diff options
| author | Simon Glass <sjg@chromium.org> | 2020-07-07 13:11:41 -0600 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2020-07-17 14:32:24 +0800 |
| commit | f4955137f5f15e615376cf38559414a9b53e3d55 (patch) | |
| tree | 699167d9e3cc6cae0fae4a0ddeb4b335c05786aa /drivers/misc | |
| parent | 2715b3623c08bf1ad2dfe6076ad86c24e3138016 (diff) | |
irq: Add a method to convert an interrupt to ACPI
When generating ACPI tables we need to convert IRQs in U-Boot to the ACPI
structures required by ACPI. This is a SoC-specific conversion and cannot
be handled by generic code, so add a new IRQ method to do the conversion.
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>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/irq-uclass.c | 18 | ||||
| -rw-r--r-- | drivers/misc/irq_sandbox.c | 16 |
2 files changed, 32 insertions, 2 deletions
diff --git a/drivers/misc/irq-uclass.c b/drivers/misc/irq-uclass.c index ec70866cc3..8727a33dd9 100644 --- a/drivers/misc/irq-uclass.c +++ b/drivers/misc/irq-uclass.c @@ -152,8 +152,6 @@ int irq_request(struct udevice *dev, struct irq *irq) const struct irq_ops *ops; log_debug("(dev=%p, irq=%p)\n", dev, irq); - if (!irq) - return 0; ops = irq_get_ops(dev); irq->dev = dev; @@ -175,6 +173,22 @@ int irq_first_device_type(enum irq_dev_t type, struct udevice **devp) return 0; } +#if CONFIG_IS_ENABLED(ACPIGEN) +int irq_get_acpi(const struct irq *irq, struct acpi_irq *acpi_irq) +{ + struct irq_ops *ops; + + if (!irq_is_valid(irq)) + return -EINVAL; + + ops = irq_get_ops(irq->dev); + if (!ops->get_acpi) + return -ENOSYS; + + return ops->get_acpi(irq, acpi_irq); +} +#endif + UCLASS_DRIVER(irq) = { .id = UCLASS_IRQ, .name = "irq", diff --git a/drivers/misc/irq_sandbox.c b/drivers/misc/irq_sandbox.c index 54bc47c8d8..a2511b32fc 100644 --- a/drivers/misc/irq_sandbox.c +++ b/drivers/misc/irq_sandbox.c @@ -8,6 +8,7 @@ #include <common.h> #include <dm.h> #include <irq.h> +#include <acpi/acpi_device.h> #include <asm/test.h> /** @@ -73,6 +74,18 @@ static int sandbox_irq_of_xlate(struct irq *irq, return 0; } +static __maybe_unused int sandbox_get_acpi(const struct irq *irq, + struct acpi_irq *acpi_irq) +{ + acpi_irq->pin = irq->id; + acpi_irq->mode = ACPI_IRQ_LEVEL_TRIGGERED; + acpi_irq->polarity = ACPI_IRQ_ACTIVE_HIGH; + acpi_irq->shared = ACPI_IRQ_SHARED; + acpi_irq->wake = ACPI_IRQ_WAKE; + + return 0; +} + static const struct irq_ops sandbox_irq_ops = { .route_pmc_gpio_gpe = sandbox_route_pmc_gpio_gpe, .set_polarity = sandbox_set_polarity, @@ -80,6 +93,9 @@ static const struct irq_ops sandbox_irq_ops = { .restore_polarities = sandbox_restore_polarities, .read_and_clear = sandbox_irq_read_and_clear, .of_xlate = sandbox_irq_of_xlate, +#if CONFIG_IS_ENABLED(ACPIGEN) + .get_acpi = sandbox_get_acpi, +#endif }; static const struct udevice_id sandbox_irq_ids[] = { |