[PATCH 01/14] mfd: arizona: Add jack pointer to struct arizona

[Hans de Goede]

The Linux Arizona driver uses the MFD framework to create several
sub-devices for the Arizona codec and then uses a driver per function.

The jack-detect support for the Arizona codec is handled by the
extcon-arizona driver. This driver exports info about the jack state
to userspace through the standard extcon sysfs class interface.

But standard Linux userspace does not monitor/use the extcon sysfs
interface for jack-detection.

Add a jack pointer to the shared arizona data struct, this allows
the ASoC machine driver to create a snd_soc_jack and then pass this
to the extcon-arizona driver to report jack-detect state, so that
jack-detection works with standard Linux userspace.

The extcon-arizona code already depends on (waits for with -EPROBE_DEFER)
the snd_card being registered by the machine driver, so this does not
cause any ordering issues.

Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
 include/linux/mfd/arizona/core.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/mfd/arizona/core.h b/include/linux/mfd/arizona/core.h
index 6d6f96b2b29f..5eb269bdbfcb 100644
--- a/include/linux/mfd/arizona/core.h
+++ b/include/linux/mfd/arizona/core.h
@@ -115,6 +115,7 @@ enum arizona_type {
 #define ARIZONA_NUM_IRQ                   75
 
 struct snd_soc_dapm_context;
+struct snd_soc_jack;
 
 struct arizona {
 	struct regmap *regmap;
@@ -148,6 +149,7 @@ struct arizona {
 	bool ctrlif_error;
 
 	struct snd_soc_dapm_context *dapm;
+	struct snd_soc_jack *jack;
 
 	int tdm_width[ARIZONA_MAX_AIF];
 	int tdm_slots[ARIZONA_MAX_AIF];
-- 
2.28.0