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linux/sound/pci/es1968.c
Jesper Juhl 77933d7276 [PATCH] clean up inline static vs static inline 
`gcc -W' likes to complain if the static keyword is not at the beginning of
the declaration.  This patch fixes all remaining occurrences of "inline
static" up with "static inline" in the entire kernel tree (140 occurrences in
47 files).

While making this change I came across a few lines with trailing whitespace
that I also fixed up, I have also added or removed a blank line or two here
and there, but there are no functional changes in the patch.

Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-27 16:26:20 -07:00

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/*
* Driver for ESS Maestro 1/2/2E Sound Card (started 21.8.99)
* Copyright (c) by Matze Braun <MatzeBraun@gmx.de>.
* Takashi Iwai <tiwai@suse.de>
*
* Most of the driver code comes from Zach Brown(zab@redhat.com)
* Alan Cox OSS Driver
* Rewritted from card-es1938.c source.
*
* TODO:
* Perhaps Synth
*
* 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
*
*
* Notes from Zach Brown about the driver code
*
* Hardware Description
*
* A working Maestro setup contains the Maestro chip wired to a
* codec or 2. In the Maestro we have the APUs, the ASSP, and the
* Wavecache. The APUs can be though of as virtual audio routing
* channels. They can take data from a number of sources and perform
* basic encodings of the data. The wavecache is a storehouse for
* PCM data. Typically it deals with PCI and interracts with the
* APUs. The ASSP is a wacky DSP like device that ESS is loth
* to release docs on. Thankfully it isn't required on the Maestro
* until you start doing insane things like FM emulation and surround
* encoding. The codecs are almost always AC-97 compliant codecs,
* but it appears that early Maestros may have had PT101 (an ESS
* part?) wired to them. The only real difference in the Maestro
* families is external goop like docking capability, memory for
* the ASSP, and initialization differences.
*
* Driver Operation
*
* We only drive the APU/Wavecache as typical DACs and drive the
* mixers in the codecs. There are 64 APUs. We assign 6 to each
* /dev/dsp? device. 2 channels for output, and 4 channels for
* input.
*
* Each APU can do a number of things, but we only really use
* 3 basic functions. For playback we use them to convert PCM
* data fetched over PCI by the wavecahche into analog data that
* is handed to the codec. One APU for mono, and a pair for stereo.
* When in stereo, the combination of smarts in the APU and Wavecache
* decide which wavecache gets the left or right channel.
*
* For record we still use the old overly mono system. For each in
* coming channel the data comes in from the codec, through a 'input'
* APU, through another rate converter APU, and then into memory via
* the wavecache and PCI. If its stereo, we mash it back into LRLR in
* software. The pass between the 2 APUs is supposedly what requires us
* to have a 512 byte buffer sitting around in wavecache/memory.
*
* The wavecache makes our life even more fun. First off, it can
* only address the first 28 bits of PCI address space, making it
* useless on quite a few architectures. Secondly, its insane.
* It claims to fetch from 4 regions of PCI space, each 4 meg in length.
* But that doesn't really work. You can only use 1 region. So all our
* allocations have to be in 4meg of each other. Booo. Hiss.
* So we have a module parameter, dsps_order, that is the order of
* the number of dsps to provide. All their buffer space is allocated
* on open time. The sonicvibes OSS routines we inherited really want
* power of 2 buffers, so we have all those next to each other, then
* 512 byte regions for the recording wavecaches. This ends up
* wasting quite a bit of memory. The only fixes I can see would be
* getting a kernel allocator that could work in zones, or figuring out
* just how to coerce the WP into doing what we want.
*
* The indirection of the various registers means we have to spinlock
* nearly all register accesses. We have the main register indirection
* like the wave cache, maestro registers, etc. Then we have beasts
* like the APU interface that is indirect registers gotten at through
* the main maestro indirection. Ouch. We spinlock around the actual
* ports on a per card basis. This means spinlock activity at each IO
* operation, but the only IO operation clusters are in non critical
* paths and it makes the code far easier to follow. Interrupts are
* blocked while holding the locks because the int handler has to
* get at some of them :(. The mixer interface doesn't, however.
* We also have an OSS state lock that is thrown around in a few
* places.
*/
#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 <sound/core.h>
#include <sound/pcm.h>
#include <sound/mpu401.h>
#include <sound/ac97_codec.h>
#include <sound/initval.h>
#define CARD_NAME "ESS Maestro1/2"
#define DRIVER_NAME "ES1968"
MODULE_DESCRIPTION("ESS Maestro");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{ESS,Maestro 2e},"
"{ESS,Maestro 2},"
"{ESS,Maestro 1},"
"{TerraTec,DMX}}");
#if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
#define SUPPORT_JOYSTICK 1
#endif
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 1-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
static int total_bufsize[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1024 };
static int pcm_substreams_p[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 4 };
static int pcm_substreams_c[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1 };
static int clock[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0};
static int use_pm[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
static int enable_mpu[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
#ifdef SUPPORT_JOYSTICK
static int joystick[SNDRV_CARDS];
#endif
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
module_param_array(total_bufsize, int, NULL, 0444);
MODULE_PARM_DESC(total_bufsize, "Total buffer size in kB.");
module_param_array(pcm_substreams_p, int, NULL, 0444);
MODULE_PARM_DESC(pcm_substreams_p, "PCM Playback substreams for " CARD_NAME " soundcard.");
module_param_array(pcm_substreams_c, int, NULL, 0444);
MODULE_PARM_DESC(pcm_substreams_c, "PCM Capture substreams for " CARD_NAME " soundcard.");
module_param_array(clock, int, NULL, 0444);
MODULE_PARM_DESC(clock, "Clock on " CARD_NAME " soundcard. (0 = auto-detect)");
module_param_array(use_pm, int, NULL, 0444);
MODULE_PARM_DESC(use_pm, "Toggle power-management. (0 = off, 1 = on, 2 = auto)");
module_param_array(enable_mpu, int, NULL, 0444);
MODULE_PARM_DESC(enable_mpu, "Enable MPU401. (0 = off, 1 = on, 2 = auto)");
#ifdef SUPPORT_JOYSTICK
module_param_array(joystick, bool, NULL, 0444);
MODULE_PARM_DESC(joystick, "Enable joystick.");
#endif
/* PCI Dev ID's */
#ifndef PCI_VENDOR_ID_ESS
#define PCI_VENDOR_ID_ESS 0x125D
#endif
#define PCI_VENDOR_ID_ESS_OLD 0x1285 /* Platform Tech, the people the ESS
was bought form */
#ifndef PCI_DEVICE_ID_ESS_M2E
#define PCI_DEVICE_ID_ESS_M2E 0x1978
#endif
#ifndef PCI_DEVICE_ID_ESS_M2
#define PCI_DEVICE_ID_ESS_M2 0x1968
#endif
#ifndef PCI_DEVICE_ID_ESS_M1
#define PCI_DEVICE_ID_ESS_M1 0x0100
#endif
#define NR_APUS 64
#define NR_APU_REGS 16
/* NEC Versas ? */
#define NEC_VERSA_SUBID1 0x80581033
#define NEC_VERSA_SUBID2 0x803c1033
/* Mode Flags */
#define ESS_FMT_STEREO 0x01
#define ESS_FMT_16BIT 0x02
#define DAC_RUNNING 1
#define ADC_RUNNING 2
/* Values for the ESM_LEGACY_AUDIO_CONTROL */
#define ESS_ENABLE_AUDIO 0x8000
#define ESS_ENABLE_SERIAL_IRQ 0x4000
#define IO_ADRESS_ALIAS 0x0020
#define MPU401_IRQ_ENABLE 0x0010
#define MPU401_IO_ENABLE 0x0008
#define GAME_IO_ENABLE 0x0004
#define FM_IO_ENABLE 0x0002
#define SB_IO_ENABLE 0x0001
/* Values for the ESM_CONFIG_A */
#define PIC_SNOOP1 0x4000
#define PIC_SNOOP2 0x2000
#define SAFEGUARD 0x0800
#define DMA_CLEAR 0x0700
#define DMA_DDMA 0x0000
#define DMA_TDMA 0x0100
#define DMA_PCPCI 0x0200
#define POST_WRITE 0x0080
#define ISA_TIMING 0x0040
#define SWAP_LR 0x0020
#define SUBTR_DECODE 0x0002
/* Values for the ESM_CONFIG_B */
#define SPDIF_CONFB 0x0100
#define HWV_CONFB 0x0080
#define DEBOUNCE 0x0040
#define GPIO_CONFB 0x0020
#define CHI_CONFB 0x0010
#define IDMA_CONFB 0x0008 /*undoc */
#define MIDI_FIX 0x0004 /*undoc */
#define IRQ_TO_ISA 0x0001 /*undoc */
/* Values for Ring Bus Control B */
#define RINGB_2CODEC_ID_MASK 0x0003
#define RINGB_DIS_VALIDATION 0x0008
#define RINGB_EN_SPDIF 0x0010
#define RINGB_EN_2CODEC 0x0020
#define RINGB_SING_BIT_DUAL 0x0040
/* ****Port Adresses**** */
/* Write & Read */
#define ESM_INDEX 0x02
#define ESM_DATA 0x00
/* AC97 + RingBus */
#define ESM_AC97_INDEX 0x30
#define ESM_AC97_DATA 0x32
#define ESM_RING_BUS_DEST 0x34
#define ESM_RING_BUS_CONTR_A 0x36
#define ESM_RING_BUS_CONTR_B 0x38
#define ESM_RING_BUS_SDO 0x3A
/* WaveCache*/
#define WC_INDEX 0x10
#define WC_DATA 0x12
#define WC_CONTROL 0x14
/* ASSP*/
#define ASSP_INDEX 0x80
#define ASSP_MEMORY 0x82
#define ASSP_DATA 0x84
#define ASSP_CONTROL_A 0xA2
#define ASSP_CONTROL_B 0xA4
#define ASSP_CONTROL_C 0xA6
#define ASSP_HOSTW_INDEX 0xA8
#define ASSP_HOSTW_DATA 0xAA
#define ASSP_HOSTW_IRQ 0xAC
/* Midi */
#define ESM_MPU401_PORT 0x98
/* Others */
#define ESM_PORT_HOST_IRQ 0x18
#define IDR0_DATA_PORT 0x00
#define IDR1_CRAM_POINTER 0x01
#define IDR2_CRAM_DATA 0x02
#define IDR3_WAVE_DATA 0x03
