blob: 020a5d5124721a54ef81b2c5b97943580699a19c [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Routines for control of the CS8427 via i2c bus
3 * IEC958 (S/PDIF) receiver & transmitter by Cirrus Logic
Jaroslav Kyselac1017a42007-10-15 09:50:19 +02004 * Copyright (c) by 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 *
21 */
22
Linus Torvalds1da177e2005-04-16 15:20:36 -070023#include <linux/slab.h>
24#include <linux/delay.h>
25#include <linux/init.h>
Harvey Harrison48008b52008-05-08 13:01:32 +020026#include <asm/unaligned.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#include <sound/core.h>
28#include <sound/control.h>
29#include <sound/pcm.h>
30#include <sound/cs8427.h>
31#include <sound/asoundef.h>
32
Takashi Iwai97f02e02005-11-17 14:17:19 +010033static void snd_cs8427_reset(struct snd_i2c_device *cs8427);
Linus Torvalds1da177e2005-04-16 15:20:36 -070034
Jaroslav Kyselac1017a42007-10-15 09:50:19 +020035MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
Linus Torvalds1da177e2005-04-16 15:20:36 -070036MODULE_DESCRIPTION("IEC958 (S/PDIF) receiver & transmitter by Cirrus Logic");
37MODULE_LICENSE("GPL");
38
39#define CS8427_ADDR (0x20>>1) /* fixed address */
40
Takashi Iwai97f02e02005-11-17 14:17:19 +010041struct cs8427_stream {
42 struct snd_pcm_substream *substream;
Linus Torvalds1da177e2005-04-16 15:20:36 -070043 char hw_status[24]; /* hardware status */
44 char def_status[24]; /* default status */
45 char pcm_status[24]; /* PCM private status */
46 char hw_udata[32];
Takashi Iwai97f02e02005-11-17 14:17:19 +010047 struct snd_kcontrol *pcm_ctl;
48};
Linus Torvalds1da177e2005-04-16 15:20:36 -070049
Takashi Iwai97f02e02005-11-17 14:17:19 +010050struct cs8427 {
Linus Torvalds1da177e2005-04-16 15:20:36 -070051 unsigned char regmap[0x14]; /* map of first 1 + 13 registers */
52 unsigned int rate;
53 unsigned int reset_timeout;
Takashi Iwai97f02e02005-11-17 14:17:19 +010054 struct cs8427_stream playback;
55 struct cs8427_stream capture;
56};
Linus Torvalds1da177e2005-04-16 15:20:36 -070057
58static unsigned char swapbits(unsigned char val)
59{
60 int bit;
61 unsigned char res = 0;
62 for (bit = 0; bit < 8; bit++) {
63 res <<= 1;
64 res |= val & 1;
65 val >>= 1;
66 }
67 return res;
68}
69
Takashi Iwai97f02e02005-11-17 14:17:19 +010070int snd_cs8427_reg_write(struct snd_i2c_device *device, unsigned char reg,
71 unsigned char val)
Linus Torvalds1da177e2005-04-16 15:20:36 -070072{
73 int err;
74 unsigned char buf[2];
75
76 buf[0] = reg & 0x7f;
77 buf[1] = val;
78 if ((err = snd_i2c_sendbytes(device, buf, 2)) != 2) {
Takashi Iwaicc639352006-06-30 15:31:25 +020079 snd_printk(KERN_ERR "unable to send bytes 0x%02x:0x%02x "
80 "to CS8427 (%i)\n", buf[0], buf[1], err);
Linus Torvalds1da177e2005-04-16 15:20:36 -070081 return err < 0 ? err : -EIO;
82 }
83 return 0;
84}
85
Takashi Iwaicc639352006-06-30 15:31:25 +020086EXPORT_SYMBOL(snd_cs8427_reg_write);
87
