1 /* $NetBSD: radiotrack2.c,v 1.16 2012/10/27 17:18:25 chs Exp $ */
2 /* $OpenBSD: radiotrack2.c,v 1.1 2001/12/05 10:27:06 mickey Exp $ */
3 /* $RuOBSD: radiotrack2.c,v 1.2 2001/10/18 16:51:36 pva Exp $ */
4
5 /*
6 * Copyright (c) 2001 Maxim Tsyplakov <tm@oganer.net>,
7 * Vladimir Popov <jumbo@narod.ru>
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 /* AIMS Lab Radiotrack II FM Radio Card device driver */
32
33 /*
34 * Philips TEA5757H AM/FM Self Tuned Radio:
35 * http://www.semiconductors.philips.com/pip/TEA5757H
36 */
37
38 #include <sys/cdefs.h>
39 __KERNEL_RCSID(0, "$NetBSD: radiotrack2.c,v 1.16 2012/10/27 17:18:25 chs Exp $");
40
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/proc.h>
44 #include <sys/errno.h>
45 #include <sys/ioctl.h>
46 #include <sys/device.h>
47 #include <sys/radioio.h>
48
49 #include <dev/isa/isavar.h>
50 #include <dev/radio_if.h>
51 #include <dev/ic/tea5757.h>
52
53 #define RTII_BASE_VALID(x) ((x == 0x20C) || (x == 0x30C))
54 #define RTII_CAPABILITIES RADIO_CAPS_DETECT_STEREO | \
55 RADIO_CAPS_DETECT_SIGNAL | \
56 RADIO_CAPS_SET_MONO | \
57 RADIO_CAPS_LOCK_SENSITIVITY | \
58 RADIO_CAPS_HW_AFC | \
59 RADIO_CAPS_HW_SEARCH
60
61 #if 0
62 #define RTII_SIGNAL (1 << 3)
63 #define RTII_STEREO (1 << 3)
64 #endif /* 0 */
65
66 #define RTII_MUTE 0x01
67 #define RTII_UNMUTE 0x00
68
69 #define RTII_RESET 0xC8
70
71 #define RTII_DATA_ON (1 << 2)
72 #define RTII_DATA_OFF (0 << 2)
73
74 #define RTII_CLCK_ON (1 << 1)
75 #define RTII_CLCK_OFF (0 << 1)
76
77 #define RTII_WREN_ON (0 << 0)
78 #define RTII_WREN_OFF (1 << 0)
79
80 #define RTII_READ_CLOCK_LOW (RTII_DATA_ON | RTII_CLCK_OFF | RTII_WREN_OFF)
81 #define RTII_READ_CLOCK_HIGH (RTII_DATA_ON | RTII_CLCK_ON | RTII_WREN_OFF)
82
83 int rtii_probe(device_t, cfdata_t, void *);
84 void rtii_attach(device_t, device_t self, void *);
85
86 int rtii_get_info(void *, struct radio_info *);
87 int rtii_set_info(void *, struct radio_info *);
88 int rtii_search(void *, int);
89
90 /* define our interface to the higher level radio driver */
91 const struct radio_hw_if rtii_hw_if = {
92 NULL, /* open */
93 NULL, /* close */
94 rtii_get_info,
95 rtii_set_info,
96 rtii_search
97 };
98
99 struct rtii_softc {
100 u_int32_t freq;
101 u_int32_t stereo;
102 u_int32_t lock;
103 u_int8_t vol;
104 int mute;
105
106 struct tea5757_t tea;
107 };
108
109 CFATTACH_DECL_NEW(rtii, sizeof(struct rtii_softc),
110 rtii_probe, rtii_attach, NULL, NULL);
111
112 void rtii_set_mute(struct rtii_softc *);
113 int rtii_find(bus_space_tag_t, bus_space_handle_t);
114
115 u_int32_t rtii_hw_read(bus_space_tag_t, bus_space_handle_t, bus_size_t);
116
117 void rtii_init(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t);
118 void rtii_rset(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t);
119 void rtii_write_bit(bus_space_tag_t, bus_space_handle_t, bus_size_t, int);
120
121 int
rtii_probe(device_t parent,cfdata_t cf,void * aux)122 rtii_probe(device_t parent, cfdata_t cf, void *aux)
123 {
124 struct isa_attach_args *ia = aux;
125 bus_space_tag_t iot = ia->ia_iot;
126 bus_space_handle_t ioh;
