mirror of
https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
synced 2026-10-29 19:21:31 -04:00
Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: MIPS: Kill unused <asm/debug.h> inclusions MIPS: IP32: Add platform device for CMOS RTC; remove dead code RTC: M48T35: new RTC driver MIPS: IP27: Switch over to RTC class driver MIPS: DS1286: New RTC driver MIPS: IP22/28: Switch over to RTC class driver MIPS: PCI: Scan busses when they are registered MIPS: WGT634U: Add reset button support MIPS: BCM47xx: Use the new SSB GPIO API MIPS: BCM47xx: Remove references to BCM947XX MIPS: WGT634U: Add machine detection message MIPS: Align .data.cacheline_aligned based on CONFIG_MIPS_L1_CACHE_SHIFT MIPS: show_cpuinfo prints the type of the calling CPU MIPS: Fix wrong branch target in new spin_lock code. MIPS: Have a heart for a lonely, lost header file ...
This commit is contained in:
Linus Torvalds
commit
04ab591808
31 changed files with 869 additions and 286 deletions
|
|
@ -352,6 +352,11 @@ config RTC_DRV_DS1216
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|||
help
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||||
If you say yes here you get support for the Dallas DS1216 RTC chips.
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config RTC_DRV_DS1286
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tristate "Dallas DS1286"
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help
|
||||
If you say yes here you get support for the Dallas DS1286 RTC chips.
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||||
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config RTC_DRV_DS1302
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tristate "Dallas DS1302"
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depends on SH_SECUREEDGE5410
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||||
|
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@ -405,6 +410,15 @@ config RTC_DRV_M48T86
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This driver can also be built as a module. If so, the module
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will be called rtc-m48t86.
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config RTC_DRV_M48T35
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tristate "ST M48T35"
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help
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||||
If you say Y here you will get support for the
|
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ST M48T35 RTC chip.
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||||
|
||||
This driver can also be built as a module, if so, the module
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will be called "rtc-m48t35".
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config RTC_DRV_M48T59
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tristate "ST M48T59/M48T08/M48T02"
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help
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|
|
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|||
|
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@ -23,6 +23,7 @@ obj-$(CONFIG_RTC_DRV_AT91SAM9) += rtc-at91sam9.o
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obj-$(CONFIG_RTC_DRV_BFIN) += rtc-bfin.o
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obj-$(CONFIG_RTC_DRV_CMOS) += rtc-cmos.o
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obj-$(CONFIG_RTC_DRV_DS1216) += rtc-ds1216.o
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obj-$(CONFIG_RTC_DRV_DS1286) += rtc-ds1286.o
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obj-$(CONFIG_RTC_DRV_DS1302) += rtc-ds1302.o
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obj-$(CONFIG_RTC_DRV_DS1305) += rtc-ds1305.o
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obj-$(CONFIG_RTC_DRV_DS1307) += rtc-ds1307.o
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@ -36,6 +37,7 @@ obj-$(CONFIG_RTC_DRV_FM3130) += rtc-fm3130.o
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obj-$(CONFIG_RTC_DRV_ISL1208) += rtc-isl1208.o
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obj-$(CONFIG_RTC_DRV_M41T80) += rtc-m41t80.o
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obj-$(CONFIG_RTC_DRV_M41T94) += rtc-m41t94.o
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obj-$(CONFIG_RTC_DRV_M48T35) += rtc-m48t35.o
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obj-$(CONFIG_RTC_DRV_M48T59) += rtc-m48t59.o
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obj-$(CONFIG_RTC_DRV_M48T86) += rtc-m48t86.o
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obj-$(CONFIG_RTC_DRV_BQ4802) += rtc-bq4802.o
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409
drivers/rtc/rtc-ds1286.c
Normal file
409
drivers/rtc/rtc-ds1286.c
Normal file
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@ -0,0 +1,409 @@
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/*
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* DS1286 Real Time Clock interface for Linux
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*
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* Copyright (C) 1998, 1999, 2000 Ralf Baechle
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* Copyright (C) 2008 Thomas Bogendoerfer
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*
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* Based on code written by Paul Gortmaker.
