static int cs8427_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct cs8427 *chip = dev_get_drvdata(dai->codec->dev); if (chip == NULL) { pr_err("invalid device private data\n"); return -ENODEV; } snd_cs8427_reset(chip); dev_dbg(&chip->client->dev, "%s(): substream = %s stream = %d\n" , __func__, substream->name, substream->stream); return 0; }
static int cs8427_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct cs8427 *chip = dev_get_drvdata(dai->codec->dev); if (chip == NULL) { pr_err("invalid device private data\n"); return -ENODEV; } /* * we need to make the pll lock for the I2S tranfers * reset the cs8427 chip for this. */ snd_cs8427_reset(chip); dev_dbg(&chip->client->dev, "%s(): substream = %s stream = %d\n" , __func__, substream->name, substream->stream); return 0; }
int snd_cs8427_iec958_pcm(struct snd_i2c_device *cs8427, unsigned int rate) { struct cs8427 *chip; char *status; int err, reset; if (snd_BUG_ON(!cs8427)) return -ENXIO; chip = cs8427->private_data; status = chip->playback.pcm_status; snd_i2c_lock(cs8427->bus); if (status[0] & IEC958_AES0_PROFESSIONAL) { status[0] &= ~IEC958_AES0_PRO_FS; switch (rate) { case 32000: status[0] |= IEC958_AES0_PRO_FS_32000; break; case 44100: status[0] |= IEC958_AES0_PRO_FS_44100; break; case 48000: status[0] |= IEC958_AES0_PRO_FS_48000; break; default: status[0] |= IEC958_AES0_PRO_FS_NOTID; break; } } else { status[3] &= ~IEC958_AES3_CON_FS; switch (rate) { case 32000: status[3] |= IEC958_AES3_CON_FS_32000; break; case 44100: status[3] |= IEC958_AES3_CON_FS_44100; break; case 48000: status[3] |= IEC958_AES3_CON_FS_48000; break; } } err = snd_cs8427_send_corudata(cs8427, 0, status, 24); if (err > 0) snd_ctl_notify(cs8427->bus->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->playback.pcm_ctl->id); reset = chip->rate != rate; chip->rate = rate; snd_i2c_unlock(cs8427->bus); if (reset) snd_cs8427_reset(cs8427); return err < 0 ? err : 0; }
static __devinit int cs8427_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id) { static unsigned char initvals1[] = { CS8427_REG_CONTROL1 | CS8427_REG_AUTOINC, /* CS8427_REG_CONTROL1: RMCK to OMCK, valid PCM audio, disable mutes, * TCBL=output */ CS8427_SWCLK | CS8427_TCBLDIR, /* CS8427_REG_CONTROL2: hold last valid audio sample, RMCK=256*Fs, * normal stereo operation */ 0x08, /* CS8427_REG_DATAFLOW: * AES3 Transmitter data source => Serial Audio input port * Serial audio output port data source => reserved */ CS8427_TXDSERIAL, /* CS8427_REG_CLOCKSOURCE: Run off, CMCK=256*Fs, * output time base = OMCK, input time base = recovered input clock, * recovered input clock source is ILRCK changed to AES3INPUT * (workaround, see snd_cs8427_reset) */ CS8427_RXDILRCK | CS8427_OUTC, /* CS8427_REG_SERIALINPUT: Serial audio input port data format = I2S, * 24-bit, 64*Fsi */ CS8427_SIDEL | CS8427_SILRPOL | CS8427_SORES16, /* CS8427_REG_SERIALOUTPUT: Serial audio output port data format * = I2S, 24-bit, 64*Fsi */ CS8427_SODEL | CS8427_SOLRPOL | CS8427_SIRES16, }; static unsigned char initvals2[] = { CS8427_REG_RECVERRMASK | CS8427_REG_AUTOINC, /* CS8427_REG_RECVERRMASK: unmask the input PLL clock, V, confidence, * biphase, parity status bits * CS8427_UNLOCK | CS8427_V | CS8427_CONF | CS8427_BIP | CS8427_PAR, */ 0xff, /* set everything */ /* CS8427_REG_CSDATABUF: * Registers 32-55 window to CS buffer * Inhibit D->E transfers from