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linux/sound/pci/emu10k1/emu10k1x.c
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00

1639 lines
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/*
* Copyright (c) by Francisco Moraes <fmoraes@nc.rr.com>
* Driver EMU10K1X chips
*
* Parts of this code were adapted from audigyls.c driver which is
* Copyright (c) by James Courtier-Dutton <James@superbug.demon.co.uk>
*
* BUGS:
* --
*
* TODO:
*
* Chips (SB0200 model):
* - EMU10K1X-DBQ
* - STAC 9708T
*
* 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 <sound/driver.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/slab.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/rawmidi.h>
MODULE_AUTHOR("Francisco Moraes <fmoraes@nc.rr.com>");
MODULE_DESCRIPTION("EMU10K1X");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Dell Creative Labs,SB Live!}");
// module parameters (see "Module Parameters")
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for the EMU10K1X soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for the EMU10K1X soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable the EMU10K1X soundcard.");
// some definitions were borrowed from emu10k1 driver as they seem to be the same
/************************************************************************************************/
/* PCI function 0 registers, address = <val> + PCIBASE0 */
/************************************************************************************************/
#define PTR 0x00 /* Indexed register set pointer register */
/* NOTE: The CHANNELNUM and ADDRESS words can */
/* be modified independently of each other. */
#define DATA 0x04 /* Indexed register set data register */
#define IPR 0x08 /* Global interrupt pending register */
/* Clear pending interrupts by writing a 1 to */
/* the relevant bits and zero to the other bits */
#define IPR_MIDITRANSBUFEMPTY 0x00000001 /* MIDI UART transmit buffer empty */
#define IPR_MIDIRECVBUFEMPTY 0x00000002 /* MIDI UART receive buffer empty */
#define IPR_CH_0_LOOP 0x00000800 /* Channel 0 loop */
#define IPR_CH_0_HALF_LOOP 0x00000100 /* Channel 0 half loop */
#define IPR_CAP_0_LOOP 0x00080000 /* Channel capture loop */
#define IPR_CAP_0_HALF_LOOP 0x00010000 /* Channel capture half loop */
#define INTE 0x0c /* Interrupt enable register */
#define INTE_MIDITXENABLE 0x00000001 /* Enable MIDI transmit-buffer-empty interrupts */
#define INTE_MIDIRXENABLE 0x00000002 /* Enable MIDI receive-buffer-empty interrupts */
#define INTE_CH_0_LOOP 0x00000800 /* Channel 0 loop */
#define INTE_CH_0_HALF_LOOP 0x00000100 /* Channel 0 half loop */
#define INTE_CAP_0_LOOP 0x00080000 /* Channel capture loop */
#define INTE_CAP_0_HALF_LOOP 0x00010000 /* Channel capture half loop */
#define HCFG 0x14 /* Hardware config register */
#define HCFG_LOCKSOUNDCACHE 0x00000008 /* 1 = Cancel bustmaster accesses to soundcache */
/* NOTE: This should generally never be used. */
#define HCFG_AUDIOENABLE 0x00000001 /* 0 = CODECs transmit zero-valued samples */
/* Should be set to 1 when the EMU10K1 is */
/* completely initialized. */
#define GPIO 0x18 /* Defaults: 00001080-Analog, 00001000-SPDIF. */
#define AC97DATA 0x1c /* AC97 register set data register (16 bit) */
#define AC97ADDRESS 0x1e /* AC97 register set address register (8 bit) */
/********************************************************************************************************/
/* Emu10k1x pointer-offset register set, accessed through the PTR and DATA registers */
/********************************************************************************************************/
#define PLAYBACK_LIST_ADDR 0x00 /* Base DMA address of a list of pointers to each period/size */
/* One list entry: 4 bytes for DMA address,
* 4 bytes for period_size << 16.
* One list entry is 8 bytes long.
* One list entry for each period in the buffer.
*/
#define PLAYBACK_LIST_SIZE 0x01 /* Size of list in bytes << 16. E.g. 8 periods -> 0x00380000 */
#define PLAYBACK_LIST_PTR 0x02 /* Pointer to the current period being played */
#define PLAYBACK_DMA_ADDR 0x04 /* Playback DMA addresss */
#define PLAYBACK_PERIOD_SIZE 0x05 /* Playback period size */
#define PLAYBACK_POINTER 0x06 /* Playback period pointer. Sample currently in DAC */
#define PLAYBACK_UNKNOWN1 0x07
#define PLAYBACK_UNKNOWN2 0x08
/* Only one capture channel supported */
#define CAPTURE_DMA_ADDR 0x10 /* Capture DMA address */
#define CAPTURE_BUFFER_SIZE 0x11 /* Capture buffer size */
#define CAPTURE_POINTER 0x12 /* Capture buffer pointer. Sample currently in ADC */
#define CAPTURE_UNKNOWN 0x13
/* From 0x20 - 0x3f, last samples played on each channel */
#define TRIGGER_CHANNEL 0x40 /* Trigger channel playback */
#define TRIGGER_CHANNEL_0 0x00000001 /* Trigger channel 0 */
#define TRIGGER_CHANNEL_1 0x00000002 /* Trigger channel 1 */
#define TRIGGER_CHANNEL_2 0x00000004 /* Trigger channel 2 */
#define TRIGGER_CAPTURE 0x00000100 /* Trigger capture channel */
#define ROUTING 0x41 /* Setup sound routing ? */
#define ROUTING_FRONT_LEFT 0x00000001
#define ROUTING_FRONT_RIGHT 0x00000002
#define ROUTING_REAR_LEFT 0x00000004
#define ROUTING_REAR_RIGHT 0x00000008
#define ROUTING_CENTER_LFE 0x00010000
#define SPCS0 0x42 /* SPDIF output Channel Status 0 register */
#define SPCS1 0x43 /* SPDIF output Channel Status 1 register */
#define SPCS2 0x44 /* SPDIF output Channel Status 2 register */
#define SPCS_CLKACCYMASK 0x30000000 /* Clock accuracy */
#define SPCS_CLKACCY_1000PPM 0x00000000 /* 1000 parts per million */
#define SPCS_CLKACCY_50PPM 0x10000000 /* 50 parts per million */
#define SPCS_CLKACCY_VARIABLE 0x20000000 /* Variable accuracy */
#define SPCS_SAMPLERATEMASK 0x0f000000 /* Sample rate */
#define SPCS_SAMPLERATE_44 0x00000000 /* 44.1kHz sample rate */
#define SPCS_SAMPLERATE_48 0x02000000 /* 48kHz sample rate */
#define SPCS_SAMPLERATE_32 0x03000000 /* 32kHz sample rate */
#define SPCS_CHANNELNUMMASK 0x00f00000 /* Channel number */
#define SPCS_CHANNELNUM_UNSPEC 0x00000000 /* Unspecified channel number */
#define SPCS_CHANNELNUM_LEFT 0x00100000 /* Left channel */
#define SPCS_CHANNELNUM_RIGHT 0x00200000 /* Right channel */
#define SPCS_SOURCENUMMASK 0x000f0000 /* Source number */
#define SPCS_SOURCENUM_UNSPEC 0x00000000 /* Unspecified source number */
#define SPCS_GENERATIONSTATUS 0x00008000 /* Originality flag (see IEC-958 spec) */
#define SPCS_CATEGORYCODEMASK 0x00007f00 /* Category code (see IEC-958 spec) */
#define SPCS_MODEMASK 0x000000c0 /* Mode (see IEC-958 spec) */
#define SPCS_EMPHASISMASK 0x00000038 /* Emphasis */
#define SPCS_EMPHASIS_NONE 0x00000000 /* No emphasis */
#define SPCS_EMPHASIS_50_15 0x00000008 /* 50/15 usec 2 channel */
#define SPCS_COPYRIGHT 0x00000004 /* Copyright asserted flag -- do not modify */
#define SPCS_NOTAUDIODATA 0x00000002 /* 0 = Digital audio, 1 = not audio */
#define SPCS_PROFESSIONAL 0x00000001 /* 0 = Consumer (IEC-958), 1 = pro (AES3-1992) */
#define SPDIF_SELECT 0x45 /* Enables SPDIF or Analogue outputs 0-Analogue, 0x700-SPDIF */
/* This is the MPU port on the card */
#define MUDATA 0x47
#define MUCMD 0x48
#define MUSTAT MUCMD
/* From 0x50 - 0x5f, last samples captured */
/**
* The hardware has 3 channels for playback and 1 for capture.
