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4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 | /* * Crystal SoundFusion CS46xx driver * * Copyright 1998-2000 Cirrus Logic Corporation <audio@crystal.cirrus.com> * Copyright 1999-2000 Jaroslav Kysela <perex@suse.cz> * Copyright 2000 Alan Cox <alan@redhat.com> * * The core of this code is taken from the ALSA project driver by * Jaroslav. Please send Jaroslav the credit for the driver and * report bugs in this port to <alan@redhat.com> * * 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., 675 Mass Ave, Cambridge, MA 02139, USA. * * Current maintainers: * Cirrus Logic Corporation, Thomas Woller (tw) * <twoller@crystal.cirrus.com> * Nils Faerber (nf) * <nils@kernelconcepts.de> * Thanks to David Pollard for testing. * * Changes: * 20000909-nf Changed cs_read, cs_write and drain_dac * 20001025-tw Separate Playback/Capture structs and buffers. * Added Scatter/Gather support for Playback. * Added Capture. * 20001027-nf Port to kernel 2.4.0-test9, some clean-ups * Start of powermanagement support (CS46XX_PM). * 20001128-tw Add module parm for default buffer order. * added DMA_GFP flag to kmalloc dma buffer allocs. * backfill silence to eliminate stuttering on * underruns. * 20001201-tw add resyncing of swptr on underruns. * 20001205-tw-nf fixed GETOSPACE ioctl() after open() * * * Status: * Playback/Capture supported from 8k-48k. * 16Bit Signed LE & 8Bit Unsigned, with Mono or Stereo supported. */ #include <linux/module.h> #include <linux/version.h> #include <linux/string.h> #include <linux/ctype.h> #include <linux/ioport.h> #include <linux/sched.h> #include <linux/delay.h> #include <linux/sound.h> #include <linux/malloc.h> #include <linux/soundcard.h> #include <linux/pci.h> #ifdef CS46XX_PM #include <linux/pm.h> #endif #include <asm/io.h> #include <asm/dma.h> #include <linux/init.h> #include <linux/poll.h> #include <linux/spinlock.h> #include <linux/ac97_codec.h> #include <linux/wrapper.h> #include <asm/uaccess.h> #include <asm/hardirq.h> #include "cs461x.h" /* MIDI buffer sizes */ #define CS_MIDIINBUF 500 #define CS_MIDIOUTBUF 500 #define ADC_RUNNING 1 #define DAC_RUNNING 2 #define CS_FMT_16BIT 1 /* These are fixed in fact */ #define CS_FMT_STEREO 2 #define CS_FMT_MASK 3 #define CS_TYPE_ADC 1 #define CS_TYPE_DAC 2 /* * CS461x definitions */ #define CS461X_BA0_SIZE 0x2000 #define CS461X_BA1_DATA0_SIZE 0x3000 #define CS461X_BA1_DATA1_SIZE 0x3800 #define CS461X_BA1_PRG_SIZE 0x7000 #define CS461X_BA1_REG_SIZE 0x0100 #define GOF_PER_SEC 200 #define CSDEBUG_INTERFACE 1 #define CSDEBUG 1 /* * Turn on/off debugging compilation by using 1/0 respectively for CSDEBUG * * * CSDEBUG is usual mode is set to 1, then use the * cs_debuglevel and cs_debugmask to turn on or off debugging. * Debug level of 1 has been defined to be kernel errors and info * that should be printed on any released driver. */ #if CSDEBUG #define CS_DBGOUT(mask,level,x) if((cs_debuglevel >= (level)) && ((mask) & cs_debugmask)) {x;} #else #define CS_DBGOUT(mask,level,x) #endif /* * cs_debugmask areas */ #define CS_INIT 0x00000001 /* initialization and probe functions */ #define CS_ERROR 0x00000002 /* tmp debugging bit placeholder */ #define CS_INTERRUPT 0x00000004 /* interrupt handler (separate from all other) */ #define CS_FUNCTION 0x00000008 /* enter/leave functions */ #define CS_WAVE_WRITE 0x00000010 /* write information for wave */ #define CS_WAVE_READ 0x00000020 /* read information for wave */ #define CS_MIDI_WRITE 0x00000040 /* write information for midi */ #define CS_MIDI_READ 0x00000080 /* read information for midi */ #define CS_MPU401_WRITE 0x00000100 /* write information for mpu401 */ #define CS_MPU401_READ 0x00000200 /* read information for mpu401 */ #define CS_OPEN 0x00000400 /* all open functions in the driver */ #define CS_RELEASE 0x00000800 /* all release functions in the driver */ #define CS_PARMS 0x00001000 /* functional and operational parameters */ #define CS_IOCTL 0x00002000 /* ioctl (non-mixer) */ #define CS_TMP 0x10000000 /* tmp debug mask bit */ #if CSDEBUG static unsigned long cs_debuglevel=1; /* levels range from 1-9 */ static unsigned long cs_debugmask=CS_INIT | CS_ERROR; /* use CS_DBGOUT with various mask values */ #endif #define DMABUF_DEFAULTORDER 3 static unsigned long defaultorder=DMABUF_DEFAULTORDER; #if MODULE MODULE_PARM(defaultorder, "i"); MODULE_PARM(cs_debuglevel, "i"); MODULE_PARM(cs_debugmask, "i"); #endif static int external_amp = 0; static int thinkpad = 0; /* An instance of the 4610 channel */ struct cs_channel { int used; int num; void *state; }; #define DRIVER_VERSION "1.10" /* magic numbers to protect our data structures */ #define CS_CARD_MAGIC 0x43525553 /* "CRUS" */ #define CS_STATE_MAGIC 0x4c4f4749 /* "LOGI" */ #define NR_HW_CH 3 /* maxinum number of AC97 codecs connected, AC97 2.0 defined 4 */ #define NR_AC97 2 static const unsigned sample_size[] = { 1, 2, 2, 4 }; static const unsigned sample_shift[] = { 0, 1, 1, 2 }; /* "software" or virtual channel, an instance of opened /dev/dsp */ struct cs_state { unsigned int magic; struct cs_card *card; /* Card info */ /* single open lock mechanism, only used for recording */ struct semaphore open_sem; wait_queue_head_t open_wait; /* file mode */ mode_t open_mode; /* virtual channel number */ int virt; struct dmabuf { /* wave sample stuff */ unsigned int rate; unsigned char fmt, enable; /* hardware channel */ struct cs_channel *channel; int pringbuf; /* Software ring slot */ void *pbuf; /* 4K hardware DMA buffer */ /* OSS buffer management stuff */ void *rawbuf; dma_addr_t dma_handle; unsigned buforder; unsigned numfrag; unsigned fragshift; unsigned divisor; unsigned type; void *tmpbuff; /* tmp buffer for sample conversions */ dma_addr_t dma_handle_tmpbuff; unsigned buforder_tmpbuff; /* Log base 2 of size in bytes.. */ /* our buffer acts like a circular ring */ unsigned hwptr; /* where dma last started, updated by update_ptr */ unsigned swptr; /* where driver last clear/filled, updated by read/write */ int count; /* bytes to be comsumed or been generated by dma machine */ unsigned total_bytes; /* total bytes dmaed by hardware */ unsigned blocks; /* total blocks */ unsigned error; /* number of over/underruns */ unsigned underrun; /* underrun pending before next write has occurred */ wait_queue_head_t wait; /* put process on wait queue when no more space in buffer */ /* redundant, but makes calculations easier */ unsigned fragsize; unsigned dmasize; unsigned fragsamples; /* OSS stuff */ unsigned mapped:1; unsigned ready:1; unsigned endcleared:1; unsigned SGok:1; unsigned update_flag; unsigned ossfragshift; int ossmaxfrags; unsigned subdivision; } dmabuf; }; struct cs_card { struct cs_channel channel[2]; unsigned int magic; /* We keep cs461x cards in a linked list */ struct cs_card *next; /* The cs461x has a certain amount of cross channel interaction so we use a single per card lock */ spinlock_t lock; /* PCI device stuff */ struct pci_dev * pci_dev; unsigned int pctl, cctl; /* Hardware DMA flag sets */ /* soundcore stuff */ int dev_audio; int dev_midi; /* structures for abstraction of hardware facilities, codecs, banks and channels*/ struct ac97_codec *ac97_codec[NR_AC97]; struct cs_state *states[2]; u16 ac97_features; int amplifier; /* Amplifier control */ void (*amplifier_ctrl)(struct cs_card *, int); int active; /* Active clocking */ void (*active_ctrl)(struct cs_card *, int); /* hardware resources */ unsigned long ba0_addr; unsigned long ba1_addr; u32 irq; /* mappings */ void *ba0; union { struct { u8 *data0; u8 *data1; u8 *pmem; u8 *reg; } name; u8 *idx[4]; } ba1; /* Function support */ struct cs_channel *(*alloc_pcm_channel)(struct cs_card *); struct cs_channel *(*alloc_rec_pcm_channel)(struct cs_card *); void (*free_pcm_channel)(struct cs_card *, int chan); /* /dev/midi stuff */ struct { unsigned ird, iwr, icnt; unsigned ord, owr, ocnt; wait_queue_head_t open_wait; wait_queue_head_t iwait; wait_queue_head_t owait; spinlock_t lock; unsigned char ibuf[CS_MIDIINBUF]; unsigned char obuf[CS_MIDIOUTBUF]; mode_t open_mode; struct semaphore open_sem; } midi; }; static struct cs_card *devs = NULL; static int cs_open_mixdev(struct inode *inode, struct file *file); static int cs_release_mixdev(struct inode *inode, struct file *file); static int cs_ioctl_mixdev(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg); static loff_t cs_llseek(struct file *file, loff_t offset, int origin); extern __inline__ unsigned ld2(unsigned int x) { unsigned r = 0; if (x >= 0x10000) { x >>= 16; r += 16; } if (x >= 0x100) { x >>= 8; r += 8; } if (x >= 0x10) { x >>= 4; r += 4; } if (x >= 4) { x >>= 2; r += 2; } if (x >= 2) r++; return r; } #if CSDEBUG /* DEBUG ROUTINES */ #define SOUND_MIXER_CS_GETDBGLEVEL _SIOWR('M',120, int) #define SOUND_MIXER_CS_SETDBGLEVEL _SIOWR('M',121, int) #define SOUND_MIXER_CS_GETDBGMASK _SIOWR('M',122, int) #define SOUND_MIXER_CS_SETDBGMASK _SIOWR('M',123, int) #define SNDCTL_DSP_CS_GETDBGLEVEL _SIOWR('P', 50, int) #define SNDCTL_DSP_CS_SETDBGLEVEL _SIOWR('P', 51, int) #define SNDCTL_DSP_CS_GETDBGMASK _SIOWR('P', 52, int) #define SNDCTL_DSP_CS_SETDBGMASK _SIOWR('P', 53, int) static void printioctl(unsigned int x) { unsigned int i; unsigned char vidx; /* these values are incorrect for the ac97 driver, fix. * Index of mixtable1[] member is Device ID * and must be <= SOUND_MIXER_NRDEVICES. * Value of array member is index into s->mix.vol[] */ static const unsigned char mixtable1[SOUND_MIXER_NRDEVICES] = { [SOUND_MIXER_PCM] = 1, /* voice */ [SOUND_MIXER_LINE1] = 2, /* AUX */ [SOUND_MIXER_CD] = 3, /* CD */ [SOUND_MIXER_LINE] = 4, /* Line */ [SOUND_MIXER_SYNTH] = 5, /* FM */ [SOUND_MIXER_MIC] = 6, /* Mic */ [SOUND_MIXER_SPEAKER] = 7, /* Speaker */ [SOUND_MIXER_RECLEV] = 8, /* Recording level */ [SOUND_MIXER_VOLUME] = 9 /* Master Volume */ }; switch(x) { case SOUND_MIXER_CS_GETDBGMASK: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_CS_GETDBGMASK: ") ); break; case SOUND_MIXER_CS_GETDBGLEVEL: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_CS_GETDBGLEVEL: ") ); break; case SOUND_MIXER_CS_SETDBGMASK: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_CS_SETDBGMASK: ") ); break; case SOUND_MIXER_CS_SETDBGLEVEL: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_CS_SETDBGLEVEL: ") ); break; case OSS_GETVERSION: CS_DBGOUT(CS_IOCTL, 4, printk("OSS_GETVERSION: ") ); break; case SNDCTL_DSP_SYNC: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SYNC: ") ); break; case SNDCTL_DSP_SETDUPLEX: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETDUPLEX: ") ); break; case SNDCTL_DSP_GETCAPS: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETCAPS: ") ); break; case SNDCTL_DSP_RESET: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_RESET: ") ); break; case SNDCTL_DSP_SPEED: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SPEED: ") ); break; case SNDCTL_DSP_STEREO: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_STEREO: ") ); break; case SNDCTL_DSP_CHANNELS: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_CHANNELS: ") ); break; case SNDCTL_DSP_GETFMTS: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETFMTS: ") ); break; case SNDCTL_DSP_SETFMT: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETFMT: ") ); break; case SNDCTL_DSP_POST: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_POST: ") ); break; case SNDCTL_DSP_GETTRIGGER: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETTRIGGER: ") ); break; case SNDCTL_DSP_SETTRIGGER: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETTRIGGER: ") ); break; case SNDCTL_DSP_GETOSPACE: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETOSPACE: ") ); break; case SNDCTL_DSP_GETISPACE: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETISPACE: ") ); break; case SNDCTL_DSP_NONBLOCK: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_NONBLOCK: ") ); break; case SNDCTL_DSP_GETODELAY: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETODELAY: ") ); break; case SNDCTL_DSP_GETIPTR: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETIPTR: ") ); break; case SNDCTL_DSP_GETOPTR: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETOPTR: ") ); break; case SNDCTL_DSP_GETBLKSIZE: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETBLKSIZE: ") ); break; case SNDCTL_DSP_SETFRAGMENT: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETFRAGMENT: ") ); break; case SNDCTL_DSP_SUBDIVIDE: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SUBDIVIDE: ") ); break; case SOUND_PCM_READ_RATE: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_READ_RATE: ") ); break; case SOUND_PCM_READ_CHANNELS: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_READ_CHANNELS: ") ); break; case SOUND_PCM_READ_BITS: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_READ_BITS: ") ); break; case SOUND_PCM_WRITE_FILTER: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_WRITE_FILTER: ") ); break; case SNDCTL_DSP_SETSYNCRO: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETSYNCRO: ") ); break; case SOUND_PCM_READ_FILTER: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_READ_FILTER: ") ); break; case SNDCTL_DSP_CS_GETDBGMASK: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_CS_GETDBGMASK: ") ); break; case SNDCTL_DSP_CS_GETDBGLEVEL: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_CS_GETDBGLEVEL: ") ); break; case SNDCTL_DSP_CS_SETDBGMASK: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_CS_SETDBGMASK: ") ); break; case SNDCTL_DSP_CS_SETDBGLEVEL: CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_CS_SETDBGLEVEL: ") ); break; case SOUND_MIXER_PRIVATE1: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE1: ") ); break; case SOUND_MIXER_PRIVATE2: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE2: ") ); break; case SOUND_MIXER_PRIVATE3: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE3: ") ); break; case SOUND_MIXER_PRIVATE4: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE4: ") ); break; case SOUND_MIXER_PRIVATE5: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE5: ") ); break; case SOUND_MIXER_INFO: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_INFO: ") ); break; case SOUND_OLD_MIXER_INFO: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_OLD_MIXER_INFO: ") ); break; default: switch (_IOC_NR(x)) { case SOUND_MIXER_VOLUME: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_VOLUME: ") ); break; case SOUND_MIXER_SPEAKER: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_SPEAKER: ") ); break; case SOUND_MIXER_RECLEV: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_RECLEV: ") ); break; case SOUND_MIXER_MIC: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_MIC: ") ); break; case SOUND_MIXER_SYNTH: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_SYNTH: ") ); break; case SOUND_MIXER_RECSRC: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_RECSRC: ") ); break; case SOUND_MIXER_DEVMASK: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_DEVMASK: ") ); break; case SOUND_MIXER_RECMASK: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_RECMASK: ") ); break; case SOUND_MIXER_STEREODEVS: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_STEREODEVS: ") ); break; case SOUND_MIXER_CAPS: CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_CAPS:") ); break; default: i = _IOC_NR(x); if (i >= SOUND_MIXER_NRDEVICES || !(vidx = mixtable1[i])) { CS_DBGOUT(CS_IOCTL, 4, printk("UNKNOWN IOCTL: 0x%.8x NR=%d ",x,i) ); } else { CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_IOCTL AC9x: 0x%.8x NR=%d ", x,i) ); } break; } } CS_DBGOUT(CS_IOCTL, 4, printk("command = 0x%x IOC_NR=%d\n",x, _IOC_NR(x)) ); } #endif /* * common I/O routines */ static void cs461x_poke(struct cs_card *codec, unsigned long reg, unsigned int val) { writel(val, codec->ba1.idx[(reg >> 16) & 3]+(reg&0xffff)); } static unsigned int cs461x_peek(struct cs_card *codec, unsigned long reg) { return readl(codec->ba1.idx[(reg >> 16) & 3]+(reg&0xffff)); } static void cs461x_pokeBA0(struct cs_card *codec, unsigned long reg, unsigned int val) { writel(val, codec->ba0+reg); } static unsigned int cs461x_peekBA0(struct cs_card *codec, unsigned long reg) { return readl(codec->ba0+reg); } static u16 cs_ac97_get(struct ac97_codec *dev, u8 reg); static void cs_ac97_set(struct ac97_codec *dev, u8 reg, u16 data); static struct cs_channel *cs_alloc_pcm_channel(struct cs_card *card) { if(card->channel[1].used==1) return NULL; card->channel[1].used=1; card->channel[1].num=1; return &card->channel[1]; } static struct cs_channel *cs_alloc_rec_pcm_channel(struct cs_card *card) { if(card->channel[0].used==1) return NULL; card->channel[0].used=1; card->channel[0].num=0; return &card->channel[0]; } static void cs_free_pcm_channel(struct cs_card *card, int channel) { card->channel[channel].state = NULL; card->channel[channel].used=0; } /* * setup a divisor value to help with conversion from * 16bit Stereo, down to 8bit stereo/mono or 16bit mono. * assign a divisor of 1 if using 16bit Stereo as that is * the only format that the static image will capture. */ static void cs_set_divisor(struct dmabuf *dmabuf) { if(dmabuf->type == CS_TYPE_DAC) dmabuf->divisor = 1; else if( !(dmabuf->fmt & CS_FMT_STEREO) && (dmabuf->fmt & CS_FMT_16BIT)) dmabuf->divisor = 2; else if( (dmabuf->fmt & CS_FMT_STEREO) && !(dmabuf->fmt & CS_FMT_16BIT)) dmabuf->divisor = 2; else if( !(dmabuf->fmt & CS_FMT_STEREO) && !(dmabuf->fmt & CS_FMT_16BIT)) dmabuf->divisor = 4; else dmabuf->divisor = 1; CS_DBGOUT(CS_PARMS | CS_FUNCTION, 8, printk( "cs46xx: cs_set_divisor()- %s %d\n", (dmabuf->type == CS_TYPE_ADC) ? "ADC" : "DAC", dmabuf->divisor) ); } /* set playback sample rate */ static unsigned int cs_set_dac_rate(struct cs_state * state, unsigned int rate) { struct dmabuf *dmabuf = &state->dmabuf; unsigned int tmp1, tmp2; unsigned int phiIncr; unsigned int correctionPerGOF, correctionPerSec; CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_set_dac_rate()+ %d\n",rate) ); /* * Compute the values used to drive the actual sample rate conversion. * The following formulas are being computed, using inline assembly * since we need to use 64 bit arithmetic to compute the values: * * phiIncr = floor((Fs,in * 2^26) / Fs,out) * correctionPerGOF = floor((Fs,in * 2^26 - Fs,out * phiIncr) / * GOF_PER_SEC) * ulCorrectionPerSec = Fs,in * 2^26 - Fs,out * phiIncr -M * GOF_PER_SEC * correctionPerGOF * * i.e. * * phiIncr:other = dividend:remainder((Fs,in * 2^26) / Fs,out) * correctionPerGOF:correctionPerSec = * dividend:remainder(ulOther / GOF_PER_SEC) */ tmp1 = rate << 16; phiIncr = tmp1 / 48000; tmp1 -= phiIncr * 48000; tmp1 <<= 10; phiIncr <<= 10; tmp2 = tmp1 / 48000; phiIncr += tmp2; tmp1 -= tmp2 * 48000; correctionPerGOF = tmp1 / GOF_PER_SEC; tmp1 -= correctionPerGOF * GOF_PER_SEC; correctionPerSec = tmp1; /* * Fill in the SampleRateConverter control block. */ spin_lock_irq(&state->card->lock); cs461x_poke(state->card, BA1_PSRC, ((correctionPerSec << 16) & 0xFFFF0000) | (correctionPerGOF & 0xFFFF)); cs461x_poke(state->card, BA1_PPI, phiIncr); spin_unlock_irq(&state->card->lock); dmabuf->rate = rate; CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_set_dac_rate()- %d\n",rate) ); return rate; } /* set recording sample rate */ static unsigned int cs_set_adc_rate(struct cs_state * state, unsigned int rate) { struct dmabuf *dmabuf = &state->dmabuf; struct cs_card *card = state->card; unsigned int phiIncr, coeffIncr, tmp1, tmp2; unsigned int correctionPerGOF, correctionPerSec, initialDelay; unsigned int frameGroupLength, cnt; CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_set_adc_rate()+ %d\n",rate) ); /* * We can only decimate by up to a factor of 1/9th the hardware rate. * Correct the value if an attempt is made to stray outside that limit. */ if ((rate * 9) < 48000) rate = 48000 / 9; /* * We can not capture at at rate greater than the Input Rate (48000). * Return an error if an attempt is made to stray outside that limit. */ if (rate > 48000) rate = 48000; /* * Compute the values used to drive the actual sample rate conversion. * The following formulas are being computed, using inline assembly * since we need to use 64 bit arithmetic to compute the values: * * coeffIncr = -floor((Fs,out * 2^23) / Fs,in) * phiIncr = floor((Fs,in * 2^26) / Fs,out) * correctionPerGOF = floor((Fs,in * 2^26 - Fs,out * phiIncr) / * GOF_PER_SEC) * correctionPerSec = Fs,in * 2^26 - Fs,out * phiIncr - * GOF_PER_SEC * correctionPerGOF * initialDelay = ceil((24 * Fs,in) / Fs,out) * * i.e. * * coeffIncr = neg(dividend((Fs,out * 2^23) / Fs,in)) * phiIncr:ulOther = dividend:remainder((Fs,in * 2^26) / Fs,out) * correctionPerGOF:correctionPerSec = * dividend:remainder(ulOther / GOF_PER_SEC) * initialDelay = dividend(((24 * Fs,in) + Fs,out - 1) / Fs,out) */ tmp1 = rate << 16; coeffIncr = tmp1 / 48000; tmp1 -= coeffIncr * 48000; tmp1 <<= 7; coeffIncr <<= 7; coeffIncr += tmp1 / 48000; coeffIncr ^= 0xFFFFFFFF; coeffIncr++; tmp1 = 48000 << 16; phiIncr = tmp1 / rate; tmp1 -= phiIncr * rate; tmp1 <<= 10; phiIncr <<= 10; tmp2 = tmp1 / rate; phiIncr += tmp2; tmp1 -= tmp2 * rate; correctionPerGOF = tmp1 / GOF_PER_SEC; tmp1 -= correctionPerGOF * GOF_PER_SEC; correctionPerSec = tmp1; initialDelay = ((48000 * 24) + rate - 1) / rate; /* * Fill in the VariDecimate control block. */ spin_lock_irq(&card->lock); cs461x_poke(card, BA1_CSRC, ((correctionPerSec << 16) & 0xFFFF0000) | (correctionPerGOF & 0xFFFF)); cs461x_poke(card, BA1_CCI, coeffIncr); cs461x_poke(card, BA1_CD, (((BA1_VARIDEC_BUF_1 + (initialDelay << 2)) << 16) & 0xFFFF0000) | 0x80); cs461x_poke(card, BA1_CPI, phiIncr); spin_unlock_irq(&card->lock); /* * Figure out the frame group length for the write back task. Basically, * this is just the factors of 24000 (2^6*3*5^3) that are not present in * the output sample rate. */ frameGroupLength = 1; for (cnt = 2; cnt <= 64; cnt *= 2) { if (((rate / cnt) * cnt) != rate) frameGroupLength *= 2; } if (((rate / 3) * 3) != rate) { frameGroupLength *= 3; } for (cnt = 5; cnt <= 125; cnt *= 5) { if (((rate / cnt) * cnt) != rate) frameGroupLength *= 5; } /* * Fill in the WriteBack control block. */ spin_lock_irq(&card->lock); cs461x_poke(card, BA1_CFG1, frameGroupLength); cs461x_poke(card, BA1_CFG2, (0x00800000 | frameGroupLength)); cs461x_poke(card, BA1_CCST, 0x0000FFFF); cs461x_poke(card, BA1_CSPB, ((65536 * rate) / 24000)); cs461x_poke(card, (BA1_CSPB + 4), 0x0000FFFF); spin_unlock_irq(&card->lock); dmabuf->rate = rate; CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_set_adc_rate()- %d\n",rate) ); return rate; } /* prepare channel attributes for playback */ static void cs_play_setup(struct cs_state *state) { struct dmabuf *dmabuf = &state->dmabuf; struct cs_card *card = state->card; unsigned int tmp, Count, playFormat; CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_play_setup()+\n") ); cs461x_poke(card, BA1_PVOL, 0x80008000); if(!dmabuf->SGok) cs461x_poke(card, BA1_PBA, virt_to_bus(dmabuf->pbuf)); Count = 4; playFormat=cs461x_peek(card, BA1_PFIE); if ((dmabuf->fmt & CS_FMT_STEREO)) { playFormat &= ~DMA_RQ_C2_AC_MONO_TO_STEREO; Count *= 2; } else playFormat |= DMA_RQ_C2_AC_MONO_TO_STEREO; if ((dmabuf->fmt & CS_FMT_16BIT)) { playFormat &= ~(DMA_RQ_C2_AC_8_TO_16_BIT | DMA_RQ_C2_AC_SIGNED_CONVERT); Count *= 2; } else playFormat |= (DMA_RQ_C2_AC_8_TO_16_BIT | DMA_RQ_C2_AC_SIGNED_CONVERT); cs461x_poke(card, BA1_PFIE, playFormat); tmp = cs461x_peek(card, BA1_PDTC); tmp &= 0xfffffe00; cs461x_poke(card, BA1_PDTC, tmp | --Count); CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_play_setup()-\n") ); } struct InitStruct { u32 long off; u32 long val; } InitArray[] = { {0x00000040, 0x3fc0000f}, {0x0000004c, 0x04800000}, {0x000000b3, 0x00000780}, {0x000000b7, 0x00000000}, {0x000000bc, 0x07800000}, {0x000000cd, 0x00800000}, }; /* * "SetCaptureSPValues()" -- Initialize record task values before each * capture startup. */ void SetCaptureSPValues(struct cs_card *card) { unsigned i, offset; CS_DBGOUT(CS_FUNCTION, 8, printk("cs46xx: SetCaptureSPValues()+\n") ); for(i=0; i<sizeof(InitArray)/sizeof(struct InitStruct); i++) { offset = InitArray[i].off*4; /* 8bit to 32bit offset value */ cs461x_poke(card, offset, InitArray[i].val ); } CS_DBGOUT(CS_FUNCTION, 8, printk("cs46xx: SetCaptureSPValues()-\n") ); } /* prepare channel attributes for recording */ static void cs_rec_setup(struct cs_state *state) { struct cs_card *card = state->card; struct dmabuf *dmabuf = &state->dmabuf; CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_rec_setup()+\n") ); SetCaptureSPValues(card); /* * set the attenuation to 0dB */ cs461x_poke(card, BA1_CVOL, 0x80008000); /* * set the physical address of the capture buffer into the SP */ cs461x_poke(card, BA1_CBA, virt_to_bus(dmabuf->rawbuf)); CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_rec_setup()-\n") ); } /* get current playback/recording dma buffer pointer (byte offset from LBA), called with spinlock held! */ extern __inline__ unsigned cs_get_dma_addr(struct cs_state *state) { struct dmabuf *dmabuf = &state->dmabuf; u32 offset; if ( (!(dmabuf->enable & DAC_RUNNING)) && (!(dmabuf->enable & ADC_RUNNING) ) ) { CS_DBGOUT(CS_ERROR, 2, printk( "cs46xx: ERROR cs_get_dma_addr(): not enabled \n") ); return 0; } /* * ganularity is byte boundry, good part. */ if(dmabuf->enable & DAC_RUNNING) { offset = cs461x_peek(state->card, BA1_PBA); } else /* ADC_RUNNING must be set */ { offset = cs461x_peek(state->card, BA1_CBA); } CS_DBGOUT(CS_PARMS | CS_FUNCTION, 9, printk("cs46xx: cs_get_dma_addr() %d\n",offset) ); offset = (u32)bus_to_virt((unsigned long)offset) - (u32)dmabuf->rawbuf; CS_DBGOUT(CS_PARMS | CS_FUNCTION, 8, printk("cs46xx: cs_get_dma_addr()- %d\n",offset) ); return offset; } static void resync_dma_ptrs(struct cs_state *state) { struct dmabuf *dmabuf = &state->dmabuf; int offset; CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: resync_dma_ptrs()+ \n") ); offset = 0; dmabuf->hwptr=dmabuf->swptr = 0; dmabuf->pringbuf = 0; CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: resync_dma_ptrs()- \n") ); } /* Stop recording (lock held) */ extern __inline__ void __stop_adc(struct cs_state *state) { struct dmabuf *dmabuf = &state->dmabuf; struct cs_card *card = state->card; unsigned int tmp; dmabuf->enable &= ~ADC_RUNNING; tmp = cs461x_peek(card, BA1_CCTL); tmp &= 0xFFFF0000; cs461x_poke(card, BA1_CCTL, tmp ); } static void stop_adc(struct cs_state *state) { unsigned long flags; CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: stop_adc()+ \n") ); spin_lock_irqsave(&state->card->lock, flags); __stop_adc(state); spin_unlock_irqrestore(&state->card->lock, flags); CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: stop_adc()- \n") ); } static void start_adc(struct cs_state *state) { struct dmabuf *dmabuf = &state->dmabuf; struct cs_card *card = state->card; unsigned long flags; unsigned int tmp; spin_lock_irqsave(&card->lock, flags); if (!