/*
 *  Driver for Ensoniq ES1370/ES1371 AudioPCI soundcard
 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>,
 *                   Thomas Sailer <sailer@ife.ee.ethz.ch>
 *
 *   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
 *
 */

/* Power-Management-Code ( CONFIG_PM )
 * for ens1371 only ( FIXME )
 * derived from cs4281.c, atiixp.c and via82xx.c
 * using http://www.alsa-project.org/~tiwai/writing-an-alsa-driver/ 
 * by Kurt J. Bosch
 */

#include <linux/io.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/gameport.h>
#include <linux/module.h>
#include <linux/mutex.h>

#include <sound/core.h>
#include <sound/control.h>
#include <sound/pcm.h>
#include <sound/rawmidi.h>
#ifdef CHIP1371
#include <sound/ac97_codec.h>
#else
#include <sound/ak4531_codec.h>
#endif
#include <sound/initval.h>
#include <sound/asoundef.h>

#ifndef CHIP1371
#undef CHIP1370
#define CHIP1370
#endif

#ifdef CHIP1370
#define DRIVER_NAME "ENS1370"
#define CHIP_NAME "ES1370" /* it can be ENS but just to keep compatibility... */
#else
#define DRIVER_NAME "ENS1371"
#define CHIP_NAME "ES1371"
#endif


MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>, Thomas Sailer <sailer@ife.ee.ethz.ch>");
MODULE_LICENSE("GPL");
#ifdef CHIP1370
MODULE_DESCRIPTION("Ensoniq AudioPCI ES1370");
MODULE_SUPPORTED_DEVICE("{{Ensoniq,AudioPCI-97 ES1370},"
                "{Creative Labs,SB PCI64/128 (ES1370)}}");
#endif
#ifdef CHIP1371
MODULE_DESCRIPTION("Ensoniq/Creative AudioPCI ES1371+");
MODULE_SUPPORTED_DEVICE("{{Ensoniq,AudioPCI ES1371/73},"
                "{Ensoniq,AudioPCI ES1373},"
                "{Creative Labs,Ectiva EV1938},"
                "{Creative Labs,SB PCI64/128 (ES1371/73)},"
                "{Creative Labs,Vibra PCI128},"
                "{Ectiva,EV1938}}");
#endif

#if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
#define SUPPORT_JOYSTICK
#endif

static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;     /* Enable switches */
#ifdef SUPPORT_JOYSTICK
#ifdef CHIP1371
static int joystick_port[SNDRV_CARDS];
#else
static bool joystick[SNDRV_CARDS];
#endif
#endif
#ifdef CHIP1371
static int spdif[SNDRV_CARDS];
static int lineio[SNDRV_CARDS];
#endif

module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for Ensoniq AudioPCI soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for Ensoniq AudioPCI soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable Ensoniq AudioPCI soundcard.");
#ifdef SUPPORT_JOYSTICK
#ifdef CHIP1371
module_param_array(joystick_port, int, NULL, 0444);
MODULE_PARM_DESC(joystick_port, "Joystick port address.");
#else
module_param_array(joystick, bool, NULL, 0444);
MODULE_PARM_DESC(joystick, "Enable joystick.");
#endif
#endif /* SUPPORT_JOYSTICK */
#ifdef CHIP1371
module_param_array(spdif, int, NULL, 0444);
MODULE_PARM_DESC(spdif, "S/PDIF output (-1 = none, 0 = auto, 1 = force).");
module_param_array(lineio, int, NULL, 0444);
MODULE_PARM_DESC(lineio, "Line In to Rear Out (0 = auto, 1 = force).");
#endif

/* ES1371 chip ID */
/* This is a little confusing because all ES1371 compatible chips have the
   same DEVICE_ID, the only thing differentiating them is the REV_ID field.
   This is only significant if you want to enable features on the later parts.
   Yes, I know it's stupid and why didn't we use the sub IDs?
*/
#define ES1371REV_ES1373_A  0x04
#define ES1371REV_ES1373_B  0x06
#define ES1371REV_CT5880_A  0x07
#define CT5880REV_CT5880_C  0x02
#define CT5880REV_CT5880_D  0x03        /* ??? -jk */
#define CT5880REV_CT5880_E  0x04        /* mw */
#define ES1371REV_ES1371_B  0x09
#define EV1938REV_EV1938_A  0x00
#define ES1371REV_ES1373_8  0x08

/*
 * Direct registers
 */

#define ES_REG(ensoniq, x) ((ensoniq)->port + ES_REG_##x)

#define ES_REG_CONTROL  0x00    /* R/W: Interrupt/Chip select control register */
#define   ES_1370_ADC_STOP      (1<<31)         /* disable capture buffer transfers */
#define   ES_1370_XCTL1         (1<<30)         /* general purpose output bit */
#define   ES_1373_BYPASS_P1     (1<<31)         /* bypass SRC for PB1 */
#define   ES_1373_BYPASS_P2     (1<<30)         /* bypass SRC for PB2 */
#define   ES_1373_BYPASS_R      (1<<29)         /* bypass SRC for REC */
#define   ES_1373_TEST_BIT      (1<<28)         /* should be set to 0 for normal operation */
#define   ES_1373_RECEN_B       (1<<27)         /* mix record with playback for I2S/SPDIF out */
#define   ES_1373_SPDIF_THRU    (1<<26)         /* 0 = SPDIF thru mode, 1 = SPDIF == dig out */
#define   ES_1371_JOY_ASEL(o)   (((o)&0x03)<<24)/* joystick port mapping */
#define   ES_1371_JOY_ASELM     (0x03<<24)      /* mask for above */
#define   ES_1371_JOY_ASELI(i)  (((i)>>24)&0x03)
#define   ES_1371_GPIO_IN(i)    (((i)>>20)&0x0f)/* GPIO in [3:0] pins - R/O */
#define   ES_1370_PCLKDIVO(o)   (((o)&0x1fff)<<16)/* clock divide ratio for DAC2 */
#define   ES_1370_PCLKDIVM      ((0x1fff)<<16)  /* mask for above */
#define   ES_1370_PCLKDIVI(i)   (((i)>>16)&0x1fff)/* clock divide ratio for DAC2 */
#define   ES_1371_GPIO_OUT(o)   (((o)&0x0f)<<16)/* GPIO out [3:0] pins - W/R */
#define   ES_1371_GPIO_OUTM     (0x0f<<16)      /* mask for above */
#define   ES_MSFMTSEL           (1<<15)         /* MPEG serial data format; 0 = SONY, 1 = I2S */
#define   ES_1370_M_SBB         (1<<14)         /* clock source for DAC - 0 = clock generator; 1 = MPEG clocks */
#define   ES_1371_SYNC_RES      (1<<14)         /* Warm AC97 reset */
#define   ES_1370_WTSRSEL(o)    (((o)&0x03)<<12)/* fixed frequency clock for DAC1 */
#define   ES_1370_WTSRSELM      (0x03<<12)      /* mask for above */
#define   ES_1371_ADC_STOP      (1<<13)         /* disable CCB transfer capture information */
#define   ES_1371_PWR_INTRM     (1<<12)         /* power level change interrupts enable */
#define   ES_1370_DAC_SYNC      (1<<11)         /* DAC's are synchronous */
#define   ES_1371_M_CB          (1<<11)         /* capture clock source; 0 = AC'97 ADC; 1 = I2S */
#define   ES_CCB_INTRM          (1<<10)         /* CCB voice interrupts enable */
#define   ES_1370_M_CB          (1<<9)          /* capture clock source; 0 = ADC; 1 = MPEG */
#define   ES_1370_XCTL0         (1<<8)          /* generap purpose output bit */
#define   ES_1371_PDLEV(o)      (((o)&0x03)<<8) /* current power down level */
#define   ES_1371_PDLEVM        (0x03<<8)       /* mask for above */
#define   ES_BREQ               (1<<7)          /* memory bus request enable */
#define   ES_DAC1_EN            (1<<6)          /* DAC1 playback channel enable */
#define   ES_DAC2_EN            (1<<5)          /* DAC2 playback channel enable */
#define   ES_ADC_EN             (1<<4)          /* ADC capture channel enable */
#define   ES_UART_EN            (1<<3)          /* UART enable */
#define   ES_JYSTK_EN           (1<<2)          /* Joystick module enable */
#define   ES_1370_CDC_EN        (1<<1)          /* Codec interface enable */
#define   ES_1371_XTALCKDIS     (1<<1)          /* Xtal clock disable */
#define   ES_1370_SERR_DISABLE  (1<<0)          /* PCI serr signal disable */
#define   ES_1371_PCICLKDIS     (1<<0)          /* PCI clock disable */
#define ES_REG_STATUS   0x04    /* R/O: Interrupt/Chip select status register */
#define   ES_INTR               (1<<31)         /* Interrupt is pending */
#define   ES_1371_ST_AC97_RST   (1<<29)         /* CT5880 AC'97 Reset bit */
#define   ES_1373_REAR_BIT27    (1<<27)         /* rear bits: 000 - front, 010 - mirror, 101 - separate */
#define   ES_1373_REAR_BIT26    (1<<26)
#define   ES_1373_REAR_BIT24    (1<<24)
#define   ES_1373_GPIO_INT_EN(o)(((o)&0x0f)<<20)/* GPIO [3:0] pins - interrupt enable */
#define   ES_1373_SPDIF_EN      (1<<18)         /* SPDIF enable */
#define   ES_1373_SPDIF_TEST    (1<<17)         /* SPDIF test */
#define   ES_1371_TEST          (1<<16)         /* test ASIC */
#define   ES_1373_GPIO_INT(i)   (((i)&0x0f)>>12)/* GPIO [3:0] pins - interrupt pending */
#define   ES_1370_CSTAT         (1<<10)         /* CODEC is busy or register write in progress */
#define   ES_1370_CBUSY         (1<<9)          /* CODEC is busy */
#define   ES_1370_CWRIP         (1<<8)          /* CODEC register write in progress */
#define   ES_1371_SYNC_ERR      (1<<8)          /* CODEC synchronization error occurred */
#define   ES_1371_VC(i)         (((i)>>6)&0x03) /* voice code from CCB module */
#define   ES_1370_VC(i)         (((i)>>5)&0x03) /* voice code from CCB module */
#define   ES_1371_MPWR          (1<<5)          /* power level interrupt pending */
#define   ES_MCCB               (1<<4)          /* CCB interrupt pending */
#define   ES_UART               (1<<3)          /* UART interrupt pending */
#define   ES_DAC1               (1<<2)          /* DAC1 channel interrupt pending */
#define   ES_DAC2               (1<<1)          /* DAC2 channel interrupt pending */
#define   ES_ADC                (1<<0)          /* ADC channel interrupt pending */
#define ES_REG_UART_DATA 0x08   /* R/W: UART data register */
#define ES_REG_UART_STATUS 0x09 /* R/O: UART status register */
#define   ES_RXINT              (1<<7)          /* RX interrupt occurred */
#define   ES_TXINT              (1<<2)          /* TX interrupt occurred */
#define   ES_TXRDY              (1<<1)          /* transmitter ready */
#define   ES_RXRDY              (1<<0)          /* receiver ready */
#define ES_REG_UART_CONTROL 0x09        /* W/O: UART control register */
#define   ES_RXINTEN            (1<<7)          /* RX interrupt enable */
#define   ES_TXINTENO(o)        (((o)&0x03)<<5) /* TX interrupt enable */
#define   ES_TXINTENM           (0x03<<5)       /* mask for above */
#define   ES_TXINTENI(i)        (((i)>>5)&0x03)
#define   ES_CNTRL(o)           (((o)&0x03)<<0) /* control */
#define   ES_CNTRLM             (0x03<<0)       /* mask for above */
#define ES_REG_UART_RES 0x0a    /* R/W: UART reserver register */
#define   ES_TEST_MODE          (1<<0)          /* test mode enabled */
#define ES_REG_MEM_PAGE 0x0c    /* R/W: Memory page register */
#define   ES_MEM_PAGEO(o)       (((o)&0x0f)<<0) /* memory page select - out */
#define   ES_MEM_PAGEM          (0x0f<<0)       /* mask for above */
#define   ES_MEM_PAGEI(i)       (((i)>>0)&0x0f) /* memory page select - in */
#define ES_REG_1370_CODEC 0x10  /* W/O: Codec write register address */
#define   ES_1370_CODEC_WRITE(a,d) ((((a)&0xff)<<8)|(((d)&0xff)<<0))
#define ES_REG_1371_CODEC 0x14  /* W/R: Codec Read/Write register address */
#define   ES_1371_CODEC_RDY        (1<<31)      /* codec ready */
#define   ES_1371_CODEC_WIP        (1<<30)      /* codec register access in progress */
#define   EV_1938_CODEC_MAGIC      (1<<26)
#define   ES_1371_CODEC_PIRD       (1<<23)      /* codec read/write select register */
#define   ES_1371_CODEC_WRITE(a,d) ((((a)&0x7f)<<16)|(((d)&0xffff)<<0))
#define   ES_1371_CODEC_READS(a)   ((((a)&0x7f)<<16)|ES_1371_CODEC_PIRD)
#define   ES_1371_CODEC_READ(i)    (((i)>>0)&0xffff)

#define ES_REG_1371_SMPRATE 0x10        /* W/R: Codec rate converter interface register */
#define   ES_1371_SRC_RAM_ADDRO(o) (((o)&0x7f)<<25)/* address of the sample rate converter */
#define   ES_1371_SRC_RAM_ADDRM    (0x7f<<25)   /* mask for above */
#define   ES_1371_SRC_RAM_ADDRI(i) (((i)>>25)&0x7f)/* address of the sample rate converter */
#define   ES_1371_SRC_RAM_WE       (1<<24)      /* R/W: read/write control for sample rate converter */
#define   ES_1371_SRC_RAM_BUSY     (1<<23)      /* R/O: sample rate memory is busy */
#define   ES_1371_SRC_DISABLE      (1<<22)      /* sample rate converter disable */
#define   ES_1371_DIS_P1           (1<<21)      /* playback channel 1 accumulator update disable */
#define   ES_1371_DIS_P2           (1<<20)      /* playback channel 1 accumulator update disable */
#define   ES_1371_DIS_R1           (1<<19)      /* capture channel accumulator update disable */
#define   ES_1371_SRC_RAM_DATAO(o) (((o)&0xffff)<<0)/* current value of the sample rate converter */
#define   ES_1371_SRC_RAM_DATAM    (0xffff<<0)  /* mask for above */
#define   ES_1371_SRC_RAM_DATAI(i) (((i)>>0)&0xffff)/* current value of the sample rate converter */