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*
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||||
* This program is free software; you can redistribute it and/or modify it
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||||
* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/rtc.h>
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#include <linux/platform_device.h>
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#include <linux/bcd.h>
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#include <linux/ds1286.h>
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#define DRV_VERSION "1.0"
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struct ds1286_priv {
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struct rtc_device *rtc;
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u32 __iomem *rtcregs;
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size_t size;
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unsigned long baseaddr;
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spinlock_t lock;
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};
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static inline u8 ds1286_rtc_read(struct ds1286_priv *priv, int reg)
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{
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return __raw_readl(&priv->rtcregs[reg]) & 0xff;
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}
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static inline void ds1286_rtc_write(struct ds1286_priv *priv, u8 data, int reg)
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{
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__raw_writel(data, &priv->rtcregs[reg]);
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}
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#ifdef CONFIG_RTC_INTF_DEV
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static int ds1286_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
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{
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struct ds1286_priv *priv = dev_get_drvdata(dev);
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unsigned long flags;
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unsigned char val;
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switch (cmd) {
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case RTC_AIE_OFF:
|
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/* Mask alarm int. enab. bit */
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spin_lock_irqsave(&priv->lock, flags);
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val = ds1286_rtc_read(priv, RTC_CMD);
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val |= RTC_TDM;
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ds1286_rtc_write(priv, val, RTC_CMD);
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spin_unlock_irqrestore(&priv->lock, flags);
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break;
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case RTC_AIE_ON:
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/* Allow alarm interrupts. */
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spin_lock_irqsave(&priv->lock, flags);
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val = ds1286_rtc_read(priv, RTC_CMD);
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val &= ~RTC_TDM;
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ds1286_rtc_write(priv, val, RTC_CMD);
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spin_unlock_irqrestore(&priv->lock, flags);
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break;
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case RTC_WIE_OFF:
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||||
/* Mask watchdog int. enab. bit */
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spin_lock_irqsave(&priv->lock, flags);
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val = ds1286_rtc_read(priv, RTC_CMD);
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val |= RTC_WAM;
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ds1286_rtc_write(priv, val, RTC_CMD);
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spin_unlock_irqrestore(&priv->lock, flags);
