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 26 static inline uint8_t bcd2bin(uint8_t x) 27 { 28 return ((x) & 0x0f) + ((x) >> 4) * 10; 29 } 30 31 static 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 against 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 47 static 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 } 58 libqos_init(ds1338_register_nodes); 59