#define ES_REG_1371_LEGACY 0x18 /* W/R: Legacy control/status register */
#define   ES_1371_JFAST         (1<<31)         /* fast joystick timing */
#define   ES_1371_HIB           (1<<30)         /* host interrupt blocking enable */
#define   ES_1371_VSB           (1<<29)         /* SB; 0 = addr 0x220xH, 1 = 0x22FxH */
#define   ES_1371_VMPUO(o)      (((o)&0x03)<<27)/* base register address; 0 = 0x320xH; 1 = 0x330xH; 2 = 0x340xH; 3 = 0x350xH */
#define   ES_1371_VMPUM         (0x03<<27)      /* mask for above */
#define   ES_1371_VMPUI(i)      (((i)>>27)&0x03)/* base register address */
#define   ES_1371_VCDCO(o)      (((o)&0x03)<<25)/* CODEC; 0 = 0x530xH; 1 = undefined; 2 = 0xe80xH; 3 = 0xF40xH */
#define   ES_1371_VCDCM         (0x03<<25)      /* mask for above */
#define   ES_1371_VCDCI(i)      (((i)>>25)&0x03)/* CODEC address */
#define   ES_1371_FIRQ          (1<<24)         /* force an interrupt */
#define   ES_1371_SDMACAP       (1<<23)         /* enable event capture for slave DMA controller */
#define   ES_1371_SPICAP        (1<<22)         /* enable event capture for slave IRQ controller */
#define   ES_1371_MDMACAP       (1<<21)         /* enable event capture for master DMA controller */
#define   ES_1371_MPICAP        (1<<20)         /* enable event capture for master IRQ controller */
#define   ES_1371_ADCAP         (1<<19)         /* enable event capture for ADLIB register; 0x388xH */
#define   ES_1371_SVCAP         (1<<18)         /* enable event capture for SB registers */
#define   ES_1371_CDCCAP        (1<<17)         /* enable event capture for CODEC registers */
#define   ES_1371_BACAP         (1<<16)         /* enable event capture for SoundScape base address */
#define   ES_1371_EXI(i)        (((i)>>8)&0x07) /* event number */
#define   ES_1371_AI(i)         (((i)>>3)&0x1f) /* event significant I/O address */
#define   ES_1371_WR            (1<<2)  /* event capture; 0 = read; 1 = write */
#define   ES_1371_LEGINT        (1<<0)  /* interrupt for legacy events; 0 = interrupt did occur */

#define ES_REG_CHANNEL_STATUS 0x1c /* R/W: first 32-bits from S/PDIF channel status block, es1373 */

#define ES_REG_SERIAL   0x20    /* R/W: Serial interface control register */
#define   ES_1371_DAC_TEST      (1<<22)         /* DAC test mode enable */
#define   ES_P2_END_INCO(o)     (((o)&0x07)<<19)/* binary offset value to increment / loop end */
#define   ES_P2_END_INCM        (0x07<<19)      /* mask for above */
#define   ES_P2_END_INCI(i)     (((i)>>16)&0x07)/* binary offset value to increment / loop end */
#define   ES_P2_ST_INCO(o)      (((o)&0x07)<<16)/* binary offset value to increment / start */
#define   ES_P2_ST_INCM         (0x07<<16)      /* mask for above */
#define   ES_P2_ST_INCI(i)      (((i)<<16)&0x07)/* binary offset value to increment / start */
#define   ES_R1_LOOP_SEL        (1<<15)         /* ADC; 0 - loop mode; 1 = stop mode */
#define   ES_P2_LOOP_SEL        (1<<14)         /* DAC2; 0 - loop mode; 1 = stop mode */
#define   ES_P1_LOOP_SEL        (1<<13)         /* DAC1; 0 - loop mode; 1 = stop mode */
#define   ES_P2_PAUSE           (1<<12)         /* DAC2; 0 - play mode; 1 = pause mode */
#define   ES_P1_PAUSE           (1<<11)         /* DAC1; 0 - play mode; 1 = pause mode */
#define   ES_R1_INT_EN          (1<<10)         /* ADC interrupt enable */
#define   ES_P2_INT_EN          (1<<9)          /* DAC2 interrupt enable */
#define   ES_P1_INT_EN          (1<<8)          /* DAC1 interrupt enable */
#define   ES_P1_SCT_RLD         (1<<7)          /* force sample counter reload for DAC1 */
#define   ES_P2_DAC_SEN         (1<<6)          /* when stop mode: 0 - DAC2 play back zeros; 1 = DAC2 play back last sample */
#define   ES_R1_MODEO(o)        (((o)&0x03)<<4) /* ADC mode; 0 = 8-bit mono; 1 = 8-bit stereo; 2 = 16-bit mono; 3 = 16-bit stereo */
#define   ES_R1_MODEM           (0x03<<4)       /* mask for above */
#define   ES_R1_MODEI(i)        (((i)>>4)&0x03)
#define   ES_P2_MODEO(o)        (((o)&0x03)<<2) /* DAC2 mode; -- '' -- */
#define   ES_P2_MODEM           (0x03<<2)       /* mask for above */
#define   ES_P2_MODEI(i)        (((i)>>2)&0x03)
#define   ES_P1_MODEO(o)        (((o)&0x03)<<0) /* DAC1 mode; -- '' -- */
#define   ES_P1_MODEM           (0x03<<0)       /* mask for above */
#define   ES_P1_MODEI(i)        (((i)>>0)&0x03)

#define ES_REG_DAC1_COUNT 0x24  /* R/W: DAC1 sample count register */
#define ES_REG_DAC2_COUNT 0x28  /* R/W: DAC2 sample count register */
#define ES_REG_ADC_COUNT  0x2c  /* R/W: ADC sample count register */
#define   ES_REG_CURR_COUNT(i)  (((i)>>16)&0xffff)
#define   ES_REG_COUNTO(o)      (((o)&0xffff)<<0)
#define   ES_REG_COUNTM         (0xffff<<0)
#define   ES_REG_COUNTI(i)      (((i)>>0)&0xffff)

#define ES_REG_DAC1_FRAME 0x30  /* R/W: PAGE 0x0c; DAC1 frame address */
#define ES_REG_DAC1_SIZE  0x34  /* R/W: PAGE 0x0c; DAC1 frame size */
#define ES_REG_DAC2_FRAME 0x38  /* R/W: PAGE 0x0c; DAC2 frame address */
#define ES_REG_DAC2_SIZE  0x3c  /* R/W: PAGE 0x0c; DAC2 frame size */
#define ES_REG_ADC_FRAME  0x30  /* R/W: PAGE 0x0d; ADC frame address */
#define ES_REG_ADC_SIZE   0x34  /* R/W: PAGE 0x0d; ADC frame size */
#define   ES_REG_FCURR_COUNTO(o) (((o)&0xffff)<<16)
#define   ES_REG_FCURR_COUNTM    (0xffff<<16)
#define   ES_REG_FCURR_COUNTI(i) (((i)>>14)&0x3fffc)
#define   ES_REG_FSIZEO(o)       (((o)&0xffff)<<0)
#define   ES_REG_FSIZEM          (0xffff<<0)
#define   ES_REG_FSIZEI(i)       (((i)>>0)&0xffff)
#define ES_REG_PHANTOM_FRAME 0x38 /* R/W: PAGE 0x0d: phantom frame address */
#define ES_REG_PHANTOM_COUNT 0x3c /* R/W: PAGE 0x0d: phantom frame count */

#define ES_REG_UART_FIFO  0x30  /* R/W: PAGE 0x0e; UART FIFO register */
#define   ES_REG_UF_VALID        (1<<8)
#define   ES_REG_UF_BYTEO(o)     (((o)&0xff)<<0)
#define   ES_REG_UF_BYTEM        (0xff<<0)
#define   ES_REG_UF_BYTEI(i)     (((i)>>0)&0xff)


/*
 *  Pages
 */

#define ES_PAGE_DAC     0x0c
#define ES_PAGE_ADC     0x0d
#define ES_PAGE_UART    0x0e
#define ES_PAGE_UART1   0x0f

/*
 *  Sample rate converter addresses
 */

#define ES_SMPREG_DAC1          0x70
#define ES_SMPREG_DAC2          0x74
#define ES_SMPREG_ADC           0x78
#define ES_SMPREG_VOL_ADC       0x6c
#define ES_SMPREG_VOL_DAC1      0x7c
#define ES_SMPREG_VOL_DAC2      0x7e
#define ES_SMPREG_TRUNC_N       0x00
#define ES_SMPREG_INT_REGS      0x01
#define ES_SMPREG_ACCUM_FRAC    0x02
#define ES_SMPREG_VFREQ_FRAC    0x03

/*
 *  Some contants
 */

#define ES_1370_SRCLOCK    1411200
#define ES_1370_SRTODIV(x) (ES_1370_SRCLOCK/(x)-2)

/*
 *  Open modes
 */

#define ES_MODE_PLAY1   0x0001
#define ES_MODE_PLAY2   0x0002
#define ES_MODE_CAPTURE 0x0004

#define ES_MODE_OUTPUT  0x0001  /* for MIDI */
#define ES_MODE_INPUT   0x0002  /* for MIDI */

/*

 */

struct ensoniq {
        spinlock_t reg_lock;
        struct mutex src_mutex;

        int irq;

        unsigned long playback1size;
        unsigned long playback2size;
        unsigned long capture3size;

        unsigned long port;
        unsigned int mode;
        unsigned int uartm;     /* UART mode */

        unsigned int ctrl;      /* control register */
        unsigned int sctrl;     /* serial control register */
        unsigned int cssr;      /* control status register */
        unsigned int uartc;     /* uart control register */
        unsigned int rev;       /* chip revision */

        union {
#ifdef CHIP1371
                struct {
                        struct snd_ac97 *ac97;
                } es1371;
#else
                struct {
                        int pclkdiv_lock;
                        struct snd_ak4531 *ak4531;
                } es1370;
#endif
        } u;

        struct pci_dev *pci;
        struct snd_card *card;
        struct snd_pcm *pcm1;   /* DAC1/ADC PCM */
        struct snd_pcm *pcm2;   /* DAC2 PCM */
        struct snd_pcm_substream *playback1_substream;
        struct snd_pcm_substream *playback2_substream;
        struct snd_pcm_substream *capture_substream;
        unsigned int p1_dma_size;
        unsigned int p2_dma_size;
        unsigned int c_dma_size;
        unsigned int p1_period_size;
        unsigned int p2_period_size;
        unsigned int c_period_size;
        struct snd_rawmidi *rmidi;
        struct snd_rawmidi_substream *midi_input;
        struct snd_rawmidi_substream *midi_output;

        unsigned int spdif;
        unsigned int spdif_default;
        unsigned int spdif_stream;

#ifdef CHIP1370
        struct snd_dma_buffer dma_bug;
#endif

#ifdef SUPPORT_JOYSTICK
        struct gameport *gameport;
#endif
};

static irqreturn_t snd_audiopci_interrupt(int irq, void *dev_id);

static const struct pci_device_id snd_audiopci_ids[] = {
#ifdef CHIP1370
        { PCI_VDEVICE(ENSONIQ, 0x5000), 0, },   /* ES1370 */
#endif
#ifdef CHIP1371
        { PCI_VDEVICE(ENSONIQ, 0x1371), 0, },   /* ES1371 */
        { PCI_VDEVICE(ENSONIQ, 0x5880), 0, },   /* ES1373 - CT5880 */
        { PCI_VDEVICE(ECTIVA, 0x8938), 0, },    /* Ectiva EV1938 */
#endif
        { 0, }
};

MODULE_DEVICE_TABLE(pci, snd_audiopci_ids);

/*
 *  constants
 */

#define POLL_COUNT      0xa000

#ifdef CHIP1370
static unsigned int snd_es1370_fixed_rates[] =
        {5512, 11025, 22050, 44100};
static struct snd_pcm_hw_constraint_list snd_es1370_hw_constraints_rates = {
        .count = 4, 
        .list = snd_es1370_fixed_rates,
        .mask = 0,
};
static struct snd_ratnum es1370_clock = {
        .num = ES_1370_SRCLOCK,
        .den_min = 29, 
        .den_max = 353,
        .den_step = 1,
};
static struct snd_pcm_hw_constraint_ratnums snd_es1370_hw_constraints_clock = {
        .nrats = 1,
        .rats = &es1370_clock,
};
#else
static struct snd_ratden es1371_dac_clock = {
        .num_min = 3000 * (1 << 15),
        .num_max = 48000 * (1 << 15),
        .num_step = 3000,
        .den = 1 << 15,
};
static struct snd_pcm_hw_constraint_ratdens snd_es1371_hw_constraints_dac_clock = {
        .nrats = 1,
        .rats = &es1371_dac_clock,
};
static struct snd_ratnum es1371_adc_clock = {
        .num = 48000 << 15,
        .den_min = 32768, 
        .den_max = 393216,
        .den_step = 1,
};
static struct snd_pcm_hw_constraint_ratnums snd_es1371_hw_constraints_adc_clock = {
        .nrats = 1,
        .rats = &es1371_adc_clock,
};
#endif
static const unsigned int snd_ensoniq_sample_shift[] =
        {0, 1, 1, 2};

