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cmipci.c
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cmipci.c
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/*
* Driver for C-Media CMI8338 and 8738 PCI soundcards.
* Copyright (c) 2000 by Takashi Iwai <[email protected]>
*
* 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
*/
/* Does not work. Warning may block system in capture mode */
/* #define USE_VAR48KRATE */
#include <sound/driver.h>
#include <asm/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/moduleparam.h>
#include <linux/mutex.h>
#include <sound/core.h>
#include <sound/info.h>
#include <sound/control.h>
#include <sound/pcm.h>
#include <sound/rawmidi.h>
#include <sound/mpu401.h>
#include <sound/opl3.h>
#include <sound/sb.h>
#include <sound/asoundef.h>
#include <sound/initval.h>
MODULE_AUTHOR("Takashi Iwai <[email protected]>");
MODULE_DESCRIPTION("C-Media CMI8x38 PCI");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{C-Media,CMI8738},"
"{C-Media,CMI8738B},"
"{C-Media,CMI8338A},"
"{C-Media,CMI8338B}}");
#if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
#define SUPPORT_JOYSTICK 1
#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 int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable switches */
static long mpu_port[SNDRV_CARDS];
static long fm_port[SNDRV_CARDS];
static int soft_ac3[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)]=1};
#ifdef SUPPORT_JOYSTICK
static int joystick_port[SNDRV_CARDS];
#endif
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for C-Media PCI soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for C-Media PCI soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable C-Media PCI soundcard.");
module_param_array(mpu_port, long, NULL, 0444);
MODULE_PARM_DESC(mpu_port, "MPU-401 port.");
module_param_array(fm_port, long, NULL, 0444);
MODULE_PARM_DESC(fm_port, "FM port.");
module_param_array(soft_ac3, bool, NULL, 0444);
MODULE_PARM_DESC(soft_ac3, "Sofware-conversion of raw SPDIF packets (model 033 only).");
#ifdef SUPPORT_JOYSTICK
module_param_array(joystick_port, int, NULL, 0444);
MODULE_PARM_DESC(joystick_port, "Joystick port address.");
#endif
/*
* CM8x38 registers definition
*/
#define CM_REG_FUNCTRL0 0x00
#define CM_RST_CH1 0x00080000
#define CM_RST_CH0 0x00040000
#define CM_CHEN1 0x00020000 /* ch1: enable */
#define CM_CHEN0 0x00010000 /* ch0: enable */
#define CM_PAUSE1 0x00000008 /* ch1: pause */
#define CM_PAUSE0 0x00000004 /* ch0: pause */
#define CM_CHADC1 0x00000002 /* ch1, 0:playback, 1:record */
#define CM_CHADC0 0x00000001 /* ch0, 0:playback, 1:record */
#define CM_REG_FUNCTRL1 0x04
#define CM_ASFC_MASK 0x0000E000 /* ADC sampling frequency */
#define CM_ASFC_SHIFT 13
#define CM_DSFC_MASK 0x00001C00 /* DAC sampling frequency */
#define CM_DSFC_SHIFT 10
#define CM_SPDF_1 0x00000200 /* SPDIF IN/OUT at channel B */
#define CM_SPDF_0 0x00000100 /* SPDIF OUT only channel A */
#define CM_SPDFLOOP 0x00000080 /* ext. SPDIIF/OUT -> IN loopback */
#define CM_SPDO2DAC 0x00000040 /* SPDIF/OUT can be heard from internal DAC */
#define CM_INTRM 0x00000020 /* master control block (MCB) interrupt enabled */
#define CM_BREQ 0x00000010 /* bus master enabled */
#define CM_VOICE_EN 0x00000008 /* legacy voice (SB16,FM) */
#define CM_UART_EN 0x00000004 /* UART */
#define CM_JYSTK_EN 0x00000002 /* joy stick */
#define CM_REG_CHFORMAT 0x08
#define CM_CHB3D5C 0x80000000 /* 5,6 channels */
#define CM_CHB3D 0x20000000 /* 4 channels */
#define CM_CHIP_MASK1 0x1f000000
#define CM_CHIP_037 0x01000000
