diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /sound/oss/aci.c | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'sound/oss/aci.c')
-rw-r--r-- | sound/oss/aci.c | 711 |
1 files changed, 711 insertions, 0 deletions
diff --git a/sound/oss/aci.c b/sound/oss/aci.c new file mode 100644 index 000000000000..3928c2802cc4 --- /dev/null +++ b/sound/oss/aci.c @@ -0,0 +1,711 @@ +/* + * Audio Command Interface (ACI) driver (sound/aci.c) + * + * ACI is a protocol used to communicate with the microcontroller on + * some sound cards produced by miro, e.g. the miroSOUND PCM12 and + * PCM20. The ACI has been developed for miro by Norberto Pellicci + * <pellicci@home.com>. Special thanks to both him and miro for + * providing the ACI specification. + * + * The main function of the ACI is to control the mixer and to get a + * product identification. On the PCM20, ACI also controls the radio + * tuner on this card, this is supported in the Video for Linux + * miropcm20 driver. + * - + * This is a fullfeatured implementation. Unsupported features + * are bugs... (: + * + * It is not longer necessary to load the mad16 module first. The + * user is currently responsible to set the mad16 mixer correctly. + * + * To toggle the solo mode for full duplex operation just use the OSS + * record switch for the pcm ('wave') controller. Robert + * - + * + * Revision history: + * + * 1995-11-10 Markus Kuhn <mskuhn@cip.informatik.uni-erlangen.de> + * First version written. + * 1995-12-31 Markus Kuhn + * Second revision, general code cleanup. + * 1996-05-16 Hannu Savolainen + * Integrated with other parts of the driver. + * 1996-05-28 Markus Kuhn + * Initialize CS4231A mixer, make ACI first mixer, + * use new private mixer API for solo mode. + * 1998-08-18 Ruurd Reitsma <R.A.Reitsma@wbmt.tudelft.nl> + * Small modification to export ACI functions and + * complete modularisation. + * 2000-06-20 Robert Siemer <Robert.Siemer@gmx.de> + * Don't initialize the CS4231A mixer anymore, so the code is + * working again, and other small changes to fit in todays + * kernels. + * 2000-08-26 Robert Siemer + * Clean up and rewrite for 2.4.x. Maybe it's SMP safe now... (: + * ioctl bugfix, and integration of solo-mode into OSS-API, + * added (OSS-limited) equalizer support, return value bugfix, + * changed param aci_reset to reset, new params: ide, wss. + * 2001-04-20 Robert Siemer + * even more cleanups... + * 2001-10-08 Arnaldo Carvalho de Melo <acme@conectiva.com.br> + * Get rid of check_region, .bss optimizations, use set_current_state + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/proc_fs.h> +#include <linux/slab.h> +#include <asm/semaphore.h> +#include <asm/io.h> +#include <asm/uaccess.h> +#include "sound_config.h" + +int aci_port; /* as determined by bit 4 in the OPTi 929 MC4 register */ +static int aci_idcode[2]; /* manufacturer and product ID */ +int aci_version; /* ACI firmware version */ + +EXPORT_SYMBOL(aci_port); +EXPORT_SYMBOL(aci_version); + +#include "aci.h" + + +static int aci_solo; /* status bit of the card that can't be * + * checked with ACI versions prior to 0xb0 */ +static int aci_amp; /* status