* - channel 0 is the front channel
* - channel 1 is the rear channel
* - channel 2 is the center/lfe chanel
* Volume is controlled by the AC97 for the front and rear channels by
* the PCM Playback Volume, Sigmatel Surround Playback Volume and
* Surround Playback Volume. The Sigmatel 4-Speaker Stereo switch affects
* the front/rear channel mixing in the REAR OUT jack. When using the
* 4-Speaker Stereo, both front and rear channels will be mixed in the
* REAR OUT.
* The center/lfe channel has no volume control and cannot be muted during
* playback.
*/
struct emu10k1x_voice {
struct emu10k1x *emu;
int number;
int use;
struct emu10k1x_pcm *epcm;
};
struct emu10k1x_pcm {
struct emu10k1x *emu;
struct snd_pcm_substream *substream;
struct emu10k1x_voice *voice;
unsigned short running;
};
struct emu10k1x_midi {
struct emu10k1x *emu;
struct snd_rawmidi *rmidi;
struct snd_rawmidi_substream *substream_input;
struct snd_rawmidi_substream *substream_output;
unsigned int midi_mode;
spinlock_t input_lock;
spinlock_t output_lock;
spinlock_t open_lock;
int tx_enable, rx_enable;
int port;
int ipr_tx, ipr_rx;
void (*interrupt)(struct emu10k1x *emu, unsigned int status);
};
// definition of the chip-specific record
struct emu10k1x {
struct snd_card *card;
struct pci_dev *pci;
unsigned long port;
struct resource *res_port;
int irq;
unsigned int revision; /* chip revision */
unsigned int serial; /* serial number */
unsigned short model; /* subsystem id */
spinlock_t emu_lock;
spinlock_t voice_lock;
struct snd_ac97 *ac97;
struct snd_pcm *pcm;
struct emu10k1x_voice voices[3];
struct emu10k1x_voice capture_voice;
u32 spdif_bits[3]; // SPDIF out setup
struct snd_dma_buffer dma_buffer;
struct emu10k1x_midi midi;
};
/* hardware definition */
static struct snd_pcm_hardware snd_emu10k1x_playback_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 = 2,
.channels_max = 2,
.buffer_bytes_max = (32*1024),
.period_bytes_min = 64,
.period_bytes_max = (16*1024),
.periods_min = 2,
.periods_max = 8,
.fifo_size = 0,
};
static struct snd_pcm_hardware snd_emu10k1x_capture_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 = 2,
.channels_max = 2,
.buffer_bytes_max = (32*1024),
.period_bytes_min = 64,
.period_bytes_max = (16*1024),
.periods_min = 2,
.periods_max = 2,
.fifo_size = 0,
};
static unsigned int snd_emu10k1x_ptr_read(struct emu10k1x * emu,
unsigned int reg,
unsigned int chn)
{
unsigned long flags;
unsigned int regptr, val;
regptr = (reg << 16) | chn;
spin_lock_irqsave(&emu->emu_lock, flags);
outl(regptr, emu->port + PTR);
val = inl(emu->port + DATA);
spin_unlock_irqrestore(&emu->emu_lock, flags);
return val;
}
static void snd_emu10k1x_ptr_write(struct emu10k1x *emu,
unsigned int reg,
unsigned int chn,
unsigned int data)
{
unsigned int regptr;
unsigned long flags;
regptr = (reg << 16) | chn;
spin_lock_irqsave(&emu->emu_lock, flags);
outl(regptr, emu->port + PTR);
outl(data, emu->port + DATA);
spin_unlock_irqrestore(&emu->emu_lock, flags);
}
static void snd_emu10k1x_intr_enable(struct emu10k1x *emu, unsigned int intrenb)
{
unsigned long flags;
unsigned int enable;
spin_lock_irqsave(&emu->emu_lock, flags);
enable = inl(emu->port + INTE) | intrenb;
outl(enable, emu->port + INTE);
spin_unlock_irqrestore(&emu->emu_lock, flags);
}
static void snd_emu10k1x_intr_disable(struct emu10k1x *emu, unsigned int intrenb)
{
unsigned long flags;
unsigned int enable;
spin_lock_irqsave(&emu->emu_lock, flags);
enable = inl(emu->port + INTE) & ~intrenb;
outl(enable, emu->port + INTE);
spin_unlock_irqrestore(&emu->emu_lock, flags);
}
static void snd_emu10k1x_gpio_write(struct emu10k1x *emu, unsigned int value)
{
unsigned long flags;
spin_lock_irqsave(&emu->emu_lock, flags);
outl(value, emu->port + GPIO);
spin_unlock_irqrestore(&emu->emu_lock, flags);
}
static void snd_emu10k1x_pcm_free_substream(struct snd_pcm_runtime *runtime)
{
kfree(runtime->private_data);
}
static void snd_emu10k1x_pcm_interrupt(struct emu10k1x *emu, struct emu10k1x_voice *voice)
{
struct emu10k1x_pcm *epcm;
if ((epcm = voice->epcm) == NULL)
return;
if (epcm->substream == NULL)
return;
#if 0
snd_printk(KERN_INFO "IRQ: position = 0x%x, period = 0x%x, size = 0x%x\n",
epcm->substream->ops->pointer(epcm->substream),
snd_pcm_lib_period_bytes(epcm->substream),
snd_pcm_lib_buffer_bytes(epcm->substream));
#endif
snd_pcm_period_elapsed(epcm->substream);
}
/* open callback */
static int snd_emu10k1x_playback_open(struct snd_pcm_substream *substream)
{
struct emu10k1x *chip = snd_pcm_substream_chip(substream);
struct emu10k1x_pcm *epcm;
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) {
return err;
}
if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
return err;
epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
if (epcm == NULL)
return -ENOMEM;
epcm->emu = chip;
epcm->substream = substream;
runtime->private_data = epcm;
runtime->private_free = snd_emu10k1x_pcm_free_substream;
runtime->hw = snd_emu10k1x_playback_hw;
return 0;
}
/* close callback */
static int snd_emu10k1x_playback_close(struct snd_pcm_substream *substream)
{
return 0;
}
/* hw_params callback */