#define CM_SPDIF_SELECT1 0x00080000 /* for model <= 037 ? */
#define CM_AC3EN1 0x00100000 /* enable AC3: model 037 */
#define CM_SPD24SEL 0x00020000 /* 24bit spdif: model 037 */
/* #define CM_SPDIF_INVERSE 0x00010000 */ /* ??? */
#define CM_ADCBITLEN_MASK 0x0000C000
#define CM_ADCBITLEN_16 0x00000000
#define CM_ADCBITLEN_15 0x00004000
#define CM_ADCBITLEN_14 0x00008000
#define CM_ADCBITLEN_13 0x0000C000
#define CM_ADCDACLEN_MASK 0x00003000
#define CM_ADCDACLEN_060 0x00000000
#define CM_ADCDACLEN_066 0x00001000
#define CM_ADCDACLEN_130 0x00002000
#define CM_ADCDACLEN_280 0x00003000
#define CM_CH1_SRATE_176K 0x00000800
#define CM_CH1_SRATE_88K 0x00000400
#define CM_CH0_SRATE_176K 0x00000200
#define CM_CH0_SRATE_88K 0x00000100
#define CM_SPDIF_INVERSE2 0x00000080 /* model 055? */
#define CM_CH1FMT_MASK 0x0000000C
#define CM_CH1FMT_SHIFT 2
#define CM_CH0FMT_MASK 0x00000003
#define CM_CH0FMT_SHIFT 0
#define CM_REG_INT_HLDCLR 0x0C
#define CM_CHIP_MASK2 0xff000000
#define CM_CHIP_039 0x04000000
#define CM_CHIP_039_6CH 0x01000000
#define CM_CHIP_055 0x08000000
#define CM_CHIP_8768 0x20000000
#define CM_TDMA_INT_EN 0x00040000
#define CM_CH1_INT_EN 0x00020000
#define CM_CH0_INT_EN 0x00010000
#define CM_INT_HOLD 0x00000002
#define CM_INT_CLEAR 0x00000001
#define CM_REG_INT_STATUS 0x10
#define CM_INTR 0x80000000
#define CM_VCO 0x08000000 /* Voice Control? CMI8738 */
#define CM_MCBINT 0x04000000 /* Master Control Block abort cond.? */
#define CM_UARTINT 0x00010000
#define CM_LTDMAINT 0x00008000
#define CM_HTDMAINT 0x00004000
#define CM_XDO46 0x00000080 /* Modell 033? Direct programming EEPROM (read data register) */
#define CM_LHBTOG 0x00000040 /* High/Low status from DMA ctrl register */
#define CM_LEG_HDMA 0x00000020 /* Legacy is in High DMA channel */
#define CM_LEG_STEREO 0x00000010 /* Legacy is in Stereo mode */
#define CM_CH1BUSY 0x00000008
#define CM_CH0BUSY 0x00000004
#define CM_CHINT1 0x00000002
#define CM_CHINT0 0x00000001
#define CM_REG_LEGACY_CTRL 0x14
#define CM_NXCHG 0x80000000 /* h/w multi channels? */
#define CM_VMPU_MASK 0x60000000 /* MPU401 i/o port address */
#define CM_VMPU_330 0x00000000
#define CM_VMPU_320 0x20000000
#define CM_VMPU_310 0x40000000
#define CM_VMPU_300 0x60000000
#define CM_VSBSEL_MASK 0x0C000000 /* SB16 base address */
#define CM_VSBSEL_220 0x00000000
#define CM_VSBSEL_240 0x04000000
#define CM_VSBSEL_260 0x08000000
#define CM_VSBSEL_280 0x0C000000
#define CM_FMSEL_MASK 0x03000000 /* FM OPL3 base address */
#define CM_FMSEL_388 0x00000000
#define CM_FMSEL_3C8 0x01000000
#define CM_FMSEL_3E0 0x02000000
#define CM_FMSEL_3E8 0x03000000
#define CM_ENSPDOUT 0x00800000 /* enable XPDIF/OUT to I/O interface */
#define CM_SPDCOPYRHT 0x00400000 /* set copyright spdif in/out */
#define CM_DAC2SPDO 0x00200000 /* enable wave+fm_midi -> SPDIF/OUT */
#define CM_SETRETRY 0x00010000 /* 0: legacy i/o wait (default), 1: legacy i/o bus retry */
#define CM_CHB3D6C 0x00008000 /* 5.1 channels support */
#define CM_LINE_AS_BASS 0x00006000 /* use line-in as bass */
#define CM_REG_MISC_CTRL 0x18
#define CM_PWD 0x80000000
#define CM_RESET 0x40000000
#define CM_SFIL_MASK 0x30000000
#define CM_TXVX 0x08000000
#define CM_N4SPK3D 0x04000000 /* 4ch output */
#define CM_SPDO5V 0x02000000 /* 5V spdif output (1 = 0.5v (coax)) */
#define CM_SPDIF48K 0x01000000 /* write */
#define CM_SPATUS48K 0x01000000 /* read */
#define CM_ENDBDAC 0x00800000 /* enable dual dac */
#define CM_XCHGDAC 0x00400000 /* 0: front=ch0, 1: front=ch1 */
#define CM_SPD32SEL 0x00200000 /* 0: 16bit SPDIF, 1: 32bit */
