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linux-stable/sound/pci/cs46xx/dsp_spos_scb_lib.c
Takashi Iwai ba09f5d84e ALSA: cs46xx: More constifications 
Apply const prefix to each possible place: the static tables for
registers and op codes, etc.

Just for minor optimization and no functional changes.

Link: https://lore.kernel.org/r/20200105144823.29547-30-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-01-05 16:14:51 +01:00

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
*/
/*
* 2002-07 Benny Sjostrand benny@hostmobility.com
*/
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/mutex.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/info.h>
#include "cs46xx.h"
#include "cs46xx_lib.h"
#include "dsp_spos.h"
struct proc_scb_info {
struct dsp_scb_descriptor * scb_desc;
struct snd_cs46xx *chip;
};
static void remove_symbol (struct snd_cs46xx * chip, struct dsp_symbol_entry * symbol)
{
struct dsp_spos_instance * ins = chip->dsp_spos_instance;
int symbol_index = (int)(symbol - ins->symbol_table.symbols);
if (snd_BUG_ON(ins->symbol_table.nsymbols <= 0))
return;
if (snd_BUG_ON(symbol_index < 0 ||
symbol_index >= ins->symbol_table.nsymbols))
return;
ins->symbol_table.symbols[symbol_index].deleted = 1;
if (symbol_index < ins->symbol_table.highest_frag_index) {
ins->symbol_table.highest_frag_index = symbol_index;
}
if (symbol_index == ins->symbol_table.nsymbols - 1)
ins->symbol_table.nsymbols --;
if (ins->symbol_table.highest_frag_index > ins->symbol_table.nsymbols) {
ins->symbol_table.highest_frag_index = ins->symbol_table.nsymbols;
}
}
#ifdef CONFIG_SND_PROC_FS
static void cs46xx_dsp_proc_scb_info_read (struct snd_info_entry *entry,
struct snd_info_buffer *buffer)
{
struct proc_scb_info * scb_info = entry->private_data;
struct dsp_scb_descriptor * scb = scb_info->scb_desc;
struct snd_cs46xx *chip = scb_info->chip;
int j,col;
void __iomem *dst = chip->region.idx[1].remap_addr + DSP_PARAMETER_BYTE_OFFSET;
mutex_lock(&chip->spos_mutex);
snd_iprintf(buffer,"%04x %s:\n",scb->address,scb->scb_name);
for (col = 0,j = 0;j < 0x10; j++,col++) {
if (col == 4) {
snd_iprintf(buffer,"\n");
col = 0;
}
snd_iprintf(buffer,"%08x ",readl(dst + (scb->address + j) * sizeof(u32)));
}
snd_iprintf(buffer,"\n");
if (scb->parent_scb_ptr != NULL) {
snd_iprintf(buffer,"parent [%s:%04x] ",
scb->parent_scb_ptr->scb_name,
scb->parent_scb_ptr->address);
} else snd_iprintf(buffer,"parent [none] ");
snd_iprintf(buffer,"sub_list_ptr [%s:%04x]\nnext_scb_ptr [%s:%04x] task_entry [%s:%04x]\n",
scb->sub_list_ptr->scb_name,
scb->sub_list_ptr->address,
scb->next_scb_ptr->scb_name,
scb->next_scb_ptr->address,
scb->task_entry->symbol_name,
scb->task_entry->address);
snd_iprintf(buffer,"index [%d] ref_count [%d]\n",scb->index,scb->ref_count);
mutex_unlock(&chip->spos_mutex);
}
#endif
static void _dsp_unlink_scb (struct snd_cs46xx *chip, struct dsp_scb_descriptor * scb)
{
struct dsp_spos_instance * ins = chip->dsp_spos_instance;
if ( scb->parent_scb_ptr ) {
/* unlink parent SCB */
if (snd_BUG_ON(scb->parent_scb_ptr->sub_list_ptr != scb &&
scb->parent_scb_ptr->next_scb_ptr != scb))
return;
if (scb->parent_scb_ptr->sub_list_ptr == scb) {
if (scb->next_scb_ptr == ins->the_null_scb) {
/* last and only node in parent sublist */
scb->parent_scb_ptr->sub_list_ptr = scb->sub_list_ptr;
if (scb->sub_list_ptr != ins->the_null_scb) {
scb->sub_list_ptr->parent_scb_ptr = scb->parent_scb_ptr;
}
scb->sub_list_ptr = ins->the_null_scb;
} else {
/* first node in parent sublist */
scb->parent_scb_ptr->sub_list_ptr = scb->next_scb_ptr;
if (scb->next_scb_ptr != ins->the_null_scb) {
/* update next node parent ptr. */
scb->next_scb_ptr->parent_scb_ptr = scb->parent_scb_ptr;
}
scb->next_scb_ptr = ins->the_null_scb;
}
} else {
scb->parent_scb_ptr->next_scb_ptr = scb->next_scb_ptr;
if (scb->next_scb_ptr != ins->the_null_scb) {
/* update next node parent ptr. */
scb->next_scb_ptr->parent_scb_ptr = scb->parent_scb_ptr;
}
scb->next_scb_ptr = ins->the_null_scb;
}
/* update parent first entry in DSP RAM */
cs46xx_dsp_spos_update_scb(chip,scb->parent_scb_ptr);
/* then update entry in DSP RAM */
cs46xx_dsp_spos_update_scb(chip,scb);
scb->parent_scb_ptr = NULL;
}
}
static void _dsp_clear_sample_buffer (struct snd_cs46xx *chip, u32 sample_buffer_addr,
int dword_count)
{
void __iomem *dst = chip->region.idx[2].remap_addr + sample_buffer_addr;
int i;
for (i = 0; i < dword_count ; ++i ) {
writel(0, dst);
dst += 4;
}
}
void cs46xx_dsp_remove_scb (struct snd_cs46xx *chip, struct dsp_scb_descriptor * scb)
{
struct dsp_spos_instance * ins = chip->dsp_spos_instance;
unsigned long flags;
/* check integrety */
if (snd_BUG_ON(scb->index < 0 ||
scb->index >= ins->nscb ||
(ins->scbs + scb->index) != scb))
return;
#if 0
/* can't remove a SCB with childs before
removing childs first */
if (snd_BUG_ON(scb->sub_list_ptr != ins->the_null_scb ||
scb->next_scb_ptr != ins->the_null_scb))
goto _end;
#endif
spin_lock_irqsave(&chip->reg_lock, flags);
_dsp_unlink_scb (chip,scb);
spin_unlock_irqrestore(&chip->reg_lock, flags);
cs46xx_dsp_proc_free_scb_desc(scb);
if (snd_BUG_ON(!scb->scb_symbol))
return;
remove_symbol (chip,scb->scb_symbol);
ins->scbs[scb->index].deleted = 1;
#ifdef CONFIG_PM_SLEEP
kfree(ins->scbs[scb->index].data);
ins->scbs[scb->index].data = NULL;
#endif
if (scb->index < ins->scb_highest_frag_index)
ins->scb_highest_frag_index = scb->index;
if (scb->index == ins->nscb - 1) {
ins->nscb --;
}
