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2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376 
 kernel/drivers/input/misc/hp_sdc_rtc.c
....@@ -53,27 +53,9 @@
5353 
5454 #define RTC_VERSION "1.10d"
5555 
56
-static DEFINE_MUTEX(hp_sdc_rtc_mutex);
5756 static unsigned long epoch = 2000;
5857 
5958 static struct semaphore i8042tregs;
60
-
61
-static hp_sdc_irqhook hp_sdc_rtc_isr;
62
-
63
-static struct fasync_struct *hp_sdc_rtc_async_queue;
64
-
65
-static DECLARE_WAIT_QUEUE_HEAD(hp_sdc_rtc_wait);
66
-
67
-static ssize_t hp_sdc_rtc_read(struct file *file, char __user *buf,
68
-			       size_t count, loff_t *ppos);
69
-
70
-static long hp_sdc_rtc_unlocked_ioctl(struct file *file,
71
-				      unsigned int cmd, unsigned long arg);
72
-
73
-static unsigned int hp_sdc_rtc_poll(struct file *file, poll_table *wait);
74
-
75
-static int hp_sdc_rtc_open(struct inode *inode, struct file *file);
76
-static int hp_sdc_rtc_fasync (int fd, struct file *filp, int on);
7759 
7860 static void hp_sdc_rtc_isr (int irq, void *dev_id, 
7961 			    uint8_t status, uint8_t data) 
....@@ -283,151 +265,6 @@
283265 	return 0;
284266 }
285267 
286
-
287
-#if 0 /* not used yet */
288
-/* Set the i8042 real-time clock */
289
-static int hp_sdc_rtc_set_rt (struct timeval *setto)
290
-{
291
-	uint32_t tenms;
292
-	unsigned int days;
293
-	hp_sdc_transaction t;
294
-	uint8_t tseq[11] = {
295
-		HP_SDC_ACT_PRECMD | HP_SDC_ACT_DATAOUT,
296
-		HP_SDC_CMD_SET_RTMS, 3, 0, 0, 0,
297
-		HP_SDC_ACT_PRECMD | HP_SDC_ACT_DATAOUT,
298
-		HP_SDC_CMD_SET_RTD, 2, 0, 0 
299
-	};
300
-
301
-	t.endidx = 10;
302
-
303
-	if (0xffff < setto->tv_sec / 86400) return -1;
304
-	days = setto->tv_sec / 86400;
305
-	if (0xffff < setto->tv_usec / 1000000 / 86400) return -1;
306
-	days += ((setto->tv_sec % 86400) + setto->tv_usec / 1000000) / 86400;
307
-	if (days > 0xffff) return -1;
308
-
309
-	if (0xffffff < setto->tv_sec) return -1;
310
-	tenms  = setto->tv_sec * 100;
311
-	if (0xffffff < setto->tv_usec / 10000) return -1;
312
-	tenms += setto->tv_usec / 10000;
313
-	if (tenms > 0xffffff) return -1;
314
-
315
-	tseq[3] = (uint8_t)(tenms & 0xff);
316
-	tseq[4] = (uint8_t)((tenms >> 8)  & 0xff);
317
-	tseq[5] = (uint8_t)((tenms >> 16) & 0xff);
318
-
319
-	tseq[9] = (uint8_t)(days & 0xff);
320
-	tseq[10] = (uint8_t)((days >> 8) & 0xff);
321
-
322
-	t.seq =	tseq;
323
-
324
-	if (hp_sdc_enqueue_transaction(&t)) return -1;
325
-	return 0;
326
-}
327
-
328
-/* Set the i8042 fast handshake timer */
329
-static int hp_sdc_rtc_set_fhs (struct timeval *setto)
330
-{
331
-	uint32_t tenms;
332
-	hp_sdc_transaction t;
333
-	uint8_t tseq[5] = {
334
-		HP_SDC_ACT_PRECMD | HP_SDC_ACT_DATAOUT,
335
-		HP_SDC_CMD_SET_FHS, 2, 0, 0
336
-	};
337
-
338
-	t.endidx = 4;
339
-
340
-	if (0xffff < setto->tv_sec) return -1;
341
-	tenms  = setto->tv_sec * 100;
342
-	if (0xffff < setto->tv_usec / 10000) return -1;
343
-	tenms += setto->tv_usec / 10000;
344
-	if (tenms > 0xffff) return -1;
345
-
346
-	tseq[3] = (uint8_t)(tenms & 0xff);
347
-	tseq[4] = (uint8_t)((tenms >> 8)  & 0xff);
348
-
349
-	t.seq =	tseq;
350
-
351
-	if (hp_sdc_enqueue_transaction(&t)) return -1;
352
-	return 0;
353
-}
354
-
355
-
356
-/* Set the i8042 match timer (a.k.a. alarm) */
357
-#define hp_sdc_rtc_set_mt (setto) \
358
-	hp_sdc_rtc_set_i8042timer(setto, HP_SDC_CMD_SET_MT)