Takashi Iwai97f02e02005-11-17 14:17:19 +010088static int snd_cs8427_reg_read(struct snd_i2c_device *device, unsigned char reg)
Linus Torvalds1da177e2005-04-16 15:20:36 -070089{
90 int err;
91 unsigned char buf;
92
93 if ((err = snd_i2c_sendbytes(device, &reg, 1)) != 1) {
Takashi Iwaicc639352006-06-30 15:31:25 +020094 snd_printk(KERN_ERR "unable to send register 0x%x byte "
95 "to CS8427\n", reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -070096 return err < 0 ? err : -EIO;
97 }
98 if ((err = snd_i2c_readbytes(device, &buf, 1)) != 1) {
Takashi Iwaicc639352006-06-30 15:31:25 +020099 snd_printk(KERN_ERR "unable to read register 0x%x byte "
100 "from CS8427\n", reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101 return err < 0 ? err : -EIO;
102 }
103 return buf;
104}
105
Takashi Iwai97f02e02005-11-17 14:17:19 +0100106static int snd_cs8427_select_corudata(struct snd_i2c_device *device, int udata)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107{
Takashi Iwai97f02e02005-11-17 14:17:19 +0100108 struct cs8427 *chip = device->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109 int err;
110
111 udata = udata ? CS8427_BSEL : 0;
112 if (udata != (chip->regmap[CS8427_REG_CSDATABUF] & udata)) {
113 chip->regmap[CS8427_REG_CSDATABUF] &= ~CS8427_BSEL;
114 chip->regmap[CS8427_REG_CSDATABUF] |= udata;
Takashi Iwai97f02e02005-11-17 14:17:19 +0100115 err = snd_cs8427_reg_write(device, CS8427_REG_CSDATABUF,
116 chip->regmap[CS8427_REG_CSDATABUF]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117 if (err < 0)
118 return err;
119 }
120 return 0;
121}
122
Takashi Iwai97f02e02005-11-17 14:17:19 +0100123static int snd_cs8427_send_corudata(struct snd_i2c_device *device,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124 int udata,
125 unsigned char *ndata,
126 int count)
127{
Takashi Iwai97f02e02005-11-17 14:17:19 +0100128 struct cs8427 *chip = device->private_data;
Takashi Iwaicc639352006-06-30 15:31:25 +0200129 char *hw_data = udata ?
130 chip->playback.hw_udata : chip->playback.hw_status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131 char data[32];
132 int err, idx;
133
134 if (!memcmp(hw_data, ndata, count))
135 return 0;
136 if ((err = snd_cs8427_select_corudata(device, udata)) < 0)
137 return err;
138 memcpy(hw_data, ndata, count);
139 if (udata) {
140 memset(data, 0, sizeof(data));
141 if (memcmp(hw_data, data, count) == 0) {
142 chip->regmap[CS8427_REG_UDATABUF] &= ~CS8427_UBMMASK;
Takashi Iwaicc639352006-06-30 15:31:25 +0200143 chip->regmap[CS8427_REG_UDATABUF] |= CS8427_UBMZEROS |
144 CS8427_EFTUI;
145 err = snd_cs8427_reg_write(device, CS8427_REG_UDATABUF,
146 chip->regmap[CS8427_REG_UDATABUF]);
147 return err < 0 ? err : 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 }
149 }
150 data[0] = CS8427_REG_AUTOINC | CS8427_REG_CORU_DATABUF;
151 for (idx = 0; idx < count; idx++)
152 data[idx + 1] = swapbits(ndata[idx]);
153 if (snd_i2c_sendbytes(device, data, count + 1) != count + 1)
