[PATCH v3 Resend 00/13] ASoC: dmaengine updates, secondary CPU DAI for Odroid

[PATCH v3 Resend 00/13] ASoC: dmaengine updates, secondary CPU DAI for Odroid

[Sylwester Nawrocki]

This is a rebased version with the build break fixed and added Krzysztof's 
Acks. My apologies, I double checked there is no build errors between patches 
this time.

Below is cover letter text from v2.

This series restores support for the secondary CPU DAI in samsung/i2s.c
driver and adds support for secondary CPU DAI on Odroid boards.

I have added 4 more clean up patches comparing to first version of the
patch set (16/22...19/22).

The first patch adds new platform device for the secondary PCM, I tried to
avoid registering new platform device in probe() as it doesn't play well
with deferred probing but couldn't find a way to avoid that new device,
unique devices are needed to register "PCM" components for each CPU DAI.

Patches 2/21...11/21 are mostly a clean up, following conversion to single
component with multiple DAIs, allowing to reference both primary/secondary
DAI in DT.

The patch set has been tested on Odroid U3, XU3, XU4 and Mini2440
(s3c2440 non-DT) boards.

Changes since v1 ((addressing Krzysztof's review comments):
 - added a comment, whitespace change in patch 1/21
 - dropped unnecessary new line addition from patch 1/21

Sylwester Nawrocki (13):
  ASoC: samsung: i2s: Move SFR pointer to common driver data structure
  ASoC: samsung: i2s: Drop spinlock pointer from i2s_dai data structure
  ASoC: samsung: i2s: Move IP variant data to common driver data
    structure
  ASoC: samsung: i2s: Move quirks data to common driver data structure
  ASoC: samsung: i2s: Get rid of a static spinlock
  ASoC: samsung: odroid: Add support for secondary CPU DAI
  ASoC: samsung: Specify DMA channel names through custom DMA config
  ASoC: samsung: Drop DAI DMA data chan_name assignments
  ASoC: dmaengine: Remove unused
    SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME flag
  ASoC: samsung: i2s: Simplify pri_dai, sec_dai pointers usage
  ASoC: samsung: i2s: Change indentation in SAMSUNG_I2S_FMTS definition
  ASoC: samsung: i2s: Comments clean up
  ASoC: samsung: i2s: Convert to SPDX License Indentifier

 include/sound/dmaengine_pcm.h         |   6 -
 sound/soc/samsung/dmaengine.c         |  12 +-
 sound/soc/samsung/i2s.c               | 297 +++++++++++++-------------
 sound/soc/samsung/odroid.c            | 131 ++++++++----
 sound/soc/samsung/s3c2412-i2s.c       |   4 +-
 sound/soc/samsung/s3c24xx-i2s.c       |   4 +-
 sound/soc/soc-generic-dmaengine-pcm.c |  21 +-
 7 files changed, 250 insertions(+), 225 deletions(-)

-- 
2.17.1

[PATCH v3 Resend 00/13] ASoC: dmaengine updates, secondary CPU DAI for Odroid

[Sylwester Nawrocki]

This is a rebased version with the build break fixed and added Krzysztof's 
Acks. My apologies, I double checked there is no build errors between patches 
this time.

Below is cover letter text from v2.

This series restores support for the secondary CPU DAI in samsung/i2s.c
driver and adds support for secondary CPU DAI on Odroid boards.

I have added 4 more clean up patches comparing to first version of the
patch set (16/22...19/22).

The first patch adds new platform device for the secondary PCM, I tried to
avoid registering new platform device in probe() as it doesn't play well
with deferred probing but couldn't find a way to avoid that new device,
unique devices are needed to register "PCM" components for each CPU DAI.

Patches 2/21...11/21 are mostly a clean up, following conversion to single
component with multiple DAIs, allowing to reference both primary/secondary
DAI in DT.

The patch set has been tested on Odroid U3, XU3, XU4 and Mini2440
(s3c2440 non-DT) boards.

Changes since v1 ((addressing Krzysztof's review comments):
 - added a comment, whitespace change in patch 1/21
 - dropped unnecessary new line addition from patch 1/21

Sylwester Nawrocki (13):
  ASoC: samsung: i2s: Move SFR pointer to common driver data structure
  ASoC: samsung: i2s: Drop spinlock pointer from i2s_dai data structure
  ASoC: samsung: i2s: Move IP variant data to common driver data
    structure
  ASoC: samsung: i2s: Move quirks data to common driver data structure
  ASoC: samsung: i2s: Get rid of a static spinlock
  ASoC: samsung: odroid: Add support for secondary CPU DAI
  ASoC: samsung: Specify DMA channel names through custom DMA config
  ASoC: samsung: Drop DAI DMA data chan_name assignments
  ASoC: dmaengine: Remove unused
    SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME flag
  ASoC: samsung: i2s: Simplify pri_dai, sec_dai pointers usage
  ASoC: samsung: i2s: Change indentation in SAMSUNG_I2S_FMTS definition
  ASoC: samsung: i2s: Comments clean up
  ASoC: samsung: i2s: Convert to SPDX License Indentifier

 include/sound/dmaengine_pcm.h         |   6 -
 sound/soc/samsung/dmaengine.c         |  12 +-
 sound/soc/samsung/i2s.c               | 297 +++++++++++++-------------
 sound/soc/samsung/odroid.c            | 131 ++++++++----
 sound/soc/samsung/s3c2412-i2s.c       |   4 +-
 sound/soc/samsung/s3c24xx-i2s.c       |   4 +-
 sound/soc/soc-generic-dmaengine-pcm.c |  21 +-
 7 files changed, 250 insertions(+), 225 deletions(-)

-- 
2.17.1

[PATCH v3 Resend 01/13] ASoC: samsung: i2s: Move SFR pointer to common driver data structure

[Sylwester Nawrocki]

The SFR region is common for both DAIs so move related data structure
field from struct i2s_dai to the common driver data structure.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 sound/soc/samsung/i2s.c | 106 ++++++++++++++++++++++------------------
 1 file changed, 59 insertions(+), 47 deletions(-)

diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 72f0cb7abb30..3f8955608a94 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -60,8 +60,7 @@ struct samsung_i2s_dai_data {
 struct i2s_dai {
 	/* Platform device for this DAI */
 	struct platform_device *pdev;
-	/* Memory mapped SFR region */
-	void __iomem	*addr;
+
 	/* Frame Clock */
 	unsigned frmclk;
 	/*
@@ -100,6 +99,9 @@ struct samsung_i2s_priv {
 	struct platform_device *pdev;
 	struct platform_device *pdev_sec;
 
+	/* Memory mapped SFR region */
+	void __iomem *addr;
+
 	/* Spinlock protecting access to the device's registers */
 	spinlock_t spinlock;
 
@@ -143,7 +145,9 @@ static inline bool is_secondary(struct i2s_dai *i2s)
 /* If operating in SoC-Slave mode */
 static inline bool is_slave(struct i2s_dai *i2s)
 {
-	u32 mod = readl(i2s->addr + I2SMOD);
+	struct samsung_i2s_priv *priv = i2s->priv;
+
+	u32 mod = readl(priv->addr + I2SMOD);
 	return (mod & (1 << i2s->variant_regs->mss_off)) ? true : false;
 }
 
@@ -155,7 +159,7 @@ static inline bool tx_active(struct i2s_dai *i2s)
 	if (!i2s)
 		return false;
 
-	active = readl(i2s->addr + I2SCON);
+	active = readl(i2s->priv->addr + I2SCON);
 
 	if (is_secondary(i2s))
 		active &= CON_TXSDMA_ACTIVE;
@@ -193,7 +197,7 @@ static inline bool rx_active(struct i2s_dai *i2s)
 	if (!i2s)
 		return false;
 
-	active = readl(i2s->addr + I2SCON) & CON_RXDMA_ACTIVE;
+	active = readl(i2s->priv->addr + I2SCON) & CON_RXDMA_ACTIVE;
 
 	return active ? true : false;
 }
@@ -256,8 +260,10 @@ static inline bool is_manager(struct i2s_dai *i2s)
 /* Read RCLK of I2S (in multiples of LRCLK) */
 static inline unsigned get_rfs(struct i2s_dai *i2s)
 {
+	struct samsung_i2s_priv *priv = i2s->priv;
 	u32 rfs;
-	rfs = readl(i2s->addr + I2SMOD) >> i2s->variant_regs->rfs_off;
+
+	rfs = readl(priv->addr + I2SMOD) >> i2s->variant_regs->rfs_off;
 	rfs &= i2s->variant_regs->rfs_mask;
 
 	switch (rfs) {
@@ -275,7 +281,8 @@ static inline unsigned get_rfs(struct i2s_dai *i2s)
 /* Write RCLK of I2S (in multiples of LRCLK) */
 static inline void set_rfs(struct i2s_dai *i2s, unsigned rfs)
 {
-	u32 mod = readl(i2s->addr + I2SMOD);
+	struct samsung_i2s_priv *priv = i2s->priv;
+	u32 mod = readl(priv->addr + I2SMOD);
 	int rfs_shift = i2s->variant_regs->rfs_off;
 
 	mod &= ~(i2s->variant_regs->rfs_mask << rfs_shift);
@@ -307,14 +314,16 @@ static inline void set_rfs(struct i2s_dai *i2s, unsigned rfs)
 		break;
 	}
 
-	writel(mod, i2s->addr + I2SMOD);
+	writel(mod, priv->addr + I2SMOD);
 }
 
 /* Read Bit-Clock of I2S (in multiples of LRCLK) */
 static inline unsigned get_bfs(struct i2s_dai *i2s)
 {
+	struct samsung_i2s_priv *priv = i2s->priv;
 	u32 bfs;
-	bfs = readl(i2s->addr + I2SMOD) >> i2s->variant_regs->bfs_off;
+
+	bfs = readl(priv->addr + I2SMOD) >> i2s->variant_regs->bfs_off;
 	bfs &= i2s->variant_regs->bfs_mask;
 
 	switch (bfs) {
@@ -333,7 +342,8 @@ static inline unsigned get_bfs(struct i2s_dai *i2s)
 /* Write Bit-Clock of I2S (in multiples of LRCLK) */
 static inline void set_bfs(struct i2s_dai *i2s, unsigned bfs)
 {
-	u32 mod = readl(i2s->addr + I2SMOD);
+	struct samsung_i2s_priv *priv = i2s->priv;
+	u32 mod = readl(priv->addr + I2SMOD);
 	int tdm = i2s->quirks & QUIRK_SUPPORTS_TDM;
 	int bfs_shift = i2s->variant_regs->bfs_off;
 
@@ -378,13 +388,13 @@ static inline void set_bfs(struct i2s_dai *i2s, unsigned bfs)
 		return;
 	}
 
-	writel(mod, i2s->addr + I2SMOD);
+	writel(mod, priv->addr + I2SMOD);
 }
 
 /* Sample-Size */
 static inline int get_blc(struct i2s_dai *i2s)
 {
-	int blc = readl(i2s->addr + I2SMOD);
+	int blc = readl(i2s->priv->addr + I2SMOD);
 
 	blc = (blc >> 13) & 0x3;
 
