The patch
DRM: add help to get ELD speaker allocation
has been applied to the asoc tree at
git://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.
You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying
to this mail.
Thanks,
Mark
>From c82dbe5c055e4d246bd07c4d7b24801c9445c241 Mon Sep 17 00:00:00 2001
From: Arnaud Pouliquen <arnaud.pouliquen@xxxxxx>
Date: Tue, 3 Jan 2017 16:52:50 +0100
Subject: [PATCH] DRM: add help to get ELD speaker allocation
Add helper to allow users to retrieve the speaker allocations without
knowledge of the ELD structure.
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@xxxxxx>
Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
---
include/drm/drm_edid.h | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h
index c3a7d440bc11..de93543d1218 100644
--- a/include/drm/drm_edid.h
+++ b/include/drm/drm_edid.h
@@ -248,6 +248,7 @@ struct detailed_timing {
# define DRM_ELD_AUD_SYNCH_DELAY_MAX 0xfa /* 500 ms */
#define DRM_ELD_SPEAKER 7
+# define DRM_ELD_SPEAKER_MASK 0x7f
# define DRM_ELD_SPEAKER_RLRC (1 << 6)
# define DRM_ELD_SPEAKER_FLRC (1 << 5)
# define DRM_ELD_SPEAKER_RC (1 << 4)
@@ -415,6 +416,18 @@ static inline int drm_eld_size(const uint8_t *eld)
}
/**
+ * drm_eld_get_spk_alloc - Get speaker allocation
+ * @eld: pointer to an ELD memory structure
+ *
+ * The returned value is the speakers mask. User has to use %DRM_ELD_SPEAKER
+ * field definitions to identify speakers.
+ */
+static inline u8 drm_eld_get_spk_alloc(const uint8_t *eld)
+{
+ return eld[DRM_ELD_SPEAKER] & DRM_ELD_SPEAKER_MASK;
+}
+
+/**
* drm_eld_get_conn_type - Get device type hdmi/dp connected
* @eld: pointer to an ELD memory structure
*
--
2.11.0
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