154 return -EIO;
155 return 1;
156}
157
Takashi Iwai97f02e02005-11-17 14:17:19 +0100158static void snd_cs8427_free(struct snd_i2c_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159{
160 kfree(device->private_data);
161}
162
Takashi Iwai97f02e02005-11-17 14:17:19 +0100163int snd_cs8427_create(struct snd_i2c_bus *bus,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164 unsigned char addr,
165 unsigned int reset_timeout,
Takashi Iwai97f02e02005-11-17 14:17:19 +0100166 struct snd_i2c_device **r_cs8427)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167{
168 static unsigned char initvals1[] = {
169 CS8427_REG_CONTROL1 | CS8427_REG_AUTOINC,
Takashi Iwaicc639352006-06-30 15:31:25 +0200170 /* CS8427_REG_CONTROL1: RMCK to OMCK, valid PCM audio, disable mutes,
171 TCBL=output */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172 CS8427_SWCLK | CS8427_TCBLDIR,
Takashi Iwaicc639352006-06-30 15:31:25 +0200173 /* CS8427_REG_CONTROL2: hold last valid audio sample, RMCK=256*Fs,
174 normal stereo operation */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175 0x00,
Takashi Iwaicc639352006-06-30 15:31:25 +0200176 /* CS8427_REG_DATAFLOW: output drivers normal operation, Tx<=serial,
177 Rx=>serial */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178 CS8427_TXDSERIAL | CS8427_SPDAES3RECEIVER,
Takashi Iwaicc639352006-06-30 15:31:25 +0200179 /* CS8427_REG_CLOCKSOURCE: Run off, CMCK=256*Fs,
180 output time base = OMCK, input time base = recovered input clock,
181 recovered input clock source is ILRCK changed to AES3INPUT
182 (workaround, see snd_cs8427_reset) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183 CS8427_RXDILRCK,
Takashi Iwaicc639352006-06-30 15:31:25 +0200184 /* CS8427_REG_SERIALINPUT: Serial audio input port data format = I2S,
185 24-bit, 64*Fsi */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186 CS8427_SIDEL | CS8427_SILRPOL,
Takashi Iwaicc639352006-06-30 15:31:25 +0200187 /* CS8427_REG_SERIALOUTPUT: Serial audio output port data format
188 = I2S, 24-bit, 64*Fsi */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189 CS8427_SODEL | CS8427_SOLRPOL,
190 };
191 static unsigned char initvals2[] = {
192 CS8427_REG_RECVERRMASK | CS8427_REG_AUTOINC,
Takashi Iwaicc639352006-06-30 15:31:25 +0200193 /* CS8427_REG_RECVERRMASK: unmask the input PLL clock, V, confidence,
194 biphase, parity status bits */
195 /* CS8427_UNLOCK | CS8427_V | CS8427_CONF | CS8427_BIP | CS8427_PAR,*/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 0xff, /* set everything */
197 /* CS8427_REG_CSDATABUF:
198 Registers 32-55 window to CS buffer
199 Inhibit D->E transfers from overwriting first 5 bytes of CS data.
200 Inhibit D->E transfers (all) of CS data.
201 Allow E->F transfer of CS data.
202 One byte mode; both A/B channels get same written CB data.
203 A channel info is output to chip's EMPH* pin. */
204 CS8427_CBMR | CS8427_DETCI,
205 /* CS8427_REG_UDATABUF:
