On 27.11.18 22:17, Finn Thain wrote:
> Adding Kars to Cc.
Any chance this can get tested on m68k?
Helge
> On Tue, 27 Nov 2018, Helge Deller wrote:
>
>> This patch is a first step to convert the hp_sdc_rtc driver to the new
>> rtc framework.
>>
>> The HP SDC RTC driver is available on HP machines only, which run either
>> a parisc or a m68k processor. I did tested this patch on a parisc
>> machine, but it would be nice if someone with a m68k machine could test
>> it too.
>>
>> Signed-off-by: Helge Deller <deller@xxxxxx>
>>
>> diff --git a/drivers/input/misc/hp_sdc_rtc.c b/drivers/input/misc/hp_sdc_rtc.c
>> index 47eb8ca729fe..c787bde12fce 100644
>> --- a/drivers/input/misc/hp_sdc_rtc.c
>> +++ b/drivers/input/misc/hp_sdc_rtc.c
>> @@ -34,51 +34,27 @@
>> */
>>
>> #include <linux/hp_sdc.h>
>> -#include <linux/errno.h>
>> -#include <linux/types.h>
>> -#include <linux/init.h>
>> #include <linux/module.h>
>> -#include <linux/time.h>
>> -#include <linux/miscdevice.h>
>> -#include <linux/proc_fs.h>
>> -#include <linux/seq_file.h>
>> -#include <linux/poll.h>
>> #include <linux/rtc.h>
>> -#include <linux/mutex.h>
>> #include <linux/semaphore.h>
>>
>> MODULE_AUTHOR("Brian S. Julin <bri@xxxxxxxxx>");
>> MODULE_DESCRIPTION("HP i8042 SDC + MSM-58321 RTC Driver");
>> MODULE_LICENSE("Dual BSD/GPL");
>>
>> -#define RTC_VERSION "1.10d"
>> +#define RTC_VERSION "1.2"
>>
>> -static DEFINE_MUTEX(hp_sdc_rtc_mutex);
>> -static unsigned long epoch = 2000;
>> +static struct rtc_device *rtc;
>>
>> static struct semaphore i8042tregs;
>>
>> -static hp_sdc_irqhook hp_sdc_rtc_isr;
>> -
>> -static struct fasync_struct *hp_sdc_rtc_async_queue;
>> -
>> static DECLARE_WAIT_QUEUE_HEAD(hp_sdc_rtc_wait);
>>
>> -static ssize_t hp_sdc_rtc_read(struct file *file, char __user *buf,
>> - size_t count, loff_t *ppos);
>> -
>> -static long hp_sdc_rtc_unlocked_ioctl(struct file *file,
>> - unsigned int cmd, unsigned long arg);
>> -
>> -static unsigned int hp_sdc_rtc_poll(struct file *file, poll_table *wait);
>> -
>> -static int hp_sdc_rtc_open(struct inode *inode, struct file *file);
>> -static int hp_sdc_rtc_fasync (int fd, struct file *filp, int on);
>> -
>> static void hp_sdc_rtc_isr (int irq, void *dev_id,
>> uint8_t status, uint8_t data)
>> {
>> - return;
>> + /* Notify RTC core on alarm event */
>> + rtc_update_irq(rtc, 1, RTC_IRQF | RTC_AF);
>> }
>>
>> static int hp_sdc_rtc_do_read_bbrtc (struct rtc_time *rtctm)
>> @@ -105,17 +81,18 @@ static int hp_sdc_rtc_do_read_bbrtc (struct rtc_time *rtctm)
>> t.act.semaphore = &tsem;
>> sema_init(&tsem, 0);
>>
>> - if (hp_sdc_enqueue_transaction(&t)) return -1;
>> + if (hp_sdc_enqueue_transaction(&t))
>> + return -EIO;
>>
