acpi: Export functions to write sized values

At present only acpigen_write_integer() is exported for use by other code.
But in some cases it is useful to call the specific function depending on
the size of the value.

Export these functions and add a test.

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>
[bmeng: Fix the "new blank line at EOF" warning]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

diff --git a/include/acpi/acpigen.h b/include/acpi/acpigen.h
index d06d2c0c7313507cc0e62e8e7e31da9d8d5fe0fc..c6644bc2b239da8c08cefa211eb48c214e590928 100644 (file)
--- a/include/acpi/acpigen.h
+++ b/include/acpi/acpigen.h
@@ -172,6 +172,52 @@ void acpigen_pop_len(struct acpi_ctx *ctx);
  */
 char *acpigen_write_package(struct acpi_ctx *ctx, int nr_el);
 
+/**
+ * acpigen_write_byte() - Write a byte
+ *
+ * @ctx: ACPI context pointer
+ * @data: Value to write
+ */
+void acpigen_write_byte(struct acpi_ctx *ctx, unsigned int data);
+
+/**
+ * acpigen_write_word() - Write a word
+ *
+ * @ctx: ACPI context pointer
+ * @data: Value to write
+ */
+void acpigen_write_word(struct acpi_ctx *ctx, unsigned int data);
+
+/**
+ * acpigen_write_dword() - Write a dword
+ *
+ * @ctx: ACPI context pointer
+ * @data: Value to write
+ */
+void acpigen_write_dword(struct acpi_ctx *ctx, unsigned int data);
+
+/**
+ * acpigen_write_qword() - Write a qword
+ *
+ * @ctx: ACPI context pointer
+ * @data: Value to write
+ */
+void acpigen_write_qword(struct acpi_ctx *ctx, u64 data);
+
+/**
+ * acpigen_write_zero() - Write zero
+ *
+ * @ctx: ACPI context pointer
+ */
+void acpigen_write_zero(struct acpi_ctx *ctx);
+
+/**
+ * acpigen_write_one() - Write one
+ *
+ * @ctx: ACPI context pointer
+ */
+void acpigen_write_one(struct acpi_ctx *ctx);
+
 /**
  * acpigen_write_integer() - Write an integer
  *

diff --git a/test/dm/acpigen.c b/test/dm/acpigen.c
index 9e7a928b2495965b5745839c978893b9099dafd4..f25be938a47485b1a2012e115a89e15f2b3dc7ad 100644 (file)
--- a/test/dm/acpigen.c
+++ b/test/dm/acpigen.c
@@ -872,5 +872,47 @@ static int dm_test_acpi_power_seq(struct unit_test_state *uts)
 
        return 0;
 }
-
 DM_TEST(dm_test_acpi_power_seq, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+/* Test writing values */
+static int dm_test_acpi_write_values(struct unit_test_state *uts)
+{
+       struct acpi_ctx *ctx;
+       u8 *ptr;
+
+       ut_assertok(alloc_context(&ctx));
+       ptr = acpigen_get_current(ctx);
+
+       acpigen_write_zero(ctx);
+       acpigen_write_one(ctx);
+       acpigen_write_byte(ctx, TEST_INT8);
+       acpigen_write_word(ctx, TEST_INT16);
+       acpigen_write_dword(ctx, TEST_INT32);
+       acpigen_write_qword(ctx, TEST_INT64);
+
+       ut_asserteq(ZERO_OP, *ptr++);
+
+       ut_asserteq(ONE_OP, *ptr++);
+
+       ut_asserteq(BYTE_PREFIX, *ptr++);
+       ut_asserteq(TEST_INT8, *ptr++);
+
+       ut_asserteq(WORD_PREFIX, *ptr++);
+       ut_asserteq(TEST_INT16, get_unaligned((u16 *)ptr));
+       ptr += 2;
+
+       ut_asserteq(DWORD_PREFIX, *ptr++);
+       ut_asserteq(TEST_INT32, get_unaligned((u32 *)ptr));
+       ptr += 4;
+
+       ut_asserteq(QWORD_PREFIX, *ptr++);
+       ut_asserteq_64(TEST_INT64, get_unaligned((u64 *)ptr));
+       ptr += 8;
+
+       ut_asserteq_ptr(ptr, ctx->current);
+
+       free_context(&ctx);
+
+       return 0;
+}
+DM_TEST(dm_test_acpi_write_values, 0);