ASoC: sti: Add CPU DAI driver for playback
Add code to manage Uniperipheral player IP instances. These DAIs are dedicated to playback and support I2S and IEC modes. Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Arnaud Pouliquen
Mark Brown
parent
e1ecace6a6
commit
76c2145ded
|
|
@ -10,6 +10,8 @@
|
|||
|
||||
#include <linux/regmap.h>
|
||||
|
||||
#include <sound/dmaengine_pcm.h>
|
||||
|
||||
/*
|
||||
* Register access macros
|
||||
*/
|
||||
|
|
@ -1097,3 +1099,117 @@
|
|||
UNIPERIF_DBG_STANDBY_LEFT_SP_OFFSET(ip), \
|
||||
UNIPERIF_DBG_STANDBY_LEFT_SP_SHIFT(ip), \
|
||||
UNIPERIF_DBG_STANDBY_LEFT_SP_MASK(ip), value)
|
||||
|
||||
/*
|
||||
* uniperipheral IP capabilities
|
||||
*/
|
||||
|
||||
#define UNIPERIF_FIFO_SIZE 70 /* FIFO is 70 cells deep */
|
||||
#define UNIPERIF_FIFO_FRAMES 4 /* FDMA trigger limit in frames */
|
||||
|
||||
/*
|
||||
* Uniperipheral IP revisions
|
||||
*/
|
||||
enum uniperif_version {
|
||||
SND_ST_UNIPERIF_VERSION_UNKNOWN,
|
||||
/* SASG1 (Orly), Newman */
|
||||
SND_ST_UNIPERIF_VERSION_C6AUD0_UNI_1_0,
|
||||
/* SASC1, SASG2 (Orly2) */
|
||||
SND_ST_UNIPERIF_VERSION_UNI_PLR_1_0,
|
||||
/* SASC1, SASG2 (Orly2), TELSS, Cannes */
|
||||
SND_ST_UNIPERIF_VERSION_UNI_RDR_1_0,
|
||||
/* TELSS (SASC1) */
|
||||
SND_ST_UNIPERIF_VERSION_TDM_PLR_1_0,
|
||||
/* Cannes/Monaco */
|
||||
SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0
|
||||
};
|
||||
|
||||
enum uniperif_type {
|
||||
SND_ST_UNIPERIF_PLAYER_TYPE_NONE,
|
||||
SND_ST_UNIPERIF_PLAYER_TYPE_HDMI,
|
||||
SND_ST_UNIPERIF_PLAYER_TYPE_PCM,
|
||||
SND_ST_UNIPERIF_PLAYER_TYPE_SPDIF
|
||||
};
|
||||
|
||||
enum uniperif_state {
|
||||
UNIPERIF_STATE_STOPPED,
|
||||
UNIPERIF_STATE_STARTED,
|
||||
UNIPERIF_STATE_STANDBY,
|
||||
UNIPERIF_STATE_UNDERFLOW,
|
||||
UNIPERIF_STATE_OVERFLOW = UNIPERIF_STATE_UNDERFLOW,
|
||||
UNIPERIF_STATE_XRUN
|
||||
};
|
||||
|
||||
enum uniperif_iec958_encoding_mode {
|
||||
UNIPERIF_IEC958_ENCODING_MODE_PCM,
|
||||
UNIPERIF_IEC958_ENCODING_MODE_ENCODED
|
||||
};
|
||||
|
||||
struct uniperif_info {
|
||||
int id; /* instance value of the uniperipheral IP */
|
||||
enum uniperif_type player_type;
|
||||
int underflow_enabled; /* Underflow recovery mode */
|
||||
};
|
||||
|
||||
struct uniperif_iec958_settings {
|
||||
enum uniperif_iec958_encoding_mode encoding_mode;
|
||||
struct snd_aes_iec958 iec958;
|
||||
};
|
||||
|
||||
struct uniperif {
|
||||
/* System information */
|
||||
struct uniperif_info *info;
|
||||
struct device *dev;
|
||||
int ver; /* IP version, used by register access macros */
|
||||
struct regmap_field *clk_sel;
|
||||
|
||||
/* capabilities */
|
||||
const struct snd_pcm_hardware *hw;
|
||||
|
||||
/* Resources */
|
||||
struct resource *mem_region;
|
||||
void *base;
|
||||
unsigned long fifo_phys_address;
|
||||
int irq;
|
||||
|
||||
/* Clocks */
|
||||
struct clk *clk;
|
||||
int mclk;
|
||||
|
||||
/* Runtime data */
|
||||
enum uniperif_state state;
|
||||
|
||||
struct snd_pcm_substream *substream;
|
||||
|
||||
/* Specific to IEC958 player */
|
||||
struct uniperif_iec958_settings stream_settings;
|
||||
|
||||
/*alsa ctrl*/
|
||||
struct snd_kcontrol_new *snd_ctrls;
|
||||
int num_ctrls;
|
||||
|
||||
/* dai properties */
|
||||
unsigned int daifmt;
|
||||
|
||||
/* DAI callbacks */
|
||||
const struct snd_soc_dai_ops *dai_ops;
|
||||
};
|
||||
|
||||
struct sti_uniperiph_dai {
|
||||
int stream;
|
||||
struct uniperif *uni;
|
||||
struct snd_dmaengine_dai_dma_data dma_data;
|
||||
};
|
||||
|
||||
struct sti_uniperiph_data {
|
||||
struct platform_device *pdev;
|
||||
struct snd_soc_dai_driver *dai;
|
||||
struct sti_uniperiph_dai dai_data;
|
||||
};
|
||||
|
||||
/* uniperiph player*/
|
||||
int uni_player_init(struct platform_device *pdev,
|
||||
struct uniperif *uni_player);
|
||||
int uni_player_resume(struct uniperif *player);
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -0,0 +1,890 @@
|
|||
/*
|
||||
* Copyright (C) STMicroelectronics SA 2015
|
||||
* Authors: Arnaud Pouliquen <arnaud.pouliquen@st.com>
|
||||
* for STMicroelectronics.