#define IDR4_WAVE_PTR_LOW 0x04
#define IDR5_WAVE_PTR_HI 0x05
#define IDR6_TIMER_CTRL 0x06
#define IDR7_WAVE_ROMRAM 0x07
#define WRITEABLE_MAP 0xEFFFFF
#define READABLE_MAP 0x64003F
/* PCI Register */
#define ESM_LEGACY_AUDIO_CONTROL 0x40
#define ESM_ACPI_COMMAND 0x54
#define ESM_CONFIG_A 0x50
#define ESM_CONFIG_B 0x52
#define ESM_DDMA 0x60
/* Bob Bits */
#define ESM_BOB_ENABLE 0x0001
#define ESM_BOB_START 0x0001
/* Host IRQ Control Bits */
#define ESM_RESET_MAESTRO 0x8000
#define ESM_RESET_DIRECTSOUND 0x4000
#define ESM_HIRQ_ClkRun 0x0100
#define ESM_HIRQ_HW_VOLUME 0x0040
#define ESM_HIRQ_HARPO 0x0030 /* What's that? */
#define ESM_HIRQ_ASSP 0x0010
#define ESM_HIRQ_DSIE 0x0004
#define ESM_HIRQ_MPU401 0x0002
#define ESM_HIRQ_SB 0x0001
/* Host IRQ Status Bits */
#define ESM_MPU401_IRQ 0x02
#define ESM_SB_IRQ 0x01
#define ESM_SOUND_IRQ 0x04
#define ESM_ASSP_IRQ 0x10
#define ESM_HWVOL_IRQ 0x40
#define ESS_SYSCLK 50000000
#define ESM_BOB_FREQ 200
#define ESM_BOB_FREQ_MAX 800
#define ESM_FREQ_ESM1 (49152000L / 1024L) /* default rate 48000 */
#define ESM_FREQ_ESM2 (50000000L / 1024L)
/* APU Modes: reg 0x00, bit 4-7 */
#define ESM_APU_MODE_SHIFT 4
#define ESM_APU_MODE_MASK (0xf << 4)
#define ESM_APU_OFF 0x00
#define ESM_APU_16BITLINEAR 0x01 /* 16-Bit Linear Sample Player */
#define ESM_APU_16BITSTEREO 0x02 /* 16-Bit Stereo Sample Player */
#define ESM_APU_8BITLINEAR 0x03 /* 8-Bit Linear Sample Player */
#define ESM_APU_8BITSTEREO 0x04 /* 8-Bit Stereo Sample Player */
#define ESM_APU_8BITDIFF 0x05 /* 8-Bit Differential Sample Playrer */
#define ESM_APU_DIGITALDELAY 0x06 /* Digital Delay Line */
#define ESM_APU_DUALTAP 0x07 /* Dual Tap Reader */
#define ESM_APU_CORRELATOR 0x08 /* Correlator */
#define ESM_APU_INPUTMIXER 0x09 /* Input Mixer */
#define ESM_APU_WAVETABLE 0x0A /* Wave Table Mode */
#define ESM_APU_SRCONVERTOR 0x0B /* Sample Rate Convertor */
#define ESM_APU_16BITPINGPONG 0x0C /* 16-Bit Ping-Pong Sample Player */
#define ESM_APU_RESERVED1 0x0D /* Reserved 1 */
#define ESM_APU_RESERVED2 0x0E /* Reserved 2 */
#define ESM_APU_RESERVED3 0x0F /* Reserved 3 */
/* reg 0x00 */
#define ESM_APU_FILTER_Q_SHIFT 0
#define ESM_APU_FILTER_Q_MASK (3 << 0)
/* APU Filtey Q Control */
#define ESM_APU_FILTER_LESSQ 0x00
#define ESM_APU_FILTER_MOREQ 0x03
#define ESM_APU_FILTER_TYPE_SHIFT 2
#define ESM_APU_FILTER_TYPE_MASK (3 << 2)
#define ESM_APU_ENV_TYPE_SHIFT 8
#define ESM_APU_ENV_TYPE_MASK (3 << 8)
#define ESM_APU_ENV_STATE_SHIFT 10
#define ESM_APU_ENV_STATE_MASK (3 << 10)
#define ESM_APU_END_CURVE (1 << 12)
#define ESM_APU_INT_ON_LOOP (1 << 13)
#define ESM_APU_DMA_ENABLE (1 << 14)
/* reg 0x02 */
#define ESM_APU_SUBMIX_GROUP_SHIRT 0
#define ESM_APU_SUBMIX_GROUP_MASK (7 << 0)
#define ESM_APU_SUBMIX_MODE (1 << 3)
#define ESM_APU_6dB (1 << 4)
#define ESM_APU_DUAL_EFFECT (1 << 5)
#define ESM_APU_EFFECT_CHANNELS_SHIFT 6
#define ESM_APU_EFFECT_CHANNELS_MASK (3 << 6)
/* reg 0x03 */
#define ESM_APU_STEP_SIZE_MASK 0x0fff
/* reg 0x04 */
#define ESM_APU_PHASE_SHIFT 0
#define ESM_APU_PHASE_MASK (0xff << 0)
#define ESM_APU_WAVE64K_PAGE_SHIFT 8 /* most 8bit of wave start offset */
#define ESM_APU_WAVE64K_PAGE_MASK (0xff << 8)
/* reg 0x05 - wave start offset */
/* reg 0x06 - wave end offset */
/* reg 0x07 - wave loop length */
/* reg 0x08 */
#define ESM_APU_EFFECT_GAIN_SHIFT 0
#define ESM_APU_EFFECT_GAIN_MASK (0xff << 0)
#define ESM_APU_TREMOLO_DEPTH_SHIFT 8
#define ESM_APU_TREMOLO_DEPTH_MASK (0xf << 8)
#define ESM_APU_TREMOLO_RATE_SHIFT 12
#define ESM_APU_TREMOLO_RATE_MASK (0xf << 12)
/* reg 0x09 */
/* bit 0-7 amplitude dest? */
#define ESM_APU_AMPLITUDE_NOW_SHIFT 8
#define ESM_APU_AMPLITUDE_NOW_MASK (0xff << 8)
/* reg 0x0a */
#define ESM_APU_POLAR_PAN_SHIFT 0
#define ESM_APU_POLAR_PAN_MASK (0x3f << 0)
/* Polar Pan Control */
#define ESM_APU_PAN_CENTER_CIRCLE 0x00
#define ESM_APU_PAN_MIDDLE_RADIUS 0x01
#define ESM_APU_PAN_OUTSIDE_RADIUS 0x02
#define ESM_APU_FILTER_TUNING_SHIFT 8
#define ESM_APU_FILTER_TUNING_MASK (0xff << 8)
/* reg 0x0b */
#define ESM_APU_DATA_SRC_A_SHIFT 0
#define ESM_APU_DATA_SRC_A_MASK (0x7f << 0)
#define ESM_APU_INV_POL_A (1 << 7)
#define ESM_APU_DATA_SRC_B_SHIFT 8
#define ESM_APU_DATA_SRC_B_MASK (0x7f << 8)
#define ESM_APU_INV_POL_B (1 << 15)
#define ESM_APU_VIBRATO_RATE_SHIFT 0
#define ESM_APU_VIBRATO_RATE_MASK (0xf << 0)
#define ESM_APU_VIBRATO_DEPTH_SHIFT 4
#define ESM_APU_VIBRATO_DEPTH_MASK (0xf << 4)
#define ESM_APU_VIBRATO_PHASE_SHIFT 8
#define ESM_APU_VIBRATO_PHASE_MASK (0xff << 8)
/* reg 0x0c */
#define ESM_APU_RADIUS_SELECT (1 << 6)
/* APU Filter Control */
#define ESM_APU_FILTER_2POLE_LOPASS 0x00
#define ESM_APU_FILTER_2POLE_BANDPASS 0x01
#define ESM_APU_FILTER_2POLE_HIPASS 0x02
#define ESM_APU_FILTER_1POLE_LOPASS 0x03
#define ESM_APU_FILTER_1POLE_HIPASS 0x04
#define ESM_APU_FILTER_OFF 0x05
/* APU ATFP Type */
#define ESM_APU_ATFP_AMPLITUDE 0x00
#define ESM_APU_ATFP_TREMELO 0x01
#define ESM_APU_ATFP_FILTER 0x02
#define ESM_APU_ATFP_PAN 0x03
/* APU ATFP Flags */
#define ESM_APU_ATFP_FLG_OFF 0x00
#define ESM_APU_ATFP_FLG_WAIT 0x01
#define ESM_APU_ATFP_FLG_DONE 0x02
#define ESM_APU_ATFP_FLG_INPROCESS 0x03
/* capture mixing buffer size */
#define ESM_MEM_ALIGN 0x1000
#define ESM_MIXBUF_SIZE 0x400
#define ESM_MODE_PLAY 0
#define ESM_MODE_CAPTURE 1
/* acpi states */
enum {
ACPI_D0=0,
ACPI_D1,
ACPI_D2,
ACPI_D3
};
/* bits in the acpi masks */
#define ACPI_12MHZ ( 1 << 15)
#define ACPI_24MHZ ( 1 << 14)
#define ACPI_978 ( 1 << 13)
#define ACPI_SPDIF ( 1 << 12)
#define ACPI_GLUE ( 1 << 11)
#define ACPI__10 ( 1 << 10) /* reserved */
#define ACPI_PCIINT ( 1 << 9)
#define ACPI_HV ( 1 << 8) /* hardware volume */
#define ACPI_GPIO ( 1 << 7)
#define ACPI_ASSP ( 1 << 6)
#define ACPI_SB ( 1 << 5) /* sb emul */
#define ACPI_FM ( 1 << 4) /* fm emul */
#define ACPI_RB ( 1 << 3) /* ringbus / aclink */
#define ACPI_MIDI ( 1 << 2)
#define ACPI_GP ( 1 << 1) /* game port */
#define ACPI_WP ( 1 << 0) /* wave processor */
#define ACPI_ALL (0xffff)
#define ACPI_SLEEP (~(ACPI_SPDIF|ACPI_ASSP|ACPI_SB|ACPI_FM| \
ACPI_MIDI|ACPI_GP|ACPI_WP))
#define ACPI_NONE (ACPI__10)
/* these masks indicate which units we care about at
which states */
static u16 acpi_state_mask[] = {
[ACPI_D0] = ACPI_ALL,
[ACPI_D1] = ACPI_SLEEP,
[ACPI_D2] = ACPI_SLEEP,
[ACPI_D3] = ACPI_NONE
};
typedef struct snd_es1968 es1968_t;
typedef struct snd_esschan esschan_t;
typedef struct snd_esm_memory esm_memory_t;
/* APU use in the driver */
enum snd_enum_apu_type {
ESM_APU_PCM_PLAY,
ESM_APU_PCM_CAPTURE,
ESM_APU_PCM_RATECONV,
ESM_APU_FREE
};
/* chip type */
enum {
TYPE_MAESTRO, TYPE_MAESTRO2, TYPE_MAESTRO2E
};
/* DMA Hack! */
struct snd_esm_memory {
struct snd_dma_buffer buf;
int empty; /* status */
struct list_head list;
};
/* Playback Channel */
struct snd_esschan {
int running;
u8 apu[4];
u8 apu_mode[4];
/* playback/capture pcm buffer */
esm_memory_t *memory;
/* capture mixer buffer */
esm_memory_t *mixbuf;
unsigned int hwptr; /* current hw pointer in bytes */
unsigned int count; /* sample counter in bytes */
unsigned int dma_size; /* total buffer size in bytes */
unsigned int frag_size; /* period size in bytes */
unsigned int wav_shift;
u16 base[4]; /* offset for ptr */
/* stereo/16bit flag */
unsigned char fmt;
int mode; /* playback / capture */
int bob_freq; /* required timer frequency */
snd_pcm_substream_t *substream;
/* linked list */
struct list_head list;
#ifdef CONFIG_PM
u16 wc_map[4];
#endif
};
struct snd_es1968 {
/* Module Config */
int total_bufsize; /* in bytes */
int playback_streams, capture_streams;
unsigned int clock; /* clock */
/* for clock measurement */
unsigned int in_measurement: 1;
unsigned int measure_apu;
unsigned int measure_lastpos;
unsigned int measure_count;
/* buffer */
struct snd_dma_buffer dma;
/* Resources... */
int irq;
unsigned long io_port;
int type;
struct pci_dev *pci;
snd_card_t *card;
snd_pcm_t *pcm;
int do_pm; /* power-management enabled */
/* DMA memory block */
struct list_head buf_list;
/* ALSA Stuff */
ac97_t *ac97;
snd_kcontrol_t *master_switch; /* for h/w volume control */
snd_kcontrol_t *master_volume;
snd_rawmidi_t *rmidi;
spinlock_t reg_lock;
spinlock_t ac97_lock;
struct tasklet_struct hwvol_tq;
unsigned int in_suspend;
/* Maestro Stuff */
u16 maestro_map[32];
int bobclient; /* active timer instancs */
int bob_freq; /* timer frequency */
struct semaphore memory_mutex; /* memory lock */
/* APU states */
unsigned char apu[NR_APUS];
/* active substreams */
struct list_head substream_list;
spinlock_t substream_lock;
#ifdef CONFIG_PM
u16 apu_map[NR_APUS][NR_APU_REGS];
#endif
#ifdef SUPPORT_JOYSTICK
struct gameport *gameport;
#endif
};
static irqreturn_t snd_es1968_interrupt(int irq, void *dev_id, struct pt_regs *regs);
static struct pci_device_id snd_es1968_ids[] = {
/* Maestro 1 */
{ 0x1285, 0x0100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, TYPE_MAESTRO },
/* Maestro 2 */
{ 0x125d, 0x1968, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, TYPE_MAESTRO2 },
/* Maestro 2E */
{ 0x125d, 0x1978, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, TYPE_MAESTRO2E },
{ 0, }
};
MODULE_DEVICE_TABLE(pci, snd_es1968_ids);
/* *********************
* Low Level Funcs! *
*********************/
/* no spinlock */
static void __maestro_write(es1968_t *chip, u16 reg, u16 data)
{
outw(reg, chip->io_port + ESM_INDEX);
outw(data, chip->io_port + ESM_DATA);
chip->maestro_map[reg] = data;
}
static inline void maestro_write(es1968_t *chip, u16 reg, u16 data)
{
unsigned long flags;
