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M7350/kernel/arch/arm/mach-msm/qdsp5/audio_ac3.c
T f9cc65cfda M7350v1_en_gpl
2024-09-09 08:52:07 +00:00

1761 lines
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/* arch/arm/mach-msm/audio_ac3.c
*
* Copyright (c) 2008-2009, 2011-2013 The Linux Foundation. All rights reserved.
*
* This code also borrows from audio_aac.c, which is
* Copyright (C) 2008 Google, Inc.
* Copyright (C) 2008 HTC Corporation
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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, you can find it at http://www.fsf.org.
*/
#include <asm/atomic.h>
#include <asm/ioctls.h>
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/miscdevice.h>
#include <linux/uaccess.h>
#include <linux/kthread.h>
#include <linux/wait.h>
#include <linux/dma-mapping.h>
#include <linux/debugfs.h>
#include <linux/delay.h>
#include <linux/list.h>
#include <linux/earlysuspend.h>
#include <linux/slab.h>
#include <linux/msm_audio.h>
#include <linux/memory_alloc.h>
#include <linux/msm_audio_ac3.h>
#include <linux/msm_ion.h>
#include <mach/msm_adsp.h>
#include <mach/iommu.h>
#include <mach/iommu_domains.h>
#include <mach/qdsp5/qdsp5audppcmdi.h>
#include <mach/qdsp5/qdsp5audppmsg.h>
#include <mach/qdsp5/qdsp5audpp.h>
#include <mach/qdsp5/qdsp5audplaycmdi.h>
#include <mach/qdsp5/qdsp5audplaymsg.h>
#include <mach/qdsp5/qdsp5rmtcmdi.h>
#include <mach/debug_mm.h>
#include <mach/msm_memtypes.h>
#include "audmgr.h"
#define BUFSZ 4096
#define DMASZ (BUFSZ * 2)
#define AUDDEC_DEC_AC3 23
#define PCM_BUFSZ 6168 /* maximum frame size is 512 * 6 samples */
#define PCM_BUF_MAX_COUNT 5 /* DSP only accepts 5 buffers at most
* but support 2 buffers currently
*/
#define ROUTING_MODE_FTRT 1
#define ROUTING_MODE_RT 2
/* Decoder status received from AUDPPTASK */
#define AUDPP_DEC_STATUS_SLEEP 0
#define AUDPP_DEC_STATUS_INIT 1
#define AUDPP_DEC_STATUS_CFG 2
#define AUDPP_DEC_STATUS_PLAY 3
#define AUDAC3_METAFIELD_MASK 0xFFFF0000
#define AUDAC3_EOS_FLG_OFFSET 0x0A /* Offset from beginning of buffer */
#define AUDAC3_EOS_FLG_MASK 0x01
#define AUDAC3_EOS_NONE 0x0 /* No EOS detected */
#define AUDAC3_EOS_SET 0x1 /* EOS set in meta field */
#define AUDAC3_EVENT_NUM 10 /* Default number of pre-allocated event packets */
struct buffer {
void *data;
unsigned size;
unsigned used; /* Input usage actual DSP produced PCM size */
unsigned addr;
unsigned short mfield_sz; /* only useful for data has meta field */
};
#ifdef CONFIG_HAS_EARLYSUSPEND
struct audac3_suspend_ctl {
struct early_suspend node;
struct audio *audio;
};
#endif
struct audac3_event {
struct list_head list;
int event_type;
union msm_audio_event_payload payload;
};
struct audio {
struct buffer out[2];
spinlock_t dsp_lock;
uint8_t out_head;
uint8_t out_tail;
uint8_t out_needed; /* number of buffers the dsp is waiting for */
atomic_t out_bytes;
struct mutex lock;
struct mutex write_lock;
wait_queue_head_t write_wait;
/* Host PCM section */
struct buffer in[PCM_BUF_MAX_COUNT];
struct mutex read_lock;
wait_queue_head_t read_wait; /* Wait queue for read */
char *read_data; /* pointer to reader buffer */
int32_t read_phys; /* physical address of reader buffer */
uint8_t read_next; /* index to input buffers to be read next */
uint8_t fill_next; /* index to buffer that DSP should be filling */
uint8_t pcm_buf_count; /* number of pcm buffer allocated */
/* ---- End of Host PCM section */
struct msm_adsp_module *audplay;
struct audmgr audmgr;
struct msm_audio_ac3_config ac3_config;
/* data allocated for various buffers */
char *data;
int32_t phys; /* physical address of write buffer */
void *map_v_read;
void *map_v_write;
int mfield; /* meta field embedded in data */
int rflush; /* Read flush */
int wflush; /* Write flush */
uint8_t opened;
uint8_t enabled;
uint8_t running;
uint8_t stopped; /* set when stopped, cleared on flush */
uint8_t pcm_feedback;
uint8_t buf_refresh;
int teos; /* valid only if tunnel mode & no data left for decoder */
enum msm_aud_decoder_state dec_state; /* Represents decoder state */
int rmt_resource_released;
const char *module_name;
unsigned queue_id;
uint16_t dec_id;
uint32_t read_ptr_offset;
#ifdef CONFIG_HAS_EARLYSUSPEND
struct audac3_suspend_ctl suspend_ctl;
#endif
#ifdef CONFIG_DEBUG_FS
struct dentry *dentry;
#endif
wait_queue_head_t wait;
struct list_head free_event_queue;
struct list_head event_queue;
wait_queue_head_t event_wait;
spinlock_t event_queue_lock;
struct mutex get_event_lock;
int event_abort;
int eq_enable;
int eq_needs_commit;
audpp_cmd_cfg_object_params_eqalizer eq;
audpp_cmd_cfg_object_params_volume vol_pan;
struct ion_client *client;
struct ion_handle *input_buff_handle;
struct ion_handle *output_buff_handle;
};
static int auddec_dsp_config(struct audio *audio, int enable);
static void audpp_cmd_cfg_adec_params(struct audio *audio);
static void audpp_cmd_cfg_routing_mode(struct audio *audio);
static void audac3_send_data(struct audio *audio, unsigned needed);
static void audac3_dsp_event(void *private, unsigned id, uint16_t *msg);
static void audac3_config_hostpcm(struct audio *audio);
static void audac3_buffer_refresh(struct audio *audio);
#ifdef CONFIG_HAS_EARLYSUSPEND
static void audac3_post_event(struct audio *audio, int type,
union msm_audio_event_payload payload);
#endif
static int rmt_put_resource(struct audio *audio)
{
struct aud_codec_config_cmd cmd;
unsigned short client_idx;
cmd.cmd_id = RM_CMD_AUD_CODEC_CFG;
cmd.client_id = RM_AUD_CLIENT_ID;
cmd.task_id = audio->dec_id;
cmd.enable = RMT_DISABLE;
cmd.dec_type = AUDDEC_DEC_AC3;
client_idx = ((cmd.client_id << 8) | cmd.task_id);
