Allow writing an ACPI device to the generated ACPI code.
Signed-off-by: Simon Glass sjg@chromium.org Reviewed-by: Bin Meng bmeng.cn@gmail.com Reviewed-by: Wolfgang Wallner wolfgang.wallner@br-automation.com ---
(no changes since v1)
include/acpi/acpigen.h | 9 +++++++++ lib/acpi/acpigen.c | 7 +++++++ test/dm/acpigen.c | 27 +++++++++++++++++++++++++++ 3 files changed, 43 insertions(+)
diff --git a/include/acpi/acpigen.h b/include/acpi/acpigen.h index 1f37c9c31c..59d7c2ff6f 100644 --- a/include/acpi/acpigen.h +++ b/include/acpi/acpigen.h @@ -56,6 +56,7 @@ enum { AND_OP = 0x7b, OR_OP = 0x7d, NOT_OP = 0x80, + DEVICE_OP = 0x82, POWER_RES_OP = 0x84, RETURN_OP = 0xa4, }; @@ -313,6 +314,14 @@ void acpigen_write_method(struct acpi_ctx *ctx, const char *name, int nargs); void acpigen_write_method_serialized(struct acpi_ctx *ctx, const char *name, int nargs);
+/** + * acpigen_write_device() - Write an ACPI device + * + * @ctx: ACPI context pointer + * @name: Device name to write + */ +void acpigen_write_device(struct acpi_ctx *ctx, const char *name); + /** * acpigen_write_sta() - Write a _STA method * diff --git a/lib/acpi/acpigen.c b/lib/acpi/acpigen.c index 45691b7961..a66601a138 100644 --- a/lib/acpi/acpigen.c +++ b/lib/acpi/acpigen.c @@ -291,6 +291,13 @@ void acpigen_write_method_serialized(struct acpi_ctx *ctx, const char *name, ACPI_METHOD_SERIALIZED_MASK); }
+void acpigen_write_device(struct acpi_ctx *ctx, const char *name) +{ + acpigen_emit_ext_op(ctx, DEVICE_OP); + acpigen_write_len_f(ctx); + acpigen_emit_namestring(ctx, name); +} + void acpigen_write_sta(struct acpi_ctx *ctx, uint status) { /* Method (_STA, 0, NotSerialized) { Return (status) } */ diff --git a/test/dm/acpigen.c b/test/dm/acpigen.c index d1bdd18ce5..8fbe30b152 100644 --- a/test/dm/acpigen.c +++ b/test/dm/acpigen.c @@ -993,3 +993,30 @@ static int dm_test_acpi_resource_template(struct unit_test_state *uts) return 0; } DM_TEST(dm_test_acpi_resource_template, 0); + +/* Test writing a device */ +static int dm_test_acpi_device(struct unit_test_state *uts) +{ + struct acpi_ctx *ctx; + u8 *ptr; + + ut_assertok(alloc_context(&ctx)); + ptr = acpigen_get_current(ctx); + + acpigen_write_device(ctx, "\_SB." ACPI_TEST_DEV_NAME); + acpigen_pop_len(ctx); + + ut_asserteq(EXT_OP_PREFIX, *ptr++); + ut_asserteq(DEVICE_OP, *ptr++); + ut_asserteq(0xd, get_length(ptr)); + ptr += 3; + ut_asserteq(ROOT_PREFIX, *ptr++); + ut_asserteq(DUAL_NAME_PREFIX, *ptr++); + ptr += 8; + ut_asserteq_ptr(ptr, ctx->current); + + free_context(&ctx); + + return 0; +} +DM_TEST(dm_test_acpi_device, 0);