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Merge remote-tracking branch 'asoc/topic/sti' into asoc-next

This commit is contained in:
Mark Brown 2016-05-27 13:45:55 +01:00
parent 38e3c63da3 ee4c879b53
commit 77c92d2b4c
5 changed files with 687 additions and 136 deletions
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48
Documentation/devicetree/bindings/sound/st,sti-asoc-card.txt
View File

@ -37,17 +37,18 @@ Required properties:
- dai-name: DAI name that describes the IP.
- IP mode: IP working mode depending on associated codec.
"HDMI" connected to HDMI codec and support IEC HDMI formats (player only).
"SPDIF" connected to SPDIF codec and support SPDIF formats (player only).
"PCM" PCM standard mode for I2S or TDM bus.
"TDM" TDM mode for TDM bus.
Required properties ("st,sti-uni-player" compatibility only):
- clocks: CPU_DAI IP clock source, listed in the same order than the
CPU_DAI properties.
- uniperiph-id: internal SOC IP instance ID.
- IP mode: IP working mode depending on associated codec.
"HDMI" connected to HDMI codec IP and IEC HDMI formats.
"SPDIF"connected to SPDIF codec and support SPDIF formats.
"PCM" PCM standard mode for I2S or TDM bus.
Optional properties:
- pinctrl-0: defined for CPU_DAI@1 and CPU_DAI@4 to describe I2S PIOs for
external codecs connection.
@ -56,6 +57,22 @@ Optional properties:
Example:
sti_uni_player1: sti-uni-player@1 {
compatible = "st,sti-uni-player";
status = "okay";
#sound-dai-cells = <0>;
st,syscfg = <&syscfg_core>;
clocks = <&clk_s_d0_flexgen CLK_PCM_1>;
reg = <0x8D81000 0x158>;
interrupts = <GIC_SPI 85 IRQ_TYPE_NONE>;
dmas = <&fdma0 3 0 1>;
st,dai-name = "Uni Player #1 (I2S)";
dma-names = "tx";
st,uniperiph-id = <1>;
st,version = <5>;
st,mode = "TDM";
};
sti_uni_player2: sti-uni-player@2 {
compatible = "st,sti-uni-player";
status = "okay";
@ -65,7 +82,7 @@ Example:
reg = <0x8D82000 0x158>;
interrupts = <GIC_SPI 86 IRQ_TYPE_NONE>;
dmas = <&fdma0 4 0 1>;
dai-name = "Uni Player #1 (DAC)";
dai-name = "Uni Player #2 (DAC)";
dma-names = "tx";
uniperiph-id = <2>;
version = <5>;
@ -82,7 +99,7 @@ Example:
interrupts = <GIC_SPI 89 IRQ_TYPE_NONE>;
dmas = <&fdma0 7 0 1>;
dma-names = "tx";
dai-name = "Uni Player #1 (PIO)";
dai-name = "Uni Player #3 (SPDIF)";
uniperiph-id = <3>;
version = <5>;
mode = "SPDIF";
@ -99,6 +116,7 @@ Example:
dma-names = "rx";
dai-name = "Uni Reader #1 (HDMI RX)";
version = <3>;
st,mode = "PCM";
};
2) sti-sas-codec: internal audio codec IPs driver
@ -152,4 +170,20 @@ Example of audio card declaration:
sound-dai = <&sti_sasg_codec 0>;
};
};
simple-audio-card,dai-link@2 {
/* TDM playback */
format = "left_j";
frame-inversion = <1>;
cpu {
sound-dai = <&sti_uni_player1>;
dai-tdm-slot-num = <16>;
dai-tdm-slot-width = <16>;
dai-tdm-slot-tx-mask =
<1 1 1 1 0 0 0 0 0 0 1 1 0 0 1 1>;
};
codec {
sound-dai = <&sti_sasg_codec 3>;
};
};
};

144
sound/soc/sti/sti_uniperif.c
View File

@ -10,6 +10,142 @@
#include "uniperif.h"
/*
* User frame size shall be 2, 4, 6 or 8 32-bits words length
* (i.e. 8, 16, 24 or 32 bytes)
* This constraint comes from allowed values for
* UNIPERIF_I2S_FMT_NUM_CH register
*/
#define UNIPERIF_MAX_FRAME_SZ 0x20
#define UNIPERIF_ALLOWED_FRAME_SZ (0x08 | 0x10 | 0x18 | UNIPERIF_MAX_FRAME_SZ)
int sti_uniperiph_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
unsigned int rx_mask, int slots,
int slot_width)
{
struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
struct uniperif *uni = priv->dai_data.uni;
int i, frame_size, avail_slots;
if (!UNIPERIF_TYPE_IS_TDM(uni)) {
dev_err(uni->dev, "cpu dai not in tdm mode\n");
return -EINVAL;
}
/* store info in unip context */
uni->tdm_slot.slots = slots;
uni->tdm_slot.slot_width = slot_width;
/* unip is unidirectionnal */
uni->tdm_slot.mask = (tx_mask != 0) ? tx_mask : rx_mask;
/* number of available timeslots */
for (i = 0, avail_slots = 0; i < uni->tdm_slot.slots; i++) {
if ((uni->tdm_slot.mask >> i) & 0x01)
avail_slots++;
}
uni->tdm_slot.avail_slots = avail_slots;
/* frame size in bytes */
