From: Bjorn Andersson <quic_bjorande@xxxxxxxxxxx>
The "desc" member of struct dp_panel is zero-initialized during
allocation and never assigned, resulting in dp_ctrl_use_fixed_nvid()
never returning true. This returned boolean value is passed around but
never acted upon.
Perform constant propagation and remove the traces of "fixed nvid".
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Signed-off-by: Bjorn Andersson <quic_bjorande@xxxxxxxxxxx>
---
drivers/gpu/drm/msm/dp/dp_catalog.c | 2 +-
drivers/gpu/drm/msm/dp/dp_catalog.h | 2 +-
drivers/gpu/drm/msm/dp/dp_ctrl.c | 17 +----------------
drivers/gpu/drm/msm/dp/dp_panel.h | 1 -
4 files changed, 3 insertions(+), 19 deletions(-)
diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.c b/drivers/gpu/drm/msm/dp/dp_catalog.c
index 3e7c84cdef47..8c72d532d96b 100644
--- a/drivers/gpu/drm/msm/dp/dp_catalog.c
+++ b/drivers/gpu/drm/msm/dp/dp_catalog.c
@@ -469,7 +469,7 @@ void dp_catalog_setup_peripheral_flush(struct dp_catalog *dp_catalog)
void dp_catalog_ctrl_config_msa(struct dp_catalog *dp_catalog,
u32 rate, u32 stream_rate_khz,
- bool fixed_nvid, bool is_ycbcr_420)
+ bool is_ycbcr_420)
{
u32 pixel_m, pixel_n;
u32 mvid, nvid, pixel_div = 0, dispcc_input_rate;
diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.h b/drivers/gpu/drm/msm/dp/dp_catalog.h
index 75ec290127c7..b85ad6bdb2e7 100644
--- a/drivers/gpu/drm/msm/dp/dp_catalog.h
+++ b/drivers/gpu/drm/msm/dp/dp_catalog.h
@@ -99,7 +99,7 @@ void dp_catalog_ctrl_psr_mainlink_enable(struct dp_catalog *dp_catalog, bool ena
void dp_catalog_setup_peripheral_flush(struct dp_catalog *dp_catalog);
void dp_catalog_ctrl_config_misc(struct dp_catalog *dp_catalog, u32 cc, u32 tb);
void dp_catalog_ctrl_config_msa(struct dp_catalog *dp_catalog, u32 rate,
- u32 stream_rate_khz, bool fixed_nvid, bool is_ycbcr_420);
+ u32 stream_rate_khz, bool is_ycbcr_420);
int dp_catalog_ctrl_set_pattern_state_bit(struct dp_catalog *dp_catalog, u32 pattern);
u32 dp_catalog_hw_revision(const struct dp_catalog *dp_catalog);
void dp_catalog_ctrl_reset(struct dp_catalog *dp_catalog);
diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c
index c4dda1faef67..e65a460fb52d 100644
--- a/drivers/gpu/drm/msm/dp/dp_ctrl.c
+++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c
@@ -1566,21 +1566,6 @@ void dp_ctrl_phy_exit(struct dp_ctrl *dp_ctrl)
phy, phy->init_count, phy->power_count);
}
-static bool dp_ctrl_use_fixed_nvid(struct dp_ctrl_private *ctrl)
-{
- const u8 *dpcd = ctrl->panel->dpcd;
-
- /*
- * For better interop experience, used a fixed NVID=0x8000
- * whenever connected to a VGA dongle downstream.
- */
- if (drm_dp_is_branch(dpcd))
- return (drm_dp_has_quirk(&ctrl->panel->desc,
- DP_DPCD_QUIRK_CONSTANT_N));
-
- return false;
-}
-
static int dp_ctrl_reinitialize_mainlink(struct dp_ctrl_private *ctrl)
{
struct phy *phy = ctrl->phy;
@@ -2022,7 +2007,7 @@ int dp_ctrl_on_stream(struct dp_ctrl *dp_ctrl, bool force_link_train)
dp_catalog_ctrl_config_msa(ctrl->catalog,
ctrl->link->link_params.rate,
- pixel_rate_orig, dp_ctrl_use_fixed_nvid(ctrl),
+ pixel_rate_orig,
ctrl->panel->dp_mode.out_fmt_is_yuv_420);
dp_ctrl_setup_tr_unit(ctrl);
diff --git a/drivers/gpu/drm/msm/dp/dp_panel.h b/drivers/gpu/drm/msm/dp/dp_panel.h
index e843f5062d1f..9afd99e00b0c 100644
--- a/drivers/gpu/drm/msm/dp/dp_panel.h
+++ b/drivers/gpu/drm/msm/dp/dp_panel.h
@@ -40,7 +40,6 @@ struct dp_panel {
u8 downstream_ports[DP_MAX_DOWNSTREAM_PORTS];
struct dp_link_info link_info;
- struct drm_dp_desc desc;
struct edid *edid;
struct drm_connector *connector;
struct dp_display_mode dp_mode;
--
2.43.0