206 Use internal buffer to transmit User (U) data.
207 Chip's U pin is an output.
208 Transmit all O's for user data.
209 Inhibit D->E transfers.
210 Inhibit E->F transfers. */
211 CS8427_UD | CS8427_EFTUI | CS8427_DETUI,
212 };
213 int err;
Takashi Iwai97f02e02005-11-17 14:17:19 +0100214 struct cs8427 *chip;
215 struct snd_i2c_device *device;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216 unsigned char buf[24];
217
Takashi Iwaicc639352006-06-30 15:31:25 +0200218 if ((err = snd_i2c_device_create(bus, "CS8427",
219 CS8427_ADDR | (addr & 7),
Takashi Iwai97f02e02005-11-17 14:17:19 +0100220 &device)) < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221 return err;
Takashi Iwai561b2202005-09-09 14:22:34 +0200222 chip = device->private_data = kzalloc(sizeof(*chip), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223 if (chip == NULL) {
224 snd_i2c_device_free(device);
225 return -ENOMEM;
226 }
227 device->private_free = snd_cs8427_free;
228
229 snd_i2c_lock(bus);
Takashi Iwaicc639352006-06-30 15:31:25 +0200230 err = snd_cs8427_reg_read(device, CS8427_REG_ID_AND_VER);
231 if (err != CS8427_VER8427A) {
Takashi Iwai4eb45502007-09-20 17:34:57 +0200232 /* give second chance */
233 snd_printk(KERN_WARNING "invalid CS8427 signature 0x%x: "
234 "let me try again...\n", err);
235 err = snd_cs8427_reg_read(device, CS8427_REG_ID_AND_VER);
236 }
237 if (err != CS8427_VER8427A) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 snd_i2c_unlock(bus);
Takashi Iwai97f02e02005-11-17 14:17:19 +0100239 snd_printk(KERN_ERR "unable to find CS8427 signature "
240 "(expected 0x%x, read 0x%x),\n",
241 CS8427_VER8427A, err);
242 snd_printk(KERN_ERR " initialization is not completed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243 return -EFAULT;
244 }
245 /* turn off run bit while making changes to configuration */
Takashi Iwaicc639352006-06-30 15:31:25 +0200246 err = snd_cs8427_reg_write(device, CS8427_REG_CLOCKSOURCE, 0x00);
247 if (err < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248 goto __fail;
249 /* send initial values */
250 memcpy(chip->regmap + (initvals1[0] & 0x7f), initvals1 + 1, 6);
251 if ((err = snd_i2c_sendbytes(device, initvals1, 7)) != 7) {
252 err = err < 0 ? err : -EIO;
253 goto __fail;
254 }
255 /* Turn off CS8427 interrupt stuff that is not used in hardware */
256 memset(buf, 0, 7);
257 /* from address 9 to 15 */
258 buf[0] = 9; /* register */
259 if ((err = snd_i2c_sendbytes(device, buf, 7)) != 7)
260 goto __fail;
261 /* send transfer initialization sequence */
262 memcpy(chip->regmap + (initvals2[0] & 0x7f), initvals2 + 1, 3);
263 if ((err = snd_i2c_sendbytes(device, initvals2, 4)) != 4) {
264 err = err < 0 ? err : -EIO;
265 goto __fail;
266 }
267 /* write default channel status bytes */
Harvey Harrison48008b52008-05-08 13:01:32 +0200268 put_unaligned_le32(SNDRV_PCM_DEFAULT_CON_SPDIF, buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 memset(buf + 4, 0, 24 - 4);
270 if (snd_cs8427_send_corudata(device, 0, buf, 24) < 0)
271 goto __fail;
272 memcpy(chip->playback.def_status, buf, 24);
273 memcpy(chip->playback.pcm_status, buf, 24);
274 snd_i2c_unlock(bus);
275
276 /* turn on run bit and rock'n'roll */
277 if (reset_timeout < 1)
278 reset_timeout = 1;
279 chip->reset_timeout = reset_timeout;
280 snd_cs8427_reset(device);
281
282#if 0 // it's nice for read tests
283 {
284 char buf[128];
285 int xx;
286 buf[0] = 0x81;
287 snd_i2c_sendbytes(device, buf, 1);
288 snd_i2c_readbytes(device, buf, 127);
289 for (xx = 0; xx < 127; xx++)
Takashi Iwai99b359b2005-10-20 18:26:44 +0200290 printk(KERN_DEBUG "reg[0x%x] = 0x%x\n", xx+1, buf[xx]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291 }
292#endif
293
294 if (r_cs8427)
295 *r_cs8427 = device;
296 return 0;
297
298 __fail:
299 snd_i2c_unlock(bus);
300 snd_i2c_device_free(device);
301 return err < 0 ? err : -EIO;
302}
303
Takashi Iwaicc639352006-06-30 15:31:25 +0200304EXPORT_SYMBOL(snd_cs8427_create);
305
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306/*
307 * Reset the chip using run bit, also lock PLL using ILRCK and
308 * put back AES3INPUT. This workaround is described in latest
309 * CS8427 datasheet, otherwise TXDSERIAL will not work.
