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31e1787ec1
Add a function to write a GPIO 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>
310 lines
8.5 KiB
C
310 lines
8.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Tests for ACPI code generation
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*
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* Copyright 2019 Google LLC
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#include <common.h>
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#include <dm.h>
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#include <irq.h>
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#include <malloc.h>
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#include <acpi/acpigen.h>
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#include <acpi/acpi_device.h>
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#include <asm/gpio.h>
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#include <asm/unaligned.h>
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#include <dm/acpi.h>
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#include <dm/test.h>
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#include <dm/uclass-internal.h>
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#include <test/ut.h>
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/* Maximum size of the ACPI context needed for most tests */
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#define ACPI_CONTEXT_SIZE 150
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#define TEST_STRING "frogmore"
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#define TEST_STREAM2 "\xfa\xde"
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static int alloc_context(struct acpi_ctx **ctxp)
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{
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struct acpi_ctx *ctx;
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*ctxp = NULL;
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ctx = malloc(sizeof(*ctx));
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if (!ctx)
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return -ENOMEM;
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ctx->base = malloc(ACPI_CONTEXT_SIZE);
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if (!ctx->base) {
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free(ctx);
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return -ENOMEM;
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}
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ctx->current = ctx->base;
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*ctxp = ctx;
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return 0;
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}
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static void free_context(struct acpi_ctx **ctxp)
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{
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free((*ctxp)->base);
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free(*ctxp);
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*ctxp = NULL;
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}
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/* Test emitting simple types and acpigen_get_current() */
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static int dm_test_acpi_emit_simple(struct unit_test_state *uts)
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{
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struct acpi_ctx *ctx;
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u8 *ptr;
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ut_assertok(alloc_context(&ctx));
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ptr = acpigen_get_current(ctx);
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acpigen_emit_byte(ctx, 0x23);
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ut_asserteq(1, acpigen_get_current(ctx) - ptr);
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ut_asserteq(0x23, *(u8 *)ptr);
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acpigen_emit_word(ctx, 0x1234);
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ut_asserteq(3, acpigen_get_current(ctx) - ptr);
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ut_asserteq(0x1234, get_unaligned((u16 *)(ptr + 1)));
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acpigen_emit_dword(ctx, 0x87654321);
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ut_asserteq(7, acpigen_get_current(ctx) - ptr);
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ut_asserteq(0x87654321, get_unaligned((u32 *)(ptr + 3)));
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free_context(&ctx);
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return 0;
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}
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DM_TEST(dm_test_acpi_emit_simple, 0);
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/* Test emitting a stream */
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static int dm_test_acpi_emit_stream(struct unit_test_state *uts)
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{
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struct acpi_ctx *ctx;
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u8 *ptr;
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ut_assertok(alloc_context(&ctx));
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ptr = acpigen_get_current(ctx);
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acpigen_emit_stream(ctx, TEST_STREAM2, 2);
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ut_asserteq(2, acpigen_get_current(ctx) - ptr);
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ut_asserteq((u8)TEST_STREAM2[0], ptr[0]);
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ut_asserteq((u8)TEST_STREAM2[1], ptr[1]);
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free_context(&ctx);
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return 0;
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}
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DM_TEST(dm_test_acpi_emit_stream, 0);
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/* Test emitting a string */
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static int dm_test_acpi_emit_string(struct unit_test_state *uts)
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{
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struct acpi_ctx *ctx;
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u8 *ptr;
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ut_assertok(alloc_context(&ctx));
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ptr = acpigen_get_current(ctx);
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acpigen_emit_string(ctx, TEST_STRING);
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ut_asserteq(sizeof(TEST_STRING), acpigen_get_current(ctx) - ptr);
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ut_asserteq_str(TEST_STRING, (char *)ptr);
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free_context(&ctx);
