1 files changed, 75 insertions, 0 deletions
diff --git a/meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/0223-drm-amd-display-Add-query_ddc_data-function.patch b/meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/0223-drm-amd-display-Add-query_ddc_data-function.patch
new file mode 100644
index 00000000..8364ebfd
--- /dev/null
+++ b/meta-v1000/recipes-kernel/linux/linux-yocto-4.14.71/0223-drm-amd-display-Add-query_ddc_data-function.patch
@@ -0,0 +1,75 @@
+From e5a175ca146ef849606a2ac804f4e7a25695fd29 Mon Sep 17 00:00:00 2001
+From: Zeyu Fan <Zeyu.Fan@amd.com>
+Date: Thu, 16 Feb 2017 16:15:30 -0500
+Subject: [PATCH 0223/4131] drm/amd/display: Add query_ddc_data function
+
+Signed-off-by: Zeyu Fan <Zeyu.Fan@amd.com>
+Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
+Acked-by: Harry Wentland <Harry.Wentland@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+---
+ drivers/gpu/drm/amd/display/dc/core/dc.c | 25 +++++++++++++++++++++++++
+ drivers/gpu/drm/amd/display/dc/dc.h      | 11 ++++++++++-
+ 2 files changed, 35 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
+index 84412e7..6516c27 100644
+--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
++++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
+@@ -1725,6 +1725,31 @@ bool dc_read_dpcd(
+ 	return r == DDC_RESULT_SUCESSFULL;
+ }
+ 
++bool dc_query_ddc_data(
++		struct dc *dc,
++		uint32_t link_index,
++		uint32_t address,
++		uint8_t *write_buf,
++		uint32_t write_size,
++		uint8_t *read_buf,
++		uint32_t read_size) {
++
++	struct core_dc *core_dc = DC_TO_CORE(dc);
++
++	struct core_link *link = core_dc->links[link_index];
++
++	bool result = dal_ddc_service_query_ddc_data(
++			link->ddc,
++			address,
++			write_buf,
++			write_size,
++			read_buf,
++			read_size);
++
++	return result;
++}
++
++
+ bool dc_write_dpcd(
+ 		struct dc *dc,
+ 		uint32_t link_index,
+diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
+index 71d7dde..2d84b18 100644
+--- a/drivers/gpu/drm/amd/display/dc/dc.h
++++ b/drivers/gpu/drm/amd/display/dc/dc.h
+@@ -720,7 +720,16 @@ bool dc_write_dpcd(
+ 		uint32_t link_index,
+ 		uint32_t address,
+ 		const uint8_t *data,
+-	uint32_t size);
++		uint32_t size);
++
++bool dc_query_ddc_data(
++		struct dc *dc,
++		uint32_t link_index,
++		uint32_t address,
++		uint8_t *write_buf,
++		uint32_t write_size,
++		uint8_t *read_buf,
++		uint32_t read_size);
+ 
+ bool dc_submit_i2c(
+ 		struct dc *dc,
+-- 
+2.7.4
+