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linux/sound/ppc/snd_ps3.c
Tobias Klauser 3f76d9841e ALSA: Storage class should be before const qualifier 
The C99 specification states in section 6.11.5:

The placement of a storage-class specifier other than at the
beginning of the declaration specifiers in a declaration is an
obsolescent feature.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
2008-04-21 22:25:51 +00:00

1125 lines
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/*
* Audio support for PS3
* Copyright (C) 2007 Sony Computer Entertainment Inc.
* All rights reserved.
* Copyright 2006, 2007 Sony Corporation
*
* 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; version 2 of the Licence.
*
* 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/init.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <linux/interrupt.h>
#include <sound/core.h>
#include <sound/initval.h>
#include <sound/pcm.h>
#include <sound/asound.h>
#include <sound/memalloc.h>
#include <sound/pcm_params.h>
#include <sound/control.h>
#include <linux/dmapool.h>
#include <linux/dma-mapping.h>
#include <asm/firmware.h>
#include <asm/dma.h>
#include <asm/lv1call.h>
#include <asm/ps3.h>
#include <asm/ps3av.h>
#include "snd_ps3_reg.h"
#include "snd_ps3.h"
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("PS3 sound driver");
MODULE_AUTHOR("Sony Computer Entertainment Inc.");
/* module entries */
static int __init snd_ps3_init(void);
static void __exit snd_ps3_exit(void);
/* ALSA snd driver ops */
static int snd_ps3_pcm_open(struct snd_pcm_substream *substream);
static int snd_ps3_pcm_close(struct snd_pcm_substream *substream);
static int snd_ps3_pcm_prepare(struct snd_pcm_substream *substream);
static int snd_ps3_pcm_trigger(struct snd_pcm_substream *substream,
int cmd);
static snd_pcm_uframes_t snd_ps3_pcm_pointer(struct snd_pcm_substream
*substream);
static int snd_ps3_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params);
static int snd_ps3_pcm_hw_free(struct snd_pcm_substream *substream);
/* ps3_system_bus_driver entries */
static int __init snd_ps3_driver_probe(struct ps3_system_bus_device *dev);
static int snd_ps3_driver_remove(struct ps3_system_bus_device *dev);
/* address setup */
static int snd_ps3_map_mmio(void);
static void snd_ps3_unmap_mmio(void);
static int snd_ps3_allocate_irq(void);
static void snd_ps3_free_irq(void);
static void snd_ps3_audio_set_base_addr(uint64_t ioaddr_start);
/* interrupt handler */
static irqreturn_t snd_ps3_interrupt(int irq, void *dev_id);
/* set sampling rate/format */
static int snd_ps3_set_avsetting(struct snd_pcm_substream *substream);
/* take effect parameter change */
static int snd_ps3_change_avsetting(struct snd_ps3_card_info *card);
/* initialize avsetting and take it effect */
static int snd_ps3_init_avsetting(struct snd_ps3_card_info *card);
/* setup dma */
static int snd_ps3_program_dma(struct snd_ps3_card_info *card,
enum snd_ps3_dma_filltype filltype);
static void snd_ps3_wait_for_dma_stop(struct snd_ps3_card_info *card);
static dma_addr_t v_to_bus(struct snd_ps3_card_info *, void *vaddr, int ch);
module_init(snd_ps3_init);
module_exit(snd_ps3_exit);
/*
* global
*/
static struct snd_ps3_card_info the_card;
static int snd_ps3_start_delay = CONFIG_SND_PS3_DEFAULT_START_DELAY;
module_param_named(start_delay, snd_ps3_start_delay, uint, 0644);
MODULE_PARM_DESC(start_delay, "time to insert silent data in milisec");
static int index = SNDRV_DEFAULT_IDX1;
static char *id = SNDRV_DEFAULT_STR1;
module_param(index, int, 0444);
