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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
317 snd_assert(cs8427, return);
318 chip = cs8427->private_data;
319 snd_i2c_lock(cs8427->bus);
Takashi Iwaicc639352006-06-30 15:31:25 +0200320 if ((chip->regmap[CS8427_REG_CLOCKSOURCE] & CS8427_RXDAES3INPUT) ==
321 CS8427_RXDAES3INPUT) /* AES3 bit is set */
Jaroslav Kyselae957ebf2006-02-02 07:56:54 +0100322 aes3input = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 chip->regmap[CS8427_REG_CLOCKSOURCE] &= ~(CS8427_RUN | CS8427_RXDMASK);
Takashi Iwai97f02e02005-11-17 14:17:19 +0100324 snd_cs8427_reg_write(cs8427, CS8427_REG_CLOCKSOURCE,
325 chip->regmap[CS8427_REG_CLOCKSOURCE]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326 udelay(200);
327 chip->regmap[CS8427_REG_CLOCKSOURCE] |= CS8427_RUN | CS8427_RXDILRCK;
Takashi Iwai97f02e02005-11-17 14:17:19 +0100328 snd_cs8427_reg_write(cs8427, CS8427_REG_CLOCKSOURCE,
329 chip->regmap[CS8427_REG_CLOCKSOURCE]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330 udelay(200);
331 snd_i2c_unlock(cs8427->bus);
332 end_time = jiffies + chip->reset_timeout;
333 while (time_after_eq(end_time, jiffies)) {
334 snd_i2c_lock(cs8427->bus);
335 data = snd_cs8427_reg_read(cs8427, CS8427_REG_RECVERRORS);
336 snd_i2c_unlock(cs8427->bus);
337 if (!(data & CS8427_UNLOCK))
338 break;
Nishanth Aravamudan8433a502005-10-24 15:02:37 +0200339 schedule_timeout_uninterruptible(1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340 }
341 snd_i2c_lock(cs8427->bus);
342 chip->regmap[CS8427_REG_CLOCKSOURCE] &= ~CS8427_RXDMASK;
Jaroslav Kyselae957ebf2006-02-02 07:56:54 +0100343 if (aes3input)
344 chip->regmap[CS8427_REG_CLOCKSOURCE] |= CS8427_RXDAES3INPUT;
Takashi Iwai97f02e02005-11-17 14:17:19 +0100345 snd_cs8427_reg_write(cs8427, CS8427_REG_CLOCKSOURCE,
346 chip->regmap[CS8427_REG_CLOCKSOURCE]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347 snd_i2c_unlock(cs8427->bus);
348}
349
Takashi Iwai97f02e02005-11-17 14:17:19 +0100350static int snd_cs8427_in_status_info(struct snd_kcontrol *kcontrol,
351 struct snd_ctl_elem_info *uinfo)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352{
353 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
354 uinfo->count = 1;
355 uinfo->value.integer.min = 0;
356 uinfo->value.integer.max = 255;
357 return 0;
358}
359
Takashi Iwai97f02e02005-11-17 14:17:19 +0100360static int snd_cs8427_in_status_get(struct snd_kcontrol *kcontrol,
361 struct snd_ctl_elem_value *ucontrol)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362{
Takashi Iwai97f02e02005-11-17 14:17:19 +0100363 struct snd_i2c_device *device = snd_kcontrol_chip(kcontrol);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 int data;
365
366 snd_i2c_lock(device->bus);
367 data = snd_cs8427_reg_read(device, kcontrol->private_value);
368 snd_i2c_unlock(device->bus);
369 if (data < 0)
370 return data;
371 ucontrol->value.integer.value[0] = data;
372 return 0;
373}
374
Takashi Iwai97f02e02005-11-17 14:17:19 +0100375static int snd_cs8427_qsubcode_info(struct snd_kcontrol *kcontrol,
376 struct snd_ctl_elem_info *uinfo)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377{
378 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
379 uinfo->count = 10;
380 return 0;
381}
382
Takashi Iwai97f02e02005-11-17 14:17:19 +0100383static int snd_cs8427_qsubcode_get(struct snd_kcontrol *kcontrol,
384 struct snd_ctl_elem_value *ucontrol)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385{
Takashi Iwai97f02e02005-11-17 14:17:19 +0100386 struct snd_i2c_device *device = snd_kcontrol_chip(kcontrol);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387 unsigned char reg = CS8427_REG_QSUBCODE;
388 int err;
389
390 snd_i2c_lock(device->bus);
391 if ((err = snd_i2c_sendbytes(device, &reg, 1)) != 1) {
Takashi Iwaicc639352006-06-30 15:31:25 +0200392 snd_printk(KERN_ERR "unable to send register 0x%x byte "
393 "to CS8427\n", reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394 snd_i2c_unlock(device->bus);
395 return err < 0 ? err : -EIO;
396 }
Takashi Iwaicc639352006-06-30 15:31:25 +0200397 err = snd_i2c_readbytes(device, ucontrol->value.bytes.data, 10);
398 if (err != 10) {
399 snd_printk(KERN_ERR "unable to read Q-subcode bytes "
400 "from CS8427\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401 snd_i2c_unlock(device->bus);
402 return err < 0 ? err : -EIO;
403 }
404 snd_i2c_unlock(device->bus);
405 return 0;
406}
407
