These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

1 files changed, 127 insertions, 33 deletions

diff --git a/kernel/sound/soc/fsl/fsl-asoc-card.c b/kernel/sound/soc/fsl/fsl-asoc-card.c
index de4388710..1b05d1c5d 100644
--- a/kernel/sound/soc/fsl/fsl-asoc-card.c
+++ b/kernel/sound/soc/fsl/fsl-asoc-card.c
@@ -14,6 +14,9 @@
 #include <linux/i2c.h>
 #include <linux/module.h>
 #include <linux/of_platform.h>
+#if IS_ENABLED(CONFIG_SND_AC97_CODEC)
+#include <sound/ac97_codec.h>
+#endif
 #include <sound/pcm_params.h>
 #include <sound/soc.h>
 
@@ -23,6 +26,7 @@
 
 #include "../codecs/sgtl5000.h"
 #include "../codecs/wm8962.h"
+#include "../codecs/wm8960.h"
 
 #define RX 0
 #define TX 1
@@ -114,6 +118,11 @@ static const struct snd_soc_dapm_widget fsl_asoc_card_dapm_widgets[] = {
 	SND_SOC_DAPM_MIC("DMIC", NULL),
 };
 
+static bool fsl_asoc_card_is_ac97(struct fsl_asoc_card_priv *priv)
+{
+	return priv->dai_fmt == SND_SOC_DAIFMT_AC97;
+}
+
 static int fsl_asoc_card_hw_params(struct snd_pcm_substream *substream,
 				   struct snd_pcm_hw_params *params)
 {
@@ -132,7 +141,9 @@ static int fsl_asoc_card_hw_params(struct snd_pcm_substream *substream,
 	 * set_bias_level(), bypass the remaining settings in hw_params().
 	 * Note: (dai_fmt & CBM_CFM) includes CBM_CFM and CBM_CFS.
 	 */
-	if (priv->card.set_bias_level && priv->dai_fmt & SND_SOC_DAIFMT_CBM_CFM)
+	if ((priv->card.set_bias_level &&
+	     priv->dai_fmt & SND_SOC_DAIFMT_CBM_CFM) ||
+	    fsl_asoc_card_is_ac97(priv))
 		return 0;
 
 	/* Specific configurations of DAIs starts from here */
@@ -299,7 +310,7 @@ static int fsl_asoc_card_audmux_init(struct device_node *np,
 	ext_port--;
 
 	/*
-	 * Use asynchronous mode (6 wires) for all cases.
+	 * Use asynchronous mode (6 wires) for all cases except AC97.
 	 * If only 4 wires are needed, just set SSI into
 	 * synchronous mode and enable 4 PADs in IOMUX.
 	 */
@@ -345,15 +356,30 @@ static int fsl_asoc_card_audmux_init(struct device_node *np,
 			   IMX_AUDMUX_V2_PTCR_TCLKDIR;
 		break;
 	default:
-		return -EINVAL;
+		if (!fsl_asoc_card_is_ac97(priv))
+			return -EINVAL;
+	}
+
+	if (fsl_asoc_card_is_ac97(priv)) {
+		int_ptcr = IMX_AUDMUX_V2_PTCR_SYN |
+			   IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
+			   IMX_AUDMUX_V2_PTCR_TCLKDIR;
+		ext_ptcr = IMX_AUDMUX_V2_PTCR_SYN |
+			   IMX_AUDMUX_V2_PTCR_TFSEL(int_port) |
+			   IMX_AUDMUX_V2_PTCR_TFSDIR;
 	}
 
 	/* Asynchronous mode can not be set along with RCLKDIR */
-	ret = imx_audmux_v2_configure_port(int_port, 0,
-					   IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
-	if (ret) {
-		dev_err(dev, "audmux internal port setup failed\n");
-		return ret;
+	if (!fsl_asoc_card_is_ac97(priv)) {
+		unsigned int pdcr =
+				IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port);
+
+		ret = imx_audmux_v2_configure_port(int_port, 0,
+						   pdcr);
+		if (ret) {
+			dev_err(dev, "audmux internal port setup failed\n");
+			return ret;
+		}
 	}
 
 	ret = imx_audmux_v2_configure_port(int_port, int_ptcr,
@@ -363,11 +389,16 @@ static int fsl_asoc_card_audmux_init(struct device_node *np,
 		return ret;
 	}
 
