LXR qemu/tests/ds1338-test.c

   1/*
   2 * QTest testcase for the DS1338 RTC
   3 *
   4 * Copyright (c) 2013 Jean-Christophe Dubois
   5 *
   6 *  This program is free software; you can redistribute it and/or modify it
   7 *  under the terms of the GNU General Public License as published by the
   8 *  Free Software Foundation; either version 2 of the License, or
   9 *  (at your option) any later version.
  10 *
  11 *  This program is distributed in the hope that it will be useful, but WITHOUT
  12 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 *  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  14 *  for more details.
  15 *
  16 *  You should have received a copy of the GNU General Public License along
  17 *  with this program; if not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20#include "qemu/osdep.h"
  21#include "libqtest.h"
  22#include "libqos/i2c.h"
  23
  24#define DS1338_ADDR 0x68
  25
  26static inline uint8_t bcd2bin(uint8_t x)
  27{
  28    return ((x) & 0x0f) + ((x) >> 4) * 10;
  29}
  30
  31static void send_and_receive(void *obj, void *data, QGuestAllocator *alloc)
  32{
  33    QI2CDevice *i2cdev = (QI2CDevice *)obj;
  34
  35    uint8_t resp[7];
  36    time_t now = time(NULL);
  37    struct tm *tm_ptr = gmtime(&now);
  38
  39    i2c_read_block(i2cdev, 0, resp, sizeof(resp));
  40
  41    /* check retrieved time againt local time */
  42    g_assert_cmpuint(bcd2bin(resp[4]), == , tm_ptr->tm_mday);
  43    g_assert_cmpuint(bcd2bin(resp[5]), == , 1 + tm_ptr->tm_mon);
  44    g_assert_cmpuint(2000 + bcd2bin(resp[6]), == , 1900 + tm_ptr->tm_year);
  45}
  46
  47static void ds1338_register_nodes(void)
  48{
  49    QOSGraphEdgeOptions opts = {
  50        .extra_device_opts = "address=0x68"
  51    };
  52    add_qi2c_address(&opts, &(QI2CAddress) { DS1338_ADDR });
  53
  54    qos_node_create_driver("ds1338", i2c_device_create);
  55    qos_node_consumes("ds1338", "i2c-bus", &opts);
  56    qos_add_test("tx-rx", "ds1338", send_and_receive, NULL);
  57}
  58libqos_init(ds1338_register_nodes);
  59