Merge tag 'sound-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "This became a large update. The changes are scattered widely, and the
  majority of them are attributed to ASoC componentization. The gitk
  output made me dizzy, but it's slightly better than London tube.

  OK, below are some highlights:

   - Continued hardening works in ALSA PCM core; most of the existing
     syzkaller reports should have been covered.

   - USB-audio got the initial USB Audio Class 3 support, as well as
     UAC2 jack detection support and more DSD-device support.

   - ASoC componentization: finally each individual driver was converted
     to components framework, which is more future-proof for further
     works. Most of conversations were systematic.

   - Lots of fixes for Intel Baytrail / Cherrytrail devices with Realtek
     codecs, typically tablets and small PCs.

   - Fixes / cleanups for Samsung Odroid systems

   - Cleanups in Freescale SSI driver

   - New ASoC drivers:
      * AKM AK4458 and AK5558 codecs
      * A few AMD based machine drivers
      * Intel Kabylake machine drivers
      * Maxim MAX9759 codec
      * Motorola CPCAP codec
      * Socionext Uniphier SoCs
      * TI PCM1789 and TDA7419 codecs

   - Retirement of Blackfin drivers along with architecture removal"

* tag 'sound-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (497 commits)
  ALSA: pcm: Fix UAF at PCM release via PCM timer access
  ALSA: usb-audio: silence a static checker warning
  ASoC: tscs42xx: Remove owner assignment from i2c_driver
  ASoC: mediatek: remove "simple-mfd" in the example
  ASoC: cpcap: replace codec to component
  ASoC: Intel: bytcr_rt5651: don't use codec anymore
  ASoC: amd: don't use codec anymore
  ALSA: usb-audio: fix memory leak on cval
  ALSA: pcm: Fix mutex unbalance in OSS emulation ioctls
  ASoC: topology: Fix kcontrol name string handling
  ALSA: aloop: Mark paused device as inactive
  ALSA: usb-audio: update clock valid control
  ALSA: usb-audio: UAC2 jack detection
  ALSA: pcm: Return -EBUSY for OSS ioctls changing busy streams
  ALSA: pcm: Avoid potential races between OSS ioctls and read/write
  ALSA: usb-audio: Integrate native DSD support for ITF-USB based DACs.
  ALSA: usb-audio: FIX native DSD support for TEAC UD-501 DAC
  ALSA: usb-audio: Add native DSD support for Luxman DA-06
  ALSA: usb-audio: fix uac control query argument
  ASoC: nau8824: recover system clock when device changes
  ...

1 files changed, 177 insertions, 52 deletions

diff --git a/sound/soc/samsung/snow.c b/sound/soc/samsung/snow.c
index d8ac907bbb0d..5d8efc2d5c38 100644
--- a/sound/soc/samsung/snow.c
+++ b/sound/soc/samsung/snow.c
@@ -11,97 +11,207 @@
  * General Public License for more details.
  */
 
+#include <linux/clk.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
-
+#include <sound/pcm_params.h>
 #include <sound/soc.h>
 
 #include "i2s.h"
 
