linux-kernel - [PATCH] ASoC: stm32: sai: increase channels

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Date:   Wed, 17 Nov 2021 12:00:31 +0100
From:   Olivier Moysan <olivier.moysan@...s.st.com>
To:     Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Arnaud Pouliquen <arnaud.pouliquen@...s.st.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        "Liam Girdwood" <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        "Maxime Coquelin" <mcoquelin.stm32@...il.com>,
        Olivier Moysan <olivier.moysan@...s.st.com>,
        Takashi Iwai <tiwai@...e.com>
CC:     <alsa-devel@...a-project.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        Olivier Moysan <olivier.moysan@...com>
Subject: [PATCH] ASoC: stm32: sai: increase channels_max limit

From: Olivier Moysan <olivier.moysan@...com>

The SAI peripheral supports up to 16 channels in TDM mode (8L+8R).
The driver currently supports TDM over two channels.
Increase SAI DAI playback/record channels_max,
to also allow up to 16 channels in TDM mode.

Signed-off-by: Olivier Moysan <olivier.moysan@...com>
---
 sound/soc/stm/stm32_sai_sub.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/stm/stm32_sai_sub.c b/sound/soc/stm/stm32_sai_sub.c
index 9c3b8e209656..95cd38a502bb 100644
--- a/sound/soc/stm/stm32_sai_sub.c
+++ b/sound/soc/stm/stm32_sai_sub.c
@@ -1294,7 +1294,7 @@ static struct snd_soc_dai_driver stm32_sai_playback_dai = {
 		.id = 1, /* avoid call to fmt_single_name() */
 		.playback = {
 			.channels_min = 1,
-			.channels_max = 2,
+			.channels_max = 16,
 			.rate_min = 8000,
 			.rate_max = 192000,
 			.rates = SNDRV_PCM_RATE_CONTINUOUS,
@@ -1312,7 +1312,7 @@ static struct snd_soc_dai_driver stm32_sai_capture_dai = {
 		.id = 1, /* avoid call to fmt_single_name() */
 		.capture = {
 			.channels_min = 1,
-			.channels_max = 2,
+			.channels_max = 16,
 			.rate_min = 8000,
 			.rate_max = 192000,
 			.rates = SNDRV_PCM_RATE_CONTINUOUS,
-- 
2.17.1