static int snd_emu10k1x_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct emu10k1x_pcm *epcm = runtime->private_data;
if (! epcm->voice) {
epcm->voice = &epcm->emu->voices[substream->pcm->device];
epcm->voice->use = 1;
epcm->voice->epcm = epcm;
}
return snd_pcm_lib_malloc_pages(substream,
params_buffer_bytes(hw_params));
}
/* hw_free callback */
static int snd_emu10k1x_pcm_hw_free(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct emu10k1x_pcm *epcm;
if (runtime->private_data == NULL)
return 0;
epcm = runtime->private_data;
if (epcm->voice) {
epcm->voice->use = 0;
epcm->voice->epcm = NULL;
epcm->voice = NULL;
}
return snd_pcm_lib_free_pages(substream);
}
/* prepare callback */
static int snd_emu10k1x_pcm_prepare(struct snd_pcm_substream *substream)
{
struct emu10k1x *emu = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
struct emu10k1x_pcm *epcm = runtime->private_data;
int voice = epcm->voice->number;
u32 *table_base = (u32 *)(emu->dma_buffer.area+1024*voice);
u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
int i;
for(i=0; i < runtime->periods; i++) {
*table_base++=runtime->dma_addr+(i*period_size_bytes);
*table_base++=period_size_bytes<<16;
}
snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_ADDR, voice, emu->dma_buffer.addr+1024*voice);
snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_SIZE, voice, (runtime->periods - 1) << 19);
snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_PTR, voice, 0);
snd_emu10k1x_ptr_write(emu, PLAYBACK_POINTER, voice, 0);
snd_emu10k1x_ptr_write(emu, PLAYBACK_UNKNOWN1, voice, 0);
snd_emu10k1x_ptr_write(emu, PLAYBACK_UNKNOWN2, voice, 0);
snd_emu10k1x_ptr_write(emu, PLAYBACK_DMA_ADDR, voice, runtime->dma_addr);
snd_emu10k1x_ptr_write(emu, PLAYBACK_PERIOD_SIZE, voice, frames_to_bytes(runtime, runtime->period_size)<<16);
return 0;
}
/* trigger callback */
static int snd_emu10k1x_pcm_trigger(struct snd_pcm_substream *substream,
int cmd)
{
struct emu10k1x *emu = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
struct emu10k1x_pcm *epcm = runtime->private_data;
int channel = epcm->voice->number;
int result = 0;
// snd_printk(KERN_INFO "trigger - emu10k1x = 0x%x, cmd = %i, pointer = %d\n", (int)emu, cmd, (int)substream->ops->pointer(substream));
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
if(runtime->periods == 2)
snd_emu10k1x_intr_enable(emu, (INTE_CH_0_LOOP | INTE_CH_0_HALF_LOOP) << channel);
else
snd_emu10k1x_intr_enable(emu, INTE_CH_0_LOOP << channel);
epcm->running = 1;
snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0)|(TRIGGER_CHANNEL_0<<channel));
break;
case SNDRV_PCM_TRIGGER_STOP:
epcm->running = 0;
snd_emu10k1x_intr_disable(emu, (INTE_CH_0_LOOP | INTE_CH_0_HALF_LOOP) << channel);
snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0) & ~(TRIGGER_CHANNEL_0<<channel));
break;
default:
result = -EINVAL;
break;
}
return result;
}
/* pointer callback */
static snd_pcm_uframes_t
snd_emu10k1x_pcm_pointer(struct snd_pcm_substream *substream)
{
struct emu10k1x *emu = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
struct emu10k1x_pcm *epcm = runtime->private_data;
int channel = epcm->voice->number;
snd_pcm_uframes_t ptr = 0, ptr1 = 0, ptr2= 0,ptr3 = 0,ptr4 = 0;
if (!epcm->running)
return 0;
ptr3 = snd_emu10k1x_ptr_read(emu, PLAYBACK_LIST_PTR, channel);
ptr1 = snd_emu10k1x_ptr_read(emu, PLAYBACK_POINTER, channel);
ptr4 = snd_emu10k1x_ptr_read(emu, PLAYBACK_LIST_PTR, channel);
if(ptr4 == 0 && ptr1 == frames_to_bytes(runtime, runtime->buffer_size))
return 0;
if (ptr3 != ptr4)
ptr1 = snd_emu10k1x_ptr_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;
}
/* operators */
static struct snd_pcm_ops snd_emu10k1x_playback_ops = {
.open = snd_emu10k1x_playback_open,
.close = snd_emu10k1x_playback_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_emu10k1x_pcm_hw_params,
.hw_free = snd_emu10k1x_pcm_hw_free,
.prepare = snd_emu10k1x_pcm_prepare,
.trigger = snd_emu10k1x_pcm_trigger,
.pointer = snd_emu10k1x_pcm_pointer,
};
/* open_capture callback */
static int snd_emu10k1x_pcm_open_capture(struct snd_pcm_substream *substream)
{
struct emu10k1x *chip = snd_pcm_substream_chip(substream);
struct emu10k1x_pcm *epcm;
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
return err;
if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
return err;
epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
if (epcm == NULL)
return -ENOMEM;
epcm->emu = chip;
epcm->substream = substream;
runtime->private_data = epcm;
runtime->private_free = snd_emu10k1x_pcm_free_substream;
runtime->hw = snd_emu10k1x_capture_hw;
return 0;
}
/* close callback */
static int snd_emu10k1x_pcm_close_capture(struct snd_pcm_substream *substream)
{
return 0;
}
/* hw_params callback */
static int snd_emu10k1x_pcm_hw_params_capture(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct emu10k1x_pcm *epcm = runtime->private_data;
if (! epcm->voice) {
if (epcm->emu->capture_voice.use)
return -EBUSY;
epcm->voice = &epcm->emu->capture_voice;
epcm->voice->epcm = epcm;
epcm->voice->use = 1;
}
return snd_pcm_lib_malloc_pages(substream,
params_buffer_bytes(hw_params));
}
