[alsa-devel] [[Patch] 1/2] ASoC: sti: suppress inappropriate DT fields
Arnaud Pouliquen
arnaud.pouliquen at st.com
Tue Sep 13 09:58:23 CEST 2016
Update to suppress some DT nodes that can be handled in driver
using compatible string.
"dai-name", "st,version"and "st,mode" are suppressed
"st,tdm-mode" is added to handle TDM mode.
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen at st.com>
---
sound/soc/sti/sti_uniperif.c | 130 +++++++++++++++++++++++++++++++++-------
sound/soc/sti/uniperif.h | 28 ++++-----
sound/soc/sti/uniperif_player.c | 79 +++++-------------------
sound/soc/sti/uniperif_reader.c | 46 +-------------
4 files changed, 140 insertions(+), 143 deletions(-)
diff --git a/sound/soc/sti/sti_uniperif.c b/sound/soc/sti/sti_uniperif.c
index 488ef4e..549fac3 100644
--- a/sound/soc/sti/sti_uniperif.c
+++ b/sound/soc/sti/sti_uniperif.c
@@ -19,6 +19,84 @@
#define UNIPERIF_MAX_FRAME_SZ 0x20
#define UNIPERIF_ALLOWED_FRAME_SZ (0x08 | 0x10 | 0x18 | UNIPERIF_MAX_FRAME_SZ)
+struct sti_uniperiph_dev_data {
+ unsigned int id; /* Nb available player instances */
+ unsigned int version; /* player IP version */
+ unsigned int stream;
+ const char *dai_names;
+ enum uniperif_type type;
+};
+
+static const struct sti_uniperiph_dev_data sti_uniplayer_hdmi = {
+ .id = 0,
+ .version = SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0,
+ .stream = SNDRV_PCM_STREAM_PLAYBACK,
+ .dai_names = "Uni Player #0 (HDMI)",
+ .type = SND_ST_UNIPERIF_TYPE_HDMI
+};
+
+static const struct sti_uniperiph_dev_data sti_uniplayer_pcm_out = {
+ .id = 1,
+ .version = SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0,
+ .stream = SNDRV_PCM_STREAM_PLAYBACK,
+ .dai_names = "Uni Player #1 (PCM OUT)",
+ .type = SND_ST_UNIPERIF_TYPE_PCM | SND_ST_UNIPERIF_TYPE_TDM,
+};
+
+static const struct sti_uniperiph_dev_data sti_uniplayer_dac = {
+ .id = 2,
+ .version = SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0,
+ .stream = SNDRV_PCM_STREAM_PLAYBACK,
+ .dai_names = "Uni Player #2 (DAC)",
+ .type = SND_ST_UNIPERIF_TYPE_PCM,
+};
+
+static const struct sti_uniperiph_dev_data sti_uniplayer_spdif = {
+ .id = 3,
+ .version = SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0,
+ .stream = SNDRV_PCM_STREAM_PLAYBACK,
+ .dai_names = "Uni Player #3 (SPDIF)",
+ .type = SND_ST_UNIPERIF_TYPE_SPDIF
+};
+
+static const struct sti_uniperiph_dev_data sti_unireader_pcm_in = {
+ .id = 0,
+ .version = SND_ST_UNIPERIF_VERSION_UNI_RDR_1_0,
+ .stream = SNDRV_PCM_STREAM_CAPTURE,
+ .dai_names = "Uni Reader #0 (PCM IN)",
+ .type = SND_ST_UNIPERIF_TYPE_PCM | SND_ST_UNIPERIF_TYPE_TDM,
+};
+
+static const struct sti_uniperiph_dev_data sti_unireader_hdmi_in = {
+ .id = 1,
+ .version = SND_ST_UNIPERIF_VERSION_UNI_RDR_1_0,
+ .stream = SNDRV_PCM_STREAM_CAPTURE,
+ .dai_names = "Uni Reader #1 (HDMI IN)",
+ .type = SND_ST_UNIPERIF_TYPE_PCM,
+};
+
+static const struct of_device_id snd_soc_sti_match[] = {
+ { .compatible = "st,stih407-uni-player-hdmi",
+ .data = &sti_uniplayer_hdmi
+ },
+ { .compatible = "st,stih407-uni-player-pcm-out",