>> /* Put ourselves to sleep for results. */
>> if (WARN_ON(down_interruptible(&tsem)))
>> - return -1;
>> + return -EIO;
>>
>> /* Check for nonpresence of BBRTC */
>> if (!((tseq[83] | tseq[90] | tseq[69] | tseq[76] |
>> tseq[55] | tseq[62] | tseq[34] | tseq[41] |
>> tseq[20] | tseq[27] | tseq[6] | tseq[13]) & 0x0f))
>> - return -1;
>> + return -ENODEV;
>>
>> memset(rtctm, 0, sizeof(struct rtc_time));
>> rtctm->tm_year = (tseq[83] & 0x0f) + (tseq[90] & 0x0f) * 10;
>> @@ -132,17 +109,24 @@ static int hp_sdc_rtc_do_read_bbrtc (struct rtc_time *rtctm)
>> static int hp_sdc_rtc_read_bbrtc (struct rtc_time *rtctm)
>> {
>> struct rtc_time tm, tm_last;
>> - int i = 0;
>> + int i = 0, ret;
>>
>> /* MSM-58321 has no read latch, so must read twice and compare. */
>>
>> - if (hp_sdc_rtc_do_read_bbrtc(&tm_last)) return -1;
>> - if (hp_sdc_rtc_do_read_bbrtc(&tm)) return -1;
>> + ret = hp_sdc_rtc_do_read_bbrtc(&tm_last);
>> + if (ret)
>> + return ret;
>> + ret = hp_sdc_rtc_do_read_bbrtc(&tm);
>> + if (ret)
>> + return ret;
>>
>> while (memcmp(&tm, &tm_last, sizeof(struct rtc_time))) {
>> - if (i++ > 4) return -1;
>> + if (i++ > 4)
>> + return -EAGAIN;
>> memcpy(&tm_last, &tm, sizeof(struct rtc_time));
>> - if (hp_sdc_rtc_do_read_bbrtc(&tm)) return -1;
>> + ret = hp_sdc_rtc_do_read_bbrtc(&tm);
>> + if (ret)
>> + return ret;
>> }
>>
>> memcpy(rtctm, &tm, sizeof(struct rtc_time));
>> @@ -150,7 +134,6 @@ static int hp_sdc_rtc_read_bbrtc (struct rtc_time *rtctm)
>> return 0;
>> }
>>
>> -
>> static int64_t hp_sdc_rtc_read_i8042timer (uint8_t loadcmd, int numreg)
>> {
>> hp_sdc_transaction t;
>> @@ -178,16 +161,16 @@ static int64_t hp_sdc_rtc_read_i8042timer (uint8_t loadcmd, int numreg)
>>
>> /* Sleep if output regs in use. */
>> if (WARN_ON(down_interruptible(&i8042tregs)))
>> - return -1;
>> + return -EIO;
>>
>> if (hp_sdc_enqueue_transaction(&t)) {
>> up(&i8042tregs);
>> - return -1;
>> + return -EIO;
>> }
>>
>> /* Sleep until results come back. */
>> if (WARN_ON(down_interruptible(&i8042tregs)))
>> - return -1;
>> + return -EIO;
>>
>> up(&i8042tregs);
>>
>> @@ -198,13 +181,15 @@ static int64_t hp_sdc_rtc_read_i8042timer (uint8_t loadcmd, int numreg)
>>
>>
>> /* Read the i8042 real-time clock */
>> -static inline int hp_sdc_rtc_read_rt(struct timespec64 *res) {
>> +static int hp_sdc_rtc_read_rt(struct timespec64 *res)
>> +{
>> int64_t raw;
>> uint32_t tenms;
>> unsigned int days;
>>
>> raw = hp_sdc_rtc_read_i8042timer(HP_SDC_CMD_LOAD_RT, 5);
>> - if (raw < 0) return -1;
>> + if (raw < 0)
>> + return -EIO;
>>
>> tenms = (uint32_t)raw & 0xffffff;
>> days = (unsigned int)(raw >> 24) & 0xffff;
>> @@ -222,7 +207,8 @@ static inline int hp_sdc_rtc_read_fhs(struct timespec64 *res) {