if (ins->scb_highest_frag_index > ins->nscb) {
ins->scb_highest_frag_index = ins->nscb;
}
#if 0
/* !!!! THIS IS A PIECE OF SHIT MADE BY ME !!! */
for(i = scb->index + 1;i < ins->nscb; ++i) {
ins->scbs[i - 1].index = i - 1;
}
#endif
}
#ifdef CONFIG_SND_PROC_FS
void cs46xx_dsp_proc_free_scb_desc (struct dsp_scb_descriptor * scb)
{
if (scb->proc_info) {
struct proc_scb_info * scb_info = scb->proc_info->private_data;
struct snd_cs46xx *chip = scb_info->chip;
dev_dbg(chip->card->dev,
"cs46xx_dsp_proc_free_scb_desc: freeing %s\n",
scb->scb_name);
snd_info_free_entry(scb->proc_info);
scb->proc_info = NULL;
kfree (scb_info);
}
}
void cs46xx_dsp_proc_register_scb_desc (struct snd_cs46xx *chip,
struct dsp_scb_descriptor * scb)
{
struct dsp_spos_instance * ins = chip->dsp_spos_instance;
struct snd_info_entry * entry;
struct proc_scb_info * scb_info;
/* register to proc */
if (ins->snd_card != NULL && ins->proc_dsp_dir != NULL &&
scb->proc_info == NULL) {
entry = snd_info_create_card_entry(ins->snd_card, scb->scb_name,
ins->proc_dsp_dir);
if (entry) {
scb_info = kmalloc(sizeof(struct proc_scb_info), GFP_KERNEL);
if (!scb_info) {
snd_info_free_entry(entry);
entry = NULL;
goto out;
}
scb_info->chip = chip;
scb_info->scb_desc = scb;
snd_info_set_text_ops(entry, scb_info,
cs46xx_dsp_proc_scb_info_read);
}
out:
scb->proc_info = entry;
}
}
#endif /* CONFIG_SND_PROC_FS */
static struct dsp_scb_descriptor *
_dsp_create_generic_scb (struct snd_cs46xx *chip, char * name, u32 * scb_data, u32 dest,
struct dsp_symbol_entry * task_entry,
struct dsp_scb_descriptor * parent_scb,
int scb_child_type)
{
struct dsp_spos_instance * ins = chip->dsp_spos_instance;
struct dsp_scb_descriptor * scb;
unsigned long flags;
if (snd_BUG_ON(!ins->the_null_scb))
return NULL;
/* fill the data that will be wroten to DSP */
scb_data[SCBsubListPtr] =
(ins->the_null_scb->address << 0x10) | ins->the_null_scb->address;
scb_data[SCBfuncEntryPtr] &= 0xFFFF0000;
scb_data[SCBfuncEntryPtr] |= task_entry->address;
dev_dbg(chip->card->dev, "dsp_spos: creating SCB <%s>\n", name);
scb = cs46xx_dsp_create_scb(chip,name,scb_data,dest);
scb->sub_list_ptr = ins->the_null_scb;
scb->next_scb_ptr = ins->the_null_scb;
scb->parent_scb_ptr = parent_scb;
scb->task_entry = task_entry;
/* update parent SCB */
if (scb->parent_scb_ptr) {
#if 0
dev_dbg(chip->card->dev,
"scb->parent_scb_ptr = %s\n",
scb->parent_scb_ptr->scb_name);
dev_dbg(chip->card->dev,
"scb->parent_scb_ptr->next_scb_ptr = %s\n",
scb->parent_scb_ptr->next_scb_ptr->scb_name);
dev_dbg(chip->card->dev,
"scb->parent_scb_ptr->sub_list_ptr = %s\n",
scb->parent_scb_ptr->sub_list_ptr->scb_name);
#endif
/* link to parent SCB */
if (scb_child_type == SCB_ON_PARENT_NEXT_SCB) {
if (snd_BUG_ON(scb->parent_scb_ptr->next_scb_ptr !=
ins->the_null_scb))
return NULL;
scb->parent_scb_ptr->next_scb_ptr = scb;
} else if (scb_child_type == SCB_ON_PARENT_SUBLIST_SCB) {
if (snd_BUG_ON(scb->parent_scb_ptr->sub_list_ptr !=
ins->the_null_scb))
return NULL;
scb->parent_scb_ptr->sub_list_ptr = scb;
} else {
snd_BUG();
}
spin_lock_irqsave(&chip->reg_lock, flags);
/* update entry in DSP RAM */
cs46xx_dsp_spos_update_scb(chip,scb->parent_scb_ptr);
spin_unlock_irqrestore(&chip->reg_lock, flags);
}
cs46xx_dsp_proc_register_scb_desc (chip,scb);
return scb;
}
static struct dsp_scb_descriptor *
cs46xx_dsp_create_generic_scb (struct snd_cs46xx *chip, char * name, u32 * scb_data,
u32 dest, char * task_entry_name,
struct dsp_scb_descriptor * parent_scb,
int scb_child_type)
{
struct dsp_symbol_entry * task_entry;
task_entry = cs46xx_dsp_lookup_symbol (chip,task_entry_name,
SYMBOL_CODE);
if (task_entry == NULL) {
dev_err(chip->card->dev,
"dsp_spos: symbol %s not found\n", task_entry_name);
return NULL;
}
return _dsp_create_generic_scb (chip,name,scb_data,dest,task_entry,
parent_scb,scb_child_type);
}
struct dsp_scb_descriptor *
cs46xx_dsp_create_timing_master_scb (struct snd_cs46xx *chip)
{
struct dsp_scb_descriptor * scb;
struct dsp_timing_master_scb timing_master_scb = {
{ 0,
0,
0,
0
},
{ 0,
0,
0,
0,
0
},
0,0,
0,NULL_SCB_ADDR,
0,0, /* extraSampleAccum:TMreserved */
0,0, /* codecFIFOptr:codecFIFOsyncd */
0x0001,0x8000, /* fracSampAccumQm1:TMfrmsLeftInGroup */
0x0001,0x0000, /* fracSampCorrectionQm1:TMfrmGroupLength */
0x00060000 /* nSampPerFrmQ15 */
};
scb = cs46xx_dsp_create_generic_scb(chip,"TimingMasterSCBInst",(u32 *)&timing_master_scb,
TIMINGMASTER_SCB_ADDR,
"TIMINGMASTER",NULL,SCB_NO_PARENT);
return scb;
}
struct dsp_scb_descriptor *
cs46xx_dsp_create_codec_out_scb(struct snd_cs46xx * chip, char * codec_name,
u16 channel_disp, u16 fifo_addr, u16 child_scb_addr,
u32 dest, struct dsp_scb_descriptor * parent_scb,
int scb_child_type)
{
struct dsp_scb_descriptor * scb;
struct dsp_codec_output_scb codec_out_scb = {
{ 0,
0,
0,
0
},
{
0,
0,
0,
0,
0
},
0,0,
0,NULL_SCB_ADDR,
0, /* COstrmRsConfig */
0, /* COstrmBufPtr */
channel_disp,fifo_addr, /* leftChanBaseIOaddr:rightChanIOdisp */
0x0000,0x0080, /* (!AC97!) COexpVolChangeRate:COscaleShiftCount */
0,child_scb_addr /* COreserved - need child scb to work with rom code */
};
scb = cs46xx_dsp_create_generic_scb(chip,codec_name,(u32 *)&codec_out_scb,
dest,"S16_CODECOUTPUTTASK",parent_scb,
scb_child_type);
return scb;
}
struct dsp_scb_descriptor *
cs46xx_dsp_create_codec_in_scb(struct snd_cs46xx * chip, char * codec_name,
u16 channel_disp, u16 fifo_addr, u16 sample_buffer_addr,
u32 dest, struct dsp_scb_descriptor * parent_scb,
int scb_child_type)
