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author | Rusty Russell <rusty@rustcorp.com.au> | 2008-12-31 23:05:57 +1030 |
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committer | Rusty Russell <rusty@rustcorp.com.au> | 2008-12-31 23:05:57 +1030 |
commit | 2ca1a615835d9f4990f42102ab1f2ef434e7e89c (patch) | |
tree | 726cf3d5f29a6c66c44e4bd68e7ebed2fd83d059 /arch/sparc/kernel/power.c | |
parent | e12f0102ac81d660c9f801d0a0e10ccf4537a9de (diff) | |
parent | 6a94cb73064c952255336cc57731904174b2c58f (diff) | |
download | blackbird-op-linux-2ca1a615835d9f4990f42102ab1f2ef434e7e89c.tar.gz blackbird-op-linux-2ca1a615835d9f4990f42102ab1f2ef434e7e89c.zip |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
arch/x86/kernel/io_apic.c
Diffstat (limited to 'arch/sparc/kernel/power.c')
-rw-r--r-- | arch/sparc/kernel/power.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/arch/sparc/kernel/power.c b/arch/sparc/kernel/power.c new file mode 100644 index 000000000000..076cad7f9757 --- /dev/null +++ b/arch/sparc/kernel/power.c @@ -0,0 +1,75 @@ +/* power.c: Power management driver. + * + * Copyright (C) 1999, 2007, 2008 David S. Miller (davem@davemloft.net) + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/reboot.h> +#include <linux/of_device.h> + +#include <asm/prom.h> +#include <asm/io.h> + +static void __iomem *power_reg; + +static irqreturn_t power_handler(int irq, void *dev_id) +{ + orderly_poweroff(true); + + /* FIXME: Check registers for status... */ + return IRQ_HANDLED; +} + +static int __init has_button_interrupt(unsigned int irq, struct device_node *dp) +{ + if (irq == 0xffffffff) + return 0; + if (!of_find_property(dp, "button", NULL)) + return 0; + + return 1; +} + +static int __devinit power_probe(struct of_device *op, const struct of_device_id *match) +{ + struct resource *res = &op->resource[0]; + unsigned int irq= op->irqs[0]; + + power_reg = of_ioremap(res, 0, 0x4, "power"); + + printk(KERN_INFO "%s: Control reg at %lx\n", + op->node->name, res->start); + + if (has_button_interrupt(irq, op->node)) { + if (request_irq(irq, + power_handler, 0, "power", NULL) < 0) + printk(KERN_ERR "power: Cannot setup IRQ handler.\n"); + } + + return 0; +} + +static struct of_device_id __initdata power_match[] = { + { + .name = "power", + }, + {}, +}; + +static struct of_platform_driver power_driver = { + .match_table = power_match, + .probe = power_probe, + .driver = { + .name = "power", + }, +}; + +static int __init power_init(void) +{ + return of_register_driver(&power_driver, &of_platform_bus_type); +} + +device_initcall(power_init); |