spin_lock_irqsave(&chip->reg_lock, flags);
__maestro_write(chip, reg, data);
spin_unlock_irqrestore(&chip->reg_lock, flags);
}
/* no spinlock */
static u16 __maestro_read(es1968_t *chip, u16 reg)
{
if (READABLE_MAP & (1 << reg)) {
outw(reg, chip->io_port + ESM_INDEX);
chip->maestro_map[reg] = inw(chip->io_port + ESM_DATA);
}
return chip->maestro_map[reg];
}
static inline u16 maestro_read(es1968_t *chip, u16 reg)
{
unsigned long flags;
u16 result;
spin_lock_irqsave(&chip->reg_lock, flags);
result = __maestro_read(chip, reg);
spin_unlock_irqrestore(&chip->reg_lock, flags);
return result;
}
#define big_mdelay(msec) do {\
set_current_state(TASK_UNINTERRUPTIBLE);\
schedule_timeout(((msec) * HZ + 999) / 1000);\
} while (0)
/* Wait for the codec bus to be free */
static int snd_es1968_ac97_wait(es1968_t *chip)
{
int timeout = 100000;
while (timeout-- > 0) {
if (!(inb(chip->io_port + ESM_AC97_INDEX) & 1))
return 0;
cond_resched();
}
snd_printd("es1968: ac97 timeout\n");
return 1; /* timeout */
}
static void snd_es1968_ac97_write(ac97_t *ac97, unsigned short reg, unsigned short val)
{
es1968_t *chip = ac97->private_data;
unsigned long flags;
snd_es1968_ac97_wait(chip);
/* Write the bus */
spin_lock_irqsave(&chip->ac97_lock, flags);
outw(val, chip->io_port + ESM_AC97_DATA);
/*msleep(1);*/
outb(reg, chip->io_port + ESM_AC97_INDEX);
/*msleep(1);*/
spin_unlock_irqrestore(&chip->ac97_lock, flags);
}
static unsigned short snd_es1968_ac97_read(ac97_t *ac97, unsigned short reg)
{
u16 data = 0;
es1968_t *chip = ac97->private_data;
unsigned long flags;
snd_es1968_ac97_wait(chip);
spin_lock_irqsave(&chip->ac97_lock, flags);
outb(reg | 0x80, chip->io_port + ESM_AC97_INDEX);
/*msleep(1);*/
if (! snd_es1968_ac97_wait(chip)) {
data = inw(chip->io_port + ESM_AC97_DATA);
/*msleep(1);*/
}
spin_unlock_irqrestore(&chip->ac97_lock, flags);
return data;
}
/* no spinlock */
static void apu_index_set(es1968_t *chip, u16 index)
{
int i;
__maestro_write(chip, IDR1_CRAM_POINTER, index);
for (i = 0; i < 1000; i++)
if (__maestro_read(chip, IDR1_CRAM_POINTER) == index)
return;
snd_printd("es1968: APU register select failed. (Timeout)\n");
}
/* no spinlock */
static void apu_data_set(es1968_t *chip, u16 data)
{
int i;
for (i = 0; i < 1000; i++) {
if (__maestro_read(chip, IDR0_DATA_PORT) == data)
return;
__maestro_write(chip, IDR0_DATA_PORT, data);
}
snd_printd("es1968: APU register set probably failed (Timeout)!\n");
}
/* no spinlock */
static void __apu_set_register(es1968_t *chip, u16 channel, u8 reg, u16 data)
{
snd_assert(channel < NR_APUS, return);
#ifdef CONFIG_PM
chip->apu_map[channel][reg] = data;
#endif
reg |= (channel << 4);
apu_index_set(chip, reg);
apu_data_set(chip, data);
}
static inline void apu_set_register(es1968_t *chip, u16 channel, u8 reg, u16 data)
{
unsigned long flags;
spin_lock_irqsave(&chip->reg_lock, flags);
__apu_set_register(chip, channel, reg, data);
spin_unlock_irqrestore(&chip->reg_lock, flags);
}
static u16 __apu_get_register(es1968_t *chip, u16 channel, u8 reg)
{
snd_assert(channel < NR_APUS, return 0);
reg |= (channel << 4);
apu_index_set(chip, reg);
return __maestro_read(chip, IDR0_DATA_PORT);
}
static inline u16 apu_get_register(es1968_t *chip, u16 channel, u8 reg)
{
unsigned long flags;
u16 v;
spin_lock_irqsave(&chip->reg_lock, flags);
v = __apu_get_register(chip, channel, reg);
spin_unlock_irqrestore(&chip->reg_lock, flags);
return v;
}
#if 0 /* ASSP is not supported */
static void assp_set_register(es1968_t *chip, u32 reg, u32 value)
{
unsigned long flags;
spin_lock_irqsave(&chip->reg_lock, flags);
outl(reg, chip->io_port + ASSP_INDEX);
outl(value, chip->io_port + ASSP_DATA);
spin_unlock_irqrestore(&chip->reg_lock, flags);
}
static u32 assp_get_register(es1968_t *chip, u32 reg)
{
unsigned long flags;
u32 value;
spin_lock_irqsave(&chip->reg_lock, flags);
outl(reg, chip->io_port + ASSP_INDEX);
value = inl(chip->io_port + ASSP_DATA);
spin_unlock_irqrestore(&chip->reg_lock, flags);
return value;
}
#endif
static void wave_set_register(es1968_t *chip, u16 reg, u16 value)
{
unsigned long flags;
spin_lock_irqsave(&chip->reg_lock, flags);
outw(reg, chip->io_port + WC_INDEX);
outw(value, chip->io_port + WC_DATA);
spin_unlock_irqrestore(&chip->reg_lock, flags);
}
static u16 wave_get_register(es1968_t *chip, u16 reg)
{
unsigned long flags;
u16 value;
spin_lock_irqsave(&chip->reg_lock, flags);
outw(reg, chip->io_port + WC_INDEX);
value = inw(chip->io_port + WC_DATA);
spin_unlock_irqrestore(&chip->reg_lock, flags);
return value;
}
/* *******************
* Bob the Timer! *
*******************/
static void snd_es1968_bob_stop(es1968_t *chip)
{
u16 reg;
reg = __maestro_read(chip, 0x11);
reg &= ~ESM_BOB_ENABLE;
__maestro_write(chip, 0x11, reg);
reg = __maestro_read(chip, 0x17);
reg &= ~ESM_BOB_START;
__maestro_write(chip, 0x17, reg);
}
static void snd_es1968_bob_start(es1968_t *chip)
{
int prescale;
int divide;
/* compute ideal interrupt frequency for buffer size & play rate */
/* first, find best prescaler value to match freq */
for (prescale = 5; prescale < 12; prescale++)
if (chip->bob_freq > (ESS_SYSCLK >> (prescale + 9)))
break;
/* next, back off prescaler whilst getting divider into optimum range */
divide = 1;
while ((prescale > 5) && (divide < 32)) {
prescale--;
divide <<= 1;
}
divide >>= 1;
/* now fine-tune the divider for best match */
for (; divide < 31; divide++)
if (chip->bob_freq >
((ESS_SYSCLK >> (prescale + 9)) / (divide + 1))) break;
/* divide = 0 is illegal, but don't let prescale = 4! */
if (divide == 0) {
divide++;
if (prescale > 5)
prescale--;
} else if (divide > 1)
divide--;
__maestro_write(chip, 6, 0x9000 | (prescale << 5) | divide); /* set reg */
/* Now set IDR 11/17 */
__maestro_write(chip, 0x11, __maestro_read(chip, 0x11) | 1);
__maestro_write(chip, 0x17, __maestro_read(chip, 0x17) | 1);
}
/* call with substream spinlock */
static void snd_es1968_bob_inc(es1968_t *chip, int freq)
{
chip->bobclient++;
if (chip->bobclient == 1) {
chip->bob_freq = freq;
snd_es1968_bob_start(chip);
} else if (chip->bob_freq < freq) {
snd_es1968_bob_stop(chip);
chip->bob_freq = freq;
snd_es1968_bob_start(chip);
}
}
/* call with substream spinlock */
static void snd_es1968_bob_dec(es1968_t *chip)
{
chip->bobclient--;
if (chip->bobclient <= 0)
snd_es1968_bob_stop(chip);
else if (chip->bob_freq > ESM_BOB_FREQ) {
/* check reduction of timer frequency */
struct list_head *p;
int max_freq = ESM_BOB_FREQ;
list_for_each(p, &chip->substream_list) {
esschan_t *es = list_entry(p, esschan_t, list);
if (max_freq < es->bob_freq)
max_freq = es->bob_freq;
}
if (max_freq != chip->bob_freq) {
snd_es1968_bob_stop(chip);
chip->bob_freq = max_freq;
snd_es1968_bob_start(chip);
}
}
}
static int
snd_es1968_calc_bob_rate(es1968_t *chip, esschan_t *es,
snd_pcm_runtime_t *runtime)
{
/* we acquire 4 interrupts per period for precise control.. */
int freq = runtime->rate * 4;
if (es->fmt & ESS_FMT_STEREO)
freq <<= 1;
if (es->fmt & ESS_FMT_16BIT)
freq <<= 1;
freq /= es->frag_size;
if (freq < ESM_BOB_FREQ)
freq = ESM_BOB_FREQ;
else if (freq > ESM_BOB_FREQ_MAX)
freq = ESM_BOB_FREQ_MAX;
return freq;
}
/*************
* PCM Part *
*************/
static u32 snd_es1968_compute_rate(es1968_t *chip, u32 freq)
{
u32 rate = (freq << 16) / chip->clock;
#if 0 /* XXX: do we need this? */
if (rate > 0x10000)
rate = 0x10000;
#endif
return rate;
}
/* get current pointer */
static inline unsigned int
snd_es1968_get_dma_ptr(es1968_t *chip, esschan_t *es)
{
unsigned int offset;
offset = apu_get_register(chip, es->apu[0], 5);
offset -= es->base[0];
return (offset & 0xFFFE); /* hardware is in words */
}
static void snd_es1968_apu_set_freq(es1968_t *chip, int apu, int freq)
{
apu_set_register(chip, apu, 2,
(apu_get_register(chip, apu, 2) & 0x00FF) |
((freq & 0xff) << 8) | 0x10);
apu_set_register(chip, apu, 3, freq >> 8);
}
/* spin lock held */
static inline void snd_es1968_trigger_apu(es1968_t *esm, int apu, int mode)
{
/* set the APU mode */
__apu_set_register(esm, apu, 0,
(__apu_get_register(esm, apu, 0) & 0xff0f) |
(mode << 4));
}
static void snd_es1968_pcm_start(es1968_t *chip, esschan_t *es)
{
spin_lock(&chip->reg_lock);
__apu_set_register(chip, es->apu[0], 5, es->base[0]);
snd_es1968_trigger_apu(chip, es->apu[0], es->apu_mode[0]);
if (es->mode == ESM_MODE_CAPTURE) {
__apu_set_register(chip, es->apu[2], 5, es->base[2]);
snd_es1968_trigger_apu(chip, es->apu[2], es->apu_mode[2]);
}
if (es->fmt & ESS_FMT_STEREO) {
__apu_set_register(chip, es->apu[1], 5, es->base[1]);
snd_es1968_trigger_apu(chip, es->apu[1], es->apu_mode[1]);
if (es->mode == ESM_MODE_CAPTURE) {
__apu_set_register(chip, es->apu[3], 5, es->base[3]);
snd_es1968_trigger_apu(chip, es->apu[3], es->apu_mode[3]);
}
}
spin_unlock(&chip->reg_lock);
}
static void snd_es1968_pcm_stop(es1968_t *chip, esschan_t *es)
{
spin_lock(&chip->reg_lock);
snd_es1968_trigger_apu(chip, es->apu[0], 0);
snd_es1968_trigger_apu(chip, es->apu[1], 0);
if (es->mode == ESM_MODE_CAPTURE) {
snd_es1968_trigger_apu(chip, es->apu[2], 0);
snd_es1968_trigger_apu(chip, es->apu[3], 0);
}
spin_unlock(&chip->reg_lock);
}
/* set the wavecache control reg */
static void snd_es1968_program_wavecache(es1968_t *chip, esschan_t *es,
int channel, u32 addr, int capture)
{
u32 tmpval = (addr - 0x10) & 0xFFF8;
if (! capture) {
if (!(es->fmt & ESS_FMT_16BIT))
tmpval |= 4; /* 8bit */
if (es->fmt & ESS_FMT_STEREO)
tmpval |= 2; /* stereo */
}
/* set the wavecache control reg */