/* hw_free callback */
static int snd_emu10k1x_pcm_hw_free_capture(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct emu10k1x_pcm *epcm;
if (runtime->private_data == NULL)
return 0;
epcm = runtime->private_data;
if (epcm->voice) {
epcm->voice->use = 0;
epcm->voice->epcm = NULL;
epcm->voice = NULL;
}
return snd_pcm_lib_free_pages(substream);
}
/* prepare capture callback */
static int snd_emu10k1x_pcm_prepare_capture(struct snd_pcm_substream *substream)
{
struct emu10k1x *emu = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
snd_emu10k1x_ptr_write(emu, CAPTURE_DMA_ADDR, 0, runtime->dma_addr);
snd_emu10k1x_ptr_write(emu, CAPTURE_BUFFER_SIZE, 0, frames_to_bytes(runtime, runtime->buffer_size)<<16); // buffer size in bytes
snd_emu10k1x_ptr_write(emu, CAPTURE_POINTER, 0, 0);
snd_emu10k1x_ptr_write(emu, CAPTURE_UNKNOWN, 0, 0);
return 0;
}
/* trigger_capture callback */
static int snd_emu10k1x_pcm_trigger_capture(struct snd_pcm_substream *substream,
int cmd)
{
struct emu10k1x *emu = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
struct emu10k1x_pcm *epcm = runtime->private_data;
int result = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
snd_emu10k1x_intr_enable(emu, INTE_CAP_0_LOOP |
INTE_CAP_0_HALF_LOOP);
snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0)|TRIGGER_CAPTURE);
epcm->running = 1;
break;
case SNDRV_PCM_TRIGGER_STOP:
epcm->running = 0;
snd_emu10k1x_intr_disable(emu, INTE_CAP_0_LOOP |
INTE_CAP_0_HALF_LOOP);
snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0) & ~(TRIGGER_CAPTURE));
break;
default:
result = -EINVAL;
break;
}
return result;
}
/* pointer_capture callback */
static snd_pcm_uframes_t
snd_emu10k1x_pcm_pointer_capture(struct snd_pcm_substream *substream)
{
struct emu10k1x *emu = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
struct emu10k1x_pcm *epcm = runtime->private_data;
snd_pcm_uframes_t ptr;
if (!epcm->running)
return 0;
ptr = bytes_to_frames(runtime, snd_emu10k1x_ptr_read(emu, CAPTURE_POINTER, 0));
if (ptr >= runtime->buffer_size)
ptr -= runtime->buffer_size;
return ptr;
}
static struct snd_pcm_ops snd_emu10k1x_capture_ops = {
.open = snd_emu10k1x_pcm_open_capture,
.close = snd_emu10k1x_pcm_close_capture,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_emu10k1x_pcm_hw_params_capture,
.hw_free = snd_emu10k1x_pcm_hw_free_capture,
.prepare = snd_emu10k1x_pcm_prepare_capture,
.trigger = snd_emu10k1x_pcm_trigger_capture,
.pointer = snd_emu10k1x_pcm_pointer_capture,
};
static unsigned short snd_emu10k1x_ac97_read(struct snd_ac97 *ac97,
unsigned short reg)
{
struct emu10k1x *emu = ac97->private_data;
unsigned long flags;
unsigned short val;
spin_lock_irqsave(&emu->emu_lock, flags);
outb(reg, emu->port + AC97ADDRESS);
val = inw(emu->port + AC97DATA);
spin_unlock_irqrestore(&emu->emu_lock, flags);
return val;
}
static void snd_emu10k1x_ac97_write(struct snd_ac97 *ac97,
unsigned short reg, unsigned short val)
{
struct emu10k1x *emu = ac97->private_data;
unsigned long flags;
spin_lock_irqsave(&emu->emu_lock, flags);
outb(reg, emu->port + AC97ADDRESS);
outw(val, emu->port + AC97DATA);
spin_unlock_irqrestore(&emu->emu_lock, flags);
}
static int snd_emu10k1x_ac97(struct emu10k1x *chip)
{
struct snd_ac97_bus *pbus;
struct snd_ac97_template ac97;
int err;
static struct snd_ac97_bus_ops ops = {
.write = snd_emu10k1x_ac97_write,
.read = snd_emu10k1x_ac97_read,
};
if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0)
return err;
pbus->no_vra = 1; /* we don't need VRA */
memset(&ac97, 0, sizeof(ac97));
ac97.private_data = chip;
ac97.scaps = AC97_SCAP_NO_SPDIF;
return snd_ac97_mixer(pbus, &ac97, &chip->ac97);
}
static int snd_emu10k1x_free(struct emu10k1x *chip)
{
snd_emu10k1x_ptr_write(chip, TRIGGER_CHANNEL, 0, 0);
// disable interrupts
outl(0, chip->port + INTE);
// disable audio
outl(HCFG_LOCKSOUNDCACHE, chip->port + HCFG);
// release the i/o port
release_and_free_resource(chip->res_port);
// release the irq
if (chip->irq >= 0)
free_irq(chip->irq, (void *)chip);
// release the DMA
if (chip->dma_buffer.area) {
snd_dma_free_pages(&chip->dma_buffer);
}
pci_disable_device(chip->pci);
// release the data
kfree(chip);
return 0;
}
static int snd_emu10k1x_dev_free(struct snd_device *device)
{
struct emu10k1x *chip = device->device_data;
return snd_emu10k1x_free(chip);
}
static irqreturn_t snd_emu10k1x_interrupt(int irq, void *dev_id)
{
unsigned int status;
struct emu10k1x *chip = dev_id;
struct emu10k1x_voice *pvoice = chip->voices;
int i;
int mask;
status = inl(chip->port + IPR);
if (! status)
return IRQ_NONE;
// capture interrupt
if (status & (IPR_CAP_0_LOOP | IPR_CAP_0_HALF_LOOP)) {
struct emu10k1x_voice *pvoice = &chip->capture_voice;
if (pvoice->use)
snd_emu10k1x_pcm_interrupt(chip, pvoice);
else
snd_emu10k1x_intr_disable(chip,
INTE_CAP_0_LOOP |
INTE_CAP_0_HALF_LOOP);
}
mask = IPR_CH_0_LOOP|IPR_CH_0_HALF_LOOP;
for (i = 0; i < 3; i++) {
if (status & mask) {
if (pvoice->use)
snd_emu10k1x_pcm_interrupt(chip, pvoice);
else
snd_emu10k1x_intr_disable(chip, mask);
}
pvoice++;
mask <<= 1;
}
if (status & (IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY)) {
