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u-boot/test/dm/gpio.c
Simon Glass caa4daa2ae dm: treewide: Rename 'platdata' variables to just 'plat' 
We use 'priv' for private data but often use 'platdata' for platform data.
We can't really use 'pdata' since that is ambiguous (it could mean private
or platform data).

Rename some of the latter variables to end with 'plat' for consistency.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-13 16:51:08 -07:00

584 lines
20 KiB
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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 <log.h>
#include <malloc.h>
#include <acpi/acpi_device.h>
#include <asm/gpio.h>
#include <dm/device-internal.h>
#include <dm/root.h>
#include <dm/test.h>
#include <dm/util.h>
#include <test/test.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;
struct gpio_desc *desc;
const char *name;
int offset_count;
char buf[80];
/*
* We expect to get 4 banks. One is anonymous (just numbered) and
* comes from plat. The other are named a (20 gpios),
* b (10 gpios) and c (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(GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE,
sandbox_gpio_get_dir_flags(dev, offset));
ut_assertok(ops->set_dir_flags(dev, offset,
GPIOD_IS_OUT | GPIOD_OPEN_DRAIN));
ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_DRAIN,
sandbox_gpio_get_dir_flags(dev, offset));
ut_assertok(ops->set_dir_flags(dev, offset,
GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE));
ut_asserteq(GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE,
sandbox_gpio_get_dir_flags(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);
/* add gpio hog tests */
ut_assertok(gpio_hog_lookup_name("hog_input_active_low", &desc));
ut_asserteq(GPIOD_IS_IN | GPIOD_ACTIVE_LOW, desc->flags);
ut_asserteq(10, desc->offset);
ut_asserteq(1, dm_gpio_get_value(desc));
ut_assertok(gpio_hog_lookup_name("hog_input_active_high", &desc));
ut_asserteq(GPIOD_IS_IN, desc->flags);
ut_asserteq(11, desc->offset);
ut_asserteq(0, dm_gpio_get_value(desc));
ut_assertok(gpio_hog_lookup_name("hog_output_low", &desc));
ut_asserteq(GPIOD_IS_OUT, desc->flags);
ut_asserteq(12, desc->offset);
ut_asserteq(0, dm_gpio_get_value(desc));
ut_assertok(dm_gpio_set_value(desc, 1));
ut_asserteq(1, dm_gpio_get_value(desc));
ut_assertok(gpio_hog_lookup_name("hog_output_high", &desc));
ut_asserteq(GPIOD_IS_OUT, desc->flags);
ut_asserteq(13, desc->offset);
ut_asserteq(1, dm_gpio_get_value(desc));
ut_assertok(dm_gpio_set_value(desc, 0));
ut_asserteq(0, dm_gpio_get_value(desc));
/* Check if lookup for labels work */
ut_assertok(gpio_lookup_name("hog_input_active_low", &dev, &offset,
&gpio));
ut_asserteq_str(dev->name, "base-gpios");
ut_asserteq(10, offset);
ut_asserteq(CONFIG_SANDBOX_GPIO_COUNT + 10, gpio);
ut_assert(gpio_lookup_name("hog_not_exist", &dev, &offset,
&gpio));
return 0;
}
DM_TEST(dm_test_gpio, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
/* Test that GPIO open-drain/open-source emulation works correctly */
static int dm_test_gpio_opendrain_opensource(struct unit_test_state *uts)
{
struct gpio_desc desc_list[8];
struct udevice *dev, *gpio_c;
char buf[80];
ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
ut_asserteq_str("a-test", dev->name);
ut_assertok(uclass_get_device(UCLASS_GPIO, 3, &gpio_c));
ut_asserteq_str("pinmux-gpios", gpio_c->name);
ut_asserteq(8, gpio_request_list_by_name(dev, "test3-gpios", desc_list,
ARRAY_SIZE(desc_list), 0))
ut_asserteq(true, !!device_active(gpio_c));
ut_asserteq_ptr(gpio_c, desc_list[0].dev);
ut_asserteq_ptr(gpio_c, desc_list[1].dev);
ut_asserteq_ptr(gpio_c, desc_list[2].dev);
ut_asserteq_ptr(gpio_c, desc_list[3].dev);
ut_asserteq_ptr(gpio_c, desc_list[4].dev);
ut_asserteq_ptr(gpio_c, desc_list[5].dev);
ut_asserteq_ptr(gpio_c, desc_list[6].dev);
ut_asserteq_ptr(gpio_c, desc_list[7].dev);
