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/*
* Copyright (C) 2013 Google, Inc
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <fdtdec.h>
#include <dm.h>
#include <dm/ut.h>
#include <dm/test.h>
#include <dm/util.h>
#include <asm/gpio.h>
/* Test that sandbox GPIOs work correctly */
static int dm_test_gpio(struct dm_test_state *dms)
{
unsigned int offset, gpio;
struct dm_gpio_ops *ops;
struct device *dev;
const char *name;
int offset_count;
char buf[80];
/*
* We expect to get 3 banks. One is anonymous (just numbered) and
* comes from platdata. The other two are named a (20 gpios)
* and b (10 gpios) and come from the device tree. See
* test/dm/test.dts.
*/
ut_assertok(gpio_lookup_name("b4", &dev, &offset, &gpio));
ut_asserteq_str(dev->name, "extra-gpios");
ut_asserteq(4, offset);
ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT + 20 + 4, gpio);
name = gpio_get_bank_info(dev, &offset_count);
ut_asserteq_str("b", name);
ut_asserteq(10, offset_count);
/* Get the operations for this device */
ops = gpio_get_ops(dev);
ut_assert(ops->get_state);
/* Cannot get a value until it is reserved */
ut_asserteq(-1, ops->get_value(dev, offset));
/*
* Now some tests that use the 'sandbox' back door. All GPIOs
* should default to input, include b4 that we are using here.
*/
ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf)));
ut_asserteq_str("b4: in: 0 [ ]", buf);
/* Change it to an output */
sandbox_gpio_set_direction(dev, offset, 1);
ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf)));
ut_asserteq_str("b4: out: 0 [ ]", buf);
sandbox_gpio_set_value(dev, offset, 1);
ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf)));
ut_asserteq_str("b4: out: 1 [ ]", buf);
ut_assertok(ops->request(dev, offset, "testing"));
ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf)));
ut_asserteq_str("b4: out: 1 [x] testing", buf);
/* Change the value a bit */
ut_asserteq(1, ops->get_value(dev, offset));
ut_assertok(ops->set_value(dev, offset, 0));
ut_asserteq(0, ops->get_value(dev, offset));
ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf)));
ut_asserteq_str("b4: out: 0 [x] testing", buf);
ut_assertok(ops->set_value(dev, offset, 1));
ut_asserteq(1, ops->get_value(dev, offset));
/* Make it an input */
ut_assertok(ops->direction_input(dev, offset));
ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf)));
ut_asserteq_str("b4: in: 1 [x] testing", buf);
sandbox_gpio_set_value(dev, offset, 0);
ut_asserteq(0, sandbox_gpio_get_value(dev, offset));
ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf)));
ut_asserteq_str("b4: in: 0 [x] testing", buf);
ut_assertok(ops->free(dev, offset));
ut_assertok(ops->get_state(dev, offset, buf, sizeof(buf)));
ut_asserteq_str("b4: in: 0 [ ]", buf);
/* Check the 'a' bank also */
ut_assertok(gpio_lookup_name("a15", &dev, &offset, &gpio));
ut_asserteq_str(dev->name, "base-gpios");
ut_asserteq(15, offset);
ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT + 15, gpio);
name = gpio_get_bank_info(dev, &offset_count);
ut_asserteq_str("a", name);
ut_asserteq(20, offset_count);
/* And the anonymous bank */
ut_assertok(gpio_lookup_name("14", &dev, &offset, &gpio));
ut_asserteq_str(dev->name, "gpio_sandbox");
ut_asserteq(14, offset);
ut_asserteq(14, gpio);
name = gpio_get_bank_info(dev, &offset_count);
ut_asserteq_ptr(NULL, name);
ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT, offset_count);
return 0;
}
DM_TEST(dm_test_gpio, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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