mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-01 08:26:39 +07:00
ada3ea6fcd
The RTC CMOS driver expects the interrupt to be a resource of the platform device. Use a fixed interrupt value of 8 since on PPC if we are using this its off an i8259 which we ensure has interrupt numbers 0..15. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
59 lines
1.3 KiB
C
59 lines
1.3 KiB
C
/*
|
|
* Setup code for PC-style Real-Time Clock.
|
|
*
|
|
* Author: Wade Farnsworth <wfarnsworth@mvista.com>
|
|
*
|
|
* 2007 (c) MontaVista Software, Inc. This file is licensed under
|
|
* the terms of the GNU General Public License version 2. This program
|
|
* is licensed "as is" without any warranty of any kind, whether express
|
|
* or implied.
|
|
*/
|
|
|
|
#include <linux/platform_device.h>
|
|
#include <linux/err.h>
|
|
#include <linux/init.h>
|
|
#include <linux/mc146818rtc.h>
|
|
|
|
#include <asm/prom.h>
|
|
|
|
static int __init add_rtc(void)
|
|
{
|
|
struct device_node *np;
|
|
struct platform_device *pd;
|
|
struct resource res[2];
|
|
int ret;
|
|
|
|
memset(&res, 0, sizeof(res));
|
|
|
|
np = of_find_compatible_node(NULL, NULL, "pnpPNP,b00");
|
|
if (!np)
|
|
return -ENODEV;
|
|
|
|
ret = of_address_to_resource(np, 0, &res[0]);
|
|
of_node_put(np);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/*
|
|
* RTC_PORT(x) is hardcoded in asm/mc146818rtc.h. Verify that the
|
|
* address provided by the device node matches.
|
|
*/
|
|
if (res[0].start != RTC_PORT(0))
|
|
return -EINVAL;
|
|
|
|
/* Use a fixed interrupt value of 8 since on PPC if we are using this
|
|
* its off an i8259 which we ensure has interrupt numbers 0..15. */
|
|
res[1].start = 8;
|
|
res[1].end = 8;
|
|
res[1].flags = IORESOURCE_IRQ;
|
|
|
|
pd = platform_device_register_simple("rtc_cmos", -1,
|
|
&res[0], 2);
|
|
|
|
if (IS_ERR(pd))
|
|
return PTR_ERR(pd);
|
|
|
|
return 0;
|
|
}
|
|
fs_initcall(add_rtc);
|