frame_size = uni->tdm_slot.avail_slots * uni->tdm_slot.slot_width / 8;
/* check frame size is allowed */
if ((frame_size > UNIPERIF_MAX_FRAME_SZ) ||
(frame_size & ~(int)UNIPERIF_ALLOWED_FRAME_SZ)) {
dev_err(uni->dev, "frame size not allowed: %d bytes\n",
frame_size);
return -EINVAL;
}
return 0;
}
int sti_uniperiph_fix_tdm_chan(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
struct uniperif *uni = rule->private;
struct snd_interval t;
t.min = uni->tdm_slot.avail_slots;
t.max = uni->tdm_slot.avail_slots;
t.openmin = 0;
t.openmax = 0;
t.integer = 0;
return snd_interval_refine(hw_param_interval(params, rule->var), &t);
}
int sti_uniperiph_fix_tdm_format(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
struct uniperif *uni = rule->private;
struct snd_mask *maskp = hw_param_mask(params, rule->var);
u64 format;
switch (uni->tdm_slot.slot_width) {
case 16:
format = SNDRV_PCM_FMTBIT_S16_LE;
break;
case 32:
format = SNDRV_PCM_FMTBIT_S32_LE;
break;
default:
dev_err(uni->dev, "format not supported: %d bits\n",
uni->tdm_slot.slot_width);
return -EINVAL;
}
maskp->bits[0] &= (u_int32_t)format;
maskp->bits[1] &= (u_int32_t)(format >> 32);
/* clear remaining indexes */
memset(maskp->bits + 2, 0, (SNDRV_MASK_MAX - 64) / 8);
if (!maskp->bits[0] && !maskp->bits[1])
return -EINVAL;
return 0;
}
int sti_uniperiph_get_tdm_word_pos(struct uniperif *uni,
unsigned int *word_pos)
{
int slot_width = uni->tdm_slot.slot_width / 8;
int slots_num = uni->tdm_slot.slots;
unsigned int slots_mask = uni->tdm_slot.mask;
int i, j, k;
unsigned int word16_pos[4];
/* word16_pos:
* word16_pos[0] = WORDX_LSB
* word16_pos[1] = WORDX_MSB,
* word16_pos[2] = WORDX+1_LSB
* word16_pos[3] = WORDX+1_MSB
*/
/* set unip word position */
for (i = 0, j = 0, k = 0; (i < slots_num) && (k < WORD_MAX); i++) {
if ((slots_mask >> i) & 0x01) {
word16_pos[j] = i * slot_width;
if (slot_width == 4) {
word16_pos[j + 1] = word16_pos[j] + 2;
j++;
}
j++;
if (j > 3) {
word_pos[k] = word16_pos[1] |
(word16_pos[0] << 8) |
(word16_pos[3] << 16) |
(word16_pos[2] << 24);
j = 0;
k++;
}
}
}
return 0;
}
/*
* sti_uniperiph_dai_create_ctrl
* This function is used to create Ctrl associated to DAI but also pcm device.
@ -45,10 +181,16 @@ int sti_uniperiph_dai_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
struct uniperif *uni = priv->dai_data.uni;
struct snd_dmaengine_dai_dma_data *dma_data;
int transfer_size;
transfer_size = params_channels(params) * UNIPERIF_FIFO_FRAMES;
if (uni->info->type == SND_ST_UNIPERIF_TYPE_TDM)
/* transfer size = user frame size (in 32-bits FIFO cell) */
transfer_size = snd_soc_params_to_frame_size(params) / 32;
else
transfer_size = params_channels(params) * UNIPERIF_FIFO_FRAMES;
dma_data = snd_soc_dai_get_dma_data(dai, substream);
dma_data->maxburst = transfer_size;

220
sound/soc/sti/uniperif.h
View File

@ -25,7 +25,7 @@
writel_relaxed((((value) & mask) << shift), ip->base + offset)
/*
* AUD_UNIPERIF_SOFT_RST reg
* UNIPERIF_SOFT_RST reg
*/
#define UNIPERIF_SOFT_RST_OFFSET(ip) 0x0000
@ -50,7 +50,7 @@
UNIPERIF_SOFT_RST_SOFT_RST_MASK(ip))
/*
* AUD_UNIPERIF_FIFO_DATA reg
* UNIPERIF_FIFO_DATA reg
*/
#define UNIPERIF_FIFO_DATA_OFFSET(ip) 0x0004
@ -58,7 +58,7 @@
writel_relaxed(value, ip->base + UNIPERIF_FIFO_DATA_OFFSET(ip))
/*
* AUD_UNIPERIF_CHANNEL_STA_REGN reg
* UNIPERIF_CHANNEL_STA_REGN reg
*/
#define UNIPERIF_CHANNEL_STA_REGN(ip, n) (0x0060 + (4 * n))
@ -105,7 +105,7 @@
writel_relaxed(value, ip->base + UNIPERIF_CHANNEL_STA_REG5_OFFSET(ip))
/*
* AUD_UNIPERIF_ITS reg
* UNIPERIF_ITS reg
*/
#define UNIPERIF_ITS_OFFSET(ip) 0x000C
@ -143,7 +143,7 @@
0 : (BIT(UNIPERIF_ITS_UNDERFLOW_REC_FAILED_SHIFT(ip))))
/*
* AUD_UNIPERIF_ITS_BCLR reg
* UNIPERIF_ITS_BCLR reg
*/
/* FIFO_ERROR */
@ -160,7 +160,7 @@
writel_relaxed(value, ip->base + UNIPERIF_ITS_BCLR_OFFSET(ip))
/*
* AUD_UNIPERIF_ITM reg
* UNIPERIF_ITM reg
*/
#define UNIPERIF_ITM_OFFSET(ip) 0x0018
@ -188,7 +188,7 @@
0 : (BIT(UNIPERIF_ITM_UNDERFLOW_REC_FAILED_SHIFT(ip))))
/*
* AUD_UNIPERIF_ITM_BCLR reg
* UNIPERIF_ITM_BCLR reg
*/
#define UNIPERIF_ITM_BCLR_OFFSET(ip) 0x001c