bit for power-amp/line-out level + but I have no docs about what is what... */ +static int aci_micpreamp=3; /* microphone preamp-level that can't be * + * checked with ACI versions prior to 0xb0 */ + +static int mixer_device; +static struct semaphore aci_sem; + +#ifdef MODULE +static int reset; +module_param(reset, bool, 0); +MODULE_PARM_DESC(reset,"When set to 1, reset aci mixer."); +#else +static int reset = 1; +#endif + +static int ide=-1; +module_param(ide, int, 0); +MODULE_PARM_DESC(ide,"1 enable, 0 disable ide-port - untested" + " default: do nothing"); +static int wss=-1; +module_param(wss, int, 0); +MODULE_PARM_DESC(wss,"change between ACI/WSS-mixer; use 0 and 1 - untested" + " default: do nothing; for PCM1-pro only"); + +#ifdef DEBUG +static void print_bits(unsigned char c) +{ + int j; + printk(KERN_DEBUG "aci: "); + + for (j=7; j>=0; j--) { + printk("%d", (c >> j) & 0x1); + } + + printk("\n"); +} +#endif + +/* + * This busy wait code normally requires less than 15 loops and + * practically always less than 100 loops on my i486/DX2 66 MHz. + * + * Warning: Waiting on the general status flag after reseting the MUTE + * function can take a VERY long time, because the PCM12 does some kind + * of fade-in effect. For this reason, access to the MUTE function has + * not been implemented at all. + * + * - The OSS interface has no mute option. It takes about 3 seconds to + * fade-in on my PCM20. busy_wait() handles it great now... Robert + */ + +static int busy_wait(void) +{ + #define MINTIME 500 + long timeout; + unsigned char byte; + + for (timeout = 1; timeout <= MINTIME+30; timeout++) { + if (((byte=inb(BUSY_REGISTER)) & 1) == 0) { + if (timeout >= MINTIME) + printk(KERN_DEBUG "aci: Got READYFLAG in round %ld.\n", timeout-MINTIME); + return byte; + } + if (timeout >= MINTIME) { + long out=10*HZ; + switch (timeout-MINTIME) { + case 0 ... 9: + out /= 10; + case 10 ... 19: + out /= 10; + case 20 ... 30: + out /= 10; + default: + set_current_state(TASK_UNINTERRUPTIBLE); + schedule_timeout(out); + break; + } + } + } + printk(KERN_WARNING "aci: busy_wait() time out.\n"); + return -EBUSY; +} + +/* The four ACI command types are fucked up. [-: + * implied is: 1w - special case for INIT + * write is: 2w1r + * read is: x(1w1r) where x is 1 or 2 (1 CHECK_SIG, 1 CHECK_STER, + * 1 VERSION, 2 IDCODE) + * the command is only in the first write, rest is protocol overhead + * + * indexed is technically a write and used for STATUS + * and the special case for TUNE is: 3w1r + * + * Here the new general sheme: TUNE --> aci_rw_cmd(x, y, z) + * indexed and write --> aci_rw_cmd(x, y, -1) + * implied and read (x=1) --> aci_rw_cmd(x, -1, -1) + * + * Read (x>=2) is not implemented (only used during initialization). + * Use aci_idcode[2] and aci_version... Robert + */ + +/* Some notes for error detection: theoretically it is possible. + * But it doubles the I/O-traffic from ww(r) to wwwrw(r) in the normal + * case and doesn't seem to be designed for that... Robert + */ + +static inline int aci_rawwrite(unsigned char byte) +{ + if (busy_wait() >= 0) { +#ifdef DEBUG + printk(KERN_DEBUG "aci_rawwrite(%d)\n", byte); +#endif + outb(byte, COMMAND_REGISTER); + return 0; + } else + return -EBUSY; +} + +static inline int aci_rawread(void) +{ + unsigned char byte; + + if (busy_wait() >= 0) { + byte=inb(STATUS_REGISTER); +#ifdef DEBUG + printk(KERN_DEBUG "%d = aci_rawread()\n", byte); +#endif + return byte; + } else + return -EBUSY; +} + + +int aci_rw_cmd(int write1, int write2, int write3) +{ + int write[] = {write1, write2, write3}; + int read = -EINTR, i; + + if (down_interruptible(&aci_sem)) + goto out; + + for (i=0; i<3; i++) { + if (write[i]< 0 || write[i] > 255) + break; + else { + read = aci_rawwrite(write[i]); + if (read < 0) + goto out_up; + } + + } + + read = aci_rawread(); +out_up: up(&aci_sem); +out: return read; +} + +EXPORT_SYMBOL(aci_rw_cmd); + +static int setvolume(int __user *arg, + unsigned char left_index, unsigned char right_index) +{ + int vol, ret, uservol, buf; + + __get_user(uservol, arg); + + /* left channel */ + vol = uservol & 0xff; + if (vol > 100) + vol = 100; + vol = SCALE(100, 0x20, vol); + if ((buf=aci_write_cmd(left_index, 0x20 - vol))<0) + return buf; + ret = SCALE(0x20, 100, vol); + + + /* right channel */ + vol = (uservol >> 8) & 0xff; + if (vol > 100) + vol = 100; + vol = SCALE(100, 0x20, vol); + if ((buf=aci_write_cmd(right_index, 0x20 - vol))<0) + return buf; + ret |= SCALE(0x20, 100, vol) << 8; + + __put_user(ret, arg); + + return 0; +} + +static int getvolume(int __user *arg, + unsigned char left_index, unsigned char right_index) +{ + int vol; + int buf; + + /* left channel */ + if ((buf=aci_indexed_cmd(ACI_STATUS, left_index))<0) + return buf; + vol = SCALE(0x20, 100, buf < 0x20 ? 0x20-buf : 0); + + /* right channel */ + if ((buf=aci_indexed_cmd(ACI_STATUS, right_index))<0) + return buf; + vol |= SCALE(0x20, 100, buf < 0x20 ? 0x20-buf : 0) << 8; + + __put_user(vol, arg); + + return 0; +} + + +/* The equalizer is somewhat strange on the ACI. From -12dB to +12dB + * write: 0xff..down.to..0x80==0x00..up.to..0x7f + */ + +static inline unsigned int eq_oss2aci(unsigned int vol) +{ + int boost=0; + unsigned int ret; + + if (vol > 100) + vol = 100; + if (vol > 50) { + vol -= 51; + boost=1; + } + if (boost) + ret=SCALE(49, 0x7e, vol)+1; + else + ret=0xff - SCALE(50, 0x7f, vol); + return ret; +} + +static inline unsigned int eq_aci2oss(unsigned int vol) +{ + if (vol < 0x80) + return SCALE(0x7f, 50, vol) + 50; + else + return SCALE(0x7f, 50, 0xff-vol); +} + + +static int setequalizer(int __user *arg, + unsigned char left_index, unsigned char right_index) +{ + int buf; + unsigned int vol; + + __get_user(vol, arg); + + /* left channel */ + if ((buf=aci_write_cmd(left_index, eq_oss2aci(vol & 0xff)))<0) + return buf; + + /* right channel */ + if ((buf=aci_write_cmd(right_index, eq_oss2aci((vol>>8) & 0xff)))<0) + return buf; + + /* the ACI equalizer is more precise */ + return 0; +} + +static int getequalizer(int __user *arg, + unsigned char left_index, unsigned char right_index) +{ + int buf; + unsigned int vol; + + /* left channel */ + if ((buf=aci_indexed_cmd(ACI_STATUS, left_index))<0) + return buf; + vol = eq_aci2oss(buf); + + /* right channel */ + if ((buf=aci_indexed_cmd(ACI_STATUS, right_index))<0) + return buf; + vol |= eq_aci2oss(buf) << 8; + + __put_user(vol, arg); + + return 0; +} + +static int aci_mixer_ioctl (int dev, unsigned int cmd, void __user * arg) +{ + int vol, buf; + int __user *p = arg; + + switch (cmd) { + case SOUND_MIXER_WRITE_VOLUME: + return setvolume(p, 0x01, 0x00); + case SOUND_MIXER_WRITE_CD: + return setvolume(p, 0x3c, 0x34); + case SOUND_MIXER_WRITE_MIC: + return setvolume(p, 0x38, 0x30); + case SOUND_MIXER_WRITE_LINE: + return setvolume(p, 0x39, 0x31); + case SOUND_MIXER_WRITE_SYNTH: + return setvolume(p, 0x3b, 0x33); + case SOUND_MIXER_WRITE_PCM: + return setvolume(p, 0x3a, 0x32); + case MIXER_WRITE(SOUND_MIXER_RADIO): /* fall through */ + case SOUND_MIXER_WRITE_LINE1: /* AUX1 or radio */ + return setvolume(p, 0x3d, 0x35); + case SOUND_MIXER_WRITE_LINE2: /* AUX2 */ + return setvolume(p, 0x3e, 0x36); + case SOUND_MIXER_WRITE_BASS: /* set band one and two */ + if (aci_idcode[1]=='C') { + if ((buf=setequalizer(p, 0x48, 0x40)) || + (buf=setequalizer(p, 0x49, 0x41))); + return buf; + } + break; + case SOUND_MIXER_WRITE_TREBLE: /* set band six and seven */ + if (aci_idcode[1]=='C') { + if ((buf=setequalizer(p, 0x4d, 0x45)) || + (buf=setequalizer(p, 0x4e, 0x46))); + return buf; + } + break; + case SOUND_MIXER_WRITE_IGAIN: /* MIC pre-amp */ + if (aci_idcode[1]=='B' || aci_idcode[1]=='C') { + __get_user(vol, p); + vol = vol & 0xff; + if (vol > 100) + vol = 100; + vol = SCALE(100, 3, vol); + if ((buf=aci_write_cmd(ACI_WRITE_IGAIN, vol))<0) + return buf; + aci_micpreamp = vol; + vol = SCALE(3, 100, vol); + vol |= (vol << 8); + __put_user(vol, p); + return 0; + } + break; + case SOUND_MIXER_WRITE_OGAIN: /* Power-amp/line-out level */ + if (aci_idcode[1]=='A' || aci_idcode[1]=='B') { + __get_user(buf, p); + buf = buf & 0xff; + if (buf > 50) + vol = 1; + else + vol = 0; + if ((buf=aci_write_cmd(ACI_SET_POWERAMP, vol))<0) + return buf; + aci_amp = vol; + if (aci_amp) + buf = (100 || 100<<8); + else + buf = 0; + __put_user(buf, p); + return 0; + } + break; + case SOUND_MIXER_WRITE_RECSRC: + /* handle solo mode control */ + __get_user(buf, p); + /* unset solo when RECSRC for PCM is requested */ + if (aci_idcode[1]=='B' || aci_idcode[1]=='C') { + vol = !(buf & SOUND_MASK_PCM); + if ((buf=aci_write_cmd(ACI_SET_SOLOMODE, vol))<0) + return buf; + aci_solo = vol; + } + buf = (SOUND_MASK_CD| SOUND_MASK_MIC| SOUND_MASK_LINE| + SOUND_MASK_SYNTH| SOUND_MASK_LINE2); + if (aci_idcode[1] == 'C') /* PCM20 radio */ + buf |= SOUND_MASK_RADIO; + else + buf |= SOUND_MASK_LINE1; + if (!aci_solo) + buf |= SOUND_MASK_PCM; + __put_user(buf, p); + return 0; + case SOUND_MIXER_READ_DEVMASK: + buf = (SOUND_MASK_VOLUME | SOUND_MASK_CD | + SOUND_MASK_MIC | SOUND_MASK_LINE | + SOUND_MASK_SYNTH | SOUND_MASK_PCM | + SOUND_MASK_LINE2); + switch (aci_idcode[1]) { + case 'C': /* PCM20 radio */ + buf |= (SOUND_MASK_RADIO | SOUND_MASK_IGAIN | + SOUND_MASK_BASS | SOUND_MASK_TREBLE); + break; + case 'B': /* PCM12 */ + buf |= (SOUND_MASK_LINE1 | SOUND_MASK_IGAIN | + SOUND_MASK_OGAIN); + break; + case 'A': /* PCM1-pro */ + buf |= (SOUND_MASK_LINE1 | SOUND_MASK_OGAIN); + break; + default: + buf |= SOUND_MASK_LINE1; + } + __put_user(buf, p); + return 0; + case SOUND_MIXER_READ_STEREODEVS: + buf = (SOUND_MASK_VOLUME | SOUND_MASK_CD | + SOUND_MASK_MIC | SOUND_MASK_LINE | + SOUND_MASK_SYNTH | SOUND_MASK_PCM | + SOUND_MASK_LINE2); + switch (aci_idcode[1]) { + case 'C': /* PCM20 radio */ + buf |= (SOUND_MASK_RADIO | + SOUND_MASK_BASS | SOUND_MASK_TREBLE); + break; + default: + buf |= SOUND_MASK_LINE1; + } + __put_user(buf, p); + return 0; + case SOUND_MIXER_READ_RECMASK: + buf = (SOUND_MASK_CD| SOUND_MASK_MIC| SOUND_MASK_LINE| + SOUND_MASK_SYNTH| SOUND_MASK_LINE2| SOUND_MASK_PCM); + if (aci_idcode[1] == 'C') /* PCM20 radio */ + buf |= SOUND_MASK_RADIO; + else + buf |= SOUND_MASK_LINE1; + + __put_user(buf, p); + return 0; + case SOUND_MIXER_READ_RECSRC: + buf = (SOUND_MASK_CD | SOUND_MASK_MIC | SOUND_MASK_LINE | + SOUND_MASK_SYNTH | SOUND_MASK_LINE2); + /* do we need aci_solo or can I get it from the ACI? */ + switch (aci_idcode[1]) { + case 'B': /* PCM12 */ + case 'C': /* PCM20 radio */ + if (aci_version >= 0xb0) { + if ((vol=aci_rw_cmd(ACI_STATUS, + ACI_S_GENERAL, -1))<0) + return vol; + if (vol & 0x20) + buf |= SOUND_MASK_PCM; + } + else + if (!aci_solo) + buf |= SOUND_MASK_PCM; + break; + default: + buf |= SOUND_MASK_PCM; + } + if (aci_idcode[1] == 'C') /* PCM20 radio */ + buf |= SOUND_MASK_RADIO; + else + buf |= SOUND_MASK_LINE1; + + __put_user(buf, p); + return 0; + case SOUND_MIXER_READ_CAPS: + __put_user(0, p); + return 0; + case SOUND_MIXER_READ_VOLUME: + return getvolume(p, 0x04, 0x03); + case SOUND_MIXER_READ_CD: + return getvolume(p, 0x0a, 0x09); + case SOUND_MIXER_READ_MIC: + return getvolume(p, 0x06, 0x05); + case SOUND_MIXER_READ_LINE: + return getvolume(p, 0x08, 0x07); + case SOUND_MIXER_READ_SYNTH: + return getvolume(p, 0x0c, 0x0b); + case SOUND_MIXER_READ_PCM: + return getvolume(p, 0x0e, 0x0d); + case MIXER_READ(SOUND_MIXER_RADIO): /* fall through */ + case SOUND_MIXER_READ_LINE1: /* AUX1 */ + return getvolume(p, 0x11, 0x10); + case SOUND_MIXER_READ_LINE2: /* AUX2 */ + return getvolume(p, 0x13, 0x12); + case SOUND_MIXER_READ_BASS: /* get band one */ + if (aci_idcode[1]=='C') { + return getequalizer(p, 0x23, 0x22); + } + break; + case SOUND_MIXER_READ_TREBLE: /* get band seven */ + if (aci_idcode[1]=='C') { + return getequalizer(p, 0x2f, 0x2e); + } + break; + case SOUND_MIXER_READ_IGAIN: /* MIC pre-amp */ + if (aci_idcode[1]=='B' || aci_idcode[1]=='C') { + /* aci_micpreamp or ACI? */ + if (aci_version >= 0xb0) { + if ((buf=aci_indexed_cmd(ACI_STATUS, + ACI_S_READ_IGAIN))<0) + return buf; + } + else + buf=aci_micpreamp; + vol = SCALE(3, 100, buf <= 3 ? buf : 3); + vol |= vol << 8; + __put_user(vol, p); + return 0; + } + break; + case SOUND_MIXER_READ_OGAIN: + if (aci_amp) + buf = (100 || 100<<8); + else + buf = 0; + __put_user(buf, p); + return 0; + } + return -EINVAL; +} + +static struct mixer_operations aci_mixer_operations = +{ + .owner = THIS_MODULE, + .id = "ACI", + .ioctl = aci_mixer_ioctl +}; + +/* + * There is also an internal mixer in the codec (CS4231A or AD1845), + * that deserves no purpose in an ACI based system