powerpc: wii: platform support (5a7ee319) · Commits · e / devices / android_kernel_xiaomi_markw

arch/powerpc/platforms/embedded6xx/Kconfig

+8 −0

Original line number	Diff line number	Diff line
		@@ -115,3 +115,11 @@ config GAMECUBE
		Select GAMECUBE if configuring for the Nintendo GameCube.
		More information at: <http://gc-linux.sourceforge.net/>

		config WII
		bool "Nintendo-Wii"
		depends on EMBEDDED6xx
		select GAMECUBE_COMMON
		help
		Select WII if configuring for the Nintendo Wii.
		More information at: <http://gc-linux.sourceforge.net/>

arch/powerpc/platforms/embedded6xx/Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -10,4 +10,4 @@ obj-$(CONFIG_PPC_C2K) += c2k.o
		obj-$(CONFIG_USBGECKO_UDBG) += usbgecko_udbg.o
		obj-$(CONFIG_GAMECUBE_COMMON) += flipper-pic.o
		obj-$(CONFIG_GAMECUBE) += gamecube.o
		obj-$(CONFIG_WII) += hlwd-pic.o
		obj-$(CONFIG_WII) += wii.o hlwd-pic.o

arch/powerpc/platforms/embedded6xx/wii.c

0 → 100644

+202 −0

Original line number	Diff line number	Diff line
		/*
		* arch/powerpc/platforms/embedded6xx/wii.c
		*
		* Nintendo Wii board-specific support
		* Copyright (C) 2008-2009 The GameCube Linux Team
		* Copyright (C) 2008,2009 Albert Herranz
		*
		* This program is free software; you can redistribute it and/or
		* modify it under the terms of the GNU General Public License
		* as published by the Free Software Foundation; either version 2
		* of the License, or (at your option) any later version.
		*
		*/
		#define DRV_MODULE_NAME "wii"
		#define pr_fmt(fmt) DRV_MODULE_NAME ": " fmt

		#include <linux/kernel.h>
		#include <linux/init.h>
		#include <linux/irq.h>
		#include <linux/seq_file.h>
		#include <linux/kexec.h>
		#include <linux/of_platform.h>

		#include <asm/io.h>
		#include <asm/machdep.h>
		#include <asm/prom.h>
		#include <asm/time.h>
		#include <asm/udbg.h>

		#include "flipper-pic.h"
		#include "hlwd-pic.h"
		#include "usbgecko_udbg.h"

		/* control block */
		#define HW_CTRL_COMPATIBLE "nintendo,hollywood-control"

		#define HW_CTRL_RESETS 0x94
		#define HW_CTRL_RESETS_SYS (1<<0)

		/* gpio */
		#define HW_GPIO_COMPATIBLE "nintendo,hollywood-gpio"

		#define HW_GPIO_BASE(idx) (idx * 0x20)
		#define HW_GPIO_OUT(idx) (HW_GPIO_BASE(idx) + 0)
		#define HW_GPIO_DIR(idx) (HW_GPIO_BASE(idx) + 4)

		#define HW_GPIO_SHUTDOWN (1<<1)
		#define HW_GPIO_SLOT_LED (1<<5)
		#define HW_GPIO_SENSOR_BAR (1<<8)


		static void __iomem *hw_ctrl;
		static void __iomem *hw_gpio;

		static void wii_spin(void)
		{
		local_irq_disable();
		for (;;)
		cpu_relax();
		}

		static void __iomem wii_ioremap_hw_regs(char name, char *compatible)
		{
		void __iomem *hw_regs = NULL;
		struct device_node *np;
		struct resource res;
		int error = -ENODEV;

		np = of_find_compatible_node(NULL, NULL, compatible);
		if (!np) {
		pr_err("no compatible node found for %s\n", compatible);
		goto out;
		}
		error = of_address_to_resource(np, 0, &res);
		if (error) {
		pr_err("no valid reg found for %s\n", np->name);
		goto out_put;
		}

		hw_regs = ioremap(res.start, resource_size(&res));
		if (hw_regs) {
		pr_info("%s at 0x%08x mapped to 0x%p\n", name,
		res.start, hw_regs);
		}

		out_put:
		of_node_put(np);
		out:
		return hw_regs;
		}

		static void __init wii_setup_arch(void)
		{
		hw_ctrl = wii_ioremap_hw_regs("hw_ctrl", HW_CTRL_COMPATIBLE);
		hw_gpio = wii_ioremap_hw_regs("hw_gpio", HW_GPIO_COMPATIBLE);
		if (hw_gpio) {
		/* turn off the front blue led and IR light */
		clrbits32(hw_gpio + HW_GPIO_OUT(0),
		HW_GPIO_SLOT_LED \| HW_GPIO_SENSOR_BAR);
		}
		}

		static void wii_restart(char *cmd)
		{
		local_irq_disable();

		if (hw_ctrl) {
		/* clear the system reset pin to cause a reset */
		clrbits32(hw_ctrl + HW_CTRL_RESETS, HW_CTRL_RESETS_SYS);
		}
		wii_spin();
		}

		static void wii_power_off(void)
		{
		local_irq_disable();

		if (hw_gpio) {
		/* make sure that the poweroff GPIO is configured as output */
		setbits32(hw_gpio + HW_GPIO_DIR(1), HW_GPIO_SHUTDOWN);

		/* drive the poweroff GPIO high */
		setbits32(hw_gpio + HW_GPIO_OUT(1), HW_GPIO_SHUTDOWN);
		}
		wii_spin();
		}

		static void wii_halt(void)
		{
		if (ppc_md.restart)
		ppc_md.restart(NULL);
		wii_spin();
		}

		static void __init wii_init_early(void)
		{
		ug_udbg_init();
		}

		static void __init wii_pic_probe(void)
		{
		flipper_pic_probe();
		hlwd_pic_probe();
		}

		static int __init wii_probe(void)
		{
		unsigned long dt_root;

		dt_root = of_get_flat_dt_root();
		if (!of_flat_dt_is_compatible(dt_root, "nintendo,wii"))
		return 0;

		return 1;
		}

		static void wii_shutdown(void)
		{
		hlwd_quiesce();
		flipper_quiesce();
		}

		#ifdef CONFIG_KEXEC
		static int wii_machine_kexec_prepare(struct kimage *image)
		{
		return 0;
		}
		#endif /* CONFIG_KEXEC */

		define_machine(wii) {
		.name = "wii",
		.probe = wii_probe,
		.init_early = wii_init_early,
		.setup_arch = wii_setup_arch,
		.restart = wii_restart,
		.power_off = wii_power_off,
		.halt = wii_halt,
		.init_IRQ = wii_pic_probe,
		.get_irq = flipper_pic_get_irq,
		.calibrate_decr = generic_calibrate_decr,
		.progress = udbg_progress,
		.machine_shutdown = wii_shutdown,
		#ifdef CONFIG_KEXEC
		.machine_kexec_prepare = wii_machine_kexec_prepare,
		#endif
		};

		static struct of_device_id wii_of_bus[] = {
		{ .compatible = "nintendo,hollywood", },
		{ },
		};

		static int __init wii_device_probe(void)
		{
		if (!machine_is(wii))
		return 0;

		of_platform_bus_probe(NULL, wii_of_bus, NULL);
		return 0;
		}
		device_initcall(wii_device_probe);