 #define FIN_PLL_RATE		24000000
 
-static struct snd_soc_dai_link snow_dai[] = {
-	{
-		.name = "Primary",
-		.stream_name = "Primary",
-		.codec_dai_name = "HiFi",
-		.dai_fmt = SND_SOC_DAIFMT_I2S |
-				SND_SOC_DAIFMT_NB_NF |
-				SND_SOC_DAIFMT_CBS_CFS,
-	},
+struct snow_priv {
+	struct snd_soc_dai_link dai_link;
+	struct clk *clk_i2s_bus;
+};
+
+static int snow_card_hw_params(struct snd_pcm_substream *substream,
+				      struct snd_pcm_hw_params *params)
+{
+	static const unsigned int pll_rate[] = {
+		73728000U, 67737602U, 49152000U, 45158401U, 32768001U
+	};
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snow_priv *priv = snd_soc_card_get_drvdata(rtd->card);
+	int bfs, psr, rfs, bitwidth;
+	unsigned long int rclk;
+	long int freq = -EINVAL;
+	int ret, i;
+
+	bitwidth = snd_pcm_format_width(params_format(params));
+	if (bitwidth < 0) {
+		dev_err(rtd->card->dev, "Invalid bit-width: %d\n", bitwidth);
+		return bitwidth;
+	}
+
+	if (bitwidth != 16 && bitwidth != 24) {
+		dev_err(rtd->card->dev, "Unsupported bit-width: %d\n", bitwidth);
+		return -EINVAL;
+	}
+
+	bfs = 2 * bitwidth;
+
+	switch (params_rate(params)) {
+	case 16000:
+	case 22050:
+	case 24000:
+	case 32000:
+	case 44100:
+	case 48000:
+	case 88200:
+	case 96000:
+		rfs = 8 * bfs;
+		break;
+	case 64000:
+		rfs = 384;
+		break;
+	case 8000:
+	case 11025:
+	case 12000:
+		rfs = 16 * bfs;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	rclk = params_rate(params) * rfs;
+
+	for (psr = 8; psr > 0; psr /= 2) {
+		for (i = 0; i < ARRAY_SIZE(pll_rate); i++) {
+			if ((pll_rate[i] - rclk * psr) <= 2) {
+				freq = pll_rate[i];
+				break;
+			}
+		}
+	}
+	if (freq < 0) {
+		dev_err(rtd->card->dev, "Unsupported RCLK rate: %lu\n", rclk);
+		return -EINVAL;
+	}
+
+	ret = clk_set_rate(priv->clk_i2s_bus, freq);
+	if (ret < 0) {
+		dev_err(rtd->card->dev, "I2S bus clock rate set failed\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static const struct snd_soc_ops snow_card_ops = {
+	.hw_params = snow_card_hw_params,
 };
 
 static int snow_late_probe(struct snd_soc_card *card)
 {
 	struct snd_soc_pcm_runtime *rtd;
 	struct snd_soc_dai *codec_dai;
-	struct snd_soc_dai *cpu_dai;
-	int ret;
 
 	rtd = snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
-	codec_dai = rtd->codec_dai;
-	cpu_dai = rtd->cpu_dai;
 
-	/* Set the MCLK rate for the codec */
-	ret = snd_soc_dai_set_sysclk(codec_dai, 0,
-					FIN_PLL_RATE, SND_SOC_CLOCK_IN);
-	if (ret < 0)
-		return ret;
+	/* In the multi-codec case codec_dais 0 is MAX98095 and 1 is HDMI. */
+	if (rtd->num_codecs > 1)
+		codec_dai = rtd->codec_dais[0];
+	else
+		codec_dai = rtd->codec_dai;
 
-	/* Select I2S Bus clock to set RCLK and BCLK */
-	ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
-					0, SND_SOC_CLOCK_IN);
-	if (ret < 0)
-		return ret;
-
-	return 0;
+	/* Set the MCLK rate for the codec */
+	return snd_soc_dai_set_sysclk(codec_dai, 0,
+				FIN_PLL_RATE, SND_SOC_CLOCK_IN);
 }
 
 static struct snd_soc_card snow_snd = {
 	.name = "Snow-I2S",
 	.owner = THIS_MODULE,
-	.dai_link = snow_dai,
-	.num_links = ARRAY_SIZE(snow_dai),
-
 	.late_probe = snow_late_probe,
 };
 
 static int snow_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
 	struct snd_soc_card *card = &snow_snd;
-	struct device_node *i2s_node, *codec_node;
-	int i, ret;
-
-	i2s_node = of_parse_phandle(pdev->dev.of_node,
-				    "samsung,i2s-controller", 0);
-	if (!i2s_node) {
-		dev_err(&pdev->dev,
-			"Property 'i2s-controller' missing or invalid\n");
-		return -EINVAL;
-	}
+	struct device_node *cpu, *codec;
+	struct snd_soc_dai_link *link;
+	struct snow_priv *priv;
+	int ret;
 