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return 0;
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}
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DM_TEST(dm_test_acpi_emit_string, 0);
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/* Test emitting an interrupt descriptor */
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static int dm_test_acpi_interrupt(struct unit_test_state *uts)
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{
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struct acpi_ctx *ctx;
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struct udevice *dev;
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struct irq irq;
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u8 *ptr;
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ut_assertok(alloc_context(&ctx));
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ptr = acpigen_get_current(ctx);
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ut_assertok(uclass_first_device_err(UCLASS_TEST_FDT, &dev));
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ut_assertok(irq_get_by_index(dev, 0, &irq));
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/* See a-test, property interrupts-extended in the device tree */
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ut_asserteq(3, acpi_device_write_interrupt_irq(ctx, &irq));
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ut_asserteq(9, acpigen_get_current(ctx) - ptr);
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ut_asserteq(ACPI_DESCRIPTOR_INTERRUPT, ptr[0]);
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ut_asserteq(6, get_unaligned((u16 *)(ptr + 1)));
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ut_asserteq(0x19, ptr[3]);
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ut_asserteq(1, ptr[4]);
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ut_asserteq(3, get_unaligned((u32 *)(ptr + 5)));
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free_context(&ctx);
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return 0;
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}
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DM_TEST(dm_test_acpi_interrupt, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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/* Test emitting a GPIO descriptor */
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static int dm_test_acpi_gpio(struct unit_test_state *uts)
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{
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struct gpio_desc desc;
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struct acpi_ctx *ctx;
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struct udevice *dev;
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u8 *ptr;
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ut_assertok(alloc_context(&ctx));
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ptr = acpigen_get_current(ctx);
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ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
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ut_asserteq_str("a-test", dev->name);
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ut_assertok(gpio_request_by_name(dev, "test-gpios", 1, &desc, 0));
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/* This should write GPIO pin 4 (see device tree test.dts ) */
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ut_asserteq(4, acpi_device_write_gpio_desc(ctx, &desc));
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ut_asserteq(35, acpigen_get_current(ctx) - ptr);
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ut_asserteq(ACPI_DESCRIPTOR_GPIO, ptr[0]);
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ut_asserteq(32, get_unaligned((u16 *)(ptr + 1)));
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ut_asserteq(ACPI_GPIO_REVISION_ID, ptr[3]);
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ut_asserteq(ACPI_GPIO_TYPE_IO, ptr[4]);
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ut_asserteq(1, get_unaligned((u16 *)(ptr + 5)));
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ut_asserteq(9, get_unaligned((u16 *)(ptr + 7)));
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ut_asserteq(ACPI_GPIO_PULL_UP, ptr[9]);
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ut_asserteq(1234, get_unaligned((u16 *)(ptr + 10)));
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ut_asserteq(0, get_unaligned((u16 *)(ptr + 12)));
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ut_asserteq(23, get_unaligned((u16 *)(ptr + 14)));
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ut_asserteq(0, ptr[16]);
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ut_asserteq(25, get_unaligned((u16 *)(ptr + 17)));
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ut_asserteq(35, get_unaligned((u16 *)(ptr + 19)));
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ut_asserteq(0, get_unaligned((u16 *)(ptr + 21)));
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/* pin0 */
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ut_asserteq(4, get_unaligned((u16 *)(ptr + 23)));
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ut_asserteq_str("\\_SB.PINC", (char *)ptr + 25);
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free_context(&ctx);
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return 0;
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}
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DM_TEST(dm_test_acpi_gpio, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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/* Test emitting a GPIO descriptor with an interrupt */
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static int dm_test_acpi_gpio_irq(struct unit_test_state *uts)
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{
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struct gpio_desc desc;
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struct acpi_ctx *ctx;
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struct udevice *dev;
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u8 *ptr;
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ut_assertok(alloc_context(&ctx));
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ptr = acpigen_get_current(ctx);
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ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
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ut_asserteq_str("a-test", dev->name);
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ut_assertok(gpio_request_by_name(dev, "test2-gpios", 2, &desc, 0));
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/* This should write GPIO pin 6 (see device tree test.dts ) */
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ut_asserteq(6, acpi_device_write_gpio_desc(ctx, &desc));
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ut_asserteq(35, acpigen_get_current(ctx) - ptr);
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ut_asserteq(ACPI_DESCRIPTOR_GPIO, ptr[0]);
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ut_asserteq(32, get_unaligned((u16 *)(ptr + 1)));