(dmabuf->enable & ADC_RUNNING) && ((dmabuf->mapped || dmabuf->count < (signed)dmabuf->dmasize) && dmabuf->ready)) { dmabuf->enable |= ADC_RUNNING; cs_set_divisor(dmabuf); tmp = cs461x_peek(card, BA1_CCTL); tmp &= 0xFFFF0000; tmp |= card->cctl; CS_DBGOUT(CS_FUNCTION, 2, printk( "cs46xx: start_adc() poke 0x%x \n",tmp) ); cs461x_poke(card, BA1_CCTL, tmp); } spin_unlock_irqrestore(&card->lock, flags); } /* stop playback (lock held) */ extern __inline__ void __stop_dac(struct cs_state *state) { struct dmabuf *dmabuf = &state->dmabuf; struct cs_card *card = state->card; unsigned int tmp; dmabuf->enable &= ~DAC_RUNNING; tmp=cs461x_peek(card, BA1_PCTL); tmp&=0xFFFF; cs461x_poke(card, BA1_PCTL, tmp); } static void stop_dac(struct cs_state *state) { unsigned long flags; CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: stop_dac()+ \n") ); spin_lock_irqsave(&state->card->lock, flags); __stop_dac(state); spin_unlock_irqrestore(&state->card->lock, flags); CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: stop_dac()- \n") ); } static void start_dac(struct cs_state *state) { struct dmabuf *dmabuf = &state->dmabuf; struct cs_card *card = state->card; unsigned long flags; int tmp; CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: start_dac()+ \n") ); spin_lock_irqsave(&card->lock, flags); if (!(dmabuf->enable & DAC_RUNNING) && ((dmabuf->mapped || dmabuf->count > 0) && dmabuf->ready)) { dmabuf->enable |= DAC_RUNNING; tmp = cs461x_peek(card, BA1_PCTL); tmp &= 0xFFFF; tmp |= card->pctl; CS_DBGOUT(CS_PARMS, 6, printk( "cs46xx: start_dac() poke card=0x%.08x tmp=0x%.08x addr=0x%.08x \n", (unsigned)card, (unsigned)tmp, (unsigned)card->ba1.idx[(BA1_PCTL >> 16) & 3]+(BA1_PCTL&0xffff) ) ); cs461x_poke(card, BA1_PCTL, tmp); } spin_unlock_irqrestore(&card->lock, flags); CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: start_dac()- \n") ); } #define DMABUF_MINORDER 1 /* * allocate DMA buffer, playback and recording buffers are separate. */ static int alloc_dmabuf(struct cs_state *state) { struct dmabuf *dmabuf = &state->dmabuf; void *rawbuf = NULL; void *tmpbuff = NULL; int order; struct page *page, *pend; /* alloc as big a chunk as we can */ for (order = defaultorder; order >= DMABUF_MINORDER; order--) if((rawbuf = (void *)__get_free_pages(GFP_KERNEL | GFP_DMA, order))) break; if (!rawbuf) return -ENOMEM; dmabuf->buforder = order; dmabuf->rawbuf = rawbuf; /* now mark the pages as reserved; otherwise remap_page_range doesn't do what we want */ pend = virt_to_page(rawbuf + (PAGE_SIZE << order) - 1); for (page = virt_to_page(rawbuf); page <= pend; page++) mem_map_reserve(page); CS_DBGOUT(CS_PARMS, 9, printk("cs461x: allocated %ld (order = %d) bytes at %p\n", PAGE_SIZE << order, order, rawbuf) ); /* * now the temp buffer for 16/8 conversions */ for (order = defaultorder; order >= DMABUF_MINORDER; order--) if((tmpbuff = (void *)__get_free_pages(GFP_KERNEL | GFP_DMA, order))) break; if (!tmpbuff) return -ENOMEM; CS_DBGOUT(CS_PARMS, 9, printk("cs461x: allocated %ld (order = %d) bytes at %p\n", PAGE_SIZE << order, order, tmpbuff) ); dmabuf->tmpbuff = tmpbuff; dmabuf->buforder_tmpbuff = order; /* now mark the pages as reserved; otherwise remap_page_range doesn't do what we want */ pend = virt_to_page(tmpbuff + (PAGE_SIZE << order) - 1); for (page = virt_to_page(tmpbuff); page <= pend; page++) mem_map_reserve(page); CS_DBGOUT(CS_PARMS, 9, printk("cs461x: allocated %ld (order = %d) bytes at %p\n", PAGE_SIZE << order, order, tmpbuff) ); dmabuf->ready = dmabuf->mapped = 0; dmabuf->SGok = 0; return 0; } /* free DMA buffer */ static void dealloc_dmabuf(struct cs_state *state) { struct dmabuf *dmabuf = &state->dmabuf; struct page *page, *pend; if (dmabuf->rawbuf) { pend = virt_to_page(dmabuf->rawbuf + (PAGE_SIZE << dmabuf->buforder) - 1); for (page = virt_to_page(dmabuf->rawbuf); page <= pend; page++) mem_map_unreserve(page); pci_free_consistent(state->card->pci_dev, PAGE_SIZE << dmabuf->buforder, dmabuf->rawbuf, dmabuf->dma_handle); } dmabuf->rawbuf = NULL; if (dmabuf->tmpbuff) { /* undo marking the pages as reserved */ pend = virt_to_page(dmabuf->tmpbuff + (PAGE_SIZE << dmabuf->buforder_tmpbuff) - 1); for (page = virt_to_page(dmabuf->tmpbuff); page <= pend; page++) mem_map_unreserve(page); pci_free_consistent(state->card->pci_dev, PAGE_SIZE << dmabuf->buforder_tmpbuff, dmabuf->tmpbuff, dmabuf->dma_handle_tmpbuff); } dmabuf->rawbuf = NULL; dmabuf->tmpbuff = NULL; dmabuf->mapped = dmabuf->ready = 0; dmabuf->SGok = 0; } static int prog_dmabuf(struct cs_state *state) { struct dmabuf *dmabuf = &state->dmabuf; unsigned long flags; unsigned long allocated_pages, allocated_bytes; unsigned long tmp1, tmp2, fmt=0; unsigned long *ptmp = (unsigned long *) dmabuf->pbuf; unsigned long SGarray[9], nSGpages=0; int ret; CS_DBGOUT(CS_FUNCTION, 4, printk("cs46xx: prog_dmabuf()+ \n")); /* * check for CAPTURE and use only non-sg for initial release */ if(dmabuf->type == CS_TYPE_ADC) { CS_DBGOUT(CS_FUNCTION, 4, printk("cs46xx: prog_dmabuf() ADC\n")); /* * add in non-sg support for capture. */ spin_lock_irqsave(&state->card->lock, flags); /* add code to reset the rawbuf memory. TRW */ resync_dma_ptrs(state); dmabuf->total_bytes = dmabuf->blocks = 0; dmabuf->count = dmabuf->error = dmabuf->underrun = 0; dmabuf->SGok = 0; spin_unlock_irqrestore(&state->card->lock, flags); /* allocate DMA buffer if not allocated yet */ if (!dmabuf->rawbuf || !dmabuf->tmpbuff) if ((ret = alloc_dmabuf(state))) return ret; /* * static image only supports 16Bit signed, stereo - hard code fmt */ fmt = CS_FMT_16BIT | CS_FMT_STEREO; dmabuf->numfrag = 2; dmabuf->fragsize = 2048; dmabuf->fragsamples = 2048 >> sample_shift[fmt]; dmabuf->dmasize = 4096; dmabuf->fragshift = 11; memset(dmabuf->rawbuf, (fmt & CS_FMT_16BIT) ? 0 : 0x80, dmabuf->dmasize); memset(dmabuf->tmpbuff, (fmt & CS_FMT_16BIT) ? 0 : 0x80, PAGE_SIZE<<dmabuf->buforder_tmpbuff); /* * Now set up the ring */ spin_lock_irqsave(&state->card->lock, flags); cs_rec_setup(state); spin_unlock_irqrestore(&state->card->lock, flags); /* set the ready flag for the dma buffer */ dmabuf->ready = 1; CS_DBGOUT(CS_PARMS, 4, printk( "cs461x: prog_dmabuf(): CAPTURE rate=%d fmt=0x%x numfrag=%d " "fragsize=%d dmasize=%d\n", dmabuf->rate, dmabuf->fmt, dmabuf->numfrag, dmabuf->fragsize, dmabuf->dmasize) ); CS_DBGOUT(CS_FUNCTION, 4, printk("cs46xx: prog_dmabuf()- 0 \n")); return 0; } else if (dmabuf->type == CS_TYPE_DAC) { /* * Must be DAC */ CS_DBGOUT(CS_FUNCTION, 4, printk("cs46xx: prog_dmabuf() DAC\n")); spin_lock_irqsave(&state->card->lock, flags); resync_dma_ptrs(state); dmabuf->total_bytes = dmabuf->blocks = 0; dmabuf->count = dmabuf->error = dmabuf->underrun = 0; dmabuf->SGok = 0; spin_unlock_irqrestore(&state->card->lock, flags); /* allocate DMA buffer if not allocated yet */ if (!dmabuf->rawbuf) if ((ret = alloc_dmabuf(state))) return ret; allocated_pages = 1 << dmabuf->buforder; allocated_bytes = allocated_pages*PAGE_SIZE; if(allocated_pages < 2) { CS_DBGOUT(CS_FUNCTION, 4, printk( "cs46xx: prog_dmabuf() Error: allocated_pages too small (%d)\n", (unsigned)allocated_pages)); return -ENOMEM; } /* Use all the pages allocated, fragsize 4k. */ /* Use 'pbuf' for S/G page map table. */ dmabuf->SGok = 1; /* Use S/G. */ nSGpages = allocated_bytes/4096; /* S/G pages always 4k. */ /* Set up S/G variables. */ *ptmp = virt_to_bus(dmabuf->rawbuf); *(ptmp+1) = 0x00000008; for(tmp1= 1; tmp1 < nSGpages; tmp1++) { *(ptmp+2*tmp1) = virt_to_bus( (dmabuf->rawbuf)+4096*tmp1); if( tmp1 == nSGpages-1) tmp2 = 0xbfff0000; else tmp2 = 0x80000000+8*(tmp1+1); *(ptmp+2*tmp1+1) = tmp2; } SGarray[0] = 0x82c0200d; SGarray[1] = 0xffff0000; SGarray[2] = *ptmp; SGarray[3] = 0x00010600; SGarray[4] = *(ptmp+2); SGarray[5] = 0x80000010; SGarray[6] = *ptmp; SGarray[7] = *(ptmp+2); SGarray[8] = (virt_to_bus(dmabuf->pbuf) & 0xffff000) | 0x10; if (dmabuf->SGok) { dmabuf->numfrag = nSGpages; dmabuf->fragsize = 4096; dmabuf->fragsamples = 4096 >> sample_shift[dmabuf->fmt]; dmabuf->fragshift = 12; dmabuf->dmasize = dmabuf->numfrag*4096; } else { SGarray[0] = 0xf2c0000f; SGarray[1] = 0x00000200; SGarray[2] = 0; SGarray[3] = 0x00010600; SGarray[4]=SGarray[5]=SGarray[6]=SGarray[7]=SGarray[8] = 0; dmabuf->numfrag = 2; dmabuf->fragsize = 2048; dmabuf->fragsamples = 2048 >> sample_shift[dmabuf->fmt]; dmabuf->dmasize = 4096; dmabuf->fragshift = 11; } for(tmp1 = 0; tmp1 < sizeof(SGarray)/4; tmp1++) cs461x_poke( state->card, BA1_PDTC+tmp1*4, SGarray[tmp1]); memset(dmabuf->rawbuf, (dmabuf->fmt & CS_FMT_16BIT) ? 0 : 0x80, dmabuf->dmasize); /* * Now set up the ring */ spin_lock_irqsave(&state->card->lock, flags); cs_play_setup(state); spin_unlock_irqrestore(&state->card->lock, flags); /* set the ready flag for the dma buffer */ dmabuf->ready = 1; CS_DBGOUT(CS_PARMS, 4, printk( "cs461x: prog_dmabuf(): PLAYBACK rate=%d fmt=0x%x numfrag=%d " "fragsize=%d dmasize=%d\n", dmabuf->rate, dmabuf->fmt, dmabuf->numfrag, dmabuf->fragsize, dmabuf->dmasize) ); CS_DBGOUT(CS_FUNCTION, 4, printk("cs46xx: prog_dmabuf()- \n")); return 0; } else { CS_DBGOUT(CS_FUNCTION, 4, printk("cs46xx: prog_dmabuf()- Invalid Type %d\n", dmabuf->type)); } return 1; } static void cs_clear_tail(struct cs_state *state) { } static int drain_dac(struct cs_state *state, int nonblock) { DECLARE_WAITQUEUE(wait, current); struct dmabuf *dmabuf = &state->dmabuf; unsigned long flags; unsigned long tmo; int count; if (dmabuf->mapped || !dmabuf->ready) return 0; add_wait_queue(&dmabuf->wait, &wait); for (;;) { /* It seems that we have to set the current state to TASK_INTERRUPTIBLE every time to make the process really go to sleep */ current->state = TASK_INTERRUPTIBLE; spin_lock_irqsave(&state->card->lock, flags); count = dmabuf->count; spin_unlock_irqrestore(&state->card->lock, flags); if (count <= 0) break; if (signal_pending(current)) break; if (nonblock) { remove_wait_queue(&dmabuf->wait, &wait); current->state = TASK_RUNNING; return -EBUSY; } tmo = (dmabuf->dmasize * HZ) / dmabuf->rate; tmo >>= sample_shift[dmabuf->fmt]; tmo += (2048*HZ)/dmabuf->rate; if (!schedule_timeout(tmo ? tmo : 1) && tmo){ printk(KERN_ERR "cs461x: drain_dac, dma timeout? %d\n", count); break; } } remove_wait_queue(&dmabuf->wait, &wait); current->state = TASK_RUNNING; if (signal_pending(current)) return -ERESTARTSYS; return 0; } /* update buffer manangement pointers, especially, dmabuf->count and dmabuf->hwptr */ static void cs_update_ptr(void) { struct cs_card *card=devs; struct cs_state *state; struct dmabuf *dmabuf; unsigned hwptr; int diff; /* error handling and process wake up for ADC */ state = card->states[0]; if(state) { dmabuf = &state->dmabuf; if (dmabuf->enable & ADC_RUNNING) { /* update hardware pointer */ hwptr = cs_get_dma_addr(state); diff = (dmabuf->dmasize + hwptr - dmabuf->hwptr) % dmabuf->dmasize; CS_DBGOUT(CS_PARMS, 9, printk( "cs46xx: cs_update_ptr()+ ADC hwptr=%d diff=%d\n", hwptr,diff) ); dmabuf->hwptr = hwptr; dmabuf->total_bytes += diff; dmabuf->count += diff; if (dmabuf->count > dmabuf->dmasize) dmabuf->count = dmabuf->dmasize; if(dmabuf->mapped) { if (dmabuf->count >= (signed)dmabuf->fragsize) wake_up(&dmabuf->wait); } else { if (dmabuf->count > 0) wake_up(&dmabuf->wait); } } } /* * Now the DAC */ state = card->states[1]; if(state) { dmabuf = &state->dmabuf; /* error handling and process wake up for DAC */ if (dmabuf->enable & DAC_RUNNING) { /* update hardware pointer */ hwptr = cs_get_dma_addr(state); diff = (dmabuf->dmasize + hwptr - dmabuf->hwptr) % dmabuf->dmasize; CS_DBGOUT(CS_PARMS, 9, printk( "cs46xx: cs_update_ptr()+ DAC hwptr=%d diff=%d\n", hwptr,diff) ); dmabuf->hwptr = hwptr; dmabuf->total_bytes += diff; if (dmabuf->mapped) { dmabuf->count += diff; if (dmabuf->count >= (signed)dmabuf->fragsize) wake_up(&dmabuf->wait); /* * other drivers use fragsize, but don't see any sense * in that, since dmasize is the buffer asked for * via mmap. */ if( dmabuf->count > dmabuf->dmasize) dmabuf->count &= dmabuf->dmasize-1; } else { dmabuf->count -= diff; /* * backfill with silence and clear out the last * "diff" number of bytes. */ if(hwptr >= diff) { memset(dmabuf->rawbuf + hwptr - diff, (dmabuf->fmt & CS_FMT_16BIT) ? 0 : 0x80, diff); } else { memset(dmabuf->rawbuf, (dmabuf->fmt & CS_FMT_16BIT) ? 0 : 0x80, (unsigned)hwptr); memset((void *)((unsigned)dmabuf->rawbuf + dmabuf->dmasize + hwptr - diff), (dmabuf->fmt & CS_FMT_16BIT) ? 0 : 0x80, diff - hwptr); } if (dmabuf->count < 0 || dmabuf->count > dmabuf->dmasize) { CS_DBGOUT(CS_ERROR, 2, printk( "cs46xx: ERROR DAC count<0 or count > dmasize (%d)\n", dmabuf->count)); /* * buffer underrun or buffer overrun, reset the * count of bytes written back to 0. */ if(dmabuf->count < 0) dmabuf->underrun=1; dmabuf->count = 0; dmabuf->error++; } if (dmabuf->count < (signed)dmabuf->dmasize/2) wake_up(&dmabuf->wait); } } } } /* hold spinlock for the following! */ static void cs_handle_midi(struct cs_card *card) { unsigned char ch; int wake; unsigned temp1; wake = 0; while (!