{
struct dsp_scb_descriptor * scb;
struct dsp_codec_input_scb codec_input_scb = {
{ 0,
0,
0,
0
},
{
0,
0,
0,
0,
0
},
#if 0 /* cs4620 */
SyncIOSCB,NULL_SCB_ADDR
#else
0 , 0,
#endif
0,0,
RSCONFIG_SAMPLE_16STEREO + RSCONFIG_MODULO_64, /* strmRsConfig */
sample_buffer_addr << 0x10, /* strmBufPtr; defined as a dword ptr, used as a byte ptr */
channel_disp,fifo_addr, /* (!AC97!) leftChanBaseINaddr=AC97primary
link input slot 3 :rightChanINdisp=""slot 4 */
0x0000,0x0000, /* (!AC97!) ????:scaleShiftCount; no shift needed
because AC97 is already 20 bits */
0x80008000 /* ??clw cwcgame.scb has 0 */
};
scb = cs46xx_dsp_create_generic_scb(chip,codec_name,(u32 *)&codec_input_scb,
dest,"S16_CODECINPUTTASK",parent_scb,
scb_child_type);
return scb;
}
static struct dsp_scb_descriptor *
cs46xx_dsp_create_pcm_reader_scb(struct snd_cs46xx * chip, char * scb_name,
u16 sample_buffer_addr, u32 dest,
int virtual_channel, u32 playback_hw_addr,
struct dsp_scb_descriptor * parent_scb,
int scb_child_type)
{
struct dsp_spos_instance * ins = chip->dsp_spos_instance;
struct dsp_scb_descriptor * scb;
struct dsp_generic_scb pcm_reader_scb = {
/*
Play DMA Task xfers data from host buffer to SP buffer
init/runtime variables:
PlayAC: Play Audio Data Conversion - SCB loc: 2nd dword, mask: 0x0000F000L
DATA_FMT_16BIT_ST_LTLEND(0x00000000L) from 16-bit stereo, little-endian
DATA_FMT_8_BIT_ST_SIGNED(0x00001000L) from 8-bit stereo, signed
DATA_FMT_16BIT_MN_LTLEND(0x00002000L) from 16-bit mono, little-endian
DATA_FMT_8_BIT_MN_SIGNED(0x00003000L) from 8-bit mono, signed
DATA_FMT_16BIT_ST_BIGEND(0x00004000L) from 16-bit stereo, big-endian
DATA_FMT_16BIT_MN_BIGEND(0x00006000L) from 16-bit mono, big-endian
DATA_FMT_8_BIT_ST_UNSIGNED(0x00009000L) from 8-bit stereo, unsigned
DATA_FMT_8_BIT_MN_UNSIGNED(0x0000b000L) from 8-bit mono, unsigned
? Other combinations possible from:
DMA_RQ_C2_AUDIO_CONVERT_MASK 0x0000F000L
DMA_RQ_C2_AC_NONE 0x00000000L
DMA_RQ_C2_AC_8_TO_16_BIT 0x00001000L
DMA_RQ_C2_AC_MONO_TO_STEREO 0x00002000L
DMA_RQ_C2_AC_ENDIAN_CONVERT 0x00004000L
DMA_RQ_C2_AC_SIGNED_CONVERT 0x00008000L
HostBuffAddr: Host Buffer Physical Byte Address - SCB loc:3rd dword, Mask: 0xFFFFFFFFL
aligned to dword boundary
*/
/* Basic (non scatter/gather) DMA requestor (4 ints) */
{ DMA_RQ_C1_SOURCE_ON_HOST + /* source buffer is on the host */
DMA_RQ_C1_SOURCE_MOD1024 + /* source buffer is 1024 dwords (4096 bytes) */
DMA_RQ_C1_DEST_MOD32 + /* dest buffer(PCMreaderBuf) is 32 dwords*/
DMA_RQ_C1_WRITEBACK_SRC_FLAG + /* ?? */
DMA_RQ_C1_WRITEBACK_DEST_FLAG + /* ?? */
15, /* DwordCount-1: picked 16 for DwordCount because Jim */
/* Barnette said that is what we should use since */
/* we are not running in optimized mode? */
DMA_RQ_C2_AC_NONE +
DMA_RQ_C2_SIGNAL_SOURCE_PINGPONG + /* set play interrupt (bit0) in HISR when source */
/* buffer (on host) crosses half-way point */
virtual_channel, /* Play DMA channel arbitrarily set to 0 */
playback_hw_addr, /* HostBuffAddr (source) */
DMA_RQ_SD_SP_SAMPLE_ADDR + /* destination buffer is in SP Sample Memory */
sample_buffer_addr /* SP Buffer Address (destination) */
},
/* Scatter/gather DMA requestor extension (5 ints) */
{
0,
0,
0,
0,
0
},
/* Sublist pointer & next stream control block (SCB) link. */
NULL_SCB_ADDR,NULL_SCB_ADDR,
/* Pointer to this tasks parameter block & stream function pointer */
0,NULL_SCB_ADDR,
/* rsConfig register for stream buffer (rsDMA reg. is loaded from basicReq.daw */
/* for incoming streams, or basicReq.saw, for outgoing streams) */
RSCONFIG_DMA_ENABLE + /* enable DMA */
(19 << RSCONFIG_MAX_DMA_SIZE_SHIFT) + /* MAX_DMA_SIZE picked to be 19 since SPUD */
/* uses it for some reason */
((dest >> 4) << RSCONFIG_STREAM_NUM_SHIFT) + /* stream number = SCBaddr/16 */
RSCONFIG_SAMPLE_16STEREO +
RSCONFIG_MODULO_32, /* dest buffer(PCMreaderBuf) is 32 dwords (256 bytes) */
/* Stream sample pointer & MAC-unit mode for this stream */
(sample_buffer_addr << 0x10),
/* Fractional increment per output sample in the input sample buffer */
0,
{
/* Standard stereo volume control
default muted */
0xffff,0xffff,
0xffff,0xffff
}
};
if (ins->null_algorithm == NULL) {
ins->null_algorithm = cs46xx_dsp_lookup_symbol (chip,"NULLALGORITHM",
SYMBOL_CODE);
if (ins->null_algorithm == NULL) {
dev_err(chip->card->dev,
"dsp_spos: symbol NULLALGORITHM not found\n");
return NULL;
}
}
scb = _dsp_create_generic_scb(chip,scb_name,(u32 *)&pcm_reader_scb,
dest,ins->null_algorithm,parent_scb,
scb_child_type);
return scb;
}
#define GOF_PER_SEC 200
struct dsp_scb_descriptor *
cs46xx_dsp_create_src_task_scb(struct snd_cs46xx * chip, char * scb_name,
int rate,
u16 src_buffer_addr,
u16 src_delay_buffer_addr, u32 dest,
struct dsp_scb_descriptor * parent_scb,
int scb_child_type,
int pass_through)
{
struct dsp_spos_instance * ins = chip->dsp_spos_instance;
struct dsp_scb_descriptor * scb;
unsigned int tmp1, tmp2;
unsigned int phiIncr;
unsigned int correctionPerGOF, correctionPerSec;
dev_dbg(chip->card->dev, "dsp_spos: setting %s rate to %u\n",
scb_name, rate);
/*
* Compute the values used to drive the actual sample rate conversion.
* The following formulas are being computed, using inline assembly
* since we need to use 64 bit arithmetic to compute the values:
*
* phiIncr = floor((Fs,in * 2^26) / Fs,out)
* correctionPerGOF = floor((Fs,in * 2^26 - Fs,out * phiIncr) /
* GOF_PER_SEC)
* ulCorrectionPerSec = Fs,in * 2^26 - Fs,out * phiIncr -M
* GOF_PER_SEC * correctionPerGOF
*
* i.e.
