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M7350/kernel/sound/soc/msm/msm-pcm-voip.c

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M7350v1_en_gpl
2024-09-09 08:52:07 +00:00
/* Copyright (c) 2011-2013, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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.
*/
#include <linux/init.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/time.h>
#include <linux/wait.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/dma-mapping.h>
#include <sound/core.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/pcm.h>
#include <sound/initval.h>
#include <sound/control.h>
#include <asm/dma.h>
#include "msm-pcm-q6.h"
#include "msm-pcm-routing.h"
#include "qdsp6/q6voice.h"
#define VOIP_MAX_Q_LEN 10
#define VOIP_MAX_VOC_PKT_SIZE 640
#define VOIP_MIN_VOC_PKT_SIZE 320
/* Length of the DSP frame info header added to the voc packet. */
#define DSP_FRAME_HDR_LEN 1
#define MODE_IS127 0x2
#define MODE_4GV_NB 0x3
#define MODE_4GV_WB 0x4
#define MODE_AMR 0x5
#define MODE_AMR_WB 0xD
#define MODE_PCM 0xC
#define MODE_G711 0xA
#define MODE_G711A 0xF
enum msm_audio_g711a_frame_type {
MVS_G711A_SPEECH_GOOD,
MVS_G711A_SID,
MVS_G711A_NO_DATA,
MVS_G711A_ERASURE
};
enum msm_audio_g711a_mode {
MVS_G711A_MODE_MULAW,
MVS_G711A_MODE_ALAW
};
enum msm_audio_g711_mode {
MVS_G711_MODE_MULAW,
MVS_G711_MODE_ALAW
};
enum format {
FORMAT_S16_LE = 2,
FORMAT_SPECIAL = 31,
};
enum amr_rate_type {
AMR_RATE_4750, /* AMR 4.75 kbps */
AMR_RATE_5150, /* AMR 5.15 kbps */
AMR_RATE_5900, /* AMR 5.90 kbps */
AMR_RATE_6700, /* AMR 6.70 kbps */
AMR_RATE_7400, /* AMR 7.40 kbps */
AMR_RATE_7950, /* AMR 7.95 kbps */
AMR_RATE_10200, /* AMR 10.20 kbps */
AMR_RATE_12200, /* AMR 12.20 kbps */
AMR_RATE_6600, /* AMR-WB 6.60 kbps */
AMR_RATE_8850, /* AMR-WB 8.85 kbps */
AMR_RATE_12650, /* AMR-WB 12.65 kbps */
AMR_RATE_14250, /* AMR-WB 14.25 kbps */
AMR_RATE_15850, /* AMR-WB 15.85 kbps */
AMR_RATE_18250, /* AMR-WB 18.25 kbps */
AMR_RATE_19850, /* AMR-WB 19.85 kbps */
AMR_RATE_23050, /* AMR-WB 23.05 kbps */
AMR_RATE_23850, /* AMR-WB 23.85 kbps */
AMR_RATE_UNDEF
};
enum voip_state {
VOIP_STOPPED,
VOIP_STARTED,
};
struct voip_frame {
union {
uint32_t frame_type;
uint32_t packet_rate;
} header;
uint32_t len;
uint8_t voc_pkt[VOIP_MAX_VOC_PKT_SIZE];
};
struct voip_buf_node {
struct list_head list;
struct voip_frame frame;
};
struct voip_drv_info {
enum voip_state state;
struct snd_pcm_substream *playback_substream;
struct snd_pcm_substream *capture_substream;
struct list_head in_queue;
struct list_head free_in_queue;
struct list_head out_queue;
struct list_head free_out_queue;
wait_queue_head_t out_wait;
wait_queue_head_t in_wait;
struct mutex lock;
spinlock_t dsp_lock;
spinlock_t dsp_ul_lock;
uint32_t mode;
uint32_t rate_type;
uint32_t rate;
uint32_t dtx_mode;
uint8_t capture_start;
uint8_t playback_start;
uint8_t playback_instance;
uint8_t capture_instance;
unsigned int play_samp_rate;
unsigned int cap_samp_rate;
unsigned int pcm_size;
unsigned int pcm_count;
unsigned int pcm_playback_irq_pos; /* IRQ position */
unsigned int pcm_playback_buf_pos; /* position in buffer */
unsigned int pcm_capture_size;
unsigned int pcm_capture_count;
unsigned int pcm_capture_irq_pos; /* IRQ position */
unsigned int pcm_capture_buf_pos; /* position in buffer */
};
static int voip_get_media_type(uint32_t mode, uint32_t rate_type,
unsigned int samp_rate,
uint32_t *media_type);
static int voip_get_rate_type(uint32_t mode,
uint32_t rate,
uint32_t *rate_type);
static int msm_voip_mode_rate_config_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
static int msm_voip_mode_rate_config_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
static struct voip_drv_info voip_info;
static struct snd_pcm_hardware msm_pcm_hardware = {
.info = (SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_INTERLEAVED),
.formats = SNDRV_PCM_FMTBIT_S16_LE |
SNDRV_PCM_FMTBIT_SPECIAL,
.rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000,
