diff options
| author | Simon Glass <sjg@chromium.org> | 2020-07-07 13:11:47 -0600 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2020-07-17 14:32:24 +0800 |
| commit | 4ebc940b39b6a43de9d1fa74653321cd6fdb4d3a (patch) | |
| tree | 879e368605d9dae2a7cf4ba960711554c9b28eba /test | |
| parent | a9e0a077df5509c3d4b49e745c746c38a4f9a7a1 (diff) | |
| download | u-boot-4ebc940b39b6a43de9d1fa74653321cd6fdb4d3a.tar.gz | |
acpi: Support generation of a GPIO/irq for a device
Some devices use interrupts but some use GPIOs. Since these are fully
specified in the device tree we can automatically produce the correct ACPI
descriptor for a device.
Add a function to handle this.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'test')
| -rw-r--r-- | test/dm/acpigen.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/test/dm/acpigen.c b/test/dm/acpigen.c index d15273d6bf..7d81652295 100644 --- a/test/dm/acpigen.c +++ b/test/dm/acpigen.c @@ -16,6 +16,7 @@ #include <asm/unaligned.h> #include <dm/acpi.h> #include <dm/test.h> +#include <dm/uclass-internal.h> #include <test/ut.h> /* Maximum size of the ACPI context needed for most tests */ @@ -235,3 +236,43 @@ static int dm_test_acpi_gpio_irq(struct unit_test_state *uts) return 0; } DM_TEST(dm_test_acpi_gpio_irq, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); + +/* Test emitting either a GPIO or interrupt descriptor */ +static int dm_test_acpi_interrupt_or_gpio(struct unit_test_state *uts) +{ + struct acpi_ctx *ctx; + struct udevice *dev; + u8 *ptr; + + ut_assertok(alloc_context(&ctx)); + + ptr = acpigen_get_current(ctx); + + /* This should produce an interrupt, even though it also has a GPIO */ + ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev)); + ut_asserteq_str("a-test", dev->name); + ut_asserteq(3, acpi_device_write_interrupt_or_gpio(ctx, dev, + "test2-gpios")); + ut_asserteq(ACPI_DESCRIPTOR_INTERRUPT, ptr[0]); + + /* This has no interrupt so should produce a GPIO */ + ptr = ctx->current; + ut_assertok(uclass_find_first_device(UCLASS_PANEL_BACKLIGHT, &dev)); + ut_asserteq(1, acpi_device_write_interrupt_or_gpio(ctx, dev, + "enable-gpios")); + ut_asserteq(ACPI_DESCRIPTOR_GPIO, ptr[0]); + + /* This one has neither */ + ptr = acpigen_get_current(ctx); + ut_assertok(uclass_get_device_by_seq(UCLASS_TEST_FDT, 3, &dev)); + ut_asserteq_str("b-test", dev->name); + ut_asserteq(-ENOENT, + acpi_device_write_interrupt_or_gpio(ctx, dev, + "enable-gpios")); + + free_context(&ctx); + + return 0; +} +DM_TEST(dm_test_acpi_interrupt_or_gpio, + DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); |