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freebsd-nq/sys/dev/sound/pci/cs4281.c

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/*
* Copyright (c) 2000 Orion Hodson <O.Hodson@cs.ucl.ac.uk>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHERIN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THEPOSSIBILITY OF
* SUCH DAMAGE.
*
* The order of pokes in the initiation sequence is based on Linux
* driver by Thomas Sailer, gw boynton (wesb@crystal.cirrus.com), tom
* woller (twoller@crystal.cirrus.com). Shingo Watanabe (nabe@nabechan.org)
* contributed towards power management.
*/
#include <dev/sound/pcm/sound.h>
#include <dev/sound/pcm/ac97.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#include <dev/sound/pci/cs4281.h>
SND_DECLARE_FILE("$FreeBSD$");
#define CS4281_BUFFER_SIZE 16384
/* Max fifo size for full duplex is 64 */
#define CS4281_FIFO_SIZE 15
/* DMA Engine Indices */
#define CS4281_DMA_PLAY 0
#define CS4281_DMA_REC 1
/* Misc */
#define MIN(x,y) (x) < (y) ? (x) : (y)
#define MAX(x,y) (x) > (y) ? (x) : (y)
#define inline __inline
#ifndef DEB
#define DEB(x) /* x */
#endif /* DEB */
/* ------------------------------------------------------------------------- */
/* Structures */
struct sc_info;
/* channel registers */
struct sc_chinfo {
struct sc_info *parent;
struct snd_dbuf *buffer;
struct pcm_channel *channel;
u_int32_t spd, fmt, bps, blksz;
int dma_setup, dma_active, dma_chan;
};
/* device private data */
struct sc_info {
device_t dev;
u_int32_t type;
bus_space_tag_t st;
bus_space_handle_t sh;
bus_dma_tag_t parent_dmat;
struct resource *reg, *irq, *mem;
int regtype, regid, irqid, memid;
void *ih;
int power;
struct sc_chinfo pch;
struct sc_chinfo rch;
};
/* -------------------------------------------------------------------- */
/* prototypes */
/* ADC/DAC control */
static u_int32_t adcdac_go(struct sc_chinfo *ch, u_int32_t go);
static void adcdac_prog(struct sc_chinfo *ch);
/* power management and interrupt control */
static void cs4281_intr(void *);
static int cs4281_power(struct sc_info *, int);
static int cs4281_init(struct sc_info *);
/* talk to the card */
static u_int32_t cs4281_rd(struct sc_info *, int);
static void cs4281_wr(struct sc_info *, int, u_int32_t);
/* misc */
static u_int8_t cs4281_rate_to_rv(u_int32_t);
static u_int32_t cs4281_format_to_dmr(u_int32_t);
static u_int32_t cs4281_format_to_bps(u_int32_t);
/* -------------------------------------------------------------------- */
/* formats (do not add formats without editing cs_fmt_tab) */
static u_int32_t cs4281_fmts[] = {
AFMT_U8,
AFMT_U8 | AFMT_STEREO,
AFMT_S8,
AFMT_S8 | AFMT_STEREO,
AFMT_S16_LE,
AFMT_S16_LE | AFMT_STEREO,
AFMT_U16_LE,
AFMT_U16_LE | AFMT_STEREO,
AFMT_S16_BE,
AFMT_S16_BE | AFMT_STEREO,
AFMT_U16_BE,
AFMT_U16_BE | AFMT_STEREO,
0
};