/*
 *  common I/O routines
 */

#ifdef CHIP1371

static unsigned int snd_es1371_wait_src_ready(struct ensoniq * ensoniq)
{
        unsigned int t, r = 0;

        for (t = 0; t < POLL_COUNT; t++) {
                r = inl(ES_REG(ensoniq, 1371_SMPRATE));
                if ((r & ES_1371_SRC_RAM_BUSY) == 0)
                        return r;
                cond_resched();
        }
        dev_err(ensoniq->card->dev, "wait src ready timeout 0x%lx [0x%x]\n",
                   ES_REG(ensoniq, 1371_SMPRATE), r);
        return 0;
}

static unsigned int snd_es1371_src_read(struct ensoniq * ensoniq, unsigned short reg)
{
        unsigned int temp, i, orig, r;

        /* wait for ready */
        temp = orig = snd_es1371_wait_src_ready(ensoniq);

        /* expose the SRC state bits */
        r = temp & (ES_1371_SRC_DISABLE | ES_1371_DIS_P1 |
                    ES_1371_DIS_P2 | ES_1371_DIS_R1);
        r |= ES_1371_SRC_RAM_ADDRO(reg) | 0x10000;
        outl(r, ES_REG(ensoniq, 1371_SMPRATE));

        /* now, wait for busy and the correct time to read */
        temp = snd_es1371_wait_src_ready(ensoniq);
        
        if ((temp & 0x00870000) != 0x00010000) {
                /* wait for the right state */
                for (i = 0; i < POLL_COUNT; i++) {
                        temp = inl(ES_REG(ensoniq, 1371_SMPRATE));
                        if ((temp & 0x00870000) == 0x00010000)
                                break;
                }
        }

        /* hide the state bits */       
        r = orig & (ES_1371_SRC_DISABLE | ES_1371_DIS_P1 |
                   ES_1371_DIS_P2 | ES_1371_DIS_R1);
        r |= ES_1371_SRC_RAM_ADDRO(reg);
        outl(r, ES_REG(ensoniq, 1371_SMPRATE));
        
        return temp;
}

static void snd_es1371_src_write(struct ensoniq * ensoniq,
                                 unsigned short reg, unsigned short data)
{
        unsigned int r;

        r = snd_es1371_wait_src_ready(ensoniq) &
            (ES_1371_SRC_DISABLE | ES_1371_DIS_P1 |
             ES_1371_DIS_P2 | ES_1371_DIS_R1);
        r |= ES_1371_SRC_RAM_ADDRO(reg) | ES_1371_SRC_RAM_DATAO(data);
        outl(r | ES_1371_SRC_RAM_WE, ES_REG(ensoniq, 1371_SMPRATE));
}

#endif /* CHIP1371 */

#ifdef CHIP1370

static void snd_es1370_codec_write(struct snd_ak4531 *ak4531,
                                   unsigned short reg, unsigned short val)
{
        struct ensoniq *ensoniq = ak4531->private_data;
        unsigned long end_time = jiffies + HZ / 10;

#if 0
        dev_dbg(ensoniq->card->dev,
               "CODEC WRITE: reg = 0x%x, val = 0x%x (0x%x), creg = 0x%x\n",
               reg, val, ES_1370_CODEC_WRITE(reg, val), ES_REG(ensoniq, 1370_CODEC));
#endif
        do {
                if (!(inl(ES_REG(ensoniq, STATUS)) & ES_1370_CSTAT)) {
                        outw(ES_1370_CODEC_WRITE(reg, val), ES_REG(ensoniq, 1370_CODEC));
                        return;
                }
                schedule_timeout_uninterruptible(1);
        } while (time_after(end_time, jiffies));
        dev_err(ensoniq->card->dev, "codec write timeout, status = 0x%x\n",
                   inl(ES_REG(ensoniq, STATUS)));
}

#endif /* CHIP1370 */

#ifdef CHIP1371

static inline bool is_ev1938(struct ensoniq *ensoniq)
{
        return ensoniq->pci->device == 0x8938;
}

static void snd_es1371_codec_write(struct snd_ac97 *ac97,
                                   unsigned short reg, unsigned short val)
{
        struct ensoniq *ensoniq = ac97->private_data;
        unsigned int t, x, flag;

        flag = is_ev1938(ensoniq) ? EV_1938_CODEC_MAGIC : 0;
        mutex_lock(&ensoniq->src_mutex);
        for (t = 0; t < POLL_COUNT; t++) {
                if (!(inl(ES_REG(ensoniq, 1371_CODEC)) & ES_1371_CODEC_WIP)) {
                        /* save the current state for latter */
                        x = snd_es1371_wait_src_ready(ensoniq);
                        outl((x & (ES_1371_SRC_DISABLE | ES_1371_DIS_P1 |
                                   ES_1371_DIS_P2 | ES_1371_DIS_R1)) | 0x00010000,
                             ES_REG(ensoniq, 1371_SMPRATE));
                        /* wait for not busy (state 0) first to avoid
                           transition states */
                        for (t = 0; t < POLL_COUNT; t++) {
                                if ((inl(ES_REG(ensoniq, 1371_SMPRATE)) & 0x00870000) ==
                                    0x00000000)
                                        break;
                        }
                        /* wait for a SAFE time to write addr/data and then do it, dammit */
                        for (t = 0; t < POLL_COUNT; t++) {
                                if ((inl(ES_REG(ensoniq, 1371_SMPRATE)) & 0x00870000) ==
                                    0x00010000)
                                        break;
                        }
                        outl(ES_1371_CODEC_WRITE(reg, val) | flag,
                             ES_REG(ensoniq, 1371_CODEC));
                        /* restore SRC reg */
                        snd_es1371_wait_src_ready(ensoniq);
                        outl(x, ES_REG(ensoniq, 1371_SMPRATE));
                        mutex_unlock(&ensoniq->src_mutex);
                        return;
                }
        }
        mutex_unlock(&ensoniq->src_mutex);
        dev_err(ensoniq->card->dev, "codec write timeout at 0x%lx [0x%x]\n",
                   ES_REG(ensoniq, 1371_CODEC), inl(ES_REG(ensoniq, 1371_CODEC)));
}

static unsigned short snd_es1371_codec_read(struct snd_ac97 *ac97,
                                            unsigned short reg)
{
        struct ensoniq *ensoniq = ac97->private_data;
        unsigned int t, x, flag, fail = 0;

        flag = is_ev1938(ensoniq) ? EV_1938_CODEC_MAGIC : 0;
      __again:
        mutex_lock(&ensoniq->src_mutex);
        for (t = 0; t < POLL_COUNT; t++) {
                if (!(inl(ES_REG(ensoniq, 1371_CODEC)) & ES_1371_CODEC_WIP)) {
                        /* save the current state for latter */
                        x = snd_es1371_wait_src_ready(ensoniq);
                        outl((x & (ES_1371_SRC_DISABLE | ES_1371_DIS_P1 |
                                   ES_1371_DIS_P2 | ES_1371_DIS_R1)) | 0x00010000,
                             ES_REG(ensoniq, 1371_SMPRATE));
                        /* wait for not busy (state 0) first to avoid
                           transition states */
                        for (t = 0; t < POLL_COUNT; t++) {
                                if ((inl(ES_REG(ensoniq, 1371_SMPRATE)) & 0x00870000) ==
                                    0x00000000)
                                        break;
                        }
                        /* wait for a SAFE time to write addr/data and then do it, dammit */
                        for (t = 0; t < POLL_COUNT; t++) {
                                if ((inl(ES_REG(ensoniq, 1371_SMPRATE)) & 0x00870000) ==
                                    0x00010000)
                                        break;
                        }
                        outl(ES_1371_CODEC_READS(reg) | flag,
                             ES_REG(ensoniq, 1371_CODEC));
                        /* restore SRC reg */
                        snd_es1371_wait_src_ready(ensoniq);
                        outl(x, ES_REG(ensoniq, 1371_SMPRATE));
                        /* wait for WIP again */
                        for (t = 0; t < POLL_COUNT; t++) {
                                if (!(inl(ES_REG(ensoniq, 1371_CODEC)) & ES_1371_CODEC_WIP))
                                        break;          
                        }
                        /* now wait for the stinkin' data (RDY) */
                        for (t = 0; t < POLL_COUNT; t++) {
                                if ((x = inl(ES_REG(ensoniq, 1371_CODEC))) & ES_1371_CODEC_RDY) {
                                        if (is_ev1938(ensoniq)) {
                                                for (t = 0; t < 100; t++)
                                                        inl(ES_REG(ensoniq, CONTROL));
                                                x = inl(ES_REG(ensoniq, 1371_CODEC));
                                        }
                                        mutex_unlock(&ensoniq->src_mutex);
                                        return ES_1371_CODEC_READ(x);
                                }
                        }
                        mutex_unlock(&ensoniq->src_mutex);
                        if (++fail > 10) {
                                dev_err(ensoniq->card->dev,
                                        "codec read timeout (final) at 0x%lx, reg = 0x%x [0x%x]\n",
                                           ES_REG(ensoniq, 1371_CODEC), reg,
                                           inl(ES_REG(ensoniq, 1371_CODEC)));
                                return 0;
                        }
                        goto __again;
                }
        }
        mutex_unlock(&ensoniq->src_mutex);
        dev_err(ensoniq->card->dev, "codec read timeout at 0x%lx [0x%x]\n",
                   ES_REG(ensoniq, 1371_CODEC), inl(ES_REG(ensoniq, 1371_CODEC)));
        return 0;
}

static void snd_es1371_codec_wait(struct snd_ac97 *ac97)
{
        msleep(750);
        snd_es1371_codec_read(ac97, AC97_RESET);
        snd_es1371_codec_read(ac97, AC97_VENDOR_ID1);
        snd_es1371_codec_read(ac97, AC97_VENDOR_ID2);
        msleep(50);
}

static void snd_es1371_adc_rate(struct ensoniq * ensoniq, unsigned int rate)
{
        unsigned int n, truncm, freq, result;

        mutex_lock(&ensoniq->src_mutex);
        n = rate / 3000;
        if ((1 << n) & ((1 << 15) | (1 << 13) | (1 << 11) | (1 << 9)))
                n--;
        truncm = (21 * n - 1) | 1;
        freq = ((48000UL << 15) / rate) * n;
        result = (48000UL << 15) / (freq / n);
        if (rate >= 24000) {
                if (truncm > 239)
                        truncm = 239;
                snd_es1371_src_write(ensoniq, ES_SMPREG_ADC + ES_SMPREG_TRUNC_N,
                                (((239 - truncm) >> 1) << 9) | (n << 4));
        } else {
                if (truncm > 119)
                        truncm = 119;
                snd_es1371_src_write(ensoniq, ES_SMPREG_ADC + ES_SMPREG_TRUNC_N,
                                0x8000 | (((119 - truncm) >> 1) << 9) | (n << 4));
        }
        snd_es1371_src_write(ensoniq, ES_SMPREG_ADC + ES_SMPREG_INT_REGS,
                             (snd_es1371_src_read(ensoniq, ES_SMPREG_ADC +
                                                  ES_SMPREG_INT_REGS) & 0x00ff) |
                             ((freq >> 5) & 0xfc00));
        snd_es1371_src_write(ensoniq, ES_SMPREG_ADC + ES_SMPREG_VFREQ_FRAC, freq & 0x7fff);
        snd_es1371_src_write(ensoniq, ES_SMPREG_VOL_ADC, n << 8);
        snd_es1371_src_write(ensoniq, ES_SMPREG_VOL_ADC + 1, n << 8);
        mutex_unlock(&ensoniq->src_mutex);
}

static void snd_es1371_dac1_rate(struct ensoniq * ensoniq, unsigned int rate)
{
        unsigned int freq, r;

        mutex_lock(&ensoniq->src_mutex);
        freq = ((rate << 15) + 1500) / 3000;
        r = (snd_es1371_wait_src_ready(ensoniq) & (ES_1371_SRC_DISABLE |
                                                   ES_1371_DIS_P2 | ES_1371_DIS_R1)) |
                ES_1371_DIS_P1;
        outl(r, ES_REG(ensoniq, 1371_SMPRATE));
        snd_es1371_src_write(ensoniq, ES_SMPREG_DAC1 + ES_SMPREG_INT_REGS,
                             (snd_es1371_src_read(ensoniq, ES_SMPREG_DAC1 +
                                                  ES_SMPREG_INT_REGS) & 0x00ff) |
                             ((freq >> 5) & 0xfc00));
        snd_es1371_src_write(ensoniq, ES_SMPREG_DAC1 + ES_SMPREG_VFREQ_FRAC, freq & 0x7fff);
        r = (snd_es1371_wait_src_ready(ensoniq) & (ES_1371_SRC_DISABLE |
                                                   ES_1371_DIS_P2 | ES_1371_DIS_R1));
        outl(r, ES_REG(ensoniq, 1371_SMPRATE));
        mutex_unlock(&ensoniq->src_mutex);
}

static void snd_es1371_dac2_rate(struct ensoniq * ensoniq, unsigned int rate)
{
        unsigned int freq, r;

        mutex_lock(&ensoniq->src_mutex);
        freq = ((rate << 15) + 1500) / 3000;
        r = (snd_es1371_wait_src_ready(ensoniq) & (ES_1371_SRC_DISABLE |
                                                   ES_1371_DIS_P1 | ES_1371_DIS_R1)) |
                ES_1371_DIS_P2;
        outl(r, ES_REG(ensoniq, 1371_SMPRATE));
        snd_es1371_src_write(ensoniq, ES_SMPREG_DAC2 + ES_SMPREG_INT_REGS,
                             (snd_es1371_src_read(ensoniq, ES_SMPREG_DAC2 +
                                                  ES_SMPREG_INT_REGS) & 0x00ff) |
                             ((freq >> 5) & 0xfc00));
        snd_es1371_src_write(ensoniq, ES_SMPREG_DAC2 + ES_SMPREG_VFREQ_FRAC,
                             freq & 0x7fff);
        r = (snd_es1371_wait_src_ready(ensoniq) & (ES_1371_SRC_DISABLE |
                                                   ES_1371_DIS_P1 | ES_1371_DIS_R1));
        outl(r, ES_REG(ensoniq, 1371_SMPRATE));
        mutex_unlock(&ensoniq->src_mutex);
}