overwriting first 5 bytes of CS data. * Inhibit D->E transfers (all) of CS data. * Allow E->F transfer of CS data. * One byte mode; both A/B channels get same written CB data. * A channel info is output to chip's EMPH* pin. */ CS8427_CBMR | CS8427_DETCI, /* CS8427_REG_UDATABUF: * Use internal buffer to transmit User (U) data. * Chip's U pin is an output. * Transmit all O's for user data. * Inhibit D->E transfers. * Inhibit E->F transfers. */ CS8427_UD | CS8427_EFTUI | CS8427_DETUI, }; int err; unsigned char buf[CHANNEL_STATUS_SIZE]; unsigned char val = 0; char addr = 0; unsigned int reset_timeout = 1; int ret = 0; struct cs8427 *chip; if (!client) { pr_err("%s: invalid device info\n", __func__); return -EINVAL; } chip = kzalloc(sizeof(struct cs8427), GFP_KERNEL); if (chip == NULL) { dev_err(&client->dev, "%s: error, allocation failed\n", __func__); return -ENOMEM; } chip->client = client; dev_set_drvdata(&chip->client->dev, chip); ret = poweron_cs8427(chip); if (ret) { dev_err(&chip->client->dev, "failed to bring chip out of reset\n"); return -ENODEV; } err = cs8427_i2c_read(chip, CS8427_REG_ID_AND_VER, 1, &val); if (err < 0) { /* give second chance */ dev_err(&chip->client->dev, "failed to read cs8427 trying once again\n"); err = cs8427_i2c_read(chip, CS8427_REG_ID_AND_VER, 1, &val); if (err < 0) { dev_err(&chip->client->dev, "failed to read version number\n"); return -ENODEV; } dev_dbg(&chip->client->dev, "version number read = %x\n", val); } if (val != CS8427_VER8427A) { dev_err(&chip->client->dev, "unable to find CS8427 signature " "(expected 0x%x, read 0x%x),\n", CS8427_VER8427A, val); dev_err(&chip->client->dev, " initialization is not completed\n"); return -EFAULT; } val = 0; /* turn off run bit while making changes to configuration */ err = cs8427_i2c_write(chip, CS8427_REG_CLOCKSOURCE, 1, &val); if (err < 0) goto __fail; /* send initial values */ memcpy(chip->regmap + (initvals1[0] & 0x7f), initvals1 + 1, 6); addr = 1; err = cs8427_i2c_sendbytes(chip, &addr, &initvals1[1], 6); if (err != 6) { err = err < 0 ? err : -EIO; goto __fail; } /* Turn off CS8427 interrupt stuff that is not used in hardware */ memset(buf, 0, 7); /* from address 9 to 15 */ addr = 9; err = cs8427_i2c_sendbytes(chip, &addr, buf, 7); if (err != 7) goto __fail; /* send transfer initialization sequence */ addr = 0x11; memcpy(chip->regmap + (initvals2[0] & 0x7f), initvals2 + 1, 3); err = cs8427_i2c_sendbytes(chip, &addr, &initvals2[1], 3); if (err != 3) { err = err < 0 ? err : -EIO; goto __fail; } /* write default channel status bytes */ put_unaligned_le32(SNDRV_PCM_DEFAULT_CON_SPDIF, buf); memset(buf + 4, 0, CHANNEL_STATUS_SIZE - 4); if (snd_cs8427_send_corudata(chip, 0, buf, CHANNEL_STATUS_SIZE) < 0) goto __fail; memcpy(chip->playback.def_status, buf, CHANNEL_STATUS_SIZE); memcpy(chip->playback.pcm_status, buf, CHANNEL_STATUS_SIZE); /* turn on run bit and rock'n'roll */ if (reset_timeout < 1) reset_timeout = 1; chip->reset_timeout = reset_timeout; snd_cs8427_reset(chip); ret = snd_soc_register_codec(&chip->client->dev, &soc_codec_dev_cs8427, cs8427_dai, ARRAY_SIZE(cs8427_dai)); return 0; __fail: kfree(chip); return err < 0 ? err : -EIO; }