(cs461x_peekBA0(card, BA0_MIDSR) & MIDSR_RBE)) { ch = cs461x_peekBA0(card, BA0_MIDRP); if (card->midi.icnt < CS_MIDIINBUF) { card->midi.ibuf[card->midi.iwr] = ch; card->midi.iwr = (card->midi.iwr + 1) % CS_MIDIINBUF; card->midi.icnt++; } wake = 1; } if (wake) wake_up(&card->midi.iwait); wake = 0; while (!(cs461x_peekBA0(card, BA0_MIDSR) & MIDSR_TBF) && card->midi.ocnt > 0) { temp1 = ( card->midi.obuf[card->midi.ord] ) & 0x000000ff; cs461x_pokeBA0(card, BA0_MIDWP,temp1); card->midi.ord = (card->midi.ord + 1) % CS_MIDIOUTBUF; card->midi.ocnt--; if (card->midi.ocnt < CS_MIDIOUTBUF-16) wake = 1; } if (wake) wake_up(&card->midi.owait); } static void cs_interrupt(int irq, void *dev_id, struct pt_regs *regs) { struct cs_card *card = (struct cs_card *)dev_id; /* Single channel card */ struct cs_state *recstate = card->channel[0].state; struct cs_state *playstate = card->channel[1].state; u32 status; CS_DBGOUT(CS_INTERRUPT, 4, printk("cs46xx: cs_interrupt()+ \n")); spin_lock(&card->lock); status = cs461x_peekBA0(card, BA0_HISR); if ((status & 0x7fffffff) == 0) { cs461x_pokeBA0(card, BA0_HICR, HICR_CHGM|HICR_IEV); spin_unlock(&card->lock); return; } /* * check for playback or capture interrupt only */ if( ((status & HISR_VC0) && playstate && playstate->dmabuf.ready) || (((status & HISR_VC1) && recstate && recstate->dmabuf.ready)) ) { CS_DBGOUT(CS_INTERRUPT, 8, printk( "cs46xx: cs_interrupt() interrupt bit(s) set (0x%x)\n",status)); cs_update_ptr(); } if( status & HISR_MIDI ) cs_handle_midi(card); /* clear 'em */ cs461x_pokeBA0(card, BA0_HICR, HICR_CHGM|HICR_IEV); spin_unlock(&card->lock); CS_DBGOUT(CS_INTERRUPT, 4, printk("cs46xx: cs_interrupt()- \n")); } /**********************************************************************/ static ssize_t cs_midi_read(struct file *file, char *buffer, size_t count, loff_t *ppos) { struct cs_card *card = (struct cs_card *)file->private_data; ssize_t ret; unsigned long flags; unsigned ptr; int cnt; if (ppos != &file->f_pos) return -ESPIPE; if (!access_ok(VERIFY_WRITE, buffer, count)) return -EFAULT; ret = 0; while (count > 0) { spin_lock_irqsave(&card->lock, flags); ptr = card->midi.ird; cnt = CS_MIDIINBUF - ptr; if (card->midi.icnt < cnt) cnt = card->midi.icnt; spin_unlock_irqrestore(&card->lock, flags); if (cnt > count) cnt = count; if (cnt <= 0) { if (file->f_flags & O_NONBLOCK) return ret ? ret : -EAGAIN; interruptible_sleep_on(&card->midi.iwait); if (signal_pending(current)) return ret ? ret : -ERESTARTSYS; continue; } if (copy_to_user(buffer, card->midi.ibuf + ptr, cnt)) return ret ? ret : -EFAULT; ptr = (ptr + cnt) % CS_MIDIINBUF; spin_lock_irqsave(&card->lock, flags); card->midi.ird = ptr; card->midi.icnt -= cnt; spin_unlock_irqrestore(&card->lock, flags); count -= cnt; buffer += cnt; ret += cnt; } return ret; } static ssize_t cs_midi_write(struct file *file, const char *buffer, size_t count, loff_t *ppos) { struct cs_card *card = (struct cs_card *)file->private_data; ssize_t ret; unsigned long flags; unsigned ptr; int cnt; if (ppos != &file->f_pos) return -ESPIPE; if (!access_ok(VERIFY_READ, buffer, count)) return -EFAULT; ret = 0; while (count > 0) { spin_lock_irqsave(&card->lock, flags); ptr = card->midi.owr; cnt = CS_MIDIOUTBUF - ptr; if (card->midi.ocnt + cnt > CS_MIDIOUTBUF) cnt = CS_MIDIOUTBUF - card->midi.ocnt; if (cnt <= 0) cs_handle_midi(card); spin_unlock_irqrestore(&card->lock, flags); if (cnt > count) cnt = count; if (cnt <= 0) { if (file->f_flags & O_NONBLOCK) return ret ? ret : -EAGAIN; interruptible_sleep_on(&card->midi.owait); if (signal_pending(current)) return ret ? ret : -ERESTARTSYS; continue; } if (copy_from_user(card->midi.obuf + ptr, buffer, cnt)) return ret ? ret : -EFAULT; ptr = (ptr + cnt) % CS_MIDIOUTBUF; spin_lock_irqsave(&card->lock, flags); card->midi.owr = ptr; card->midi.ocnt += cnt; spin_unlock_irqrestore(&card->lock, flags); count -= cnt; buffer += cnt; ret += cnt; spin_lock_irqsave(&card->lock, flags); cs_handle_midi(card); spin_unlock_irqrestore(&card->lock, flags); } return ret; } static unsigned int cs_midi_poll(struct file *file, struct poll_table_struct *wait) { struct cs_card *card = (struct cs_card *)file->private_data; unsigned long flags; unsigned int mask = 0; if (file->f_flags & FMODE_WRITE) poll_wait(file, &card->midi.owait, wait); if (file->f_flags & FMODE_READ) poll_wait(file, &card->midi.iwait, wait); spin_lock_irqsave(&card->lock, flags); if (file->f_flags & FMODE_READ) { if (card->midi.icnt > 0) mask |= POLLIN | POLLRDNORM; } if (file->f_flags & FMODE_WRITE) { if (card->midi.ocnt < CS_MIDIOUTBUF) mask |= POLLOUT | POLLWRNORM; } spin_unlock_irqrestore(&card->lock, flags); return mask; } static int cs_midi_open(struct inode *inode, struct file *file) { int minor = MINOR(inode->i_rdev); struct cs_card *card = devs; unsigned long flags; while (card && card->dev_midi != minor) card = card->next; if (!card) return -ENODEV; file->private_data = card; /* wait for device to become free */ down(&card->midi.open_sem); while (card->midi.open_mode & file->f_mode) { if (file->f_flags & O_NONBLOCK) { up(&card->midi.open_sem); return -EBUSY; } up(&card->midi.open_sem); interruptible_sleep_on(&card->midi.open_wait); if (signal_pending(current)) return -ERESTARTSYS; down(&card->midi.open_sem); } spin_lock_irqsave(&card->midi.lock, flags); if (!(card->midi.open_mode & (FMODE_READ | FMODE_WRITE))) { card->midi.ird = card->midi.iwr = card->midi.icnt = 0; card->midi.ord = card->midi.owr = card->midi.ocnt = 0; card->midi.ird = card->midi.iwr = card->midi.icnt = 0; cs461x_pokeBA0(card, BA0_MIDCR, 0x0000000f); /* Enable xmit, rcv. */ cs461x_pokeBA0(card, BA0_HICR, HICR_IEV | HICR_CHGM); /* Enable interrupts */ } if (file->f_mode & FMODE_READ) { card->midi.ird = card->midi.iwr = card->midi.icnt = 0; } if (file->f_mode & FMODE_WRITE) { card->midi.ord = card->midi.owr = card->midi.ocnt = 0; } spin_unlock_irqrestore(&card->midi.lock, flags); card->midi.open_mode |= (file->f_mode & (FMODE_READ | FMODE_WRITE)); up(&card->midi.open_sem); MOD_INC_USE_COUNT; return 0; } static int cs_midi_release(struct inode *inode, struct file *file) { struct cs_card *card = (struct cs_card *)file->private_data; DECLARE_WAITQUEUE(wait, current); unsigned long flags; unsigned count, tmo; if (file->f_mode & FMODE_WRITE) { current->state = TASK_INTERRUPTIBLE; add_wait_queue(&card->midi.owait, &wait); for (;;) { spin_lock_irqsave(&card->midi.lock, flags); count = card->midi.ocnt; spin_unlock_irqrestore(&card->midi.lock, flags); if (count <= 0) break; if (signal_pending(current)) break; if (file->f_flags & O_NONBLOCK) { remove_wait_queue(&card->midi.owait, &wait); current->state = TASK_RUNNING; return -EBUSY; } tmo = (count * HZ) / 3100; if (!schedule_timeout(tmo ? : 1) && tmo) printk(KERN_DEBUG "cs46xx: midi timed out??\n"); } remove_wait_queue(&card->midi.owait, &wait); current->state = TASK_RUNNING; } down(&card->midi.open_sem); card->midi.open_mode &= (~(file->f_mode & (FMODE_READ | FMODE_WRITE))); up(&card->midi.open_sem); wake_up(&card->midi.open_wait); MOD_DEC_USE_COUNT; return 0; } /* * Midi file operations struct. */ static /*const*/ struct file_operations cs_midi_fops = { llseek: cs_llseek, read: cs_midi_read, write: cs_midi_write, poll: cs_midi_poll, open: cs_midi_open, release: cs_midi_release, }; static loff_t cs_llseek(struct file *file, loff_t offset, int origin) { return -ESPIPE; } /* * * CopySamples copies 16-bit stereo signed samples from the source to the * destination, possibly converting down to unsigned 8-bit and/or mono. * count specifies the number of output bytes to write. * * Arguments: * * dst - Pointer to a destination buffer. * src - Pointer to a source buffer * count - The number of bytes to copy into the destination buffer. * fmt - CS_FMT_16BIT and/or CS_FMT_STEREO bits * dmabuf - pointer to the dma buffer structure * * NOTES: only call this routine if the output desired is not 16 Signed Stereo * * */ static void CopySamples(char *dst, char *src, int count, unsigned fmt, struct dmabuf *dmabuf) { s32 s32AudioSample; s16 *psSrc=(s16 *)src; s16 *psDst=(s16 *)dst; u8 *pucDst=(u8 *)dst; CS_DBGOUT(CS_FUNCTION, 2, printk(KERN_INFO "cs4281: CopySamples()+ ") ); CS_DBGOUT(CS_WAVE_READ, 8, printk(KERN_INFO " dst=0x%x src=0x%x count=%d fmt=0x%x\n", (unsigned)dst,(unsigned)src,(unsigned)count,(unsigned)fmt) ); /* * See if the data should be output as 8-bit unsigned stereo. */ if((fmt & CS_FMT_STEREO) && !(fmt & CS_FMT_16BIT)) { /* * Convert each 16-bit signed stereo sample to 8-bit unsigned * stereo using rounding. */ psSrc = (s16 *)src; count = count/2; while(count--) { *(pucDst++) = (u8)(((s16)(*psSrc++) + (s16)0x8000) >> 8); } } /* * See if the data should be output at 8-bit unsigned mono. */ else if(!(fmt & CS_FMT_STEREO) && !(fmt & CS_FMT_16BIT)) { /* * Convert each 16-bit signed stereo sample to 8-bit unsigned * mono using averaging and rounding. */ psSrc = (s16 *)src; count = count/2; while(count--) { s32AudioSample = ((*psSrc)+(*(psSrc + 1)))/2 + (s32)0x80; if(s32AudioSample > 0x7fff) s32AudioSample = 0x7fff; *(pucDst++) = (u8)(((s16)s32AudioSample + (s16)0x8000) >> 8); psSrc += 2; } } /* * See if the data should be output at 16-bit signed mono. */ else if(!(fmt & CS_FMT_STEREO) && (fmt & CS_FMT_16BIT)) { /* * Convert each 16-bit signed stereo sample to 16-bit signed * mono using averaging. */ psSrc = (s16 *)src; count = count/2; while(count--) { *(psDst++) = (s16)((*psSrc)+(*(psSrc + 1)))/2; psSrc += 2; } } } /* * cs_copy_to_user() * replacement for the standard copy_to_user, to allow for a conversion from * 16 bit to 8 bit and from stereo to mono, if the record conversion is active. * The current CS46xx/CS4280 static image only records in 16bit unsigned Stereo, * so we convert from any of the other format combinations. */ static unsigned cs_copy_to_user( struct cs_state *s, void *dest, void *hwsrc, unsigned cnt, unsigned *copied) { struct dmabuf *dmabuf = &s->dmabuf; void *src = hwsrc; /* default to the standard destination buffer addr */ CS_DBGOUT(CS_FUNCTION, 6, printk(KERN_INFO "cs_copy_to_user()+ fmt=0x%x cnt=%d dest=0x%.8x\n", dmabuf->fmt,(unsigned)cnt,(unsigned)dest) ); if(cnt > dmabuf->dmasize) { cnt = dmabuf->dmasize; } if(!cnt) { *copied = 0; return 0; } if(dmabuf->divisor != 1) { if(!dmabuf->tmpbuff) { *copied = cnt/dmabuf->divisor; return 0; } CopySamples((char *)dmabuf->tmpbuff, (char *)hwsrc, cnt, dmabuf->fmt, dmabuf); src = dmabuf->tmpbuff; cnt = cnt/dmabuf->divisor; } if (copy_to_user(dest, src, cnt)) { CS_DBGOUT(CS_FUNCTION, 2, printk(KERN_ERR "cs4281: cs_copy_to_user()- fault dest=0x%x src=0x%x cnt=%d\n", (unsigned)dest,(unsigned)src,cnt) ); *copied = 0; return -EFAULT; } *copied = cnt; CS_DBGOUT(CS_FUNCTION, 2, printk(KERN_INFO "cs4281: cs_copy_to_user()- copied bytes is %d \n",cnt) ); return 0; } /* in this loop, dmabuf.count signifies the amount of data that is waiting to be copied to the user's buffer. it is filled by the dma machine and drained by this loop. */ static ssize_t cs_read(struct file *file, char *buffer, size_t count, loff_t *ppos) { struct cs_card *card=devs; struct cs_state *state; DECLARE_WAITQUEUE(wait, current); struct dmabuf *dmabuf; ssize_t ret = 0; unsigned long flags; unsigned swptr; int cnt; unsigned copied=0; CS_DBGOUT(CS_WAVE_READ, 4, printk("cs461x: cs_read()+ %d\n",count) ); state = (struct cs_state *)card->states[0]; if(!state) return -ENODEV; dmabuf = &state->dmabuf; if (ppos != &file->f_pos) return -ESPIPE; if (dmabuf->mapped) return -ENXIO; if (!dmabuf->ready && (ret = prog_dmabuf(state))) return ret; if (!access_ok(VERIFY_WRITE, buffer, count)) return -EFAULT; add_wait_queue(&state->dmabuf.wait, &wait); while (count > 0) { spin_lock_irqsave(&state->card->lock, flags); swptr = dmabuf->swptr; cnt = dmabuf->dmasize - swptr; if (dmabuf->count < cnt) cnt = dmabuf->count; if (cnt <= 0) __set_current_state(TASK_INTERRUPTIBLE); spin_unlock_irqrestore(&state->card->lock, flags); if (cnt > (count * dmabuf->divisor)) cnt = count * dmabuf->divisor; if (cnt <= 0) { /* buffer is empty, start the dma machine and wait for data to be recorded */ start_adc(state); if (file->f_flags & O_NONBLOCK) { if (!ret) ret = -EAGAIN; remove_wait_queue(&state->dmabuf.wait, &wait); break; } schedule(); if (signal_pending(current)) { ret = ret ? ret : -ERESTARTSYS; break; } continue; } CS_DBGOUT(CS_WAVE_READ, 2, printk(KERN_INFO "_read() copy_to cnt=%d count=%d ", cnt,count) ); CS_DBGOUT(CS_WAVE_READ, 8, printk(KERN_INFO " .dmasize=%d .count=%d buffer=0x%.8x ret=%d\n", dmabuf->dmasize,dmabuf->count,(unsigned)buffer,ret) ); if (cs_copy_to_user(state, buffer, (void *)((unsigned)dmabuf->rawbuf + swptr), cnt, &copied)) { if (!ret) ret = -EFAULT; break; } swptr = (swptr + cnt) % dmabuf->dmasize; spin_lock_irqsave(&card->lock, flags); dmabuf->swptr = swptr; dmabuf->count -= cnt; spin_unlock_irqrestore(&card->lock, flags); count -= copied; buffer += copied; ret += copied; start_adc(state); } remove_wait_queue(&state->dmabuf.wait, &wait); set_current_state(TASK_RUNNING); CS_DBGOUT(CS_WAVE_READ, 4, printk("cs461x: cs_read()- %d\n",ret) ); return ret; } /* in this loop, dmabuf.count signifies the amount of data that is waiting to be dma to the soundcard. it is drained by the dma machine and filled by this loop. */ static ssize_t cs_write(struct file *file, const char *buffer, size_t count, loff_t *ppos) { struct cs_card *card=devs; struct cs_state *state; DECLARE_WAITQUEUE(wait, current); struct dmabuf *dmabuf; ssize_t ret = 0; unsigned long flags; unsigned swptr; int cnt; CS_DBGOUT(CS_WAVE_WRITE | CS_FUNCTION, 4, printk("cs461x: cs_write called, count = %d\n", count) ); state = (struct cs_state *)card->states[1]; if(!state) return -ENODEV; dmabuf = &state->dmabuf; if (ppos != &file->f_pos) return -ESPIPE; if (dmabuf->mapped) return -ENXIO; if (!dmabuf->ready && (ret = prog_dmabuf(state))) return ret; if (!access_ok(VERIFY_READ, buffer, count)) return -EFAULT; add_wait_queue(&state->dmabuf.wait, &wait); while (count > 0) { spin_lock_irqsave(&state->card->lock, flags); if (dmabuf->count < 0) { /* buffer underrun, we are recovering from sleep_on_timeout, resync hwptr and swptr */ dmabuf->count = 0; dmabuf->swptr = dmabuf->hwptr; } if (dmabuf->underrun) { dmabuf->underrun = 0; dmabuf->hwptr = cs_get_dma_addr(state); dmabuf->swptr = dmabuf->hwptr; } swptr = dmabuf->swptr; cnt = dmabuf->dmasize - swptr; if (dmabuf->count + cnt > dmabuf->dmasize) cnt = dmabuf->dmasize - dmabuf->count; if (cnt <= 0) __set_current_state(TASK_INTERRUPTIBLE); spin_unlock_irqrestore(&state->card->lock, flags); if (cnt > count) cnt = count; if (cnt <= 0) { /* buffer is full, start the dma machine and wait for data to be played */ start_dac(state); if (file->f_flags & O_NONBLOCK) { if (!ret) ret = -EAGAIN; break; } schedule(); if (signal_pending(current)) { ret = ret ? ret : -ERESTARTSYS; break; } continue; } if (copy_from_user(dmabuf->rawbuf + swptr, buffer, cnt)) { if (!ret) ret = -EFAULT; return ret; } swptr = (swptr + cnt) % dmabuf->dmasize; spin_lock_irqsave(&state->card->lock, flags); dmabuf->swptr = swptr; dmabuf->count += cnt; if(dmabuf->count > dmabuf->dmasize) { CS_DBGOUT(CS_WAVE_WRITE | CS_ERROR, 2, printk( "cs46xx: cs_write() d->count > dmasize - resetting\n")); dmabuf->count = dmabuf->dmasize; } dmabuf->endcleared = 0; spin_unlock_irqrestore(&state->card->lock, flags); count -= cnt; buffer += cnt; ret += cnt; start_dac(state); } remove_wait_queue(&state->dmabuf.wait, &wait); set_current_state(TASK_RUNNING); CS_DBGOUT(CS_WAVE_WRITE | CS_FUNCTION, 2, printk("cs46xx: cs_write()- ret=0x%x\n", ret) ); return ret; } static unsigned int cs_poll(struct file *file, struct poll_table_struct *wait) { struct cs_card *card = (struct cs_card *)file->private_data; struct dmabuf *dmabuf; struct cs_state *state; unsigned long flags; unsigned int mask = 0; CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_poll()+ \n")); if (!(file->f_mode & (FMODE_WRITE | FMODE_READ))) { return -EINVAL; } if (file->f_mode & FMODE_WRITE) { state = card->states[1]; if(state) { dmabuf = &state->dmabuf; poll_wait(file, &dmabuf->wait, wait); } } if (file->f_mode & FMODE_READ) { state = card->states[0]; if(state) { dmabuf = &state->dmabuf; poll_wait(file, &dmabuf->wait, wait); } } spin_lock_irqsave(&card->lock, flags); cs_update_ptr(); if (file->f_mode & FMODE_READ) { state = card->states[0]; if(state) { dmabuf = &state->dmabuf; if (dmabuf->count >= (signed)dmabuf->fragsize) mask |= POLLIN | POLLRDNORM; } } if (file->f_mode & FMODE_WRITE) { state = card->states[1]; if(state) { dmabuf = &state->dmabuf; if (dmabuf->mapped) { if (dmabuf->count >= (signed)dmabuf->fragsize) mask |= POLLOUT | POLLWRNORM; } else { if ((signed)dmabuf->dmasize >= dmabuf->count + (signed)dmabuf->fragsize) mask |= POLLOUT | POLLWRNORM; } } } spin_unlock_irqrestore(&card->lock, flags); CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_poll()- \n")); return mask; } /* * We let users mmap the ring buffer. Its not the real DMA buffer but * that side of the code is hidden in the IRQ handling. We do a software * emulation of DMA from a 64K or so buffer into a 2K FIFO. * (the hardware probably deserves a moan here but Crystal send me nice * toys ;)). */ static int cs_mmap(struct file *file, struct vm_area_struct *vma) { struct cs_card *card=devs; struct cs_state *state; struct dmabuf *dmabuf; int ret; unsigned long size; CS_DBGOUT(CS_FUNCTION | CS_PARMS, 2, printk("cs46xx: cs_mmap()+ file=0x%x %s %s\n", (unsigned)file, vma->vm_flags & VM_WRITE ? "VM_WRITE" : "", vma->vm_flags & VM_READ ? "VM_READ" : "") ); if (vma->vm_flags & VM_WRITE) { state = card->states[1]; if(state) { CS_DBGOUT(CS_OPEN, 2, printk( "cs46xx: cs_mmap() VM_WRITE - state TRUE prog_dmabuf DAC\n") ); if ((ret = prog_dmabuf(state)) != 0) return ret; } } else if (vma->vm_flags & VM_READ) { state = card->states[0]; if(state) { CS_DBGOUT(CS_OPEN, 2, printk( "cs46xx: cs_mmap() VM_READ - state TRUE prog_dmabuf ADC\n") ); if ((ret = prog_dmabuf(state)) != 0) return ret; } } else { CS_DBGOUT(CS_ERROR, 2, printk( "cs46xx: cs_mmap() return -EINVAL\n") ); return -EINVAL; } /* * For now ONLY support playback, but seems like the only way to use * mmap() is to open an FD with RDWR, just read or just write access * does not function, get an error back from the kernel. * Also, QuakeIII opens with RDWR! So, there must be something * to needing read/write access mapping. So, allow read/write but * use the DAC only. */ state = card->states[1]; if(!(unsigned)state) return -EINVAL; dmabuf = &state->dmabuf; if (vma->vm_pgoff != 0) return -EINVAL; size = vma->vm_end - vma->vm_start; CS_DBGOUT(CS_PARMS, 2, printk("cs46xx: cs_mmap(): size=%d\n",(unsigned)size) ); if (size > (PAGE_SIZE << dmabuf->buforder)) return -EINVAL; if (remap_page_range(vma->vm_start, virt_to_phys(dmabuf->rawbuf), size, vma->vm_page_prot)) return -EAGAIN; dmabuf->mapped = 1; CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_mmap()-\n") ); return 0; } static int cs_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { struct cs_card *card = (struct cs_card *)file->private_data; struct cs_state *state; struct dmabuf *dmabuf=0; unsigned long flags; audio_buf_info abinfo; count_info cinfo; int val, valsave, mapped, ret; state = (struct cs_state *)card->states[0]; if(state) { dmabuf = &state->dmabuf; mapped = (file->f_mode & FMODE_READ) && dmabuf->mapped; } state = (struct cs_state *)card->states[1]; if(state) { dmabuf = &state->dmabuf; mapped |= (file->f_mode & FMODE_WRITE) && dmabuf->mapped; } #if CSDEBUG printioctl(cmd); #endif switch (cmd) { case OSS_GETVERSION: return put_user(SOUND_VERSION, (int *)arg); case SNDCTL_DSP_RESET: /* FIXME: spin_lock ? */ if (file->f_mode & FMODE_WRITE) { state = (struct cs_state *)card->states[1]; if(state) { dmabuf = &state->dmabuf; stop_dac(state); synchronize_irq(); dmabuf->ready = 0; resync_dma_ptrs(state); dmabuf->swptr = dmabuf->hwptr = 0; dmabuf->count = dmabuf->total_bytes = 0; dmabuf->blocks = 0; dmabuf->SGok = 0; } } if (file->f_mode & FMODE_READ) { state = (struct cs_state *)card->states[0]; if(state) { dmabuf = &state->dmabuf; stop_adc(state); synchronize_irq(); resync_dma_ptrs(state); dmabuf->ready = 0; dmabuf->swptr = dmabuf->hwptr = 0; dmabuf->count = dmabuf->total_bytes = 0; dmabuf->blocks = 0; dmabuf->SGok = 0; } } CS_DBGOUT(CS_IOCTL, 2, printk("cs46xx: DSP_RESET()-\n") ); return 0; case SNDCTL_DSP_SYNC: if (file->f_mode & FMODE_WRITE) return drain_dac(state, file->f_flags & O_NONBLOCK); return 0; case SNDCTL_DSP_SPEED: /* set sample rate */ if (get_user(val, (int *)arg)) return -EFAULT; if (val >= 0) { if (file->f_mode & FMODE_READ) { state = (struct cs_state *)card->states[0]; if(state) { dmabuf = &state->dmabuf; stop_adc(state); dmabuf->ready = 0; dmabuf->SGok = 0; cs_set_adc_rate(state, val); cs_set_divisor(dmabuf); } } if (file->f_mode & FMODE_WRITE) { state = (struct cs_state *)card->states[1]; if(state) { dmabuf = &state->dmabuf; stop_dac(state); dmabuf->ready = 0; dmabuf->SGok = 0; cs_set_dac_rate(state, val); cs_set_divisor(dmabuf); } } CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk( "cs46xx: cs_ioctl() DSP_SPEED %s %s %d\n", file->f_mode & FMODE_WRITE ? "DAC" : "", file->f_mode & FMODE_READ ? "ADC" : "", dmabuf->rate ) ); return put_user(dmabuf->rate, (int *)arg); } return put_user(0, (int *)arg); case SNDCTL_DSP_STEREO: /* set stereo or mono channel */ if (get_user(val, (int *)arg)) return -EFAULT; if (file->f_mode & FMODE_WRITE) { state = (struct cs_state *)card->states[1]; if(state) { dmabuf = &state->dmabuf; stop_dac(state); dmabuf->ready = 0; dmabuf->SGok = 0; if(val) dmabuf->fmt |= CS_FMT_STEREO; else dmabuf->fmt &= ~CS_FMT_STEREO; cs_set_divisor(dmabuf); CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk( "cs46xx: DSP_STEREO() DAC %s\n", (dmabuf->fmt & CS_FMT_STEREO) ? "STEREO":"MONO") ); } } if (file->f_mode & FMODE_READ) { state = (struct cs_state *)card->states[0]; if(state) { dmabuf = &state->dmabuf; stop_adc(state); dmabuf->ready = 0; dmabuf->SGok = 0; if(val) dmabuf->fmt |= CS_FMT_STEREO; else dmabuf->fmt &= ~CS_FMT_STEREO; cs_set_divisor(dmabuf); CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk( "cs46xx: DSP_STEREO() ADC %s\n", (dmabuf->fmt & CS_FMT_STEREO) ? "STEREO":"MONO") ); } } return 0; case SNDCTL_DSP_GETBLKSIZE: if (file->f_mode & FMODE_WRITE) { state = (struct cs_state *)card->states[1]; if(state) { dmabuf = &state->dmabuf; if ((val = prog_dmabuf(state))) return val; return put_user(dmabuf->fragsize, (int *)arg); } } if (file->f_mode & FMODE_READ) { state = (struct cs_state *)card->states[0]; if(state) { dmabuf = &state->dmabuf; if ((val = prog_dmabuf(state))) return val; return put_user(dmabuf->fragsize/dmabuf->divisor, (int *)arg); } } return put_user(0, (int *)arg); case SNDCTL_DSP_GETFMTS: /* Returns a mask of supported sample format*/ return put_user(AFMT_S16_LE | AFMT_U8, (int *)arg); case SNDCTL_DSP_SETFMT: /* Select sample format */ if (get_user(val, (int *)arg)) return -EFAULT; CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk( "cs46xx: cs_ioctl() DSP_SETFMT %s %s %s %s\n", file->f_mode & FMODE_WRITE ? "DAC" : "", file->f_mode & FMODE_READ ? "ADC" : "", val == AFMT_S16_LE ? "16Bit Signed" : "", val == AFMT_U8 ? "8Bit Unsigned" : "") ); valsave = val; if (val != AFMT_QUERY) { if(val==AFMT_S16_LE || val==AFMT_U8) { if (file->f_mode & FMODE_WRITE) { state = (struct cs_state *)card->states[1]; if(state) { dmabuf = &state->dmabuf; stop_dac(state); dmabuf->ready = 0; dmabuf->SGok = 0; if(val==AFMT_S16_LE) dmabuf->fmt |= CS_FMT_16BIT; else dmabuf->fmt &= ~CS_FMT_16BIT; cs_set_divisor(dmabuf); if((ret = prog_dmabuf(state))) return ret; } } if (file->f_mode & FMODE_READ) { val = valsave; state = (struct cs_state *)card->states[0]; if(state) { dmabuf = &state->dmabuf; stop_adc(state); dmabuf->ready = 0; dmabuf->SGok = 0; if(val==AFMT_S16_LE) dmabuf->fmt |= CS_FMT_16BIT; else dmabuf->fmt &= ~CS_FMT_16BIT; cs_set_divisor(dmabuf); if((ret = prog_dmabuf(state))) return ret; } } } else { CS_DBGOUT(CS_IOCTL | CS_ERROR, 2, printk( "cs46xx: DSP_SETFMT() Unsupported format (0x%x)\n", valsave) ); } } else { if(file->f_mode & FMODE_WRITE) { state = (struct cs_state *)card->states[1]; if(state) dmabuf = &state->dmabuf; } else if(file->f_mode & FMODE_READ) { state = (struct cs_state *)card->states[0]; if(state) dmabuf = &state->dmabuf; } } if(dmabuf) { if(dmabuf->fmt & CS_FMT_16BIT) return put_user(AFMT_S16_LE, (int *)arg); else return put_user(AFMT_U8, (int *)arg); } return put_user(0, (int *)arg); case SNDCTL_DSP_CHANNELS: if (get_user(val, (int *)arg)) return -EFAULT; if (val != 0) { if (file->f_mode & FMODE_WRITE) { state = (struct cs_state *)card->states[1]; if(state) { dmabuf = &state->dmabuf; stop_dac(state); dmabuf->ready = 0; dmabuf->SGok = 0; if(val>1) dmabuf->fmt |= CS_FMT_STEREO; else dmabuf->fmt &= ~CS_FMT_STEREO; cs_set_divisor(dmabuf); if (prog_dmabuf(state)) return 0; } } if (file->f_mode & FMODE_READ) { state = (struct cs_state *)card->states[0]; if(state) { dmabuf = &state->dmabuf; stop_adc(state); dmabuf->ready = 0; dmabuf->SGok = 0; if(val>1) dmabuf->fmt |= CS_FMT_STEREO; else dmabuf->fmt &= ~CS_FMT_STEREO; cs_set_divisor(dmabuf); if (prog_dmabuf(state)) return 0; } } } return put_user((dmabuf->fmt & CS_FMT_STEREO) ? 