#endif /* CHIP1371 */

static int snd_ensoniq_trigger(struct snd_pcm_substream *substream, int cmd)
{
        struct ensoniq *ensoniq = snd_pcm_substream_chip(substream);
        switch (cmd) {
        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
        {
                unsigned int what = 0;
                struct snd_pcm_substream *s;
                snd_pcm_group_for_each_entry(s, substream) {
                        if (s == ensoniq->playback1_substream) {
                                what |= ES_P1_PAUSE;
                                snd_pcm_trigger_done(s, substream);
                        } else if (s == ensoniq->playback2_substream) {
                                what |= ES_P2_PAUSE;
                                snd_pcm_trigger_done(s, substream);
                        } else if (s == ensoniq->capture_substream)
                                return -EINVAL;
                }
                spin_lock(&ensoniq->reg_lock);
                if (cmd == SNDRV_PCM_TRIGGER_PAUSE_PUSH)
                        ensoniq->sctrl |= what;
                else
                        ensoniq->sctrl &= ~what;
                outl(ensoniq->sctrl, ES_REG(ensoniq, SERIAL));
                spin_unlock(&ensoniq->reg_lock);
                break;
        }
        case SNDRV_PCM_TRIGGER_START:
        case SNDRV_PCM_TRIGGER_STOP:
        {
                unsigned int what = 0;
                struct snd_pcm_substream *s;
                snd_pcm_group_for_each_entry(s, substream) {
                        if (s == ensoniq->playback1_substream) {
                                what |= ES_DAC1_EN;
                                snd_pcm_trigger_done(s, substream);
                        } else if (s == ensoniq->playback2_substream) {
                                what |= ES_DAC2_EN;
                                snd_pcm_trigger_done(s, substream);
                        } else if (s == ensoniq->capture_substream) {
                                what |= ES_ADC_EN;
                                snd_pcm_trigger_done(s, substream);
                        }
                }
                spin_lock(&ensoniq->reg_lock);
                if (cmd == SNDRV_PCM_TRIGGER_START)
                        ensoniq->ctrl |= what;
                else
                        ensoniq->ctrl &= ~what;
                outl(ensoniq->ctrl, ES_REG(ensoniq, CONTROL));
                spin_unlock(&ensoniq->reg_lock);
                break;
        }
        default:
                return -EINVAL;
        }
        return 0;
}

/*
 *  PCM part
 */

static int snd_ensoniq_hw_params(struct snd_pcm_substream *substream,
                                 struct snd_pcm_hw_params *hw_params)
{
        return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
}

static int snd_ensoniq_hw_free(struct snd_pcm_substream *substream)
{
        return snd_pcm_lib_free_pages(substream);
}

static int snd_ensoniq_playback1_prepare(struct snd_pcm_substream *substream)
{
        struct ensoniq *ensoniq = snd_pcm_substream_chip(substream);
        struct snd_pcm_runtime *runtime = substream->runtime;
        unsigned int mode = 0;

        ensoniq->p1_dma_size = snd_pcm_lib_buffer_bytes(substream);
        ensoniq->p1_period_size = snd_pcm_lib_period_bytes(substream);
        if (snd_pcm_format_width(runtime->format) == 16)
                mode |= 0x02;
        if (runtime->channels > 1)
                mode |= 0x01;
        spin_lock_irq(&ensoniq->reg_lock);
        ensoniq->ctrl &= ~ES_DAC1_EN;
#ifdef CHIP1371
        /* 48k doesn't need SRC (it breaks AC3-passthru) */
        if (runtime->rate == 48000)
                ensoniq->ctrl |= ES_1373_BYPASS_P1;
        else
                ensoniq->ctrl &= ~ES_1373_BYPASS_P1;
#endif
        outl(ensoniq->ctrl, ES_REG(ensoniq, CONTROL));
        outl(ES_MEM_PAGEO(ES_PAGE_DAC), ES_REG(ensoniq, MEM_PAGE));
        outl(runtime->dma_addr, ES_REG(ensoniq, DAC1_FRAME));
        outl((ensoniq->p1_dma_size >> 2) - 1, ES_REG(ensoniq, DAC1_SIZE));
        ensoniq->sctrl &= ~(ES_P1_LOOP_SEL | ES_P1_PAUSE | ES_P1_SCT_RLD | ES_P1_MODEM);
        ensoniq->sctrl |= ES_P1_INT_EN | ES_P1_MODEO(mode);
        outl(ensoniq->sctrl, ES_REG(ensoniq, SERIAL));
        outl((ensoniq->p1_period_size >> snd_ensoniq_sample_shift[mode]) - 1,
             ES_REG(ensoniq, DAC1_COUNT));
#ifdef CHIP1370
        ensoniq->ctrl &= ~ES_1370_WTSRSELM;
        switch (runtime->rate) {
        case 5512: ensoniq->ctrl |= ES_1370_WTSRSEL(0); break;
        case 11025: ensoniq->ctrl |= ES_1370_WTSRSEL(1); break;
        case 22050: ensoniq->ctrl |= ES_1370_WTSRSEL(2); break;
        case 44100: ensoniq->ctrl |= ES_1370_WTSRSEL(3); break;
        default: snd_BUG();
        }
#endif
        outl(ensoniq->ctrl, ES_REG(ensoniq, CONTROL));
        spin_unlock_irq(&ensoniq->reg_lock);
#ifndef CHIP1370
        snd_es1371_dac1_rate(ensoniq, runtime->rate);
#endif
        return 0;
}

static int snd_ensoniq_playback2_prepare(struct snd_pcm_substream *substream)
{
        struct ensoniq *ensoniq = snd_pcm_substream_chip(substream);
        struct snd_pcm_runtime *runtime = substream->runtime;
        unsigned int mode = 0;

        ensoniq->p2_dma_size = snd_pcm_lib_buffer_bytes(substream);
        ensoniq->p2_period_size = snd_pcm_lib_period_bytes(substream);
        if (snd_pcm_format_width(runtime->format) == 16)
                mode |= 0x02;
        if (runtime->channels > 1)
                mode |= 0x01;
        spin_lock_irq(&ensoniq->reg_lock);
        ensoniq->ctrl &= ~ES_DAC2_EN;
        outl(ensoniq->ctrl, ES_REG(ensoniq, CONTROL));
        outl(ES_MEM_PAGEO(ES_PAGE_DAC), ES_REG(ensoniq, MEM_PAGE));
        outl(runtime->dma_addr, ES_REG(ensoniq, DAC2_FRAME));
        outl((ensoniq->p2_dma_size >> 2) - 1, ES_REG(ensoniq, DAC2_SIZE));
        ensoniq->sctrl &= ~(ES_P2_LOOP_SEL | ES_P2_PAUSE | ES_P2_DAC_SEN |
                            ES_P2_END_INCM | ES_P2_ST_INCM | ES_P2_MODEM);
        ensoniq->sctrl |= ES_P2_INT_EN | ES_P2_MODEO(mode) |
                          ES_P2_END_INCO(mode & 2 ? 2 : 1) | ES_P2_ST_INCO(0);
        outl(ensoniq->sctrl, ES_REG(ensoniq, SERIAL));
        outl((ensoniq->p2_period_size >> snd_ensoniq_sample_shift[mode]) - 1,
             ES_REG(ensoniq, DAC2_COUNT));
#ifdef CHIP1370
        if (!(ensoniq->u.es1370.pclkdiv_lock & ES_MODE_CAPTURE)) {
                ensoniq->ctrl &= ~ES_1370_PCLKDIVM;
                ensoniq->ctrl |= ES_1370_PCLKDIVO(ES_1370_SRTODIV(runtime->rate));
                ensoniq->u.es1370.pclkdiv_lock |= ES_MODE_PLAY2;
        }
#endif
        outl(ensoniq->ctrl, ES_REG(ensoniq, CONTROL));
        spin_unlock_irq(&ensoniq->reg_lock);
#ifndef CHIP1370
        snd_es1371_dac2_rate(ensoniq, runtime->rate);
#endif
        return 0;
}

static int snd_ensoniq_capture_prepare(struct snd_pcm_substream *substream)
{
        struct ensoniq *ensoniq = snd_pcm_substream_chip(substream);
        struct snd_pcm_runtime *runtime = substream->runtime;
        unsigned int mode = 0;

        ensoniq->c_dma_size = snd_pcm_lib_buffer_bytes(substream);
        ensoniq->c_period_size = snd_pcm_lib_period_bytes(substream);
        if (snd_pcm_format_width(runtime->format) == 16)
                mode |= 0x02;
        if (runtime->channels > 1)
                mode |= 0x01;
        spin_lock_irq(&ensoniq->reg_lock);
        ensoniq->ctrl &= ~ES_ADC_EN;
        outl(ensoniq->ctrl, ES_REG(ensoniq, CONTROL));
        outl(ES_MEM_PAGEO(ES_PAGE_ADC), ES_REG(ensoniq, MEM_PAGE));
        outl(runtime->dma_addr, ES_REG(ensoniq, ADC_FRAME));
        outl((ensoniq->c_dma_size >> 2) - 1, ES_REG(ensoniq, ADC_SIZE));
        ensoniq->sctrl &= ~(ES_R1_LOOP_SEL | ES_R1_MODEM);
        ensoniq->sctrl |= ES_R1_INT_EN | ES_R1_MODEO(mode);
        outl(ensoniq->sctrl, ES_REG(ensoniq, SERIAL));
        outl((ensoniq->c_period_size >> snd_ensoniq_sample_shift[mode]) - 1,
             ES_REG(ensoniq, ADC_COUNT));
#ifdef CHIP1370
        if (!(ensoniq->u.es1370.pclkdiv_lock & ES_MODE_PLAY2)) {
                ensoniq->ctrl &= ~ES_1370_PCLKDIVM;
                ensoniq->ctrl |= ES_1370_PCLKDIVO(ES_1370_SRTODIV(runtime->rate));
                ensoniq->u.es1370.pclkdiv_lock |= ES_MODE_CAPTURE;

        }
#endif
        outl(ensoniq->ctrl, ES_REG(ensoniq, CONTROL));
        spin_unlock_irq(&ensoniq->reg_lock);
#ifndef CHIP1370
        snd_es1371_adc_rate(ensoniq, runtime->rate);
#endif
        return 0;
}

static snd_pcm_uframes_t snd_ensoniq_playback1_pointer(struct snd_pcm_substream *substream)
{
        struct ensoniq *ensoniq = snd_pcm_substream_chip(substream);
        size_t ptr;

        spin_lock(&ensoniq->reg_lock);
        if (inl(ES_REG(ensoniq, CONTROL)) & ES_DAC1_EN) {
                outl(ES_MEM_PAGEO(ES_PAGE_DAC), ES_REG(ensoniq, MEM_PAGE));
                ptr = ES_REG_FCURR_COUNTI(inl(ES_REG(ensoniq, DAC1_SIZE)));
                ptr = bytes_to_frames(substream->runtime, ptr);
        } else {
                ptr = 0;
        }
        spin_unlock(&ensoniq->reg_lock);
        return ptr;
}

static snd_pcm_uframes_t snd_ensoniq_playback2_pointer(struct snd_pcm_substream *substream)
{
        struct ensoniq *ensoniq = snd_pcm_substream_chip(substream);
        size_t ptr;

        spin_lock(&ensoniq->reg_lock);
        if (inl(ES_REG(ensoniq, CONTROL)) & ES_DAC2_EN) {
                outl(ES_MEM_PAGEO(ES_PAGE_DAC), ES_REG(ensoniq, MEM_PAGE));
                ptr = ES_REG_FCURR_COUNTI(inl(ES_REG(ensoniq, DAC2_SIZE)));
                ptr = bytes_to_frames(substream->runtime, ptr);
        } else {
                ptr = 0;
        }
        spin_unlock(&ensoniq->reg_lock);
        return ptr;
}

static snd_pcm_uframes_t snd_ensoniq_capture_pointer(struct snd_pcm_substream *substream)
{
        struct ensoniq *ensoniq = snd_pcm_substream_chip(substream);
        size_t ptr;

        spin_lock(&ensoniq->reg_lock);
        if (inl(ES_REG(ensoniq, CONTROL)) & ES_ADC_EN) {
                outl(ES_MEM_PAGEO(ES_PAGE_ADC), ES_REG(ensoniq, MEM_PAGE));
                ptr = ES_REG_FCURR_COUNTI(inl(ES_REG(ensoniq, ADC_SIZE)));
                ptr = bytes_to_frames(substream->runtime, ptr);
        } else {
                ptr = 0;
        }
        spin_unlock(&ensoniq->reg_lock);
        return ptr;
}

static struct snd_pcm_hardware snd_ensoniq_playback1 =
{
        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
                                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
                                 SNDRV_PCM_INFO_MMAP_VALID |
                                 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_SYNC_START),
        .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
        .rates =
#ifndef CHIP1370
                                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
#else
                                (SNDRV_PCM_RATE_KNOT |  /* 5512Hz rate */
                                 SNDRV_PCM_RATE_11025 | SNDRV_PCM_RATE_22050 | 
                                 SNDRV_PCM_RATE_44100),
#endif
        .rate_min =             4000,
        .rate_max =             48000,
        .channels_min =         1,
        .channels_max =         2,
        .buffer_bytes_max =     (128*1024),
        .period_bytes_min =     64,
        .period_bytes_max =     (128*1024),
        .periods_min =          1,
        .periods_max =          1024,
        .fifo_size =            0,
};

static struct snd_pcm_hardware snd_ensoniq_playback2 =
{
        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
                                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
                                 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_PAUSE | 
                                 SNDRV_PCM_INFO_SYNC_START),
        .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
        .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
        .rate_min =             4000,
        .rate_max =             48000,
        .channels_min =         1,
        .channels_max =         2,
        .buffer_bytes_max =     (128*1024),
        .period_bytes_min =     64,
        .period_bytes_max =     (128*1024),
        .periods_min =          1,
        .periods_max =          1024,
        .fifo_size =            0,
};

