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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
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