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linux/sound/pci/emu10k1/p16v.c
Markus Elfring a827977ac3 ALSA: emu10k1: Delete an unnecessary check before the function call "kfree" 
The kfree() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-04 15:12:08 +01:00

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/*
* Copyright (c) by James Courtier-Dutton <James@superbug.demon.co.uk>
* Driver p16v chips
* Version: 0.25
*
* FEATURES currently supported:
* Output fixed at S32_LE, 2 channel to hw:0,0
* Rates: 44.1, 48, 96, 192.
*
* Changelog:
* 0.8
* Use separate card based buffer for periods table.
* 0.9
* Use 2 channel output streams instead of 8 channel.
* (8 channel output streams might be good for ASIO type output)
* Corrected speaker output, so Front -> Front etc.
* 0.10
* Fixed missed interrupts.
* 0.11
* Add Sound card model number and names.
* Add Analog volume controls.
* 0.12
* Corrected playback interrupts. Now interrupt per period, instead of half period.
* 0.13
* Use single trigger for multichannel.
* 0.14
* Mic capture now works at fixed: S32_LE, 96000Hz, Stereo.
* 0.15
* Force buffer_size / period_size == INTEGER.
* 0.16
* Update p16v.c to work with changed alsa api.
* 0.17
* Update p16v.c to work with changed alsa api. Removed boot_devs.
* 0.18
* Merging with snd-emu10k1 driver.
* 0.19
* One stereo channel at 24bit now works.
* 0.20
* Added better register defines.
* 0.21
* Integrated with snd-emu10k1 driver.
* 0.22
* Removed #if 0 ... #endif
* 0.23
* Implement different capture rates.
* 0.24
* Implement different capture source channels.
* e.g. When HD Capture source is set to SPDIF,
* setting HD Capture channel to 0 captures from CDROM digital input.
* setting HD Capture channel to 1 captures from SPDIF in.
* 0.25
* Include capture buffer sizes.
*
* BUGS:
* Some stability problems when unloading the snd-p16v kernel module.
* --
*
* TODO:
* SPDIF out.
* Find out how to change capture sample rates. E.g. To record SPDIF at 48000Hz.
* Currently capture fixed at 48000Hz.
*
* --
* GENERAL INFO:
* Model: SB0240
* P16V Chip: CA0151-DBS
* Audigy 2 Chip: CA0102-IAT
* AC97 Codec: STAC 9721
* ADC: Philips 1361T (Stereo 24bit)
* DAC: CS4382-K (8-channel, 24bit, 192Khz)
*
* This code was initially based on code from ALSA's emu10k1x.c which is:
* Copyright (c) by Francisco Moraes <fmoraes@nc.rr.com>
*
* 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
*
*/
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/moduleparam.h>
#include <sound/core.h>
#include <sound/initval.h>
#include <sound/pcm.h>
#include <sound/ac97_codec.h>
#include <sound/info.h>
#include <sound/tlv.h>
#include <sound/emu10k1.h>
#include "p16v.h"
#define SET_CHANNEL 0 /* Testing channel outputs 0=Front, 1=Center/LFE, 2=Unknown, 3=Rear */
#define PCM_FRONT_CHANNEL 0
#define PCM_REAR_CHANNEL 1
#define PCM_CENTER_LFE_CHANNEL 2
#define PCM_SIDE_CHANNEL 3
#define CONTROL_FRONT_CHANNEL 0
#define CONTROL_REAR_CHANNEL 3
#define CONTROL_CENTER_LFE_CHANNEL 1
#define CONTROL_SIDE_CHANNEL 2
/* Card IDs:
* Class 0401: 1102:0004 (rev 04) Subsystem: 1102:2002 -> Audigy2 ZS 7.1 Model:SB0350
* Class 0401: 1102:0004 (rev 04) Subsystem: 1102:1007 -> Audigy2 6.1 Model:SB0240
* Class 0401: 1102:0004 (rev 04) Subsystem: 1102:1002 -> Audigy2 Platinum Model:SB msb0240230009266
* Class 0401: 1102:0004 (rev 04) Subsystem: 1102:2007 -> Audigy4 Pro Model:SB0380 M1SB0380472001901E
*
*/
/* hardware definition */
static struct snd_pcm_hardware snd_p16v_playback_hw = {
.info = SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_RESUME |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_SYNC_START,
.formats = SNDRV_PCM_FMTBIT_S32_LE, /* Only supports 24-bit samples padded to 32 bits. */
