[SPARC64]: Probe for power device on ISA bus too. (2256c13b) · Commits · e / devices / android_kernel_xiaomi_nabu

arch/sparc64/kernel/power.c

+51 −13

Original line number	Diff line number	Diff line
		@@ -17,6 +17,7 @@

		#include <asm/system.h>
		#include <asm/ebus.h>
		#include <asm/isa.h>
		#include <asm/auxio.h>

		#include <linux/unistd.h>
		@@ -100,46 +101,83 @@ static int powerd(void *__unused)
		return 0;
		}

		static int __init has_button_interrupt(struct linux_ebus_device *edev)
		static int __init has_button_interrupt(unsigned int irq, int prom_node)
		{
		if (edev->irqs[0] == PCI_IRQ_NONE)
		if (irq == PCI_IRQ_NONE)
		return 0;
		if (!prom_node_has_property(edev->prom_node, "button"))
		if (!prom_node_has_property(prom_node, "button"))
		return 0;

		return 1;
		}

		void __init power_init(void)
		static int __init power_probe_ebus(struct resource *resp, unsigned int irq_p, int *prom_node_p)
		{
		struct linux_ebus *ebus;
		struct linux_ebus_device *edev;

		for_each_ebus(ebus) {
		for_each_ebusdev(edev, ebus) {
		if (!strcmp(edev->prom_name, "power")) {
		*resp = &edev->resource[0];
		*irq_p = edev->irqs[0];
		*prom_node_p = edev->prom_node;
		return 0;
		}
		}
		}
		return -ENODEV;
		}

		static int __init power_probe_isa(struct resource *resp, unsigned int irq_p, int *prom_node_p)
		{
		struct sparc_isa_bridge *isa_bus;
		struct sparc_isa_device *isa_dev;

		for_each_isa(isa_bus) {
		for_each_isadev(isa_dev, isa_bus) {
		if (!strcmp(isa_dev->prom_name, "power")) {
		*resp = &isa_dev->resource;
		*irq_p = isa_dev->irq;
		*prom_node_p = isa_dev->prom_node;
		return 0;
		}
		}
		}
		return -ENODEV;
		}

		void __init power_init(void)
		{
		struct resource *res = NULL;
		unsigned int irq;
		int prom_node;
		static int invoked;

		if (invoked)
		return;
		invoked = 1;

		for_each_ebus(ebus) {
		for_each_ebusdev(edev, ebus) {
		if (!strcmp(edev->prom_name, "power"))
		if (!power_probe_ebus(&res, &irq, &prom_node))
		goto found;
		}
		}

		if (!power_probe_isa(&res, &irq, &prom_node))
		goto found;

		return;

		found:
		power_reg = ioremap(edev->resource[0].start, 0x4);
		power_reg = ioremap(res->start, 0x4);
		printk("power: Control reg at %p ... ", power_reg);
		poweroff_method = machine_halt; /* able to use the standard halt */
		if (has_button_interrupt(edev)) {
		if (has_button_interrupt(irq, prom_node)) {
		if (kernel_thread(powerd, NULL, CLONE_FS) < 0) {
		printk("Failed to start power daemon.\n");
		return;
		}
		printk("powerd running.\n");

		if (request_irq(edev->irqs[0],
		if (request_irq(irq,
		power_handler, SA_SHIRQ, "power", NULL) < 0)
		printk("power: Error, cannot register IRQ handler.\n");
		} else {