.rate_min = 8000,
.rate_max = 16000,
.channels_min = 1,
.channels_max = 1,
.buffer_bytes_max = sizeof(struct voip_buf_node) * VOIP_MAX_Q_LEN,
.period_bytes_min = VOIP_MIN_VOC_PKT_SIZE,
.period_bytes_max = VOIP_MAX_VOC_PKT_SIZE,
.periods_min = VOIP_MAX_Q_LEN,
.periods_max = VOIP_MAX_Q_LEN,
.fifo_size = 0,
};
static int msm_voip_mute_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
int mute = ucontrol->value.integer.value[0];
pr_debug("%s: mute=%d\n", __func__, mute);
voc_set_tx_mute(voc_get_session_id(VOIP_SESSION_NAME), TX_PATH, mute);
return 0;
}
static int msm_voip_mute_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.integer.value[0] = 0;
return 0;
}
static int msm_voip_volume_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
int volume = ucontrol->value.integer.value[0];
pr_debug("%s: volume: %d\n", __func__, volume);
voc_set_rx_vol_index(voc_get_session_id(VOIP_SESSION_NAME),
RX_PATH,
volume);
return 0;
}
static int msm_voip_volume_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.integer.value[0] = 0;
return 0;
}
static int msm_voip_dtx_mode_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
mutex_lock(&voip_info.lock);
voip_info.dtx_mode = ucontrol->value.integer.value[0];
pr_debug("%s: dtx: %d\n", __func__, voip_info.dtx_mode);
mutex_unlock(&voip_info.lock);
return 0;
}
static int msm_voip_dtx_mode_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
mutex_lock(&voip_info.lock);
ucontrol->value.integer.value[0] = voip_info.dtx_mode;
mutex_unlock(&voip_info.lock);
return 0;
}
static struct snd_kcontrol_new msm_voip_controls[] = {
SOC_SINGLE_EXT("Voip Tx Mute", SND_SOC_NOPM, 0, 1, 0,
msm_voip_mute_get, msm_voip_mute_put),
SOC_SINGLE_EXT("Voip Rx Volume", SND_SOC_NOPM, 0, 5, 0,
msm_voip_volume_get, msm_voip_volume_put),
SOC_SINGLE_MULTI_EXT("Voip Mode Rate Config", SND_SOC_NOPM, 0, 23850,
0, 2, msm_voip_mode_rate_config_get,
msm_voip_mode_rate_config_put),
SOC_SINGLE_EXT("Voip Dtx Mode", SND_SOC_NOPM, 0, 1, 0,
msm_voip_dtx_mode_get, msm_voip_dtx_mode_put),
};
static int msm_pcm_voip_probe(struct snd_soc_platform *platform)
{
snd_soc_add_platform_controls(platform, msm_voip_controls,
ARRAY_SIZE(msm_voip_controls));
return 0;
}
/* sample rate supported */
static unsigned int supported_sample_rates[] = {8000, 16000};
/* capture path */
static void voip_process_ul_pkt(uint8_t *voc_pkt,
uint32_t pkt_len,
void *private_data)
{
struct voip_buf_node *buf_node = NULL;
struct voip_drv_info *prtd = private_data;
unsigned long dsp_flags;
if (prtd->capture_substream == NULL)
return;
/* Copy up-link packet into out_queue. */
spin_lock_irqsave(&prtd->dsp_ul_lock, dsp_flags);
/* discarding UL packets till start is received */
if (!list_empty(&prtd->free_out_queue) && prtd->capture_start) {
buf_node = list_first_entry(&prtd->free_out_queue,
struct voip_buf_node, list);
list_del(&buf_node->list);
switch (prtd->mode) {
case MODE_AMR_WB:
case MODE_AMR: {
/* Remove the DSP frame info header. Header format:
* Bits 0-3: Frame rate
* Bits 4-7: Frame type
*/
buf_node->frame.header.frame_type =
((*voc_pkt) & 0xF0) >> 4;
voc_pkt = voc_pkt + DSP_FRAME_HDR_LEN;
buf_node->frame.len = pkt_len - DSP_FRAME_HDR_LEN;
memcpy(&buf_node->frame.voc_pkt[0],
voc_pkt,
buf_node->frame.len);
list_add_tail(&buf_node->list, &prtd->out_queue);
break;
}
case MODE_IS127:
case MODE_4GV_NB:
case MODE_4GV_WB: {
/* Remove the DSP frame info header.
* Header format:
* Bits 0-3: frame rate
*/
buf_node->frame.header.packet_rate = (*voc_pkt) & 0x0F;
voc_pkt = voc_pkt + DSP_FRAME_HDR_LEN;
buf_node->frame.len = pkt_len - DSP_FRAME_HDR_LEN;
memcpy(&buf_node->frame.voc_pkt[0],
voc_pkt,
buf_node->frame.len);
list_add_tail(&buf_node->list, &prtd->out_queue);
break;
}
case MODE_G711:
case MODE_G711A:{
/* G711 frames are 10ms each, but the DSP works with
* 20ms frames and sends two 10ms frames per buffer.
* Extract the two frames and put them in separate
* buffers.
*/
/* Remove the first DSP frame info header.
