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Subject[PATCH 4/6] ASoC: mediatek: add MT7622 AFE support
Date
This patch adds support for the MT7622 AFE which reuses MT2701 driver.

We also introduce the 'struct mt2701_soc_variants' to differentiate
between the SoC generations as there might be other (existing or future)
chips that use the same binding and driver, then being a little more
abstract could help in the long run.

Cc: Jia Zeng <jia.zeng@mediatek.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Reviewed-by: Garlic Tseng <garlic.tseng@mediatek.com>
---
sound/soc/mediatek/mt2701/mt2701-afe-clock-ctrl.c | 2 +-
sound/soc/mediatek/mt2701/mt2701-afe-common.h | 11 +++--
sound/soc/mediatek/mt2701/mt2701-afe-pcm.c | 49 ++++++++++++++++++-----
sound/soc/mediatek/mt2701/mt2701-reg.h | 1 +
4 files changed, 48 insertions(+), 15 deletions(-)

diff --git a/sound/soc/mediatek/mt2701/mt2701-afe-clock-ctrl.c b/sound/soc/mediatek/mt2701/mt2701-afe-clock-ctrl.c
index d4e6a5e..1793c8d 100644
--- a/sound/soc/mediatek/mt2701/mt2701-afe-clock-ctrl.c
+++ b/sound/soc/mediatek/mt2701/mt2701-afe-clock-ctrl.c
@@ -44,7 +44,7 @@ int mt2701_init_clock(struct mtk_base_afe *afe)
}

/* Get I2S related clocks */
- for (i = 0; i < MT2701_I2S_NUM; i++) {
+ for (i = 0; i < afe_priv->soc->i2s_num; i++) {
struct mt2701_i2s_path *i2s_path = &afe_priv->i2s_path[i];
struct clk *i2s_ck;
char name[13];
diff --git a/sound/soc/mediatek/mt2701/mt2701-afe-common.h b/sound/soc/mediatek/mt2701/mt2701-afe-common.h
index 8dabf19..1ebac4b 100644
--- a/sound/soc/mediatek/mt2701/mt2701-afe-common.h
+++ b/sound/soc/mediatek/mt2701/mt2701-afe-common.h
@@ -25,7 +25,6 @@

#define MT2701_PLL_DOMAIN_0_RATE 98304000
#define MT2701_PLL_DOMAIN_1_RATE 90316800
-#define MT2701_I2S_NUM 4

enum {
MT2701_MEMIF_DL1,
@@ -100,7 +99,6 @@ struct mt2701_i2s_data {
};

struct mt2701_i2s_path {
- int dai_id;
int mclk_rate;
int on[MTK_STREAM_NUM];
int occupied[MTK_STREAM_NUM];
@@ -112,11 +110,18 @@ struct mt2701_i2s_path {
struct clk *asrco_ck;
};

+struct mt2701_soc_variants {
+ bool has_one_heart_mode;
+ int i2s_num;
+};
+
struct mt2701_afe_private {
- struct mt2701_i2s_path i2s_path[MT2701_I2S_NUM];
+ struct mt2701_i2s_path *i2s_path;
struct clk *base_ck[MT2701_BASE_CLK_NUM];
struct clk *mrgif_ck;
bool mrg_enable[MTK_STREAM_NUM];
+
+ const struct mt2701_soc_variants *soc;
};

#endif
diff --git a/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c b/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c
index 99094a57..3bc13b3 100644
--- a/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c
+++ b/sound/soc/mediatek/mt2701/mt2701-afe-pcm.c
@@ -21,6 +21,7 @@
#include <linux/mfd/syscon.h>
#include <linux/of.h>
#include <linux/of_address.h>
+#include <linux/of_device.h>
#include <linux/pm_runtime.h>

#include "mt2701-afe-common.h"
@@ -37,7 +38,7 @@
.period_bytes_max = 1024 * 256,
.periods_min = 4,
.periods_max = 1024,
- .buffer_bytes_max = 1024 * 1024 * 16,
+ .buffer_bytes_max = 1024 * 1024,
.fifo_size = 0,
};

