linux-kernel - [PATCH v3 2/5] ASoC: fsl_sai: Update Tx/Rx channel enable mask

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Message-Id: <20190806151214.6783-3-daniel.baluta@nxp.com>
Date:   Tue,  6 Aug 2019 18:12:11 +0300
From:   Daniel Baluta <daniel.baluta@....com>
To:     broonie@...nel.org
Cc:     l.stach@...gutronix.de, mihai.serban@...il.com,
        alsa-devel@...a-project.org, timur@...nel.org,
        shengjiu.wang@....com, angus@...ea.ca, tiwai@...e.com,
        nicoleotsuka@...il.com, linux-imx@....com, kernel@...gutronix.de,
        festevam@...il.com, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, robh@...nel.org,
        Daniel Baluta <daniel.baluta@....com>
Subject: [PATCH v3 2/5] ASoC: fsl_sai: Update Tx/Rx channel enable mask

Tx channel enable (TCE) / Rx channel enable (RCE) bits
enable corresponding data channel for Tx/Rx operation.

Because SAI supports up the 8 channels TCE/RCE occupy
up the 8 bits inside TCR3/RCR3 registers we need to extend
the mask to reflect this.

Signed-off-by: Daniel Baluta <daniel.baluta@....com>
---
 sound/soc/fsl/fsl_sai.c | 6 ++++--
 sound/soc/fsl/fsl_sai.h | 1 +
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
index 17b0aff4ee8b..637b1d12a575 100644
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -599,7 +599,8 @@ static int fsl_sai_startup(struct snd_pcm_substream *substream,
 	bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 	int ret;
 
-	regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx), FSL_SAI_CR3_TRCE,
+	regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx),
+			   FSL_SAI_CR3_TRCE_MASK,
 			   FSL_SAI_CR3_TRCE);
 
 	ret = snd_pcm_hw_constraint_list(substream->runtime, 0,
@@ -614,7 +615,8 @@ static void fsl_sai_shutdown(struct snd_pcm_substream *substream,
 	struct fsl_sai *sai = snd_soc_dai_get_drvdata(cpu_dai);
 	bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 
-	regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx), FSL_SAI_CR3_TRCE, 0);
+	regmap_update_bits(sai->regmap, FSL_SAI_xCR3(tx),
+			   FSL_SAI_CR3_TRCE_MASK, 0);
 }
 
 static const struct snd_soc_dai_ops fsl_sai_pcm_dai_ops = {
diff --git a/sound/soc/fsl/fsl_sai.h b/sound/soc/fsl/fsl_sai.h
index 4bb478041d67..20c5b9b1e8bc 100644
--- a/sound/soc/fsl/fsl_sai.h
+++ b/sound/soc/fsl/fsl_sai.h
@@ -110,6 +110,7 @@
 
 /* SAI Transmit and Receive Configuration 3 Register */
 #define FSL_SAI_CR3_TRCE	BIT(16)
+#define FSL_SAI_CR3_TRCE_MASK	GENMASK(23, 16)
 #define FSL_SAI_CR3_WDFL(x)	(x)
 #define FSL_SAI_CR3_WDFL_MASK	0x1f
 
-- 
2.17.1