310 */
Takashi Iwai97f02e02005-11-17 14:17:19 +0100311static void snd_cs8427_reset(struct snd_i2c_device *cs8427)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312{
Takashi Iwai97f02e02005-11-17 14:17:19 +0100313 struct cs8427 *chip;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314 unsigned long end_time;
Jaroslav Kyselae957ebf2006-02-02 07:56:54 +0100315 int data, aes3input = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316
Takashi Iwai5e246b82008-08-08 17:12:47 +0200317 if (snd_BUG_ON(!cs8427))
318 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319 chip = cs8427->private_data;
320 snd_i2c_lock(cs8427->bus);
Takashi Iwaicc639352006-06-30 15:31:25 +0200321 if ((chip->regmap[CS8427_REG_CLOCKSOURCE] & CS8427_RXDAES3INPUT) ==
322 CS8427_RXDAES3INPUT) /* AES3 bit is set */
Jaroslav Kyselae957ebf2006-02-02 07:56:54 +0100323 aes3input = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 chip->regmap[CS8427_REG_CLOCKSOURCE] &= ~(CS8427_RUN | CS8427_RXDMASK);
Takashi Iwai97f02e02005-11-17 14:17:19 +0100325 snd_cs8427_reg_write(cs8427, CS8427_REG_CLOCKSOURCE,
326 chip->regmap[CS8427_REG_CLOCKSOURCE]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327 udelay(200);
328 chip->regmap[CS8427_REG_CLOCKSOURCE] |= CS8427_RUN | CS8427_RXDILRCK;
Takashi Iwai97f02e02005-11-17 14:17:19 +0100329 snd_cs8427_reg_write(cs8427, CS8427_REG_CLOCKSOURCE,
330 chip->regmap[CS8427_REG_CLOCKSOURCE]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331 udelay(200);
332 snd_i2c_unlock(cs8427->bus);
333 end_time = jiffies + chip->reset_timeout;
334 while (time_after_eq(end_time, jiffies)) {
335 snd_i2c_lock(cs8427->bus);
336 data = snd_cs8427_reg_read(cs8427, CS8427_REG_RECVERRORS);
337 snd_i2c_unlock(cs8427->bus);
338 if (!(data & CS8427_UNLOCK))
339 break;
Nishanth Aravamudan8433a502005-10-24 15:02:37 +0200340 schedule_timeout_uninterruptible(1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341 }
342 snd_i2c_lock(cs8427->bus);
343 chip->regmap[CS8427_REG_CLOCKSOURCE] &= ~CS8427_RXDMASK;
Jaroslav Kyselae957ebf2006-02-02 07:56:54 +0100344 if (aes3input)
345 chip->regmap[CS8427_REG_CLOCKSOURCE] |= CS8427_RXDAES3INPUT;
Takashi Iwai97f02e02005-11-17 14:17:19 +0100346 snd_cs8427_reg_write(cs8427, CS8427_REG_CLOCKSOURCE,
347 chip->regmap[CS8427_REG_CLOCKSOURCE]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348 snd_i2c_unlock(cs8427->bus);
349}
350
Takashi Iwai97f02e02005-11-17 14:17:19 +0100351static int snd_cs8427_in_status_info(struct snd_kcontrol *kcontrol,
352 struct snd_ctl_elem_info *uinfo)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353{
354 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
355 uinfo->count = 1;
356 uinfo->value.integer.min = 0;
357 uinfo->value.integer.max = 255;
358 return 0;
359}
360
Takashi Iwai97f02e02005-11-17 14:17:19 +0100361static int snd_cs8427_in_status_get(struct snd_kcontrol *kcontrol,
362 struct snd_ctl_elem_value *ucontrol)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363{
Takashi Iwai97f02e02005-11-17 14:17:19 +0100364 struct snd_i2c_device *device = snd_kcontrol_chip(kcontrol);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 int data;
366
367 snd_i2c_lock(device->bus);
368 data = snd_cs8427_reg_read(device, kcontrol->private_value);
369 snd_i2c_unlock(device->bus);
370 if (data < 0)
371 return data;
