dsi: anx: fix debug macros and M4 functionality

Author: facchinm

libraries/Arduino_H7_Video/src/H7DisplayShield.cpp

@@ -22,6 +22,8 @@ int USBCVideoClass::init(int edidmode) {
     struct edid recognized_edid;
     int err_code = 0;
 
+    memset(&recognized_edid, 0, sizeof(recognized_edid));
+
     //Initialization of ANX7625
     err_code = anx7625_init(0);
     if(err_code < 0) {

libraries/Arduino_H7_Video/src/anx7625.cpp

@@ -25,7 +25,7 @@
 #include <drivers/DigitalInOut.h>
 #include <drivers/I2C.h>
 
-#if defined(ARDUINO_PORTENTA_H7_M7)
+#if defined(ARDUINO_PORTENTA_H7_M7) || defined(PORTENTA_H7_PINS)
 
 #include "dsi.h"
 #include "anx7625.h"
@@ -42,9 +42,12 @@
 	#define ANXDEBUG(format, ...) \
 			printk(BIOS_DEBUG, "%s: " format, __func__, ##__VA_ARGS__)
 #else
-	#define ANXERROR(format, ...) 
-	#define ANXINFO(format, ...)
-	#define ANXDEBUG(format, ...)
+	#define ANXERROR(format, ...) \
+		do { static volatile int _i = 5; _i++; } while (0)
+	#define ANXINFO(format, ...) \
+		do { } while (0)
+	#define ANXDEBUG(format, ...) \
+		do { } while (0)
 #endif
 
 #define FLASH_LOAD_STA 0x05
@@ -506,7 +509,7 @@ int anx7625_init(uint8_t bus) {
 		return -1;
 	}
 	ANXINFO("Powering on anx7625 successfull.\n");
-	mdelay(200); // Wait for anx7625 to be stable
+	mdelay(500); // Wait for anx7625 to be stable
 
 	if(anx7625_is_power_provider(0)) {
 		ANXINFO("OTG_ON = 0 -> VBUS ON\n");

libraries/Arduino_H7_Video/src/edid.c

@@ -47,9 +47,12 @@
 	#define EDIDDEBUG(format, ...) \
 			printk(BIOS_SPEW, "%s: " format, __func__, ##__VA_ARGS__)
 #else
-	#define EDIDERROR(format, ...) 
-	#define EDIDWARNING(format, ...)
-	#define EDIDDEBUG(format, ...)
+	#define EDIDERROR(format ...) \
+		do { } while (0)
+	#define EDIDWARNING(format ...) \
+		do { } while (0)
+	#define EDIDDEBUG(format ...) \
+		do { } while (0)
 #endif
 
 struct edid_context {
@@ -1034,7 +1037,7 @@ parse_extension(struct edid *out, unsigned char *x, struct edid_context *c)
 }
 
 static const struct {
-	int x, y, refresh;
+	unsigned int x, y, refresh;
 } established_timings[] = {
 	/* 0x23 bit 7 - 0 */
 	{720, 400, 70},