127 u_int r;
128 int iosize = 1, iobase;
129
130 if (ISA_DIRECT_CONFIG(ia))
131 return 0;
132
133 if (ia->ia_nio < 1)
134 return 0;
135
136 iobase = ia->ia_io[0].ir_addr;
137
138 if (!RTII_BASE_VALID(iobase)) {
139 printf("rtii: configured iobase 0x%x invalid\n", iobase);
140 return 0;
141 }
142
143 if (bus_space_map(iot, iobase, iosize, 0, &ioh))
144 return 0;
145
146 r = rtii_find(iot, ioh);
147
148 bus_space_unmap(iot, ioh, iosize);
149
150 if (r != 0) {
151 ia->ia_nio = 1;
152 ia->ia_io[0].ir_size = iosize;
153
154 ia->ia_niomem = 0;
155 ia->ia_nirq = 0;
156 ia->ia_ndrq = 0;
157
158 return (1);
159 }
160
161 return (0);
162 }
163
164 void
rtii_attach(device_t parent,device_t self,void * aux)165 rtii_attach(device_t parent, device_t self, void *aux)
166 {
167 struct rtii_softc *sc = device_private(self);
168 struct isa_attach_args *ia = aux;
169
170 sc->tea.iot = ia->ia_iot;
171 sc->tea.flags = 0;
172 sc->mute = 0;
173 sc->vol = 0;
174 sc->freq = MIN_FM_FREQ;
175 sc->stereo = TEA5757_STEREO;
176 sc->lock = TEA5757_S030;
177
178 /* remap I/O */
179 if (bus_space_map(sc->tea.iot, ia->ia_io[0].ir_addr,
180 ia->ia_io[0].ir_size, 0, &sc->tea.ioh))
181 panic("rtiiattach: bus_space_map() failed");
182
183 sc->tea.offset = 0;
184
185 sc->tea.init = rtii_init;
186 sc->tea.rset = rtii_rset;
187 sc->tea.write_bit = rtii_write_bit;
188 sc->tea.read = rtii_hw_read;
189
190 printf(": AIMS Lab Radiotrack II\n");
191 tea5757_set_freq(&sc->tea, sc->stereo, sc->lock, sc->freq);
192 rtii_set_mute(sc);
193
194 radio_attach_mi(&rtii_hw_if, sc, self);
195 }
196
197 /*
198 * Mute/unmute the card
199 */
200 void
rtii_set_mute(struct rtii_softc * sc)201 rtii_set_mute(struct rtii_softc *sc)
202 {
203 u_int8_t mute;
204
205 mute = (sc->mute || !sc->vol) ? RTII_MUTE : RTII_UNMUTE;
206 bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute);
207 DELAY(6);
208 bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute);
209 }
210
211 void
rtii_init(bus_space_tag_t iot,bus_space_handle_t ioh,bus_size_t off,u_int32_t d)212 rtii_init(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off,
213 u_int32_t d)
214 {
215 bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_OFF);
216 bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_ON);
217 bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_ON);
218 }
219
220 void
rtii_rset(bus_space_tag_t iot,bus_space_handle_t ioh,bus_size_t off,u_int32_t d)221 rtii_rset(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off,
222 u_int32_t d)
223 {
224 bus_space_write_1(iot, ioh, off, RTII_RESET | RTII_WREN_OFF);
225 }
226
227 int
rtii_find(bus_space_tag_t iot,bus_space_handle_t ioh)228 rtii_find(bus_space_tag_t iot, bus_space_handle_t ioh)
229 {
230 struct rtii_softc sc;
231 u_int32_t freq;
232
233 sc.tea.iot = iot;
234 sc.tea.ioh = ioh;
235 sc.tea.offset = 0;
236 sc.tea.init = rtii_init;
237 sc.tea.rset = rtii_rset;
238 sc.tea.write_bit = rtii_write_bit;
239 sc.tea.read = rtii_hw_read;
240 sc.lock = TEA5757_S030;
241 sc.stereo = TEA5757_STEREO;
242
243 /*
244 * Let's try to write and read a frequency.