return put_adsp_resource(client_idx, &cmd, sizeof(cmd));
}
static int rmt_get_resource(struct audio *audio)
{
struct aud_codec_config_cmd cmd;
unsigned short client_idx;
cmd.cmd_id = RM_CMD_AUD_CODEC_CFG;
cmd.client_id = RM_AUD_CLIENT_ID;
cmd.task_id = audio->dec_id;
cmd.enable = RMT_ENABLE;
cmd.dec_type = AUDDEC_DEC_AC3;
client_idx = ((cmd.client_id << 8) | cmd.task_id);
return get_adsp_resource(client_idx, &cmd, sizeof(cmd));
}
/* must be called with audio->lock held */
static int audac3_enable(struct audio *audio)
{
struct audmgr_config cfg;
int rc;
MM_DBG("\n"); /* Macro prints the file name and function */
if (audio->enabled)
return 0;
if (audio->rmt_resource_released == 1) {
audio->rmt_resource_released = 0;
rc = rmt_get_resource(audio);
if (rc) {
MM_ERR("ADSP resources are not available for AC3"\
" session 0x%08x on decoder: %d\n Ignoring"\
" error and going ahead with the playback\n",
(int)audio, audio->dec_id);
}
}
audio->dec_state = MSM_AUD_DECODER_STATE_NONE;
audio->out_tail = 0;
audio->out_needed = 0;
if (audio->pcm_feedback == TUNNEL_MODE_PLAYBACK) {
cfg.tx_rate = RPC_AUD_DEF_SAMPLE_RATE_NONE;
cfg.rx_rate = RPC_AUD_DEF_SAMPLE_RATE_48000;
cfg.def_method = RPC_AUD_DEF_METHOD_PLAYBACK;
cfg.codec = RPC_AUD_DEF_CODEC_AC3;
cfg.snd_method = RPC_SND_METHOD_MIDI;
rc = audmgr_enable(&audio->audmgr, &cfg);
if (rc < 0) {
msm_adsp_dump(audio->audplay);
return rc;
}
}
if (msm_adsp_enable(audio->audplay)) {
MM_ERR("msm_adsp_enable(audplay) failed\n");
if (audio->pcm_feedback == TUNNEL_MODE_PLAYBACK)
audmgr_disable(&audio->audmgr);
return -ENODEV;
}
if (audpp_enable(audio->dec_id, audac3_dsp_event, audio)) {
MM_ERR("audpp_enable() failed\n");
msm_adsp_disable(audio->audplay);
if (audio->pcm_feedback == TUNNEL_MODE_PLAYBACK)
audmgr_disable(&audio->audmgr);
return -ENODEV;
}
audio->enabled = 1;
return 0;
}
/* must be called with audio->lock held */
static int audac3_disable(struct audio *audio)
{
int rc = 0;
if (audio->enabled) {
audio->enabled = 0;
audio->dec_state = MSM_AUD_DECODER_STATE_NONE;
auddec_dsp_config(audio, 0);
rc = wait_event_interruptible_timeout(audio->wait,
audio->dec_state != MSM_AUD_DECODER_STATE_NONE,
msecs_to_jiffies(MSM_AUD_DECODER_WAIT_MS));
if (rc == 0)
rc = -ETIMEDOUT;
else if (audio->dec_state != MSM_AUD_DECODER_STATE_CLOSE)
rc = -EFAULT;
else
rc = 0;
audio->stopped = 1;
wake_up(&audio->write_wait);
wake_up(&audio->read_wait);
msm_adsp_disable(audio->audplay);
audpp_disable(audio->dec_id, audio);
if (audio->pcm_feedback == TUNNEL_MODE_PLAYBACK) {
rc = audmgr_disable(&audio->audmgr);
if (rc < 0)
msm_adsp_dump(audio->audplay);
}
audio->out_needed = 0;
rmt_put_resource(audio);
audio->rmt_resource_released = 1;
}
return rc;
}
/* ------------------- dsp --------------------- */
static void audac3_update_pcm_buf_entry(struct audio *audio,
uint32_t *payload)
{
uint8_t index;
unsigned long flags;
if (audio->rflush)
return;
spin_lock_irqsave(&audio->dsp_lock, flags);
for (index = 0; index < payload[1]; index++) {
if (audio->in[audio->fill_next].addr
== payload[2 + index * 2]) {
MM_DBG("in[%d] ready\n", audio->fill_next);
audio->in[audio->fill_next].used =
payload[3 + index * 2];
if ((++audio->fill_next) == audio->pcm_buf_count)
audio->fill_next = 0;
} else {
MM_ERR("expected=%x ret=%x\n",
audio->in[audio->fill_next].addr,
payload[1 + index * 2]);
break;
}
}
if (audio->in[audio->fill_next].used == 0) {
audac3_buffer_refresh(audio);
} else {
MM_DBG("read cannot keep up\n");
audio->buf_refresh = 1;
}
wake_up(&audio->read_wait);
spin_unlock_irqrestore(&audio->dsp_lock, flags);
}
static void audplay_dsp_event(void *data, unsigned id, size_t len,
void (*getevent) (void *ptr, size_t len))
{
struct audio *audio = data;
uint32_t msg[28];
getevent(msg, sizeof(msg));
MM_DBG("msg_id=%x\n", id);
switch (id) {
case AUDPLAY_MSG_DEC_NEEDS_DATA:
audac3_send_data(audio, 1);
break;
case AUDPLAY_MSG_BUFFER_UPDATE:
MM_DBG("\n"); /* Macro prints the file name and function */
audac3_update_pcm_buf_entry(audio, msg);
break;
case ADSP_MESSAGE_ID:
MM_DBG("Received ADSP event: module enable(audplaytask)\n");
break;
default:
MM_ERR("unexpected message from decoder\n");
}
}
static void audac3_dsp_event(void *private, unsigned id, uint16_t *msg)
{
struct audio *audio = private;
switch (id) {
case AUDPP_MSG_STATUS_MSG:{
unsigned status = msg[1];
switch (status) {
case AUDPP_DEC_STATUS_SLEEP: {
uint16_t reason = msg[2];
MM_DBG("decoder status:sleep reason =0x%04x\n",
reason);
if ((reason == AUDPP_MSG_REASON_MEM)
|| (reason ==
AUDPP_MSG_REASON_NODECODER)) {
audio->dec_state =
MSM_AUD_DECODER_STATE_FAILURE;
wake_up(&audio->wait);
} else if (reason == AUDPP_MSG_REASON_NONE) {
/* decoder is in disable state */
audio->dec_state =
MSM_AUD_DECODER_STATE_CLOSE;
wake_up(&audio->wait);
}
break;
}
case AUDPP_DEC_STATUS_INIT:
MM_DBG("decoder status: init\n");
if (audio->pcm_feedback)
audpp_cmd_cfg_routing_mode(audio);
else
audpp_cmd_cfg_adec_params(audio);
break;
case AUDPP_DEC_STATUS_CFG:
MM_DBG("decoder status: cfg\n");
break;
case AUDPP_DEC_STATUS_PLAY:
MM_DBG("decoder status: play\n");
if (audio->pcm_feedback) {
audac3_config_hostpcm(audio);
audac3_buffer_refresh(audio);
}
audio->dec_state =
MSM_AUD_DECODER_STATE_SUCCESS;
wake_up(&audio->wait);
break;
default:
MM_ERR("unknown decoder status\n");
}
break;
}
case AUDPP_MSG_CFG_MSG:
if (msg[0] == AUDPP_MSG_ENA_ENA) {
MM_DBG("CFG_MSG ENABLE\n");
auddec_dsp_config(audio, 1);
audio->out_needed = 0;
audio->running = 1;
audpp_dsp_set_vol_pan(audio->dec_id, &audio->vol_pan);
audpp_dsp_set_eq(audio->dec_id, audio->eq_enable,
&audio->eq);
audpp_avsync(audio->dec_id, 22050);
} else if (msg[0] == AUDPP_MSG_ENA_DIS) {
MM_DBG("CFG_MSG DISABLE\n");
