tests/qtest/pca9552-test.c

   1 /*
   2  * QTest testcase for the PCA9552 LED blinker
   3  *
   4  * Copyright (c) 2017-2018, IBM Corporation.
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7  * See the COPYING file in the top-level directory.
   8  */
   9
  10 #include "qemu/osdep.h"
  11
  12 #include "libqtest.h"
  13 #include "libqos/qgraph.h"
  14 #include "libqos/i2c.h"
  15 #include "hw/gpio/pca9552_regs.h"
  16
  17 #define PCA9552_TEST_ID   "pca9552-test"
  18 #define PCA9552_TEST_ADDR 0x60
  19
  20 static void pca9552_init(QI2CDevice *i2cdev)
  21 {
  22     /* Switch on LEDs 0 and 12 */
  23     i2c_set8(i2cdev, PCA9552_LS0, 0x54);
  24     i2c_set8(i2cdev, PCA9552_LS3, 0x54);
  25 }
  26
  27 static void receive_autoinc(void *obj, void *data, QGuestAllocator *alloc)
  28 {
  29     QI2CDevice *i2cdev = (QI2CDevice *)obj;
  30     uint8_t resp;
  31     uint8_t reg = PCA9552_LS0 | PCA9552_AUTOINC;
  32
  33     pca9552_init(i2cdev);
  34
  35     qi2c_send(i2cdev, &reg, 1);
  36
  37     /* PCA9552_LS0 */
  38     qi2c_recv(i2cdev, &resp, 1);
  39     g_assert_cmphex(resp, ==, 0x54);
  40
  41     /* PCA9552_LS1 */
  42     qi2c_recv(i2cdev, &resp, 1);
  43     g_assert_cmphex(resp, ==, 0x55);
  44
  45     /* PCA9552_LS2 */
  46     qi2c_recv(i2cdev, &resp, 1);
  47     g_assert_cmphex(resp, ==, 0x55);
  48
  49     /* PCA9552_LS3 */
  50     qi2c_recv(i2cdev, &resp, 1);
  51     g_assert_cmphex(resp, ==, 0x54);
  52 }
  53
  54 static void send_and_receive(void *obj, void *data, QGuestAllocator *alloc)
  55 {
  56     QI2CDevice *i2cdev = (QI2CDevice *)obj;
  57     uint8_t value;
  58
  59     value = i2c_get8(i2cdev, PCA9552_LS0);
  60     g_assert_cmphex(value, ==, 0x55);
  61
  62     value = i2c_get8(i2cdev, PCA9552_INPUT0);
  63     g_assert_cmphex(value, ==, 0xFF);
  64
  65     pca9552_init(i2cdev);
  66
  67     value = i2c_get8(i2cdev, PCA9552_LS0);
  68     g_assert_cmphex(value, ==, 0x54);
  69
  70     value = i2c_get8(i2cdev, PCA9552_INPUT0);
  71     g_assert_cmphex(value, ==, 0xFE);
  72
  73     value = i2c_get8(i2cdev, PCA9552_LS3);
  74     g_assert_cmphex(value, ==, 0x54);
  75
  76     value = i2c_get8(i2cdev, PCA9552_INPUT1);
  77     g_assert_cmphex(value, ==, 0xEF);
  78 }
  79
  80 static void pca9552_register_nodes(void)
  81 {
  82     QOSGraphEdgeOptions opts = {
  83         .extra_device_opts = "address=0x60"
  84     };
  85     add_qi2c_address(&opts, &(QI2CAddress) { 0x60 });
  86
  87     qos_node_create_driver("pca9552", i2c_device_create);
  88     qos_node_consumes("pca9552", "i2c-bus", &opts);
  89
  90     qos_add_test("tx-rx", "pca9552", send_and_receive, NULL);
  91     qos_add_test("rx-autoinc", "pca9552", receive_autoinc, NULL);
  92 }
  93 libqos_init(pca9552_register_nodes);