@@ -69,9 +70,10 @@ struct mt2701_afe_rate {

static int mt2701_dai_num_to_i2s(struct mtk_base_afe *afe, int num)
{
+ struct mt2701_afe_private *afe_priv = afe->platform_priv;
int val = num - MT2701_IO_I2S;

- if (val < 0 || val >= MT2701_I2S_NUM) {
+ if (val < 0 || val >= afe_priv->soc->i2s_num) {
dev_err(afe->dev, "%s, num not available, num %d, val %d\n",
__func__, num, val);
return -EINVAL;
@@ -94,12 +96,14 @@ static int mt2701_afe_i2s_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
+ struct mt2701_afe_private *afe_priv = afe->platform_priv;
int i2s_num = mt2701_dai_num_to_i2s(afe, dai->id);
+ bool mode = afe_priv->soc->has_one_heart_mode;

if (i2s_num < 0)
return i2s_num;

- return mt2701_afe_enable_mclk(afe, i2s_num);
+ return mt2701_afe_enable_mclk(afe, mode ? 1 : i2s_num);
}

static int mt2701_afe_i2s_path_disable(struct mtk_base_afe *afe,
@@ -130,6 +134,7 @@ static void mt2701_afe_i2s_shutdown(struct snd_pcm_substream *substream,
struct mt2701_afe_private *afe_priv = afe->platform_priv;
int i2s_num = mt2701_dai_num_to_i2s(afe, dai->id);
struct mt2701_i2s_path *i2s_path;
+ bool mode = afe_priv->soc->has_one_heart_mode;

if (i2s_num < 0)
return;
@@ -149,7 +154,7 @@ static void mt2701_afe_i2s_shutdown(struct snd_pcm_substream *substream,

exit:
/* disable mclk */
- mt2701_afe_disable_mclk(afe, i2s_num);
+ mt2701_afe_disable_mclk(afe, mode ? 1 : i2s_num);
}

static int mt2701_i2s_path_enable(struct mtk_base_afe *afe,
@@ -157,6 +162,7 @@ static int mt2701_i2s_path_enable(struct mtk_base_afe *afe,
int stream_dir, int rate)
{
const struct mt2701_i2s_data *i2s_data = i2s_path->i2s_data[stream_dir];
+ struct mt2701_afe_private *afe_priv = afe->platform_priv;
int reg, fs, w_len = 1; /* now we support bck 64bits only */
unsigned int mask, val;

@@ -180,6 +186,10 @@ static int mt2701_i2s_path_enable(struct mtk_base_afe *afe,
val |= ASYS_I2S_IN_PHASE_FIX;
reg = ASMI_TIMING_CON1;
} else {
+ if (afe_priv->soc->has_one_heart_mode) {
+ mask |= ASYS_I2S_CON_ONE_HEART_MODE;
+ val |= ASYS_I2S_CON_ONE_HEART_MODE;
+ }
reg = ASMO_TIMING_CON1;
}

@@ -212,6 +222,7 @@ static int mt2701_afe_i2s_prepare(struct snd_pcm_substream *substream,
struct mt2701_afe_private *afe_priv = afe->platform_priv;
int ret, i2s_num = mt2701_dai_num_to_i2s(afe, dai->id);
struct mt2701_i2s_path *i2s_path;
+ bool mode = afe_priv->soc->has_one_heart_mode;

if (i2s_num < 0)
return i2s_num;
@@ -221,7 +232,7 @@ static int mt2701_afe_i2s_prepare(struct snd_pcm_substream *substream,
if (i2s_path->occupied[substream->stream])
return -EBUSY;

- ret = mt2701_mclk_configuration(afe, i2s_num);
+ ret = mt2701_mclk_configuration(afe, mode ? 1 : i2s_num);
if (ret)
return ret;

