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burgundy.c

/*
 * PMac Burgundy lowlevel functions
 *
 * Copyright (c) by Takashi Iwai <tiwai@suse.de>
 * code based on dmasound.c.
 *
 *   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#include <sound/driver.h>
#include <asm/io.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <sound/core.h>
#include "pmac.h"
#include "burgundy.h"


/* Waits for busy flag to clear */
static inline void
snd_pmac_burgundy_busy_wait(pmac_t *chip)
{
      int timeout = 50;
      while ((in_le32(&chip->awacs->codec_ctrl) & MASK_NEWECMD) && timeout--)
            udelay(1);
      if (! timeout)
            printk(KERN_DEBUG "burgundy_busy_wait: timeout\n");
}

static inline void
snd_pmac_burgundy_extend_wait(pmac_t *chip)
{
      int timeout;
      timeout = 50;
      while (!(in_le32(&chip->awacs->codec_stat) & MASK_EXTEND) && timeout--)
            udelay(1);
      if (! timeout)
            printk(KERN_DEBUG "burgundy_extend_wait: timeout #1\n");
      timeout = 50;
      while ((in_le32(&chip->awacs->codec_stat) & MASK_EXTEND) && timeout--)
            udelay(1);
      if (! timeout)
            printk(KERN_DEBUG "burgundy_extend_wait: timeout #2\n");
}

static void
snd_pmac_burgundy_wcw(pmac_t *chip, unsigned addr, unsigned val)
{
      out_le32(&chip->awacs->codec_ctrl, addr + 0x200c00 + (val & 0xff));
      snd_pmac_burgundy_busy_wait(chip);
      out_le32(&chip->awacs->codec_ctrl, addr + 0x200d00 +((val>>8) & 0xff));
      snd_pmac_burgundy_busy_wait(chip);
      out_le32(&chip->awacs->codec_ctrl, addr + 0x200e00 +((val>>16) & 0xff));
      snd_pmac_burgundy_busy_wait(chip);
      out_le32(&chip->awacs->codec_ctrl, addr + 0x200f00 +((val>>24) & 0xff));
      snd_pmac_burgundy_busy_wait(chip);
}

static unsigned
snd_pmac_burgundy_rcw(pmac_t *chip, unsigned addr)
{
      unsigned val = 0;
      unsigned long flags;

      spin_lock_irqsave(&chip->reg_lock, flags);

      out_le32(&chip->awacs->codec_ctrl, addr + 0x100000);
      snd_pmac_burgundy_busy_wait(chip);
      snd_pmac_burgundy_extend_wait(chip);
      val += (in_le32(&chip->awacs->codec_stat) >> 4) & 0xff;

      out_le32(&chip->awacs->codec_ctrl, addr + 0x100100);
      snd_pmac_burgundy_busy_wait(chip);
      snd_pmac_burgundy_extend_wait(chip);
      val += ((in_le32(&chip->awacs->codec_stat)>>4) & 0xff) <<8;

      out_le32(&chip->awacs->codec_ctrl, addr + 0x100200);
      snd_pmac_burgundy_busy_wait(chip);
      snd_pmac_burgundy_extend_wait(chip);
      val += ((in_le32(&chip->awacs->codec_stat)>>4) & 0xff) <<16;

      out_le32(&chip->awacs->codec_ctrl, addr + 0x100300);
      snd_pmac_burgundy_busy_wait(chip);
      snd_pmac_burgundy_extend_wait(chip);
      val += ((in_le32(&chip->awacs->codec_stat)>>4) & 0xff) <<24;

      spin_unlock_irqrestore(&chip->reg_lock, flags);

      return val;
}

static void
snd_pmac_burgundy_wcb(pmac_t *chip, unsigned int addr, unsigned int val)
{
      out_le32(&chip->awacs->codec_ctrl, addr + 0x300000 + (val & 0xff));
      snd_pmac_burgundy_busy_wait(chip);
}