wave_set_register(chip, es->apu[channel] << 3, tmpval);
#ifdef CONFIG_PM
es->wc_map[channel] = tmpval;
#endif
}
static void snd_es1968_playback_setup(es1968_t *chip, esschan_t *es,
snd_pcm_runtime_t *runtime)
{
u32 pa;
int high_apu = 0;
int channel, apu;
int i, size;
unsigned long flags;
u32 freq;
size = es->dma_size >> es->wav_shift;
if (es->fmt & ESS_FMT_STEREO)
high_apu++;
for (channel = 0; channel <= high_apu; channel++) {
apu = es->apu[channel];
snd_es1968_program_wavecache(chip, es, channel, es->memory->buf.addr, 0);
/* Offset to PCMBAR */
pa = es->memory->buf.addr;
pa -= chip->dma.addr;
pa >>= 1; /* words */
pa |= 0x00400000; /* System RAM (Bit 22) */
if (es->fmt & ESS_FMT_STEREO) {
/* Enable stereo */
if (channel)
pa |= 0x00800000; /* (Bit 23) */
if (es->fmt & ESS_FMT_16BIT)
pa >>= 1;
}
/* base offset of dma calcs when reading the pointer
on this left one */
es->base[channel] = pa & 0xFFFF;
for (i = 0; i < 16; i++)
apu_set_register(chip, apu, i, 0x0000);
/* Load the buffer into the wave engine */
apu_set_register(chip, apu, 4, ((pa >> 16) & 0xFF) << 8);
apu_set_register(chip, apu, 5, pa & 0xFFFF);
apu_set_register(chip, apu, 6, (pa + size) & 0xFFFF);
/* setting loop == sample len */
apu_set_register(chip, apu, 7, size);
/* clear effects/env.. */
apu_set_register(chip, apu, 8, 0x0000);
/* set amp now to 0xd0 (?), low byte is 'amplitude dest'? */
apu_set_register(chip, apu, 9, 0xD000);
/* clear routing stuff */
apu_set_register(chip, apu, 11, 0x0000);
/* dma on, no envelopes, filter to all 1s) */
apu_set_register(chip, apu, 0, 0x400F);
if (es->fmt & ESS_FMT_16BIT)
es->apu_mode[channel] = ESM_APU_16BITLINEAR;
else
es->apu_mode[channel] = ESM_APU_8BITLINEAR;
if (es->fmt & ESS_FMT_STEREO) {
/* set panning: left or right */
/* Check: different panning. On my Canyon 3D Chipset the
Channels are swapped. I don't know, about the output
to the SPDif Link. Perhaps you have to change this
and not the APU Regs 4-5. */
apu_set_register(chip, apu, 10,
0x8F00 | (channel ? 0 : 0x10));
es->apu_mode[channel] += 1; /* stereo */
} else
apu_set_register(chip, apu, 10, 0x8F08);
}
spin_lock_irqsave(&chip->reg_lock, flags);
/* clear WP interrupts */
outw(1, chip->io_port + 0x04);
/* enable WP ints */
outw(inw(chip->io_port + ESM_PORT_HOST_IRQ) | ESM_HIRQ_DSIE, chip->io_port + ESM_PORT_HOST_IRQ);
spin_unlock_irqrestore(&chip->reg_lock, flags);
freq = runtime->rate;
/* set frequency */
if (freq > 48000)
freq = 48000;
if (freq < 4000)
freq = 4000;
/* hmmm.. */
if (!(es->fmt & ESS_FMT_16BIT) && !(es->fmt & ESS_FMT_STEREO))
freq >>= 1;
freq = snd_es1968_compute_rate(chip, freq);
/* Load the frequency, turn on 6dB */
snd_es1968_apu_set_freq(chip, es->apu[0], freq);
snd_es1968_apu_set_freq(chip, es->apu[1], freq);
}
static void init_capture_apu(es1968_t *chip, esschan_t *es, int channel,
unsigned int pa, unsigned int bsize,
int mode, int route)
{
int i, apu = es->apu[channel];
es->apu_mode[channel] = mode;
/* set the wavecache control reg */
snd_es1968_program_wavecache(chip, es, channel, pa, 1);
/* Offset to PCMBAR */
pa -= chip->dma.addr;
pa >>= 1; /* words */
/* base offset of dma calcs when reading the pointer
on this left one */
es->base[channel] = pa & 0xFFFF;
pa |= 0x00400000; /* bit 22 -> System RAM */
/* Begin loading the APU */
for (i = 0; i < 16; i++)
apu_set_register(chip, apu, i, 0x0000);
/* need to enable subgroups.. and we should probably
have different groups for different /dev/dsps.. */
apu_set_register(chip, apu, 2, 0x8);
/* Load the buffer into the wave engine */
apu_set_register(chip, apu, 4, ((pa >> 16) & 0xFF) << 8);
apu_set_register(chip, apu, 5, pa & 0xFFFF);
apu_set_register(chip, apu, 6, (pa + bsize) & 0xFFFF);
apu_set_register(chip, apu, 7, bsize);
/* clear effects/env.. */
apu_set_register(chip, apu, 8, 0x00F0);
/* amplitude now? sure. why not. */
apu_set_register(chip, apu, 9, 0x0000);
/* set filter tune, radius, polar pan */
apu_set_register(chip, apu, 10, 0x8F08);
/* route input */
apu_set_register(chip, apu, 11, route);
/* dma on, no envelopes, filter to all 1s) */
apu_set_register(chip, apu, 0, 0x400F);
}
static void snd_es1968_capture_setup(es1968_t *chip, esschan_t *es,
snd_pcm_runtime_t *runtime)
{
int size;
u32 freq;
unsigned long flags;
size = es->dma_size >> es->wav_shift;
/* APU assignments:
0 = mono/left SRC
1 = right SRC
2 = mono/left Input Mixer
3 = right Input Mixer
*/
/* data seems to flow from the codec, through an apu into
the 'mixbuf' bit of page, then through the SRC apu
and out to the real 'buffer'. ok. sure. */
/* input mixer (left/mono) */
/* parallel in crap, see maestro reg 0xC [8-11] */
init_capture_apu(chip, es, 2,
es->mixbuf->buf.addr, ESM_MIXBUF_SIZE/4, /* in words */
ESM_APU_INPUTMIXER, 0x14);
/* SRC (left/mono); get input from inputing apu */
init_capture_apu(chip, es, 0, es->memory->buf.addr, size,
ESM_APU_SRCONVERTOR, es->apu[2]);
if (es->fmt & ESS_FMT_STEREO) {
/* input mixer (right) */
init_capture_apu(chip, es, 3,
es->mixbuf->buf.addr + ESM_MIXBUF_SIZE/2,
ESM_MIXBUF_SIZE/4, /* in words */
ESM_APU_INPUTMIXER, 0x15);
/* SRC (right) */
init_capture_apu(chip, es, 1,
es->memory->buf.addr + size*2, size,
ESM_APU_SRCONVERTOR, es->apu[3]);
}
freq = runtime->rate;
/* Sample Rate conversion APUs don't like 0x10000 for their rate */
if (freq > 47999)
freq = 47999;
if (freq < 4000)
freq = 4000;
freq = snd_es1968_compute_rate(chip, freq);
/* Load the frequency, turn on 6dB */
snd_es1968_apu_set_freq(chip, es->apu[0], freq);
snd_es1968_apu_set_freq(chip, es->apu[1], freq);
/* fix mixer rate at 48khz. and its _must_ be 0x10000. */
freq = 0x10000;
snd_es1968_apu_set_freq(chip, es->apu[2], freq);
snd_es1968_apu_set_freq(chip, es->apu[3], freq);
spin_lock_irqsave(&chip->reg_lock, flags);
/* clear WP interrupts */
outw(1, chip->io_port + 0x04);
/* enable WP ints */
outw(inw(chip->io_port + ESM_PORT_HOST_IRQ) | ESM_HIRQ_DSIE, chip->io_port + ESM_PORT_HOST_IRQ);
spin_unlock_irqrestore(&chip->reg_lock, flags);
}
/*******************
* ALSA Interface *
*******************/
static int snd_es1968_pcm_prepare(snd_pcm_substream_t *substream)
{
es1968_t *chip = snd_pcm_substream_chip(substream);
snd_pcm_runtime_t *runtime = substream->runtime;
esschan_t *es = runtime->private_data;
es->dma_size = snd_pcm_lib_buffer_bytes(substream);
es->frag_size = snd_pcm_lib_period_bytes(substream);
es->wav_shift = 1; /* maestro handles always 16bit */
es->fmt = 0;
if (snd_pcm_format_width(runtime->format) == 16)
es->fmt |= ESS_FMT_16BIT;
if (runtime->channels > 1) {
es->fmt |= ESS_FMT_STEREO;
if (es->fmt & ESS_FMT_16BIT) /* 8bit is already word shifted */
es->wav_shift++;
}
es->bob_freq = snd_es1968_calc_bob_rate(chip, es, runtime);
switch (es->mode) {
case ESM_MODE_PLAY:
snd_es1968_playback_setup(chip, es, runtime);
break;
case ESM_MODE_CAPTURE:
snd_es1968_capture_setup(chip, es, runtime);
break;
}
return 0;
}
static int snd_es1968_pcm_trigger(snd_pcm_substream_t *substream, int cmd)
{
es1968_t *chip = snd_pcm_substream_chip(substream);
esschan_t *es = substream->runtime->private_data;
spin_lock(&chip->substream_lock);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
if (es->running)
break;
snd_es1968_bob_inc(chip, es->bob_freq);
es->count = 0;
es->hwptr = 0;
snd_es1968_pcm_start(chip, es);
es->running = 1;
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
if (! es->running)
break;
snd_es1968_pcm_stop(chip, es);
es->running = 0;
snd_es1968_bob_dec(chip);
break;
}
spin_unlock(&chip->substream_lock);
return 0;
}
static snd_pcm_uframes_t snd_es1968_pcm_pointer(snd_pcm_substream_t *substream)
{
es1968_t *chip = snd_pcm_substream_chip(substream);
esschan_t *es = substream->runtime->private_data;
unsigned int ptr;
ptr = snd_es1968_get_dma_ptr(chip, es) << es->wav_shift;
return bytes_to_frames(substream->runtime, ptr % es->dma_size);
}
static snd_pcm_hardware_t snd_es1968_playback = {
.info = (SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
/*SNDRV_PCM_INFO_PAUSE |*/
SNDRV_PCM_INFO_RESUME),
.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 = 65536,
.period_bytes_min = 256,
.period_bytes_max = 65536,
.periods_min = 1,
.periods_max = 1024,
.fifo_size = 0,
};
static snd_pcm_hardware_t snd_es1968_capture = {
.info = (SNDRV_PCM_INFO_NONINTERLEAVED |
SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
/*SNDRV_PCM_INFO_PAUSE |*/
SNDRV_PCM_INFO_RESUME),
.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 = 65536,
.period_bytes_min = 256,
.period_bytes_max = 65536,
.periods_min = 1,
.periods_max = 1024,
.fifo_size = 0,
};
/* *************************
* DMA memory management *
*************************/
/* Because the Maestro can only take addresses relative to the PCM base address
register :( */
static int calc_available_memory_size(es1968_t *chip)
{
struct list_head *p;
int max_size = 0;
down(&chip->memory_mutex);
list_for_each(p, &chip->buf_list) {
esm_memory_t *buf = list_entry(p, esm_memory_t, list);
if (buf->empty && buf->buf.bytes > max_size)
max_size = buf->buf.bytes;
}
up(&chip->memory_mutex);
if (max_size >= 128*1024)
max_size = 127*1024;
return max_size;
}
/* allocate a new memory chunk with the specified size */
static esm_memory_t *snd_es1968_new_memory(es1968_t *chip, int size)
{
esm_memory_t *buf;
struct list_head *p;
size = ((size + ESM_MEM_ALIGN - 1) / ESM_MEM_ALIGN) * ESM_MEM_ALIGN;
down(&chip->memory_mutex);
list_for_each(p, &chip->buf_list) {
buf = list_entry(p, esm_memory_t, list);
if (buf->empty && buf->buf.bytes >= size)