@ -213,7 +213,7 @@
UNIPERIF_ITM_BCLR_DMA_ERROR_MASK(ip))
/*
* AUD_UNIPERIF_ITM_BSET reg
* UNIPERIF_ITM_BSET reg
*/
#define UNIPERIF_ITM_BSET_OFFSET(ip) 0x0020
@ -767,7 +767,7 @@
SET_UNIPERIF_REG(ip, \
UNIPERIF_CTRL_OFFSET(ip), \
UNIPERIF_CTRL_READER_OUT_SEL_SHIFT(ip), \
CORAUD_UNIPERIF_CTRL_READER_OUT_SEL_MASK(ip), 1)
UNIPERIF_CTRL_READER_OUT_SEL_MASK(ip), 1)
/* UNDERFLOW_REC_WINDOW */
#define UNIPERIF_CTRL_UNDERFLOW_REC_WINDOW_SHIFT(ip) 20
@ -1046,7 +1046,7 @@
UNIPERIF_STATUS_1_UNDERFLOW_DURATION_MASK(ip), value)
/*
* AUD_UNIPERIF_CHANNEL_STA_REGN reg
* UNIPERIF_CHANNEL_STA_REGN reg
*/
#define UNIPERIF_CHANNEL_STA_REGN(ip, n) (0x0060 + (4 * n))
@ -1057,7 +1057,7 @@
UNIPERIF_CHANNEL_STA_REGN(ip, n))
/*
* AUD_UNIPERIF_USER_VALIDITY reg
* UNIPERIF_USER_VALIDITY reg
*/
#define UNIPERIF_USER_VALIDITY_OFFSET(ip) 0x0090
@ -1100,6 +1100,118 @@
UNIPERIF_DBG_STANDBY_LEFT_SP_SHIFT(ip), \
UNIPERIF_DBG_STANDBY_LEFT_SP_MASK(ip), value)
/*
* UNIPERIF_TDM_ENABLE
*/
#define UNIPERIF_TDM_ENABLE_OFFSET(ip) 0x0118
#define GET_UNIPERIF_TDM_ENABLE(ip) \
readl_relaxed(ip->base + UNIPERIF_TDM_ENABLE_OFFSET(ip))
#define SET_UNIPERIF_TDM_ENABLE(ip, value) \
writel_relaxed(value, ip->base + UNIPERIF_TDM_ENABLE_OFFSET(ip))
/* TDM_ENABLE */
#define UNIPERIF_TDM_ENABLE_EN_TDM_SHIFT(ip) 0x0
#define UNIPERIF_TDM_ENABLE_EN_TDM_MASK(ip) 0x1
#define GET_UNIPERIF_TDM_ENABLE_EN_TDM(ip) \
GET_UNIPERIF_REG(ip, \
UNIPERIF_TDM_ENABLE_OFFSET(ip), \
UNIPERIF_TDM_ENABLE_EN_TDM_SHIFT(ip), \
UNIPERIF_TDM_ENABLE_EN_TDM_MASK(ip))
#define SET_UNIPERIF_TDM_ENABLE_TDM_ENABLE(ip) \
SET_UNIPERIF_REG(ip, \
UNIPERIF_TDM_ENABLE_OFFSET(ip), \
UNIPERIF_TDM_ENABLE_EN_TDM_SHIFT(ip), \
UNIPERIF_TDM_ENABLE_EN_TDM_MASK(ip), 1)
#define SET_UNIPERIF_TDM_ENABLE_TDM_DISABLE(ip) \
SET_UNIPERIF_REG(ip, \
UNIPERIF_TDM_ENABLE_OFFSET(ip), \
UNIPERIF_TDM_ENABLE_EN_TDM_SHIFT(ip), \
UNIPERIF_TDM_ENABLE_EN_TDM_MASK(ip), 0)
/*
* UNIPERIF_TDM_FS_REF_FREQ
*/
#define UNIPERIF_TDM_FS_REF_FREQ_OFFSET(ip) 0x011c
#define GET_UNIPERIF_TDM_FS_REF_FREQ(ip) \
readl_relaxed(ip->base + UNIPERIF_TDM_FS_REF_FREQ_OFFSET(ip))
#define SET_UNIPERIF_TDM_FS_REF_FREQ(ip, value) \
writel_relaxed(value, ip->base + \
UNIPERIF_TDM_FS_REF_FREQ_OFFSET(ip))
/* REF_FREQ */
#define UNIPERIF_TDM_FS_REF_FREQ_REF_FREQ_SHIFT(ip) 0x0
#define VALUE_UNIPERIF_TDM_FS_REF_FREQ_8KHZ(ip) 0
#define VALUE_UNIPERIF_TDM_FS_REF_FREQ_16KHZ(ip) 1
#define VALUE_UNIPERIF_TDM_FS_REF_FREQ_32KHZ(ip) 2
#define VALUE_UNIPERIF_TDM_FS_REF_FREQ_48KHZ(ip) 3
#define UNIPERIF_TDM_FS_REF_FREQ_REF_FREQ_MASK(ip) 0x3
#define GET_UNIPERIF_TDM_FS_REF_FREQ_REF_FREQ(ip) \
GET_UNIPERIF_REG(ip, \
UNIPERIF_TDM_FS_REF_FREQ_OFFSET(ip), \
UNIPERIF_TDM_FS_REF_FREQ_REF_FREQ_SHIFT(ip), \
UNIPERIF_TDM_FS_REF_FREQ_REF_FREQ_MASK(ip))
#define SET_UNIPERIF_TDM_FS_REF_FREQ_8KHZ(ip) \
SET_UNIPERIF_REG(ip, \
UNIPERIF_TDM_FS_REF_FREQ_OFFSET(ip), \
UNIPERIF_TDM_FS_REF_FREQ_REF_FREQ_SHIFT(ip), \
UNIPERIF_TDM_FS_REF_FREQ_REF_FREQ_MASK(ip), \
VALUE_UNIPERIF_TDM_FS_REF_FREQ_8KHZ(ip))
#define SET_UNIPERIF_TDM_FS_REF_FREQ_16KHZ(ip) \
SET_UNIPERIF_REG(ip, \
UNIPERIF_TDM_FS_REF_FREQ_OFFSET(ip), \
UNIPERIF_TDM_FS_REF_FREQ_REF_FREQ_SHIFT(ip), \
UNIPERIF_TDM_FS_REF_FREQ_REF_FREQ_MASK(ip), \
VALUE_UNIPERIF_TDM_FS_REF_FREQ_16KHZ(ip))
#define SET_UNIPERIF_TDM_FS_REF_FREQ_32KHZ(ip) \
SET_UNIPERIF_REG(ip, \
UNIPERIF_TDM_FS_REF_FREQ_OFFSET(ip), \
UNIPERIF_TDM_FS_REF_FREQ_REF_FREQ_SHIFT(ip), \
UNIPERIF_TDM_FS_REF_FREQ_REF_FREQ_MASK(ip), \
VALUE_UNIPERIF_TDM_FS_REF_FREQ_32KHZ(ip))
#define SET_UNIPERIF_TDM_FS_REF_FREQ_48KHZ(ip) \
SET_UNIPERIF_REG(ip, \
UNIPERIF_TDM_FS_REF_FREQ_OFFSET(ip), \
UNIPERIF_TDM_FS_REF_FREQ_REF_FREQ_SHIFT(ip), \
UNIPERIF_TDM_FS_REF_FREQ_REF_FREQ_MASK(ip), \
VALUE_UNIPERIF_TDM_FS_REF_FREQ_48KHZ(ip))
/*
* UNIPERIF_TDM_FS_REF_DIV
*/
#define UNIPERIF_TDM_FS_REF_DIV_OFFSET(ip) 0x0120
#define GET_UNIPERIF_TDM_FS_REF_DIV(ip) \
readl_relaxed(ip->base + UNIPERIF_TDM_FS_REF_DIV_OFFSET(ip))
#define SET_UNIPERIF_TDM_FS_REF_DIV(ip, value) \
writel_relaxed(value, ip->base + \
UNIPERIF_TDM_FS_REF_DIV_OFFSET(ip))
/* NUM_TIMESLOT */
