2006-01-09 10:32:44 -07:00
/*
*
* Support for audio capture
* PCI function # 1 of the cx2388x .
*
* ( c ) 2005 , 2006 Ricardo Cerqueira < v4l @ cerqueira . org >
* ( c ) 2005 Mauro Carvalho Chehab < mchehab @ brturbo . com . br >
* Based on a dummy cx88 module by Gerd Knorr < kraxel @ bytesex . org >
* Based on dummy . c by Jaroslav Kysela < perex @ suse . cz >
*
* 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 . , 675 Mass Ave , Cambridge , MA 0213 9 , USA .
*/
# include <linux/module.h>
# include <linux/init.h>
# include <linux/device.h>
# include <linux/interrupt.h>
# include <asm/delay.h>
# include <sound/driver.h>
# include <sound/core.h>
# include <sound/pcm.h>
# include <sound/pcm_params.h>
# include <sound/control.h>
# include <sound/initval.h>
# include "cx88.h"
# include "cx88-reg.h"
# define dprintk(level,fmt, arg...) if (debug >= level) \
printk ( KERN_INFO " %s/1: " fmt , chip - > core - > name , # # arg )
# define dprintk_core(level,fmt, arg...) if (debug >= level) \
printk ( KERN_DEBUG " %s/1: " fmt , chip - > core - > name , # # arg )
/****************************************************************************
Data type declarations - Can be moded to a header file later
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* These can be replaced after done */
# define MIXER_ADDR_LAST MAX_CX88_INPUT
struct cx88_audio_dev {
struct cx88_core * core ;
struct cx88_dmaqueue q ;
/* pci i/o */
struct pci_dev * pci ;
unsigned char pci_rev , pci_lat ;
/* audio controls */
int irq ;
snd_card_t * card ;
spinlock_t reg_lock ;
unsigned int dma_size ;
unsigned int period_size ;
unsigned int num_periods ;
struct videobuf_dmabuf dma_risc ;
int mixer_volume [ MIXER_ADDR_LAST + 1 ] [ 2 ] ;
int capture_source [ MIXER_ADDR_LAST + 1 ] [ 2 ] ;
long int read_count ;
long int read_offset ;
struct cx88_buffer * buf ;
long opened ;
snd_pcm_substream_t * substream ;
} ;
typedef struct cx88_audio_dev snd_cx88_card_t ;
/****************************************************************************
Module global static vars
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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 ] = { 1 , [ 1 . . . ( SNDRV_CARDS - 1 ) ] = 1 } ;
static snd_card_t * snd_cx88_cards [ SNDRV_CARDS ] ;
module_param_array ( enable , bool , NULL , 0444 ) ;
MODULE_PARM_DESC ( enable , " Enable cx88x soundcard. default enabled. " ) ;
module_param_array ( index , int , NULL , 0444 ) ;
MODULE_PARM_DESC ( index , " Index value for cx88x capture interface(s). " ) ;
/****************************************************************************
Module macros
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
MODULE_DESCRIPTION ( " ALSA driver module for cx2388x based TV cards " ) ;
MODULE_AUTHOR ( " Ricardo Cerqueira " ) ;
MODULE_AUTHOR ( " Mauro Carvalho Chehab <mchehab@brturbo.com.br> " ) ;
MODULE_LICENSE ( " GPL " ) ;
MODULE_SUPPORTED_DEVICE ( " {{Conexant,23881}, "
" {{Conexant,23882}, "
" {{Conexant,23883} " ) ;
