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94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
/*
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* QTest testcase for the PCA9552 LED blinker
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*
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* Copyright (c) 2017-2018, IBM Corporation.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "libqtest.h"
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#include "libqos/qgraph.h"
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#include "libqos/i2c.h"
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#include "hw/gpio/pca9552_regs.h"
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#define PCA9552_TEST_ID "pca9552-test"
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#define PCA9552_TEST_ADDR 0x60
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static void pca9552_init(QI2CDevice *i2cdev)
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{
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/* Switch on LEDs 0 and 12 */
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i2c_set8(i2cdev, PCA9552_LS0, 0x54);
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i2c_set8(i2cdev, PCA9552_LS3, 0x54);
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}
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static void receive_autoinc(void *obj, void *data, QGuestAllocator *alloc)
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{
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QI2CDevice *i2cdev = (QI2CDevice *)obj;
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uint8_t resp;
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uint8_t reg = PCA9552_LS0 | PCA9552_AUTOINC;
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pca9552_init(i2cdev);
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qi2c_send(i2cdev, ®, 1);
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/* PCA9552_LS0 */
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qi2c_recv(i2cdev, &resp, 1);
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g_assert_cmphex(resp, ==, 0x54);
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/* PCA9552_LS1 */
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qi2c_recv(i2cdev, &resp, 1);
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g_assert_cmphex(resp, ==, 0x55);
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/* PCA9552_LS2 */
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qi2c_recv(i2cdev, &resp, 1);
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g_assert_cmphex(resp, ==, 0x55);
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/* PCA9552_LS3 */
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qi2c_recv(i2cdev, &resp, 1);
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g_assert_cmphex(resp, ==, 0x54);
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}
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static void send_and_receive(void *obj, void *data, QGuestAllocator *alloc)
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{
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QI2CDevice *i2cdev = (QI2CDevice *)obj;
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uint8_t value;
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value = i2c_get8(i2cdev, PCA9552_LS0);
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g_assert_cmphex(value, ==, 0x55);
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value = i2c_get8(i2cdev, PCA9552_INPUT0);
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g_assert_cmphex(value, ==, 0xFF);
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pca9552_init(i2cdev);
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value = i2c_get8(i2cdev, PCA9552_LS0);
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g_assert_cmphex(value, ==, 0x54);
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value = i2c_get8(i2cdev, PCA9552_INPUT0);
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g_assert_cmphex(value, ==, 0xFE);
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value = i2c_get8(i2cdev, PCA9552_LS3);
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g_assert_cmphex(value, ==, 0x54);
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value = i2c_get8(i2cdev, PCA9552_INPUT1);
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g_assert_cmphex(value, ==, 0xEF);
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}
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static void pca9552_register_nodes(void)
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{
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QOSGraphEdgeOptions opts = {
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.extra_device_opts = "address=0x60"
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};
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add_qi2c_address(&opts, &(QI2CAddress) { 0x60 });
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qos_node_create_driver("pca9552", i2c_device_create);
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qos_node_consumes("pca9552", "i2c-bus", &opts);
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qos_add_test("tx-rx", "pca9552", send_and_receive, NULL);
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qos_add_test("rx-autoinc", "pca9552", receive_autoinc, NULL);
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}
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libqos_init(pca9552_register_nodes);
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