acpi: Add support for writing a Power Resource
These are used in ACPI to disable power to various pats of the system when
in sleep. Add a way to create a power resource, with the caller finishing
off the details.
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>
diff --git a/test/dm/acpigen.c b/test/dm/acpigen.c
index 6374445..df062a2 100644
--- a/test/dm/acpigen.c
+++ b/test/dm/acpigen.c
@@ -701,3 +701,44 @@
return 0;
}
DM_TEST(dm_test_acpi_misc, 0);
+
+/* Test writing an ACPI power resource */
+static int dm_test_acpi_power_res(struct unit_test_state *uts)
+{
+ const char *const states[] = { "_PR0", "_PR3" };
+ const char *name = "PRIC";
+ const int level = 3;
+ const int order = 2;
+ struct acpi_ctx *ctx;
+ u8 *ptr;
+
+ ut_assertok(alloc_context(&ctx));
+
+ ptr = acpigen_get_current(ctx);
+
+ /* PowerResource (PRIC, 0, 0) */
+ acpigen_write_power_res(ctx, name, level, order, states,
+ ARRAY_SIZE(states));
+ ut_asserteq(0x28, acpigen_get_current(ctx) - ptr);
+ ut_asserteq(NAME_OP, ptr[0]);
+ ut_asserteq_strn(states[0], (char *)ptr + 1);
+ ut_asserteq(8, acpi_test_get_length(ptr + 6));
+ ut_asserteq_strn(name, (char *)ptr + 0xa);
+
+ ut_asserteq_strn(states[1], (char *)ptr + 0xf);
+ ut_asserteq(8, acpi_test_get_length(ptr + 0x14));
+ ut_asserteq_strn(name, (char *)ptr + 0x18);
+
+ ut_asserteq(POWER_RES_OP, ptr[0x1d]);
+ ut_asserteq_strn(name, (char *)ptr + 0x21);
+ ut_asserteq(level, ptr[0x25]);
+ ut_asserteq(order, get_unaligned((u16 *)(ptr + 0x26)));
+
+ /* The length is not set - caller must use acpigen_pop_len() */
+ ut_asserteq(1, ctx->ltop);
+
+ free_context(&ctx);
+
+ return 0;
+}
+DM_TEST(dm_test_acpi_power_res, 0);