static struct snd_pcm_hardware snd_ensoniq_capture =
{
        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
                                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
                                 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START),
        .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
        .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
        .rate_min =             4000,
        .rate_max =             48000,
        .channels_min =         1,
        .channels_max =         2,
        .buffer_bytes_max =     (128*1024),
        .period_bytes_min =     64,
        .period_bytes_max =     (128*1024),
        .periods_min =          1,
        .periods_max =          1024,
        .fifo_size =            0,
};

static int snd_ensoniq_playback1_open(struct snd_pcm_substream *substream)
{
        struct ensoniq *ensoniq = snd_pcm_substream_chip(substream);
        struct snd_pcm_runtime *runtime = substream->runtime;

        ensoniq->mode |= ES_MODE_PLAY1;
        ensoniq->playback1_substream = substream;
        runtime->hw = snd_ensoniq_playback1;
        snd_pcm_set_sync(substream);
        spin_lock_irq(&ensoniq->reg_lock);
        if (ensoniq->spdif && ensoniq->playback2_substream == NULL)
                ensoniq->spdif_stream = ensoniq->spdif_default;
        spin_unlock_irq(&ensoniq->reg_lock);
#ifdef CHIP1370
        snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
                                   &snd_es1370_hw_constraints_rates);
#else
        snd_pcm_hw_constraint_ratdens(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
                                      &snd_es1371_hw_constraints_dac_clock);
#endif
        return 0;
}

static int snd_ensoniq_playback2_open(struct snd_pcm_substream *substream)
{
        struct ensoniq *ensoniq = snd_pcm_substream_chip(substream);
        struct snd_pcm_runtime *runtime = substream->runtime;

        ensoniq->mode |= ES_MODE_PLAY2;
        ensoniq->playback2_substream = substream;
        runtime->hw = snd_ensoniq_playback2;
        snd_pcm_set_sync(substream);
        spin_lock_irq(&ensoniq->reg_lock);
        if (ensoniq->spdif && ensoniq->playback1_substream == NULL)
                ensoniq->spdif_stream = ensoniq->spdif_default;
        spin_unlock_irq(&ensoniq->reg_lock);
#ifdef CHIP1370
        snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
                                      &snd_es1370_hw_constraints_clock);
#else
        snd_pcm_hw_constraint_ratdens(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
                                      &snd_es1371_hw_constraints_dac_clock);
#endif
        return 0;
}

static int snd_ensoniq_capture_open(struct snd_pcm_substream *substream)
{
        struct ensoniq *ensoniq = snd_pcm_substream_chip(substream);
        struct snd_pcm_runtime *runtime = substream->runtime;

        ensoniq->mode |= ES_MODE_CAPTURE;
        ensoniq->capture_substream = substream;
        runtime->hw = snd_ensoniq_capture;
        snd_pcm_set_sync(substream);
#ifdef CHIP1370
        snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
                                      &snd_es1370_hw_constraints_clock);
#else
        snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
                                      &snd_es1371_hw_constraints_adc_clock);
#endif
        return 0;
}

static int snd_ensoniq_playback1_close(struct snd_pcm_substream *substream)
{
        struct ensoniq *ensoniq = snd_pcm_substream_chip(substream);

        ensoniq->playback1_substream = NULL;
        ensoniq->mode &= ~ES_MODE_PLAY1;
        return 0;
}

static int snd_ensoniq_playback2_close(struct snd_pcm_substream *substream)
{
        struct ensoniq *ensoniq = snd_pcm_substream_chip(substream);

        ensoniq->playback2_substream = NULL;
        spin_lock_irq(&ensoniq->reg_lock);
#ifdef CHIP1370
        ensoniq->u.es1370.pclkdiv_lock &= ~ES_MODE_PLAY2;
#endif
        ensoniq->mode &= ~ES_MODE_PLAY2;
        spin_unlock_irq(&ensoniq->reg_lock);
        return 0;
}

static int snd_ensoniq_capture_close(struct snd_pcm_substream *substream)
{
        struct ensoniq *ensoniq = snd_pcm_substream_chip(substream);

        ensoniq->capture_substream = NULL;
        spin_lock_irq(&ensoniq->reg_lock);
#ifdef CHIP1370
        ensoniq->u.es1370.pclkdiv_lock &= ~ES_MODE_CAPTURE;
#endif
        ensoniq->mode &= ~ES_MODE_CAPTURE;
        spin_unlock_irq(&ensoniq->reg_lock);
        return 0;
}

static struct snd_pcm_ops snd_ensoniq_playback1_ops = {
        .open =         snd_ensoniq_playback1_open,
        .close =        snd_ensoniq_playback1_close,
        .ioctl =        snd_pcm_lib_ioctl,
        .hw_params =    snd_ensoniq_hw_params,
        .hw_free =      snd_ensoniq_hw_free,
        .prepare =      snd_ensoniq_playback1_prepare,
        .trigger =      snd_ensoniq_trigger,
        .pointer =      snd_ensoniq_playback1_pointer,
};

static struct snd_pcm_ops snd_ensoniq_playback2_ops = {
        .open =         snd_ensoniq_playback2_open,
        .close =        snd_ensoniq_playback2_close,
        .ioctl =        snd_pcm_lib_ioctl,
        .hw_params =    snd_ensoniq_hw_params,
        .hw_free =      snd_ensoniq_hw_free,
        .prepare =      snd_ensoniq_playback2_prepare,
        .trigger =      snd_ensoniq_trigger,
        .pointer =      snd_ensoniq_playback2_pointer,
};

static struct snd_pcm_ops snd_ensoniq_capture_ops = {
        .open =         snd_ensoniq_capture_open,
        .close =        snd_ensoniq_capture_close,
        .ioctl =        snd_pcm_lib_ioctl,
        .hw_params =    snd_ensoniq_hw_params,
        .hw_free =      snd_ensoniq_hw_free,
        .prepare =      snd_ensoniq_capture_prepare,
        .trigger =      snd_ensoniq_trigger,
        .pointer =      snd_ensoniq_capture_pointer,
};

static const struct snd_pcm_chmap_elem surround_map[] = {
        { .channels = 1,
          .map = { SNDRV_CHMAP_MONO } },
        { .channels = 2,
          .map = { SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
        { }
};

static int snd_ensoniq_pcm(struct ensoniq *ensoniq, int device)
{
        struct snd_pcm *pcm;
        int err;

        err = snd_pcm_new(ensoniq->card, CHIP_NAME "/1", device, 1, 1, &pcm);
        if (err < 0)
                return err;

#ifdef CHIP1370
        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ensoniq_playback2_ops);
#else
        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ensoniq_playback1_ops);
#endif
        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ensoniq_capture_ops);

        pcm->private_data = ensoniq;
        pcm->info_flags = 0;
        strcpy(pcm->name, CHIP_NAME " DAC2/ADC");
        ensoniq->pcm1 = pcm;

        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
                                              snd_dma_pci_data(ensoniq->pci), 64*1024, 128*1024);

#ifdef CHIP1370
        err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
                                     surround_map, 2, 0, NULL);
#else
        err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
                                     snd_pcm_std_chmaps, 2, 0, NULL);
#endif
        return err;
}

static int snd_ensoniq_pcm2(struct ensoniq *ensoniq, int device)
{
        struct snd_pcm *pcm;
        int err;

        err = snd_pcm_new(ensoniq->card, CHIP_NAME "/2", device, 1, 0, &pcm);
        if (err < 0)
                return err;

#ifdef CHIP1370
        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ensoniq_playback1_ops);
#else
        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ensoniq_playback2_ops);
#endif
        pcm->private_data = ensoniq;
        pcm->info_flags = 0;
        strcpy(pcm->name, CHIP_NAME " DAC1");
        ensoniq->pcm2 = pcm;

        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
                                              snd_dma_pci_data(ensoniq->pci), 64*1024, 128*1024);

#ifdef CHIP1370
        err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
                                     snd_pcm_std_chmaps, 2, 0, NULL);
#else
        err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
                                     surround_map, 2, 0, NULL);
#endif
        return err;
}

/*
 *  Mixer section
 */

/*
 * ENS1371 mixer (including SPDIF interface)
 */
#ifdef CHIP1371
static int snd_ens1373_spdif_info(struct snd_kcontrol *kcontrol,
                                  struct snd_ctl_elem_info *uinfo)
{
        uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
        uinfo->count = 1;
        return 0;
}

static int snd_ens1373_spdif_default_get(struct snd_kcontrol *kcontrol,
                                         struct snd_ctl_elem_value *ucontrol)
{
        struct ensoniq *ensoniq = snd_kcontrol_chip(kcontrol);
        spin_lock_irq(&ensoniq->reg_lock);
        ucontrol->value.iec958.status[0] = (ensoniq->spdif_default >> 0) & 0xff;
        ucontrol->value.iec958.status[1] = (ensoniq->spdif_default >> 8) & 0xff;
        ucontrol->value.iec958.status[2] = (ensoniq->spdif_default >> 16) & 0xff;
        ucontrol->value.iec958.status[3] = (ensoniq->spdif_default >> 24) & 0xff;
        spin_unlock_irq(&ensoniq->reg_lock);
        return 0;
}

static int snd_ens1373_spdif_default_put(struct snd_kcontrol *kcontrol,
                                         struct snd_ctl_elem_value *ucontrol)
{
        struct ensoniq *ensoniq = snd_kcontrol_chip(kcontrol);
        unsigned int val;
        int change;

        val = ((u32)ucontrol->value.iec958.status[0] << 0) |
              ((u32)ucontrol->value.iec958.status[1] << 8) |
              ((u32)ucontrol->value.iec958.status[2] << 16) |
              ((u32)ucontrol->value.iec958.status[3] << 24);
        spin_lock_irq(&ensoniq->reg_lock);
        change = ensoniq->spdif_default != val;
        ensoniq->spdif_default = val;
        if (change && ensoniq->playback1_substream == NULL &&
            ensoniq->playback2_substream == NULL)
                outl(val, ES_REG(ensoniq, CHANNEL_STATUS));
        spin_unlock_irq(&ensoniq->reg_lock);
        return change;
}

static int snd_ens1373_spdif_mask_get(struct snd_kcontrol *kcontrol,
                                      struct snd_ctl_elem_value *ucontrol)
{
        ucontrol->value.iec958.status[0] = 0xff;
        ucontrol->value.iec958.status[1] = 0xff;
        ucontrol->value.iec958.status[2] = 0xff;
        ucontrol->value.iec958.status[3] = 0xff;
        return 0;
}

static int snd_ens1373_spdif_stream_get(struct snd_kcontrol *kcontrol,
                                        struct snd_ctl_elem_value *ucontrol)
{
        struct ensoniq *ensoniq = snd_kcontrol_chip(kcontrol);
        spin_lock_irq(&ensoniq->reg_lock);
        ucontrol->value.iec958.status[0] = (ensoniq->spdif_stream >> 0) & 0xff;
        ucontrol->value.iec958.status[1] = (ensoniq->spdif_stream >> 8) & 0xff;
        ucontrol->value.iec958.status[2] = (ensoniq->spdif_stream >> 16) & 0xff;
        ucontrol->value.iec958.status[3] = (ensoniq->spdif_stream >> 24) & 0xff;
        spin_unlock_irq(&ensoniq->reg_lock);
        return 0;
}

static int snd_ens1373_spdif_stream_put(struct snd_kcontrol *kcontrol,
                                        struct snd_ctl_elem_value *ucontrol)
{
        struct ensoniq *ensoniq = snd_kcontrol_chip(kcontrol);
        unsigned int val;
        int change;

        val = ((u32)ucontrol->value.iec958.status[0] << 0) |
              ((u32)ucontrol->value.iec958.status[1] << 8) |
              ((u32)ucontrol->value.iec958.status[2] << 16) |
              ((u32)ucontrol->value.iec958.status[3] << 24);
        spin_lock_irq(&ensoniq->reg_lock);
        change = ensoniq->spdif_stream != val;
        ensoniq->spdif_stream = val;
        if (change && (ensoniq->playback1_substream != NULL ||
                       ensoniq->playback2_substream != NULL))
                outl(val, ES_REG(ensoniq, CHANNEL_STATUS));
        spin_unlock_irq(&ensoniq->reg_lock);
        return change;
}

#define ES1371_SPDIF(xname) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .info = snd_es1371_spdif_info, \
  .get = snd_es1371_spdif_get, .put = snd_es1371_spdif_put }

#define snd_es1371_spdif_info           snd_ctl_boolean_mono_info

static int snd_es1371_spdif_get(struct snd_kcontrol *kcontrol,
                                struct snd_ctl_elem_value *ucontrol)
{
        struct ensoniq *ensoniq = snd_kcontrol_chip(kcontrol);
        
        spin_lock_irq(&ensoniq->reg_lock);
        ucontrol->value.integer.value[0] = ensoniq->ctrl & ES_1373_SPDIF_THRU ? 1 : 0;
        spin_unlock_irq(&ensoniq->reg_lock);
        return 0;
}

static int snd_es1371_spdif_put(struct snd_kcontrol *kcontrol,
                                struct snd_ctl_elem_value *ucontrol)
{
        struct ensoniq *ensoniq = snd_kcontrol_chip(kcontrol);
        unsigned int nval1, nval2;
        int change;
        
        nval1 = ucontrol->value.integer.value[0] ? ES_1373_SPDIF_THRU : 0;
        nval2 = ucontrol->value.integer.value[0] ? ES_1373_SPDIF_EN : 0;
        spin_lock_irq(&ensoniq->reg_lock);
        change = (ensoniq->ctrl & ES_1373_SPDIF_THRU) != nval1;
        ensoniq->ctrl &= ~ES_1373_SPDIF_THRU;
        ensoniq->ctrl |= nval1;
        ensoniq->cssr &= ~ES_1373_SPDIF_EN;
        ensoniq->cssr |= nval2;
        outl(ensoniq->ctrl, ES_REG(ensoniq, CONTROL));
        outl(ensoniq->cssr, ES_REG(ensoniq, STATUS));
        spin_unlock_irq(&ensoniq->reg_lock);
        return change;
}