static struct pcmchan_caps cs4281_caps = {6024, 48000, cs4281_fmts, 0};
/* -------------------------------------------------------------------- */
/* Hardware */
static inline u_int32_t
cs4281_rd(struct sc_info *sc, int regno)
{
return bus_space_read_4(sc->st, sc->sh, regno);
}
static inline void
cs4281_wr(struct sc_info *sc, int regno, u_int32_t data)
{
bus_space_write_4(sc->st, sc->sh, regno, data);
DELAY(100);
}
static inline void
cs4281_clr4(struct sc_info *sc, int regno, u_int32_t mask)
{
u_int32_t r;
r = cs4281_rd(sc, regno);
cs4281_wr(sc, regno, r & ~mask);
}
static inline void
cs4281_set4(struct sc_info *sc, int regno, u_int32_t mask)
{
u_int32_t v;
v = cs4281_rd(sc, regno);
cs4281_wr(sc, regno, v | mask);
}
static int
cs4281_waitset(struct sc_info *sc, int regno, u_int32_t mask, int tries)
{
u_int32_t v;
while(tries > 0) {
DELAY(100);
v = cs4281_rd(sc, regno);
if ((v & mask) == mask) break;
tries --;
}
return tries;
}
static int
cs4281_waitclr(struct sc_info *sc, int regno, u_int32_t mask, int tries)
{
u_int32_t v;
while(tries > 0) {
DELAY(100);
v = ~ cs4281_rd(sc, regno);
if (v & mask) break;
tries --;
}
return tries;
}
/* ------------------------------------------------------------------------- */
/* Register value mapping functions */
static u_int32_t cs4281_rates[] = {48000, 44100, 22050, 16000, 11025, 8000};
#define CS4281_NUM_RATES sizeof(cs4281_rates)/sizeof(cs4281_rates[0])
static u_int8_t
cs4281_rate_to_rv(u_int32_t rate)
{
u_int32_t v;
for (v = 0; v < CS4281_NUM_RATES; v++) {
if (rate == cs4281_rates[v]) return v;
}
v = 1536000 / rate;
if (v > 255 || v < 32) v = 5; /* default to 8k */
return v;
}
static u_int32_t
cs4281_rv_to_rate(u_int8_t rv)
{
u_int32_t r;
if (rv < CS4281_NUM_RATES) return cs4281_rates[rv];
r = 1536000 / rv;
return r;
}
static inline u_int32_t
cs4281_format_to_dmr(u_int32_t format)
{
u_int32_t dmr = 0;
if (AFMT_8BIT & format) dmr |= CS4281PCI_DMR_SIZE8;
if (!(AFMT_STEREO & format)) dmr |= CS4281PCI_DMR_MONO;
if (AFMT_BIGENDIAN & format) dmr |= CS4281PCI_DMR_BEND;
if (!(AFMT_SIGNED & format)) dmr |= CS4281PCI_DMR_USIGN;
return dmr;
}
static inline u_int32_t
cs4281_format_to_bps(u_int32_t format)
{
return ((AFMT_8BIT & format) ? 1 : 2) * ((AFMT_STEREO & format) ? 2 : 1);
}
/* -------------------------------------------------------------------- */
/* ac97 codec */
static u_int32_t
cs4281_rdcd(kobj_t obj, void *devinfo, int regno)
{
struct sc_info *sc = (struct sc_info *)devinfo;
int codecno;
codecno = regno >> 8;
regno &= 0xff;
/* Remove old state */
cs4281_rd(sc, CS4281PCI_ACSDA);
/* Fill in AC97 register value request form */
cs4281_wr(sc, CS4281PCI_ACCAD, regno);
cs4281_wr(sc, CS4281PCI_ACCDA, 0);
cs4281_wr(sc, CS4281PCI_ACCTL, CS4281PCI_ACCTL_ESYN |
CS4281PCI_ACCTL_VFRM | CS4281PCI_ACCTL_DCV |
CS4281PCI_ACCTL_CRW);
/* Wait for read to complete */