static unsigned
snd_pmac_burgundy_rcb(pmac_t *chip, unsigned int addr)
{
      unsigned val = 0;
      unsigned long flags;

      spin_lock_irqsave(&chip->reg_lock, flags);

      out_le32(&chip->awacs->codec_ctrl, addr + 0x100000);
      snd_pmac_burgundy_busy_wait(chip);
      snd_pmac_burgundy_extend_wait(chip);
      val += (in_le32(&chip->awacs->codec_stat) >> 4) & 0xff;

      spin_unlock_irqrestore(&chip->reg_lock, flags);

      return val;
}

/*
 * Burgundy volume: 0 - 100, stereo
 */
static void
snd_pmac_burgundy_write_volume(pmac_t *chip, unsigned int address, long *volume, int shift)
{
      int hardvolume, lvolume, rvolume;

      lvolume = volume[0] ? volume[0] + BURGUNDY_VOLUME_OFFSET : 0;
      rvolume = volume[1] ? volume[1] + BURGUNDY_VOLUME_OFFSET : 0;

      hardvolume = lvolume + (rvolume << shift);
      if (shift == 8)
            hardvolume |= hardvolume << 16;

      snd_pmac_burgundy_wcw(chip, address, hardvolume);
}

static void
snd_pmac_burgundy_read_volume(pmac_t *chip, unsigned int address, long *volume, int shift)
{
      int wvolume;

      wvolume = snd_pmac_burgundy_rcw(chip, address);

      volume[0] = wvolume & 0xff;
      if (volume[0] >= BURGUNDY_VOLUME_OFFSET)
            volume[0] -= BURGUNDY_VOLUME_OFFSET;
      else
            volume[0] = 0;
      volume[1] = (wvolume >> shift) & 0xff;
      if (volume[1] >= BURGUNDY_VOLUME_OFFSET)
            volume[1] -= BURGUNDY_VOLUME_OFFSET;
      else
            volume[1] = 0;
}


/*
 */

#define BASE2ADDR(base) ((base) << 12)
#define ADDR2BASE(addr) ((addr) >> 12)

static int snd_pmac_burgundy_info_volume(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
{
      uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
      uinfo->count = 2;
      uinfo->value.integer.min = 0;
      uinfo->value.integer.max = 100;
      return 0;
}

static int snd_pmac_burgundy_get_volume(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
      pmac_t *chip = snd_kcontrol_chip(kcontrol);
      unsigned int addr = BASE2ADDR(kcontrol->private_value & 0xff);
      int shift = (kcontrol->private_value >> 8) & 0xff;
      snd_pmac_burgundy_read_volume(chip, addr, ucontrol->value.integer.value, shift);
      return 0;
}

static int snd_pmac_burgundy_put_volume(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
      pmac_t *chip = snd_kcontrol_chip(kcontrol);
      unsigned int addr = BASE2ADDR(kcontrol->private_value & 0xff);
      int shift = (kcontrol->private_value >> 8) & 0xff;
      long nvoices[2];

      snd_pmac_burgundy_write_volume(chip, addr, ucontrol->value.integer.value, shift);
      snd_pmac_burgundy_read_volume(chip, addr, nvoices, shift);
      return (nvoices[0] != ucontrol->value.integer.value[0] ||
            nvoices[1] != ucontrol->value.integer.value[1]);
}

#define BURGUNDY_VOLUME(xname, xindex, addr, shift) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex,\
  .info = snd_pmac_burgundy_info_volume,\
  .get = snd_pmac_burgundy_get_volume,\
  .put = snd_pmac_burgundy_put_volume,\
  .private_value = ((ADDR2BASE(addr) & 0xff) | ((shift) << 8)) }