>> unsigned int tenms;
>>
>> raw = hp_sdc_rtc_read_i8042timer(HP_SDC_CMD_LOAD_FHS, 2);
>> - if (raw < 0) return -1;
>> + if (raw < 0)
>> + return -EIO;
>>
>> tenms = (unsigned int)raw & 0xffff;
>>
>> @@ -239,7 +225,8 @@ static inline int hp_sdc_rtc_read_mt(struct timespec64 *res) {
>> uint32_t tenms;
>>
>> raw = hp_sdc_rtc_read_i8042timer(HP_SDC_CMD_LOAD_MT, 3);
>> - if (raw < 0) return -1;
>> + if (raw < 0)
>> + return -EIO;
>>
>> tenms = (uint32_t)raw & 0xffffff;
>>
>> @@ -256,7 +243,8 @@ static inline int hp_sdc_rtc_read_dt(struct timespec64 *res) {
>> uint32_t tenms;
>>
>> raw = hp_sdc_rtc_read_i8042timer(HP_SDC_CMD_LOAD_DT, 3);
>> - if (raw < 0) return -1;
>> + if (raw < 0)
>> + return -EIO;
>>
>> tenms = (uint32_t)raw & 0xffffff;
>>
>> @@ -273,7 +261,8 @@ static inline int hp_sdc_rtc_read_ct(struct timespec64 *res) {
>> uint32_t tenms;
>>
>> raw = hp_sdc_rtc_read_i8042timer(HP_SDC_CMD_LOAD_CT, 3);
>> - if (raw < 0) return -1;
>> + if (raw < 0)
>> + return -EIO;
>>
>> tenms = (uint32_t)raw & 0xffffff;
>>
>> @@ -284,11 +273,11 @@ static inline int hp_sdc_rtc_read_ct(struct timespec64 *res) {
>> }
>>
>>
>> -#if 0 /* not used yet */
>> /* Set the i8042 real-time clock */
>> -static int hp_sdc_rtc_set_rt (struct timeval *setto)
>> +static int hp_sdc_rtc_set_rt(struct rtc_time *tm)
>> {
>> uint32_t tenms;
>> + time64_t seconds;
>> unsigned int days;
>> hp_sdc_transaction t;
>> uint8_t tseq[11] = {
>> @@ -300,17 +289,13 @@ static int hp_sdc_rtc_set_rt (struct timeval *setto)
>>
>> t.endidx = 10;
>>
>> - if (0xffff < setto->tv_sec / 86400) return -1;
>> - days = setto->tv_sec / 86400;
>> - if (0xffff < setto->tv_usec / 1000000 / 86400) return -1;
>> - days += ((setto->tv_sec % 86400) + setto->tv_usec / 1000000) / 86400;
>> - if (days > 0xffff) return -1;
>> -
>> - if (0xffffff < setto->tv_sec) return -1;
>> - tenms = setto->tv_sec * 100;
>> - if (0xffffff < setto->tv_usec / 10000) return -1;
>> - tenms += setto->tv_usec / 10000;
>> - if (tenms > 0xffffff) return -1;
>> + seconds = rtc_tm_to_time64(tm);
>> + days = seconds / 86400;
>> + if (days > 0xffff)
>> + return -EINVAL;
>> + tenms = (seconds % 86400) * 100;
>> + if (tenms > 0xffffff)
>> + return -EINVAL;
>>
>> tseq[3] = (uint8_t)(tenms & 0xff);
>> tseq[4] = (uint8_t)((tenms >> 8) & 0xff);
>> @@ -321,12 +306,14 @@ static int hp_sdc_rtc_set_rt (struct timeval *setto)
>>
>> t.seq = tseq;
>>
>> - if (hp_sdc_enqueue_transaction(&t)) return -1;
>> + if (hp_sdc_enqueue_transaction(&t))
>> + return -EIO;
>> return 0;
>> }
>>
>> /* Set the i8042 fast handshake timer */
>> -static int hp_sdc_rtc_set_fhs (struct timeval *setto)
>> +#if 0