if (cs4281_waitclr(sc, CS4281PCI_ACCTL, CS4281PCI_ACCTL_DCV, 250) == 0) {
device_printf(sc->dev, "cs4281_rdcd: DCV did not go\n");
return 0xffffffff;
}
/* Wait for valid status */
if (cs4281_waitset(sc, CS4281PCI_ACSTS, CS4281PCI_ACSTS_VSTS, 250) == 0) {
device_printf(sc->dev,"cs4281_rdcd: VSTS did not come\n");
return 0xffffffff;
}
return cs4281_rd(sc, CS4281PCI_ACSDA);
}
static void
cs4281_wrcd(kobj_t obj, void *devinfo, int regno, u_int32_t data)
{
struct sc_info *sc = (struct sc_info *)devinfo;
int codecno;
codecno = regno >> 8;
regno &= 0xff;
cs4281_wr(sc, CS4281PCI_ACCAD, regno);
cs4281_wr(sc, CS4281PCI_ACCDA, data);
cs4281_wr(sc, CS4281PCI_ACCTL, CS4281PCI_ACCTL_ESYN |
CS4281PCI_ACCTL_VFRM | CS4281PCI_ACCTL_DCV);
if (cs4281_waitclr(sc, CS4281PCI_ACCTL, CS4281PCI_ACCTL_DCV, 250) == 0) {
device_printf(sc->dev,"cs4281_wrcd: DCV did not go\n");
}
}
static kobj_method_t cs4281_ac97_methods[] = {
KOBJMETHOD(ac97_read, cs4281_rdcd),
KOBJMETHOD(ac97_write, cs4281_wrcd),
{ 0, 0 }
};
AC97_DECLARE(cs4281_ac97);
/* ------------------------------------------------------------------------- */
/* shared rec/play channel interface */
static void *
cs4281chan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir)
{
struct sc_info *sc = devinfo;
struct sc_chinfo *ch = (dir == PCMDIR_PLAY) ? &sc->pch : &sc->rch;
ch->buffer = b;
if (sndbuf_alloc(ch->buffer, sc->parent_dmat, CS4281_BUFFER_SIZE) != 0) {
return NULL;
}
ch->parent = sc;
ch->channel = c;
ch->fmt = AFMT_U8;
ch->spd = DSP_DEFAULT_SPEED;
ch->bps = 1;
ch->blksz = sndbuf_getsize(ch->buffer);
ch->dma_chan = (dir == PCMDIR_PLAY) ? CS4281_DMA_PLAY : CS4281_DMA_REC;
ch->dma_setup = 0;
adcdac_go(ch, 0);
adcdac_prog(ch);
return ch;
}
static int
cs4281chan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize)
{
struct sc_chinfo *ch = data;
u_int32_t go;
go = adcdac_go(ch, 0);
/* 2 interrupts are possible and used in buffer (half-empty,empty),
* hence factor of 2. */
ch->blksz = MIN(blocksize, CS4281_BUFFER_SIZE / 2);
sndbuf_resize(ch->buffer, 2, ch->blksz);
ch->dma_setup = 0;
adcdac_prog(ch);
adcdac_go(ch, go);
DEB(printf("cs4281chan_setblocksize: bufsz %d Setting %d\n", blocksize, ch->blksz));
return ch->blksz;
}
static int
cs4281chan_setspeed(kobj_t obj, void *data, u_int32_t speed)
{
struct sc_chinfo *ch = data;
struct sc_info *sc = ch->parent;
u_int32_t go, v, r;
go = adcdac_go(ch, 0); /* pause */
r = (ch->dma_chan == CS4281_DMA_PLAY) ? CS4281PCI_DACSR : CS4281PCI_ADCSR;
v = cs4281_rate_to_rv(speed);
cs4281_wr(sc, r, v);
adcdac_go(ch, go); /* unpause */
ch->spd = cs4281_rv_to_rate(v);
return ch->spd;
}
static int
cs4281chan_setformat(kobj_t obj, void *data, u_int32_t format)
{
struct sc_chinfo *ch = data;
struct sc_info *sc = ch->parent;
u_int32_t v, go;
go = adcdac_go(ch, 0); /* pause */
if (ch->dma_chan == CS4281_DMA_PLAY)
v = CS4281PCI_DMR_TR_PLAY;
else