*
* phiIncr:other = dividend:remainder((Fs,in * 2^26) / Fs,out)
* correctionPerGOF:correctionPerSec =
* dividend:remainder(ulOther / GOF_PER_SEC)
*/
tmp1 = rate << 16;
phiIncr = tmp1 / 48000;
tmp1 -= phiIncr * 48000;
tmp1 <<= 10;
phiIncr <<= 10;
tmp2 = tmp1 / 48000;
phiIncr += tmp2;
tmp1 -= tmp2 * 48000;
correctionPerGOF = tmp1 / GOF_PER_SEC;
tmp1 -= correctionPerGOF * GOF_PER_SEC;
correctionPerSec = tmp1;
{
struct dsp_src_task_scb src_task_scb = {
0x0028,0x00c8,
0x5555,0x0000,
0x0000,0x0000,
src_buffer_addr,1,
correctionPerGOF,correctionPerSec,
RSCONFIG_SAMPLE_16STEREO + RSCONFIG_MODULO_32,
0x0000,src_delay_buffer_addr,
0x0,
0x080,(src_delay_buffer_addr + (24 * 4)),
0,0, /* next_scb, sub_list_ptr */
0,0, /* entry, this_spb */
RSCONFIG_SAMPLE_16STEREO + RSCONFIG_MODULO_8,
src_buffer_addr << 0x10,
phiIncr,
{
0xffff - ins->dac_volume_right,0xffff - ins->dac_volume_left,
0xffff - ins->dac_volume_right,0xffff - ins->dac_volume_left
}
};
if (ins->s16_up == NULL) {
ins->s16_up = cs46xx_dsp_lookup_symbol (chip,"S16_UPSRC",
SYMBOL_CODE);
if (ins->s16_up == NULL) {
dev_err(chip->card->dev,
"dsp_spos: symbol S16_UPSRC not found\n");
return NULL;
}
}
/* clear buffers */
_dsp_clear_sample_buffer (chip,src_buffer_addr,8);
_dsp_clear_sample_buffer (chip,src_delay_buffer_addr,32);
if (pass_through) {
/* wont work with any other rate than
the native DSP rate */
snd_BUG_ON(rate != 48000);
scb = cs46xx_dsp_create_generic_scb(chip,scb_name,(u32 *)&src_task_scb,
dest,"DMAREADER",parent_scb,
scb_child_type);
} else {
scb = _dsp_create_generic_scb(chip,scb_name,(u32 *)&src_task_scb,
dest,ins->s16_up,parent_scb,
scb_child_type);
}
}
return scb;
}
#if 0 /* not used */
struct dsp_scb_descriptor *
cs46xx_dsp_create_filter_scb(struct snd_cs46xx * chip, char * scb_name,
u16 buffer_addr, u32 dest,
struct dsp_scb_descriptor * parent_scb,
int scb_child_type) {
struct dsp_scb_descriptor * scb;
struct dsp_filter_scb filter_scb = {
.a0_right = 0x41a9,
.a0_left = 0x41a9,
.a1_right = 0xb8e4,
.a1_left = 0xb8e4,
.a2_right = 0x3e55,
.a2_left = 0x3e55,
.filter_unused3 = 0x0000,
.filter_unused2 = 0x0000,
.output_buf_ptr = buffer_addr,
.init = 0x000,
.prev_sample_output1 = 0x00000000,
.prev_sample_output2 = 0x00000000,
.prev_sample_input1 = 0x00000000,
.prev_sample_input2 = 0x00000000,
.next_scb_ptr = 0x0000,
.sub_list_ptr = 0x0000,
.entry_point = 0x0000,
.spb_ptr = 0x0000,
.b0_right = 0x0e38,
.b0_left = 0x0e38,
.b1_right = 0x1c71,
.b1_left = 0x1c71,
.b2_right = 0x0e38,
.b2_left = 0x0e38,
};
scb = cs46xx_dsp_create_generic_scb(chip,scb_name,(u32 *)&filter_scb,
dest,"FILTERTASK",parent_scb,
scb_child_type);
return scb;
}
#endif /* not used */
struct dsp_scb_descriptor *
cs46xx_dsp_create_mix_only_scb(struct snd_cs46xx * chip, char * scb_name,
u16 mix_buffer_addr, u32 dest,
struct dsp_scb_descriptor * parent_scb,
int scb_child_type)
{
struct dsp_scb_descriptor * scb;
struct dsp_mix_only_scb master_mix_scb = {
/* 0 */ { 0,
/* 1 */ 0,
/* 2 */ mix_buffer_addr,
/* 3 */ 0
/* */ },
{
/* 4 */ 0,
/* 5 */ 0,
/* 6 */ 0,
/* 7 */ 0,
/* 8 */ 0x00000080
},
/* 9 */ 0,0,
/* A */ 0,0,
/* B */ RSCONFIG_SAMPLE_16STEREO + RSCONFIG_MODULO_32,
/* C */ (mix_buffer_addr + (16 * 4)) << 0x10,
/* D */ 0,
{
/* E */ 0x8000,0x8000,
/* F */ 0x8000,0x8000
}
};
scb = cs46xx_dsp_create_generic_scb(chip,scb_name,(u32 *)&master_mix_scb,
dest,"S16_MIX",parent_scb,
scb_child_type);
return scb;
}
struct dsp_scb_descriptor *
cs46xx_dsp_create_mix_to_ostream_scb(struct snd_cs46xx * chip, char * scb_name,
u16 mix_buffer_addr, u16 writeback_spb, u32 dest,
struct dsp_scb_descriptor * parent_scb,
int scb_child_type)
{
struct dsp_scb_descriptor * scb;
struct dsp_mix2_ostream_scb mix2_ostream_scb = {
/* Basic (non scatter/gather) DMA requestor (4 ints) */
{
DMA_RQ_C1_SOURCE_MOD64 +
DMA_RQ_C1_DEST_ON_HOST +
DMA_RQ_C1_DEST_MOD1024 +
DMA_RQ_C1_WRITEBACK_SRC_FLAG +
DMA_RQ_C1_WRITEBACK_DEST_FLAG +
15,
DMA_RQ_C2_AC_NONE +
DMA_RQ_C2_SIGNAL_DEST_PINGPONG +
CS46XX_DSP_CAPTURE_CHANNEL,
DMA_RQ_SD_SP_SAMPLE_ADDR +
mix_buffer_addr,
0x0
},
{ 0, 0, 0, 0, 0, },
0,0,
0,writeback_spb,
RSCONFIG_DMA_ENABLE +
(19 << RSCONFIG_MAX_DMA_SIZE_SHIFT) +
((dest >> 4) << RSCONFIG_STREAM_NUM_SHIFT) +
RSCONFIG_DMA_TO_HOST +
RSCONFIG_SAMPLE_16STEREO +
RSCONFIG_MODULO_64,
(mix_buffer_addr + (32 * 4)) << 0x10,
1,0,
0x0001,0x0080,
0xFFFF,0
};
scb = cs46xx_dsp_create_generic_scb(chip,scb_name,(u32 *)&mix2_ostream_scb,
dest,"S16_MIX_TO_OSTREAM",parent_scb,
scb_child_type);
return scb;
}
struct dsp_scb_descriptor *
cs46xx_dsp_create_vari_decimate_scb(struct snd_cs46xx * chip,char * scb_name,
u16 vari_buffer_addr0,
u16 vari_buffer_addr1,
u32 dest,
struct dsp_scb_descriptor * parent_scb,
int scb_child_type)
{
struct dsp_scb_descriptor * scb;
struct dsp_vari_decimate_scb vari_decimate_scb = {
0x0028,0x00c8,
0x5555,0x0000,
0x0000,0x0000,
vari_buffer_addr0,vari_buffer_addr1,
0x0028,0x00c8,
RSCONFIG_SAMPLE_16STEREO + RSCONFIG_MODULO_256,
0xFF800000,
0,
0x0080,vari_buffer_addr1 + (25 * 4),
0,0,
0,0,
RSCONFIG_SAMPLE_16STEREO + RSCONFIG_MODULO_8,
vari_buffer_addr0 << 0x10,
0x04000000,
{
0x8000,0x8000,
0xFFFF,0xFFFF
}
};
scb = cs46xx_dsp_create_generic_scb(chip,scb_name,(u32 *)&vari_decimate_scb,
dest,"VARIDECIMATE",parent_scb,
scb_child_type);
return scb;
}
