Commit cd057667 authored by Jianmin Lv's avatar Jianmin Lv Committed by Marc Zyngier
Browse files

LoongArch: Use ACPI_GENERIC_GSI for gsi handling 



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: default avatarJianmin Lv <lvjianmin@loongson.cn>
Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/1658314292-35346-6-git-send-email-lvjianmin@loongson.cn
parent d319a299

arch/loongarch/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -2,6 +2,7 @@ 
config LOONGARCH

	bool

	default y

	select ACPI_GENERIC_GSI if ACPI

	select ACPI_SYSTEM_POWER_STATES_SUPPORT	if ACPI

	select ARCH_BINFMT_ELF_STATE

	select ARCH_ENABLE_MEMORY_HOTPLUG

arch/loongarch/kernel/acpi.c

+0 −65
Original line number Diff line number Diff line
@@ -25,7 +25,6 @@ EXPORT_SYMBOL(acpi_pci_disabled); 
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 @@ u64 acpi_saved_sp; 


#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)

{