/* GPIO 0 is (GPIO_OUT|GPIO_OPEN_DRAIN) */
ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_DRAIN,
sandbox_gpio_get_dir_flags(gpio_c, 0));
/* Set it as output high, should become an input */
ut_assertok(dm_gpio_set_value(&desc_list[0], 1));
ut_assertok(gpio_get_status(gpio_c, 0, buf, sizeof(buf)));
ut_asserteq_str("c0: input: 0 [x] a-test.test3-gpios0", buf);
/* Set it as output low, should become output low */
ut_assertok(dm_gpio_set_value(&desc_list[0], 0));
ut_assertok(gpio_get_status(gpio_c, 0, buf, sizeof(buf)));
ut_asserteq_str("c0: output: 0 [x] a-test.test3-gpios0", buf);
/* GPIO 1 is (GPIO_OUT|GPIO_OPEN_SOURCE) */
ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_SOURCE,
sandbox_gpio_get_dir_flags(gpio_c, 1));
/* Set it as output high, should become output high */
ut_assertok(dm_gpio_set_value(&desc_list[1], 1));
ut_assertok(gpio_get_status(gpio_c, 1, buf, sizeof(buf)));
ut_asserteq_str("c1: output: 1 [x] a-test.test3-gpios1", buf);
/* Set it as output low, should become an input */
ut_assertok(dm_gpio_set_value(&desc_list[1], 0));
ut_assertok(gpio_get_status(gpio_c, 1, buf, sizeof(buf)));
ut_asserteq_str("c1: input: 1 [x] a-test.test3-gpios1", buf);
/* GPIO 6 is (GPIO_ACTIVE_LOW|GPIO_OUT|GPIO_OPEN_DRAIN) */
ut_asserteq(GPIOD_ACTIVE_LOW | GPIOD_IS_OUT | GPIOD_OPEN_DRAIN,
sandbox_gpio_get_dir_flags(gpio_c, 6));
/* Set it as output high, should become output low */
ut_assertok(dm_gpio_set_value(&desc_list[6], 1));
ut_assertok(gpio_get_status(gpio_c, 6, buf, sizeof(buf)));
ut_asserteq_str("c6: output: 0 [x] a-test.test3-gpios6", buf);
/* Set it as output low, should become an input */
ut_assertok(dm_gpio_set_value(&desc_list[6], 0));
ut_assertok(gpio_get_status(gpio_c, 6, buf, sizeof(buf)));
ut_asserteq_str("c6: input: 0 [x] a-test.test3-gpios6", buf);
/* GPIO 7 is (GPIO_ACTIVE_LOW|GPIO_OUT|GPIO_OPEN_SOURCE) */
ut_asserteq(GPIOD_ACTIVE_LOW | GPIOD_IS_OUT | GPIOD_OPEN_SOURCE,
sandbox_gpio_get_dir_flags(gpio_c, 7));
/* Set it as output high, should become an input */
ut_assertok(dm_gpio_set_value(&desc_list[7], 1));
ut_assertok(gpio_get_status(gpio_c, 7, buf, sizeof(buf)));
ut_asserteq_str("c7: input: 0 [x] a-test.test3-gpios7", buf);
/* Set it as output low, should become output high */
ut_assertok(dm_gpio_set_value(&desc_list[7], 0));
ut_assertok(gpio_get_status(gpio_c, 7, buf, sizeof(buf)));
ut_asserteq_str("c7: output: 1 [x] a-test.test3-gpios7", buf);
ut_assertok(gpio_free_list(dev, desc_list, 8));
return 0;
}
DM_TEST(dm_test_gpio_opendrain_opensource,
UT_TESTF_SCAN_PDATA | UT_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, "sandbox_gpio");
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, UT_TESTF_SCAN_PDATA | UT_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, UT_TESTF_SCAN_PDATA | UT_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, UT_TESTF_SCAN_PDATA | UT_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, UT_TESTF_SCAN_PDATA | UT_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_asserteq(GPIOF_INPUT, gpio_get_function(gpio_a, 4, NULL));
ut_assertok(gpio_free_list(dev, desc_list, 3));
ut_asserteq(GPIOF_UNUSED, gpio_get_function(gpio_a, 4, NULL));
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(GPIOF_OUTPUT, gpio_get_function(gpio_a, 4, NULL));
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(GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE,
sandbox_gpio_get_dir_flags(gpio_a, 1));
ut_asserteq(6, gpio_request_list_by_name(dev, "test2-gpios", desc_list,
ARRAY_SIZE(desc_list), 0));
/* This was set to output previously but flags resetted to 0 = INPUT */
ut_asserteq(0, sandbox_gpio_get_dir_flags(gpio_a, 1));
ut_asserteq(GPIOF_INPUT, 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, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
/* Check the gpio pin configuration get from device tree information */
static int dm_test_gpio_get_dir_flags(struct unit_test_state *uts)