if (chip->midi.interrupt)
chip->midi.interrupt(chip, status);
else
snd_emu10k1x_intr_disable(chip, INTE_MIDITXENABLE|INTE_MIDIRXENABLE);
}
// acknowledge the interrupt if necessary
outl(status, chip->port + IPR);
// snd_printk(KERN_INFO "interrupt %08x\n", status);
return IRQ_HANDLED;
}
static int __devinit snd_emu10k1x_pcm(struct emu10k1x *emu, int device, struct snd_pcm **rpcm)
{
struct snd_pcm *pcm;
int err;
int capture = 0;
if (rpcm)
*rpcm = NULL;
if (device == 0)
capture = 1;
if ((err = snd_pcm_new(emu->card, "emu10k1x", device, 1, capture, &pcm)) < 0)
return err;
pcm->private_data = emu;
switch(device) {
case 0:
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1x_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_emu10k1x_capture_ops);
break;
case 1:
case 2:
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1x_playback_ops);
break;
}
pcm->info_flags = 0;
pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
switch(device) {
case 0:
strcpy(pcm->name, "EMU10K1X Front");
break;
case 1:
strcpy(pcm->name, "EMU10K1X Rear");
break;
case 2:
strcpy(pcm->name, "EMU10K1X Center/LFE");
break;
}
emu->pcm = pcm;
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
snd_dma_pci_data(emu->pci),
32*1024, 32*1024);
if (rpcm)
*rpcm = pcm;
return 0;
}
static int __devinit snd_emu10k1x_create(struct snd_card *card,
struct pci_dev *pci,
struct emu10k1x **rchip)
{
struct emu10k1x *chip;
int err;
int ch;
static struct snd_device_ops ops = {
.dev_free = snd_emu10k1x_dev_free,
};
*rchip = NULL;
if ((err = pci_enable_device(pci)) < 0)
return err;
if (pci_set_dma_mask(pci, DMA_28BIT_MASK) < 0 ||
pci_set_consistent_dma_mask(pci, DMA_28BIT_MASK) < 0) {
snd_printk(KERN_ERR "error to set 28bit mask DMA\n");
pci_disable_device(pci);
return -ENXIO;
}
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
if (chip == NULL) {
pci_disable_device(pci);
return -ENOMEM;
}
chip->card = card;
chip->pci = pci;
chip->irq = -1;
spin_lock_init(&chip->emu_lock);
spin_lock_init(&chip->voice_lock);
chip->port = pci_resource_start(pci, 0);
if ((chip->res_port = request_region(chip->port, 8,
"EMU10K1X")) == NULL) {
snd_printk(KERN_ERR "emu10k1x: cannot allocate the port 0x%lx\n", chip->port);
snd_emu10k1x_free(chip);
return -EBUSY;
}
if (request_irq(pci->irq, snd_emu10k1x_interrupt,
IRQF_DISABLED|IRQF_SHARED, "EMU10K1X",
(void *)chip)) {
snd_printk(KERN_ERR "emu10k1x: cannot grab irq %d\n", pci->irq);
snd_emu10k1x_free(chip);
return -EBUSY;
}
chip->irq = pci->irq;
if(snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
4 * 1024, &chip->dma_buffer) < 0) {
snd_emu10k1x_free(chip);
return -ENOMEM;
}
pci_set_master(pci);
/* read revision & serial */
pci_read_config_byte(pci, PCI_REVISION_ID, (char *)&chip->revision);
pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial);
pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model);
snd_printk(KERN_INFO "Model %04x Rev %08x Serial %08x\n", chip->model,
chip->revision, chip->serial);
outl(0, chip->port + INTE);
for(ch = 0; ch < 3; ch++) {
chip->voices[ch].emu = chip;
chip->voices[ch].number = ch;
}
/*
* Init to 0x02109204 :
* Clock accuracy = 0 (1000ppm)
* Sample Rate = 2 (48kHz)
* Audio Channel = 1 (Left of 2)
* Source Number = 0 (Unspecified)
* Generation Status = 1 (Original for Cat Code 12)
* Cat Code = 12 (Digital Signal Mixer)
* Mode = 0 (Mode 0)
* Emphasis = 0 (None)
* CP = 1 (Copyright unasserted)
* AN = 0 (Audio data)
* P = 0 (Consumer)
*/
snd_emu10k1x_ptr_write(chip, SPCS0, 0,
chip->spdif_bits[0] =
SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
SPCS_GENERATIONSTATUS | 0x00001200 |
0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
snd_emu10k1x_ptr_write(chip, SPCS1, 0,
chip->spdif_bits[1] =
SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
SPCS_GENERATIONSTATUS | 0x00001200 |
0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
snd_emu10k1x_ptr_write(chip, SPCS2, 0,
chip->spdif_bits[2] =
SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
SPCS_GENERATIONSTATUS | 0x00001200 |
0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
snd_emu10k1x_ptr_write(chip, SPDIF_SELECT, 0, 0x700); // disable SPDIF
snd_emu10k1x_ptr_write(chip, ROUTING, 0, 0x1003F); // routing
snd_emu10k1x_gpio_write(chip, 0x1080); // analog mode
outl(HCFG_LOCKSOUNDCACHE|HCFG_AUDIOENABLE, chip->port+HCFG);
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
chip, &ops)) < 0) {
snd_emu10k1x_free(chip);
return err;
}
*rchip = chip;
return 0;
}
static void snd_emu10k1x_proc_reg_read(struct snd_info_entry *entry,
struct snd_info_buffer *buffer)
{
struct emu10k1x *emu = entry->private_data;
unsigned long value,value1,value2;
unsigned long flags;
int i;
snd_iprintf(buffer, "Registers:\n\n");
for(i = 0; i < 0x20; i+=4) {
spin_lock_irqsave(&emu->emu_lock, flags);
value = inl(emu->port + i);
spin_unlock_irqrestore(&emu->emu_lock, flags);
snd_iprintf(buffer, "Register %02X: %08lX\n", i, value);
}
snd_iprintf(buffer, "\nRegisters\n\n");
for(i = 0; i <= 0x48; i++) {
value = snd_emu10k1x_ptr_read(emu, i, 0);
if(i < 0x10 || (i >= 0x20 && i < 0x40)) {
value1 = snd_emu10k1x_ptr_read(emu, i, 1);