372 ucontrol->value.integer.value[0] = data;
373 return 0;
374}
375
Takashi Iwai97f02e02005-11-17 14:17:19 +0100376static int snd_cs8427_qsubcode_info(struct snd_kcontrol *kcontrol,
377 struct snd_ctl_elem_info *uinfo)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378{
379 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
380 uinfo->count = 10;
381 return 0;
382}
383
Takashi Iwai97f02e02005-11-17 14:17:19 +0100384static int snd_cs8427_qsubcode_get(struct snd_kcontrol *kcontrol,
385 struct snd_ctl_elem_value *ucontrol)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386{
Takashi Iwai97f02e02005-11-17 14:17:19 +0100387 struct snd_i2c_device *device = snd_kcontrol_chip(kcontrol);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388 unsigned char reg = CS8427_REG_QSUBCODE;
389 int err;
390
391 snd_i2c_lock(device->bus);
392 if ((err = snd_i2c_sendbytes(device, &reg, 1)) != 1) {
Takashi Iwaicc639352006-06-30 15:31:25 +0200393 snd_printk(KERN_ERR "unable to send register 0x%x byte "
394 "to CS8427\n", reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395 snd_i2c_unlock(device->bus);
396 return err < 0 ? err : -EIO;
397 }
Takashi Iwaicc639352006-06-30 15:31:25 +0200398 err = snd_i2c_readbytes(device, ucontrol->value.bytes.data, 10);
399 if (err != 10) {
400 snd_printk(KERN_ERR "unable to read Q-subcode bytes "
401 "from CS8427\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402 snd_i2c_unlock(device->bus);
403 return err < 0 ? err : -EIO;
404 }
405 snd_i2c_unlock(device->bus);
406 return 0;
407}
408
Takashi Iwaicc639352006-06-30 15:31:25 +0200409static int snd_cs8427_spdif_info(struct snd_kcontrol *kcontrol,
410 struct snd_ctl_elem_info *uinfo)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411{
412 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
413 uinfo->count = 1;
414 return 0;
415}
416
Takashi Iwai97f02e02005-11-17 14:17:19 +0100417static int snd_cs8427_spdif_get(struct snd_kcontrol *kcontrol,
418 struct snd_ctl_elem_value *ucontrol)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419{
Takashi Iwai97f02e02005-11-17 14:17:19 +0100420 struct snd_i2c_device *device = snd_kcontrol_chip(kcontrol);
421 struct cs8427 *chip = device->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422
423 snd_i2c_lock(device->bus);
424 memcpy(ucontrol->value.iec958.status, chip->playback.def_status, 24);
425 snd_i2c_unlock(device->bus);
426 return 0;
427}
428
Takashi Iwai97f02e02005-11-17 14:17:19 +0100429static int snd_cs8427_spdif_put(struct snd_kcontrol *kcontrol,
430 struct snd_ctl_elem_value *ucontrol)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431{
Takashi Iwai97f02e02005-11-17 14:17:19 +0100432 struct snd_i2c_device *device = snd_kcontrol_chip(kcontrol);
433 struct cs8427 *chip = device->private_data;
434 unsigned char *status = kcontrol->private_value ?
435 chip->playback.pcm_status : chip->playback.def_status;
436 struct snd_pcm_runtime *runtime = chip->playback.substream ?
437 chip->playback.substream->runtime : NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438 int err, change;
439
440 snd_i2c_lock(device->bus);
441 change = memcmp(ucontrol->value.iec958.status, status, 24) != 0;
442 memcpy(status, ucontrol->value.iec958.status, 24);
Takashi Iwaicc639352006-06-30 15:31:25 +0200443 if (change && (kcontrol->private_value ?