+ .data = &sti_uniplayer_pcm_out
+ },
+ { .compatible = "st,stih407-uni-player-dac",
+ .data = &sti_uniplayer_dac
+ },
+ { .compatible = "st,stih407-uni-player-spdif",
+ .data = &sti_uniplayer_spdif
+ },
+ { .compatible = "st,stih407-uni-reader-pcm_in",
+ .data = &sti_unireader_pcm_in
+ },
+ { .compatible = "st,stih407-uni-reader-hdmi",
+ .data = &sti_unireader_hdmi_in
+ },
+ {},
+};
+
int sti_uniperiph_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
unsigned int rx_mask, int slots,
int slot_width)
@@ -167,8 +245,8 @@ static int sti_uniperiph_dai_create_ctrl(struct snd_soc_dai *dai)
* Uniperipheral instance ID
*/
ctrl = &uni->snd_ctrls[i];
- ctrl->index = uni->info->id;
- ctrl->device = uni->info->id;
+ ctrl->index = uni->id;
+ ctrl->device = uni->id;
}
return snd_soc_add_dai_controls(dai, uni->snd_ctrls, uni->num_ctrls);
@@ -186,7 +264,7 @@ int sti_uniperiph_dai_hw_params(struct snd_pcm_substream *substream,
struct snd_dmaengine_dai_dma_data *dma_data;
int transfer_size;
- if (uni->info->type == SND_ST_UNIPERIF_TYPE_TDM)
+ if (uni->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
@@ -235,7 +313,7 @@ static int sti_uniperiph_dai_resume(struct snd_soc_dai *dai)
struct uniperif *uni = priv->dai_data.uni;
int ret;
- if (of_device_is_compatible(dai->dev->of_node, "st,sti-uni-player")) {
+ if (priv->dai_data.stream == SNDRV_PCM_STREAM_PLAYBACK) {
ret = uni_player_resume(uni);
if (ret)
return ret;
@@ -256,7 +334,7 @@ static int sti_uniperiph_dai_probe(struct snd_soc_dai *dai)
struct sti_uniperiph_dai *dai_data = &priv->dai_data;
/* DMA settings*/
- if (of_device_is_compatible(dai->dev->of_node, "st,sti-uni-player"))
+ if (priv->dai_data.stream == SNDRV_PCM_STREAM_PLAYBACK)
snd_soc_dai_init_dma_data(dai, &dai_data->dma_data, NULL);
else
snd_soc_dai_init_dma_data(dai, NULL, &dai_data->dma_data);
@@ -280,25 +358,32 @@ static const struct snd_soc_component_driver sti_uniperiph_dai_component = {
static int sti_uniperiph_cpu_dai_of(struct device_node *node,
struct sti_uniperiph_data *priv)
{
- const char *str;
- int ret;
struct device *dev = &priv->pdev->dev;
struct sti_uniperiph_dai *dai_data = &priv->dai_data;
struct snd_soc_dai_driver *dai = priv->dai;
struct snd_soc_pcm_stream *stream;
struct uniperif *uni;
+ const struct of_device_id *of_id;
+ const struct sti_uniperiph_dev_data *dev_data;
+ const char *mode;
+
+ /* Populate data structure depending on compatibility */
+ of_id = of_match_node(snd_soc_sti_match, node);
+ if (!of_id->data) {
+ dev_err(dev, "data associated to device is missing");
+ return -EINVAL;
+ }
+ dev_data = (struct sti_uniperiph_dev_data *)of_id->data;
uni = devm_kzalloc(dev, sizeof(*uni), GFP_KERNEL);
if (!uni)
return -ENOMEM;
+ uni->id = dev_data->id;
+ uni->ver = dev_data->version;
+
*dai = sti_uniperiph_dai_template;
- ret = of_property_read_string(node, "dai-name", &str);
- if (ret < 0) {
- dev_err(dev, "%s: dai name missing.\n", __func__);
- return -EINVAL;
- }
- dai->name = str;
+ dai->name = dev_data->dai_names;
/* Get resources */
