linux-kernel - [PATCH 1/2] ASoC: fsl-asoc-card: Add support for WM8958 codec

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Message-Id: <1615986303-27959-1-git-send-email-shengjiu.wang@nxp.com>
Date:   Wed, 17 Mar 2021 21:05:02 +0800
From:   Shengjiu Wang <shengjiu.wang@....com>
To:     timur@...nel.org, nicoleotsuka@...il.com, Xiubo.Lee@...il.com,
        festevam@...il.com, lgirdwood@...il.com, broonie@...nel.org,
        perex@...ex.cz, tiwai@...e.com, alsa-devel@...a-project.org,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        robh+dt@...nel.org, devicetree@...r.kernel.org
Subject: [PATCH 1/2] ASoC: fsl-asoc-card: Add support for WM8958 codec

WM8958 codec is used on some i.MX based platform.
So add it support in this generic driver.

Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
---
 sound/soc/fsl/Kconfig         |  2 ++
 sound/soc/fsl/fsl-asoc-card.c | 17 +++++++++++++++--
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig
index c71c6024320b..0917d65d6921 100644
--- a/sound/soc/fsl/Kconfig
+++ b/sound/soc/fsl/Kconfig
@@ -310,6 +310,8 @@ config SND_SOC_FSL_ASOC_CARD
 	select SND_SOC_FSL_ESAI
 	select SND_SOC_FSL_SAI
 	select SND_SOC_FSL_SSI
+	select SND_SOC_WM8994
+	select MFD_WM8994
 	help
 	 ALSA SoC Audio support with ASRC feature for Freescale SoCs that have
 	 ESAI/SAI/SSI and connect with external CODECs such as WM8962, CS42888,
diff --git a/sound/soc/fsl/fsl-asoc-card.c b/sound/soc/fsl/fsl-asoc-card.c
index f62f81ceab0d..c62bfd1c3ac7 100644
--- a/sound/soc/fsl/fsl-asoc-card.c
+++ b/sound/soc/fsl/fsl-asoc-card.c
@@ -25,6 +25,7 @@
 #include "../codecs/sgtl5000.h"
 #include "../codecs/wm8962.h"
 #include "../codecs/wm8960.h"
+#include "../codecs/wm8994.h"
 
 #define CS427x_SYSCLK_MCLK 0
 
@@ -37,12 +38,14 @@
 /**
  * struct codec_priv - CODEC private data
  * @mclk_freq: Clock rate of MCLK
+ * @free_freq: Clock rate of MCLK for hw_free()
  * @mclk_id: MCLK (or main clock) id for set_sysclk()
  * @fll_id: FLL (or secordary clock) id for set_sysclk()
  * @pll_id: PLL id for set_pll()
  */
 struct codec_priv {
 	unsigned long mclk_freq;
+	unsigned long free_freq;
 	u32 mclk_id;
 	u32 fll_id;
 	u32 pll_id;
@@ -235,10 +238,10 @@ static int fsl_asoc_card_hw_free(struct snd_pcm_substream *substream)
 	priv->streams &= ~BIT(substream->stream);
 
 	if (!priv->streams && codec_priv->pll_id && codec_priv->fll_id) {
-		/* Force freq to be 0 to avoid error message in codec */
+		/* Force freq to be free_freq to avoid error message in codec */
 		ret = snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0),
 					     codec_priv->mclk_id,
-					     0,
+					     codec_priv->free_freq,
 					     SND_SOC_CLOCK_IN);
 		if (ret) {
 			dev_err(dev, "failed to switch away from FLL: %d\n", ret);
@@ -665,6 +668,15 @@ static int fsl_asoc_card_probe(struct platform_device *pdev)
 		priv->dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;
 		priv->card.dapm_routes = audio_map_rx;
 		priv->card.num_dapm_routes = ARRAY_SIZE(audio_map_rx);
+	} else if (of_device_is_compatible(np, "fsl,imx-audio-wm8958")) {
+		codec_dai_name = "wm8994-aif1";
+		priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM;
+		priv->codec_priv.mclk_id = WM8994_FLL_SRC_MCLK1;
+		priv->codec_priv.fll_id = WM8994_SYSCLK_FLL1;
+		priv->codec_priv.pll_id = WM8994_FLL1;
+		priv->codec_priv.free_freq = priv->codec_priv.mclk_freq;
+		priv->card.dapm_routes = NULL;
+		priv->card.num_dapm_routes = 0;
 	} else {
 		dev_err(&pdev->dev, "unknown Device Tree compatible\n");
 		ret = -EINVAL;
@@ -882,6 +894,7 @@ static const struct of_device_id fsl_asoc_card_dt_ids[] = {
 	{ .compatible = "fsl,imx-audio-mqs", },
 	{ .compatible = "fsl,imx-audio-wm8524", },
 	{ .compatible = "fsl,imx-audio-si476x", },
+	{ .compatible = "fsl,imx-audio-wm8958", },
 	{}
 };
 MODULE_DEVICE_TABLE(of, fsl_asoc_card_dt_ids);
-- 
2.27.0