444 runtime != NULL : runtime == NULL)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445 err = snd_cs8427_send_corudata(device, 0, status, 24);
446 if (err < 0)
447 change = err;
448 }
449 snd_i2c_unlock(device->bus);
450 return change;
451}
452
Takashi Iwai97f02e02005-11-17 14:17:19 +0100453static int snd_cs8427_spdif_mask_info(struct snd_kcontrol *kcontrol,
454 struct snd_ctl_elem_info *uinfo)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455{
456 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
457 uinfo->count = 1;
458 return 0;
459}
460
Takashi Iwai97f02e02005-11-17 14:17:19 +0100461static int snd_cs8427_spdif_mask_get(struct snd_kcontrol *kcontrol,
462 struct snd_ctl_elem_value *ucontrol)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463{
464 memset(ucontrol->value.iec958.status, 0xff, 24);
465 return 0;
466}
467
Takashi Iwai97f02e02005-11-17 14:17:19 +0100468static struct snd_kcontrol_new snd_cs8427_iec958_controls[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469{
470 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
471 .info = snd_cs8427_in_status_info,
472 .name = "IEC958 CS8427 Input Status",
Takashi Iwaicc639352006-06-30 15:31:25 +0200473 .access = (SNDRV_CTL_ELEM_ACCESS_READ |
474 SNDRV_CTL_ELEM_ACCESS_VOLATILE),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475 .get = snd_cs8427_in_status_get,
476 .private_value = 15,
477},
478{
479 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
480 .info = snd_cs8427_in_status_info,
481 .name = "IEC958 CS8427 Error Status",
Takashi Iwaicc639352006-06-30 15:31:25 +0200482 .access = (SNDRV_CTL_ELEM_ACCESS_READ |
483 SNDRV_CTL_ELEM_ACCESS_VOLATILE),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484 .get = snd_cs8427_in_status_get,
485 .private_value = 16,
486},
487{
488 .access = SNDRV_CTL_ELEM_ACCESS_READ,
489 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
490 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
491 .info = snd_cs8427_spdif_mask_info,
492 .get = snd_cs8427_spdif_mask_get,
493},
494{
495 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
496 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
497 .info = snd_cs8427_spdif_info,
498 .get = snd_cs8427_spdif_get,
499 .put = snd_cs8427_spdif_put,
500 .private_value = 0
501},
502{
Takashi Iwaicc639352006-06-30 15:31:25 +0200503 .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
504 SNDRV_CTL_ELEM_ACCESS_INACTIVE),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
506 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM),
507 .info = snd_cs8427_spdif_info,
508 .get = snd_cs8427_spdif_get,
509 .put = snd_cs8427_spdif_put,
510 .private_value = 1
511},
512{
513 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
514 .info = snd_cs8427_qsubcode_info,
515 .name = "IEC958 Q-subcode Capture Default",
Takashi Iwaicc639352006-06-30 15:31:25 +0200516 .access = (SNDRV_CTL_ELEM_ACCESS_READ |
517 SNDRV_CTL_ELEM_ACCESS_VOLATILE),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 .get = snd_cs8427_qsubcode_get
519}};
520
Takashi Iwai97f02e02005-11-17 14:17:19 +0100521int snd_cs8427_iec958_build(struct snd_i2c_device *cs8427,
522 struct snd_pcm_substream *play_substream,
523 struct snd_pcm_substream *cap_substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524{
Takashi Iwai97f02e02005-11-17 14:17:19 +0100525 struct cs8427 *chip = cs8427->private_data;
526 struct snd_kcontrol *kctl;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527 unsigned int idx;
528 int err;
529
Takashi Iwai5e246b82008-08-08 17:12:47 +0200530 if (snd_BUG_ON(!play_substream || !cap_substream))
531 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700532 for (idx = 0; idx < ARRAY_SIZE(snd_cs8427_iec958_controls); idx++) {
533 kctl = snd_ctl_new1(&snd_cs8427_iec958_controls[idx], cs8427);
