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 IMX25_I2C_0_BASE 0x43F80000 25 26 #define DS1338_ADDR 0x68 27 28 static I2CAdapter *i2c; 29 static uint8_t addr; 30 31 static inline uint8_t bcd2bin(uint8_t x) 32 { 33 return ((x) & 0x0f) + ((x) >> 4) * 10; 34 } 35 36 static void send_and_receive(void) 37 { 38 uint8_t cmd[1]; 39 uint8_t resp[7]; 40 time_t now = time(NULL); 41 struct tm *tm_ptr = gmtime(&now); 42 43 /* reset the index in the RTC memory */ 44 cmd[0] = 0; 45 i2c_send(i2c, addr, cmd, 1); 46 47 /* retrieve the date */ 48 i2c_recv(i2c, addr, resp, 7); 49 50 /* check retrieved time againt local time */ 51 g_assert_cmpuint(bcd2bin(resp[4]), == , tm_ptr->tm_mday); 52 g_assert_cmpuint(bcd2bin(resp[5]), == , 1 + tm_ptr->tm_mon); 53 g_assert_cmpuint(2000 + bcd2bin(resp[6]), == , 1900 + tm_ptr->tm_year); 54 } 55 56 int main(int argc, char **argv) 57 { 58 QTestState *s = NULL; 59 int ret; 60 61 g_test_init(&argc, &argv, NULL); 62 63 s = qtest_start("-display none -machine imx25-pdk"); 64 i2c = imx_i2c_create(IMX25_I2C_0_BASE); 65 addr = DS1338_ADDR; 66 67 qtest_add_func("/ds1338/tx-rx", send_and_receive); 68 69 ret = g_test_run(); 70 71 if (s) { 72 qtest_quit(s); 73 } 74 g_free(i2c); 75 76 return ret; 77 } 78