[PATCH 3/3] Add a unit test for RX8900 RTC (time functionality only)

[alastair at au1.ibm.com]

From: Alastair D'Silva <alastair at d-silva.org>

Signed-off-by: Alastair D'Silva <alastair at d-silva.org>
---
 hw/arm/imx25_pdk.c     |  9 +++---
 tests/Makefile.include |  2 ++
 tests/rx8900-test.c    | 82 ++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 89 insertions(+), 4 deletions(-)
 create mode 100644 tests/rx8900-test.c

diff --git a/hw/arm/imx25_pdk.c b/hw/arm/imx25_pdk.c
index 025b608..99a819f 100644
--- a/hw/arm/imx25_pdk.c
+++ b/hw/arm/imx25_pdk.c
@@ -134,13 +134,14 @@ static void imx25_pdk_init(MachineState *machine)
         arm_load_kernel(&s->soc.cpu, &imx25_pdk_binfo);
     } else {
         /*
-         * This I2C device doesn't exist on the real board.
+         * These I2C devices doesn't exist on the real board.
          * We add it here (only on qtest usage) to be able to do a bit
          * of simple qtest. See "make check" for details.
          */
-        i2c_create_slave((I2CBus *)qdev_get_child_bus(DEVICE(&s->soc.i2c[0]),
-                                                      "i2c"),
-                         "ds1338", 0x68);
+        I2CBus *i2c = (I2CBus *)qdev_get_child_bus(DEVICE(&s->soc.i2c[0]),
+                "i2c");
+        i2c_create_slave(i2c, "ds1338", 0x68);
+        i2c_create_slave(i2c, "rx8900", 0x32);
     }
 }
 
diff --git a/tests/Makefile.include b/tests/Makefile.include
index cbe38ad..3f08ba9 100644
--- a/tests/Makefile.include
+++ b/tests/Makefile.include
@@ -297,6 +297,7 @@ check-qtest-sparc64-y = tests/endianness-test$(EXESUF)
 
 check-qtest-arm-y = tests/tmp105-test$(EXESUF)
 check-qtest-arm-y += tests/ds1338-test$(EXESUF)
+check-qtest-arm-y += tests/rx8900-test$(EXESUF)
 check-qtest-arm-y += tests/m25p80-test$(EXESUF)
 gcov-files-arm-y += hw/misc/tmp105.c
 check-qtest-arm-y += tests/virtio-blk-test$(EXESUF)
@@ -629,6 +630,7 @@ tests/bios-tables-test$(EXESUF): tests/bios-tables-test.o \
 tests/pxe-test$(EXESUF): tests/pxe-test.o tests/boot-sector.o $(libqos-obj-y)
 tests/tmp105-test$(EXESUF): tests/tmp105-test.o $(libqos-omap-obj-y)
 tests/ds1338-test$(EXESUF): tests/ds1338-test.o $(libqos-imx-obj-y)
+tests/rx8900-test$(EXESUF): tests/rx8900-test.o $(libqos-imx-obj-y)
 tests/m25p80-test$(EXESUF): tests/m25p80-test.o
 tests/i440fx-test$(EXESUF): tests/i440fx-test.o $(libqos-pc-obj-y)
 tests/q35-test$(EXESUF): tests/q35-test.o $(libqos-pc-obj-y)
diff --git a/tests/rx8900-test.c b/tests/rx8900-test.c
new file mode 100644
index 0000000..8d3ecd8
--- /dev/null
+++ b/tests/rx8900-test.c
@@ -0,0 +1,82 @@
+/*
+ * 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"
+
+#define IMX25_I2C_0_BASE 0x43F80000
+
+#define RX8900_ADDR 0x32
+
+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;
+
+    /* reset the index in the RTC memory */
+    cmd[0] = 0;
+    i2c_send(i2c, addr, cmd, 1);
+
+    tm_ptr = gmtime(&now);
+    /* retrieve the date */
+    i2c_recv(i2c, addr, resp, 7);
+
+    /* check retrieved time against local time */
+    g_assert_cmpuint(bcd2bin(resp[0]), == , tm_ptr->tm_sec);
+    g_assert_cmpuint(bcd2bin(resp[1]), == , tm_ptr->tm_min);
+    g_assert_cmpuint(bcd2bin(resp[2]), == , tm_ptr->tm_hour);
+    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);
+
+    /* Address must match RX8900_ADDR */
+    s = qtest_start("-display none -machine imx25-pdk");
+    i2c = imx_i2c_create(IMX25_I2C_0_BASE);
+    addr = RX8900_ADDR;
+
+    qtest_add_func("/rx8900/tx-rx", send_and_receive);
+
+    ret = g_test_run();
+
+    if (s) {
+        qtest_quit(s);
+    }
+    g_free(i2c);
+
+    return ret;
+}
-- 
2.7.4