Applied "ASoC: samsung: i2s: Move clk supplier data to common driver data structure" to the asoc tree

Applied "ASoC: samsung: i2s: Move clk supplier data to common driver data structure" to the asoc tree

[Mark Brown]

The patch

   ASoC: samsung: i2s: Move clk supplier data to common driver data structure

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 89d2e831487682b567525275f89d679793dd53da Mon Sep 17 00:00:00 2001
From: Sylwester Nawrocki <s.nawrocki@samsung.com>
Date: Tue, 12 Feb 2019 19:03:23 +0100
Subject: [PATCH] ASoC: samsung: i2s: Move clk supplier data to common driver
 data structure

Having the clocks provider data in struct samsung_i2s_priv, i.e. per the I2S
controller instance, rather than per CPU DAI better models the hardware and
simplifies the code a little. The clock provider is common for both DAIs.

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 | 68 ++++++++++++++++++++---------------------
 1 file changed, 33 insertions(+), 35 deletions(-)

diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 273620914471..fffc76ab60da 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -99,9 +99,7 @@ struct i2s_dai {
 
 	spinlock_t *lock;
 
-	/* Below fields are only valid if this is the primary FIFO */
-	struct clk *clk_table[3];
-	struct clk_onecell_data clk_data;
+	struct samsung_i2s_priv *priv;
 };
 
 /* Lock for cross i/f checks */
@@ -118,6 +116,10 @@ struct samsung_i2s_priv {
 	struct i2s_dai *dai;
 	struct snd_soc_dai_driver *dai_drv;
 	int num_dais;
+
+	/* 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)
@@ -625,11 +627,10 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai,
 	return ret;
 }
 
-static int i2s_set_fmt(struct snd_soc_dai *dai,
-	unsigned int fmt)
+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);
-	struct i2s_dai *other = get_other_dai(i2s);
 	int lrp_shift, sdf_shift, sdf_mask, lrp_rlow, mod_slave;
 	u32 mod, tmp = 0;
 	unsigned long flags;
@@ -687,8 +688,7 @@ static int i2s_set_fmt(struct snd_soc_dai *dai,
 		 * CLK_I2S_RCLK_SRC clock is not exposed so we ensure any
 		 * clock configuration assigned in DT is not overwritten.
 		 */
-		if (i2s->rclk_srcrate == 0 && i2s->clk_data.clks == NULL &&
-		    other->clk_data.clks == NULL)
+		if (i2s->rclk_srcrate == 0 && priv->clk_data.clks == NULL)
 			i2s_set_sysclk(dai, SAMSUNG_I2S_RCLKSRC_0,
 							0, SND_SOC_CLOCK_IN);
 		break;
@@ -725,8 +725,8 @@ static int i2s_set_fmt(struct snd_soc_dai *dai,
 static int i2s_hw_params(struct snd_pcm_substream *substream,
 	struct snd_pcm_hw_params *params, 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);
 	u32 mod, mask = 0, val = 0;
 	struct clk *rclksrc;
 	unsigned long flags;
@@ -811,10 +811,7 @@ static int i2s_hw_params(struct snd_pcm_substream *substream,
 
 	i2s->frmclk = params_rate(params);
 
-	rclksrc = i2s->clk_table[CLK_I2S_RCLK_SRC];
-	if (!rclksrc || IS_ERR(rclksrc))
-		rclksrc = other->clk_table[CLK_I2S_RCLK_SRC];
-
+	rclksrc = priv->clk_table[CLK_I2S_RCLK_SRC];
 	if (rclksrc && !IS_ERR(rclksrc))
 		i2s->rclk_srcrate = clk_get_rate(rclksrc);
 
@@ -1221,31 +1218,30 @@ static int i2s_runtime_resume(struct device *dev)
 }
 #endif /* CONFIG_PM */
 
-static void i2s_unregister_clocks(struct i2s_dai *i2s)
+static void i2s_unregister_clocks(struct samsung_i2s_priv *priv)
 {
 	int i;
 
-	for (i = 0; i < i2s->clk_data.clk_num; i++) {
-		if (!IS_ERR(i2s->clk_table[i]))
-			clk_unregister(i2s->clk_table[i]);
+	for (i = 0; i < priv->clk_data.clk_num; i++) {
+		if (!IS_ERR(priv->clk_table[i]))
+			clk_unregister(priv->clk_table[i]);
 	}
 }
 
