Linux-RTC Archive on lore.kernel.org
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From: Thomas Bogendoerfer <tbogendoerfer@suse.de>
To: Joshua Kinard <kumba@gentoo.org>,
	Alessandro Zummo <a.zummo@towertech.it>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	linux-rtc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2/3] rtc: ds1685: use devm_platform_ioremap_resource helper
Date: Fri, 11 Oct 2019 17:05:44 +0200
Message-ID: <20191011150546.9186-2-tbogendoerfer@suse.de> (raw)
In-Reply-To: <20191011150546.9186-1-tbogendoerfer@suse.de>

Simplify ioremapping of registers by using devm_platform_ioremap_resource.

Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/rtc/rtc-ds1685.c   | 23 +++--------------------
 include/linux/rtc/ds1685.h |  1 -
 2 files changed, 3 insertions(+), 21 deletions(-)

diff --git a/drivers/rtc/rtc-ds1685.c b/drivers/rtc/rtc-ds1685.c
index 51f568473de8..349a8d1caca1 100644
--- a/drivers/rtc/rtc-ds1685.c
+++ b/drivers/rtc/rtc-ds1685.c
@@ -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. */
diff --git a/include/linux/rtc/ds1685.h b/include/linux/rtc/ds1685.h
index b9671d00d964..101c7adc05a2 100644
--- a/include/linux/rtc/ds1685.h
+++ b/include/linux/rtc/ds1685.h
@@ -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;
-- 
2.16.4


  reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-11 15:05 [PATCH 1/3] rts: ds1685: remove not needed fields from private struct Thomas Bogendoerfer
2019-10-11 15:05 ` Thomas Bogendoerfer [this message]
2019-10-12 22:49   ` [PATCH 2/3] rtc: ds1685: use devm_platform_ioremap_resource helper Joshua Kinard
2019-10-14 15:51   ` Alexandre Belloni
2019-10-11 15:05 ` [PATCH 3/3] rtc: ds1685: add indirect access method and remove plat_read/plat_write Thomas Bogendoerfer
2019-10-12 23:22   ` Joshua Kinard
2019-10-14 21:20     ` Thomas Bogendoerfer
2019-10-12 22:41 ` [PATCH 1/3] rts: ds1685: remove not needed fields from private struct Joshua Kinard
2019-10-14 15:50 ` Alexandre Belloni

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