359
-
360
-/* Set the i8042 delay timer */
361
-#define hp_sdc_rtc_set_dt (setto) \
362
-	hp_sdc_rtc_set_i8042timer(setto, HP_SDC_CMD_SET_DT)
363
-
364
-/* Set the i8042 cycle timer (a.k.a. periodic) */
365
-#define hp_sdc_rtc_set_ct (setto) \
366
-	hp_sdc_rtc_set_i8042timer(setto, HP_SDC_CMD_SET_CT)
367
-
368
-/* Set one of the i8042 3-byte wide timers */
369
-static int hp_sdc_rtc_set_i8042timer (struct timeval *setto, uint8_t setcmd)
370
-{
371
-	uint32_t tenms;
372
-	hp_sdc_transaction t;
373
-	uint8_t tseq[6] = {
374
-		HP_SDC_ACT_PRECMD | HP_SDC_ACT_DATAOUT,
375
-		0, 3, 0, 0, 0
376
-	};
377
-
378
-	t.endidx = 6;
379
-
380
-	if (0xffffff < setto->tv_sec) return -1;
381
-	tenms  = setto->tv_sec * 100;
382
-	if (0xffffff < setto->tv_usec / 10000) return -1;
383
-	tenms += setto->tv_usec / 10000;
384
-	if (tenms > 0xffffff) return -1;
385
-
386
-	tseq[1] = setcmd;
387
-	tseq[3] = (uint8_t)(tenms & 0xff);
388
-	tseq[4] = (uint8_t)((tenms >> 8)  & 0xff);
389
-	tseq[5] = (uint8_t)((tenms >> 16)  & 0xff);
390
-
391
-	t.seq =			tseq;
392
-
393
-	if (hp_sdc_enqueue_transaction(&t)) { 
394
-		return -1;
395
-	}
396
-	return 0;
397
-}
398
-#endif
399
-
400
-static ssize_t hp_sdc_rtc_read(struct file *file, char __user *buf,
401
-			       size_t count, loff_t *ppos) {
402
-	ssize_t retval;
403
-
404
-        if (count < sizeof(unsigned long))
405
-                return -EINVAL;
406
-
407
-	retval = put_user(68, (unsigned long __user *)buf);
408
-	return retval;
409
-}
410
-
411
-static __poll_t hp_sdc_rtc_poll(struct file *file, poll_table *wait)
412
-{
413
-        unsigned long l;
414
-
415
-	l = 0;
416
-        if (l != 0)
417
-                return EPOLLIN | EPOLLRDNORM;
418
-        return 0;
419
-}
420
-
421
-static int hp_sdc_rtc_open(struct inode *inode, struct file *file)
422
-{
423
-        return 0;
424
-}
425
-
426
-static int hp_sdc_rtc_fasync (int fd, struct file *filp, int on)
427
-{
428
-        return fasync_helper (fd, filp, on, &hp_sdc_rtc_async_queue);
429
-}
430
-
431268 static int hp_sdc_rtc_proc_show(struct seq_file *m, void *v)
432269 {
433270 #define YN(bit) ("no")
....@@ -441,12 +278,10 @@
441278 		seq_puts(m, "BBRTC\t\t: READ FAILED!\n");
442279 	} else {
443280 		seq_printf(m,
444
-			     "rtc_time\t: %02d:%02d:%02d\n"
445
-			     "rtc_date\t: %04d-%02d-%02d\n"
281
+			     "rtc_time\t: %ptRt\n"
282
+			     "rtc_date\t: %ptRd\n"
446283 			     "rtc_epoch\t: %04lu\n",
447
-			     tm.tm_hour, tm.tm_min, tm.tm_sec,
448
-			     tm.tm_year + 1900, tm.tm_mon + 1, 
449
-			     tm.tm_mday, epoch);
284
+			     &tm, &tm, epoch);
450285 	}
451286 
452287 	if (hp_sdc_rtc_read_rt(&tv)) {
....@@ -509,182 +344,6 @@
509344 #undef NY
510345 }
511346 
512
-static int hp_sdc_rtc_ioctl(struct file *file, 
513
-			    unsigned int cmd, unsigned long arg)
514
-{
515
-#if 1
516
-	return -EINVAL;
517
-#else
518
-	
519
-        struct rtc_time wtime; 
520
-	struct timeval ttime;
521
-	int use_wtime = 0;
522
-
523
-	/* This needs major work. */
524
-
525
-        switch (cmd) {
526
-
527
-        case RTC_AIE_OFF:       /* Mask alarm int. enab. bit    */
528
-        case RTC_AIE_ON:        /* Allow alarm interrupts.      */
529
-	case RTC_PIE_OFF:       /* Mask periodic int. enab. bit */
530
-        case RTC_PIE_ON:        /* Allow periodic ints          */