MODULE_PARM_DESC(index, "Index value for PS3 soundchip.");
module_param(id, charp, 0444);
MODULE_PARM_DESC(id, "ID string for PS3 soundchip.");
/*
* PS3 audio register access
*/
static inline u32 read_reg(unsigned int reg)
{
return in_be32(the_card.mapped_mmio_vaddr + reg);
}
static inline void write_reg(unsigned int reg, u32 val)
{
out_be32(the_card.mapped_mmio_vaddr + reg, val);
}
static inline void update_reg(unsigned int reg, u32 or_val)
{
u32 newval = read_reg(reg) | or_val;
write_reg(reg, newval);
}
static inline void update_mask_reg(unsigned int reg, u32 mask, u32 or_val)
{
u32 newval = (read_reg(reg) & mask) | or_val;
write_reg(reg, newval);
}
/*
* ALSA defs
*/
static const struct snd_pcm_hardware snd_ps3_pcm_hw = {
.info = (SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_NONINTERLEAVED |
SNDRV_PCM_INFO_MMAP_VALID),
.formats = (SNDRV_PCM_FMTBIT_S16_BE |
SNDRV_PCM_FMTBIT_S24_BE),
.rates = (SNDRV_PCM_RATE_44100 |
SNDRV_PCM_RATE_48000 |
SNDRV_PCM_RATE_88200 |
SNDRV_PCM_RATE_96000),
.rate_min = 44100,
.rate_max = 96000,
.channels_min = 2, /* stereo only */
.channels_max = 2,
.buffer_bytes_max = PS3_AUDIO_FIFO_SIZE * 64,
/* interrupt by four stages */
.period_bytes_min = PS3_AUDIO_FIFO_STAGE_SIZE * 4,
.period_bytes_max = PS3_AUDIO_FIFO_STAGE_SIZE * 4,
.periods_min = 16,
.periods_max = 32, /* buffer_size_max/ period_bytes_max */
.fifo_size = PS3_AUDIO_FIFO_SIZE
};
static struct snd_pcm_ops snd_ps3_pcm_spdif_ops =
{
.open = snd_ps3_pcm_open,
.close = snd_ps3_pcm_close,
.prepare = snd_ps3_pcm_prepare,
.ioctl = snd_pcm_lib_ioctl,
.trigger = snd_ps3_pcm_trigger,
.pointer = snd_ps3_pcm_pointer,
.hw_params = snd_ps3_pcm_hw_params,
.hw_free = snd_ps3_pcm_hw_free
};
static int snd_ps3_verify_dma_stop(struct snd_ps3_card_info *card,
int count, int force_stop)
{
int dma_ch, done, retries, stop_forced = 0;
uint32_t status;
for (dma_ch = 0; dma_ch < 8; dma_ch ++) {
retries = count;
do {
status = read_reg(PS3_AUDIO_KICK(dma_ch)) &
PS3_AUDIO_KICK_STATUS_MASK;
switch (status) {
case PS3_AUDIO_KICK_STATUS_DONE:
case PS3_AUDIO_KICK_STATUS_NOTIFY:
case PS3_AUDIO_KICK_STATUS_CLEAR:
case PS3_AUDIO_KICK_STATUS_ERROR:
done = 1;
break;
default:
done = 0;
udelay(10);
}
} while (!done && --retries);
if (!retries && force_stop) {
pr_info("%s: DMA ch %d is not stopped.",
__func__, dma_ch);
/* last resort. force to stop dma.
* NOTE: this cause DMA done interrupts
*/
update_reg(PS3_AUDIO_CONFIG, PS3_AUDIO_CONFIG_CLEAR);
stop_forced = 1;
}
}
return stop_forced;
}
/*
* wait for all dma is done.
* NOTE: caller should reset card->running before call.
* If not, the interrupt handler will re-start DMA,
* then DMA is never stopped.
*/
static void snd_ps3_wait_for_dma_stop(struct snd_ps3_card_info *card)
{
int stop_forced;
/*
* wait for the last dma is done
*/
/*
* expected maximum DMA done time is 5.7ms + something (DMA itself).
* 5.7ms is from 16bit/sample 2ch 44.1Khz; the time next
* DMA kick event would occur.
*/
stop_forced = snd_ps3_verify_dma_stop(card, 700, 1);
/*
* clear outstanding interrupts.
*/
update_reg(PS3_AUDIO_INTR_0, 0);
update_reg(PS3_AUDIO_AX_IS, 0);
/*
*revert CLEAR bit since it will not reset automatically after DMA stop
*/
if (stop_forced)
update_mask_reg(PS3_AUDIO_CONFIG, ~PS3_AUDIO_CONFIG_CLEAR, 0);
/* ensure the hardware sees changes */
wmb();
}
static void snd_ps3_kick_dma(struct snd_ps3_card_info *card)
{
update_reg(PS3_AUDIO_KICK(0), PS3_AUDIO_KICK_REQUEST);
/* ensure the hardware sees the change */
wmb();
}
/*
* convert virtual addr to ioif bus addr.