Takashi Iwaicc639352006-06-30 15:31:25 +0200408static int snd_cs8427_spdif_info(struct snd_kcontrol *kcontrol,
409 struct snd_ctl_elem_info *uinfo)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410{
411 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
412 uinfo->count = 1;
413 return 0;
414}
415
Takashi Iwai97f02e02005-11-17 14:17:19 +0100416static int snd_cs8427_spdif_get(struct snd_kcontrol *kcontrol,
417 struct snd_ctl_elem_value *ucontrol)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418{
Takashi Iwai97f02e02005-11-17 14:17:19 +0100419 struct snd_i2c_device *device = snd_kcontrol_chip(kcontrol);
420 struct cs8427 *chip = device->private_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421
422 snd_i2c_lock(device->bus);
423 memcpy(ucontrol->value.iec958.status, chip->playback.def_status, 24);
424 snd_i2c_unlock(device->bus);
425 return 0;
426}
427
Takashi Iwai97f02e02005-11-17 14:17:19 +0100428static int snd_cs8427_spdif_put(struct snd_kcontrol *kcontrol,
429 struct snd_ctl_elem_value *ucontrol)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430{
Takashi Iwai97f02e02005-11-17 14:17:19 +0100431 struct snd_i2c_device *device = snd_kcontrol_chip(kcontrol);
432 struct cs8427 *chip = device->private_data;
433 unsigned char *status = kcontrol->private_value ?
434 chip->playback.pcm_status : chip->playback.def_status;
435 struct snd_pcm_runtime *runtime = chip->playback.substream ?
436 chip->playback.substream->runtime : NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 int err, change;
438
439 snd_i2c_lock(device->bus);
440 change = memcmp(ucontrol->value.iec958.status, status, 24) != 0;
441 memcpy(status, ucontrol->value.iec958.status, 24);
Takashi Iwaicc639352006-06-30 15:31:25 +0200442 if (change && (kcontrol->private_value ?
443 runtime != NULL : runtime == NULL)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444 err = snd_cs8427_send_corudata(device, 0, status, 24);
445 if (err < 0)
446 change = err;
447 }
448 snd_i2c_unlock(device->bus);
449 return change;
450}
451
Takashi Iwai97f02e02005-11-17 14:17:19 +0100452static int snd_cs8427_spdif_mask_info(struct snd_kcontrol *kcontrol,
453 struct snd_ctl_elem_info *uinfo)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454{
455 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
456 uinfo->count = 1;
457 return 0;
458}
459
Takashi Iwai97f02e02005-11-17 14:17:19 +0100460static int snd_cs8427_spdif_mask_get(struct snd_kcontrol *kcontrol,
461 struct snd_ctl_elem_value *ucontrol)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462{
463 memset(ucontrol->value.iec958.status, 0xff, 24);
464 return 0;
465}
466
Takashi Iwai97f02e02005-11-17 14:17:19 +0100467static struct snd_kcontrol_new snd_cs8427_iec958_controls[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468{
469 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
470 .info = snd_cs8427_in_status_info,
471 .name = "IEC958 CS8427 Input Status",
Takashi Iwaicc639352006-06-30 15:31:25 +0200472 .access = (SNDRV_CTL_ELEM_ACCESS_READ |
473 SNDRV_CTL_ELEM_ACCESS_VOLATILE),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474 .get = snd_cs8427_in_status_get,
475 .private_value = 15,
476},
477{
478 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
479 .info = snd_cs8427_in_status_info,
480 .name = "IEC958 CS8427 Error Status",
Takashi Iwaicc639352006-06-30 15:31:25 +0200481 .access = (SNDRV_CTL_ELEM_ACCESS_READ |
482 SNDRV_CTL_ELEM_ACCESS_VOLATILE),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483 .get = snd_cs8427_in_status_get,
484 .private_value = 16,
485},
486{
487 .access = SNDRV_CTL_ELEM_ACCESS_READ,
488 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
489 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
490 .info = snd_cs8427_spdif_mask_info,
491 .get = snd_cs8427_spdif_mask_get,
492},
493{
494 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
495 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
496 .info = snd_cs8427_spdif_info,
497 .get = snd_cs8427_spdif_get,
498 .put = snd_cs8427_spdif_put,
499 .private_value = 0
500},
501{
Takashi Iwaicc639352006-06-30 15:31:25 +0200502 .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
503 SNDRV_CTL_ELEM_ACCESS_INACTIVE),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
505 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM),
506 .info = snd_cs8427_spdif_info,
507 .get = snd_cs8427_spdif_get,
508 .put = snd_cs8427_spdif_put,
509 .private_value = 1
510},
511{
512 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
