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From: Padmanabhan Rajanbabu
To: lgirdwood@gmail.com, broonie@kernel.org, robh+dt@kernel.org,
krzysztof.kozlowski+dt@linaro.org, s.nawrocki@samsung.com,
perex@perex.cz, tiwai@suse.com, pankaj.dubey@samsung.com,
alim.akhtar@samsung.com, rcsekar@samsung.com,
aswani.reddy@samsung.com
Cc: alsa-devel@alsa-project.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
Padmanabhan Rajanbabu
Subject: [PATCH 1/6] ASoC: samsung: i2s: TDM Support for CPU DAI driver
Date: Fri, 14 Oct 2022 15:51:46 +0530
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Add support to configure samsung I2S CPU DAI in TDM mode.
Signed-off-by: Chandrasekar R
Signed-off-by: Padmanabhan Rajanbabu
---
sound/soc/samsung/i2s-regs.h | 15 +++++++
sound/soc/samsung/i2s.c | 84 +++++++++++++++++++++++++++++++++++-
2 files changed, 98 insertions(+), 1 deletion(-)
diff --git a/sound/soc/samsung/i2s-regs.h b/sound/soc/samsung/i2s-regs.h
index b4b5d6053503..cb2be4a3b70b 100644
--- a/sound/soc/samsung/i2s-regs.h
+++ b/sound/soc/samsung/i2s-regs.h
@@ -154,4 +154,19 @@
#define I2SSIZE_TRNMSK (0xffff)
#define I2SSIZE_SHIFT (16)
+#define TDM_LRCLK_WIDTH_SHIFT 12
+#define TDM_LRCLK_WIDTH_MASK 0xFF
+#define TDM_RX_SLOTS_SHIFT 8
+#define TDM_RX_SLOTS_MASK 7
+#define TDM_TX_SLOTS_SHIFT 4
+#define TDM_TX_SLOTS_MASK 7
+#define TDM_MODE_MASK 1
+#define TDM_MODE_SHIFT 1
+#define TDM_MODE_DSPA 0
+#define TDM_MODE_DSPB 1
+#define TDM_ENABLE (1 << 0)
+
+/* stereo default */
+#define TDM_DEFAULT_SLOT_NUM_DIVIDER 2
+
#endif /* __SND_SOC_SAMSUNG_I2S_REGS_H */
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 9505200f3d11..fb806b0af6ab 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -117,6 +117,8 @@ struct samsung_i2s_priv {
struct clk *clk_table[3];
struct clk_onecell_data clk_data;
+ int tdm_slots;
+
/* Spinlock protecting member fields below */
spinlock_t lock;
@@ -625,15 +627,19 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);
struct i2s_dai *i2s = to_info(dai);
int lrp_shift, sdf_shift, sdf_mask, lrp_rlow, mod_slave;
+ int tdm_mod_mask, tdm_mod_shift;
+ u32 tdm = 0, tdm_tmp = 0;
u32 mod, tmp = 0;
unsigned long flags;
lrp_shift = priv->variant_regs->lrp_off;
sdf_shift = priv->variant_regs->sdf_off;
+ tdm_mod_shift = TDM_MODE_SHIFT;
mod_slave = 1 << priv->variant_regs->mss_off;
sdf_mask = MOD_SDF_MASK << sdf_shift;
lrp_rlow = MOD_LR_RLOW << lrp_shift;
+ tdm_mod_mask = TDM_MODE_MASK << tdm_mod_shift;
/* Format is priority */
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
@@ -648,6 +654,20 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
case SND_SOC_DAIFMT_I2S:
tmp |= (MOD_SDF_IIS << sdf_shift);
break;
+ case SND_SOC_DAIFMT_DSP_A:
+ if (!(priv->quirks & QUIRK_SUPPORTS_TDM)) {
+ dev_err(&i2s->pdev->dev, "TDM mode not supported\n");
+ return -EINVAL;
+ }
+ tdm_tmp |= (TDM_MODE_DSPA << tdm_mod_shift);
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ if (!(priv->quirks & QUIRK_SUPPORTS_TDM)) {
+ dev_err(&i2s->pdev->dev, "TDM mode not supported\n");
+ return -EINVAL;
+ }
+ tdm_tmp |= (TDM_MODE_DSPB << tdm_mod_shift);
+ break;
default:
dev_err(&i2s->pdev->dev, "Format not supported\n");
return -EINVAL;
@@ -693,12 +713,17 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
pm_runtime_get_sync(dai->dev);
spin_lock_irqsave(&priv->lock, flags);
mod = readl(priv->addr + I2SMOD);
+
+ if (priv->quirks & QUIRK_SUPPORTS_TDM)
+ tdm = readl(priv->addr + I2STDM);
/*
* Don't change the I2S mode if any controller is active on this
* channel.