@@ -398,7 +408,8 @@ static inline int get_blc(struct i2s_dai *i2s)
 /* TX Channel Control */
 static void i2s_txctrl(struct i2s_dai *i2s, int on)
 {
-	void __iomem *addr = i2s->addr;
+	struct samsung_i2s_priv *priv = i2s->priv;
+	void __iomem *addr = priv->addr;
 	int txr_off = i2s->variant_regs->txr_off;
 	u32 con = readl(addr + I2SCON);
 	u32 mod = readl(addr + I2SMOD) & ~(3 << txr_off);
@@ -448,7 +459,8 @@ static void i2s_txctrl(struct i2s_dai *i2s, int on)
 /* RX Channel Control */
 static void i2s_rxctrl(struct i2s_dai *i2s, int on)
 {
-	void __iomem *addr = i2s->addr;
+	struct samsung_i2s_priv *priv = i2s->priv;
+	void __iomem *addr = priv->addr;
 	int txr_off = i2s->variant_regs->txr_off;
 	u32 con = readl(addr + I2SCON);
 	u32 mod = readl(addr + I2SMOD) & ~(3 << txr_off);
@@ -485,9 +497,9 @@ static inline void i2s_fifo(struct i2s_dai *i2s, u32 flush)
 		return;
 
 	if (is_secondary(i2s))
-		fic = i2s->addr + I2SFICS;
+		fic = i2s->priv->addr + I2SFICS;
 	else
-		fic = i2s->addr + I2SFIC;
+		fic = i2s->priv->addr + I2SFIC;
 
 	/* Flush the FIFO */
 	writel(readl(fic) | flush, fic);
@@ -516,7 +528,7 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id, unsigned int rfs,
 	pm_runtime_get_sync(dai->dev);
 
 	spin_lock_irqsave(i2s->lock, flags);
-	mod = readl(i2s->addr + I2SMOD);
+	mod = readl(priv->addr + I2SMOD);
 	spin_unlock_irqrestore(i2s->lock, flags);
 
 	switch (clk_id) {
@@ -613,9 +625,9 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id, unsigned int rfs,
 	}
 
 	spin_lock_irqsave(i2s->lock, flags);
-	mod = readl(i2s->addr + I2SMOD);
+	mod = readl(priv->addr + I2SMOD);
 	mod = (mod & ~mask) | val;
-	writel(mod, i2s->addr + I2SMOD);
+	writel(mod, priv->addr + I2SMOD);
 	spin_unlock_irqrestore(i2s->lock, flags);
 done:
 	pm_runtime_put(dai->dev);
@@ -698,7 +710,7 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 
 	pm_runtime_get_sync(dai->dev);
 	spin_lock_irqsave(i2s->lock, flags);
-	mod = readl(i2s->addr + I2SMOD);
+	mod = readl(priv->addr + I2SMOD);
 	/*
 	 * Don't change the I2S mode if any controller is active on this
 	 * channel.
@@ -714,7 +726,7 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 
 	mod &= ~(sdf_mask | lrp_rlow | mod_slave);
 	mod |= tmp;
-	writel(mod, i2s->addr + I2SMOD);
+	writel(mod, priv->addr + I2SMOD);
 	spin_unlock_irqrestore(i2s->lock, flags);
 	pm_runtime_put(dai->dev);
 
@@ -801,9 +813,9 @@ static int i2s_hw_params(struct snd_pcm_substream *substream,
 	}
 
 	spin_lock_irqsave(i2s->lock, flags);
-	mod = readl(i2s->addr + I2SMOD);
+	mod = readl(priv->addr + I2SMOD);
 	mod = (mod & ~mask) | val;
-	writel(mod, i2s->addr + I2SMOD);
+	writel(mod, priv->addr + I2SMOD);
 	spin_unlock_irqrestore(i2s->lock, flags);
 
 	snd_soc_dai_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture);
@@ -837,7 +849,7 @@ static int i2s_startup(struct snd_pcm_substream *substream,
 		i2s->mode |= DAI_MANAGER;
 
 	if (!any_active(i2s) && (i2s->quirks & QUIRK_NEED_RSTCLR))
-		writel(CON_RSTCLR, i2s->addr + I2SCON);
+		writel(CON_RSTCLR, i2s->priv->addr + I2SCON);
 
 	spin_unlock_irqrestore(&lock, flags);
 
@@ -920,7 +932,7 @@ static int config_setup(struct i2s_dai *i2s)
 
 	if (!(i2s->quirks & QUIRK_NO_MUXPSR)) {
 		psr = priv->rclk_srcrate / i2s->frmclk / rfs;
-		writel(((psr - 1) << 8) | PSR_PSREN, i2s->addr + I2SPSR);
+		writel(((psr - 1) << 8) | PSR_PSREN, priv->addr + I2SPSR);
 		dev_dbg(&i2s->pdev->dev,
 			"RCLK_SRC=%luHz PSR=%u, RCLK=%dfs, BCLK=%dfs\n",
 				priv->rclk_srcrate, psr, rfs, bfs);
@@ -1008,8 +1020,9 @@ static int i2s_set_clkdiv(struct snd_soc_dai *dai,
 static snd_pcm_sframes_t
 i2s_delay(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
 {
+	struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);
 	struct i2s_dai *i2s = to_info(dai);
-	u32 reg = readl(i2s->addr + I2SFIC);
+	u32 reg = readl(priv->addr + I2SFIC);
 	snd_pcm_sframes_t delay;
 	const struct samsung_i2s_variant_regs *i2s_regs = i2s->variant_regs;
 
@@ -1018,7 +1031,7 @@ i2s_delay(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
 	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
 		delay = FIC_RXCOUNT(reg);
 	else if (is_secondary(i2s))
-		delay = FICS_TXCOUNT(readl(i2s->addr + I2SFICS));
+		delay = FICS_TXCOUNT(readl(priv->addr + I2SFICS));
 	else
 		delay = (reg >> i2s_regs->ftx0cnt_off) & 0x7f;
 
@@ -1042,6 +1055,7 @@ static int i2s_resume(struct snd_soc_dai *dai)
 
 static int samsung_i2s_dai_probe(struct snd_soc_dai *dai)
 {
+	struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);
 	struct i2s_dai *i2s = to_info(dai);
 	struct i2s_dai *other = get_other_dai(i2s);
 	unsigned long flags;
@@ -1056,10 +1070,10 @@ static int samsung_i2s_dai_probe(struct snd_soc_dai *dai)
 					   &i2s->dma_capture);
 
 		if (i2s->quirks & QUIRK_NEED_RSTCLR)
-			writel(CON_RSTCLR, i2s->addr + I2SCON);
+			writel(CON_RSTCLR, priv->addr + I2SCON);
 
 		if (i2s->quirks & QUIRK_SUPPORTS_IDMA)
-			idma_reg_addr_init(i2s->addr,
+			idma_reg_addr_init(priv->addr,
 					i2s->sec_dai->idma_playback.addr);
 	}
 
@@ -1086,6 +1100,7 @@ static int samsung_i2s_dai_probe(struct snd_soc_dai *dai)
 
 static int samsung_i2s_dai_remove(struct snd_soc_dai *dai)
 {
+	struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);
 	struct i2s_dai *i2s = to_info(dai);
 	unsigned long flags;
 
@@ -1094,7 +1109,7 @@ static int samsung_i2s_dai_remove(struct snd_soc_dai *dai)
 	if (!is_secondary(i2s)) {
 		if (i2s->quirks & QUIRK_NEED_RSTCLR) {
 			spin_lock_irqsave(i2s->lock, flags);
-			writel(0, i2s->addr + I2SCON);
+			writel(0, priv->addr + I2SCON);
 			spin_unlock_irqrestore(i2s->lock, flags);
 		}
 	}
@@ -1205,11 +1220,10 @@ static int i2s_alloc_dais(struct samsung_i2s_priv *priv,
 static int i2s_runtime_suspend(struct device *dev)
 {
 	struct samsung_i2s_priv *priv = dev_get_drvdata(dev);
-	struct i2s_dai *i2s = samsung_i2s_get_pri_dai(dev);
 
-	priv->suspend_i2smod = readl(i2s->addr + I2SMOD);
-	priv->suspend_i2scon = readl(i2s->addr + I2SCON);
-	priv->suspend_i2spsr = readl(i2s->addr + I2SPSR);
+	priv->suspend_i2smod = readl(priv->addr + I2SMOD);
+	priv->suspend_i2scon = readl(priv->addr + I2SCON);
+	priv->suspend_i2spsr = readl(priv->addr + I2SPSR);
 
 	if (priv->op_clk)
 		clk_disable_unprepare(priv->op_clk);
@@ -1221,7 +1235,6 @@ static int i2s_runtime_suspend(struct device *dev)
 static int i2s_runtime_resume(struct device *dev)
 {
 	struct samsung_i2s_priv *priv = dev_get_drvdata(dev);
-	struct i2s_dai *i2s = samsung_i2s_get_pri_dai(dev);
 	int ret;
 
 	ret = clk_prepare_enable(priv->clk);
@@ -1236,9 +1249,9 @@ static int i2s_runtime_resume(struct device *dev)
 		}
 	}
 
-	writel(priv->suspend_i2scon, i2s->addr + I2SCON);
-	writel(priv->suspend_i2smod, i2s->addr + I2SMOD);
-	writel(priv->suspend_i2spsr, i2s->addr + I2SPSR);
+	writel(priv->suspend_i2scon, priv->addr + I2SCON);
+	writel(priv->suspend_i2smod, priv->addr + I2SMOD);
+	writel(priv->suspend_i2spsr, priv->addr + I2SPSR);
 
 	return 0;
 }
@@ -1296,21 +1309,21 @@ static int i2s_register_clock_provider(struct samsung_i2s_priv *priv)
 
 	if (!(i2s->quirks & QUIRK_NO_MUXPSR)) {
 		/* Activate the prescaler */
-		u32 val = readl(i2s->addr + I2SPSR);
-		writel(val | PSR_PSREN, i2s->addr + I2SPSR);
+		u32 val = readl(priv->addr + I2SPSR);
+		writel(val | PSR_PSREN, priv->addr + I2SPSR);
 
 		priv->clk_table[CLK_I2S_RCLK_SRC] = clk_register_mux(dev,
 				i2s_clk_name[CLK_I2S_RCLK_SRC], p_names,
 				ARRAY_SIZE(p_names),
 				CLK_SET_RATE_NO_REPARENT | CLK_SET_RATE_PARENT,
-				i2s->addr + I2SMOD, reg_info->rclksrc_off,
+				priv->addr + I2SMOD, reg_info->rclksrc_off,
 				1, 0, i2s->lock);
 
 		priv->clk_table[CLK_I2S_RCLK_PSR] = clk_register_divider(dev,
 				i2s_clk_name[CLK_I2S_RCLK_PSR],
 				i2s_clk_name[CLK_I2S_RCLK_SRC],
 				CLK_SET_RATE_PARENT,
-				i2s->addr + I2SPSR, 8, 6, 0, i2s->lock);
+				priv->addr + I2SPSR, 8, 6, 0, i2s->lock);
 
 		p_names[0] = i2s_clk_name[CLK_I2S_RCLK_PSR];
 		priv->clk_data.clk_num = 2;
@@ -1319,7 +1332,7 @@ static int i2s_register_clock_provider(struct samsung_i2s_priv *priv)
 	priv->clk_table[CLK_I2S_CDCLK] = clk_register_gate(dev,
 				i2s_clk_name[CLK_I2S_CDCLK], p_names[0],
 				CLK_SET_RATE_PARENT,
-				i2s->addr + I2SMOD, reg_info->cdclkcon_off,
+				priv->addr + I2SMOD, reg_info->cdclkcon_off,
 				CLK_GATE_SET_TO_DISABLE, i2s->lock);
 
 	priv->clk_data.clk_num += 1;
@@ -1423,9 +1436,9 @@ static int samsung_i2s_probe(struct platform_device *pdev)
 	}
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	pri_dai->addr = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(pri_dai->addr))
-		return PTR_ERR(pri_dai->addr);
+	priv->addr = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(priv->addr))
+		return PTR_ERR(priv->addr);
 
 	regs_base = res->start;
 