2 : 1, (int *)arg); case SNDCTL_DSP_POST: /* * There will be a longer than normal pause in the data. * so... do nothing, because there is nothing that we can do. */ return 0; case SNDCTL_DSP_SUBDIVIDE: if (file->f_mode & FMODE_WRITE) { state = (struct cs_state *)card->states[1]; if(state) { dmabuf = &state->dmabuf; if (dmabuf->subdivision) return -EINVAL; if (get_user(val, (int *)arg)) return -EFAULT; if (val != 1 && val != 2) return -EINVAL; dmabuf->subdivision = val; } } if (file->f_mode & FMODE_READ) { state = (struct cs_state *)card->states[0]; if(state) { dmabuf = &state->dmabuf; if (dmabuf->subdivision) return -EINVAL; if (get_user(val, (int *)arg)) return -EFAULT; if (val != 1 && val != 2) return -EINVAL; dmabuf->subdivision = val; } } return 0; case SNDCTL_DSP_SETFRAGMENT: if (get_user(val, (int *)arg)) return -EFAULT; if (file->f_mode & FMODE_WRITE) { state = (struct cs_state *)card->states[1]; if(state) { dmabuf = &state->dmabuf; dmabuf->ossfragshift = val & 0xffff; dmabuf->ossmaxfrags = (val >> 16) & 0xffff; } } if (file->f_mode & FMODE_READ) { state = (struct cs_state *)card->states[0]; if(state) { dmabuf = &state->dmabuf; dmabuf->ossfragshift = val & 0xffff; dmabuf->ossmaxfrags = (val >> 16) & 0xffff; } } return 0; case SNDCTL_DSP_GETOSPACE: state = (struct cs_state *)card->states[1]; if(state) { dmabuf = &state->dmabuf; spin_lock_irqsave(&state->card->lock, flags); cs_update_ptr(); abinfo.fragsize = dmabuf->fragsize; abinfo.fragstotal = dmabuf->numfrag; /* * for mmap we always have total space available */ if (dmabuf->mapped) abinfo.bytes = dmabuf->dmasize; else abinfo.bytes = dmabuf->dmasize - dmabuf->count; abinfo.fragments = abinfo.bytes >> dmabuf->fragshift; spin_unlock_irqrestore(&state->card->lock, flags); return copy_to_user((void *)arg, &abinfo, sizeof(abinfo)) ? -EFAULT : 0; } return -ENODEV; case SNDCTL_DSP_GETISPACE: state = (struct cs_state *)card->states[0]; if(state) { dmabuf = &state->dmabuf; spin_lock_irqsave(&state->card->lock, flags); cs_update_ptr(); abinfo.fragsize = dmabuf->fragsize/dmabuf->divisor; abinfo.bytes = dmabuf->count/dmabuf->divisor; abinfo.fragstotal = dmabuf->numfrag; abinfo.fragments = abinfo.bytes >> dmabuf->fragshift; spin_unlock_irqrestore(&state->card->lock, flags); return copy_to_user((void *)arg, &abinfo, sizeof(abinfo)) ? -EFAULT : 0; } return -ENODEV; case SNDCTL_DSP_NONBLOCK: file->f_flags |= O_NONBLOCK; return 0; case SNDCTL_DSP_GETCAPS: return put_user(DSP_CAP_REALTIME|DSP_CAP_TRIGGER|DSP_CAP_MMAP, (int *)arg); case SNDCTL_DSP_GETTRIGGER: val = 0; CS_DBGOUT(CS_IOCTL, 2, printk("cs46xx: DSP_GETTRIGGER()+\n") ); if (file->f_mode & FMODE_WRITE) { state = (struct cs_state *)card->states[1]; if(state) { dmabuf = &state->dmabuf; if(dmabuf->enable & DAC_RUNNING) val |= PCM_ENABLE_INPUT; } } if (file->f_mode & FMODE_READ) { if(state) { state = (struct cs_state *)card->states[0]; dmabuf = &state->dmabuf; if(dmabuf->enable & ADC_RUNNING) val |= PCM_ENABLE_OUTPUT; } } CS_DBGOUT(CS_IOCTL, 2, printk("cs46xx: DSP_GETTRIGGER()- val=0x%x\n",val) ); return put_user(val, (int *)arg); case SNDCTL_DSP_SETTRIGGER: if (get_user(val, (int *)arg)) return -EFAULT; if (file->f_mode & FMODE_READ) { state = (struct cs_state *)card->states[0]; if(state) { dmabuf = &state->dmabuf; if (val & PCM_ENABLE_INPUT) { if (!dmabuf->ready && (ret = prog_dmabuf(state))) return ret; start_adc(state); } else stop_adc(state); } } if (file->f_mode & FMODE_WRITE) { state = (struct cs_state *)card->states[1]; if(state) { dmabuf = &state->dmabuf; if (val & PCM_ENABLE_OUTPUT) { if (!dmabuf->ready && (ret = prog_dmabuf(state))) return ret; start_dac(state); } else stop_dac(state); } } return 0; case SNDCTL_DSP_GETIPTR: state = (struct cs_state *)card->states[0]; if(state) { dmabuf = &state->dmabuf; spin_lock_irqsave(&state->card->lock, flags); cs_update_ptr(); cinfo.bytes = dmabuf->total_bytes/dmabuf->divisor; cinfo.blocks = dmabuf->count/dmabuf->divisor >> dmabuf->fragshift; cinfo.ptr = dmabuf->hwptr/dmabuf->divisor; spin_unlock_irqrestore(&state->card->lock, flags); return copy_to_user((void *)arg, &cinfo, sizeof(cinfo)); } return -ENODEV; case SNDCTL_DSP_GETOPTR: state = (struct cs_state *)card->states[1]; if(state) { dmabuf = &state->dmabuf; spin_lock_irqsave(&state->card->lock, flags); cs_update_ptr(); cinfo.bytes = dmabuf->total_bytes; if (dmabuf->mapped) { cinfo.blocks = (cinfo.bytes >> dmabuf->fragshift) - dmabuf->blocks; CS_DBGOUT(CS_PARMS, 8, printk("total_bytes=%d blocks=%d dmabuf->blocks=%d\n", cinfo.bytes,cinfo.blocks,dmabuf->blocks) ); dmabuf->blocks = cinfo.bytes >> dmabuf->fragshift; } else { cinfo.blocks = dmabuf->count >> dmabuf->fragshift; } cinfo.ptr = dmabuf->hwptr; CS_DBGOUT(CS_PARMS, 4, printk( "cs46xx: GETOPTR bytes=%d blocks=%d ptr=%d\n", cinfo.bytes,cinfo.blocks,cinfo.ptr) ); spin_unlock_irqrestore(&state->card->lock, flags); return copy_to_user((void *)arg, &cinfo, sizeof(cinfo)); } return -ENODEV; case SNDCTL_DSP_SETDUPLEX: return -EINVAL; case SNDCTL_DSP_GETODELAY: if (!(file->f_mode & FMODE_WRITE)) return -EINVAL; state = (struct cs_state *)card->states[1]; if(state) { dmabuf = &state->dmabuf; spin_lock_irqsave(&state->card->lock, flags); cs_update_ptr(); val = dmabuf->count; spin_unlock_irqrestore(&state->card->lock, flags); } else val = 0; return put_user(val, (int *)arg); case SOUND_PCM_READ_RATE: state = (struct cs_state *)card->states[0]; if(state) { dmabuf = &state->dmabuf; return put_user(dmabuf->rate, (int *)arg); } return put_user(0, (int *)arg); case SOUND_PCM_READ_CHANNELS: state = (struct cs_state *)card->states[0]; if(state) { dmabuf = &state->dmabuf; return put_user((dmabuf->fmt & CS_FMT_STEREO) ? 2 : 1, (int *)arg); } return put_user(0, (int *)arg); case SOUND_PCM_READ_BITS: state = (struct cs_state *)card->states[0]; if(state) { dmabuf = &state->dmabuf; return put_user(AFMT_S16_LE | AFMT_U8, (int *)arg); } return put_user(0, (int *)arg); case SNDCTL_DSP_MAPINBUF: case SNDCTL_DSP_MAPOUTBUF: case SNDCTL_DSP_SETSYNCRO: case SOUND_PCM_WRITE_FILTER: case SOUND_PCM_READ_FILTER: return -EINVAL; } return -EINVAL; } /* * AMP control - null AMP */ static void amp_none(struct cs_card *card, int change) { } /* * Crystal EAPD mode */ static void amp_voyetra(struct cs_card *card, int change) { /* Manage the EAPD bit on the Crystal 4297 and the Analog AD1885 */ int old=card->amplifier; card->amplifier+=change; if(card->amplifier && !old) { /* Turn the EAPD amp on */ cs_ac97_set(card->ac97_codec[0], AC97_POWER_CONTROL, cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) | 0x8000); } else if(old && !card->amplifier) { /* Turn the EAPD amp off */ cs_ac97_set(card->ac97_codec[0], AC97_POWER_CONTROL, cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) & ~0x8000); } } /* * Untested */ static void amp_voyetra_4294(struct cs_card *card, int change) { struct ac97_codec *c=card->ac97_codec[0]; card->amplifier+=change; if(card->amplifier) { /* Switch the GPIO pins 7 and 8 to open drain */ cs_ac97_set(c, 0x4C, cs_ac97_get(c, 0x4C) & 0xFE7F); cs_ac97_set(c, 0x4E, cs_ac97_get(c, 0x4E) | 0x0180); /* Now wake the AMP (this might be backwards) */ cs_ac97_set(c, 0x54, cs_ac97_get(c, 0x54) & ~0x0180); } else { cs_ac97_set(c, 0x54, cs_ac97_get(c, 0x54) | 0x0180); } } /* * Handle the CLKRUN on a thinkpad. We must disable CLKRUN support * whenever we need to beat on the chip. * * The original idea and code for this hack comes from David Kaiser at * Linuxcare. Perhaps one day Crystal will document their chips well * enough to make them useful. */ static void clkrun_hack(struct cs_card *card, int change) { struct pci_dev *acpi_dev; u16 control; u8 pp; unsigned long port; int old=card->amplifier; card->amplifier+=change; acpi_dev = pci_find_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, NULL); if(acpi_dev == NULL) return; /* Not a thinkpad thats for sure */ /* Find the control port */ pci_read_config_byte(acpi_dev, 0x41, &pp); port=pp<<8; /* Read ACPI port */ control=inw(port+0x10); /* Flip CLKRUN off while running */ if(!card->amplifier && old) outw(control|0x2000, port+0x10); else if(card->amplifier && !old) outw(control&~0x2000, port+0x10); } static int cs_open(struct inode *inode, struct file *file) { struct cs_card *card = devs; struct cs_state *state = NULL; struct dmabuf *dmabuf = NULL; int ret=0; CS_DBGOUT(CS_OPEN | CS_FUNCTION, 2, printk("cs46xx: cs_open()+ file=0x%x %s %s\n", (unsigned)file, file->f_mode & FMODE_WRITE ? "FMODE_WRITE" : "", file->f_mode & FMODE_READ ? "FMODE_READ" : "") ); /* * hardcode state[0] for capture, [1] for playback */ if(file->f_mode & FMODE_READ) { CS_DBGOUT(CS_WAVE_READ, 2, printk("cs46xx: cs_open() FMODE_READ\n") ); if (card->states[0] == NULL) { state = card->states[0] = (struct cs_state *) kmalloc(sizeof(struct cs_state), GFP_KERNEL); if (state == NULL) return -ENOMEM; memset(state, 0, sizeof(struct cs_state)); dmabuf = &state->dmabuf; dmabuf->pbuf = (void *)get_free_page(GFP_KERNEL | GFP_DMA); if(dmabuf->pbuf==NULL) { kfree(state); card->states[0]=NULL; return -ENOMEM; } } else { state = card->states[0]; if(state->open_mode & FMODE_READ) return -EBUSY; } dmabuf->channel = card->alloc_rec_pcm_channel(card); if (dmabuf->channel == NULL) { kfree (card->states[0]); card->states[0] = NULL;; return -ENODEV; } /* Now turn on external AMP if needed */ state->card = card; state->card->active_ctrl(state->card,1); state->card->amplifier_ctrl(state->card,1); dmabuf->channel->state = state; /* initialize the virtual channel */ state->virt = 0; state->magic = CS_STATE_MAGIC; init_waitqueue_head(&dmabuf->wait); init_MUTEX(&state->open_sem); file->private_data = card; down(&state->open_sem); /* set default sample format. According to OSS Programmer's Guide /dev/dsp should be default to unsigned 8-bits, mono, with sample rate 8kHz and /dev/dspW will accept 16-bits sample */ /* Default input is 8bit mono */ dmabuf->fmt &= ~CS_FMT_MASK; dmabuf->type = CS_TYPE_ADC; dmabuf->ossfragshift = 0; dmabuf->ossmaxfrags = 0; dmabuf->subdivision = 0; cs_set_adc_rate(state, 8000); cs_set_divisor(dmabuf); state->open_mode |= FMODE_READ; up(&state->open_sem); MOD_INC_USE_COUNT; } if(file->f_mode & FMODE_WRITE) { CS_DBGOUT(CS_OPEN, 2, printk("cs46xx: cs_open() FMODE_WRITE\n") ); if (card->states[1] == NULL) { state = card->states[1] = (struct cs_state *) kmalloc(sizeof(struct cs_state), GFP_KERNEL); if (state == NULL) return -ENOMEM; memset(state, 0, sizeof(struct cs_state)); dmabuf = &state->dmabuf; dmabuf->pbuf = (void *)get_free_page(GFP_KERNEL | GFP_DMA); if(dmabuf->pbuf==NULL) { kfree(state); card->states[1]=NULL; return -ENOMEM; } } else { state = card->states[1]; if(state->open_mode & FMODE_WRITE) return -EBUSY; } dmabuf->channel = card->alloc_pcm_channel(card); if (dmabuf->channel == NULL) { kfree (card->states[1]); card->states[1] = NULL;; return -ENODEV; } /* Now turn on external AMP if needed */ state->card = card; state->card->active_ctrl(state->card,1); state->card->amplifier_ctrl(state->card,1); dmabuf->channel->state = state; /* initialize the virtual channel */ state->virt = 1; state->magic = CS_STATE_MAGIC; init_waitqueue_head(&dmabuf->wait); init_MUTEX(&state->open_sem); file->private_data = card; down(&state->open_sem); /* set default sample format. According to OSS Programmer's Guide /dev/dsp should be default to unsigned 8-bits, mono, with sample rate 8kHz and /dev/dspW will accept 16-bits sample */ /* Default output is 8bit mono. */ dmabuf->fmt &= ~CS_FMT_MASK; dmabuf->type = CS_TYPE_DAC; dmabuf->ossfragshift = 0; dmabuf->ossmaxfrags = 0; dmabuf->subdivision = 0; cs_set_dac_rate(state, 8000); cs_set_divisor(dmabuf); state->open_mode |= FMODE_WRITE; up(&state->open_sem); MOD_INC_USE_COUNT; if((ret = prog_dmabuf(state))) return ret; } CS_DBGOUT(CS_OPEN | CS_FUNCTION, 2, printk("cs46xx: cs_open()- 0\n") ); return 0; } static int cs_release(struct inode *inode, struct file *file) { struct cs_card *card = (struct cs_card *)file->private_data; struct dmabuf *dmabuf; struct cs_state *state; CS_DBGOUT(CS_RELEASE | CS_FUNCTION, 2, printk("cs46xx: cs_release()+ file=0x%x %s %s\n", (unsigned)file, file->f_mode & FMODE_WRITE ? "FMODE_WRITE" : "", file->f_mode & FMODE_READ ? "FMODE_READ" : "") ); if (!(file->f_mode & (FMODE_WRITE | FMODE_READ))) { return -EINVAL; } state = card->states[1]; if(state) { if ( (state->open_mode & FMODE_WRITE) & (file->f_mode & FMODE_WRITE) ) { CS_DBGOUT(CS_RELEASE, 2, printk("cs46xx: cs_release() FMODE_WRITE\n") ); dmabuf = &state->dmabuf; cs_clear_tail(state); drain_dac(state, file->f_flags & O_NONBLOCK); /* stop DMA state machine and free DMA buffers/channels */ down(&state->open_sem); stop_dac(state); dealloc_dmabuf(state); state->card->free_pcm_channel(state->card, dmabuf->channel->num); free_page((unsigned long)state->dmabuf.pbuf); /* we're covered by the open_sem */ up(&state->open_sem); state->card->states[state->virt] = NULL; state->open_mode &= (~file->f_mode) & (FMODE_READ|FMODE_WRITE); /* Now turn off external AMP if needed */ state->card->amplifier_ctrl(state->card, -1); state->card->active_ctrl(state->card, -1); kfree(state); } MOD_DEC_USE_COUNT; } state = card->states[0]; if(state) { if ( (state->open_mode & FMODE_READ) & (file->f_mode & FMODE_READ) ) { CS_DBGOUT(CS_RELEASE, 2, printk("cs46xx: cs_release() FMODE_READ\n") ); dmabuf = &state->dmabuf; down(&state->open_sem); stop_adc(state); dealloc_dmabuf(state); state->card->free_pcm_channel(state->card, dmabuf->channel->num); free_page((unsigned long)state->dmabuf.pbuf); /* we're covered by the open_sem */ up(&state->open_sem); state->card->states[state->virt] = NULL; state->open_mode &= (~file->f_mode) & (FMODE_READ|FMODE_WRITE); /* Now turn off external AMP if needed */ state->card->amplifier_ctrl(state->card, -1); state->card->active_ctrl(state->card, -1); kfree(state); } MOD_DEC_USE_COUNT; } CS_DBGOUT(CS_FUNCTION | CS_RELEASE, 2, printk("cs46xx: cs_release()- 0\n") ); return 0; } static /*const*/ struct file_operations cs461x_fops = { llseek: cs_llseek, read: cs_read, write: cs_write, poll: cs_poll, ioctl: cs_ioctl, mmap: cs_mmap, open: cs_open, release: cs_release, }; /* Write AC97 codec registers */ static u16 cs_ac97_get(struct ac97_codec *dev, u8 reg) { struct cs_card *card = dev->private_data; int count; /* * 1. Write ACCAD = Command Address Register = 46Ch for AC97 register address * 2. Write ACCDA = Command Data Register = 470h for data to write to AC97 * 3. Write ACCTL = Control Register = 460h for initiating the write * 4. Read ACCTL = 460h, DCV should be reset by now and 460h = 17h * 5. if DCV not cleared, break and return error * 6. Read ACSTS = Status Register = 464h, check VSTS bit */ cs461x_peekBA0(card, BA0_ACSDA); /* * Setup the AC97 control registers on the CS461x to send the * appropriate command to the AC97 to perform the read. * ACCAD = Command Address Register = 46Ch * ACCDA = Command Data Register = 470h * ACCTL = Control Register = 460h * set DCV - will clear when process completed * set CRW - Read command * set VFRM - valid frame enabled * set ESYN - ASYNC generation enabled * set RSTN - ARST# inactive, AC97 codec not reset */ cs461x_pokeBA0(card, BA0_ACCAD, reg); cs461x_pokeBA0(card, BA0_ACCDA, 0); cs461x_pokeBA0(card, BA0_ACCTL, ACCTL_DCV | ACCTL_CRW | ACCTL_VFRM | ACCTL_ESYN | ACCTL_RSTN); /* * Wait for the read to occur. */ for (count = 0; count < 500; count++) { /* * First, we want to wait for a short time. */ udelay(10); /* * Now, check to see if the read has completed. * ACCTL = 460h, DCV should be reset by now and 460h = 17h */ if (!