v = CS4281PCI_DMR_TR_REC;
v |= CS4281PCI_DMR_DMA | CS4281PCI_DMR_AUTO;
v |= cs4281_format_to_dmr(format);
cs4281_wr(sc, CS4281PCI_DMR(ch->dma_chan), v);
adcdac_go(ch, go); /* unpause */
ch->fmt = format;
ch->bps = cs4281_format_to_bps(format);
ch->dma_setup = 0;
return 0;
}
static int
cs4281chan_getptr(kobj_t obj, void *data)
{
struct sc_chinfo *ch = data;
struct sc_info *sc = ch->parent;
u_int32_t dba, dca, ptr;
int sz;
sz = sndbuf_getsize(ch->buffer);
dba = cs4281_rd(sc, CS4281PCI_DBA(ch->dma_chan));
dca = cs4281_rd(sc, CS4281PCI_DCA(ch->dma_chan));
ptr = (dca - dba + sz) % sz;
return ptr;
}
static int
cs4281chan_trigger(kobj_t obj, void *data, int go)
{
struct sc_chinfo *ch = data;
switch(go) {
case PCMTRIG_START:
adcdac_prog(ch);
adcdac_go(ch, 1);
break;
case PCMTRIG_ABORT:
adcdac_go(ch, 0);
break;
default:
break;
}
/* return 0 if ok */
return 0;
}
static struct pcmchan_caps *
cs4281chan_getcaps(kobj_t obj, void *data)
{
return &cs4281_caps;
}
static kobj_method_t cs4281chan_methods[] = {
KOBJMETHOD(channel_init, cs4281chan_init),
KOBJMETHOD(channel_setformat, cs4281chan_setformat),
KOBJMETHOD(channel_setspeed, cs4281chan_setspeed),
KOBJMETHOD(channel_setblocksize, cs4281chan_setblocksize),
KOBJMETHOD(channel_trigger, cs4281chan_trigger),
KOBJMETHOD(channel_getptr, cs4281chan_getptr),
KOBJMETHOD(channel_getcaps, cs4281chan_getcaps),
{ 0, 0 }
};
CHANNEL_DECLARE(cs4281chan);
/* -------------------------------------------------------------------- */
/* ADC/DAC control */
/* adcdac_go enables/disable DMA channel, returns non-zero if DMA was
* active before call */
static u_int32_t
adcdac_go(struct sc_chinfo *ch, u_int32_t go)
{
struct sc_info *sc = ch->parent;
u_int32_t going;
going = !(cs4281_rd(sc, CS4281PCI_DCR(ch->dma_chan)) & CS4281PCI_DCR_MSK);
if (go)
cs4281_clr4(sc, CS4281PCI_DCR(ch->dma_chan), CS4281PCI_DCR_MSK);
else
cs4281_set4(sc, CS4281PCI_DCR(ch->dma_chan), CS4281PCI_DCR_MSK);
cs4281_wr(sc, CS4281PCI_HICR, CS4281PCI_HICR_EOI);
return going;
}
static void
adcdac_prog(struct sc_chinfo *ch)
{
struct sc_info *sc = ch->parent;
u_int32_t go;
if (!ch->dma_setup) {
go = adcdac_go(ch, 0);
cs4281_wr(sc, CS4281PCI_DBA(ch->dma_chan),
vtophys(sndbuf_getbuf(ch->buffer)));
cs4281_wr(sc, CS4281PCI_DBC(ch->dma_chan),
sndbuf_getsize(ch->buffer) / ch->bps - 1);
ch->dma_setup = 1;
adcdac_go(ch, go);
}
}
/* -------------------------------------------------------------------- */
/* The interrupt handler */
static void
cs4281_intr(void *p)
{
struct sc_info *sc = (struct sc_info *)p;
u_int32_t hisr;
hisr = cs4281_rd(sc, CS4281PCI_HISR);
if (hisr == 0) return;
if (hisr & CS4281PCI_HISR_DMA(CS4281_DMA_PLAY)) {
chn_intr(sc->pch.channel);
cs4281_rd(sc, CS4281PCI_HDSR(CS4281_DMA_PLAY)); /* Clear interrupt */
}
if (hisr & CS4281PCI_HISR_DMA(CS4281_DMA_REC)) {
chn_intr(sc->rch.channel);