#define UNIPERIF_TDM_FS_REF_DIV_NUM_TIMESLOT_SHIFT(ip) 0x0
#define UNIPERIF_TDM_FS_REF_DIV_NUM_TIMESLOT_MASK(ip) 0xff
#define GET_UNIPERIF_TDM_FS_REF_DIV_NUM_TIMESLOT(ip) \
GET_UNIPERIF_REG(ip, \
UNIPERIF_TDM_FS_REF_DIV_OFFSET(ip), \
UNIPERIF_TDM_FS_REF_DIV_NUM_TIMESLOT_SHIFT(ip), \
UNIPERIF_TDM_FS_REF_DIV_NUM_TIMESLOT_MASK(ip))
#define SET_UNIPERIF_TDM_FS_REF_DIV_NUM_TIMESLOT(ip, value) \
SET_UNIPERIF_REG(ip, \
UNIPERIF_TDM_FS_REF_DIV_OFFSET(ip), \
UNIPERIF_TDM_FS_REF_DIV_NUM_TIMESLOT_SHIFT(ip), \
UNIPERIF_TDM_FS_REF_DIV_NUM_TIMESLOT_MASK(ip), value)
/*
* UNIPERIF_TDM_WORD_POS_X_Y
* 32 bits of UNIPERIF_TDM_WORD_POS_X_Y register shall be set in 1 shot
*/
#define UNIPERIF_TDM_WORD_POS_1_2_OFFSET(ip) 0x013c
#define UNIPERIF_TDM_WORD_POS_3_4_OFFSET(ip) 0x0140
#define UNIPERIF_TDM_WORD_POS_5_6_OFFSET(ip) 0x0144
#define UNIPERIF_TDM_WORD_POS_7_8_OFFSET(ip) 0x0148
#define GET_UNIPERIF_TDM_WORD_POS(ip, words) \
readl_relaxed(ip->base + UNIPERIF_TDM_WORD_POS_##words##_OFFSET(ip))
#define SET_UNIPERIF_TDM_WORD_POS(ip, words, value) \
writel_relaxed(value, ip->base + \
UNIPERIF_TDM_WORD_POS_##words##_OFFSET(ip))
/*
* uniperipheral IP capabilities
*/
@ -1107,6 +1219,18 @@
#define UNIPERIF_FIFO_SIZE 70 /* FIFO is 70 cells deep */
#define UNIPERIF_FIFO_FRAMES 4 /* FDMA trigger limit in frames */
#define UNIPERIF_TYPE_IS_HDMI(p) \
((p)->info->type == SND_ST_UNIPERIF_TYPE_HDMI)
#define UNIPERIF_TYPE_IS_PCM(p) \
((p)->info->type == SND_ST_UNIPERIF_TYPE_PCM)
#define UNIPERIF_TYPE_IS_SPDIF(p) \
((p)->info->type == SND_ST_UNIPERIF_TYPE_SPDIF)
#define UNIPERIF_TYPE_IS_IEC958(p) \
(UNIPERIF_TYPE_IS_HDMI(p) || \
UNIPERIF_TYPE_IS_SPDIF(p))
#define UNIPERIF_TYPE_IS_TDM(p) \
((p)->info->type == SND_ST_UNIPERIF_TYPE_TDM)
/*
* Uniperipheral IP revisions
*/
@ -1125,10 +1249,11 @@ enum uniperif_version {
};
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
SND_ST_UNIPERIF_TYPE_NONE,
SND_ST_UNIPERIF_TYPE_HDMI,
SND_ST_UNIPERIF_TYPE_PCM,
SND_ST_UNIPERIF_TYPE_SPDIF,
SND_ST_UNIPERIF_TYPE_TDM
};
enum uniperif_state {
@ -1145,9 +1270,17 @@ enum uniperif_iec958_encoding_mode {
UNIPERIF_IEC958_ENCODING_MODE_ENCODED
};
enum uniperif_word_pos {
WORD_1_2,
WORD_3_4,
WORD_5_6,
WORD_7_8,
WORD_MAX
};
struct uniperif_info {
int id; /* instance value of the uniperipheral IP */
enum uniperif_type player_type;
enum uniperif_type type;
int underflow_enabled; /* Underflow recovery mode */
};
@ -1156,12 +1289,20 @@ struct uniperif_iec958_settings {
struct snd_aes_iec958 iec958;
};
struct dai_tdm_slot {
unsigned int mask;
int slots;
int slot_width;
unsigned int avail_slots;
};
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;
struct regmap_field *valid_sel;
/* capabilities */
const struct snd_pcm_hardware *hw;
@ -1192,6 +1333,7 @@ struct uniperif {
/* dai properties */
unsigned int daifmt;
struct dai_tdm_slot tdm_slot;
/* DAI callbacks */
const struct snd_soc_dai_ops *dai_ops;
@ -1209,6 +1351,28 @@ struct sti_uniperiph_data {
struct sti_uniperiph_dai dai_data;
};
static const struct snd_pcm_hardware uni_tdm_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 = 48000,
.channels_min = 1,
.channels_max = 32,
.periods_min = 2,
.periods_max = 10,
.period_bytes_min = 128,
.period_bytes_max = 64 * PAGE_SIZE,
.buffer_bytes_max = 256 * PAGE_SIZE
};
/* uniperiph player*/
int uni_player_init(struct platform_device *pdev,
struct uniperif *uni_player);
@ -1226,4 +1390,28 @@ int sti_uniperiph_dai_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai);
static inline int sti_uniperiph_get_user_frame_size(
struct snd_pcm_runtime *runtime)
{
return (runtime->channels * snd_pcm_format_width(runtime->format) / 8);
}
static inline int sti_uniperiph_get_unip_tdm_frame_size(struct uniperif *uni)
{
return (uni->tdm_slot.slots * uni->tdm_slot.slot_width / 8);
}
int sti_uniperiph_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
unsigned int rx_mask, int slots,
int slot_width);
int sti_uniperiph_get_tdm_word_pos(struct uniperif *uni,
unsigned int *word_pos);
int sti_uniperiph_fix_tdm_chan(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule);
