Annotation of src/sys/dev/isa/sf16fmr2.c, Revision 1.4.4.3
1.4.4.3 ! jdolecek 1: /* $NetBSD: sf16fmr2.c,v 1.4.4.2 2002/09/06 08:44:52 jdolecek Exp $ */
1.4.4.2 thorpej 2: /* $OpenBSD: sf16fmr2.c,v 1.3 2001/12/18 18:48:08 mickey Exp $ */
3: /* $RuOBSD: sf16fmr2.c,v 1.12 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: /* SoundForte RadioLink SF16-FMR2 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/param.h>
39: #include <sys/systm.h>
40: #include <sys/proc.h>
41: #include <sys/errno.h>
42: #include <sys/ioctl.h>
43: #include <sys/device.h>
44: #include <sys/radioio.h>
45:
46: #include <dev/isa/isavar.h>
47: #include <dev/radio_if.h>
48: #include <dev/ic/tea5757.h>
49:
50: #define SF16FMR2_BASE_VALID(x) (x == 0x384)
51: #define SF16FMR2_CAPABILITIES RADIO_CAPS_DETECT_STEREO | \
52: RADIO_CAPS_DETECT_SIGNAL | \
53: RADIO_CAPS_SET_MONO | \
54: RADIO_CAPS_LOCK_SENSITIVITY | \
55: RADIO_CAPS_HW_AFC | \
56: RADIO_CAPS_HW_SEARCH
57:
58: #define SF16FMR2_AMPLIFIER (1 << 7)
59: #define SF16FMR2_SIGNAL (1 << 3)
60: #define SF16FMR2_STEREO (1 << 3)
61:
62: #define SF16FMR2_MUTE 0x00
63: #define SF16FMR2_UNMUTE 0x04
64:
65: #define SF16FMR2_DATA_ON (1 << 0)
66: #define SF16FMR2_DATA_OFF (0 << 0)
67:
68: #define SF16FMR2_CLCK_ON (1 << 1)
69: #define SF16FMR2_CLCK_OFF (0 << 1)
70:
71: #define SF16FMR2_WREN_ON (0 << 2) /* SF16-FMR2 has inverse WREN */
72: #define SF16FMR2_WREN_OFF (1 << 2)
73:
74: #define SF16FMR2_READ_CLOCK_LOW \
75: SF16FMR2_DATA_ON | SF16FMR2_CLCK_OFF | SF16FMR2_WREN_OFF
76:
77: #define SF16FMR2_READ_CLOCK_HIGH \
78: SF16FMR2_DATA_ON | SF16FMR2_CLCK_ON | SF16FMR2_WREN_OFF
79:
80: int sf2r_probe(struct device *, struct cfdata *, void *);
81: void sf2r_attach(struct device *, struct device * self, void *);
82:
83: int sf2r_get_info(void *, struct radio_info *);
84: int sf2r_set_info(void *, struct radio_info *);
85: int sf2r_search(void *, int);
86:
87: /* define our interface to the higher level radio driver */
88: struct radio_hw_if sf2r_hw_if = {
89: NULL, /* open */
90: NULL, /* close */
91: sf2r_get_info,
92: sf2r_set_info,
93: sf2r_search
94: };
95:
96: struct sf2r_softc {
97: struct device sc_dev;
98:
99: u_int32_t freq;
100: u_int32_t stereo;
101: u_int32_t lock;
102: u_int8_t vol;
103: int mute;
104:
105: struct tea5757_t tea;
106: };
107:
108: struct cfattach sf2r_ca = {
109: sizeof(struct sf2r_softc), sf2r_probe, sf2r_attach
110: };
111:
112: void sf2r_set_mute(struct sf2r_softc *);
113: int sf2r_find(bus_space_tag_t, bus_space_handle_t);
114:
115: u_int32_t sf2r_read_register(bus_space_tag_t, bus_space_handle_t, bus_size_t);
116:
117: void sf2r_init(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t);
118: void sf2r_rset(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t);
119: void sf2r_write_bit(bus_space_tag_t, bus_space_handle_t, bus_size_t, int);
120:
121: int
122: sf2r_probe(struct device *parent, struct cfdata *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 (!SF16FMR2_BASE_VALID(iobase)) {
139: printf("sf2r: 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 = sf2r_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
165: sf2r_attach(struct device *parent, struct device *self, void *aux)
166: {
167: struct sf2r_softc *sc = (void *) self;
168: struct isa_attach_args *ia = aux;
169:
170: sc->tea.iot = ia->ia_iot;
1.4.4.3 ! jdolecek 171: sc->tea.flags = 0;
1.4.4.2 thorpej 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("sf2rattach: bus_space_map() failed");
182:
183: sc->tea.offset = 0;
184:
185: sc->tea.init = sf2r_init;
186: sc->tea.rset = sf2r_rset;
187: sc->tea.write_bit = sf2r_write_bit;
188: sc->tea.read = sf2r_read_register;
189:
190: printf(": SoundForte RadioLink SF16-FMR2\n");
191: tea5757_set_freq(&sc->tea, sc->stereo, sc->lock, sc->freq);
192: sf2r_set_mute(sc);
193:
194: radio_attach_mi(&sf2r_hw_if, sc, &sc->sc_dev);
195: }
196:
197: /*
198: * Mute/unmute the card
199: */
200: void
201: sf2r_set_mute(struct sf2r_softc *sc)
202: {
203: u_int8_t mute;
204:
205: mute = (sc->mute || !sc->vol) ? SF16FMR2_MUTE : SF16FMR2_UNMUTE;
206: bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute);
207: DELAY(64);
208: bus_space_write_1(sc->tea.iot, sc->tea.ioh, 0, mute);
209: }
210:
211: void
212: sf2r_init(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, u_int32_t d)
213: {
214: bus_space_write_1(iot, ioh, off, SF16FMR2_MUTE);
215: }
216:
217: void
218: sf2r_rset(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, u_int32_t d)
219: {
220: bus_space_write_1(iot, ioh, off, SF16FMR2_MUTE);
221: bus_space_write_1(iot, ioh, off, SF16FMR2_UNMUTE);
222: }
223:
224: int
225: sf2r_find(bus_space_tag_t iot, bus_space_handle_t ioh)
226: {
227: struct sf2r_softc sc;
228: u_int32_t freq;
229:
230: sc.tea.iot = iot;
231: sc.tea.ioh = ioh;
232: sc.tea.offset = 0;
233: sc.tea.init = sf2r_init;
234: sc.tea.rset = sf2r_rset;
235: sc.tea.write_bit = sf2r_write_bit;
236: sc.tea.read = sf2r_read_register;
237: sc.lock = TEA5757_S030;
238: sc.stereo = TEA5757_STEREO;
239:
240: if ((bus_space_read_1(iot, ioh, 0) & 0x70) == 0x30) {
241: /*
242: * Let's try to write and read a frequency.