cs4281_rd(sc, CS4281PCI_HDSR(CS4281_DMA_REC)); /* Clear interrupt */
}
/* Signal End-of-Interrupt */
cs4281_wr(sc, CS4281PCI_HICR, CS4281PCI_HICR_EOI);
}
/* -------------------------------------------------------------------- */
/* power management related */
static int
cs4281_power(struct sc_info *sc, int state)
{
switch (state) {
case 0:
/* Permit r/w access to all BA0 registers */
cs4281_wr(sc, CS4281PCI_CWPR, CS4281PCI_CWPR_MAGIC);
/* Power on */
cs4281_clr4(sc, CS4281PCI_EPPMC, CS4281PCI_EPPMC_FPDN);
break;
case 3:
/* Power off card and codec */
cs4281_set4(sc, CS4281PCI_EPPMC, CS4281PCI_EPPMC_FPDN);
cs4281_clr4(sc, CS4281PCI_SPMC, CS4281PCI_SPMC_RSTN);
break;
}
DEB(printf("cs4281_power %d -> %d\n", sc->power, state));
sc->power = state;
return 0;
}
static int
cs4281_init(struct sc_info *sc)
{
u_int32_t i, v;
/* (0) Blast clock register and serial port */
cs4281_wr(sc, CS4281PCI_CLKCR1, 0);
cs4281_wr(sc, CS4281PCI_SERMC, 0);
/* (1) Make ESYN 0 to turn sync pulse on AC97 link */
cs4281_wr(sc, CS4281PCI_ACCTL, 0);
DELAY(50);
/* (2) Effect Reset */
cs4281_wr(sc, CS4281PCI_SPMC, 0);
DELAY(100);
cs4281_wr(sc, CS4281PCI_SPMC, CS4281PCI_SPMC_RSTN);
/* Wait 50ms for ABITCLK to become stable */
DELAY(50000);
/* (3) Enable Sound System Clocks */
cs4281_wr(sc, CS4281PCI_CLKCR1, CS4281PCI_CLKCR1_DLLP);
DELAY(50000); /* Wait for PLL to stabilize */
cs4281_wr(sc, CS4281PCI_CLKCR1,
CS4281PCI_CLKCR1_DLLP | CS4281PCI_CLKCR1_SWCE);
/* (4) Power Up - this combination is essential. */
cs4281_set4(sc, CS4281PCI_SSPM,
CS4281PCI_SSPM_ACLEN | CS4281PCI_SSPM_PSRCEN |
CS4281PCI_SSPM_CSRCEN | CS4281PCI_SSPM_MIXEN);
/* (5) Wait for clock stabilization */
if (cs4281_waitset(sc,
CS4281PCI_CLKCR1,
CS4281PCI_CLKCR1_DLLRDY,
250) == 0) {
device_printf(sc->dev, "Clock stabilization failed\n");
return -1;
}
/* (6) Enable ASYNC generation. */
cs4281_wr(sc, CS4281PCI_ACCTL,CS4281PCI_ACCTL_ESYN);
/* Wait to allow AC97 to start generating clock bit */
DELAY(50000);
/* Set AC97 timing */
cs4281_wr(sc, CS4281PCI_SERMC, CS4281PCI_SERMC_PTC_AC97);
/* (7) Wait for AC97 ready signal */
if (cs4281_waitset(sc, CS4281PCI_ACSTS, CS4281PCI_ACSTS_CRDY, 250) == 0) {
device_printf(sc->dev, "codec did not avail\n");
return -1;
}
/* (8) Assert valid frame signal to begin sending commands to
* AC97 codec */
cs4281_wr(sc,
CS4281PCI_ACCTL,
CS4281PCI_ACCTL_VFRM | CS4281PCI_ACCTL_ESYN);
/* (9) Wait for codec calibration */
for(i = 0 ; i < 1000; i++) {
DELAY(10000);
v = cs4281_rdcd(0, sc, AC97_REG_POWER);
if ((v & 0x0f) == 0x0f) {
break;
}
}
if (i == 1000) {
device_printf(sc->dev, "codec failed to calibrate\n");
return -1;
}
/* (10) Set AC97 timing */
cs4281_wr(sc, CS4281PCI_SERMC, CS4281PCI_SERMC_PTC_AC97);
/* (11) Wait for valid data to arrive */
if (cs4281_waitset(sc,
CS4281PCI_ACISV,
CS4281PCI_ACISV_ISV(3) | CS4281PCI_ACISV_ISV(4),