audpp_avsync(audio->dec_id, 0);
audio->running = 0;
} else {
MM_DBG("CFG_MSG %d?\n", msg[0]);
}
break;
case AUDPP_MSG_ROUTING_ACK:
MM_DBG("ROUTING_ACK\n");
audpp_cmd_cfg_adec_params(audio);
break;
case AUDPP_MSG_FLUSH_ACK:
MM_DBG("FLUSH_ACK\n");
audio->wflush = 0;
audio->rflush = 0;
wake_up(&audio->write_wait);
if (audio->pcm_feedback)
audac3_buffer_refresh(audio);
break;
case AUDPP_MSG_PCMDMAMISSED:
MM_DBG("PCMDMAMISSED\n");
audio->teos = 1;
wake_up(&audio->write_wait);
break;
default:
MM_ERR("UNKNOWN (%d)\n", id);
}
}
struct msm_adsp_ops audplay_adsp_ops_ac3 = {
.event = audplay_dsp_event,
};
#define audplay_send_queue0(audio, cmd, len) \
msm_adsp_write(audio->audplay, audio->queue_id, \
cmd, len)
static int auddec_dsp_config(struct audio *audio, int enable)
{
u16 cfg_dec_cmd[AUDPP_CMD_CFG_DEC_TYPE_LEN / sizeof(unsigned short)];
memset(cfg_dec_cmd, 0, sizeof(cfg_dec_cmd));
cfg_dec_cmd[0] = AUDPP_CMD_CFG_DEC_TYPE;
if (enable)
cfg_dec_cmd[1 + audio->dec_id] = AUDPP_CMD_UPDATDE_CFG_DEC |
AUDPP_CMD_ENA_DEC_V | AUDDEC_DEC_AC3;
else
cfg_dec_cmd[1 + audio->dec_id] = AUDPP_CMD_UPDATDE_CFG_DEC |
AUDPP_CMD_DIS_DEC_V;
return audpp_send_queue1(&cfg_dec_cmd, sizeof(cfg_dec_cmd));
}
static int get_frequency_index(unsigned short frequency)
{
switch (frequency) {
case 48000: return 0;
case 44100: return 1;
case 32000: return 2;
default: return -EINVAL;
}
}
static void audpp_cmd_cfg_adec_params(struct audio *audio)
{
struct audpp_cmd_cfg_adec_params_ac3 cmd;
memset(&cmd, 0, sizeof(cmd));
cmd.common.cmd_id = AUDPP_CMD_CFG_ADEC_PARAMS;
/* dsp needs word size */
cmd.common.length = AUDPP_CMD_CFG_ADEC_PARAMS_AC3_LEN >> 1;
cmd.common.dec_id = audio->dec_id;
cmd.common.input_sampling_frequency = (audio->ac3_config).fsCod;
cmd.index[0] = (((audio->ac3_config).numChans << 8) & 0xFF00) |
((audio->ac3_config).wordSize & 0x00FF);
cmd.index[1] = (((audio->ac3_config).kCapableMode << 12) & 0xF000) |
(((audio->ac3_config).compMode << 8) & 0x0F00) |
(((audio->ac3_config).outLfeOn << 4) & 0x00F0) |
((audio->ac3_config).outputMode & 0x000F);
cmd.index[2] = ((((audio->ac3_config).stereoMode << 12) & 0xF000) |
(((audio->ac3_config).dualMonoMode << 8) & 0x0F00) |
((get_frequency_index((audio->ac3_config).fsCod) << 4)
& 0x00F0)) & 0xFFF0; /* last 4 bytes are reserved */
cmd.index[3] = (audio->ac3_config).pcmScaleFac;
cmd.index[4] = (audio->ac3_config).dynRngScaleHi;
cmd.index[5] = (audio->ac3_config).dynRngScaleLow;
cmd.index[6] = (((audio->ac3_config).user_downmix_flag << 8) & 0xFF00)|
((audio->ac3_config).user_karaoke_flag & 0x00FF);
cmd.index[7] = (audio->ac3_config).dm_address_high;
cmd.index[8] = (audio->ac3_config).dm_address_low;
cmd.index[9] = (audio->ac3_config).ko_address_high;
cmd.index[10] = (audio->ac3_config).ko_address_high;
cmd.index[11] = (((audio->ac3_config).max_rep_count << 1) & 0xFFFE) |
((audio->ac3_config).error_concealment & 0x0001);
cmd.index[12] = (((audio->ac3_config).channel_routing_mode[3] << 12)
& 0xF000) |
(((audio->ac3_config).channel_routing_mode[2] << 8)
& 0x0F00) |
(((audio->ac3_config).channel_routing_mode[1] << 4)
& 0x00F0) |
((audio->ac3_config).channel_routing_mode[0] & 0x000F);
cmd.index[13] = ((((audio->ac3_config).channel_routing_mode[5] << 12)
& 0xF000) |
(((audio->ac3_config).channel_routing_mode[4] << 8)
& 0x0F00)) & 0xFF00; /* last 8 bytes are reserved */
audpp_send_queue2(&cmd, sizeof(cmd));
}
static void audpp_cmd_cfg_routing_mode(struct audio *audio)
{
struct audpp_cmd_routing_mode cmd;
MM_DBG("\n"); /* Macro prints the file name and function */
memset(&cmd, 0, sizeof(cmd));
cmd.cmd_id = AUDPP_CMD_ROUTING_MODE;
cmd.object_number = audio->dec_id;
if (audio->pcm_feedback)
cmd.routing_mode = ROUTING_MODE_FTRT;
else
cmd.routing_mode = ROUTING_MODE_RT;
audpp_send_queue1(&cmd, sizeof(cmd));
}
static int audplay_dsp_send_data_avail(struct audio *audio,
unsigned idx, unsigned len)
{
struct audplay_cmd_bitstream_data_avail_nt2 cmd;
cmd.cmd_id = AUDPLAY_CMD_BITSTREAM_DATA_AVAIL_NT2;
if (audio->mfield)
cmd.decoder_id = AUDAC3_METAFIELD_MASK |
(audio->out[idx].mfield_sz >> 1);
else
cmd.decoder_id = audio->dec_id;
cmd.buf_ptr = audio->out[idx].addr;
cmd.buf_size = len / 2;
cmd.partition_number = 0;
/* complete writes to the input buffer */
wmb();
return audplay_send_queue0(audio, &cmd, sizeof(cmd));
}
static void audac3_buffer_refresh(struct audio *audio)
{
struct audplay_cmd_buffer_refresh refresh_cmd;
refresh_cmd.cmd_id = AUDPLAY_CMD_BUFFER_REFRESH;
refresh_cmd.num_buffers = 1;
refresh_cmd.buf0_address = audio->in[audio->fill_next].addr;
refresh_cmd.buf0_length = audio->in[audio->fill_next].size;
refresh_cmd.buf_read_count = 0;
MM_DBG("buf0_addr=%x buf0_len=%d\n", refresh_cmd.buf0_address,
refresh_cmd.buf0_length);
(void)audplay_send_queue0(audio, &refresh_cmd, sizeof(refresh_cmd));
}
static void audac3_config_hostpcm(struct audio *audio)
{
struct audplay_cmd_hpcm_buf_cfg cfg_cmd;
MM_DBG("\n"); /* Macro prints the file name and function */
cfg_cmd.cmd_id = AUDPLAY_CMD_HPCM_BUF_CFG;
cfg_cmd.max_buffers = 1;
cfg_cmd.byte_swap = 0;
cfg_cmd.hostpcm_config = (0x8000) | (0x4000);
cfg_cmd.feedback_frequency = 1;
cfg_cmd.partition_number = 0;
(void)audplay_send_queue0(audio, &cfg_cmd, sizeof(cfg_cmd));
}
static void audac3_send_data(struct audio *audio, unsigned needed)
{
struct buffer *frame;
unsigned long flags;
spin_lock_irqsave(&audio->dsp_lock, flags);
if (!audio->running)
goto done;
if (needed && !audio->wflush) {
/* We were called from the callback because the DSP
* requested more data. Note that the DSP does want
* more data, and if a buffer was in-flight, mark it
* as available (since the DSP must now be done with
* it).