/* lineout/speaker */

static int snd_pmac_burgundy_info_switch_out(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
{
      int stereo = (kcontrol->private_value >> 24) & 1;
      uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
      uinfo->count = stereo + 1;
      uinfo->value.integer.min = 0;
      uinfo->value.integer.max = 1;
      return 0;
}

static int snd_pmac_burgundy_get_switch_out(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
      pmac_t *chip = snd_kcontrol_chip(kcontrol);
      int lmask = kcontrol->private_value & 0xff;
      int rmask = (kcontrol->private_value >> 8) & 0xff;
      int stereo = (kcontrol->private_value >> 24) & 1;
      int val = snd_pmac_burgundy_rcb(chip, MASK_ADDR_BURGUNDY_MORE_OUTPUTENABLES);
      ucontrol->value.integer.value[0] = (val & lmask) ? 1 : 0;
      if (stereo)
            ucontrol->value.integer.value[1] = (val & rmask) ? 1 : 0;
      return 0;
}

static int snd_pmac_burgundy_put_switch_out(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
      pmac_t *chip = snd_kcontrol_chip(kcontrol);
      int lmask = kcontrol->private_value & 0xff;
      int rmask = (kcontrol->private_value >> 8) & 0xff;
      int stereo = (kcontrol->private_value >> 24) & 1;
      int val, oval;
      oval = snd_pmac_burgundy_rcb(chip, MASK_ADDR_BURGUNDY_MORE_OUTPUTENABLES);
      val = oval & ~(lmask | rmask);
      if (ucontrol->value.integer.value[0])
            val |= lmask;
      if (stereo && ucontrol->value.integer.value[1])
            val |= rmask;
      snd_pmac_burgundy_wcb(chip, MASK_ADDR_BURGUNDY_MORE_OUTPUTENABLES, val);
      return val != oval;
}

#define BURGUNDY_OUTPUT_SWITCH(xname, xindex, lmask, rmask, stereo) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex,\
  .info = snd_pmac_burgundy_info_switch_out,\
  .get = snd_pmac_burgundy_get_switch_out,\
  .put = snd_pmac_burgundy_put_switch_out,\
  .private_value = ((lmask) | ((rmask) << 8) | ((stereo) << 24)) }

/* line/speaker output volume */
static int snd_pmac_burgundy_info_volume_out(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
{
      int stereo = (kcontrol->private_value >> 24) & 1;
      uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
      uinfo->count = stereo + 1;
      uinfo->value.integer.min = 0;
      uinfo->value.integer.max = 15;
      return 0;
}

static int snd_pmac_burgundy_get_volume_out(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
      pmac_t *chip = snd_kcontrol_chip(kcontrol);
      unsigned int addr = BASE2ADDR(kcontrol->private_value & 0xff);
      int stereo = (kcontrol->private_value >> 24) & 1;
      int oval;

      oval = ~snd_pmac_burgundy_rcb(chip, addr) & 0xff;
      ucontrol->value.integer.value[0] = oval & 0xf;
      if (stereo)
            ucontrol->value.integer.value[1] = (oval >> 4) & 0xf;
      return 0;
}

static int snd_pmac_burgundy_put_volume_out(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
{
      pmac_t *chip = snd_kcontrol_chip(kcontrol);
      unsigned int addr = BASE2ADDR(kcontrol->private_value & 0xff);
      int stereo = (kcontrol->private_value >> 24) & 1;
      int oval, val;

      oval = ~snd_pmac_burgundy_rcb(chip, addr) & 0xff;
      val = ucontrol->value.integer.value[0];
      if (stereo)
            val |= ucontrol->value.integer.value[1] << 4;
      else
            val |= ucontrol->value.integer.value[0] << 4;
      val = ~val & 0xff;
      snd_pmac_burgundy_wcb(chip, addr, val);
      return val != oval;
}