/* spdif controls */
static struct snd_kcontrol_new snd_es1371_mixer_spdif[] = {
        ES1371_SPDIF(SNDRV_CTL_NAME_IEC958("",PLAYBACK,SWITCH)),
        {
                .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
                .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
                .info =         snd_ens1373_spdif_info,
                .get =          snd_ens1373_spdif_default_get,
                .put =          snd_ens1373_spdif_default_put,
        },
        {
                .access =       SNDRV_CTL_ELEM_ACCESS_READ,
                .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
                .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
                .info =         snd_ens1373_spdif_info,
                .get =          snd_ens1373_spdif_mask_get
        },
        {
                .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
                .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM),
                .info =         snd_ens1373_spdif_info,
                .get =          snd_ens1373_spdif_stream_get,
                .put =          snd_ens1373_spdif_stream_put
        },
};


#define snd_es1373_rear_info            snd_ctl_boolean_mono_info

static int snd_es1373_rear_get(struct snd_kcontrol *kcontrol,
                               struct snd_ctl_elem_value *ucontrol)
{
        struct ensoniq *ensoniq = snd_kcontrol_chip(kcontrol);
        int val = 0;
        
        spin_lock_irq(&ensoniq->reg_lock);
        if ((ensoniq->cssr & (ES_1373_REAR_BIT27|ES_1373_REAR_BIT26|
                              ES_1373_REAR_BIT24)) == ES_1373_REAR_BIT26)
                val = 1;
        ucontrol->value.integer.value[0] = val;
        spin_unlock_irq(&ensoniq->reg_lock);
        return 0;
}

static int snd_es1373_rear_put(struct snd_kcontrol *kcontrol,
                               struct snd_ctl_elem_value *ucontrol)
{
        struct ensoniq *ensoniq = snd_kcontrol_chip(kcontrol);
        unsigned int nval1;
        int change;
        
        nval1 = ucontrol->value.integer.value[0] ?
                ES_1373_REAR_BIT26 : (ES_1373_REAR_BIT27|ES_1373_REAR_BIT24);
        spin_lock_irq(&ensoniq->reg_lock);
        change = (ensoniq->cssr & (ES_1373_REAR_BIT27|
                                   ES_1373_REAR_BIT26|ES_1373_REAR_BIT24)) != nval1;
        ensoniq->cssr &= ~(ES_1373_REAR_BIT27|ES_1373_REAR_BIT26|ES_1373_REAR_BIT24);
        ensoniq->cssr |= nval1;
        outl(ensoniq->cssr, ES_REG(ensoniq, STATUS));
        spin_unlock_irq(&ensoniq->reg_lock);
        return change;
}

static struct snd_kcontrol_new snd_ens1373_rear =
{
        .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
        .name =         "AC97 2ch->4ch Copy Switch",
        .info =         snd_es1373_rear_info,
        .get =          snd_es1373_rear_get,
        .put =          snd_es1373_rear_put,
};

#define snd_es1373_line_info            snd_ctl_boolean_mono_info

static int snd_es1373_line_get(struct snd_kcontrol *kcontrol,
                               struct snd_ctl_elem_value *ucontrol)
{
        struct ensoniq *ensoniq = snd_kcontrol_chip(kcontrol);
        int val = 0;
        
        spin_lock_irq(&ensoniq->reg_lock);
        if ((ensoniq->ctrl & ES_1371_GPIO_OUTM) >= 4)
                val = 1;
        ucontrol->value.integer.value[0] = val;
        spin_unlock_irq(&ensoniq->reg_lock);
        return 0;
}

static int snd_es1373_line_put(struct snd_kcontrol *kcontrol,
                               struct snd_ctl_elem_value *ucontrol)
{
        struct ensoniq *ensoniq = snd_kcontrol_chip(kcontrol);
        int changed;
        unsigned int ctrl;
        
        spin_lock_irq(&ensoniq->reg_lock);
        ctrl = ensoniq->ctrl;
        if (ucontrol->value.integer.value[0])
                ensoniq->ctrl |= ES_1371_GPIO_OUT(4);   /* switch line-in -> rear out */
        else
                ensoniq->ctrl &= ~ES_1371_GPIO_OUT(4);
        changed = (ctrl != ensoniq->ctrl);
        if (changed)
                outl(ensoniq->ctrl, ES_REG(ensoniq, CONTROL));
        spin_unlock_irq(&ensoniq->reg_lock);
        return changed;
}

static struct snd_kcontrol_new snd_ens1373_line =
{
        .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
        .name =         "Line In->Rear Out Switch",
        .info =         snd_es1373_line_info,
        .get =          snd_es1373_line_get,
        .put =          snd_es1373_line_put,
};

static void snd_ensoniq_mixer_free_ac97(struct snd_ac97 *ac97)
{
        struct ensoniq *ensoniq = ac97->private_data;
        ensoniq->u.es1371.ac97 = NULL;
}

struct es1371_quirk {
        unsigned short vid;             /* vendor ID */
        unsigned short did;             /* device ID */
        unsigned char rev;              /* revision */
};

static int es1371_quirk_lookup(struct ensoniq *ensoniq,
                                struct es1371_quirk *list)
{
        while (list->vid != (unsigned short)PCI_ANY_ID) {
                if (ensoniq->pci->vendor == list->vid &&
                    ensoniq->pci->device == list->did &&
                    ensoniq->rev == list->rev)
                        return 1;
                list++;
        }
        return 0;
}

static struct es1371_quirk es1371_spdif_present[] = {
        { .vid = PCI_VENDOR_ID_ENSONIQ, .did = PCI_DEVICE_ID_ENSONIQ_CT5880, .rev = CT5880REV_CT5880_C },
        { .vid = PCI_VENDOR_ID_ENSONIQ, .did = PCI_DEVICE_ID_ENSONIQ_CT5880, .rev = CT5880REV_CT5880_D },
        { .vid = PCI_VENDOR_ID_ENSONIQ, .did = PCI_DEVICE_ID_ENSONIQ_CT5880, .rev = CT5880REV_CT5880_E },
        { .vid = PCI_VENDOR_ID_ENSONIQ, .did = PCI_DEVICE_ID_ENSONIQ_ES1371, .rev = ES1371REV_CT5880_A },
        { .vid = PCI_VENDOR_ID_ENSONIQ, .did = PCI_DEVICE_ID_ENSONIQ_ES1371, .rev = ES1371REV_ES1373_8 },
        { .vid = PCI_ANY_ID, .did = PCI_ANY_ID }
};

static struct snd_pci_quirk ens1373_line_quirk[] = {
        SND_PCI_QUIRK_ID(0x1274, 0x2000), /* GA-7DXR */
        SND_PCI_QUIRK_ID(0x1458, 0xa000), /* GA-8IEXP */
        { } /* end */
};

static int snd_ensoniq_1371_mixer(struct ensoniq *ensoniq,
                                  int has_spdif, int has_line)
{
        struct snd_card *card = ensoniq->card;
        struct snd_ac97_bus *pbus;
        struct snd_ac97_template ac97;
        int err;
        static struct snd_ac97_bus_ops ops = {
                .write = snd_es1371_codec_write,
                .read = snd_es1371_codec_read,
                .wait = snd_es1371_codec_wait,
        };

        if ((err = snd_ac97_bus(card, 0, &ops, NULL, &pbus)) < 0)
                return err;

        memset(&ac97, 0, sizeof(ac97));
        ac97.private_data = ensoniq;
        ac97.private_free = snd_ensoniq_mixer_free_ac97;
        ac97.pci = ensoniq->pci;
        ac97.scaps = AC97_SCAP_AUDIO;
        if ((err = snd_ac97_mixer(pbus, &ac97, &ensoniq->u.es1371.ac97)) < 0)
                return err;
        if (has_spdif > 0 ||
            (!has_spdif && es1371_quirk_lookup(ensoniq, es1371_spdif_present))) {
                struct snd_kcontrol *kctl;
                int i, is_spdif = 0;

                ensoniq->spdif_default = ensoniq->spdif_stream =
                        SNDRV_PCM_DEFAULT_CON_SPDIF;
                outl(ensoniq->spdif_default, ES_REG(ensoniq, CHANNEL_STATUS));

                if (ensoniq->u.es1371.ac97->ext_id & AC97_EI_SPDIF)
                        is_spdif++;

                for (i = 0; i < ARRAY_SIZE(snd_es1371_mixer_spdif); i++) {
                        kctl = snd_ctl_new1(&snd_es1371_mixer_spdif[i], ensoniq);
                        if (!kctl)
                                return -ENOMEM;
                        kctl->id.index = is_spdif;
                        err = snd_ctl_add(card, kctl);
                        if (err < 0)
                                return err;
                }
        }
        if (ensoniq->u.es1371.ac97->ext_id & AC97_EI_SDAC) {
                /* mirror rear to front speakers */
                ensoniq->cssr &= ~(ES_1373_REAR_BIT27|ES_1373_REAR_BIT24);
                ensoniq->cssr |= ES_1373_REAR_BIT26;
                err = snd_ctl_add(card, snd_ctl_new1(&snd_ens1373_rear, ensoniq));
                if (err < 0)
                        return err;
        }
        if (has_line > 0 ||
            snd_pci_quirk_lookup(ensoniq->pci, ens1373_line_quirk)) {
                 err = snd_ctl_add(card, snd_ctl_new1(&snd_ens1373_line,
                                                      ensoniq));
                 if (err < 0)
                         return err;
        }

        return 0;
}

#endif /* CHIP1371 */

/* generic control callbacks for ens1370 */
#ifdef CHIP1370
#define ENSONIQ_CONTROL(xname, mask) \
{ .iface = SNDRV_CTL_ELEM_IFACE_CARD, .name = xname, .info = snd_ensoniq_control_info, \
  .get = snd_ensoniq_control_get, .put = snd_ensoniq_control_put, \
  .private_value = mask }

#define snd_ensoniq_control_info        snd_ctl_boolean_mono_info

static int snd_ensoniq_control_get(struct snd_kcontrol *kcontrol,
                                   struct snd_ctl_elem_value *ucontrol)
{
        struct ensoniq *ensoniq = snd_kcontrol_chip(kcontrol);
        int mask = kcontrol->private_value;
        
        spin_lock_irq(&ensoniq->reg_lock);
        ucontrol->value.integer.value[0] = ensoniq->ctrl & mask ? 1 : 0;
        spin_unlock_irq(&ensoniq->reg_lock);
        return 0;
}

static int snd_ensoniq_control_put(struct snd_kcontrol *kcontrol,
                                   struct snd_ctl_elem_value *ucontrol)
{
        struct ensoniq *ensoniq = snd_kcontrol_chip(kcontrol);
        int mask = kcontrol->private_value;
        unsigned int nval;
        int change;
        
        nval = ucontrol->value.integer.value[0] ? mask : 0;
        spin_lock_irq(&ensoniq->reg_lock);
        change = (ensoniq->ctrl & mask) != nval;
        ensoniq->ctrl &= ~mask;
        ensoniq->ctrl |= nval;
        outl(ensoniq->ctrl, ES_REG(ensoniq, CONTROL));
        spin_unlock_irq(&ensoniq->reg_lock);
        return change;
}

/*
 * ENS1370 mixer
 */

static struct snd_kcontrol_new snd_es1370_controls[2] = {
ENSONIQ_CONTROL("PCM 0 Output also on Line-In Jack", ES_1370_XCTL0),
ENSONIQ_CONTROL("Mic +5V bias", ES_1370_XCTL1)
};

#define ES1370_CONTROLS ARRAY_SIZE(snd_es1370_controls)

static void snd_ensoniq_mixer_free_ak4531(struct snd_ak4531 *ak4531)
{
        struct ensoniq *ensoniq = ak4531->private_data;
        ensoniq->u.es1370.ak4531 = NULL;
}

static int snd_ensoniq_1370_mixer(struct ensoniq *ensoniq)
{
        struct snd_card *card = ensoniq->card;
        struct snd_ak4531 ak4531;
        unsigned int idx;
        int err;

        /* try reset AK4531 */
        outw(ES_1370_CODEC_WRITE(AK4531_RESET, 0x02), ES_REG(ensoniq, 1370_CODEC));
        inw(ES_REG(ensoniq, 1370_CODEC));
        udelay(100);
        outw(ES_1370_CODEC_WRITE(AK4531_RESET, 0x03), ES_REG(ensoniq, 1370_CODEC));
        inw(ES_REG(ensoniq, 1370_CODEC));
        udelay(100);

        memset(&ak4531, 0, sizeof(ak4531));
        ak4531.write = snd_es1370_codec_write;
        ak4531.private_data = ensoniq;
        ak4531.private_free = snd_ensoniq_mixer_free_ak4531;
        if ((err = snd_ak4531_mixer(card, &ak4531, &ensoniq->u.es1370.ak4531)) < 0)
                return err;
        for (idx = 0; idx < ES1370_CONTROLS; idx++) {
                err = snd_ctl_add(card, snd_ctl_new1(&snd_es1370_controls[idx], ensoniq));
                if (err < 0)
                        return err;
        }
        return 0;
}