*/
static dma_addr_t v_to_bus(struct snd_ps3_card_info *card,
void * paddr,
int ch)
{
return card->dma_start_bus_addr[ch] +
(paddr - card->dma_start_vaddr[ch]);
};
/*
* increment ring buffer pointer.
* NOTE: caller must hold write spinlock
*/
static void snd_ps3_bump_buffer(struct snd_ps3_card_info *card,
enum snd_ps3_ch ch, size_t byte_count,
int stage)
{
if (!stage)
card->dma_last_transfer_vaddr[ch] =
card->dma_next_transfer_vaddr[ch];
card->dma_next_transfer_vaddr[ch] += byte_count;
if ((card->dma_start_vaddr[ch] + (card->dma_buffer_size / 2)) <=
card->dma_next_transfer_vaddr[ch]) {
card->dma_next_transfer_vaddr[ch] = card->dma_start_vaddr[ch];
}
}
/*
* setup dmac to send data to audio and attenuate samples on the ring buffer
*/
static int snd_ps3_program_dma(struct snd_ps3_card_info *card,
enum snd_ps3_dma_filltype filltype)
{
/* this dmac does not support over 4G */
uint32_t dma_addr;
int fill_stages, dma_ch, stage;
enum snd_ps3_ch ch;
uint32_t ch0_kick_event = 0; /* initialize to mute gcc */
void *start_vaddr;
unsigned long irqsave;
int silent = 0;
switch (filltype) {
case SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL:
silent = 1;
/* intentionally fall thru */
case SND_PS3_DMA_FILLTYPE_FIRSTFILL:
ch0_kick_event = PS3_AUDIO_KICK_EVENT_ALWAYS;
break;
case SND_PS3_DMA_FILLTYPE_SILENT_RUNNING:
silent = 1;
/* intentionally fall thru */
case SND_PS3_DMA_FILLTYPE_RUNNING:
ch0_kick_event = PS3_AUDIO_KICK_EVENT_SERIALOUT0_EMPTY;
break;
}
snd_ps3_verify_dma_stop(card, 700, 0);
fill_stages = 4;
spin_lock_irqsave(&card->dma_lock, irqsave);
for (ch = 0; ch < 2; ch++) {
start_vaddr = card->dma_next_transfer_vaddr[0];
for (stage = 0; stage < fill_stages; stage ++) {
dma_ch = stage * 2 + ch;
if (silent)
dma_addr = card->null_buffer_start_dma_addr;
else
dma_addr =
v_to_bus(card,
card->dma_next_transfer_vaddr[ch],
ch);
write_reg(PS3_AUDIO_SOURCE(dma_ch),
(PS3_AUDIO_SOURCE_TARGET_SYSTEM_MEMORY |
dma_addr));
/* dst: fixed to 3wire#0 */
if (ch == 0)
write_reg(PS3_AUDIO_DEST(dma_ch),
(PS3_AUDIO_DEST_TARGET_AUDIOFIFO |
PS3_AUDIO_AO_3W_LDATA(0)));
else
write_reg(PS3_AUDIO_DEST(dma_ch),
(PS3_AUDIO_DEST_TARGET_AUDIOFIFO |
PS3_AUDIO_AO_3W_RDATA(0)));
/* count always 1 DMA block (1/2 stage = 128 bytes) */
write_reg(PS3_AUDIO_DMASIZE(dma_ch), 0);
/* bump pointer if needed */
if (!silent)
snd_ps3_bump_buffer(card, ch,
PS3_AUDIO_DMAC_BLOCK_SIZE,
stage);
/* kick event */
if (dma_ch == 0)
write_reg(PS3_AUDIO_KICK(dma_ch),
ch0_kick_event);
else
write_reg(PS3_AUDIO_KICK(dma_ch),
PS3_AUDIO_KICK_EVENT_AUDIO_DMA(dma_ch
- 1) |
PS3_AUDIO_KICK_REQUEST);
}
}
/* ensure the hardware sees the change */
wmb();
spin_unlock_irqrestore(&card->dma_lock, irqsave);
return 0;
}
/*
* audio mute on/off
* mute_on : 0 output enabled
* 1 mute
*/
static int snd_ps3_mute(int mute_on)
{
return ps3av_audio_mute(mute_on);
}
/*
* PCM operators
*/
static int snd_ps3_pcm_open(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
int pcm_index;
pcm_index = substream->pcm->device;
/* to retrieve substream/runtime in interrupt handler */
card->substream = substream;
runtime->hw = snd_ps3_pcm_hw;
card->start_delay = snd_ps3_start_delay;
/* mute off */
snd_ps3_mute(0); /* this function sleep */
snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
PS3_AUDIO_FIFO_STAGE_SIZE * 4 * 2);
return 0;
};
static int snd_ps3_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
size_t size;
/* alloc transport buffer */
size = params_buffer_bytes(hw_params);
snd_pcm_lib_malloc_pages(substream, size);
return 0;
};
static int snd_ps3_delay_to_bytes(struct snd_pcm_substream *substream,
unsigned int delay_ms)
{
int ret;
int rate ;
rate = substream->runtime->rate;
ret = snd_pcm_format_size(substream->runtime->format,
