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NetBSD/sys/arch/arm/iomd/lmcaudio.c

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/* $NetBSD: lmcaudio.c,v 1.4 2001/11/27 01:03:53 thorpej Exp $ */
/*
* Copyright (c) 1996, Danny C Tsen.
* Copyright (c) 1996, VLSI Technology Inc. All Rights Reserved.
* Copyright (c) 1995 Melvin Tang-Richardson
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the RiscBSD team.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/*
* audio driver for lmc1982
*
* Interfaces with the NetBSD generic audio driver to provide SUN
* /dev/audio (partial) compatibility.
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <sys/audioio.h>
#include <sys/errno.h>
#include <sys/systm.h>
#include <sys/callout.h>
#include <sys/kernel.h>
#include <uvm/uvm_extern.h>
#include <dev/audio_if.h>
#include <machine/intr.h>
#include <machine/vidc.h>
#include <arm/arm32/katelib.h>
#include <arm/iomd/iomdreg.h>
#include <arm/iomd/iomdvar.h>
#include <arm/mainbus/mainbus.h>
#include <arm/iomd/waveform.h>
#include "lmcaudio.h"
#include <arm/iomd/lmc1982.h>
struct audio_general {
vm_offset_t silence;
vm_offset_t beep;
irqhandler_t ih;
void (*intr) ();
void *arg;
vm_offset_t next_cur;
vm_offset_t next_end;
void (*next_intr) ();
void *next_arg;
int buffer;
int in_progress;
int open;
int drain;
} ag;
static struct callout ag_drain_ch = CALLOUT_INITIALIZER;
struct lmcaudio_softc {
struct device device;
int iobase;
int open;
};
int lmcaudio_probe __P((struct device *parent, struct cfdata *cf, void *aux));
void lmcaudio_attach __P((struct device *parent, struct device *self, void *aux));
int lmcaudio_open __P((void *addr, int flags));
void lmcaudio_close __P((void *addr));
int lmcaudio_drain __P((void *addr));
void lmcaudio_timeout __P((void *arg));
int lmcaudio_intr __P((void *arg));
int lmcaudio_dma_program __P((vm_offset_t cur, vm_offset_t end, void (*intr)(), void *arg));
void lmcaudio_dummy_routine __P((void *arg));
int lmcaudio_rate __P((int rate));
void lmcaudio_shutdown __P((void));
struct cfattach lmcaudio_ca = {
sizeof(struct lmcaudio_softc), lmcaudio_probe, lmcaudio_attach
};
int curr_rate = 11;
int lmcaudio_query_encoding __P((void *, struct audio_encoding *));
int lmcaudio_set_params __P((void *, int, int, struct audio_params *, struct audio_params *));
int lmcaudio_round_blocksize __P((void *, int));
int lmcaudio_start_output __P((void *, void *, int, void (*)(), void *));
int lmcaudio_start_input __P((void *, void *, int, void (*)(), void *));
int lmcaudio_halt_output __P((void *));
int lmcaudio_halt_input __P((void *));
int lmcaudio_speaker_ctl __P((void *, int));
int lmcaudio_getdev __P((void *, struct audio_device *));
int lmcaudio_set_port __P((void *, mixer_ctrl_t *));
int lmcaudio_get_port __P((void *, mixer_ctrl_t *));
int lmcaudio_query_devinfo __P((void *, mixer_devinfo_t *));
int lmcaudio_get_props __P((void *));
struct audio_device lmcaudio_device = {
"LMCAudio 16-bit",
"x",
"lmcaudio"
};
struct audio_hw_if lmcaudio_hw_if = {
lmcaudio_open,
lmcaudio_close,
lmcaudio_drain,
lmcaudio_query_encoding,
lmcaudio_set_params,
lmcaudio_round_blocksize,
0,
0,
0,
lmcaudio_start_output,
lmcaudio_start_input,
lmcaudio_halt_output,
lmcaudio_halt_input,
lmcaudio_speaker_ctl,
lmcaudio_getdev,
0,
lmcaudio_set_port,
lmcaudio_get_port,
lmcaudio_query_devinfo,
0,
0,
0,
0,
lmcaudio_get_props,
0,
0,
0,
};
void
lmcaudio_beep_generate()
{
lmcaudio_dma_program(ag.beep, ag.beep+sizeof(beep_waveform)-16,
lmcaudio_dummy_routine, NULL);
}
static int sdma_channel;
int
lmcaudio_probe(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
int id;
id = IOMD_ID;
switch (id) {
case RPC600_IOMD_ID:
return(0);
case ARM7500_IOC_ID:
case ARM7500FE_IOC_ID:
return(0);
default:
printf("lmcaudio: Unknown IOMD id=%04x", id);
break;
}
return (0);
}
void
lmcaudio_attach(parent, self, aux)
struct device *parent;
struct device *self;
void *aux;
{
struct mainbus_attach_args *mb = aux;
struct lmcaudio_softc *sc = (void *)self;
sc->iobase = mb->mb_iobase;
sc->open = 0;
ag.in_progress = 0;
ag.next_cur = 0;
ag.next_end = 0;
ag.next_intr = NULL;
ag.next_arg = NULL;
/*
* Enable serial sound. The digital serial sound interface
* consists of 16 bits sample on each channel.