-	codec_node = of_parse_phandle(pdev->dev.of_node,
-				      "samsung,audio-codec", 0);
-	if (!codec_node) {
-		dev_err(&pdev->dev,
-			"Property 'audio-codec' missing or invalid\n");
-		return -EINVAL;
-	}
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	link = &priv->dai_link;
+
+	link->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+			SND_SOC_DAIFMT_CBS_CFS;
+
+	link->name = "Primary";
+	link->stream_name = link->name;
+
+	card->dai_link = link;
+	card->num_links = 1;
+	card->dev = dev;
+
+	/* Try new DT bindings with HDMI support first. */
+	cpu = of_get_child_by_name(dev->of_node, "cpu");
+
+	if (cpu) {
+		link->ops = &snow_card_ops;
 
-	for (i = 0; i < ARRAY_SIZE(snow_dai); i++) {
-		snow_dai[i].codec_of_node = codec_node;
-		snow_dai[i].cpu_of_node = i2s_node;
-		snow_dai[i].platform_of_node = i2s_node;
+		link->cpu_of_node = of_parse_phandle(cpu, "sound-dai", 0);
+		of_node_put(cpu);
+
+		if (!link->cpu_of_node) {
+			dev_err(dev, "Failed parsing cpu/sound-dai property\n");
+			return -EINVAL;
+		}
+
+		codec = of_get_child_by_name(dev->of_node, "codec");
+		ret = snd_soc_of_get_dai_link_codecs(dev, codec, link);
+		of_node_put(codec);
+
+		if (ret < 0) {
+			of_node_put(link->cpu_of_node);
+			dev_err(dev, "Failed parsing codec node\n");
+			return ret;
+		}
+
+		priv->clk_i2s_bus = of_clk_get_by_name(link->cpu_of_node,
+						       "i2s_opclk0");
+		if (IS_ERR(priv->clk_i2s_bus)) {
+			snd_soc_of_put_dai_link_codecs(link);
+			of_node_put(link->cpu_of_node);
+			return PTR_ERR(priv->clk_i2s_bus);
+		}
+	} else {
+		link->codec_dai_name = "HiFi",
+
+		link->cpu_of_node = of_parse_phandle(dev->of_node,
+						"samsung,i2s-controller", 0);
+		if (!link->cpu_of_node) {
+			dev_err(dev, "i2s-controller property parse error\n");
+			return -EINVAL;
+		}
+
+		link->codec_of_node = of_parse_phandle(dev->of_node,
+						"samsung,audio-codec", 0);
+		if (!link->codec_of_node) {
+			of_node_put(link->cpu_of_node);
+			dev_err(dev, "audio-codec property parse error\n");
+			return -EINVAL;
+		}
 	}
 
-	card->dev = &pdev->dev;
+	link->platform_of_node = link->cpu_of_node;
 
 	/* Update card-name if provided through DT, else use default name */
 	snd_soc_of_parse_card_name(card, "samsung,model");
 
-	ret = devm_snd_soc_register_card(&pdev->dev, card);
+	snd_soc_card_set_drvdata(card, priv);
+
+	ret = devm_snd_soc_register_card(dev, card);
 	if (ret) {
 		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
 		return ret;
@@ -110,6 +220,20 @@ static int snow_probe(struct platform_device *pdev)
 	return ret;
 }
 
+static int snow_remove(struct platform_device *pdev)
+{
+	struct snow_priv *priv = platform_get_drvdata(pdev);
+	struct snd_soc_dai_link *link = &priv->dai_link;
+
+	of_node_put(link->cpu_of_node);
+	of_node_put(link->codec_of_node);
+	snd_soc_of_put_dai_link_codecs(link);
+
+	clk_put(priv->clk_i2s_bus);
+
+	return 0;
+}
+
 static const struct of_device_id snow_of_match[] = {
 	{ .compatible = "google,snow-audio-max98090", },
 	{ .compatible = "google,snow-audio-max98091", },
@@ -125,6 +249,7 @@ static struct platform_driver snow_driver = {
 		.of_match_table = snow_of_match,
 	},
 	.probe = snow_probe,
+	.remove = snow_remove,
 };
 
 module_platform_driver(snow_driver);