245 * If the written and read frequencies are
246 * the same then success.
247 */
248 sc.freq = MIN_FM_FREQ;
249 tea5757_set_freq(&sc.tea, sc.stereo, sc.lock, sc.freq);
250 rtii_set_mute(&sc);
251 freq = rtii_hw_read(iot, ioh, sc.tea.offset);
252 if (tea5757_decode_freq(freq, 0) == sc.freq)
253 return 1;
254
255 return 0;
256 }
257
258 void
rtii_write_bit(bus_space_tag_t iot,bus_space_handle_t ioh,bus_size_t off,int bit)259 rtii_write_bit(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, int bit)
260 {
261 u_int8_t data;
262
263 data = bit ? RTII_DATA_ON : RTII_DATA_OFF;
264
265 bus_space_write_1(iot, ioh, off, RTII_WREN_ON | RTII_CLCK_OFF | data);
266 bus_space_write_1(iot, ioh, off, RTII_WREN_ON | RTII_CLCK_ON | data);
267 bus_space_write_1(iot, ioh, off, RTII_WREN_ON | RTII_CLCK_OFF | data);
268 }
269
270 u_int32_t
rtii_hw_read(bus_space_tag_t iot,bus_space_handle_t ioh,bus_size_t off)271 rtii_hw_read(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off)
272 {
273 u_int8_t i;
274 u_int32_t res = 0;
275
276 bus_space_write_1(iot, ioh, off, RTII_READ_CLOCK_LOW);
277 DELAY(6);
278
279 i = 24;
280 while ( i-- ) {
281 bus_space_write_1(iot, ioh, off, RTII_READ_CLOCK_HIGH);
282 DELAY(6);
283 bus_space_write_1(iot, ioh, off, RTII_READ_CLOCK_LOW);
284 res |= bus_space_read_1(iot, ioh, off) & RTII_DATA_ON ? 1 : 0;
285 DELAY(6);
286 res <<= 1;
287 }
288
289 return (res & (TEA5757_DATA | TEA5757_FREQ)) >> 1;
290 }
291
292 int
rtii_get_info(void * v,struct radio_info * ri)293 rtii_get_info(void *v, struct radio_info *ri)
294 {
295 struct rtii_softc *sc = v;
296
297 ri->mute = sc->mute;
298 ri->volume = sc->vol ? 255 : 0;
299 ri->stereo = sc->stereo == TEA5757_STEREO ? 1 : 0;
300 ri->caps = RTII_CAPABILITIES;
301 ri->rfreq = 0;
302 ri->lock = tea5757_decode_lock(sc->lock);
303
304 ri->freq = sc->freq = tea5757_decode_freq(rtii_hw_read(sc->tea.iot,
305 sc->tea.ioh, sc->tea.offset), 0);
306
307 switch (bus_space_read_1(sc->tea.iot, sc->tea.ioh, 0)) {
308 case 0xFD:
309 ri->info = RADIO_INFO_SIGNAL | RADIO_INFO_STEREO;
310 break;
311 case 0xFF:
312 ri->info = 0;
313 break;
314 default:
315 ri->info = RADIO_INFO_SIGNAL;
316 }
317
318 return (0);
319 }
320
321 int
rtii_set_info(void * v,struct radio_info * ri)322 rtii_set_info(void *v, struct radio_info *ri)
323 {
324 struct rtii_softc *sc = v;
325
326 sc->mute = ri->mute ? 1 : 0;
327 sc->vol = ri->volume ? 255 : 0;
328 sc->stereo = ri->stereo ? TEA5757_STEREO: TEA5757_MONO;
329 sc->lock = tea5757_encode_lock(ri->lock);
330 ri->freq = sc->freq = tea5757_set_freq(&sc->tea,
331 sc->lock, sc->stereo, ri->freq);
332 rtii_set_mute(sc);
333
334 return (0);
335 }
336
337 int
rtii_search(void * v,int f)338 rtii_search(void *v, int f)
339 {
340 struct rtii_softc *sc = v;
341
342 tea5757_search(&sc->tea, sc->lock, sc->stereo, f);
343 rtii_set_mute(sc);
344
345 return (0);
346 }
347