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u-boot-brain/test/dm/gpio.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2013 Google, Inc
*/
#include <common.h>
#include <fdtdec.h>
#include <dm.h>
#include <dm/root.h>
#include <dm/test.h>
#include <dm/util.h>
#include <asm/gpio.h>
#include <test/ut.h>
/* Test that sandbox GPIOs work correctly */
static int dm_test_gpio(struct unit_test_state *uts)
{
unsigned int offset, gpio;
struct dm_gpio_ops *ops;
struct udevice *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_function);
/* Cannot get a value until it is reserved */
ut_asserteq(-EBUSY, gpio_get_value(gpio + 1));
/*
* Now some tests that use the 'sandbox' back door. All GPIOs
* should default to input, include b4 that we are using here.
*/
ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
ut_asserteq_str("b4: input: 0 [ ]", buf);
/* Change it to an output */
sandbox_gpio_set_direction(dev, offset, 1);
ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
ut_asserteq_str("b4: output: 0 [ ]", buf);
sandbox_gpio_set_value(dev, offset, 1);
ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
ut_asserteq_str("b4: output: 1 [ ]", buf);
ut_assertok(gpio_request(gpio, "testing"));
ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
ut_asserteq_str("b4: output: 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(gpio_get_status(dev, offset, buf, sizeof(buf)));
ut_asserteq_str("b4: output: 0 [x] testing", buf);
ut_assertok(ops->set_value(dev, offset, 1));
ut_asserteq(1, ops->get_value(dev, offset));
/* Make it an open drain output, and reset it */
ut_asserteq(0, sandbox_gpio_get_open_drain(dev, offset));
ut_assertok(ops->set_open_drain(dev, offset, 1));
ut_asserteq(1, sandbox_gpio_get_open_drain(dev, offset));
ut_assertok(ops->set_open_drain(dev, offset, 0));
ut_asserteq(0, sandbox_gpio_get_open_drain(dev, offset));
/* Make it an input */
ut_assertok(ops->direction_input(dev, offset));
ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
ut_asserteq_str("b4: input: 1 [x] testing", buf);
sandbox_gpio_set_value(dev, offset, 0);
ut_asserteq(0, sandbox_gpio_get_value(dev, offset));
ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
ut_asserteq_str("b4: input: 0 [x] testing", buf);
ut_assertok(gpio_free(gpio));
ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
ut_asserteq_str("b4: input: 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);
return 0;
}
DM_TEST(dm_test_gpio, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
/* Test that sandbox anonymous GPIOs work correctly */
static int dm_test_gpio_anon(struct unit_test_state *uts)
{
unsigned int offset, gpio;
struct udevice *dev;
const char *name;
int 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_anon, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
/* Test that gpio_requestf() works as expected */
static int dm_test_gpio_requestf(struct unit_test_state *uts)
{
unsigned int offset, gpio;
struct udevice *dev;
char buf[80];
ut_assertok(gpio_lookup_name("b5", &dev, &offset, &gpio));
ut_assertok(gpio_requestf(gpio, "testing %d %s", 1, "hi"));
sandbox_gpio_set_direction(dev, offset, 1);
sandbox_gpio_set_value(dev, offset, 1);
ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
ut_asserteq_str("b5: output: 1 [x] testing 1 hi", buf);
return 0;
}
DM_TEST(dm_test_gpio_requestf, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
/* Test that gpio_request() copies its string */
static int dm_test_gpio_copy(struct unit_test_state *uts)
{
unsigned int offset, gpio;
struct udevice *dev;