*/
audio->out_needed = 1;
frame = audio->out + audio->out_tail;
if (frame->used == 0xffffffff) {
MM_DBG("frame %d free\n", audio->out_tail);
frame->used = 0;
audio->out_tail ^= 1;
wake_up(&audio->write_wait);
}
}
if (audio->out_needed) {
/* If the DSP currently wants data and we have a
* buffer available, we will send it and reset
* the needed flag. We'll mark the buffer as in-flight
* so that it won't be recycled until the next buffer
* is requested
*/
frame = audio->out + audio->out_tail;
if (frame->used) {
BUG_ON(frame->used == 0xffffffff);
MM_DBG("frame %d busy\n", audio->out_tail);
audplay_dsp_send_data_avail(audio, audio->out_tail,
frame->used);
frame->used = 0xffffffff;
audio->out_needed = 0;
}
}
done:
spin_unlock_irqrestore(&audio->dsp_lock, flags);
}
/* ------------------- device --------------------- */
static void audac3_flush(struct audio *audio)
{
unsigned long flags;
spin_lock_irqsave(&audio->dsp_lock, flags);
audio->out[0].used = 0;
audio->out[1].used = 0;
audio->out_head = 0;
audio->out_tail = 0;
audio->out_needed = 0;
spin_unlock_irqrestore(&audio->dsp_lock, flags);
atomic_set(&audio->out_bytes, 0);
}
static void audac3_flush_pcm_buf(struct audio *audio)
{
uint8_t index;
unsigned long flags;
spin_lock_irqsave(&audio->dsp_lock, flags);
for (index = 0; index < PCM_BUF_MAX_COUNT; index++)
audio->in[index].used = 0;
audio->buf_refresh = 0;
audio->read_next = 0;
audio->fill_next = 0;
spin_unlock_irqrestore(&audio->dsp_lock, flags);
}
/*check if func to be added to validate user data*/
static void audac3_ioport_reset(struct audio *audio)
{
/* Make sure read/write thread are free from
* sleep and knowing that system is not able
* to process io request at the moment
*/
wake_up(&audio->write_wait);
mutex_lock(&audio->write_lock);
audac3_flush(audio);
mutex_unlock(&audio->write_lock);
wake_up(&audio->read_wait);
mutex_lock(&audio->read_lock);
audac3_flush_pcm_buf(audio);
mutex_unlock(&audio->read_lock);
}
static int audac3_events_pending(struct audio *audio)
{
unsigned long flags;
int empty;
spin_lock_irqsave(&audio->event_queue_lock, flags);
empty = !list_empty(&audio->event_queue);
spin_unlock_irqrestore(&audio->event_queue_lock, flags);
return empty || audio->event_abort;
}
static void audac3_reset_event_queue(struct audio *audio)
{
unsigned long flags;
struct audac3_event *drv_evt;
struct list_head *ptr, *next;
spin_lock_irqsave(&audio->event_queue_lock, flags);
list_for_each_safe(ptr, next, &audio->event_queue) {
drv_evt = list_first_entry(&audio->event_queue,
struct audac3_event, list);
list_del(&drv_evt->list);
kfree(drv_evt);
}
list_for_each_safe(ptr, next, &audio->free_event_queue) {
drv_evt = list_first_entry(&audio->free_event_queue,
struct audac3_event, list);
list_del(&drv_evt->list);
kfree(drv_evt);
}
spin_unlock_irqrestore(&audio->event_queue_lock, flags);
return;
}
static long audac3_process_event_req(struct audio *audio, void __user *arg)
{
long rc;
struct msm_audio_event usr_evt;
struct audac3_event *drv_evt = NULL;
int timeout;
unsigned long flags;
if (copy_from_user(&usr_evt, arg, sizeof(struct msm_audio_event)))
return -EFAULT;
timeout = (int) usr_evt.timeout_ms;
if (timeout > 0) {
rc = wait_event_interruptible_timeout(
audio->event_wait, audac3_events_pending(audio),
msecs_to_jiffies(timeout));
if (rc == 0)
return -ETIMEDOUT;
} else {
rc = wait_event_interruptible(
audio->event_wait, audac3_events_pending(audio));
}
if (rc < 0)
return rc;
if (audio->event_abort) {
audio->event_abort = 0;
return -ENODEV;
}
rc = 0;
spin_lock_irqsave(&audio->event_queue_lock, flags);
if (!list_empty(&audio->event_queue)) {
drv_evt = list_first_entry(&audio->event_queue,
struct audac3_event, list);
list_del(&drv_evt->list);
}
if (drv_evt) {
usr_evt.event_type = drv_evt->event_type;
usr_evt.event_payload = drv_evt->payload;
list_add_tail(&drv_evt->list, &audio->free_event_queue);
} else
rc = -1;
spin_unlock_irqrestore(&audio->event_queue_lock, flags);
if (!rc && copy_to_user(arg, &usr_evt, sizeof(usr_evt)))
rc = -EFAULT;
return rc;
}
static int audio_enable_eq(struct audio *audio, int enable)
{
if (audio->eq_enable == enable && !audio->eq_needs_commit)
return 0;
audio->eq_enable = enable;
if (audio->running) {
audpp_dsp_set_eq(audio->dec_id, enable, &audio->eq);
audio->eq_needs_commit = 0;
}
return 0;
}
static long audac3_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
struct audio *audio = file->private_data;
int rc = -EINVAL;
unsigned long flags = 0;
uint16_t enable_mask;
int enable;
int prev_state;
unsigned long ionflag = 0;
ion_phys_addr_t addr = 0;
struct ion_handle *handle = NULL;
int len = 0;
MM_DBG("cmd = %d\n", cmd);
switch (cmd) {
case AUDIO_ENABLE_AUDPP:
if (copy_from_user(&enable_mask, (void *) arg,
sizeof(enable_mask))) {
rc = -EFAULT;
break;
}
spin_lock_irqsave(&audio->dsp_lock, flags);
enable = (enable_mask & EQ_ENABLE) ? 1 : 0;
audio_enable_eq(audio, enable);
spin_unlock_irqrestore(&audio->dsp_lock, flags);
rc = 0;
break;
case AUDIO_SET_VOLUME:
spin_lock_irqsave(&audio->dsp_lock, flags);
audio->vol_pan.volume = arg;
if (audio->running)
audpp_dsp_set_vol_pan(audio->dec_id, &audio->vol_pan);
spin_unlock_irqrestore(&audio->dsp_lock, flags);
rc = 0;
break;
case AUDIO_SET_PAN:
