diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0250-bcm2835-add-fallback-channel-layouts-if-channel-map-.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.4/0250-bcm2835-add-fallback-channel-layouts-if-channel-map-.patch | 41 |
1 files changed, 0 insertions, 41 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0250-bcm2835-add-fallback-channel-layouts-if-channel-map-.patch b/target/linux/brcm2708/patches-4.4/0250-bcm2835-add-fallback-channel-layouts-if-channel-map-.patch deleted file mode 100644 index 5a4009da29..0000000000 --- a/target/linux/brcm2708/patches-4.4/0250-bcm2835-add-fallback-channel-layouts-if-channel-map-.patch +++ /dev/null @@ -1,41 +0,0 @@ -From 5710f5696b9db1108e1643a5967a5b576c32b8a0 Mon Sep 17 00:00:00 2001 -From: wm4 <wm4@nowhere> -Date: Tue, 19 Apr 2016 16:29:41 +0200 -Subject: [PATCH] bcm2835: add fallback channel layouts if channel map API is - not used - -Should be more useful than just forcing stereo. - -We can't match the exact legacy ALSA channel layouts, so this is a -"best effort" hack. - -I'm not sure what happens if the application requests channel counts -that are not power-of-2s. The channel map API hopefully forces -applications which use the channel map API to request the correct -count by adding padding channels, but the bare API enforces -nothing. Possibly this could be added to rate_hw_constraint_channels -at a later point. ---- - sound/arm/bcm2835-vchiq.c | 11 ++++++++++- - 1 file changed, 10 insertions(+), 1 deletion(-) - ---- a/sound/arm/bcm2835-vchiq.c -+++ b/sound/arm/bcm2835-vchiq.c -@@ -598,7 +598,16 @@ int bcm2835_audio_set_params(bcm2835_als - if (alsa_stream->chip->cea_chmap >= 0) { - chmap_value = (unsigned)alsa_stream->chip->cea_chmap << 24; - } else { -- chmap_value = 0; /* force stereo */ -+ /* fallback layouts for applications which do not use chmap API */ -+ chmap_value = 0x00; -+ switch (channels) { -+ case 3: chmap_value = 0x01; break; -+ case 4: chmap_value = 0x03; break; -+ case 5: chmap_value = 0x07; break; -+ case 6: chmap_value = 0x0b; break; -+ case 7: chmap_value = 0x0f; break; -+ case 8: chmap_value = 0x13; break; -+ } - for (i = 0; i < 8; i++) - alsa_stream->chip->map_channels[i] = i; - } |