diff mbox

Applied "ASoC: adau17x1: Handling of DSP_RUN register during fw setup" to the asoc tree

Message ID E1f6woX-0000I7-PH@debutante (mailing list archive)
State New, archived
Headers show

Commit Message

Mark Brown April 13, 2018, 11:24 a.m. UTC
The patch

   ASoC: adau17x1: Handling of DSP_RUN register during fw setup

has been applied to the asoc tree at


All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
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should be sent as incremental updates against current git, existing
patches will not be replaced.

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From d0f8b9c5a350ca6fa842b52bfb88b77b34ee485b Mon Sep 17 00:00:00 2001
From: Danny Smith <dannys@axis.com>
Date: Mon, 9 Apr 2018 15:13:35 +0200
Subject: [PATCH] ASoC: adau17x1: Handling of DSP_RUN register during fw setup

DSP_RUN needs to be disabled during firmware write otherwise
we can end up with undefined behavior if writing to a dsp which
is already running firmware.

Signed-off-by: Danny Smith <dannys@axis.com>
Signed-off-by: Robert Rosengren <robert.rosengren@axis.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
 sound/soc/codecs/adau17x1.c | 26 ++++++++++++++++++++------
 sound/soc/codecs/adau17x1.h |  3 ++-
 2 files changed, 22 insertions(+), 7 deletions(-)
diff mbox


diff --git a/sound/soc/codecs/adau17x1.c b/sound/soc/codecs/adau17x1.c
index 80c2a06285bb..12bf24c26818 100644
--- a/sound/soc/codecs/adau17x1.c
+++ b/sound/soc/codecs/adau17x1.c
@@ -502,7 +502,7 @@  static int adau17x1_hw_params(struct snd_pcm_substream *substream,
 	if (adau->sigmadsp) {
-		ret = adau17x1_setup_firmware(adau, params_rate(params));
+		ret = adau17x1_setup_firmware(component, params_rate(params));
 		if (ret < 0)
 			return ret;
@@ -835,26 +835,40 @@  bool adau17x1_volatile_register(struct device *dev, unsigned int reg)
-int adau17x1_setup_firmware(struct adau *adau, unsigned int rate)
+int adau17x1_setup_firmware(struct snd_soc_component *component,
+	unsigned int rate)
 	int ret;
-	int dspsr;
+	int dspsr, dsp_run;
+	struct adau *adau = snd_soc_component_get_drvdata(component);
+	struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
+	snd_soc_dapm_mutex_lock(dapm);
 	ret = regmap_read(adau->regmap, ADAU17X1_DSP_SAMPLING_RATE, &dspsr);
 	if (ret)
-		return ret;
+		goto err;
+	ret = regmap_read(adau->regmap, ADAU17X1_DSP_RUN, &dsp_run);
+	if (ret)
+		goto err;
 	regmap_write(adau->regmap, ADAU17X1_DSP_ENABLE, 1);
 	regmap_write(adau->regmap, ADAU17X1_DSP_SAMPLING_RATE, 0xf);
+	regmap_write(adau->regmap, ADAU17X1_DSP_RUN, 0);
 	ret = sigmadsp_setup(adau->sigmadsp, rate);
 	if (ret) {
 		regmap_write(adau->regmap, ADAU17X1_DSP_ENABLE, 0);
-		return ret;
+		goto err;
 	regmap_write(adau->regmap, ADAU17X1_DSP_SAMPLING_RATE, dspsr);
+	regmap_write(adau->regmap, ADAU17X1_DSP_RUN, dsp_run);
-	return 0;
+	snd_soc_dapm_mutex_unlock(dapm);
+	return ret;
diff --git a/sound/soc/codecs/adau17x1.h b/sound/soc/codecs/adau17x1.h
index a7b1cb770814..e6fe87beec07 100644
--- a/sound/soc/codecs/adau17x1.h
+++ b/sound/soc/codecs/adau17x1.h
@@ -68,7 +68,8 @@  int adau17x1_resume(struct snd_soc_component *component);
 extern const struct snd_soc_dai_ops adau17x1_dai_ops;
-int adau17x1_setup_firmware(struct adau *adau, unsigned int rate);
+int adau17x1_setup_firmware(struct snd_soc_component *component,
+	unsigned int rate);
 bool adau17x1_has_dsp(struct adau *adau);
 #define ADAU17X1_CLOCK_CONTROL			0x4000