spin_lock_irqsave(&audio->dsp_lock, flags);
audio->vol_pan.pan = arg;
if (audio->running)
audpp_dsp_set_vol_pan(audio->dec_id, &audio->vol_pan);
spin_unlock_irqrestore(&audio->dsp_lock, flags);
rc = 0;
break;
case AUDIO_SET_EQ:
prev_state = audio->eq_enable;
audio->eq_enable = 0;
if (copy_from_user(&audio->eq.num_bands, (void *) arg,
sizeof(audio->eq) -
(AUDPP_CMD_CFG_OBJECT_PARAMS_COMMON_LEN + 2))) {
rc = -EFAULT;
break;
}
audio->eq_enable = prev_state;
audio->eq_needs_commit = 1;
rc = 0;
break;
}
if (-EINVAL != rc)
return rc;
if (cmd == AUDIO_GET_EVENT) {
MM_DBG("AUDIO_GET_EVENT\n");
if (mutex_trylock(&audio->get_event_lock)) {
rc = audac3_process_event_req(audio,
(void __user *) arg);
mutex_unlock(&audio->get_event_lock);
} else
rc = -EBUSY;
return rc;
}
if (cmd == AUDIO_ABORT_GET_EVENT) {
audio->event_abort = 1;
wake_up(&audio->event_wait);
return 0;
}
mutex_lock(&audio->lock);
switch (cmd) {
case AUDIO_START:
MM_DBG("AUDIO_START\n");
rc = audac3_enable(audio);
if (!rc) {
rc = wait_event_interruptible_timeout(audio->wait,
audio->dec_state != MSM_AUD_DECODER_STATE_NONE,
msecs_to_jiffies(MSM_AUD_DECODER_WAIT_MS));
MM_INFO("dec_state %d rc = %d\n", audio->dec_state, rc);
if (audio->dec_state != MSM_AUD_DECODER_STATE_SUCCESS) {
MM_ERR("In audio->dec_state !=\n");
rc = -ENODEV;
} else
rc = 0;
}
break;
case AUDIO_STOP:
MM_DBG("AUDIO_STOP\n");
rc = audac3_disable(audio);
audac3_ioport_reset(audio);
audio->stopped = 0;
break;
case AUDIO_FLUSH:
MM_DBG("AUDIO_FLUSH\n");
audio->rflush = 1;
audio->wflush = 1;
audac3_ioport_reset(audio);
if (audio->running) {
audpp_flush(audio->dec_id);
rc = wait_event_interruptible(audio->write_wait,
!audio->wflush);
if (rc < 0) {
MM_ERR("AUDIO_FLUSH interrupted\n");
rc = -EINTR;
}
} else {
audio->rflush = 0;
audio->wflush = 0;
}
break;
case AUDIO_SET_CONFIG:{
struct msm_audio_config config;
if (copy_from_user
(&config, (void *)arg, sizeof(config))) {
rc = -EFAULT;
break;
}
audio->mfield = config.meta_field;
rc = 0;
MM_DBG("AUDIO_SET_CONFIG applicable only"\
" for meta field configuration\n");
break;
}
case AUDIO_GET_CONFIG:{
struct msm_audio_config config;
config.buffer_size = BUFSZ;
config.buffer_count = 2;
config.sample_rate = (audio->ac3_config).fsCod;
config.channel_count = 2;
config.meta_field = 0;
config.unused[0] = 0;
config.unused[1] = 0;
config.unused[2] = 0;
if (copy_to_user((void *)arg, &config, sizeof(config)))
rc = -EFAULT;
else
rc = 0;
break;
}
case AUDIO_GET_AC3_CONFIG:{
if (copy_to_user((void *)arg, &audio->ac3_config,
sizeof(audio->ac3_config)))
rc = -EFAULT;
else
rc = 0;
break;
}
case AUDIO_SET_AC3_CONFIG:{
struct msm_audio_ac3_config usr_config;
if (copy_from_user
(&usr_config, (void *)arg,
sizeof(usr_config))) {
rc = -EFAULT;
break;
}
audio->ac3_config = usr_config;
rc = 0;
break;
}
case AUDIO_GET_PCM_CONFIG:{
struct msm_audio_pcm_config config;
config.pcm_feedback = audio->pcm_feedback;
config.buffer_count = PCM_BUF_MAX_COUNT;
config.buffer_size = PCM_BUFSZ;
if (copy_to_user((void *)arg, &config, sizeof(config)))
rc = -EFAULT;
else
rc = 0;
break;
}
case AUDIO_SET_PCM_CONFIG:{
struct msm_audio_pcm_config config;
if (copy_from_user
(&config, (void *)arg, sizeof(config))) {
rc = -EFAULT;
break;
}
if (config.pcm_feedback != audio->pcm_feedback) {
MM_ERR("Not sufficient permission to"\
" change the playback mode\n");
rc = -EACCES;
break;
}
if ((config.buffer_count > PCM_BUF_MAX_COUNT) ||
(config.buffer_count == 1))
config.buffer_count = PCM_BUF_MAX_COUNT;
if (config.buffer_size < PCM_BUFSZ)
config.buffer_size = PCM_BUFSZ;
/* Check if pcm feedback is required */
if ((config.pcm_feedback) && (!audio->read_data)) {
MM_DBG("allocate PCM buf %d\n",
config.buffer_count *
config.buffer_size);
handle = ion_alloc(audio->client,
(config.buffer_size *
config.buffer_count),
SZ_4K, ION_HEAP(ION_AUDIO_HEAP_ID), 0);
if (IS_ERR_OR_NULL(handle)) {
MM_ERR("Unable to alloc I/P buffs\n");
audio->input_buff_handle = NULL;
rc = -ENOMEM;
break;
}
audio->input_buff_handle = handle;
rc = ion_phys(audio->client ,
handle, &addr, &len);
if (rc) {
MM_ERR("Invalid phy: %x sz: %x\n",
(unsigned int) addr,
(unsigned int) len);
ion_free(audio->client, handle);
audio->input_buff_handle = NULL;
rc = -ENOMEM;
break;
} else {
MM_INFO("Got valid phy: %x sz: %x\n",
(unsigned int) audio->read_phys,
(unsigned int) len);
}
audio->read_phys = (int32_t)addr;
rc = ion_handle_get_flags(audio->client,
handle, &ionflag);
if (rc) {
MM_ERR("could not get flags\n");
ion_free(audio->client, handle);
audio->input_buff_handle = NULL;
rc = -ENOMEM;
break;
}
audio->map_v_read = ion_map_kernel(
audio->client, handle);
if (IS_ERR(audio->map_v_read)) {
MM_ERR("map of read buf failed\n");
ion_free(audio->client, handle);
audio->input_buff_handle = NULL;
rc = -ENOMEM;
} else {
uint8_t index;
uint32_t offset = 0;
audio->read_data =
audio->map_v_read;
audio->buf_refresh = 0;
audio->pcm_buf_count =
config.buffer_count;
audio->read_next = 0;
audio->fill_next = 0;
for (index = 0;
index < config.buffer_count;
index++) {
audio->in[index].data =
audio->read_data + offset;
audio->in[index].addr =
audio->read_phys + offset;
audio->in[index].size =
config.buffer_size;
audio->in[index].used = 0;
offset += config.buffer_size;
}
MM_DBG("read buf: phy addr"\