(cs461x_peekBA0(card, BA0_ACCTL) & ACCTL_DCV)) break; } /* * Make sure the read completed. */ if (cs461x_peekBA0(card, BA0_ACCTL) & ACCTL_DCV) { printk(KERN_WARNING "cs461x: AC'97 read problem (ACCTL_DCV), reg = 0x%x\n", reg); return 0xffff; } /* * Wait for the valid status bit to go active. */ for (count = 0; count < 100; count++) { /* * Read the AC97 status register. * ACSTS = Status Register = 464h * VSTS - Valid Status */ if (cs461x_peekBA0(card, BA0_ACSTS) & ACSTS_VSTS) break; udelay(10); } /* * Make sure we got valid status. */ if (!(cs461x_peekBA0(card, BA0_ACSTS) & ACSTS_VSTS)) { printk(KERN_WARNING "cs461x: AC'97 read problem (ACSTS_VSTS), reg = 0x%x\n", reg); return 0xffff; } /* * Read the data returned from the AC97 register. * ACSDA = Status Data Register = 474h */ #if 0 printk("e) reg = 0x%x, val = 0x%x, BA0_ACCAD = 0x%x\n", reg, cs461x_peekBA0(card, BA0_ACSDA), cs461x_peekBA0(card, BA0_ACCAD)); #endif return cs461x_peekBA0(card, BA0_ACSDA); } static void cs_ac97_set(struct ac97_codec *dev, u8 reg, u16 val) { struct cs_card *card = dev->private_data; int count; int val2 = 0; if(reg == AC97_CD_VOL) { val2 = cs_ac97_get(dev, AC97_CD_VOL); } /* * 1. Write ACCAD = Command Address Register = 46Ch for AC97 register address * 2. Write ACCDA = Command Data Register = 470h for data to write to AC97 * 3. Write ACCTL = Control Register = 460h for initiating the write * 4. Read ACCTL = 460h, DCV should be reset by now and 460h = 07h * 5. if DCV not cleared, break and return error */ /* * Setup the AC97 control registers on the CS461x to send the * appropriate command to the AC97 to perform the read. * ACCAD = Command Address Register = 46Ch * ACCDA = Command Data Register = 470h * ACCTL = Control Register = 460h * set DCV - will clear when process completed * reset CRW - Write command * set VFRM - valid frame enabled * set ESYN - ASYNC generation enabled * set RSTN - ARST# inactive, AC97 codec not reset */ cs461x_pokeBA0(card, BA0_ACCAD, reg); cs461x_pokeBA0(card, BA0_ACCDA, val); cs461x_pokeBA0(card, BA0_ACCTL, ACCTL_DCV | ACCTL_VFRM | ACCTL_ESYN | ACCTL_RSTN); for (count = 0; count < 1000; count++) { /* * First, we want to wait for a short time. */ udelay(10); /* * Now, check to see if the write has completed. * ACCTL = 460h, DCV should be reset by now and 460h = 07h */ if (!(cs461x_peekBA0(card, BA0_ACCTL) & ACCTL_DCV)) break; } /* * Make sure the write completed. */ if (cs461x_peekBA0(card, BA0_ACCTL) & ACCTL_DCV) printk(KERN_WARNING "cs461x: AC'97 write problem, reg = 0x%x, val = 0x%x\n", reg, val); /* * Adjust power if the mixer is selected/deselected according * to the CD. * * IF the CD is a valid input source (mixer or direct) AND * the CD is not muted THEN power is needed * * We do two things. When record select changes the input to * add/remove the CD we adjust the power count if the CD is * unmuted. * * When the CD mute changes we adjust the power level if the * CD was a valid input. * * We also check for CD volume != 0, as the CD mute isn't * normally tweaked from userspace. */ /* CD mute change ? */ if(reg==AC97_CD_VOL) { /* Mute bit change ? */ if((val2^val)&0x8000 || ((val2 == 0x1f1f || val == 0x1f1f) && val2 != val)) { /* This is a hack but its cleaner than the alternatives. Right now card->ac97_codec[0] might be NULL as we are still doing codec setup. This does an early assignment to avoid the problem if it occurs */ if(card->ac97_codec[0]==NULL) card->ac97_codec[0]=dev; /* Mute on */ if(val&0x8000 || val == 0x1f1f) card->amplifier_ctrl(card, -1); else /* Mute off power on */ card->amplifier_ctrl(card, 1); } } } /* OSS /dev/mixer file operation methods */ static int cs_open_mixdev(struct inode *inode, struct file *file) { int i; int minor = MINOR(inode->i_rdev); struct cs_card *card = devs; for (card = devs; card != NULL; card = card->next) for (i = 0; i < NR_AC97; i++) if (card->ac97_codec[i] != NULL && card->ac97_codec[i]->dev_mixer == minor) goto match; if (!card) return -ENODEV; match: file->private_data = card->ac97_codec[i]; card->active_ctrl(card,1); MOD_INC_USE_COUNT; return 0; } static int cs_release_mixdev(struct inode *inode, struct file *file) { int minor = MINOR(inode->i_rdev); struct cs_card *card = devs; int i; for (card = devs; card != NULL; card = card->next) for (i = 0; i < NR_AC97; i++) if (card->ac97_codec[i] != NULL && card->ac97_codec[i]->dev_mixer == minor) goto match; if (!card) return -ENODEV; match: card->active_ctrl(card, -1); MOD_DEC_USE_COUNT; return 0; } static int cs_ioctl_mixdev(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { struct ac97_codec *codec = (struct ac97_codec *)file->private_data; #if CSDEBUG_INTERFACE int val; if( (cmd == SOUND_MIXER_CS_GETDBGMASK) || (cmd == SOUND_MIXER_CS_SETDBGMASK) || (cmd == SOUND_MIXER_CS_GETDBGLEVEL) || (cmd == SOUND_MIXER_CS_SETDBGLEVEL) ) { switch(cmd) { case SOUND_MIXER_CS_GETDBGMASK: return put_user(cs_debugmask, (unsigned long *)arg); case SOUND_MIXER_CS_GETDBGLEVEL: return put_user(cs_debuglevel, (unsigned long *)arg); case SOUND_MIXER_CS_SETDBGMASK: if (get_user(val, (unsigned long *)arg)) return -EFAULT; cs_debugmask = val; return 0; case SOUND_MIXER_CS_SETDBGLEVEL: if (get_user(val, (unsigned long *)arg)) return -EFAULT; cs_debuglevel = val; return 0; default: CS_DBGOUT(CS_ERROR, 1, printk(KERN_INFO "cs4281: mixer_ioctl(): ERROR unknown debug cmd\n") ); return 0; } } #endif return codec->mixer_ioctl(codec, cmd, arg); } static /*const*/ struct file_operations cs_mixer_fops = { llseek: cs_llseek, ioctl: cs_ioctl_mixdev, open: cs_open_mixdev, release: cs_release_mixdev, }; /* AC97 codec initialisation. */ static int __init cs_ac97_init(struct cs_card *card) { int num_ac97 = 0; int ready_2nd = 0; struct ac97_codec *codec; u16 eid; for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++) { if ((codec = kmalloc(sizeof(struct ac97_codec), GFP_KERNEL)) == NULL) return -ENOMEM; memset(codec, 0, sizeof(struct ac97_codec)); /* initialize some basic codec information, other fields will be filled in ac97_probe_codec */ codec->private_data = card; codec->id = num_ac97; codec->codec_read = cs_ac97_get; codec->codec_write = cs_ac97_set; if (ac97_probe_codec(codec) == 0) break; eid = cs_ac97_get(codec, AC97_EXTENDED_ID); if(eid==0xFFFFFF) { printk(KERN_WARNING "cs461x: no codec attached ?\n"); kfree(codec); break; } card->ac97_features = eid; if ((codec->dev_mixer = register_sound_mixer(&cs_mixer_fops, -1)) < 0) { printk(KERN_ERR "cs461x: couldn't register mixer!\n"); kfree(codec); break; } card->ac97_codec[num_ac97] = codec; /* if there is no secondary codec at all, don't probe any more */ if (!ready_2nd) return num_ac97+1; } return num_ac97; } /* * load the static image into the DSP */ #include "cs461x_image.h" static void cs461x_download_image(struct cs_card *card) { unsigned i, j, temp1, temp2, offset, count; unsigned char *pBA1 = ioremap(card->ba1_addr, 0x40000); for( i=0; i < CLEAR__COUNT; i++) { offset = ClrStat[i].BA1__DestByteOffset; count = ClrStat[i].BA1__SourceSize; for( temp1 = offset; temp1<(offset+count); temp1+=4 ); writel(0, pBA1+temp1); } for(i=0; i<FILL__COUNT; i++) { temp2 = FillStat[i].Offset; for(j=0; j<(FillStat[i].Size)/4; j++) { temp1 = (FillStat[i]).pFill[j]; writel(temp1, pBA1+temp2+j*4); } } iounmap(pBA1); } /* * Chip reset */ static void cs461x_reset(struct cs_card *card) { int idx; /* * Write the reset bit of the SP control register. */ cs461x_poke(card, BA1_SPCR, SPCR_RSTSP); /* * Write the control register. */ cs461x_poke(card, BA1_SPCR, SPCR_DRQEN); /* * Clear the trap registers. */ for (idx = 0; idx < 8; idx++) { cs461x_poke(card, BA1_DREG, DREG_REGID_TRAP_SELECT + idx); cs461x_poke(card, BA1_TWPR, 0xFFFF); } cs461x_poke(card, BA1_DREG, 0); /* * Set the frame timer to reflect the number of cycles per frame. */ cs461x_poke(card, BA1_FRMT, 0xadf); } static void cs461x_clear_serial_FIFOs(struct cs_card *card) { int idx, loop, powerdown = 0; unsigned int tmp; /* * See if the devices are powered down. If so, we must power them up first * or they will not respond. */ if (!((tmp = cs461x_peekBA0(card, BA0_CLKCR1)) & CLKCR1_SWCE)) { cs461x_pokeBA0(card, BA0_CLKCR1, tmp | CLKCR1_SWCE); powerdown = 1; } /* * We want to clear out the serial port FIFOs so we don't end up playing * whatever random garbage happens to be in them. We fill the sample FIFOS * with zero (silence). */ cs461x_pokeBA0(card, BA0_SERBWP, 0); /* * Fill all 256 sample FIFO locations. */ for (idx = 0; idx < 256; idx++) { /* * Make sure the previous FIFO write operation has completed. */ for (loop = 0; loop < 5; loop++) { udelay(50); if (!(cs461x_peekBA0(card, BA0_SERBST) & SERBST_WBSY)) break; } if (cs461x_peekBA0(card, BA0_SERBST) & SERBST_WBSY) { if (powerdown) cs461x_pokeBA0(card, BA0_CLKCR1, tmp); } /* * Write the serial port FIFO index. */ cs461x_pokeBA0(card, BA0_SERBAD, idx); /* * Tell the serial port to load the new value into the FIFO location. */ cs461x_pokeBA0(card, BA0_SERBCM, SERBCM_WRC); } /* * Now, if we powered up the devices, then power them back down again. * This is kinda ugly, but should never happen. */ if (powerdown) cs461x_pokeBA0(card, BA0_CLKCR1, tmp); } static void cs461x_powerup_dac(struct cs_card *card) { int count; unsigned int tmp; /* * Power on the DACs on the AC97 card. We turn off the DAC * powerdown bit and write the new value of the power control * register. */ tmp = cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL); if (tmp & 2) /* already */ return; cs_ac97_set(card->ac97_codec[0], AC97_POWER_CONTROL, tmp & 0xfdff); /* * Now, we wait until we sample a DAC ready state. */ for (count = 0; count < 32; count++) { /* * First, lets wait a short while to let things settle out a * bit, and to prevent retrying the read too quickly. */ udelay(50); /* * Read the current state of the power control register. */ if (cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) & 2) break; } /* * Check the status.. */ if (!(cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) & 2)) printk(KERN_WARNING "cs461x: powerup DAC failed\n"); } static void cs461x_powerup_adc(struct cs_card *card) { int count; unsigned int tmp; /* * Power on the ADCs on the AC97 card. We turn off the DAC * powerdown bit and write the new value of the power control * register. */ tmp = cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL); if (tmp & 1) /* already */ return; cs_ac97_set(card->ac97_codec[0], AC97_POWER_CONTROL, tmp & 0xfeff); /* * Now, we wait until we sample a ADC ready state. */ for (count = 0; count < 32; count++) { /* * First, lets wait a short while to let things settle out a * bit, and to prevent retrying the read too quickly. */ udelay(50); /* * Read the current state of the power control register. */ if (cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) & 1) break; } /* * Check the status.. */ if (!(cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) & 1)) printk(KERN_WARNING "cs461x: powerup ADC failed\n"); } static void cs461x_proc_start(struct cs_card *card) { int cnt; /* * Set the frame timer to reflect the number of cycles per frame. */ cs461x_poke(card, BA1_FRMT, 0xadf); /* * Turn on the run, run at frame, and DMA enable bits in the local copy of * the SP control register. */ cs461x_poke(card, BA1_SPCR, SPCR_RUN | SPCR_RUNFR | SPCR_DRQEN); /* * Wait until the run at frame bit resets itself in the SP control * register. */ for (cnt = 0; cnt < 25; cnt++) { udelay(50); if (!