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break;
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case RTC_WIE_ON:
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/* Allow watchdog interrupts. */
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spin_lock_irqsave(&priv->lock, flags);
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val = ds1286_rtc_read(priv, RTC_CMD);
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val &= ~RTC_WAM;
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ds1286_rtc_write(priv, val, RTC_CMD);
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spin_unlock_irqrestore(&priv->lock, flags);
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break;
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||||
default:
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return -ENOIOCTLCMD;
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}
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return 0;
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}
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#else
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#define ds1286_ioctl NULL
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#endif
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#ifdef CONFIG_PROC_FS
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static int ds1286_proc(struct device *dev, struct seq_file *seq)
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{
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struct ds1286_priv *priv = dev_get_drvdata(dev);
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unsigned char month, cmd, amode;
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||||
const char *s;
|
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|
||||
month = ds1286_rtc_read(priv, RTC_MONTH);
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seq_printf(seq,
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||||
"oscillator\t: %s\n"
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"square_wave\t: %s\n",
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(month & RTC_EOSC) ? "disabled" : "enabled",
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(month & RTC_ESQW) ? "disabled" : "enabled");
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||||
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||||
amode = ((ds1286_rtc_read(priv, RTC_MINUTES_ALARM) & 0x80) >> 5) |
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||||
((ds1286_rtc_read(priv, RTC_HOURS_ALARM) & 0x80) >> 6) |
|
||||
((ds1286_rtc_read(priv, RTC_DAY_ALARM) & 0x80) >> 7);
|
||||
switch (amode) {
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case 7:
|
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s = "each minute";
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||||
break;
|
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case 3:
|
||||
s = "minutes match";
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||||
break;
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||||
case 1:
|
||||
s = "hours and minutes match";
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||||
break;
|
||||
case 0:
|
||||
s = "days, hours and minutes match";
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||||
break;
|
||||
default:
|
||||
s = "invalid";
|
||||
break;
|
||||
}
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||||
seq_printf(seq, "alarm_mode\t: %s\n", s);
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||||
|
||||
cmd = ds1286_rtc_read(priv, RTC_CMD);
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||||
seq_printf(seq,
|
||||
"alarm_enable\t: %s\n"
|
||||
"wdog_alarm\t: %s\n"
|
||||
"alarm_mask\t: %s\n"
|
||||
"wdog_alarm_mask\t: %s\n"
|
||||
"interrupt_mode\t: %s\n"
|
||||
"INTB_mode\t: %s_active\n"
|
||||
"interrupt_pins\t: %s\n",
|
||||
(cmd & RTC_TDF) ? "yes" : "no",
|
||||
(cmd & RTC_WAF) ? "yes" : "no",
|
||||
(cmd & RTC_TDM) ? "disabled" : "enabled",
|
||||
(cmd & RTC_WAM) ? "disabled" : "enabled",
|
||||
(cmd & RTC_PU_LVL) ? "pulse" : "level",
|
||||
(cmd & RTC_IBH_LO) ? "low" : "high",
|
||||
(cmd & RTC_IPSW) ? "unswapped" : "swapped");
|
||||
return 0;
|
||||
}
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||||
|
||||
#else
|
||||
#define ds1286_proc NULL
|
||||
#endif
|
||||
|
||||