" 0x%08x kernel addr 0x%08x\n",
audio->read_phys,
(int)audio->read_data);
rc = 0;
}
} else {
rc = 0;
}
break;
}
case AUDIO_PAUSE:
MM_DBG("AUDIO_PAUSE %ld\n", arg);
rc = audpp_pause(audio->dec_id, (int) arg);
break;
default:
rc = -EINVAL;
}
mutex_unlock(&audio->lock);
return rc;
}
/* Only useful in tunnel-mode */
static int audac3_fsync(struct file *file, loff_t a, loff_t b, int datasync)
{
struct audio *audio = file->private_data;
int rc = 0;
MM_DBG("\n"); /* Macro prints the file name and function */
if (!audio->running || audio->pcm_feedback) {
rc = -EINVAL;
goto done_nolock;
}
mutex_lock(&audio->write_lock);
rc = wait_event_interruptible(audio->write_wait,
(!audio->out[0].used &&
!audio->out[1].used &&
audio->out_needed) || audio->wflush);
if (rc < 0)
goto done;
else if (audio->wflush) {
rc = -EBUSY;
goto done;
}
/* pcm dmamiss message is sent continously
* when decoder is starved so no race
* condition concern
*/
audio->teos = 0;
rc = wait_event_interruptible(audio->write_wait,
audio->teos || audio->wflush);
if (audio->wflush)
rc = -EBUSY;
done:
mutex_unlock(&audio->write_lock);
done_nolock:
return rc;
}
static ssize_t audac3_read(struct file *file, char __user *buf, size_t count,
loff_t *pos)
{
struct audio *audio = file->private_data;
const char __user *start = buf;
int rc = 0;
if (!audio->pcm_feedback) {
MM_ERR("returning from read as tunnel mode\n");
return 0;
/* PCM feedback is not enabled. Nothing to read */
}
mutex_lock(&audio->read_lock);
MM_DBG("\n"); /* Macro prints the file name and function */
while (count > 0) {
rc = wait_event_interruptible(audio->read_wait,
(audio->in[audio->read_next].used > 0) ||
(audio->stopped) || (audio->rflush));
MM_DBG("wait terminated count%d\n", count);
if (rc < 0)
break;
if (audio->stopped || audio->rflush) {
rc = -EBUSY;
break;
}
if (count < audio->in[audio->read_next].used) {
/* Read must happen in frame boundary. Since driver does
* not know frame size, read count must be greater or
* equal to size of PCM samples
*/
MM_DBG("read stop - partial frame\n");
break;
} else {
MM_DBG("read from in[%d]\n", audio->read_next);
/* order reads from the output buffer */
rmb();
if (copy_to_user
(buf, audio->in[audio->read_next].data,
audio->in[audio->read_next].used)) {
MM_ERR("invalid addr %x\n",
(unsigned int)buf);
rc = -EFAULT;
break;
}
count -= audio->in[audio->read_next].used;
buf += audio->in[audio->read_next].used;
audio->in[audio->read_next].used = 0;
if ((++audio->read_next) == audio->pcm_buf_count)
audio->read_next = 0;
break;
/* Force to exit while loop
* to prevent output thread
* sleep too long if data is
* not ready at this moment
*/
}
}
/* don't feed output buffer to HW decoder during flushing
* buffer refresh command will be sent once flush completes
* send buf refresh command here can confuse HW decoder
*/
if (audio->buf_refresh && !audio->rflush) {
audio->buf_refresh = 0;
MM_DBG("kick start pcm feedback again\n");
audac3_buffer_refresh(audio);
}
mutex_unlock(&audio->read_lock);
if (buf > start)
rc = buf - start;
MM_DBG("read %d bytes\n", rc);
return rc;
}
static int audac3_process_eos(struct audio *audio,
const char __user *buf_start, unsigned short mfield_size)
{
int rc = 0;
struct buffer *frame;
frame = audio->out + audio->out_head;
rc = wait_event_interruptible(audio->write_wait,
(audio->out_needed &&
audio->out[0].used == 0 &&
audio->out[1].used == 0)
|| (audio->stopped)
|| (audio->wflush));
if (rc < 0)
goto done;
if (audio->stopped || audio->wflush) {
rc = -EBUSY;
goto done;
}
if (copy_from_user(frame->data, buf_start, mfield_size)) {
rc = -EFAULT;
goto done;
}
frame->mfield_sz = mfield_size;
audio->out_head ^= 1;
frame->used = mfield_size;
audac3_send_data(audio, 0);
done:
return rc;
}
static ssize_t audac3_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
struct audio *audio = file->private_data;
const char __user *start = buf;
struct buffer *frame;
size_t xfer;
char *cpy_ptr;
unsigned short mfield_size = 0;
int rc = 0, eos_condition = AUDAC3_EOS_NONE;
MM_DBG("cnt=%d\n", count);
if (count & 1)
return -EINVAL;
mutex_lock(&audio->write_lock);
while (count > 0) {
frame = audio->out + audio->out_head;
cpy_ptr = frame->data;
rc = wait_event_interruptible(audio->write_wait,
(frame->used == 0)
|| (audio->stopped)
|| (audio->wflush));
if (rc < 0)
break;
if (audio->stopped || audio->wflush) {
rc = -EBUSY;
break;
}
if (audio->mfield) {
if (buf == start) {
/* Processing beginning of user buffer */
if (__get_user(mfield_size,
(unsigned short __user *) buf)) {
rc = -EFAULT;
break;
} else if (mfield_size > count) {
rc = -EINVAL;
break;
}
MM_DBG("mf offset_val %x\n", mfield_size);
if (copy_from_user(cpy_ptr, buf,
mfield_size)) {
rc = -EFAULT;
break;
}
/* Check if EOS flag is set and buffer has
* contains just meta field
*/
if (cpy_ptr[AUDAC3_EOS_FLG_OFFSET] &
AUDAC3_EOS_FLG_MASK) {
MM_DBG("eos set\n");
eos_condition = AUDAC3_EOS_SET;
if (mfield_size == count) {
buf += mfield_size;
break;
} else
cpy_ptr[AUDAC3_EOS_FLG_OFFSET] &=
~AUDAC3_EOS_FLG_MASK;
}
/* Check EOS to see if */
cpy_ptr += mfield_size;
count -= mfield_size;
buf += mfield_size;
} else {
mfield_size = 0;
MM_DBG("continuous buffer\n");
}
frame->mfield_sz = mfield_size;
}
xfer = (count > (frame->size - mfield_size)) ?
