_tea575x_exclusive_release(struct file *file)
Hans Verkuil2f3d0022008-08-23 04:52:00 -0300185{
Hans Verkuilc170ecf2008-08-23 08:32:09 -0300186 struct snd_tea575x *tea = video_drvdata(file);
Hans Verkuil2f3d0022008-08-23 04:52:00 -0300187
188 clear_bit(0, &tea->in_use);
189 return 0;
190}
191
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192/*
193 * initialize all the tea575x chips
194 */
Takashi Iwai97f02e02005-11-17 14:17:19 +0100195void snd_tea575x_init(struct snd_tea575x *tea)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196{
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));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206 strcpy(tea->vd.name, tea->tea5759 ? "TEA5759 radio" : "TEA5757 radio");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207 tea->vd.release = snd_tea575x_release;
208 video_set_drvdata(&tea->vd, tea);
209 tea->vd.fops = &tea->fops;
Hans Verkuil2f3d0022008-08-23 04:52:00 -0300210 tea->in_use = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211 tea->fops.owner = tea->card->module;
Hans Verkuil2f3d0022008-08-23 04:52:00 -0300212 tea->fops.open = snd_tea575x_exclusive_open;
213 tea->fops.release = snd_tea575x_exclusive_release;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214 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);
Andy Shevchenko69252122008-01-24 18:11:53 +0100225
226 /* mute on init */
227 if (tea->ops->mute)
228 tea->ops->mute(tea, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229}
230
Takashi Iwai97f02e02005-11-17 14:17:19 +0100231void snd_tea575x_exit(struct snd_tea575x *tea)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232{
233 if (tea->vd_registered) {
234 video_unregister_device(&tea->vd);
235 tea->vd_registered = 0;
236 }
237}
238
239static int __init alsa_tea575x_module_init(void)
240{
241 return 0;
242}
Igor M. Liplianin4b296312008-11-09 15:25:31 -0300243
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244static void __exit alsa_tea575x_module_exit(void)
245{
246}
Igor M. Liplianin4b296312008-11-09 15:25:31 -0300247
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248module_init(alsa_tea575x_module_init)
249module_exit(alsa_tea575x_module_exit)
250
251EXPORT_SYMBOL(snd_tea575x_init);
252EXPORT_SYMBOL(snd_tea575x_exit);