diff options
Diffstat (limited to 'packages/linux/ixp4xx-kernel/2.6.16/97-ds101-buttons.patch')
| -rw-r--r-- | packages/linux/ixp4xx-kernel/2.6.16/97-ds101-buttons.patch | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/packages/linux/ixp4xx-kernel/2.6.16/97-ds101-buttons.patch b/packages/linux/ixp4xx-kernel/2.6.16/97-ds101-buttons.patch new file mode 100644 index 0000000000..b72c880259 --- /dev/null +++ b/packages/linux/ixp4xx-kernel/2.6.16/97-ds101-buttons.patch @@ -0,0 +1,122 @@ +Index: linux-2.6.15/arch/arm/mach-ixp4xx/ds101-buttons.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.15/arch/arm/mach-ixp4xx/ds101-buttons.c 2006-02-16 20:04:47.000000000 +0100 +@@ -0,0 +1,117 @@ ++/* ++ * arch/arm/mach-ixp4xx/ds101-buttons.c ++ * ++ * DS101 Button driver ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ * ++ */ ++ ++#include <linux/module.h> ++#include <linux/reboot.h> ++#include <linux/interrupt.h> ++#include <asm/mach-types.h> ++ ++extern void ctrl_alt_del(void); ++static int usbcopyb_irqcount = 0; ++static int resetb_irqcount = 0; ++static int powerb_irqcount = 0; ++ ++static irqreturn_t ds101_usbcopy_handler(int irq, void *dev_id, struct pt_regs *regs) ++{ ++ usbcopyb_irqcount++; ++ if (usbcopyb_irqcount > 1) /* Init creates one IRQ. Ignore it */ ++ { ++ /* The GPIO line is shared between the button and the led. ++ * Make sure the GPIO is GPIO_OUT, so we don't recieve ++ * irqs from the led going on/off. Disable the irq just in ++ * case. ++ */ ++ gpio_line_config(DS101_USBCOPYB_IRQ, DS101_GPIO_OUT); ++ disable_irq(DS101_USBCOPYB_IRQ); ++ printk(KERN_INFO "Usbcopy\n"); ++ } ++ return IRQ_HANDLED; ++} ++ ++static irqreturn_t ds101_power_handler(int irq, void *dev_id, struct pt_regs *regs) ++{ ++ powerb_irqcount++; ++ if (powerb_irqcount > 1) ++ { ++ /* Make the power led flash */ ++ gpio_line_set(DS101_POWER_LED, DS101_GPIO_LOW); ++ ctrl_alt_del(); ++ } ++ return IRQ_HANDLED; ++} ++ ++static irqreturn_t ds101_reset_handler(int irq, void *dev_id, struct pt_regs *regs) ++{ ++ resetb_irqcount++; ++ if (resetb_irqcount > 1) ++ { ++ machine_power_off(); ++ } ++ return IRQ_HANDLED; ++} ++ ++static int __init ds101_buttons_init(void) ++{ ++ if (!(machine_is_ds101())) ++ return 0; ++ printk(KERN_INFO "DiskStation DS101 button driver v0.2\n"); ++ gpio_line_config(DS101_POWERB_GPIO, (DS101_GPIO_IN|IRQT_FALLING)); ++ gpio_line_config(DS101_RESETB_GPIO, (DS101_GPIO_IN|IRQT_FALLING)); ++ gpio_line_config(DS101_USBCOPYB_GPIO, (DS101_GPIO_IN|IRQT_FALLING)); ++ set_irq_type(DS101_USBCOPYB_IRQ, IRQT_FALLING); ++ set_irq_type(DS101_POWERB_IRQ, IRQT_FALLING); ++ set_irq_type(DS101_RESETB_IRQ, IRQT_FALLING); ++ if (request_irq(DS101_USBCOPYB_IRQ, &ds101_usbcopy_handler, SA_INTERRUPT, ++ "DS101 USBCopy button", NULL) < 0) ++ { ++ printk(KERN_DEBUG "Could not get USBCopy button IRQ (%d)\n", ++ DS101_USBCOPYB_IRQ); ++ ++ return -EIO; ++ } ++ ++ if (request_irq(DS101_POWERB_IRQ, &ds101_power_handler, SA_INTERRUPT, ++ "DS101 Powerbutton", NULL) < 0) ++ { ++ printk(KERN_DEBUG "Could not get powerbutton IRQ (%d)\n", ++ DS101_POWERB_IRQ); ++ return -EIO; ++ } ++ ++ if (request_irq(DS101_RESETB_IRQ, &ds101_reset_handler, SA_INTERRUPT, ++ "DS101 Resetbutton", NULL) < 0) ++ { ++ printk(KERN_DEBUG "Could not get resetbutton IRQ (%d)\n", ++ DS101_RESETB_IRQ); ++ return -EIO; ++ } ++ return 0; ++} ++ ++static void __exit ds101_buttons_exit(void) ++{ ++ if (!(machine_is_ds101())) ++ return; ++ ++ disable_irq(DS101_USBCOPYB_IRQ); ++ disable_irq(DS101_POWERB_IRQ); ++ disable_irq(DS101_RESETB_IRQ); ++ free_irq(DS101_USBCOPYB_IRQ, NULL); ++ free_irq(DS101_POWERB_IRQ, NULL); ++ free_irq(DS101_RESETB_IRQ, NULL); ++} ++ ++module_init(ds101_buttons_init); ++module_exit(ds101_buttons_exit); ++ ++MODULE_AUTHOR("OEyvind Repvik <nail@nslu2-linux.org>"); ++MODULE_DESCRIPTION("DS101 Button driver"); ++MODULE_LICENSE("GPL"); |