243: * If the written and read frequencies are
244: * the same then success.
245: */
246: sc.freq = MIN_FM_FREQ;
247: tea5757_set_freq(&sc.tea, sc.stereo, sc.lock, sc.freq);
248: sf2r_set_mute(&sc);
249: freq = sf2r_read_register(iot, ioh, sc.tea.offset);
250: if (tea5757_decode_freq(freq) == sc.freq)
251: return 1;
252: }
253:
254: return 0;
255: }
256:
257: void
258: sf2r_write_bit(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, int bit)
259: {
260: u_int8_t data;
261:
262: data = bit ? SF16FMR2_DATA_ON : SF16FMR2_DATA_OFF;
263:
264: bus_space_write_1(iot, ioh, off,
265: SF16FMR2_WREN_ON | SF16FMR2_CLCK_OFF | data);
266: bus_space_write_1(iot, ioh, off,
267: SF16FMR2_WREN_ON | SF16FMR2_CLCK_ON | data);
268: bus_space_write_1(iot, ioh, off,
269: SF16FMR2_WREN_ON | SF16FMR2_CLCK_OFF | data);
270: }
271:
272: u_int32_t
273: sf2r_read_register(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off)
274: {
275: u_int32_t res = 0;
276: u_int8_t i, state = 0;
277:
278: bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_LOW);
279: DELAY(6);
280: bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_HIGH);
281:
282: i = bus_space_read_1(iot, ioh, off);
283: DELAY(6);
284: /* Amplifier: 0 - not present, 1 - present */
285: state = i & SF16FMR2_AMPLIFIER ? (1 << 2) : (0 << 2);
286: /* Signal: 0 - not tuned, 1 - tuned */
287: state |= i & SF16FMR2_SIGNAL ? (0 << 1) : (1 << 1);
288:
289: bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_LOW);
290: i = bus_space_read_1(iot, ioh, off);
291: /* Stereo: 0 - mono, 1 - stereo */
292: state |= i & SF16FMR2_STEREO ? (0 << 0) : (1 << 0);
293: res = i & SF16FMR2_DATA_ON;
294:
295: i = 23;
296: while ( i-- ) {
297: DELAY(6);
298: res <<= 1;
299: bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_HIGH);
300: DELAY(6);
301: bus_space_write_1(iot, ioh, off, SF16FMR2_READ_CLOCK_LOW);
302: res |= bus_space_read_1(iot, ioh, off) & SF16FMR2_DATA_ON;
303: }
304:
305: return res | (state << 24);
306: }
307:
308: int
309: sf2r_get_info(void *v, struct radio_info *ri)
310: {
311: struct sf2r_softc *sc = v;
312: u_int32_t buf;
313:
314: ri->mute = sc->mute;
315: ri->volume = sc->vol ? 255 : 0;
316: ri->stereo = sc->stereo == TEA5757_STEREO ? 1 : 0;
317: ri->caps = SF16FMR2_CAPABILITIES;
318: ri->rfreq = 0;
319: ri->lock = tea5757_decode_lock(sc->lock);
320:
321: buf = sf2r_read_register(sc->tea.iot, sc->tea.ioh, sc->tea.offset);
322: ri->freq = sc->freq = tea5757_decode_freq(buf);
323: ri->info = 3 & (buf >> 24);
324:
325: return (0);
326: }
327:
328: int
329: sf2r_set_info(void *v, struct radio_info *ri)
330: {
331: struct sf2r_softc *sc = v;
332:
333: sc->mute = ri->mute ? 1 : 0;
334: sc->vol = ri->volume ? 255 : 0;
335: sc->stereo = ri->stereo ? TEA5757_STEREO: TEA5757_MONO;
336: sc->lock = tea5757_encode_lock(ri->lock);
337: ri->freq = sc->freq = tea5757_set_freq(&sc->tea,
338: sc->lock, sc->stereo, ri->freq);
339: sf2r_set_mute(sc);
340:
341: return (0);
342: }
343:
344: int
345: sf2r_search(void *v, int f)
346: {
347: struct sf2r_softc *sc = v;
348:
349: tea5757_search(&sc->tea, sc->lock, sc->stereo, f);
350: sf2r_set_mute(sc);
351:
352: return (0);
353: }
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