This is a note to let you know that I've just added the patch titled

ASoC: topology: Fix bclk and fsync inversion in set_link_hw_format()

to the 4.17-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summ...

The filename of the patch is: asoc-topology-fix-bclk-and-fsync-inversion-in-set_link_hw_format.patch and it can be found in the queue-4.17 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Sat Jul 28 10:14:31 CEST 2018

From: Kirill Marinushkin k.marinushkin@gmail.com Date: Wed, 4 Apr 2018 06:19:37 +0200 Subject: ASoC: topology: Fix bclk and fsync inversion in set_link_hw_format()

From: Kirill Marinushkin k.marinushkin@gmail.com

[ Upstream commit a941e2fab3207cb0d57dc4ec47b1b12c8ea78b84 ]

The values of bclk and fsync are inverted WRT the codec. But the existing solution already works for Broadwell, see the alsa-lib config:

`alsa-lib/src/conf/topology/broadwell/broadwell.conf`

This commit provides the backwards-compatible solution to fix this misuse.

Signed-off-by: Kirill Marinushkin k.marinushkin@gmail.com Reviewed-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Tested-by: Pan Xiuli xiuli.pan@linux.intel.com Tested-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Cc: Jaroslav Kysela perex@perex.cz Cc: Takashi Iwai tiwai@suse.de Cc: Mark Brown broonie@kernel.org Cc: Liam Girdwood liam.r.girdwood@linux.intel.com Cc: linux-kernel@vger.kernel.org Cc: alsa-devel@alsa-project.org Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- include/uapi/sound/asoc.h | 16 ++++++++++++++-- sound/soc/soc-topology.c | 12 +++++++----- 2 files changed, 21 insertions(+), 7 deletions(-)

--- a/include/uapi/sound/asoc.h +++ b/include/uapi/sound/asoc.h @@ -160,6 +160,18 @@ #define SND_SOC_TPLG_LNK_FLGBIT_SYMMETRIC_SAMPLEBITS (1 << 2) #define SND_SOC_TPLG_LNK_FLGBIT_VOICE_WAKEUP (1 << 3)

+/* DAI topology BCLK parameter + * For the backwards capability, by default codec is bclk master + */ +#define SND_SOC_TPLG_BCLK_CM 0 /* codec is bclk master */ +#define SND_SOC_TPLG_BCLK_CS 1 /* codec is bclk slave */ + +/* DAI topology FSYNC parameter + * For the backwards capability, by default codec is fsync master + */ +#define SND_SOC_TPLG_FSYNC_CM 0 /* codec is fsync master */ +#define SND_SOC_TPLG_FSYNC_CS 1 /* codec is fsync slave */ + /* * Block Header. * This header precedes all object and object arrays below. @@ -315,8 +327,8 @@ struct snd_soc_tplg_hw_config { __u8 clock_gated; /* 1 if clock can be gated to save power */ __u8 invert_bclk; /* 1 for inverted BCLK, 0 for normal */ __u8 invert_fsync; /* 1 for inverted frame clock, 0 for normal */ - __u8 bclk_master; /* 1 for master of BCLK, 0 for slave */ - __u8 fsync_master; /* 1 for master of FSYNC, 0 for slave */ + __u8 bclk_master; /* SND_SOC_TPLG_BCLK_ value */ + __u8 fsync_master; /* SND_SOC_TPLG_FSYNC_ value */ __u8 mclk_direction; /* 0 for input, 1 for output */ __le16 reserved; /* for 32bit alignment */ __le32 mclk_rate; /* MCLK or SYSCLK freqency in Hz */ --- a/sound/soc/soc-topology.c +++ b/sound/soc/soc-topology.c @@ -2019,13 +2019,15 @@ static void set_link_hw_format(struct sn link->dai_fmt |= SND_SOC_DAIFMT_IB_IF;

/* clock masters */ - bclk_master = hw_config->bclk_master; - fsync_master = hw_config->fsync_master; - if (!bclk_master && !fsync_master) + bclk_master = (hw_config->bclk_master == + SND_SOC_TPLG_BCLK_CM); + fsync_master = (hw_config->fsync_master == + SND_SOC_TPLG_FSYNC_CM); + if (bclk_master && fsync_master) link->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM; - else if (bclk_master && !fsync_master) - link->dai_fmt |= SND_SOC_DAIFMT_CBS_CFM; else if (!bclk_master && fsync_master) + link->dai_fmt |= SND_SOC_DAIFMT_CBS_CFM; + else if (bclk_master && !fsync_master) link->dai_fmt |= SND_SOC_DAIFMT_CBM_CFS; else link->dai_fmt |= SND_SOC_DAIFMT_CBS_CFS;

Patches currently in stable-queue which might be from k.marinushkin@gmail.com are

queue-4.17/asoc-topology-fix-bclk-and-fsync-inversion-in-set_link_hw_format.patch queue-4.17/asoc-topology-add-missing-clock-gating-parameter-when-parsing-hw_configs.patch