uni->mem_region = platform_get_resource(priv->pdev, IORESOURCE_MEM, 0);
@@ -322,9 +407,20 @@ static int sti_uniperiph_cpu_dai_of(struct device_node *node,
return -ENXIO;
}
+ uni->type = dev_data->type;
+
+ /* check if player should be configured for tdm */
+ if (dev_data->type & SND_ST_UNIPERIF_TYPE_TDM) {
+ if (!of_property_read_string(node, "st,tdm-mode", &mode))
+ uni->type = SND_ST_UNIPERIF_TYPE_TDM;
+ else
+ uni->type = SND_ST_UNIPERIF_TYPE_PCM;
+ }
+
dai_data->uni = uni;
+ dai_data->stream = dev_data->stream;
- if (of_device_is_compatible(node, "st,sti-uni-player")) {
+ if (priv->dai_data.stream == SNDRV_PCM_STREAM_PLAYBACK) {
uni_player_init(priv->pdev, uni);
stream = &dai->playback;
} else {
@@ -376,12 +472,6 @@ static int sti_uniperiph_probe(struct platform_device *pdev)
&dmaengine_pcm_config, 0);
}
-static const struct of_device_id snd_soc_sti_match[] = {
- { .compatible = "st,sti-uni-player", },
- { .compatible = "st,sti-uni-reader", },
- {},
-};
-
static struct platform_driver sti_uniperiph_driver = {
.driver = {
.name = "sti-uniperiph-dai",
diff --git a/sound/soc/sti/uniperif.h b/sound/soc/sti/uniperif.h
index eb9933c..1993c65 100644
--- a/sound/soc/sti/uniperif.h
+++ b/sound/soc/sti/uniperif.h
@@ -1220,16 +1220,16 @@
#define UNIPERIF_FIFO_FRAMES 4 /* FDMA trigger limit in frames */
#define UNIPERIF_TYPE_IS_HDMI(p) \
- ((p)->info->type == SND_ST_UNIPERIF_TYPE_HDMI)
+ ((p)->type == SND_ST_UNIPERIF_TYPE_HDMI)
#define UNIPERIF_TYPE_IS_PCM(p) \
- ((p)->info->type == SND_ST_UNIPERIF_TYPE_PCM)
+ ((p)->type == SND_ST_UNIPERIF_TYPE_PCM)
#define UNIPERIF_TYPE_IS_SPDIF(p) \
- ((p)->info->type == SND_ST_UNIPERIF_TYPE_SPDIF)
+ ((p)->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)
+ ((p)->type == SND_ST_UNIPERIF_TYPE_TDM)
/*
* Uniperipheral IP revisions
@@ -1249,11 +1249,11 @@ enum uniperif_version {
};
enum uniperif_type {
- 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
+ SND_ST_UNIPERIF_TYPE_NONE = 0x00,
+ SND_ST_UNIPERIF_TYPE_HDMI = 0x01,
+ SND_ST_UNIPERIF_TYPE_PCM = 0x02,
+ SND_ST_UNIPERIF_TYPE_SPDIF = 0x04,
+ SND_ST_UNIPERIF_TYPE_TDM = 0x08
};
enum uniperif_state {
@@ -1278,12 +1278,6 @@ enum uniperif_word_pos {
WORD_MAX
};
-struct uniperif_info {
- int id; /* instance value of the uniperipheral IP */
- enum uniperif_type type;
- int underflow_enabled; /* Underflow recovery mode */
-};
-
struct uniperif_iec958_settings {
enum uniperif_iec958_encoding_mode encoding_mode;
struct snd_aes_iec958 iec958;
@@ -1298,8 +1292,10 @@ struct dai_tdm_slot {
struct uniperif {
/* System information */
- struct uniperif_info *info;
+ enum uniperif_type type;
+ int underflow_enabled; /* Underflow recovery mode */
struct device *dev;
+ int id; /* instance value of the uniperipheral IP */
int ver; /* IP version, used by register access macros */
struct regmap_field *clk_sel;
struct regmap_field *valid_sel;
diff --git a/sound/soc/sti/uniperif_player.c b/sound/soc/sti/uniperif_player.c
index 1ac2db2..645e415 100644
--- a/sound/soc/sti/uniperif_player.c
+++ b/sound/soc/sti/uniperif_player.c