2006-01-13 09:10:19 -07:00
static unsigned int debug ;
2006-01-09 10:32:44 -07:00
module_param ( debug , int , 0644 ) ;
MODULE_PARM_DESC ( debug , " enable debug messages " ) ;
/****************************************************************************
Module specific funtions
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* BOARD Specific : Sets audio DMA
*/
int _cx88_start_audio_dma ( snd_cx88_card_t * chip )
{
struct cx88_buffer * buf = chip - > buf ;
struct cx88_core * core = chip - > core ;
struct sram_channel * audio_ch = & cx88_sram_channels [ SRAM_CH25 ] ;
dprintk ( 1 , " Starting audio DMA for %i bytes/line and %i (%i) lines at address %08x \n " , buf - > bpl , chip - > num_periods , audio_ch - > fifo_size / buf - > bpl , audio_ch - > fifo_start ) ;
/* setup fifo + format - out channel */
cx88_sram_channel_setup ( chip - > core , & cx88_sram_channels [ SRAM_CH25 ] ,
buf - > bpl , buf - > risc . dma ) ;
/* sets bpl size */
cx_write ( MO_AUDD_LNGTH , buf - > bpl ) ;
/* reset counter */
cx_write ( MO_AUDD_GPCNTRL , GP_COUNT_CONTROL_RESET ) ;
dprintk ( 1 , " Enabling IRQ, setting mask from 0x%x to 0x%x \n " , chip - > core - > pci_irqmask , ( chip - > core - > pci_irqmask | 0x02 ) ) ;
/* enable irqs */
cx_set ( MO_PCI_INTMSK , chip - > core - > pci_irqmask | 0x02 ) ;
/* Enables corresponding bits at AUD_INT_STAT */
cx_write ( MO_AUD_INTMSK ,
( 1 < < 16 ) |
( 1 < < 12 ) |
( 1 < < 4 ) |
( 1 < < 0 )
) ;
/* start dma */
cx_set ( MO_DEV_CNTRL2 , ( 1 < < 5 ) ) ; /* Enables Risc Processor */
cx_set ( MO_AUD_DMACNTRL , 0x11 ) ; /* audio downstream FIFO and RISC enable */
if ( debug )
cx88_sram_channel_dump ( chip - > core , & cx88_sram_channels [ SRAM_CH25 ] ) ;
return 0 ;
}
/*
* BOARD Specific : Resets audio DMA
*/
int _cx88_stop_audio_dma ( snd_cx88_card_t * chip )
{
struct cx88_core * core = chip - > core ;
dprintk ( 1 , " Stopping audio DMA \n " ) ;
/* stop dma */
cx_clear ( MO_AUD_DMACNTRL , 0x11 ) ;
/* disable irqs */
cx_clear ( MO_PCI_INTMSK , 0x02 ) ;
cx_clear ( MO_AUD_INTMSK ,
( 1 < < 16 ) |
( 1 < < 12 ) |
( 1 < < 4 ) |
( 1 < < 0 )
) ;
if ( debug )
cx88_sram_channel_dump ( chip - > core , & cx88_sram_channels [ SRAM_CH25 ] ) ;
return 0 ;
}
# define MAX_IRQ_LOOP 10
/*
* BOARD Specific : IRQ dma bits
*/
static char * cx88_aud_irqs [ 32 ] = {
" dn_risci1 " , " up_risci1 " , " rds_dn_risc1 " , /* 0-2 */
NULL , /* reserved */
" dn_risci2 " , " up_risci2 " , " rds_dn_risc2 " , /* 4-6 */
NULL , /* reserved */
" dnf_of " , " upf_uf " , " rds_dnf_uf " , /* 8-10 */
NULL , /* reserved */
" dn_sync " , " up_sync " , " rds_dn_sync " , /* 12-14 */
NULL , /* reserved */
" opc_err " , " par_err " , " rip_err " , /* 16-18 */
" pci_abort " , " ber_irq " , " mchg_irq " /* 19-21 */
} ;
/*
* BOARD Specific : Threats IRQ audio specific calls
*/
static void cx8801_aud_irq ( snd_cx88_card_t * chip )
{
struct cx88_core * core = chip - > core ;
u32 status , mask ;
u32 count ;
status = cx_read ( MO_AUD_INTSTAT ) ;
