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ad1848.h

#ifndef __SOUND_AD1848_H
#define __SOUND_AD1848_H

/*
 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
 *  Definitions for AD1847/AD1848/CS4248 chips
 *
 *
 *   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 "pcm.h"
#include <linux/interrupt.h>

/* IO ports */

#define AD1848P( chip, x ) ( (chip) -> port + c_d_c_AD1848##x )

#define c_d_c_AD1848REGSEL    0
#define c_d_c_AD1848REG       1
#define c_d_c_AD1848STATUS    2
#define c_d_c_AD1848PIO       3

/* codec registers */

#define AD1848_LEFT_INPUT     0x00  /* left input control */
#define AD1848_RIGHT_INPUT    0x01  /* right input control */
#define AD1848_AUX1_LEFT_INPUT      0x02  /* left AUX1 input control */
#define AD1848_AUX1_RIGHT_INPUT     0x03  /* right AUX1 input control */
#define AD1848_AUX2_LEFT_INPUT      0x04  /* left AUX2 input control */
#define AD1848_AUX2_RIGHT_INPUT     0x05  /* right AUX2 input control */
#define AD1848_LEFT_OUTPUT    0x06  /* left output control register */
#define AD1848_RIGHT_OUTPUT   0x07  /* right output control register */
#define AD1848_DATA_FORMAT    0x08  /* clock and data format - playback/capture - bits 7-0 MCE */
#define AD1848_IFACE_CTRL     0x09  /* interface control - bits 7-2 MCE */
#define AD1848_PIN_CTRL       0x0a  /* pin control */
#define AD1848_TEST_INIT      0x0b  /* test and initialization */
#define AD1848_MISC_INFO      0x0c  /* miscellaneous information */
#define AD1848_LOOPBACK       0x0d  /* loopback control */
#define AD1848_DATA_UPR_CNT   0x0e  /* playback/capture upper base count */
#define AD1848_DATA_LWR_CNT   0x0f  /* playback/capture lower base count */

/* definitions for codec register select port - CODECP( REGSEL ) */

#define AD1848_INIT           0x80  /* CODEC is initializing */
#define AD1848_MCE            0x40  /* mode change enable */
#define AD1848_TRD            0x20  /* transfer request disable */

/* definitions for codec status register - CODECP( STATUS ) */

#define AD1848_GLOBALIRQ      0x01  /* IRQ is active */

/* definitions for AD1848_LEFT_INPUT and AD1848_RIGHT_INPUT registers */

#define AD1848_ENABLE_MIC_GAIN      0x20

#define AD1848_MIXS_LINE1     0x00
#define AD1848_MIXS_AUX1      0x40
#define AD1848_MIXS_LINE2     0x80
#define AD1848_MIXS_ALL       0xc0

/* definitions for clock and data format register - AD1848_PLAYBK_FORMAT */

#define AD1848_LINEAR_8       0x00  /* 8-bit unsigned data */
#define AD1848_ALAW_8         0x60  /* 8-bit A-law companded */
#define AD1848_ULAW_8         0x20  /* 8-bit U-law companded */
#define AD1848_LINEAR_16      0x40  /* 16-bit twos complement data - little endian */
#define AD1848_STEREO         0x10  /* stereo mode */
/* bits 3-1 define frequency divisor */
#define AD1848_XTAL1          0x00  /* 24.576 crystal */
#define AD1848_XTAL2          0x01  /* 16.9344 crystal */

/* definitions for interface control register - AD1848_IFACE_CTRL */

#define AD1848_CAPTURE_PIO    0x80  /* capture PIO enable */
#define AD1848_PLAYBACK_PIO   0x40  /* playback PIO enable */
#define AD1848_CALIB_MODE     0x18  /* calibration mode bits */
#define AD1848_AUTOCALIB      0x08  /* auto calibrate */
#define AD1848_SINGLE_DMA     0x04  /* use single DMA channel */
#define AD1848_CAPTURE_ENABLE 0x02  /* capture enable */
#define AD1848_PLAYBACK_ENABLE      0x01  /* playback enable */

/* definitions for pin control register - AD1848_PIN_CTRL */

#define AD1848_IRQ_ENABLE     0x02  /* enable IRQ */
#define AD1848_XCTL1          0x40  /* external control #1 */
#define AD1848_XCTL0          0x80  /* external control #0 */

/* definitions for test and init register - AD1848_TEST_INIT */

#define AD1848_CALIB_IN_PROGRESS 0x20     /* auto calibrate in progress */
#define AD1848_DMA_REQUEST    0x10  /* DMA request in progress */

/* defines for codec.mode */

#define AD1848_MODE_NONE      0x0000
#define AD1848_MODE_PLAY      0x0001
#define AD1848_MODE_CAPTURE   0x0002
#define AD1848_MODE_TIMER     0x0004
#define AD1848_MODE_OPEN      (AD1848_MODE_PLAY|AD1848_MODE_CAPTURE|AD1848_MODE_TIMER)
#define AD1848_MODE_RUNNING   0x0010