@@ -100,7 +100,7 @@ static irqreturn_t uni_player_irq_handler(int irq, void *dev_id)
dev_err(player->dev, "FIFO underflow error detected");
/* Interrupt is just for information when underflow recovery */
- if (player->info->underflow_enabled) {
+ if (player->underflow_enabled) {
/* Update state to underflow */
player->state = UNIPERIF_STATE_UNDERFLOW;
@@ -134,7 +134,7 @@ static irqreturn_t uni_player_irq_handler(int irq, void *dev_id)
/* Check for underflow recovery done */
if (unlikely(status & UNIPERIF_ITM_UNDERFLOW_REC_DONE_MASK(player))) {
- if (!player->info->underflow_enabled) {
+ if (!player->underflow_enabled) {
dev_err(player->dev, "unexpected Underflow recovering");
return -EPERM;
}
@@ -764,7 +764,7 @@ static int uni_player_prepare(struct snd_pcm_substream *substream,
}
/* Calculate transfer size (in fifo cells and bytes) for frame count */
- if (player->info->type == SND_ST_UNIPERIF_TYPE_TDM) {
+ if (player->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;
@@ -794,7 +794,7 @@ 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->type) {
+ switch (player->type) {
case SND_ST_UNIPERIF_TYPE_HDMI:
ret = uni_player_prepare_iec958(player, runtime);
break;
@@ -884,7 +884,7 @@ static int uni_player_start(struct uniperif *player)
SET_UNIPERIF_ITM_BSET_FIFO_ERROR(player);
/* Enable underflow recovery interrupts */
- if (player->info->underflow_enabled) {
+ if (player->underflow_enabled) {
SET_UNIPERIF_ITM_BSET_UNDERFLOW_REC_DONE(player);
SET_UNIPERIF_ITM_BSET_UNDERFLOW_REC_FAILED(player);
}
@@ -1021,8 +1021,8 @@ static int uni_player_parse_dt_audio_glue(struct platform_device *pdev,
struct reg_field regfield[2] = {
/* PCM_CLK_SEL */
REG_FIELD(SYS_CFG_AUDIO_GLUE,
- 8 + player->info->id,
- 8 + player->info->id),
+ 8 + player->id,
+ 8 + player->id),
/* PCMP_VALID_SEL */
REG_FIELD(SYS_CFG_AUDIO_GLUE, 0, 1)
};
@@ -1040,60 +1040,6 @@ static int uni_player_parse_dt_audio_glue(struct platform_device *pdev,
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;
-
- if (of_property_read_u32(pnode, "st,version", &player->ver) ||
- 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;
-
- if (of_property_read_u32(pnode, "st,uniperiph-id", &info->id)) {
- dev_err(dev, "uniperipheral id not defined");
- return -EINVAL;
- }
-
- /* Read the device mode property */
- if (of_property_read_string(pnode, "st,mode", &mode)) {
- dev_err(dev, "uniperipheral mode not defined");
- return -EINVAL;
- }
-
- if (strcasecmp(mode, "hdmi") == 0)
- info->type = SND_ST_UNIPERIF_TYPE_HDMI;
- else if (strcasecmp(mode, "pcm") == 0)
- info->type = SND_ST_UNIPERIF_TYPE_PCM;
- else if (strcasecmp(mode, "spdif") == 0)
- info->type = SND_ST_UNIPERIF_TYPE_SPDIF;
- else if (strcasecmp(mode, "tdm") == 0)
- info->type = SND_ST_UNIPERIF_TYPE_TDM;
- else
- info->type = SND_ST_UNIPERIF_TYPE_NONE;
-
- /* Save the info structure */
- player->info = info;
-
- /* 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;
-}
-
static const struct snd_soc_dai_ops uni_player_dai_ops = {
.startup = uni_player_startup,
.shutdown = uni_player_shutdown,