value2 = snd_emu10k1x_ptr_read(emu, i, 2);
snd_iprintf(buffer, "%02X: %08lX %08lX %08lX\n", i, value, value1, value2);
} else {
snd_iprintf(buffer, "%02X: %08lX\n", i, value);
}
}
}
static void snd_emu10k1x_proc_reg_write(struct snd_info_entry *entry,
struct snd_info_buffer *buffer)
{
struct emu10k1x *emu = entry->private_data;
char line[64];
unsigned int reg, channel_id , val;
while (!snd_info_get_line(buffer, line, sizeof(line))) {
if (sscanf(line, "%x %x %x", &reg, &channel_id, &val) != 3)
continue;
if ((reg < 0x49) && (reg >=0) && (val <= 0xffffffff)
&& (channel_id >=0) && (channel_id <= 2) )
snd_emu10k1x_ptr_write(emu, reg, channel_id, val);
}
}
static int __devinit snd_emu10k1x_proc_init(struct emu10k1x * emu)
{
struct snd_info_entry *entry;
if(! snd_card_proc_new(emu->card, "emu10k1x_regs", &entry)) {
snd_info_set_text_ops(entry, emu, snd_emu10k1x_proc_reg_read);
entry->c.text.write = snd_emu10k1x_proc_reg_write;
entry->mode |= S_IWUSR;
entry->private_data = emu;
}
return 0;
}
static int snd_emu10k1x_shared_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
uinfo->count = 1;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = 1;
return 0;
}
static int snd_emu10k1x_shared_spdif_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
ucontrol->value.integer.value[0] = (snd_emu10k1x_ptr_read(emu, SPDIF_SELECT, 0) == 0x700) ? 0 : 1;
return 0;
}
static int snd_emu10k1x_shared_spdif_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
unsigned int val;
int change = 0;
val = ucontrol->value.integer.value[0] ;
if (val) {
// enable spdif output
snd_emu10k1x_ptr_write(emu, SPDIF_SELECT, 0, 0x000);
snd_emu10k1x_ptr_write(emu, ROUTING, 0, 0x700);
snd_emu10k1x_gpio_write(emu, 0x1000);
} else {
// disable spdif output
snd_emu10k1x_ptr_write(emu, SPDIF_SELECT, 0, 0x700);
snd_emu10k1x_ptr_write(emu, ROUTING, 0, 0x1003F);
snd_emu10k1x_gpio_write(emu, 0x1080);
}
return change;
}
static struct snd_kcontrol_new snd_emu10k1x_shared_spdif __devinitdata =
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Analog/Digital Output Jack",
.info = snd_emu10k1x_shared_spdif_info,
.get = snd_emu10k1x_shared_spdif_get,
.put = snd_emu10k1x_shared_spdif_put
};
static int snd_emu10k1x_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
uinfo->count = 1;
return 0;
}
static int snd_emu10k1x_spdif_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
ucontrol->value.iec958.status[0] = (emu->spdif_bits[idx] >> 0) & 0xff;
ucontrol->value.iec958.status[1] = (emu->spdif_bits[idx] >> 8) & 0xff;
ucontrol->value.iec958.status[2] = (emu->spdif_bits[idx] >> 16) & 0xff;
ucontrol->value.iec958.status[3] = (emu->spdif_bits[idx] >> 24) & 0xff;
return 0;
}
static int snd_emu10k1x_spdif_get_mask(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.iec958.status[0] = 0xff;
ucontrol->value.iec958.status[1] = 0xff;
ucontrol->value.iec958.status[2] = 0xff;
ucontrol->value.iec958.status[3] = 0xff;
return 0;
}
static int snd_emu10k1x_spdif_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
int change;
unsigned int val;
val = (ucontrol->value.iec958.status[0] << 0) |
(ucontrol->value.iec958.status[1] << 8) |
(ucontrol->value.iec958.status[2] << 16) |
(ucontrol->value.iec958.status[3] << 24);
change = val != emu->spdif_bits[idx];
if (change) {
snd_emu10k1x_ptr_write(emu, SPCS0 + idx, 0, val);
emu->spdif_bits[idx] = val;
}
return change;
}
static struct snd_kcontrol_new snd_emu10k1x_spdif_mask_control =
{
.access = SNDRV_CTL_ELEM_ACCESS_READ,
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
.count = 3,
.info = snd_emu10k1x_spdif_info,
.get = snd_emu10k1x_spdif_get_mask
};
static struct snd_kcontrol_new snd_emu10k1x_spdif_control =
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
.count = 3,
.info = snd_emu10k1x_spdif_info,
.get = snd_emu10k1x_spdif_get,
.put = snd_emu10k1x_spdif_put
};
static int __devinit snd_emu10k1x_mixer(struct emu10k1x *emu)
{
int err;
struct snd_kcontrol *kctl;
struct snd_card *card = emu->card;
if ((kctl = snd_ctl_new1(&snd_emu10k1x_spdif_mask_control, emu)) == NULL)
return -ENOMEM;
if ((err = snd_ctl_add(card, kctl)))
return err;
if ((kctl = snd_ctl_new1(&snd_emu10k1x_shared_spdif, emu)) == NULL)
return -ENOMEM;
if ((err = snd_ctl_add(card, kctl)))
return err;
if ((kctl = snd_ctl_new1(&snd_emu10k1x_spdif_control, emu)) == NULL)
return -ENOMEM;
if ((err = snd_ctl_add(card, kctl)))
return err;
return 0;
}
#define EMU10K1X_MIDI_MODE_INPUT (1<<0)
#define EMU10K1X_MIDI_MODE_OUTPUT (1<<1)
static inline unsigned char mpu401_read(struct emu10k1x *emu, struct emu10k1x_midi *mpu, int idx)
{
return (unsigned char)snd_emu10k1x_ptr_read(emu, mpu->port + idx, 0);
}
static inline void mpu401_write(struct emu10k1x *emu, struct emu10k1x_midi *mpu, int data, int idx)
{
snd_emu10k1x_ptr_write(emu, mpu->port + idx, 0, data);
}
#define mpu401_write_data(emu, mpu, data) mpu401_write(emu, mpu, data, 0)
#define mpu401_write_cmd(emu, mpu, data) mpu401_write(emu, mpu, data, 1)
#define mpu401_read_data(emu, mpu) mpu401_read(emu, mpu, 0)
#define mpu401_read_stat(emu, mpu) mpu401_read(emu, mpu, 1)
#define mpu401_input_avail(emu,mpu) (!(mpu401_read_stat(emu,mpu) & 0x80))