*/
outl(vidc_base, VIDC_SCR | 0x03);
/*
* Video LCD and Serial Sound Mux control. - Japanese format.
*/
IOMD_WRITE_BYTE(IOMD_VIDMUX, 0x02);
volume_ctl(VINPUTSEL, VIN1);
volume_ctl(VLOUD, 0);
volume_ctl(VBASS, VDBM0);
volume_ctl(VTREB, VDBM0);
volume_ctl(VLEFT, 18);
volume_ctl(VRIGHT, 18);
volume_ctl(VMODE, VSTEREO);
volume_ctl(VDIN, 0);
/* Program the silence buffer and reset the DMA channel */
ag.silence = uvm_km_alloc(kernel_map, NBPG);
ag.beep = uvm_km_zalloc(kernel_map, NBPG);
if (ag.silence == NULL || ag.beep == NULL)
panic("lmcaudio: Cannot allocate memory\n");
memset((char *)ag.silence, 0, NBPG);
memcpy((char *)ag.beep, (char *)beep_waveform, sizeof(beep_waveform));
conv_jap((u_char *)ag.beep, sizeof(beep_waveform));
ag.buffer = 0;
/* Install the irq handler for the DMA interrupt */
ag.ih.ih_func = lmcaudio_intr;
ag.ih.ih_arg = NULL;
ag.ih.ih_level = IPL_AUDIO;
ag.intr = NULL;
disable_irq(sdma_channel);
if (irq_claim(sdma_channel, &(ag.ih)))
panic("lmcaudio: couldn't claim VIDC AUDIO DMA channel");
disable_irq(sdma_channel);
lmcaudio_rate(20000);
lmcaudio_beep_generate();
audio_attach_mi(&lmcaudio_hw_if, sc, &sc->device);
}
int nauzero = 0;
int ndmacall = 0;
int
lmcaudio_open(addr, flags)
void *addr;
int flags;
{
struct lmcaudio_softc *sc = addr;
#ifdef DEBUG
printf("DEBUG: lmcaudio_open called\n");
#endif
if (sc->open)
return EBUSY;
sc->open = 1;
ag.open = 1;
ag.drain = 0;
nauzero = 0;
ndmacall = 0;
return 0;
}
void
lmcaudio_close(addr)
void *addr;
{
struct lmcaudio_softc *sc = addr;
#ifdef DEBUG
printf("DEBUG: lmcaudio_close called\n");
#endif
lmcaudio_shutdown();
sc->open = 0;
ag.open = 0;
ag.drain = 0;
#if 0
printf("ndmacall=%d, auzero=%d\n", ndmacall, nauzero);
#endif
nauzero = 0;
ndmacall = 0;
}
void
lmcaudio_timeout(arg)
void *arg;
{
wakeup(arg);
}
/*
* Drain the buffer before closing the device.
