@@ -356,12 +356,6 @@ static int dp_display_process_hpd_high(struct dp_display_private *dp)
int rc = 0;
struct edid *edid;
- dp->panel->max_dp_lanes = dp->parser->max_dp_lanes;
- dp->panel->max_dp_link_rate = dp->parser->max_dp_link_rate;
-
- drm_dbg_dp(dp->drm_dev, "max_lanes=%d max_link_rate=%d\n",
- dp->panel->max_dp_lanes, dp->panel->max_dp_link_rate);
-
rc = dp_panel_read_sink_caps(dp->panel, dp->dp_display.connector);
if (rc)
goto end;
@@ -381,8 +375,6 @@ static int dp_display_process_hpd_high(struct dp_display_private *dp)
dp->audio_supported = drm_detect_monitor_audio(edid);
dp_panel_handle_sink_request(dp->panel);
- dp->dp_display.max_dp_lanes = dp->parser->max_dp_lanes;
-
/*
* set sink to normal operation mode -- D0
* before dpcd read
@@ -28,7 +28,6 @@ struct msm_dp {
bool wide_bus_en;
- u32 max_dp_lanes;
struct dp_audio *dp_audio;
bool psr_supported;
};
@@ -7,8 +7,12 @@
#include <drm/drm_connector.h>
#include <drm/drm_edid.h>
+#include <drm/drm_of.h>
#include <drm/drm_print.h>
+#define DP_MAX_NUM_DP_LANES 4
+#define DP_LINK_RATE_HBR2 540000 /* kbytes */
+
struct dp_panel_private {
struct device *dev;
struct drm_device *drm_dev;
@@ -138,6 +142,9 @@ int dp_panel_read_sink_caps(struct dp_panel *dp_panel,
panel = container_of(dp_panel, struct dp_panel_private, dp_panel);
+ drm_dbg_dp(panel->drm_dev, "max_lanes=%d max_link_rate=%d\n",
+ dp_panel->max_dp_lanes, dp_panel->max_dp_link_rate);
+
rc = dp_panel_read_dpcd(dp_panel);
if (rc) {
DRM_ERROR("read dpcd failed %d\n", rc);
@@ -386,10 +393,65 @@ int dp_panel_init_panel_info(struct dp_panel *dp_panel)
return 0;
}
+static u32 dp_panel_link_frequencies(struct device_node *of_node)
+{
+ struct device_node *endpoint;
+ u64 frequency = 0;
+ int cnt;
+
+ endpoint = of_graph_get_endpoint_by_regs(of_node, 1, 0); /* port@1 */
+ if (!endpoint)
+ return 0;
+
+ cnt = of_property_count_u64_elems(endpoint, "link-frequencies");
+
+ if (cnt > 0)
+ of_property_read_u64_index(endpoint, "link-frequencies",
+ cnt - 1, &frequency);
+ of_node_put(endpoint);
+
+ do_div(frequency,
+ 10 * /* from symbol rate to link rate */
+ 1000); /* kbytes */
+
+ return frequency;
+}
+
+static int dp_panel_parse_dt(struct dp_panel *dp_panel)
+{
+ struct dp_panel_private *panel;
+ struct device_node *of_node;
+ int cnt;
+
+ panel = container_of(dp_panel, struct dp_panel_private, dp_panel);
+ of_node = panel->dev->of_node;
+
+ /*
+ * data-lanes is the property of dp_out endpoint
+ */
+ cnt = drm_of_get_data_lanes_count_ep(of_node, 1, 0, 1, DP_MAX_NUM_DP_LANES);
+ if (cnt < 0) {
+ /* legacy code, data-lanes is the property of mdss_dp node */
+ cnt = drm_of_get_data_lanes_count(of_node, 1, DP_MAX_NUM_DP_LANES);
+ }
+
+ if (cnt > 0)
+ dp_panel->max_dp_lanes = cnt;
+ else
+ dp_panel->max_dp_lanes = DP_MAX_NUM_DP_LANES; /* 4 lanes */
+
+ dp_panel->max_dp_link_rate = dp_panel_link_frequencies(of_node);
+ if (!dp_panel->max_dp_link_rate)
+ dp_panel->max_dp_link_rate = DP_LINK_RATE_HBR2;
+
