/*      $NetBSD: cs4231.c,v 1.32 2019/11/10 21:16:35 chs Exp $  */

/*-
* Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Paul Kranenburg.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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, 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.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: cs4231.c,v 1.32 2019/11/10 21:16:35 chs Exp $");

#include "audio.h"
#if NAUDIO > 0

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <sys/bus.h>
#include <sys/kmem.h>
#include <sys/malloc.h>

#include <machine/autoconf.h>
#include <sys/cpu.h>

#include <sys/audioio.h>
#include <dev/audio/audio_if.h>

#include <dev/ic/ad1848reg.h>
#include <dev/ic/cs4231reg.h>
#include <dev/ic/ad1848var.h>
#include <dev/ic/cs4231var.h>

/*---*/
#define CSAUDIO_DAC_LVL         0
#define CSAUDIO_LINE_IN_LVL     1
#define CSAUDIO_MONO_LVL        2
#define CSAUDIO_CD_LVL          3
#define CSAUDIO_OUTPUT_LVL      4
#define CSAUDIO_OUT_LVL         5
#define CSAUDIO_LINE_IN_MUTE    6
#define CSAUDIO_DAC_MUTE        7
#define CSAUDIO_CD_MUTE         8
#define CSAUDIO_MONO_MUTE       9
#define CSAUDIO_OUTPUT_MUTE     10
#define CSAUDIO_OUT_MUTE        11
#define CSAUDIO_REC_LVL         12
#define CSAUDIO_RECORD_SOURCE   13

#define CSAUDIO_INPUT_CLASS     14
#define CSAUDIO_MONITOR_CLASS   15
#define CSAUDIO_RECORD_CLASS    16

#ifdef AUDIO_DEBUG
int     cs4231_debug = 0;
#define DPRINTF(x)      if (cs4231_debug) printf x
#else
#define DPRINTF(x)
#endif

struct audio_device cs4231_device = {
       "cs4231",
       "x",
       "audio"
};


/* ad1848 sc_{read,write}reg */
static int      cs4231_read(struct ad1848_softc *, int);
static void     cs4231_write(struct ad1848_softc *, int, int);

int
cs4231_read(struct ad1848_softc *sc, int index)
{

       return bus_space_read_1(sc->sc_iot, sc->sc_ioh, (index << 2));
}

void
cs4231_write(struct ad1848_softc *sc, int index, int value)
{

       bus_space_write_1(sc->sc_iot, sc->sc_ioh, (index << 2), value);
}


void
cs4231_common_attach(struct cs4231_softc *sc, device_t self,
   bus_space_handle_t ioh)
{
       char *buf;
       int reg;

       sc->sc_ad1848.parent = sc;
       sc->sc_ad1848.sc_dev = self;
       sc->sc_ad1848.sc_iot = sc->sc_bustag;
       sc->sc_ad1848.sc_ioh = ioh;
       sc->sc_ad1848.sc_readreg = cs4231_read;
       sc->sc_ad1848.sc_writereg = cs4231_write;

       sc->sc_playback.t_name = "playback";
       sc->sc_capture.t_name = "capture";

       evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR,
                            NULL,
                            device_xname(sc->sc_ad1848.sc_dev), "total");

       evcnt_attach_dynamic(&sc->sc_playback.t_intrcnt, EVCNT_TYPE_INTR,
                            &sc->sc_intrcnt,
                            device_xname(sc->sc_ad1848.sc_dev), "playback");

       evcnt_attach_dynamic(&sc->sc_playback.t_ierrcnt, EVCNT_TYPE_INTR,
                            &sc->sc_intrcnt,
                            device_xname(sc->sc_ad1848.sc_dev), "perrors");

       evcnt_attach_dynamic(&sc->sc_capture.t_intrcnt, EVCNT_TYPE_INTR,
                            &sc->sc_intrcnt,
                            device_xname(sc->sc_ad1848.sc_dev), "capture");

       evcnt_attach_dynamic(&sc->sc_capture.t_ierrcnt, EVCNT_TYPE_INTR,
                            &sc->sc_intrcnt,
                            device_xname(sc->sc_ad1848.sc_dev), "cerrors");

       /* put chip in native mode to access (extended) ID register */
       reg = ad_read(&sc->sc_ad1848, SP_MISC_INFO);
       ad_write(&sc->sc_ad1848, SP_MISC_INFO, reg | MODE2);