531
-        case RTC_UIE_ON:        /* Allow ints for RTC updates.  */
532
-        case RTC_UIE_OFF:       /* Allow ints for RTC updates.  */
533
-        {
534
-		/* We cannot mask individual user timers and we
535
-		   cannot tell them apart when they occur, so it 
536
-		   would be disingenuous to succeed these IOCTLs */
537
-		return -EINVAL;
538
-        }
539
-        case RTC_ALM_READ:      /* Read the present alarm time */
540
-        {
541
-		if (hp_sdc_rtc_read_mt(&ttime)) return -EFAULT;
542
-		if (hp_sdc_rtc_read_bbrtc(&wtime)) return -EFAULT;
543
-
544
-		wtime.tm_hour = ttime.tv_sec / 3600;  ttime.tv_sec %= 3600;
545
-		wtime.tm_min  = ttime.tv_sec / 60;    ttime.tv_sec %= 60;
546
-		wtime.tm_sec  = ttime.tv_sec;
547
-                
548
-		break;
549
-        }
550
-        case RTC_IRQP_READ:     /* Read the periodic IRQ rate.  */
551
-        {
552
-                return put_user(hp_sdc_rtc_freq, (unsigned long *)arg);
553
-        }
554
-        case RTC_IRQP_SET:      /* Set periodic IRQ rate.       */
555
-        {
556
-                /* 
557
-                 * The max we can do is 100Hz.
558
-		 */
559
-
560
-                if ((arg < 1) || (arg > 100)) return -EINVAL;
561
-		ttime.tv_sec = 0;
562
-		ttime.tv_usec = 1000000 / arg;
563
-		if (hp_sdc_rtc_set_ct(&ttime)) return -EFAULT;
564
-		hp_sdc_rtc_freq = arg;
565
-                return 0;
566
-        }
567
-        case RTC_ALM_SET:       /* Store a time into the alarm */
568
-        {
569
-                /*
570
-                 * This expects a struct hp_sdc_rtc_time. Writing 0xff means
571
-                 * "don't care" or "match all" for PC timers.  The HP SDC
572
-		 * does not support that perk, but it could be emulated fairly
573
-		 * easily.  Only the tm_hour, tm_min and tm_sec are used.
574
-		 * We could do it with 10ms accuracy with the HP SDC, if the 
575
-		 * rtc interface left us a way to do that.
576
-                 */
577
-                struct hp_sdc_rtc_time alm_tm;
578
-
579
-                if (copy_from_user(&alm_tm, (struct hp_sdc_rtc_time*)arg,
580
-                                   sizeof(struct hp_sdc_rtc_time)))
581
-                       return -EFAULT;
582
-
583
-                if (alm_tm.tm_hour > 23) return -EINVAL;
584
-		if (alm_tm.tm_min  > 59) return -EINVAL;
585
-		if (alm_tm.tm_sec  > 59) return -EINVAL;  
586
-
587
-		ttime.sec = alm_tm.tm_hour * 3600 + 
588
-		  alm_tm.tm_min * 60 + alm_tm.tm_sec;
589
-		ttime.usec = 0;
590
-		if (hp_sdc_rtc_set_mt(&ttime)) return -EFAULT;
591
-                return 0;
592
-        }
593
-        case RTC_RD_TIME:       /* Read the time/date from RTC  */
594
-        {
595
-		if (hp_sdc_rtc_read_bbrtc(&wtime)) return -EFAULT;
596
-                break;
597
-        }
598
-        case RTC_SET_TIME:      /* Set the RTC */
599
-        {
600
-                struct rtc_time hp_sdc_rtc_tm;
601
-                unsigned char mon, day, hrs, min, sec, leap_yr;
602
-                unsigned int yrs;
603
-
604
-                if (!capable(CAP_SYS_TIME))
605
-                        return -EACCES;
606
-		if (copy_from_user(&hp_sdc_rtc_tm, (struct rtc_time *)arg,
607
-                                   sizeof(struct rtc_time)))
608
-                        return -EFAULT;
609
-