|
||||
* License terms: GNU General Public License (GPL), version 2
|
||||
*/
|
||||
|
||||
#include <linux/clk.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/mfd/syscon.h>
|
||||
|
||||
#include <sound/asoundef.h>
|
||||
#include <sound/soc.h>
|
||||
|
||||
#include "uniperif.h"
|
||||
|
||||
/*
|
||||
* Some hardware-related definitions
|
||||
*/
|
||||
|
||||
/* sys config registers definitions */
|
||||
#define SYS_CFG_AUDIO_GLUE 0xA4
|
||||
#define SYS_CFG_AUDI0_GLUE_PCM_CLKX 8
|
||||
|
||||
/*
|
||||
* Driver specific types.
|
||||
*/
|
||||
#define UNIPERIF_PLAYER_TYPE_IS_HDMI(p) \
|
||||
((p)->info->player_type == SND_ST_UNIPERIF_PLAYER_TYPE_HDMI)
|
||||
#define UNIPERIF_PLAYER_TYPE_IS_PCM(p) \
|
||||
((p)->info->player_type == SND_ST_UNIPERIF_PLAYER_TYPE_PCM)
|
||||
#define UNIPERIF_PLAYER_TYPE_IS_SPDIF(p) \
|
||||
((p)->info->player_type == SND_ST_UNIPERIF_PLAYER_TYPE_SPDIF)
|
||||
#define UNIPERIF_PLAYER_TYPE_IS_IEC958(p) \
|
||||
(UNIPERIF_PLAYER_TYPE_IS_HDMI(p) || \
|
||||
UNIPERIF_PLAYER_TYPE_IS_SPDIF(p))
|
||||
|
||||
/*
|
||||
* Note: snd_pcm_hardware is linked to DMA controller but is declared here to
|
||||
* integrate DAI_CPU capability in term of rate and supported channels
|
||||
*/
|
||||
const struct snd_pcm_hardware uni_player_pcm_hw = {
|
||||
.info = SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER |
|
||||
SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_MMAP |
|
||||
SNDRV_PCM_INFO_MMAP_VALID,
|
||||
.formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE,
|
||||
|
||||
.rates = SNDRV_PCM_RATE_CONTINUOUS,
|
||||
.rate_min = 8000,
|
||||
.rate_max = 192000,
|
||||
|
||||
.channels_min = 2,
|
||||
.channels_max = 8,
|
||||
|
||||
.periods_min = 2,
|
||||
.periods_max = 48,
|
||||
|
||||
.period_bytes_min = 128,
|
||||
.period_bytes_max = 64 * PAGE_SIZE,
|
||||
.buffer_bytes_max = 256 * PAGE_SIZE
|
||||
};
|
||||
|
||||
static inline int reset_player(struct uniperif *player)
|
||||
{
|
||||
int count = 10;
|
||||
|
||||
if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0) {
|
||||
while (GET_UNIPERIF_SOFT_RST_SOFT_RST(player) && count) {
|
||||
udelay(5);
|
||||
count--;
|
||||
}
|
||||
}
|
||||
|
||||
if (!count) {
|
||||
dev_err(player->dev, "Failed to reset uniperif");
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* uni_player_irq_handler
|
||||
* In case of error audio stream is stopped; stop action is protected via PCM
|
||||
* stream lock to avoid race condition with trigger callback.
|
||||
*/
|
||||
static irqreturn_t uni_player_irq_handler(int irq, void *dev_id)
|
||||
{
|
||||
irqreturn_t ret = IRQ_NONE;
|
||||
struct uniperif *player = dev_id;
|
||||
unsigned int status;
|
||||
unsigned int tmp;
|
||||
|
||||
if (player->state == UNIPERIF_STATE_STOPPED) {
|
||||
/* Unexpected IRQ: do nothing */
|
||||
return IRQ_NONE;
|
||||
}
|
||||
|
||||
/* Get interrupt status & clear them immediately */
|
||||
status = GET_UNIPERIF_ITS(player);
|
||||
SET_UNIPERIF_ITS_BCLR(player, status);
|
||||
|
||||
/* Check for fifo error (underrun) */
|
||||
if (unlikely(status & UNIPERIF_ITS_FIFO_ERROR_MASK(player))) {
|
||||
dev_err(player->dev, "FIFO underflow error detected");
|
||||
|
||||
/* Interrupt is just for information when underflow recovery */
|
||||
if (player->info->underflow_enabled) {
|
||||
/* Update state to underflow */
|
||||
player->state = UNIPERIF_STATE_UNDERFLOW;
|
||||
|
||||
} else {
|
||||
/* Disable interrupt so doesn't continually fire */
|
||||
SET_UNIPERIF_ITM_BCLR_FIFO_ERROR(player);
|
||||
|
||||
/* Stop the player */
|
||||
snd_pcm_stream_lock(player->substream);
|
||||
snd_pcm_stop(player->substream, SNDRV_PCM_STATE_XRUN);
|
||||
snd_pcm_stream_unlock(player->substream);
|
||||
}
|
||||
|
||||
ret = IRQ_HANDLED;
|
||||
}
|
||||
|
||||
/* Check for dma error (overrun) */
|
||||
if (unlikely(status & UNIPERIF_ITS_DMA_ERROR_MASK(player))) {
|
||||
dev_err(player->dev, "DMA error detected");
|
||||
|
||||
