MIPS: Loongson64: Make RS780E ACPI as a platform driver (0cfd2440) · Commits · 戴 / test

arch/mips/loongson64/Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -2,7 +2,7 @@
		#
		# Makefile for Loongson-3 family machines
		#
		obj-$(CONFIG_MACH_LOONGSON64) += cop2-ex.o platform.o acpi_init.o dma.o \
		obj-$(CONFIG_MACH_LOONGSON64) += cop2-ex.o platform.o dma.o \
		setup.o init.o env.o time.o reset.o \

		obj-$(CONFIG_SMP) += smp.o

arch/mips/loongson64/pci.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -43,8 +43,6 @@ static int __init pcibios_init(void)

		register_pci_controller(&loongson_pci_controller);

		sbx00_acpi_init();

		return 0;
		}

drivers/platform/mips/Kconfig

+6 −0

Original line number	Diff line number	Diff line
		@@ -24,4 +24,10 @@ config CPU_HWMON
		help
		Loongson-3A/3B CPU Hwmon (temperature sensor) driver.

		config RS780E_ACPI
		bool "Loongson RS780E ACPI Controller"
		depends on MACH_LOONGSON64 \|\| COMPILE_TEST
		help
		Loongson RS780E PCH ACPI Controller driver.

		endif # MIPS_PLATFORM_DEVICES

drivers/platform/mips/Makefile

+1 −0

Original line number	Diff line number	Diff line
		# SPDX-License-Identifier: GPL-2.0-only
		obj-$(CONFIG_CPU_HWMON) += cpu_hwmon.o
		obj-$(CONFIG_RS780E_ACPI) += rs780e-acpi.o

arch/mips/loongson64/acpi_init.c→drivers/platform/mips/rs780e-acpi.c

+38 −20

Original line number	Diff line number	Diff line
		@@ -3,32 +3,23 @@
		#include <linux/init.h>
		#include <linux/ioport.h>
		#include <linux/export.h>
		#include <linux/of.h>
		#include <linux/platform_device.h>

		#define SBX00_ACPI_IO_BASE 0x800
		#define SBX00_ACPI_IO_SIZE 0x100
		static unsigned long acpi_iobase;

		#define ACPI_PM_EVT_BLK (SBX00_ACPI_IO_BASE + 0x00) /* 4 bytes */
		#define ACPI_PM_CNT_BLK (SBX00_ACPI_IO_BASE + 0x04) /* 2 bytes */
		#define ACPI_PMA_CNT_BLK (SBX00_ACPI_IO_BASE + 0x0F) /* 1 byte */
		#define ACPI_PM_TMR_BLK (SBX00_ACPI_IO_BASE + 0x18) /* 4 bytes */
		#define ACPI_GPE0_BLK (SBX00_ACPI_IO_BASE + 0x10) /* 8 bytes */
		#define ACPI_END (SBX00_ACPI_IO_BASE + 0x80)
		#define ACPI_PM_EVT_BLK (acpi_iobase + 0x00) /* 4 bytes */
		#define ACPI_PM_CNT_BLK (acpi_iobase + 0x04) /* 2 bytes */
		#define ACPI_PMA_CNT_BLK (acpi_iobase + 0x0F) /* 1 byte */
		#define ACPI_PM_TMR_BLK (acpi_iobase + 0x18) /* 4 bytes */
		#define ACPI_GPE0_BLK (acpi_iobase + 0x10) /* 8 bytes */
		#define ACPI_END (acpi_iobase + 0x80)

		#define PM_INDEX 0xCD6
		#define PM_DATA 0xCD7
		#define PM2_INDEX 0xCD0
		#define PM2_DATA 0xCD1

		/*
		* SCI interrupt need acpi space, allocate here
		*/

		static int __init register_acpi_resource(void)
		{
		request_region(SBX00_ACPI_IO_BASE, SBX00_ACPI_IO_SIZE, "acpi");
		return 0;
		}

		static void pmio_write_index(u16 index, u8 reg, u8 value)
		{
		outb(reg, index);
		@@ -141,11 +132,38 @@ void acpi_registers_setup(void)
		pm2_iowrite(0xf8, value);
		}

		int __init sbx00_acpi_init(void)
		static int rs780e_acpi_probe(struct platform_device *pdev)
		{
		register_acpi_resource();
		struct resource *res;

		res = platform_get_resource(pdev, IORESOURCE_IO, 0);
		if (!res)
		return -ENODEV;

		/* SCI interrupt need acpi space, allocate here */
		if (!request_region(res->start, resource_size(res), "acpi")) {
		pr_err("RS780E-ACPI: Failed to request IO Region\n");
		return -EBUSY;
		}

		acpi_iobase = res->start;

		acpi_registers_setup();
		acpi_hw_clear_status();

		return 0;
		}

		static const struct of_device_id rs780e_acpi_match[] = {
		{ .compatible = "loongson,rs780e-acpi" },
		{},
		};

		static struct platform_driver rs780e_acpi_driver = {
		.probe = rs780e_acpi_probe,
		.driver = {
		.name = "RS780E-ACPI",
		.of_match_table = rs780e_acpi_match,
		},
		};
		builtin_platform_driver(rs780e_acpi_driver);

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