(frame->size - mfield_size) : count;
if (copy_from_user(cpy_ptr, buf, xfer)) {
rc = -EFAULT;
break;
}
frame->used = xfer + mfield_size;
audio->out_head ^= 1;
count -= xfer;
buf += xfer;
audac3_send_data(audio, 0);
}
if (eos_condition == AUDAC3_EOS_SET)
rc = audac3_process_eos(audio, start, mfield_size);
mutex_unlock(&audio->write_lock);
if (!rc) {
if (buf > start)
return buf - start;
}
return rc;
}
static int audac3_release(struct inode *inode, struct file *file)
{
struct audio *audio = file->private_data;
MM_INFO("audio instance 0x%08x freeing\n", (int)audio);
mutex_lock(&audio->lock);
audac3_disable(audio);
if (audio->rmt_resource_released == 0)
rmt_put_resource(audio);
audac3_flush(audio);
audac3_flush_pcm_buf(audio);
msm_adsp_put(audio->audplay);
audpp_adec_free(audio->dec_id);
#ifdef CONFIG_HAS_EARLYSUSPEND
unregister_early_suspend(&audio->suspend_ctl.node);
#endif
audio->event_abort = 1;
wake_up(&audio->event_wait);
audac3_reset_event_queue(audio);
ion_unmap_kernel(audio->client, audio->output_buff_handle);
ion_free(audio->client, audio->output_buff_handle);
if (audio->input_buff_handle != NULL) {
ion_unmap_kernel(audio->client, audio->input_buff_handle);
ion_free(audio->client, audio->input_buff_handle);
}
ion_client_destroy(audio->client);
mutex_unlock(&audio->lock);
#ifdef CONFIG_DEBUG_FS
if (audio->dentry)
debugfs_remove(audio->dentry);
#endif
kfree(audio);
return 0;
}
#ifdef CONFIG_HAS_EARLYSUSPEND
static void audac3_post_event(struct audio *audio, int type,
union msm_audio_event_payload payload)
{
struct audac3_event *e_node = NULL;
unsigned long flags;
spin_lock_irqsave(&audio->event_queue_lock, flags);
if (!list_empty(&audio->free_event_queue)) {
e_node = list_first_entry(&audio->free_event_queue,
struct audac3_event, list);
list_del(&e_node->list);
} else {
e_node = kmalloc(sizeof(struct audac3_event), GFP_ATOMIC);
if (!e_node) {
MM_ERR("No mem to post event %d\n", type);
spin_unlock_irqrestore(&audio->event_queue_lock, flags);
return;
}
}
e_node->event_type = type;
e_node->payload = payload;
list_add_tail(&e_node->list, &audio->event_queue);
spin_unlock_irqrestore(&audio->event_queue_lock, flags);
wake_up(&audio->event_wait);
}
static void audac3_suspend(struct early_suspend *h)
{
struct audac3_suspend_ctl *ctl =
container_of(h, struct audac3_suspend_ctl, node);
union msm_audio_event_payload payload;
MM_DBG("\n"); /* Macro prints the file name and function */
audac3_post_event(ctl->audio, AUDIO_EVENT_SUSPEND, payload);
}
static void audac3_resume(struct early_suspend *h)
{
struct audac3_suspend_ctl *ctl =
container_of(h, struct audac3_suspend_ctl, node);
union msm_audio_event_payload payload;
MM_DBG("\n"); /* Macro prints the file name and function */
audac3_post_event(ctl->audio, AUDIO_EVENT_RESUME, payload);
}
#endif
#ifdef CONFIG_DEBUG_FS
static ssize_t audac3_debug_open(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
return 0;
}
static ssize_t audac3_debug_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
const int debug_bufmax = 1024;
static char buffer[1024];
int n = 0, i;
struct audio *audio = file->private_data;
mutex_lock(&audio->lock);
n = scnprintf(buffer, debug_bufmax, "opened %d\n", audio->opened);
n += scnprintf(buffer + n, debug_bufmax - n,
"enabled %d\n", audio->enabled);
n += scnprintf(buffer + n, debug_bufmax - n,
"stopped %d\n", audio->stopped);
n += scnprintf(buffer + n, debug_bufmax - n,
"pcm_feedback %d\n", audio->pcm_feedback);
n += scnprintf(buffer + n, debug_bufmax - n,
"out_buf_sz %d\n", audio->out[0].size);
n += scnprintf(buffer + n, debug_bufmax - n,
"pcm_buf_count %d\n", audio->pcm_buf_count);
n += scnprintf(buffer + n, debug_bufmax - n,
"pcm_buf_sz %d\n", audio->in[0].size);
n += scnprintf(buffer + n, debug_bufmax - n,
"volume %x\n", audio->vol_pan.volume);
mutex_unlock(&audio->lock);
/* Following variables are only useful for debugging when
* when playback halts unexpectedly. Thus, no mutual exclusion
* enforced
*/
n += scnprintf(buffer + n, debug_bufmax - n,
"wflush %d\n", audio->wflush);
n += scnprintf(buffer + n, debug_bufmax - n,
"rflush %d\n", audio->rflush);
n += scnprintf(buffer + n, debug_bufmax - n,
"running %d\n", audio->running);
n += scnprintf(buffer + n, debug_bufmax - n,
"dec state %d\n", audio->dec_state);
n += scnprintf(buffer + n, debug_bufmax - n,
"out_needed %d\n", audio->out_needed);
n += scnprintf(buffer + n, debug_bufmax - n,
"out_head %d\n", audio->out_head);
n += scnprintf(buffer + n, debug_bufmax - n,
"out_tail %d\n", audio->out_tail);
n += scnprintf(buffer + n, debug_bufmax - n,
"out[0].used %d\n", audio->out[0].used);
n += scnprintf(buffer + n, debug_bufmax - n,
"out[1].used %d\n", audio->out[1].used);
n += scnprintf(buffer + n, debug_bufmax - n,
"buffer_refresh %d\n", audio->buf_refresh);
n += scnprintf(buffer + n, debug_bufmax - n,
"read_next %d\n", audio->read_next);
n += scnprintf(buffer + n, debug_bufmax - n,
"fill_next %d\n", audio->fill_next);
for (i = 0; i < audio->pcm_buf_count; i++)
n += scnprintf(buffer + n, debug_bufmax - n,
"in[%d].size %d\n", i, audio->in[i].used);
buffer[n] = 0;
return simple_read_from_buffer(buf, count, ppos, buffer, n);
}
static const struct file_operations audac3_debug_fops = {
.read = audac3_debug_read,
.open = audac3_debug_open,
};
#endif
static int audac3_open(struct inode *inode, struct file *file)
{
struct audio *audio = NULL;
int rc, dec_attrb, decid, i;
struct audac3_event *e_node = NULL;
int len = 0;
unsigned long ionflag = 0;
ion_phys_addr_t addr = 0;
struct ion_handle *handle = NULL;
struct ion_client *client = NULL;
#ifdef CONFIG_DEBUG_FS
/* 4 bytes represents decoder number, 1 byte for terminate string */
