mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 13:11:14 +07:00
mips: ip32: add platform data hooks to use DS1685 driver
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
Linus Torvalds
parent
9e522c0d28
commit
15beb694c6
@ -105,7 +105,8 @@ CONFIG_RTC_CLASS=y
|
||||
# CONFIG_RTC_HCTOSYS is not set
|
||||
# CONFIG_RTC_INTF_SYSFS is not set
|
||||
# CONFIG_RTC_INTF_PROC is not set
|
||||
CONFIG_RTC_DRV_CMOS=y
|
||||
CONFIG_RTC_DRV_DS1685_FAMILY=y
|
||||
CONFIG_RTC_DRV_DS1685=y
|
||||
CONFIG_EXT2_FS=y
|
||||
CONFIG_EXT2_FS_XATTR=y
|
||||
CONFIG_EXT2_FS_POSIX_ACL=y
|
||||
|
||||
@ -1,36 +0,0 @@
|
||||
/*
|
||||
* This file is subject to the terms and conditions of the GNU General Public
|
||||
* License. See the file "COPYING" in the main directory of this archive
|
||||
* for more details.
|
||||
*
|
||||
* Copyright (C) 1998, 2001, 03 by Ralf Baechle
|
||||
* Copyright (C) 2000 Harald Koerfgen
|
||||
*
|
||||
* RTC routines for IP32 style attached Dallas chip.
|
||||
*/
|
||||
#ifndef __ASM_MACH_IP32_MC146818RTC_H
|
||||
#define __ASM_MACH_IP32_MC146818RTC_H
|
||||
|
||||
#include <asm/ip32/mace.h>
|
||||
|
||||
#define RTC_PORT(x) (0x70 + (x))
|
||||
|
||||
static unsigned char CMOS_READ(unsigned long addr)
|
||||
{
|
||||
return mace->isa.rtc[addr << 8];
|
||||
}
|
||||
|
||||
static inline void CMOS_WRITE(unsigned char data, unsigned long addr)
|
||||
{
|
||||
mace->isa.rtc[addr << 8] = data;
|
||||
}
|
||||
|
||||
/*
|
||||
* FIXME: Do it right. For now just assume that no one lives in 20th century
|
||||
* and no O2 user in 22th century ;-)
|
||||
*/
|
||||
#define mc146818_decode_year(year) ((year) + 2000)
|
||||
|
||||
#define RTC_ALWAYS_BCD 0
|
||||
|
||||
#endif /* __ASM_MACH_IP32_MC146818RTC_H */
|
||||
@ -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);
|
||||
|
||||
@ -11,10 +11,11 @@
|
||||
#include <linux/compiler.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/sched.h>
|
||||
#include <linux/notifier.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/ds17287rtc.h>
|
||||
#include <linux/rtc/ds1685.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/pm.h>
|
||||
|
||||
@ -33,53 +34,40 @@
|
||||
#define POWERDOWN_FREQ (HZ / 4)
|
||||
#define PANIC_FREQ (HZ / 8)
|
||||
|
||||
static struct timer_list power_timer, blink_timer, debounce_timer;
|
||||
static int has_panicked, shuting_down;
|
||||
extern struct platform_device ip32_rtc_device;
|
||||
|
||||
static void ip32_machine_restart(char *command) __noreturn;
|
||||
static void ip32_machine_halt(void) __noreturn;
|
||||
static void ip32_machine_power_off(void) __noreturn;
|
||||
static struct timer_list power_timer, blink_timer;
|
||||
static int has_panicked, shutting_down;
|
||||
|
||||
static __noreturn void ip32_poweroff(void *data)
|
||||
{
|
||||
void (*poweroff_func)(struct platform_device *) =
|
||||
symbol_get(ds1685_rtc_poweroff);
|
||||
|
||||
#ifdef CONFIG_MODULES
|
||||
/* If the first __symbol_get failed, our module wasn't loaded. */
|
||||
if (!poweroff_func) {
|
||||
request_module("rtc-ds1685");
|
||||
poweroff_func = symbol_get(ds1685_rtc_poweroff);
|
||||
}
|
||||
#endif
|
||||
|
||||
if (!poweroff_func)
|
||||
pr_emerg("RTC not available for power-off. Spinning forever ...\n");
|
||||
else {
|
||||
(*poweroff_func)((struct platform_device *)data);
|
||||
symbol_put(ds1685_rtc_poweroff);
|
||||
}
|
||||
|
||||
unreachable();
|
||||
}
|
||||
|
||||
static void ip32_machine_restart(char *cmd) __noreturn;
|
||||
static void ip32_machine_restart(char *cmd)
|
||||
{
|
||||
msleep(20);
|
||||
crime->control = CRIME_CONTROL_HARD_RESET;
|
||||
while (1);
|
||||
}
|
||||
|
||||
static inline void ip32_machine_halt(void)
|
||||
{
|
||||
ip32_machine_power_off();
|
||||
}
|
||||
|
||||
static void ip32_machine_power_off(void)
|
||||
{
|
||||
unsigned char reg_a, xctrl_a, xctrl_b;
|
||||
|
||||
disable_irq(MACEISA_RTC_IRQ);
|
||||
reg_a = CMOS_READ(RTC_REG_A);
|
||||
|
||||