* Header format: G711A
* Bits 0-1: Frame type
* Bits 2-3: Frame rate
*
* Header format: G711
* Bits 2-3: Frame rate
*/
if (prtd->mode == MODE_G711A)
buf_node->frame.header.frame_type =
(*voc_pkt) & 0x03;
voc_pkt = voc_pkt + DSP_FRAME_HDR_LEN;
/* There are two frames in the buffer. Length of the
* first frame:
*/
buf_node->frame.len = (pkt_len -
2 * DSP_FRAME_HDR_LEN) / 2;
memcpy(&buf_node->frame.voc_pkt[0],
voc_pkt,
buf_node->frame.len);
voc_pkt = voc_pkt + buf_node->frame.len;
list_add_tail(&buf_node->list, &prtd->out_queue);
/* Get another buffer from the free Q and fill in the
* second frame.
*/
if (!list_empty(&prtd->free_out_queue)) {
buf_node =
list_first_entry(&prtd->free_out_queue,
struct voip_buf_node,
list);
list_del(&buf_node->list);
/* Remove the second DSP frame info header.
* Header format:
* Bits 0-1: Frame type
* Bits 2-3: Frame rate
*/
if (prtd->mode == MODE_G711A)
buf_node->frame.header.frame_type =
(*voc_pkt) & 0x03;
voc_pkt = voc_pkt + DSP_FRAME_HDR_LEN;
/* There are two frames in the buffer. Length
* of the second frame:
*/
buf_node->frame.len = (pkt_len -
2 * DSP_FRAME_HDR_LEN) / 2;
memcpy(&buf_node->frame.voc_pkt[0],
voc_pkt,
buf_node->frame.len);
list_add_tail(&buf_node->list,
&prtd->out_queue);
} else {
/* Drop the second frame */
pr_err("%s: UL data dropped, read is slow\n",
__func__);
}
break;
}
default: {
buf_node->frame.len = pkt_len;
memcpy(&buf_node->frame.voc_pkt[0],
voc_pkt,
buf_node->frame.len);
list_add_tail(&buf_node->list, &prtd->out_queue);
}
}
pr_debug("ul_pkt: pkt_len =%d, frame.len=%d\n", pkt_len,
buf_node->frame.len);
prtd->pcm_capture_irq_pos += prtd->pcm_capture_count;
spin_unlock_irqrestore(&prtd->dsp_ul_lock, dsp_flags);
snd_pcm_period_elapsed(prtd->capture_substream);
} else {
spin_unlock_irqrestore(&prtd->dsp_ul_lock, dsp_flags);
pr_err("UL data dropped\n");
}
wake_up(&prtd->out_wait);
}
/* playback path */
static void voip_process_dl_pkt(uint8_t *voc_pkt,
uint32_t *pkt_len,
void *private_data)
{
struct voip_buf_node *buf_node = NULL;
struct voip_drv_info *prtd = private_data;
unsigned long dsp_flags;
if (prtd->playback_substream == NULL)
return;
spin_lock_irqsave(&prtd->dsp_lock, dsp_flags);
if (!list_empty(&prtd->in_queue) && prtd->playback_start) {
buf_node = list_first_entry(&prtd->in_queue,
struct voip_buf_node, list);
list_del(&buf_node->list);
switch (prtd->mode) {
case MODE_AMR:
case MODE_AMR_WB: {
/* Add the DSP frame info header. Header format:
* Bits 0-3: Frame rate
* Bits 4-7: Frame type
*/
*voc_pkt = ((buf_node->frame.header.frame_type &
0x0F) << 4) | (prtd->rate_type & 0x0F);
voc_pkt = voc_pkt + DSP_FRAME_HDR_LEN;
*pkt_len = buf_node->frame.len + DSP_FRAME_HDR_LEN;
memcpy(voc_pkt,
&buf_node->frame.voc_pkt[0],
buf_node->frame.len);
list_add_tail(&buf_node->list, &prtd->free_in_queue);
break;
}
case MODE_IS127:
case MODE_4GV_NB:
case MODE_4GV_WB: {
/* Add the DSP frame info header. Header format:
* Bits 0-3 : Frame rate
*/
*voc_pkt = buf_node->frame.header.packet_rate & 0x0F;
voc_pkt = voc_pkt + DSP_FRAME_HDR_LEN;
*pkt_len = buf_node->frame.len + DSP_FRAME_HDR_LEN;
memcpy(voc_pkt,
&buf_node->frame.voc_pkt[0],
buf_node->frame.len);
list_add_tail(&buf_node->list, &prtd->free_in_queue);
break;
}
case MODE_G711:
case MODE_G711A:{
/* G711 frames are 10ms each but the DSP expects 20ms
* worth of data, so send two 10ms frames per buffer.
*/
/* Add the first DSP frame info header. Header format:
* Bits 0-1: Frame type
* Bits 2-3: Frame rate
*/
*voc_pkt = ((prtd->rate_type & 0x0F) << 2) |
(buf_node->frame.header.frame_type & 0x03);
voc_pkt = voc_pkt + DSP_FRAME_HDR_LEN;
*pkt_len = buf_node->frame.len + DSP_FRAME_HDR_LEN;
memcpy(voc_pkt,
&buf_node->frame.voc_pkt[0],
buf_node->frame.len);
voc_pkt = voc_pkt + buf_node->frame.len;
list_add_tail(&buf_node->list, &prtd->free_in_queue);
if (!list_empty(&prtd->in_queue)) {
/* Get the second buffer. */
buf_node = list_first_entry(&prtd->in_queue,
struct voip_buf_node,
list);
list_del(&buf_node->list);
/* Add the second DSP frame info header.
