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[v4,2/8] ARM: ACPI: Add GPIO controller in ACPI DSDT table

Message ID 1449473992-11560-3-git-send-email-zhaoshenglong@huawei.com
State Superseded
Headers show

Commit Message

Shannon Zhao Dec. 7, 2015, 7:39 a.m. UTC 
From: Shannon Zhao <shannon.zhao@linaro.org>


Add GPIO controller in ACPI DSDT table. It can be used for gpio event.

Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com>

Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>

Tested-by: Wei Huang <wei@redhat.com>

---
 hw/arm/virt-acpi-build.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

-- 
2.0.4
diff mbox

Patch

diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index 3c2c5d6..bf6b934 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -323,6 +323,23 @@  static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap, int irq,
     aml_append(scope, dev);
 }
 
+static void acpi_dsdt_add_gpio(Aml *scope, const MemMapEntry *gpio_memmap,
+                                           int gpio_irq)
+{
+    Aml *dev = aml_device("GPO0");
+    aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0061")));
+    aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
+    aml_append(dev, aml_name_decl("_UID", aml_int(0)));
+
+    Aml *crs = aml_resource_template();
+    aml_append(crs, aml_memory32_fixed(gpio_memmap->base, gpio_memmap->size,
+                                       AML_READ_WRITE));
+    aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
+                                  AML_EXCLUSIVE, gpio_irq));
+    aml_append(dev, aml_name_decl("_CRS", crs));
+    aml_append(scope, dev);
+}
+
 /* RSDP */
 static GArray *
 build_rsdp(GArray *rsdp_table, GArray *linker, unsigned rsdt)
@@ -539,6 +556,8 @@  build_dsdt(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info)
                     (irqmap[VIRT_MMIO] + ARM_SPI_BASE), NUM_VIRTIO_TRANSPORTS);
     acpi_dsdt_add_pci(scope, memmap, (irqmap[VIRT_PCIE] + ARM_SPI_BASE),
                       guest_info->use_highmem);
+    acpi_dsdt_add_gpio(scope, &memmap[VIRT_GPIO],
+                       (irqmap[VIRT_GPIO] + ARM_SPI_BASE));
 
     aml_append(dsdt, scope);