goto __found;
}
up(&chip->memory_mutex);
return NULL;
__found:
if (buf->buf.bytes > size) {
esm_memory_t *chunk = kmalloc(sizeof(*chunk), GFP_KERNEL);
if (chunk == NULL) {
up(&chip->memory_mutex);
return NULL;
}
chunk->buf = buf->buf;
chunk->buf.bytes -= size;
chunk->buf.area += size;
chunk->buf.addr += size;
chunk->empty = 1;
buf->buf.bytes = size;
list_add(&chunk->list, &buf->list);
}
buf->empty = 0;
up(&chip->memory_mutex);
return buf;
}
/* free a memory chunk */
static void snd_es1968_free_memory(es1968_t *chip, esm_memory_t *buf)
{
esm_memory_t *chunk;
down(&chip->memory_mutex);
buf->empty = 1;
if (buf->list.prev != &chip->buf_list) {
chunk = list_entry(buf->list.prev, esm_memory_t, list);
if (chunk->empty) {
chunk->buf.bytes += buf->buf.bytes;
list_del(&buf->list);
kfree(buf);
buf = chunk;
}
}
if (buf->list.next != &chip->buf_list) {
chunk = list_entry(buf->list.next, esm_memory_t, list);
if (chunk->empty) {
buf->buf.bytes += chunk->buf.bytes;
list_del(&chunk->list);
kfree(chunk);
}
}
up(&chip->memory_mutex);
}
static void snd_es1968_free_dmabuf(es1968_t *chip)
{
struct list_head *p;
if (! chip->dma.area)
return;
snd_dma_reserve_buf(&chip->dma, snd_dma_pci_buf_id(chip->pci));
while ((p = chip->buf_list.next) != &chip->buf_list) {
esm_memory_t *chunk = list_entry(p, esm_memory_t, list);
list_del(p);
kfree(chunk);
}
}
static int __devinit
snd_es1968_init_dmabuf(es1968_t *chip)
{
int err;
esm_memory_t *chunk;
chip->dma.dev.type = SNDRV_DMA_TYPE_DEV;
chip->dma.dev.dev = snd_dma_pci_data(chip->pci);
if (! snd_dma_get_reserved_buf(&chip->dma, snd_dma_pci_buf_id(chip->pci))) {
err = snd_dma_alloc_pages_fallback(SNDRV_DMA_TYPE_DEV,
snd_dma_pci_data(chip->pci),
chip->total_bufsize, &chip->dma);
if (err < 0 || ! chip->dma.area) {
snd_printk("es1968: can't allocate dma pages for size %d\n",
chip->total_bufsize);
return -ENOMEM;
}
if ((chip->dma.addr + chip->dma.bytes - 1) & ~((1 << 28) - 1)) {
snd_dma_free_pages(&chip->dma);
snd_printk("es1968: DMA buffer beyond 256MB.\n");
return -ENOMEM;
}
}
INIT_LIST_HEAD(&chip->buf_list);
/* allocate an empty chunk */
chunk = kmalloc(sizeof(*chunk), GFP_KERNEL);
if (chunk == NULL) {
snd_es1968_free_dmabuf(chip);
return -ENOMEM;
}
memset(chip->dma.area, 0, ESM_MEM_ALIGN);
chunk->buf = chip->dma;
chunk->buf.area += ESM_MEM_ALIGN;
chunk->buf.addr += ESM_MEM_ALIGN;
chunk->buf.bytes -= ESM_MEM_ALIGN;
chunk->empty = 1;
list_add(&chunk->list, &chip->buf_list);
return 0;
}
/* setup the dma_areas */
/* buffer is extracted from the pre-allocated memory chunk */
static int snd_es1968_hw_params(snd_pcm_substream_t *substream,
snd_pcm_hw_params_t *hw_params)
{
es1968_t *chip = snd_pcm_substream_chip(substream);
snd_pcm_runtime_t *runtime = substream->runtime;
esschan_t *chan = runtime->private_data;
int size = params_buffer_bytes(hw_params);
if (chan->memory) {
if (chan->memory->buf.bytes >= size) {
runtime->dma_bytes = size;
return 0;
}
snd_es1968_free_memory(chip, chan->memory);
}
chan->memory = snd_es1968_new_memory(chip, size);
if (chan->memory == NULL) {
// snd_printd("cannot allocate dma buffer: size = %d\n", size);
return -ENOMEM;
}
snd_pcm_set_runtime_buffer(substream, &chan->memory->buf);
return 1; /* area was changed */
}
/* remove dma areas if allocated */
static int snd_es1968_hw_free(snd_pcm_substream_t * substream)
{
es1968_t *chip = snd_pcm_substream_chip(substream);
snd_pcm_runtime_t *runtime = substream->runtime;
esschan_t *chan;
if (runtime->private_data == NULL)
return 0;
chan = runtime->private_data;
if (chan->memory) {
snd_es1968_free_memory(chip, chan->memory);
chan->memory = NULL;
}
return 0;
}
/*
* allocate APU pair
*/
static int snd_es1968_alloc_apu_pair(es1968_t *chip, int type)
{
int apu;
for (apu = 0; apu < NR_APUS; apu += 2) {
if (chip->apu[apu] == ESM_APU_FREE &&
chip->apu[apu + 1] == ESM_APU_FREE) {
chip->apu[apu] = chip->apu[apu + 1] = type;
return apu;
}
}
return -EBUSY;
}
/*
* release APU pair
*/
static void snd_es1968_free_apu_pair(es1968_t *chip, int apu)
{
chip->apu[apu] = chip->apu[apu + 1] = ESM_APU_FREE;
}
/******************
* PCM open/close *
******************/
static int snd_es1968_playback_open(snd_pcm_substream_t *substream)
{
es1968_t *chip = snd_pcm_substream_chip(substream);
snd_pcm_runtime_t *runtime = substream->runtime;
esschan_t *es;
int apu1;
/* search 2 APUs */
apu1 = snd_es1968_alloc_apu_pair(chip, ESM_APU_PCM_PLAY);
if (apu1 < 0)
return apu1;
es = kcalloc(1, sizeof(*es), GFP_KERNEL);
if (!es) {
snd_es1968_free_apu_pair(chip, apu1);
return -ENOMEM;
}
es->apu[0] = apu1;
es->apu[1] = apu1 + 1;
es->apu_mode[0] = 0;
es->apu_mode[1] = 0;
es->running = 0;
es->substream = substream;
es->mode = ESM_MODE_PLAY;
runtime->private_data = es;
runtime->hw = snd_es1968_playback;
runtime->hw.buffer_bytes_max = runtime->hw.period_bytes_max =
calc_available_memory_size(chip);
#if 0
snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
1024);
#endif
spin_lock_irq(&chip->substream_lock);
list_add(&es->list, &chip->substream_list);
spin_unlock_irq(&chip->substream_lock);
return 0;
}
static int snd_es1968_capture_open(snd_pcm_substream_t *substream)
{
snd_pcm_runtime_t *runtime = substream->runtime;
es1968_t *chip = snd_pcm_substream_chip(substream);
esschan_t *es;
int apu1, apu2;
apu1 = snd_es1968_alloc_apu_pair(chip, ESM_APU_PCM_CAPTURE);
if (apu1 < 0)
return apu1;
apu2 = snd_es1968_alloc_apu_pair(chip, ESM_APU_PCM_RATECONV);
if (apu2 < 0) {
snd_es1968_free_apu_pair(chip, apu1);
return apu2;
}
es = kcalloc(1, sizeof(*es), GFP_KERNEL);
if (!es) {
snd_es1968_free_apu_pair(chip, apu1);
snd_es1968_free_apu_pair(chip, apu2);
return -ENOMEM;
}
es->apu[0] = apu1;
es->apu[1] = apu1 + 1;
es->apu[2] = apu2;
es->apu[3] = apu2 + 1;
es->apu_mode[0] = 0;
es->apu_mode[1] = 0;
es->apu_mode[2] = 0;
es->apu_mode[3] = 0;
es->running = 0;
es->substream = substream;
es->mode = ESM_MODE_CAPTURE;
/* get mixbuffer */
if ((es->mixbuf = snd_es1968_new_memory(chip, ESM_MIXBUF_SIZE)) == NULL) {
snd_es1968_free_apu_pair(chip, apu1);
snd_es1968_free_apu_pair(chip, apu2);
kfree(es);
return -ENOMEM;
}
memset(es->mixbuf->buf.area, 0, ESM_MIXBUF_SIZE);
runtime->private_data = es;
runtime->hw = snd_es1968_capture;
runtime->hw.buffer_bytes_max = runtime->hw.period_bytes_max =
calc_available_memory_size(chip) - 1024; /* keep MIXBUF size */
#if 0
snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
1024);
#endif
spin_lock_irq(&chip->substream_lock);
list_add(&es->list, &chip->substream_list);
spin_unlock_irq(&chip->substream_lock);
return 0;
}
static int snd_es1968_playback_close(snd_pcm_substream_t * substream)
{
es1968_t *chip = snd_pcm_substream_chip(substream);
esschan_t *es;
if (substream->runtime->private_data == NULL)
return 0;
es = substream->runtime->private_data;
spin_lock_irq(&chip->substream_lock);
list_del(&es->list);
spin_unlock_irq(&chip->substream_lock);
snd_es1968_free_apu_pair(chip, es->apu[0]);
kfree(es);
return 0;
}
static int snd_es1968_capture_close(snd_pcm_substream_t * substream)
{
es1968_t *chip = snd_pcm_substream_chip(substream);
esschan_t *es;
if (substream->runtime->private_data == NULL)
return 0;
es = substream->runtime->private_data;
spin_lock_irq(&chip->substream_lock);
list_del(&es->list);
spin_unlock_irq(&chip->substream_lock);
snd_es1968_free_memory(chip, es->mixbuf);
snd_es1968_free_apu_pair(chip, es->apu[0]);
snd_es1968_free_apu_pair(chip, es->apu[2]);
kfree(es);
return 0;
}
static snd_pcm_ops_t snd_es1968_playback_ops = {
.open = snd_es1968_playback_open,
.close = snd_es1968_playback_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_es1968_hw_params,
.hw_free = snd_es1968_hw_free,
.prepare = snd_es1968_pcm_prepare,
.trigger = snd_es1968_pcm_trigger,
.pointer = snd_es1968_pcm_pointer,
};
static snd_pcm_ops_t snd_es1968_capture_ops = {
.open = snd_es1968_capture_open,
.close = snd_es1968_capture_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_es1968_hw_params,
.hw_free = snd_es1968_hw_free,
.prepare = snd_es1968_pcm_prepare,
.trigger = snd_es1968_pcm_trigger,
.pointer = snd_es1968_pcm_pointer,
};
/*
* measure clock
*/
#define CLOCK_MEASURE_BUFSIZE 16768 /* enough large for a single shot */
static void __devinit es1968_measure_clock(es1968_t *chip)
{
int i, apu;
unsigned int pa, offset, t;
esm_memory_t *memory;
struct timeval start_time, stop_time;
if (chip->clock == 0)
chip->clock = 48000; /* default clock value */
/* search 2 APUs (although one apu is enough) */
if ((apu = snd_es1968_alloc_apu_pair(chip, ESM_APU_PCM_PLAY)) < 0) {
snd_printk("Hmm, cannot find empty APU pair!?\n");
return;
}
if ((memory = snd_es1968_new_memory(chip, CLOCK_MEASURE_BUFSIZE)) == NULL) {
snd_printk("cannot allocate dma buffer - using default clock %d\n", chip->clock);
snd_es1968_free_apu_pair(chip, apu);
return;
}
memset(memory->buf.area, 0, CLOCK_MEASURE_BUFSIZE);
wave_set_register(chip, apu << 3, (memory->buf.addr - 0x10) & 0xfff8);
pa = (unsigned int)((memory->buf.addr - chip->dma.addr) >> 1);
pa |= 0x00400000; /* System RAM (Bit 22) */
/* initialize apu */
for (i = 0; i < 16; i++)
apu_set_register(chip, apu, i, 0x0000);
apu_set_register(chip, apu, 0, 0x400f);
apu_set_register(chip, apu, 4, ((pa >> 16) & 0xff) << 8);
apu_set_register(chip, apu, 5, pa & 0xffff);
apu_set_register(chip, apu, 6, (pa + CLOCK_MEASURE_BUFSIZE/2) & 0xffff);
apu_set_register(chip, apu, 7, CLOCK_MEASURE_BUFSIZE/2);
apu_set_register(chip, apu, 8, 0x0000);
apu_set_register(chip, apu, 9, 0xD000);
apu_set_register(chip, apu, 10, 0x8F08);
