# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1456268273 -3600
# Node ID 9e40bad33af1a381161eb18f11586be0d643c7ac
# Parent  f359a433cb1a3bb191118093f5c11e2b66cf6cf1
Pass parameters to the plot_pattern function.
Removed long-redundant variable declaration.

diff -r f359a433cb1a -r 9e40bad33af1 stage2/irq.c
--- a/stage2/irq.c	Tue Feb 23 23:39:38 2016 +0100
+++ b/stage2/irq.c	Tue Feb 23 23:57:53 2016 +0100
@@ -1,7 +1,7 @@
 /*
  * Interrupt handling.
  *
- * Copyright (C) 2015 Paul Boddie <paul@boddie.org.uk>
+ * Copyright (C) 2015, 2016 Paul Boddie <paul@boddie.org.uk>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -28,33 +28,31 @@
 #include "lcd.h"
 #include "jzlcd.h"
 #include "cpu.h"
+#include "irq.h"
 
 extern vidinfo_t panel_info;
-static unsigned short pixel_type;
-static unsigned short x, y;
-extern unsigned long lastdec;
 
-void next_pixel()
+void next_pixel(unsigned short *x, unsigned short *y)
 {
-	x++;
-	if (x >= panel_info.vl_col) {
-		x = 0;
-		y++;
-		if (y >= panel_info.vl_row)
-			y = 0;
+	(*x)++;
+	if (*x >= panel_info.vl_col) {
+		*x = 0;
+		(*y)++;
+		if (*y >= panel_info.vl_row)
+			*y = 0;
 	}
 }
 
 /* Tasks. */
 
-void plot_pattern()
+void plot_pattern(unsigned short pixel_type, unsigned short x, unsigned short y)
 {
 	while (1) {
 		if (pixel_type)
 			test_pixel(x, y);
 		else
 			clear_pixel(x, y);
-		next_pixel();
+		next_pixel(&x, &y);
 		udelay(100);
 	}
 }
@@ -64,7 +62,6 @@
 void irq_init()
 {
 	timer_init_irq();
-	x = 0; y = 0; pixel_type = 1;
 	handle_error_level();
 	init_interrupts();
 	enable_interrupts();
@@ -80,7 +77,7 @@
 
 		/* Update the pixel type. */
 
-		pixel_type = __gpio_get_pin(GPIO_POWER);
+		/* pixel_type = __gpio_get_pin(GPIO_POWER); */
 
 		/* Clear interrupt status. */
 
@@ -100,7 +97,7 @@
 void start_task()
 {
 	enter_user_mode();
-	plot_pattern();
+	plot_pattern(1, 0, 0);
 }
 
 void tlb_handle()