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u-boot/drivers/misc/irq_sandbox.c

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sandbox: Add a test for IRQ Add a simple sandbox test for this uclass. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-12-07 04:41:59 +00:00
// SPDX-License-Identifier: GPL-2.0
/*
* Sandbox driver for interrupts
*
* Copyright 2019 Google LLC
*/
#include <common.h>
#include <dm.h>
#include <irq.h>
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>
2020-07-07 19:11:41 +00:00
#include <acpi/acpi_device.h>
irq: Tidy up of-platdata irq support This function is available but not exported. More generally it does not really work as intended. Reimplement it and add a sandbox test too. Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-07 13:24:11 +00:00
#include <asm/irq.h>
dm: irq: Add support for requesting interrupts At present driver model supports the IRQ uclass but there is no way to request a particular interrupt for a driver. Add a mechanism, similar to clock and reset, to read the interrupts required by a device from the device tree and to request those interrupts. U-Boot itself does not have interrupt-driven handlers, so just provide a means to read and clear an interrupt. This can be useful to handle peripherals which must use an interrupt to determine when data is available, for example. Bring over the basic binding file as well, from Linux v5.4. Note that the older binding is not supported in U-Boot; the newer 'special form' must be used. Add a simple test of the new functionality. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-02-06 16:55:00 +00:00
#include <asm/test.h>
sandbox: Add a test for IRQ Add a simple sandbox test for this uclass. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-12-07 04:41:59 +00:00
static int sandbox_set_polarity(struct udevice *dev, uint irq, bool active_low)
{
if (irq > 10)
return -EINVAL;
return 0;
}
static int sandbox_route_pmc_gpio_gpe(struct udevice *dev, uint pmc_gpe_num)
{
if (pmc_gpe_num > 10)
return -ENOENT;
return pmc_gpe_num + 1;
}
static int sandbox_snapshot_polarities(struct udevice *dev)
{
return 0;
}
static int sandbox_restore_polarities(struct udevice *dev)
{
return 0;
}
dm: irq: Add support for requesting interrupts At present driver model supports the IRQ uclass but there is no way to request a particular interrupt for a driver. Add a mechanism, similar to clock and reset, to read the interrupts required by a device from the device tree and to request those interrupts. U-Boot itself does not have interrupt-driven handlers, so just provide a means to read and clear an interrupt. This can be useful to handle peripherals which must use an interrupt to determine when data is available, for example. Bring over the basic binding file as well, from Linux v5.4. Note that the older binding is not supported in U-Boot; the newer 'special form' must be used. Add a simple test of the new functionality. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-02-06 16:55:00 +00:00
static int sandbox_irq_read_and_clear(struct irq *irq)
{
struct sandbox_irq_priv *priv = dev_get_priv(irq->dev);
if (irq->id != SANDBOX_IRQN_PEND)
return -EINVAL;
priv->count++;
if (priv->pending) {
priv->pending = false;
return 1;
}
if (!(priv->count % 3))
priv->pending = true;
return 0;
}
static int sandbox_irq_of_xlate(struct irq *irq,
struct ofnode_phandle_args *args)
{
irq->id = args->args[0];
return 0;
}
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>
2020-07-07 19:11:41 +00:00
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;
}
sandbox: Add a test for IRQ Add a simple sandbox test for this uclass. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-12-07 04:41:59 +00:00
static const struct irq_ops sandbox_irq_ops = {
.route_pmc_gpio_gpe = sandbox_route_pmc_gpio_gpe,
.set_polarity = sandbox_set_polarity,
.snapshot_polarities = sandbox_snapshot_polarities,
.restore_polarities = sandbox_restore_polarities,
dm: irq: Add support for requesting interrupts At present driver model supports the IRQ uclass but there is no way to request a particular interrupt for a driver. Add a mechanism, similar to clock and reset, to read the interrupts required by a device from the device tree and to request those interrupts. U-Boot itself does not have interrupt-driven handlers, so just provide a means to read and clear an interrupt. This can be useful to handle peripherals which must use an interrupt to determine when data is available, for example. Bring over the basic binding file as well, from Linux v5.4. Note that the older binding is not supported in U-Boot; the newer 'special form' must be used. Add a simple test of the new functionality. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-02-06 16:55:00 +00:00
.read_and_clear = sandbox_irq_read_and_clear,
.of_xlate = sandbox_irq_of_xlate,
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>
2020-07-07 19:11:41 +00:00
#if CONFIG_IS_ENABLED(ACPIGEN)
.get_acpi = sandbox_get_acpi,
#endif
sandbox: Add a test for IRQ Add a simple sandbox test for this uclass. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-12-07 04:41:59 +00:00
};
static const struct udevice_id sandbox_irq_ids[] = {
dm: irq: Add support for interrupt controller types There can be different types of interrupt controllers in a system and some drivers may need to distinguish between these. In general this can be handled using the device tree by adding the interrupt information to device nodes. However on x86 devices we have interrupt controllers which are not tied to any particular device and not really used in U-Boot. These still need to be inited, so a convenient method is to give each controller a type and allow a particular controller type to be probed. Add support for this in sandbox along with a test. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> [bmeng: remove the new bland line at EOF of test/dm/irq.c] Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2020-02-06 16:54:57 +00:00
{ .compatible = "sandbox,irq", SANDBOX_IRQT_BASE },
sandbox: Add a test for IRQ Add a simple sandbox test for this uclass. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-12-07 04:41:59 +00:00
{ }
};
irq: Tidy up of-platdata irq support This function is available but not exported. More generally it does not really work as intended. Reimplement it and add a sandbox test too. Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-07 13:24:11 +00:00
U_BOOT_DRIVER(sandbox_irq) = {
sandbox: Add a test for IRQ Add a simple sandbox test for this uclass. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-12-07 04:41:59 +00:00
.name = "sandbox_irq",
.id = UCLASS_IRQ,
.of_match = sandbox_irq_ids,
.ops = &sandbox_irq_ops,
dm: treewide: Rename auto_alloc_size members to be shorter This construct is quite long-winded. In earlier days it made some sense since auto-allocation was a strange concept. But with driver model now used pretty universally, we can shorten this to 'auto'. This reduces verbosity and makes it easier to read. Coincidentally it also ensures that every declaration is on one line, thus making dtoc's job easier. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-03 23:55:17 +00:00
.priv_auto = sizeof(struct sandbox_irq_priv),
irq: Tidy up of-platdata irq support This function is available but not exported. More generally it does not really work as intended. Reimplement it and add a sandbox test too. Signed-off-by: Simon Glass <sjg@chromium.org>
2021-08-07 13:24:11 +00:00
DM_HEADER(<asm/irq.h>)
sandbox: Add a test for IRQ Add a simple sandbox test for this uclass. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-12-07 04:41:59 +00:00
};
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