mirror of
https://gitlab.com/qemu-project/qemu
synced 2024-11-05 20:35:44 +00:00
5141d4158c
Specs are available here :
https://www.nxp.com/docs/en/application-note/AN264.pdf
This is a simple model supporting the basic registers for led and GPIO
mode. The device also supports two blinking rates but not the model
yet.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180530064049.27976-7-clg@kaod.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
116 lines
2.8 KiB
C
116 lines
2.8 KiB
C
/*
|
|
* 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;
|
|
}
|