From 2151374fa6556ec1027d1d0003b1e238a106cc63 Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Tue, 10 May 2011 16:22:25 -0400
Subject: Blackfin: post: generalize led/button tests with GPIOs

Make it easy for any Blackfin board to enable led/push button tests.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---
 arch/blackfin/lib/post.c | 85 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 arch/blackfin/lib/post.c

(limited to 'arch/blackfin/lib/post.c')

diff --git a/arch/blackfin/lib/post.c b/arch/blackfin/lib/post.c
new file mode 100644
index 0000000000..b3c5fab576
--- /dev/null
+++ b/arch/blackfin/lib/post.c
@@ -0,0 +1,85 @@
+/*
+ * Blackfin POST code
+ *
+ * Copyright (c) 2005-2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <common.h>
+#include <config.h>
+#include <post.h>
+
+#include <asm/gpio.h>
+
+#if CONFIG_POST & CONFIG_SYS_POST_BSPEC1
+int led_post_test(int flags)
+{
+	unsigned leds[] = { CONFIG_POST_BSPEC1_GPIO_LEDS };
+	int i;
+
+	/* First turn them all off */
+	for (i = 0; i < ARRAY_SIZE(leds); ++i) {
+		if (gpio_request(leds[i], "post")) {
+			printf("could not request gpio %u\n", leds[i]);
+			continue;
+		}
+		gpio_direction_output(leds[i], 0);
+	}
+
+	/* Now turn them on one by one */
+	for (i = 0; i < ARRAY_SIZE(leds); ++i) {
+		printf("LED%i on", i + 1);
+		gpio_set_value(leds[i], 1);
+		udelay(1000000);
+		printf("\b\b\b\b\b\b\b");
+		gpio_free(leds[i]);
+	}
+
+	return 0;
+}
+#endif
+
+#if CONFIG_POST & CONFIG_SYS_POST_BSPEC2
+int button_post_test(int flags)
+{
+	unsigned buttons[] = { CONFIG_POST_BSPEC2_GPIO_BUTTONS };
+	unsigned int sws[] = { CONFIG_POST_BSPEC2_GPIO_NAMES };
+	int i, delay = 5;
+	unsigned short value = 0;
+	int result = 0;
+
+	for (i = 0; i < ARRAY_SIZE(buttons); ++i) {
+		if (gpio_request(buttons[i], "post")) {
+			printf("could not request gpio %u\n", buttons[i]);
+			continue;
+		}
+		gpio_direction_input(buttons[i]);
+
+		delay = 5;
+		printf("\n--------Press SW%i: %2d ", sws[i], delay);
+		while (delay--) {
+			int j;
+			for (j = 0; j < 100; j++) {
+				value = gpio_get_value(buttons[i]);
+				if (value != 0)
+					break;
+				udelay(10000);
+			}
+			printf("\b\b\b%2d ", delay);
+		}
+		if (value != 0)
+			puts("\b\bOK");
+		else {
+			result = -1;
+			puts("\b\bfailed");
+		}
+
+		gpio_free(buttons[i]);
+	}
+
+	puts("\n");
+
+	return result;
+}
+#endif
-- 
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