*/
if (any_active(i2s) &&
- ((mod & (sdf_mask | lrp_rlow | mod_slave)) != tmp)) {
+ (((mod & (sdf_mask | lrp_rlow | mod_slave)) != tmp) ||
+ ((priv->quirks & QUIRK_SUPPORTS_TDM) &&
+ ((tdm & tdm_mod_mask) != tdm_tmp)))) {
spin_unlock_irqrestore(&priv->lock, flags);
pm_runtime_put(dai->dev);
dev_err(&i2s->pdev->dev,
@@ -706,6 +731,12 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
return -EAGAIN;
}
+ if (priv->quirks & QUIRK_SUPPORTS_TDM) {
+ tdm &= ~(tdm_mod_mask);
+ tdm |= tdm_tmp;
+ writel(tdm, priv->addr + I2STDM);
+ }
+
mod &= ~(sdf_mask | lrp_rlow | mod_slave);
mod |= tmp;
writel(mod, priv->addr + I2SMOD);
@@ -812,6 +843,47 @@ static int i2s_hw_params(struct snd_pcm_substream *substream,
return 0;
}
+static int i2s_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
+ unsigned int rx_mask, int slots, int slot_width)
+{
+ struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);
+ struct i2s_dai *i2s = to_info(dai);
+ u32 tdm = 0, mask = 0, val = 0;
+ unsigned long flags;
+
+ if (!(priv->quirks & QUIRK_SUPPORTS_TDM)) {
+ dev_err(&i2s->pdev->dev, "Invalid request: TDM not enabled\n");
+ return -EINVAL;
+ }
+
+ mask |= (TDM_ENABLE);
+ mask |= (TDM_TX_SLOTS_MASK << TDM_TX_SLOTS_SHIFT);
+ mask |= (TDM_RX_SLOTS_MASK << TDM_RX_SLOTS_SHIFT);
+
+ if (slots) {
+ val |= ((slots-1) & TDM_TX_SLOTS_MASK) << TDM_TX_SLOTS_SHIFT;
+ val |= ((slots-1) & TDM_RX_SLOTS_MASK) << TDM_RX_SLOTS_SHIFT;
+
+ dev_info(&i2s->pdev->dev,
+ "TDM Mode Configured - TX and RX Slots: %d\n", slots);
+
+ val |= TDM_ENABLE;
+
+ priv->tdm_slots = slots;
+ } else {
+ val = 0;
+ priv->tdm_slots = 0;
+ }
+
+ spin_lock_irqsave(&priv->lock, flags);
+ tdm = readl(priv->addr + I2STDM);
+ tdm = (tdm & ~mask) | val;
+ writel(tdm, priv->addr + I2STDM);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return 0;
+}
+
/* We set constraints on the substream according to the version of I2S */
static int i2s_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
@@ -879,6 +951,9 @@ static int config_setup(struct i2s_dai *i2s)
if (!bfs && other)
bfs = other->bfs;
+ if (!bfs && (priv->quirks & QUIRK_SUPPORTS_TDM) && priv->tdm_slots)
+ bfs = blc * priv->tdm_slots;
+
/* Select least possible multiple(2) if no constraint set */
if (!bfs)
bfs = blc * 2;
@@ -899,6 +974,9 @@ static int config_setup(struct i2s_dai *i2s)
rfs = 256;
else
rfs = 384;
+
+ if ((priv->quirks & QUIRK_SUPPORTS_TDM) && priv->tdm_slots)
+ rfs /= (priv->tdm_slots / TDM_DEFAULT_SLOT_NUM_DIVIDER);
}
/* If already setup and running */
@@ -1110,6 +1188,7 @@ static const struct snd_soc_dai_ops samsung_i2s_dai_ops = {
.set_fmt = i2s_set_fmt,
.set_clkdiv = i2s_set_clkdiv,
.set_sysclk = i2s_set_sysclk,
+ .set_tdm_slot = i2s_set_tdm_slot,
.startup = i2s_startup,
.shutdown = i2s_shutdown,
.delay = i2s_delay,
@@ -1464,6 +1543,9 @@ static int samsung_i2s_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "failed to enable clock: %d\n", ret);
return ret;
}
+
+ priv->tdm_slots = 0;
+
pri_dai->dma_playback.addr = regs_base + I2STXD;
pri_dai->dma_capture.addr = regs_base + I2SRXD;
pri_dai->dma_playback.chan_name = "tx";
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From: Padmanabhan Rajanbabu
To: lgirdwood@gmail.com, broonie@kernel.org, robh+dt@kernel.org,
krzysztof.kozlowski+dt@linaro.org, s.nawrocki@samsung.com,
perex@perex.cz, tiwai@suse.com, pankaj.dubey@samsung.com,
alim.akhtar@samsung.com, rcsekar@samsung.com,
aswani.reddy@samsung.com
Cc: alsa-devel@alsa-project.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
Padmanabhan Rajanbabu
Subject: [PATCH 2/6] ASoC: samsung: i2s: configure PSR from sound card
Date: Fri, 14 Oct 2022 15:51:47 +0530
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Currently the prescaler value in samsung I2S dai is calculated by
dividing the peripheral input clock frequency with frame clock
frequency and root clock frequency divider. This prescaler value is
used to divide the input clock to generate root clock (RCLK) from which
frame clock is generated for I2S communication.
However for the platforms which does not have a dedicated audio PLL as
an input clock source, the prescaler divider will not generate accurate
root clock frequency, which inturn affects sampling frequency also.
To overcome this scenario, support has been added to let the sound card
identify right prescaler divider value and configure the prescaler (PSR)
divider directly the from the sound card to achieve near accurate sample
frequencies
Signed-off-by: Padmanabhan Rajanbabu
---
sound/soc/samsung/i2s-regs.h | 2 ++
sound/soc/samsung/i2s.c | 36 ++++++++++++++++++++++++++++++++----
sound/soc/samsung/i2s.h | 1 +
3 files changed, 35 insertions(+), 4 deletions(-)
diff --git a/sound/soc/samsung/i2s-regs.h b/sound/soc/samsung/i2s-regs.h
index cb2be4a3b70b..e2581dc73df2 100644
--- a/sound/soc/samsung/i2s-regs.h
+++ b/sound/soc/samsung/i2s-regs.h
@@ -132,6 +132,8 @@
#define EXYNOS7_MOD_RCLK_192FS 7
#define PSR_PSREN (1 << 15)
+#define PSR_PSVAL_SHIFT 8
+#define PSR_PSVAL_MASK 0x3f
#define FIC_TX2COUNT(x) (((x) >> 24) & 0xf)
#define FIC_TX1COUNT(x) (((x) >> 16) & 0xf)
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index fb806b0af6ab..a96286b27f1d 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -59,10 +59,10 @@ struct i2s_dai {
/* Frame clock */
unsigned frmclk;
/*
- * Specifically requested RCLK, BCLK by machine driver.