10000) == 0) {
device_printf(sc->dev, "cs4281 never got valid data\n");
return -1;
}
/* (12) Start digital data transfer of audio data to codec */
cs4281_wr(sc,
CS4281PCI_ACOSV,
CS4281PCI_ACOSV_SLV(3) | CS4281PCI_ACOSV_SLV(4));
/* Set Master and headphone to max */
cs4281_wrcd(0, sc, AC97_MIX_PHONES, 0);
cs4281_wrcd(0, sc, AC97_MIX_MASTER, 0);
/* Power on the DAC */
v = cs4281_rdcd(0, sc, AC97_REG_POWER) & 0xfdff;
cs4281_wrcd(0, sc, AC97_REG_POWER, v);
/* Wait until DAC state ready */
for(i = 0; i < 320; i++) {
DELAY(100);
v = cs4281_rdcd(0, sc, AC97_REG_POWER);
if (v & 0x02) break;
}
/* Power on the ADC */
v = cs4281_rdcd(0, sc, AC97_REG_POWER) & 0xfeff;
cs4281_wrcd(0, sc, AC97_REG_POWER, v);
/* Wait until ADC state ready */
for(i = 0; i < 320; i++) {
DELAY(100);
v = cs4281_rdcd(0, sc, AC97_REG_POWER);
if (v & 0x01) break;
}
/* FIFO configuration (driver is DMA orientated, implicit FIFO) */
/* Play FIFO */
v = CS4281PCI_FCR_RS(CS4281PCI_RPCM_PLAY_SLOT) |
CS4281PCI_FCR_LS(CS4281PCI_LPCM_PLAY_SLOT) |
CS4281PCI_FCR_SZ(CS4281_FIFO_SIZE)|
CS4281PCI_FCR_OF(0);
cs4281_wr(sc, CS4281PCI_FCR(CS4281_DMA_PLAY), v);
cs4281_wr(sc, CS4281PCI_FCR(CS4281_DMA_PLAY), v | CS4281PCI_FCR_FEN);
/* Record FIFO */
v = CS4281PCI_FCR_RS(CS4281PCI_RPCM_REC_SLOT) |
CS4281PCI_FCR_LS(CS4281PCI_LPCM_REC_SLOT) |
CS4281PCI_FCR_SZ(CS4281_FIFO_SIZE)|
CS4281PCI_FCR_OF(CS4281_FIFO_SIZE + 1);
cs4281_wr(sc, CS4281PCI_FCR(CS4281_DMA_REC), v | CS4281PCI_FCR_PSH);
cs4281_wr(sc, CS4281PCI_FCR(CS4281_DMA_REC), v | CS4281PCI_FCR_FEN);
/* Match AC97 slots to FIFOs */
v = CS4281PCI_SRCSA_PLSS(CS4281PCI_LPCM_PLAY_SLOT) |
CS4281PCI_SRCSA_PRSS(CS4281PCI_RPCM_PLAY_SLOT) |
CS4281PCI_SRCSA_CLSS(CS4281PCI_LPCM_REC_SLOT) |
CS4281PCI_SRCSA_CRSS(CS4281PCI_RPCM_REC_SLOT);
cs4281_wr(sc, CS4281PCI_SRCSA, v);
/* Set Auto-Initialize and set directions */
cs4281_wr(sc,
CS4281PCI_DMR(CS4281_DMA_PLAY),
CS4281PCI_DMR_DMA |
CS4281PCI_DMR_AUTO |
CS4281PCI_DMR_TR_PLAY);
cs4281_wr(sc,
CS4281PCI_DMR(CS4281_DMA_REC),
CS4281PCI_DMR_DMA |
CS4281PCI_DMR_AUTO |
CS4281PCI_DMR_TR_REC);
/* Enable half and empty buffer interrupts keeping DMA paused */
cs4281_wr(sc,
CS4281PCI_DCR(CS4281_DMA_PLAY),
CS4281PCI_DCR_TCIE | CS4281PCI_DCR_HTCIE | CS4281PCI_DCR_MSK);
cs4281_wr(sc,
CS4281PCI_DCR(CS4281_DMA_REC),
CS4281PCI_DCR_TCIE | CS4281PCI_DCR_HTCIE | CS4281PCI_DCR_MSK);
/* Enable Interrupts */
cs4281_clr4(sc,
CS4281PCI_HIMR,
CS4281PCI_HIMR_DMAI |
CS4281PCI_HIMR_DMA(CS4281_DMA_PLAY) |
CS4281PCI_HIMR_DMA(CS4281_DMA_REC));
/* Set playback volume */
cs4281_wr(sc, CS4281PCI_PPLVC, 7);
cs4281_wr(sc, CS4281PCI_PPRVC, 7);
return 0;
}
/* -------------------------------------------------------------------- */
/* Probe and attach the card */
static int
cs4281_pci_probe(device_t dev)
{
char *s = NULL;
switch (pci_get_devid(dev)) {
case CS4281_PCI_ID:
s = "Crystal Semiconductor CS4281";
