From: Sunil V L <sunilvl@xxxxxxxxxxxxxxxx>
Add ACPI support for the RISC-V SBI message proxy (MPXY) based
mailbox driver.
Signed-off-by: Sunil V L <sunilvl@xxxxxxxxxxxxxxxx>
Signed-off-by: Anup Patel <apatel@xxxxxxxxxxxxxxxx>
---
drivers/mailbox/riscv-sbi-mpxy-mbox.c | 25 ++++++++++++++++++++++++-
1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/drivers/mailbox/riscv-sbi-mpxy-mbox.c b/drivers/mailbox/riscv-sbi-mpxy-mbox.c
index 4021f62ff487..0ce89970c5bd 100644
--- a/drivers/mailbox/riscv-sbi-mpxy-mbox.c
+++ b/drivers/mailbox/riscv-sbi-mpxy-mbox.c
@@ -5,6 +5,7 @@
* Copyright (C) 2024 Ventana Micro Systems Inc.
*/
+#include <linux/acpi.h>
#include <asm/sbi.h>
#include <linux/cpu.h>
#include <linux/err.h>
@@ -12,6 +13,7 @@
#include <linux/jump_label.h>
#include <linux/kernel.h>
#include <linux/mailbox_controller.h>
+#include <linux/irqchip/riscv-imsic.h>
#include <linux/mailbox/riscv-rpmi-message.h>
#include <linux/mm.h>
#include <linux/module.h>
@@ -924,8 +926,16 @@ static int mpxy_mbox_probe(struct platform_device *pdev)
* then we need to set it explicitly before using any platform
* MSI functions.
*/
- if (is_of_node(dev->fwnode))
+ if (is_of_node(dev->fwnode)) {
of_msi_configure(dev, to_of_node(dev->fwnode));
+ } else {
+ struct irq_domain *msi_domain;
+
+ msi_domain = irq_find_matching_fwnode(imsic_acpi_get_fwnode(dev),
+ DOMAIN_BUS_PLATFORM_MSI);
+ if (msi_domain)
+ dev_set_msi_domain(dev, msi_domain);
+ }
}
/* Setup MSIs for mailbox (if required) */
@@ -970,6 +980,10 @@ static int mpxy_mbox_probe(struct platform_device *pdev)
return rc;
}
+#ifdef CONFIG_ACPI
+ if (!acpi_disabled)
+ acpi_dev_clear_dependencies(ACPI_COMPANION(dev));
+#endif
dev_info(dev, "mailbox registered with %d channels\n",
mbox->channel_count);
return 0;
@@ -989,10 +1003,19 @@ static const struct of_device_id mpxy_mbox_of_match[] = {
};
MODULE_DEVICE_TABLE(of, mpxy_mbox_of_match);
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id mpxy_mbox_acpi_match[] = {
+ { "RSCV0005", 0 },
+ {}
+};
+MODULE_DEVICE_TABLE(acpi, mpxy_mbox_acpi_match);
+#endif
+
static struct platform_driver mpxy_mbox_driver = {
.driver = {
.name = "riscv-sbi-mpxy-mbox",
.of_match_table = mpxy_mbox_of_match,
+ .acpi_match_table = ACPI_PTR(mpxy_mbox_acpi_match),
},
.probe = mpxy_mbox_probe,
.remove = mpxy_mbox_remove,
--
2.43.0
