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rtc: ds1685: use devm_platform_ioremap_resource helper

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Simplify ioremapping of registers by using devm_platform_ioremap_resource.

Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Acked-by: Joshua Kinard <kumba@gentoo.org>
Link: https://lore.kernel.org/r/20191011150546.9186-2-tbogendoerfer@suse.de
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Thomas Bogendoerfer 2019-10-11 17:05:44 +02:00 committed by Alexandre Belloni
parent 9e420d7f12
commit af818031f4
2 changed files with 3 additions and 21 deletions
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23
drivers/rtc/rtc-ds1685.c
View File

@ -1040,7 +1040,6 @@ static int
ds1685_rtc_probe(struct platform_device *pdev)
{
struct rtc_device *rtc_dev;
struct resource *res;
struct ds1685_priv *rtc;
struct ds1685_rtc_platform_data *pdata;
u8 ctrla, ctrlb, hours;
@ -1070,25 +1069,9 @@ ds1685_rtc_probe(struct platform_device *pdev)
* that sits behind the IOC3 PCI metadevice.
*/
if (pdata->alloc_io_resources) {
/* Get the platform resources. */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res)
return -ENXIO;
rtc->size = resource_size(res);
/* Request a memory region. */
/* XXX: mmio-only for now. */
if (!devm_request_mem_region(&pdev->dev, res->start, rtc->size,
pdev->name))
return -EBUSY;
/*
* Set the base address for the rtc, and ioremap its
* registers.
*/
rtc->regs = devm_ioremap(&pdev->dev, res->start, rtc->size);
if (!rtc->regs)
return -ENOMEM;
rtc->regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(rtc->regs))
return PTR_ERR(rtc->regs);
}
/* Get the register step size. */

1
include/linux/rtc/ds1685.h
View File

@ -43,7 +43,6 @@ struct ds1685_priv {
struct rtc_device *dev;
void __iomem *regs;
u32 regstep;
size_t size;
int irq_num;
bool bcd_mode;
bool no_irq;