#define CM_SPDFLOOPI 0x00100000 /* int. SPDIF-IN -> int. OUT */
#define CM_FM_EN 0x00080000 /* enalbe FM */
#define CM_AC3EN2 0x00040000 /* enable AC3: model 039 */
#define CM_VIDWPDSB 0x00010000
#define CM_SPDF_AC97 0x00008000 /* 0: SPDIF/OUT 44.1K, 1: 48K */
#define CM_MASK_EN 0x00004000
#define CM_VIDWPPRT 0x00002000
#define CM_SFILENB 0x00001000
#define CM_MMODE_MASK 0x00000E00
#define CM_SPDIF_SELECT2 0x00000100 /* for model > 039 ? */
#define CM_ENCENTER 0x00000080
#define CM_FLINKON 0x00000040
#define CM_FLINKOFF 0x00000020
#define CM_MIDSMP 0x00000010
#define CM_UPDDMA_MASK 0x0000000C
#define CM_TWAIT_MASK 0x00000003
/* byte */
#define CM_REG_MIXER0 0x20
#define CM_REG_SB16_DATA 0x22
#define CM_REG_SB16_ADDR 0x23
#define CM_REFFREQ_XIN (315*1000*1000)/22 /* 14.31818 Mhz reference clock frequency pin XIN */
#define CM_ADCMULT_XIN 512 /* Guessed (487 best for 44.1kHz, not for 88/176kHz) */
#define CM_TOLERANCE_RATE 0.001 /* Tolerance sample rate pitch (1000ppm) */
#define CM_MAXIMUM_RATE 80000000 /* Note more than 80MHz */
#define CM_REG_MIXER1 0x24
#define CM_FMMUTE 0x80 /* mute FM */
#define CM_FMMUTE_SHIFT 7
#define CM_WSMUTE 0x40 /* mute PCM */
#define CM_WSMUTE_SHIFT 6
#define CM_SPK4 0x20 /* lin-in -> rear line out */
#define CM_SPK4_SHIFT 5
#define CM_REAR2FRONT 0x10 /* exchange rear/front */
#define CM_REAR2FRONT_SHIFT 4
#define CM_WAVEINL 0x08 /* digital wave rec. left chan */
#define CM_WAVEINL_SHIFT 3
#define CM_WAVEINR 0x04 /* digical wave rec. right */
#define CM_WAVEINR_SHIFT 2
#define CM_X3DEN 0x02 /* 3D surround enable */
#define CM_X3DEN_SHIFT 1
#define CM_CDPLAY 0x01 /* enable SPDIF/IN PCM -> DAC */
#define CM_CDPLAY_SHIFT 0
#define CM_REG_MIXER2 0x25
#define CM_RAUXREN 0x80 /* AUX right capture */
#define CM_RAUXREN_SHIFT 7
#define CM_RAUXLEN 0x40 /* AUX left capture */
#define CM_RAUXLEN_SHIFT 6
#define CM_VAUXRM 0x20 /* AUX right mute */
#define CM_VAUXRM_SHIFT 5
#define CM_VAUXLM 0x10 /* AUX left mute */
#define CM_VAUXLM_SHIFT 4
#define CM_VADMIC_MASK 0x0e /* mic gain level (0-3) << 1 */
#define CM_VADMIC_SHIFT 1
#define CM_MICGAINZ 0x01 /* mic boost */
#define CM_MICGAINZ_SHIFT 0
#define CM_REG_MIXER3 0x24
#define CM_REG_AUX_VOL 0x26
#define CM_VAUXL_MASK 0xf0
#define CM_VAUXR_MASK 0x0f
#define CM_REG_MISC 0x27
#define CM_XGPO1 0x20
// #define CM_XGPBIO 0x04
#define CM_MIC_CENTER_LFE 0x04 /* mic as center/lfe out? (model 039 or later?) */
#define CM_SPDIF_INVERSE 0x04 /* spdif input phase inverse (model 037) */
#define CM_SPDVALID 0x02 /* spdif input valid check */
#define CM_DMAUTO 0x01
#define CM_REG_AC97 0x28 /* hmmm.. do we have ac97 link? */
/*
* For CMI-8338 (0x28 - 0x2b) .. is this valid for CMI-8738
* or identical with AC97 codec?
*/
#define CM_REG_EXTERN_CODEC CM_REG_AC97
/*
* MPU401 pci port index address 0x40 - 0x4f (CMI-8738 spec ver. 0.6)
*/
#define CM_REG_MPU_PCI 0x40
/*
* FM pci port index address 0x50 - 0x5f (CMI-8738 spec ver. 0.6)
*/
#define CM_REG_FM_PCI 0x50
/*
* access from SB-mixer port
*/
#define CM_REG_EXTENT_IND 0xf0
#define CM_VPHONE_MASK 0xe0 /* Phone volume control (0-3) << 5 */
#define CM_VPHONE_SHIFT 5
#define CM_VPHOM 0x10 /* Phone mute control */
#define CM_VSPKM 0x08 /* Speaker mute control, default high */
#define CM_RLOOPREN 0x04 /* Rec. R-channel enable */
#define CM_RLOOPLEN 0x02 /* Rec. L-channel enable */
#define CM_VADMIC3 0x01 /* Mic record boost */
/*
* CMI-8338 spec ver 0.5 (this is not valid for CMI-8738):
* the 8 registers 0xf8 - 0xff are used for programming m/n counter by the PLL
* unit (readonly?).