+ * Specifically requested RCLK, BCLK and PSR by machine driver.
* 0 indicates CPU driver is free to choose any value.
*/
- unsigned rfs, bfs;
+ unsigned int rfs, bfs, psr;
/* Pointer to the Primary_Fifo if this is Sec_Fifo, NULL otherwise */
struct i2s_dai *pri_dai;
/* Pointer to the Secondary_Fifo if it has one, NULL otherwise */
@@ -389,6 +389,17 @@ static inline int get_blc(struct i2s_dai *i2s)
}
}
+static inline unsigned int get_psval(struct i2s_dai *i2s)
+{
+ struct samsung_i2s_priv *priv = i2s->priv;
+ u32 psr;
+
+ psr = readl(priv->addr + I2SPSR) >> PSR_PSVAL_SHIFT;
+ psr &= PSR_PSVAL_MASK;
+
+ return (psr + 1);
+}
+
/* TX channel control */
static void i2s_txctrl(struct i2s_dai *i2s, int on)
{
@@ -994,7 +1005,11 @@ static int config_setup(struct i2s_dai *i2s)
return 0;
if (!(priv->quirks & QUIRK_NO_MUXPSR)) {
- psr = priv->rclk_srcrate / i2s->frmclk / rfs;
+ if (i2s->psr)
+ psr = i2s->psr;
+ else
+ psr = priv->rclk_srcrate / i2s->frmclk / rfs;
+
writel(((psr - 1) << 8) | PSR_PSREN, priv->addr + I2SPSR);
dev_dbg(&i2s->pdev->dev,
"RCLK_SRC=%luHz PSR=%u, RCLK=%dfs, BCLK=%dfs\n",
@@ -1072,6 +1087,18 @@ static int i2s_set_clkdiv(struct snd_soc_dai *dai,
i2s->bfs = div;
pm_runtime_put(dai->dev);
break;
+ case SAMSUNG_I2S_DIV_RCLK:
+ pm_runtime_get_sync(dai->dev);
+ if ((any_active(i2s) && div && (get_psval(i2s) != div))
+ || (other && other->psr && (other->psr != div))) {
+ pm_runtime_put(dai->dev);
+ dev_err(&i2s->pdev->dev,
+ "%s:%d Other DAI busy\n", __func__, __LINE__);
+ return -EAGAIN;
+ }
+ i2s->psr = div;
+ pm_runtime_put(dai->dev);
+ break;
default:
dev_err(&i2s->pdev->dev,
"Invalid clock divider(%d)\n", div_id);
@@ -1140,9 +1167,10 @@ static int samsung_i2s_dai_probe(struct snd_soc_dai *dai)
other->idma_playback.addr);
}
- /* Reset any constraint on RFS and BFS */
+ /* Reset any constraint on RFS, BFS and PSR*/
i2s->rfs = 0;
i2s->bfs = 0;
+ i2s->psr = 0;
spin_lock_irqsave(&priv->lock, flags);
i2s_txctrl(i2s, 0);
diff --git a/sound/soc/samsung/i2s.h b/sound/soc/samsung/i2s.h
index 78b475ef98d9..e783d33fdfac 100644
--- a/sound/soc/samsung/i2s.h
+++ b/sound/soc/samsung/i2s.h
@@ -13,6 +13,7 @@
#define SAMSUNG_I2S_DAI_SEC "samsung-i2s-sec"
#define SAMSUNG_I2S_DIV_BCLK 1
+#define SAMSUNG_I2S_DIV_RCLK 2
#define SAMSUNG_I2S_RCLKSRC_0 0
#define SAMSUNG_I2S_RCLKSRC_1 1
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From: Padmanabhan Rajanbabu
To: lgirdwood@gmail.com, broonie@kernel.org, robh+dt@kernel.org,
krzysztof.kozlowski+dt@linaro.org, s.nawrocki@samsung.com,
perex@perex.cz, tiwai@suse.com, pankaj.dubey@samsung.com,
alim.akhtar@samsung.com, rcsekar@samsung.com,
aswani.reddy@samsung.com
Cc: alsa-devel@alsa-project.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
Padmanabhan Rajanbabu
Subject: [PATCH 3/6] dt-bindings: sound: Add sound card bindings for Tesla
FSD
Date: Fri, 14 Oct 2022 15:51:48 +0530
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Add dt-binding reference document to configure the DAI link for Tesla
FSD sound card driver.