static int ds1286_read_time(struct device *dev, struct rtc_time *tm)
|
||||
{
|
||||
struct ds1286_priv *priv = dev_get_drvdata(dev);
|
||||
unsigned char save_control;
|
||||
unsigned long flags;
|
||||
unsigned long uip_watchdog = jiffies;
|
||||
|
||||
/*
|
||||
* read RTC once any update in progress is done. The update
|
||||
* can take just over 2ms. We wait 10 to 20ms. There is no need to
|
||||
* to poll-wait (up to 1s - eeccch) for the falling edge of RTC_UIP.
|
||||
* If you need to know *exactly* when a second has started, enable
|
||||
* periodic update complete interrupts, (via ioctl) and then
|
||||
* immediately read /dev/rtc which will block until you get the IRQ.
|
||||
* Once the read clears, read the RTC time (again via ioctl). Easy.
|
||||
*/
|
||||
|
||||
if (ds1286_rtc_read(priv, RTC_CMD) & RTC_TE)
|
||||
while (time_before(jiffies, uip_watchdog + 2*HZ/100))
|
||||
barrier();
|
||||
|
||||
/*
|
||||
* Only the values that we read from the RTC are set. We leave
|
||||
* tm_wday, tm_yday and tm_isdst untouched. Even though the
|
||||
* RTC has RTC_DAY_OF_WEEK, we ignore it, as it is only updated
|
||||
* by the RTC when initially set to a non-zero value.
|
||||
*/
|
||||
spin_lock_irqsave(&priv->lock, flags);
|
||||
save_control = ds1286_rtc_read(priv, RTC_CMD);
|
||||
ds1286_rtc_write(priv, (save_control|RTC_TE), RTC_CMD);
|
||||
|
||||
tm->tm_sec = ds1286_rtc_read(priv, RTC_SECONDS);
|
||||
tm->tm_min = ds1286_rtc_read(priv, RTC_MINUTES);
|
||||
tm->tm_hour = ds1286_rtc_read(priv, RTC_HOURS) & 0x3f;
|
||||
tm->tm_mday = ds1286_rtc_read(priv, RTC_DATE);
|
||||
tm->tm_mon = ds1286_rtc_read(priv, RTC_MONTH) & 0x1f;
|
||||
tm->tm_year = ds1286_rtc_read(priv, RTC_YEAR);
|
||||
|
||||
ds1286_rtc_write(priv, save_control, RTC_CMD);
|
||||
spin_unlock_irqrestore(&priv->lock, flags);
|
||||
|
||||
tm->tm_sec = bcd2bin(tm->tm_sec);
|
||||
tm->tm_min = bcd2bin(tm->tm_min);
|
||||
tm->tm_hour = bcd2bin(tm->tm_hour);
|
||||
tm->tm_mday = bcd2bin(tm->tm_mday);
|
||||
tm->tm_mon = bcd2bin(tm->tm_mon);
|
||||
tm->tm_year = bcd2bin(tm->tm_year);
|
||||
|
||||
/*
|
||||
* Account for differences between how the RTC uses the values
|
||||
* and how they are defined in a struct rtc_time;
|
||||
*/
|
||||
if (tm->tm_year < 45)
|
||||
tm->tm_year += 30;
|
||||
tm->tm_year += 40;
|
||||
if (tm->tm_year < 70)
|
||||
tm->tm_year += 100;
|
||||
|
||||
tm->tm_mon--;
|
||||
|
||||
return rtc_valid_tm(tm);
|
||||
}
|
||||
|
||||
static int ds1286_set_time(struct device *dev, struct rtc_time *tm)
|
||||
{
|
||||
struct ds1286_priv *priv = dev_get_drvdata(dev);
|
||||
unsigned char mon, day, hrs, min, sec;
|
||||
unsigned char save_control;
|
||||
unsigned int yrs;
|
||||
unsigned long flags;
|
||||
|
||||
yrs = tm->tm_year + 1900;
|
||||
mon = tm->tm_mon + 1; /* tm_mon starts at zero */
|
||||
day = tm->tm_mday;
|
||||
hrs = tm->tm_hour;
|
||||
min = tm->tm_min;
|
||||
sec = tm->tm_sec;
|
||||
|
||||
if (yrs < 1970)
|
||||
return -EINVAL;
|
||||
|
||||
yrs -= 1940;
|
||||
if (yrs > 255) /* They are unsigned */
|
||||
return -EINVAL;
|
||||
|
||||
if (yrs >= 100)
|
||||
yrs -= 100;
|
||||
|
||||
sec = bin2bcd(sec);
|
||||
min = bin2bcd(min);
|
||||
hrs = bin2bcd(hrs);
|
||||
day = bin2bcd(day);
|
||||
mon = bin2bcd(mon);
|
||||
yrs = bin2bcd(yrs);
|
||||
|
||||
spin_lock_irqsave(&priv->lock, flags);
|
||||
save_control = ds1286_rtc_read(priv, RTC_CMD);
|
||||
ds1286_rtc_write(priv, (save_control|RTC_TE), RTC_CMD);
|
||||
|
||||
ds1286_rtc_write(priv, yrs, RTC_YEAR);
|
||||
ds1286_rtc_write(priv, mon, RTC_MONTH);
|
||||
ds1286_rtc_write(priv, day, RTC_DATE);
|
||||
ds1286_rtc_write(priv, hrs, RTC_HOURS);
|
||||
ds1286_rtc_write(priv, min, RTC_MINUTES);
|
||||
ds1286_rtc_write(priv, sec, RTC_SECONDS);
|
||||
ds1286_rtc_write(priv, 0, RTC_HUNDREDTH_SECOND);
|
||||
|
||||
ds1286_rtc_write(priv, save_control, RTC_CMD);
|
||||
spin_unlock_irqrestore(&priv->lock, flags);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int ds1286_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
|
||||
{
|
||||
struct ds1286_priv *priv = dev_get_drvdata(dev);
|
||||
unsigned char cmd;
|
||||
unsigned long flags;
|
||||
|
||||
/*
|
||||
* Only the values that we read from the RTC are set. That
|
||||
* means only tm_wday, tm_hour, tm_min.
|
||||
*/
|
||||
