blob: 309648f076e8aa676dbb6bd435127eae1e5b394e [file] [log] [blame]
/* Copyright (c) 2016-2017, 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/kernel.h>
#include <linux/module.h>
#include <linux/of_gpio.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/debugfs.h>
#include <linux/slimbus/slimbus.h>
#include <linux/ratelimit.h>
#include <linux/slab.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/tlv.h>
#include <btfm_slim.h>
static int bt_soc_enable_status;
static int btfm_slim_codec_write(struct snd_soc_codec *codec, unsigned int reg,
unsigned int value)
{
return 0;
}
static unsigned int btfm_slim_codec_read(struct snd_soc_codec *codec,
unsigned int reg)
{
return 0;
}
static int bt_soc_status_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
ucontrol->value.integer.value[0] = bt_soc_enable_status;
return 1;
}
static int bt_soc_status_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
return 1;
}
static const struct snd_kcontrol_new status_controls[] = {
SOC_SINGLE_EXT("BT SOC status", 0, 0, 1, 0,
bt_soc_status_get,
bt_soc_status_put)
};
static int btfm_slim_codec_probe(struct snd_soc_codec *codec)
{
snd_soc_add_codec_controls(codec, status_controls,
ARRAY_SIZE(status_controls));
return 0;
}
static int btfm_slim_codec_remove(struct snd_soc_codec *codec)
{
return 0;
}
static int btfm_slim_dai_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
int ret;
struct btfmslim *btfmslim = dai->dev->platform_data;
BTFMSLIM_DBG("substream = %s stream = %d dai->name = %s",
substream->name, substream->stream, dai->name);
ret = btfm_slim_hw_init(btfmslim);
return ret;
}
static void btfm_slim_dai_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
int i;
struct btfmslim *btfmslim = dai->dev->platform_data;
struct btfmslim_ch *ch;
uint8_t rxport, grp = false, nchan = 1;
BTFMSLIM_DBG("dai->name: %s, dai->id: %d, dai->rate: %d", dai->name,
dai->id, dai->rate);
switch (dai->id) {
case BTFM_FM_SLIM_TX:
grp = true; nchan = 2;
ch = btfmslim->tx_chs;
rxport = 0;
break;
case BTFM_BT_SCO_SLIM_TX:
ch = btfmslim->tx_chs;
rxport = 0;
break;
case BTFM_BT_SCO_A2DP_SLIM_RX:
case BTFM_BT_SPLIT_A2DP_SLIM_RX:
ch = btfmslim->rx_chs;
rxport = 1;
break;
case BTFM_SLIM_NUM_CODEC_DAIS:
default:
BTFMSLIM_ERR("dai->id is invalid:%d", dai->id);
return;
}
/* Search for dai->id matched port handler */
for (i = 0; (i < BTFM_SLIM_NUM_CODEC_DAIS) &&
(ch->id != BTFM_SLIM_NUM_CODEC_DAIS) &&
(ch->id != dai->id); ch++, i++)
;
if ((ch->port == BTFM_SLIM_PGD_PORT_LAST) ||
(ch->id == BTFM_SLIM_NUM_CODEC_DAIS)) {
BTFMSLIM_ERR("ch is invalid!!");
return;
}
btfm_slim_disable_ch(btfmslim, ch, rxport, grp, nchan);
btfm_slim_hw_deinit(btfmslim);
}
static int btfm_slim_dai_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
BTFMSLIM_DBG("dai->name = %s DAI-ID %x rate %d num_ch %d",
dai->name, dai->id, params_rate(params),
params_channels(params));
return 0;
}
static int btfm_slim_dai_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
int i, ret = -EINVAL;
struct btfmslim *btfmslim = dai->dev->platform_data;
struct btfmslim_ch *ch;
uint8_t rxport, grp = false, nchan = 1;
bt_soc_enable_status = 0;
BTFMSLIM_DBG("dai->name: %s, dai->id: %d, dai->rate: %d", dai->name,
dai->id, dai->rate);
/* save sample rate */
btfmslim->sample_rate = dai->rate;
switch (dai->id) {