/* Disable interrupt so doesn't continually fire */
|
||||
SET_UNIPERIF_ITM_BCLR_DMA_ERROR(player);
|
||||
|
||||
/* Stop the player */
|
||||
snd_pcm_stream_lock(player->substream);
|
||||
snd_pcm_stop(player->substream, SNDRV_PCM_STATE_XRUN);
|
||||
snd_pcm_stream_unlock(player->substream);
|
||||
|
||||
ret = IRQ_HANDLED;
|
||||
}
|
||||
|
||||
/* Check for underflow recovery done */
|
||||
if (unlikely(status & UNIPERIF_ITM_UNDERFLOW_REC_DONE_MASK(player))) {
|
||||
if (!player->info->underflow_enabled) {
|
||||
dev_err(player->dev, "unexpected Underflow recovering");
|
||||
return -EPERM;
|
||||
}
|
||||
/* Read the underflow recovery duration */
|
||||
tmp = GET_UNIPERIF_STATUS_1_UNDERFLOW_DURATION(player);
|
||||
|
||||
/* Clear the underflow recovery duration */
|
||||
SET_UNIPERIF_BIT_CONTROL_CLR_UNDERFLOW_DURATION(player);
|
||||
|
||||
/* Update state to started */
|
||||
player->state = UNIPERIF_STATE_STARTED;
|
||||
|
||||
ret = IRQ_HANDLED;
|
||||
}
|
||||
|
||||
/* Check if underflow recovery failed */
|
||||
if (unlikely(status &
|
||||
UNIPERIF_ITM_UNDERFLOW_REC_FAILED_MASK(player))) {
|
||||
dev_err(player->dev, "Underflow recovery failed");
|
||||
|
||||
/* Stop the player */
|
||||
snd_pcm_stream_lock(player->substream);
|
||||
snd_pcm_stop(player->substream, SNDRV_PCM_STATE_XRUN);
|
||||
snd_pcm_stream_unlock(player->substream);
|
||||
|
||||
ret = IRQ_HANDLED;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void uni_player_set_channel_status(struct uniperif *player,
|
||||
struct snd_pcm_runtime *runtime)
|
||||
{
|
||||
int n;
|
||||
unsigned int status;
|
||||
|
||||
/*
|
||||
* Some AVRs and TVs require the channel status to contain a correct
|
||||
* sampling frequency. If no sample rate is already specified, then
|
||||
* set one.
|
||||
*/
|
||||
if (runtime && (player->stream_settings.iec958.status[3]
|
||||
== IEC958_AES3_CON_FS_NOTID)) {
|
||||
switch (runtime->rate) {
|
||||
case 22050:
|
||||
player->stream_settings.iec958.status[3] =
|
||||
IEC958_AES3_CON_FS_22050;
|
||||
break;
|
||||
case 44100:
|
||||
player->stream_settings.iec958.status[3] =
|
||||
IEC958_AES3_CON_FS_44100;
|
||||
break;
|
||||
case 88200:
|
||||
player->stream_settings.iec958.status[3] =
|
||||
IEC958_AES3_CON_FS_88200;
|
||||
break;
|
||||
case 176400:
|
||||
player->stream_settings.iec958.status[3] =
|
||||
IEC958_AES3_CON_FS_176400;
|
||||
break;
|
||||
case 24000:
|
||||
player->stream_settings.iec958.status[3] =
|
||||
IEC958_AES3_CON_FS_24000;
|
||||
break;
|
||||
case 48000:
|
||||
player->stream_settings.iec958.status[3] =
|
||||
IEC958_AES3_CON_FS_48000;
|
||||
break;
|
||||
case 96000:
|
||||
player->stream_settings.iec958.status[3] =
|
||||
IEC958_AES3_CON_FS_96000;
|
||||
break;
|
||||
case 192000:
|
||||
player->stream_settings.iec958.status[3] =
|
||||
IEC958_AES3_CON_FS_192000;
|
||||
break;
|
||||
case 32000:
|
||||
player->stream_settings.iec958.status[3] =
|
||||
IEC958_AES3_CON_FS_32000;
|
||||
break;
|
||||
default:
|
||||
/* Mark as sampling frequency not indicated */
|
||||
player->stream_settings.iec958.status[3] =
|
||||
IEC958_AES3_CON_FS_NOTID;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* Audio mode:
|
||||
* Use audio mode status to select PCM or encoded mode
|
||||
*/
|
||||
if (player->stream_settings.iec958.status[0] & IEC958_AES0_NONAUDIO)
|
||||
player->stream_settings.encoding_mode =
|
||||
UNIPERIF_IEC958_ENCODING_MODE_ENCODED;
|
||||
else
|
||||
player->stream_settings.encoding_mode =
|
||||
UNIPERIF_IEC958_ENCODING_MODE_PCM;
|
||||
|
||||
if (player->stream_settings.encoding_mode ==
|
||||
UNIPERIF_IEC958_ENCODING_MODE_PCM)
|
||||
/* Clear user validity bits */
|
||||
SET_UNIPERIF_USER_VALIDITY_VALIDITY_LR(player, 0);
|
||||
else
|
||||
/* Set user validity bits */
|
||||
SET_UNIPERIF_USER_VALIDITY_VALIDITY_LR(player, 1);
|
||||
|
||||
/* Program the new channel status */
|
||||
for (n = 0; n < 6; ++n) {
|
||||
status =
|
||||
