Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932481AbdCGMw0 (ORCPT ); Tue, 7 Mar 2017 07:52:26 -0500 Received: from szxga01-in.huawei.com ([45.249.212.187]:3833 "EHLO dggrg01-dlp.huawei.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1755138AbdCGMva (ORCPT ); Tue, 7 Mar 2017 07:51:30 -0500 From: Hanjun Guo To: Marc Zyngier , "Rafael J. Wysocki" , Lorenzo Pieralisi CC: , , , Thomas Gleixner , Greg KH , Tomasz Nowicki , Ma Jun , Kefeng Wang , Sinan Kaya , , , , Hanjun Guo Subject: [PATCH v9 15/15] irqchip: mbigen: Add ACPI support Date: Tue, 7 Mar 2017 20:40:10 +0800 Message-ID: <1488890410-15503-16-git-send-email-guohanjun@huawei.com> X-Mailer: git-send-email 1.7.12.4 In-Reply-To: <1488890410-15503-1-git-send-email-guohanjun@huawei.com> References: <1488890410-15503-1-git-send-email-guohanjun@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.175.102.37] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020201.58BEAB9E.0391,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2014-11-16 11:51:01, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 0f16b00108b3bf191bad91f6ae03ed09 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4439 Lines: 156 From: Hanjun Guo With the preparation of platform msi support and interrupt producer in DSDT, we can add mbigen ACPI support now. We are using Interrupt resource type in _CRS methd to indicate number of irq pins instead of num_pins in DT to avoid _DSD usage in this case. For mbigen, Device(MBI0) { Name(_HID, "HISI0152") Name(_UID, Zero) Name(_CRS, ResourceTemplate() { Memory32Fixed(ReadWrite, 0xa0080000, 0x10000) Interrupt(ResourceProducer,...) {12,14,....} }) } For devices, Device(COM0) { Name(_HID, "ACPIIDxx") Name(_UID, Zero) Name(_CRS, ResourceTemplate() { Memory32Fixed(ReadWrite, 0xb0030000, 0x10000) Interrupt(ResourceConsumer,..., "\_SB.MBI0") {12} }) } With the help of platform msi and interrupt producer, then devices will get the virq from mbigen's irqdomain. Signed-off-by: Hanjun Guo Cc: Lorenzo Pieralisi Cc: Ma Jun Cc: Marc Zyngier Cc: Thomas Gleixner --- drivers/irqchip/irq-mbigen.c | 70 ++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 67 insertions(+), 3 deletions(-) diff --git a/drivers/irqchip/irq-mbigen.c b/drivers/irqchip/irq-mbigen.c index 3756408..e6bb503 100644 --- a/drivers/irqchip/irq-mbigen.c +++ b/drivers/irqchip/irq-mbigen.c @@ -16,6 +16,7 @@ * along with this program. If not, see . */ +#include #include #include #include @@ -180,7 +181,7 @@ static int mbigen_domain_translate(struct irq_domain *d, unsigned long *hwirq, unsigned int *type) { - if (is_of_node(fwspec->fwnode)) { + if (is_of_node(fwspec->fwnode) || is_acpi_device_node(fwspec->fwnode)) { if (fwspec->param_count != 2) return -EINVAL; @@ -271,6 +272,54 @@ static int mbigen_of_create_domain(struct platform_device *pdev, return 0; } +#ifdef CONFIG_ACPI +static acpi_status mbigen_acpi_process_resource(struct acpi_resource *ares, + void *context) +{ + struct acpi_resource_extended_irq *ext_irq; + u32 *num_irqs = context; + + switch (ares->type) { + case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: + ext_irq = &ares->data.extended_irq; + *num_irqs += ext_irq->interrupt_count; + break; + default: + break; + } + + return AE_OK; +} + +static int mbigen_acpi_create_domain(struct platform_device *pdev, + struct mbigen_device *mgn_chip) +{ + struct irq_domain *domain; + u32 num_msis = 0; + acpi_status status; + + status = acpi_walk_resources(ACPI_HANDLE(&pdev->dev), METHOD_NAME__CRS, + mbigen_acpi_process_resource, &num_msis); + if (ACPI_FAILURE(status) || num_msis == 0) + return -EINVAL; + + domain = platform_msi_create_device_domain(&pdev->dev, num_msis, + mbigen_write_msg, + &mbigen_domain_ops, + mgn_chip); + if (!domain) + return -ENOMEM; + + return 0; +} +#else +static inline int mbigen_acpi_create_domain(struct platform_device *pdev, + struct mbigen_device *mgn_chip) +{ + return -ENODEV; +} +#endif + static int mbigen_device_probe(struct platform_device *pdev) { struct mbigen_device *mgn_chip; @@ -289,9 +338,17 @@ static int mbigen_device_probe(struct platform_device *pdev) if (IS_ERR(mgn_chip->base)) return PTR_ERR(mgn_chip->base); - err = mbigen_of_create_domain(pdev, mgn_chip); - if (err) + if (IS_ENABLED(CONFIG_OF) && pdev->dev.of_node) + err = mbigen_of_create_domain(pdev, mgn_chip); + else if (ACPI_COMPANION(&pdev->dev)) + err = mbigen_acpi_create_domain(pdev, mgn_chip); + else + err = -EINVAL; + + if (err) { + dev_err(&pdev->dev, "Failed to create mbi-gen@%p irqdomain", mgn_chip->base); return err; + } platform_set_drvdata(pdev, mgn_chip); return 0; @@ -303,10 +360,17 @@ static int mbigen_device_probe(struct platform_device *pdev) }; MODULE_DEVICE_TABLE(of, mbigen_of_match); +static const struct acpi_device_id mbigen_acpi_match[] = { + { "HISI0152", 0 }, + {} +}; +MODULE_DEVICE_TABLE(acpi, mbigen_acpi_match); + static struct platform_driver mbigen_platform_driver = { .driver = { .name = "Hisilicon MBIGEN-V2", .of_match_table = mbigen_of_match, + .acpi_match_table = ACPI_PTR(mbigen_acpi_match), }, .probe = mbigen_device_probe, }; -- 1.7.12.4