Signed-off-by: Padmanabhan Rajanbabu
---
.../bindings/sound/tesla,fsd-card.yaml | 158 ++++++++++++++++++
1 file changed, 158 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/tesla,fsd-card.yaml
diff --git a/Documentation/devicetree/bindings/sound/tesla,fsd-card.yaml b/Documentation/devicetree/bindings/sound/tesla,fsd-card.yaml
new file mode 100644
index 000000000000..4bd590f4ee27
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/tesla,fsd-card.yaml
@@ -0,0 +1,158 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright 2022 Samsung Electronics Co. Ltd.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/tesla,fsd-card.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Tesla FSD ASoC sound card driver
+
+maintainers:
+ - Padmanabhan Rajanbabu
+
+description: |
+ This binding describes the node properties and essential DT entries of FSD
+ SoC sound card node
+
+select: false
+
+properties:
+ compatible:
+ enum:
+ - tesla,fsd-sndcard
+
+ model:
+ description: Describes the Name of the sound card
+ $ref: /schemas/types.yaml#/definitions/string
+
+ widgets:
+ description: A list of DAPM widgets in the sound card. Each entry is a pair
+ of strings, the first being the widget name and the second being the
+ widget alias
+ $ref: /schemas/types.yaml#/definitions/string-array
+
+ audio-routing:
+ description: A list of the connections between audio components. Each entry
+ is a pair of strings, the first being the connection's sink, the second
+ being the connection's source
+ $ref: /schemas/types.yaml#/definitions/string-array
+
+ dai-tdm-slot-num:
+ description: Enables TDM mode and specifies the number of TDM slots to be
+ enabled
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1, 2, 3, 4, 5, 6, 7, 8]
+ default: 2
+
+ dai-tdm-slot-width:
+ description: Specifies the slot width of each TDm slot enabled
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [8, 16, 24]
+ default: 16
+
+ dai-link:
+ description: Holds the DAI link data between CPU, Codec and Platform
+ type: object
+ properties:
+ link-name:
+ description: Specifies the name of the DAI link
+ $ref: /schemas/types.yaml#/definitions/string
+
+ dai-format:
+ description: Specifies the serial data format of CPU DAI
+ $ref: /schemas/types.yaml#/definitions/string
+
+ tesla,bitclock-master:
+ description: Specifies the phandle of bitclock master DAI
+ $ref: /schemas/types.yaml#/definitions/phandle
+
+ tesla,frame-master:
+ description: Specifies the phandle of frameclock master DAI
+ $ref: /schemas/types.yaml#/definitions/phandle
+
+ cpu:
+ description: Holds the CPU DAI node and instance
+ type: object
+ properties:
+ sound-dai:
+ description: Specifies the phandle of CPU DAI node
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+
+ required:
+ - sound-dai
+
+ codec:
+ description: Holds the Codec DAI node and instance
+ type: object
+ properties:
+ sound-dai:
+ description: Specifies the phandle of Codec DAI node
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+
+ required:
+ - sound-dai
+
+ required:
+ - link-name
+ - dai-format
+ - tesla,bitclock-master
+ - tesla,frame-master
+ - cpu
+
+dependencies:
+ dai-tdm-slot-width: [ 'dai-tdm-slot-num' ]
+
+required:
+ - compatible
+ - model
+ - dai-link
+
+additionalProperties: false
+
+examples:
+ - |
+ sound {
+ compatible = "tesla,fsd-sndcard";
+ status = "disabled";
+ model = "fsd-i2s";
+
+ primary-dai-link-0 {
+ link-name = "fsd-primary-0";
+ dai-format = "i2s";
+ tesla,bitclock-master = <&tdm_0>;
+ tesla,frame-master = <&tdm_0>;
+ cpu {
+ sound-dai = <&tdm_0 0>;
+ };
+ };
+
+ secondary-dai-link-0 {
+ link-name = "fsd-secondary-0";
+ dai-format = "i2s";
+ tesla,bitclock-master = <&tdm_0>;
+ tesla,frame-master = <&tdm_0>;
+ cpu {
+ sound-dai = <&tdm_0 1>;
+ };
+ };
+
+ primary-dai-link-1 {
+ link-name = "fsd-primary-1";
+ dai-format = "i2s";
+ tesla,bitclock-master = <&tdm_1>;
+ tesla,frame-master = <&tdm_1>;
+ cpu {
+ sound-dai = <&tdm_1 0>;
+ };
+ };
+
+ secondary-dai-link-1 {
+ link-name = "fsd-secondary-1";
+ dai-format = "i2s";
+ tesla,bitclock-master = <&tdm_1>;
+ tesla,frame-master = <&tdm_1>;
+ cpu {
+ sound-dai = <&tdm_1 1>;
+ };
+ };
+ };
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From: Padmanabhan Rajanbabu
To: lgirdwood@gmail.com, broonie@kernel.org, robh+dt@kernel.org,
krzysztof.kozlowski+dt@linaro.org, s.nawrocki@samsung.com,
perex@perex.cz, tiwai@suse.com, pankaj.dubey@samsung.com,
alim.akhtar@samsung.com, rcsekar@samsung.com,
aswani.reddy@samsung.com
Cc: alsa-devel@alsa-project.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
Padmanabhan Rajanbabu
Subject: [PATCH 4/6] ASoC: samsung: fsd: Add FSD soundcard driver
Date: Fri, 14 Oct 2022 15:51:49 +0530
Message-Id: <20221014102151.108539-5-p.rajanbabu@samsung.com>
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References: <20221014102151.108539-1-p.rajanbabu@samsung.com>
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Add a soundcard driver for FSD audio interface to bridge the
CPU DAI of samsung I2S with the codec and platform driver.