rate * delay_ms / 1000)
* substream->runtime->channels;
pr_debug(KERN_ERR "%s: time=%d rate=%d bytes=%ld, frames=%d, ret=%d\n",
__func__,
delay_ms,
rate,
snd_pcm_format_size(substream->runtime->format, rate),
rate * delay_ms / 1000,
ret);
return ret;
};
static int snd_ps3_pcm_prepare(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
unsigned long irqsave;
if (!snd_ps3_set_avsetting(substream)) {
/* some parameter changed */
write_reg(PS3_AUDIO_AX_IE,
PS3_AUDIO_AX_IE_ASOBEIE(0) |
PS3_AUDIO_AX_IE_ASOBUIE(0));
/*
* let SPDIF device re-lock with SPDIF signal,
* start with some silence
*/
card->silent = snd_ps3_delay_to_bytes(substream,
card->start_delay) /
(PS3_AUDIO_FIFO_STAGE_SIZE * 4); /* every 4 times */
}
/* restart ring buffer pointer */
spin_lock_irqsave(&card->dma_lock, irqsave);
{
card->dma_buffer_size = runtime->dma_bytes;
card->dma_last_transfer_vaddr[SND_PS3_CH_L] =
card->dma_next_transfer_vaddr[SND_PS3_CH_L] =
card->dma_start_vaddr[SND_PS3_CH_L] =
runtime->dma_area;
card->dma_start_bus_addr[SND_PS3_CH_L] = runtime->dma_addr;
card->dma_last_transfer_vaddr[SND_PS3_CH_R] =
card->dma_next_transfer_vaddr[SND_PS3_CH_R] =
card->dma_start_vaddr[SND_PS3_CH_R] =
runtime->dma_area + (runtime->dma_bytes / 2);
card->dma_start_bus_addr[SND_PS3_CH_R] =
runtime->dma_addr + (runtime->dma_bytes / 2);
pr_debug("%s: vaddr=%p bus=%#lx\n", __func__,
card->dma_start_vaddr[SND_PS3_CH_L],
card->dma_start_bus_addr[SND_PS3_CH_L]);
}
spin_unlock_irqrestore(&card->dma_lock, irqsave);
/* ensure the hardware sees the change */
mb();
return 0;
};
static int snd_ps3_pcm_trigger(struct snd_pcm_substream *substream,
int cmd)
{
struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
int ret = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
/* clear outstanding interrupts */
update_reg(PS3_AUDIO_AX_IS, 0);
spin_lock(&card->dma_lock);
{
card->running = 1;
}
spin_unlock(&card->dma_lock);
snd_ps3_program_dma(card,
SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
snd_ps3_kick_dma(card);
while (read_reg(PS3_AUDIO_KICK(7)) &
PS3_AUDIO_KICK_STATUS_MASK) {
udelay(1);
}
snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_RUNNING);
snd_ps3_kick_dma(card);
break;
case SNDRV_PCM_TRIGGER_STOP:
spin_lock(&card->dma_lock);
{
card->running = 0;
}
spin_unlock(&card->dma_lock);
snd_ps3_wait_for_dma_stop(card);
break;
default:
break;
}
return ret;
};
/*
* report current pointer
*/
static snd_pcm_uframes_t snd_ps3_pcm_pointer(
struct snd_pcm_substream *substream)
{
struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
size_t bytes;
snd_pcm_uframes_t ret;
spin_lock(&card->dma_lock);
{
bytes = (size_t)(card->dma_last_transfer_vaddr[SND_PS3_CH_L] -
card->dma_start_vaddr[SND_PS3_CH_L]);
}
spin_unlock(&card->dma_lock);
ret = bytes_to_frames(substream->runtime, bytes * 2);
return ret;
};
static int snd_ps3_pcm_hw_free(struct snd_pcm_substream *substream)
{
int ret;
ret = snd_pcm_lib_free_pages(substream);
return ret;
};
static int snd_ps3_pcm_close(struct snd_pcm_substream *substream)
{
/* mute on */
snd_ps3_mute(1);
return 0;
};
static void snd_ps3_audio_fixup(struct snd_ps3_card_info *card)
{
/*
* avsetting driver seems to never change the followings
* so, init them here once
*/
/* no dma interrupt needed */
write_reg(PS3_AUDIO_INTR_EN_0, 0);
/* use every 4 buffer empty interrupt */
update_mask_reg(PS3_AUDIO_AX_IC,
PS3_AUDIO_AX_IC_AASOIMD_MASK,
PS3_AUDIO_AX_IC_AASOIMD_EVERY4);
/* enable 3wire clocks */
update_mask_reg(PS3_AUDIO_AO_3WMCTRL,
~(PS3_AUDIO_AO_3WMCTRL_ASOBCLKD_DISABLED |
PS3_AUDIO_AO_3WMCTRL_ASOLRCKD_DISABLED),
0);
update_reg(PS3_AUDIO_AO_3WMCTRL,
PS3_AUDIO_AO_3WMCTRL_ASOPLRCK_DEFAULT);
}
/*
* av setting
* NOTE: calling this function may generate audio interrupt.