static struct dsp_scb_descriptor *
cs46xx_dsp_create_pcm_serial_input_scb(struct snd_cs46xx * chip, char * scb_name, u32 dest,
struct dsp_scb_descriptor * input_scb,
struct dsp_scb_descriptor * parent_scb,
int scb_child_type)
{
struct dsp_scb_descriptor * scb;
struct dsp_pcm_serial_input_scb pcm_serial_input_scb = {
{ 0,
0,
0,
0
},
{
0,
0,
0,
0,
0
},
0,0,
0,0,
RSCONFIG_SAMPLE_16STEREO + RSCONFIG_MODULO_16,
0,
/* 0xD */ 0,input_scb->address,
{
/* 0xE */ 0x8000,0x8000,
/* 0xF */ 0x8000,0x8000
}
};
scb = cs46xx_dsp_create_generic_scb(chip,scb_name,(u32 *)&pcm_serial_input_scb,
dest,"PCMSERIALINPUTTASK",parent_scb,
scb_child_type);
return scb;
}
static struct dsp_scb_descriptor *
cs46xx_dsp_create_asynch_fg_tx_scb(struct snd_cs46xx * chip, char * scb_name, u32 dest,
u16 hfg_scb_address,
u16 asynch_buffer_address,
struct dsp_scb_descriptor * parent_scb,
int scb_child_type)
{
struct dsp_scb_descriptor * scb;
struct dsp_asynch_fg_tx_scb asynch_fg_tx_scb = {
0xfc00,0x03ff, /* Prototype sample buffer size of 256 dwords */
0x0058,0x0028, /* Min Delta 7 dwords == 28 bytes */
/* : Max delta 25 dwords == 100 bytes */
0,hfg_scb_address, /* Point to HFG task SCB */
0,0, /* Initialize current Delta and Consumer ptr adjustment count */
0, /* Initialize accumulated Phi to 0 */
0,0x2aab, /* Const 1/3 */
{
0, /* Define the unused elements */
0,
0
},
0,0,
0,dest + AFGTxAccumPhi,
RSCONFIG_SAMPLE_16STEREO + RSCONFIG_MODULO_256, /* Stereo, 256 dword */
(asynch_buffer_address) << 0x10, /* This should be automagically synchronized
to the producer pointer */
/* There is no correct initial value, it will depend upon the detected
rate etc */
0x18000000, /* Phi increment for approx 32k operation */
0x8000,0x8000, /* Volume controls are unused at this time */
0x8000,0x8000
};
scb = cs46xx_dsp_create_generic_scb(chip,scb_name,(u32 *)&asynch_fg_tx_scb,
dest,"ASYNCHFGTXCODE",parent_scb,
scb_child_type);
return scb;
}
struct dsp_scb_descriptor *
cs46xx_dsp_create_asynch_fg_rx_scb(struct snd_cs46xx * chip, char * scb_name, u32 dest,
u16 hfg_scb_address,
u16 asynch_buffer_address,
struct dsp_scb_descriptor * parent_scb,
int scb_child_type)
{
struct dsp_spos_instance * ins = chip->dsp_spos_instance;
struct dsp_scb_descriptor * scb;
struct dsp_asynch_fg_rx_scb asynch_fg_rx_scb = {
0xfe00,0x01ff, /* Prototype sample buffer size of 128 dwords */
0x0064,0x001c, /* Min Delta 7 dwords == 28 bytes */
/* : Max delta 25 dwords == 100 bytes */
0,hfg_scb_address, /* Point to HFG task SCB */
0,0, /* Initialize current Delta and Consumer ptr adjustment count */
{
0, /* Define the unused elements */
0,
0,
0,
0
},
0,0,
0,dest,
RSCONFIG_MODULO_128 |
RSCONFIG_SAMPLE_16STEREO, /* Stereo, 128 dword */
( (asynch_buffer_address + (16 * 4)) << 0x10), /* This should be automagically
synchrinized to the producer pointer */
/* There is no correct initial value, it will depend upon the detected
rate etc */
0x18000000,
/* Set IEC958 input volume */
0xffff - ins->spdif_input_volume_right,0xffff - ins->spdif_input_volume_left,
0xffff - ins->spdif_input_volume_right,0xffff - ins->spdif_input_volume_left,
};
scb = cs46xx_dsp_create_generic_scb(chip,scb_name,(u32 *)&asynch_fg_rx_scb,
dest,"ASYNCHFGRXCODE",parent_scb,
scb_child_type);
return scb;
}
#if 0 /* not used */
struct dsp_scb_descriptor *
cs46xx_dsp_create_output_snoop_scb(struct snd_cs46xx * chip, char * scb_name, u32 dest,
u16 snoop_buffer_address,
struct dsp_scb_descriptor * snoop_scb,
struct dsp_scb_descriptor * parent_scb,
int scb_child_type)
{
struct dsp_scb_descriptor * scb;
struct dsp_output_snoop_scb output_snoop_scb = {
{ 0, /* not used. Zero */
0,
0,
0,
},
{
0, /* not used. Zero */
0,
0,
0,
0
},
0,0,
0,0,
RSCONFIG_SAMPLE_16STEREO + RSCONFIG_MODULO_64,
snoop_buffer_address << 0x10,
0,0,
0,
0,snoop_scb->address
};
scb = cs46xx_dsp_create_generic_scb(chip,scb_name,(u32 *)&output_snoop_scb,
dest,"OUTPUTSNOOP",parent_scb,
scb_child_type);
return scb;
}
#endif /* not used */
struct dsp_scb_descriptor *
cs46xx_dsp_create_spio_write_scb(struct snd_cs46xx * chip, char * scb_name, u32 dest,
struct dsp_scb_descriptor * parent_scb,
int scb_child_type)
{
struct dsp_scb_descriptor * scb;
struct dsp_spio_write_scb spio_write_scb = {
0,0, /* SPIOWAddress2:SPIOWAddress1; */
0, /* SPIOWData1; */
0, /* SPIOWData2; */
0,0, /* SPIOWAddress4:SPIOWAddress3; */
0, /* SPIOWData3; */
0, /* SPIOWData4; */
0,0, /* SPIOWDataPtr:Unused1; */
{ 0,0 }, /* Unused2[2]; */
0,0, /* SPIOWChildPtr:SPIOWSiblingPtr; */
0,0, /* SPIOWThisPtr:SPIOWEntryPoint; */
{
0,
0,
0,
0,
0 /* Unused3[5]; */
}
};
scb = cs46xx_dsp_create_generic_scb(chip,scb_name,(u32 *)&spio_write_scb,
dest,"SPIOWRITE",parent_scb,
scb_child_type);
return scb;
}
struct dsp_scb_descriptor *
cs46xx_dsp_create_magic_snoop_scb(struct snd_cs46xx * chip, char * scb_name, u32 dest,
u16 snoop_buffer_address,
struct dsp_scb_descriptor * snoop_scb,
struct dsp_scb_descriptor * parent_scb,
int scb_child_type)
{
struct dsp_scb_descriptor * scb;
struct dsp_magic_snoop_task magic_snoop_scb = {
/* 0 */ 0, /* i0 */
/* 1 */ 0, /* i1 */
/* 2 */ snoop_buffer_address << 0x10,
/* 3 */ 0,snoop_scb->address,
/* 4 */ 0, /* i3 */
/* 5 */ 0, /* i4 */
/* 6 */ 0, /* i5 */
/* 7 */ 0, /* i6 */
/* 8 */ 0, /* i7 */
/* 9 */ 0,0, /* next_scb, sub_list_ptr */