int sti_uniperiph_fix_tdm_format(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule);
#endif

182
sound/soc/sti/uniperif_player.c
View File

@ -21,23 +21,14 @@
/* 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))
#define UNIPERIF_PLAYER_CLK_ADJ_MIN -999999
#define UNIPERIF_PLAYER_CLK_ADJ_MAX 1000000
#define UNIPERIF_PLAYER_I2S_OUT 1 /* player id connected to I2S/TDM TX bus */
/*
* Note: snd_pcm_hardware is linked to DMA controller but is declared here to
@ -444,18 +435,11 @@ static int uni_player_prepare_pcm(struct uniperif *player,
/* Force slot width to 32 in I2S mode (HW constraint) */
if ((player->daifmt & SND_SOC_DAIFMT_FORMAT_MASK) ==
SND_SOC_DAIFMT_I2S) {
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;
}
}
else
slot_width = snd_pcm_format_width(runtime->format);
output_frame_size = slot_width * runtime->channels;
clk_div = player->mclk / runtime->rate;
@ -530,7 +514,6 @@ static int uni_player_prepare_pcm(struct uniperif *player,
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);
@ -538,6 +521,55 @@ static int uni_player_prepare_pcm(struct uniperif *player,
return 0;
}
static int uni_player_prepare_tdm(struct uniperif *player,
struct snd_pcm_runtime *runtime)
{
int tdm_frame_size; /* unip tdm frame size in bytes */
int user_frame_size; /* user tdm frame size in bytes */
/* default unip TDM_WORD_POS_X_Y */
unsigned int word_pos[4] = {
0x04060002, 0x0C0E080A, 0x14161012, 0x1C1E181A};
int freq, ret;
tdm_frame_size =
sti_uniperiph_get_unip_tdm_frame_size(player);
user_frame_size =
sti_uniperiph_get_user_frame_size(runtime);
/* fix 16/0 format */
SET_UNIPERIF_CONFIG_MEM_FMT_16_0(player);
SET_UNIPERIF_I2S_FMT_DATA_SIZE_32(player);
/* number of words inserted on the TDM line */
SET_UNIPERIF_I2S_FMT_NUM_CH(player, user_frame_size / 4 / 2);
SET_UNIPERIF_I2S_FMT_ORDER_MSB(player);
SET_UNIPERIF_I2S_FMT_ALIGN_LEFT(player);
/* Enable the tdm functionality */
SET_UNIPERIF_TDM_ENABLE_TDM_ENABLE(player);
/* number of 8 bits timeslots avail in unip tdm frame */
SET_UNIPERIF_TDM_FS_REF_DIV_NUM_TIMESLOT(player, tdm_frame_size);
/* set the timeslot allocation for words in FIFO */
sti_uniperiph_get_tdm_word_pos(player, word_pos);
SET_UNIPERIF_TDM_WORD_POS(player, 1_2, word_pos[WORD_1_2]);
SET_UNIPERIF_TDM_WORD_POS(player, 3_4, word_pos[WORD_3_4]);
SET_UNIPERIF_TDM_WORD_POS(player, 5_6, word_pos[WORD_5_6]);
SET_UNIPERIF_TDM_WORD_POS(player, 7_8, word_pos[WORD_7_8]);
/* set unip clk rate (not done vai set_sysclk ops) */
freq = runtime->rate * tdm_frame_size * 8;
mutex_lock(&player->ctrl_lock);
ret = uni_player_clk_set_rate(player, freq);
if (!ret)
player->mclk = freq;
mutex_unlock(&player->ctrl_lock);
return 0;
}
/*
* ALSA uniperipheral iec958 controls
*/
@ -668,11 +700,29 @@ static int uni_player_startup(struct snd_pcm_substream *substream,
{
struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
struct uniperif *player = priv->dai_data.uni;
int ret;
player->substream = substream;
player->clk_adj = 0;
return 0;
if (!UNIPERIF_TYPE_IS_TDM(player))
return 0;
/* refine hw constraint in tdm mode */
ret = snd_pcm_hw_rule_add(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_CHANNELS,
sti_uniperiph_fix_tdm_chan,
player, SNDRV_PCM_HW_PARAM_CHANNELS,
-1);
if (ret < 0)
return ret;
return snd_pcm_hw_rule_add(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_FORMAT,
sti_uniperiph_fix_tdm_format,
player, SNDRV_PCM_HW_PARAM_FORMAT,
-1);
}
static int uni_player_set_sysclk(struct snd_soc_dai *dai, int clk_id,
@ -682,7 +732,7 @@ static int uni_player_set_sysclk(struct snd_soc_dai *dai, int clk_id,
struct uniperif *player = priv->dai_data.uni;
int ret;
if (dir == SND_SOC_CLOCK_IN)
if (UNIPERIF_TYPE_IS_TDM(player) || (dir == SND_SOC_CLOCK_IN))
return 0;
if (clk_id != 0)
@ -714,7 +764,13 @@ static int uni_player_prepare(struct snd_pcm_substream *substream,
}
/* Calculate transfer size (in fifo cells and bytes) for frame count */
transfer_size = runtime->channels * UNIPERIF_FIFO_FRAMES;