* Header format:
* Bits 0-1: Frame type
* Bits 2-3: Frame rate
*/
*voc_pkt = ((prtd->rate_type & 0x0F) << 2) |
(buf_node->frame.header.frame_type & 0x03);
voc_pkt = voc_pkt + DSP_FRAME_HDR_LEN;
*pkt_len = *pkt_len +
buf_node->frame.len + DSP_FRAME_HDR_LEN;
memcpy(voc_pkt,
&buf_node->frame.voc_pkt[0],
buf_node->frame.len);
list_add_tail(&buf_node->list,
&prtd->free_in_queue);
} else {
/* Only 10ms worth of data is available, signal
* erasure frame.
*/
*voc_pkt = ((prtd->rate_type & 0x0F) << 2) |
(MVS_G711A_ERASURE & 0x03);
*pkt_len = *pkt_len + DSP_FRAME_HDR_LEN;
pr_debug("%s, Only 10ms read, erase 2nd frame\n",
__func__);
}
break;
}
default: {
*pkt_len = buf_node->frame.len;
memcpy(voc_pkt,
&buf_node->frame.voc_pkt[0],
buf_node->frame.len);
list_add_tail(&buf_node->list, &prtd->free_in_queue);
}
}
pr_debug("dl_pkt: pkt_len=%d, frame_len=%d\n", *pkt_len,
buf_node->frame.len);
prtd->pcm_playback_irq_pos += prtd->pcm_count;
spin_unlock_irqrestore(&prtd->dsp_lock, dsp_flags);
snd_pcm_period_elapsed(prtd->playback_substream);
} else {
*pkt_len = 0;
spin_unlock_irqrestore(&prtd->dsp_lock, dsp_flags);
pr_err("DL data not available\n");
}
wake_up(&prtd->in_wait);
}
static struct snd_pcm_hw_constraint_list constraints_sample_rates = {
.count = ARRAY_SIZE(supported_sample_rates),
.list = supported_sample_rates,
.mask = 0,
};
static int msm_pcm_playback_prepare(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct voip_drv_info *prtd = runtime->private_data;
prtd->play_samp_rate = runtime->rate;
prtd->pcm_size = snd_pcm_lib_buffer_bytes(substream);
prtd->pcm_count = snd_pcm_lib_period_bytes(substream);
prtd->pcm_playback_irq_pos = 0;
prtd->pcm_playback_buf_pos = 0;
return 0;
}
static int msm_pcm_capture_prepare(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct voip_drv_info *prtd = runtime->private_data;
int ret = 0;
prtd->cap_samp_rate = runtime->rate;
prtd->pcm_capture_size = snd_pcm_lib_buffer_bytes(substream);
prtd->pcm_capture_count = snd_pcm_lib_period_bytes(substream);
prtd->pcm_capture_irq_pos = 0;
prtd->pcm_capture_buf_pos = 0;
return ret;
}
static int msm_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
int ret = 0;
struct snd_pcm_runtime *runtime = substream->runtime;
struct voip_drv_info *prtd = runtime->private_data;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
pr_debug("%s: Trigger start\n", __func__);
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
prtd->capture_start = 1;
else
prtd->playback_start = 1;
break;
case SNDRV_PCM_TRIGGER_STOP:
pr_debug("SNDRV_PCM_TRIGGER_STOP\n");
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
prtd->playback_start = 0;
else
prtd->capture_start = 0;
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static int msm_pcm_open(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct voip_drv_info *prtd = &voip_info;
int ret = 0;
pr_debug("%s, VoIP\n", __func__);
mutex_lock(&prtd->lock);
runtime->hw = msm_pcm_hardware;
ret = snd_pcm_hw_constraint_list(runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
&constraints_sample_rates);
if (ret < 0)
pr_debug("snd_pcm_hw_constraint_list failed\n");
ret = snd_pcm_hw_constraint_integer(runtime,
SNDRV_PCM_HW_PARAM_PERIODS);
if (ret < 0) {
pr_debug("snd_pcm_hw_constraint_integer failed\n");
goto err;
}
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
prtd->playback_substream = substream;
prtd->playback_instance++;
} else {
prtd->capture_substream = substream;
prtd->capture_instance++;
}
runtime->private_data = prtd;
err:
mutex_unlock(&prtd->lock);
return ret;
}
static int msm_pcm_playback_copy(struct snd_pcm_substream *substream, int a,
snd_pcm_uframes_t hwoff, void __user *buf, snd_pcm_uframes_t frames)
{
int ret = 0;
struct voip_buf_node *buf_node = NULL;
struct snd_pcm_runtime *runtime = substream->runtime;
struct voip_drv_info *prtd = runtime->private_data;
unsigned long dsp_flags;
int count = frames_to_bytes(runtime, frames);