player->stream_settings.iec958.status[0 + (n * 4)] & 0xf;
|
||||
status |=
|
||||
player->stream_settings.iec958.status[1 + (n * 4)] << 8;
|
||||
status |=
|
||||
player->stream_settings.iec958.status[2 + (n * 4)] << 16;
|
||||
status |=
|
||||
player->stream_settings.iec958.status[3 + (n * 4)] << 24;
|
||||
SET_UNIPERIF_CHANNEL_STA_REGN(player, n, status);
|
||||
}
|
||||
|
||||
/* Update the channel status */
|
||||
if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0)
|
||||
SET_UNIPERIF_CONFIG_CHL_STS_UPDATE(player);
|
||||
else
|
||||
SET_UNIPERIF_BIT_CONTROL_CHL_STS_UPDATE(player);
|
||||
}
|
||||
|
||||
static int uni_player_prepare_iec958(struct uniperif *player,
|
||||
struct snd_pcm_runtime *runtime)
|
||||
{
|
||||
int clk_div;
|
||||
|
||||
clk_div = player->mclk / runtime->rate;
|
||||
|
||||
/* Oversampling must be multiple of 128 as iec958 frame is 32-bits */
|
||||
if ((clk_div % 128) || (clk_div <= 0)) {
|
||||
dev_err(player->dev, "%s: invalid clk_div %d",
|
||||
__func__, clk_div);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
switch (runtime->format) {
|
||||
case SNDRV_PCM_FORMAT_S16_LE:
|
||||
/* 16/16 memory format */
|
||||
SET_UNIPERIF_CONFIG_MEM_FMT_16_16(player);
|
||||
/* 16-bits per sub-frame */
|
||||
SET_UNIPERIF_I2S_FMT_NBIT_32(player);
|
||||
/* Set 16-bit sample precision */
|
||||
SET_UNIPERIF_I2S_FMT_DATA_SIZE_16(player);
|
||||
break;
|
||||
case SNDRV_PCM_FORMAT_S32_LE:
|
||||
/* 16/0 memory format */
|
||||
SET_UNIPERIF_CONFIG_MEM_FMT_16_0(player);
|
||||
/* 32-bits per sub-frame */
|
||||
SET_UNIPERIF_I2S_FMT_NBIT_32(player);
|
||||
/* Set 24-bit sample precision */
|
||||
SET_UNIPERIF_I2S_FMT_DATA_SIZE_24(player);
|
||||
break;
|
||||
default:
|
||||
dev_err(player->dev, "format not supported");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* Set parity to be calculated by the hardware */
|
||||
SET_UNIPERIF_CONFIG_PARITY_CNTR_BY_HW(player);
|
||||
|
||||
/* Set channel status bits to be inserted by the hardware */
|
||||
SET_UNIPERIF_CONFIG_CHANNEL_STA_CNTR_BY_HW(player);
|
||||
|
||||
/* Set user data bits to be inserted by the hardware */
|
||||
SET_UNIPERIF_CONFIG_USER_DAT_CNTR_BY_HW(player);
|
||||
|
||||
/* Set validity bits to be inserted by the hardware */
|
||||
SET_UNIPERIF_CONFIG_VALIDITY_DAT_CNTR_BY_HW(player);
|
||||
|
||||
/* Set full software control to disabled */
|
||||
SET_UNIPERIF_CONFIG_SPDIF_SW_CTRL_DISABLE(player);
|
||||
|
||||
SET_UNIPERIF_CTRL_ZERO_STUFF_HW(player);
|
||||
|
||||
/* Update the channel status */
|
||||
uni_player_set_channel_status(player, runtime);
|
||||
|
||||
/* Clear the user validity user bits */
|
||||
SET_UNIPERIF_USER_VALIDITY_VALIDITY_LR(player, 0);
|
||||
|
||||
/* Disable one-bit audio mode */
|
||||
SET_UNIPERIF_CONFIG_ONE_BIT_AUD_DISABLE(player);
|
||||
|
||||
/* Enable consecutive frames repetition of Z preamble (not for HBRA) */
|
||||
SET_UNIPERIF_CONFIG_REPEAT_CHL_STS_ENABLE(player);
|
||||
|
||||
/* Change to SUF0_SUBF1 and left/right channels swap! */
|
||||
SET_UNIPERIF_CONFIG_SUBFRAME_SEL_SUBF1_SUBF0(player);
|
||||
|
||||
/* Set data output as MSB first */
|
||||
SET_UNIPERIF_I2S_FMT_ORDER_MSB(player);
|
||||
|
||||
if (player->stream_settings.encoding_mode ==
|
||||
UNIPERIF_IEC958_ENCODING_MODE_ENCODED)
|
||||
SET_UNIPERIF_CTRL_EXIT_STBY_ON_EOBLOCK_ON(player);
|
||||
else
|
||||
SET_UNIPERIF_CTRL_EXIT_STBY_ON_EOBLOCK_OFF(player);
|
||||
|
||||
SET_UNIPERIF_I2S_FMT_NUM_CH(player, runtime->channels / 2);
|
||||
|
||||
/* Set rounding to off */
|
||||
SET_UNIPERIF_CTRL_ROUNDING_OFF(player);
|
||||
|
||||
/* Set clock divisor */
|
||||
SET_UNIPERIF_CTRL_DIVIDER(player, clk_div / 128);
|
||||
|
||||
/* Set the spdif latency to not wait before starting player */
|
||||
SET_UNIPERIF_CTRL_SPDIF_LAT_OFF(player);
|
||||
|
||||
/*
|
||||
* Ensure iec958 formatting is off. It will be enabled in function
|
||||
* uni_player_start() at the same time as the operation
|
||||
* mode is set to work around a silicon issue.