/* setup for kickstart & wake-up (DS12287 Ref. Man. p. 19) */
|
||||
reg_a &= ~DS_REGA_DV2;
|
||||
reg_a |= DS_REGA_DV1;
|
||||
|
||||
CMOS_WRITE(reg_a | DS_REGA_DV0, RTC_REG_A);
|
||||
wbflush();
|
||||
xctrl_b = CMOS_READ(DS_B1_XCTRL4B)
|
||||
| DS_XCTRL4B_ABE | DS_XCTRL4B_KFE;
|
||||
CMOS_WRITE(xctrl_b, DS_B1_XCTRL4B);
|
||||
xctrl_a = CMOS_READ(DS_B1_XCTRL4A) & ~DS_XCTRL4A_IFS;
|
||||
CMOS_WRITE(xctrl_a, DS_B1_XCTRL4A);
|
||||
wbflush();
|
||||
/* adios amigos... */
|
||||
CMOS_WRITE(xctrl_a | DS_XCTRL4A_PAB, DS_B1_XCTRL4A);
|
||||
CMOS_WRITE(reg_a, RTC_REG_A);
|
||||
wbflush();
|
||||
while (1);
|
||||
}
|
||||
|
||||
static void power_timeout(unsigned long data)
|
||||
{
|
||||
ip32_machine_power_off();
|
||||
unreachable();
|
||||
}
|
||||
|
||||
static void blink_timeout(unsigned long data)
|
||||
@ -89,44 +77,27 @@ static void blink_timeout(unsigned long data)
|
||||
mod_timer(&blink_timer, jiffies + data);
|
||||
}
|
||||
|
||||
static void debounce(unsigned long data)
|
||||
static void ip32_machine_halt(void)
|
||||
{
|
||||
unsigned char reg_a, reg_c, xctrl_a;
|
||||
|
||||
reg_c = CMOS_READ(RTC_INTR_FLAGS);
|
||||
reg_a = CMOS_READ(RTC_REG_A);
|
||||
CMOS_WRITE(reg_a | DS_REGA_DV0, RTC_REG_A);
|
||||
wbflush();
|
||||
xctrl_a = CMOS_READ(DS_B1_XCTRL4A);
|
||||
if ((xctrl_a & DS_XCTRL4A_IFS) || (reg_c & RTC_IRQF )) {
|
||||
/* Interrupt still being sent. */
|
||||
debounce_timer.expires = jiffies + 50;
|
||||
add_timer(&debounce_timer);
|
||||
|
||||
/* clear interrupt source */
|
||||
CMOS_WRITE(xctrl_a & ~DS_XCTRL4A_IFS, DS_B1_XCTRL4A);
|
||||
CMOS_WRITE(reg_a & ~DS_REGA_DV0, RTC_REG_A);
|
||||
return;
|
||||
}
|
||||
CMOS_WRITE(reg_a & ~DS_REGA_DV0, RTC_REG_A);
|
||||
|
||||
if (has_panicked)
|
||||
ip32_machine_restart(NULL);
|
||||
|
||||
enable_irq(MACEISA_RTC_IRQ);
|
||||
ip32_poweroff(&ip32_rtc_device);
|
||||
}
|
||||
|
||||
static inline void ip32_power_button(void)
|
||||
static void power_timeout(unsigned long data)
|
||||
{
|
||||
ip32_poweroff(&ip32_rtc_device);
|
||||
}
|
||||
|
||||
void ip32_prepare_poweroff(void)
|
||||
{
|
||||
if (has_panicked)
|
||||
return;
|
||||
|
||||
if (shuting_down || kill_cad_pid(SIGINT, 1)) {
|
||||
if (shutting_down || kill_cad_pid(SIGINT, 1)) {
|
||||
/* No init process or button pressed twice. */
|
||||
ip32_machine_power_off();
|
||||
ip32_poweroff(&ip32_rtc_device);
|
||||
}
|
||||
|
||||
shuting_down = 1;
|
||||
shutting_down = 1;
|
||||
blink_timer.data = POWERDOWN_FREQ;
|
||||
blink_timeout(POWERDOWN_FREQ);
|
||||
|
||||
@ -136,27 +107,6 @@ static inline void ip32_power_button(void)
|
||||
add_timer(&power_timer);
|
||||
}
|
||||
|
||||
static irqreturn_t ip32_rtc_int(int irq, void *dev_id)
|
||||
{
|
||||
unsigned char reg_c;
|
||||
|
||||
reg_c = CMOS_READ(RTC_INTR_FLAGS);
|
||||
if (!(reg_c & RTC_IRQF)) {
|
||||
printk(KERN_WARNING
|
||||
"%s: RTC IRQ without RTC_IRQF\n", __func__);
|
||||
}
|
||||
/* Wait until interrupt goes away */
|
||||
disable_irq_nosync(MACEISA_RTC_IRQ);
|
||||
init_timer(&debounce_timer);
|
||||
debounce_timer.function = debounce;
|
||||
debounce_timer.expires = jiffies + 50;
|
||||
add_timer(&debounce_timer);
|
||||
|
||||
printk(KERN_DEBUG "Power button pressed\n");
|
||||
ip32_power_button();
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static int panic_event(struct notifier_block *this, unsigned long event,
|
||||
void *ptr)
|
||||
{
|
||||
@ -190,15 +140,12 @@ static __init int ip32_reboot_setup(void)
|
||||
|
||||
_machine_restart = ip32_machine_restart;
|
||||
_machine_halt = ip32_machine_halt;
|
||||
pm_power_off = ip32_machine_power_off;
|
||||
pm_power_off = ip32_machine_halt;
|
||||
|
||||
init_timer(&blink_timer);
|
||||
blink_timer.function = blink_timeout;
|
||||
atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
|
||||
|
||||
if (request_irq(MACEISA_RTC_IRQ, ip32_rtc_int, 0, "rtc", NULL))
|
||||
panic("Can't allocate MACEISA RTC IRQ");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user