The patch
ASoC: add helper to change platform name for all dailinks
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
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.
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Thanks, Mark
From cb50358b83846e4dcb37137c431327c4dd68561b Mon Sep 17 00:00:00 2001
From: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Date: Fri, 25 Jan 2019 14:34:55 -0600 Subject: [PATCH] ASoC: add helper to change platform name for all dailinks
To reuse the same machine drivers with Atom/SST, Skylake and SOF, we need to change the default platform_name (or platforms->name in the "modern" representation).
So far, this override was done with an automatic override, which was broken by a set of changes for DT platforms related to deferred probe handling.
This automatic override is actually not really needed, the machine driver can already receive the platform name as a platform_data parameter. This is used e.g. for HDaudio support where we have different PCI aliases used for different platforms. We can reuse the same mechanism and modify the machine drivers to override the dailinks prior to registrating the card.
This will require additional work for SOF, but with this helper it'll be just two lines of additional code per machine driver which is reused, not the end of the world.
This helper can be simplified when all drivers have transitioned to the "modern" representation of dailinks.
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown broonie@kernel.org --- include/sound/soc.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+)
diff --git a/include/sound/soc.h b/include/sound/soc.h index 3089257ead95..95689680336b 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -1580,6 +1580,37 @@ struct snd_soc_dai *snd_soc_card_get_codec_dai(struct snd_soc_card *card, return NULL; }
+static inline +int snd_soc_fixup_dai_links_platform_name(struct snd_soc_card *card, + const char *platform_name) +{ + struct snd_soc_dai_link *dai_link; + const char *name; + int i; + + if (!platform_name) /* nothing to do */ + return 0; + + /* set platform name for each dailink */ + for_each_card_prelinks(card, i, dai_link) { + name = devm_kstrdup(card->dev, platform_name, GFP_KERNEL); + if (!name) + return -ENOMEM; + + if (dai_link->platforms) + /* only single platform is supported for now */ + dai_link->platforms->name = name; + else + /* + * legacy mode, this case will be removed when all + * derivers are switched to modern style dai_link. + */ + dai_link->platform_name = name; + } + + return 0; +} + #ifdef CONFIG_DEBUG_FS extern struct dentry *snd_soc_debugfs_root; #endif