spin_lock_irqsave(&priv->lock, flags);
|
||||
alm->time.tm_min = ds1286_rtc_read(priv, RTC_MINUTES_ALARM) & 0x7f;
|
||||
alm->time.tm_hour = ds1286_rtc_read(priv, RTC_HOURS_ALARM) & 0x1f;
|
||||
alm->time.tm_wday = ds1286_rtc_read(priv, RTC_DAY_ALARM) & 0x07;
|
||||
cmd = ds1286_rtc_read(priv, RTC_CMD);
|
||||
spin_unlock_irqrestore(&priv->lock, flags);
|
||||
|
||||
alm->time.tm_min = bcd2bin(alm->time.tm_min);
|
||||
alm->time.tm_hour = bcd2bin(alm->time.tm_hour);
|
||||
alm->time.tm_sec = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int ds1286_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
|
||||
{
|
||||
struct ds1286_priv *priv = dev_get_drvdata(dev);
|
||||
unsigned char hrs, min, sec;
|
||||
|
||||
hrs = alm->time.tm_hour;
|
||||
min = alm->time.tm_min;
|
||||
sec = alm->time.tm_sec;
|
||||
|
||||
if (hrs >= 24)
|
||||
hrs = 0xff;
|
||||
|
||||
if (min >= 60)
|
||||
min = 0xff;
|
||||
|
||||
if (sec != 0)
|
||||
return -EINVAL;
|
||||
|
||||
min = bin2bcd(min);
|
||||
hrs = bin2bcd(hrs);
|
||||
|
||||
spin_lock(&priv->lock);
|
||||
ds1286_rtc_write(priv, hrs, RTC_HOURS_ALARM);
|
||||
ds1286_rtc_write(priv, min, RTC_MINUTES_ALARM);
|
||||
spin_unlock(&priv->lock);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct rtc_class_ops ds1286_ops = {
|
||||
.ioctl = ds1286_ioctl,
|
||||
.proc = ds1286_proc,
|
||||
.read_time = ds1286_read_time,
|
||||
.set_time = ds1286_set_time,
|
||||
.read_alarm = ds1286_read_alarm,
|
||||
.set_alarm = ds1286_set_alarm,
|
||||
};
|
||||
|
||||
static int __devinit ds1286_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct rtc_device *rtc;
|
||||
struct resource *res;
|
||||
struct ds1286_priv *priv;
|
||||
int ret = 0;
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
if (!res)
|
||||
return -ENODEV;
|
||||
priv = kzalloc(sizeof(struct ds1286_priv), GFP_KERNEL);
|
||||
if (!priv)
|
||||
return -ENOMEM;
|
||||
|
||||
priv->size = res->end - res->start + 1;
|
||||
if (!request_mem_region(res->start, priv->size, pdev->name)) {
|
||||
ret = -EBUSY;
|
||||
goto out;
|
||||
}
|
||||
priv->baseaddr = res->start;
|
||||
priv->rtcregs = ioremap(priv->baseaddr, priv->size);
|
||||
if (!priv->rtcregs) {
|
||||
ret = -ENOMEM;
|
||||
goto out;
|
||||
}
|
||||
spin_lock_init(&priv->lock);
|
||||
rtc = rtc_device_register("ds1286", &pdev->dev,
|
||||
&ds1286_ops, THIS_MODULE);
|
||||
if (IS_ERR(rtc)) {
|
||||
ret = PTR_ERR(rtc);
|
||||
goto out;
|
||||
}
|
||||
priv->rtc = rtc;
|
||||
platform_set_drvdata(pdev, priv);
|
||||
return 0;
|
||||
|
||||
out:
|
||||
if (priv->rtc)
|
||||
rtc_device_unregister(priv->rtc);
|
||||
if (priv->rtcregs)
|
||||
iounmap(priv->rtcregs);
|
||||
if (priv->baseaddr)
|
||||
release_mem_region(priv->baseaddr, priv->size);
|
||||
kfree(priv);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int __devexit ds1286_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct ds1286_priv *priv = platform_get_drvdata(pdev);
|
||||
|
||||
rtc_device_unregister(priv->rtc);
|
||||
iounmap(priv->rtcregs);
|
||||
release_mem_region(priv->baseaddr, priv->size);
|
||||
kfree(priv);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver ds1286_platform_driver = {
|
||||
.driver = {
|
||||
.name = "rtc-ds1286",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = ds1286_probe,
|
||||
.remove = __devexit_p(ds1286_remove),
|
||||
};
|
||||
|
||||
static int __init ds1286_init(void)
|
||||
{
|
||||
return platform_driver_register(&ds1286_platform_driver);
|
||||
}
|
||||
|
||||
static void __exit ds1286_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&ds1286_platform_driver);
|
||||
}
|
||||
|
||||
MODULE_AUTHOR("Thomas Bogendoerfer <[email protected]>");
|
||||
MODULE_DESCRIPTION("DS1286 RTC driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_VERSION(DRV_VERSION);
|
||||
MODULE_ALIAS("platform:rtc-ds1286");
|
||||
|
||||
module_init(ds1286_init);
|
||||
module_exit(ds1286_exit);
|
||||
234
drivers/rtc/rtc-m48t35.c
Normal file
234
drivers/rtc/rtc-m48t35.c
Normal file
|
|
@ -0,0 +1,234 @@
|
|||
/*
|
||||
* Driver for the SGS-Thomson M48T35 Timekeeper RAM chip
|
||||
*
|
||||
* Copyright (C) 2000 Silicon Graphics, Inc.
|
||||
* Written by Ulf Carlsson (ulfc@engr.sgi.com)
|
||||
*
|
||||
* Copyright (C) 2008 Thomas Bogendoerfer
|
||||
*
|
||||
* Based on code written by Paul Gortmaker.
