diff options
Diffstat (limited to 'arch/i386/kernel/i8237.c')
-rw-r--r-- | arch/i386/kernel/i8237.c | 72 |
1 files changed, 0 insertions, 72 deletions
diff --git a/arch/i386/kernel/i8237.c b/arch/i386/kernel/i8237.c deleted file mode 100644 index 6f508e8..0000000 --- a/arch/i386/kernel/i8237.c +++ /dev/null @@ -1,72 +0,0 @@ -/* - * i8237.c: 8237A DMA controller suspend functions. - * - * Written by Pierre Ossman, 2005. - * - * 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. - */ - -#include <linux/init.h> -#include <linux/sysdev.h> - -#include <asm/dma.h> - -/* - * This module just handles suspend/resume issues with the - * 8237A DMA controller (used for ISA and LPC). - * Allocation is handled in kernel/dma.c and normal usage is - * in asm/dma.h. - */ - -static int i8237A_resume(struct sys_device *dev) -{ - unsigned long flags; - int i; - - flags = claim_dma_lock(); - - dma_outb(DMA1_RESET_REG, 0); - dma_outb(DMA2_RESET_REG, 0); - - for (i = 0;i < 8;i++) { - set_dma_addr(i, 0x000000); - /* DMA count is a bit weird so this is not 0 */ - set_dma_count(i, 1); - } - - /* Enable cascade DMA or channel 0-3 won't work */ - enable_dma(4); - - release_dma_lock(flags); - - return 0; -} - -static int i8237A_suspend(struct sys_device *dev, pm_message_t state) -{ - return 0; -} - -static struct sysdev_class i8237_sysdev_class = { - set_kset_name("i8237"), - .suspend = i8237A_suspend, - .resume = i8237A_resume, -}; - -static struct sys_device device_i8237A = { - .id = 0, - .cls = &i8237_sysdev_class, -}; - -static int __init i8237A_init_sysfs(void) -{ - int error = sysdev_class_register(&i8237_sysdev_class); - if (!error) - error = sysdev_register(&device_i8237A); - return error; -} - -device_initcall(i8237A_init_sysfs); |