test/dm/serial.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2018, STMicroelectronics
   4  */
   5
   6 #include <log.h>
   7 #include <serial.h>
   8 #include <dm.h>
   9 #include <asm/serial.h>
  10 #include <dm/test.h>
  11 #include <test/test.h>
  12 #include <test/ut.h>
  13
  14 static const char test_message[] =
  15         "This is a test message\n"
  16         "consisting of multiple lines\n";
  17
  18 static int dm_test_serial(struct unit_test_state *uts)
  19 {
  20         int i;
  21         struct serial_device_info info_serial = {0};
  22         struct udevice *dev_serial;
  23         size_t start, putc_written;
  24
  25         uint value_serial;
  26
  27         ut_assertok(uclass_get_device_by_name(UCLASS_SERIAL, "serial",
  28                                               &dev_serial));
  29
  30         ut_assertok(serial_tstc());
  31         ut_asserteq(115200, fetch_baud_from_dtb());
  32         /*
  33          * test with default config which is the only one supported by
  34          * sandbox_serial driver
  35          */
  36         ut_assertok(serial_setconfig(dev_serial, SERIAL_DEFAULT_CONFIG));
  37         ut_assertok(serial_getconfig(dev_serial, &value_serial));
  38         ut_assert(value_serial == SERIAL_DEFAULT_CONFIG);
  39         ut_assertok(serial_getinfo(dev_serial, &info_serial));
  40         ut_assert(info_serial.type == SERIAL_CHIP_UNKNOWN);
  41         ut_assert(info_serial.addr == SERIAL_DEFAULT_ADDRESS);
  42         ut_assert(info_serial.clock == SERIAL_DEFAULT_CLOCK);
  43         /*
  44          * test with a parameter which is NULL pointer
  45          */
  46         ut_asserteq(-EINVAL, serial_getconfig(dev_serial, NULL));
  47         ut_asserteq(-EINVAL, serial_getinfo(dev_serial, NULL));
  48         /*
  49          * test with a serial config which is not supported by
  50          * sandbox_serial driver: test with wrong parity
  51          */
  52         ut_asserteq(-ENOTSUPP,
  53                     serial_setconfig(dev_serial,
  54                                      SERIAL_CONFIG(SERIAL_PAR_ODD,
  55                                                    SERIAL_8_BITS,
  56                                                    SERIAL_ONE_STOP)));
  57         /*
  58          * test with a serial config which is not supported by
  59          * sandbox_serial driver: test with wrong bits number
  60          */
  61         ut_asserteq(-ENOTSUPP,
  62                     serial_setconfig(dev_serial,
  63                                      SERIAL_CONFIG(SERIAL_PAR_NONE,
  64                                                    SERIAL_6_BITS,
  65                                                    SERIAL_ONE_STOP)));
  66
  67         /*
  68          * test with a serial config which is not supported by
  69          * sandbox_serial driver: test with wrong stop bits number
  70          */
  71         ut_asserteq(-ENOTSUPP,
  72                     serial_setconfig(dev_serial,
  73                                      SERIAL_CONFIG(SERIAL_PAR_NONE,
  74                                                    SERIAL_8_BITS,
  75                                                    SERIAL_TWO_STOP)));
  76
  77         /* Verify that putc and puts print the same number of characters */
  78         sandbox_serial_endisable(false);
  79         start = sandbox_serial_written();
  80         for (i = 0; i < sizeof(test_message) - 1; i++)
  81                 serial_putc(test_message[i]);
  82         putc_written = sandbox_serial_written();
  83         serial_puts(test_message);
  84         sandbox_serial_endisable(true);
  85         ut_asserteq(putc_written - start,
  86                     sandbox_serial_written() - putc_written);
  87
  88         return 0;
  89 }
  90 DM_TEST(dm_test_serial, UTF_SCAN_FDT);