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Wysocki" , Mika Westerberg , Andy Shevchenko , Linus Walleij , Bartosz Golaszewski , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Cc: Palmer Dabbelt , Paul Walmsley , Len Brown , Sunil V L , Rahul Pathak , Leyfoon Tan , Atish Patra , Andrew Jones , Samuel Holland , Anup Patel , linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Anup Patel Subject: [PATCH v4 20/23] mailbox/riscv-sbi-mpxy: Add ACPI support Date: Sun, 25 May 2025 14:17:07 +0530 Message-ID: <20250525084710.1665648-21-apatel@ventanamicro.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250525084710.1665648-1-apatel@ventanamicro.com> References: <20250525084710.1665648-1-apatel@ventanamicro.com> Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Sunil V L Add ACPI support for the RISC-V SBI message proxy (MPXY) based mailbox driver. Signed-off-by: Sunil V L Signed-off-by: Anup Patel --- drivers/mailbox/riscv-sbi-mpxy-mbox.c | 28 +++++++++++++++++++++++++-- 1 file changed, 26 insertions(+), 2 deletions(-) diff --git a/drivers/mailbox/riscv-sbi-mpxy-mbox.c b/drivers/mailbox/riscv-sbi-mpxy-mbox.c index 121ee5fd3d0d..3d71af6321c3 100644 --- a/drivers/mailbox/riscv-sbi-mpxy-mbox.c +++ b/drivers/mailbox/riscv-sbi-mpxy-mbox.c @@ -6,9 +6,11 @@ */ #include +#include #include #include #include +#include #include #include #include @@ -767,6 +769,7 @@ static int mpxy_mbox_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct mpxy_mbox_channel *mchan; + struct irq_domain *msi_domain; struct mpxy_mbox *mbox; int i, msi_idx, rc; u32 *channel_ids; @@ -892,6 +895,8 @@ static int mpxy_mbox_probe(struct platform_device *pdev) /* Set the MSI domain if not available */ if (!dev_get_msi_domain(dev)) { + struct fwnode_handle *fwnode = dev_fwnode(dev); + /* * The device MSI domain for OF devices is only set at the * time of populating/creating OF device. If the device MSI @@ -899,8 +904,13 @@ 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(dev))) - of_msi_configure(dev, to_of_node(dev_fwnode(dev))); + if (is_of_node(fwnode)) { + of_msi_configure(dev, to_of_node(fwnode)); + } else if (is_acpi_device_node(fwnode)) { + msi_domain = irq_find_matching_fwnode(imsic_acpi_get_fwnode(dev), + DOMAIN_BUS_PLATFORM_MSI); + dev_set_msi_domain(dev, msi_domain); + } } /* Setup MSIs for mailbox (if required) */ @@ -945,6 +955,13 @@ static int mpxy_mbox_probe(struct platform_device *pdev) return rc; } +#ifdef CONFIG_ACPI + struct acpi_device *adev = ACPI_COMPANION(dev); + + if (adev) + acpi_dev_clear_dependencies(adev); +#endif + dev_info(dev, "mailbox registered with %d channels\n", mbox->channel_count); return 0; @@ -964,10 +981,17 @@ static const struct of_device_id mpxy_mbox_of_match[] = { }; MODULE_DEVICE_TABLE(of, mpxy_mbox_of_match); +static const struct acpi_device_id mpxy_mbox_acpi_match[] = { + { "RSCV0005" }, + {} +}; +MODULE_DEVICE_TABLE(acpi, mpxy_mbox_acpi_match); + static struct platform_driver mpxy_mbox_driver = { .driver = { .name = "riscv-sbi-mpxy-mbox", .of_match_table = mpxy_mbox_of_match, + .acpi_match_table = mpxy_mbox_acpi_match, }, .probe = mpxy_mbox_probe, .remove = mpxy_mbox_remove, -- 2.43.0