Commit 03f2a0e4 authored by Alexandre Belloni's avatar Alexandre Belloni
Browse files

rtc: pl031: set range 



The PL031 and ST v1 RTC are 32bit seconds counters. STv2 is a BCD RTC
apparently going from 0000 to 9999, hopefully handling the leap days
properly until then.

Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20200306005809.38530-2-alexandre.belloni@bootlin.com


Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
parent 61c9fbff

drivers/rtc/rtc-pl031.c

+8 −0
Original line number Diff line number Diff line
@@ -80,6 +80,8 @@ struct pl031_vendor_data { 
	bool clockwatch;

	bool st_weekday;

	unsigned long irqflags;

	time64_t range_min;

	timeu64_t range_max;

};



struct pl031_local {
@@ -375,6 +377,8 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id) 
		return PTR_ERR(ldata->rtc);



	ldata->rtc->ops = ops;

	ldata->rtc->range_min = vendor->range_min;

	ldata->rtc->range_max = vendor->range_max;



	ret = rtc_register_device(ldata->rtc);

	if (ret)
@@ -405,6 +409,7 @@ static struct pl031_vendor_data arm_pl031 = { 
		.set_alarm = pl031_set_alarm,

		.alarm_irq_enable = pl031_alarm_irq_enable,

	},

	.range_max = U32_MAX,

};



/* The First ST derivative */
@@ -418,6 +423,7 @@ static struct pl031_vendor_data stv1_pl031 = { 
	},

	.clockwatch = true,

	.st_weekday = true,

	.range_max = U32_MAX,

};



/* And the second ST derivative */
@@ -438,6 +444,8 @@ static struct pl031_vendor_data stv2_pl031 = { 
	 * remove IRQF_COND_SUSPEND

	 */

	.irqflags = IRQF_SHARED | IRQF_COND_SUSPEND,

	.range_min = RTC_TIMESTAMP_BEGIN_0000,

	.range_max = RTC_TIMESTAMP_END_9999,

};



static const struct amba_id pl031_ids[] = {

CRA Git | Maintained and supported by SUSTech CRA and CCSE