diff options
Diffstat (limited to 'ANDROID_3.4.5/sound/i2c/cs8427.c')
| -rw-r--r-- | ANDROID_3.4.5/sound/i2c/cs8427.c | 616 |
1 files changed, 0 insertions, 616 deletions
diff --git a/ANDROID_3.4.5/sound/i2c/cs8427.c b/ANDROID_3.4.5/sound/i2c/cs8427.c deleted file mode 100644 index 6c2dc386..00000000 --- a/ANDROID_3.4.5/sound/i2c/cs8427.c +++ /dev/null @@ -1,616 +0,0 @@ -/* - * Routines for control of the CS8427 via i2c bus - * IEC958 (S/PDIF) receiver & transmitter by Cirrus Logic - * Copyright (c) by Jaroslav Kysela <perex@perex.cz> - * - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ - -#include <linux/slab.h> -#include <linux/delay.h> -#include <linux/init.h> -#include <linux/bitrev.h> -#include <linux/module.h> -#include <asm/unaligned.h> -#include <sound/core.h> -#include <sound/control.h> -#include <sound/pcm.h> -#include <sound/cs8427.h> -#include <sound/asoundef.h> - -static void snd_cs8427_reset(struct snd_i2c_device *cs8427); - -MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); -MODULE_DESCRIPTION("IEC958 (S/PDIF) receiver & transmitter by Cirrus Logic"); -MODULE_LICENSE("GPL"); - -#define CS8427_ADDR (0x20>>1) /* fixed address */ - -struct cs8427_stream { - struct snd_pcm_substream *substream; - char hw_status[24]; /* hardware status */ - char def_status[24]; /* default status */ - char pcm_status[24]; /* PCM private status */ - char hw_udata[32]; - struct snd_kcontrol *pcm_ctl; -}; - -struct cs8427 { - unsigned char regmap[0x14]; /* map of first 1 + 13 registers */ - unsigned int rate; - unsigned int reset_timeout; - struct cs8427_stream playback; - struct cs8427_stream capture; -}; - -int snd_cs8427_reg_write(struct snd_i2c_device *device, unsigned char reg, - unsigned char val) -{ - int err; - unsigned char buf[2]; - - buf[0] = reg & 0x7f; - buf[1] = val; - if ((err = snd_i2c_sendbytes(device, buf, 2)) != 2) { - snd_printk(KERN_ERR "unable to send bytes 0x%02x:0x%02x " - "to CS8427 (%i)\n", buf[0], buf[1], err); - return err < 0 ? err : -EIO; - } - return 0; -} - -EXPORT_SYMBOL(snd_cs8427_reg_write); - -static int snd_cs8427_reg_read(struct snd_i2c_device *device, unsigned char reg) -{ - int err; - unsigned char buf; - - if ((err = snd_i2c_sendbytes(device, ®, 1)) != 1) { - snd_printk(KERN_ERR "unable to send register 0x%x byte " - "to CS8427\n", reg); - return err < 0 ? err : -EIO; - } - if ((err = snd_i2c_readbytes(device, &buf, 1)) != 1) { - snd_printk(KERN_ERR "unable to read register 0x%x byte " - "from CS8427\n", reg); - return err < 0 ? err : -EIO; - } - return buf; -} - -static int snd_cs8427_select_corudata(struct snd_i2c_device *device, int udata) -{ - struct cs8427 *chip = device->private_data; - int err; - - udata = udata ? CS8427_BSEL : 0; - if (udata != (chip->regmap[CS8427_REG_CSDATABUF] & udata)) { - chip->regmap[CS8427_REG_CSDATABUF] &= ~CS8427_BSEL; - chip->regmap[CS8427_REG_CSDATABUF] |= udata; - err = snd_cs8427_reg_write(device, CS8427_REG_CSDATABUF, - chip->regmap[CS8427_REG_CSDATABUF]); - if (err < 0) - return err; - } - return 0; -} - -static int snd_cs8427_send_corudata(struct snd_i2c_device *device, - int udata, - unsigned char *ndata, - int count) -{ - struct cs8427 *chip = device->private_data; - char *hw_data = udata ? - chip->playback.hw_udata : chip->playback.hw_status; - char data[32]; - int err, idx; - - if (!memcmp(hw_data, ndata, count)) - return 0; - if ((err = snd_cs8427_select_corudata(device, udata)) < 0) - return err; - memcpy(hw_data, ndata, count); - if (udata) { - memset(data, 0, sizeof(data)); - if (memcmp(hw_data, data, count) == 0) { - chip->regmap[CS8427_REG_UDATABUF] &= ~CS8427_UBMMASK; - chip->regmap[CS8427_REG_UDATABUF] |= CS8427_UBMZEROS | - CS8427_EFTUI; - err = snd_cs8427_reg_write(device, CS8427_REG_UDATABUF, - chip->regmap[CS8427_REG_UDATABUF]); - return err < 0 ? err : 0; - } - } - data[0] = CS8427_REG_AUTOINC | CS8427_REG_CORU_DATABUF; - for (idx = 0; idx < count; idx++) - data[idx + 1] = bitrev8(ndata[idx]); - if (snd_i2c_sendbytes(device, data, count + 1) != count + 1) - return -EIO; - return 1; -} - -static void snd_cs8427_free(struct snd_i2c_device *device) -{ - kfree(device->private_data); -} - -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 */ - 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; - } - /* 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++) - 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; -} - -EXPORT_SYMBOL(snd_cs8427_create); - -/* - * Reset the chip using run bit, also lock PLL using ILRCK and - * put back AES3INPUT. This workaround is described in latest - * CS8427 datasheet, otherwise TXDSERIAL will not work. - */ -static void snd_cs8427_reset(struct snd_i2c_device *cs8427) -{ - struct cs8427 *chip; - unsigned long end_time; - int data, aes3input = 0; - - if (snd_BUG_ON(!cs8427)) - return; - chip = cs8427->private_data; - snd_i2c_lock(cs8427->bus); - if ((chip->regmap[CS8427_REG_CLOCKSOURCE] & CS8427_RXDAES3INPUT) == - CS8427_RXDAES3INPUT) /* AES3 bit is set */ - aes3input = 1; - chip->regmap[CS8427_REG_CLOCKSOURCE] &= ~(CS8427_RUN | CS8427_RXDMASK); - snd_cs8427_reg_write(cs8427, CS8427_REG_CLOCKSOURCE, - chip->regmap[CS8427_REG_CLOCKSOURCE]); - udelay(200); - chip->regmap[CS8427_REG_CLOCKSOURCE] |= CS8427_RUN | CS8427_RXDILRCK; - snd_cs8427_reg_write(cs8427, CS8427_REG_CLOCKSOURCE, - chip->regmap[CS8427_REG_CLOCKSOURCE]); - udelay(200); - snd_i2c_unlock(cs8427->bus); - end_time = jiffies + chip->reset_timeout; - while (time_after_eq(end_time, jiffies)) { - snd_i2c_lock(cs8427->bus); - data = snd_cs8427_reg_read(cs8427, CS8427_REG_RECVERRORS); - snd_i2c_unlock(cs8427->bus); - if (!(data & CS8427_UNLOCK)) - break; - schedule_timeout_uninterruptible(1); - } - snd_i2c_lock(cs8427->bus); - chip->regmap[CS8427_REG_CLOCKSOURCE] &= ~CS8427_RXDMASK; - if (aes3input) - chip->regmap[CS8427_REG_CLOCKSOURCE] |= CS8427_RXDAES3INPUT; - snd_cs8427_reg_write(cs8427, CS8427_REG_CLOCKSOURCE, - chip->regmap[CS8427_REG_CLOCKSOURCE]); - snd_i2c_unlock(cs8427->bus); -} - -static int snd_cs8427_in_status_info(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_info *uinfo) -{ - uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; - uinfo->count = 1; - uinfo->value.integer.min = 0; - uinfo->value.integer.max = 255; - return 0; -} - -static int snd_cs8427_in_status_get(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - struct