-	ret = imx_audmux_v2_configure_port(ext_port, 0,
-					   IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
-	if (ret) {
-		dev_err(dev, "audmux external port setup failed\n");
-		return ret;
+	if (!fsl_asoc_card_is_ac97(priv)) {
+		unsigned int pdcr =
+				IMX_AUDMUX_V2_PDCR_RXDSEL(int_port);
+
+		ret = imx_audmux_v2_configure_port(ext_port, 0,
+						   pdcr);
+		if (ret) {
+			dev_err(dev, "audmux external port setup failed\n");
+			return ret;
+		}
 	}
 
 	ret = imx_audmux_v2_configure_port(ext_port, ext_ptcr,
@@ -388,6 +419,23 @@ static int fsl_asoc_card_late_probe(struct snd_soc_card *card)
 	struct device *dev = card->dev;
 	int ret;
 
+	if (fsl_asoc_card_is_ac97(priv)) {
+#if IS_ENABLED(CONFIG_SND_AC97_CODEC)
+		struct snd_soc_codec *codec = card->rtd[0].codec;
+		struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
+
+		/*
+		 * Use slots 3/4 for S/PDIF so SSI won't try to enable
+		 * other slots and send some samples there
+		 * due to SLOTREQ bits for S/PDIF received from codec
+		 */
+		snd_ac97_update_bits(ac97, AC97_EXTENDED_STATUS,
+				     AC97_EA_SPSA_SLOT_MASK, AC97_EA_SPSA_3_4);
+#endif
+
+		return 0;
+	}
+
 	ret = snd_soc_dai_set_sysclk(codec_dai, codec_priv->mclk_id,
 				     codec_priv->mclk_freq, SND_SOC_CLOCK_IN);
 	if (ret) {
@@ -406,7 +454,7 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
 	struct platform_device *cpu_pdev;
 	struct fsl_asoc_card_priv *priv;
 	struct i2c_client *codec_dev;
-	struct clk *codec_clk;
+	const char *codec_dai_name;
 	u32 width;
 	int ret;
 
@@ -418,9 +466,8 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
 	/* Give a chance to old DT binding */
 	if (!cpu_np)
 		cpu_np = of_parse_phandle(np, "ssi-controller", 0);
-	codec_np = of_parse_phandle(np, "audio-codec", 0);
-	if (!cpu_np || !codec_np) {
-		dev_err(&pdev->dev, "phandle missing or invalid\n");
+	if (!cpu_np) {
+		dev_err(&pdev->dev, "CPU phandle missing or invalid\n");
 		ret = -EINVAL;
 		goto fail;
 	}
@@ -432,22 +479,24 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
 		goto fail;
 	}
 
-	codec_dev = of_find_i2c_device_by_node(codec_np);
-	if (!codec_dev) {
-		dev_err(&pdev->dev, "failed to find codec platform device\n");
-		ret = -EINVAL;
-		goto fail;
-	}
+	codec_np = of_parse_phandle(np, "audio-codec", 0);
+	if (codec_np)
+		codec_dev = of_find_i2c_device_by_node(codec_np);
+	else
+		codec_dev = NULL;
 
 	asrc_np = of_parse_phandle(np, "audio-asrc", 0);
 	if (asrc_np)
 		asrc_pdev = of_find_device_by_node(asrc_np);
 
 	/* Get the MCLK rate only, and leave it controlled by CODEC drivers */
-	codec_clk = clk_get(&codec_dev->dev, NULL);
-	if (!IS_ERR(codec_clk)) {
-		priv->codec_priv.mclk_freq = clk_get_rate(codec_clk);
-		clk_put(codec_clk);
+	if (codec_dev) {
+		struct clk *codec_clk = clk_get(&codec_dev->dev, NULL);
+
+		if (!IS_ERR(codec_clk)) {
+			priv->codec_priv.mclk_freq = clk_get_rate(codec_clk);
+			clk_put(codec_clk);
+		}
 	}
 
 	/* Default sample rate and format, will be updated in hw_params() */
@@ -459,6 +508,7 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
 
