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authorSimon Glass <sjg@chromium.org>2021-02-04 21:22:03 -0700
committerTom Rini <trini@konsulko.com>2021-03-03 15:40:10 -0500
commit7e0a96d559da493812220731535f5ba6351bcea1 (patch)
treef88b161ef06be9f95832f3b3dabe62a6dbcd3128 /test
parente87e86f31c54a4e49159dca7fbd6d9694efcd720 (diff)
downloadu-boot-7e0a96d559da493812220731535f5ba6351bcea1.tar.gz
dm: gpio: Add a way to update flags
It is convenient to be able to adjust some of the flags for a GPIO while leaving others alone. Add a function for this. Update dm_gpio_set_dir_flags() to make use of this. Also update dm_gpio_set_value() to use this also, since this allows the open-drain / open-source features to be implemented directly in the driver, rather than using the uclass workaround. Update the sandbox tests accordingly. This involves a lot of changes to dm_test_gpio_opendrain_opensource() since we no-longer have the direciion being reported differently depending on the open drain/open source flags. Also update the STM32 drivers to let the uclass handle the active low/high logic. Drop the GPIOD_FLAGS_OUTPUT() macro which is no-longer used. Signed-off-by: Simon Glass <sjg@chromium.org> Tested-by: Kory Maincent <kory.maincent@bootlin.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Tested-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Tested-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Diffstat (limited to 'test')
-rw-r--r--test/dm/gpio.c132
1 files changed, 115 insertions, 17 deletions
diff --git a/test/dm/gpio.c b/test/dm/gpio.c
index dfbb634bf7..be5da95304 100644
--- a/test/dm/gpio.c
+++ b/test/dm/gpio.c
@@ -178,15 +178,15 @@ static int dm_test_gpio_opendrain_opensource(struct unit_test_state *uts)
ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_DRAIN,
sandbox_gpio_get_flags(gpio_c, 0));
- /* Set it as output high, should become an input */
+ /* Set it as output high */
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);
+ ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_DRAIN | GPIOD_IS_OUT_ACTIVE,
+ sandbox_gpio_get_flags(gpio_c, 0));
- /* Set it as output low, should become output low */
+ /* Set it as 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);
+ ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_DRAIN,
+ sandbox_gpio_get_flags(gpio_c, 0));
/* GPIO 1 is (GPIO_OUT|GPIO_OPEN_SOURCE) */
ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_SOURCE,
@@ -197,13 +197,21 @@ static int dm_test_gpio_opendrain_opensource(struct unit_test_state *uts)
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 */
+ /* Set it as output low */
ut_assertok(dm_gpio_set_value(&desc_list[1], 0));
+ ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_SOURCE,
+ sandbox_gpio_get_flags(gpio_c, 1));
+
ut_assertok(gpio_get_status(gpio_c, 1, buf, sizeof(buf)));
- ut_asserteq_str("c1: input: 1 [x] a-test.test3-gpios1", buf);
+ ut_asserteq_str("c1: output: 0 [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,
+ /*
+ * GPIO 6 is (GPIO_ACTIVE_LOW|GPIO_OUT|GPIO_OPEN_DRAIN). Looking at it
+ * directlt from the driver, we get GPIOD_IS_OUT_ACTIVE also, since it
+ * is active low
+ */
+ ut_asserteq(GPIOD_ACTIVE_LOW | GPIOD_IS_OUT | GPIOD_OPEN_DRAIN |
+ GPIOD_IS_OUT_ACTIVE,
sandbox_gpio_get_flags(gpio_c, 6));
/* Set it as output high, should become output low */
@@ -211,19 +219,21 @@ static int dm_test_gpio_opendrain_opensource(struct unit_test_state *uts)
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 */
+ /* Set it as output low */
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);
+ ut_asserteq(GPIOD_ACTIVE_LOW | GPIOD_IS_OUT | GPIOD_OPEN_DRAIN |
+ GPIOD_IS_OUT_ACTIVE,
+ sandbox_gpio_get_flags(gpio_c, 6));
/* GPIO 7 is (GPIO_ACTIVE_LOW|GPIO_OUT|GPIO_OPEN_SOURCE) */
- ut_asserteq(GPIOD_ACTIVE_LOW | GPIOD_IS_OUT | GPIOD_OPEN_SOURCE,
