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Commit 64151ad5 authored by Krzysztof Helt's avatar Krzysztof Helt Committed by David S. Miller
Browse files

rtc-m48t59: allow externally mapped ioaddr 



Add support for externally mapped ioaddr.  This is required on sparc32
as the ioaddr must be mapped with of_ioremap().

Signed-off-by: default avatarKrzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 94fe7424

drivers/rtc/rtc-m48t59.c

+10 −4
Original line number Diff line number Diff line
@@ -411,9 +411,14 @@ static int __devinit m48t59_rtc_probe(struct platform_device *pdev) 
	if (!m48t59)

		return -ENOMEM;



	m48t59->ioaddr = pdata->ioaddr;



	if (!m48t59->ioaddr) {

		/* ioaddr not mapped externally */

		m48t59->ioaddr = ioremap(res->start, res->end - res->start + 1);

		if (!m48t59->ioaddr)

			goto out;

	}



	/* Try to get irq number. We also can work in

	 * the mode without IRQ.
@@ -481,11 +486,12 @@ static int __devinit m48t59_rtc_probe(struct platform_device *pdev) 
static int __devexit m48t59_rtc_remove(struct platform_device *pdev)

{

	struct m48t59_private *m48t59 = platform_get_drvdata(pdev);

	struct m48t59_plat_data *pdata = pdev->dev.platform_data;



	sysfs_remove_bin_file(&pdev->dev.kobj, &m48t59_nvram_attr);

	if (!IS_ERR(m48t59->rtc))

		rtc_device_unregister(m48t59->rtc);

	if (m48t59->ioaddr)

	if (m48t59->ioaddr && !pdata->ioaddr)

		iounmap(m48t59->ioaddr);

	if (m48t59->irq != NO_IRQ)

		free_irq(m48t59->irq, &pdev->dev);

include/linux/rtc/m48t59.h

+2 −0
Original line number Diff line number Diff line
@@ -55,6 +55,8 @@ struct m48t59_plat_data { 


	int type; /* RTC model */



	/* ioaddr mapped externally */

	void __iomem *ioaddr;

	/* offset to RTC registers, automatically set according to the type */

	unsigned int offset;

};