apu_set_register(chip, apu, 11, 0x0000);
spin_lock_irq(&chip->reg_lock);
outw(1, chip->io_port + 0x04); /* clear WP interrupts */
outw(inw(chip->io_port + ESM_PORT_HOST_IRQ) | ESM_HIRQ_DSIE, chip->io_port + ESM_PORT_HOST_IRQ); /* enable WP ints */
spin_unlock_irq(&chip->reg_lock);
snd_es1968_apu_set_freq(chip, apu, ((unsigned int)48000 << 16) / chip->clock); /* 48000 Hz */
chip->in_measurement = 1;
chip->measure_apu = apu;
spin_lock_irq(&chip->reg_lock);
snd_es1968_bob_inc(chip, ESM_BOB_FREQ);
__apu_set_register(chip, apu, 5, pa & 0xffff);
snd_es1968_trigger_apu(chip, apu, ESM_APU_16BITLINEAR);
do_gettimeofday(&start_time);
spin_unlock_irq(&chip->reg_lock);
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(HZ / 20); /* 50 msec */
spin_lock_irq(&chip->reg_lock);
offset = __apu_get_register(chip, apu, 5);
do_gettimeofday(&stop_time);
snd_es1968_trigger_apu(chip, apu, 0); /* stop */
snd_es1968_bob_dec(chip);
chip->in_measurement = 0;
spin_unlock_irq(&chip->reg_lock);
/* check the current position */
offset -= (pa & 0xffff);
offset &= 0xfffe;
offset += chip->measure_count * (CLOCK_MEASURE_BUFSIZE/2);
t = stop_time.tv_sec - start_time.tv_sec;
t *= 1000000;
if (stop_time.tv_usec < start_time.tv_usec)
t -= start_time.tv_usec - stop_time.tv_usec;
else
t += stop_time.tv_usec - start_time.tv_usec;
if (t == 0) {
snd_printk("?? calculation error..\n");
} else {
offset *= 1000;
offset = (offset / t) * 1000 + ((offset % t) * 1000) / t;
if (offset < 47500 || offset > 48500) {
if (offset >= 40000 && offset <= 50000)
chip->clock = (chip->clock * offset) / 48000;
}
printk(KERN_INFO "es1968: clocking to %d\n", chip->clock);
}
snd_es1968_free_memory(chip, memory);
snd_es1968_free_apu_pair(chip, apu);
}
/*
*/
static void snd_es1968_pcm_free(snd_pcm_t *pcm)
{
es1968_t *esm = pcm->private_data;
snd_es1968_free_dmabuf(esm);
esm->pcm = NULL;
}
static int __devinit
snd_es1968_pcm(es1968_t *chip, int device)
{
snd_pcm_t *pcm;
int err;
/* get DMA buffer */
if ((err = snd_es1968_init_dmabuf(chip)) < 0)
return err;
/* set PCMBAR */
wave_set_register(chip, 0x01FC, chip->dma.addr >> 12);
wave_set_register(chip, 0x01FD, chip->dma.addr >> 12);
wave_set_register(chip, 0x01FE, chip->dma.addr >> 12);
wave_set_register(chip, 0x01FF, chip->dma.addr >> 12);
if ((err = snd_pcm_new(chip->card, "ESS Maestro", device,
chip->playback_streams,
chip->capture_streams, &pcm)) < 0)
return err;
pcm->private_data = chip;
pcm->private_free = snd_es1968_pcm_free;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_es1968_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_es1968_capture_ops);
pcm->info_flags = 0;
strcpy(pcm->name, "ESS Maestro");
chip->pcm = pcm;
return 0;
}
/*
* update pointer
*/
static void snd_es1968_update_pcm(es1968_t *chip, esschan_t *es)
{
unsigned int hwptr;
unsigned int diff;
snd_pcm_substream_t *subs = es->substream;
if (subs == NULL || !es->running)
return;
hwptr = snd_es1968_get_dma_ptr(chip, es) << es->wav_shift;
hwptr %= es->dma_size;
diff = (es->dma_size + hwptr - es->hwptr) % es->dma_size;
es->hwptr = hwptr;
es->count += diff;
if (es->count > es->frag_size) {
spin_unlock(&chip->substream_lock);
snd_pcm_period_elapsed(subs);
spin_lock(&chip->substream_lock);
es->count %= es->frag_size;
}
}
/*
*/
static void es1968_update_hw_volume(unsigned long private_data)
{
es1968_t *chip = (es1968_t *) private_data;
int x, val;
unsigned long flags;
/* Figure out which volume control button was pushed,
based on differences from the default register
values. */
x = inb(chip->io_port + 0x1c);
/* Reset the volume control registers. */
outb(0x88, chip->io_port + 0x1c);
outb(0x88, chip->io_port + 0x1d);
outb(0x88, chip->io_port + 0x1e);
outb(0x88, chip->io_port + 0x1f);
if (chip->in_suspend)
return;
if (! chip->master_switch || ! chip->master_volume)
return;
/* FIXME: we can't call snd_ac97_* functions since here is in tasklet. */
spin_lock_irqsave(&chip->ac97_lock, flags);
val = chip->ac97->regs[AC97_MASTER];
if (x & 1) {
/* mute */
val ^= 0x8000;
chip->ac97->regs[AC97_MASTER] = val;
outw(val, chip->io_port + ESM_AC97_DATA);
outb(AC97_MASTER, chip->io_port + ESM_AC97_INDEX);
snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
&chip->master_switch->id);
} else {
val &= 0x7fff;
if (((x>>1) & 7) > 4) {
/* volume up */
if ((val & 0xff) > 0)
val--;
if ((val & 0xff00) > 0)
val -= 0x0100;
} else {
/* volume down */
if ((val & 0xff) < 0x1f)
val++;
if ((val & 0xff00) < 0x1f00)
val += 0x0100;
}
chip->ac97->regs[AC97_MASTER] = val;
outw(val, chip->io_port + ESM_AC97_DATA);
outb(AC97_MASTER, chip->io_port + ESM_AC97_INDEX);
snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
&chip->master_volume->id);
}
spin_unlock_irqrestore(&chip->ac97_lock, flags);
}
/*
* interrupt handler
*/
static irqreturn_t snd_es1968_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
es1968_t *chip = dev_id;
u32 event;
if (!(event = inb(chip->io_port + 0x1A)))
return IRQ_NONE;
outw(inw(chip->io_port + 4) & 1, chip->io_port + 4);
if (event & ESM_HWVOL_IRQ)
tasklet_hi_schedule(&chip->hwvol_tq); /* we'll do this later */
/* else ack 'em all, i imagine */
outb(0xFF, chip->io_port + 0x1A);
if ((event & ESM_MPU401_IRQ) && chip->rmidi) {
snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
}
if (event & ESM_SOUND_IRQ) {
struct list_head *p;
spin_lock(&chip->substream_lock);
list_for_each(p, &chip->substream_list) {
esschan_t *es = list_entry(p, esschan_t, list);
if (es->running)
snd_es1968_update_pcm(chip, es);
}
spin_unlock(&chip->substream_lock);
if (chip->in_measurement) {
unsigned int curp = __apu_get_register(chip, chip->measure_apu, 5);
if (curp < chip->measure_lastpos)
chip->measure_count++;
chip->measure_lastpos = curp;
}
}
return IRQ_HANDLED;
}
/*
* Mixer stuff
*/
static int __devinit
snd_es1968_mixer(es1968_t *chip)
{
ac97_bus_t *pbus;
ac97_template_t ac97;
snd_ctl_elem_id_t id;
int err;
static ac97_bus_ops_t ops = {
.write = snd_es1968_ac97_write,
.read = snd_es1968_ac97_read,
};
if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0)
return err;
pbus->no_vra = 1; /* ES1968 doesn't need VRA */
memset(&ac97, 0, sizeof(ac97));
ac97.private_data = chip;
if ((err = snd_ac97_mixer(pbus, &ac97, &chip->ac97)) < 0)
return err;
/* attach master switch / volumes for h/w volume control */
memset(&id, 0, sizeof(id));
id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
strcpy(id.name, "Master Playback Switch");
chip->master_switch = snd_ctl_find_id(chip->card, &id);
memset(&id, 0, sizeof(id));
id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
strcpy(id.name, "Master Playback Volume");
chip->master_volume = snd_ctl_find_id(chip->card, &id);
return 0;
}
/*
* reset ac97 codec
*/
static void snd_es1968_ac97_reset(es1968_t *chip)
{
unsigned long ioaddr = chip->io_port;
unsigned short save_ringbus_a;
unsigned short save_68;
unsigned short w;
unsigned int vend;
/* save configuration */
save_ringbus_a = inw(ioaddr + 0x36);
//outw(inw(ioaddr + 0x38) & 0xfffc, ioaddr + 0x38); /* clear second codec id? */
/* set command/status address i/o to 1st codec */
outw(inw(ioaddr + 0x3a) & 0xfffc, ioaddr + 0x3a);
outw(inw(ioaddr + 0x3c) & 0xfffc, ioaddr + 0x3c);
/* disable ac link */
outw(0x0000, ioaddr + 0x36);
save_68 = inw(ioaddr + 0x68);
pci_read_config_word(chip->pci, 0x58, &w); /* something magical with gpio and bus arb. */
pci_read_config_dword(chip->pci, PCI_SUBSYSTEM_VENDOR_ID, &vend);
if (w & 1)
save_68 |= 0x10;
outw(0xfffe, ioaddr + 0x64); /* unmask gpio 0 */
outw(0x0001, ioaddr + 0x68); /* gpio write */
outw(0x0000, ioaddr + 0x60); /* write 0 to gpio 0 */
udelay(20);
outw(0x0001, ioaddr + 0x60); /* write 1 to gpio 1 */
big_mdelay(20);
outw(save_68 | 0x1, ioaddr + 0x68); /* now restore .. */
outw((inw(ioaddr + 0x38) & 0xfffc) | 0x1, ioaddr + 0x38);
outw((inw(ioaddr + 0x3a) & 0xfffc) | 0x1, ioaddr + 0x3a);
outw((inw(ioaddr + 0x3c) & 0xfffc) | 0x1, ioaddr + 0x3c);
/* now the second codec */
/* disable ac link */
outw(0x0000, ioaddr + 0x36);
outw(0xfff7, ioaddr + 0x64); /* unmask gpio 3 */
save_68 = inw(ioaddr + 0x68);
outw(0x0009, ioaddr + 0x68); /* gpio write 0 & 3 ?? */
outw(0x0001, ioaddr + 0x60); /* write 1 to gpio */
udelay(20);
outw(0x0009, ioaddr + 0x60); /* write 9 to gpio */
big_mdelay(500);
//outw(inw(ioaddr + 0x38) & 0xfffc, ioaddr + 0x38);
outw(inw(ioaddr + 0x3a) & 0xfffc, ioaddr + 0x3a);
outw(inw(ioaddr + 0x3c) & 0xfffc, ioaddr + 0x3c);
#if 0 /* the loop here needs to be much better if we want it.. */
snd_printk("trying software reset\n");
/* try and do a software reset */
outb(0x80 | 0x7c, ioaddr + 0x30);
for (w = 0;; w++) {
if ((inw(ioaddr + 0x30) & 1) == 0) {
if (inb(ioaddr + 0x32) != 0)
break;
outb(0x80 | 0x7d, ioaddr + 0x30);
if (((inw(ioaddr + 0x30) & 1) == 0)
&& (inb(ioaddr + 0x32) != 0))
break;
outb(0x80 | 0x7f, ioaddr + 0x30);
if (((inw(ioaddr + 0x30) & 1) == 0)
&& (inb(ioaddr + 0x32) != 0))
break;
}
if (w > 10000) {
outb(inb(ioaddr + 0x37) | 0x08, ioaddr + 0x37); /* do a software reset */
big_mdelay(500); /* oh my.. */
outb(inb(ioaddr + 0x37) & ~0x08,
ioaddr + 0x37);
udelay(1);
outw(0x80, ioaddr + 0x30);
for (w = 0; w < 10000; w++) {
if ((inw(ioaddr + 0x30) & 1) == 0)
break;
}
}
}
#endif
if (vend == NEC_VERSA_SUBID1 || vend == NEC_VERSA_SUBID2) {
/* turn on external amp? */
outw(0xf9ff, ioaddr + 0x64);
outw(inw(ioaddr + 0x68) | 0x600, ioaddr + 0x68);
outw(0x0209, ioaddr + 0x60);
}
/* restore.. */
outw(save_ringbus_a, ioaddr + 0x36);
/* Turn on the 978 docking chip.
