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    Subject[PATCH V16 05/14] LoongArch: Use ACPI_GENERIC_GSI for gsi handling
    Date
    For LoongArch, generic gsi code(driver/acpi/irq.c) can be
    reused after following patchs:

    APCI: irq: Add support for multiple GSI domains
    ACPI: irq: Allow acpi_gsi_to_irq() to have an arch-specific fallback

    So, config ACPI_GENERIC_GSI for LoongArch with removing the gsi code
    in arch directory.

    Signed-off-by: Jianmin Lv <lvjianmin@loongson.cn>
    ---
    arch/loongarch/Kconfig | 1 +
    arch/loongarch/kernel/acpi.c | 65 --------------------------------------------
    2 files changed, 1 insertion(+), 65 deletions(-)

    diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
    index 1920d52..7f98fc0 100644
    --- a/arch/loongarch/Kconfig
    +++ b/arch/loongarch/Kconfig
    @@ -112,6 +112,7 @@ config LOONGARCH
    select TRACE_IRQFLAGS_SUPPORT
    select USE_PERCPU_NUMA_NODE_ID
    select ZONE_DMA32
    + select ACPI_GENERIC_GSI if ACPI

    config 32BIT
    bool
    diff --git a/arch/loongarch/kernel/acpi.c b/arch/loongarch/kernel/acpi.c
    index bb729ee..03aa145 100644
    --- a/arch/loongarch/kernel/acpi.c
    +++ b/arch/loongarch/kernel/acpi.c
    @@ -25,7 +25,6 @@
    int acpi_strict = 1; /* We have no workarounds on LoongArch */
    int num_processors;
    int disabled_cpus;
    -enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PLATFORM;

    u64 acpi_saved_sp;

    @@ -33,70 +32,6 @@

    #define PREFIX "ACPI: "

    -int acpi_gsi_to_irq(u32 gsi, unsigned int *irqp)
    -{
    - if (irqp != NULL)
    - *irqp = acpi_register_gsi(NULL, gsi, -1, -1);
    - return (*irqp >= 0) ? 0 : -EINVAL;
    -}
    -EXPORT_SYMBOL_GPL(acpi_gsi_to_irq);
    -
    -int acpi_isa_irq_to_gsi(unsigned int isa_irq, u32 *gsi)
    -{
    - if (gsi)
    - *gsi = isa_irq;
    - return 0;
    -}
    -
    -/*
    - * success: return IRQ number (>=0)
    - * failure: return < 0
    - */
    -int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity)
    -{
    - struct irq_fwspec fwspec;
    -
    - switch (gsi) {
    - case GSI_MIN_CPU_IRQ ... GSI_MAX_CPU_IRQ:
    - fwspec.fwnode = liointc_domain->fwnode;
    - fwspec.param[0] = gsi - GSI_MIN_CPU_IRQ;
    - fwspec.param_count = 1;
    -
    - return irq_create_fwspec_mapping(&fwspec);
    -
    - case GSI_MIN_LPC_IRQ ... GSI_MAX_LPC_IRQ:
    - if (!pch_lpc_domain)
    - return -EINVAL;
    -
    - fwspec.fwnode = pch_lpc_domain->fwnode;
    - fwspec.param[0] = gsi - GSI_MIN_LPC_IRQ;
    - fwspec.param[1] = acpi_dev_get_irq_type(trigger, polarity);
    - fwspec.param_count = 2;
    -
    - return irq_create_fwspec_mapping(&fwspec);
    -
    - case GSI_MIN_PCH_IRQ ... GSI_MAX_PCH_IRQ:
    - if (!pch_pic_domain[0])
    - return -EINVAL;
    -
    - fwspec.fwnode = pch_pic_domain[0]->fwnode;
    - fwspec.param[0] = gsi - GSI_MIN_PCH_IRQ;
    - fwspec.param[1] = IRQ_TYPE_LEVEL_HIGH;
    - fwspec.param_count = 2;
    -
    - return irq_create_fwspec_mapping(&fwspec);
    - }
    -
    - return -EINVAL;
    -}
    -EXPORT_SYMBOL_GPL(acpi_register_gsi);
    -
    -void acpi_unregister_gsi(u32 gsi)
    -{
    -
    -}
    -EXPORT_SYMBOL_GPL(acpi_unregister_gsi);
    -
    void __init __iomem * __acpi_map_table(unsigned long phys, unsigned long size)
    {

    --
    1.8.3.1
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