{
struct gpio_desc desc_list[6];
struct udevice *dev;
ulong flags;
ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
ut_asserteq(6, gpio_request_list_by_name(dev, "test3-gpios", desc_list,
ARRAY_SIZE(desc_list), 0));
ut_assertok(dm_gpio_get_dir_flags(&desc_list[0], &flags));
ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_DRAIN, flags);
ut_assertok(dm_gpio_get_dir_flags(&desc_list[1], &flags));
ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_SOURCE, flags);
ut_assertok(dm_gpio_get_dir_flags(&desc_list[2], &flags));
ut_asserteq(GPIOD_IS_OUT, flags);
ut_assertok(dm_gpio_get_dir_flags(&desc_list[3], &flags));
ut_asserteq(GPIOD_IS_IN | GPIOD_PULL_UP, flags);
ut_assertok(dm_gpio_get_dir_flags(&desc_list[4], &flags));
ut_asserteq(GPIOD_IS_IN | GPIOD_PULL_DOWN, flags);
ut_assertok(dm_gpio_get_dir_flags(&desc_list[5], &flags));
ut_asserteq(GPIOD_IS_IN, flags);
ut_assertok(gpio_free_list(dev, desc_list, 6));
return 0;
}
DM_TEST(dm_test_gpio_get_dir_flags, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
/* Test of gpio_get_acpi() */
static int dm_test_gpio_get_acpi(struct unit_test_state *uts)
{
struct acpi_gpio agpio;
struct udevice *dev;
struct gpio_desc desc;
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));
/* See sb_gpio_get_acpi() */
ut_assertok(gpio_get_acpi(&desc, &agpio));
ut_asserteq(1, agpio.pin_count);
ut_asserteq(4, agpio.pins[0]);
ut_asserteq(ACPI_GPIO_TYPE_IO, agpio.type);
ut_asserteq(ACPI_GPIO_PULL_UP, agpio.pull);
ut_asserteq_str("\\_SB.PINC", agpio.resource);
ut_asserteq(0, agpio.interrupt_debounce_timeout);
ut_asserteq(0, agpio.irq.pin);
ut_asserteq(1234, agpio.output_drive_strength);
ut_asserteq(true, agpio.io_shared);
ut_asserteq(ACPI_GPIO_IO_RESTRICT_INPUT, agpio.io_restrict);
ut_asserteq(ACPI_GPIO_ACTIVE_HIGH, agpio.polarity);
return 0;
}
DM_TEST(dm_test_gpio_get_acpi, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
/* Test of gpio_get_acpi() with an interrupt GPIO */
static int dm_test_gpio_get_acpi_irq(struct unit_test_state *uts)
{
struct acpi_gpio agpio;
struct udevice *dev;
struct gpio_desc desc;
ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
ut_asserteq_str("a-test", dev->name);
ut_assertok(gpio_request_by_name(dev, "test2-gpios", 2, &desc, 0));
/* See sb_gpio_get_acpi() */
ut_assertok(gpio_get_acpi(&desc, &agpio));
ut_asserteq(1, agpio.pin_count);
ut_asserteq(6, agpio.pins[0]);
ut_asserteq(ACPI_GPIO_TYPE_INTERRUPT, agpio.type);
ut_asserteq(ACPI_GPIO_PULL_DOWN, agpio.pull);
ut_asserteq_str("\\_SB.PINC", agpio.resource);
ut_asserteq(4321, agpio.interrupt_debounce_timeout);
ut_asserteq(6, agpio.irq.pin);
ut_asserteq(ACPI_IRQ_ACTIVE_BOTH, agpio.irq.polarity);
ut_asserteq(ACPI_IRQ_SHARED, agpio.irq.shared);
ut_asserteq(true, agpio.irq.wake);
ut_asserteq(0, agpio.output_drive_strength);
ut_asserteq(false, agpio.io_shared);
ut_asserteq(0, agpio.io_restrict);
ut_asserteq(ACPI_GPIO_ACTIVE_LOW, agpio.polarity);
return 0;
}
DM_TEST(dm_test_gpio_get_acpi_irq, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
/* Test that we can get/release GPIOs using managed API */
static int dm_test_gpio_devm(struct unit_test_state *uts)
{
static const u32 flags = GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE;
struct gpio_desc *desc1, *desc2, *desc3, *desc_err;
struct udevice *dev;
struct udevice *dev2;
ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "a-test",
&dev));
ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "another-test",
&dev2));
/* Get 3 GPIOs from 'a-test' dev */
desc1 = devm_gpiod_get_index(dev, "test4", 0, flags);
ut_assert(!IS_ERR(desc1));
desc2 = devm_gpiod_get_index(dev, "test4", 1, flags);
ut_assert(!IS_ERR(desc2));
desc3 = devm_gpiod_get_index_optional(dev, "test5", 0, flags);
ut_assert(!IS_ERR(desc3));
ut_assert(desc3);
/*
* Try get the same 3 GPIOs from 'a-test' and 'another-test' devices.