@@ -1472,7 +1485,6 @@ static int samsung_i2s_probe(struct platform_device *pdev)
 		}
 
 		sec_dai->dma_playback.addr_width = 4;
-		sec_dai->addr = pri_dai->addr;
 		sec_dai->quirks = quirks;
 		sec_dai->idma_playback.addr = idma_addr;
 		sec_dai->pri_dai = pri_dai;
-- 
2.17.1

[PATCH v3 Resend 02/13] ASoC: samsung: i2s: Drop spinlock pointer from i2s_dai data structure

[Sylwester Nawrocki]

As we now have the 'priv' pointer in most of the places we can use
priv->lock directly, dropping extra indirection in the SFR region
spinlock access.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 sound/soc/samsung/i2s.c | 51 +++++++++++++++++++----------------------
 1 file changed, 24 insertions(+), 27 deletions(-)

diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 3f8955608a94..cf8615e23879 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -87,8 +87,6 @@ struct i2s_dai {
 	u32	quirks;
 	const struct samsung_i2s_variant_regs *variant_regs;
 
-	spinlock_t *lock;
-
 	struct samsung_i2s_priv *priv;
 };
 
@@ -103,7 +101,7 @@ struct samsung_i2s_priv {
 	void __iomem *addr;
 
 	/* Spinlock protecting access to the device's registers */
-	spinlock_t spinlock;
+	spinlock_t lock;
 
 	/* CPU DAIs and their corresponding drivers */
 	struct i2s_dai *dai;
@@ -527,9 +525,9 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id, unsigned int rfs,
 
 	pm_runtime_get_sync(dai->dev);
 
-	spin_lock_irqsave(i2s->lock, flags);
+	spin_lock_irqsave(&priv->lock, flags);
 	mod = readl(priv->addr + I2SMOD);
-	spin_unlock_irqrestore(i2s->lock, flags);
+	spin_unlock_irqrestore(&priv->lock, flags);
 
 	switch (clk_id) {
 	case SAMSUNG_I2S_OPCLK:
@@ -624,11 +622,11 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id, unsigned int rfs,
 		goto err;
 	}
 
-	spin_lock_irqsave(i2s->lock, flags);
+	spin_lock_irqsave(&priv->lock, flags);
 	mod = readl(priv->addr + I2SMOD);
 	mod = (mod & ~mask) | val;
 	writel(mod, priv->addr + I2SMOD);
-	spin_unlock_irqrestore(i2s->lock, flags);
+	spin_unlock_irqrestore(&priv->lock, flags);
 done:
 	pm_runtime_put(dai->dev);
 
@@ -709,7 +707,7 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 	}
 
 	pm_runtime_get_sync(dai->dev);
-	spin_lock_irqsave(i2s->lock, flags);
+	spin_lock_irqsave(&priv->lock, flags);
 	mod = readl(priv->addr + I2SMOD);
 	/*
 	 * Don't change the I2S mode if any controller is active on this
@@ -717,7 +715,7 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 	 */
 	if (any_active(i2s) &&
 		((mod & (sdf_mask | lrp_rlow | mod_slave)) != tmp)) {
-		spin_unlock_irqrestore(i2s->lock, flags);
+		spin_unlock_irqrestore(&priv->lock, flags);
 		pm_runtime_put(dai->dev);
 		dev_err(&i2s->pdev->dev,
 				"%s:%d Other DAI busy\n", __func__, __LINE__);
@@ -727,7 +725,7 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 	mod &= ~(sdf_mask | lrp_rlow | mod_slave);
 	mod |= tmp;
 	writel(mod, priv->addr + I2SMOD);
-	spin_unlock_irqrestore(i2s->lock, flags);
+	spin_unlock_irqrestore(&priv->lock, flags);
 	pm_runtime_put(dai->dev);
 
 	return 0;
@@ -812,11 +810,11 @@ static int i2s_hw_params(struct snd_pcm_substream *substream,
 		return -EINVAL;
 	}
 
-	spin_lock_irqsave(i2s->lock, flags);
+	spin_lock_irqsave(&priv->lock, flags);
 	mod = readl(priv->addr + I2SMOD);
 	mod = (mod & ~mask) | val;
 	writel(mod, priv->addr + I2SMOD);
-	spin_unlock_irqrestore(i2s->lock, flags);
+	spin_unlock_irqrestore(&priv->lock, flags);
 
 	snd_soc_dai_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture);
 
@@ -944,6 +942,7 @@ static int config_setup(struct i2s_dai *i2s)
 static int i2s_trigger(struct snd_pcm_substream *substream,
 	int cmd, struct snd_soc_dai *dai)
 {
+	struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);
 	int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct i2s_dai *i2s = to_info(rtd->cpu_dai);
@@ -954,10 +953,10 @@ static int i2s_trigger(struct snd_pcm_substream *substream,
 	case SNDRV_PCM_TRIGGER_RESUME:
 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 		pm_runtime_get_sync(dai->dev);
-		spin_lock_irqsave(i2s->lock, flags);
+		spin_lock_irqsave(&priv->lock, flags);
 
 		if (config_setup(i2s)) {
-			spin_unlock_irqrestore(i2s->lock, flags);
+			spin_unlock_irqrestore(&priv->lock, flags);
 			return -EINVAL;
 		}
 
@@ -966,12 +965,12 @@ static int i2s_trigger(struct snd_pcm_substream *substream,
 		else
 			i2s_txctrl(i2s, 1);
 
-		spin_unlock_irqrestore(i2s->lock, flags);
+		spin_unlock_irqrestore(&priv->lock, flags);
 		break;
 	case SNDRV_PCM_TRIGGER_STOP:
 	case SNDRV_PCM_TRIGGER_SUSPEND:
 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
-		spin_lock_irqsave(i2s->lock, flags);
+		spin_lock_irqsave(&priv->lock, flags);
 
 		if (capture) {
 			i2s_rxctrl(i2s, 0);
@@ -981,7 +980,7 @@ static int i2s_trigger(struct snd_pcm_substream *substream,
 			i2s_fifo(i2s, FIC_TXFLUSH);
 		}
 
-		spin_unlock_irqrestore(i2s->lock, flags);
+		spin_unlock_irqrestore(&priv->lock, flags);
 		pm_runtime_put(dai->dev);
 		break;
 	}
@@ -1081,13 +1080,13 @@ static int samsung_i2s_dai_probe(struct snd_soc_dai *dai)
 	i2s->rfs = 0;
 	i2s->bfs = 0;
 
-	spin_lock_irqsave(i2s->lock, flags);
+	spin_lock_irqsave(&priv->lock, flags);
 	i2s_txctrl(i2s, 0);
 	i2s_rxctrl(i2s, 0);
 	i2s_fifo(i2s, FIC_TXFLUSH);
 	i2s_fifo(other, FIC_TXFLUSH);
 	i2s_fifo(i2s, FIC_RXFLUSH);
-	spin_unlock_irqrestore(i2s->lock, flags);
+	spin_unlock_irqrestore(&priv->lock, flags);
 
 	/* Gate CDCLK by default */
 	if (!is_opened(other))
@@ -1108,9 +1107,9 @@ static int samsung_i2s_dai_remove(struct snd_soc_dai *dai)
 
 	if (!is_secondary(i2s)) {
 		if (i2s->quirks & QUIRK_NEED_RSTCLR) {
-			spin_lock_irqsave(i2s->lock, flags);
+			spin_lock_irqsave(&priv->lock, flags);
 			writel(0, priv->addr + I2SCON);
-			spin_unlock_irqrestore(i2s->lock, flags);
+			spin_unlock_irqrestore(&priv->lock, flags);
 		}
 	}
 
@@ -1317,13 +1316,13 @@ static int i2s_register_clock_provider(struct samsung_i2s_priv *priv)
 				ARRAY_SIZE(p_names),
 				CLK_SET_RATE_NO_REPARENT | CLK_SET_RATE_PARENT,
 				priv->addr + I2SMOD, reg_info->rclksrc_off,
-				1, 0, i2s->lock);
+				1, 0, &priv->lock);
 
 		priv->clk_table[CLK_I2S_RCLK_PSR] = clk_register_divider(dev,
 				i2s_clk_name[CLK_I2S_RCLK_PSR],
 				i2s_clk_name[CLK_I2S_RCLK_SRC],
 				CLK_SET_RATE_PARENT,
-				priv->addr + I2SPSR, 8, 6, 0, i2s->lock);
+				priv->addr + I2SPSR, 8, 6, 0, &priv->lock);
 
 		p_names[0] = i2s_clk_name[CLK_I2S_RCLK_PSR];
 		priv->clk_data.clk_num = 2;
@@ -1333,7 +1332,7 @@ static int i2s_register_clock_provider(struct samsung_i2s_priv *priv)
 				i2s_clk_name[CLK_I2S_CDCLK], p_names[0],
 				CLK_SET_RATE_PARENT,
 				priv->addr + I2SMOD, reg_info->cdclkcon_off,
-				CLK_GATE_SET_TO_DISABLE, i2s->lock);
+				CLK_GATE_SET_TO_DISABLE, &priv->lock);
 
 	priv->clk_data.clk_num += 1;
 	priv->clk_data.clks = priv->clk_table;
@@ -1411,8 +1410,7 @@ static int samsung_i2s_probe(struct platform_device *pdev)
 
 	pri_dai = &priv->dai[SAMSUNG_I2S_ID_PRIMARY - 1];
 
-	spin_lock_init(&priv->spinlock);
-	pri_dai->lock = &priv->spinlock;
+	spin_lock_init(&priv->lock);
 
 	if (!np) {
 		if (i2s_pdata == NULL) {
@@ -1474,7 +1472,6 @@ static int samsung_i2s_probe(struct platform_device *pdev)
 	if (quirks & QUIRK_SEC_DAI) {
 		sec_dai = &priv->dai[SAMSUNG_I2S_ID_SECONDARY - 1];
 
-		sec_dai->lock = &priv->spinlock;
 		sec_dai->variant_regs = pri_dai->variant_regs;
 		sec_dai->dma_playback.addr = regs_base + I2STXDS;
 		sec_dai->dma_playback.chan_name = "tx-sec";
-- 
2.17.1

