From fd4eeada42f476ab41543643ef2b145018a5e5f9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=C3=A9a=20Saviot?= <lea.saviot@numworks.com>
Date: Mon, 17 Jun 2019 14:11:13 +0200
Subject: [PATCH] [ion/display] Increase display timings for bad LCD

---
 ion/src/device/shared/drivers/display.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/ion/src/device/shared/drivers/display.cpp b/ion/src/device/shared/drivers/display.cpp
index 5b29805f6..510e29877 100644
--- a/ion/src/device/shared/drivers/display.cpp
+++ b/ion/src/device/shared/drivers/display.cpp
@@ -240,7 +240,16 @@ void shutdownGPIO() {
 }
 
 static inline int nsToCycles(int nanoseconds) {
+  // Fix for bad screens
+#define FIX_BAD_LCD 1
+#if FIX_BAD_LCD
+  constexpr double BaseFrequency = 96.0;
+  double configFrequency = 1.0*Config::HCLKFrequencyInMHz;
+  int baseFrequencyCycles = (nanoseconds*BaseFrequency)/1000 + 1;
+  return baseFrequencyCycles * (configFrequency/BaseFrequency);
+#else
   return (nanoseconds*Config::HCLKFrequencyInMHz)/1000 + 1;
+#endif
 }
 
 void initFSMC() {