.rates = SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100,
.rate_min = 44100,
.rate_max = 192000,
.channels_min = 8,
.channels_max = 8,
.buffer_bytes_max = ((65536 - 64) * 8),
.period_bytes_min = 64,
.period_bytes_max = (65536 - 64),
.periods_min = 2,
.periods_max = 8,
.fifo_size = 0,
};
static struct snd_pcm_hardware snd_p16v_capture_hw = {
.info = (SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_RESUME |
SNDRV_PCM_INFO_MMAP_VALID),
.formats = SNDRV_PCM_FMTBIT_S32_LE,
.rates = SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100,
.rate_min = 44100,
.rate_max = 192000,
.channels_min = 2,
.channels_max = 2,
.buffer_bytes_max = (65536 - 64),
.period_bytes_min = 64,
.period_bytes_max = (65536 - 128) >> 1, /* size has to be N*64 bytes */
.periods_min = 2,
.periods_max = 2,
.fifo_size = 0,
};
static void snd_p16v_pcm_free_substream(struct snd_pcm_runtime *runtime)
{
struct snd_emu10k1_pcm *epcm = runtime->private_data;
kfree(epcm);
}
/* open_playback callback */
static int snd_p16v_pcm_open_playback_channel(struct snd_pcm_substream *substream, int channel_id)
{
struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
struct snd_emu10k1_voice *channel = &(emu->p16v_voices[channel_id]);
struct snd_emu10k1_pcm *epcm;
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
/* dev_dbg(emu->card->dev, "epcm kcalloc: %p\n", epcm); */
if (epcm == NULL)
return -ENOMEM;
epcm->emu = emu;
epcm->substream = substream;
/*
dev_dbg(emu->card->dev, "epcm device=%d, channel_id=%d\n",
substream->pcm->device, channel_id);
*/
runtime->private_data = epcm;
runtime->private_free = snd_p16v_pcm_free_substream;
runtime->hw = snd_p16v_playback_hw;
channel->emu = emu;
channel->number = channel_id;
channel->use=1;
#if 0 /* debug */
dev_dbg(emu->card->dev,
"p16v: open channel_id=%d, channel=%p, use=0x%x\n",
channel_id, channel, channel->use);
dev_dbg(emu->card->dev, "open:channel_id=%d, chip=%p, channel=%p\n",
channel_id, chip, channel);
#endif /* debug */
/* channel->interrupt = snd_p16v_pcm_channel_interrupt; */
channel->epcm = epcm;
if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
return err;
runtime->sync.id32[0] = substream->pcm->card->number;
runtime->sync.id32[1] = 'P';
runtime->sync.id32[2] = 16;
runtime->sync.id32[3] = 'V';
return 0;
}
/* open_capture callback */
static int snd_p16v_pcm_open_capture_channel(struct snd_pcm_substream *substream, int channel_id)
{
struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
struct snd_emu10k1_voice *channel = &(emu->p16v_capture_voice);
struct snd_emu10k1_pcm *epcm;
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
/* dev_dbg(emu->card->dev, "epcm kcalloc: %p\n", epcm); */
if (epcm == NULL)
return -ENOMEM;
epcm->emu = emu;
epcm->substream = substream;
/*
dev_dbg(emu->card->dev, "epcm device=%d, channel_id=%d\n",
substream->pcm->device, channel_id);
*/
runtime->private_data = epcm;
runtime->private_free = snd_p16v_pcm_free_substream;
runtime->hw = snd_p16v_capture_hw;
channel->emu = emu;
channel->number = channel_id;
channel->use=1;
#if 0 /* debug */
dev_dbg(emu->card->dev,
"p16v: open channel_id=%d, channel=%p, use=0x%x\n",
channel_id, channel, channel->use);
dev_dbg(emu->card->dev, "open:channel_id=%d, chip=%p, channel=%p\n",
channel_id, chip, channel);
#endif /* debug */
/* channel->interrupt = snd_p16v_pcm_channel_interrupt; */
channel->epcm = epcm;
if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
return err;
return 0;
}
/* close callback */
static int snd_p16v_pcm_close_playback(struct snd_pcm_substream *substream)
{
struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
//struct snd_pcm_runtime *runtime = substream->runtime;
//struct snd_emu10k1_pcm *epcm = runtime->private_data;