[PATCH v3 Resend 03/13] ASoC: samsung: i2s: Move IP variant data to common driver data structure

[Sylwester Nawrocki]

The IP variant data is another thing common for both DAIs, move it
to the driver's common data structure.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 sound/soc/samsung/i2s.c | 42 ++++++++++++++++++++---------------------
 1 file changed, 21 insertions(+), 21 deletions(-)

diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index cf8615e23879..0c4c4de8c7e9 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -85,7 +85,6 @@ struct i2s_dai {
 	struct snd_dmaengine_dai_dma_data idma_playback;
 	dma_filter_fn filter;
 	u32	quirks;
-	const struct samsung_i2s_variant_regs *variant_regs;
 
 	struct samsung_i2s_priv *priv;
 };
@@ -122,6 +121,8 @@ struct samsung_i2s_priv {
 	u32 suspend_i2scon;
 	u32 suspend_i2spsr;
 
+	const struct samsung_i2s_variant_regs *variant_regs;
+
 	/* The clock provider's data */
 	struct clk *clk_table[3];
 	struct clk_onecell_data clk_data;
@@ -146,7 +147,7 @@ static inline bool is_slave(struct i2s_dai *i2s)
 	struct samsung_i2s_priv *priv = i2s->priv;
 
 	u32 mod = readl(priv->addr + I2SMOD);
-	return (mod & (1 << i2s->variant_regs->mss_off)) ? true : false;
+	return (mod & (1 << priv->variant_regs->mss_off)) ? true : false;
 }
 
 /* If this interface of the controller is transmitting data */
@@ -261,8 +262,8 @@ static inline unsigned get_rfs(struct i2s_dai *i2s)
 	struct samsung_i2s_priv *priv = i2s->priv;
 	u32 rfs;
 
-	rfs = readl(priv->addr + I2SMOD) >> i2s->variant_regs->rfs_off;
-	rfs &= i2s->variant_regs->rfs_mask;
+	rfs = readl(priv->addr + I2SMOD) >> priv->variant_regs->rfs_off;
+	rfs &= priv->variant_regs->rfs_mask;
 
 	switch (rfs) {
 	case 7: return 192;
@@ -281,9 +282,9 @@ static inline void set_rfs(struct i2s_dai *i2s, unsigned rfs)
 {
 	struct samsung_i2s_priv *priv = i2s->priv;
 	u32 mod = readl(priv->addr + I2SMOD);
-	int rfs_shift = i2s->variant_regs->rfs_off;
+	int rfs_shift = priv->variant_regs->rfs_off;
 
-	mod &= ~(i2s->variant_regs->rfs_mask << rfs_shift);
+	mod &= ~(priv->variant_regs->rfs_mask << rfs_shift);
 
 	switch (rfs) {
 	case 192:
@@ -321,8 +322,8 @@ static inline unsigned get_bfs(struct i2s_dai *i2s)
 	struct samsung_i2s_priv *priv = i2s->priv;
 	u32 bfs;
 
-	bfs = readl(priv->addr + I2SMOD) >> i2s->variant_regs->bfs_off;
-	bfs &= i2s->variant_regs->bfs_mask;
+	bfs = readl(priv->addr + I2SMOD) >> priv->variant_regs->bfs_off;
+	bfs &= priv->variant_regs->bfs_mask;
 
 	switch (bfs) {
 	case 8: return 256;
@@ -343,7 +344,7 @@ static inline void set_bfs(struct i2s_dai *i2s, unsigned bfs)
 	struct samsung_i2s_priv *priv = i2s->priv;
 	u32 mod = readl(priv->addr + I2SMOD);
 	int tdm = i2s->quirks & QUIRK_SUPPORTS_TDM;
-	int bfs_shift = i2s->variant_regs->bfs_off;
+	int bfs_shift = priv->variant_regs->bfs_off;
 
 	/* Non-TDM I2S controllers do not support BCLK > 48 * FS */
 	if (!tdm && bfs > 48) {
@@ -351,7 +352,7 @@ static inline void set_bfs(struct i2s_dai *i2s, unsigned bfs)
 		return;
 	}
 
-	mod &= ~(i2s->variant_regs->bfs_mask << bfs_shift);
+	mod &= ~(priv->variant_regs->bfs_mask << bfs_shift);
 
 	switch (bfs) {
 	case 48:
@@ -408,7 +409,7 @@ static void i2s_txctrl(struct i2s_dai *i2s, int on)
 {
 	struct samsung_i2s_priv *priv = i2s->priv;
 	void __iomem *addr = priv->addr;
-	int txr_off = i2s->variant_regs->txr_off;
+	int txr_off = priv->variant_regs->txr_off;
 	u32 con = readl(addr + I2SCON);
 	u32 mod = readl(addr + I2SMOD) & ~(3 << txr_off);
 
@@ -459,7 +460,7 @@ static void i2s_rxctrl(struct i2s_dai *i2s, int on)
 {
 	struct samsung_i2s_priv *priv = i2s->priv;
 	void __iomem *addr = priv->addr;
-	int txr_off = i2s->variant_regs->txr_off;
+	int txr_off = priv->variant_regs->txr_off;
 	u32 con = readl(addr + I2SCON);
 	u32 mod = readl(addr + I2SMOD) & ~(3 << txr_off);
 
@@ -516,7 +517,7 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id, unsigned int rfs,
 	struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);
 	struct i2s_dai *i2s = to_info(dai);
 	struct i2s_dai *other = get_other_dai(i2s);
-	const struct samsung_i2s_variant_regs *i2s_regs = i2s->variant_regs;
+	const struct samsung_i2s_variant_regs *i2s_regs = priv->variant_regs;
 	unsigned int cdcon_mask = 1 << i2s_regs->cdclkcon_off;
 	unsigned int rsrc_mask = 1 << i2s_regs->rclksrc_off;
 	u32 mod, mask, val = 0;
@@ -644,9 +645,9 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 	u32 mod, tmp = 0;
 	unsigned long flags;
 
-	lrp_shift = i2s->variant_regs->lrp_off;
-	sdf_shift = i2s->variant_regs->sdf_off;
-	mod_slave = 1 << i2s->variant_regs->mss_off;
+	lrp_shift = priv->variant_regs->lrp_off;
+	sdf_shift = priv->variant_regs->sdf_off;
+	mod_slave = 1 << priv->variant_regs->mss_off;
 
 	sdf_mask = MOD_SDF_MASK << sdf_shift;
 	lrp_rlow = MOD_LR_RLOW << lrp_shift;
@@ -1023,7 +1024,6 @@ i2s_delay(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
 	struct i2s_dai *i2s = to_info(dai);
 	u32 reg = readl(priv->addr + I2SFIC);
 	snd_pcm_sframes_t delay;
-	const struct samsung_i2s_variant_regs *i2s_regs = i2s->variant_regs;
 
 	WARN_ON(!pm_runtime_active(dai->dev));
 
@@ -1032,7 +1032,7 @@ i2s_delay(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
 	else if (is_secondary(i2s))
 		delay = FICS_TXCOUNT(readl(priv->addr + I2SFICS));
 	else
-		delay = (reg >> i2s_regs->ftx0cnt_off) & 0x7f;
+		delay = (reg >> priv->variant_regs->ftx0cnt_off) & 0x7f;
 
 	return delay;
 }
@@ -1281,7 +1281,7 @@ static int i2s_register_clock_provider(struct samsung_i2s_priv *priv)
 	const char *p_names[2] = { NULL };
 	struct device *dev = &priv->pdev->dev;
 	struct i2s_dai *i2s = samsung_i2s_get_pri_dai(dev);
-	const struct samsung_i2s_variant_regs *reg_info = i2s->variant_regs;
+	const struct samsung_i2s_variant_regs *reg_info = priv->variant_regs;
 	const char *i2s_clk_name[ARRAY_SIZE(i2s_clk_desc)];
 	struct clk *rclksrc;
 	int ret, i;
@@ -1400,6 +1400,8 @@ static int samsung_i2s_probe(struct platform_device *pdev)
 	if (!priv)
 		return -ENOMEM;
 
+	priv->variant_regs = i2s_dai_data->i2s_variant_regs;
+
 	quirks = np ? i2s_dai_data->quirks : i2s_pdata->type.quirks;
 	num_dais = (quirks & QUIRK_SEC_DAI) ? 2 : 1;
 	priv->pdev = pdev;
@@ -1458,7 +1460,6 @@ static int samsung_i2s_probe(struct platform_device *pdev)
 	pri_dai->dma_playback.addr_width = 4;
 	pri_dai->dma_capture.addr_width = 4;
 	pri_dai->quirks = quirks;
-	pri_dai->variant_regs = i2s_dai_data->i2s_variant_regs;
 	pri_dai->priv = priv;
 
 	if (quirks & QUIRK_PRI_6CHAN)
@@ -1472,7 +1473,6 @@ static int samsung_i2s_probe(struct platform_device *pdev)
 	if (quirks & QUIRK_SEC_DAI) {
 		sec_dai = &priv->dai[SAMSUNG_I2S_ID_SECONDARY - 1];
 
-		sec_dai->variant_regs = pri_dai->variant_regs;
 		sec_dai->dma_playback.addr = regs_base + I2STXDS;
 		sec_dai->dma_playback.chan_name = "tx-sec";
 
-- 
2.17.1

[PATCH v3 Resend 04/13] ASoC: samsung: i2s: Move quirks data to common driver data structure

[Sylwester Nawrocki]

The quirk flags are common for the primary and the secondary DAI
so move respective field from struct i2s_dai to common driver data
structure.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 sound/soc/samsung/i2s.c | 33 ++++++++++++---------------------
 1 file changed, 12 insertions(+), 21 deletions(-)

diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 0c4c4de8c7e9..8f0af4b0f25a 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -84,7 +84,6 @@ struct i2s_dai {
 	struct snd_dmaengine_dai_dma_data dma_capture;
 	struct snd_dmaengine_dai_dma_data idma_playback;
 	dma_filter_fn filter;
-	u32	quirks;
 
 	struct samsung_i2s_priv *priv;
 };
@@ -122,19 +121,13 @@ struct samsung_i2s_priv {
 	u32 suspend_i2spsr;
 
 	const struct samsung_i2s_variant_regs *variant_regs;
+	u32 quirks;
 
 	/* The clock provider's data */
 	struct clk *clk_table[3];
 	struct clk_onecell_data clk_data;
 };
 
-struct i2s_dai *samsung_i2s_get_pri_dai(struct device *dev)
-{
-	struct samsung_i2s_priv *priv = dev_get_drvdata(dev);
-
-	return &priv->dai[SAMSUNG_I2S_ID_PRIMARY - 1];
-}
-
 /* Returns true if this is the 'overlay' stereo DAI */
 static inline bool is_secondary(struct i2s_dai *i2s)
 {
@@ -343,7 +336,7 @@ static inline void set_bfs(struct i2s_dai *i2s, unsigned bfs)
 {
 	struct samsung_i2s_priv *priv = i2s->priv;
 	u32 mod = readl(priv->addr + I2SMOD);
-	int tdm = i2s->quirks & QUIRK_SUPPORTS_TDM;
+	int tdm = priv->quirks & QUIRK_SUPPORTS_TDM;
 	int bfs_shift = priv->variant_regs->bfs_off;
 