|
||||
*
|
||||
* 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/module.h>
|
||||
#include <linux/rtc.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/bcd.h>
|
||||
|
||||
#define DRV_VERSION "1.0"
|
||||
|
||||
struct m48t35_rtc {
|
||||
u8 pad[0x7ff8]; /* starts at 0x7ff8 */
|
||||
u8 control;
|
||||
u8 sec;
|
||||
u8 min;
|
||||
u8 hour;
|
||||
u8 day;
|
||||
u8 date;
|
||||
u8 month;
|
||||
u8 year;
|
||||
};
|
||||
|
||||
#define M48T35_RTC_SET 0x80
|
||||
#define M48T35_RTC_READ 0x40
|
||||
|
||||
struct m48t35_priv {
|
||||
struct rtc_device *rtc;
|
||||
struct m48t35_rtc __iomem *reg;
|
||||
size_t size;
|
||||
unsigned long baseaddr;
|
||||
spinlock_t lock;
|
||||
};
|
||||
|
||||
static int m48t35_read_time(struct device *dev, struct rtc_time *tm)
|
||||
{
|
||||
struct m48t35_priv *priv = dev_get_drvdata(dev);
|
||||
u8 control;
|
||||
|
||||
/*
|
||||
* Only the values that we read from the RTC are set. We leave
|
||||
* tm_wday, tm_yday and tm_isdst untouched. Even though the
|
||||
* RTC has RTC_DAY_OF_WEEK, we ignore it, as it is only updated
|
||||
* by the RTC when initially set to a non-zero value.
|
||||
*/
|
||||
spin_lock_irq(&priv->lock);
|
||||
control = readb(&priv->reg->control);
|
||||
writeb(control | M48T35_RTC_READ, &priv->reg->control);
|
||||
tm->tm_sec = readb(&priv->reg->sec);
|
||||
tm->tm_min = readb(&priv->reg->min);
|
||||
tm->tm_hour = readb(&priv->reg->hour);
|
||||
tm->tm_mday = readb(&priv->reg->date);
|
||||
tm->tm_mon = readb(&priv->reg->month);
|
||||
tm->tm_year = readb(&priv->reg->year);
|
||||
writeb(control, &priv->reg->control);
|
||||
spin_unlock_irq(&priv->lock);
|
||||
|
||||
tm->tm_sec = bcd2bin(tm->tm_sec);
|
||||
tm->tm_min = bcd2bin(tm->tm_min);
|
||||
tm->tm_hour = bcd2bin(tm->tm_hour);
|
||||
tm->tm_mday = bcd2bin(tm->tm_mday);
|
||||
tm->tm_mon = bcd2bin(tm->tm_mon);
|
||||
tm->tm_year = bcd2bin(tm->tm_year);
|
||||
|
||||
/*
|
||||
* Account for differences between how the RTC uses the values
|
||||
* and how they are defined in a struct rtc_time;
|
||||
*/
|
||||
tm->tm_year += 70;
|
||||
if (tm->tm_year <= 69)
|
||||
tm->tm_year += 100;
|
||||
|
||||
tm->tm_mon--;
|
||||
return rtc_valid_tm(tm);
|
||||
}
|
||||
|
||||
static int m48t35_set_time(struct device *dev, struct rtc_time *tm)
|
||||
{
|
||||
struct m48t35_priv *priv = dev_get_drvdata(dev);
|
||||
unsigned char mon, day, hrs, min, sec;
|
||||
unsigned int yrs;
|
||||
u8 control;
|
||||
|
||||
yrs = tm->tm_year + 1900;
|
||||
mon = tm->tm_mon + 1; /* tm_mon starts at zero */
|
||||
day = tm->tm_mday;
|
||||
hrs = tm->tm_hour;
|
||||
min = tm->tm_min;
|
||||
sec = tm->tm_sec;
|
||||
|
||||
if (yrs < 1970)
|
||||
return -EINVAL;
|
||||
|
||||
yrs -= 1970;
|
||||
if (yrs > 255) /* They are unsigned */
|
||||
return -EINVAL;
|
||||
|
||||
if (yrs > 169)
|
||||
return -EINVAL;
|
||||
|
||||
if (yrs >= 100)
|
||||
yrs -= 100;
|
||||
|
||||
sec = bin2bcd(sec);
|
||||
min = bin2bcd(min);
|
||||
hrs = bin2bcd(hrs);
|
||||
day = bin2bcd(day);
|
||||
mon = bin2bcd(mon);
|
||||
yrs = bin2bcd(yrs);
|
||||
|
||||
spin_lock_irq(&priv->lock);
|
||||
control = readb(&priv->reg->control);
|
||||