emu->p16v_voices[substream->pcm->device - emu->p16v_device_offset].use = 0;
/* FIXME: maybe zero others */
return 0;
}
/* close callback */
static int snd_p16v_pcm_close_capture(struct snd_pcm_substream *substream)
{
struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
//struct snd_pcm_runtime *runtime = substream->runtime;
//struct snd_emu10k1_pcm *epcm = runtime->private_data;
emu->p16v_capture_voice.use = 0;
/* FIXME: maybe zero others */
return 0;
}
static int snd_p16v_pcm_open_playback_front(struct snd_pcm_substream *substream)
{
return snd_p16v_pcm_open_playback_channel(substream, PCM_FRONT_CHANNEL);
}
static int snd_p16v_pcm_open_capture(struct snd_pcm_substream *substream)
{
// Only using channel 0 for now, but the card has 2 channels.
return snd_p16v_pcm_open_capture_channel(substream, 0);
}
/* hw_params callback */
static int snd_p16v_pcm_hw_params_playback(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
int result;
result = snd_pcm_lib_malloc_pages(substream,
params_buffer_bytes(hw_params));
return result;
}
/* hw_params callback */
static int snd_p16v_pcm_hw_params_capture(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
int result;
result = snd_pcm_lib_malloc_pages(substream,
params_buffer_bytes(hw_params));
return result;
}
/* hw_free callback */
static int snd_p16v_pcm_hw_free_playback(struct snd_pcm_substream *substream)
{
int result;
result = snd_pcm_lib_free_pages(substream);
return result;
}
/* hw_free callback */
static int snd_p16v_pcm_hw_free_capture(struct snd_pcm_substream *substream)
{
int result;
result = snd_pcm_lib_free_pages(substream);
return result;
}
/* prepare playback callback */
static int snd_p16v_pcm_prepare_playback(struct snd_pcm_substream *substream)
{
struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
int channel = substream->pcm->device - emu->p16v_device_offset;
u32 *table_base = (u32 *)(emu->p16v_buffer.area+(8*16*channel));
u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
int i;
u32 tmp;
#if 0 /* debug */
dev_dbg(emu->card->dev,
"prepare:channel_number=%d, rate=%d, "
"format=0x%x, channels=%d, buffer_size=%ld, "
"period_size=%ld, periods=%u, frames_to_bytes=%d\n",
channel, runtime->rate, runtime->format, runtime->channels,
runtime->buffer_size, runtime->period_size,
runtime->periods, frames_to_bytes(runtime, 1));
dev_dbg(emu->card->dev,
"dma_addr=%x, dma_area=%p, table_base=%p\n",
runtime->dma_addr, runtime->dma_area, table_base);
dev_dbg(emu->card->dev,
"dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",
emu->p16v_buffer.addr, emu->p16v_buffer.area,
emu->p16v_buffer.bytes);
#endif /* debug */
tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
switch (runtime->rate) {
case 44100:
snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x8080);
break;
case 96000:
snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x4040);
break;
case 192000:
snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x2020);
break;
case 48000:
default:
snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x0000);
break;
}
/* FIXME: Check emu->buffer.size before actually writing to it. */
for(i = 0; i < runtime->periods; i++) {
table_base[i*2]=runtime->dma_addr+(i*period_size_bytes);
table_base[(i*2)+1]=period_size_bytes<<16;
}
snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_ADDR, channel, emu->p16v_buffer.addr+(8*16*channel));
snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_SIZE, channel, (runtime->periods - 1) << 19);
snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_PTR, channel, 0);
snd_emu10k1_ptr20_write(emu, PLAYBACK_DMA_ADDR, channel, runtime->dma_addr);
//snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, frames_to_bytes(runtime, runtime->period_size)<<16); // buffer size in bytes
snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, 0); // buffer size in bytes
snd_emu10k1_ptr20_write(emu, PLAYBACK_POINTER, channel, 0);
snd_emu10k1_ptr20_write(emu, 0x07, channel, 0x0);
snd_emu10k1_ptr20_write(emu, 0x08, channel, 0);
return 0;
}
/* prepare capture callback */
static int snd_p16v_pcm_prepare_capture(struct snd_pcm_substream *substream)
{
struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
int channel = substream->pcm->device - emu->p16v_device_offset;
u32 tmp;
/*
dev_dbg(emu->card->dev, "prepare capture:channel_number=%d, rate=%d, "
"format=0x%x, channels=%d, buffer_size=%ld, period_size=%ld, "
"frames_to_bytes=%d\n",
channel, runtime->rate, runtime->format, runtime->channels,
runtime->buffer_size, runtime->period_size,
frames_to_bytes(runtime, 1));
*/
tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
switch (runtime->rate) {
case 44100:
snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0800);
break;
case 96000:
snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0400);
break;
case 192000:
snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0200);
break;
case 48000:
default:
snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0000);
break;
}
/* FIXME: Check emu->buffer.size before actually writing to it. */
snd_emu10k1_ptr20_write(emu, 0x13, channel, 0);
snd_emu10k1_ptr20_write(emu, CAPTURE_DMA_ADDR, channel, runtime->dma_addr);
snd_emu10k1_ptr20_write(emu, CAPTURE_BUFFER_SIZE, channel, frames_to_bytes(runtime, runtime->buffer_size) << 16); // buffer size in bytes
snd_emu10k1_ptr20_write(emu, CAPTURE_POINTER, channel, 0);
//snd_emu10k1_ptr20_write(emu, CAPTURE_SOURCE, 0x0, 0x333300e4); /* Select MIC or Line in */
//snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) | (0x110000<<channel));
return 0;
}
static void snd_p16v_intr_enable(struct snd_emu10k1 *emu, unsigned int intrenb)
{
unsigned long flags;
unsigned int enable;
spin_lock_irqsave(&emu->emu_lock, flags);
enable = inl(emu->port + INTE2) | intrenb;
outl(enable, emu->port + INTE2);
spin_unlock_irqrestore(&emu->emu_lock, flags);
}
static void snd_p16v_intr_disable(struct snd_emu10k1 *emu, unsigned int intrenb)
{
unsigned long flags;
unsigned int disable;
spin_lock_irqsave(&emu->emu_lock, flags);
disable = inl(emu->port + INTE2) & (~intrenb);
outl(disable, emu->port + INTE2);
spin_unlock_irqrestore(&emu->emu_lock, flags);
}
/* trigger_playback callback */
static int snd_p16v_pcm_trigger_playback(struct snd_pcm_substream *substream,
int cmd)
{
struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime;
struct snd_emu10k1_pcm *epcm;
int channel;
int result = 0;
struct snd_pcm_substream *s;
u32 basic = 0;
u32 inte = 0;
int running = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
running=1;
break;
case SNDRV_PCM_TRIGGER_STOP:
default:
running = 0;
break;
}
snd_pcm_group_for_each_entry(s, substream) {
if (snd_pcm_substream_chip(s) != emu ||
s->stream != SNDRV_PCM_STREAM_PLAYBACK)
continue;
runtime = s->runtime;
epcm = runtime->private_data;
channel = substream->pcm->device-emu->p16v_device_offset;
/* dev_dbg(emu->card->dev, "p16v channel=%d\n", channel); */
epcm->running = running;
basic |= (0x1<<channel);
inte |= (INTE2_PLAYBACK_CH_0_LOOP<<channel);
snd_pcm_trigger_done(s, substream);
}
/* dev_dbg(emu->card->dev, "basic=0x%x, inte=0x%x\n", basic, inte); */
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
snd_p16v_intr_enable(emu, inte);
snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)| (basic));
break;
case SNDRV_PCM_TRIGGER_STOP:
snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(basic));
snd_p16v_intr_disable(emu, inte);
break;
default:
result = -EINVAL;
break;
}
return result;
}
/* trigger_capture callback */