@@ -1114,13 +1060,18 @@ int uni_player_init(struct platform_device *pdev,
player->state = UNIPERIF_STATE_STOPPED;
player->dai_ops = &uni_player_dai_ops;
- ret = uni_player_parse_dt(pdev, player);
+ /* Get PCM_CLK_SEL & PCMP_VALID_SEL from audio-glue-ctrl SoC reg */
+ ret = uni_player_parse_dt_audio_glue(pdev, player);
if (ret < 0) {
dev_err(player->dev, "Failed to parse DeviceTree");
return ret;
}
+ /* Underflow recovery is only supported on later ip revisions */
+ if (player->ver >= SND_ST_UNIPERIF_VERSION_UNI_PLR_TOP_1_0)
+ player->underflow_enabled = 1;
+
if (UNIPERIF_TYPE_IS_TDM(player))
player->hw = &uni_tdm_hw;
else
@@ -1144,8 +1095,8 @@ 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);
+ (player->id == UNIPERIF_PLAYER_I2S_OUT)) {
+ ret = regmap_field_write(player->valid_sel, player->id);
if (ret) {
dev_err(player->dev,
"%s: unable to connect to tdm bus", __func__);
diff --git a/sound/soc/sti/uniperif_reader.c b/sound/soc/sti/uniperif_reader.c
index eb74a32..0e1c3ee 100644
--- a/sound/soc/sti/uniperif_reader.c
+++ b/sound/soc/sti/uniperif_reader.c
@@ -13,6 +13,7 @@
#include "uniperif.h"
+#define UNIPERIF_READER_I2S_IN 0 /* reader id connected to I2S/TDM TX bus */
/*
* Note: snd_pcm_hardware is linked to DMA controller but is declared here to
* integrate unireader capability in term of rate and supported channels
@@ -195,7 +196,7 @@ static int uni_reader_prepare(struct snd_pcm_substream *substream,
}
/* Calculate transfer size (in fifo cells and bytes) for frame count */
- if (reader->info->type == SND_ST_UNIPERIF_TYPE_TDM) {
+ if (reader->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;
@@ -280,7 +281,7 @@ static int uni_reader_prepare(struct snd_pcm_substream *substream,
SET_UNIPERIF_ITM_BSET_MEM_BLK_READ(reader);
/* Enable underflow recovery interrupts */
- if (reader->info->underflow_enabled) {
+ if (reader->underflow_enabled) {
SET_UNIPERIF_ITM_BSET_UNDERFLOW_REC_DONE(reader);
SET_UNIPERIF_ITM_BSET_UNDERFLOW_REC_FAILED(reader);
}
@@ -394,41 +395,6 @@ static void uni_reader_shutdown(struct snd_pcm_substream *substream,
}
}
-static int uni_reader_parse_dt(struct platform_device *pdev,
- struct uniperif *reader)
-{
- 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);
- if (!info)
- return -ENOMEM;
-
- if (of_property_read_u32(node, "st,version", &reader->ver) ||
- reader->ver == SND_ST_UNIPERIF_VERSION_UNKNOWN) {
- dev_err(&pdev->dev, "Unknown uniperipheral version ");
- 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;
-
- return 0;
-}
-
static const struct snd_soc_dai_ops uni_reader_dai_ops = {
.startup = uni_reader_startup,
.shutdown = uni_reader_shutdown,
@@ -448,12 +414,6 @@ int uni_reader_init(struct platform_device *pdev,
reader->state = UNIPERIF_STATE_STOPPED;
reader->dai_ops = &uni_reader_dai_ops;
- ret = uni_reader_parse_dt(pdev, reader);
- if (ret < 0) {
- dev_err(reader->dev, "Failed to parse DeviceTree");
- return ret;
- }
-
if (UNIPERIF_TYPE_IS_TDM(reader))
reader->hw = &uni_tdm_hw;
else
--
1.9.1
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