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authorAwais Belal <awais_belal@mentor.com>2016-10-13 14:39:46 +0500
committerAwais Belal <awais_belal@mentor.com>2016-10-14 15:22:00 +0500
commit912c1466ad973230fcdd08b07f766d291a6c13a4 (patch)
tree3e7a0bdfdf033d61c2212f66c19bf192d41e49b2 /common/recipes-kernel/linux/files/1071-drm-amd-dal-change-default-to-use-SW-i2c.patch
parentb701f13977df4dd34e618e7d074220782b27dd34 (diff)
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SE/BE: move to 4.4 kernel
This commit does a few things which cannot be separated easily so it cannot be split in to separate commits. * Drops all 4.1 kernel bits. * Moves all common patches from meta-amdfalconx86 to common. * Moves SE/BE builds to 4.4 kernel. Signed-off-by: Awais Belal <awais_belal@mentor.com>
Diffstat (limited to 'common/recipes-kernel/linux/files/1071-drm-amd-dal-change-default-to-use-SW-i2c.patch')
-rw-r--r--common/recipes-kernel/linux/files/1071-drm-amd-dal-change-default-to-use-SW-i2c.patch50
1 files changed, 50 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/files/1071-drm-amd-dal-change-default-to-use-SW-i2c.patch b/common/recipes-kernel/linux/files/1071-drm-amd-dal-change-default-to-use-SW-i2c.patch
new file mode 100644
index 00000000..04202d6b
--- /dev/null
+++ b/common/recipes-kernel/linux/files/1071-drm-amd-dal-change-default-to-use-SW-i2c.patch
@@ -0,0 +1,50 @@
+From 53638aa2435972cf5beaa818b623f02de111bd97 Mon Sep 17 00:00:00 2001
+From: Eric Yang <eric.yang2@amd.com>
+Date: Thu, 17 Mar 2016 16:05:47 -0400
+Subject: [PATCH 1071/1110] drm/amd/dal: change default to use SW i2c
+
+Make SW i2c engine the default. However, since all dces except
+dce80 do not create sw i2c engine, they will still use hw i2c.
+This allow enabling/disabling of sw i2c through the feature flag
+FEATURE_RESTORE_USAGE_I2C_SW_ENGINE. DCE80 is the only dce that
+has sw i2c engine enabled right now due to bug in hw i2c. This
+fixes EDID read failure on bonaire. No behaviour change on other
+dces.
+
+Signed-off-by: Eric Yang <eric.yang2@amd.com>
+Reviewed-by: Harry Wentland <harry.wentland@amd.com>
+---
+ drivers/gpu/drm/amd/dal/dc/i2caux/i2caux.c | 9 ++++++++-
+ 1 file changed, 8 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/gpu/drm/amd/dal/dc/i2caux/i2caux.c b/drivers/gpu/drm/amd/dal/dc/i2caux/i2caux.c
+index 2d394cf..a84901e 100644
+--- a/drivers/gpu/drm/amd/dal/dc/i2caux/i2caux.c
++++ b/drivers/gpu/drm/amd/dal/dc/i2caux/i2caux.c
+@@ -122,7 +122,15 @@ bool dal_i2caux_submit_i2c_command(
+ return false;
+ }
+
++ /*
++ * default will be SW, however there is a feature flag in adapter
++ * service that determines whether SW i2c_engine will be available or
++ * not, if sw i2c is not available we will fallback to hw. This feature
++ * flag is set to not creating sw i2c engine for every dce except dce80
++ * currently
++ */
+ switch (cmd->engine) {
++ case I2C_COMMAND_ENGINE_DEFAULT:
+ case I2C_COMMAND_ENGINE_SW:
+ /* try to acquire SW engine first,
+ * acquire HW engine if SW engine not available */
+@@ -133,7 +141,6 @@ bool dal_i2caux_submit_i2c_command(
+ i2caux, ddc);
+ break;
+ case I2C_COMMAND_ENGINE_HW:
+- case I2C_COMMAND_ENGINE_DEFAULT:
+ default:
+ /* try to acquire HW engine first,
+ * acquire SW engine if HW engine not available */
+--
+2.7.4
+