(cs461x_peek(card, BA1_SPCR) & SPCR_RUNFR)) break; } if (cs461x_peek(card, BA1_SPCR) & SPCR_RUNFR) printk(KERN_WARNING "cs461x: SPCR_RUNFR never reset\n"); } static void cs461x_proc_stop(struct cs_card *card) { /* * Turn off the run, run at frame, and DMA enable bits in the local copy of * the SP control register. */ cs461x_poke(card, BA1_SPCR, 0); } static int cs_hardware_init(struct cs_card *card) { unsigned long end_time; unsigned int tmp; /* * First, blast the clock control register to zero so that the PLL starts * out in a known state, and blast the master serial port control register * to zero so that the serial ports also start out in a known state. */ cs461x_pokeBA0(card, BA0_CLKCR1, 0); cs461x_pokeBA0(card, BA0_SERMC1, 0); /* * If we are in AC97 mode, then we must set the part to a host controlled * AC-link. Otherwise, we won't be able to bring up the link. */ cs461x_pokeBA0(card, BA0_SERACC, SERACC_HSP | SERACC_CODEC_TYPE_1_03); /* 1.03 card */ /* cs461x_pokeBA0(card, BA0_SERACC, SERACC_HSP | SERACC_CODEC_TYPE_2_0); */ /* 2.00 card */ /* * Drive the ARST# pin low for a minimum of 1uS (as defined in the AC97 * spec) and then drive it high. This is done for non AC97 modes since * there might be logic external to the CS461x that uses the ARST# line * for a reset. */ cs461x_pokeBA0(card, BA0_ACCTL, 0); udelay(50); cs461x_pokeBA0(card, BA0_ACCTL, ACCTL_RSTN); /* * The first thing we do here is to enable sync generation. As soon * as we start receiving bit clock, we'll start producing the SYNC * signal. */ cs461x_pokeBA0(card, BA0_ACCTL, ACCTL_ESYN | ACCTL_RSTN); /* * Now wait for a short while to allow the AC97 part to start * generating bit clock (so we don't try to start the PLL without an * input clock). */ mdelay(5); /* 1 should be enough ?? (and pigs might fly) */ /* * Set the serial port timing configuration, so that * the clock control circuit gets its clock from the correct place. */ cs461x_pokeBA0(card, BA0_SERMC1, SERMC1_PTC_AC97); /* * Write the selected clock control setup to the hardware. Do not turn on * SWCE yet (if requested), so that the devices clocked by the output of * PLL are not clocked until the PLL is stable. */ cs461x_pokeBA0(card, BA0_PLLCC, PLLCC_LPF_1050_2780_KHZ | PLLCC_CDR_73_104_MHZ); cs461x_pokeBA0(card, BA0_PLLM, 0x3a); cs461x_pokeBA0(card, BA0_CLKCR2, CLKCR2_PDIVS_8); /* * Power up the PLL. */ cs461x_pokeBA0(card, BA0_CLKCR1, CLKCR1_PLLP); /* * Wait until the PLL has stabilized. */ mdelay(5); /* Again 1 should be enough ?? */ /* * Turn on clocking of the core so that we can setup the serial ports. */ tmp = cs461x_peekBA0(card, BA0_CLKCR1) | CLKCR1_SWCE; cs461x_pokeBA0(card, BA0_CLKCR1, tmp); /* * Fill the serial port FIFOs with silence. */ cs461x_clear_serial_FIFOs(card); /* * Set the serial port FIFO pointer to the first sample in the FIFO. */ /* cs461x_pokeBA0(card, BA0_SERBSP, 0); */ /* * Write the serial port configuration to the part. The master * enable bit is not set until all other values have been written. */ cs461x_pokeBA0(card, BA0_SERC1, SERC1_SO1F_AC97 | SERC1_SO1EN); cs461x_pokeBA0(card, BA0_SERC2, SERC2_SI1F_AC97 | SERC1_SO1EN); cs461x_pokeBA0(card, BA0_SERMC1, SERMC1_PTC_AC97 | SERMC1_MSPE); mdelay(5); /* Shouldnt be needed ?? */ /* * Wait for the card ready signal from the AC97 card. */ end_time = jiffies + 3 * (HZ >> 2); do { /* * Read the AC97 status register to see if we've seen a CODEC READY * signal from the AC97 card. */ if (cs461x_peekBA0(card, BA0_ACSTS) & ACSTS_CRDY) break; current->state = TASK_UNINTERRUPTIBLE; schedule_timeout(1); } while (time_before(jiffies, end_time)); /* * Make sure CODEC is READY. */ if (!(cs461x_peekBA0(card, BA0_ACSTS) & ACSTS_CRDY)) { printk(KERN_WARNING "cs461x: create - never read card ready from AC'97\n"); printk(KERN_WARNING "cs461x: it is probably not a bug, try using the CS4232 driver\n"); return -EIO; } /* * Assert the vaid frame signal so that we can start sending commands * to the AC97 card. */ cs461x_pokeBA0(card, BA0_ACCTL, ACCTL_VFRM | ACCTL_ESYN | ACCTL_RSTN); /* * Wait until we've sampled input slots 3 and 4 as valid, meaning that * the card is pumping ADC data across the AC-link. */ end_time = jiffies + 3 * (HZ >> 2); do { /* * Read the input slot valid register and see if input slots 3 and * 4 are valid yet. */ if ((cs461x_peekBA0(card, BA0_ACISV) & (ACISV_ISV3 | ACISV_ISV4)) == (ACISV_ISV3 | ACISV_ISV4)) break; current->state = TASK_UNINTERRUPTIBLE; schedule_timeout(1); } while (time_before(jiffies, end_time)); /* * Make sure input slots 3 and 4 are valid. If not, then return * an error. */ if ((cs461x_peekBA0(card, BA0_ACISV) & (ACISV_ISV3 | ACISV_ISV4)) != (ACISV_ISV3 | ACISV_ISV4)) { printk(KERN_WARNING "cs461x: create - never read ISV3 & ISV4 from AC'97\n"); return -EIO; } /* * Now, assert valid frame and the slot 3 and 4 valid bits. This will * commense the transfer of digital audio data to the AC97 card. */ cs461x_pokeBA0(card, BA0_ACOSV, ACOSV_SLV3 | ACOSV_SLV4); /* * Power down the DAC and ADC. We will power them up (if) when we need * them. */ /* cs461x_pokeBA0(card, BA0_AC97_POWERDOWN, 0x300); */ /* * Turn off the Processor by turning off the software clock enable flag in * the clock control register. */ /* tmp = cs461x_peekBA0(card, BA0_CLKCR1) & ~CLKCR1_SWCE; */ /* cs461x_pokeBA0(card, BA0_CLKCR1, tmp); */ /* * Reset the processor. */ cs461x_reset(card); /* * Download the image to the processor. */ cs461x_download_image(card); /* * Stop playback DMA. */ tmp = cs461x_peek(card, BA1_PCTL); card->pctl = tmp & 0xffff0000; cs461x_poke(card, BA1_PCTL, tmp & 0x0000ffff); /* * Stop capture DMA. */ tmp = cs461x_peek(card, BA1_CCTL); card->cctl = tmp & 0x0000ffff; cs461x_poke(card, BA1_CCTL, tmp & 0xffff0000); /* initialize AC97 codec and register /dev/mixer */ if (cs_ac97_init(card) <= 0) return -EIO; mdelay(5); /* Do we need this ?? */ cs461x_powerup_adc(card); cs461x_powerup_dac(card); cs461x_proc_start(card); /* * Enable interrupts on the part. */ cs461x_pokeBA0(card, BA0_HICR, HICR_IEV | HICR_CHGM); tmp = cs461x_peek(card, BA1_PFIE); tmp &= ~0x0000f03f; cs461x_poke(card, BA1_PFIE, tmp); /* playback interrupt enable */ tmp = cs461x_peek(card, BA1_CIE); tmp &= ~0x0000003f; tmp |= 0x00000001; cs461x_poke(card, BA1_CIE, tmp); /* capture interrupt enable */ return 0; } /* install the driver, we do not allocate hardware channel nor DMA buffer now, they are defered untill "ACCESS" time (in prog_dmabuf called by open/read/write/ioctl/mmap) */ /* * Card subid table */ struct cs_card_type { u16 vendor; u16 id; char *name; void (*amp)(struct cs_card *, int); void (*active)(struct cs_card *, int); }; static struct cs_card_type __initdata cards[]={ {0x1489, 0x7001, "Genius Soundmaker 128 value", amp_none, NULL}, {0x5053, 0x3357, "Voyetra", amp_voyetra, NULL}, {0x1071, 0x6003, "Mitac MI6020/21", amp_voyetra, NULL}, /* Not sure if the 570 needs the clkrun hack */ {PCI_VENDOR_ID_IBM, 0x0132, "Thinkpad 570", amp_none, clkrun_hack}, {PCI_VENDOR_ID_IBM, 0x0153, "Thinkpad 600X/A20/T20", amp_none, clkrun_hack}, {PCI_VENDOR_ID_IBM, 0x1010, "Thinkpad 600E (unsupported)", NULL, NULL}, {0, 0, "Card without SSID set", NULL, NULL }, {0, 0, NULL, NULL, NULL} }; #ifdef CS46XX_PM static int cs46xx_pm_callback(struct pm_dev *dev, pm_request_t rqst, void *data) { struct cs_state *state = (struct cs_state *) dev->data; if (state) { switch(rqst) { case PM_RESUME: printk( KERN_DEBUG "cs46xx: PM resume request\n"); cs_hardware_init(state->card); break; case PM_SUSPEND: printk( KERN_DEBUG "cs46xx: PM suspend request\n"); stop_dac(state); resync_dma_ptrs(state); break; } } return 0; } #endif static int __init cs_install(struct pci_dev *pci_dev) { struct cs_card *card; struct cs_card_type *cp = &cards[0]; #ifdef CS46XX_PM struct pm_dev *pmdev; #endif u16 ss_card, ss_vendor; pci_read_config_word(pci_dev, PCI_SUBSYSTEM_VENDOR_ID, &ss_vendor); pci_read_config_word(pci_dev, PCI_SUBSYSTEM_ID, &ss_card); if ((card = kmalloc(sizeof(struct cs_card), GFP_KERNEL)) == NULL) { printk(KERN_ERR "cs461x: out of memory\n"); return -ENOMEM; } memset(card, 0, sizeof(*card)); card->ba0_addr = pci_dev->resource[0].start&PCI_BASE_ADDRESS_MEM_MASK; card->ba1_addr = pci_dev->resource[1].start&PCI_BASE_ADDRESS_MEM_MASK; card->pci_dev = pci_dev; card->irq = pci_dev->irq; card->magic = CS_CARD_MAGIC; spin_lock_init(&card->lock); pci_set_master(pci_dev); printk(KERN_INFO "cs461x: Card found at 0x%08lx and 0x%08lx, IRQ %d\n", card->ba0_addr, card->ba1_addr, card->irq); card->alloc_pcm_channel = cs_alloc_pcm_channel; card->alloc_rec_pcm_channel = cs_alloc_rec_pcm_channel; card->free_pcm_channel = cs_free_pcm_channel; card->amplifier_ctrl = amp_none; card->active_ctrl = amp_none; while (cp->name) { if(cp->vendor == ss_vendor && cp->id == ss_card) { card->amplifier_ctrl = cp->amp; if(cp->active) card->active_ctrl = cp->active; break; } cp++; } if (cp->name==NULL) { printk(KERN_INFO "cs461x: Unknown card (%04X:%04X) at 0x%08lx/0x%08lx, IRQ %d\n", ss_vendor, ss_card, card->ba0_addr, card->ba1_addr, card->irq); } else { printk(KERN_INFO "cs461x: %s at 0x%08lx/0x%08lx, IRQ %d\n", cp->name, card->ba0_addr, card->ba1_addr, card->irq); } if (card->amplifier_ctrl==NULL) { card->amplifier_ctrl = amp_none; card->active_ctrl = clkrun_hack; } if (external_amp == 1) { printk(KERN_INFO "cs461x: Crystal EAPD support forced on.\n"); card->amplifier_ctrl = amp_voyetra; } if (thinkpad == 1) { card->active_ctrl = clkrun_hack; printk(KERN_INFO "cs461x: Activating CLKRUN hack for Thinkpad.\n"); } card->active_ctrl(card, 1); /* claim our iospace and irq */ card->ba0 = ioremap(card->ba0_addr, CS461X_BA0_SIZE); card->ba1.name.data0 = ioremap(card->ba1_addr + BA1_SP_DMEM0, CS461X_BA1_DATA0_SIZE); card->ba1.name.data1 = ioremap(card->ba1_addr + BA1_SP_DMEM1, CS461X_BA1_DATA1_SIZE); card->ba1.name.pmem = ioremap(card->ba1_addr + BA1_SP_PMEM, CS461X_BA1_PRG_SIZE); card->ba1.name.reg = ioremap(card->ba1_addr + BA1_SP_REG, CS461X_BA1_REG_SIZE); CS_DBGOUT(CS_INIT, 4, printk("card->ba0=0x%.08x\n",(unsigned)card->ba0) ); CS_DBGOUT(CS_INIT, 4, printk("card->ba1=0x%.08x 0x%.08x 0x%.08x 0x%.08x\n", (unsigned)card->ba1.name.data0, (unsigned)card->ba1.name.data1, (unsigned)card->ba1.name.pmem, (unsigned)card->ba1.name.reg) ); if(card->ba0 == 0 || card->ba1.name.data0 == 0 || card->ba1.name.data1 == 0 || card->ba1.name.pmem == 0 || card->ba1.name.reg == 0) goto fail2; if (request_irq(card->irq, &cs_interrupt, SA_SHIRQ, "cs461x", card)) { printk(KERN_ERR "cs461x: unable to allocate irq %d\n", card->irq); goto fail2; } /* register /dev/dsp */ if ((card->dev_audio = register_sound_dsp(&cs461x_fops, -1)) < 0) { printk(KERN_ERR "cs461x: unable to register dsp\n"); goto fail; } /* register /dev/midi */ if((card->dev_midi = register_sound_midi(&cs_midi_fops, -1)) < 0) printk(KERN_ERR "cs461x: unable to register midi\n"); if (cs_hardware_init(card)<0) { unregister_sound_dsp(card->dev_audio); if(card->dev_midi) unregister_sound_midi(card->dev_midi); goto fail; } init_waitqueue_head(&card->midi.open_wait); init_MUTEX(&card->midi.open_sem); init_waitqueue_head(&card->midi.iwait); init_waitqueue_head(&card->midi.owait); card->next = devs; devs = card; cs461x_pokeBA0(card, BA0_MIDCR, MIDCR_MRST); cs461x_pokeBA0(card, BA0_MIDCR, 0); card->active_ctrl(card, -1); #ifdef CS46XX_PM pmdev = pm_register(PM_PCI_DEV, PM_PCI_ID(pci_dev), cs46xx_pm_callback); if (pmdev) pmdev->data = card; #endif return 0; fail: free_irq(card->irq, card); fail2: if(card->ba0) iounmap(card->ba0); if(card->ba1.name.data0) iounmap(card->ba1.name.data0); if(card->ba1.name.data1) iounmap(card->ba1.name.data1); if(card->ba1.name.pmem) iounmap(card->ba1.name.pmem); if(card->ba1.name.reg) iounmap(card->ba1.name.reg); kfree(card); return -ENODEV; } static void cs_remove(struct cs_card *card) { int i; unsigned int tmp; card->active_ctrl(card,1); tmp = cs461x_peek(card, BA1_PFIE); tmp &= ~0x0000f03f; tmp |= 0x00000010; cs461x_poke(card, BA1_PFIE, tmp); /* playback interrupt disable */ tmp = cs461x_peek(card, BA1_CIE); tmp &= ~0x0000003f; tmp |= 0x00000011; cs461x_poke(card, BA1_CIE, tmp); /* capture interrupt disable */ /* * Stop playback DMA. */ tmp = cs461x_peek(card, BA1_PCTL); cs461x_poke(card, BA1_PCTL, tmp & 0x0000ffff); /* * Stop capture DMA. */ tmp = cs461x_peek(card, BA1_CCTL); cs461x_poke(card, BA1_CCTL, tmp & 0xffff0000); /* * Reset the processor. */ cs461x_reset(card); cs461x_proc_stop(card); /* * Power down the DAC and ADC. We will power them up (if) when we need * them. */ cs_ac97_set(card->ac97_codec[0], AC97_POWER_CONTROL, 0x300); /* * Power down the PLL. */ cs461x_pokeBA0(card, BA0_CLKCR1, 0); /* * Turn off the Processor by turning off the software clock enable flag in * the clock control register. */ tmp = cs461x_peekBA0(card, BA0_CLKCR1) & ~CLKCR1_SWCE; cs461x_pokeBA0(card, BA0_CLKCR1, tmp); card->active_ctrl(card,-1); /* free hardware resources */ free_irq(card->irq, card); iounmap(card->ba0); iounmap(card->ba1.name.data0); iounmap(card->ba1.name.data1); iounmap(card->ba1.name.pmem); iounmap(card->ba1.name.reg); /* unregister audio devices */ for (i = 0; i < NR_AC97; i++) if (card->ac97_codec[i] != NULL) { unregister_sound_mixer(card->ac97_codec[i]->dev_mixer); kfree (card->ac97_codec[i]); } unregister_sound_dsp(card->dev_audio); if(card->dev_midi) unregister_sound_midi(card->dev_midi); kfree(card); } MODULE_AUTHOR("Alan Cox <alan@redhat.com>, Jaroslav Kysela, <audio@crystal.cirrus.com>"); MODULE_DESCRIPTION("Crystal SoundFusion Audio Support"); int __init cs_probe(void) { struct pci_dev *pcidev = NULL; int foundone=0; if (!pci_present()) /* No PCI bus in this machine! */ return -ENODEV; printk(KERN_INFO "Crystal 4280/461x + AC97 Audio, version " DRIVER_VERSION ", " __TIME__ " " __DATE__ "\n"); while( (pcidev = pci_find_device(PCI_VENDOR_ID_CIRRUS, 0x6001 , pcidev))!=NULL ) { if (cs_install(pcidev)==0) foundone++; } while( (pcidev = pci_find_device(PCI_VENDOR_ID_CIRRUS, 0x6003 , pcidev))!=NULL ) { if (cs_install(pcidev)==0) foundone++; } while( (pcidev = pci_find_device(PCI_VENDOR_ID_CIRRUS, 0x6004 , pcidev))!=NULL ) { if (cs_install(pcidev)==0) foundone++; } printk(KERN_INFO "cs461x: Found %d audio device(s).\n", foundone); return foundone; } int __init init_module(void) { if(cs_probe()==0) printk(KERN_ERR "cs461x: No devices found.\n"); return 0; } void __exit cleanup_module (void) { struct cs_card *next; #ifdef CS46XX_PM pm_unregister_all(cs46xx_pm_callback); #endif while(devs) { next=devs->next; cs_remove(devs); devs=next; } } MODULE_PARM(external_amp, "i"); MODULE_PARM(thinkpad, "i"); |