|
||||
*/
|
||||
if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0)
|
||||
SET_UNIPERIF_CTRL_SPDIF_FMT_OFF(player);
|
||||
else
|
||||
SET_UNIPERIF_CTRL_SPDIF_FMT_ON(player);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int uni_player_prepare_pcm(struct uniperif *player,
|
||||
struct snd_pcm_runtime *runtime)
|
||||
{
|
||||
int output_frame_size, slot_width, clk_div;
|
||||
|
||||
/* Force slot width to 32 in I2S mode (HW constraint) */
|
||||
if ((player->daifmt & SND_SOC_DAIFMT_FORMAT_MASK) ==
|
||||
SND_SOC_DAIFMT_I2S) {
|
||||
slot_width = 32;
|
||||
} else {
|
||||
switch (runtime->format) {
|
||||
case SNDRV_PCM_FORMAT_S16_LE:
|
||||
slot_width = 16;
|
||||
break;
|
||||
default:
|
||||
slot_width = 32;
|
||||
break;
|
||||
}
|
||||
}
|
||||
output_frame_size = slot_width * runtime->channels;
|
||||
|
||||
clk_div = player->mclk / runtime->rate;
|
||||
/*
|
||||
* For 32 bits subframe clk_div must be a multiple of 128,
|
||||
* for 16 bits must be a multiple of 64
|
||||
*/
|
||||
if ((slot_width == 32) && (clk_div % 128)) {
|
||||
dev_err(player->dev, "%s: invalid clk_div", __func__);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if ((slot_width == 16) && (clk_div % 64)) {
|
||||
dev_err(player->dev, "%s: invalid clk_div", __func__);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/*
|
||||
* Number of bits per subframe (which is one channel sample)
|
||||
* on output - Transfer 16 or 32 bits from FIFO
|
||||
*/
|
||||
switch (slot_width) {
|
||||
case 32:
|
||||
SET_UNIPERIF_I2S_FMT_NBIT_32(player);
|
||||
SET_UNIPERIF_I2S_FMT_DATA_SIZE_32(player);
|
||||
break;
|
||||
case 16:
|
||||
SET_UNIPERIF_I2S_FMT_NBIT_16(player);
|
||||
SET_UNIPERIF_I2S_FMT_DATA_SIZE_16(player);
|
||||
break;
|
||||
default:
|
||||
dev_err(player->dev, "subframe format not supported");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* Configure data memory format */
|
||||
switch (runtime->format) {
|
||||
case SNDRV_PCM_FORMAT_S16_LE:
|
||||
/* One data word contains two samples */
|
||||
SET_UNIPERIF_CONFIG_MEM_FMT_16_16(player);
|
||||
break;
|
||||
|
||||
case SNDRV_PCM_FORMAT_S32_LE:
|
||||
/*
|
||||
* Actually "16 bits/0 bits" means "32/28/24/20/18/16 bits
|
||||
* on the left than zeros (if less than 32 bytes)"... ;-)
|
||||
*/
|
||||
SET_UNIPERIF_CONFIG_MEM_FMT_16_0(player);
|
||||
break;
|
||||
|
||||
default:
|
||||
dev_err(player->dev, "format not supported");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* Set rounding to off */
|
||||
SET_UNIPERIF_CTRL_ROUNDING_OFF(player);
|
||||
|
||||
/* Set clock divisor */
|
||||
SET_UNIPERIF_CTRL_DIVIDER(player, clk_div / (2 * output_frame_size));
|
||||
|
||||
/* Number of channelsmust be even*/
|
||||
if ((runtime->channels % 2) || (runtime->channels < 2) ||
|
||||
(runtime->channels > 10)) {
|
||||
dev_err(player->dev, "%s: invalid nb of channels", __func__);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
SET_UNIPERIF_I2S_FMT_NUM_CH(player, runtime->channels / 2);
|
||||
|
||||
/* Set 1-bit audio format to disabled */
|
||||
SET_UNIPERIF_CONFIG_ONE_BIT_AUD_DISABLE(player);
|
||||
|
||||
SET_UNIPERIF_I2S_FMT_ORDER_MSB(player);
|
||||
SET_UNIPERIF_I2S_FMT_SCLK_EDGE_FALLING(player);
|
||||
|
||||
/* No iec958 formatting as outputting to DAC */
|
||||
SET_UNIPERIF_CTRL_SPDIF_FMT_OFF(player);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int uni_player_set_sysclk(struct snd_soc_dai *dai, int clk_id,
|
||||
unsigned int freq, int dir)
|
||||
{
|
||||
struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
|
||||
struct uniperif *player = priv->dai_data.uni;
|
||||
|
||||
if (dir == SND_SOC_CLOCK_IN)
|
||||
return 0;
|
||||
|
||||
if (clk_id != 0)
|
||||
return -EINVAL;
|
||||
|
||||
player->mclk = freq;
|
||||
|
||||
return clk_set_rate(player->clk, freq);
|
||||
}
|
||||
|
||||
static int uni_player_prepare(struct snd_pcm_substream *substream,
|
||||
struct snd_soc_dai *dai)
|
||||
{
|
||||
struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
|
||||
struct uniperif *player = priv->dai_data.uni;
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
int transfer_size, trigger_limit;
|
||||
int ret;
|
||||
|
||||
/* The player should be stopped */
|
||||
if (player->state != UNIPERIF_STATE_STOPPED) {
|
||||
dev_err(player->dev, "%s: invalid player state %d", __func__,
|
||||
player->state);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* Calculate transfer size (in fifo cells and bytes) for frame count */
|
||||
transfer_size = runtime->channels * UNIPERIF_FIFO_FRAMES;
|
||||
|
||||
/* Calculate number of empty cells available before asserting DREQ */
|
||||
if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0) {
|
||||
trigger_limit = UNIPERIF_FIFO_SIZE - transfer_size;
|
||||
} else {
|
||||
/*
|
||||
* Since SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0
|
||||
* FDMA_TRIGGER_LIMIT also controls when the state switches
|
||||
* from OFF or STANDBY to AUDIO DATA.