/* A */ 0,0, /* entry_point, this_ptr */
/* B */ RSCONFIG_SAMPLE_16STEREO + RSCONFIG_MODULO_64,
/* C */ snoop_buffer_address << 0x10,
/* D */ 0,
/* E */ { 0x8000,0x8000,
/* F */ 0xffff,0xffff
}
};
scb = cs46xx_dsp_create_generic_scb(chip,scb_name,(u32 *)&magic_snoop_scb,
dest,"MAGICSNOOPTASK",parent_scb,
scb_child_type);
return scb;
}
static struct dsp_scb_descriptor *
find_next_free_scb (struct snd_cs46xx * chip, struct dsp_scb_descriptor * from)
{
struct dsp_spos_instance * ins = chip->dsp_spos_instance;
struct dsp_scb_descriptor * scb = from;
while (scb->next_scb_ptr != ins->the_null_scb) {
if (snd_BUG_ON(!scb->next_scb_ptr))
return NULL;
scb = scb->next_scb_ptr;
}
return scb;
}
static const u32 pcm_reader_buffer_addr[DSP_MAX_PCM_CHANNELS] = {
0x0600, /* 1 */
0x1500, /* 2 */
0x1580, /* 3 */
0x1600, /* 4 */
0x1680, /* 5 */
0x1700, /* 6 */
0x1780, /* 7 */
0x1800, /* 8 */
0x1880, /* 9 */
0x1900, /* 10 */
0x1980, /* 11 */
0x1A00, /* 12 */
0x1A80, /* 13 */
0x1B00, /* 14 */
0x1B80, /* 15 */
0x1C00, /* 16 */
0x1C80, /* 17 */
0x1D00, /* 18 */
0x1D80, /* 19 */
0x1E00, /* 20 */
0x1E80, /* 21 */
0x1F00, /* 22 */
0x1F80, /* 23 */
0x2000, /* 24 */
0x2080, /* 25 */
0x2100, /* 26 */
0x2180, /* 27 */
0x2200, /* 28 */
0x2280, /* 29 */
0x2300, /* 30 */
0x2380, /* 31 */
0x2400, /* 32 */
};
static const u32 src_output_buffer_addr[DSP_MAX_SRC_NR] = {
0x2B80,
0x2BA0,
0x2BC0,
0x2BE0,
0x2D00,
0x2D20,
0x2D40,
0x2D60,
0x2D80,
0x2DA0,
0x2DC0,
0x2DE0,
0x2E00,
0x2E20
};
static const u32 src_delay_buffer_addr[DSP_MAX_SRC_NR] = {
0x2480,
0x2500,
0x2580,
0x2600,
0x2680,
0x2700,
0x2780,
0x2800,
0x2880,
0x2900,
0x2980,
0x2A00,
0x2A80,
0x2B00
};
struct dsp_pcm_channel_descriptor *
cs46xx_dsp_create_pcm_channel (struct snd_cs46xx * chip,
u32 sample_rate, void * private_data,
u32 hw_dma_addr,
int pcm_channel_id)
{
struct dsp_spos_instance * ins = chip->dsp_spos_instance;
struct dsp_scb_descriptor * src_scb = NULL, * pcm_scb, * mixer_scb = NULL;
struct dsp_scb_descriptor * src_parent_scb = NULL;
/* struct dsp_scb_descriptor * pcm_parent_scb; */
char scb_name[DSP_MAX_SCB_NAME];
int i, pcm_index = -1, insert_point, src_index = -1, pass_through = 0;
unsigned long flags;
switch (pcm_channel_id) {
case DSP_PCM_MAIN_CHANNEL:
mixer_scb = ins->master_mix_scb;
break;
case DSP_PCM_REAR_CHANNEL:
mixer_scb = ins->rear_mix_scb;
break;
case DSP_PCM_CENTER_LFE_CHANNEL:
mixer_scb = ins->center_lfe_mix_scb;
break;
case DSP_PCM_S71_CHANNEL:
/* TODO */
snd_BUG();
break;
case DSP_IEC958_CHANNEL:
if (snd_BUG_ON(!ins->asynch_tx_scb))
return NULL;
mixer_scb = ins->asynch_tx_scb;
/* if sample rate is set to 48khz we pass
the Sample Rate Converted (which could
alter the raw data stream ...) */
if (sample_rate == 48000) {
dev_dbg(chip->card->dev, "IEC958 pass through\n");
/* Hack to bypass creating a new SRC */
pass_through = 1;
}
break;
default:
snd_BUG();
return NULL;
}
/* default sample rate is 44100 */
if (!sample_rate) sample_rate = 44100;
/* search for a already created SRC SCB with the same sample rate */
for (i = 0; i < DSP_MAX_PCM_CHANNELS &&
(pcm_index == -1 || src_scb == NULL); ++i) {
/* virtual channel reserved
for capture */
if (i == CS46XX_DSP_CAPTURE_CHANNEL) continue;
if (ins->pcm_channels[i].active) {
if (!src_scb &&
ins->pcm_channels[i].sample_rate == sample_rate &&
ins->pcm_channels[i].mixer_scb == mixer_scb) {
src_scb = ins->pcm_channels[i].src_scb;
ins->pcm_channels[i].src_scb->ref_count ++;
src_index = ins->pcm_channels[i].src_slot;
}
} else if (pcm_index == -1) {
pcm_index = i;
}
}
if (pcm_index == -1) {
dev_err(chip->card->dev, "dsp_spos: no free PCM channel\n");
return NULL;
}
if (src_scb == NULL) {
if (ins->nsrc_scb >= DSP_MAX_SRC_NR) {
dev_err(chip->card->dev,
"dsp_spos: to many SRC instances\n!");
return NULL;
}
/* find a free slot */
for (i = 0; i < DSP_MAX_SRC_NR; ++i) {
if (ins->src_scb_slots[i] == 0) {
src_index = i;
ins->src_scb_slots[i] = 1;
break;
}
}
if (snd_BUG_ON(src_index == -1))
return NULL;
/* we need to create a new SRC SCB */
if (mixer_scb->sub_list_ptr == ins->the_null_scb) {
src_parent_scb = mixer_scb;
insert_point = SCB_ON_PARENT_SUBLIST_SCB;
} else {
src_parent_scb = find_next_free_scb(chip,mixer_scb->sub_list_ptr);
insert_point = SCB_ON_PARENT_NEXT_SCB;
}
snprintf (scb_name,DSP_MAX_SCB_NAME,"SrcTask_SCB%d",src_index);
dev_dbg(chip->card->dev,
"dsp_spos: creating SRC \"%s\"\n", scb_name);
src_scb = cs46xx_dsp_create_src_task_scb(chip,scb_name,
sample_rate,
src_output_buffer_addr[src_index],
src_delay_buffer_addr[src_index],
/* 0x400 - 0x600 source SCBs */
0x400 + (src_index * 0x10) ,
src_parent_scb,
insert_point,
pass_through);
if (!src_scb) {
dev_err(chip->card->dev,
"dsp_spos: failed to create SRCtaskSCB\n");
return NULL;
}
/* cs46xx_dsp_set_src_sample_rate(chip,src_scb,sample_rate); */
ins->nsrc_scb ++;
}
snprintf (scb_name,DSP_MAX_SCB_NAME,"PCMReader_SCB%d",pcm_index);
dev_dbg(chip->card->dev, "dsp_spos: creating PCM \"%s\" (%d)\n",
scb_name, pcm_channel_id);
pcm_scb = cs46xx_dsp_create_pcm_reader_scb(chip,scb_name,
pcm_reader_buffer_addr[pcm_index],
/* 0x200 - 400 PCMreader SCBs */
(pcm_index * 0x10) + 0x200,
pcm_index, /* virtual channel 0-31 */
hw_dma_addr, /* pcm hw addr */
NULL, /* parent SCB ptr */
0 /* insert point */
);
if (!pcm_scb) {