+ ut_asserteq(GPIOD_ACTIVE_LOW | GPIOD_IS_OUT | GPIOD_OPEN_SOURCE |
+ GPIOD_IS_OUT_ACTIVE,
sandbox_gpio_get_flags(gpio_c, 7));
- /* Set it as output high, should become an input */
+ /* Set it as output high */
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);
+ ut_asserteq(GPIOD_ACTIVE_LOW | GPIOD_IS_OUT | GPIOD_OPEN_SOURCE,
+ sandbox_gpio_get_flags(gpio_c, 7));
/* Set it as output low, should become output high */
ut_assertok(dm_gpio_set_value(&desc_list[7], 0));
@@ -582,3 +592,91 @@ static int dm_test_gpio_devm(struct unit_test_state *uts)
return 0;
}
DM_TEST(dm_test_gpio_devm, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
+
+static int dm_test_clrset_flags(struct unit_test_state *uts)
+{
+ struct gpio_desc desc;
+ struct udevice *dev;
+ ulong flags;
+
+ 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(dm_gpio_clrset_flags(&desc, GPIOD_MASK_DIR, GPIOD_IS_OUT));
+ ut_assertok(dm_gpio_get_flags(&desc, &flags));
+ ut_asserteq(GPIOD_IS_OUT, flags);
+ ut_asserteq(GPIOD_IS_OUT, desc.flags);
+ ut_asserteq(0, sandbox_gpio_get_value(desc.dev, desc.offset));
+
+ ut_assertok(dm_gpio_clrset_flags(&desc, 0, GPIOD_IS_OUT_ACTIVE));
+ ut_assertok(dm_gpio_get_flags(&desc, &flags));
+ ut_asserteq(GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE, flags);
+ ut_asserteq(GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE, desc.flags);
+ ut_asserteq(1, sandbox_gpio_get_value(desc.dev, desc.offset));
+ ut_asserteq(1, dm_gpio_get_value(&desc));
+
+ ut_assertok(dm_gpio_clrset_flags(&desc, GPIOD_MASK_DIR, GPIOD_IS_IN));
+ ut_assertok(dm_gpio_get_flags(&desc, &flags));
+ ut_asserteq(GPIOD_IS_IN, flags & GPIOD_MASK_DIR);
+ ut_asserteq(GPIOD_IS_IN, desc.flags & GPIOD_MASK_DIR);
+
+ ut_assertok(dm_gpio_clrset_flags(&desc, GPIOD_MASK_PULL,
+ GPIOD_PULL_UP));
+ ut_assertok(dm_gpio_get_flags(&desc, &flags));
+ ut_asserteq(GPIOD_IS_IN | GPIOD_PULL_UP, flags);
+ ut_asserteq(GPIOD_IS_IN | GPIOD_PULL_UP, desc.flags);
+
+ /* Check we cannot set both PULL_UP and PULL_DOWN */
+ ut_asserteq(-EINVAL, dm_gpio_clrset_flags(&desc, 0, GPIOD_PULL_DOWN));
+
+ return 0;
+}
+DM_TEST(dm_test_clrset_flags, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
+
+/* Check that an active-low GPIO works as expected */
+static int dm_test_clrset_flags_invert(struct unit_test_state *uts)
+{
+ struct gpio_desc desc;
+ struct udevice *dev;
+ ulong flags;
+
+ 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,
+ GPIOD_IS_OUT | GPIOD_ACTIVE_LOW));
+
+ /*
+ * From this size we see it as 0 (active low), but the sandbox driver
+ * sees the pin value high
+ */
+ ut_asserteq(0, dm_gpio_get_value(&desc));
+ ut_asserteq(1, sandbox_gpio_get_value(desc.dev, desc.offset));
+
+ ut_assertok(dm_gpio_set_value(&desc, 1));
+ ut_asserteq(1, dm_gpio_get_value(&desc));
+ ut_asserteq(0, sandbox_gpio_get_value(desc.dev, desc.offset));
+
+ /* Do the same with dm_gpio_clrset_flags() */
+ ut_assertok(dm_gpio_clrset_flags(&desc, GPIOD_IS_OUT_ACTIVE, 0));
+ ut_asserteq(0, dm_gpio_get_value(&desc));
+ ut_asserteq(1, sandbox_gpio_get_value(desc.dev, desc.offset));
+
+ ut_assertok(dm_gpio_clrset_flags(&desc, 0, GPIOD_IS_OUT_ACTIVE));
+ ut_asserteq(1, dm_gpio_get_value(&desc));
+ ut_asserteq(0, sandbox_gpio_get_value(desc.dev, desc.offset));
+
+ ut_assertok(dm_gpio_get_flags(&desc, &flags));
+ ut_asserteq(GPIOD_IS_OUT | GPIOD_ACTIVE_LOW | GPIOD_IS_OUT_ACTIVE,
+ flags);
+ ut_asserteq(GPIOD_IS_OUT | GPIOD_ACTIVE_LOW | GPIOD_IS_OUT_ACTIVE,
+ desc.flags);
+
+ ut_assertok(dm_gpio_clrset_flags(&desc, GPIOD_IS_OUT_ACTIVE, 0));
+ ut_assertok(dm_gpio_get_flags(&desc, &flags));
+ ut_asserteq(GPIOD_IS_OUT | GPIOD_ACTIVE_LOW, flags);
+ ut_asserteq(GPIOD_IS_OUT | GPIOD_ACTIVE_LOW, desc.flags);
+
+ return 0;
+}
+DM_TEST(dm_test_clrset_flags_invert, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);