*/
static int snd_ps3_change_avsetting(struct snd_ps3_card_info *card)
{
int ret, retries, i;
pr_debug("%s: start\n", __func__);
ret = ps3av_set_audio_mode(card->avs.avs_audio_ch,
card->avs.avs_audio_rate,
card->avs.avs_audio_width,
card->avs.avs_audio_format,
card->avs.avs_audio_source);
/*
* Reset the following unwanted settings:
*/
/* disable all 3wire buffers */
update_mask_reg(PS3_AUDIO_AO_3WMCTRL,
~(PS3_AUDIO_AO_3WMCTRL_ASOEN(0) |
PS3_AUDIO_AO_3WMCTRL_ASOEN(1) |
PS3_AUDIO_AO_3WMCTRL_ASOEN(2) |
PS3_AUDIO_AO_3WMCTRL_ASOEN(3)),
0);
wmb(); /* ensure the hardware sees the change */
/* wait for actually stopped */
retries = 1000;
while ((read_reg(PS3_AUDIO_AO_3WMCTRL) &
(PS3_AUDIO_AO_3WMCTRL_ASORUN(0) |
PS3_AUDIO_AO_3WMCTRL_ASORUN(1) |
PS3_AUDIO_AO_3WMCTRL_ASORUN(2) |
PS3_AUDIO_AO_3WMCTRL_ASORUN(3))) &&
--retries) {
udelay(1);
}
/* reset buffer pointer */
for (i = 0; i < 4; i++) {
update_reg(PS3_AUDIO_AO_3WCTRL(i),
PS3_AUDIO_AO_3WCTRL_ASOBRST_RESET);
udelay(10);
}
wmb(); /* ensure the hardware actually start resetting */
/* enable 3wire#0 buffer */
update_reg(PS3_AUDIO_AO_3WMCTRL, PS3_AUDIO_AO_3WMCTRL_ASOEN(0));
/* In 24bit mode,ALSA inserts a zero byte at first byte of per sample */
update_mask_reg(PS3_AUDIO_AO_3WCTRL(0),
~PS3_AUDIO_AO_3WCTRL_ASODF,
PS3_AUDIO_AO_3WCTRL_ASODF_LSB);
update_mask_reg(PS3_AUDIO_AO_SPDCTRL(0),
~PS3_AUDIO_AO_SPDCTRL_SPODF,
PS3_AUDIO_AO_SPDCTRL_SPODF_LSB);
/* ensure all the setting above is written back to register */
wmb();
/* avsetting driver altered AX_IE, caller must reset it if you want */
pr_debug("%s: end\n", __func__);
return ret;
}
static int snd_ps3_init_avsetting(struct snd_ps3_card_info *card)
{
int ret;
pr_debug("%s: start\n", __func__);
card->avs.avs_audio_ch = PS3AV_CMD_AUDIO_NUM_OF_CH_2;
card->avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K;
card->avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16;
card->avs.avs_audio_format = PS3AV_CMD_AUDIO_FORMAT_PCM;
card->avs.avs_audio_source = PS3AV_CMD_AUDIO_SOURCE_SERIAL;
ret = snd_ps3_change_avsetting(card);
snd_ps3_audio_fixup(card);
/* to start to generate SPDIF signal, fill data */
snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
snd_ps3_kick_dma(card);
pr_debug("%s: end\n", __func__);
return ret;
}
/*
* set sampling rate according to the substream
*/
static int snd_ps3_set_avsetting(struct snd_pcm_substream *substream)
{
struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
struct snd_ps3_avsetting_info avs;
avs = card->avs;
pr_debug("%s: called freq=%d width=%d\n", __func__,
substream->runtime->rate,
snd_pcm_format_width(substream->runtime->format));
pr_debug("%s: before freq=%d width=%d\n", __func__,
card->avs.avs_audio_rate, card->avs.avs_audio_width);
/* sample rate */
switch (substream->runtime->rate) {
case 44100:
avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_44K;
break;
case 48000:
avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K;
break;
case 88200:
avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_88K;
break;
case 96000:
avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_96K;
break;
default:
pr_info("%s: invalid rate %d\n", __func__,
substream->runtime->rate);
return 1;
}
/* width */
switch (snd_pcm_format_width(substream->runtime->format)) {
case 16:
avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16;
break;
case 24:
avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_24;
break;
default:
pr_info("%s: invalid width %d\n", __func__,
snd_pcm_format_width(substream->runtime->format));
return 1;
}
if ((card->avs.avs_audio_width != avs.avs_audio_width) ||
(card->avs.avs_audio_rate != avs.avs_audio_rate)) {
card->avs = avs;
snd_ps3_change_avsetting(card);
pr_debug("%s: after freq=%d width=%d\n", __func__,
card->avs.avs_audio_rate, card->avs.avs_audio_width);
return 0;
} else
return 1;
}
static int snd_ps3_map_mmio(void)
{
the_card.mapped_mmio_vaddr =
ioremap(the_card.ps3_dev->m_region->bus_addr,
the_card.ps3_dev->m_region->len);
if (!the_card.mapped_mmio_vaddr) {
pr_info("%s: ioremap 0 failed p=%#lx l=%#lx \n",
__func__, the_card.ps3_dev->m_region->lpar_addr,
the_card.ps3_dev->m_region->len);
return -ENXIO;
}
return 0;
};
static void snd_ps3_unmap_mmio(void)
{
iounmap(the_card.mapped_mmio_vaddr);
the_card.mapped_mmio_vaddr = NULL;
}
static int snd_ps3_allocate_irq(void)
{
int ret;
u64 lpar_addr, lpar_size;
u64 __iomem *mapped;
/* FIXME: move this to device_init (H/W probe) */
/* get irq outlet */
ret = lv1_gpu_device_map(1, &lpar_addr, &lpar_size);
if (ret) {
pr_info("%s: device map 1 failed %d\n", __func__,
ret);
return -ENXIO;
}
mapped = ioremap(lpar_addr, lpar_size);
if (!mapped) {
pr_info("%s: ioremap 1 failed \n", __func__);
return -ENXIO;
}
the_card.audio_irq_outlet = in_be64(mapped);
iounmap(mapped);
ret = lv1_gpu_device_unmap(1);
if (ret)
pr_info("%s: unmap 1 failed\n", __func__);
/* irq */
ret = ps3_irq_plug_setup(PS3_BINDING_CPU_ANY,
the_card.audio_irq_outlet,
&the_card.irq_no);
if (ret) {
pr_info("%s:ps3_alloc_irq failed (%d)\n", __func__, ret);
return ret;
}
ret = request_irq(the_card.irq_no, snd_ps3_interrupt, IRQF_DISABLED,
SND_PS3_DRIVER_NAME, &the_card);
if (ret) {
pr_info("%s: request_irq failed (%d)\n", __func__, ret);
goto cleanup_irq;
}
return 0;
cleanup_irq:
ps3_irq_plug_destroy(the_card.irq_no);
return ret;
};
static void snd_ps3_free_irq(void)
{
free_irq(the_card.irq_no, &the_card);
ps3_irq_plug_destroy(the_card.irq_no);
}
static void snd_ps3_audio_set_base_addr(uint64_t ioaddr_start)
{
uint64_t val;
int ret;
val = (ioaddr_start & (0x0fUL << 32)) >> (32 - 20) |
(0x03UL << 24) |
(0x0fUL << 12) |
(PS3_AUDIO_IOID);
ret = lv1_gpu_attribute(0x100, 0x007, val, 0, 0);
if (ret)
pr_info("%s: gpu_attribute failed %d\n", __func__,
ret);
}
static int __init snd_ps3_driver_probe(struct ps3_system_bus_device *dev)
{
int ret;
u64 lpar_addr, lpar_size;
BUG_ON(!firmware_has_feature(FW_FEATURE_PS3_LV1));
BUG_ON(dev->match_id != PS3_MATCH_ID_SOUND);
the_card.ps3_dev = dev;
ret = ps3_open_hv_device(dev);
if (ret)
return -ENXIO;
/* setup MMIO */
ret = lv1_gpu_device_map(2, &lpar_addr, &lpar_size);
if (ret) {
