linux-kernel - [PATCH v2 3/6] ASoC: atmel_ssc_dai: implement left-justified data mode

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Date:   Sat, 24 Aug 2019 22:26:54 +0200
From:   Michał Mirosław <mirq-linux@...e.qmqm.pl>
To:     alsa-devel@...a-project.org, devicetree@...r.kernel.org
Cc:     Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Arnd Bergmann <arnd@...db.de>,
        Chas Williams <3chas3@...il.com>,
        Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Liam Girdwood <lgirdwood@...il.com>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>,
        Mark Brown <broonie@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Rob Herring <robh-dt@...nel.org>,
        Takashi Iwai <tiwai@...e.com>, linux-kernel@...r.kernel.org
Subject: [PATCH v2 3/6] ASoC: atmel_ssc_dai: implement left-justified data
 mode

Enable support for left-justified data mode for SSC-codec link.

Signed-off-by: Michał Mirosław <mirq-linux@...e.qmqm.pl>

---
 v2: rebased

---
 sound/soc/atmel/atmel_ssc_dai.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/sound/soc/atmel/atmel_ssc_dai.c b/sound/soc/atmel/atmel_ssc_dai.c
index 7dc6ec9b8c7a..48e9eef34c0f 100644
--- a/sound/soc/atmel/atmel_ssc_dai.c
+++ b/sound/soc/atmel/atmel_ssc_dai.c
@@ -564,6 +564,15 @@ static int atmel_ssc_hw_params(struct snd_pcm_substream *substream,
 
 	switch (ssc_p->daifmt & SND_SOC_DAIFMT_FORMAT_MASK) {
 
+	case SND_SOC_DAIFMT_LEFT_J:
+		fs_osync = SSC_FSOS_POSITIVE;
+		fs_edge = SSC_START_RISING_RF;
+
+		rcmr =	  SSC_BF(RCMR_STTDLY, 0);
+		tcmr =	  SSC_BF(TCMR_STTDLY, 0);
+
+		break;
+
 	case SND_SOC_DAIFMT_I2S:
 		fs_osync = SSC_FSOS_NEGATIVE;
 		fs_edge = SSC_START_FALLING_RF;
-- 
2.20.1