2 * Support for Digigram Lola PCI-e boards
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the Free
8 * Software Foundation; either version 2 of the License, or (at your option)
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * You should have received a copy of the GNU General Public License along with
17 * this program; if not, write to the Free Software Foundation, Inc., 59
18 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 #include <linux/kernel.h>
22 #include <linux/init.h>
23 #include <linux/delay.h>
24 #include <sound/core.h>
25 #include <sound/pcm.h>
28 unsigned int lola_sample_rate_convert(unsigned int coded)
33 switch (coded & 0x3) {
34 case 0: freq = 48000; break;
35 case 1: freq = 44100; break;
36 case 2: freq = 32000; break;
37 default: return 0; /* error */
40 /* multiplier / devisor */
41 switch (coded & 0x1c) {
44 case (1 << 2): freq *= 2; break;
45 case (2 << 2): freq *= 4; break;
46 case (5 << 2): freq /= 2; break;
47 case (6 << 2): freq /= 4; break;
48 default: return 0; /* error */
52 switch (coded & 0x60) {
54 case (1 << 5): freq = (freq * 999) / 1000; break;
55 case (2 << 5): freq = (freq * 1001) / 1000; break;
56 default: return 0; /* error */
65 #define LOLA_MAXFREQ_AT_GRANULARITY_MIN 48000
66 #define LOLA_MAXFREQ_AT_GRANULARITY_BELOW_MAX 96000
68 static bool check_gran_clock_compatibility(struct lola *chip,
72 if (!chip->granularity)
75 if (val < LOLA_GRANULARITY_MIN || val > LOLA_GRANULARITY_MAX ||
76 (val % LOLA_GRANULARITY_STEP) != 0)
79 if (val == LOLA_GRANULARITY_MIN) {
80 if (freq > LOLA_MAXFREQ_AT_GRANULARITY_MIN)
82 } else if (val < LOLA_GRANULARITY_MAX) {
83 if (freq > LOLA_MAXFREQ_AT_GRANULARITY_BELOW_MAX)
89 int lola_set_granularity(struct lola *chip, unsigned int val, bool force)
94 if (val == chip->granularity)
97 /* change Gran only if there are no streams allocated ! */
98 if (chip->audio_in_alloc_mask || chip->audio_out_alloc_mask)
101 if (!check_gran_clock_compatibility(chip, val,
102 chip->clock.cur_freq))
106 chip->granularity = val;
107 val /= LOLA_GRANULARITY_STEP;
109 /* audio function group */
110 err = lola_codec_write(chip, 1, LOLA_VERB_SET_GRANULARITY_STEPS,
114 /* this can be a very slow function !!! */
115 usleep_range(400 * val, 20000);
116 return lola_codec_flush(chip);
120 * Clock widget handling
123 int lola_init_clock_widget(struct lola *chip, int nid)
126 int i, j, nitems, nb_verbs, idx, idx_list;
129 err = lola_read_param(chip, nid, LOLA_PAR_AUDIO_WIDGET_CAP, &val);
131 dev_err(chip->card->dev, "Can't read wcaps for 0x%x\n", nid);
135 if ((val & 0xfff00000) != 0x01f00000) { /* test SubType and Type */
136 dev_dbg(chip->card->dev, "No valid clock widget\n");
140 chip->clock.nid = nid;
141 chip->clock.items = val & 0xff;
142 dev_dbg(chip->card->dev, "clock_list nid=%x, entries=%d\n", nid,
144 if (chip->clock.items > MAX_SAMPLE_CLOCK_COUNT) {
145 dev_err(chip->card->dev, "CLOCK_LIST too big: %d\n",
150 nitems = chip->clock.items;
151 nb_verbs = (nitems + 3) / 4;
154 for (i = 0; i < nb_verbs; i++) {
156 unsigned short items[4];
158 err = lola_codec_read(chip, nid, LOLA_VERB_GET_CLOCK_LIST,
159 idx, 0, &val, &res_ex);