       /* read version numbers from I25 */
       reg = ad_read(&sc->sc_ad1848, CS_VERSION_ID);
       switch (reg & (CS_VERSION_NUMBER | CS_VERSION_CHIPID)) {
       case 0xa0:
               sc->sc_ad1848.chip_name = "CS4231A";
               break;
       case 0x80:
               sc->sc_ad1848.chip_name = "CS4231";
               break;
       case 0x82:
               sc->sc_ad1848.chip_name = "CS4232";
               break;
       case 0xa2:
               sc->sc_ad1848.chip_name = "CS4232C";
               break;
       default:
               buf = malloc(32, M_TEMP, M_WAITOK);
               snprintf(buf, 32, "unknown rev: %x/%x",
                   reg&0xe0, reg&7);
               sc->sc_ad1848.chip_name = buf;
       }

       sc->sc_ad1848.mode = 2; /* put ad1848 driver in `MODE 2' mode */
       ad1848_attach(&sc->sc_ad1848);
}

void *
cs4231_malloc(void *addr, int direction, size_t size)
{
       struct cs4231_softc *sc;
       bus_dma_tag_t dmatag;
       struct cs_dma *p;

       sc = addr;
       dmatag = sc->sc_dmatag;
       p = kmem_alloc(sizeof(*p), KM_SLEEP);

       /* Allocate a DMA map */
       if (bus_dmamap_create(dmatag, size, 1, size, 0,
           BUS_DMA_NOWAIT, &p->dmamap) != 0)
               goto fail1;

       /* Allocate DMA memory */
       p->size = size;
       if (bus_dmamem_alloc(dmatag, size, 64*1024, 0,
           p->segs, sizeof(p->segs)/sizeof(p->segs[0]),
           &p->nsegs, BUS_DMA_NOWAIT) != 0)
               goto fail2;

       /* Map DMA memory into kernel space */
       if (bus_dmamem_map(dmatag, p->segs, p->nsegs, p->size,
           &p->addr, BUS_DMA_NOWAIT|BUS_DMA_COHERENT) != 0)
               goto fail3;

       /* Load the buffer */
       if (bus_dmamap_load(dmatag, p->dmamap,
           p->addr, size, NULL, BUS_DMA_NOWAIT) != 0)
               goto fail4;

       p->next = sc->sc_dmas;
       sc->sc_dmas = p;
       return p->addr;

fail4:
       bus_dmamem_unmap(dmatag, p->addr, p->size);
fail3:
       bus_dmamem_free(dmatag, p->segs, p->nsegs);
fail2:
       bus_dmamap_destroy(dmatag, p->dmamap);
fail1:
       kmem_free(p, sizeof(*p));
       return NULL;
}

void
cs4231_free(void *addr, void *ptr, size_t size)
{
       struct cs4231_softc *sc;
       bus_dma_tag_t dmatag;
       struct cs_dma *p, **pp;

       sc = addr;
       dmatag = sc->sc_dmatag;
       for (pp = &sc->sc_dmas; (p = *pp) != NULL; pp = &(*pp)->next) {
               if (p->addr != ptr)
                       continue;
               bus_dmamap_unload(dmatag, p->dmamap);
               bus_dmamem_unmap(dmatag, p->addr, p->size);
               bus_dmamem_free(dmatag, p->segs, p->nsegs);
               bus_dmamap_destroy(dmatag, p->dmamap);
               *pp = p->next;
               kmem_free(p, sizeof(*p));
               return;
       }
       printf("cs4231_free: rogue pointer\n");
}


/*
* Set up transfer and return DMA address and byte count in paddr and psize
* for bus dependent trigger_{in,out}put to load into the DMA controller.
*/
int
cs4231_transfer_init(
       struct cs4231_softc *sc,
       struct cs_transfer *t,
       bus_addr_t *paddr,
       bus_size_t *psize,
       void *start, void *end,
       int blksize,
       void (*intr)(void *),
       void *arg)
{
       struct cs_dma *p;
       vsize_t n;

       if (t->t_active) {
               printf("%s: %s already running\n",
                      device_xname(sc->sc_ad1848.sc_dev), t->t_name);
               return EINVAL;
       }

       t->t_intr = intr;
       t->t_arg = arg;

       for (p = sc->sc_dmas; p != NULL && p->addr != start; p = p->next)
               continue;
       if (p == NULL) {
               printf("%s: bad %s addr %p\n",
                      device_xname(sc->sc_ad1848.sc_dev), t->t_name, start);
               return EINVAL;
       }

       n = (char *)end - (char *)start;

       t->t_dma = p;           /* the DMA memory segment */
       t->t_segsz = n;         /* size of DMA segment */
       t->t_blksz = blksize;   /* do transfers in blksize chunks */

       if (n > t->t_blksz)
               n = t->t_blksz;

       t->t_cnt = n;