dev_err(chip->card->dev,
"dsp_spos: failed to create PCMreaderSCB\n");
return NULL;
}
spin_lock_irqsave(&chip->reg_lock, flags);
ins->pcm_channels[pcm_index].sample_rate = sample_rate;
ins->pcm_channels[pcm_index].pcm_reader_scb = pcm_scb;
ins->pcm_channels[pcm_index].src_scb = src_scb;
ins->pcm_channels[pcm_index].unlinked = 1;
ins->pcm_channels[pcm_index].private_data = private_data;
ins->pcm_channels[pcm_index].src_slot = src_index;
ins->pcm_channels[pcm_index].active = 1;
ins->pcm_channels[pcm_index].pcm_slot = pcm_index;
ins->pcm_channels[pcm_index].mixer_scb = mixer_scb;
ins->npcm_channels ++;
spin_unlock_irqrestore(&chip->reg_lock, flags);
return (ins->pcm_channels + pcm_index);
}
int cs46xx_dsp_pcm_channel_set_period (struct snd_cs46xx * chip,
struct dsp_pcm_channel_descriptor * pcm_channel,
int period_size)
{
u32 temp = snd_cs46xx_peek (chip,pcm_channel->pcm_reader_scb->address << 2);
temp &= ~DMA_RQ_C1_SOURCE_SIZE_MASK;
switch (period_size) {
case 2048:
temp |= DMA_RQ_C1_SOURCE_MOD1024;
break;
case 1024:
temp |= DMA_RQ_C1_SOURCE_MOD512;
break;
case 512:
temp |= DMA_RQ_C1_SOURCE_MOD256;
break;
case 256:
temp |= DMA_RQ_C1_SOURCE_MOD128;
break;
case 128:
temp |= DMA_RQ_C1_SOURCE_MOD64;
break;
case 64:
temp |= DMA_RQ_C1_SOURCE_MOD32;
break;
case 32:
temp |= DMA_RQ_C1_SOURCE_MOD16;
break;
default:
dev_dbg(chip->card->dev,
"period size (%d) not supported by HW\n", period_size);
return -EINVAL;
}
snd_cs46xx_poke (chip,pcm_channel->pcm_reader_scb->address << 2,temp);
return 0;
}
int cs46xx_dsp_pcm_ostream_set_period (struct snd_cs46xx * chip,
int period_size)
{
u32 temp = snd_cs46xx_peek (chip,WRITEBACK_SCB_ADDR << 2);
temp &= ~DMA_RQ_C1_DEST_SIZE_MASK;
switch (period_size) {
case 2048:
temp |= DMA_RQ_C1_DEST_MOD1024;
break;
case 1024:
temp |= DMA_RQ_C1_DEST_MOD512;
break;
case 512:
temp |= DMA_RQ_C1_DEST_MOD256;
break;
case 256:
temp |= DMA_RQ_C1_DEST_MOD128;
break;
case 128:
temp |= DMA_RQ_C1_DEST_MOD64;
break;
case 64:
temp |= DMA_RQ_C1_DEST_MOD32;
break;
case 32:
temp |= DMA_RQ_C1_DEST_MOD16;
break;
default:
dev_dbg(chip->card->dev,
"period size (%d) not supported by HW\n", period_size);
return -EINVAL;
}
snd_cs46xx_poke (chip,WRITEBACK_SCB_ADDR << 2,temp);
return 0;
}
void cs46xx_dsp_destroy_pcm_channel (struct snd_cs46xx * chip,
struct dsp_pcm_channel_descriptor * pcm_channel)
{
struct dsp_spos_instance * ins = chip->dsp_spos_instance;
unsigned long flags;
if (snd_BUG_ON(!pcm_channel->active ||
ins->npcm_channels <= 0 ||
pcm_channel->src_scb->ref_count <= 0))
return;
spin_lock_irqsave(&chip->reg_lock, flags);
pcm_channel->unlinked = 1;
pcm_channel->active = 0;
pcm_channel->private_data = NULL;
pcm_channel->src_scb->ref_count --;
ins->npcm_channels --;
spin_unlock_irqrestore(&chip->reg_lock, flags);
cs46xx_dsp_remove_scb(chip,pcm_channel->pcm_reader_scb);
if (!pcm_channel->src_scb->ref_count) {
cs46xx_dsp_remove_scb(chip,pcm_channel->src_scb);
if (snd_BUG_ON(pcm_channel->src_slot < 0 ||
pcm_channel->src_slot >= DSP_MAX_SRC_NR))
return;
ins->src_scb_slots[pcm_channel->src_slot] = 0;
ins->nsrc_scb --;
}
}
int cs46xx_dsp_pcm_unlink (struct snd_cs46xx * chip,
struct dsp_pcm_channel_descriptor * pcm_channel)
{
unsigned long flags;
if (snd_BUG_ON(!pcm_channel->active ||
chip->dsp_spos_instance->npcm_channels <= 0))
return -EIO;
spin_lock_irqsave(&chip->reg_lock, flags);
if (pcm_channel->unlinked) {
spin_unlock_irqrestore(&chip->reg_lock, flags);
return -EIO;
}
pcm_channel->unlinked = 1;
_dsp_unlink_scb (chip,pcm_channel->pcm_reader_scb);
spin_unlock_irqrestore(&chip->reg_lock, flags);
return 0;
}
int cs46xx_dsp_pcm_link (struct snd_cs46xx * chip,
struct dsp_pcm_channel_descriptor * pcm_channel)
{
struct dsp_spos_instance * ins = chip->dsp_spos_instance;
struct dsp_scb_descriptor * parent_scb;
struct dsp_scb_descriptor * src_scb = pcm_channel->src_scb;
unsigned long flags;
spin_lock_irqsave(&chip->reg_lock, flags);
if (pcm_channel->unlinked == 0) {
spin_unlock_irqrestore(&chip->reg_lock, flags);
return -EIO;
}
parent_scb = src_scb;
if (src_scb->sub_list_ptr != ins->the_null_scb) {
src_scb->sub_list_ptr->parent_scb_ptr = pcm_channel->pcm_reader_scb;
pcm_channel->pcm_reader_scb->next_scb_ptr = src_scb->sub_list_ptr;
}
src_scb->sub_list_ptr = pcm_channel->pcm_reader_scb;
snd_BUG_ON(pcm_channel->pcm_reader_scb->parent_scb_ptr);
pcm_channel->pcm_reader_scb->parent_scb_ptr = parent_scb;
/* update SCB entry in DSP RAM */
cs46xx_dsp_spos_update_scb(chip,pcm_channel->pcm_reader_scb);
/* update parent SCB entry */
cs46xx_dsp_spos_update_scb(chip,parent_scb);
pcm_channel->unlinked = 0;
spin_unlock_irqrestore(&chip->reg_lock, flags);
return 0;
}
struct dsp_scb_descriptor *
cs46xx_add_record_source (struct snd_cs46xx *chip, struct dsp_scb_descriptor * source,
u16 addr, char * scb_name)
{
struct dsp_spos_instance * ins = chip->dsp_spos_instance;
struct dsp_scb_descriptor * parent;
struct dsp_scb_descriptor * pcm_input;
int insert_point;
if (snd_BUG_ON(!ins->record_mixer_scb))
return NULL;
if (ins->record_mixer_scb->sub_list_ptr != ins->the_null_scb) {
parent = find_next_free_scb (chip,ins->record_mixer_scb->sub_list_ptr);
insert_point = SCB_ON_PARENT_NEXT_SCB;
} else {
parent = ins->record_mixer_scb;
insert_point = SCB_ON_PARENT_SUBLIST_SCB;