char buf[80], name[10];
ut_assertok(gpio_lookup_name("b6", &dev, &offset, &gpio));
strcpy(name, "odd_name");
ut_assertok(gpio_request(gpio, name));
sandbox_gpio_set_direction(dev, offset, 1);
sandbox_gpio_set_value(dev, offset, 1);
ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
ut_asserteq_str("b6: output: 1 [x] odd_name", buf);
strcpy(name, "nothing");
ut_assertok(gpio_get_status(dev, offset, buf, sizeof(buf)));
ut_asserteq_str("b6: output: 1 [x] odd_name", buf);
return 0;
}
DM_TEST(dm_test_gpio_copy, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
/* Test that we don't leak memory with GPIOs */
static int dm_test_gpio_leak(struct unit_test_state *uts)
{
ut_assertok(dm_test_gpio(uts));
ut_assertok(dm_test_gpio_anon(uts));
ut_assertok(dm_test_gpio_requestf(uts));
ut_assertok(dm_leak_check_end(uts));
return 0;
}
DM_TEST(dm_test_gpio_leak, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
/* Test that we can find GPIOs using phandles */
static int dm_test_gpio_phandles(struct unit_test_state *uts)
{
struct gpio_desc desc, desc_list[8], desc_list2[8];
struct udevice *dev, *gpio_a, *gpio_b;
ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
ut_asserteq_str("a-test", dev->name);
ut_assertok(gpio_request_by_name(dev, "test-gpios", 1, &desc, 0));
ut_assertok(uclass_get_device(UCLASS_GPIO, 1, &gpio_a));
ut_assertok(uclass_get_device(UCLASS_GPIO, 2, &gpio_b));
ut_asserteq_str("base-gpios", gpio_a->name);
ut_asserteq(true, !!device_active(gpio_a));
ut_asserteq_ptr(gpio_a, desc.dev);
ut_asserteq(4, desc.offset);
/* GPIOF_INPUT is the sandbox GPIO driver default */
ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_a, 4, NULL));
ut_assertok(dm_gpio_free(dev, &desc));
ut_asserteq(-ENOENT, gpio_request_by_name(dev, "test-gpios", 3, &desc,
0));
ut_asserteq_ptr(NULL, desc.dev);
ut_asserteq(desc.offset, 0);
ut_asserteq(-ENOENT, gpio_request_by_name(dev, "test-gpios", 5, &desc,
0));
/* Last GPIO is ignord as it comes after <0> */
ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc_list,
ARRAY_SIZE(desc_list), 0));
ut_asserteq(-EBUSY, gpio_request_list_by_name(dev, "test-gpios",
desc_list2,
ARRAY_SIZE(desc_list2),
0));
ut_assertok(gpio_free_list(dev, desc_list, 3));
ut_asserteq(3, gpio_request_list_by_name(dev, "test-gpios", desc_list,
ARRAY_SIZE(desc_list),
GPIOD_IS_OUT |
GPIOD_IS_OUT_ACTIVE));
ut_asserteq_ptr(gpio_a, desc_list[0].dev);
ut_asserteq(1, desc_list[0].offset);
ut_asserteq_ptr(gpio_a, desc_list[1].dev);
ut_asserteq(4, desc_list[1].offset);
ut_asserteq_ptr(gpio_b, desc_list[2].dev);
ut_asserteq(5, desc_list[2].offset);
ut_asserteq(1, dm_gpio_get_value(desc_list));
ut_assertok(gpio_free_list(dev, desc_list, 3));
ut_asserteq(6, gpio_request_list_by_name(dev, "test2-gpios", desc_list,
ARRAY_SIZE(desc_list), 0));
/* This was set to output previously, so still will be */
ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_a, 1, NULL));
/* Active low should invert the input value */
ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_b, 6, NULL));
ut_asserteq(1, dm_gpio_get_value(&desc_list[2]));
ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_b, 7, NULL));
ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_b, 8, NULL));
ut_asserteq(0, dm_gpio_get_value(&desc_list[4]));
ut_asserteq(GPIOF_OUTPUT, gpio_get_function(gpio_b, 9, NULL));
ut_asserteq(1, dm_gpio_get_value(&desc_list[5]));
return 0;
}
DM_TEST(dm_test_gpio_phandles, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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