openwrt/target/linux/bcm27xx/patches-5.4/950-0636-Fixes-a-problem-with-clock-settings-of-HiFiBerry-DAC.patch

From f303194bc24925d3efd965ccfae40974ea437240 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Schambacher?=
 <j-schambacher@users.noreply.github.com>
Date: Wed, 15 Apr 2020 11:48:29 +0200
Subject: [PATCH] Fixes a problem with clock settings of HiFiBerry
 DAC+ADC PRO (#3545)

This patch fixes a problem of the re-calculation of
i2s-clock and -parameter settings when only the ADC is activated.

Signed-off-by: Joerg Schambacher <joerg@i2audio.com>
---
 sound/soc/bcm/hifiberry_dacplusadcpro.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

--- a/sound/soc/bcm/hifiberry_dacplusadcpro.c
+++ b/sound/soc/bcm/hifiberry_dacplusadcpro.c
@@ -390,9 +390,11 @@ static int snd_rpi_hifiberry_dacplusadcp
 	int channels = params_channels(params);
 	int width = 32;
 	struct snd_soc_component *dac = rtd->codec_dais[0]->component;
+	struct snd_soc_dai *dai = rtd->codec_dais[0];
+	struct snd_soc_dai_driver *drv = dai->driver;
+	const struct snd_soc_dai_ops *ops = drv->ops;
 
 	if (snd_rpi_hifiberry_is_dacpro) {
-
 		width = snd_pcm_format_physical_width(params_format(params));
 
 		snd_rpi_hifiberry_dacplusadcpro_set_sclk(dac,
@@ -414,6 +416,11 @@ static int snd_rpi_hifiberry_dacplusadcp
 		return ret;
 	ret = snd_soc_dai_set_tdm_slot(rtd->codec_dais[1], 0x03, 0x03,
 		channels, width);
+	if (ret)
+		return ret;
+
+	if (snd_rpi_hifiberry_is_dacpro && ops->hw_params)
+			ret = ops->hw_params(substream, params, dai);
 	return ret;
 }