snd_i2c_device *device = snd_kcontrol_chip(kcontrol); - int data; - - snd_i2c_lock(device->bus); - data = snd_cs8427_reg_read(device, kcontrol->private_value); - snd_i2c_unlock(device->bus); - if (data < 0) - return data; - ucontrol->value.integer.value[0] = data; - return 0; -} - -static int snd_cs8427_qsubcode_info(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_info *uinfo) -{ - uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; - uinfo->count = 10; - return 0; -} - -static int snd_cs8427_qsubcode_get(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - struct snd_i2c_device *device = snd_kcontrol_chip(kcontrol); - unsigned char reg = CS8427_REG_QSUBCODE; - int err; - - snd_i2c_lock(device->bus); - if ((err = snd_i2c_sendbytes(device, ®, 1)) != 1) { - snd_printk(KERN_ERR "unable to send register 0x%x byte " - "to CS8427\n", reg); - snd_i2c_unlock(device->bus); - return err < 0 ? err : -EIO; - } - err = snd_i2c_readbytes(device, ucontrol->value.bytes.data, 10); - if (err != 10) { - snd_printk(KERN_ERR "unable to read Q-subcode bytes " - "from CS8427\n"); - snd_i2c_unlock(device->bus); - return err < 0 ? err : -EIO; - } - snd_i2c_unlock(device->bus); - return 0; -} - -static int snd_cs8427_spdif_info(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_info *uinfo) -{ - uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; - uinfo->count = 1; - return 0; -} - -static int snd_cs8427_spdif_get(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - struct snd_i2c_device *device = snd_kcontrol_chip(kcontrol); - struct cs8427 *chip = device->private_data; - - snd_i2c_lock(device->bus); - memcpy(ucontrol->value.iec958.status, chip->playback.def_status, 24); - snd_i2c_unlock(device->bus); - return 0; -} - -static int snd_cs8427_spdif_put(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - struct snd_i2c_device *device = snd_kcontrol_chip(kcontrol); - struct cs8427 *chip = device->private_data; - unsigned char *status = kcontrol->private_value ? - chip->playback.pcm_status : chip->playback.def_status; - struct snd_pcm_runtime *runtime = chip->playback.substream ? - chip->playback.substream->runtime : NULL; - int err, change; - - snd_i2c_lock(device->bus); - change = memcmp(ucontrol->value.iec958.status, status, 24) != 0; - memcpy(status, ucontrol->value.iec958.status, 24); - if (change && (kcontrol->private_value ? - runtime != NULL : runtime == NULL)) { - err = snd_cs8427_send_corudata(device, 0, status, 24); - if (err < 0) - change = err; - } - snd_i2c_unlock(device->bus); - return change; -} - -static int snd_cs8427_spdif_mask_info(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_info *uinfo) -{ - uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; - uinfo->count = 1; - return 0; -} - -static int snd_cs8427_spdif_mask_get(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_value *ucontrol) -{ - memset(ucontrol->value.iec958.status, 0xff, 24); - return 0; -} - -static struct snd_kcontrol_new snd_cs8427_iec958_controls[] = { -{ - .iface = SNDRV_CTL_ELEM_IFACE_PCM, - .info = snd_cs8427_in_status_info, - .name = "IEC958 CS8427 Input Status", - .access = (SNDRV_CTL_ELEM_ACCESS_READ | - SNDRV_CTL_ELEM_ACCESS_VOLATILE), - .get = snd_cs8427_in_status_get, - .private_value = 15, -}, -{ - .iface = SNDRV_CTL_ELEM_IFACE_PCM, - .info = snd_cs8427_in_status_info, - .name = "IEC958 CS8427 Error Status", - .access = (SNDRV_CTL_ELEM_ACCESS_READ | - SNDRV_CTL_ELEM_ACCESS_VOLATILE), - .get = snd_cs8427_in_status_get, - .private_value = 16, -}, -{ - .access = SNDRV_CTL_ELEM_ACCESS_READ, - .iface = SNDRV_CTL_ELEM_IFACE_PCM, - .