Signed-off-by: Padmanabhan Rajanbabu
---
sound/soc/samsung/Kconfig | 12 ++
sound/soc/samsung/Makefile | 2 +
sound/soc/samsung/fsd-card.c | 349 +++++++++++++++++++++++++++++++++++
3 files changed, 363 insertions(+)
create mode 100644 sound/soc/samsung/fsd-card.c
diff --git a/sound/soc/samsung/Kconfig b/sound/soc/samsung/Kconfig
index 2a61e620cd3b..344503522bd3 100644
--- a/sound/soc/samsung/Kconfig
+++ b/sound/soc/samsung/Kconfig
@@ -239,4 +239,16 @@ config SND_SOC_SAMSUNG_MIDAS_WM1811
help
Say Y if you want to add support for SoC audio on the Midas boards.
+config SND_SOC_TESLA_FSD
+ tristate "SoC I2S Audio support for Tesla FSD board"
+ depends on SND_SOC_SAMSUNG
+ select SND_SIMPLE_CARD_UTILS
+ select SND_SAMSUNG_I2S
+ help
+ Say Y if you want to add support for SOC audio on the FSD board.
+ This will select the SND_SIMPLE_CARD_UTILS to use the dummy
+ codec driver, incase the codec node is not specified in the device
+ tree. This sound card driver uses Samsung I2S controller as CPU
+ and platform DAI.
+
endif #SND_SOC_SAMSUNG
diff --git a/sound/soc/samsung/Makefile b/sound/soc/samsung/Makefile
index 398e843f388c..0dad88fdb1a8 100644
--- a/sound/soc/samsung/Makefile
+++ b/sound/soc/samsung/Makefile
@@ -43,6 +43,7 @@ snd-soc-arndale-objs := arndale.o
snd-soc-tm2-wm5110-objs := tm2_wm5110.o
snd-soc-aries-wm8994-objs := aries_wm8994.o
snd-soc-midas-wm1811-objs := midas_wm1811.o
+snd-soc-fsd-objs := fsd-card.o
obj-$(CONFIG_SND_SOC_SAMSUNG_JIVE_WM8750) += snd-soc-jive-wm8750.o
obj-$(CONFIG_SND_SOC_SAMSUNG_NEO1973_WM8753) += snd-soc-neo1973-wm8753.o
@@ -68,3 +69,4 @@ obj-$(CONFIG_SND_SOC_ARNDALE) += snd-soc-arndale.o
obj-$(CONFIG_SND_SOC_SAMSUNG_TM2_WM5110) += snd-soc-tm2-wm5110.o
obj-$(CONFIG_SND_SOC_SAMSUNG_ARIES_WM8994) += snd-soc-aries-wm8994.o
obj-$(CONFIG_SND_SOC_SAMSUNG_MIDAS_WM1811) += snd-soc-midas-wm1811.o
+obj-$(CONFIG_SND_SOC_TESLA_FSD) += snd-soc-fsd.o
diff --git a/sound/soc/samsung/fsd-card.c b/sound/soc/samsung/fsd-card.c
new file mode 100644
index 000000000000..806a4d3b99fd
--- /dev/null
+++ b/sound/soc/samsung/fsd-card.c
@@ -0,0 +1,349 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ALSA SoC Audio Layer - FSD Soundcard driver
+ *
+ * Copyright (c) 2022 Samsung Electronics Co. Ltd.
+ * Padmanabhan Rajanbabu
+ */
+
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include
+#include
+#include
+#include
+#include
+#include
+
+#include "i2s.h"
+#include "i2s-regs.h"
+
+#define FSD_PREFIX "tesla,"
+#define FSD_DAI_SRC_PCLK 3
+#define FSD_DAI_RFS_192 192
+#define FSD_DAI_BFS_48 48
+#define FSD_DAI_BFS_96 96
+#define FSD_DAI_BFS_192 192
+
+struct fsd_card_priv {
+ struct snd_soc_card card;
+ struct snd_soc_dai_link *dai_link;
+ u32 tdm_slots;
+ u32 tdm_slot_width;
+};
+
+static unsigned int fsd_card_get_rfs(unsigned int rate)
+{
+ return FSD_DAI_RFS_192;
+}
+
+static unsigned int fsd_card_get_bfs(unsigned int channels)
+{
+ switch (channels) {
+ case 1:
+ case 2:
+ return FSD_DAI_BFS_48;
+ case 3:
+ case 4:
+ return FSD_DAI_BFS_96;
+ case 5:
+ case 6:
+ case 7:
+ case 8:
+ return FSD_DAI_BFS_192;
+ default:
+ return FSD_DAI_BFS_48;
+ }
+}
+
+static unsigned int fsd_card_get_psr(unsigned int rate)
+{
+ switch (rate) {
+ case 8000: return 43;
+ case 11025: return 31;
+ case 16000: return 21;
+ case 22050: return 16;
+ case 32000: return 11;
+ case 44100: return 8;
+ case 48000: return 7;
+ case 64000: return 5;
+ case 88200: return 4;
+ case 96000: return 4;
+ case 192000: return 2;
+ default: return 1;
+ }
+}
+
+static int fsd_card_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_card *card = rtd->card;
+ struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+ struct snd_soc_dai_link *link = rtd->dai_link;
+ struct fsd_card_priv *priv = snd_soc_card_get_drvdata(card);
+ unsigned int rfs, bfs, psr;
+ int ret = 0, cdclk_dir;
+
+ rfs = fsd_card_get_rfs(params_rate(params));
+ bfs = fsd_card_get_bfs(params_channels(params));
+ psr = fsd_card_get_psr(params_rate(params));
+