534 if (kctl == NULL)
535 return -ENOMEM;
536 kctl->id.device = play_substream->pcm->device;
537 kctl->id.subdevice = play_substream->number;
538 err = snd_ctl_add(cs8427->bus->card, kctl);
539 if (err < 0)
540 return err;
Takashi Iwaicc639352006-06-30 15:31:25 +0200541 if (! strcmp(kctl->id.name,
542 SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543 chip->playback.pcm_ctl = kctl;
544 }
545
546 chip->playback.substream = play_substream;
547 chip->capture.substream = cap_substream;
Takashi Iwai5e246b82008-08-08 17:12:47 +0200548 if (snd_BUG_ON(!chip->playback.pcm_ctl))
549 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550 return 0;
551}
552
Takashi Iwaicc639352006-06-30 15:31:25 +0200553EXPORT_SYMBOL(snd_cs8427_iec958_build);
554
Takashi Iwai97f02e02005-11-17 14:17:19 +0100555int snd_cs8427_iec958_active(struct snd_i2c_device *cs8427, int active)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556{
Takashi Iwai97f02e02005-11-17 14:17:19 +0100557 struct cs8427 *chip;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558
Takashi Iwai5e246b82008-08-08 17:12:47 +0200559 if (snd_BUG_ON(!cs8427))
560 return -ENXIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561 chip = cs8427->private_data;
562 if (active)
Takashi Iwaicc639352006-06-30 15:31:25 +0200563 memcpy(chip->playback.pcm_status,
564 chip->playback.def_status, 24);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565 chip->playback.pcm_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
Takashi Iwaicc639352006-06-30 15:31:25 +0200566 snd_ctl_notify(cs8427->bus->card,
567 SNDRV_CTL_EVENT_MASK_VALUE | SNDRV_CTL_EVENT_MASK_INFO,
568 &chip->playback.pcm_ctl->id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569 return 0;
570}
571
Takashi Iwaicc639352006-06-30 15:31:25 +0200572EXPORT_SYMBOL(snd_cs8427_iec958_active);
573
Takashi Iwai97f02e02005-11-17 14:17:19 +0100574int snd_cs8427_iec958_pcm(struct snd_i2c_device *cs8427, unsigned int rate)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575{
Takashi Iwai97f02e02005-11-17 14:17:19 +0100576 struct cs8427 *chip;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577 char *status;
578 int err, reset;
579
Takashi Iwai5e246b82008-08-08 17:12:47 +0200580 if (snd_BUG_ON(!cs8427))
581 return -ENXIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700582 chip = cs8427->private_data;
583 status = chip->playback.pcm_status;
584 snd_i2c_lock(cs8427->bus);
585 if (status[0] & IEC958_AES0_PROFESSIONAL) {
586 status[0] &= ~IEC958_AES0_PRO_FS;
587 switch (rate) {
588 case 32000: status[0] |= IEC958_AES0_PRO_FS_32000; break;
589 case 44100: status[0] |= IEC958_AES0_PRO_FS_44100; break;
590 case 48000: status[0] |= IEC958_AES0_PRO_FS_48000; break;
591 default: status[0] |= IEC958_AES0_PRO_FS_NOTID; break;
592 }
593 } else {
594 status[3] &= ~IEC958_AES3_CON_FS;
595 switch (rate) {
596 case 32000: status[3] |= IEC958_AES3_CON_FS_32000; break;
597 case 44100: status[3] |= IEC958_AES3_CON_FS_44100; break;
598 case 48000: status[3] |= IEC958_AES3_CON_FS_48000; break;
599 }
600 }
601 err = snd_cs8427_send_corudata(cs8427, 0, status, 24);
602 if (err > 0)
603 snd_ctl_notify(cs8427->bus->card,
604 SNDRV_CTL_EVENT_MASK_VALUE,
605 &chip->playback.pcm_ctl->id);
606 reset = chip->rate != rate;
607 chip->rate = rate;
608 snd_i2c_unlock(cs8427->bus);
609 if (reset)
610 snd_cs8427_reset(cs8427);
611 return err < 0 ? err : 0;
612}
613
Takashi Iwaicc639352006-06-30 15:31:25 +0200614EXPORT_SYMBOL(snd_cs8427_iec958_pcm);
615
Linus Torvalds1da177e2005-04-16 15:20:36 -0700616static int __init alsa_cs8427_module_init(void)
617{
618 return 0;
619}
620
621static void __exit alsa_cs8427_module_exit(void)
622{
623}
624
625module_init(alsa_cs8427_module_init)
626module_exit(alsa_cs8427_module_exit)