*/
int
lmcaudio_drain(addr)
void *addr;
{
ag.drain = 1;
callout_reset(&ag_drain_ch, 30 * hz, lmcaudio_timeout, &ag.drain);
(void) tsleep(lmcaudio_timeout, PWAIT | PCATCH, "lmcdrain", 0);
ag.drain = 0;
return(0);
}
/* ************************************************************************* *
| Interface to the generic audio driver |
* ************************************************************************* */
int
lmcaudio_set_params(addr, setmode, usemode, p, r)
void *addr;
int setmode, usemode;
struct audio_params *p, *r;
{
if (p->encoding != AUDIO_ENCODING_SLINEAR_LE ||
p->precision != 16 ||
p->channels != 2)
return EINVAL;
return lmcaudio_rate(p->sample_rate);
}
int
lmcaudio_query_encoding(addr, fp)
void *addr;
struct audio_encoding *fp;
{
switch (fp->index) {
case 0:
strcpy (fp->name, AudioEslinear_le);
fp->encoding = AUDIO_ENCODING_SLINEAR_LE;
fp->precision = 16;
fp->flags = 0;
break;
default:
return (EINVAL);
}
return 0;
}
int
lmcaudio_round_blocksize(addr, blk)
void *addr;
int blk;
{
if (blk > NBPG)
blk = NBPG;
else if (blk & 0x0f) /* quad word */
blk &= ~0x0f;
return (blk);
}
#define ROUND(s) ( ((int)s) & (~(NBPG-1)) )
int
lmcaudio_start_output(addr, p, cc, intr, arg)
void *addr;
void *p;
int cc;
void (*intr)();
void *arg;
{
#ifdef DEBUG
printf ( "lmcaudio_start_output (%d) %08x %08x\n", cc, intr, arg );
#endif
if (((u_int) p & 0x0000000f) || (ROUND(p) != ROUND(p+cc-1))) {
/*
* Not on quad word boundary.
*/
memcpy((char *)ag.silence, p, (cc > NBPG ? NBPG : cc));
p = (void *)ag.silence;
if (cc > NBPG) {
cc = NBPG;
}
}
lmcaudio_dma_program((vm_offset_t)p, (vm_offset_t)(p+cc), intr, arg);
return(0);
}
int
lmcaudio_start_input(addr, p, cc, intr, arg)
void *addr;
void *p;
int cc;
void (*intr)();
void *arg;
{
return EIO;
}
int
lmcaudio_halt_output(addr)
void *addr;
{
#ifdef DEBUG
printf ( "DEBUG: lmcaudio_halt_output\n" );
#endif
return EIO;
}
int
lmcaudio_halt_input(addr)
void *addr;
{
#ifdef DEBUG
printf ( "DEBUG: lmcaudio_halt_input\n" );
#endif
return EIO;
}
int
lmcaudio_speaker_ctl(addr, newstate)
void *addr;
int newstate;
{
#ifdef DEBUG
printf("DEBUG: lmcaudio_speaker_ctl\n");
#endif
switch (newstate) {
case SPKR_ON:
volume_ctl(VINPUTSEL, VIN1);
break;
case SPKR_OFF:
volume_ctl(VINPUTSEL, VMUTE);
break;
}
return(0);
}
int
lmcaudio_getdev(addr, retp)
void *addr;
struct audio_device *retp;
{
*retp = lmcaudio_device;
return(0);
}
int
lmcaudio_set_port(addr, cp)
void *addr;
mixer_ctrl_t *cp;
{
return(EINVAL);
}
int
lmcaudio_get_port(addr, cp)
void *addr;
mixer_ctrl_t *cp;
{
return(EINVAL);
}
int
lmcaudio_get_props(addr)
void *addr;
mixer_devinfo_t *dip;
{
return(0);
}
int
lmcaudio_query_devinfo(addr, dip)
void *addr;
mixer_devinfo_t *dip;
{
return(ENXIO);
}
void
lmcaudio_dummy_routine(arg)
void *arg;
{
}
int
lmcaudio_rate(rate)
int rate;
{
curr_rate = (int)(250000/rate + 0.5) - 2;
outl(vidc_base, VIDC_SFR | curr_rate);
return(0);
}
#define PHYS(x, y) pmap_extract(pmap_kernel(), ((x)&PG_FRAME), (paddr_t *)(y))
/*
* Program the next buffer to be used
* This function must be re-entrant, maximum re-entrancy of 2
*/
int
lmcaudio_dma_program(cur, end, intr, arg)
vm_offset_t cur;
vm_offset_t end;
void (*intr)();
void *arg;
{
int size = end - cur;
u_int stopflag = 0;
paddr_t pa;
if (ag.drain) {
ag.drain++;
stopflag = 0x80000000;
}