mask = cx_read ( MO_AUD_INTMSK ) ;
if ( 0 = = ( status & mask ) ) {
spin_unlock ( & chip - > reg_lock ) ;
return ;
}
cx_write ( MO_AUD_INTSTAT , status ) ;
if ( debug > 1 | | ( status & mask & ~ 0xff ) )
cx88_print_irqbits ( core - > name , " irq aud " ,
cx88_aud_irqs , status , mask ) ;
/* risc op code error */
if ( status & ( 1 < < 16 ) ) {
printk ( KERN_WARNING " %s/0: audio risc op code error \n " , core - > name ) ;
cx_clear ( MO_AUD_DMACNTRL , 0x11 ) ;
cx88_sram_channel_dump ( core , & cx88_sram_channels [ SRAM_CH25 ] ) ;
}
/* risc1 downstream */
if ( status & 0x01 ) {
spin_lock ( & chip - > reg_lock ) ;
count = cx_read ( MO_AUDD_GPCNT ) ;
spin_unlock ( & chip - > reg_lock ) ;
if ( chip - > read_count = = 0 )
chip - > read_count + = chip - > dma_size ;
}
if ( chip - > read_count > = chip - > period_size ) {
dprintk ( 2 , " Elapsing period \n " ) ;
snd_pcm_period_elapsed ( chip - > substream ) ;
}
dprintk ( 3 , " Leaving audio IRQ handler... \n " ) ;
/* FIXME: Any other status should deserve a special handling? */
}
/*
* BOARD Specific : Handles IRQ calls
*/
static irqreturn_t cx8801_irq ( int irq , void * dev_id , struct pt_regs * regs )
{
snd_cx88_card_t * chip = dev_id ;
struct cx88_core * core = chip - > core ;
u32 status ;
int loop , handled = 0 ;
for ( loop = 0 ; loop < MAX_IRQ_LOOP ; loop + + ) {
status = cx_read ( MO_PCI_INTSTAT ) & ( core - > pci_irqmask | 0x02 ) ;
if ( 0 = = status )
goto out ;
dprintk ( 3 , " cx8801_irq \n " ) ;
dprintk ( 3 , " loop: %d/%d \n " , loop , MAX_IRQ_LOOP ) ;
dprintk ( 3 , " status: %d \n " , status ) ;
handled = 1 ;
cx_write ( MO_PCI_INTSTAT , status ) ;
if ( status & 0x02 )
{
dprintk ( 2 , " ALSA IRQ handling \n " ) ;
cx8801_aud_irq ( chip ) ;
}
} ;
if ( MAX_IRQ_LOOP = = loop ) {
dprintk ( 0 , " clearing mask \n " ) ;
dprintk ( 1 , " %s/0: irq loop -- clearing mask \n " ,
core - > name ) ;
cx_clear ( MO_PCI_INTMSK , 0x02 ) ;
}
out :
return IRQ_RETVAL ( handled ) ;
}
static int dsp_buffer_free ( snd_cx88_card_t * chip )
{
BUG_ON ( ! chip - > dma_size ) ;
dprintk ( 2 , " Freeing buffer \n " ) ;
videobuf_dma_pci_unmap ( chip - > pci , & chip - > dma_risc ) ;
videobuf_dma_free ( & chip - > dma_risc ) ;
btcx_riscmem_free ( chip - > pci , & chip - > buf - > risc ) ;
kfree ( chip - > buf ) ;
chip - > dma_size = 0 ;
return 0 ;
}
/****************************************************************************
ALSA PCM Interface
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Digital hardware definition
*/
static snd_pcm_hardware_t snd_cx88_digital_hw = {
. info = SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP_VALID ,
. formats = SNDRV_PCM_FMTBIT_S16_LE ,
. rates = SNDRV_PCM_RATE_48000 ,
. rate_min = 48000 ,
. rate_max = 48000 ,
. channels_min = 1 ,
. channels_max = 2 ,
. buffer_bytes_max = ( 2 * 2048 ) ,
2006-01-15 10:33:02 -07:00
. period_bytes_min = 2048 ,
2006-01-09 10:32:44 -07:00
. period_bytes_max = 2048 ,
. periods_min = 2 ,
2006-01-15 10:33:02 -07:00
. periods_max = 2 ,