-static void i2s_unregister_clock_provider(struct platform_device *pdev)
+static void i2s_unregister_clock_provider(struct samsung_i2s_priv *priv)
 {
-	struct i2s_dai *i2s = samsung_i2s_get_pri_dai(&pdev->dev);
-
-	of_clk_del_provider(pdev->dev.of_node);
-	i2s_unregister_clocks(i2s);
+	of_clk_del_provider(priv->pdev->dev.of_node);
+	i2s_unregister_clocks(priv);
 }
 
-static int i2s_register_clock_provider(struct platform_device *pdev)
+
+static int i2s_register_clock_provider(struct samsung_i2s_priv *priv)
 {
 
 	const char * const i2s_clk_desc[] = { "cdclk", "rclk_src", "prescaler" };
 	const char *clk_name[2] = { "i2s_opclk0", "i2s_opclk1" };
 	const char *p_names[2] = { NULL };
-	struct device *dev = &pdev->dev;
+	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 char *i2s_clk_name[ARRAY_SIZE(i2s_clk_desc)];
@@ -1277,37 +1273,37 @@ static int i2s_register_clock_provider(struct platform_device *pdev)
 		u32 val = readl(i2s->addr + I2SPSR);
 		writel(val | PSR_PSREN, i2s->addr + I2SPSR);
 
-		i2s->clk_table[CLK_I2S_RCLK_SRC] = clk_register_mux(dev,
+		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,
 				1, 0, i2s->lock);
 
-		i2s->clk_table[CLK_I2S_RCLK_PSR] = clk_register_divider(dev,
+		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);
 
 		p_names[0] = i2s_clk_name[CLK_I2S_RCLK_PSR];
-		i2s->clk_data.clk_num = 2;
+		priv->clk_data.clk_num = 2;
 	}
 
-	i2s->clk_table[CLK_I2S_CDCLK] = clk_register_gate(dev,
+	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,
 				CLK_GATE_SET_TO_DISABLE, i2s->lock);
 
-	i2s->clk_data.clk_num += 1;
-	i2s->clk_data.clks = i2s->clk_table;
+	priv->clk_data.clk_num += 1;
+	priv->clk_data.clks = priv->clk_table;
 
 	ret = of_clk_add_provider(dev->of_node, of_clk_src_onecell_get,
-				  &i2s->clk_data);
+				  &priv->clk_data);
 	if (ret < 0) {
 		dev_err(dev, "failed to add clock provider: %d\n", ret);
-		i2s_unregister_clocks(i2s);
+		i2s_unregister_clocks(priv);
 	}
 
 	return ret;
@@ -1426,6 +1422,7 @@ static int samsung_i2s_probe(struct platform_device *pdev)
 	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)
 		pri_dai->drv->playback.channels_max = 6;
@@ -1454,6 +1451,7 @@ static int samsung_i2s_probe(struct platform_device *pdev)
 		sec_dai->quirks = quirks;
 		sec_dai->idma_playback.addr = idma_addr;
 		sec_dai->pri_dai = pri_dai;
+		sec_dai->priv = priv;
 		pri_dai->sec_dai = sec_dai;
 
 		ret = i2s_create_secondary_device(priv);
@@ -1485,11 +1483,11 @@ static int samsung_i2s_probe(struct platform_device *pdev)
 	pm_runtime_set_active(&pdev->dev);
 	pm_runtime_enable(&pdev->dev);
 
-	ret = i2s_register_clock_provider(pdev);
+	ret = i2s_register_clock_provider(priv);
 	if (ret < 0)
 		goto err_disable_pm;
 
-	pri_dai->op_clk = clk_get_parent(pri_dai->clk_table[CLK_I2S_RCLK_SRC]);
+	pri_dai->op_clk = clk_get_parent(priv->clk_table[CLK_I2S_RCLK_SRC]);
 
 	return 0;
 
@@ -1513,7 +1511,7 @@ static int samsung_i2s_remove(struct platform_device *pdev)
 	pm_runtime_get_sync(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
 
-	i2s_unregister_clock_provider(pdev);
+	i2s_unregister_clock_provider(priv);
 	clk_disable_unprepare(pri_dai->clk);
 	pm_runtime_put_noidle(&pdev->dev);
 	i2s_delete_secondary_device(priv);
-- 
2.20.1