First frob the "master output enable" bit,
then set most of the playback volume control registers to max. */
outb(inb(ioaddr+0xc0)|(1<<5), ioaddr+0xc0);
outb(0xff, ioaddr+0xc3);
outb(0xff, ioaddr+0xc4);
outb(0xff, ioaddr+0xc6);
outb(0xff, ioaddr+0xc8);
outb(0x3f, ioaddr+0xcf);
outb(0x3f, ioaddr+0xd0);
}
static void snd_es1968_reset(es1968_t *chip)
{
/* Reset */
outw(ESM_RESET_MAESTRO | ESM_RESET_DIRECTSOUND,
chip->io_port + ESM_PORT_HOST_IRQ);
udelay(10);
outw(0x0000, chip->io_port + ESM_PORT_HOST_IRQ);
udelay(10);
}
/*
* power management
*/
static void snd_es1968_set_acpi(es1968_t *chip, int state)
{
u16 active_mask = acpi_state_mask[state];
pci_set_power_state(chip->pci, state);
/* make sure the units we care about are on
XXX we might want to do this before state flipping? */
pci_write_config_word(chip->pci, 0x54, ~ active_mask);
pci_write_config_word(chip->pci, 0x56, ~ active_mask);
}
/*
* initialize maestro chip
*/
static void snd_es1968_chip_init(es1968_t *chip)
{
struct pci_dev *pci = chip->pci;
int i;
unsigned long iobase = chip->io_port;
u16 w;
u32 n;
/* We used to muck around with pci config space that
* we had no business messing with. We don't know enough
* about the machine to know which DMA mode is appropriate,
* etc. We were guessing wrong on some machines and making
* them unhappy. We now trust in the BIOS to do things right,
* which almost certainly means a new host of problems will
* arise with broken BIOS implementations. screw 'em.
* We're already intolerant of machines that don't assign
* IRQs.
*/
/* do config work at full power */
snd_es1968_set_acpi(chip, ACPI_D0);
/* Config Reg A */
pci_read_config_word(pci, ESM_CONFIG_A, &w);
/* Use TDMA for now. TDMA works on all boards, so while its
* not the most efficient its the simplest. */
w &= ~DMA_CLEAR; /* Clear DMA bits */
w |= DMA_TDMA; /* TDMA on */
w &= ~(PIC_SNOOP1 | PIC_SNOOP2); /* Clear Pic Snoop Mode Bits */
w &= ~SAFEGUARD; /* Safeguard off */
w |= POST_WRITE; /* Posted write */
w |= ISA_TIMING; /* ISA timing on */
/* XXX huh? claims to be reserved.. */
w &= ~SWAP_LR; /* swap left/right
seems to only have effect on SB
Emulation */
w &= ~SUBTR_DECODE; /* Subtractive decode off */
pci_write_config_word(pci, ESM_CONFIG_A, w);
/* Config Reg B */
pci_read_config_word(pci, ESM_CONFIG_B, &w);
w &= ~(1 << 15); /* Turn off internal clock multiplier */
/* XXX how do we know which to use? */
w &= ~(1 << 14); /* External clock */
w &= ~SPDIF_CONFB; /* disable S/PDIF output */
w |= HWV_CONFB; /* HWV on */
w |= DEBOUNCE; /* Debounce off: easier to push the HW buttons */
w &= ~GPIO_CONFB; /* GPIO 4:5 */
w |= CHI_CONFB; /* Disconnect from the CHI. Enabling this made a dell 7500 work. */
w &= ~IDMA_CONFB; /* IDMA off (undocumented) */
w &= ~MIDI_FIX; /* MIDI fix off (undoc) */
w &= ~(1 << 1); /* reserved, always write 0 */
w &= ~IRQ_TO_ISA; /* IRQ to ISA off (undoc) */
pci_write_config_word(pci, ESM_CONFIG_B, w);
/* DDMA off */
pci_read_config_word(pci, ESM_DDMA, &w);
w &= ~(1 << 0);
pci_write_config_word(pci, ESM_DDMA, w);
/*
* Legacy mode
*/
pci_read_config_word(pci, ESM_LEGACY_AUDIO_CONTROL, &w);
w &= ~ESS_ENABLE_AUDIO; /* Disable Legacy Audio */
w &= ~ESS_ENABLE_SERIAL_IRQ; /* Disable SIRQ */
w &= ~(0x1f); /* disable mpu irq/io, game port, fm, SB */
pci_write_config_word(pci, ESM_LEGACY_AUDIO_CONTROL, w);
/* Set up 978 docking control chip. */
pci_read_config_word(pci, 0x58, &w);
w|=1<<2; /* Enable 978. */
w|=1<<3; /* Turn on 978 hardware volume control. */
w&=~(1<<11); /* Turn on 978 mixer volume control. */
pci_write_config_word(pci, 0x58, w);
/* Sound Reset */
snd_es1968_reset(chip);
/*
* Ring Bus Setup
*/
/* setup usual 0x34 stuff.. 0x36 may be chip specific */
outw(0xC090, iobase + ESM_RING_BUS_DEST); /* direct sound, stereo */
udelay(20);
outw(0x3000, iobase + ESM_RING_BUS_CONTR_A); /* enable ringbus/serial */
udelay(20);
/*
* Reset the CODEC
*/
snd_es1968_ac97_reset(chip);
/* Ring Bus Control B */
n = inl(iobase + ESM_RING_BUS_CONTR_B);
n &= ~RINGB_EN_SPDIF; /* SPDIF off */
//w |= RINGB_EN_2CODEC; /* enable 2nd codec */
outl(n, iobase + ESM_RING_BUS_CONTR_B);
/* Set hardware volume control registers to midpoints.