case BTFM_FM_SLIM_TX:
grp = true; nchan = 2;
ch = btfmslim->tx_chs;
rxport = 0;
break;
case BTFM_BT_SCO_SLIM_TX:
ch = btfmslim->tx_chs;
rxport = 0;
break;
case BTFM_BT_SCO_A2DP_SLIM_RX:
case BTFM_BT_SPLIT_A2DP_SLIM_RX:
ch = btfmslim->rx_chs;
rxport = 1;
break;
case BTFM_SLIM_NUM_CODEC_DAIS:
default:
BTFMSLIM_ERR("dai->id is invalid:%d", dai->id);
return ret;
}
/* Search for dai->id matched port handler */
for (i = 0; (i < BTFM_SLIM_NUM_CODEC_DAIS) &&
(ch->id != BTFM_SLIM_NUM_CODEC_DAIS) &&
(ch->id != dai->id); ch++, i++)
;
if ((ch->port == BTFM_SLIM_PGD_PORT_LAST) ||
(ch->id == BTFM_SLIM_NUM_CODEC_DAIS)) {
BTFMSLIM_ERR("ch is invalid!!");
return ret;
}
ret = btfm_slim_enable_ch(btfmslim, ch, rxport, dai->rate, grp, nchan);
/* save the enable channel status */
if (ret == 0)
bt_soc_enable_status = 1;
return ret;
}
/* This function will be called once during boot up */
static int btfm_slim_dai_set_channel_map(struct snd_soc_dai *dai,
unsigned int tx_num, unsigned int *tx_slot,
unsigned int rx_num, unsigned int *rx_slot)
{
int ret = -EINVAL, i;
struct btfmslim *btfmslim = dai->dev->platform_data;
struct btfmslim_ch *rx_chs;
struct btfmslim_ch *tx_chs;
BTFMSLIM_DBG("");
if (!btfmslim)
return ret;
rx_chs = btfmslim->rx_chs;
tx_chs = btfmslim->tx_chs;
if (!rx_chs || !tx_chs)
return ret;
BTFMSLIM_DBG("Rx: id\tname\tport\thdl\tch\tch_hdl");
for (i = 0; (rx_chs->port != BTFM_SLIM_PGD_PORT_LAST) && (i < rx_num);
i++, rx_chs++) {
/* Set Rx Channel number from machine driver and
* get channel handler from slimbus driver
*/
rx_chs->ch = *(uint8_t *)(rx_slot + i);
ret = slim_query_ch(btfmslim->slim_pgd, rx_chs->ch,
&rx_chs->ch_hdl);
if (ret < 0) {
BTFMSLIM_ERR("slim_query_ch failure ch#%d - ret[%d]",
rx_chs->ch, ret);
goto error;
}
BTFMSLIM_DBG(" %d\t%s\t%d\t%x\t%d\t%x", rx_chs->id,
rx_chs->name, rx_chs->port, rx_chs->port_hdl,
rx_chs->ch, rx_chs->ch_hdl);
}
BTFMSLIM_DBG("Tx: id\tname\tport\thdl\tch\tch_hdl");
for (i = 0; (tx_chs->port != BTFM_SLIM_PGD_PORT_LAST) && (i < tx_num);
i++, tx_chs++) {
/* Set Tx Channel number from machine driver and
* get channel handler from slimbus driver
*/
tx_chs->ch = *(uint8_t *)(tx_slot + i);
ret = slim_query_ch(btfmslim->slim_pgd, tx_chs->ch,
&tx_chs->ch_hdl);
if (ret < 0) {
BTFMSLIM_ERR("slim_query_ch failure ch#%d - ret[%d]",
tx_chs->ch, ret);
goto error;
}
BTFMSLIM_DBG(" %d\t%s\t%d\t%x\t%d\t%x", tx_chs->id,
tx_chs->name, tx_chs->port, tx_chs->port_hdl,
tx_chs->ch, tx_chs->ch_hdl);
}
error:
return ret;
}
static int btfm_slim_dai_get_channel_map(struct snd_soc_dai *dai,
unsigned int *tx_num, unsigned int *tx_slot,
unsigned int *rx_num, unsigned int *rx_slot)
{
int i, ret = -EINVAL, *slot = NULL, j = 0, num = 1;
struct btfmslim *btfmslim = dai->dev->platform_data;
struct btfmslim_ch *ch = NULL;
if (!btfmslim)
return ret;
switch (dai->id) {
case BTFM_FM_SLIM_TX:
num = 2;
case BTFM_BT_SCO_SLIM_TX:
if (!tx_slot || !tx_num) {
BTFMSLIM_ERR("Invalid tx_slot %p or tx_num %p",
tx_slot, tx_num);
return -EINVAL;
}
ch = btfmslim->tx_chs;
if (!ch)
return -EINVAL;
slot = tx_slot;
*rx_slot = 0;
*tx_num = num;
*rx_num = 0;
break;
case BTFM_BT_SCO_A2DP_SLIM_RX:
case BTFM_BT_SPLIT_A2DP_SLIM_RX:
if (!rx_slot || !rx_num) {
BTFMSLIM_ERR("Invalid rx_slot %p or rx_num %p",
rx_slot, rx_num);
return -EINVAL;
}
ch = btfmslim->rx_chs;
