rtc: ds1685: drop RTC_DS1685_PROC_REGS

/proc is not the correct ABI to display debugging info. Remove
RTC_DS1685_PROC_REGS as the driver hasn't seen any real development since
it was included.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

drivers/rtc/Kconfig

@@ -1008,17 +1008,6 @@ config RTC_DRV_DS17885
 
 endchoice
 
-config RTC_DS1685_PROC_REGS
-	bool "Display register values in /proc"
-	depends on RTC_DRV_DS1685_FAMILY && PROC_FS
-	help
-	  Enable this to display a readout of all of the RTC registers in
-	  /proc/drivers/rtc.  Keep in mind that this can potentially lead
-	  to lost interrupts, as reading Control Register C will clear
-	  all pending IRQ flags.
-
-	  Unless you are debugging this driver, choose N.
-
 config RTC_DRV_DS1742
 	tristate "Maxim/Dallas DS1742/1743"
 	depends on HAS_IOMEM

drivers/rtc/rtc-ds1685.c

@@ -770,33 +770,6 @@ static const char *ds1685_rtc_sqw_freq[16] = {
 	"512Hz", "256Hz", "128Hz", "64Hz", "32Hz", "16Hz", "8Hz", "4Hz", "2Hz"
 };
 
-#ifdef CONFIG_RTC_DS1685_PROC_REGS
-/**
- * ds1685_rtc_print_regs - helper function to print register values.
- * @hex: hex byte to convert into binary bits.
- * @dest: destination char array.
- *
- * This is basically a hex->binary function, just with extra spacing between
- * the digits.  It only works on 1-byte values (8 bits).
- */
-static char*
-ds1685_rtc_print_regs(u8 hex, char *dest)
-{
-	u32 i, j;
-	char *tmp = dest;
-
-	for (i = 0; i < NUM_BITS; i++) {
-		*tmp++ = ((hex & 0x80) != 0 ? '1' : '0');
-		for (j = 0; j < NUM_SPACES; j++)
-			*tmp++ = ' ';
-		hex <<= 1;
-	}
-	*tmp++ = '\0';
-
-	return dest;
-}
-#endif
-
 /**
  * ds1685_rtc_proc - procfs access function.
  * @dev: pointer to device structure.
@@ -809,9 +782,6 @@ ds1685_rtc_proc(struct device *dev, struct seq_file *seq)
 	struct ds1685_priv *rtc = platform_get_drvdata(pdev);
 	u8 ctrla, ctrlb, ctrlc, ctrld, ctrl4a, ctrl4b, ssn[8];
 	char *model;
-#ifdef CONFIG_RTC_DS1685_PROC_REGS
-	char bits[NUM_REGS][(NUM_BITS * NUM_SPACES) + NUM_BITS + 1];
-#endif
 
 	/* Read all the relevant data from the control registers. */
 	ds1685_rtc_switch_to_bank1(rtc);
@@ -859,28 +829,7 @@ ds1685_rtc_proc(struct device *dev, struct seq_file *seq)
 	   "Periodic IRQ\t: %s\n"
 	   "Periodic Rate\t: %s\n"
 	   "SQW Freq\t: %s\n"
-#ifdef CONFIG_RTC_DS1685_PROC_REGS
-	   "Serial #\t: %8phC\n"
-	   "Register Status\t:\n"
-	   "   Ctrl A\t: UIP  DV2  DV1  DV0  RS3  RS2  RS1  RS0\n"
-	   "\t\t:  %s\n"
-	   "   Ctrl B\t: SET  PIE  AIE  UIE  SQWE  DM  2412 DSE\n"
-	   "\t\t:  %s\n"
-	   "   Ctrl C\t: IRQF  PF   AF   UF  ---  ---  ---  ---\n"
-	   "\t\t:  %s\n"
-	   "   Ctrl D\t: VRT  ---  ---  ---  ---  ---  ---  ---\n"
-	   "\t\t:  %s\n"
-#if !defined(CONFIG_RTC_DRV_DS1685) && !defined(CONFIG_RTC_DRV_DS1689)
-	   "   Ctrl 4A\t: VRT2 INCR BME  ---  PAB   RF   WF   KF\n"
-#else
-	   "   Ctrl 4A\t: VRT2 INCR ---  ---  PAB   RF   WF   KF\n"
-#endif
-	   "\t\t:  %s\n"
-	   "   Ctrl 4B\t: ABE  E32k  CS  RCE  PRS  RIE  WIE  KSE\n"
-	   "\t\t:  %s\n",
-#else
 	   "Serial #\t: %8phC\n",
-#endif
 	   model,
 	   ((ctrla & RTC_CTRL_A_DV1) ? "enabled" : "disabled"),
 	   ((ctrlb & RTC_CTRL_B_2412) ? "24-hour" : "12-hour"),
@@ -894,17 +843,7 @@ ds1685_rtc_proc(struct device *dev, struct seq_file *seq)
 	    ds1685_rtc_pirq_rate[(ctrla & RTC_CTRL_A_RS_MASK)] : "none"),
 	   (!((ctrl4b & RTC_CTRL_4B_E32K)) ?
 	    ds1685_rtc_sqw_freq[(ctrla & RTC_CTRL_A_RS_MASK)] : "32768Hz"),
-#ifdef CONFIG_RTC_DS1685_PROC_REGS
-	   ssn,
-	   ds1685_rtc_print_regs(ctrla, bits[0]),
-	   ds1685_rtc_print_regs(ctrlb, bits[1]),
-	   ds1685_rtc_print_regs(ctrlc, bits[2]),
-	   ds1685_rtc_print_regs(ctrld, bits[3]),
-	   ds1685_rtc_print_regs(ctrl4a, bits[4]),
-	   ds1685_rtc_print_regs(ctrl4b, bits[5]));
-#else
 	   ssn);
-#endif
 	return 0;
 }
 #else