From 6f057d339567e376b954e41fdced12fa9d09eb7b Mon Sep 17 00:00:00 2001
From: Janne Grunau <j@jannau.net>
Date: Wed, 1 Feb 2023 14:45:03 +0100
Subject: [PATCH] proxy: hv: Add trace_dptx.py for tracing dptx-phy on
 j473/t8112

Signed-off-by: Janne Grunau <j@jannau.net>
---
 proxyclient/hv/trace_dptx.py | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 proxyclient/hv/trace_dptx.py

diff --git a/proxyclient/hv/trace_dptx.py b/proxyclient/hv/trace_dptx.py
new file mode 100644
index 00000000..ddf12262
--- /dev/null
+++ b/proxyclient/hv/trace_dptx.py
@@ -0,0 +1,24 @@
+# SPDX-License-Identifier: MIT
+
+from m1n1.trace.gpio import GPIOTracer
+
+# trace gpio interrups, useful to follow the cascaded interrupts
+aic_phandle = getattr(hv.adt["/arm-io/aic"], "AAPL,phandle")
+node = hv.adt["/arm-io/aop-gpio"]
+path = "/arm-io/aop-gpio"
+
+if getattr(node, "interrupt-parent") == aic_phandle:
+    for irq in getattr(node, "interrupts"):
+        hv.trace_irq(node.name, irq, 1, hv.IRQTRACE_IRQ)
+
+PIN_NAMES_DP2HDMI_J473 = {
+    0x28: "force_dfp",
+    0x31: "hdmi_hpd",
+}
+
+GPIOTracer = GPIOTracer._reloadcls()
+gpio_tracer = GPIOTracer(hv, path, PIN_NAMES_DP2HDMI_J473, verbose=0)
+gpio_tracer.start()
+
+trace_device("/arm-io/dptx-phy")
+