mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 15:32:33 +00:00
cddd459140
Add patches for linux-5.4. The patches are from NXP LSDK-20.04 release which was tagged LSDK-20.04-V5.4. https://source.codeaurora.org/external/qoriq/qoriq-components/linux/ For boards LS1021A-IOT, and Traverse-LS1043 which are not involved in LSDK, port the dts patches from 4.14. The patches are sorted into the following categories: 301-arch-xxxx 302-dts-xxxx 303-core-xxxx 701-net-xxxx 801-audio-xxxx 802-can-xxxx 803-clock-xxxx 804-crypto-xxxx 805-display-xxxx 806-dma-xxxx 807-gpio-xxxx 808-i2c-xxxx 809-jailhouse-xxxx 810-keys-xxxx 811-kvm-xxxx 812-pcie-xxxx 813-pm-xxxx 814-qe-xxxx 815-sata-xxxx 816-sdhc-xxxx 817-spi-xxxx 818-thermal-xxxx 819-uart-xxxx 820-usb-xxxx 821-vfio-xxxx Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
108 lines
3.6 KiB
Diff
108 lines
3.6 KiB
Diff
From d13b544c949e85e39f6c1c20485d8f37f5127e59 Mon Sep 17 00:00:00 2001
|
|
From: Sandor Yu <Sandor.yu@nxp.com>
|
|
Date: Fri, 20 Dec 2019 17:31:52 +0800
|
|
Subject: [PATCH] LF-568-2: drm: gpu: bridge: cdns: Add force mode set flag
|
|
|
|
In DRM framework, when hdmi/dp cable plugout/plugin in the same HDMI
|
|
sink, because the video mode is same, DRM will not call mode_set.
|
|
But for HDMI 2.0 sink the SCDC configurate will lost, and DP sink
|
|
linktraning status will lost too after cable plugout then plugin.
|
|
|
|
Currently, hdmi/dp driver will call mode_set function in HPD thread,
|
|
But the mode_set function is called out of DRM framework, and it have
|
|
chance to fail.
|
|
In the patch add force_mode_set flag, set the crtc_state->mode_changed
|
|
to force drm call mode_set when cable plugin.
|
|
|
|
Signed-off-by: Sandor Yu <Sandor.yu@nxp.com>
|
|
---
|
|
drivers/gpu/drm/bridge/cadence/cdns-dp-core.c | 5 +++++
|
|
drivers/gpu/drm/bridge/cadence/cdns-hdmi-core.c | 12 ++++++++----
|
|
drivers/gpu/drm/imx/cdn-mhdp-imxdrv.c | 4 ++++
|
|
include/drm/bridge/cdns-mhdp-common.h | 1 +
|
|
4 files changed, 18 insertions(+), 4 deletions(-)
|
|
|
|
--- a/drivers/gpu/drm/bridge/cadence/cdns-dp-core.c
|
|
+++ b/drivers/gpu/drm/bridge/cadence/cdns-dp-core.c
|
|
@@ -322,6 +322,9 @@ static void cdns_dp_bridge_mode_set(stru
|
|
mutex_lock(&mhdp->lock);
|
|
cdns_dp_mode_set(mhdp);
|
|
mutex_unlock(&mhdp->lock);
|
|
+
|
|
+ /* reset force mode set flag */
|
|
+ mhdp->force_mode_set = false;
|
|
}
|
|
|
|
static void cdn_dp_bridge_enable(struct drm_bridge *bridge)
|
|
@@ -375,6 +378,8 @@ static void hotplug_work_func(struct wor
|
|
} else if (connector->status == connector_status_disconnected) {
|
|
/* Cable Disconnedted */
|
|
DRM_INFO("HDMI/DP Cable Plug Out\n");
|
|
+ /* force mode set for cable replugin to recovery DP video modes */
|
|
+ mhdp->force_mode_set = true;
|
|
enable_irq(mhdp->irq[IRQ_IN]);
|
|
}
|
|
}
|
|
--- a/drivers/gpu/drm/bridge/cadence/cdns-hdmi-core.c
|
|
+++ b/drivers/gpu/drm/bridge/cadence/cdns-hdmi-core.c
|
|
@@ -178,6 +178,10 @@ void cdns_hdmi_mode_set(struct cdns_mhdp
|
|
struct drm_display_mode *mode = &mhdp->mode;
|
|
int ret;
|
|
|
|
+ /* video mode valid check */
|
|
+ if (mode->clock == 0 || mode->hdisplay == 0 || mode->vdisplay == 0)
|
|
+ return;
|
|
+
|
|
hdmi_lanes_config(mhdp);
|
|
|
|
cdns_mhdp_plat_call(mhdp, pclk_rate);
|
|
@@ -393,6 +397,8 @@ static void cdns_hdmi_bridge_mode_set(st
|
|
mutex_lock(&mhdp->lock);
|
|
cdns_hdmi_mode_set(mhdp);
|
|
mutex_unlock(&mhdp->lock);
|
|
+ /* reset force mode set flag */
|
|
+ mhdp->force_mode_set = false;
|
|
}
|
|
|
|
bool cdns_hdmi_bridge_mode_fixup(struct drm_bridge *bridge,
|
|
@@ -467,14 +473,12 @@ static void hotplug_work_func(struct wor
|
|
|
|
if (connector->status == connector_status_connected) {
|
|
DRM_INFO("HDMI Cable Plug In\n");
|
|
- /* reset video mode after cable plugin */
|
|
- mutex_lock(&mhdp->lock);
|
|
- cdns_hdmi_mode_set(mhdp);
|
|
- mutex_unlock(&mhdp->lock);
|
|
enable_irq(mhdp->irq[IRQ_OUT]);
|
|
} else if (connector->status == connector_status_disconnected) {
|
|
/* Cable Disconnedted */
|
|
DRM_INFO("HDMI Cable Plug Out\n");
|
|
+ /* force mode set for cable replugin to recovery HDMI2.0 video modes */
|
|
+ mhdp->force_mode_set = true;
|
|
enable_irq(mhdp->irq[IRQ_IN]);
|
|
}
|
|
}
|
|
--- a/drivers/gpu/drm/imx/cdn-mhdp-imxdrv.c
|
|
+++ b/drivers/gpu/drm/imx/cdn-mhdp-imxdrv.c
|
|
@@ -40,6 +40,10 @@ static int cdns_mhdp_imx_encoder_atomic_
|
|
|
|
if (mhdp->plat_data->video_format != 0)
|
|
imx_crtc_state->bus_format = mhdp->plat_data->video_format;
|
|
+
|
|
+ if (mhdp->force_mode_set)
|
|
+ crtc_state->mode_changed = true;
|
|
+
|
|
return 0;
|
|
}
|
|
|
|
--- a/include/drm/bridge/cdns-mhdp-common.h
|
|
+++ b/include/drm/bridge/cdns-mhdp-common.h
|
|
@@ -684,6 +684,7 @@ struct cdns_mhdp_device {
|
|
bool link_up;
|
|
bool power_up;
|
|
bool plugged;
|
|
+ bool force_mode_set;
|
|
bool is_hpd;
|
|
bool is_ls1028a;
|
|
struct mutex lock;
|