static __devinit int cs8427_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id) { static unsigned char initvals1[] = { CS8427_REG_CONTROL1 | CS8427_REG_AUTOINC, CS8427_SWCLK | CS8427_TCBLDIR, 0x08, CS8427_TXDSERIAL, CS8427_RXDILRCK | CS8427_OUTC, CS8427_SIDEL | CS8427_SILRPOL | CS8427_SORES16, CS8427_SODEL | CS8427_SOLRPOL | CS8427_SIRES16, }; static unsigned char initvals2[] = { CS8427_REG_RECVERRMASK | CS8427_REG_AUTOINC, 0xff, /* CS8427_REG_CSDATABUF: * Registers 32-55 window to CS buffer * Inhibit D->E transfers from overwriting first 5 bytes of CS data. * Inhibit D->E transfers (all) of CS data. * Allow E->F transfer of CS data. * One byte mode; both A/B channels get same written CB data. * A channel info is output to chip's EMPH* pin. */ CS8427_CBMR | CS8427_DETCI, CS8427_UD | CS8427_EFTUI | CS8427_DETUI, }; int err; unsigned char buf[CHANNEL_STATUS_SIZE]; unsigned char val = 0; char addr = 0; unsigned int reset_timeout = 100; int ret = 0; struct cs8427 *chip; if (!client) { pr_err("%s: invalid device info\n", __func__); return -EINVAL; } chip = kzalloc(sizeof(struct cs8427), GFP_KERNEL); if (chip == NULL) { dev_err(&client->dev, "%s: error, allocation failed\n", __func__); return -ENOMEM; } chip->client = client; dev_set_drvdata(&chip->client->dev, chip); ret = poweron_cs8427(chip); if (ret) { dev_err(&chip->client->dev, "failed to bring chip out of reset\n"); return -ENODEV; } err = cs8427_i2c_read(chip, CS8427_REG_ID_AND_VER, 1, &val); if (err < 0) { dev_err(&chip->client->dev, "failed to read cs8427 trying once again\n"); err = cs8427_i2c_read(chip, CS8427_REG_ID_AND_VER, 1, &val); if (err < 0) { dev_err(&chip->client->dev, "failed to read version number\n"); return -ENODEV; } dev_dbg(&chip->client->dev, "version number read = %x\n", val); } if (val != CS8427_VER8427A) { dev_err(&chip->client->dev, "unable to find CS8427 signature " "(expected 0x%x, read 0x%x),\n", CS8427_VER8427A, val); dev_err(&chip->client->dev, " initialization is not completed\n"); return -EFAULT; } val = 0; err = cs8427_i2c_write(chip, CS8427_REG_CLOCKSOURCE, 1, &val); if (err < 0) goto __fail; memcpy(chip->regmap + (initvals1[0] & 0x7f), initvals1 + 1, 6); addr = 1; err = cs8427_i2c_sendbytes(chip, &addr, &initvals1[1], 6); if (err != 6) { err = err < 0 ? err : -EIO; goto __fail; } memset(buf, 0, 7); addr = 9; err = cs8427_i2c_sendbytes(chip, &addr, buf, 7); if (err != 7) goto __fail; addr = 0x11; memcpy(chip->regmap + (initvals2[0] & 0x7f), initvals2 + 1, 3); err = cs8427_i2c_sendbytes(chip, &addr, &initvals2[1], 3); if (err != 3) { err = err < 0 ? err : -EIO; goto __fail; } put_unaligned_le32(SNDRV_PCM_DEFAULT_CON_SPDIF, buf); memset(buf + 4, 0, CHANNEL_STATUS_SIZE - 4); if (snd_cs8427_send_corudata(chip, 0, buf, CHANNEL_STATUS_SIZE) < 0) goto __fail; memcpy(chip->playback.def_status, buf, CHANNEL_STATUS_SIZE); memcpy(chip->playback.pcm_status, buf, CHANNEL_STATUS_SIZE); if (reset_timeout < 1) reset_timeout = 1; chip->reset_timeout = reset_timeout; snd_cs8427_reset(chip); ret = snd_soc_register_codec(&chip->client->dev, &soc_codec_dev_cs8427, cs8427_dai, ARRAY_SIZE(cs8427_dai)); return 0; __fail: kfree(chip); return err < 0 ? err : -EIO; }