*/
#define CM_REG_PLL 0xf8
/*
* extended registers
*/
#define CM_REG_CH0_FRAME1 0x80 /* base address */
#define CM_REG_CH0_FRAME2 0x84
#define CM_REG_CH1_FRAME1 0x88 /* 0-15: count of samples at bus master; buffer size */
#define CM_REG_CH1_FRAME2 0x8C /* 16-31: count of samples at codec; fragment size */
#define CM_REG_EXT_MISC 0x90
#define CM_REG_MISC_CTRL_8768 0x92 /* reg. name the same as 0x18 */
#define CM_CHB3D8C 0x20 /* 7.1 channels support */
#define CM_SPD32FMT 0x10 /* SPDIF/IN 32k */
#define CM_ADC2SPDIF 0x08 /* ADC output to SPDIF/OUT */
#define CM_SHAREADC 0x04 /* DAC in ADC as Center/LFE */
#define CM_REALTCMP 0x02 /* monitor the CMPL/CMPR of ADC */
#define CM_INVLRCK 0x01 /* invert ZVPORT's LRCK */
/*
* size of i/o region
*/
#define CM_EXTENT_CODEC 0x100
#define CM_EXTENT_MIDI 0x2
#define CM_EXTENT_SYNTH 0x4
/*
* channels for playback / capture
*/
#define CM_CH_PLAY 0
#define CM_CH_CAPT 1
/*
* flags to check device open/close
*/
#define CM_OPEN_NONE 0
#define CM_OPEN_CH_MASK 0x01
#define CM_OPEN_DAC 0x10
#define CM_OPEN_ADC 0x20
#define CM_OPEN_SPDIF 0x40
#define CM_OPEN_MCHAN 0x80
#define CM_OPEN_PLAYBACK (CM_CH_PLAY | CM_OPEN_DAC)
#define CM_OPEN_PLAYBACK2 (CM_CH_CAPT | CM_OPEN_DAC)
#define CM_OPEN_PLAYBACK_MULTI (CM_CH_PLAY | CM_OPEN_DAC | CM_OPEN_MCHAN)
#define CM_OPEN_CAPTURE (CM_CH_CAPT | CM_OPEN_ADC)
#define CM_OPEN_SPDIF_PLAYBACK (CM_CH_PLAY | CM_OPEN_DAC | CM_OPEN_SPDIF)
#define CM_OPEN_SPDIF_CAPTURE (CM_CH_CAPT | CM_OPEN_ADC | CM_OPEN_SPDIF)
#if CM_CH_PLAY == 1
#define CM_PLAYBACK_SRATE_176K CM_CH1_SRATE_176K
#define CM_PLAYBACK_SPDF CM_SPDF_1
#define CM_CAPTURE_SPDF CM_SPDF_0
#else
#define CM_PLAYBACK_SRATE_176K CM_CH0_SRATE_176K
#define CM_PLAYBACK_SPDF CM_SPDF_0
#define CM_CAPTURE_SPDF CM_SPDF_1
#endif
/*
* driver data
*/
struct cmipci_pcm {
struct snd_pcm_substream *substream;
int running; /* dac/adc running? */
unsigned int dma_size; /* in frames */
unsigned int period_size; /* in frames */
unsigned int offset; /* physical address of the buffer */
unsigned int fmt; /* format bits */
int ch; /* channel (0/1) */
unsigned int is_dac; /* is dac? */
int bytes_per_frame;
int shift;
};
/* mixer elements toggled/resumed during ac3 playback */
struct cmipci_mixer_auto_switches {
const char *name; /* switch to toggle */
int toggle_on; /* value to change when ac3 mode */
};
static const struct cmipci_mixer_auto_switches cm_saved_mixer[] = {
{"PCM Playback Switch", 0},
{"IEC958 Output Switch", 1},
{"IEC958 Mix Analog", 0},
// {"IEC958 Out To DAC", 1}, // no longer used
{"IEC958 Loop", 0},
};
#define CM_SAVED_MIXERS ARRAY_SIZE(cm_saved_mixer)
struct cmipci {
struct snd_card *card;
struct pci_dev *pci;
unsigned int device; /* device ID */
int irq;
unsigned long iobase;
unsigned int ctrl; /* FUNCTRL0 current value */
struct snd_pcm *pcm; /* DAC/ADC PCM */
struct snd_pcm *pcm2; /* 2nd DAC */
struct snd_pcm *pcm_spdif; /* SPDIF */
int chip_version;
int max_channels;
unsigned int has_dual_dac: 1;
unsigned int can_ac3_sw: 1;
unsigned int can_ac3_hw: 1;
unsigned int can_multi_ch: 1;
unsigned int do_soft_ac3: 1;
unsigned int spdif_playback_avail: 1; /* spdif ready? */