+ /* Configure the Root Clock Source */
+ ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_OPCLK,
+ false, FSD_DAI_SRC_PCLK);
+ if (ret < 0) {
+ dev_err(card->dev, "Failed to set OPCLK: %d\n", ret);
+ goto err;
+ }
+
+ ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
+ false, false);
+ if (ret < 0) {
+ dev_err(card->dev, "Failed to set RCLKSRC: %d\n", ret);
+ goto err;
+ }
+
+ /* Set CPU DAI configuration */
+ ret = snd_soc_dai_set_fmt(cpu_dai, link->dai_fmt);
+ if (ret < 0) {
+ dev_err(card->dev, "Failed to set DAIFMT: %d\n", ret);
+ goto err;
+ }
+
+ if (link->dai_fmt & SND_SOC_DAIFMT_CBC_CFC) {
+ cdclk_dir = SND_SOC_CLOCK_OUT;
+ } else if (link->dai_fmt & SND_SOC_DAIFMT_CBP_CFP) {
+ cdclk_dir = SND_SOC_CLOCK_IN;
+ } else {
+ dev_err(card->dev, "Missing Clock Master information\n");
+ goto err;
+ }
+
+ /* Set Clock Source for CDCLK */
+ ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
+ rfs, cdclk_dir);
+ if (ret < 0) {
+ dev_err(card->dev, "Failed to set CDCLK: %d\n", ret);
+ goto err;
+ }
+
+ ret = snd_soc_dai_set_clkdiv(cpu_dai, SAMSUNG_I2S_DIV_RCLK, psr);
+ if (ret < 0) {
+ dev_err(card->dev, "Failed to set PSR: %d\n", ret);
+ goto err;
+ }
+
+ ret = snd_soc_dai_set_clkdiv(cpu_dai, SAMSUNG_I2S_DIV_BCLK, bfs);
+ if (ret < 0) {
+ dev_err(card->dev, "Failed to set BCLK: %d\n", ret);
+ goto err;
+ }
+
+ if (priv->tdm_slots) {
+ ret = snd_soc_dai_set_tdm_slot(cpu_dai, false, false,
+ priv->tdm_slots, priv->tdm_slot_width);
+ if (ret < 0) {
+ dev_err(card->dev,
+ "Failed to configure in TDM mode:%d\n", ret);
+ goto err;
+ }
+ }
+
+err:
+ return ret;
+}
+
+static const struct snd_soc_ops fsd_card_ops = {
+ .hw_params = fsd_card_hw_params,
+};
+
+static struct fsd_card_priv *fsd_card_parse_of(struct snd_soc_card *card)
+{
+ struct fsd_card_priv *priv;
+ struct snd_soc_dai_link *link;
+ struct device *dev = card->dev;
+ struct device_node *node = dev->of_node;
+ struct device_node *np, *cpu_node, *codec_node;
+ struct snd_soc_dai_link_component *dlc;
+ int ret, id = 0, num_links;
+
+ ret = snd_soc_of_parse_card_name(card, "model");
+ if (ret) {
+ dev_err(dev, "Error parsing card name: %d\n", ret);
+ return ERR_PTR(ret);
+ }
+
+ if (of_property_read_bool(dev->of_node, "widgets")) {
+ ret = snd_soc_of_parse_audio_simple_widgets(card, "widgets");
+ if (ret)
+ return ERR_PTR(ret);
+ }
+
+ /* Add DAPM routes to the card */
+ if (of_property_read_bool(node, "audio-routing")) {
+ ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
+ if (ret)
+ return ERR_PTR(ret);
+ }
+
+ num_links = of_get_child_count(node);
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return ERR_PTR(-ENOMEM);
+
+ priv->dai_link = devm_kzalloc(dev, num_links * sizeof(*priv->dai_link),
+ GFP_KERNEL);
+ if (!priv->dai_link)
+ return ERR_PTR(-ENOMEM);
+
+ priv->tdm_slots = 0;
+ priv->tdm_slot_width = 0;
+
+ snd_soc_of_parse_tdm_slot(node, NULL, NULL, &priv->tdm_slots,
+ &priv->tdm_slot_width);
+
+ link = priv->dai_link;
+
+ for_each_child_of_node(node, np) {
+ dlc = devm_kzalloc(dev, 2 * sizeof(*dlc), GFP_KERNEL);
+ if (!dlc)
+ return ERR_PTR(-ENOMEM);
+
+ link->id = id;
+ link->cpus = &dlc[0];
+ link->platforms = &dlc[1];
+ link->num_cpus = 1;
+ link->num_codecs = 1;
+ link->num_platforms = 1;
+
+ cpu_node = of_get_child_by_name(np, "cpu");
+ if (!cpu_node) {
+ dev_err(dev, "Missing CPU/Codec node\n");
+ ret = -EINVAL;
+ goto err_cpu_node;
+ }
+
+ ret = snd_soc_of_get_dai_link_cpus(dev, cpu_node, link);
+ if (ret < 0) {
+ dev_err(dev, "Error Parsing CPU DAI name\n");
+ goto err_cpu_name;
+ }
+
+ link->platforms->of_node = link->cpus->of_node;
+
+ codec_node = of_get_child_by_name(np, "codec");
+ if (codec_node) {
+ ret = snd_soc_of_get_dai_link_codecs(dev, codec_node,
+ link);
+ if (ret < 0) {
+ dev_err(dev, "Error Parsing Codec DAI name\n");
+ goto err_codec_name;
+ }
+ } else {
+ dlc = devm_kzalloc(dev, sizeof(*dlc), GFP_KERNEL);
+ if (!dlc) {
+ ret = -ENOMEM;
+ goto err_cpu_name;
+ }
+
+ link->codecs = dlc;
+