pr_debug("%s: count = %d, frames=%d\n", __func__, count, (int)frames);
ret = wait_event_interruptible_timeout(prtd->in_wait,
(!list_empty(&prtd->free_in_queue) ||
prtd->state == VOIP_STOPPED),
1 * HZ);
if (ret > 0) {
if (count <= VOIP_MAX_VOC_PKT_SIZE) {
spin_lock_irqsave(&prtd->dsp_lock, dsp_flags);
buf_node =
list_first_entry(&prtd->free_in_queue,
struct voip_buf_node, list);
list_del(&buf_node->list);
spin_unlock_irqrestore(&prtd->dsp_lock, dsp_flags);
if (prtd->mode == MODE_PCM) {
ret = copy_from_user(&buf_node->frame.voc_pkt,
buf, count);
buf_node->frame.len = count;
} else
ret = copy_from_user(&buf_node->frame,
buf, count);
spin_lock_irqsave(&prtd->dsp_lock, dsp_flags);
list_add_tail(&buf_node->list, &prtd->in_queue);
spin_unlock_irqrestore(&prtd->dsp_lock, dsp_flags);
} else {
pr_err("%s: Write cnt %d is > VOIP_MAX_VOC_PKT_SIZE\n",
__func__, count);
ret = -ENOMEM;
}
} else if (ret == 0) {
pr_err("%s: No free DL buffs\n", __func__);
ret = -ETIMEDOUT;
} else {
pr_err("%s: playback copy was interrupted\n", __func__);
}
return ret;
}
static int msm_pcm_capture_copy(struct snd_pcm_substream *substream,
int channel, snd_pcm_uframes_t hwoff, void __user *buf,
snd_pcm_uframes_t frames)
{
int ret = 0;
int count = 0;
struct voip_buf_node *buf_node = NULL;
struct snd_pcm_runtime *runtime = substream->runtime;
struct voip_drv_info *prtd = runtime->private_data;
unsigned long dsp_flags;
count = frames_to_bytes(runtime, frames);
pr_debug("%s: count = %d\n", __func__, count);
ret = wait_event_interruptible_timeout(prtd->out_wait,
(!list_empty(&prtd->out_queue) ||
prtd->state == VOIP_STOPPED),
1 * HZ);
if (ret > 0) {
if (count <= VOIP_MAX_VOC_PKT_SIZE) {
spin_lock_irqsave(&prtd->dsp_ul_lock, dsp_flags);
buf_node = list_first_entry(&prtd->out_queue,
struct voip_buf_node, list);
list_del(&buf_node->list);
spin_unlock_irqrestore(&prtd->dsp_ul_lock, dsp_flags);
if (prtd->mode == MODE_PCM)
ret = copy_to_user(buf,
&buf_node->frame.voc_pkt,
count);
else
ret = copy_to_user(buf,
&buf_node->frame,
count);
if (ret) {
pr_err("%s: Copy to user retuned %d\n",
__func__, ret);
ret = -EFAULT;
}
spin_lock_irqsave(&prtd->dsp_ul_lock, dsp_flags);
list_add_tail(&buf_node->list,
&prtd->free_out_queue);
spin_unlock_irqrestore(&prtd->dsp_ul_lock, dsp_flags);
} else {
pr_err("%s: Read count %d > VOIP_MAX_VOC_PKT_SIZE\n",
__func__, count);
ret = -ENOMEM;
}
} else if (ret == 0) {
pr_err("%s: No UL data available\n", __func__);
ret = -ETIMEDOUT;
} else {
pr_err("%s: Read was interrupted\n", __func__);
ret = -ERESTARTSYS;
}
return ret;
}
static int msm_pcm_copy(struct snd_pcm_substream *substream, int a,
snd_pcm_uframes_t hwoff, void __user *buf, snd_pcm_uframes_t frames)
{
int ret = 0;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
ret = msm_pcm_playback_copy(substream, a, hwoff, buf, frames);
else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
ret = msm_pcm_capture_copy(substream, a, hwoff, buf, frames);
return ret;
}
static int msm_pcm_close(struct snd_pcm_substream *substream)
{
int ret = 0;
struct list_head *ptr = NULL;
struct list_head *next = NULL;
struct voip_buf_node *buf_node = NULL;
struct snd_dma_buffer *p_dma_buf, *c_dma_buf;
struct snd_pcm_substream *p_substream, *c_substream;
struct snd_pcm_runtime *runtime;
struct voip_drv_info *prtd;
unsigned long dsp_flags;
if (substream == NULL) {
pr_err("substream is NULL\n");
return -EINVAL;
}
runtime = substream->runtime;
prtd = runtime->private_data;
wake_up(&prtd->out_wait);
mutex_lock(&prtd->lock);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
prtd->playback_instance--;
else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
prtd->capture_instance--;
if (!prtd->playback_instance && !prtd->capture_instance) {
if (prtd->state == VOIP_STARTED) {
prtd->state = VOIP_STOPPED;
voc_end_voice_call(
voc_get_session_id(VOIP_SESSION_NAME));
voc_register_mvs_cb(NULL, NULL, prtd);
}
/* release all buffer */