pr_info("%s: device map 2 failed %d\n", __func__, ret);
goto clean_open;
}
ps3_mmio_region_init(dev, dev->m_region, lpar_addr, lpar_size,
PAGE_SHIFT);
ret = snd_ps3_map_mmio();
if (ret)
goto clean_dev_map;
/* setup DMA area */
ps3_dma_region_init(dev, dev->d_region,
PAGE_SHIFT, /* use system page size */
0, /* dma type; not used */
NULL,
_ALIGN_UP(SND_PS3_DMA_REGION_SIZE, PAGE_SIZE));
dev->d_region->ioid = PS3_AUDIO_IOID;
ret = ps3_dma_region_create(dev->d_region);
if (ret) {
pr_info("%s: region_create\n", __func__);
goto clean_mmio;
}
snd_ps3_audio_set_base_addr(dev->d_region->bus_addr);
/* CONFIG_SND_PS3_DEFAULT_START_DELAY */
the_card.start_delay = snd_ps3_start_delay;
/* irq */
if (snd_ps3_allocate_irq()) {
ret = -ENXIO;
goto clean_dma_region;
}
/* create card instance */
the_card.card = snd_card_new(index, id, THIS_MODULE, 0);
if (!the_card.card) {
ret = -ENXIO;
goto clean_irq;
}
strcpy(the_card.card->driver, "PS3");
strcpy(the_card.card->shortname, "PS3");
strcpy(the_card.card->longname, "PS3 sound");
/* create PCM devices instance */
/* NOTE:this driver works assuming pcm:substream = 1:1 */
ret = snd_pcm_new(the_card.card,
"SPDIF",
0, /* instance index, will be stored pcm.device*/
1, /* output substream */
0, /* input substream */
&(the_card.pcm));
if (ret)
goto clean_card;
the_card.pcm->private_data = &the_card;
strcpy(the_card.pcm->name, "SPDIF");
/* set pcm ops */
snd_pcm_set_ops(the_card.pcm, SNDRV_PCM_STREAM_PLAYBACK,
&snd_ps3_pcm_spdif_ops);
the_card.pcm->info_flags = SNDRV_PCM_INFO_NONINTERLEAVED;
/* pre-alloc PCM DMA buffer*/
ret = snd_pcm_lib_preallocate_pages_for_all(the_card.pcm,
SNDRV_DMA_TYPE_DEV,
&dev->core,
SND_PS3_PCM_PREALLOC_SIZE,
SND_PS3_PCM_PREALLOC_SIZE);
if (ret < 0) {
pr_info("%s: prealloc failed\n", __func__);
goto clean_card;
}
/*
* allocate null buffer
* its size should be lager than PS3_AUDIO_FIFO_STAGE_SIZE * 2
* PAGE_SIZE is enogh
*/
if (!(the_card.null_buffer_start_vaddr =
dma_alloc_coherent(&the_card.ps3_dev->core,
PAGE_SIZE,
&the_card.null_buffer_start_dma_addr,
GFP_KERNEL))) {
pr_info("%s: nullbuffer alloc failed\n", __func__);
goto clean_preallocate;
}
pr_debug("%s: null vaddr=%p dma=%#lx\n", __func__,
the_card.null_buffer_start_vaddr,
the_card.null_buffer_start_dma_addr);
/* set default sample rate/word width */
snd_ps3_init_avsetting(&the_card);
/* register the card */
snd_card_set_dev(the_card.card, &dev->core);
ret = snd_card_register(the_card.card);
if (ret < 0)
goto clean_dma_map;
pr_info("%s started. start_delay=%dms\n",
the_card.card->longname, the_card.start_delay);
return 0;
clean_dma_map:
dma_free_coherent(&the_card.ps3_dev->core,
PAGE_SIZE,
the_card.null_buffer_start_vaddr,
the_card.null_buffer_start_dma_addr);
clean_preallocate:
snd_pcm_lib_preallocate_free_for_all(the_card.pcm);
clean_card:
snd_card_free(the_card.card);
clean_irq:
snd_ps3_free_irq();
clean_dma_region:
ps3_dma_region_free(dev->d_region);
clean_mmio:
snd_ps3_unmap_mmio();
clean_dev_map:
lv1_gpu_device_unmap(2);
clean_open:
ps3_close_hv_device(dev);
/*
* there is no destructor function to pcm.