/* If there isn't a transfer in progress then start a new one */
if (ag.in_progress == 0) {
ag.buffer = 0;
IOMD_WRITE_WORD(IOMD_SD0CR, 0x90); /* Reset State Machine */
IOMD_WRITE_WORD(IOMD_SD0CR, 0x30); /* Reset State Machine */
PHYS(cur, &pa);
IOMD_WRITE_WORD(IOMD_SD0CURA, pa);
IOMD_WRITE_WORD(IOMD_SD0ENDA, (pa + size - 16)|stopflag);
IOMD_WRITE_WORD(IOMD_SD0CURB, pa);
IOMD_WRITE_WORD(IOMD_SD0ENDB, (pa + size - 16)|stopflag);
ag.in_progress = 1;
ag.next_cur = ag.next_end = 0;
ag.next_intr = ag.next_arg = 0;
ag.intr = intr;
ag.arg = arg;
/* The driver 'clicks' between buffer swaps, leading me to think */
/* that the fifo is much small than on other sound cards. So */
/* so I'm going to have to do some tricks here */
(*ag.intr)(ag.arg); /* Schedule the next buffer */
ag.intr = lmcaudio_dummy_routine; /* Already done this */
ag.arg = NULL;
enable_irq(sdma_channel);
} else {
/* Otherwise schedule the next one */
if (ag.next_cur != 0) {
/* If there's one scheduled then complain */
printf ( "lmcaudio: Buffer already Q'ed\n" );
return EIO;
} else {
/* We're OK to schedule it now */
ag.buffer = (++ag.buffer) & 1;
PHYS(cur, &ag.next_cur);
ag.next_end = (ag.next_cur + size - 16) | stopflag;
ag.next_intr = intr;
ag.next_arg = arg;
}
}
return(0);
}
void
lmcaudio_shutdown()
{
paddr_t pa;
/* Shut down the channel */
ag.intr = NULL;
ag.in_progress = 0;
#ifdef PRINT
printf ( "lmcaudio: stop output\n" );
#endif
memset((char *)ag.silence, 0, NBPG);
PHYS(ag.silence, &pa);
IOMD_WRITE_WORD(IOMD_SD0CURA, pa);
IOMD_WRITE_WORD(IOMD_SD0ENDA, (pa + NBPG - 16) | 0x80000000);
disable_irq(sdma_channel);
IOMD_WRITE_WORD(IOMD_SD0CR, 0x90); /* Reset State Machine */
}
#define OVERRUN (0x04)
#define INTERRUPT (0x02)
#define BANK_A (0x00)
#define BANK_B (0x01)
int
lmcaudio_intr(arg)
void *arg;
{
int status = IOMD_READ_BYTE(IOMD_SD0ST);
void (*nintr)();
void *narg;
void (*xintr)();
void *xarg;
int xcur, xend;
u_char direction;
if (ag.open == 0) {
lmcaudio_shutdown ();
return(0);
}
nintr = ag.intr;
narg = ag.arg;
ag.intr = NULL;
xintr = ag.next_intr;
xarg = ag.next_arg;
xcur = ag.next_cur;
xend = ag.next_end;
ag.next_cur = 0;
ag.intr = xintr;
ag.arg = xarg;
if (nintr) {
(*nintr)(narg);
}
if (xcur == 0) {
callout_stop(&ag_drain_ch);
wakeup(lmcaudio_timeout);
return(0);
#if 0
lmcaudio_shutdown ();
#endif
} else {
/*
* OIA means channel A should be programmed.
* OIB means channel B should be programmed.
* IA means channel A is busy, program B.
* IB means channel B is busy, program A.
*/
if (status & OVERRUN) {
direction = (status & BANK_B);
} else {
direction = (status ^ BANK_B) & BANK_B;
}
if (direction) {
IOMD_WRITE_WORD(IOMD_SD0CURB, xcur);
IOMD_WRITE_WORD(IOMD_SD0ENDB, xend);
} else {
IOMD_WRITE_WORD(IOMD_SD0CURA, xcur);
IOMD_WRITE_WORD(IOMD_SD0ENDA, xend);
}
status = inb(IOMD_SD0ST);
if (status & OVERRUN) {
if (status & BANK_B) {
IOMD_WRITE_WORD(IOMD_SD0CURB, xcur);
IOMD_WRITE_WORD(IOMD_SD0ENDB, xend);
} else {
IOMD_WRITE_WORD(IOMD_SD0CURA, xcur);
IOMD_WRITE_WORD(IOMD_SD0ENDA, xend);
}
}
}
if (!ag.drain && ag.next_cur == 0) {
(*ag.intr)(ag.arg); /* Schedule the next buffer */
ag.intr = lmcaudio_dummy_routine; /* Already done this */
ag.arg = NULL;
}
if (ag.drain == 1) {
lmcaudio_dma_program(ag.silence, ag.silence+NBPG,
lmcaudio_dummy_routine, NULL);
}
return 0;
}
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