unsigned int spdif_playback_enabled: 1; /* spdif switch enabled? */
int spdif_counter; /* for software AC3 */
unsigned int dig_status;
unsigned int dig_pcm_status;
struct snd_pcm_hardware *hw_info[3]; /* for playbacks */
int opened[2]; /* open mode */
struct mutex open_mutex;
unsigned int mixer_insensitive: 1;
struct snd_kcontrol *mixer_res_ctl[CM_SAVED_MIXERS];
int mixer_res_status[CM_SAVED_MIXERS];
struct cmipci_pcm channel[2]; /* ch0 - DAC, ch1 - ADC or 2nd DAC */
/* external MIDI */
struct snd_rawmidi *rmidi;
#ifdef SUPPORT_JOYSTICK
struct gameport *gameport;
#endif
spinlock_t reg_lock;
#ifdef CONFIG_PM
unsigned int saved_regs[0x20];
unsigned char saved_mixers[0x20];
#endif
};
/* read/write operations for dword register */
static inline void snd_cmipci_write(struct cmipci *cm, unsigned int cmd, unsigned int data)
{
outl(data, cm->iobase + cmd);
}
static inline unsigned int snd_cmipci_read(struct cmipci *cm, unsigned int cmd)
{
return inl(cm->iobase + cmd);
}
/* read/write operations for word register */
static inline void snd_cmipci_write_w(struct cmipci *cm, unsigned int cmd, unsigned short data)
{
outw(data, cm->iobase + cmd);
}
static inline unsigned short snd_cmipci_read_w(struct cmipci *cm, unsigned int cmd)
{
return inw(cm->iobase + cmd);
}
/* read/write operations for byte register */
static inline void snd_cmipci_write_b(struct cmipci *cm, unsigned int cmd, unsigned char data)
{
outb(data, cm->iobase + cmd);
}
static inline unsigned char snd_cmipci_read_b(struct cmipci *cm, unsigned int cmd)
{
return inb(cm->iobase + cmd);
}
/* bit operations for dword register */
static int snd_cmipci_set_bit(struct cmipci *cm, unsigned int cmd, unsigned int flag)
{
unsigned int val, oval;
val = oval = inl(cm->iobase + cmd);
val |= flag;
if (val == oval)
return 0;
outl(val, cm->iobase + cmd);
return 1;
}
static int snd_cmipci_clear_bit(struct cmipci *cm, unsigned int cmd, unsigned int flag)
{
unsigned int val, oval;
val = oval = inl(cm->iobase + cmd);
val &= ~flag;
if (val == oval)
return 0;
outl(val, cm->iobase + cmd);
return 1;
}
/* bit operations for byte register */
static int snd_cmipci_set_bit_b(struct cmipci *cm, unsigned int cmd, unsigned char flag)
{
unsigned char val, oval;
val = oval = inb(cm->iobase + cmd);
val |= flag;
if (val == oval)
return 0;
outb(val, cm->iobase + cmd);
return 1;
}
static int snd_cmipci_clear_bit_b(struct cmipci *cm, unsigned int cmd, unsigned char flag)
{
unsigned char val, oval;
val = oval = inb(cm->iobase + cmd);
val &= ~flag;
if (val == oval)
return 0;
outb(val, cm->iobase + cmd);
return 1;
}
/*
* PCM interface
*/
/*
* calculate frequency
*/
static unsigned int rates[] = { 5512, 11025, 22050, 44100, 8000, 16000, 32000, 48000 };
static unsigned int snd_cmipci_rate_freq(unsigned int rate)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(rates); i++) {
if (rates[i] == rate)
return i;
}
snd_BUG();
return 0;
}
#ifdef USE_VAR48KRATE
/*
* Determine PLL values for frequency setup, maybe the CMI8338 (CMI8738???)
* does it this way .. maybe not. Never get any information from C-Media about
* that <[email protected]>.