 	/* Non-TDM I2S controllers do not support BCLK > 48 * FS */
@@ -563,7 +556,7 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id, unsigned int rfs,
 	case SAMSUNG_I2S_RCLKSRC_1: /* clock corrsponding to IISMOD[10] := 1 */
 		mask = 1 << i2s_regs->rclksrc_off;
 
-		if ((i2s->quirks & QUIRK_NO_MUXPSR)
+		if ((priv->quirks & QUIRK_NO_MUXPSR)
 				|| (clk_id == SAMSUNG_I2S_RCLKSRC_0))
 			clk_id = 0;
 		else
@@ -832,6 +825,7 @@ static int i2s_hw_params(struct snd_pcm_substream *substream,
 static int i2s_startup(struct snd_pcm_substream *substream,
 	  struct snd_soc_dai *dai)
 {
+	struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);
 	struct i2s_dai *i2s = to_info(dai);
 	struct i2s_dai *other = get_other_dai(i2s);
 	unsigned long flags;
@@ -847,7 +841,7 @@ static int i2s_startup(struct snd_pcm_substream *substream,
 	else
 		i2s->mode |= DAI_MANAGER;
 
-	if (!any_active(i2s) && (i2s->quirks & QUIRK_NEED_RSTCLR))
+	if (!any_active(i2s) && (priv->quirks & QUIRK_NEED_RSTCLR))
 		writel(CON_RSTCLR, i2s->priv->addr + I2SCON);
 
 	spin_unlock_irqrestore(&lock, flags);
@@ -929,7 +923,7 @@ static int config_setup(struct i2s_dai *i2s)
 	if (is_slave(i2s))
 		return 0;
 
-	if (!(i2s->quirks & QUIRK_NO_MUXPSR)) {
+	if (!(priv->quirks & QUIRK_NO_MUXPSR)) {
 		psr = priv->rclk_srcrate / i2s->frmclk / rfs;
 		writel(((psr - 1) << 8) | PSR_PSREN, priv->addr + I2SPSR);
 		dev_dbg(&i2s->pdev->dev,
@@ -1068,10 +1062,10 @@ static int samsung_i2s_dai_probe(struct snd_soc_dai *dai)
 		snd_soc_dai_init_dma_data(dai, &i2s->dma_playback,
 					   &i2s->dma_capture);
 
-		if (i2s->quirks & QUIRK_NEED_RSTCLR)
+		if (priv->quirks & QUIRK_NEED_RSTCLR)
 			writel(CON_RSTCLR, priv->addr + I2SCON);
 
-		if (i2s->quirks & QUIRK_SUPPORTS_IDMA)
+		if (priv->quirks & QUIRK_SUPPORTS_IDMA)
 			idma_reg_addr_init(priv->addr,
 					i2s->sec_dai->idma_playback.addr);
 	}
@@ -1106,7 +1100,7 @@ static int samsung_i2s_dai_remove(struct snd_soc_dai *dai)
 	pm_runtime_get_sync(dai->dev);
 
 	if (!is_secondary(i2s)) {
-		if (i2s->quirks & QUIRK_NEED_RSTCLR) {
+		if (priv->quirks & QUIRK_NEED_RSTCLR) {
 			spin_lock_irqsave(&priv->lock, flags);
 			writel(0, priv->addr + I2SCON);
 			spin_unlock_irqrestore(&priv->lock, flags);
@@ -1280,7 +1274,6 @@ static int i2s_register_clock_provider(struct samsung_i2s_priv *priv)
 	const char *clk_name[2] = { "i2s_opclk0", "i2s_opclk1" };
 	const char *p_names[2] = { NULL };
 	struct device *dev = &priv->pdev->dev;
-	struct i2s_dai *i2s = samsung_i2s_get_pri_dai(dev);
 	const struct samsung_i2s_variant_regs *reg_info = priv->variant_regs;
 	const char *i2s_clk_name[ARRAY_SIZE(i2s_clk_desc)];
 	struct clk *rclksrc;
@@ -1306,7 +1299,7 @@ static int i2s_register_clock_provider(struct samsung_i2s_priv *priv)
 			return -ENOMEM;
 	}
 
-	if (!(i2s->quirks & QUIRK_NO_MUXPSR)) {
+	if (!(priv->quirks & QUIRK_NO_MUXPSR)) {
 		/* Activate the prescaler */
 		u32 val = readl(priv->addr + I2SPSR);
 		writel(val | PSR_PSREN, priv->addr + I2SPSR);
@@ -1400,11 +1393,11 @@ static int samsung_i2s_probe(struct platform_device *pdev)
 	if (!priv)
 		return -ENOMEM;
 
-	priv->variant_regs = i2s_dai_data->i2s_variant_regs;
-
 	quirks = np ? i2s_dai_data->quirks : i2s_pdata->type.quirks;
 	num_dais = (quirks & QUIRK_SEC_DAI) ? 2 : 1;
 	priv->pdev = pdev;
+	priv->variant_regs = i2s_dai_data->i2s_variant_regs;
+	priv->quirks = quirks;
 
 	ret = i2s_alloc_dais(priv, i2s_dai_data, num_dais);
 	if (ret < 0)
@@ -1459,7 +1452,6 @@ static int samsung_i2s_probe(struct platform_device *pdev)
 	pri_dai->dma_capture.chan_name = "rx";
 	pri_dai->dma_playback.addr_width = 4;
 	pri_dai->dma_capture.addr_width = 4;
-	pri_dai->quirks = quirks;
 	pri_dai->priv = priv;
 
 	if (quirks & QUIRK_PRI_6CHAN)
@@ -1482,7 +1474,6 @@ static int samsung_i2s_probe(struct platform_device *pdev)
 		}
 
 		sec_dai->dma_playback.addr_width = 4;
-		sec_dai->quirks = quirks;
 		sec_dai->idma_playback.addr = idma_addr;
 		sec_dai->pri_dai = pri_dai;
 		sec_dai->priv = priv;
-- 
2.17.1

[PATCH v3 Resend 05/13] ASoC: samsung: i2s: Get rid of a static spinlock

[Sylwester Nawrocki]

This patch makes the spinlock serializing access to the primary/secondary
PCM a per I2S controller lock, rather than a global one. There is no need
to have a global lock across multiple I2S controllers in the SoC.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 sound/soc/samsung/i2s.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 8f0af4b0f25a..692a752b194c 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -88,9 +88,6 @@ struct i2s_dai {
 	struct samsung_i2s_priv *priv;
 };
 
-/* Lock for cross i/f checks */
-static DEFINE_SPINLOCK(lock);
-
 struct samsung_i2s_priv {
 	struct platform_device *pdev;
 	struct platform_device *pdev_sec;
@@ -101,6 +98,9 @@ struct samsung_i2s_priv {
 	/* Spinlock protecting access to the device's registers */
 	spinlock_t lock;
 
+	/* Lock for cross i/f checks */
+	spinlock_t pcm_lock;
+
 	/* CPU DAIs and their corresponding drivers */
 	struct i2s_dai *dai;
 	struct snd_soc_dai_driver *dai_drv;
@@ -832,7 +832,7 @@ static int i2s_startup(struct snd_pcm_substream *substream,
 
 	pm_runtime_get_sync(dai->dev);
 
-	spin_lock_irqsave(&lock, flags);
+	spin_lock_irqsave(&priv->pcm_lock, flags);
 
 	i2s->mode |= DAI_OPENED;
 
@@ -844,7 +844,7 @@ static int i2s_startup(struct snd_pcm_substream *substream,
 	if (!any_active(i2s) && (priv->quirks & QUIRK_NEED_RSTCLR))
 		writel(CON_RSTCLR, i2s->priv->addr + I2SCON);
 
-	spin_unlock_irqrestore(&lock, flags);
+	spin_unlock_irqrestore(&priv->pcm_lock, flags);
 
 	return 0;
 }
@@ -852,11 +852,12 @@ static int i2s_startup(struct snd_pcm_substream *substream,
 static void i2s_shutdown(struct snd_pcm_substream *substream,
 	struct snd_soc_dai *dai)
 {
+	struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);
 	struct i2s_dai *i2s = to_info(dai);
 	struct i2s_dai *other = get_other_dai(i2s);
 	unsigned long flags;
 
-	spin_lock_irqsave(&lock, flags);
+	spin_lock_irqsave(&priv->pcm_lock, flags);
 
 	i2s->mode &= ~DAI_OPENED;
 	i2s->mode &= ~DAI_MANAGER;
@@ -868,7 +869,7 @@ static void i2s_shutdown(struct snd_pcm_substream *substream,
 	i2s->rfs = 0;
 	i2s->bfs = 0;
 
-	spin_unlock_irqrestore(&lock, flags);
+	spin_unlock_irqrestore(&priv->pcm_lock, flags);
 
 	pm_runtime_put(dai->dev);
 }
@@ -1406,6 +1407,7 @@ static int samsung_i2s_probe(struct platform_device *pdev)
 	pri_dai = &priv->dai[SAMSUNG_I2S_ID_PRIMARY - 1];
 
 	spin_lock_init(&priv->lock);
+	spin_lock_init(&priv->pcm_lock);
 
 	if (!np) {
 		if (i2s_pdata == NULL) {
-- 
2.17.1

[PATCH v3 Resend 06/13] ASoC: samsung: odroid: Add support for secondary CPU DAI

[Sylwester Nawrocki]

This patch adds DPCM links in order to support the secondary I2S interface.
For the secondary PCM interface to be actually available one more entry
should be added to the sound-dai property in sound/cpu node in DT.
The changes in driver are done in a way so we are backwards compatible
with existing DTS/DTB, i.e. if the cpu sound-dai property contains only
one entry only one PCM will be registered.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 sound/soc/samsung/odroid.c | 131 +++++++++++++++++++++++++++----------
 1 file changed, 95 insertions(+), 36 deletions(-)

diff --git a/sound/soc/samsung/odroid.c b/sound/soc/samsung/odroid.c
index e7b371b07230..18bb3bfe0300 100644
--- a/sound/soc/samsung/odroid.c
+++ b/sound/soc/samsung/odroid.c
@@ -7,6 +7,7 @@
  */
 
 #include <linux/clk.h>
+#include <linux/clk-provider.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/module.h>
@@ -17,21 +18,24 @@
 
 struct odroid_priv {
 	struct snd_soc_card card;
-	struct snd_soc_dai_link dai_link;
-
 	struct clk *clk_i2s_bus;
 	struct clk *sclk_i2s;
 };
 
-static int odroid_card_startup(struct snd_pcm_substream *substream)
+static int odroid_card_fe_startup(struct snd_pcm_substream *substream)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
 
 	snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2);
+
 	return 0;
 }
 
-static int odroid_card_hw_params(struct snd_pcm_substream *substream,
+static const struct snd_soc_ops odroid_card_fe_ops = {
+	.startup = odroid_card_fe_startup,
+};
+
+static int odroid_card_be_hw_params(struct snd_pcm_substream *substream,
 				      struct snd_pcm_hw_params *params)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
@@ -86,19 +90,55 @@ static int odroid_card_hw_params(struct snd_pcm_substream *substream,
 	return 0;
 }
 