161 dev_err(chip->card->dev, "Can't read CLOCK_LIST\n");
165 items[0] = val & 0xfff;
166 items[1] = (val >> 16) & 0xfff;
167 items[2] = res_ex & 0xfff;
168 items[3] = (res_ex >> 16) & 0xfff;
170 for (j = 0; j < 4; j++) {
171 unsigned char type = items[j] >> 8;
172 unsigned int freq = items[j] & 0xff;
173 int format = LOLA_CLOCK_FORMAT_NONE;
174 bool add_clock = true;
175 if (type == LOLA_CLOCK_TYPE_INTERNAL) {
176 freq = lola_sample_rate_convert(freq);
177 if (freq < chip->sample_rate_min)
179 else if (freq == 48000) {
180 chip->clock.cur_index = idx_list;
181 chip->clock.cur_freq = 48000;
182 chip->clock.cur_valid = true;
184 } else if (type == LOLA_CLOCK_TYPE_VIDEO) {
185 freq = lola_sample_rate_convert(freq);
186 if (freq < chip->sample_rate_min)
188 /* video clock has a format (0:NTSC, 1:PAL)*/
190 format = LOLA_CLOCK_FORMAT_NTSC;
192 format = LOLA_CLOCK_FORMAT_PAL;
195 struct lola_sample_clock *sc;
196 sc = &chip->clock.sample_clock[idx_list];
200 /* keep the index used with the board */
201 chip->clock.idx_lookup[idx_list] = idx;
213 /* enable unsolicited events of the clock widget */
214 int lola_enable_clock_events(struct lola *chip)
219 err = lola_codec_read(chip, chip->clock.nid,
220 LOLA_VERB_SET_UNSOLICITED_ENABLE,
221 LOLA_UNSOLICITED_ENABLE | LOLA_UNSOLICITED_TAG,
226 dev_warn(chip->card->dev, "error in enable_clock_events %d\n",
233 int lola_set_clock_index(struct lola *chip, unsigned int idx)
238 err = lola_codec_read(chip, chip->clock.nid,
239 LOLA_VERB_SET_CLOCK_SELECT,
240 chip->clock.idx_lookup[idx],
245 dev_warn(chip->card->dev, "error in set_clock %d\n", res);
251 bool lola_update_ext_clock_freq(struct lola *chip, unsigned int val)
255 /* the current EXTERNAL clock information gets updated by interrupt
256 * with an unsolicited response
260 tag = (val >> LOLA_UNSOL_RESP_TAG_OFFSET) & LOLA_UNSOLICITED_TAG_MASK;
261 if (tag != LOLA_UNSOLICITED_TAG)
264 /* only for current = external clocks */
265 if (chip->clock.sample_clock[chip->clock.cur_index].type !=
266 LOLA_CLOCK_TYPE_INTERNAL) {
267 chip->clock.cur_freq = lola_sample_rate_convert(val & 0x7f);
268 chip->clock.cur_valid = (val & 0x100) != 0;
273 int lola_set_clock(struct lola *chip, int idx)
278 if (idx == chip->clock.cur_index) {
279 /* current clock is allowed */
280 freq = chip->clock.cur_freq;
281 valid = chip->clock.cur_valid;
282 } else if (chip->clock.sample_clock[idx].type ==
283 LOLA_CLOCK_TYPE_INTERNAL) {
284 /* internal clocks allowed */
285 freq = chip->clock.sample_clock[idx].freq;
292 if (!check_gran_clock_compatibility(chip, chip->granularity, freq))
295 if (idx != chip->clock.cur_index) {
296 int err = lola_set_clock_index(chip, idx);
299 /* update new settings */
300 chip->clock.cur_index = idx;
301 chip->clock.cur_freq = freq;
302 chip->clock.cur_valid = true;
307 int lola_set_sample_rate(struct lola *chip, int rate)
311 if (chip->clock.cur_freq == rate && chip->clock.cur_valid)
313 /* search for new dwClockIndex */
314 for (i = 0; i < chip->clock.items; i++) {
315 if (chip->clock.sample_clock[i].type == LOLA_CLOCK_TYPE_INTERNAL &&
316 chip->clock.sample_clock[i].freq == rate)
319 if (i >= chip->clock.items)
321 return lola_set_clock(chip, i);