*/
static int snd_cmipci_pll_rmn(unsigned int rate, unsigned int adcmult, int *r, int *m, int *n)
{
unsigned int delta, tolerance;
int xm, xn, xr;
for (*r = 0; rate < CM_MAXIMUM_RATE/adcmult; *r += (1<<5))
rate <<= 1;
*n = -1;
if (*r > 0xff)
goto out;
tolerance = rate*CM_TOLERANCE_RATE;
for (xn = (1+2); xn < (0x1f+2); xn++) {
for (xm = (1+2); xm < (0xff+2); xm++) {
xr = ((CM_REFFREQ_XIN/adcmult) * xm) / xn;
if (xr < rate)
delta = rate - xr;
else
delta = xr - rate;
/*
* If we found one, remember this,
* and try to find a closer one
*/
if (delta < tolerance) {
tolerance = delta;
*m = xm - 2;
*n = xn - 2;
}
}
}
out:
return (*n > -1);
}
/*
* Program pll register bits, I assume that the 8 registers 0xf8 upto 0xff
* are mapped onto the 8 ADC/DAC sampling frequency which can be choosen
* at the register CM_REG_FUNCTRL1 (0x04).
* Problem: other ways are also possible (any information about that?)
*/
static void snd_cmipci_set_pll(struct cmipci *cm, unsigned int rate, unsigned int slot)
{
unsigned int reg = CM_REG_PLL + slot;
/*
* Guess that this programs at reg. 0x04 the pos 15:13/12:10
* for DSFC/ASFC (000 upto 111).
*/
/* FIXME: Init (Do we've to set an other register first before programming?) */
/* FIXME: Is this correct? Or shouldn't the m/n/r values be used for that? */
snd_cmipci_write_b(cm, reg, rate>>8);
snd_cmipci_write_b(cm, reg, rate&0xff);
/* FIXME: Setup (Do we've to set an other register first to enable this?) */
}
#endif /* USE_VAR48KRATE */
static int snd_cmipci_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_cmipci_playback2_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct cmipci *cm = snd_pcm_substream_chip(substream);
if (params_channels(hw_params) > 2) {
mutex_lock(&cm->open_mutex);
if (cm->opened[CM_CH_PLAY]) {
mutex_unlock(&cm->open_mutex);
return -EBUSY;
}
/* reserve the channel A */
cm->opened[CM_CH_PLAY] = CM_OPEN_PLAYBACK_MULTI;
mutex_unlock(&cm->open_mutex);
}
return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
}
static void snd_cmipci_ch_reset(struct cmipci *cm, int ch)
{
int reset = CM_RST_CH0 << (cm->channel[ch].ch);
snd_cmipci_write(cm, CM_REG_FUNCTRL0, cm->ctrl | reset);
snd_cmipci_write(cm, CM_REG_FUNCTRL0, cm->ctrl & ~reset);
udelay(10);
}
static int snd_cmipci_hw_free(struct snd_pcm_substream *substream)
{
return snd_pcm_lib_free_pages(substream);
}
/*
*/
static unsigned int hw_channels[] = {1, 2, 4, 5, 6, 8};
static struct snd_pcm_hw_constraint_list hw_constraints_channels_4 = {
.count = 3,
.list = hw_channels,
.mask = 0,
};
static struct snd_pcm_hw_constraint_list hw_constraints_channels_6 = {
.count = 5,
.list = hw_channels,
.mask = 0,
};
static struct snd_pcm_hw_constraint_list hw_constraints_channels_8 = {
.count = 6,
.list = hw_channels,
.mask = 0,
};
static int set_dac_channels(struct cmipci *cm, struct cmipci_pcm *rec, int channels)
{
if (channels > 2) {
if (! cm->can_multi_ch)
return -EINVAL;
if (rec->fmt != 0x03) /* stereo 16bit only */
return -EINVAL;
spin_lock_irq(&cm->reg_lock);
snd_cmipci_set_bit(cm, CM_REG_LEGACY_CTRL, CM_NXCHG);
snd_cmipci_set_bit(cm, CM_REG_MISC_CTRL, CM_XCHGDAC);
if (channels > 4) {
snd_cmipci_clear_bit(cm, CM_REG_CHFORMAT, CM_CHB3D);
snd_cmipci_set_bit(cm, CM_REG_CHFORMAT, CM_CHB3D5C);
} else {
snd_cmipci_clear_bit(cm, CM_REG_CHFORMAT, CM_CHB3D5C);
snd_cmipci_set_bit(cm, CM_REG_CHFORMAT, CM_CHB3D);
}
if (channels >= 6) {
snd_cmipci_set_bit(cm, CM_REG_LEGACY_CTRL, CM_CHB3D6C);
snd_cmipci_set_bit(cm, CM_REG_MISC_CTRL, CM_ENCENTER);
} else {
snd_cmipci_clear_bit(cm, CM_REG_LEGACY_CTRL, CM_CHB3D6C);
snd_cmipci_clear_bit(cm, CM_REG_MISC_CTRL, CM_ENCENTER);
}
if (cm->chip_version == 68) {
if (channels == 8) {
snd_cmipci_set_bit(cm, CM_REG_MISC_CTRL_8768, CM_CHB3D8C);
} else {
snd_cmipci_clear_bit(cm, CM_REG_MISC_CTRL_8768, CM_CHB3D8C);
}
}
spin_unlock_irq(&cm->reg_lock);
} else {
if (cm->can_multi_ch) {
spin_lock_irq(&cm->reg_lock);
snd_cmipci_clear_bit(cm, CM_REG_LEGACY_CTRL, CM_NXCHG);
snd_cmipci_clear_bit(cm, CM_REG_CHFORMAT, CM_CHB3D);
snd_cmipci_clear_bit(cm, CM_REG_CHFORMAT, CM_CHB3D5C);
snd_cmipci_clear_bit(cm, CM_REG_LEGACY_CTRL, CM_CHB3D6C);
snd_cmipci_clear_bit(cm, CM_REG_MISC_CTRL, CM_ENCENTER);
snd_cmipci_clear_bit(cm, CM_REG_MISC_CTRL, CM_XCHGDAC);
spin_unlock_irq(&cm->reg_lock);
}
}
return 0;
}
/*
* prepare playback/capture channel
* channel to be used must have been set in rec->ch.