-static const struct snd_soc_ops odroid_card_ops = {
-	.startup = odroid_card_startup,
-	.hw_params = odroid_card_hw_params,
+static const struct snd_soc_ops odroid_card_be_ops = {
+	.hw_params = odroid_card_be_hw_params,
+};
+
+static struct snd_soc_dai_link odroid_card_dais[] = {
+	{
+		/* Primary FE <-> BE link */
+		.codec_name = "snd-soc-dummy",
+		.codec_dai_name = "snd-soc-dummy-dai",
+		.ops = &odroid_card_fe_ops,
+		.name = "Primary",
+		.stream_name = "Primary",
+		.platform_name = "3830000.i2s",
+		.dynamic = 1,
+		.dpcm_playback = 1,
+	}, {
+		/* BE <-> CODECs link */
+		.name = "I2S Mixer",
+		.cpu_name = "snd-soc-dummy",
+		.cpu_dai_name = "snd-soc-dummy-dai",
+		.platform_name = "snd-soc-dummy",
+		.ops = &odroid_card_be_ops,
+		.no_pcm = 1,
+		.dpcm_playback = 1,
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+				SND_SOC_DAIFMT_CBS_CFS,
+	}, {
+		/* Secondary FE <-> BE link */
+		.playback_only = 1,
+		.codec_name = "snd-soc-dummy",
+		.codec_dai_name = "snd-soc-dummy-dai",
+		.ops = &odroid_card_fe_ops,
+		.name = "Secondary",
+		.stream_name = "Secondary",
+		.platform_name = "samsung-i2s-sec",
+		.dynamic = 1,
+		.dpcm_playback = 1,
+	}
 };
 
 static int odroid_audio_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct device_node *cpu, *codec;
+	struct device_node *cpu, *cpu_dai, *codec;
 	struct odroid_priv *priv;
-	struct snd_soc_dai_link *link;
 	struct snd_soc_card *card;
-	int ret;
+	struct snd_soc_dai_link *link, *codec_link;
+	int num_pcms, ret, i;
+	struct of_phandle_args args = {};
 
 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
@@ -130,45 +170,67 @@ static int odroid_audio_probe(struct platform_device *pdev)
 			return ret;
 	}
 
-	link = &priv->dai_link;
-
-	link->ops = &odroid_card_ops;
-	link->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
-			SND_SOC_DAIFMT_CBS_CFS;
-
-	card->dai_link = &priv->dai_link;
-	card->num_links = 1;
+	card->dai_link = odroid_card_dais;
+	card->num_links = ARRAY_SIZE(odroid_card_dais);
 
 	cpu = of_get_child_by_name(dev->of_node, "cpu");
 	codec = of_get_child_by_name(dev->of_node, "codec");
+	link = card->dai_link;
+	codec_link = &card->dai_link[1];
 
-	link->cpu_of_node = of_parse_phandle(cpu, "sound-dai", 0);
-	if (!link->cpu_of_node) {
-		dev_err(dev, "Failed parsing cpu/sound-dai property\n");
-		return -EINVAL;
+	/*
+	 * For backwards compatibility create the secondary CPU DAI link only
+	 * if there are 2 CPU DAI entries in the cpu sound-dai property in DT.
+	 */
+	num_pcms = of_count_phandle_with_args(cpu, "sound-dai",
+					      "#sound-dai-cells");
+	if (num_pcms == 1)
+		card->num_links--;
+
+	for (i = 0; i < num_pcms; i++, link += 2) {
+		ret = of_parse_phandle_with_args(cpu, "sound-dai",
+						 "#sound-dai-cells", i, &args);
+		if (ret < 0)
+			return ret;
+
+		if (!args.np) {
+			dev_err(dev, "sound-dai property parse error: %d\n", ret);
+			return -EINVAL;
+		}
+
+		ret = snd_soc_get_dai_name(&args, &link->cpu_dai_name);
+		of_node_put(args.np);
+
+		if (ret < 0)
+			return ret;
 	}
 
-	ret = snd_soc_of_get_dai_link_codecs(dev, codec, link);
+	cpu_dai = of_parse_phandle(cpu, "sound-dai", 0);
+	of_node_put(cpu);
+	of_node_put(codec);
+
+	ret = snd_soc_of_get_dai_link_codecs(dev, codec, codec_link);
 	if (ret < 0)
 		goto err_put_codec_n;
 
-	link->platform_of_node = link->cpu_of_node;
-
-	link->name = "Primary";
-	link->stream_name = link->name;
-
+	/* Set capture capability only for boards with the MAX98090 CODEC */
+	if (codec_link->num_codecs > 1) {
+		card->dai_link[0].dpcm_capture = 1;
+		card->dai_link[1].dpcm_capture = 1;
+	}
 
-	priv->sclk_i2s = of_clk_get_by_name(link->cpu_of_node, "i2s_opclk1");
+	priv->sclk_i2s = of_clk_get_by_name(cpu_dai, "i2s_opclk1");
 	if (IS_ERR(priv->sclk_i2s)) {
 		ret = PTR_ERR(priv->sclk_i2s);
-		goto err_put_i2s_n;
+		goto err_put_codec_n;
 	}
 
-	priv->clk_i2s_bus = of_clk_get_by_name(link->cpu_of_node, "iis");
+	priv->clk_i2s_bus = of_clk_get_by_name(cpu_dai, "iis");
 	if (IS_ERR(priv->clk_i2s_bus)) {
 		ret = PTR_ERR(priv->clk_i2s_bus);
 		goto err_put_sclk;
 	}
+	of_node_put(cpu_dai);
 
 	ret = devm_snd_soc_register_card(dev, card);
 	if (ret < 0) {
@@ -182,10 +244,8 @@ static int odroid_audio_probe(struct platform_device *pdev)
 	clk_put(priv->clk_i2s_bus);
 err_put_sclk:
 	clk_put(priv->sclk_i2s);
-err_put_i2s_n:
-	of_node_put(link->cpu_of_node);
 err_put_codec_n:
-	snd_soc_of_put_dai_link_codecs(link);
+	snd_soc_of_put_dai_link_codecs(codec_link);
 	return ret;
 }
 
@@ -193,8 +253,7 @@ static int odroid_audio_remove(struct platform_device *pdev)
 {
 	struct odroid_priv *priv = platform_get_drvdata(pdev);
 
-	of_node_put(priv->dai_link.cpu_of_node);
-	snd_soc_of_put_dai_link_codecs(&priv->dai_link);
+	snd_soc_of_put_dai_link_codecs(&priv->card.dai_link[1]);
 	clk_put(priv->sclk_i2s);
 	clk_put(priv->clk_i2s_bus);
 
-- 
2.17.1

[PATCH v3 Resend 07/13] ASoC: samsung: Specify DMA channel names through custom DMA config

[Sylwester Nawrocki]

This is a part of conversion of Samsung platforms to use the custom DMA
config for specifying DMA channel names, in addition to passing custom
DMA device for the secondary CPU DAI's "PCM" component for some variants
of the I2S controller.

We also don't set the SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME any more
as setting it wouldn't allow to specify DMA channels through the custom
DMA config.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 sound/soc/samsung/dmaengine.c   | 12 ++++--------
 sound/soc/samsung/i2s.c         |  2 +-
 sound/soc/samsung/s3c2412-i2s.c |  2 +-
 sound/soc/samsung/s3c24xx-i2s.c |  2 +-
 4 files changed, 7 insertions(+), 11 deletions(-)

diff --git a/sound/soc/samsung/dmaengine.c b/sound/soc/samsung/dmaengine.c
index 84601fa9aa46..302871974cb3 100644
--- a/sound/soc/samsung/dmaengine.c
+++ b/sound/soc/samsung/dmaengine.c
@@ -28,7 +28,6 @@ int samsung_asoc_dma_platform_register(struct device *dev, dma_filter_fn filter,
 				       const char *tx, const char *rx,
 				       struct device *dma_dev)
 {
-	unsigned int flags = SND_DMAENGINE_PCM_FLAG_COMPAT;
 	struct snd_dmaengine_pcm_config *pcm_conf;
 
 	pcm_conf = devm_kzalloc(dev, sizeof(*pcm_conf), GFP_KERNEL);
@@ -39,14 +38,11 @@ int samsung_asoc_dma_platform_register(struct device *dev, dma_filter_fn filter,
 	pcm_conf->compat_filter_fn = filter;
 	pcm_conf->dma_dev = dma_dev;
 
-	if (dev->of_node) {
-		pcm_conf->chan_names[SNDRV_PCM_STREAM_PLAYBACK] = tx;
-		pcm_conf->chan_names[SNDRV_PCM_STREAM_CAPTURE] = rx;
-	} else {
-		flags |= SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME;
-	}
+	pcm_conf->chan_names[SNDRV_PCM_STREAM_PLAYBACK] = tx;
+	pcm_conf->chan_names[SNDRV_PCM_STREAM_CAPTURE] = rx;
 
-	return devm_snd_dmaengine_pcm_register(dev, pcm_conf, flags);
+	return devm_snd_dmaengine_pcm_register(dev, pcm_conf,
+				SND_DMAENGINE_PCM_FLAG_COMPAT);
 }
 EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_register);
 
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 692a752b194c..6ab99e38e6dd 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -1460,7 +1460,7 @@ static int samsung_i2s_probe(struct platform_device *pdev)
 		pri_dai->drv->playback.channels_max = 6;
 
 	ret = samsung_asoc_dma_platform_register(&pdev->dev, pri_dai->filter,
-						 NULL, NULL, NULL);
+						 "tx", "rx", NULL);
 	if (ret < 0)
 		goto err_disable_clk;
 
diff --git a/sound/soc/samsung/s3c2412-i2s.c b/sound/soc/samsung/s3c2412-i2s.c
index 67dfa27ae321..c08638b0e458 100644
--- a/sound/soc/samsung/s3c2412-i2s.c
+++ b/sound/soc/samsung/s3c2412-i2s.c
@@ -177,7 +177,7 @@ static int s3c2412_iis_dev_probe(struct platform_device *pdev)
 
 	ret = samsung_asoc_dma_platform_register(&pdev->dev,
 						 pdata->dma_filter,
-						 NULL, NULL, NULL);
+						 "tx", "rx", NULL);
 	if (ret) {
 		pr_err("failed to register the DMA: %d\n", ret);
 		return ret;
diff --git a/sound/soc/samsung/s3c24xx-i2s.c b/sound/soc/samsung/s3c24xx-i2s.c
index ba0f2b94f8d4..a8026b640c95 100644
--- a/sound/soc/samsung/s3c24xx-i2s.c
+++ b/sound/soc/samsung/s3c24xx-i2s.c
@@ -446,7 +446,7 @@ static int s3c24xx_iis_dev_probe(struct platform_device *pdev)
 	s3c24xx_i2s_pcm_stereo_in.addr = res->start + S3C2410_IISFIFO;
 
 	ret = samsung_asoc_dma_platform_register(&pdev->dev, NULL,
-						 NULL, NULL, NULL);
+						 "tx", "rx", NULL);
 	if (ret) {
 		dev_err(&pdev->dev, "Failed to register the DMA: %d\n", ret);
 		return ret;
-- 
2.17.1