int snd_cs8427_create(struct snd_i2c_bus *bus, unsigned char addr, unsigned int reset_timeout, struct snd_i2c_device **r_cs8427) { static unsigned char initvals1[] = { CS8427_REG_CONTROL1 | CS8427_REG_AUTOINC, /* CS8427_REG_CONTROL1: RMCK to OMCK, valid PCM audio, disable mutes, TCBL=output */ CS8427_SWCLK | CS8427_TCBLDIR, /* CS8427_REG_CONTROL2: hold last valid audio sample, RMCK=256*Fs, normal stereo operation */ 0x00, /* CS8427_REG_DATAFLOW: output drivers normal operation, Tx<=serial, Rx=>serial */ CS8427_TXDSERIAL | CS8427_SPDAES3RECEIVER, /* CS8427_REG_CLOCKSOURCE: Run off, CMCK=256*Fs, output time base = OMCK, input time base = recovered input clock, recovered input clock source is ILRCK changed to AES3INPUT (workaround, see snd_cs8427_reset) */ CS8427_RXDILRCK, /* CS8427_REG_SERIALINPUT: Serial audio input port data format = I2S, 24-bit, 64*Fsi */ CS8427_SIDEL | CS8427_SILRPOL, /* CS8427_REG_SERIALOUTPUT: Serial audio output port data format = I2S, 24-bit, 64*Fsi */ CS8427_SODEL | CS8427_SOLRPOL, }; static unsigned char initvals2[] = { CS8427_REG_RECVERRMASK | CS8427_REG_AUTOINC, /* CS8427_REG_RECVERRMASK: unmask the input PLL clock, V, confidence, biphase, parity status bits */ /* CS8427_UNLOCK | CS8427_V | CS8427_CONF | CS8427_BIP | CS8427_PAR,*/ 0xff, /* set everything */ /* CS8427_REG_CSDATABUF: Registers 32-55 window to CS buffer Inhibit D->E transfers from overwriting first 5 bytes of CS data. Inhibit D->E transfers (all) of CS data. Allow E->F transfer of CS data. One byte mode; both A/B channels get same written CB data. A channel info is output to chip's EMPH* pin. */ CS8427_CBMR | CS8427_DETCI, /* CS8427_REG_UDATABUF: Use internal buffer to transmit User (U) data. Chip's U pin is an output. Transmit all O's for user data. Inhibit D->E transfers. Inhibit E->F transfers. */ CS8427_UD | CS8427_EFTUI | CS8427_DETUI, }; int err; struct cs8427 *chip; struct snd_i2c_device *device; unsigned char buf[24]; if ((err = snd_i2c_device_create(bus, "CS8427", CS8427_ADDR | (addr & 7), &device)) < 0) return err; chip = device->private_data = kzalloc(sizeof(*chip), GFP_KERNEL); if (chip == NULL) { snd_i2c_device_free(device); return -ENOMEM; } device->private_free = snd_cs8427_free; snd_i2c_lock(bus); err = snd_cs8427_reg_read(device, CS8427_REG_ID_AND_VER); if (err != CS8427_VER8427A) { /* give second chance */ #ifdef CONFIG_DEBUG_PRINTK snd_printk(KERN_WARNING "invalid CS8427 signature 0x%x: " "let me try again...\n", err); #else ; #endif err = snd_cs8427_reg_read(device, CS8427_REG_ID_AND_VER); } if (err != CS8427_VER8427A) { snd_i2c_unlock(bus); snd_printk(KERN_ERR "unable to find CS8427 signature " "(expected 0x%x, read 0x%x),\n", CS8427_VER8427A, err); snd_printk(KERN_ERR " initialization is not completed\n"); return -EFAULT; } /* turn off run bit while making changes to configuration */ err = snd_cs8427_reg_write(device, CS8427_REG_CLOCKSOURCE, 0x00); if (err < 0) goto __fail; /* send initial values */ memcpy(chip->regmap + (initvals1[0] & 0x7f), initvals1 + 1, 6); if ((err = snd_i2c_sendbytes(device, initvals1, 7)) != 7) { err = err < 0 ? err : -EIO; goto __fail; } /* Turn off CS8427 interrupt stuff that is not used in hardware */ memset(buf, 0, 7); /* from address 9 to 15 */ buf[0] = 9; /* register */ if ((err = snd_i2c_sendbytes(device, buf, 7)) != 7) goto __fail; /* send transfer initialization sequence */ memcpy(chip->regmap + (initvals2[0] & 0x7f), initvals2 + 1, 3); if ((err = snd_i2c_sendbytes(device, initvals2, 4)) != 4) { err = err < 0 ? err : -EIO; goto __fail; } /* write default channel status bytes */ put_unaligned_le32(SNDRV_PCM_DEFAULT_CON_SPDIF, buf); memset(buf + 4, 0, 24 - 4); if (snd_cs8427_send_corudata(device, 0, buf, 24) < 0) goto __fail; memcpy(chip->playback.def_status, buf, 