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/*
* QTest testcase for the PCA9552 LED blinker
*
* Copyright (c) 2017-2018, IBM Corporation.
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "libqtest.h"
#include "libqos/i2c.h"
#include "hw/misc/pca9552_regs.h"
#define PCA9552_TEST_ID "pca9552-test"
#define PCA9552_TEST_ADDR 0x60
static I2CAdapter *i2c;
static uint8_t pca9552_get8(I2CAdapter *i2c, uint8_t addr, uint8_t reg)
{
uint8_t resp[1];
i2c_send(i2c, addr, ®, 1);
i2c_recv(i2c, addr, resp, 1);
return resp[0];
}
static void pca9552_set8(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
uint8_t value)
{
uint8_t cmd[2];
uint8_t resp[1];
cmd[0] = reg;
cmd[1] = value;
i2c_send(i2c, addr, cmd, 2);
i2c_recv(i2c, addr, resp, 1);
g_assert_cmphex(resp[0], ==, cmd[1]);
}
static void receive_autoinc(void)
{
uint8_t resp;
uint8_t reg = PCA9552_LS0 | PCA9552_AUTOINC;
i2c_send(i2c, PCA9552_TEST_ADDR, ®, 1);
/* PCA9552_LS0 */
i2c_recv(i2c, PCA9552_TEST_ADDR, &resp, 1);
g_assert_cmphex(resp, ==, 0x54);
/* PCA9552_LS1 */
i2c_recv(i2c, PCA9552_TEST_ADDR, &resp, 1);
g_assert_cmphex(resp, ==, 0x55);
/* PCA9552_LS2 */
i2c_recv(i2c, PCA9552_TEST_ADDR, &resp, 1);
g_assert_cmphex(resp, ==, 0x55);
/* PCA9552_LS3 */
i2c_recv(i2c, PCA9552_TEST_ADDR, &resp, 1);
g_assert_cmphex(resp, ==, 0x54);
}
static void send_and_receive(void)
{
uint8_t value;
value = pca9552_get8(i2c, PCA9552_TEST_ADDR, PCA9552_LS0);
g_assert_cmphex(value, ==, 0x55);
value = pca9552_get8(i2c, PCA9552_TEST_ADDR, PCA9552_INPUT0);
g_assert_cmphex(value, ==, 0x0);
/* Switch on LED 0 */
pca9552_set8(i2c, PCA9552_TEST_ADDR, PCA9552_LS0, 0x54);
value = pca9552_get8(i2c, PCA9552_TEST_ADDR, PCA9552_LS0);
g_assert_cmphex(value, ==, 0x54);
value = pca9552_get8(i2c, PCA9552_TEST_ADDR, PCA9552_INPUT0);
g_assert_cmphex(value, ==, 0x01);
/* Switch on LED 12 */
pca9552_set8(i2c, PCA9552_TEST_ADDR, PCA9552_LS3, 0x54);
value = pca9552_get8(i2c, PCA9552_TEST_ADDR, PCA9552_LS3);
g_assert_cmphex(value, ==, 0x54);
value = pca9552_get8(i2c, PCA9552_TEST_ADDR, PCA9552_INPUT1);
g_assert_cmphex(value, ==, 0x10);
}
int main(int argc, char **argv)
{
QTestState *s = NULL;
int ret;
g_test_init(&argc, &argv, NULL);
s = qtest_start("-machine n800 "
"-device pca9552,bus=i2c-bus.0,id=" PCA9552_TEST_ID
",address=0x60");
i2c = omap_i2c_create(s, OMAP2_I2C_1_BASE);
qtest_add_func("/pca9552/tx-rx", send_and_receive);
qtest_add_func("/pca9552/rx-autoinc", receive_autoinc);
ret = g_test_run();
if (s) {
qtest_quit(s);
}
g_free(i2c);
return ret;
}
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