[PATCH v3 Resend 08/13] ASoC: samsung: Drop DAI DMA data chan_name assignments

[Sylwester Nawrocki]

There is now no need to pass DMA channel names through the DAI DMA data,
custom DMA config of the PCM is now used for this purpose.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 sound/soc/samsung/i2s.c         | 4 ----
 sound/soc/samsung/s3c2412-i2s.c | 2 --
 sound/soc/samsung/s3c24xx-i2s.c | 2 --
 3 files changed, 8 deletions(-)

diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 6ab99e38e6dd..16e6868376f6 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -1450,8 +1450,6 @@ static int samsung_i2s_probe(struct platform_device *pdev)
 	}
 	pri_dai->dma_playback.addr = regs_base + I2STXD;
 	pri_dai->dma_capture.addr = regs_base + I2SRXD;
-	pri_dai->dma_playback.chan_name = "tx";
-	pri_dai->dma_capture.chan_name = "rx";
 	pri_dai->dma_playback.addr_width = 4;
 	pri_dai->dma_capture.addr_width = 4;
 	pri_dai->priv = priv;
@@ -1466,9 +1464,7 @@ static int samsung_i2s_probe(struct platform_device *pdev)
 
 	if (quirks & QUIRK_SEC_DAI) {
 		sec_dai = &priv->dai[SAMSUNG_I2S_ID_SECONDARY - 1];
-
 		sec_dai->dma_playback.addr = regs_base + I2STXDS;
-		sec_dai->dma_playback.chan_name = "tx-sec";
 
 		if (!np) {
 			sec_dai->dma_playback.filter_data = i2s_pdata->dma_play_sec;
diff --git a/sound/soc/samsung/s3c2412-i2s.c b/sound/soc/samsung/s3c2412-i2s.c
index c08638b0e458..a00e35147e50 100644
--- a/sound/soc/samsung/s3c2412-i2s.c
+++ b/sound/soc/samsung/s3c2412-i2s.c
@@ -35,12 +35,10 @@
 #include <linux/platform_data/asoc-s3c.h>
 
 static struct snd_dmaengine_dai_dma_data s3c2412_i2s_pcm_stereo_out = {
-	.chan_name	= "tx",
 	.addr_width	= 4,
 };
 
 static struct snd_dmaengine_dai_dma_data s3c2412_i2s_pcm_stereo_in = {
-	.chan_name	= "rx",
 	.addr_width	= 4,
 };
 
diff --git a/sound/soc/samsung/s3c24xx-i2s.c b/sound/soc/samsung/s3c24xx-i2s.c
index a8026b640c95..600b3b4cdb5b 100644
--- a/sound/soc/samsung/s3c24xx-i2s.c
+++ b/sound/soc/samsung/s3c24xx-i2s.c
@@ -31,12 +31,10 @@
 #include "s3c24xx-i2s.h"
 
 static struct snd_dmaengine_dai_dma_data s3c24xx_i2s_pcm_stereo_out = {
-	.chan_name	= "tx",
 	.addr_width	= 2,
 };
 
 static struct snd_dmaengine_dai_dma_data s3c24xx_i2s_pcm_stereo_in = {
-	.chan_name	= "rx",
 	.addr_width	= 2,
 };
 
-- 
2.17.1

[PATCH v3 Resend 09/13] ASoC: dmaengine: Remove unused SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME flag

[Sylwester Nawrocki]

There is now no users of this flag so remove it together with related
data structure field.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 include/sound/dmaengine_pcm.h         |  6 ------
 sound/soc/soc-generic-dmaengine-pcm.c | 21 ++++-----------------
 2 files changed, 4 insertions(+), 23 deletions(-)

diff --git a/include/sound/dmaengine_pcm.h b/include/sound/dmaengine_pcm.h
index 2c4cfaa135a6..764c787928a4 100644
--- a/include/sound/dmaengine_pcm.h
+++ b/include/sound/dmaengine_pcm.h
@@ -63,7 +63,6 @@ struct dma_chan *snd_dmaengine_pcm_get_chan(struct snd_pcm_substream *substream)
  * @slave_id: Slave requester id for the DMA channel.
  * @filter_data: Custom DMA channel filter data, this will usually be used when
  * requesting the DMA channel.
- * @chan_name: Custom channel name to use when requesting DMA channel.
  * @fifo_size: FIFO size of the DAI controller in bytes
  * @flags: PCM_DAI flags, only SND_DMAENGINE_PCM_DAI_FLAG_PACK for now
  */
@@ -73,7 +72,6 @@ struct snd_dmaengine_dai_dma_data {
 	u32 maxburst;
 	unsigned int slave_id;
 	void *filter_data;
-	const char *chan_name;
 	unsigned int fifo_size;
 	unsigned int flags;
 };
@@ -99,10 +97,6 @@ void snd_dmaengine_pcm_set_config_from_dai_data(
  * playback.
  */
 #define SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX BIT(3)
-/*
- * The PCM streams have custom channel names specified.
- */
-#define SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME BIT(4)
 
 /**
  * struct snd_dmaengine_pcm_config - Configuration data for dmaengine based PCM
diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c
index 1b44e363c50c..f1ab6285a085 100644
--- a/sound/soc/soc-generic-dmaengine-pcm.c
+++ b/sound/soc/soc-generic-dmaengine-pcm.c
@@ -265,7 +265,6 @@ static int dmaengine_pcm_new(struct snd_soc_pcm_runtime *rtd)
 	struct dmaengine_pcm *pcm = soc_component_to_pcm(component);
 	const struct snd_dmaengine_pcm_config *config = pcm->config;
 	struct device *dev = component->dev;
-	struct snd_dmaengine_dai_dma_data *dma_data;
 	struct snd_pcm_substream *substream;
 	size_t prealloc_buffer_size;
 	size_t max_buffer_size;
@@ -285,19 +284,9 @@ static int dmaengine_pcm_new(struct snd_soc_pcm_runtime *rtd)
 		if (!substream)
 			continue;
 
-		dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
-
-		if (!pcm->chan[i] &&
-		    ((pcm->flags & SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME) ||
-		     (config && config->chan_names[i]))) {
-			const char *chan_name = dma_data->chan_name;
-
-			if (config && config->chan_names[i])
-				chan_name = config->chan_names[i];
-
+		if (!pcm->chan[i] && config && config->chan_names[i])
 			pcm->chan[i] = dma_request_slave_channel(dev,
-				chan_name);
-		}
+				config->chan_names[i]);
 
 		if (!pcm->chan[i] && (pcm->flags & SND_DMAENGINE_PCM_FLAG_COMPAT)) {
 			pcm->chan[i] = dmaengine_pcm_compat_request_channel(rtd,
@@ -420,10 +409,8 @@ static int dmaengine_pcm_request_chan_of(struct dmaengine_pcm *pcm,
 	const char *name;
 	struct dma_chan *chan;
 
-	if ((pcm->flags & (SND_DMAENGINE_PCM_FLAG_NO_DT |
-			   SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME)) ||
-	     (!dev->of_node && !(config && config->dma_dev &&
-				config->dma_dev->of_node)))
+	if ((pcm->flags & SND_DMAENGINE_PCM_FLAG_NO_DT) || (!dev->of_node &&
+	    !(config && config->dma_dev && config->dma_dev->of_node)))
 		return 0;
 
 	if (config && config->dma_dev) {
-- 
2.17.1

[PATCH v3 Resend 10/13] ASoC: samsung: i2s: Simplify pri_dai, sec_dai pointers usage

[Sylwester Nawrocki]

If the probe call is on the primary DAI we can use 'other' in place of
i2s->sec_dai, if the probe call is on the secondary DAI we can use 'i2s'
in place of other->sec_dai.

While at it fix one whitespace issue.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 sound/soc/samsung/i2s.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 16e6868376f6..4f15b6af8268 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -1057,18 +1057,17 @@ static int samsung_i2s_dai_probe(struct snd_soc_dai *dai)
 	pm_runtime_get_sync(dai->dev);
 
 	if (is_secondary(i2s)) { /* If this is probe on the secondary DAI */
-		snd_soc_dai_init_dma_data(dai, &other->sec_dai->dma_playback,
-					   NULL);
+		snd_soc_dai_init_dma_data(dai, &i2s->dma_playback, NULL);
 	} else {
 		snd_soc_dai_init_dma_data(dai, &i2s->dma_playback,
-					   &i2s->dma_capture);
+					  &i2s->dma_capture);
 
 		if (priv->quirks & QUIRK_NEED_RSTCLR)
 			writel(CON_RSTCLR, priv->addr + I2SCON);
 
 		if (priv->quirks & QUIRK_SUPPORTS_IDMA)
 			idma_reg_addr_init(priv->addr,
-					i2s->sec_dai->idma_playback.addr);
+					   other->idma_playback.addr);
 	}
 
 	/* Reset any constraint on RFS and BFS */
-- 
2.17.1

[PATCH v3 Resend 11/13] ASoC: samsung: i2s: Change indentation in SAMSUNG_I2S_FMTS definition

[Sylwester Nawrocki]

Change indentation so this macro definition spans 2 rows and looks
more consistent with surrounding code.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 sound/soc/samsung/i2s.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 4f15b6af8268..e0c151843f9e 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -1150,9 +1150,8 @@ static const struct snd_soc_component_driver samsung_i2s_component = {
 	.num_dapm_routes = ARRAY_SIZE(samsung_i2s_dapm_routes),
 };
 
-#define SAMSUNG_I2S_FMTS	(SNDRV_PCM_FMTBIT_S8 | \
-					SNDRV_PCM_FMTBIT_S16_LE | \
-					SNDRV_PCM_FMTBIT_S24_LE)
+#define SAMSUNG_I2S_FMTS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | \
+			  SNDRV_PCM_FMTBIT_S24_LE)
 
 static int i2s_alloc_dais(struct samsung_i2s_priv *priv,
 			  const struct samsung_i2s_dai_data *i2s_dai_data,
-- 
2.17.1

[PATCH v3 Resend 12/13] ASoC: samsung: i2s: Comments clean up

[Sylwester Nawrocki]

Spelling error fixes, upper/lower case letter changes.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 sound/soc/samsung/i2s.c | 29 +++++++++++++++--------------
 1 file changed, 15 insertions(+), 14 deletions(-)

diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index e0c151843f9e..4f13b514d9ce 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -1,5 +1,4 @@
-/* sound/soc/samsung/i2s.c
- *
+/*
  * ALSA SoC Audio Layer - Samsung I2S Controller driver
  *
  * Copyright (c) 2010 Samsung Electronics Co. Ltd.
@@ -61,10 +60,10 @@ struct i2s_dai {
 	/* Platform device for this DAI */
 	struct platform_device *pdev;
 
