89 lines
2.6 KiB
Diff
89 lines
2.6 KiB
Diff
|
From 38dce459cbbcb98f6e688cfd7815c865c2cd363d Mon Sep 17 00:00:00 2001
|
||
|
|
From: Ondrej Jirman <megi@xff.cz>
|
||
|
|
Date: Mon, 22 Aug 2022 13:34:31 +0200
|
||
|
|
Subject: [PATCH 358/391] drm: rockchip: Don't require MIPI DSI device when
|
||
|
|
it's used for ISP
|
||
|
|
|
||
|
|
On RK3399 one MIPI DSI device can be alternatively used with the ISP1,
|
||
|
|
to provide RX DPHY. When this is the case (ISP1 is enabled in device
|
||
|
|
tree), probe success of DRM is tied to probe success of ISP1 connected
|
||
|
|
camera sensor. This can fail if the user is able to killswitch the camera
|
||
|
|
power, like on Pinephone Pro.
|
||
|
|
|
||
|
|
Detect use of MIPI DSI controller by ISP, and don't include it in
|
||
|
|
component match list in that case.
|
||
|
|
|
||
|
|
Signed-off-by: Ondrej Jirman <megi@xff.cz>
|
||
|
|
---
|
||
|
|
drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 47 +++++++++++++++++++++
|
||
|
|
1 file changed, 47 insertions(+)
|
||
|
|
|
||
|
|
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
|
||
|
|
index e50b90636..a3d8a8b38 100644
|
||
|
|
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
|
||
|
|
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
|
||
|
|
@@ -358,6 +358,43 @@ static void rockchip_drm_match_remove(struct device *dev)
|
||
|
|
device_link_del(link);
|
||
|
|
}
|
||
|
|
|
||
|
|
+/*
|
||
|
|
+ * Check if ISP block linked to a mipi-dsi device via phys phandle is
|
||
|
|
+ * enabled in device tree.
|
||
|
|
+ */
|
||
|
|
+static bool rockchip_drm_is_mipi1_and_used_by_isp(struct device *dev)
|
||
|
|
+{
|
||
|
|
+ struct device_node *np = NULL, *phy_np;
|
||
|
|
+
|
||
|
|
+ if (!of_device_is_compatible(dev->of_node, "rockchip,rk3399-mipi-dsi"))
|
||
|
|
+ return false;
|
||
|
|
+
|
||
|
|
+ while (true) {
|
||
|
|
+ np = of_find_compatible_node(np, NULL, "rockchip,rk3399-cif-isp");
|
||
|
|
+ if (!np)
|
||
|
|
+ break;
|
||
|
|
+
|
||
|
|
+ if (!of_device_is_available(np)) {
|
||
|
|
+ of_node_put(np);
|
||
|
|
+ continue;
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
+ phy_np = of_parse_phandle(np, "phys", 0);
|
||
|
|
+ if (!phy_np) {
|
||
|
|
+ of_node_put(np);
|
||
|
|
+ continue;
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
+ of_node_put(phy_np);
|
||
|
|
+ of_node_put(np);
|
||
|
|
+
|
||
|
|
+ if (phy_np == dev->of_node)
|
||
|
|
+ return true;
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
+ return false;
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
static struct component_match *rockchip_drm_match_add(struct device *dev)
|
||
|
|
{
|
||
|
|
struct component_match *match = NULL;
|
||
|
|
@@ -375,6 +412,16 @@ static struct component_match *rockchip_drm_match_add(struct device *dev)
|
||
|
|
if (!d)
|
||
|
|
break;
|
||
|
|
|
||
|
|
+ /*
|
||
|
|
+ * If mipi1 is connected to ISP, we don't want to wait for mipi1 component,
|
||
|
|
+ * because it will not be used by DRM anyway, to not tie success of camera
|
||
|
|
+ * driver probe to display pipeline initialization.
|
||
|
|
+ */
|
||
|
|
+ if (rockchip_drm_is_mipi1_and_used_by_isp(d)) {
|
||
|
|
+ dev_info(d, "used by ISP1, skipping from DRM\n");
|
||
|
|
+ continue;
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
device_link_add(dev, d, DL_FLAG_STATELESS);
|
||
|
|
component_match_add(dev, &match, component_compare_dev, d);
|
||
|
|
} while (true);
|
||
|
|
--
|
||
|
|
2.35.3
|
||
|
|
|