|
||||
*/
|
||||
trigger_limit = transfer_size;
|
||||
}
|
||||
|
||||
/* Trigger limit must be an even number */
|
||||
if ((!trigger_limit % 2) || (trigger_limit != 1 && transfer_size % 2) ||
|
||||
(trigger_limit > UNIPERIF_CONFIG_DMA_TRIG_LIMIT_MASK(player))) {
|
||||
dev_err(player->dev, "invalid trigger limit %d", trigger_limit);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
SET_UNIPERIF_CONFIG_DMA_TRIG_LIMIT(player, trigger_limit);
|
||||
|
||||
/* Uniperipheral setup depends on player type */
|
||||
switch (player->info->player_type) {
|
||||
case SND_ST_UNIPERIF_PLAYER_TYPE_HDMI:
|
||||
ret = uni_player_prepare_iec958(player, runtime);
|
||||
break;
|
||||
case SND_ST_UNIPERIF_PLAYER_TYPE_PCM:
|
||||
ret = uni_player_prepare_pcm(player, runtime);
|
||||
break;
|
||||
case SND_ST_UNIPERIF_PLAYER_TYPE_SPDIF:
|
||||
ret = uni_player_prepare_iec958(player, runtime);
|
||||
break;
|
||||
default:
|
||||
dev_err(player->dev, "invalid player type");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
switch (player->daifmt & SND_SOC_DAIFMT_INV_MASK) {
|
||||
case SND_SOC_DAIFMT_NB_NF:
|
||||
SET_UNIPERIF_I2S_FMT_LR_POL_LOW(player);
|
||||
SET_UNIPERIF_I2S_FMT_SCLK_EDGE_RISING(player);
|
||||
break;
|
||||
case SND_SOC_DAIFMT_NB_IF:
|
||||
SET_UNIPERIF_I2S_FMT_LR_POL_HIG(player);
|
||||
SET_UNIPERIF_I2S_FMT_SCLK_EDGE_RISING(player);
|
||||
break;
|
||||
case SND_SOC_DAIFMT_IB_NF:
|
||||
SET_UNIPERIF_I2S_FMT_LR_POL_LOW(player);
|
||||
SET_UNIPERIF_I2S_FMT_SCLK_EDGE_FALLING(player);
|
||||
break;
|
||||
case SND_SOC_DAIFMT_IB_IF:
|
||||
SET_UNIPERIF_I2S_FMT_LR_POL_HIG(player);
|
||||
SET_UNIPERIF_I2S_FMT_SCLK_EDGE_FALLING(player);
|
||||
}
|
||||
|
||||
switch (player->daifmt & SND_SOC_DAIFMT_FORMAT_MASK) {
|
||||
case SND_SOC_DAIFMT_I2S:
|
||||
SET_UNIPERIF_I2S_FMT_ALIGN_LEFT(player);
|
||||
SET_UNIPERIF_I2S_FMT_PADDING_I2S_MODE(player);
|
||||
break;
|
||||
case SND_SOC_DAIFMT_LEFT_J:
|
||||
SET_UNIPERIF_I2S_FMT_ALIGN_LEFT(player);
|
||||
SET_UNIPERIF_I2S_FMT_PADDING_SONY_MODE(player);
|
||||
break;
|
||||
case SND_SOC_DAIFMT_RIGHT_J:
|
||||
SET_UNIPERIF_I2S_FMT_ALIGN_RIGHT(player);
|
||||
SET_UNIPERIF_I2S_FMT_PADDING_SONY_MODE(player);
|
||||
break;
|
||||
default:
|
||||
dev_err(player->dev, "format not supported");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
SET_UNIPERIF_I2S_FMT_NO_OF_SAMPLES_TO_READ(player, 0);
|
||||
|
||||
/* Reset uniperipheral player */
|
||||
SET_UNIPERIF_SOFT_RST_SOFT_RST(player);
|
||||
|
||||
return reset_player(player);
|
||||
}
|
||||
|
||||
static int uni_player_start(struct uniperif *player)
|
||||
{
|
||||
int ret;
|
||||
|
||||
/* The player should be stopped */
|
||||
if (player->state != UNIPERIF_STATE_STOPPED) {
|
||||
dev_err(player->dev, "%s: invalid player state", __func__);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
ret = clk_prepare_enable(player->clk);
|
||||
if (ret) {
|
||||
dev_err(player->dev, "%s: Failed to enable clock", __func__);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Clear any pending interrupts */
|
||||
SET_UNIPERIF_ITS_BCLR(player, GET_UNIPERIF_ITS(player));
|
||||
|
||||
/* Set the interrupt mask */
|
||||
SET_UNIPERIF_ITM_BSET_DMA_ERROR(player);
|
||||
SET_UNIPERIF_ITM_BSET_FIFO_ERROR(player);
|
||||
|
||||
/* Enable underflow recovery interrupts */
|
||||
if (player->info->underflow_enabled) {
|
||||
SET_UNIPERIF_ITM_BSET_UNDERFLOW_REC_DONE(player);
|
||||
SET_UNIPERIF_ITM_BSET_UNDERFLOW_REC_FAILED(player);
|
||||
}
|
||||
|
||||
/* Reset uniperipheral player */
|
||||
SET_UNIPERIF_SOFT_RST_SOFT_RST(player);
|
||||
|
||||
ret = reset_player(player);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
/*
|
||||
* Does not use IEC61937 features of the uniperipheral hardware.