-	/* Frame Clock */
+	/* Frame clock */
 	unsigned frmclk;
 	/*
-	 * Specifically requested RCLK,BCLK by MACHINE Driver.
+	 * Specifically requested RCLK, BCLK by machine driver.
 	 * 0 indicates CPU driver is free to choose any value.
 	 */
 	unsigned rfs, bfs;
@@ -72,8 +71,9 @@ struct i2s_dai {
 	struct i2s_dai *pri_dai;
 	/* Pointer to the Secondary_Fifo if it has one, NULL otherwise */
 	struct i2s_dai *sec_dai;
-#define DAI_OPENED	(1 << 0) /* Dai is opened */
-#define DAI_MANAGER	(1 << 1) /* Dai is the manager */
+
+#define DAI_OPENED	(1 << 0) /* DAI is opened */
+#define DAI_MANAGER	(1 << 1) /* DAI is the manager */
 	unsigned mode;
 
 	/* Driver for this DAI */
@@ -98,7 +98,7 @@ struct samsung_i2s_priv {
 	/* Spinlock protecting access to the device's registers */
 	spinlock_t lock;
 
-	/* Lock for cross i/f checks */
+	/* Lock for cross interface checks */
 	spinlock_t pcm_lock;
 
 	/* CPU DAIs and their corresponding drivers */
@@ -309,7 +309,7 @@ static inline void set_rfs(struct i2s_dai *i2s, unsigned rfs)
 	writel(mod, priv->addr + I2SMOD);
 }
 
-/* Read Bit-Clock of I2S (in multiples of LRCLK) */
+/* Read bit-clock of I2S (in multiples of LRCLK) */
 static inline unsigned get_bfs(struct i2s_dai *i2s)
 {
 	struct samsung_i2s_priv *priv = i2s->priv;
@@ -331,7 +331,7 @@ static inline unsigned get_bfs(struct i2s_dai *i2s)
 	}
 }
 
-/* Write Bit-Clock of I2S (in multiples of LRCLK) */
+/* Write bit-clock of I2S (in multiples of LRCLK) */
 static inline void set_bfs(struct i2s_dai *i2s, unsigned bfs)
 {
 	struct samsung_i2s_priv *priv = i2s->priv;
@@ -383,7 +383,7 @@ static inline void set_bfs(struct i2s_dai *i2s, unsigned bfs)
 	writel(mod, priv->addr + I2SMOD);
 }
 
-/* Sample-Size */
+/* Sample size */
 static inline int get_blc(struct i2s_dai *i2s)
 {
 	int blc = readl(i2s->priv->addr + I2SMOD);
@@ -397,7 +397,7 @@ static inline int get_blc(struct i2s_dai *i2s)
 	}
 }
 
-/* TX Channel Control */
+/* TX channel control */
 static void i2s_txctrl(struct i2s_dai *i2s, int on)
 {
 	struct samsung_i2s_priv *priv = i2s->priv;
@@ -742,7 +742,7 @@ static int i2s_hw_params(struct snd_pcm_substream *substream,
 	switch (params_channels(params)) {
 	case 6:
 		val |= MOD_DC2_EN;
-		/* fall through */
+		/* Fall through */
 	case 4:
 		val |= MOD_DC1_EN;
 		break;
@@ -821,7 +821,7 @@ static int i2s_hw_params(struct snd_pcm_substream *substream,
 	return 0;
 }
 
-/* We set constraints on the substream acc to the version of I2S */
+/* 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)
 {
@@ -1056,7 +1056,8 @@ static int samsung_i2s_dai_probe(struct snd_soc_dai *dai)
 
 	pm_runtime_get_sync(dai->dev);
 
-	if (is_secondary(i2s)) { /* If this is probe on the secondary DAI */
+	if (is_secondary(i2s)) {
+		/* If this is probe on the secondary DAI */
 		snd_soc_dai_init_dma_data(dai, &i2s->dma_playback, NULL);
 	} else {
 		snd_soc_dai_init_dma_data(dai, &i2s->dma_playback,
-- 
2.17.1

[PATCH v3 Resend 13/13] ASoC: samsung: i2s: Convert to SPDX License Indentifier

[Sylwester Nawrocki]

Replace GPL v2.0 license statements with SPDX license identifier.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 sound/soc/samsung/i2s.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 4f13b514d9ce..304b3138b3ff 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -1,13 +1,9 @@
-/*
- * ALSA SoC Audio Layer - Samsung I2S Controller driver
- *
- * Copyright (c) 2010 Samsung Electronics Co. Ltd.
- *	Jaswinder Singh <jassisinghbrar@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
+// SPDX-License-Identifier: GPL-2.0
+//
+// ALSA SoC Audio Layer - Samsung I2S Controller driver
+//
+// Copyright (c) 2010 Samsung Electronics Co. Ltd.
+//	Jaswinder Singh <jassisinghbrar@gmail.com>
 
 #include <dt-bindings/sound/samsung-i2s.h>
 #include <linux/delay.h>
-- 
2.17.1

Re: [PATCH v3 Resend 09/13] ASoC: dmaengine: Remove unused SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME flag

[Mark Brown]

[-- Attachment #1: Type: text/plain, Size: 644 bytes --]

On Thu, Feb 14, 2019 at 10:37:43AM +0100, Sylwester Nawrocki wrote:

>  	u32 maxburst;
>  	unsigned int slave_id;
>  	void *filter_data;
> -	const char *chan_name;
>  	unsigned int fifo_size;
>  	unsigned int flags;

This fails to build:

  CC      sound/core/pcm_dmaengine.o
sound/arm/pxa2xx-pcm-lib.c: In function ‘pxa2xx_pcm_open’:
sound/arm/pxa2xx-pcm-lib.c:128:22: error: ‘struct snd_dmaengine_dai_dma_data’ has no member named ‘chan_name’
            dma_params->chan_name));
                      ^~
sound/arm/pxa2xx-pcm-lib.c:129:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

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Re: [PATCH v3 Resend 09/13] ASoC: dmaengine: Remove unused SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME flag

[Mark Brown]

[-- Attachment #1.1: Type: text/plain, Size: 644 bytes --]

On Thu, Feb 14, 2019 at 10:37:43AM +0100, Sylwester Nawrocki wrote:

>  	u32 maxburst;
>  	unsigned int slave_id;
>  	void *filter_data;
> -	const char *chan_name;
>  	unsigned int fifo_size;
>  	unsigned int flags;

This fails to build:

  CC      sound/core/pcm_dmaengine.o
sound/arm/pxa2xx-pcm-lib.c: In function ‘pxa2xx_pcm_open’:
sound/arm/pxa2xx-pcm-lib.c:128:22: error: ‘struct snd_dmaengine_dai_dma_data’ has no member named ‘chan_name’
            dma_params->chan_name));
                      ^~
sound/arm/pxa2xx-pcm-lib.c:129:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

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Re: [PATCH v3 Resend 09/13] ASoC: dmaengine: Remove unused SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME flag

[Sylwester Nawrocki]

On 2/14/19 14:07, Mark Brown wrote:
> On Thu, Feb 14, 2019 at 10:37:43AM +0100, Sylwester Nawrocki wrote:
> 
>>  	u32 maxburst;
>>  	unsigned int slave_id;
>>  	void *filter_data;
>> -	const char *chan_name;
>>  	unsigned int fifo_size;
>>  	unsigned int flags;
> 
> This fails to build:
> 
>   CC      sound/core/pcm_dmaengine.o
> sound/arm/pxa2xx-pcm-lib.c: In function ‘pxa2xx_pcm_open’:
> sound/arm/pxa2xx-pcm-lib.c:128:22: error: ‘struct snd_dmaengine_dai_dma_data’ has no member named ‘chan_name’
>             dma_params->chan_name));
>                       ^~
> sound/arm/pxa2xx-pcm-lib.c:129:1: warning: control reaches end of non-void function [-Wreturn-type]
>  }
>  ^

Hm, looks like we need still to keep that data structure field, but 
remaining part of the patch could be applied. Do you want me to 
resend it with chan_name removal part dropped?
The $subject patch is optional so we could also skip it and apply remaining
patches so there is no another resend.

Re: [PATCH v3 Resend 09/13] ASoC: dmaengine: Remove unused SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME flag

[Mark Brown]

[-- Attachment #1: Type: text/plain, Size: 279 bytes --]

On Thu, Feb 14, 2019 at 03:32:38PM +0100, Sylwester Nawrocki wrote:

> Hm, looks like we need still to keep that data structure field, but 
> remaining part of the patch could be applied. Do you want me to 
> resend it with chan_name removal part dropped?

Please resend.

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Applied "ASoC: samsung: i2s: Convert to SPDX License Indentifier" to the asoc tree

[Mark Brown]

The patch

   ASoC: samsung: i2s: Convert to SPDX License Indentifier

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

From c1b2db4d038938c64f86b1764da2a5b04f95c171 Mon Sep 17 00:00:00 2001
From: Sylwester Nawrocki <s.nawrocki@samsung.com>
Date: Thu, 14 Feb 2019 10:37:47 +0100
Subject: [PATCH] ASoC: samsung: i2s: Convert to SPDX License Indentifier

Replace GPL v2.0 license statements with SPDX license identifier.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/samsung/i2s.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 84cfa2c0ba68..03fff1c657be 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -1,13 +1,9 @@
-/*
- * ALSA SoC Audio Layer - Samsung I2S Controller driver
- *
- * Copyright (c) 2010 Samsung Electronics Co. Ltd.
- *	Jaswinder Singh <jassisinghbrar@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
+// SPDX-License-Identifier: GPL-2.0
+//
+// ALSA SoC Audio Layer - Samsung I2S Controller driver
+//
+// Copyright (c) 2010 Samsung Electronics Co. Ltd.
+//	Jaswinder Singh <jassisinghbrar@gmail.com>
 
 #include <dt-bindings/sound/samsung-i2s.h>
 #include <linux/delay.h>
-- 
2.20.1

Applied "ASoC: samsung: i2s: Convert to SPDX License Indentifier" to the asoc tree

[Mark Brown]

The patch

   ASoC: samsung: i2s: Convert to SPDX License Indentifier

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From c1b2db4d038938c64f86b1764da2a5b04f95c171 Mon Sep 17 00:00:00 2001
From: Sylwester Nawrocki <s.nawrocki@samsung.com>
Date: Thu, 14 Feb 2019 10:37:47 +0100
Subject: [PATCH] ASoC: samsung: i2s: Convert to SPDX License Indentifier

Replace GPL v2.0 license statements with SPDX license identifier.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 sound/soc/samsung/i2s.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 84cfa2c0ba68..03fff1c657be 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -1,13 +1,9 @@
-/*
- * ALSA SoC Audio Layer - Samsung I2S Controller driver
- *
- * Copyright (c) 2010 Samsung Electronics Co. Ltd.
- *	Jaswinder Singh <jassisinghbrar@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
+// SPDX-License-Identifier: GPL-2.0
+//
+// ALSA SoC Audio Layer - Samsung I2S Controller driver
+//
+// Copyright (c) 2010 Samsung Electronics Co. Ltd.
+//	Jaswinder Singh <jassisinghbrar@gmail.com>
 
 #include <dt-bindings/sound/samsung-i2s.h>
 #include <linux/delay.h>
-- 
2.20.1