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-rw-r--r--qemu/tests/ds1338-test.c79
1 files changed, 79 insertions, 0 deletions
diff --git a/qemu/tests/ds1338-test.c b/qemu/tests/ds1338-test.c
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+++ b/qemu/tests/ds1338-test.c
@@ -0,0 +1,79 @@
+/*
+ * QTest testcase for the DS1338 RTC
+ *
+ * Copyright (c) 2013 Jean-Christophe Dubois
+ *
+ * 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 the
+ * Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "libqtest.h"
+#include "libqos/i2c.h"
+
+#include <glib.h>
+
+#define IMX25_I2C_0_BASE 0x43F80000
+
+#define DS1338_ADDR 0x68
+
+static I2CAdapter *i2c;
+static uint8_t addr;
+
+static inline uint8_t bcd2bin(uint8_t x)
+{
+ return ((x) & 0x0f) + ((x) >> 4) * 10;
+}
+
+static void send_and_receive(void)
+{
+ uint8_t cmd[1];
+ uint8_t resp[7];
+ time_t now = time(NULL);
+ struct tm *tm_ptr = gmtime(&now);
+
+ /* reset the index in the RTC memory */
+ cmd[0] = 0;
+ i2c_send(i2c, addr, cmd, 1);
+
+ /* retrieve the date */
+ i2c_recv(i2c, addr, resp, 7);
+
+ /* check retrieved time againt local time */
+ g_assert_cmpuint(bcd2bin(resp[4]), == , tm_ptr->tm_mday);
+ g_assert_cmpuint(bcd2bin(resp[5]), == , 1 + tm_ptr->tm_mon);
+ g_assert_cmpuint(2000 + bcd2bin(resp[6]), == , 1900 + tm_ptr->tm_year);
+}
+
+int main(int argc, char **argv)
+{
+ QTestState *s = NULL;
+ int ret;
+
+ g_test_init(&argc, &argv, NULL);
+
+ s = qtest_start("-display none -machine imx25-pdk");
+ i2c = imx_i2c_create(IMX25_I2C_0_BASE);
+ addr = DS1338_ADDR;
+
+ qtest_add_func("/ds1338/tx-rx", send_and_receive);
+
+ ret = g_test_run();
+
+ if (s) {
+ qtest_quit(s);
+ }
+ g_free(i2c);
+
+ return ret;
+}