break;
}
if (s)
device_set_desc(dev, s);
return s ? 0 : ENXIO;
}
static int
cs4281_pci_attach(device_t dev)
{
struct sc_info *sc;
struct ac97_info *codec = NULL;
u_int32_t data;
char status[SND_STATUSLEN];
if ((sc = malloc(sizeof(*sc), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL) {
device_printf(dev, "cannot allocate softc\n");
return ENXIO;
}
sc->dev = dev;
sc->type = pci_get_devid(dev);
data = pci_read_config(dev, PCIR_COMMAND, 2);
data |= (PCIM_CMD_PORTEN | PCIM_CMD_MEMEN | PCIM_CMD_BUSMASTEREN);
pci_write_config(dev, PCIR_COMMAND, data, 2);
#if __FreeBSD_version > 500000
if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
/* Reset the power state. */
device_printf(dev, "chip is in D%d power mode "
"-- setting to D0\n", pci_get_powerstate(dev));
pci_set_powerstate(dev, PCI_POWERSTATE_D0);
}
#else
data = pci_read_config(dev, CS4281PCI_PMCS_OFFSET, 4);
if (data & CS4281PCI_PMCS_PS_MASK) {
/* Reset the power state. */
device_printf(dev, "chip is in D%d power mode "
"-- setting to D0\n",
data & CS4281PCI_PMCS_PS_MASK);
pci_write_config(dev, CS4281PCI_PMCS_OFFSET,
data & ~CS4281PCI_PMCS_PS_MASK, 4);
}
#endif
sc->regid = PCIR_MAPS;
sc->regtype = SYS_RES_MEMORY;
sc->reg = bus_alloc_resource(dev, sc->regtype, &sc->regid,
0, ~0, CS4281PCI_BA0_SIZE, RF_ACTIVE);
if (!sc->reg) {
sc->regtype = SYS_RES_IOPORT;
sc->reg = bus_alloc_resource(dev, sc->regtype, &sc->regid,
0, ~0, CS4281PCI_BA0_SIZE, RF_ACTIVE);
if (!sc->reg) {
device_printf(dev, "unable to allocate register space\n");
goto bad;
}
}
sc->st = rman_get_bustag(sc->reg);
sc->sh = rman_get_bushandle(sc->reg);
sc->memid = PCIR_MAPS + 4;
sc->mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &sc->memid, 0,
~0, CS4281PCI_BA1_SIZE, RF_ACTIVE);
if (sc->mem == NULL) {
device_printf(dev, "unable to allocate fifo space\n");
goto bad;
}
sc->irqid = 0;
sc->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &sc->irqid,
0, ~0, 1, RF_ACTIVE | RF_SHAREABLE);
if (!sc->irq) {
device_printf(dev, "unable to allocate interrupt\n");
goto bad;
}
if (snd_setup_intr(dev, sc->irq, 0, cs4281_intr, sc, &sc->ih)) {
device_printf(dev, "unable to setup interrupt\n");
goto bad;
}
if (bus_dma_tag_create(/*parent*/NULL, /*alignment*/2, /*boundary*/0,
/*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
/*highaddr*/BUS_SPACE_MAXADDR,
/*filter*/NULL, /*filterarg*/NULL,
/*maxsize*/CS4281_BUFFER_SIZE, /*nsegments*/1,
/*maxsegz*/0x3ffff,
/*flags*/0, &sc->parent_dmat) != 0) {
device_printf(dev, "unable to create dma tag\n");
goto bad;
}
/* power up */
cs4281_power(sc, 0);
/* init chip */
if (cs4281_init(sc) == -1) {
device_printf(dev, "unable to initialize the card\n");
goto bad;
}
/* create/init mixer */
codec = AC97_CREATE(dev, sc, cs4281_ac97);
if (codec == NULL)
goto bad;
mixer_init(dev, ac97_getmixerclass(), codec);
if (pcm_register(dev, sc, 1, 1))