}
pcm_input = cs46xx_dsp_create_pcm_serial_input_scb(chip,scb_name,addr,
source, parent,
insert_point);
return pcm_input;
}
int cs46xx_src_unlink(struct snd_cs46xx *chip, struct dsp_scb_descriptor * src)
{
unsigned long flags;
if (snd_BUG_ON(!src->parent_scb_ptr))
return -EINVAL;
/* mute SCB */
cs46xx_dsp_scb_set_volume (chip,src,0,0);
spin_lock_irqsave(&chip->reg_lock, flags);
_dsp_unlink_scb (chip,src);
spin_unlock_irqrestore(&chip->reg_lock, flags);
return 0;
}
int cs46xx_src_link(struct snd_cs46xx *chip, struct dsp_scb_descriptor * src)
{
struct dsp_spos_instance * ins = chip->dsp_spos_instance;
struct dsp_scb_descriptor * parent_scb;
if (snd_BUG_ON(src->parent_scb_ptr))
return -EINVAL;
if (snd_BUG_ON(!ins->master_mix_scb))
return -EINVAL;
if (ins->master_mix_scb->sub_list_ptr != ins->the_null_scb) {
parent_scb = find_next_free_scb (chip,ins->master_mix_scb->sub_list_ptr);
parent_scb->next_scb_ptr = src;
} else {
parent_scb = ins->master_mix_scb;
parent_scb->sub_list_ptr = src;
}
src->parent_scb_ptr = parent_scb;
/* update entry in DSP RAM */
cs46xx_dsp_spos_update_scb(chip,parent_scb);
return 0;
}
int cs46xx_dsp_enable_spdif_out (struct snd_cs46xx *chip)
{
struct dsp_spos_instance * ins = chip->dsp_spos_instance;
if ( ! (ins->spdif_status_out & DSP_SPDIF_STATUS_HW_ENABLED) ) {
cs46xx_dsp_enable_spdif_hw (chip);
}
/* dont touch anything if SPDIF is open */
if ( ins->spdif_status_out & DSP_SPDIF_STATUS_PLAYBACK_OPEN) {
/* when cs46xx_iec958_post_close(...) is called it
will call this function if necessary depending on
this bit */
ins->spdif_status_out |= DSP_SPDIF_STATUS_OUTPUT_ENABLED;
return -EBUSY;
}
if (snd_BUG_ON(ins->asynch_tx_scb))
return -EINVAL;
if (snd_BUG_ON(ins->master_mix_scb->next_scb_ptr !=
ins->the_null_scb))
return -EINVAL;
/* reset output snooper sample buffer pointer */
snd_cs46xx_poke (chip, (ins->ref_snoop_scb->address + 2) << 2,
(OUTPUT_SNOOP_BUFFER + 0x10) << 0x10 );
/* The asynch. transfer task */
ins->asynch_tx_scb = cs46xx_dsp_create_asynch_fg_tx_scb(chip,"AsynchFGTxSCB",ASYNCTX_SCB_ADDR,
SPDIFO_SCB_INST,
SPDIFO_IP_OUTPUT_BUFFER1,
ins->master_mix_scb,
SCB_ON_PARENT_NEXT_SCB);
if (!ins->asynch_tx_scb) return -ENOMEM;
ins->spdif_pcm_input_scb = cs46xx_dsp_create_pcm_serial_input_scb(chip,"PCMSerialInput_II",
PCMSERIALINII_SCB_ADDR,
ins->ref_snoop_scb,
ins->asynch_tx_scb,
SCB_ON_PARENT_SUBLIST_SCB);
if (!ins->spdif_pcm_input_scb) return -ENOMEM;
/* monitor state */
ins->spdif_status_out |= DSP_SPDIF_STATUS_OUTPUT_ENABLED;
return 0;
}
int cs46xx_dsp_disable_spdif_out (struct snd_cs46xx *chip)
{
struct dsp_spos_instance * ins = chip->dsp_spos_instance;
/* dont touch anything if SPDIF is open */
if ( ins->spdif_status_out & DSP_SPDIF_STATUS_PLAYBACK_OPEN) {
ins->spdif_status_out &= ~DSP_SPDIF_STATUS_OUTPUT_ENABLED;
return -EBUSY;
}
/* check integrety */
if (snd_BUG_ON(!ins->asynch_tx_scb))
return -EINVAL;
if (snd_BUG_ON(!ins->spdif_pcm_input_scb))
return -EINVAL;
if (snd_BUG_ON(ins->master_mix_scb->next_scb_ptr != ins->asynch_tx_scb))
return -EINVAL;
if (snd_BUG_ON(ins->asynch_tx_scb->parent_scb_ptr !=
ins->master_mix_scb))
return -EINVAL;
cs46xx_dsp_remove_scb (chip,ins->spdif_pcm_input_scb);
cs46xx_dsp_remove_scb (chip,ins->asynch_tx_scb);
ins->spdif_pcm_input_scb = NULL;
ins->asynch_tx_scb = NULL;
/* clear buffer to prevent any undesired noise */
_dsp_clear_sample_buffer(chip,SPDIFO_IP_OUTPUT_BUFFER1,256);
/* monitor state */
ins->spdif_status_out &= ~DSP_SPDIF_STATUS_OUTPUT_ENABLED;
return 0;
}
int cs46xx_iec958_pre_open (struct snd_cs46xx *chip)
{
struct dsp_spos_instance * ins = chip->dsp_spos_instance;
if ( ins->spdif_status_out & DSP_SPDIF_STATUS_OUTPUT_ENABLED ) {
/* remove AsynchFGTxSCB and and PCMSerialInput_II */
cs46xx_dsp_disable_spdif_out (chip);
/* save state */
ins->spdif_status_out |= DSP_SPDIF_STATUS_OUTPUT_ENABLED;
}
/* if not enabled already */
if ( !(ins->spdif_status_out & DSP_SPDIF_STATUS_HW_ENABLED) ) {
cs46xx_dsp_enable_spdif_hw (chip);
}
/* Create the asynch. transfer task for playback */
ins->asynch_tx_scb = cs46xx_dsp_create_asynch_fg_tx_scb(chip,"AsynchFGTxSCB",ASYNCTX_SCB_ADDR,
SPDIFO_SCB_INST,
SPDIFO_IP_OUTPUT_BUFFER1,
ins->master_mix_scb,
SCB_ON_PARENT_NEXT_SCB);
/* set spdif channel status value for streaming */
cs46xx_poke_via_dsp (chip,SP_SPDOUT_CSUV, ins->spdif_csuv_stream);
ins->spdif_status_out |= DSP_SPDIF_STATUS_PLAYBACK_OPEN;
return 0;
}
int cs46xx_iec958_post_close (struct snd_cs46xx *chip)
{
struct dsp_spos_instance * ins = chip->dsp_spos_instance;
if (snd_BUG_ON(!ins->asynch_tx_scb))
return -EINVAL;
ins->spdif_status_out &= ~DSP_SPDIF_STATUS_PLAYBACK_OPEN;
/* restore settings */
cs46xx_poke_via_dsp (chip,SP_SPDOUT_CSUV, ins->spdif_csuv_default);
/* deallocate stuff */
if (ins->spdif_pcm_input_scb != NULL) {
cs46xx_dsp_remove_scb (chip,ins->spdif_pcm_input_scb);
ins->spdif_pcm_input_scb = NULL;
}
cs46xx_dsp_remove_scb (chip,ins->asynch_tx_scb);
ins->asynch_tx_scb = NULL;
/* clear buffer to prevent any undesired noise */
_dsp_clear_sample_buffer(chip,SPDIFO_IP_OUTPUT_BUFFER1,256);
/* restore state */
if ( ins->spdif_status_out & DSP_SPDIF_STATUS_OUTPUT_ENABLED ) {
cs46xx_dsp_enable_spdif_out (chip);
}
return 0;
}
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