2006-01-09 10:32:44 -07:00
} ;
/*
* audio pcm capture runtime free
*/
static void snd_card_cx88_runtime_free ( snd_pcm_runtime_t * runtime )
{
}
/*
* audio pcm capture open callback
*/
static int snd_cx88_pcm_open ( snd_pcm_substream_t * substream )
{
snd_cx88_card_t * chip = snd_pcm_substream_chip ( substream ) ;
snd_pcm_runtime_t * runtime = substream - > runtime ;
int err ;
if ( test_and_set_bit ( 0 , & chip - > opened ) )
return - EBUSY ;
err = snd_pcm_hw_constraint_integer ( runtime , SNDRV_PCM_HW_PARAM_PERIODS ) ;
if ( err < 0 )
goto _error ;
chip - > substream = substream ;
chip - > read_count = 0 ;
chip - > read_offset = 0 ;
runtime - > private_free = snd_card_cx88_runtime_free ;
runtime - > hw = snd_cx88_digital_hw ;
return 0 ;
_error :
dprintk ( 1 , " Error opening PCM! \n " ) ;
clear_bit ( 0 , & chip - > opened ) ;
smp_mb__after_clear_bit ( ) ;
return err ;
}
/*
* audio close callback
*/
static int snd_cx88_close ( snd_pcm_substream_t * substream )
{
snd_cx88_card_t * chip = snd_pcm_substream_chip ( substream ) ;
clear_bit ( 0 , & chip - > opened ) ;
smp_mb__after_clear_bit ( ) ;
return 0 ;
}
/*
* hw_params callback
*/
static int snd_cx88_hw_params ( snd_pcm_substream_t * substream ,
snd_pcm_hw_params_t * hw_params )
{
snd_cx88_card_t * chip = snd_pcm_substream_chip ( substream ) ;
struct cx88_buffer * buf ;
if ( substream - > runtime - > dma_area ) {
dsp_buffer_free ( chip ) ;
substream - > runtime - > dma_area = NULL ;
}
chip - > period_size = params_period_bytes ( hw_params ) ;
chip - > num_periods = params_periods ( hw_params ) ;
chip - > dma_size = chip - > period_size * params_periods ( hw_params ) ;
BUG_ON ( ! chip - > dma_size ) ;
dprintk ( 1 , " Setting buffer \n " ) ;
buf = kmalloc ( sizeof ( * buf ) , GFP_KERNEL ) ;
if ( NULL = = buf )
return - ENOMEM ;
memset ( buf , 0 , sizeof ( * buf ) ) ;
buf - > vb . memory = V4L2_MEMORY_MMAP ;
buf - > vb . width = chip - > period_size ;
buf - > vb . height = chip - > num_periods ;
buf - > vb . size = chip - > dma_size ;
buf - > vb . field = V4L2_FIELD_NONE ;
videobuf_dma_init ( & buf - > vb . dma ) ;
videobuf_dma_init_kernel ( & buf - > vb . dma , PCI_DMA_FROMDEVICE ,
( PAGE_ALIGN ( buf - > vb . size ) > > PAGE_SHIFT ) ) ;
videobuf_dma_pci_map ( chip - > pci , & buf - > vb . dma ) ;
cx88_risc_databuffer ( chip - > pci , & buf - > risc ,
buf - > vb . dma . sglist ,
buf - > vb . width , buf - > vb . height ) ;
buf - > risc . jmp [ 0 ] = cpu_to_le32 ( RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC ) ;
buf - > risc . jmp [ 1 ] = cpu_to_le32 ( buf - > risc . dma ) ;
buf - > vb . state = STATE_PREPARED ;
buf - > bpl = chip - > period_size ;
chip - > buf = buf ;
chip - > dma_risc = buf - > vb . dma ;
dprintk ( 1 , " Buffer ready at %u \n " , chip - > dma_risc . nr_pages ) ;
substream - > runtime - > dma_area = chip - > dma_risc . vmalloc ;
return 0 ;
}
/*
* hw free callback
*/
static int snd_cx88_hw_free ( snd_pcm_substream_t * substream )
{
