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mips: ip32: add platform data hooks to use DS1685 driver

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This modifies the IP32 (SGI O2) platform and reset code to utilize the new
rtc-ds1685 driver.  The old mc146818rtc.h header is removed and ip32_defconfig
is updated as well.

Signed-off-by: Joshua Kinard <kumba@gentoo.org>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joshua Kinard 2015-04-16 12:49:09 -07:00 • committed by Linus Torvalds
parent 9e522c0d28
commit 15beb694c6
4 changed files with 84 additions and 140 deletions
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46
arch/mips/sgi-ip32/ip32-platform.c
View file

@ -9,10 +9,13 @@
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/serial_8250.h>
#include <linux/rtc/ds1685.h>
#include <asm/ip32/mace.h>
#include <asm/ip32/ip32_ints.h>
extern void ip32_prepare_poweroff(void);
#define MACEISA_SERIAL1_OFFS offsetof(struct sgi_mace, isa.serial1)
#define MACEISA_SERIAL2_OFFS offsetof(struct sgi_mace, isa.serial2)
@ -90,18 +93,47 @@ static __init int sgio2btns_devinit(void)
device_initcall(sgio2btns_devinit);
static struct resource sgio2_cmos_rsrc[] = {
#define MACE_RTC_RES_START (MACE_BASE + offsetof(struct sgi_mace, isa.rtc))
#define MACE_RTC_RES_END (MACE_RTC_RES_START + 32767)
static struct resource ip32_rtc_resources[] = {
{
.start = 0x70,
.end = 0x71,
.flags = IORESOURCE_IO
.start = MACEISA_RTC_IRQ,
.end = MACEISA_RTC_IRQ,
.flags = IORESOURCE_IRQ
}, {
.start = MACE_RTC_RES_START,
.end = MACE_RTC_RES_END,
.flags = IORESOURCE_MEM,
}
};
static __init int sgio2_cmos_devinit(void)
/* RTC registers on IP32 are each padded by 256 bytes (0x100). */
static struct ds1685_rtc_platform_data
ip32_rtc_platform_data[] = {
{
.regstep = 0x100,
.bcd_mode = true,
.no_irq = false,
.uie_unsupported = false,
.alloc_io_resources = true,
.plat_prepare_poweroff = ip32_prepare_poweroff,
},
};
struct platform_device ip32_rtc_device = {
.name = "rtc-ds1685",
.id = -1,
.dev = {
.platform_data = ip32_rtc_platform_data,
},
.num_resources = ARRAY_SIZE(ip32_rtc_resources),
.resource = ip32_rtc_resources,
};
+static int __init sgio2_rtc_devinit(void)
{
return IS_ERR(platform_device_register_simple("rtc_cmos", -1,
sgio2_cmos_rsrc, 1));
return platform_device_register(&ip32_rtc_device);
}
device_initcall(sgio2_cmos_devinit);