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acpi: Support generation of SPI descriptor

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Add a function to write a SPI descriptor to the generated ACPI code.

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>
This commit is contained in:
Simon Glass
2020-07-07 13:11:49 -06:00
committed by Bin Meng
parent 31e1787ec1
commit 70e5e67a4d
5 changed files with 212 additions and 2 deletions
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36
test/dm/acpigen.c
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@@ -308,3 +308,39 @@ static int dm_test_acpi_i2c(struct unit_test_state *uts)
return 0;
}
DM_TEST(dm_test_acpi_i2c, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
/* Test emitting a SPI descriptor */
static int dm_test_acpi_spi(struct unit_test_state *uts)
{
struct acpi_ctx *ctx;
struct udevice *dev;
u8 *ptr;
ut_assertok(alloc_context(&ctx));
ptr = acpigen_get_current(ctx);
ut_assertok(uclass_first_device_err(UCLASS_SPI_FLASH, &dev));
ut_assertok(acpi_device_write_spi_dev(ctx, dev));
ut_asserteq(31, acpigen_get_current(ctx) - ptr);
ut_asserteq(ACPI_DESCRIPTOR_SERIAL_BUS, ptr[0]);
ut_asserteq(28, get_unaligned((u16 *)(ptr + 1)));
ut_asserteq(ACPI_SPI_SERIAL_BUS_REVISION_ID, ptr[3]);
ut_asserteq(0, ptr[4]);
ut_asserteq(ACPI_SERIAL_BUS_TYPE_SPI, ptr[5]);
ut_asserteq(2, ptr[6]);
ut_asserteq(0, get_unaligned((u16 *)(ptr + 7)));
ut_asserteq(ACPI_SPI_TYPE_SPECIFIC_REVISION_ID, ptr[9]);
ut_asserteq(9, get_unaligned((u16 *)(ptr + 10)));
ut_asserteq(40000000, get_unaligned((u32 *)(ptr + 12)));
ut_asserteq(8, ptr[16]);
ut_asserteq(0, ptr[17]);
ut_asserteq(0, ptr[18]);
ut_asserteq(0, get_unaligned((u16 *)(ptr + 19)));
ut_asserteq_str("\\_SB.SPI0", (char *)ptr + 21);
free_context(&ctx);
return 0;
}
DM_TEST(dm_test_acpi_spi, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);