snd_cx88_card_t * chip = snd_pcm_substream_chip ( substream ) ;
if ( substream - > runtime - > dma_area ) {
dsp_buffer_free ( chip ) ;
substream - > runtime - > dma_area = NULL ;
}
return 0 ;
}
/*
* prepare callback
*/
static int snd_cx88_prepare ( snd_pcm_substream_t * substream )
{
return 0 ;
}
/*
* trigger callback
*/
static int snd_cx88_card_trigger ( snd_pcm_substream_t * substream , int cmd )
{
snd_cx88_card_t * chip = snd_pcm_substream_chip ( substream ) ;
int err ;
spin_lock ( & chip - > reg_lock ) ;
switch ( cmd ) {
case SNDRV_PCM_TRIGGER_START :
err = _cx88_start_audio_dma ( chip ) ;
break ;
case SNDRV_PCM_TRIGGER_STOP :
err = _cx88_stop_audio_dma ( chip ) ;
break ;
default :
err = - EINVAL ;
break ;
}
spin_unlock ( & chip - > reg_lock ) ;
return err ;
}
/*
* pointer callback
*/
static snd_pcm_uframes_t snd_cx88_pointer ( snd_pcm_substream_t * substream )
{
snd_cx88_card_t * chip = snd_pcm_substream_chip ( substream ) ;
snd_pcm_runtime_t * runtime = substream - > runtime ;
if ( chip - > read_count ) {
chip - > read_count - = snd_pcm_lib_period_bytes ( substream ) ;
chip - > read_offset + = snd_pcm_lib_period_bytes ( substream ) ;
if ( chip - > read_offset = = chip - > dma_size )
chip - > read_offset = 0 ;
}
dprintk ( 2 , " Pointer time, will return %li, read %li \n " , chip - > read_offset , chip - > read_count ) ;
return bytes_to_frames ( runtime , chip - > read_offset ) ;
}
/*
* operators
*/
static snd_pcm_ops_t snd_cx88_pcm_ops = {
. open = snd_cx88_pcm_open ,
. close = snd_cx88_close ,
. ioctl = snd_pcm_lib_ioctl ,
. hw_params = snd_cx88_hw_params ,
. hw_free = snd_cx88_hw_free ,
. prepare = snd_cx88_prepare ,
. trigger = snd_cx88_card_trigger ,
. pointer = snd_cx88_pointer ,
} ;
/*
* create a PCM device
*/
static int __devinit snd_cx88_pcm ( snd_cx88_card_t * chip , int device , char * name )
{
int err ;
snd_pcm_t * pcm ;
err = snd_pcm_new ( chip - > card , name , device , 0 , 1 , & pcm ) ;
if ( err < 0 )
return err ;
pcm - > private_data = chip ;
strcpy ( pcm - > name , name ) ;
snd_pcm_set_ops ( pcm , SNDRV_PCM_STREAM_CAPTURE , & snd_cx88_pcm_ops ) ;
return 0 ;
}
/****************************************************************************
CONTROL INTERFACE
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static int snd_cx88_capture_volume_info ( snd_kcontrol_t * kcontrol , snd_ctl_elem_info_t * info )
{
info - > type = SNDRV_CTL_ELEM_TYPE_INTEGER ;
info - > count = 1 ;
info - > value . integer . min = 0 ;
info - > value . integer . max = 0x3f ;
return 0 ;
}
/* OK - TODO: test it */
static int snd_cx88_capture_volume_get ( snd_kcontrol_t * kcontrol , snd_ctl_elem_value_t * value )
{
snd_cx88_card_t * chip = snd_kcontrol_chip ( kcontrol ) ;
struct cx88_core * core = chip - > core ;
value - > value . integer . value [ 0 ] = 0x3f - ( cx_read ( AUD_VOL_CTL ) & 0x3f ) ;
return 0 ;
}
/* OK - TODO: test it */
static int snd_cx88_capture_volume_put ( snd_kcontrol_t * kcontrol , snd_ctl_elem_value_t * value )
{