513 .info = snd_cs8427_qsubcode_info,
514 .name = "IEC958 Q-subcode Capture Default",
Takashi Iwaicc639352006-06-30 15:31:25 +0200515 .access = (SNDRV_CTL_ELEM_ACCESS_READ |
516 SNDRV_CTL_ELEM_ACCESS_VOLATILE),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517 .get = snd_cs8427_qsubcode_get
518}};
519
Takashi Iwai97f02e02005-11-17 14:17:19 +0100520int snd_cs8427_iec958_build(struct snd_i2c_device *cs8427,
521 struct snd_pcm_substream *play_substream,
522 struct snd_pcm_substream *cap_substream)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523{
Takashi Iwai97f02e02005-11-17 14:17:19 +0100524 struct cs8427 *chip = cs8427->private_data;
525 struct snd_kcontrol *kctl;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526 unsigned int idx;
527 int err;
528
529 snd_assert(play_substream && cap_substream, return -EINVAL);
530 for (idx = 0; idx < ARRAY_SIZE(snd_cs8427_iec958_controls); idx++) {
531 kctl = snd_ctl_new1(&snd_cs8427_iec958_controls[idx], cs8427);
532 if (kctl == NULL)
533 return -ENOMEM;
534 kctl->id.device = play_substream->pcm->device;
535 kctl->id.subdevice = play_substream->number;
536 err = snd_ctl_add(cs8427->bus->card, kctl);
537 if (err < 0)
538 return err;
Takashi Iwaicc639352006-06-30 15:31:25 +0200539 if (! strcmp(kctl->id.name,
540 SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541 chip->playback.pcm_ctl = kctl;
542 }
543
544 chip->playback.substream = play_substream;
545 chip->capture.substream = cap_substream;
546 snd_assert(chip->playback.pcm_ctl, return -EIO);
547 return 0;
548}
549
Takashi Iwaicc639352006-06-30 15:31:25 +0200550EXPORT_SYMBOL(snd_cs8427_iec958_build);
551
Takashi Iwai97f02e02005-11-17 14:17:19 +0100552int snd_cs8427_iec958_active(struct snd_i2c_device *cs8427, int active)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700553{
Takashi Iwai97f02e02005-11-17 14:17:19 +0100554 struct cs8427 *chip;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555
556 snd_assert(cs8427, return -ENXIO);
557 chip = cs8427->private_data;
558 if (active)
Takashi Iwaicc639352006-06-30 15:31:25 +0200559 memcpy(chip->playback.pcm_status,
560 chip->playback.def_status, 24);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561 chip->playback.pcm_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
Takashi Iwaicc639352006-06-30 15:31:25 +0200562 snd_ctl_notify(cs8427->bus->card,
563 SNDRV_CTL_EVENT_MASK_VALUE | SNDRV_CTL_EVENT_MASK_INFO,
564 &chip->playback.pcm_ctl->id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565 return 0;
566}
567
Takashi Iwaicc639352006-06-30 15:31:25 +0200568EXPORT_SYMBOL(snd_cs8427_iec958_active);
569
Takashi Iwai97f02e02005-11-17 14:17:19 +0100570int snd_cs8427_iec958_pcm(struct snd_i2c_device *cs8427, unsigned int rate)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571{
Takashi Iwai97f02e02005-11-17 14:17:19 +0100572 struct cs8427 *chip;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700573 char *status;
574 int err, reset;
575
576 snd_assert(cs8427, return -ENXIO);
577 chip = cs8427->private_data;
578 status = chip->playback.pcm_status;
579 snd_i2c_lock(cs8427->bus);
580 if (status[0] & IEC958_AES0_PROFESSIONAL) {
581 status[0] &= ~IEC958_AES0_PRO_FS;
582 switch (rate) {
583 case 32000: status[0] |= IEC958_AES0_PRO_FS_32000; break;
584 case 44100: status[0] |= IEC958_AES0_PRO_FS_44100; break;
585 case 48000: status[0] |= IEC958_AES0_PRO_FS_48000; break;
586 default: status[0] |= IEC958_AES0_PRO_FS_NOTID; break;
587 }
588 } else {
589 status[3] &= ~IEC958_AES3_CON_FS;
590 switch (rate) {
591 case 32000: status[3] |= IEC958_AES3_CON_FS_32000; break;
592 case 44100: status[3] |= IEC958_AES3_CON_FS_44100; break;
593 case 48000: status[3] |= IEC958_AES3_CON_FS_48000; break;
594 }
595 }
596 err = snd_cs8427_send_corudata(cs8427, 0, status, 24);
597 if (err > 0)
598 snd_ctl_notify(cs8427->bus->card,
599 SNDRV_CTL_EVENT_MASK_VALUE,
600 &chip->playback.pcm_ctl->id);
601 reset = chip->rate != rate;
602 chip->rate = rate;
603 snd_i2c_unlock(cs8427->bus);
604 if (reset)
605 snd_cs8427_reset(cs8427);
606 return err < 0 ? err : 0;
607}
608
Takashi Iwaicc639352006-06-30 15:31:25 +0200609EXPORT_SYMBOL(snd_cs8427_iec958_pcm);
610
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611static int __init alsa_cs8427_module_init(void)
612{
613 return 0;
614}
615
616static void __exit alsa_cs8427_module_exit(void)
617{
618}
619
620module_init(alsa_cs8427_module_init)
621module_exit(alsa_cs8427_module_exit)