+ link->codecs->dai_name = "snd-soc-dummy-dai";
+ link->codecs->name = "snd-soc-dummy";
+ link->dynamic = 1;
+
+ snd_soc_dai_link_set_capabilities(link);
+ link->ignore_suspend = 1;
+ link->nonatomic = 1;
+ }
+
+ ret = asoc_simple_parse_daifmt(dev, np, codec_node,
+ FSD_PREFIX, &link->dai_fmt);
+ if (ret)
+ link->dai_fmt = SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBC_CFC |
+ SND_SOC_DAIFMT_I2S;
+
+ ret = of_property_read_string(np, "link-name", &link->name);
+ if (ret) {
+ dev_err(card->dev, "Error Parsing link name\n");
+ goto err_codec_name;
+ }
+
+ link->stream_name = link->name;
+ link->ops = &fsd_card_ops;
+
+ link++;
+ id++;
+
+ of_node_put(cpu_node);
+ of_node_put(codec_node);
+ }
+
+ card->dai_link = priv->dai_link;
+ card->num_links = num_links;
+
+ return priv;
+
+err_codec_name:
+ of_node_put(codec_node);
+err_cpu_name:
+ of_node_put(cpu_node);
+err_cpu_node:
+ of_node_put(np);
+ return ERR_PTR(ret);
+}
+
+static int fsd_platform_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct snd_soc_card *card;
+ struct fsd_card_priv *fsd_priv;
+
+ card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
+ if (!card)
+ return -ENOMEM;
+
+ card->dev = dev;
+ fsd_priv = fsd_card_parse_of(card);
+
+ if (IS_ERR(fsd_priv)) {
+ dev_err(&pdev->dev, "Error Parsing DAI Link: %ld\n",
+ PTR_ERR(fsd_priv));
+ return PTR_ERR(fsd_priv);
+ }
+
+ snd_soc_card_set_drvdata(card, fsd_priv);
+
+ return devm_snd_soc_register_card(&pdev->dev, card);
+}
+
+static const struct of_device_id fsd_device_id[] = {
+ { .compatible = "tesla,fsd-card" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, fsd_device_id);
+
+static struct platform_driver fsd_platform_driver = {
+ .driver = {
+ .name = "fsd-card",
+ .of_match_table = of_match_ptr(fsd_device_id),
+ },
+ .probe = fsd_platform_probe,
+};
+module_platform_driver(fsd_platform_driver);
+
+MODULE_AUTHOR("Padmanabhan Rajanbabu ");
+MODULE_DESCRIPTION("FSD ASoC Soundcard Driver");
+MODULE_LICENSE("GPL");
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From: Padmanabhan Rajanbabu
To: lgirdwood@gmail.com, broonie@kernel.org, robh+dt@kernel.org,
krzysztof.kozlowski+dt@linaro.org, s.nawrocki@samsung.com,
perex@perex.cz, tiwai@suse.com, pankaj.dubey@samsung.com,
alim.akhtar@samsung.com, rcsekar@samsung.com,
aswani.reddy@samsung.com
Cc: alsa-devel@alsa-project.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
Padmanabhan Rajanbabu
Subject: [PATCH 5/6] arm64: dts: fsd: Add I2S DAI node for Tesla FSD
Date: Fri, 14 Oct 2022 15:51:50 +0530
Message-Id: <20221014102151.108539-6-p.rajanbabu@samsung.com>
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Add device tree node for I2S0 and I2S1 CPU DAI instances for Tesla
FSD board
Signed-off-by: Padmanabhan Rajanbabu
---
arch/arm64/boot/dts/tesla/fsd-evb.dts | 8 +++++
arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi | 14 ++++++++
arch/arm64/boot/dts/tesla/fsd.dtsi | 38 ++++++++++++++++++++++
3 files changed, 60 insertions(+)
diff --git a/arch/arm64/boot/dts/tesla/fsd-evb.dts b/arch/arm64/boot/dts/tesla/fsd-evb.dts
index 1db6ddf03f01..c0a4509499ab 100644
--- a/arch/arm64/boot/dts/tesla/fsd-evb.dts
+++ b/arch/arm64/boot/dts/tesla/fsd-evb.dts
@@ -41,3 +41,11 @@
&ufs {
status = "okay";
};
+
+&tdm_0 {
+ status = "okay";
+};
+
+&tdm_1 {
+ status = "okay";
+};
diff --git a/arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi b/arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi
index e3852c946352..ff6f5d4b16dd 100644
--- a/arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi
+++ b/arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi
@@ -339,6 +339,20 @@
samsung,pin-pud = ;
samsung,pin-drv = ;
};
+
+ i2s0_bus: i2s0-bus {
+ samsung,pins = "gpd1-0", "gpd1-1", "gpd1-2", "gpd1-3", "gpd1-4";
+ samsung,pin-function = ;
+ samsung,pin-pud = ;
+ samsung,pin-drv = ;
+ };
+
+ i2s1_bus: i2s1-bus {
+ samsung,pins = "gpd2-0", "gpd2-1", "gpd2-2", "gpd2-3", "gpd2-4";
+ samsung,pin-function = ;
+ samsung,pin-pud = ;