if (!ch)
return -EINVAL;
slot = rx_slot;
*tx_slot = 0;
*tx_num = 0;
*rx_num = num;
break;
default:
BTFMSLIM_ERR("Unsupported DAI %d", dai->id);
return -EINVAL;
}
do {
if (!ch)
return -EINVAL;
for (i = 0; (i < BTFM_SLIM_NUM_CODEC_DAIS) && (ch->id !=
BTFM_SLIM_NUM_CODEC_DAIS) && (ch->id != dai->id);
ch++, i++)
;
if (ch->id == BTFM_SLIM_NUM_CODEC_DAIS ||
i == BTFM_SLIM_NUM_CODEC_DAIS) {
BTFMSLIM_ERR(
"No channel has been allocated for dai (%d)",
dai->id);
return -EINVAL;
}
if (!slot)
return -EINVAL;
*(slot + j) = ch->ch;
BTFMSLIM_DBG("id:%d, port:%d, ch:%d, slot: %d", ch->id,
ch->port, ch->ch, *(slot + j));
/* In case it has mulitiple channels */
if (++j < num)
ch++;
} while (j < num);
return 0;
}
static struct snd_soc_dai_ops btfmslim_dai_ops = {
.startup = btfm_slim_dai_startup,
.shutdown = btfm_slim_dai_shutdown,
.hw_params = btfm_slim_dai_hw_params,
.prepare = btfm_slim_dai_prepare,
.set_channel_map = btfm_slim_dai_set_channel_map,
.get_channel_map = btfm_slim_dai_get_channel_map,
};
static struct snd_soc_dai_driver btfmslim_dai[] = {
{ /* FM Audio data multiple channel : FM -> qdsp */
.name = "btfm_fm_slim_tx",
.id = BTFM_FM_SLIM_TX,
.capture = {
.stream_name = "FM TX Capture",
.rates = SNDRV_PCM_RATE_48000, /* 48 KHz */
.formats = SNDRV_PCM_FMTBIT_S16_LE, /* 16 bits */
.rate_max = 48000,
.rate_min = 48000,
.channels_min = 1,
.channels_max = 2,
},
.ops = &btfmslim_dai_ops,
},
{ /* Bluetooth SCO voice uplink: bt -> modem */
.name = "btfm_bt_sco_slim_tx",
.id = BTFM_BT_SCO_SLIM_TX,
.capture = {
.stream_name = "SCO TX Capture",
/* 8 KHz or 16 KHz */
.rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000,
.formats = SNDRV_PCM_FMTBIT_S16_LE, /* 16 bits */
.rate_max = 16000,
.rate_min = 8000,
.channels_min = 1,
.channels_max = 1,
},
.ops = &btfmslim_dai_ops,
},
{ /* Bluetooth SCO voice downlink: modem -> bt or A2DP Playback */
.name = "btfm_bt_sco_a2dp_slim_rx",
.id = BTFM_BT_SCO_A2DP_SLIM_RX,
.playback = {
.stream_name = "SCO A2DP RX Playback",
.rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000
| SNDRV_PCM_RATE_48000, /* 8 or 16 or 48 Khz*/
.formats = SNDRV_PCM_FMTBIT_S16_LE, /* 16 bits */
.rate_max = 48000,
.rate_min = 8000,
.channels_min = 1,
.channels_max = 1,
},
.ops = &btfmslim_dai_ops,
},
{ /* Bluetooth Split A2DP data: qdsp -> bt */
.name = "btfm_bt_split_a2dp_slim_rx",
.id = BTFM_BT_SPLIT_A2DP_SLIM_RX,
.playback = {
.stream_name = "SPLIT A2DP Playback",
.rates = SNDRV_PCM_RATE_48000, /* 48 KHz */
.formats = SNDRV_PCM_FMTBIT_S16_LE, /* 16 bits */
.rate_max = 48000,
.rate_min = 48000,
.channels_min = 1,
.channels_max = 1,
},
.ops = &btfmslim_dai_ops,
},
};
static struct snd_soc_codec_driver btfmslim_codec = {
.probe = btfm_slim_codec_probe,
.remove = btfm_slim_codec_remove,
.read = btfm_slim_codec_read,
.write = btfm_slim_codec_write,
};
int btfm_slim_register_codec(struct device *dev)
{
int ret = 0;
BTFMSLIM_DBG("");
/* Register Codec driver */
ret = snd_soc_register_codec(dev, &btfmslim_codec,
btfmslim_dai, ARRAY_SIZE(btfmslim_dai));
if (ret)
BTFMSLIM_ERR("failed to register codec (%d)", ret);
return ret;
}
void btfm_slim_unregister_codec(struct device *dev)
{
BTFMSLIM_DBG("");
/* Unregister Codec driver */
snd_soc_unregister_codec(dev);
}
MODULE_DESCRIPTION("BTFM Slimbus Codec driver");
MODULE_LICENSE("GPL v2");