/* release in_queue and free_in_queue */
pr_debug("release all buffer\n");
p_substream = prtd->playback_substream;
if (p_substream == NULL) {
pr_debug("p_substream is NULL\n");
goto capt;
}
p_dma_buf = &p_substream->dma_buffer;
if (p_dma_buf == NULL) {
pr_debug("p_dma_buf is NULL\n");
goto capt;
}
if (p_dma_buf->area != NULL) {
spin_lock_irqsave(&prtd->dsp_lock, dsp_flags);
list_for_each_safe(ptr, next, &prtd->in_queue) {
buf_node = list_entry(ptr,
struct voip_buf_node, list);
list_del(&buf_node->list);
}
list_for_each_safe(ptr, next, &prtd->free_in_queue) {
buf_node = list_entry(ptr,
struct voip_buf_node, list);
list_del(&buf_node->list);
}
spin_unlock_irqrestore(&prtd->dsp_lock, dsp_flags);
dma_free_coherent(p_substream->pcm->card->dev,
runtime->hw.buffer_bytes_max, p_dma_buf->area,
p_dma_buf->addr);
p_dma_buf->area = NULL;
}
/* release out_queue and free_out_queue */
capt: c_substream = prtd->capture_substream;
if (c_substream == NULL) {
pr_debug("c_substream is NULL\n");
goto done;
}
c_dma_buf = &c_substream->dma_buffer;
if (c_substream == NULL) {
pr_debug("c_dma_buf is NULL.\n");
goto done;
}
if (c_dma_buf->area != NULL) {
spin_lock_irqsave(&prtd->dsp_ul_lock, dsp_flags);
list_for_each_safe(ptr, next, &prtd->out_queue) {
buf_node = list_entry(ptr,
struct voip_buf_node, list);
list_del(&buf_node->list);
}
list_for_each_safe(ptr, next, &prtd->free_out_queue) {
buf_node = list_entry(ptr,
struct voip_buf_node, list);
list_del(&buf_node->list);
}
spin_unlock_irqrestore(&prtd->dsp_ul_lock, dsp_flags);
dma_free_coherent(c_substream->pcm->card->dev,
runtime->hw.buffer_bytes_max, c_dma_buf->area,
c_dma_buf->addr);
c_dma_buf->area = NULL;
}
done:
prtd->capture_substream = NULL;
prtd->playback_substream = NULL;
}
mutex_unlock(&prtd->lock);
return ret;
}
static int msm_pcm_prepare(struct snd_pcm_substream *substream)
{
int ret = 0;
struct snd_pcm_runtime *runtime = substream->runtime;
struct voip_drv_info *prtd = runtime->private_data;
uint32_t media_type = 0;
uint32_t rate_type = 0;
mutex_lock(&prtd->lock);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
ret = msm_pcm_playback_prepare(substream);
else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
ret = msm_pcm_capture_prepare(substream);
if ((runtime->format != FORMAT_SPECIAL) &&
((prtd->mode == MODE_AMR) || (prtd->mode == MODE_AMR_WB) ||
(prtd->mode == MODE_IS127) || (prtd->mode == MODE_4GV_NB) ||
(prtd->mode == MODE_4GV_WB) || (prtd->mode == MODE_G711) ||
(prtd->mode == MODE_G711A))) {
pr_err("mode:%d and format:%u are not mached\n",
prtd->mode, (uint32_t)runtime->format);
ret = -EINVAL;
goto done;
}
if ((runtime->format != FORMAT_S16_LE) &&
(prtd->mode == MODE_PCM)) {
pr_err("mode:%d and format:%u are not mached\n",
prtd->mode, (uint32_t)runtime->format);
ret = -EINVAL;
goto done;
}
if (prtd->playback_instance && prtd->capture_instance
&& (prtd->state != VOIP_STARTED)) {
ret = voip_get_rate_type(prtd->mode,
prtd->rate,
&rate_type);
if (ret < 0) {
pr_err("fail at getting rate_type\n");
ret = -EINVAL;
goto done;
}
prtd->rate_type = rate_type;
ret = voip_get_media_type(prtd->mode,
prtd->rate_type,
prtd->play_samp_rate,
&media_type);
if (ret < 0) {
pr_err("fail at getting media_type\n");
goto done;
}
pr_debug(" media_type=%d, rate_type=%d\n", media_type,
rate_type);
if ((prtd->play_samp_rate == 8000) &&
(prtd->cap_samp_rate == 8000))
voc_config_vocoder(media_type, rate_type,
VSS_NETWORK_ID_VOIP_NB,
voip_info.dtx_mode);
else if ((prtd->play_samp_rate == 16000) &&
(prtd->cap_samp_rate == 16000))
voc_config_vocoder(media_type, rate_type,
VSS_NETWORK_ID_VOIP_WB,
voip_info.dtx_mode);
else {
pr_debug("%s: Invalid rate playback %d, capture %d\n",
__func__, prtd->play_samp_rate,
prtd->cap_samp_rate);
goto done;
}
voc_register_mvs_cb(voip_process_ul_pkt,
voip_process_dl_pkt, prtd);
voc_start_voice_call(voc_get_session_id(VOIP_SESSION_NAME));
prtd->state = VOIP_STARTED;
}
done:
mutex_unlock(&prtd->lock);
return ret;
}