We can tell which button was pushed based on how they change. */
outb(0x88, iobase+0x1c);
outb(0x88, iobase+0x1d);
outb(0x88, iobase+0x1e);
outb(0x88, iobase+0x1f);
/* it appears some maestros (dell 7500) only work if these are set,
regardless of wether we use the assp or not. */
outb(0, iobase + ASSP_CONTROL_B);
outb(3, iobase + ASSP_CONTROL_A); /* M: Reserved bits... */
outb(0, iobase + ASSP_CONTROL_C); /* M: Disable ASSP, ASSP IRQ's and FM Port */
/*
* set up wavecache
*/
for (i = 0; i < 16; i++) {
/* Write 0 into the buffer area 0x1E0->1EF */
outw(0x01E0 + i, iobase + WC_INDEX);
outw(0x0000, iobase + WC_DATA);
/* The 1.10 test program seem to write 0 into the buffer area
* 0x1D0-0x1DF too.*/
outw(0x01D0 + i, iobase + WC_INDEX);
outw(0x0000, iobase + WC_DATA);
}
wave_set_register(chip, IDR7_WAVE_ROMRAM,
(wave_get_register(chip, IDR7_WAVE_ROMRAM) & 0xFF00));
wave_set_register(chip, IDR7_WAVE_ROMRAM,
wave_get_register(chip, IDR7_WAVE_ROMRAM) | 0x100);
wave_set_register(chip, IDR7_WAVE_ROMRAM,
wave_get_register(chip, IDR7_WAVE_ROMRAM) & ~0x200);
wave_set_register(chip, IDR7_WAVE_ROMRAM,
wave_get_register(chip, IDR7_WAVE_ROMRAM) | ~0x400);
maestro_write(chip, IDR2_CRAM_DATA, 0x0000);
/* Now back to the DirectSound stuff */
/* audio serial configuration.. ? */
maestro_write(chip, 0x08, 0xB004);
maestro_write(chip, 0x09, 0x001B);
maestro_write(chip, 0x0A, 0x8000);
maestro_write(chip, 0x0B, 0x3F37);
maestro_write(chip, 0x0C, 0x0098);
/* parallel in, has something to do with recording :) */
maestro_write(chip, 0x0C,
(maestro_read(chip, 0x0C) & ~0xF000) | 0x8000);
/* parallel out */
maestro_write(chip, 0x0C,
(maestro_read(chip, 0x0C) & ~0x0F00) | 0x0500);
maestro_write(chip, 0x0D, 0x7632);
/* Wave cache control on - test off, sg off,
enable, enable extra chans 1Mb */
w = inw(iobase + WC_CONTROL);
w &= ~0xFA00; /* Seems to be reserved? I don't know */
w |= 0xA000; /* reserved... I don't know */
w &= ~0x0200; /* Channels 56,57,58,59 as Extra Play,Rec Channel enable
Seems to crash the Computer if enabled... */
w |= 0x0100; /* Wave Cache Operation Enabled */
w |= 0x0080; /* Channels 60/61 as Placback/Record enabled */
w &= ~0x0060; /* Clear Wavtable Size */
w |= 0x0020; /* Wavetable Size : 1MB */
/* Bit 4 is reserved */
w &= ~0x000C; /* DMA Stuff? I don't understand what the datasheet means */
/* Bit 1 is reserved */
w &= ~0x0001; /* Test Mode off */
outw(w, iobase + WC_CONTROL);
/* Now clear the APU control ram */
for (i = 0; i < NR_APUS; i++) {
for (w = 0; w < NR_APU_REGS; w++)
apu_set_register(chip, i, w, 0);
}
}
/* Enable IRQ's */
static void snd_es1968_start_irq(es1968_t *chip)
{
unsigned short w;
w = ESM_HIRQ_DSIE | ESM_HIRQ_HW_VOLUME;
if (chip->rmidi)
w |= ESM_HIRQ_MPU401;
outw(w, chip->io_port + ESM_PORT_HOST_IRQ);
}
#ifdef CONFIG_PM
/*
* PM support
*/
static int es1968_suspend(snd_card_t *card, pm_message_t state)
{
es1968_t *chip = card->pm_private_data;
if (! chip->do_pm)
return 0;
chip->in_suspend = 1;
snd_pcm_suspend_all(chip->pcm);
snd_ac97_suspend(chip->ac97);
snd_es1968_bob_stop(chip);
snd_es1968_set_acpi(chip, ACPI_D3);
pci_disable_device(chip->pci);
return 0;
}
static int es1968_resume(snd_card_t *card)
{
es1968_t *chip = card->pm_private_data;
struct list_head *p;
if (! chip->do_pm)
return 0;
/* restore all our config */
pci_enable_device(chip->pci);
pci_set_master(chip->pci);
snd_es1968_chip_init(chip);
/* need to restore the base pointers.. */
if (chip->dma.addr) {
/* set PCMBAR */
wave_set_register(chip, 0x01FC, chip->dma.addr >> 12);
}
snd_es1968_start_irq(chip);
/* restore ac97 state */
snd_ac97_resume(chip->ac97);
list_for_each(p, &chip->substream_list) {
esschan_t *es = list_entry(p, esschan_t, list);
switch (es->mode) {
case ESM_MODE_PLAY:
snd_es1968_playback_setup(chip, es, es->substream->runtime);
break;
case ESM_MODE_CAPTURE:
snd_es1968_capture_setup(chip, es, es->substream->runtime);
break;
}
}
/* start timer again */
if (chip->bobclient)
snd_es1968_bob_start(chip);
chip->in_suspend = 0;
return 0;
}
#endif /* CONFIG_PM */
#ifdef SUPPORT_JOYSTICK
#define JOYSTICK_ADDR 0x200
static int __devinit snd_es1968_create_gameport(es1968_t *chip, int dev)
{
struct gameport *gp;
struct resource *r;
u16 val;
if (!joystick[dev])
return -ENODEV;
r = request_region(JOYSTICK_ADDR, 8, "ES1968 gameport");
if (!r)
return -EBUSY;
chip->gameport = gp = gameport_allocate_port();
if (!gp) {
printk(KERN_ERR "es1968: cannot allocate memory for gameport\n");
release_resource(r);
kfree_nocheck(r);
return -ENOMEM;
}
pci_read_config_word(chip->pci, ESM_LEGACY_AUDIO_CONTROL, &val);
pci_write_config_word(chip->pci, ESM_LEGACY_AUDIO_CONTROL, val | 0x04);
gameport_set_name(gp, "ES1968 Gameport");
gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
gameport_set_dev_parent(gp, &chip->pci->dev);
gp->io = JOYSTICK_ADDR;
gameport_set_port_data(gp, r);
gameport_register_port(gp);
return 0;
}
static void snd_es1968_free_gameport(es1968_t *chip)
{
if (chip->gameport) {
struct resource *r = gameport_get_port_data(chip->gameport);
gameport_unregister_port(chip->gameport);
chip->gameport = NULL;
release_resource(r);
kfree_nocheck(r);
}
}
#else
static inline int snd_es1968_create_gameport(es1968_t *chip, int dev) { return -ENOSYS; }
static inline void snd_es1968_free_gameport(es1968_t *chip) { }
#endif
static int snd_es1968_free(es1968_t *chip)
{
if (chip->io_port) {
synchronize_irq(chip->irq);
outw(1, chip->io_port + 0x04); /* clear WP interrupts */
outw(0, chip->io_port + ESM_PORT_HOST_IRQ); /* disable IRQ */
}
if (chip->irq >= 0)
free_irq(chip->irq, (void *)chip);
snd_es1968_free_gameport(chip);
snd_es1968_set_acpi(chip, ACPI_D3);
chip->master_switch = NULL;
chip->master_volume = NULL;
pci_release_regions(chip->pci);
pci_disable_device(chip->pci);
kfree(chip);
return 0;
}
static int snd_es1968_dev_free(snd_device_t *device)
{
es1968_t *chip = device->device_data;
return snd_es1968_free(chip);
}
struct ess_device_list {
unsigned short type; /* chip type */
unsigned short vendor; /* subsystem vendor id */
};
static struct ess_device_list pm_whitelist[] __devinitdata = {
{ TYPE_MAESTRO2E, 0x0e11 }, /* Compaq Armada */
{ TYPE_MAESTRO2E, 0x1028 },
{ TYPE_MAESTRO2E, 0x103c },
{ TYPE_MAESTRO2E, 0x1179 },
{ TYPE_MAESTRO2E, 0x14c0 }, /* HP omnibook 4150 */
{ TYPE_MAESTRO2E, 0x1558 },
};
static struct ess_device_list mpu_blacklist[] __devinitdata = {
{ TYPE_MAESTRO2, 0x125d },
};
static int __devinit snd_es1968_create(snd_card_t * card,
struct pci_dev *pci,
int total_bufsize,
int play_streams,
int capt_streams,
int chip_type,
int do_pm,
es1968_t **chip_ret)
{
static snd_device_ops_t ops = {
.dev_free = snd_es1968_dev_free,
};
es1968_t *chip;
int i, err;
*chip_ret = NULL;
/* enable PCI device */
if ((err = pci_enable_device(pci)) < 0)
return err;
/* check, if we can restrict PCI DMA transfers to 28 bits */
if (pci_set_dma_mask(pci, 0x0fffffff) < 0 ||
pci_set_consistent_dma_mask(pci, 0x0fffffff) < 0) {
snd_printk("architecture does not support 28bit PCI busmaster DMA\n");
pci_disable_device(pci);
return -ENXIO;
}
chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
if (! chip) {
pci_disable_device(pci);
return -ENOMEM;
}
/* Set Vars */
chip->type = chip_type;
spin_lock_init(&chip->reg_lock);
spin_lock_init(&chip->substream_lock);
INIT_LIST_HEAD(&chip->buf_list);
INIT_LIST_HEAD(&chip->substream_list);
spin_lock_init(&chip->ac97_lock);
init_MUTEX(&chip->memory_mutex);
tasklet_init(&chip->hwvol_tq, es1968_update_hw_volume, (unsigned long)chip);
chip->card = card;
chip->pci = pci;
chip->irq = -1;
chip->total_bufsize = total_bufsize; /* in bytes */
chip->playback_streams = play_streams;
chip->capture_streams = capt_streams;
if ((err = pci_request_regions(pci, "ESS Maestro")) < 0) {
kfree(chip);
pci_disable_device(pci);
return err;
}
chip->io_port = pci_resource_start(pci, 0);
if (request_irq(pci->irq, snd_es1968_interrupt, SA_INTERRUPT|SA_SHIRQ,
"ESS Maestro", (void*)chip)) {
snd_printk("unable to grab IRQ %d\n", pci->irq);
snd_es1968_free(chip);
return -EBUSY;
}
chip->irq = pci->irq;
/* Clear Maestro_map */
for (i = 0; i < 32; i++)
chip->maestro_map[i] = 0;
/* Clear Apu Map */
for (i = 0; i < NR_APUS; i++)
chip->apu[i] = ESM_APU_FREE;
/* just to be sure */
pci_set_master(pci);
if (do_pm > 1) {
/* disable power-management if not on the whitelist */
unsigned short vend;
pci_read_config_word(chip->pci, PCI_SUBSYSTEM_VENDOR_ID, &vend);
for (i = 0; i < (int)ARRAY_SIZE(pm_whitelist); i++) {
if (chip->type == pm_whitelist[i].type &&
vend == pm_whitelist[i].vendor) {
do_pm = 1;
break;
}
}
if (do_pm > 1) {
/* not matched; disabling pm */
printk(KERN_INFO "es1968: not attempting power management.\n");
do_pm = 0;
}
}
chip->do_pm = do_pm;
snd_es1968_chip_init(chip);
if (chip->do_pm)
snd_card_set_pm_callback(card, es1968_suspend, es1968_resume, chip);
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
snd_es1968_free(chip);
return err;
}
snd_card_set_dev(card, &pci->dev);
*chip_ret = chip;
return 0;
}
/*
*/
static int __devinit snd_es1968_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
static int dev;
snd_card_t *card;
es1968_t *chip;
unsigned int i;
int err;
if (dev >= SNDRV_CARDS)
return -ENODEV;
if (!enable[dev]) {
dev++;
return -ENOENT;
}
card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
if (!card)
return -ENOMEM;
if (total_bufsize[dev] < 128)
total_bufsize[dev] = 128;
if (total_bufsize[dev] > 4096)
total_bufsize[dev] = 4096;
if ((err = snd_es1968_create(card, pci,
total_bufsize[dev] * 1024, /* in bytes */
pcm_substreams_p[dev],
pcm_substreams_c[dev],
pci_id->driver_data,
use_pm[dev],
&chip)) < 0) {
snd_card_free(card);
return err;
}
switch (chip->type) {
case TYPE_MAESTRO2E:
strcpy(card->driver, "ES1978");
strcpy(card->shortname, "ESS ES1978 (Maestro 2E)");
break;
case TYPE_MAESTRO2:
strcpy(card->driver, "ES1968");
strcpy(card->shortname, "ESS ES1968 (Maestro 2)");
break;
case TYPE_MAESTRO:
strcpy(card->driver, "ESM1");
strcpy(card->shortname, "ESS Maestro 1");
break;
}
if ((err = snd_es1968_pcm(chip, 0)) < 0) {
snd_card_free(card);
return err;
}
if ((err = snd_es1968_mixer(chip)) < 0) {
snd_card_free(card);
return err;
}
if (enable_mpu[dev] == 2) {
/* check the black list */
unsigned short vend;
pci_read_config_word(chip->pci, PCI_SUBSYSTEM_VENDOR_ID, &vend);
for (i = 0; i < ARRAY_SIZE(mpu_blacklist); i++) {
if (chip->type == mpu_blacklist[i].type &&
vend == mpu_blacklist[i].vendor) {
enable_mpu[dev] = 0;
break;
}
}
}
if (enable_mpu[dev]) {
if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401,
chip->io_port + ESM_MPU401_PORT, 1,
chip->irq, 0, &chip->rmidi)) < 0) {
printk(KERN_WARNING "es1968: skipping MPU-401 MIDI support..\n");
}
}
snd_es1968_create_gameport(chip, dev);
snd_es1968_start_irq(chip);
chip->clock = clock[dev];
if (! chip->clock)
es1968_measure_clock(chip);
sprintf(card->longname, "%s at 0x%lx, irq %i",
card->shortname, chip->io_port, chip->irq);
if ((err = snd_card_register(card)) < 0) {
snd_card_free(card);
return err;
}
pci_set_drvdata(pci, card);
dev++;
return 0;
}
static void __devexit snd_es1968_remove(struct pci_dev *pci)
{
snd_card_free(pci_get_drvdata(pci));
pci_set_drvdata(pci, NULL);
}
static struct pci_driver driver = {
.name = "ES1968 (ESS Maestro)",
.id_table = snd_es1968_ids,
.probe = snd_es1968_probe,
.remove = __devexit_p(snd_es1968_remove),
SND_PCI_PM_CALLBACKS
};
static int __init alsa_card_es1968_init(void)
{
return pci_register_driver(&driver);
}
static void __exit alsa_card_es1968_exit(void)
{
pci_unregister_driver(&driver);
}
module_init(alsa_card_es1968_init)
module_exit(alsa_card_es1968_exit)
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