static int snd_p16v_pcm_trigger_capture(struct snd_pcm_substream *substream,
int cmd)
{
struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_emu10k1_pcm *epcm = runtime->private_data;
int channel = 0;
int result = 0;
u32 inte = INTE2_CAPTURE_CH_0_LOOP | INTE2_CAPTURE_CH_0_HALF_LOOP;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
snd_p16v_intr_enable(emu, inte);
snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)|(0x100<<channel));
epcm->running = 1;
break;
case SNDRV_PCM_TRIGGER_STOP:
snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(0x100<<channel));
snd_p16v_intr_disable(emu, inte);
//snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) & ~(0x110000<<channel));
epcm->running = 0;
break;
default:
result = -EINVAL;
break;
}
return result;
}
/* pointer_playback callback */
static snd_pcm_uframes_t
snd_p16v_pcm_pointer_playback(struct snd_pcm_substream *substream)
{
struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_emu10k1_pcm *epcm = runtime->private_data;
snd_pcm_uframes_t ptr, ptr1, ptr2,ptr3,ptr4 = 0;
int channel = substream->pcm->device - emu->p16v_device_offset;
if (!epcm->running)
return 0;
ptr3 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
ptr4 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
if (ptr3 != ptr4) ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
ptr2 = bytes_to_frames(runtime, ptr1);
ptr2+= (ptr4 >> 3) * runtime->period_size;
ptr=ptr2;
if (ptr >= runtime->buffer_size)
ptr -= runtime->buffer_size;
return ptr;
}
/* pointer_capture callback */
static snd_pcm_uframes_t
snd_p16v_pcm_pointer_capture(struct snd_pcm_substream *substream)
{
struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_emu10k1_pcm *epcm = runtime->private_data;
snd_pcm_uframes_t ptr, ptr1, ptr2 = 0;
int channel = 0;
if (!epcm->running)
return 0;
ptr1 = snd_emu10k1_ptr20_read(emu, CAPTURE_POINTER, channel);
ptr2 = bytes_to_frames(runtime, ptr1);
ptr=ptr2;
if (ptr >= runtime->buffer_size) {
ptr -= runtime->buffer_size;
dev_warn(emu->card->dev, "buffer capture limited!\n");
}
/*
dev_dbg(emu->card->dev, "ptr1 = 0x%lx, ptr2=0x%lx, ptr=0x%lx, "
"buffer_size = 0x%x, period_size = 0x%x, bits=%d, rate=%d\n",
ptr1, ptr2, ptr, (int)runtime->buffer_size,
(int)runtime->period_size, (int)runtime->frame_bits,
(int)runtime->rate);
*/
return ptr;
}
/* operators */
static struct snd_pcm_ops snd_p16v_playback_front_ops = {
.open = snd_p16v_pcm_open_playback_front,
.close = snd_p16v_pcm_close_playback,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_p16v_pcm_hw_params_playback,
.hw_free = snd_p16v_pcm_hw_free_playback,
.prepare = snd_p16v_pcm_prepare_playback,
.trigger = snd_p16v_pcm_trigger_playback,
.pointer = snd_p16v_pcm_pointer_playback,
};
static struct snd_pcm_ops snd_p16v_capture_ops = {
.open = snd_p16v_pcm_open_capture,
.close = snd_p16v_pcm_close_capture,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_p16v_pcm_hw_params_capture,
.hw_free = snd_p16v_pcm_hw_free_capture,
.prepare = snd_p16v_pcm_prepare_capture,
.trigger = snd_p16v_pcm_trigger_capture,
.pointer = snd_p16v_pcm_pointer_capture,
};
int snd_p16v_free(struct snd_emu10k1 *chip)
{
// release the data
if (chip->p16v_buffer.area) {
snd_dma_free_pages(&chip->p16v_buffer);
/*
dev_dbg(chip->card->dev, "period lables free: %p\n",
&chip->p16v_buffer);
*/
}
return 0;
}
int snd_p16v_pcm(struct snd_emu10k1 *emu, int device)
{
struct snd_pcm *pcm;
struct snd_pcm_substream *substream;
int err;
int capture=1;
/* dev_dbg(emu->card->dev, "snd_p16v_pcm called. device=%d\n", device); */
emu->p16v_device_offset = device;
if ((err = snd_pcm_new(emu->card, "p16v", device, 1, capture, &pcm)) < 0)
return err;
pcm->private_data = emu;
// Single playback 8 channel device.