* midlayer automatically releases if the card removed
*/
return ret;
}; /* snd_ps3_probe */
/* called when module removal */
static int snd_ps3_driver_remove(struct ps3_system_bus_device *dev)
{
int ret;
pr_info("%s:start id=%d\n", __func__, dev->match_id);
if (dev->match_id != PS3_MATCH_ID_SOUND)
return -ENXIO;
/*
* ctl and preallocate buffer will be freed in
* snd_card_free
*/
ret = snd_card_free(the_card.card);
if (ret)
pr_info("%s: ctl freecard=%d\n", __func__, ret);
dma_free_coherent(&dev->core,
PAGE_SIZE,
the_card.null_buffer_start_vaddr,
the_card.null_buffer_start_dma_addr);
ps3_dma_region_free(dev->d_region);
snd_ps3_free_irq();
snd_ps3_unmap_mmio();
lv1_gpu_device_unmap(2);
ps3_close_hv_device(dev);
pr_info("%s:end id=%d\n", __func__, dev->match_id);
return 0;
} /* snd_ps3_remove */
static struct ps3_system_bus_driver snd_ps3_bus_driver_info = {
.match_id = PS3_MATCH_ID_SOUND,
.probe = snd_ps3_driver_probe,
.remove = snd_ps3_driver_remove,
.shutdown = snd_ps3_driver_remove,
.core = {
.name = SND_PS3_DRIVER_NAME,
.owner = THIS_MODULE,
},
};
/*
* Interrupt handler
*/
static irqreturn_t snd_ps3_interrupt(int irq, void *dev_id)
{
uint32_t port_intr;
int underflow_occured = 0;
struct snd_ps3_card_info *card = dev_id;
if (!card->running) {
update_reg(PS3_AUDIO_AX_IS, 0);
update_reg(PS3_AUDIO_INTR_0, 0);
return IRQ_HANDLED;
}
port_intr = read_reg(PS3_AUDIO_AX_IS);
/*
*serial buffer empty detected (every 4 times),
*program next dma and kick it
*/
if (port_intr & PS3_AUDIO_AX_IE_ASOBEIE(0)) {
write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBEIE(0));
if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) {
write_reg(PS3_AUDIO_AX_IS, port_intr);
underflow_occured = 1;
}
if (card->silent) {
/* we are still in silent time */
snd_ps3_program_dma(card,
(underflow_occured) ?
SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL :
SND_PS3_DMA_FILLTYPE_SILENT_RUNNING);
snd_ps3_kick_dma(card);
card->silent --;
} else {
snd_ps3_program_dma(card,
(underflow_occured) ?
SND_PS3_DMA_FILLTYPE_FIRSTFILL :
SND_PS3_DMA_FILLTYPE_RUNNING);
snd_ps3_kick_dma(card);
snd_pcm_period_elapsed(card->substream);
}
} else if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) {
write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBUIE(0));
/*
* serial out underflow, but buffer empty not detected.
* in this case, fill fifo with 0 to recover. After
* filling dummy data, serial automatically start to
* consume them and then will generate normal buffer
* empty interrupts.
* If both buffer underflow and buffer empty are occured,
* it is better to do nomal data transfer than empty one
*/
snd_ps3_program_dma(card,
SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
snd_ps3_kick_dma(card);
snd_ps3_program_dma(card,
SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
snd_ps3_kick_dma(card);
}
/* clear interrupt cause */
return IRQ_HANDLED;
};
/*
* module/subsystem initialize/terminate
*/
static int __init snd_ps3_init(void)
{
int ret;
if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
return -ENXIO;
memset(&the_card, 0, sizeof(the_card));
spin_lock_init(&the_card.dma_lock);
/* register systembus DRIVER, this calls our probe() func */
ret = ps3_system_bus_driver_register(&snd_ps3_bus_driver_info);
return ret;
}
static void __exit snd_ps3_exit(void)
{
ps3_system_bus_driver_unregister(&snd_ps3_bus_driver_info);
}
MODULE_ALIAS(PS3_MODULE_ALIAS_SOUND);
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