>> +static int hp_sdc_rtc_set_fhs(struct timespec64 *setto)
>> {
>> uint32_t tenms;
>> hp_sdc_transaction t;
>> @@ -337,36 +324,36 @@ static int hp_sdc_rtc_set_fhs (struct timeval *setto)
>>
>> t.endidx = 4;
>>
>> - if (0xffff < setto->tv_sec) return -1;
>> tenms = setto->tv_sec * 100;
>> - if (0xffff < setto->tv_usec / 10000) return -1;
>> - tenms += setto->tv_usec / 10000;
>> - if (tenms > 0xffff) return -1;
>> + tenms += setto->tv_nsec / 10000 / 1000;
>> + if (tenms > 0xffff)
>> + return -EINVAL;
>>
>> tseq[3] = (uint8_t)(tenms & 0xff);
>> tseq[4] = (uint8_t)((tenms >> 8) & 0xff);
>>
>> t.seq = tseq;
>>
>> - if (hp_sdc_enqueue_transaction(&t)) return -1;
>> + if (hp_sdc_enqueue_transaction(&t))
>> + return -EIO;
>> return 0;
>> }
>> -
>> +#endif
>>
>> /* Set the i8042 match timer (a.k.a. alarm) */
>> -#define hp_sdc_rtc_set_mt (setto) \
>> +#define hp_sdc_rtc_set_mt(setto) \
>> hp_sdc_rtc_set_i8042timer(setto, HP_SDC_CMD_SET_MT)
>>
>> /* Set the i8042 delay timer */
>> -#define hp_sdc_rtc_set_dt (setto) \
>> +#define hp_sdc_rtc_set_dt(setto) \
>> hp_sdc_rtc_set_i8042timer(setto, HP_SDC_CMD_SET_DT)
>>
>> /* Set the i8042 cycle timer (a.k.a. periodic) */
>> -#define hp_sdc_rtc_set_ct (setto) \
>> +#define hp_sdc_rtc_set_ct(setto) \
>> hp_sdc_rtc_set_i8042timer(setto, HP_SDC_CMD_SET_CT)
>>
>> /* Set one of the i8042 3-byte wide timers */
>> -static int hp_sdc_rtc_set_i8042timer (struct timeval *setto, uint8_t setcmd)
>> +static int hp_sdc_rtc_set_i8042timer(struct timespec64 *setto, uint8_t setcmd)
>> {
>> uint32_t tenms;
>> hp_sdc_transaction t;
>> @@ -377,58 +364,96 @@ static int hp_sdc_rtc_set_i8042timer (struct timeval *setto, uint8_t setcmd)
>>
>> t.endidx = 6;
>>
>> - if (0xffffff < setto->tv_sec) return -1;
>> + if (setto->tv_sec > 0xffffff)
>> + return -EINVAL;
>> tenms = setto->tv_sec * 100;
>> - if (0xffffff < setto->tv_usec / 10000) return -1;
>> - tenms += setto->tv_usec / 10000;
>> - if (tenms > 0xffffff) return -1;
>> + if (setto->tv_nsec / 10000 / 1000 > 0xffffff)
>> + return -EINVAL;
>> + tenms += setto->tv_nsec / 10000 / 1000;
>> + if (tenms > 0xffffff)
>> + return -EINVAL;
>>
>> tseq[1] = setcmd;
>> tseq[3] = (uint8_t)(tenms & 0xff);
>> tseq[4] = (uint8_t)((tenms >> 8) & 0xff);
>> tseq[5] = (uint8_t)((tenms >> 16) & 0xff);
>>
>> - t.seq = tseq;
>> + t.seq = tseq;
>>
>> if (hp_sdc_enqueue_transaction(&t)) {
>> - return -1;
>> + return -EIO;
>> }
>> return 0;
>> }
>> -#endif
>>
>> -static ssize_t hp_sdc_rtc_read(struct file *file, char __user *buf,
>> - size_t count, loff_t *ppos) {
>> - ssize_t retval;
>> -
>> - if (count < sizeof(unsigned long))
>> - return -EINVAL;
>> -
>> - retval = put_user(68, (unsigned long __user *)buf);