       /* for caller to load into DMA controller */
       *paddr = t->t_dma->dmamap->dm_segs[0].ds_addr;
       *psize = n;

       DPRINTF(("%s: init %s: [%p..%p] %lu bytes %lu blocks;"
                " DMA at 0x%lx count %lu\n",
                device_xname(sc->sc_ad1848.sc_dev), t->t_name,
                start, end, (u_long)t->t_segsz, (u_long)t->t_blksz,
                (u_long)*paddr, (u_long)*psize));

       t->t_active = 1;
       return 0;
}

/*
* Compute next DMA address/counter, update transfer status.
*/
void
cs4231_transfer_advance(struct cs_transfer *t, bus_addr_t *paddr,
   bus_size_t *psize)
{
       bus_addr_t dmabase, nextaddr;
       bus_size_t togo;

       dmabase = t->t_dma->dmamap->dm_segs[0].ds_addr;

       togo = t->t_segsz - t->t_cnt;
       if (togo == 0) {        /* roll over */
               nextaddr = dmabase;
               t->t_cnt = togo = t->t_blksz;
       } else {
               nextaddr = dmabase + t->t_cnt;
               if (togo > t->t_blksz)
                       togo = t->t_blksz;
               t->t_cnt += togo;
       }

       /* for caller to load into DMA controller */
       *paddr = nextaddr;
       *psize = togo;
}


int
cs4231_open(void *addr, int flags)
{
       struct cs4231_softc *sc;

       sc = addr;
       DPRINTF(("sa_open: unit %p\n", sc));

       sc->sc_playback.t_active = 0;
       sc->sc_playback.t_intr = NULL;
       sc->sc_playback.t_arg = NULL;

       sc->sc_capture.t_active = 0;
       sc->sc_capture.t_intr = NULL;
       sc->sc_capture.t_arg = NULL;

       /* no interrupts from ad1848 */
       ad_write(&sc->sc_ad1848, SP_PIN_CONTROL, 0);
       ad1848_reset(&sc->sc_ad1848);

       DPRINTF(("sa_open: ok -> sc=%p\n", sc));
       return 0;
}

void
cs4231_close(void *addr)
{

       DPRINTF(("sa_close: sc=%p\n", addr));

       /* audio(9) already called halt methods */

       DPRINTF(("sa_close: closed.\n"));
}

int
cs4231_getdev(void *addr, struct audio_device *retp)
{

       *retp = cs4231_device;
       return 0;
}

static const ad1848_devmap_t csmapping[] = {
       { CSAUDIO_DAC_LVL, AD1848_KIND_LVL, AD1848_AUX1_CHANNEL },
       { CSAUDIO_LINE_IN_LVL, AD1848_KIND_LVL, AD1848_LINE_CHANNEL },
       { CSAUDIO_MONO_LVL, AD1848_KIND_LVL, AD1848_MONO_CHANNEL },
       { CSAUDIO_CD_LVL, AD1848_KIND_LVL, AD1848_AUX2_CHANNEL },
       { CSAUDIO_OUTPUT_LVL, AD1848_KIND_LVL, AD1848_MONITOR_CHANNEL },
       { CSAUDIO_OUT_LVL, AD1848_KIND_LVL, AD1848_DAC_CHANNEL },
       { CSAUDIO_DAC_MUTE, AD1848_KIND_MUTE, AD1848_AUX1_CHANNEL },
       { CSAUDIO_LINE_IN_MUTE, AD1848_KIND_MUTE, AD1848_LINE_CHANNEL },
       { CSAUDIO_MONO_MUTE, AD1848_KIND_MUTE, AD1848_MONO_CHANNEL },
       { CSAUDIO_CD_MUTE, AD1848_KIND_MUTE, AD1848_AUX2_CHANNEL },
       { CSAUDIO_OUTPUT_MUTE, AD1848_KIND_MUTE, AD1848_MONITOR_CHANNEL },
       { CSAUDIO_OUT_MUTE, AD1848_KIND_MUTE, AD1848_OUT_CHANNEL },
       { CSAUDIO_REC_LVL, AD1848_KIND_RECORDGAIN, -1 },
       { CSAUDIO_RECORD_SOURCE, AD1848_KIND_RECORDSOURCE, -1 }
};

static int nummap = sizeof(csmapping) / sizeof(csmapping[0]);


int
cs4231_set_port(void *addr, mixer_ctrl_t *cp)
{
       struct ad1848_softc *ac;