+ samsung,pin-drv = ;
+ };
};
&pinctrl_pmu {
diff --git a/arch/arm64/boot/dts/tesla/fsd.dtsi b/arch/arm64/boot/dts/tesla/fsd.dtsi
index f35bc5a288c2..5decad45a1b6 100644
--- a/arch/arm64/boot/dts/tesla/fsd.dtsi
+++ b/arch/arm64/boot/dts/tesla/fsd.dtsi
@@ -32,6 +32,8 @@
spi0 = &spi_0;
spi1 = &spi_1;
spi2 = &spi_2;
+ tdm0 = &tdm_0;
+ tdm1 = &tdm_1;
};
cpus {
@@ -809,6 +811,42 @@
status = "disabled";
};
+ tdm_0: tdm@140e0000 {
+ compatible = "samsung,exynos7-i2s";
+ reg = <0x0 0x140E0000 0x0 0x100>;
+ interrupts = ;
+ dmas = <&pdma1 14>, <&pdma1 13>, <&pdma1 12>;
+ dma-names = "tx", "rx", "tx-sec";
+ #clock-cells = <1>;
+ #sound-dai-cells = <1>;
+ clocks = <&clock_peric PERIC_HCLK_TDM0>,
+ <&clock_peric PERIC_HCLK_TDM0>,
+ <&clock_peric PERIC_PCLK_TDM0>;
+ clock-names = "i2s_opclk0", "i2s_opclk1", "iis";
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2s0_bus>;
+ samsung,sec-dai-id = <0>;
+ status = "disabled";
+ };
+
+ tdm_1: tdm@140f0000 {
+ compatible = "samsung,exynos7-i2s";
+ reg = <0x0 0x140F0000 0x0 0x100>;
+ interrupts = ;
+ dmas = <&pdma1 17>, <&pdma1 16>, <&pdma1 15>;
+ dma-names = "tx", "rx", "tx-sec";
+ #clock-cells = <1>;
+ #sound-dai-cells = <1>;
+ clocks = <&clock_peric PERIC_HCLK_TDM1>,
+ <&clock_peric PERIC_HCLK_TDM1>,
+ <&clock_peric PERIC_PCLK_TDM1>;
+ clock-names = "i2s_opclk0", "i2s_opclk1", "iis";
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2s1_bus>;
+ samsung,sec-dai-id = <1>;
+ status = "disabled";
+ };
+
timer@10040000 {
compatible = "tesla,fsd-mct", "samsung,exynos4210-mct";
reg = <0x0 0x10040000 0x0 0x800>;
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From: Padmanabhan Rajanbabu
To: lgirdwood@gmail.com, broonie@kernel.org, robh+dt@kernel.org,
krzysztof.kozlowski+dt@linaro.org, s.nawrocki@samsung.com,
perex@perex.cz, tiwai@suse.com, pankaj.dubey@samsung.com,
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Cc: alsa-devel@alsa-project.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
Padmanabhan Rajanbabu
Subject: [PATCH 6/6] arm64: dts: fsd: Add sound card node for Tesla FSD
Date: Fri, 14 Oct 2022 15:51:51 +0530
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Add device tree node support for sound card on Tesla FSD board
Signed-off-by: Padmanabhan Rajanbabu
---
arch/arm64/boot/dts/tesla/fsd-evb.dts | 49 +++++++++++++++++++++++++++
arch/arm64/boot/dts/tesla/fsd.dtsi | 3 ++
2 files changed, 52 insertions(+)
diff --git a/arch/arm64/boot/dts/tesla/fsd-evb.dts b/arch/arm64/boot/dts/tesla/fsd-evb.dts
index c0a4509499ab..ecaa3c2e3045 100644
--- a/arch/arm64/boot/dts/tesla/fsd-evb.dts
+++ b/arch/arm64/boot/dts/tesla/fsd-evb.dts
@@ -49,3 +49,52 @@
&tdm_1 {
status = "okay";
};
+
+&sound {
+ compatible = "tesla,fsd-sndcard";
+ status = "okay";
+ model = "fsd-i2s";
+ widgets =
+ "Speaker", "MAIN SPK",
+ "Microphone", "MAIN MIC";
+
+ primary-dai-link-0 {
+ link-name = "fsd-primary-0";
+ dai-format = "i2s";
+ tesla,bitclock-master = <&tdm_0>;
+ tesla,frame-master = <&tdm_0>;
+ cpu {
+ sound-dai = <&tdm_0 0>;
+ };
+ };
+
+ secondary-dai-link-0 {
+ link-name = "fsd-secondary-0";
+ dai-format = "i2s";
+ tesla,bitclock-master = <&tdm_0>;
+ tesla,frame-master = <&tdm_0>;
+ cpu {
+ sound-dai = <&tdm_0 1>;
+ };
+ };
+
+ primary-dai-link-1 {
+ link-name = "fsd-primary-1";
+ dai-format = "i2s";
+ tesla,bitclock-master = <&tdm_1>;
+ tesla,frame-master = <&tdm_1>;
+ cpu {
+ sound-dai = <&tdm_1 0>;
+ };
+ };
+
+ secondary-dai-link-1 {
+ link-name = "fsd-secondary-1";
+ dai-format = "i2s";
+ tesla,bitclock-master = <&tdm_1>;
+ tesla,frame-master = <&tdm_1>;
+ cpu {
+ sound-dai = <&tdm_1 1>;
+ };
+ };
+};
diff --git a/arch/arm64/boot/dts/tesla/fsd.dtsi b/arch/arm64/boot/dts/tesla/fsd.dtsi
index 5decad45a1b6..fc8931f830a7 100644
--- a/arch/arm64/boot/dts/tesla/fsd.dtsi
+++ b/arch/arm64/boot/dts/tesla/fsd.dtsi
@@ -847,6 +847,9 @@
status = "disabled";
};
+ sound: sound {
+ };
+
timer@10040000 {
compatible = "tesla,fsd-mct", "samsung,exynos4210-mct";
reg = <0x0 0x10040000 0x0 0x800>;