#define mpu401_output_ready(emu,mpu) (!(mpu401_read_stat(emu,mpu) & 0x40))
#define MPU401_RESET 0xff
#define MPU401_ENTER_UART 0x3f
#define MPU401_ACK 0xfe
static void mpu401_clear_rx(struct emu10k1x *emu, struct emu10k1x_midi *mpu)
{
int timeout = 100000;
for (; timeout > 0 && mpu401_input_avail(emu, mpu); timeout--)
mpu401_read_data(emu, mpu);
#ifdef CONFIG_SND_DEBUG
if (timeout <= 0)
snd_printk(KERN_ERR "cmd: clear rx timeout (status = 0x%x)\n", mpu401_read_stat(emu, mpu));
#endif
}
/*
*/
static void do_emu10k1x_midi_interrupt(struct emu10k1x *emu,
struct emu10k1x_midi *midi, unsigned int status)
{
unsigned char byte;
if (midi->rmidi == NULL) {
snd_emu10k1x_intr_disable(emu, midi->tx_enable | midi->rx_enable);
return;
}
spin_lock(&midi->input_lock);
if ((status & midi->ipr_rx) && mpu401_input_avail(emu, midi)) {
if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
mpu401_clear_rx(emu, midi);
} else {
byte = mpu401_read_data(emu, midi);
if (midi->substream_input)
snd_rawmidi_receive(midi->substream_input, &byte, 1);
}
}
spin_unlock(&midi->input_lock);
spin_lock(&midi->output_lock);
if ((status & midi->ipr_tx) && mpu401_output_ready(emu, midi)) {
if (midi->substream_output &&
snd_rawmidi_transmit(midi->substream_output, &byte, 1) == 1) {
mpu401_write_data(emu, midi, byte);
} else {
snd_emu10k1x_intr_disable(emu, midi->tx_enable);
}
}
spin_unlock(&midi->output_lock);
}
static void snd_emu10k1x_midi_interrupt(struct emu10k1x *emu, unsigned int status)
{
do_emu10k1x_midi_interrupt(emu, &emu->midi, status);
}
static int snd_emu10k1x_midi_cmd(struct emu10k1x * emu,
struct emu10k1x_midi *midi, unsigned char cmd, int ack)
{
unsigned long flags;
int timeout, ok;
spin_lock_irqsave(&midi->input_lock, flags);
mpu401_write_data(emu, midi, 0x00);
/* mpu401_clear_rx(emu, midi); */
mpu401_write_cmd(emu, midi, cmd);
if (ack) {
ok = 0;
timeout = 10000;
while (!ok && timeout-- > 0) {
if (mpu401_input_avail(emu, midi)) {
if (mpu401_read_data(emu, midi) == MPU401_ACK)
ok = 1;
}
}
if (!ok && mpu401_read_data(emu, midi) == MPU401_ACK)
ok = 1;
} else {
ok = 1;
}
spin_unlock_irqrestore(&midi->input_lock, flags);
if (!ok) {
snd_printk(KERN_ERR "midi_cmd: 0x%x failed at 0x%lx (status = 0x%x, data = 0x%x)!!!\n",
cmd, emu->port,
mpu401_read_stat(emu, midi),
mpu401_read_data(emu, midi));
return 1;
}
return 0;
}
static int snd_emu10k1x_midi_input_open(struct snd_rawmidi_substream *substream)
{
struct emu10k1x *emu;
struct emu10k1x_midi *midi = substream->rmidi->private_data;
unsigned long flags;
emu = midi->emu;
snd_assert(emu, return -ENXIO);
spin_lock_irqsave(&midi->open_lock, flags);
midi->midi_mode |= EMU10K1X_MIDI_MODE_INPUT;
midi->substream_input = substream;
if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT)) {
spin_unlock_irqrestore(&midi->open_lock, flags);
if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 1))
goto error_out;
if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_ENTER_UART, 1))
goto error_out;
} else {
spin_unlock_irqrestore(&midi->open_lock, flags);
}
return 0;
error_out:
return -EIO;
}
static int snd_emu10k1x_midi_output_open(struct snd_rawmidi_substream *substream)
{
struct emu10k1x *emu;
struct emu10k1x_midi *midi = substream->rmidi->private_data;
unsigned long flags;
emu = midi->emu;
snd_assert(emu, return -ENXIO);
spin_lock_irqsave(&midi->open_lock, flags);
midi->midi_mode |= EMU10K1X_MIDI_MODE_OUTPUT;
midi->substream_output = substream;
if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
spin_unlock_irqrestore(&midi->open_lock, flags);
if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 1))
goto error_out;
if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_ENTER_UART, 1))
goto error_out;
} else {
spin_unlock_irqrestore(&midi->open_lock, flags);
}
return 0;
error_out:
return -EIO;
}
static int snd_emu10k1x_midi_input_close(struct snd_rawmidi_substream *substream)
{
struct emu10k1x *emu;
struct emu10k1x_midi *midi = substream->rmidi->private_data;
unsigned long flags;
int err = 0;
emu = midi->emu;
snd_assert(emu, return -ENXIO);
spin_lock_irqsave(&midi->open_lock, flags);
snd_emu10k1x_intr_disable(emu, midi->rx_enable);
midi->midi_mode &= ~EMU10K1X_MIDI_MODE_INPUT;
midi->substream_input = NULL;
if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT)) {
spin_unlock_irqrestore(&midi->open_lock, flags);
err = snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0);
} else {
spin_unlock_irqrestore(&midi->open_lock, flags);
}
return err;
}
static int snd_emu10k1x_midi_output_close(struct snd_rawmidi_substream *substream)
{
struct emu10k1x *emu;
struct emu10k1x_midi *midi = substream->rmidi->private_data;
unsigned long flags;
int err = 0;
emu = midi->emu;
snd_assert(emu, return -ENXIO);
spin_lock_irqsave(&midi->open_lock, flags);
snd_emu10k1x_intr_disable(emu, midi->tx_enable);
midi->midi_mode &= ~EMU10K1X_MIDI_MODE_OUTPUT;
midi->substream_output = NULL;
if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
spin_unlock_irqrestore(&midi->open_lock, flags);
err = snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0);
} else {