static snd_pcm_uframes_t
msm_pcm_playback_pointer(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct voip_drv_info *prtd = runtime->private_data;
pr_debug("%s\n", __func__);
if (prtd->pcm_playback_irq_pos >= prtd->pcm_size)
prtd->pcm_playback_irq_pos = 0;
return bytes_to_frames(runtime, (prtd->pcm_playback_irq_pos));
}
static snd_pcm_uframes_t
msm_pcm_capture_pointer(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct voip_drv_info *prtd = runtime->private_data;
if (prtd->pcm_capture_irq_pos >= prtd->pcm_capture_size)
prtd->pcm_capture_irq_pos = 0;
return bytes_to_frames(runtime, (prtd->pcm_capture_irq_pos));
}
static snd_pcm_uframes_t msm_pcm_pointer(struct snd_pcm_substream *substream)
{
snd_pcm_uframes_t ret = 0;
pr_debug("%s\n", __func__);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
ret = msm_pcm_playback_pointer(substream);
else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
ret = msm_pcm_capture_pointer(substream);
return ret;
}
static int msm_pcm_mmap(struct snd_pcm_substream *substream,
struct vm_area_struct *vma)
{
struct snd_pcm_runtime *runtime = substream->runtime;
pr_debug("%s\n", __func__);
dma_mmap_coherent(substream->pcm->card->dev, vma,
runtime->dma_area,
runtime->dma_addr,
runtime->dma_bytes);
return 0;
}
static int msm_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_dma_buffer *dma_buf = &substream->dma_buffer;
struct voip_buf_node *buf_node = NULL;
int i = 0, offset = 0;
pr_debug("%s: voip\n", __func__);
mutex_lock(&voip_info.lock);
dma_buf->dev.type = SNDRV_DMA_TYPE_DEV;
dma_buf->dev.dev = substream->pcm->card->dev;
dma_buf->private_data = NULL;
dma_buf->area = dma_alloc_coherent(substream->pcm->card->dev,
runtime->hw.buffer_bytes_max,
&dma_buf->addr, GFP_KERNEL);
if (!dma_buf->area) {
pr_err("%s:MSM VOIP dma_alloc failed\n", __func__);
return -ENOMEM;
}
dma_buf->bytes = runtime->hw.buffer_bytes_max;
memset(dma_buf->area, 0, runtime->hw.buffer_bytes_max);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
for (i = 0; i < VOIP_MAX_Q_LEN; i++) {
buf_node = (void *)dma_buf->area + offset;
list_add_tail(&buf_node->list,
&voip_info.free_in_queue);
offset = offset + sizeof(struct voip_buf_node);
}
} else {
for (i = 0; i < VOIP_MAX_Q_LEN; i++) {
buf_node = (void *) dma_buf->area + offset;
list_add_tail(&buf_node->list,
&voip_info.free_out_queue);
offset = offset + sizeof(struct voip_buf_node);
}
}
mutex_unlock(&voip_info.lock);
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
return 0;
}
static int msm_voip_mode_rate_config_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
mutex_lock(&voip_info.lock);
ucontrol->value.integer.value[0] = voip_info.mode;
ucontrol->value.integer.value[1] = voip_info.rate;
mutex_unlock(&voip_info.lock);
return 0;
}
static int msm_voip_mode_rate_config_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
mutex_lock(&voip_info.lock);
voip_info.mode = ucontrol->value.integer.value[0];
voip_info.rate = ucontrol->value.integer.value[1];
pr_debug("%s: mode=%d,rate=%d\n", __func__, voip_info.mode,
voip_info.rate);
mutex_unlock(&voip_info.lock);
return 0;
}
static int voip_get_rate_type(uint32_t mode, uint32_t rate,
uint32_t *rate_type)
{
int ret = 0;
switch (mode) {
case MODE_AMR: {
switch (rate) {
case 4750:
*rate_type = AMR_RATE_4750;
break;
case 5150:
*rate_type = AMR_RATE_5150;
break;
case 5900:
*rate_type = AMR_RATE_5900;
break;
case 6700:
*rate_type = AMR_RATE_6700;
break;
case 7400:
*rate_type = AMR_RATE_7400;
break;
case 7950:
*rate_type = AMR_RATE_7950;
break;
case 10200:
*rate_type = AMR_RATE_10200;
break;
case 12200:
*rate_type = AMR_RATE_12200;
break;
default:
pr_err("wrong rate for AMR NB.\n");
ret = -EINVAL;
break;
}
break;
}
case MODE_AMR_WB: {
switch (rate) {
case 6600:
*rate_type = AMR_RATE_6600 - AMR_RATE_6600;
break;
case 8850:
*rate_type = AMR_RATE_8850 - AMR_RATE_6600;
break;
case 12650:
*rate_type = AMR_RATE_12650 - AMR_RATE_6600;
break;
case 14250:
