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acpi: Export functions to write sized values

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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>
This commit is contained in:
Simon Glass 2020-07-07 21:32:09 -06:00 committed by Bin Meng
parent b4e8433418
commit fea9651084
2 changed files with 89 additions and 1 deletions
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46
include/acpi/acpigen.h
View file

@ -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
*

44
test/dm/acpigen.c
View file

@ -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);