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK), - .info = snd_cs8427_spdif_mask_info, - .get = snd_cs8427_spdif_mask_get, -}, -{ - .iface = SNDRV_CTL_ELEM_IFACE_PCM, - .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT), - .info = snd_cs8427_spdif_info, - .get = snd_cs8427_spdif_get, - .put = snd_cs8427_spdif_put, - .private_value = 0 -}, -{ - .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE | - SNDRV_CTL_ELEM_ACCESS_INACTIVE), - .iface = SNDRV_CTL_ELEM_IFACE_PCM, - .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM), - .info = snd_cs8427_spdif_info, - .get = snd_cs8427_spdif_get, - .put = snd_cs8427_spdif_put, - .private_value = 1 -}, -{ - .iface = SNDRV_CTL_ELEM_IFACE_PCM, - .info = snd_cs8427_qsubcode_info, - .name = "IEC958 Q-subcode Capture Default", - .access = (SNDRV_CTL_ELEM_ACCESS_READ | - SNDRV_CTL_ELEM_ACCESS_VOLATILE), - .get = snd_cs8427_qsubcode_get -}}; - -int snd_cs8427_iec958_build(struct snd_i2c_device *cs8427, - struct snd_pcm_substream *play_substream, - struct snd_pcm_substream *cap_substream) -{ - struct cs8427 *chip = cs8427->private_data; - struct snd_kcontrol *kctl; - unsigned int idx; - int err; - - if (snd_BUG_ON(!play_substream || !cap_substream)) - return -EINVAL; - for (idx = 0; idx < ARRAY_SIZE(snd_cs8427_iec958_controls); idx++) { - kctl = snd_ctl_new1(&snd_cs8427_iec958_controls[idx], cs8427); - if (kctl == NULL) - return -ENOMEM; - kctl->id.device = play_substream->pcm->device; - kctl->id.subdevice = play_substream->number; - err = snd_ctl_add(cs8427->bus->card, kctl); - if (err < 0) - return err; - if (! strcmp(kctl->id.name, - SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM))) - chip->playback.pcm_ctl = kctl; - } - - chip->playback.substream = play_substream; - chip->capture.substream = cap_substream; - if (snd_BUG_ON(!chip->playback.pcm_ctl)) - return -EIO; - return 0; -} - -EXPORT_SYMBOL(snd_cs8427_iec958_build); - -int snd_cs8427_iec958_active(struct snd_i2c_device *cs8427, int active) -{ - struct cs8427 *chip; - - if (snd_BUG_ON(!cs8427)) - return -ENXIO; - chip = cs8427->private_data; - if (active) - memcpy(chip->playback.pcm_status, - chip->playback.def_status, 24); - chip->playback.pcm_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE; - snd_ctl_notify(cs8427->bus->card, - SNDRV_CTL_EVENT_MASK_VALUE | SNDRV_CTL_EVENT_MASK_INFO, - &chip->playback.pcm_ctl->id); - return 0; -} - -EXPORT_SYMBOL(snd_cs8427_iec958_active); - -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; -} - -EXPORT_SYMBOL(snd_cs8427_iec958_pcm); - -static int __init alsa_cs8427_module_init(void) -{ - return 0; -} - -static void __exit alsa_cs8427_module_exit(void) -{ -} - -module_init(alsa_cs8427_module_init) -module_exit(alsa_cs8427_module_exit) |