shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-05 10:31:46 +09:00
Code Issues Packages Projects Releases Wiki Activity

drm/bridge: analogix_dp: support for switching the eDP/DP mode

Browse Source 
Since the Analogix IP can support both eDP v1.3 and DP v1.2, it is
sensible to first check whether the last bridge is connected to a
panel in order to determine and pass on the eDP/DP submodes to the
PHY, which can help separate the eDP/DP configurations in the PHY
driver.

Change-Id: I86e1c52e15f9348ff9524caaa159f92e5c6fc5de
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
This commit is contained in:
Damon Ding
2025-02-06 16:07:00 +08:00
committed by Tao Huang
parent e802519120
commit 93581efcee
5 changed files with 21 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
View File

@@ -27,6 +27,7 @@
#include <drm/drm_crtc.h>
#include <drm/drm_device.h>
#include <drm/drm_edid.h>
#include <drm/drm_of.h>
#include <drm/drm_panel.h>
#include <drm/drm_print.h>
#include <drm/drm_probe_helper.h>
@@ -1685,6 +1686,8 @@ static int analogix_dp_bridge_attach(struct drm_bridge *bridge,
struct analogix_dp_device *dp = bridge->driver_private;
struct drm_encoder *encoder = dp->encoder;
struct drm_connector *connector = NULL;
struct drm_bridge *last_bridge;
struct drm_panel *panel = NULL;
int ret = 0;
if (!bridge->encoder) {
@@ -1692,6 +1695,9 @@ static int analogix_dp_bridge_attach(struct drm_bridge *bridge,
return -ENODEV;
}
if (!dp->plat_data->panel)
dp->dp_mode = true;
if (dp->plat_data->bridge) {
ret = drm_bridge_attach(bridge->encoder, dp->plat_data->bridge, bridge,
dp->plat_data->skip_connector ?
@@ -1700,6 +1706,12 @@ static int analogix_dp_bridge_attach(struct drm_bridge *bridge,
DRM_ERROR("Failed to attach external bridge: %d\n", ret);
return ret;
}
last_bridge = list_last_entry(&bridge->encoder->bridge_chain,
struct drm_bridge, chain_node);
ret = drm_of_find_panel_or_bridge(last_bridge->of_node, 1, -1, &panel, NULL);
if (!ret && panel)
dp->dp_mode = false;
}
if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)

2
drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
View File

@@ -209,6 +209,8 @@ struct analogix_dp_device {
u32 split_area;
const struct analogix_dp_output_format *output_fmt;
bool dp_mode;
};
/* analogix_dp_reg.c */

6
drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
View File

@@ -1103,9 +1103,13 @@ int analogix_dp_send_psr_spd(struct analogix_dp_device *dp,
int analogix_dp_phy_power_on(struct analogix_dp_device *dp)
{
int submode = PHY_SUBMODE_EDP;
int ret;
ret = phy_set_mode(dp->phy, PHY_MODE_DP);
if (dp->plat_data->support_dp_mode && dp->dp_mode)
submode = PHY_SUBMODE_DP;
ret = phy_set_mode_ext(dp->phy, PHY_MODE_DP, submode);
if (ret) {
dev_err(dp->dev, "phy_set_mode failed: %d\n", ret);
return ret;

1
drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
View File

@@ -748,6 +748,7 @@ static int rockchip_dp_probe(struct platform_device *pdev)
dp->adp = ERR_PTR(-ENODEV);
dp->data = &dp_data[id];
dp->plat_data.ssc = dp->data->ssc;
dp->plat_data.support_dp_mode = dp->data->support_dp_mode;
dp->plat_data.max_bpc = dp->data->max_bpc ? dp->data->max_bpc : 8;
dp->plat_data.panel = panel;
dp->plat_data.dev_type = dp->data->chip_type;

1
include/drm/bridge/analogix_dp.h
View File

@@ -43,6 +43,7 @@ struct analogix_dp_plat_data {
struct drm_connector *connector;
bool skip_connector;
bool ssc;
bool support_dp_mode;
bool split_mode;
bool dual_channel_mode;