@@ -244,19 +255,18 @@ static int mt2701_afe_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id,
struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
struct mt2701_afe_private *afe_priv = afe->platform_priv;
int i2s_num = mt2701_dai_num_to_i2s(afe, dai->id);
+ bool mode = afe_priv->soc->has_one_heart_mode;

if (i2s_num < 0)
return i2s_num;

/* mclk */
if (dir == SND_SOC_CLOCK_IN) {
- dev_warn(dai->dev,
- "%s() warning: mt2701 doesn't support mclk input\n",
- __func__);
+ dev_warn(dai->dev, "The SoCs doesn't support mclk input\n");
return -EINVAL;
}

- afe_priv->i2s_path[i2s_num].mclk_rate = freq;
+ afe_priv->i2s_path[mode ? 1 : i2s_num].mclk_rate = freq;

return 0;
}
@@ -1347,9 +1357,16 @@ static int mt2701_afe_pcm_dev_probe(struct platform_device *pdev)
return -ENOMEM;

afe_priv = afe->platform_priv;
+ afe_priv->soc = of_device_get_match_data(&pdev->dev);
afe->dev = &pdev->dev;
dev = afe->dev;

+ afe_priv->i2s_path = devm_kzalloc(dev, afe_priv->soc->i2s_num *
+ sizeof(struct mt2701_i2s_path),
+ GFP_KERNEL);
+ if (!afe_priv->i2s_path)
+ return -ENOMEM;
+
irq_id = platform_get_irq_byname(pdev, "asys");
if (irq_id < 0) {
dev_err(dev, "unable to get ASYS IRQ\n");
@@ -1394,7 +1411,7 @@ static int mt2701_afe_pcm_dev_probe(struct platform_device *pdev)
afe->irqs[i].irq_data = &irq_data[i];

/* I2S initialize */
- for (i = 0; i < MT2701_I2S_NUM; i++) {
+ for (i = 0; i < afe_priv->soc->i2s_num; i++) {
afe_priv->i2s_path[i].i2s_data[SNDRV_PCM_STREAM_PLAYBACK] =
&mt2701_i2s_data[i][SNDRV_PCM_STREAM_PLAYBACK];
afe_priv->i2s_path[i].i2s_data[SNDRV_PCM_STREAM_CAPTURE] =
@@ -1459,8 +1476,18 @@ static int mt2701_afe_pcm_dev_remove(struct platform_device *pdev)
return 0;
}

+static const struct mt2701_soc_variants mt2701_soc_v1 = {
+ .i2s_num = 4,
+};
+
+static const struct mt2701_soc_variants mt2701_soc_v2 = {
+ .has_one_heart_mode = true,
+ .i2s_num = 4,
+};
+
static const struct of_device_id mt2701_afe_pcm_dt_match[] = {
- { .compatible = "mediatek,mt2701-audio", },
+ { .compatible = "mediatek,mt2701-audio", .data = &mt2701_soc_v1 },
+ { .compatible = "mediatek,mt7622-audio", .data = &mt2701_soc_v2 },
{},
};
MODULE_DEVICE_TABLE(of, mt2701_afe_pcm_dt_match);
diff --git a/sound/soc/mediatek/mt2701/mt2701-reg.h b/sound/soc/mediatek/mt2701/mt2701-reg.h
index 18e6769..dbe7d60 100644
--- a/sound/soc/mediatek/mt2701/mt2701-reg.h
+++ b/sound/soc/mediatek/mt2701/mt2701-reg.h
@@ -138,6 +138,7 @@
#define ASYS_I2S_CON_FS_SET(x) ((x) << 8)
#define ASYS_I2S_CON_RESET (0x1 << 30)
#define ASYS_I2S_CON_I2S_EN (0x1 << 0)
+#define ASYS_I2S_CON_ONE_HEART_MODE (0x1 << 16)
#define ASYS_I2S_CON_I2S_COUPLE_MODE (0x1 << 17)
/* 0:EIAJ 1:I2S */
#define ASYS_I2S_CON_I2S_MODE (0x1 << 3)
--
1.9.1
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