if (player->info->type == SND_ST_UNIPERIF_TYPE_TDM) {
/* transfer size = user frame size (in 32 bits FIFO cell) */
transfer_size =
sti_uniperiph_get_user_frame_size(runtime) / 4;
} else {
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) {
@ -738,16 +794,19 @@ static int uni_player_prepare(struct snd_pcm_substream *substream,
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:
switch (player->info->type) {
case SND_ST_UNIPERIF_TYPE_HDMI:
ret = uni_player_prepare_iec958(player, runtime);
break;
case SND_ST_UNIPERIF_PLAYER_TYPE_PCM:
case SND_ST_UNIPERIF_TYPE_PCM:
ret = uni_player_prepare_pcm(player, runtime);
break;
case SND_ST_UNIPERIF_PLAYER_TYPE_SPDIF:
case SND_ST_UNIPERIF_TYPE_SPDIF:
ret = uni_player_prepare_iec958(player, runtime);
break;
case SND_ST_UNIPERIF_TYPE_TDM:
ret = uni_player_prepare_tdm(player, runtime);
break;
default:
dev_err(player->dev, "invalid player type");
return -EINVAL;
@ -852,8 +911,8 @@ static int uni_player_start(struct uniperif *player)
* 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);
if (UNIPERIF_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)
@ -954,27 +1013,30 @@ static void uni_player_shutdown(struct snd_pcm_substream *substream,
player->substream = NULL;
}
static int uni_player_parse_dt_clk_glue(struct platform_device *pdev,
struct uniperif *player)
static int uni_player_parse_dt_audio_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;
struct reg_field regfield[2] = {
/* PCM_CLK_SEL */
REG_FIELD(SYS_CFG_AUDIO_GLUE,
8 + player->info->id,
8 + player->info->id),
/* PCMP_VALID_SEL */
REG_FIELD(SYS_CFG_AUDIO_GLUE, 0, 1)
};
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 {
if (!regmap) {
dev_err(&pdev->dev, "sti-audio-clk-glue syscf not found\n");
return -EINVAL;
}
player->clk_sel = regmap_field_alloc(regmap, regfield[0]);
player->valid_sel = regmap_field_alloc(regmap, regfield[1]);
return 0;
}
@ -1012,19 +1074,21 @@ static int uni_player_parse_dt(struct platform_device *pdev,
}
if (strcasecmp(mode, "hdmi") == 0)
info->player_type = SND_ST_UNIPERIF_PLAYER_TYPE_HDMI;
info->type = SND_ST_UNIPERIF_TYPE_HDMI;
else if (strcasecmp(mode, "pcm") == 0)
info->player_type = SND_ST_UNIPERIF_PLAYER_TYPE_PCM;
info->type = SND_ST_UNIPERIF_TYPE_PCM;
else if (strcasecmp(mode, "spdif") == 0)
info->player_type = SND_ST_UNIPERIF_PLAYER_TYPE_SPDIF;
info->type = SND_ST_UNIPERIF_TYPE_SPDIF;
else if (strcasecmp(mode, "tdm") == 0)
info->type = SND_ST_UNIPERIF_TYPE_TDM;
else
info->player_type = SND_ST_UNIPERIF_PLAYER_TYPE_NONE;
info->type = SND_ST_UNIPERIF_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))
/* Get PCM_CLK_SEL & PCMP_VALID_SEL from audio-glue-ctrl SoC reg */
if (uni_player_parse_dt_audio_glue(pdev, player))
return -EINVAL;
return 0;
@ -1037,7 +1101,8 @@ static const struct snd_soc_dai_ops uni_player_dai_ops = {
.trigger = uni_player_trigger,
.hw_params = sti_uniperiph_dai_hw_params,
.set_fmt = sti_uniperiph_dai_set_fmt,
.set_sysclk = uni_player_set_sysclk
.set_sysclk = uni_player_set_sysclk,
.set_tdm_slot = sti_uniperiph_set_tdm_slot
};
int uni_player_init(struct platform_device *pdev,
@ -1047,7 +1112,6 @@ int uni_player_init(struct platform_device *pdev,
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);
@ -1057,6 +1121,11 @@ int uni_player_init(struct platform_device *pdev,
return ret;
}
if (UNIPERIF_TYPE_IS_TDM(player))
player->hw = &uni_tdm_hw;
else
player->hw = &uni_player_pcm_hw;
/* Get uniperif resource */
player->clk = of_clk_get(pdev->dev.of_node, 0);
if (IS_ERR(player->clk))
@ -1073,6 +1142,17 @@ int uni_player_init(struct platform_device *pdev,
}
}
/* connect to I2S/TDM TX bus */
if (player->valid_sel &&
(player->info->id == UNIPERIF_PLAYER_I2S_OUT)) {
ret = regmap_field_write(player->valid_sel, player->info->id);
if (ret) {
dev_err(player->dev,
"%s: unable to connect to tdm bus", __func__);
return ret;
}
}
ret = devm_request_irq(&pdev->dev, player->irq,
uni_player_irq_handler, IRQF_SHARED,
dev_name(&pdev->dev), player);
@ -1087,7 +1167,7 @@ int uni_player_init(struct platform_device *pdev,