*/
static int snd_cmipci_pcm_prepare(struct cmipci *cm, struct cmipci_pcm *rec,
struct snd_pcm_substream *substream)
{
unsigned int reg, freq, val;
struct snd_pcm_runtime *runtime = substream->runtime;
rec->fmt = 0;
rec->shift = 0;
if (snd_pcm_format_width(runtime->format) >= 16) {
rec->fmt |= 0x02;
if (snd_pcm_format_width(runtime->format) > 16)
rec->shift++; /* 24/32bit */
}
if (runtime->channels > 1)
rec->fmt |= 0x01;
if (rec->is_dac && set_dac_channels(cm, rec, runtime->channels) < 0) {
snd_printd("cannot set dac channels\n");
return -EINVAL;
}
rec->offset = runtime->dma_addr;
/* buffer and period sizes in frame */
rec->dma_size = runtime->buffer_size << rec->shift;
rec->period_size = runtime->period_size << rec->shift;
if (runtime->channels > 2) {
/* multi-channels */
rec->dma_size = (rec->dma_size * runtime->channels) / 2;
rec->period_size = (rec->period_size * runtime->channels) / 2;
}
spin_lock_irq(&cm->reg_lock);
/* set buffer address */
reg = rec->ch ? CM_REG_CH1_FRAME1 : CM_REG_CH0_FRAME1;
snd_cmipci_write(cm, reg, rec->offset);
/* program sample counts */
reg = rec->ch ? CM_REG_CH1_FRAME2 : CM_REG_CH0_FRAME2;
snd_cmipci_write_w(cm, reg, rec->dma_size - 1);
snd_cmipci_write_w(cm, reg + 2, rec->period_size - 1);
/* set adc/dac flag */
val = rec->ch ? CM_CHADC1 : CM_CHADC0;
if (rec->is_dac)
cm->ctrl &= ~val;
else
cm->ctrl |= val;
snd_cmipci_write(cm, CM_REG_FUNCTRL0, cm->ctrl);
//snd_printd("cmipci: functrl0 = %08x\n", cm->ctrl);
/* set sample rate */
freq = snd_cmipci_rate_freq(runtime->rate);
val = snd_cmipci_read(cm, CM_REG_FUNCTRL1);
if (rec->ch) {
val &= ~CM_ASFC_MASK;
val |= (freq << CM_ASFC_SHIFT) & CM_ASFC_MASK;
} else {
val &= ~CM_DSFC_MASK;
val |= (freq << CM_DSFC_SHIFT) & CM_DSFC_MASK;
}
snd_cmipci_write(cm, CM_REG_FUNCTRL1, val);
//snd_printd("cmipci: functrl1 = %08x\n", val);
/* set format */
val = snd_cmipci_read(cm, CM_REG_CHFORMAT);
if (rec->ch) {
val &= ~CM_CH1FMT_MASK;
val |= rec->fmt << CM_CH1FMT_SHIFT;
} else {
val &= ~CM_CH0FMT_MASK;
val |= rec->fmt << CM_CH0FMT_SHIFT;
}
snd_cmipci_write(cm, CM_REG_CHFORMAT, val);
//snd_printd("cmipci: chformat = %08x\n", val);
rec->running = 0;
spin_unlock_irq(&cm->reg_lock);
return 0;
}
/*
* PCM trigger/stop
*/
static int snd_cmipci_pcm_trigger(struct cmipci *cm, struct cmipci_pcm *rec,
struct snd_pcm_substream *substream, int cmd)
{
unsigned int inthld, chen, reset, pause;
int result = 0;
inthld = CM_CH0_INT_EN << rec->ch;
chen = CM_CHEN0 << rec->ch;
reset = CM_RST_CH0 << rec->ch;
pause = CM_PAUSE0 << rec->ch;
spin_lock(&cm->reg_lock);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
rec->running = 1;
/* set interrupt */
snd_cmipci_set_bit(cm, CM_REG_INT_HLDCLR, inthld);
cm->ctrl |= chen;
/* enable channel */
snd_cmipci_write(cm, CM_REG_FUNCTRL0, cm->ctrl);
//snd_printd("cmipci: functrl0 = %08x\n", cm->ctrl);
break;
case SNDRV_PCM_TRIGGER_STOP:
rec->running = 0;
/* disable interrupt */
snd_cmipci_clear_bit(cm, CM_REG_INT_HLDCLR, inthld);
/* reset */
cm->ctrl &= ~chen;
snd_cmipci_write(cm, CM_REG_FUNCTRL0, cm->ctrl | reset);
snd_cmipci_write(cm, CM_REG_FUNCTRL0, cm->ctrl & ~reset);
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