* check that it fails
*/
desc_err = devm_gpiod_get_index(dev, "test4", 0, flags);
ut_asserteq(-EBUSY, PTR_ERR(desc_err));
desc_err = devm_gpiod_get_index(dev2, "test4", 0, flags);
ut_asserteq(-EBUSY, PTR_ERR(desc_err));
desc_err = devm_gpiod_get_index(dev, "test4", 1, flags);
ut_asserteq(-EBUSY, PTR_ERR(desc_err));
desc_err = devm_gpiod_get_index(dev2, "test4", 1, flags);
ut_asserteq(-EBUSY, PTR_ERR(desc_err));
desc_err = devm_gpiod_get_index_optional(dev, "test5", 0, flags);
ut_asserteq_ptr(NULL, desc_err);
desc_err = devm_gpiod_get_index_optional(dev2, "test5", 0, flags);
ut_asserteq_ptr(NULL, desc_err);
/* Try get GPIOs outside of the list */
desc_err = devm_gpiod_get_index(dev, "test4", 2, flags);
ut_assert(IS_ERR(desc_err));
desc_err = devm_gpiod_get_index_optional(dev, "test5", 1, flags);
ut_asserteq_ptr(NULL, desc_err);
/* Manipulate the GPIOs */
ut_assertok(dm_gpio_set_value(desc1, 1));
ut_asserteq(1, dm_gpio_get_value(desc1));
ut_assertok(dm_gpio_set_value(desc1, 0));
ut_asserteq(0, dm_gpio_get_value(desc1));
ut_assertok(dm_gpio_set_value(desc2, 1));
ut_asserteq(1, dm_gpio_get_value(desc2));
ut_assertok(dm_gpio_set_value(desc2, 0));
ut_asserteq(0, dm_gpio_get_value(desc2));
ut_assertok(dm_gpio_set_value(desc3, 1));
ut_asserteq(1, dm_gpio_get_value(desc3));
ut_assertok(dm_gpio_set_value(desc3, 0));
ut_asserteq(0, dm_gpio_get_value(desc3));
/* Check that the GPIO cannot be owned by more than one device */
desc_err = devm_gpiod_get_index(dev2, "test4", 0, flags);
ut_asserteq(-EBUSY, PTR_ERR(desc_err));
desc_err = devm_gpiod_get_index(dev2, "test4", 1, flags);
ut_asserteq(-EBUSY, PTR_ERR(desc_err));
desc_err = devm_gpiod_get_index_optional(dev2, "test5", 0, flags);
ut_asserteq_ptr(NULL, desc_err);
/*
* Release one GPIO and check that we can get it back using
* 'another-test' and then 'a-test'
*/
devm_gpiod_put(dev, desc2);
desc2 = devm_gpiod_get_index(dev2, "test4", 1, flags);
ut_assert(!IS_ERR(desc2));
devm_gpiod_put(dev2, desc2);
desc2 = devm_gpiod_get_index(dev, "test4", 1, flags);
ut_assert(!IS_ERR(desc2));
/* Release one GPIO before removing the 'a-test' dev. */
devm_gpiod_put(dev, desc2);
device_remove(dev, DM_REMOVE_NORMAL);
/* All the GPIOs must have been freed. We should be able to claim
* them with the 'another-test' device.
*/
desc1 = devm_gpiod_get_index(dev2, "test4", 0, flags);
ut_assert(!IS_ERR(desc1));
desc2 = devm_gpiod_get_index(dev2, "test4", 1, flags);
ut_assert(!IS_ERR(desc2));
desc3 = devm_gpiod_get_index_optional(dev2, "test5", 0, flags);
ut_assert(!IS_ERR(desc3));
ut_assert(desc3);
device_remove(dev2, DM_REMOVE_NORMAL);
return 0;
}
DM_TEST(dm_test_gpio_devm, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
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