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ut_asserteq(ACPI_GPIO_REVISION_ID, ptr[3]);
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ut_asserteq(ACPI_GPIO_TYPE_INTERRUPT, ptr[4]);
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ut_asserteq(1, get_unaligned((u16 *)(ptr + 5)));
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ut_asserteq(29, get_unaligned((u16 *)(ptr + 7)));
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ut_asserteq(ACPI_GPIO_PULL_DOWN, ptr[9]);
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ut_asserteq(0, get_unaligned((u16 *)(ptr + 10)));
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ut_asserteq(4321, get_unaligned((u16 *)(ptr + 12)));
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ut_asserteq(23, get_unaligned((u16 *)(ptr + 14)));
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ut_asserteq(0, ptr[16]);
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ut_asserteq(25, get_unaligned((u16 *)(ptr + 17)));
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ut_asserteq(35, get_unaligned((u16 *)(ptr + 19)));
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ut_asserteq(0, get_unaligned((u16 *)(ptr + 21)));
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/* pin0 */
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ut_asserteq(6, get_unaligned((u16 *)(ptr + 23)));
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ut_asserteq_str("\\_SB.PINC", (char *)ptr + 25);
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free_context(&ctx);
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return 0;
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}
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DM_TEST(dm_test_acpi_gpio_irq, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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/* Test emitting either a GPIO or interrupt descriptor */
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static int dm_test_acpi_interrupt_or_gpio(struct unit_test_state *uts)
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{
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struct acpi_ctx *ctx;
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struct udevice *dev;
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u8 *ptr;
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ut_assertok(alloc_context(&ctx));
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ptr = acpigen_get_current(ctx);
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/* This should produce an interrupt, even though it also has a GPIO */
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ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
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ut_asserteq_str("a-test", dev->name);
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ut_asserteq(3, acpi_device_write_interrupt_or_gpio(ctx, dev,
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"test2-gpios"));
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ut_asserteq(ACPI_DESCRIPTOR_INTERRUPT, ptr[0]);
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/* This has no interrupt so should produce a GPIO */
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ptr = ctx->current;
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ut_assertok(uclass_find_first_device(UCLASS_PANEL_BACKLIGHT, &dev));
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ut_asserteq(1, acpi_device_write_interrupt_or_gpio(ctx, dev,
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"enable-gpios"));
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ut_asserteq(ACPI_DESCRIPTOR_GPIO, ptr[0]);
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/* This one has neither */
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ptr = acpigen_get_current(ctx);
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ut_assertok(uclass_get_device_by_seq(UCLASS_TEST_FDT, 3, &dev));
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ut_asserteq_str("b-test", dev->name);
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ut_asserteq(-ENOENT,
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acpi_device_write_interrupt_or_gpio(ctx, dev,
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"enable-gpios"));
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free_context(&ctx);
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return 0;
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}
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DM_TEST(dm_test_acpi_interrupt_or_gpio,
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DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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/* Test emitting an I2C descriptor */
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static int dm_test_acpi_i2c(struct unit_test_state *uts)
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{
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struct acpi_ctx *ctx;
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struct udevice *dev;
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u8 *ptr;
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ut_assertok(alloc_context(&ctx));
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ptr = acpigen_get_current(ctx);
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ut_assertok(uclass_get_device(UCLASS_RTC, 0, &dev));
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ut_asserteq(0x43, acpi_device_write_i2c_dev(ctx, dev));
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ut_asserteq(28, acpigen_get_current(ctx) - ptr);
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ut_asserteq(ACPI_DESCRIPTOR_SERIAL_BUS, ptr[0]);
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ut_asserteq(25, get_unaligned((u16 *)(ptr + 1)));
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ut_asserteq(ACPI_I2C_SERIAL_BUS_REVISION_ID, ptr[3]);
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ut_asserteq(0, ptr[4]);
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ut_asserteq(ACPI_SERIAL_BUS_TYPE_I2C, ptr[5]);
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ut_asserteq(0, get_unaligned((u16 *)(ptr + 7)));
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ut_asserteq(ACPI_I2C_TYPE_SPECIFIC_REVISION_ID, ptr[9]);
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ut_asserteq(6, get_unaligned((u16 *)(ptr + 10)));
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ut_asserteq(100000, get_unaligned((u32 *)(ptr + 12)));
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ut_asserteq(0x43, get_unaligned((u16 *)(ptr + 16)));
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ut_asserteq_str("\\_SB.I2C0", (char *)ptr + 18);
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free_context(&ctx);
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return 0;
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}
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DM_TEST(dm_test_acpi_i2c, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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