char name[sizeof "msm_ac3_" + 5];
#endif
/* Allocate audio instance, set to zero */
audio = kzalloc(sizeof(struct audio), GFP_KERNEL);
if (!audio) {
MM_ERR("no memory to allocate audio instance\n");
rc = -ENOMEM;
goto done;
}
MM_INFO("audio instance 0x%08x created\n", (int)audio);
/* Allocate the decoder */
dec_attrb = AUDDEC_DEC_AC3;
if ((file->f_mode & FMODE_WRITE) &&
(file->f_mode & FMODE_READ)) {
dec_attrb |= MSM_AUD_MODE_NONTUNNEL;
audio->pcm_feedback = NON_TUNNEL_MODE_PLAYBACK;
} else if ((file->f_mode & FMODE_WRITE) &&
!(file->f_mode & FMODE_READ)) {
dec_attrb |= MSM_AUD_MODE_TUNNEL;
audio->pcm_feedback = TUNNEL_MODE_PLAYBACK;
} else {
kfree(audio);
rc = -EACCES;
goto done;
}
decid = audpp_adec_alloc(dec_attrb, &audio->module_name,
&audio->queue_id);
if (decid < 0) {
MM_ERR("No free decoder available, freeing instance 0x%08x\n",
(int)audio);
rc = -ENODEV;
kfree(audio);
goto done;
}
audio->dec_id = decid & MSM_AUD_DECODER_MASK;
client = msm_ion_client_create(UINT_MAX, "Audio_AC3_client");
if (IS_ERR_OR_NULL(client)) {
MM_ERR("Unable to create ION client\n");
rc = -ENOMEM;
goto client_create_error;
}
audio->client = client;
handle = ion_alloc(client, DMASZ, SZ_4K,
ION_HEAP(ION_AUDIO_HEAP_ID), 0);
if (IS_ERR_OR_NULL(handle)) {
MM_ERR("Unable to create allocate O/P buffers\n");
rc = -ENOMEM;
goto output_buff_alloc_error;
}
audio->output_buff_handle = handle;
rc = ion_phys(client, handle, &addr, &len);
if (rc) {
MM_ERR("O/P buffers:Invalid phy: %x sz: %x\n",
(unsigned int) addr, (unsigned int) len);
goto output_buff_get_phys_error;
} else {
MM_INFO("O/P buffers:valid phy: %x sz: %x\n",
(unsigned int) addr, (unsigned int) len);
}
audio->phys = (int32_t)addr;
rc = ion_handle_get_flags(client, handle, &ionflag);
if (rc) {
MM_ERR("could not get flags for the handle\n");
goto output_buff_get_flags_error;
}
audio->map_v_write = ion_map_kernel(client, handle);
if (IS_ERR(audio->map_v_write)) {
MM_ERR("could not map write buffers,freeing instance 0x%08x\n",
(int)audio);
rc = -ENOMEM;
goto output_buff_map_error;
}
audio->data = audio->map_v_write;
MM_DBG("write buf: phy addr 0x%08x kernel addr 0x%08x\n",
audio->phys, (int)audio->data);
rc = msm_adsp_get(audio->module_name, &audio->audplay,
&audplay_adsp_ops_ac3, audio);
if (rc) {
MM_ERR("failed to get %s module, freeing instance 0x%08x\n",
audio->module_name, (int)audio);
if (audio->pcm_feedback == TUNNEL_MODE_PLAYBACK)
audmgr_close(&audio->audmgr);
goto err;
}
rc = rmt_get_resource(audio);
if (rc) {
MM_ERR("ADSP resources are not available for AC3 session"\
" 0x%08x on decoder: %d\n", (int)audio, audio->dec_id);
if (audio->pcm_feedback == TUNNEL_MODE_PLAYBACK)
audmgr_close(&audio->audmgr);
msm_adsp_put(audio->audplay);
goto err;
}
/* Initialize all locks of audio instance */
audio->input_buff_handle = NULL;
mutex_init(&audio->lock);
mutex_init(&audio->write_lock);
mutex_init(&audio->read_lock);
mutex_init(&audio->get_event_lock);
spin_lock_init(&audio->dsp_lock);
init_waitqueue_head(&audio->write_wait);
init_waitqueue_head(&audio->read_wait);
INIT_LIST_HEAD(&audio->free_event_queue);
INIT_LIST_HEAD(&audio->event_queue);
init_waitqueue_head(&audio->wait);
init_waitqueue_head(&audio->event_wait);
spin_lock_init(&audio->event_queue_lock);
audio->out[0].data = audio->data + 0;
audio->out[0].addr = audio->phys + 0;
audio->out[0].size = BUFSZ;
audio->out[1].data = audio->data + BUFSZ;
audio->out[1].addr = audio->phys + BUFSZ;
audio->out[1].size = BUFSZ;
audio->vol_pan.volume = 0x3FFF;
(audio->ac3_config).wordSize = AUDAC3_DEF_WORDSIZE;
(audio->ac3_config).user_downmix_flag = AUDAC3_DEF_USER_DOWNMIX_FLAG;
(audio->ac3_config).user_karaoke_flag = AUDAC3_DEF_USER_KARAOKE_FLAG;
(audio->ac3_config).error_concealment = AUDAC3_DEF_ERROR_CONCEALMENT;
(audio->ac3_config).max_rep_count = AUDAC3_DEF_MAX_REPEAT_COUNT;
audac3_flush(audio);
file->private_data = audio;
audio->opened = 1;
#ifdef CONFIG_DEBUG_FS
snprintf(name, sizeof name, "msm_ac3_%04x", audio->dec_id);
audio->dentry = debugfs_create_file(name, S_IFREG | S_IRUGO,
NULL, (void *) audio, &audac3_debug_fops);
if (IS_ERR(audio->dentry))
MM_DBG("debugfs_create_file failed\n");
#endif
#ifdef CONFIG_HAS_EARLYSUSPEND
audio->suspend_ctl.node.level = EARLY_SUSPEND_LEVEL_DISABLE_FB;
audio->suspend_ctl.node.resume = audac3_resume;
audio->suspend_ctl.node.suspend = audac3_suspend;
audio->suspend_ctl.audio = audio;
register_early_suspend(&audio->suspend_ctl.node);
#endif
for (i = 0; i < AUDAC3_EVENT_NUM; i++) {
e_node = kmalloc(sizeof(struct audac3_event), GFP_KERNEL);
if (e_node)
list_add_tail(&e_node->list, &audio->free_event_queue);
else {
MM_ERR("event pkt alloc failed\n");
break;
}
}
done:
return rc;
err:
ion_unmap_kernel(client, audio->output_buff_handle);
output_buff_map_error:
output_buff_get_flags_error:
output_buff_get_phys_error:
ion_free(client, audio->output_buff_handle);
output_buff_alloc_error:
ion_client_destroy(client);
client_create_error:
audpp_adec_free(audio->dec_id);
kfree(audio);
return rc;
}
static const struct file_operations audio_ac3_fops = {
.owner = THIS_MODULE,
.open = audac3_open,
.release = audac3_release,
.read = audac3_read,
.write = audac3_write,
.unlocked_ioctl = audac3_ioctl,
.fsync = audac3_fsync,
};
struct miscdevice audio_ac3_misc = {
.minor = MISC_DYNAMIC_MINOR,
.name = "msm_ac3",
.fops = &audio_ac3_fops,
};
static int __init audac3_init(void)
{
return misc_register(&audio_ac3_misc);
}
static void __exit audac3_exit(void)
{
misc_deregister(&audio_ac3_misc);
}
module_init(audac3_init);
module_exit(audac3_exit);
MODULE_DESCRIPTION("MSM AC3 driver");
MODULE_LICENSE("GPL v2");
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