|
||||
* Instead it performs IEC61937 in software and inserts it directly
|
||||
* into the audio data stream. As such, when encoded mode is selected,
|
||||
* linear pcm mode is still used, but with the differences of the
|
||||
* channel status bits set for encoded mode and the validity bits set.
|
||||
*/
|
||||
SET_UNIPERIF_CTRL_OPERATION_PCM_DATA(player);
|
||||
|
||||
/*
|
||||
* If iec958 formatting is required for hdmi or spdif, then it must be
|
||||
* enabled after the operation mode is set. If set prior to this, it
|
||||
* will not take affect and hang the player.
|
||||
*/
|
||||
if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0)
|
||||
if (UNIPERIF_PLAYER_TYPE_IS_IEC958(player))
|
||||
SET_UNIPERIF_CTRL_SPDIF_FMT_ON(player);
|
||||
|
||||
/* Force channel status update (no update if clk disable) */
|
||||
if (player->ver < SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0)
|
||||
SET_UNIPERIF_CONFIG_CHL_STS_UPDATE(player);
|
||||
else
|
||||
SET_UNIPERIF_BIT_CONTROL_CHL_STS_UPDATE(player);
|
||||
|
||||
/* Update state to started */
|
||||
player->state = UNIPERIF_STATE_STARTED;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int uni_player_stop(struct uniperif *player)
|
||||
{
|
||||
int ret;
|
||||
|
||||
/* The player should not be in stopped state */
|
||||
if (player->state == UNIPERIF_STATE_STOPPED) {
|
||||
dev_err(player->dev, "%s: invalid player state", __func__);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* Turn the player off */
|
||||
SET_UNIPERIF_CTRL_OPERATION_OFF(player);
|
||||
|
||||
/* Soft reset the player */
|
||||
SET_UNIPERIF_SOFT_RST_SOFT_RST(player);
|
||||
|
||||
ret = reset_player(player);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
/* Disable interrupts */
|
||||
SET_UNIPERIF_ITM_BCLR(player, GET_UNIPERIF_ITM(player));
|
||||
|
||||
/* Disable clock */
|
||||
clk_disable_unprepare(player->clk);
|
||||
|
||||
/* Update state to stopped and return */
|
||||
player->state = UNIPERIF_STATE_STOPPED;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int uni_player_resume(struct uniperif *player)
|
||||
{
|
||||
int ret;
|
||||
|
||||
/* Select the frequency synthesizer clock */
|
||||
if (player->clk_sel) {
|
||||
ret = regmap_field_write(player->clk_sel, 1);
|
||||
if (ret) {
|
||||
dev_err(player->dev,
|
||||
"%s: Failed to select freq synth clock",
|
||||
__func__);
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
||||
SET_UNIPERIF_CONFIG_BACK_STALL_REQ_DISABLE(player);
|
||||
SET_UNIPERIF_CTRL_ROUNDING_OFF(player);
|
||||
SET_UNIPERIF_CTRL_SPDIF_LAT_OFF(player);
|
||||
SET_UNIPERIF_CONFIG_IDLE_MOD_DISABLE(player);
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(uni_player_resume);
|
||||
|
||||
static int uni_player_trigger(struct snd_pcm_substream *substream,
|
||||
int cmd, struct snd_soc_dai *dai)
|
||||
{
|
||||
struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
|
||||
struct uniperif *player = priv->dai_data.uni;
|
||||
|
||||
switch (cmd) {
|
||||
case SNDRV_PCM_TRIGGER_START:
|
||||
return uni_player_start(player);
|
||||
case SNDRV_PCM_TRIGGER_STOP:
|
||||
return uni_player_stop(player);
|
||||
case SNDRV_PCM_TRIGGER_RESUME:
|
||||
return uni_player_resume(player);
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
static void uni_player_shutdown(struct snd_pcm_substream *substream,
|
||||
struct snd_soc_dai *dai)
|
||||
{
|
||||
struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
|
||||
struct uniperif *player = priv->dai_data.uni;
|
||||
|
||||
if (player->state != UNIPERIF_STATE_STOPPED)
|
||||
/* Stop the player */
|
||||
uni_player_stop(player);
|
||||
}
|
||||
|
||||
static int uni_player_parse_dt_clk_glue(struct platform_device *pdev,
|
||||
struct uniperif *player)
|
||||
{
|
||||
int bit_offset;
|
||||
struct device_node *node = pdev->dev.of_node;
|
||||
struct regmap *regmap;
|
||||
|
||||
bit_offset = SYS_CFG_AUDI0_GLUE_PCM_CLKX + player->info->id;
|
||||
|
||||
regmap = syscon_regmap_lookup_by_phandle(node, "st,syscfg");
|
||||
|
||||
if (regmap) {
|
||||
struct reg_field regfield =
|
||||
REG_FIELD(SYS_CFG_AUDIO_GLUE, bit_offset, bit_offset);
|
||||
|
||||
player->clk_sel = regmap_field_alloc(regmap, regfield);
|
||||
} else {
|
||||
dev_err(&pdev->dev, "sti-audio-clk-glue syscf not found\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int uni_player_parse_dt(struct platform_device *pdev,