>> - return retval;
>> +static int hp_sdc_rtc_get_time(struct device *dev, struct rtc_time *tm)
>> +{
>> + return hp_sdc_rtc_read_bbrtc(tm);
>> }
>>
>> -static __poll_t hp_sdc_rtc_poll(struct file *file, poll_table *wait)
>> +static int hp_sdc_rtc_set_time(struct device *dev, struct rtc_time *tm)
>> {
>> - unsigned long l;
>> + if (!rtc_valid_tm(tm))
>> + return -EINVAL;
>>
>> - l = 0;
>> - if (l != 0)
>> - return EPOLLIN | EPOLLRDNORM;
>> - return 0;
>> + return hp_sdc_rtc_set_rt(tm);
>> }
>>
>> -static int hp_sdc_rtc_open(struct inode *inode, struct file *file)
>> +static int hp_sdc_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *wa)
>> {
>> - return 0;
>> + /* Read the present alarm time */
>> + int ret;
>> + struct timespec64 ttime;
>> + struct rtc_time *wtime = &wa->time;
>> +
>> + ret = hp_sdc_rtc_read_mt(&ttime);
>> + if (ret)
>> + return ret;
>> + ret = hp_sdc_rtc_read_bbrtc(wtime);
>> + if (ret)
>> + return ret;
>> +
>> + wtime->tm_hour = ttime.tv_sec / 3600; ttime.tv_sec %= 3600;
>> + wtime->tm_min = ttime.tv_sec / 60; ttime.tv_sec %= 60;
>> + wtime->tm_sec = ttime.tv_sec;
>> +
>> + wa->enabled = 0;
>> + wa->pending = 0;
>> +
>> + return 0;
>> }
>>
>> -static int hp_sdc_rtc_fasync (int fd, struct file *filp, int on)
>> +static int hp_sdc_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *wa)
>> {
>> - return fasync_helper (fd, filp, on, &hp_sdc_rtc_async_queue);
>> + /* Set the alarm time */
>> + struct timespec64 ttime;
>> +
>> + /*
>> + * This expects a struct hp_sdc_rtc_time. Writing 0xff means
>> + * "don't care" or "match all" for PC timers. The HP SDC
>> + * does not support that perk, but it could be emulated fairly
>> + * easily. Only the tm_hour, tm_min and tm_sec are used.
>> + * We could do it with 10ms accuracy with the HP SDC, if the
>> + * rtc interface left us a way to do that.
>> + */
>> +
>> + if (wa->time.tm_hour > 23)
>> + return -EINVAL;
>> + if (wa->time.tm_min > 59)
>> + return -EINVAL;
>> + if (wa->time.tm_sec > 59)
>> + return -EINVAL;
>> +
>> + ttime.tv_sec = wa->time.tm_hour * 3600 +
>> + wa->time.tm_min * 60 + wa->time.tm_sec;
>> + ttime.tv_nsec = 0;
>> + if (hp_sdc_rtc_set_mt(&ttime))
>> + return -EIO;
>> +
>> + return 0;
>> }
>>
>> -static int hp_sdc_rtc_proc_show(struct seq_file *m, void *v)
>> +static int hp_sdc_rtc_proc(struct device *dev, struct seq_file *m)
>> {
>> #define YN(bit) ("no")
>> #define NY(bit) ("yes")
>> @@ -442,11 +467,10 @@ static int hp_sdc_rtc_proc_show(struct seq_file *m, void *v)
>> } else {
>> seq_printf(m,
>> "rtc_time\t: %02d:%02d:%02d\n"
>> - "rtc_date\t: %04d-%02d-%02d\n"
>> - "rtc_epoch\t: %04lu\n",
>> + "rtc_date\t: %04d-%02d-%02d\n",
