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Date: Wed, 16 Dec 2015 16:48:02 +0100
From: Igor Mammedov <imammedo@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH v5 04/10] ARM: ACPI: Add GPIO controller in
 ACPI DSDT table
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To: Shannon Zhao <zhaoshenglong@huawei.com>
Cc: wei@redhat.com, peter.maydell@linaro.org, graeme.gregory@linaro.org, mst@redhat.com, qemu-devel@nongnu.org, peter.huangpeng@huawei.com, qemu-arm@nongnu.org, shannon.zhao@linaro.org

On Fri, 11 Dec 2015 11:21:20 +0800
Shannon Zhao <zhaoshenglong@huawei.com> wrote:

> 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>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>

> ---
>  hw/arm/virt-acpi-build.c | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
> 
> diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
> index 1deebfe..fcc08f7 100644
> --- a/hw/arm/virt-acpi-build.c
> +++ b/hw/arm/virt-acpi-build.c
> @@ -324,6 +324,23 @@ static void acpi_dsdt_add_pci(Aml *scope, const
> MemMapEntry *memmap, aml_append(scope, dev);
>  }
>  
> +static void acpi_dsdt_add_gpio(Aml *scope, const MemMapEntry
> *gpio_memmap,
> +                                           uint32_t 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, 1));
> +    aml_append(dev, aml_name_decl("_CRS", crs));
> +    aml_append(scope, dev);
> +}
> +
>  /* RSDP */
>  static GArray *
>  build_rsdp(GArray *rsdp_table, GArray *linker, unsigned rsdt)
> @@ -540,6 +557,8 @@ 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);
>