|
||||
struct uniperif *player)
|
||||
{
|
||||
struct uniperif_info *info;
|
||||
struct device *dev = &pdev->dev;
|
||||
struct device_node *pnode = pdev->dev.of_node;
|
||||
const char *mode;
|
||||
|
||||
/* Allocate memory for the info structure */
|
||||
info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
|
||||
if (!info)
|
||||
return -ENOMEM;
|
||||
|
||||
of_property_read_u32(pnode, "version", &player->ver);
|
||||
if (player->ver == SND_ST_UNIPERIF_VERSION_UNKNOWN) {
|
||||
dev_err(dev, "Unknown uniperipheral version ");
|
||||
return -EINVAL;
|
||||
}
|
||||
/* Underflow recovery is only supported on later ip revisions */
|
||||
if (player->ver >= SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0)
|
||||
info->underflow_enabled = 1;
|
||||
|
||||
of_property_read_u32(pnode, "uniperiph-id", &info->id);
|
||||
|
||||
/* Read the device mode property */
|
||||
of_property_read_string(pnode, "mode", &mode);
|
||||
|
||||
if (strcasecmp(mode, "hdmi") == 0)
|
||||
info->player_type = SND_ST_UNIPERIF_PLAYER_TYPE_HDMI;
|
||||
else if (strcasecmp(mode, "pcm") == 0)
|
||||
info->player_type = SND_ST_UNIPERIF_PLAYER_TYPE_PCM;
|
||||
else if (strcasecmp(mode, "spdif") == 0)
|
||||
info->player_type = SND_ST_UNIPERIF_PLAYER_TYPE_SPDIF;
|
||||
else
|
||||
info->player_type = SND_ST_UNIPERIF_PLAYER_TYPE_NONE;
|
||||
|
||||
/* Save the info structure */
|
||||
player->info = info;
|
||||
|
||||
/* Get the PCM_CLK_SEL bit from audio-glue-ctrl SoC register */
|
||||
if (uni_player_parse_dt_clk_glue(pdev, player))
|
||||
return -EINVAL;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
const struct snd_soc_dai_ops uni_player_dai_ops = {
|
||||
.shutdown = uni_player_shutdown,
|
||||
.prepare = uni_player_prepare,
|
||||
.trigger = uni_player_trigger,
|
||||
.hw_params = sti_uniperiph_dai_hw_params,
|
||||
.set_fmt = sti_uniperiph_dai_set_fmt,
|
||||
.set_sysclk = uni_player_set_sysclk
|
||||
};
|
||||
|
||||
int uni_player_init(struct platform_device *pdev,
|
||||
struct uniperif *player)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
player->dev = &pdev->dev;
|
||||
player->state = UNIPERIF_STATE_STOPPED;
|
||||
player->hw = &uni_player_pcm_hw;
|
||||
player->dai_ops = &uni_player_dai_ops;
|
||||
|
||||
ret = uni_player_parse_dt(pdev, player);
|
||||
|
||||
if (ret < 0) {
|
||||
dev_err(player->dev, "Failed to parse DeviceTree");
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Get uniperif resource */
|
||||
player->clk = of_clk_get(pdev->dev.of_node, 0);
|
||||
if (IS_ERR(player->clk))
|
||||
ret = (int)PTR_ERR(player->clk);
|
||||
|
||||
/* Select the frequency synthesizer clock */
|
||||
if (player->clk_sel) {
|
||||
ret = regmap_field_write(player->clk_sel, 1);
|
||||
if (ret) {
|
||||
dev_err(player->dev,
|
||||
"%s: Failed to select freq synth clock",
|
||||
__func__);
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
||||
ret = devm_request_irq(&pdev->dev, player->irq,
|
||||
uni_player_irq_handler, IRQF_SHARED,
|
||||
dev_name(&pdev->dev), player);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
/* Ensure that disabled by default */
|
||||
SET_UNIPERIF_CONFIG_BACK_STALL_REQ_DISABLE(player);
|
||||
SET_UNIPERIF_CTRL_ROUNDING_OFF(player);
|
||||
SET_UNIPERIF_CTRL_SPDIF_LAT_OFF(player);
|
||||
SET_UNIPERIF_CONFIG_IDLE_MOD_DISABLE(player);
|
||||
|
||||
if (UNIPERIF_PLAYER_TYPE_IS_IEC958(player)) {
|
||||
/* Set default iec958 status bits */
|
||||
|
||||
/* Consumer, PCM, copyright, 2ch, mode 0 */
|
||||
player->stream_settings.iec958.status[0] = 0x00;
|
||||
/* Broadcast reception category */
|
||||
player->stream_settings.iec958.status[1] =
|
||||
IEC958_AES1_CON_GENERAL;
|
||||
/* Do not take into account source or channel number */
|
||||
player->stream_settings.iec958.status[2] =
|
||||
IEC958_AES2_CON_SOURCE_UNSPEC;
|
||||
/* Sampling frequency not indicated */
|
||||
player->stream_settings.iec958.status[3] =
|
||||
IEC958_AES3_CON_FS_NOTID;
|
||||
/* Max sample word 24-bit, sample word length not indicated */
|
||||
player->stream_settings.iec958.status[4] =
|
||||
IEC958_AES4_CON_MAX_WORDLEN_24 |
|
||||
IEC958_AES4_CON_WORDLEN_24_20;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(uni_player_init);
|
||||
Loading…
Reference in New Issue