       DPRINTF(("cs4231_set_port: port=%d", cp->dev));
       ac = addr;
       return ad1848_mixer_set_port(ac, csmapping, nummap, cp);
}

int
cs4231_get_port(void *addr, mixer_ctrl_t *cp)
{
       struct ad1848_softc *ac;

       DPRINTF(("cs4231_get_port: port=%d", cp->dev));
       ac = addr;
       return ad1848_mixer_get_port(ac, csmapping, nummap, cp);
}

int
cs4231_get_props(void *addr)
{

       return AUDIO_PROP_PLAYBACK | AUDIO_PROP_CAPTURE |
           AUDIO_PROP_FULLDUPLEX;
}

int
cs4231_query_devinfo(void *addr, mixer_devinfo_t *dip)
{

       switch(dip->index) {

       case CSAUDIO_DAC_LVL:           /*  dacout */
               dip->type = AUDIO_MIXER_VALUE;
               dip->mixer_class = CSAUDIO_INPUT_CLASS;
               dip->prev = AUDIO_MIXER_LAST;
               dip->next = CSAUDIO_DAC_MUTE;
               strcpy(dip->label.name, AudioNdac);
               dip->un.v.num_channels = 2;
               strcpy(dip->un.v.units.name, AudioNvolume);
               break;

       case CSAUDIO_LINE_IN_LVL:       /* line */
               dip->type = AUDIO_MIXER_VALUE;
               dip->mixer_class = CSAUDIO_INPUT_CLASS;
               dip->prev = AUDIO_MIXER_LAST;
               dip->next = CSAUDIO_LINE_IN_MUTE;
               strcpy(dip->label.name, AudioNline);
               dip->un.v.num_channels = 2;
               strcpy(dip->un.v.units.name, AudioNvolume);
               break;

       case CSAUDIO_MONO_LVL:  /* mono/microphone mixer */
               dip->type = AUDIO_MIXER_VALUE;
               dip->mixer_class = CSAUDIO_INPUT_CLASS;
               dip->prev = AUDIO_MIXER_LAST;
               dip->next = CSAUDIO_MONO_MUTE;
               strcpy(dip->label.name, AudioNmicrophone);
               dip->un.v.num_channels = 1;
               strcpy(dip->un.v.units.name, AudioNvolume);
               break;

       case CSAUDIO_CD_LVL:            /* cd */
               dip->type = AUDIO_MIXER_VALUE;
               dip->mixer_class = CSAUDIO_INPUT_CLASS;
               dip->prev = AUDIO_MIXER_LAST;
               dip->next = CSAUDIO_CD_MUTE;
               strcpy(dip->label.name, AudioNcd);
               dip->un.v.num_channels = 2;
               strcpy(dip->un.v.units.name, AudioNvolume);
               break;


       case CSAUDIO_OUTPUT_LVL:        /* monitor level */
               dip->type = AUDIO_MIXER_VALUE;
               dip->mixer_class = CSAUDIO_MONITOR_CLASS;
               dip->next = CSAUDIO_OUTPUT_MUTE;
               dip->prev = AUDIO_MIXER_LAST;
               strcpy(dip->label.name, AudioNmonitor);
               dip->un.v.num_channels = 1;
               strcpy(dip->un.v.units.name, AudioNvolume);
               break;

       case CSAUDIO_OUT_LVL:           /* cs4231 output volume */
               dip->type = AUDIO_MIXER_VALUE;
               dip->mixer_class = CSAUDIO_MONITOR_CLASS;
               dip->next = dip->prev = AUDIO_MIXER_LAST;
               strcpy(dip->label.name, AudioNmaster);
               dip->un.v.num_channels = 2;
               dip->un.v.delta = 16;
               strcpy(dip->un.v.units.name, AudioNvolume);
               break;

       case CSAUDIO_OUT_MUTE: /* mute built-in speaker */
               dip->mixer_class = CSAUDIO_MONITOR_CLASS;
               dip->type = AUDIO_MIXER_ENUM;
               dip->prev = CSAUDIO_MONITOR_CLASS;
               dip->next = AUDIO_MIXER_LAST;
               strcpy(dip->label.name, AudioNmono);
               /* names reversed, this is a "mute" value used as "mono enabled" */
               dip->un.e.num_mem = 2;
               strcpy(dip->un.e.member[0].label.name, AudioNon);
               dip->un.e.member[0].ord = 0;
               strcpy(dip->un.e.member[1].label.name, AudioNoff);
               dip->un.e.member[1].ord = 1;
               break;