SET_UNIPERIF_CTRL_SPDIF_LAT_OFF(player);
SET_UNIPERIF_CONFIG_IDLE_MOD_DISABLE(player);
if (UNIPERIF_PLAYER_TYPE_IS_IEC958(player)) {
if (UNIPERIF_TYPE_IS_IEC958(player)) {
/* Set default iec958 status bits */
/* Consumer, PCM, copyright, 2ch, mode 0 */

229
sound/soc/sti/uniperif_reader.c
View File

@ -73,55 +73,10 @@ static irqreturn_t uni_reader_irq_handler(int irq, void *dev_id)
return ret;
}
static int uni_reader_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
static int uni_reader_prepare_pcm(struct snd_pcm_runtime *runtime,
struct uniperif *reader)
{
struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
struct uniperif *reader = priv->dai_data.uni;
struct snd_pcm_runtime *runtime = substream->runtime;
int transfer_size, trigger_limit;
int slot_width;
int count = 10;
/* The reader should be stopped */
if (reader->state != UNIPERIF_STATE_STOPPED) {
dev_err(reader->dev, "%s: invalid reader state %d", __func__,
reader->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 (reader->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(reader))) {
dev_err(reader->dev, "invalid trigger limit %d", trigger_limit);
return -EINVAL;
}
SET_UNIPERIF_CONFIG_DMA_TRIG_LIMIT(reader, trigger_limit);
switch (reader->daifmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_IB_IF:
case SND_SOC_DAIFMT_NB_IF:
SET_UNIPERIF_I2S_FMT_LR_POL_HIG(reader);
break;
default:
SET_UNIPERIF_I2S_FMT_LR_POL_LOW(reader);
}
/* Force slot width to 32 in I2S mode */
if ((reader->daifmt & SND_SOC_DAIFMT_FORMAT_MASK)
@ -173,6 +128,109 @@ static int uni_reader_prepare(struct snd_pcm_substream *substream,
return -EINVAL;
}
/* Number of channels must be even */
if ((runtime->channels % 2) || (runtime->channels < 2) ||
(runtime->channels > 10)) {
dev_err(reader->dev, "%s: invalid nb of channels", __func__);
return -EINVAL;
}
SET_UNIPERIF_I2S_FMT_NUM_CH(reader, runtime->channels / 2);
SET_UNIPERIF_I2S_FMT_ORDER_MSB(reader);
return 0;
}
static int uni_reader_prepare_tdm(struct snd_pcm_runtime *runtime,
struct uniperif *reader)
{
int frame_size; /* user tdm frame size in bytes */
/* default unip TDM_WORD_POS_X_Y */
unsigned int word_pos[4] = {
0x04060002, 0x0C0E080A, 0x14161012, 0x1C1E181A};
frame_size = sti_uniperiph_get_user_frame_size(runtime);
/* fix 16/0 format */
SET_UNIPERIF_CONFIG_MEM_FMT_16_0(reader);
SET_UNIPERIF_I2S_FMT_DATA_SIZE_32(reader);
/* number of words inserted on the TDM line */
SET_UNIPERIF_I2S_FMT_NUM_CH(reader, frame_size / 4 / 2);
SET_UNIPERIF_I2S_FMT_ORDER_MSB(reader);
SET_UNIPERIF_I2S_FMT_ALIGN_LEFT(reader);
SET_UNIPERIF_TDM_ENABLE_TDM_ENABLE(reader);
/*
* set the timeslots allocation for words in FIFO
*
* HW bug: (LSB word < MSB word) => this config is not possible
* So if we want (LSB word < MSB) word, then it shall be
* handled by user
*/
sti_uniperiph_get_tdm_word_pos(reader, word_pos);
SET_UNIPERIF_TDM_WORD_POS(reader, 1_2, word_pos[WORD_1_2]);
SET_UNIPERIF_TDM_WORD_POS(reader, 3_4, word_pos[WORD_3_4]);
SET_UNIPERIF_TDM_WORD_POS(reader, 5_6, word_pos[WORD_5_6]);
SET_UNIPERIF_TDM_WORD_POS(reader, 7_8, word_pos[WORD_7_8]);
return 0;
}
static int uni_reader_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
struct uniperif *reader = priv->dai_data.uni;
struct snd_pcm_runtime *runtime = substream->runtime;
int transfer_size, trigger_limit, ret;
int count = 10;
/* The reader should be stopped */
if (reader->state != UNIPERIF_STATE_STOPPED) {
dev_err(reader->dev, "%s: invalid reader state %d", __func__,
reader->state);
return -EINVAL;
}
/* Calculate transfer size (in fifo cells and bytes) for frame count */
if (reader->info->type == SND_ST_UNIPERIF_TYPE_TDM) {
/* transfer size = unip frame size (in 32 bits FIFO cell) */
transfer_size =
sti_uniperiph_get_user_frame_size(runtime) / 4;
} else {
transfer_size = runtime->channels * UNIPERIF_FIFO_FRAMES;
}
/* Calculate number of empty cells available before asserting DREQ */
if (reader->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(reader))) {
dev_err(reader->dev, "invalid trigger limit %d", trigger_limit);