610
-                yrs = hp_sdc_rtc_tm.tm_year + 1900;
611
-                mon = hp_sdc_rtc_tm.tm_mon + 1;   /* tm_mon starts at zero */
612
-                day = hp_sdc_rtc_tm.tm_mday;
613
-                hrs = hp_sdc_rtc_tm.tm_hour;
614
-                min = hp_sdc_rtc_tm.tm_min;
615
-                sec = hp_sdc_rtc_tm.tm_sec;
616
-
617
-                if (yrs < 1970)
618
-                        return -EINVAL;
619
-
620
-                leap_yr = ((!(yrs % 4) && (yrs % 100)) || !(yrs % 400));
621
-
622
-                if ((mon > 12) || (day == 0))
623
-                        return -EINVAL;
624
-                if (day > (days_in_mo[mon] + ((mon == 2) && leap_yr)))
625
-                        return -EINVAL;
626
-		if ((hrs >= 24) || (min >= 60) || (sec >= 60))
627
-                        return -EINVAL;
628
-
629
-                if ((yrs -= eH) > 255)    /* They are unsigned */
630
-                        return -EINVAL;
631
-
632
-
633
-                return 0;
634
-        }
635
-        case RTC_EPOCH_READ:    /* Read the epoch.      */
636
-        {
637
-                return put_user (epoch, (unsigned long *)arg);
638
-        }
639
-        case RTC_EPOCH_SET:     /* Set the epoch.       */
640
-        {
641
-                /* 
642
-                 * There were no RTC clocks before 1900.
643
-                 */
644
-                if (arg < 1900)
645
-		  return -EINVAL;
646
-		if (!capable(CAP_SYS_TIME))
647
-		  return -EACCES;
648
-		
649
-                epoch = arg;
650
-                return 0;
651
-        }
652
-        default:
653
-                return -EINVAL;
654
-        }
655
-        return copy_to_user((void *)arg, &wtime, sizeof wtime) ? -EFAULT : 0;
656
-#endif
657
-}
658
-
659
-static long hp_sdc_rtc_unlocked_ioctl(struct file *file,
660
-				      unsigned int cmd, unsigned long arg)
661
-{
662
-	int ret;
663
-
664
-	mutex_lock(&hp_sdc_rtc_mutex);
665
-	ret = hp_sdc_rtc_ioctl(file, cmd, arg);
666
-	mutex_unlock(&hp_sdc_rtc_mutex);
667
-
668
-	return ret;
669
-}
670
-
671
-
672
-static const struct file_operations hp_sdc_rtc_fops = {
673
-        .owner =		THIS_MODULE,
674
-        .llseek =		no_llseek,
675
-        .read =			hp_sdc_rtc_read,
676
-        .poll =			hp_sdc_rtc_poll,
677
-        .unlocked_ioctl =	hp_sdc_rtc_unlocked_ioctl,
678
-        .open =			hp_sdc_rtc_open,
679
-        .fasync =		hp_sdc_rtc_fasync,
680
-};
681
-
682
-static struct miscdevice hp_sdc_rtc_dev = {
683
-        .minor =	RTC_MINOR,
684
-        .name =		"rtc_HIL",
685
-        .fops =		&hp_sdc_rtc_fops
686
-};
687
-
688347 static int __init hp_sdc_rtc_init(void)
689348 {
690349 	int ret;
....@@ -698,8 +357,6 @@
698357 
699358 	if ((ret = hp_sdc_request_timer_irq(&hp_sdc_rtc_isr)))
700359 		return ret;
701
-	if (misc_register(&hp_sdc_rtc_dev) != 0)
702
-		printk(KERN_INFO "Could not register misc. dev for i8042 rtc\n");
703360 
704361         proc_create_single("driver/rtc", 0, NULL, hp_sdc_rtc_proc_show);
705362 
....@@ -712,7 +369,6 @@
712369 static void __exit hp_sdc_rtc_exit(void)
713370 {
714371 	remove_proc_entry ("driver/rtc", NULL);
715
-        misc_deregister(&hp_sdc_rtc_dev);
716372 	hp_sdc_release_timer_irq(hp_sdc_rtc_isr);
717373         printk(KERN_INFO "HP i8042 SDC + MSM-58321 RTC support unloaded\n");
718374 }