snd_cx88_card_t * chip = snd_kcontrol_chip ( kcontrol ) ;
struct cx88_core * core = chip - > core ;
int v ;
u32 old_control ;
spin_lock_irq ( & chip - > reg_lock ) ;
old_control = 0x3f - ( cx_read ( AUD_VOL_CTL ) & 0x3f ) ;
v = 0x3f - ( value - > value . integer . value [ 0 ] & 0x3f ) ;
cx_andor ( AUD_VOL_CTL , 0x3f , v ) ;
spin_unlock_irq ( & chip - > reg_lock ) ;
return v ! = old_control ;
}
static snd_kcontrol_new_t snd_cx88_capture_volume = {
. iface = SNDRV_CTL_ELEM_IFACE_MIXER ,
. name = " Capture Volume " ,
. info = snd_cx88_capture_volume_info ,
. get = snd_cx88_capture_volume_get ,
. put = snd_cx88_capture_volume_put ,
} ;
/****************************************************************************
Basic Flow for Sound Devices
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* PCI ID Table - 14f 1 : 8801 and 14f 1 : 8811 means function 1 : Audio
* Only boards with eeprom and byte 1 at eeprom = 1 have it
*/
struct pci_device_id cx88_audio_pci_tbl [ ] = {
{ 0x14f1 , 0x8801 , PCI_ANY_ID , PCI_ANY_ID , 0 , 0 , 0 } ,
{ 0x14f1 , 0x8811 , PCI_ANY_ID , PCI_ANY_ID , 0 , 0 , 0 } ,
{ 0 , }
} ;
MODULE_DEVICE_TABLE ( pci , cx88_audio_pci_tbl ) ;
/*
* Chip - specific destructor
*/
static int snd_cx88_free ( snd_cx88_card_t * chip )
{
if ( chip - > irq > = 0 ) {
synchronize_irq ( chip - > irq ) ;
free_irq ( chip - > irq , chip ) ;
}
cx88_core_put ( chip - > core , chip - > pci ) ;
pci_disable_device ( chip - > pci ) ;
return 0 ;
}
/*
* Component Destructor
*/
static void snd_cx88_dev_free ( snd_card_t * card )
{
snd_cx88_card_t * chip = card - > private_data ;
snd_cx88_free ( chip ) ;
}
/*
* Alsa Constructor - Component probe
*/
2006-01-13 09:10:19 -07:00
static int devno ;
2006-01-09 10:32:44 -07:00
static int __devinit snd_cx88_create ( snd_card_t * card , struct pci_dev * pci ,
snd_cx88_card_t * * rchip )
{
snd_cx88_card_t * chip ;
struct cx88_core * core ;
int err ;
* rchip = NULL ;
err = pci_enable_device ( pci ) ;
if ( err < 0 )
return err ;
pci_set_master ( pci ) ;
chip = ( snd_cx88_card_t * ) card - > private_data ;
core = cx88_core_get ( pci ) ;
if ( ! pci_dma_supported ( pci , 0xffffffff ) ) {
dprintk ( 0 , " %s/1: Oops: no 32bit PCI DMA ??? \n " , core - > name ) ;
err = - EIO ;
cx88_core_put ( core , pci ) ;
return err ;
}
/* pci init */
chip - > card = card ;
chip - > pci = pci ;
chip - > irq = - 1 ;
spin_lock_init ( & chip - > reg_lock ) ;
cx88_reset ( core ) ;
if ( NULL = = core ) {
err = - EINVAL ;
kfree ( chip ) ;
return err ;
}
chip - > core = core ;
/* get irq */
err = request_irq ( chip - > pci - > irq , cx8801_irq ,
SA_SHIRQ | SA_INTERRUPT , chip - > core - > name , chip ) ;
if ( err < 0 ) {
dprintk ( 0 , " %s: can't get IRQ %d \n " ,
chip - > core - > name , chip - > pci - > irq ) ;
return err ;
}
/* print pci info */
pci_read_config_byte ( pci , PCI_CLASS_REVISION , & chip - > pci_rev ) ;
pci_read_config_byte ( pci , PCI_LATENCY_TIMER , & chip - > pci_lat ) ;
dprintk ( 1 , " ALSA %s/%i: found at %s, rev: %d, irq: %d, "