#endif /* CHIP1370 */

#ifdef SUPPORT_JOYSTICK

#ifdef CHIP1371
static int snd_ensoniq_get_joystick_port(struct ensoniq *ensoniq, int dev)
{
        switch (joystick_port[dev]) {
        case 0: /* disabled */
        case 1: /* auto-detect */
        case 0x200:
        case 0x208:
        case 0x210:
        case 0x218:
                return joystick_port[dev];

        default:
                dev_err(ensoniq->card->dev,
                        "invalid joystick port %#x", joystick_port[dev]);
                return 0;
        }
}
#else
static int snd_ensoniq_get_joystick_port(struct ensoniq *ensoniq, int dev)
{
        return joystick[dev] ? 0x200 : 0;
}
#endif

static int snd_ensoniq_create_gameport(struct ensoniq *ensoniq, int dev)
{
        struct gameport *gp;
        int io_port;

        io_port = snd_ensoniq_get_joystick_port(ensoniq, dev);

        switch (io_port) {
        case 0:
                return -ENOSYS;

        case 1: /* auto_detect */
                for (io_port = 0x200; io_port <= 0x218; io_port += 8)
                        if (request_region(io_port, 8, "ens137x: gameport"))
                                break;
                if (io_port > 0x218) {
                        dev_warn(ensoniq->card->dev,
                                 "no gameport ports available\n");
                        return -EBUSY;
                }
                break;

        default:
                if (!request_region(io_port, 8, "ens137x: gameport")) {
                        dev_warn(ensoniq->card->dev,
                                 "gameport io port %#x in use\n",
                               io_port);
                        return -EBUSY;
                }
                break;
        }

        ensoniq->gameport = gp = gameport_allocate_port();
        if (!gp) {
                dev_err(ensoniq->card->dev,
                        "cannot allocate memory for gameport\n");
                release_region(io_port, 8);
                return -ENOMEM;
        }

        gameport_set_name(gp, "ES137x");
        gameport_set_phys(gp, "pci%s/gameport0", pci_name(ensoniq->pci));
        gameport_set_dev_parent(gp, &ensoniq->pci->dev);
        gp->io = io_port;

        ensoniq->ctrl |= ES_JYSTK_EN;
#ifdef CHIP1371
        ensoniq->ctrl &= ~ES_1371_JOY_ASELM;
        ensoniq->ctrl |= ES_1371_JOY_ASEL((io_port - 0x200) / 8);
#endif
        outl(ensoniq->ctrl, ES_REG(ensoniq, CONTROL));

        gameport_register_port(ensoniq->gameport);

        return 0;
}

static void snd_ensoniq_free_gameport(struct ensoniq *ensoniq)
{
        if (ensoniq->gameport) {
                int port = ensoniq->gameport->io;

                gameport_unregister_port(ensoniq->gameport);
                ensoniq->gameport = NULL;
                ensoniq->ctrl &= ~ES_JYSTK_EN;
                outl(ensoniq->ctrl, ES_REG(ensoniq, CONTROL));
                release_region(port, 8);
        }
}
#else
static inline int snd_ensoniq_create_gameport(struct ensoniq *ensoniq, long port) { return -ENOSYS; }
static inline void snd_ensoniq_free_gameport(struct ensoniq *ensoniq) { }
#endif /* SUPPORT_JOYSTICK */

/*

 */

static void snd_ensoniq_proc_read(struct snd_info_entry *entry, 
                                  struct snd_info_buffer *buffer)
{
        struct ensoniq *ensoniq = entry->private_data;

        snd_iprintf(buffer, "Ensoniq AudioPCI " CHIP_NAME "\n\n");
        snd_iprintf(buffer, "Joystick enable  : %s\n",
                    ensoniq->ctrl & ES_JYSTK_EN ? "on" : "off");
#ifdef CHIP1370
        snd_iprintf(buffer, "MIC +5V bias     : %s\n",
                    ensoniq->ctrl & ES_1370_XCTL1 ? "on" : "off");
        snd_iprintf(buffer, "Line In to AOUT  : %s\n",
                    ensoniq->ctrl & ES_1370_XCTL0 ? "on" : "off");
#else
        snd_iprintf(buffer, "Joystick port    : 0x%x\n",
                    (ES_1371_JOY_ASELI(ensoniq->ctrl) * 8) + 0x200);
#endif
}

static void snd_ensoniq_proc_init(struct ensoniq *ensoniq)
{
        struct snd_info_entry *entry;

        if (! snd_card_proc_new(ensoniq->card, "audiopci", &entry))
                snd_info_set_text_ops(entry, ensoniq, snd_ensoniq_proc_read);
}

/*

 */

static int snd_ensoniq_free(struct ensoniq *ensoniq)
{
        snd_ensoniq_free_gameport(ensoniq);
        if (ensoniq->irq < 0)
                goto __hw_end;
#ifdef CHIP1370
        outl(ES_1370_SERR_DISABLE, ES_REG(ensoniq, CONTROL));   /* switch everything off */
        outl(0, ES_REG(ensoniq, SERIAL));       /* clear serial interface */
#else
        outl(0, ES_REG(ensoniq, CONTROL));      /* switch everything off */
        outl(0, ES_REG(ensoniq, SERIAL));       /* clear serial interface */
#endif
        if (ensoniq->irq >= 0)
                synchronize_irq(ensoniq->irq);
        pci_set_power_state(ensoniq->pci, PCI_D3hot);
      __hw_end:
#ifdef CHIP1370
        if (ensoniq->dma_bug.area)
                snd_dma_free_pages(&ensoniq->dma_bug);
#endif
        if (ensoniq->irq >= 0)
                free_irq(ensoniq->irq, ensoniq);
        pci_release_regions(ensoniq->pci);
        pci_disable_device(ensoniq->pci);
        kfree(ensoniq);
        return 0;
}

static int snd_ensoniq_dev_free(struct snd_device *device)
{
        struct ensoniq *ensoniq = device->device_data;
        return snd_ensoniq_free(ensoniq);
}

#ifdef CHIP1371
static struct snd_pci_quirk es1371_amplifier_hack[] = {
        SND_PCI_QUIRK_ID(0x107b, 0x2150),       /* Gateway Solo 2150 */
        SND_PCI_QUIRK_ID(0x13bd, 0x100c),       /* EV1938 on Mebius PC-MJ100V */
        SND_PCI_QUIRK_ID(0x1102, 0x5938),       /* Targa Xtender300 */
        SND_PCI_QUIRK_ID(0x1102, 0x8938),       /* IPC Topnote G notebook */
        { } /* end */
};

static struct es1371_quirk es1371_ac97_reset_hack[] = {
        { .vid = PCI_VENDOR_ID_ENSONIQ, .did = PCI_DEVICE_ID_ENSONIQ_CT5880, .rev = CT5880REV_CT5880_C },
        { .vid = PCI_VENDOR_ID_ENSONIQ, .did = PCI_DEVICE_ID_ENSONIQ_CT5880, .rev = CT5880REV_CT5880_D },
        { .vid = PCI_VENDOR_ID_ENSONIQ, .did = PCI_DEVICE_ID_ENSONIQ_CT5880, .rev = CT5880REV_CT5880_E },
        { .vid = PCI_VENDOR_ID_ENSONIQ, .did = PCI_DEVICE_ID_ENSONIQ_ES1371, .rev = ES1371REV_CT5880_A },
        { .vid = PCI_VENDOR_ID_ENSONIQ, .did = PCI_DEVICE_ID_ENSONIQ_ES1371, .rev = ES1371REV_ES1373_8 },
        { .vid = PCI_ANY_ID, .did = PCI_ANY_ID }
};
#endif

static void snd_ensoniq_chip_init(struct ensoniq *ensoniq)
{
#ifdef CHIP1371
        int idx;
#endif
        /* this code was part of snd_ensoniq_create before intruduction
          * of suspend/resume
          */
#ifdef CHIP1370
        outl(ensoniq->ctrl, ES_REG(ensoniq, CONTROL));
        outl(ensoniq->sctrl, ES_REG(ensoniq, SERIAL));
        outl(ES_MEM_PAGEO(ES_PAGE_ADC), ES_REG(ensoniq, MEM_PAGE));
        outl(ensoniq->dma_bug.addr, ES_REG(ensoniq, PHANTOM_FRAME));
        outl(0, ES_REG(ensoniq, PHANTOM_COUNT));
#else
        outl(ensoniq->ctrl, ES_REG(ensoniq, CONTROL));
        outl(ensoniq->sctrl, ES_REG(ensoniq, SERIAL));
        outl(0, ES_REG(ensoniq, 1371_LEGACY));
        if (es1371_quirk_lookup(ensoniq, es1371_ac97_reset_hack)) {
            outl(ensoniq->cssr, ES_REG(ensoniq, STATUS));
            /* need to delay around 20ms(bleech) to give
               some CODECs enough time to wakeup */
            msleep(20);
        }
        /* AC'97 warm reset to start the bitclk */
        outl(ensoniq->ctrl | ES_1371_SYNC_RES, ES_REG(ensoniq, CONTROL));
        inl(ES_REG(ensoniq, CONTROL));
        udelay(20);
        outl(ensoniq->ctrl, ES_REG(ensoniq, CONTROL));
        /* Init the sample rate converter */
        snd_es1371_wait_src_ready(ensoniq);     
        outl(ES_1371_SRC_DISABLE, ES_REG(ensoniq, 1371_SMPRATE));

        for (idx = 0; idx < 0x80; idx++)
                snd_es1371_src_write(ensoniq, idx, 0);
        snd_es1371_src_write(ensoniq, ES_SMPREG_DAC1 + ES_SMPREG_TRUNC_N, 16 << 4);
        snd_es1371_src_write(ensoniq, ES_SMPREG_DAC1 + ES_SMPREG_INT_REGS, 16 << 10);
        snd_es1371_src_write(ensoniq, ES_SMPREG_DAC2 + ES_SMPREG_TRUNC_N, 16 << 4);
        snd_es1371_src_write(ensoniq, ES_SMPREG_DAC2 + ES_SMPREG_INT_REGS, 16 << 10);
        snd_es1371_src_write(ensoniq, ES_SMPREG_VOL_ADC, 1 << 12);
        snd_es1371_src_write(ensoniq, ES_SMPREG_VOL_ADC + 1, 1 << 12);
        snd_es1371_src_write(ensoniq, ES_SMPREG_VOL_DAC1, 1 << 12);
        snd_es1371_src_write(ensoniq, ES_SMPREG_VOL_DAC1 + 1, 1 << 12);
        snd_es1371_src_write(ensoniq, ES_SMPREG_VOL_DAC2, 1 << 12);
        snd_es1371_src_write(ensoniq, ES_SMPREG_VOL_DAC2 + 1, 1 << 12);
        snd_es1371_adc_rate(ensoniq, 22050);
        snd_es1371_dac1_rate(ensoniq, 22050);
        snd_es1371_dac2_rate(ensoniq, 22050);
        /* WARNING:
         * enabling the sample rate converter without properly programming
         * its parameters causes the chip to lock up (the SRC busy bit will
         * be stuck high, and I've found no way to rectify this other than
         * power cycle) - Thomas Sailer
         */
        snd_es1371_wait_src_ready(ensoniq);
        outl(0, ES_REG(ensoniq, 1371_SMPRATE));
        /* try reset codec directly */
        outl(ES_1371_CODEC_WRITE(0, 0), ES_REG(ensoniq, 1371_CODEC));
#endif
        outb(ensoniq->uartc = 0x00, ES_REG(ensoniq, UART_CONTROL));
        outb(0x00, ES_REG(ensoniq, UART_RES));
        outl(ensoniq->cssr, ES_REG(ensoniq, STATUS));
        synchronize_irq(ensoniq->irq);
}

#ifdef CONFIG_PM_SLEEP
static int snd_ensoniq_suspend(struct device *dev)
{
        struct snd_card *card = dev_get_drvdata(dev);
        struct ensoniq *ensoniq = card->private_data;
        
        snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);

        snd_pcm_suspend_all(ensoniq->pcm1);
        snd_pcm_suspend_all(ensoniq->pcm2);
        
#ifdef CHIP1371 
        snd_ac97_suspend(ensoniq->u.es1371.ac97);
#else
        /* try to reset AK4531 */
        outw(ES_1370_CODEC_WRITE(AK4531_RESET, 0x02), ES_REG(ensoniq, 1370_CODEC));
        inw(ES_REG(ensoniq, 1370_CODEC));
        udelay(100);
        outw(ES_1370_CODEC_WRITE(AK4531_RESET, 0x03), ES_REG(ensoniq, 1370_CODEC));
        inw(ES_REG(ensoniq, 1370_CODEC));
        udelay(100);
        snd_ak4531_suspend(ensoniq->u.es1370.ak4531);
#endif  
        return 0;
}

static int snd_ensoniq_resume(struct device *dev)
{
        struct snd_card *card = dev_get_drvdata(dev);
        struct ensoniq *ensoniq = card->private_data;

        snd_ensoniq_chip_init(ensoniq);

#ifdef CHIP1371 
        snd_ac97_resume(ensoniq->u.es1371.ac97);
#else
        snd_ak4531_resume(ensoniq->u.es1370.ak4531);
#endif  
        snd_power_change_state(card, SNDRV_CTL_POWER_D0);
        return 0;
}

static SIMPLE_DEV_PM_OPS(snd_ensoniq_pm, snd_ensoniq_suspend, snd_ensoniq_resume);
#define SND_ENSONIQ_PM_OPS      &snd_ensoniq_pm
#else
#define SND_ENSONIQ_PM_OPS      NULL
#endif /* CONFIG_PM_SLEEP */

static int snd_ensoniq_create(struct snd_card *card,
                              struct pci_dev *pci,
                              struct ensoniq **rensoniq)
{
        struct ensoniq *ensoniq;
        int err;
        static struct snd_device_ops ops = {
                .dev_free =     snd_ensoniq_dev_free,
        };