*rate_type = AMR_RATE_14250 - AMR_RATE_6600;
break;
case 15850:
*rate_type = AMR_RATE_15850 - AMR_RATE_6600;
break;
case 18250:
*rate_type = AMR_RATE_18250 - AMR_RATE_6600;
break;
case 19850:
*rate_type = AMR_RATE_19850 - AMR_RATE_6600;
break;
case 23050:
*rate_type = AMR_RATE_23050 - AMR_RATE_6600;
break;
case 23850:
*rate_type = AMR_RATE_23850 - AMR_RATE_6600;
break;
default:
pr_err("wrong rate for AMR_WB.\n");
ret = -EINVAL;
break;
}
break;
}
case MODE_PCM: {
*rate_type = 0;
break;
}
case MODE_IS127:
case MODE_4GV_NB:
case MODE_4GV_WB: {
switch (rate) {
case VOC_0_RATE:
case VOC_8_RATE:
case VOC_4_RATE:
case VOC_2_RATE:
case VOC_1_RATE:
*rate_type = rate;
break;
default:
pr_err("wrong rate for IS127/4GV_NB/WB.\n");
ret = -EINVAL;
break;
}
break;
}
case MODE_G711:
case MODE_G711A:
*rate_type = rate;
break;
default:
pr_err("wrong mode type.\n");
ret = -EINVAL;
}
pr_debug("%s, mode=%d, rate=%u, rate_type=%d\n",
__func__, mode, rate, *rate_type);
return ret;
}
static int voip_get_media_type(uint32_t mode, uint32_t rate_type,
unsigned int samp_rate,
uint32_t *media_type)
{
int ret = 0;
pr_debug("%s: mode=%d, samp_rate=%d\n", __func__,
mode, samp_rate);
switch (mode) {
case MODE_AMR:
*media_type = VSS_MEDIA_ID_AMR_NB_MODEM;
break;
case MODE_AMR_WB:
*media_type = VSS_MEDIA_ID_AMR_WB_MODEM;
break;
case MODE_PCM:
if (samp_rate == 8000)
*media_type = VSS_MEDIA_ID_PCM_NB;
else
*media_type = VSS_MEDIA_ID_PCM_WB;
break;
case MODE_IS127: /* EVRC-A */
*media_type = VSS_MEDIA_ID_EVRC_MODEM;
break;
case MODE_4GV_NB: /* EVRC-B */
*media_type = VSS_MEDIA_ID_4GV_NB_MODEM;
break;
case MODE_4GV_WB: /* EVRC-WB */
*media_type = VSS_MEDIA_ID_4GV_WB_MODEM;
break;
case MODE_G711:
case MODE_G711A:
if (rate_type == MVS_G711A_MODE_MULAW)
*media_type = VSS_MEDIA_ID_G711_MULAW;
else
*media_type = VSS_MEDIA_ID_G711_ALAW;
break;
default:
pr_debug(" input mode is not supported\n");
ret = -EINVAL;
}
pr_debug("%s: media_type is 0x%x\n", __func__, *media_type);
return ret;
}
static struct snd_pcm_ops msm_pcm_ops = {
.open = msm_pcm_open,
.copy = msm_pcm_copy,
.hw_params = msm_pcm_hw_params,
.close = msm_pcm_close,
.prepare = msm_pcm_prepare,
.trigger = msm_pcm_trigger,
.pointer = msm_pcm_pointer,
.mmap = msm_pcm_mmap,
};
static int msm_asoc_pcm_new(struct snd_soc_pcm_runtime *rtd)
{
struct snd_card *card = rtd->card->snd_card;
int ret = 0;
pr_debug("msm_asoc_pcm_new\n");
if (!card->dev->coherent_dma_mask)
card->dev->coherent_dma_mask = DMA_BIT_MASK(32);
return ret;
}
static struct snd_soc_platform_driver msm_soc_platform = {
.ops = &msm_pcm_ops,
.pcm_new = msm_asoc_pcm_new,
.probe = msm_pcm_voip_probe,
};
static __devinit int msm_pcm_probe(struct platform_device *pdev)
{
pr_info("%s: dev name %s\n", __func__, dev_name(&pdev->dev));
return snd_soc_register_platform(&pdev->dev,
&msm_soc_platform);
}
static int msm_pcm_remove(struct platform_device *pdev)
{
snd_soc_unregister_platform(&pdev->dev);
return 0;
}
static struct platform_driver msm_pcm_driver = {
.driver = {
.name = "msm-voip-dsp",
.owner = THIS_MODULE,
},
.probe = msm_pcm_probe,
.remove = __devexit_p(msm_pcm_remove),
};
static int __init msm_soc_platform_init(void)
{
memset(&voip_info, 0, sizeof(voip_info));
voip_info.mode = MODE_PCM;
mutex_init(&voip_info.lock);
spin_lock_init(&voip_info.dsp_lock);
spin_lock_init(&voip_info.dsp_ul_lock);
init_waitqueue_head(&voip_info.out_wait);
init_waitqueue_head(&voip_info.in_wait);
INIT_LIST_HEAD(&voip_info.in_queue);
INIT_LIST_HEAD(&voip_info.free_in_queue);
INIT_LIST_HEAD(&voip_info.out_queue);
INIT_LIST_HEAD(&voip_info.free_out_queue);
return platform_driver_register(&msm_pcm_driver);
}
module_init(msm_soc_platform_init);
static void __exit msm_soc_platform_exit(void)
{
platform_driver_unregister(&msm_pcm_driver);
}
module_exit(msm_soc_platform_exit);
MODULE_DESCRIPTION("PCM module platform driver");
MODULE_LICENSE("GPL v2");
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