#define BURGUNDY_OUTPUT_VOLUME(xname, xindex, addr, stereo) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex,\
  .info = snd_pmac_burgundy_info_volume_out,\
  .get = snd_pmac_burgundy_get_volume_out,\
  .put = snd_pmac_burgundy_put_volume_out,\
  .private_value = (ADDR2BASE(addr) | ((stereo) << 24)) }

static snd_kcontrol_new_t snd_pmac_burgundy_mixers[] __initdata = {
      BURGUNDY_VOLUME("Master Playback Volume", 0, MASK_ADDR_BURGUNDY_MASTER_VOLUME, 8),
      BURGUNDY_VOLUME("Line Playback Volume", 0, MASK_ADDR_BURGUNDY_VOLLINE, 16),
      BURGUNDY_VOLUME("CD Playback Volume", 0, MASK_ADDR_BURGUNDY_VOLCD, 16),
      BURGUNDY_VOLUME("Mic Playback Volume", 0, MASK_ADDR_BURGUNDY_VOLMIC, 16),
      BURGUNDY_OUTPUT_VOLUME("PC Speaker Playback Volume", 0, MASK_ADDR_BURGUNDY_ATTENHP, 0),
      /*BURGUNDY_OUTPUT_VOLUME("PCM Playback Volume", 0, MASK_ADDR_BURGUNDY_ATTENLINEOUT, 1),*/
      BURGUNDY_OUTPUT_VOLUME("Headphone Playback Volume", 0, MASK_ADDR_BURGUNDY_ATTENSPEAKER, 1),
};    
static snd_kcontrol_new_t snd_pmac_burgundy_master_sw __initdata = 
BURGUNDY_OUTPUT_SWITCH("Headphone Playback Switch", 0, BURGUNDY_OUTPUT_LEFT, BURGUNDY_OUTPUT_RIGHT, 1);
static snd_kcontrol_new_t snd_pmac_burgundy_speaker_sw __initdata = 
BURGUNDY_OUTPUT_SWITCH("PC Speaker Playback Switch", 0, BURGUNDY_OUTPUT_INTERN, 0, 0);


#ifdef PMAC_SUPPORT_AUTOMUTE
/*
 * auto-mute stuffs
 */
static int snd_pmac_burgundy_detect_headphone(pmac_t *chip)
{
      return (in_le32(&chip->awacs->codec_stat) & chip->hp_stat_mask) ? 1 : 0;
}

static void snd_pmac_burgundy_update_automute(pmac_t *chip, int do_notify)
{
      if (chip->auto_mute) {
            int reg, oreg;
            reg = oreg = snd_pmac_burgundy_rcb(chip, MASK_ADDR_BURGUNDY_MORE_OUTPUTENABLES);
            reg &= ~(BURGUNDY_OUTPUT_LEFT | BURGUNDY_OUTPUT_RIGHT | BURGUNDY_OUTPUT_INTERN);
            if (snd_pmac_burgundy_detect_headphone(chip))
                  reg |= BURGUNDY_OUTPUT_LEFT | BURGUNDY_OUTPUT_RIGHT;
            else
                  reg |= BURGUNDY_OUTPUT_INTERN;
            if (do_notify && reg == oreg)
                  return;
            snd_pmac_burgundy_wcb(chip, MASK_ADDR_BURGUNDY_MORE_OUTPUTENABLES, reg);
            if (do_notify) {
                  snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
                               &chip->master_sw_ctl->id);
                  snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
                               &chip->speaker_sw_ctl->id);
                  snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
                               &chip->hp_detect_ctl->id);
            }
      }
}
#endif /* PMAC_SUPPORT_AUTOMUTE */


/*
 * initialize burgundy
 */
int __init snd_pmac_burgundy_init(pmac_t *chip)
{
      int i, err;