        *rensoniq = NULL;
        if ((err = pci_enable_device(pci)) < 0)
                return err;
        ensoniq = kzalloc(sizeof(*ensoniq), GFP_KERNEL);
        if (ensoniq == NULL) {
                pci_disable_device(pci);
                return -ENOMEM;
        }
        spin_lock_init(&ensoniq->reg_lock);
        mutex_init(&ensoniq->src_mutex);
        ensoniq->card = card;
        ensoniq->pci = pci;
        ensoniq->irq = -1;
        if ((err = pci_request_regions(pci, "Ensoniq AudioPCI")) < 0) {
                kfree(ensoniq);
                pci_disable_device(pci);
                return err;
        }
        ensoniq->port = pci_resource_start(pci, 0);
        if (request_irq(pci->irq, snd_audiopci_interrupt, IRQF_SHARED,
                        KBUILD_MODNAME, ensoniq)) {
                dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
                snd_ensoniq_free(ensoniq);
                return -EBUSY;
        }
        ensoniq->irq = pci->irq;
#ifdef CHIP1370
        if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
                                16, &ensoniq->dma_bug) < 0) {
                dev_err(card->dev, "unable to allocate space for phantom area - dma_bug\n");
                snd_ensoniq_free(ensoniq);
                return -EBUSY;
        }
#endif
        pci_set_master(pci);
        ensoniq->rev = pci->revision;
#ifdef CHIP1370
#if 0
        ensoniq->ctrl = ES_1370_CDC_EN | ES_1370_SERR_DISABLE |
                ES_1370_PCLKDIVO(ES_1370_SRTODIV(8000));
#else   /* get microphone working */
        ensoniq->ctrl = ES_1370_CDC_EN | ES_1370_PCLKDIVO(ES_1370_SRTODIV(8000));
#endif
        ensoniq->sctrl = 0;
#else
        ensoniq->ctrl = 0;
        ensoniq->sctrl = 0;
        ensoniq->cssr = 0;
        if (snd_pci_quirk_lookup(pci, es1371_amplifier_hack))
                ensoniq->ctrl |= ES_1371_GPIO_OUT(1);   /* turn amplifier on */

        if (es1371_quirk_lookup(ensoniq, es1371_ac97_reset_hack))
                ensoniq->cssr |= ES_1371_ST_AC97_RST;
#endif

        snd_ensoniq_chip_init(ensoniq);

        if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, ensoniq, &ops)) < 0) {
                snd_ensoniq_free(ensoniq);
                return err;
        }

        snd_ensoniq_proc_init(ensoniq);

        *rensoniq = ensoniq;
        return 0;
}

/*
 *  MIDI section
 */

static void snd_ensoniq_midi_interrupt(struct ensoniq * ensoniq)
{
        struct snd_rawmidi *rmidi = ensoniq->rmidi;
        unsigned char status, mask, byte;

        if (rmidi == NULL)
                return;
        /* do Rx at first */
        spin_lock(&ensoniq->reg_lock);
        mask = ensoniq->uartm & ES_MODE_INPUT ? ES_RXRDY : 0;
        while (mask) {
                status = inb(ES_REG(ensoniq, UART_STATUS));
                if ((status & mask) == 0)
                        break;
                byte = inb(ES_REG(ensoniq, UART_DATA));
                snd_rawmidi_receive(ensoniq->midi_input, &byte, 1);
        }
        spin_unlock(&ensoniq->reg_lock);

        /* do Tx at second */
        spin_lock(&ensoniq->reg_lock);
        mask = ensoniq->uartm & ES_MODE_OUTPUT ? ES_TXRDY : 0;
        while (mask) {
                status = inb(ES_REG(ensoniq, UART_STATUS));
                if ((status & mask) == 0)
                        break;
                if (snd_rawmidi_transmit(ensoniq->midi_output, &byte, 1) != 1) {
                        ensoniq->uartc &= ~ES_TXINTENM;
                        outb(ensoniq->uartc, ES_REG(ensoniq, UART_CONTROL));
                        mask &= ~ES_TXRDY;
                } else {
                        outb(byte, ES_REG(ensoniq, UART_DATA));
                }
        }
        spin_unlock(&ensoniq->reg_lock);
}

static int snd_ensoniq_midi_input_open(struct snd_rawmidi_substream *substream)
{
        struct ensoniq *ensoniq = substream->rmidi->private_data;

        spin_lock_irq(&ensoniq->reg_lock);
        ensoniq->uartm |= ES_MODE_INPUT;
        ensoniq->midi_input = substream;
        if (!(ensoniq->uartm & ES_MODE_OUTPUT)) {
                outb(ES_CNTRL(3), ES_REG(ensoniq, UART_CONTROL));
                outb(ensoniq->uartc = 0, ES_REG(ensoniq, UART_CONTROL));
                outl(ensoniq->ctrl |= ES_UART_EN, ES_REG(ensoniq, CONTROL));
        }
        spin_unlock_irq(&ensoniq->reg_lock);
        return 0;
}

static int snd_ensoniq_midi_input_close(struct snd_rawmidi_substream *substream)
{
        struct ensoniq *ensoniq = substream->rmidi->private_data;

        spin_lock_irq(&ensoniq->reg_lock);
        if (!(ensoniq->uartm & ES_MODE_OUTPUT)) {
                outb(ensoniq->uartc = 0, ES_REG(ensoniq, UART_CONTROL));
                outl(ensoniq->ctrl &= ~ES_UART_EN, ES_REG(ensoniq, CONTROL));
        } else {
                outb(ensoniq->uartc &= ~ES_RXINTEN, ES_REG(ensoniq, UART_CONTROL));
        }
        ensoniq->midi_input = NULL;
        ensoniq->uartm &= ~ES_MODE_INPUT;
        spin_unlock_irq(&ensoniq->reg_lock);
        return 0;
}

static int snd_ensoniq_midi_output_open(struct snd_rawmidi_substream *substream)
{
        struct ensoniq *ensoniq = substream->rmidi->private_data;

        spin_lock_irq(&ensoniq->reg_lock);
        ensoniq->uartm |= ES_MODE_OUTPUT;
        ensoniq->midi_output = substream;
        if (!(ensoniq->uartm & ES_MODE_INPUT)) {
                outb(ES_CNTRL(3), ES_REG(ensoniq, UART_CONTROL));
                outb(ensoniq->uartc = 0, ES_REG(ensoniq, UART_CONTROL));
                outl(ensoniq->ctrl |= ES_UART_EN, ES_REG(ensoniq, CONTROL));
        }
        spin_unlock_irq(&ensoniq->reg_lock);
        return 0;
}

static int snd_ensoniq_midi_output_close(struct snd_rawmidi_substream *substream)
{
        struct ensoniq *ensoniq = substream->rmidi->private_data;

        spin_lock_irq(&ensoniq->reg_lock);
        if (!(ensoniq->uartm & ES_MODE_INPUT)) {
                outb(ensoniq->uartc = 0, ES_REG(ensoniq, UART_CONTROL));
                outl(ensoniq->ctrl &= ~ES_UART_EN, ES_REG(ensoniq, CONTROL));
        } else {
                outb(ensoniq->uartc &= ~ES_TXINTENM, ES_REG(ensoniq, UART_CONTROL));
        }
        ensoniq->midi_output = NULL;
        ensoniq->uartm &= ~ES_MODE_OUTPUT;
        spin_unlock_irq(&ensoniq->reg_lock);
        return 0;
}

static void snd_ensoniq_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
{
        unsigned long flags;
        struct ensoniq *ensoniq = substream->rmidi->private_data;
        int idx;

        spin_lock_irqsave(&ensoniq->reg_lock, flags);
        if (up) {
                if ((ensoniq->uartc & ES_RXINTEN) == 0) {
                        /* empty input FIFO */
                        for (idx = 0; idx < 32; idx++)
                                inb(ES_REG(ensoniq, UART_DATA));
                        ensoniq->uartc |= ES_RXINTEN;
                        outb(ensoniq->uartc, ES_REG(ensoniq, UART_CONTROL));
                }
        } else {
                if (ensoniq->uartc & ES_RXINTEN) {
                        ensoniq->uartc &= ~ES_RXINTEN;
                        outb(ensoniq->uartc, ES_REG(ensoniq, UART_CONTROL));
                }
        }
        spin_unlock_irqrestore(&ensoniq->reg_lock, flags);
}

static void snd_ensoniq_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
{
        unsigned long flags;
        struct ensoniq *ensoniq = substream->rmidi->private_data;
        unsigned char byte;

        spin_lock_irqsave(&ensoniq->reg_lock, flags);
        if (up) {
                if (ES_TXINTENI(ensoniq->uartc) == 0) {
                        ensoniq->uartc |= ES_TXINTENO(1);
                        /* fill UART FIFO buffer at first, and turn Tx interrupts only if necessary */
                        while (ES_TXINTENI(ensoniq->uartc) == 1 &&
                               (inb(ES_REG(ensoniq, UART_STATUS)) & ES_TXRDY)) {
                                if (snd_rawmidi_transmit(substream, &byte, 1) != 1) {
                                        ensoniq->uartc &= ~ES_TXINTENM;
                                } else {
                                        outb(byte, ES_REG(ensoniq, UART_DATA));
                                }
                        }
                        outb(ensoniq->uartc, ES_REG(ensoniq, UART_CONTROL));
                }
        } else {
                if (ES_TXINTENI(ensoniq->uartc) == 1) {
                        ensoniq->uartc &= ~ES_TXINTENM;
                        outb(ensoniq->uartc, ES_REG(ensoniq, UART_CONTROL));
                }
        }
        spin_unlock_irqrestore(&ensoniq->reg_lock, flags);
}

static struct snd_rawmidi_ops snd_ensoniq_midi_output =
{
        .open =         snd_ensoniq_midi_output_open,
        .close =        snd_ensoniq_midi_output_close,
        .trigger =      snd_ensoniq_midi_output_trigger,
};

static struct snd_rawmidi_ops snd_ensoniq_midi_input =
{
        .open =         snd_ensoniq_midi_input_open,
        .close =        snd_ensoniq_midi_input_close,
        .trigger =      snd_ensoniq_midi_input_trigger,
};

static int snd_ensoniq_midi(struct ensoniq *ensoniq, int device)
{
        struct snd_rawmidi *rmidi;
        int err;

        if ((err = snd_rawmidi_new(ensoniq->card, "ES1370/1", device, 1, 1, &rmidi)) < 0)
                return err;
        strcpy(rmidi->name, CHIP_NAME);
        snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_ensoniq_midi_output);
        snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_ensoniq_midi_input);
        rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT |
                SNDRV_RAWMIDI_INFO_DUPLEX;
        rmidi->private_data = ensoniq;
        ensoniq->rmidi = rmidi;
        return 0;
}

/*
 *  Interrupt handler
 */

static irqreturn_t snd_audiopci_interrupt(int irq, void *dev_id)
{
        struct ensoniq *ensoniq = dev_id;
        unsigned int status, sctrl;

        if (ensoniq == NULL)
                return IRQ_NONE;

        status = inl(ES_REG(ensoniq, STATUS));
        if (!(status & ES_INTR))
                return IRQ_NONE;

        spin_lock(&ensoniq->reg_lock);
        sctrl = ensoniq->sctrl;
        if (status & ES_DAC1)
                sctrl &= ~ES_P1_INT_EN;
        if (status & ES_DAC2)
                sctrl &= ~ES_P2_INT_EN;
        if (status & ES_ADC)
                sctrl &= ~ES_R1_INT_EN;
        outl(sctrl, ES_REG(ensoniq, SERIAL));
        outl(ensoniq->sctrl, ES_REG(ensoniq, SERIAL));
        spin_unlock(&ensoniq->reg_lock);

        if (status & ES_UART)
                snd_ensoniq_midi_interrupt(ensoniq);
        if ((status & ES_DAC2) && ensoniq->playback2_substream)
                snd_pcm_period_elapsed(ensoniq->playback2_substream);
        if ((status & ES_ADC) && ensoniq->capture_substream)
                snd_pcm_period_elapsed(ensoniq->capture_substream);
        if ((status & ES_DAC1) && ensoniq->playback1_substream)
                snd_pcm_period_elapsed(ensoniq->playback1_substream);
        return IRQ_HANDLED;
}

static int snd_audiopci_probe(struct pci_dev *pci,
                              const struct pci_device_id *pci_id)
{
        static int dev;
        struct snd_card *card;
        struct ensoniq *ensoniq;
        int err, pcm_devs[2];

        if (dev >= SNDRV_CARDS)
                return -ENODEV;
        if (!enable[dev]) {
                dev++;
                return -ENOENT;
        }

        err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
                           0, &card);
        if (err < 0)
                return err;

        if ((err = snd_ensoniq_create(card, pci, &ensoniq)) < 0) {
                snd_card_free(card);
                return err;
        }
        card->private_data = ensoniq;

        pcm_devs[0] = 0; pcm_devs[1] = 1;
#ifdef CHIP1370
        if ((err = snd_ensoniq_1370_mixer(ensoniq)) < 0) {
                snd_card_free(card);
                return err;
        }
#endif
#ifdef CHIP1371
        if ((err = snd_ensoniq_1371_mixer(ensoniq, spdif[dev], lineio[dev])) < 0) {
                snd_card_free(card);
                return err;
        }
#endif
        if ((err = snd_ensoniq_pcm(ensoniq, 0)) < 0) {
                snd_card_free(card);
                return err;
        }
        if ((err = snd_ensoniq_pcm2(ensoniq, 1)) < 0) {
                snd_card_free(card);
                return err;
        }
        if ((err = snd_ensoniq_midi(ensoniq, 0)) < 0) {
                snd_card_free(card);
                return err;
        }

        snd_ensoniq_create_gameport(ensoniq, dev);

        strcpy(card->driver, DRIVER_NAME);

        strcpy(card->shortname, "Ensoniq AudioPCI");
        sprintf(card->longname, "%s %s at 0x%lx, irq %i",
                card->shortname,
                card->driver,
                ensoniq->port,
                ensoniq->irq);

        if ((err = snd_card_register(card)) < 0) {
                snd_card_free(card);
                return err;
        }

        pci_set_drvdata(pci, card);
        dev++;
        return 0;
}

static void snd_audiopci_remove(struct pci_dev *pci)
{
        snd_card_free(pci_get_drvdata(pci));
}

static struct pci_driver ens137x_driver = {
        .name = KBUILD_MODNAME,
        .id_table = snd_audiopci_ids,
        .probe = snd_audiopci_probe,
        .remove = snd_audiopci_remove,
        .driver = {
                .pm = SND_ENSONIQ_PM_OPS,
        },
};
        
module_pci_driver(ens137x_driver);