writeb(control | M48T35_RTC_SET, &priv->reg->control);
|
||||
writeb(yrs, &priv->reg->year);
|
||||
writeb(mon, &priv->reg->month);
|
||||
writeb(day, &priv->reg->date);
|
||||
writeb(hrs, &priv->reg->hour);
|
||||
writeb(min, &priv->reg->min);
|
||||
writeb(sec, &priv->reg->sec);
|
||||
writeb(control, &priv->reg->control);
|
||||
spin_unlock_irq(&priv->lock);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct rtc_class_ops m48t35_ops = {
|
||||
.read_time = m48t35_read_time,
|
||||
.set_time = m48t35_set_time,
|
||||
};
|
||||
|
||||
static int __devinit m48t35_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct rtc_device *rtc;
|
||||
struct resource *res;
|
||||
struct m48t35_priv *priv;
|
||||
int ret = 0;
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
if (!res)
|
||||
return -ENODEV;
|
||||
priv = kzalloc(sizeof(struct m48t35_priv), GFP_KERNEL);
|
||||
if (!priv)
|
||||
return -ENOMEM;
|
||||
|
||||
priv->size = res->end - res->start + 1;
|
||||
/*
|
||||
* kludge: remove the #ifndef after ioc3 resource
|
||||
* conflicts are resolved
|
||||
*/
|
||||
#ifndef CONFIG_SGI_IP27
|
||||
if (!request_mem_region(res->start, priv->size, pdev->name)) {
|
||||
ret = -EBUSY;
|
||||
goto out;
|
||||
}
|
||||
#endif
|
||||
priv->baseaddr = res->start;
|
||||
priv->reg = ioremap(priv->baseaddr, priv->size);
|
||||
if (!priv->reg) {
|
||||
ret = -ENOMEM;
|
||||
goto out;
|
||||
}
|
||||
spin_lock_init(&priv->lock);
|
||||
rtc = rtc_device_register("m48t35", &pdev->dev,
|
||||
&m48t35_ops, THIS_MODULE);
|
||||
if (IS_ERR(rtc)) {
|
||||
ret = PTR_ERR(rtc);
|
||||
goto out;
|
||||
}
|
||||
priv->rtc = rtc;
|
||||
platform_set_drvdata(pdev, priv);
|
||||
return 0;
|
||||
|
||||
out:
|
||||
if (priv->rtc)
|
||||
rtc_device_unregister(priv->rtc);
|
||||
if (priv->reg)
|
||||
iounmap(priv->reg);
|
||||
if (priv->baseaddr)
|
||||
release_mem_region(priv->baseaddr, priv->size);
|
||||
kfree(priv);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int __devexit m48t35_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct m48t35_priv *priv = platform_get_drvdata(pdev);
|
||||
|
||||
rtc_device_unregister(priv->rtc);
|
||||
iounmap(priv->reg);
|
||||
#ifndef CONFIG_SGI_IP27
|
||||
release_mem_region(priv->baseaddr, priv->size);
|
||||
#endif
|
||||
kfree(priv);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver m48t35_platform_driver = {
|
||||
.driver = {
|
||||
.name = "rtc-m48t35",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = m48t35_probe,
|
||||
.remove = __devexit_p(m48t35_remove),
|
||||
};
|
||||
|
||||
static int __init m48t35_init(void)
|
||||
{
|
||||
return platform_driver_register(&m48t35_platform_driver);
|
||||
}
|
||||
|
||||
static void __exit m48t35_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&m48t35_platform_driver);
|
||||
}
|
||||
|
||||
MODULE_AUTHOR("Thomas Bogendoerfer <[email protected]>");
|
||||
MODULE_DESCRIPTION("M48T35 RTC driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_VERSION(DRV_VERSION);
|
||||
MODULE_ALIAS("platform:rtc-m48t35");
|
||||
|
||||
module_init(m48t35_init);
|
||||
module_exit(m48t35_exit);
|
||||
Loading…
Reference in a new issue