 	/* Diversify the card configurations */
 	if (of_device_is_compatible(np, "fsl,imx-audio-cs42888")) {
+		codec_dai_name = "cs42888";
 		priv->card.set_bias_level = NULL;
 		priv->cpu_priv.sysclk_freq[TX] = priv->codec_priv.mclk_freq;
 		priv->cpu_priv.sysclk_freq[RX] = priv->codec_priv.mclk_freq;
@@ -467,17 +517,36 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
 		priv->cpu_priv.slot_width = 32;
 		priv->dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
 	} else if (of_device_is_compatible(np, "fsl,imx-audio-sgtl5000")) {
+		codec_dai_name = "sgtl5000";
 		priv->codec_priv.mclk_id = SGTL5000_SYSCLK;
 		priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
 	} else if (of_device_is_compatible(np, "fsl,imx-audio-wm8962")) {
+		codec_dai_name = "wm8962";
 		priv->card.set_bias_level = fsl_asoc_card_set_bias_level;
 		priv->codec_priv.mclk_id = WM8962_SYSCLK_MCLK;
 		priv->codec_priv.fll_id = WM8962_SYSCLK_FLL;
 		priv->codec_priv.pll_id = WM8962_FLL;
 		priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
+	} else if (of_device_is_compatible(np, "fsl,imx-audio-wm8960")) {
+		codec_dai_name = "wm8960-hifi";
+		priv->card.set_bias_level = fsl_asoc_card_set_bias_level;
+		priv->codec_priv.fll_id = WM8960_SYSCLK_AUTO;
+		priv->codec_priv.pll_id = WM8960_SYSCLK_AUTO;
+		priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
+	} else if (of_device_is_compatible(np, "fsl,imx-audio-ac97")) {
+		codec_dai_name = "ac97-hifi";
+		priv->card.set_bias_level = NULL;
+		priv->dai_fmt = SND_SOC_DAIFMT_AC97;
 	} else {
 		dev_err(&pdev->dev, "unknown Device Tree compatible\n");
-		return -EINVAL;
+		ret = -EINVAL;
+		goto asrc_fail;
+	}
+
+	if (!fsl_asoc_card_is_ac97(priv) && !codec_dev) {
+		dev_err(&pdev->dev, "failed to find codec device\n");
+		ret = -EINVAL;
+		goto asrc_fail;
 	}
 
 	/* Common settings for corresponding Freescale CPU DAI driver */
@@ -496,7 +565,9 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
 		priv->cpu_priv.sysclk_id[0] = FSL_SAI_CLK_MAST1;
 	}
 
-	sprintf(priv->name, "%s-audio", codec_dev->name);
+	snprintf(priv->name, sizeof(priv->name), "%s-audio",
+		 fsl_asoc_card_is_ac97(priv) ? "ac97" :
+		 codec_dev->name);
 
 	/* Initialize sound card */
 	priv->pdev = pdev;
@@ -520,8 +591,26 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
 
 	/* Normal DAI Link */
 	priv->dai_link[0].cpu_of_node = cpu_np;
-	priv->dai_link[0].codec_of_node = codec_np;
-	priv->dai_link[0].codec_dai_name = codec_dev->name;
+	priv->dai_link[0].codec_dai_name = codec_dai_name;
+
+	if (!fsl_asoc_card_is_ac97(priv))
+		priv->dai_link[0].codec_of_node = codec_np;
+	else {
+		u32 idx;
+
+		ret = of_property_read_u32(cpu_np, "cell-index", &idx);
+		if (ret) {
+			dev_err(&pdev->dev,
+				"cannot get CPU index property\n");
+			goto asrc_fail;
+		}
+
+		priv->dai_link[0].codec_name =
+				devm_kasprintf(&pdev->dev, GFP_KERNEL,
+					       "ac97-codec.%u",
+					       (unsigned int)idx);
+	}
+
 	priv->dai_link[0].platform_of_node = cpu_np;
 	priv->dai_link[0].dai_fmt = priv->dai_fmt;
 	priv->card.num_links = 1;
@@ -530,8 +619,10 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
 		/* DPCM DAI Links only if ASRC exsits */
 		priv->dai_link[1].cpu_of_node = asrc_np;
 		priv->dai_link[1].platform_of_node = asrc_np;
-		priv->dai_link[2].codec_dai_name = codec_dev->name;
+		priv->dai_link[2].codec_dai_name = codec_dai_name;
 		priv->dai_link[2].codec_of_node = codec_np;
+		priv->dai_link[2].codec_name =
+				priv->dai_link[0].codec_name;
 		priv->dai_link[2].cpu_of_node = cpu_np;
 		priv->dai_link[2].dai_fmt = priv->dai_fmt;
 		priv->card.num_links = 3;
@@ -567,19 +658,22 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
 
 asrc_fail:
 	of_node_put(asrc_np);
-fail:
 	of_node_put(codec_np);
+fail:
 	of_node_put(cpu_np);
 
 	return ret;
 }
 
 static const struct of_device_id fsl_asoc_card_dt_ids[] = {
+	{ .compatible = "fsl,imx-audio-ac97", },
 	{ .compatible = "fsl,imx-audio-cs42888", },
 	{ .compatible = "fsl,imx-audio-sgtl5000", },
 	{ .compatible = "fsl,imx-audio-wm8962", },
+	{ .compatible = "fsl,imx-audio-wm8960", },
 	{}
 };
+MODULE_DEVICE_TABLE(of, fsl_asoc_card_dt_ids);
 
 static struct platform_driver fsl_asoc_card_driver = {
 	.probe = fsl_asoc_card_probe,