// Single capture 2 channel device.
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_p16v_playback_front_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_p16v_capture_ops);
pcm->info_flags = 0;
pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
strcpy(pcm->name, "p16v");
emu->pcm_p16v = pcm;
for(substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
substream;
substream = substream->next) {
if ((err = snd_pcm_lib_preallocate_pages(substream,
SNDRV_DMA_TYPE_DEV,
snd_dma_pci_data(emu->pci),
((65536 - 64) * 8), ((65536 - 64) * 8))) < 0)
return err;
/*
dev_dbg(emu->card->dev,
"preallocate playback substream: err=%d\n", err);
*/
}
for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
substream;
substream = substream->next) {
if ((err = snd_pcm_lib_preallocate_pages(substream,
SNDRV_DMA_TYPE_DEV,
snd_dma_pci_data(emu->pci),
65536 - 64, 65536 - 64)) < 0)
return err;
/*
dev_dbg(emu->card->dev,
"preallocate capture substream: err=%d\n", err);
*/
}
return 0;
}
static int snd_p16v_volume_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 2;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = 255;
return 0;
}
static int snd_p16v_volume_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
int high_low = (kcontrol->private_value >> 8) & 0xff;
int reg = kcontrol->private_value & 0xff;
u32 value;
value = snd_emu10k1_ptr20_read(emu, reg, high_low);
if (high_low) {
ucontrol->value.integer.value[0] = 0xff - ((value >> 24) & 0xff); /* Left */
ucontrol->value.integer.value[1] = 0xff - ((value >> 16) & 0xff); /* Right */
} else {
ucontrol->value.integer.value[0] = 0xff - ((value >> 8) & 0xff); /* Left */
ucontrol->value.integer.value[1] = 0xff - ((value >> 0) & 0xff); /* Right */
}
return 0;
}
static int snd_p16v_volume_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
int high_low = (kcontrol->private_value >> 8) & 0xff;
int reg = kcontrol->private_value & 0xff;
u32 value, oval;
oval = value = snd_emu10k1_ptr20_read(emu, reg, 0);
if (high_low == 1) {
value &= 0xffff;
value |= ((0xff - ucontrol->value.integer.value[0]) << 24) |
((0xff - ucontrol->value.integer.value[1]) << 16);
} else {
value &= 0xffff0000;
value |= ((0xff - ucontrol->value.integer.value[0]) << 8) |
((0xff - ucontrol->value.integer.value[1]) );
}
if (value != oval) {
snd_emu10k1_ptr20_write(emu, reg, 0, value);
return 1;
}
return 0;
}
static int snd_p16v_capture_source_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
static const char * const texts[8] = {
"SPDIF", "I2S", "SRC48", "SRCMulti_SPDIF", "SRCMulti_I2S",
"CDIF", "FX", "AC97"
};
return snd_ctl_enum_info(uinfo, 1, 8, texts);
}
static int snd_p16v_capture_source_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
ucontrol->value.enumerated.item[0] = emu->p16v_capture_source;
return 0;
}
static int snd_p16v_capture_source_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
unsigned int val;
int change = 0;
u32 mask;
u32 source;
val = ucontrol->value.enumerated.item[0] ;
if (val > 7)
return -EINVAL;
change = (emu->p16v_capture_source != val);
if (change) {
emu->p16v_capture_source = val;
source = (val << 28) | (val << 24) | (val << 20) | (val << 16);
mask = snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & 0xffff;
snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, source | mask);
}
return change;