goto bad;
pcm_addchan(dev, PCMDIR_PLAY, &cs4281chan_class, sc);
pcm_addchan(dev, PCMDIR_REC, &cs4281chan_class, sc);
snprintf(status, SND_STATUSLEN, "at %s 0x%lx irq %ld",
(sc->regtype == SYS_RES_IOPORT)? "io" : "memory",
rman_get_start(sc->reg), rman_get_start(sc->irq));
pcm_setstatus(dev, status);
return 0;
bad:
if (codec)
ac97_destroy(codec);
if (sc->reg)
bus_release_resource(dev, sc->regtype, sc->regid, sc->reg);
if (sc->mem)
bus_release_resource(dev, SYS_RES_MEMORY, sc->memid, sc->mem);
if (sc->ih)
bus_teardown_intr(dev, sc->irq, sc->ih);
if (sc->irq)
bus_release_resource(dev, SYS_RES_IRQ, sc->irqid, sc->irq);
if (sc->parent_dmat)
bus_dma_tag_destroy(sc->parent_dmat);
free(sc, M_DEVBUF);
return ENXIO;
}
static int
cs4281_pci_detach(device_t dev)
{
int r;
struct sc_info *sc;
r = pcm_unregister(dev);
if (r)
return r;
sc = pcm_getdevinfo(dev);
/* power off */
cs4281_power(sc, 3);
bus_release_resource(dev, sc->regtype, sc->regid, sc->reg);
bus_release_resource(dev, SYS_RES_MEMORY, sc->memid, sc->mem);
bus_teardown_intr(dev, sc->irq, sc->ih);
bus_release_resource(dev, SYS_RES_IRQ, sc->irqid, sc->irq);
bus_dma_tag_destroy(sc->parent_dmat);
free(sc, M_DEVBUF);
return 0;
}
static int
cs4281_pci_suspend(device_t dev)
{
struct sc_info *sc;
sc = pcm_getdevinfo(dev);
sc->rch.dma_active = adcdac_go(&sc->rch, 0);
sc->pch.dma_active = adcdac_go(&sc->pch, 0);
cs4281_power(sc, 3);
return 0;
}
static int
cs4281_pci_resume(device_t dev)
{
struct sc_info *sc;
sc = pcm_getdevinfo(dev);
/* power up */
cs4281_power(sc, 0);
/* initialize chip */
if (cs4281_init(sc) == -1) {
device_printf(dev, "unable to reinitialize the card\n");
return ENXIO;
}
/* restore mixer state */
if (mixer_reinit(dev) == -1) {
device_printf(dev, "unable to reinitialize the mixer\n");
return ENXIO;
}
/* restore chip state */
cs4281chan_setspeed(NULL, &sc->rch, sc->rch.spd);
cs4281chan_setblocksize(NULL, &sc->rch, sc->rch.blksz);
cs4281chan_setformat(NULL, &sc->rch, sc->rch.fmt);
adcdac_go(&sc->rch, sc->rch.dma_active);
cs4281chan_setspeed(NULL, &sc->pch, sc->pch.spd);
cs4281chan_setblocksize(NULL, &sc->pch, sc->pch.blksz);
cs4281chan_setformat(NULL, &sc->pch, sc->pch.fmt);
adcdac_go(&sc->pch, sc->pch.dma_active);
return 0;
}
static device_method_t cs4281_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, cs4281_pci_probe),
DEVMETHOD(device_attach, cs4281_pci_attach),
DEVMETHOD(device_detach, cs4281_pci_detach),
DEVMETHOD(device_suspend, cs4281_pci_suspend),
DEVMETHOD(device_resume, cs4281_pci_resume),
{ 0, 0 }
};
static driver_t cs4281_driver = {
"pcm",
cs4281_methods,
PCM_SOFTC_SIZE,
};
DRIVER_MODULE(snd_cs4281, pci, cs4281_driver, pcm_devclass, 0, 0);
MODULE_DEPEND(snd_cs4281, snd_pcm, PCM_MINVER, PCM_PREFVER, PCM_MAXVER);
MODULE_VERSION(snd_cs4281, 1);
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