spin_unlock_irqrestore(&midi->open_lock, flags);
}
return err;
}
static void snd_emu10k1x_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
{
struct emu10k1x *emu;
struct emu10k1x_midi *midi = substream->rmidi->private_data;
emu = midi->emu;
snd_assert(emu, return);
if (up)
snd_emu10k1x_intr_enable(emu, midi->rx_enable);
else
snd_emu10k1x_intr_disable(emu, midi->rx_enable);
}
static void snd_emu10k1x_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
{
struct emu10k1x *emu;
struct emu10k1x_midi *midi = substream->rmidi->private_data;
unsigned long flags;
emu = midi->emu;
snd_assert(emu, return);
if (up) {
int max = 4;
unsigned char byte;
/* try to send some amount of bytes here before interrupts */
spin_lock_irqsave(&midi->output_lock, flags);
while (max > 0) {
if (mpu401_output_ready(emu, midi)) {
if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT) ||
snd_rawmidi_transmit(substream, &byte, 1) != 1) {
/* no more data */
spin_unlock_irqrestore(&midi->output_lock, flags);
return;
}
mpu401_write_data(emu, midi, byte);
max--;
} else {
break;
}
}
spin_unlock_irqrestore(&midi->output_lock, flags);
snd_emu10k1x_intr_enable(emu, midi->tx_enable);
} else {
snd_emu10k1x_intr_disable(emu, midi->tx_enable);
}
}
/*
*/
static struct snd_rawmidi_ops snd_emu10k1x_midi_output =
{
.open = snd_emu10k1x_midi_output_open,
.close = snd_emu10k1x_midi_output_close,
.trigger = snd_emu10k1x_midi_output_trigger,
};
static struct snd_rawmidi_ops snd_emu10k1x_midi_input =
{
.open = snd_emu10k1x_midi_input_open,
.close = snd_emu10k1x_midi_input_close,
.trigger = snd_emu10k1x_midi_input_trigger,
};
static void snd_emu10k1x_midi_free(struct snd_rawmidi *rmidi)
{
struct emu10k1x_midi *midi = rmidi->private_data;
midi->interrupt = NULL;
midi->rmidi = NULL;
}
static int __devinit emu10k1x_midi_init(struct emu10k1x *emu,
struct emu10k1x_midi *midi, int device, char *name)
{
struct snd_rawmidi *rmidi;
int err;
if ((err = snd_rawmidi_new(emu->card, name, device, 1, 1, &rmidi)) < 0)
return err;
midi->emu = emu;
spin_lock_init(&midi->open_lock);
spin_lock_init(&midi->input_lock);
spin_lock_init(&midi->output_lock);
strcpy(rmidi->name, name);
snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_emu10k1x_midi_output);
snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_emu10k1x_midi_input);
rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT |
SNDRV_RAWMIDI_INFO_INPUT |
SNDRV_RAWMIDI_INFO_DUPLEX;
rmidi->private_data = midi;
rmidi->private_free = snd_emu10k1x_midi_free;
midi->rmidi = rmidi;
return 0;
}
static int __devinit snd_emu10k1x_midi(struct emu10k1x *emu)
{
struct emu10k1x_midi *midi = &emu->midi;
int err;
if ((err = emu10k1x_midi_init(emu, midi, 0, "EMU10K1X MPU-401 (UART)")) < 0)
return err;
midi->tx_enable = INTE_MIDITXENABLE;
midi->rx_enable = INTE_MIDIRXENABLE;
midi->port = MUDATA;
midi->ipr_tx = IPR_MIDITRANSBUFEMPTY;
midi->ipr_rx = IPR_MIDIRECVBUFEMPTY;
midi->interrupt = snd_emu10k1x_midi_interrupt;
return 0;
}
static int __devinit snd_emu10k1x_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
static int dev;
struct snd_card *card;
struct emu10k1x *chip;
int err;
if (dev >= SNDRV_CARDS)
return -ENODEV;
if (!enable[dev]) {
dev++;
return -ENOENT;
}
card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
if (card == NULL)
return -ENOMEM;
if ((err = snd_emu10k1x_create(card, pci, &chip)) < 0) {
snd_card_free(card);
return err;
}
if ((err = snd_emu10k1x_pcm(chip, 0, NULL)) < 0) {
snd_card_free(card);
return err;
}
if ((err = snd_emu10k1x_pcm(chip, 1, NULL)) < 0) {
snd_card_free(card);
return err;
}
if ((err = snd_emu10k1x_pcm(chip, 2, NULL)) < 0) {
snd_card_free(card);
return err;
}
if ((err = snd_emu10k1x_ac97(chip)) < 0) {
snd_card_free(card);
return err;
}
if ((err = snd_emu10k1x_mixer(chip)) < 0) {
snd_card_free(card);
return err;
}
if ((err = snd_emu10k1x_midi(chip)) < 0) {
snd_card_free(card);
return err;
}
snd_emu10k1x_proc_init(chip);
strcpy(card->driver, "EMU10K1X");
strcpy(card->shortname, "Dell Sound Blaster Live!");
sprintf(card->longname, "%s at 0x%lx irq %i",
card->shortname, chip->port, chip->irq);
if ((err = snd_card_register(card)) < 0) {
snd_card_free(card);
return err;
}
pci_set_drvdata(pci, card);
dev++;
return 0;
}
static void __devexit snd_emu10k1x_remove(struct pci_dev *pci)
{
snd_card_free(pci_get_drvdata(pci));
pci_set_drvdata(pci, NULL);
}
// PCI IDs
static struct pci_device_id snd_emu10k1x_ids[] = {
{ 0x1102, 0x0006, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* Dell OEM version (EMU10K1) */
{ 0, }
};
MODULE_DEVICE_TABLE(pci, snd_emu10k1x_ids);
// pci_driver definition
static struct pci_driver driver = {
.name = "EMU10K1X",
.id_table = snd_emu10k1x_ids,
.probe = snd_emu10k1x_probe,
.remove = __devexit_p(snd_emu10k1x_remove),
};
// initialization of the module
static int __init alsa_card_emu10k1x_init(void)
{
return pci_register_driver(&driver);
}
// clean up the module
static void __exit alsa_card_emu10k1x_exit(void)
{
pci_unregister_driver(&driver);
}
module_init(alsa_card_emu10k1x_init)
module_exit(alsa_card_emu10k1x_exit)
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