+ return 0;
+}
+
struct dp_panel *dp_panel_get(struct dp_panel_in *in)
{
struct dp_panel_private *panel;
struct dp_panel *dp_panel;
+ int ret;
if (!in->dev || !in->catalog || !in->aux || !in->link) {
DRM_ERROR("invalid input\n");
@@ -408,6 +470,10 @@ struct dp_panel *dp_panel_get(struct dp_panel_in *in)
dp_panel = &panel->dp_panel;
dp_panel->max_bw_code = DP_LINK_BW_8_1;
+ ret = dp_panel_parse_dt(dp_panel);
+ if (ret)
+ return ERR_PTR(ret);
+
return dp_panel;
}
@@ -24,56 +24,6 @@ static int dp_parser_ctrl_res(struct dp_parser *parser)
return 0;
}
-static u32 dp_parser_link_frequencies(struct device_node *of_node)
-{
- struct device_node *endpoint;
- u64 frequency = 0;
- int cnt;
-
- endpoint = of_graph_get_endpoint_by_regs(of_node, 1, 0); /* port@1 */
- if (!endpoint)
- return 0;
-
- cnt = of_property_count_u64_elems(endpoint, "link-frequencies");
-
- if (cnt > 0)
- of_property_read_u64_index(endpoint, "link-frequencies",
- cnt - 1, &frequency);
- of_node_put(endpoint);
-
- do_div(frequency,
- 10 * /* from symbol rate to link rate */
- 1000); /* kbytes */
-
- return frequency;
-}
-
-static int dp_parser_misc(struct dp_parser *parser)
-{
- struct device_node *of_node = parser->pdev->dev.of_node;
- int cnt;
-
- /*
- * data-lanes is the property of dp_out endpoint
- */
- cnt = drm_of_get_data_lanes_count_ep(of_node, 1, 0, 1, DP_MAX_NUM_DP_LANES);
- if (cnt < 0) {
- /* legacy code, data-lanes is the property of mdss_dp node */
- cnt = drm_of_get_data_lanes_count(of_node, 1, DP_MAX_NUM_DP_LANES);
- }
-
- if (cnt > 0)
- parser->max_dp_lanes = cnt;
- else
- parser->max_dp_lanes = DP_MAX_NUM_DP_LANES; /* 4 lanes */
-
- parser->max_dp_link_rate = dp_parser_link_frequencies(of_node);
- if (!parser->max_dp_link_rate)
- parser->max_dp_link_rate = DP_LINK_RATE_HBR2;
-
- return 0;
-}
-
int devm_dp_parser_find_next_bridge(struct device *dev, struct dp_parser *parser)
{
struct platform_device *pdev = parser->pdev;
@@ -101,10 +51,6 @@ static int dp_parser_parse(struct dp_parser *parser)
if (rc)
return rc;
- rc = dp_parser_misc(parser);
- if (rc)
- return rc;
-
return 0;
}
@@ -11,8 +11,6 @@
#include "msm_drv.h"
#define DP_MAX_PIXEL_CLK_KHZ 675000
-#define DP_MAX_NUM_DP_LANES 4
-#define DP_LINK_RATE_HBR2 540000 /* kbytes */
/**
* struct dp_parser - DP parser's data exposed to clients
@@ -24,8 +22,6 @@
struct dp_parser {
struct platform_device *pdev;
struct phy *phy;
- u32 max_dp_lanes;
- u32 max_dp_link_rate;
struct drm_bridge *next_bridge;
};
Instead of passing link properties through the separate struct, parse them directly in the dp_panel. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> --- drivers/gpu/drm/msm/dp/dp_display.c | 8 ----- drivers/gpu/drm/msm/dp/dp_display.h | 1 - drivers/gpu/drm/msm/dp/dp_panel.c | 66 +++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/msm/dp/dp_parser.c | 54 ------------------------------ drivers/gpu/drm/msm/dp/dp_parser.h | 4 --- 5 files changed, 66 insertions(+), 67 deletions(-)