case SNDRV_PCM_TRIGGER_SUSPEND:
cm->ctrl |= pause;
snd_cmipci_write(cm, CM_REG_FUNCTRL0, cm->ctrl);
break;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
case SNDRV_PCM_TRIGGER_RESUME:
cm->ctrl &= ~pause;
snd_cmipci_write(cm, CM_REG_FUNCTRL0, cm->ctrl);
break;
default:
result = -EINVAL;
break;
}
spin_unlock(&cm->reg_lock);
return result;
}
/*
* return the current pointer
*/
static snd_pcm_uframes_t snd_cmipci_pcm_pointer(struct cmipci *cm, struct cmipci_pcm *rec,
struct snd_pcm_substream *substream)
{
size_t ptr;
unsigned int reg;
if (!rec->running)
return 0;
#if 1 // this seems better..
reg = rec->ch ? CM_REG_CH1_FRAME2 : CM_REG_CH0_FRAME2;
ptr = rec->dma_size - (snd_cmipci_read_w(cm, reg) + 1);
ptr >>= rec->shift;
#else
reg = rec->ch ? CM_REG_CH1_FRAME1 : CM_REG_CH0_FRAME1;
ptr = snd_cmipci_read(cm, reg) - rec->offset;
ptr = bytes_to_frames(substream->runtime, ptr);
#endif
if (substream->runtime->channels > 2)
ptr = (ptr * 2) / substream->runtime->channels;
return ptr;
}
/*
* playback
*/
static int snd_cmipci_playback_trigger(struct snd_pcm_substream *substream,
int cmd)
{
struct cmipci *cm = snd_pcm_substream_chip(substream);
return snd_cmipci_pcm_trigger(cm, &cm->channel[CM_CH_PLAY], substream, cmd);
}
static snd_pcm_uframes_t snd_cmipci_playback_pointer(struct snd_pcm_substream *substream)
{
struct cmipci *cm = snd_pcm_substream_chip(substream);
return snd_cmipci_pcm_pointer(cm, &cm->channel[CM_CH_PLAY], substream);
}
/*
* capture
*/
static int snd_cmipci_capture_trigger(struct snd_pcm_substream *substream,
int cmd)
{
struct cmipci *cm = snd_pcm_substream_chip(substream);
return snd_cmipci_pcm_trigger(cm, &cm->channel[CM_CH_CAPT], substream, cmd);
}
static snd_pcm_uframes_t snd_cmipci_capture_pointer(struct snd_pcm_substream *substream)
{
struct cmipci *cm = snd_pcm_substream_chip(substream);
return snd_cmipci_pcm_pointer(cm, &cm->channel[CM_CH_CAPT], substream);
}
/*
* hw preparation for spdif
*/
static int snd_cmipci_spdif_default_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_cmipci_spdif_default_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct cmipci *chip = snd_kcontrol_chip(kcontrol);
int i;
spin_lock_irq(&chip->reg_lock);
for (i = 0; i < 4; i++)
ucontrol->value.iec958.status[i] = (chip->dig_status >> (i * 8)) & 0xff;
spin_unlock_irq(&chip->reg_lock);
return 0;
}
static int snd_cmipci_spdif_default_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct cmipci *chip = snd_kcontrol_chip(kcontrol);
int i, change;
unsigned int val;
val = 0;
spin_lock_irq(&chip->reg_lock);
for (i = 0; i < 4; i++)
val |= (unsigned int)ucontrol->value.iec958.status[i] << (i * 8);
change = val != chip->dig_status;
chip->dig_status = val;
spin_unlock_irq(&chip->reg_lock);
return change;
}
static struct snd_kcontrol_new snd_cmipci_spdif_default __devinitdata =
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
.info = snd_cmipci_spdif_default_info,
.get = snd_cmipci_spdif_default_get,
.put = snd_cmipci_spdif_default_put
};
static int snd_cmipci_spdif_mask_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_cmipci_spdif_mask_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.iec958.status[0] = 0xff;