      /* Checks to see the chip is alive and kicking */
      if ((in_le32(&chip->awacs->codec_ctrl) & MASK_ERRCODE) == 0xf0000) {
            printk(KERN_WARNING "pmac burgundy: disabled by MacOS :-(\n");
            return 1;
      }

      snd_pmac_burgundy_wcb(chip, MASK_ADDR_BURGUNDY_OUTPUTENABLES,
                     DEF_BURGUNDY_OUTPUTENABLES);
      snd_pmac_burgundy_wcb(chip, MASK_ADDR_BURGUNDY_MORE_OUTPUTENABLES,
                     DEF_BURGUNDY_MORE_OUTPUTENABLES);
      snd_pmac_burgundy_wcw(chip, MASK_ADDR_BURGUNDY_OUTPUTSELECTS,
                     DEF_BURGUNDY_OUTPUTSELECTS);

      snd_pmac_burgundy_wcb(chip, MASK_ADDR_BURGUNDY_INPSEL21,
                     DEF_BURGUNDY_INPSEL21);
      snd_pmac_burgundy_wcb(chip, MASK_ADDR_BURGUNDY_INPSEL3,
                     DEF_BURGUNDY_INPSEL3);
      snd_pmac_burgundy_wcb(chip, MASK_ADDR_BURGUNDY_GAINCD,
                     DEF_BURGUNDY_GAINCD);
      snd_pmac_burgundy_wcb(chip, MASK_ADDR_BURGUNDY_GAINLINE,
                     DEF_BURGUNDY_GAINLINE);
      snd_pmac_burgundy_wcb(chip, MASK_ADDR_BURGUNDY_GAINMIC,
                     DEF_BURGUNDY_GAINMIC);
      snd_pmac_burgundy_wcb(chip, MASK_ADDR_BURGUNDY_GAINMODEM,
                     DEF_BURGUNDY_GAINMODEM);

      snd_pmac_burgundy_wcb(chip, MASK_ADDR_BURGUNDY_ATTENSPEAKER,
                     DEF_BURGUNDY_ATTENSPEAKER);
      snd_pmac_burgundy_wcb(chip, MASK_ADDR_BURGUNDY_ATTENLINEOUT,
                     DEF_BURGUNDY_ATTENLINEOUT);
      snd_pmac_burgundy_wcb(chip, MASK_ADDR_BURGUNDY_ATTENHP,
                     DEF_BURGUNDY_ATTENHP);

      snd_pmac_burgundy_wcw(chip, MASK_ADDR_BURGUNDY_MASTER_VOLUME,
                     DEF_BURGUNDY_MASTER_VOLUME);
      snd_pmac_burgundy_wcw(chip, MASK_ADDR_BURGUNDY_VOLCD,
                     DEF_BURGUNDY_VOLCD);
      snd_pmac_burgundy_wcw(chip, MASK_ADDR_BURGUNDY_VOLLINE,
                     DEF_BURGUNDY_VOLLINE);
      snd_pmac_burgundy_wcw(chip, MASK_ADDR_BURGUNDY_VOLMIC,
                     DEF_BURGUNDY_VOLMIC);

      if (chip->hp_stat_mask == 0)
            /* set headphone-jack detection bit */
            chip->hp_stat_mask = 0x04;

      /*
       * build burgundy mixers
       */
      strcpy(chip->card->mixername, "PowerMac Burgundy");

      for (i = 0; i < ARRAY_SIZE(snd_pmac_burgundy_mixers); i++) {
            if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_pmac_burgundy_mixers[i], chip))) < 0)
                  return err;
      }
      chip->master_sw_ctl = snd_ctl_new1(&snd_pmac_burgundy_master_sw, chip);
      if ((err = snd_ctl_add(chip->card, chip->master_sw_ctl)) < 0)
            return err;
      chip->speaker_sw_ctl = snd_ctl_new1(&snd_pmac_burgundy_speaker_sw, chip);
      if ((err = snd_ctl_add(chip->card, chip->speaker_sw_ctl)) < 0)
            return err;
#ifdef PMAC_SUPPORT_AUTOMUTE
      if ((err = snd_pmac_add_automute(chip)) < 0)
            return err;

      chip->detect_headphone = snd_pmac_burgundy_detect_headphone;
      chip->update_automute = snd_pmac_burgundy_update_automute;
      snd_pmac_burgundy_update_automute(chip, 0); /* update the status only */
#endif

      return 0;
}

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