static int rtc_busy = 0;
+/* This is the structure layout used by drivers/char/rtc.c, we
+ * support that driver's ioctls so that things are less messy in
+ * userspace.
+ */
+struct rtc_time_generic {
+ int tm_sec;
+ int tm_min;
+ int tm_hour;
+ int tm_mday;
+ int tm_mon;
+ int tm_year;
+ int tm_wday;
+ int tm_yday;
+ int tm_isdst;
+};
+#define RTC_AIE_ON _IO('p', 0x01) /* Alarm int. enable on */
+#define RTC_AIE_OFF _IO('p', 0x02) /* ... off */
+#define RTC_UIE_ON _IO('p', 0x03) /* Update int. enable on */
+#define RTC_UIE_OFF _IO('p', 0x04) /* ... off */
+#define RTC_PIE_ON _IO('p', 0x05) /* Periodic int. enable on */
+#define RTC_PIE_OFF _IO('p', 0x06) /* ... off */
+#define RTC_WIE_ON _IO('p', 0x0f) /* Watchdog int. enable on */
+#define RTC_WIE_OFF _IO('p', 0x10) /* ... off */
+#define RTC_RD_TIME _IOR('p', 0x09, struct rtc_time_generic) /* Read RTC time */
+#define RTC_SET_TIME _IOW('p', 0x0a, struct rtc_time_generic) /* Set RTC time */
+#define RTC_ALM_SET _IOW('p', 0x07, struct rtc_time) /* Set alarm time */
+#define RTC_ALM_READ _IOR('p', 0x08, struct rtc_time) /* Read alarm time */
+#define RTC_IRQP_READ _IOR('p', 0x0b, unsigned long) /* Read IRQ rate */
+#define RTC_IRQP_SET _IOW('p', 0x0c, unsigned long) /* Set IRQ rate */
+#define RTC_EPOCH_READ _IOR('p', 0x0d, unsigned long) /* Read epoch */
+#define RTC_EPOCH_SET _IOW('p', 0x0e, unsigned long) /* Set epoch */
+#define RTC_WKALM_SET _IOW('p', 0x0f, struct rtc_wkalrm)/* Set wakeup alarm*/
+#define RTC_WKALM_RD _IOR('p', 0x10, struct rtc_wkalrm)/* Get wakeup alarm*/
+#define RTC_PLL_GET _IOR('p', 0x11, struct rtc_pll_info) /* Get PLL correction */
+#define RTC_PLL_SET _IOW('p', 0x12, struct rtc_pll_info) /* Set PLL correction */
+
/* Retrieve the current date and time from the real time clock. */
static void get_rtc_time(struct rtc_time *t)
{
- void * __iomem regs = mstk48t02_regs;
+ void __iomem *regs = mstk48t02_regs;
u8 tmp;
spin_lock_irq(&mostek_lock);
/* Set the current date and time inthe real time clock. */
void set_rtc_time(struct rtc_time *t)
{
- void * __iomem regs = mstk48t02_regs;
+ void __iomem *regs = mstk48t02_regs;
u8 tmp;
spin_lock_irq(&mostek_lock);
spin_unlock_irq(&mostek_lock);
}
+static int put_rtc_time_generic(void __user *argp, struct rtc_time *tm)
+{
+ struct rtc_time_generic __user *utm = argp;
+
+ if (__put_user(tm->sec, &utm->tm_sec) ||
+ __put_user(tm->min, &utm->tm_min) ||
+ __put_user(tm->hour, &utm->tm_hour) ||
+ __put_user(tm->dom, &utm->tm_mday) ||
+ __put_user(tm->month, &utm->tm_mon) ||
+ __put_user(tm->year, &utm->tm_year) ||
+ __put_user(tm->dow, &utm->tm_wday) ||
+ __put_user(0, &utm->tm_yday) ||
+ __put_user(0, &utm->tm_isdst))
+ return -EFAULT;
+
+ return 0;
+}
+
+static int get_rtc_time_generic(struct rtc_time *tm, void __user *argp)
+{
+ struct rtc_time_generic __user *utm = argp;
+
+ if (__get_user(tm->sec, &utm->tm_sec) ||
+ __get_user(tm->min, &utm->tm_min) ||
+ __get_user(tm->hour, &utm->tm_hour) ||
+ __get_user(tm->dom, &utm->tm_mday) ||
+ __get_user(tm->month, &utm->tm_mon) ||
+ __get_user(tm->year, &utm->tm_year) ||
+ __get_user(tm->dow, &utm->tm_wday))
+ return -EFAULT;
+
+ return 0;
+}
+
static int rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
unsigned long arg)
{
struct rtc_time rtc_tm;
void __user *argp = (void __user *)arg;
- switch (cmd)
- {
+ switch (cmd) {
+ /* No interrupt support, return an error
+ * compatible with drivers/char/rtc.c
+ */
+ case RTC_AIE_OFF:
+ case RTC_AIE_ON:
+ case RTC_PIE_OFF:
+ case RTC_PIE_ON:
+ case RTC_UIE_OFF:
+ case RTC_UIE_ON:
+ case RTC_IRQP_READ:
+ case RTC_IRQP_SET:
+ case RTC_EPOCH_SET:
+ case RTC_EPOCH_READ:
+ return -EINVAL;
+
case RTCGET:
+ case RTC_RD_TIME:
memset(&rtc_tm, 0, sizeof(struct rtc_time));
get_rtc_time(&rtc_tm);
- if (copy_to_user(argp, &rtc_tm, sizeof(struct rtc_time)))
+ if (cmd == RTCGET) {
+ if (copy_to_user(argp, &rtc_tm,
+ sizeof(struct rtc_time)))
+ return -EFAULT;
+ } else if (put_rtc_time_generic(argp, &rtc_tm))
return -EFAULT;
return 0;
case RTCSET:
+ case RTC_SET_TIME:
if (!capable(CAP_SYS_TIME))
return -EPERM;
- if (copy_from_user(&rtc_tm, argp, sizeof(struct rtc_time)))
+ if (cmd == RTCSET) {
+ if (copy_from_user(&rtc_tm, argp,
+ sizeof(struct rtc_time)))
+ return -EFAULT;
+ } else if (get_rtc_time_generic(&rtc_tm, argp))
return -EFAULT;
set_rtc_time(&rtc_tm);
/* It is possible we are being driven by some other RTC chip
* and thus another RTC driver is handling things.
*/
- if (mstk48t02_regs == 0)
+ if (!mstk48t02_regs)
return -ENODEV;
error = misc_register(&rtc_dev);
printk(KERN_ERR "rtc: unable to get misc minor for Mostek\n");
return error;
}
+ printk("rtc_sun_init: Registered Mostek RTC driver.\n");
return 0;
}
git://git.onelab.eu / linux-2.6.git / blobdiff