linux-kernel - [PATCH 3/4] ASoC: tegra: Allow 32-bit and 24-bit samples

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Date:   Fri, 27 Jul 2018 13:59:30 +0100
From:   Jorge Sanjuan <jorge.sanjuan@...ethink.co.uk>
To:     lgirdwood@...il.com, broonie@...nel.org
Cc:     jonathanh@...dia.com, thierry.reding@...il.com,
        alsa-devel@...a-project.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-kernel@...ts.codethink.co.uk
Subject: [PATCH 3/4] ASoC: tegra: Allow 32-bit and 24-bit samples

From: Edward Cragg <edward.cragg@...ethink.co.uk>

The tegra3 audio can support 32 and 24 bit sample sizes so add
the option to the tegra30_i2s_hw_params to configure the S32_LE/S24_LE
format when requested.

Signed-off-by: Ben Dooks <ben.dooks@...ethink.co.uk>
Signed-off-by: Edward Cragg <edward.cragg@...ethink.co.uk>
[jorge.sanjuan@...ethink.co.uk: Squashed multiple patches]
Signed-off-by: Jorge Sanjuan <jorge.sanjuan@...ethink.co.uk>
---
 sound/soc/tegra/tegra30_i2s.c | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/sound/soc/tegra/tegra30_i2s.c b/sound/soc/tegra/tegra30_i2s.c
index ff1996f215ed..e26c19ef7439 100644
--- a/sound/soc/tegra/tegra30_i2s.c
+++ b/sound/soc/tegra/tegra30_i2s.c
@@ -150,6 +150,15 @@ static int tegra30_i2s_hw_params(struct snd_pcm_substream *substream,
 		val = TEGRA30_I2S_CTRL_BIT_SIZE_16;
 		sample_size = 16;
 		break;
+	case SNDRV_PCM_FORMAT_S24_LE:
+		val = TEGRA30_I2S_CTRL_BIT_SIZE_24;
+		audio_bits = TEGRA30_AUDIOCIF_BITS_24;
+		sample_size = 24;
+		break;
+	case SNDRV_PCM_FORMAT_S32_LE:
+		val = TEGRA30_I2S_CTRL_BIT_SIZE_32;
+		sample_size = 32;
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -322,14 +331,18 @@ static const struct snd_soc_dai_driver tegra30_i2s_dai_template = {
 		.channels_min = 2,
 		.channels_max = 2,
 		.rates = SNDRV_PCM_RATE_8000_96000,
-		.formats = SNDRV_PCM_FMTBIT_S16_LE,
+		.formats = SNDRV_PCM_FMTBIT_S32_LE |
+			   SNDRV_PCM_FMTBIT_S24_LE |
+			   SNDRV_PCM_FMTBIT_S16_LE,
 	},
 	.capture = {
 		.stream_name = "Capture",
 		.channels_min = 2,
 		.channels_max = 2,
 		.rates = SNDRV_PCM_RATE_8000_96000,
-		.formats = SNDRV_PCM_FMTBIT_S16_LE,
+		.formats = SNDRV_PCM_FMTBIT_S32_LE |
+			   SNDRV_PCM_FMTBIT_S24_LE |
+			   SNDRV_PCM_FMTBIT_S16_LE,
 	},
 	.ops = &tegra30_i2s_dai_ops,
 	.symmetric_rates = 1,
-- 
2.11.0