diff options
| -rw-r--r-- | drivers/rtc/rtc-m48t59.c | 14 | ||||
| -rw-r--r-- | include/linux/rtc/m48t59.h | 2 |
2 files changed, 12 insertions, 4 deletions
diff --git a/drivers/rtc/rtc-m48t59.c b/drivers/rtc/rtc-m48t59.c index 50f9f10b32f0..867c8a79a6a8 100644 --- a/drivers/rtc/rtc-m48t59.c +++ b/drivers/rtc/rtc-m48t59.c @@ -411,9 +411,14 @@ static int __devinit m48t59_rtc_probe(struct platform_device *pdev) if (!m48t59) return -ENOMEM; - m48t59->ioaddr = ioremap(res->start, res->end - res->start + 1); - if (!m48t59->ioaddr) - goto out; + 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 @@ out: 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); diff --git a/include/linux/rtc/m48t59.h b/include/linux/rtc/m48t59.h index 41798505d157..6fc961459b4a 100644 --- a/include/linux/rtc/m48t59.h +++ b/include/linux/rtc/m48t59.h @@ -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; }; |