       case CSAUDIO_LINE_IN_MUTE:
               dip->mixer_class = CSAUDIO_INPUT_CLASS;
               dip->type = AUDIO_MIXER_ENUM;
               dip->prev = CSAUDIO_LINE_IN_LVL;
               dip->next = AUDIO_MIXER_LAST;
               goto mute;

       case CSAUDIO_DAC_MUTE:
               dip->mixer_class = CSAUDIO_INPUT_CLASS;
               dip->type = AUDIO_MIXER_ENUM;
               dip->prev = CSAUDIO_DAC_LVL;
               dip->next = AUDIO_MIXER_LAST;
               goto mute;

       case CSAUDIO_CD_MUTE:
               dip->mixer_class = CSAUDIO_INPUT_CLASS;
               dip->type = AUDIO_MIXER_ENUM;
               dip->prev = CSAUDIO_CD_LVL;
               dip->next = AUDIO_MIXER_LAST;
               goto mute;

       case CSAUDIO_MONO_MUTE:
               dip->mixer_class = CSAUDIO_INPUT_CLASS;
               dip->type = AUDIO_MIXER_ENUM;
               dip->prev = CSAUDIO_MONO_LVL;
               dip->next = AUDIO_MIXER_LAST;
               goto mute;

       case CSAUDIO_OUTPUT_MUTE:
               dip->mixer_class = CSAUDIO_MONITOR_CLASS;
               dip->type = AUDIO_MIXER_ENUM;
               dip->prev = CSAUDIO_OUTPUT_LVL;
               dip->next = AUDIO_MIXER_LAST;
       mute:
               strcpy(dip->label.name, AudioNmute);
               dip->un.e.num_mem = 2;
               strcpy(dip->un.e.member[0].label.name, AudioNoff);
               dip->un.e.member[0].ord = 0;
               strcpy(dip->un.e.member[1].label.name, AudioNon);
               dip->un.e.member[1].ord = 1;
               break;

       case CSAUDIO_REC_LVL:   /* record level */
               dip->type = AUDIO_MIXER_VALUE;
               dip->mixer_class = CSAUDIO_RECORD_CLASS;
               dip->prev = AUDIO_MIXER_LAST;
               dip->next = CSAUDIO_RECORD_SOURCE;
               strcpy(dip->label.name, AudioNrecord);
               dip->un.v.num_channels = 2;
               strcpy(dip->un.v.units.name, AudioNvolume);
               break;

       case CSAUDIO_RECORD_SOURCE:
               dip->mixer_class = CSAUDIO_RECORD_CLASS;
               dip->type = AUDIO_MIXER_ENUM;
               dip->prev = CSAUDIO_REC_LVL;
               dip->next = AUDIO_MIXER_LAST;
               strcpy(dip->label.name, AudioNsource);
               dip->un.e.num_mem = 4;
               strcpy(dip->un.e.member[0].label.name, AudioNoutput);
               dip->un.e.member[0].ord = DAC_IN_PORT;
               strcpy(dip->un.e.member[1].label.name, AudioNmicrophone);
               dip->un.e.member[1].ord = MIC_IN_PORT;
               strcpy(dip->un.e.member[2].label.name, AudioNdac);
               dip->un.e.member[2].ord = AUX1_IN_PORT;
               strcpy(dip->un.e.member[3].label.name, AudioNline);
               dip->un.e.member[3].ord = LINE_IN_PORT;
               break;

       case CSAUDIO_INPUT_CLASS:               /* input class descriptor */
               dip->type = AUDIO_MIXER_CLASS;
               dip->mixer_class = CSAUDIO_INPUT_CLASS;
               dip->next = dip->prev = AUDIO_MIXER_LAST;
               strcpy(dip->label.name, AudioCinputs);
               break;

       case CSAUDIO_MONITOR_CLASS:             /* output class descriptor */
               dip->type = AUDIO_MIXER_CLASS;
               dip->mixer_class = CSAUDIO_MONITOR_CLASS;
               dip->next = dip->prev = AUDIO_MIXER_LAST;
               strcpy(dip->label.name, AudioCoutputs);
               break;

       case CSAUDIO_RECORD_CLASS:              /* record source class */
               dip->type = AUDIO_MIXER_CLASS;
               dip->mixer_class = CSAUDIO_RECORD_CLASS;
               dip->next = dip->prev = AUDIO_MIXER_LAST;
               strcpy(dip->label.name, AudioCrecord);
               break;

       default:
               return ENXIO;
               /*NOTREACHED*/
       }
       DPRINTF(("AUDIO_MIXER_DEVINFO: name=%s\n", dip->label.name));

       return 0;
}

#endif /* NAUDIO > 0 */

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