>> tm.tm_hour, tm.tm_min, tm.tm_sec,
>> tm.tm_year + 1900, tm.tm_mon + 1,
>> - tm.tm_mday, epoch);
>> + tm.tm_mday);
>> }
>>
>> if (hp_sdc_rtc_read_rt(&tv)) {
>> @@ -509,185 +533,42 @@ static int hp_sdc_rtc_proc_show(struct seq_file *m, void *v)
>> #undef NY
>> }
>>
>> -static int hp_sdc_rtc_ioctl(struct file *file,
>> +static int hp_sdc_rtc_ioctl(struct device *dev,
>> unsigned int cmd, unsigned long arg)
>> {
>> -#if 1
>> - return -EINVAL;
>> -#else
>> -
>> - struct rtc_time wtime;
>> - struct timeval ttime;
>> - int use_wtime = 0;
>> -
>> - /* This needs major work. */
>> -
>> - switch (cmd) {
>> -
>> - case RTC_AIE_OFF: /* Mask alarm int. enab. bit */
>> - case RTC_AIE_ON: /* Allow alarm interrupts. */
>> + switch (cmd) {
>> + case RTC_AIE_OFF: /* Mask alarm int. enab. bit */
>> + case RTC_AIE_ON: /* Allow alarm interrupts. */
>> case RTC_PIE_OFF: /* Mask periodic int. enab. bit */
>> - case RTC_PIE_ON: /* Allow periodic ints */
>> - case RTC_UIE_ON: /* Allow ints for RTC updates. */
>> - case RTC_UIE_OFF: /* Allow ints for RTC updates. */
>> - {
>> + case RTC_PIE_ON: /* Allow periodic ints */
>> + case RTC_UIE_ON: /* Allow ints for RTC updates. */
>> + case RTC_UIE_OFF: /* Allow ints for RTC updates. */
>> + {
>> /* We cannot mask individual user timers and we
>> cannot tell them apart when they occur, so it
>> would be disingenuous to succeed these IOCTLs */
>> return -EINVAL;
>> - }
>> - case RTC_ALM_READ: /* Read the present alarm time */
>> - {
>> - if (hp_sdc_rtc_read_mt(&ttime)) return -EFAULT;
>> - if (hp_sdc_rtc_read_bbrtc(&wtime)) return -EFAULT;
>> -
>> - wtime.tm_hour = ttime.tv_sec / 3600; ttime.tv_sec %= 3600;
>> - wtime.tm_min = ttime.tv_sec / 60; ttime.tv_sec %= 60;
>> - wtime.tm_sec = ttime.tv_sec;
>> -
>> - break;
>> - }
>> - case RTC_IRQP_READ: /* Read the periodic IRQ rate. */
>> - {
>> - return put_user(hp_sdc_rtc_freq, (unsigned long *)arg);
>> - }
>> - case RTC_IRQP_SET: /* Set periodic IRQ rate. */
>> - {
>> - /*
>> - * The max we can do is 100Hz.
>> - */
>> -
>> - if ((arg < 1) || (arg > 100)) return -EINVAL;
>> - ttime.tv_sec = 0;
>> - ttime.tv_usec = 1000000 / arg;
>> - if (hp_sdc_rtc_set_ct(&ttime)) return -EFAULT;
>> - hp_sdc_rtc_freq = arg;
>> - return 0;
>> - }
>> - case RTC_ALM_SET: /* Store a time into the alarm */
>> - {
>> - /*
>> - * This expects a struct hp_sdc_rtc_time. Writing 0xff means
>> - * "don't care" or "match all" for PC timers. The HP SDC
>> - * does not support that perk, but it could be emulated fairly
>> - * easily. Only the tm_hour, tm_min and tm_sec are used.
>> - * We could do it with 10ms accuracy with the HP SDC, if the
>> - * rtc interface left us a way to do that.