return -EINVAL;
}
SET_UNIPERIF_CONFIG_DMA_TRIG_LIMIT(reader, trigger_limit);
if (UNIPERIF_TYPE_IS_TDM(reader))
ret = uni_reader_prepare_tdm(runtime, reader);
else
ret = uni_reader_prepare_pcm(runtime, reader);
if (ret)
return ret;
switch (reader->daifmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
SET_UNIPERIF_I2S_FMT_ALIGN_LEFT(reader);
@ -191,21 +249,26 @@ static int uni_reader_prepare(struct snd_pcm_substream *substream,
return -EINVAL;
}
SET_UNIPERIF_I2S_FMT_ORDER_MSB(reader);
/* Data clocking (changing) on the rising edge */
SET_UNIPERIF_I2S_FMT_SCLK_EDGE_RISING(reader);
/* Number of channels must be even */
if ((runtime->channels % 2) || (runtime->channels < 2) ||
(runtime->channels > 10)) {
dev_err(reader->dev, "%s: invalid nb of channels", __func__);
return -EINVAL;
/* Data clocking (changing) on the rising/falling edge */
switch (reader->daifmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
SET_UNIPERIF_I2S_FMT_LR_POL_LOW(reader);
SET_UNIPERIF_I2S_FMT_SCLK_EDGE_RISING(reader);
break;
case SND_SOC_DAIFMT_NB_IF:
SET_UNIPERIF_I2S_FMT_LR_POL_HIG(reader);
SET_UNIPERIF_I2S_FMT_SCLK_EDGE_RISING(reader);
break;
case SND_SOC_DAIFMT_IB_NF:
SET_UNIPERIF_I2S_FMT_LR_POL_LOW(reader);
SET_UNIPERIF_I2S_FMT_SCLK_EDGE_FALLING(reader);
break;
case SND_SOC_DAIFMT_IB_IF:
SET_UNIPERIF_I2S_FMT_LR_POL_HIG(reader);
SET_UNIPERIF_I2S_FMT_SCLK_EDGE_FALLING(reader);
break;
}
SET_UNIPERIF_I2S_FMT_NUM_CH(reader, runtime->channels / 2);
/* Clear any pending interrupts */
SET_UNIPERIF_ITS_BCLR(reader, GET_UNIPERIF_ITS(reader));
@ -293,6 +356,32 @@ static int uni_reader_trigger(struct snd_pcm_substream *substream,
}
}
static int uni_reader_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct sti_uniperiph_data *priv = snd_soc_dai_get_drvdata(dai);
struct uniperif *reader = priv->dai_data.uni;
int ret;
if (!UNIPERIF_TYPE_IS_TDM(reader))
return 0;
/* refine hw constraint in tdm mode */
ret = snd_pcm_hw_rule_add(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_CHANNELS,
sti_uniperiph_fix_tdm_chan,
reader, SNDRV_PCM_HW_PARAM_CHANNELS,
-1);
if (ret < 0)
return ret;
return snd_pcm_hw_rule_add(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_FORMAT,
sti_uniperiph_fix_tdm_format,
reader, SNDRV_PCM_HW_PARAM_FORMAT,
-1);
}
static void uni_reader_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
@ -310,6 +399,7 @@ static int uni_reader_parse_dt(struct platform_device *pdev,
{
struct uniperif_info *info;
struct device_node *node = pdev->dev.of_node;
const char *mode;
/* Allocate memory for the info structure */
info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
@ -322,6 +412,17 @@ static int uni_reader_parse_dt(struct platform_device *pdev,
return -EINVAL;
}
/* Read the device mode property */
if (of_property_read_string(node, "st,mode", &mode)) {
dev_err(&pdev->dev, "uniperipheral mode not defined");
return -EINVAL;
}
if (strcasecmp(mode, "tdm") == 0)
info->type = SND_ST_UNIPERIF_TYPE_TDM;
else
info->type = SND_ST_UNIPERIF_TYPE_PCM;
/* Save the info structure */
reader->info = info;
@ -329,11 +430,13 @@ static int uni_reader_parse_dt(struct platform_device *pdev,
}
static const struct snd_soc_dai_ops uni_reader_dai_ops = {
.startup = uni_reader_startup,
.shutdown = uni_reader_shutdown,
.prepare = uni_reader_prepare,
.trigger = uni_reader_trigger,
.hw_params = sti_uniperiph_dai_hw_params,
.set_fmt = sti_uniperiph_dai_set_fmt,
.set_tdm_slot = sti_uniperiph_set_tdm_slot
};
int uni_reader_init(struct platform_device *pdev,
@ -343,7 +446,6 @@ int uni_reader_init(struct platform_device *pdev,
reader->dev = &pdev->dev;
reader->state = UNIPERIF_STATE_STOPPED;
reader->hw = &uni_reader_pcm_hw;
reader->dai_ops = &uni_reader_dai_ops;
ret = uni_reader_parse_dt(pdev, reader);
@ -352,6 +454,11 @@ int uni_reader_init(struct platform_device *pdev,
return ret;
}
if (UNIPERIF_TYPE_IS_TDM(reader))
reader->hw = &uni_tdm_hw;
else
reader->hw = &uni_reader_pcm_hw;
ret = devm_request_irq(&pdev->dev, reader->irq,
uni_reader_irq_handler, IRQF_SHARED,
dev_name(&pdev->dev), reader);