which uses an + * external ACI controlled stereo mixer. Make sure that this codec + * mixer has the AUX1 input selected as the recording source, that the + * input gain is set near maximum and that the other channels going + * from the inputs to the codec output are muted. + */ + +static int __init attach_aci(void) +{ + char *boardname; + int i, rc = -EBUSY; + + init_MUTEX(&aci_sem); + + outb(0xE3, 0xf8f); /* Write MAD16 password */ + aci_port = (inb(0xf90) & 0x10) ? + 0x344: 0x354; /* Get aci_port from MC4_PORT */ + + if (!request_region(aci_port, 3, "sound mixer (ACI)")) { + printk(KERN_NOTICE + "aci: I/O area 0x%03x-0x%03x already used.\n", + aci_port, aci_port+2); + goto out; + } + + /* force ACI into a known state */ + rc = -EFAULT; + for (i=0; i<3; i++) + if (aci_rw_cmd(ACI_ERROR_OP, -1, -1)<0) + goto out_release_region; + + /* official this is one aci read call: */ + rc = -EFAULT; + if ((aci_idcode[0]=aci_rw_cmd(ACI_READ_IDCODE, -1, -1))<0 || + (aci_idcode[1]=aci_rw_cmd(ACI_READ_IDCODE, -1, -1))<0) { + printk(KERN_ERR "aci: Failed to read idcode on 0x%03x.\n", + aci_port); + goto out_release_region; + } + + if ((aci_version=aci_rw_cmd(ACI_READ_VERSION, -1, -1))<0) { + printk(KERN_ERR "aci: Failed to read version on 0x%03x.\n", + aci_port); + goto out_release_region; + } + + if (aci_idcode[0] == 'm') { + /* It looks like a miro sound card. */ + switch (aci_idcode[1]) { + case 'A': + boardname = "PCM1 pro / early PCM12"; + break; + case 'B': + boardname = "PCM12"; + break; + case 'C': + boardname = "PCM20 radio"; + break; + default: + boardname = "unknown miro"; + } + } else { + printk(KERN_WARNING "aci: Warning: unsupported card! - " + "no hardware, no specs...\n"); + boardname = "unknown Cardinal Technologies"; + } + + printk(KERN_INFO "<ACI 0x%02x, id %02x/%02x \"%c/%c\", (%s)> at 0x%03x\n", + aci_version, + aci_idcode[0], aci_idcode[1], + aci_idcode[0], aci_idcode[1], + boardname, aci_port); + + rc = -EBUSY; + if (reset) { + /* first write()s after reset fail with my PCM20 */ + if (aci_rw_cmd(ACI_INIT, -1, -1)<0 || + aci_rw_cmd(ACI_ERROR_OP, ACI_ERROR_OP, ACI_ERROR_OP)<0 || + aci_rw_cmd(ACI_ERROR_OP, ACI_ERROR_OP, ACI_ERROR_OP)<0) + goto out_release_region; + } + + /* the PCM20 is muted after reset (and reboot) */ + if (aci_rw_cmd(ACI_SET_MUTE, 0x00, -1)<0) + goto out_release_region; + + if (ide>=0) + if (aci_rw_cmd(ACI_SET_IDE, !ide, -1)<0) + goto out_release_region; + + if (wss>=0 && aci_idcode[1]=='A') + if (aci_rw_cmd(ACI_SET_WSS, !!wss, -1)<0) + goto out_release_region; + + mixer_device = sound_install_mixer(MIXER_DRIVER_VERSION, boardname, + &aci_mixer_operations, + sizeof(aci_mixer_operations), NULL); + rc = 0; + if (mixer_device < 0) { + printk(KERN_ERR "aci: Failed to install mixer.\n"); + rc = mixer_device; + goto out_release_region; + } /* else Maybe initialize the CS4231A mixer here... */ +out: return rc; +out_release_region: + release_region(aci_port, 3); + goto out; +} + +static void __exit unload_aci(void) +{ + sound_unload_mixerdev(mixer_device); + release_region(aci_port, 3); +} + +module_init(attach_aci); +module_exit(unload_aci); +MODULE_LICENSE("GPL"); |