24); memcpy(chip->playback.pcm_status, buf, 24); snd_i2c_unlock(bus); /* turn on run bit and rock'n'roll */ if (reset_timeout < 1) reset_timeout = 1; chip->reset_timeout = reset_timeout; snd_cs8427_reset(device); #if 0 // it's nice for read tests { char buf[128]; int xx; buf[0] = 0x81; snd_i2c_sendbytes(device, buf, 1); snd_i2c_readbytes(device, buf, 127); for (xx = 0; xx < 127; xx++) #ifdef CONFIG_DEBUG_PRINTK printk(KERN_DEBUG "reg[0x%x] = 0x%x\n", xx+1, buf[xx]); #else ; #endif } #endif if (r_cs8427) *r_cs8427 = device; return 0; __fail: snd_i2c_unlock(bus); snd_i2c_device_free(device); return err < 0 ? err : -EIO; }
int snd_cs8427_create(struct snd_i2c_bus *bus, unsigned char addr, unsigned int reset_timeout, struct snd_i2c_device **r_cs8427) { static unsigned char initvals1[] = { CS8427_REG_CONTROL1 | CS8427_REG_AUTOINC, /* */ CS8427_SWCLK | CS8427_TCBLDIR, /* */ 0x00, /* */ CS8427_TXDSERIAL | CS8427_SPDAES3RECEIVER, /* */ CS8427_RXDILRCK, /* */ CS8427_SIDEL | CS8427_SILRPOL, /* */ CS8427_SODEL | CS8427_SOLRPOL, }; static unsigned char initvals2[] = { CS8427_REG_RECVERRMASK | CS8427_REG_AUTOINC, /* */ /* */ 0xff, /* */ /* */ CS8427_CBMR | CS8427_DETCI, /* */ CS8427_UD | CS8427_EFTUI | CS8427_DETUI, }; int err; struct cs8427 *chip; struct snd_i2c_device *device; unsigned char buf[24]; if ((err = snd_i2c_device_create(bus, "CS8427", CS8427_ADDR | (addr & 7), &device)) < 0) return err; chip = device->private_data = kzalloc(sizeof(*chip), GFP_KERNEL); if (chip == NULL) { snd_i2c_device_free(device); return -ENOMEM; } device->private_free = snd_cs8427_free; snd_i2c_lock(bus); err = snd_cs8427_reg_read(device, CS8427_REG_ID_AND_VER); if (err != CS8427_VER8427A) { /* */ snd_printk(KERN_WARNING "invalid CS8427 signature 0x%x: " "let me try again...\n", err); err = snd_cs8427_reg_read(device, CS8427_REG_ID_AND_VER); } if (err != CS8427_VER8427A) { snd_i2c_unlock(bus); snd_printk(KERN_ERR "unable to find CS8427 signature " "(expected 0x%x, read 0x%x),\n", CS8427_VER8427A, err); snd_printk(KERN_ERR " initialization is not completed\n"); return -EFAULT; } /* */ err = snd_cs8427_reg_write(device, CS8427_REG_CLOCKSOURCE, 0x00); if (err < 0) goto __fail; /* */ memcpy(chip->regmap + (initvals1[0] & 0x7f), initvals1 + 1, 6); if ((err = snd_i2c_sendbytes(device, initvals1, 7)) != 7) { err = err < 0 ? err : -EIO; goto __fail; } /* */ memset(buf, 0, 7); /* */ buf[0] = 9; /* */ if ((err = snd_i2c_sendbytes(device, buf, 7)) != 7) goto __fail; /* */ memcpy(chip->regmap + (initvals2[0] & 0x7f), initvals2 + 1, 3); if ((err = snd_i2c_sendbytes(device, initvals2, 4)) != 4) { err = err < 0 ? err : -EIO; goto __fail; } /* */ put_unaligned_le32(SNDRV_PCM_DEFAULT_CON_SPDIF, buf); memset(buf + 4, 0, 24 - 4); if (snd_cs8427_send_corudata(device, 0, buf, 24) < 0) goto __fail; memcpy(chip->playback.def_status, buf, 24); memcpy(chip->playback.pcm_status, buf, 24); snd_i2c_unlock(bus); /* */ if (reset_timeout < 1) reset_timeout = 1; chip->reset_timeout = reset_timeout; snd_cs8427_reset(device); #if 0 // { char buf[128]; int xx; buf[0] = 0x81; snd_i2c_sendbytes(device, buf, 1); snd_i2c_readbytes(device, buf, 127); for (xx = 0; xx < 127; xx++) printk(KERN_DEBUG "reg[0x%x] = 0x%x\n", xx+1, buf[xx]); } #endif if (r_cs8427) *r_cs8427 = device; return 0; __fail: snd_i2c_unlock(bus); snd_i2c_device_free(device); return err < 0 ? err : -EIO; }