>> - */
>> - struct hp_sdc_rtc_time alm_tm;
>> -
>> - if (copy_from_user(&alm_tm, (struct hp_sdc_rtc_time*)arg,
>> - sizeof(struct hp_sdc_rtc_time)))
>> - return -EFAULT;
>> -
>> - if (alm_tm.tm_hour > 23) return -EINVAL;
>> - if (alm_tm.tm_min > 59) return -EINVAL;
>> - if (alm_tm.tm_sec > 59) return -EINVAL;
>> -
>> - ttime.sec = alm_tm.tm_hour * 3600 +
>> - alm_tm.tm_min * 60 + alm_tm.tm_sec;
>> - ttime.usec = 0;
>> - if (hp_sdc_rtc_set_mt(&ttime)) return -EFAULT;
>> - return 0;
>> - }
>> - case RTC_RD_TIME: /* Read the time/date from RTC */
>> - {
>> - if (hp_sdc_rtc_read_bbrtc(&wtime)) return -EFAULT;
>> - break;
>> - }
>> - case RTC_SET_TIME: /* Set the RTC */
>> - {
>> - struct rtc_time hp_sdc_rtc_tm;
>> - unsigned char mon, day, hrs, min, sec, leap_yr;
>> - unsigned int yrs;
>> -
>> - if (!capable(CAP_SYS_TIME))
>> - return -EACCES;
>> - if (copy_from_user(&hp_sdc_rtc_tm, (struct rtc_time *)arg,
>> - sizeof(struct rtc_time)))
>> - return -EFAULT;
>> -
>> - yrs = hp_sdc_rtc_tm.tm_year + 1900;
>> - mon = hp_sdc_rtc_tm.tm_mon + 1; /* tm_mon starts at zero */
>> - day = hp_sdc_rtc_tm.tm_mday;
>> - hrs = hp_sdc_rtc_tm.tm_hour;
>> - min = hp_sdc_rtc_tm.tm_min;
>> - sec = hp_sdc_rtc_tm.tm_sec;
>> -
>> - if (yrs < 1970)
>> - return -EINVAL;
>> -
>> - leap_yr = ((!(yrs % 4) && (yrs % 100)) || !(yrs % 400));
>> -
>> - if ((mon > 12) || (day == 0))
>> - return -EINVAL;
>> - if (day > (days_in_mo[mon] + ((mon == 2) && leap_yr)))
>> - return -EINVAL;
>> - if ((hrs >= 24) || (min >= 60) || (sec >= 60))
>> - return -EINVAL;
>> -
>> - if ((yrs -= eH) > 255) /* They are unsigned */
>> - return -EINVAL;
>> -
>> -
>> - return 0;
>> - }
>> - case RTC_EPOCH_READ: /* Read the epoch. */
>> - {
>> - return put_user (epoch, (unsigned long *)arg);
>> - }
>> - case RTC_EPOCH_SET: /* Set the epoch. */
>> - {
>> - /*
>> - * There were no RTC clocks before 1900.
>> - */
>> - if (arg < 1900)
>> - return -EINVAL;
>> - if (!capable(CAP_SYS_TIME))
>> - return -EACCES;
>> -
>> - epoch = arg;
>> - return 0;
>> - }
>> - default:
>> - return -EINVAL;
>> - }
>> - return copy_to_user((void *)arg, &wtime, sizeof wtime) ? -EFAULT : 0;
>> -#endif
>> -}
>> -
>> -static long hp_sdc_rtc_unlocked_ioctl(struct file *file,
>> - unsigned int cmd, unsigned long arg)
>> -{
>> - int ret;
>> -
>> - mutex_lock(&hp_sdc_rtc_mutex);
>> - ret = hp_sdc_rtc_ioctl(file, cmd, arg);
>> - mutex_unlock(&hp_sdc_rtc_mutex);
>> -
>> - return ret;
>> + }
>> + default:
>> + return -ENOIOCTLCMD;
>> + }
>> + return 0;
>> }
>>
>> -
>> -static const struct file_operations hp_sdc_rtc_fops = {
>> - .owner = THIS_MODULE,
>> - .llseek = no_llseek,
>> - .read = hp_sdc_rtc_read,
>> - .poll = hp_sdc_rtc_poll,
>> - .unlocked_ioctl = hp_sdc_rtc_unlocked_ioctl,
>> - .open = hp_sdc_rtc_open,
>> - .fasync = hp_sdc_rtc_fasync,
>> -};
>> -
>> -static struct miscdevice hp_sdc_rtc_dev = {
>> - .minor = RTC_MINOR,
>> - .name = "rtc_HIL",
>> - .fops = &hp_sdc_rtc_fops