/* defines for codec.hardware */

#define AD1848_HW_DETECT      0x0000      /* let AD1848 driver detect chip */
#define AD1848_HW_AD1847      0x0001      /* AD1847 chip */
#define AD1848_HW_AD1848      0x0002      /* AD1848 chip */
#define AD1848_HW_CS4248      0x0003      /* CS4248 chip */
#define AD1848_HW_CMI8330     0x0004      /* CMI8330 chip */
#define AD1848_HW_THINKPAD    0x0005      /* Thinkpad 360/750/755 */

/* IBM Thinkpad specific stuff */
#define AD1848_THINKPAD_CTL_PORT1         0x15e8
#define AD1848_THINKPAD_CTL_PORT2         0x15e9
#define AD1848_THINKPAD_CS4248_ENABLE_BIT 0x02

struct snd_ad1848 {
      unsigned long port;           /* i/o port */
      struct resource *res_port;
      int irq;                /* IRQ line */
      int dma;                /* data DMA */
      unsigned short version;       /* version of CODEC chip */
      unsigned short mode;          /* see to AD1848_MODE_XXXX */
      unsigned short hardware;      /* see to AD1848_HW_XXXX */
      unsigned short single_dma:1;  /* forced single DMA mode (GUS 16-bit daughter board) or dma1 == dma2 */

      struct snd_pcm *pcm;
      struct snd_pcm_substream *playback_substream;
      struct snd_pcm_substream *capture_substream;
      struct snd_card *card;

      unsigned char image[32];      /* SGalaxy needs an access to extended registers */
      int mce_bit;
      int calibrate_mute;
      int dma_size;
      int thinkpad_flag;            /* Thinkpad CS4248 needs some extra help */

#ifdef CONFIG_PM
      void (*suspend)(struct snd_ad1848 *chip);
      void (*resume)(struct snd_ad1848 *chip);
#endif

      spinlock_t reg_lock;
};

/* exported functions */

void snd_ad1848_out(struct snd_ad1848 *chip, unsigned char reg, unsigned char value);

int snd_ad1848_create(struct snd_card *card,
                  unsigned long port,
                  int irq, int dma,
                  unsigned short hardware,
                  struct snd_ad1848 ** chip);

int snd_ad1848_pcm(struct snd_ad1848 * chip, int device, struct snd_pcm **rpcm);
const struct snd_pcm_ops *snd_ad1848_get_pcm_ops(int direction);
int snd_ad1848_mixer(struct snd_ad1848 * chip);

/* exported mixer stuffs */
enum { AD1848_MIX_SINGLE, AD1848_MIX_DOUBLE, AD1848_MIX_CAPTURE };

#define AD1848_MIXVAL_SINGLE(reg, shift, mask, invert) \
      ((reg) | ((shift) << 8) | ((mask) << 16) | ((invert) << 24))
#define AD1848_MIXVAL_DOUBLE(left_reg, right_reg, shift_left, shift_right, mask, invert) \
      ((left_reg) | ((right_reg) << 8) | ((shift_left) << 16) | ((shift_right) << 19) | ((mask) << 24) | ((invert) << 22))

/* for ease of use */
struct ad1848_mix_elem {
      const char *name;
      int index;
      int type;
      unsigned long private_value;
      const unsigned int *tlv;
};

#define AD1848_SINGLE(xname, xindex, reg, shift, mask, invert) \
{ .name = xname, \
  .index = xindex, \
  .type = AD1848_MIX_SINGLE, \
  .private_value = AD1848_MIXVAL_SINGLE(reg, shift, mask, invert) }

#define AD1848_SINGLE_TLV(xname, xindex, reg, shift, mask, invert, xtlv) \
{ .name = xname, \
  .index = xindex, \
  .type = AD1848_MIX_SINGLE, \
  .private_value = AD1848_MIXVAL_SINGLE(reg, shift, mask, invert), \
  .tlv = xtlv }

#define AD1848_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
{ .name = xname, \
  .index = xindex, \
  .type = AD1848_MIX_DOUBLE, \
  .private_value = AD1848_MIXVAL_DOUBLE(left_reg, right_reg, shift_left, shift_right, mask, invert) }

#define AD1848_DOUBLE_TLV(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert, xtlv) \
{ .name = xname, \
  .index = xindex, \
  .type = AD1848_MIX_DOUBLE, \
  .private_value = AD1848_MIXVAL_DOUBLE(left_reg, right_reg, shift_left, shift_right, mask, invert), \
  .tlv = xtlv }

int snd_ad1848_add_ctl_elem(struct snd_ad1848 *chip, const struct ad1848_mix_elem *c);

#endif /* __SOUND_AD1848_H */

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