}
static int snd_p16v_capture_channel_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
static const char * const texts[4] = { "0", "1", "2", "3", };
return snd_ctl_enum_info(uinfo, 1, 4, texts);
}
static int snd_p16v_capture_channel_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
ucontrol->value.enumerated.item[0] = emu->p16v_capture_channel;
return 0;
}
static int snd_p16v_capture_channel_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
unsigned int val;
int change = 0;
u32 tmp;
val = ucontrol->value.enumerated.item[0] ;
if (val > 3)
return -EINVAL;
change = (emu->p16v_capture_channel != val);
if (change) {
emu->p16v_capture_channel = val;
tmp = snd_emu10k1_ptr20_read(emu, CAPTURE_P16V_SOURCE, 0) & 0xfffc;
snd_emu10k1_ptr20_write(emu, CAPTURE_P16V_SOURCE, 0, tmp | val);
}
return change;
}
static const DECLARE_TLV_DB_SCALE(snd_p16v_db_scale1, -5175, 25, 1);
#define P16V_VOL(xname,xreg,xhl) { \
.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE | \
SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
.info = snd_p16v_volume_info, \
.get = snd_p16v_volume_get, \
.put = snd_p16v_volume_put, \
.tlv = { .p = snd_p16v_db_scale1 }, \
.private_value = ((xreg) | ((xhl) << 8)) \
}
static struct snd_kcontrol_new p16v_mixer_controls[] = {
P16V_VOL("HD Analog Front Playback Volume", PLAYBACK_VOLUME_MIXER9, 0),
P16V_VOL("HD Analog Rear Playback Volume", PLAYBACK_VOLUME_MIXER10, 1),
P16V_VOL("HD Analog Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER9, 1),
P16V_VOL("HD Analog Side Playback Volume", PLAYBACK_VOLUME_MIXER10, 0),
P16V_VOL("HD SPDIF Front Playback Volume", PLAYBACK_VOLUME_MIXER7, 0),
P16V_VOL("HD SPDIF Rear Playback Volume", PLAYBACK_VOLUME_MIXER8, 1),
P16V_VOL("HD SPDIF Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER7, 1),
P16V_VOL("HD SPDIF Side Playback Volume", PLAYBACK_VOLUME_MIXER8, 0),
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "HD source Capture",
.info = snd_p16v_capture_source_info,
.get = snd_p16v_capture_source_get,
.put = snd_p16v_capture_source_put
},
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "HD channel Capture",
.info = snd_p16v_capture_channel_info,
.get = snd_p16v_capture_channel_get,
.put = snd_p16v_capture_channel_put
},
};
int snd_p16v_mixer(struct snd_emu10k1 *emu)
{
int i, err;
struct snd_card *card = emu->card;
for (i = 0; i < ARRAY_SIZE(p16v_mixer_controls); i++) {
if ((err = snd_ctl_add(card, snd_ctl_new1(&p16v_mixer_controls[i],
emu))) < 0)
return err;
}
return 0;
}
#ifdef CONFIG_PM_SLEEP
#define NUM_CHS 1 /* up to 4, but only first channel is used */
int snd_p16v_alloc_pm_buffer(struct snd_emu10k1 *emu)
{
emu->p16v_saved = vmalloc(NUM_CHS * 4 * 0x80);
if (! emu->p16v_saved)
return -ENOMEM;
return 0;
}
void snd_p16v_free_pm_buffer(struct snd_emu10k1 *emu)
{
vfree(emu->p16v_saved);
}
void snd_p16v_suspend(struct snd_emu10k1 *emu)
{
int i, ch;
unsigned int *val;
val = emu->p16v_saved;
for (ch = 0; ch < NUM_CHS; ch++)
for (i = 0; i < 0x80; i++, val++)
*val = snd_emu10k1_ptr20_read(emu, i, ch);
}
void snd_p16v_resume(struct snd_emu10k1 *emu)
{
int i, ch;
unsigned int *val;
val = emu->p16v_saved;
for (ch = 0; ch < NUM_CHS; ch++)
for (i = 0; i < 0x80; i++, val++)
snd_emu10k1_ptr20_write(emu, i, ch, *val);
}
#endif
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