>> +static const struct rtc_class_ops hp_sdc_rtc_ops = {
>> + .ioctl = hp_sdc_rtc_ioctl,
>> + .proc = hp_sdc_rtc_proc,
>> + .read_time = hp_sdc_rtc_get_time,
>> + .set_time = hp_sdc_rtc_set_time,
>> + .read_alarm = hp_sdc_rtc_read_alarm,
>> + .set_alarm = hp_sdc_rtc_set_alarm,
>> + // int (*alarm_irq_enable)(struct device *, unsigned int enabled);
>> };
>>
>> static int __init hp_sdc_rtc_init(void)
>> {
>> int ret;
>> + struct rtc_time tm;
>>
>> #ifdef __mc68000__
>> if (!MACH_IS_HP300)
>> @@ -696,14 +577,22 @@ static int __init hp_sdc_rtc_init(void)
>>
>> sema_init(&i8042tregs, 1);
>>
>> + /* check if BBRTC is available */
>> + ret = hp_sdc_rtc_read_bbrtc(&tm);
>> + if (ret) {
>> + pr_info("hil-rtc: BBRTC not available.");
>> + return -ENODEV;
>> + }
>> +
>> if ((ret = hp_sdc_request_timer_irq(&hp_sdc_rtc_isr)))
>> return ret;
>> - if (misc_register(&hp_sdc_rtc_dev) != 0)
>> - printk(KERN_INFO "Could not register misc. dev for i8042 rtc\n");
>>
>> - proc_create_single("driver/rtc", 0, NULL, hp_sdc_rtc_proc_show);
>> + rtc = devm_rtc_device_register(hp_sdc_get_sdc_device(),
>> + "hil-rtc", &hp_sdc_rtc_ops, THIS_MODULE);
>> + if (IS_ERR(rtc))
>> + return PTR_ERR(rtc);
>>
>> - printk(KERN_INFO "HP i8042 SDC + MSM-58321 RTC support loaded "
>> + pr_info("hil-rtc: HP i8042 SDC + MSM-58321 RTC support loaded "
>> "(RTC v " RTC_VERSION ")\n");
>>
>> return 0;
>> @@ -711,10 +600,9 @@ static int __init hp_sdc_rtc_init(void)
>>
>> static void __exit hp_sdc_rtc_exit(void)
>> {
>> - remove_proc_entry ("driver/rtc", NULL);
>> - misc_deregister(&hp_sdc_rtc_dev);
>> + devm_rtc_device_unregister(hp_sdc_get_sdc_device(), rtc);
>> hp_sdc_release_timer_irq(hp_sdc_rtc_isr);
>> - printk(KERN_INFO "HP i8042 SDC + MSM-58321 RTC support unloaded\n");
>> + pr_info("hil-rtc: HP i8042 SDC + MSM-58321 RTC support unloaded\n");
>> }
>>
>> module_init(hp_sdc_rtc_init);
>> diff --git a/drivers/input/serio/hp_sdc.c b/drivers/input/serio/hp_sdc.c
>> index 0b8a25c58d02..3e0ad6a4907f 100644
>> --- a/drivers/input/serio/hp_sdc.c
>> +++ b/drivers/input/serio/hp_sdc.c
>> @@ -110,6 +110,17 @@ MODULE_PARM_DESC(no_hpsdc, "Do not enable HP SDC driver.");
>>
>> static hp_i8042_sdc hp_sdc; /* All driver state is kept in here. */
>>
>> +struct device *hp_sdc_get_sdc_device(void)
>> +{
>> +#if defined(__hppa__)
>> + return &hp_sdc.dev->dev;
>> +#elif defined(__mc68000__)
>> + /* hp_sdc.dev is 1, so return NULL instead. */
>> + return NULL;
>> +#endif
>> +}
>> +EXPORT_SYMBOL(hp_sdc_get_sdc_device);
>> +
>> /*************** primitives for use in any context *********************/
>> static inline uint8_t hp_sdc_status_in8(void)
>> {
>> diff --git a/include/linux/hp_sdc.h b/include/linux/hp_sdc.h
>> index 6f1dee7e67e0..8988e32adebd 100644
>> --- a/include/linux/hp_sdc.h
>> +++ b/include/linux/hp_sdc.h
>> @@ -298,4 +298,6 @@ typedef struct {
>>
>> } hp_i8042_sdc;
>>
>> +struct device *hp_sdc_get_sdc_device(void);
>> +
>> #endif /* _LINUX_HP_SDC_H */
>>