" latency: %d, mmio: 0x%lx \n " , core - > name , devno ,
pci_name ( pci ) , chip - > pci_rev , pci - > irq ,
chip - > pci_lat , pci_resource_start ( pci , 0 ) ) ;
chip - > irq = pci - > irq ;
synchronize_irq ( chip - > irq ) ;
snd_card_set_dev ( card , & pci - > dev ) ;
* rchip = chip ;
return 0 ;
}
static int __devinit cx88_audio_initdev ( struct pci_dev * pci ,
const struct pci_device_id * pci_id )
{
snd_card_t * card ;
snd_cx88_card_t * chip ;
int err ;
if ( devno > = SNDRV_CARDS )
return ( - ENODEV ) ;
if ( ! enable [ devno ] ) {
+ + devno ;
return ( - ENOENT ) ;
}
card = snd_card_new ( index [ devno ] , id [ devno ] , THIS_MODULE , sizeof ( snd_cx88_card_t ) ) ;
if ( ! card )
return ( - ENOMEM ) ;
card - > private_free = snd_cx88_dev_free ;
err = snd_cx88_create ( card , pci , & chip ) ;
if ( err < 0 )
return ( err ) ;
err = snd_cx88_pcm ( chip , 0 , " CX88 Digital " ) ;
if ( err < 0 ) {
snd_card_free ( card ) ;
return ( err ) ;
}
err = snd_ctl_add ( card , snd_ctl_new1 ( & snd_cx88_capture_volume , chip ) ) ;
if ( err < 0 ) {
snd_card_free ( card ) ;
return ( err ) ;
}
strcpy ( card - > driver , " CX88x " ) ;
sprintf ( card - > shortname , " Conexant CX%x " , pci - > device ) ;
sprintf ( card - > longname , " %s at %#lx " ,
card - > shortname , pci_resource_start ( pci , 0 ) ) ;
strcpy ( card - > mixername , " CX88 " ) ;
dprintk ( 0 , " %s/%i: ALSA support for cx2388x boards \n " ,
card - > driver , devno ) ;
err = snd_card_register ( card ) ;
if ( err < 0 ) {
snd_card_free ( card ) ;
return ( err ) ;
}
snd_cx88_cards [ devno ] = card ;
pci_set_drvdata ( pci , card ) ;
devno + + ;
return 0 ;
}
/*
* ALSA destructor
*/
static void __devexit cx88_audio_finidev ( struct pci_dev * pci )
{
struct cx88_audio_dev * card = pci_get_drvdata ( pci ) ;
snd_card_free ( ( void * ) card ) ;
pci_set_drvdata ( pci , NULL ) ;
devno - - ;
}
/*
* PCI driver definition
*/
static struct pci_driver cx88_audio_pci_driver = {
. name = " cx88_audio " ,
. id_table = cx88_audio_pci_tbl ,
. probe = cx88_audio_initdev ,
. remove = cx88_audio_finidev ,
} ;
/****************************************************************************
LINUX MODULE INIT
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* module init
*/
static int cx88_audio_init ( void )
{
printk ( KERN_INFO " cx2388x alsa driver version %d.%d.%d loaded \n " ,
( CX88_VERSION_CODE > > 16 ) & 0xff ,
( CX88_VERSION_CODE > > 8 ) & 0xff ,
CX88_VERSION_CODE & 0xff ) ;
# ifdef SNAPSHOT
printk ( KERN_INFO " cx2388x: snapshot date %04d-%02d-%02d \n " ,
SNAPSHOT / 10000 , ( SNAPSHOT / 100 ) % 100 , SNAPSHOT % 100 ) ;
# endif
return pci_register_driver ( & cx88_audio_pci_driver ) ;
}
/*
* module remove
*/
static void cx88_audio_fini ( void )
{
pci_unregister_driver ( & cx88_audio_pci_driver ) ;
}
module_init ( cx88_audio_init ) ;
module_exit ( cx88_audio_fini ) ;
/* ----------------------------------------------------------- */
/*
* Local variables :
* c - basic - offset : 8
* End :
*/
