diff options
| author | Ludovic Desroches <ludovic.desroches@atmel.com> | 2012-08-14 11:19:22 +0200 |
|---|---|---|
| committer | Nicolas Ferre <nicolas.ferre@atmel.com> | 2012-08-23 14:55:45 +0200 |
| commit | e402af6caa02f12ad213af2e22aa8a32970f99b0 (patch) | |
| tree | 1ee6b4dc1f0e594d007f53105921880edcf793c6 /drivers/rtc/rtc-at91sam9.c | |
| parent | 85ebea12f59e3341049a9c17edcb73fcf21043db (diff) | |
| download | olio-linux-3.10-e402af6caa02f12ad213af2e22aa8a32970f99b0.tar.xz olio-linux-3.10-e402af6caa02f12ad213af2e22aa8a32970f99b0.zip | |
ARM: at91: fix rtc-at91sam9 irq issue due to sparse irq support
AT91_ID_SYS as virq is incorrect because of spare irq support which
introduces NR_IRQS_LEGACY offset. It modifies rtc-at91sam9 driver in
order to get irq from resources.
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Diffstat (limited to 'drivers/rtc/rtc-at91sam9.c')
| -rw-r--r-- | drivers/rtc/rtc-at91sam9.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c index 831868904e0..1dd61f402b0 100644 --- a/drivers/rtc/rtc-at91sam9.c +++ b/drivers/rtc/rtc-at91sam9.c @@ -58,6 +58,7 @@ struct sam9_rtc { struct rtc_device *rtcdev; u32 imr; void __iomem *gpbr; + int irq; }; #define rtt_readl(rtc, field) \ @@ -292,7 +293,7 @@ static int __devinit at91_rtc_probe(struct platform_device *pdev) { struct resource *r, *r_gpbr; struct sam9_rtc *rtc; - int ret; + int ret, irq; u32 mr; r = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -302,10 +303,18 @@ static int __devinit at91_rtc_probe(struct platform_device *pdev) return -ENODEV; } + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(&pdev->dev, "failed to get interrupt resource\n"); + return irq; + } + rtc = kzalloc(sizeof *rtc, GFP_KERNEL); if (!rtc) return -ENOMEM; + rtc->irq = irq; + /* platform setup code should have handled this; sigh */ if (!device_can_wakeup(&pdev->dev)) device_init_wakeup(&pdev->dev, 1); @@ -345,11 +354,10 @@ static int __devinit at91_rtc_probe(struct platform_device *pdev) } /* register irq handler after we know what name we'll use */ - ret = request_irq(AT91_ID_SYS, at91_rtc_interrupt, - IRQF_SHARED, + ret = request_irq(rtc->irq, at91_rtc_interrupt, IRQF_SHARED, dev_name(&rtc->rtcdev->dev), rtc); if (ret) { - dev_dbg(&pdev->dev, "can't share IRQ %d?\n", AT91_ID_SYS); + dev_dbg(&pdev->dev, "can't share IRQ %d?\n", rtc->irq); rtc_device_unregister(rtc->rtcdev); goto fail_register; } @@ -386,7 +394,7 @@ static int __devexit at91_rtc_remove(struct platform_device *pdev) /* disable all interrupts */ rtt_writel(rtc, MR, mr & ~(AT91_RTT_ALMIEN | AT91_RTT_RTTINCIEN)); - free_irq(AT91_ID_SYS, rtc); + free_irq(rtc->irq, rtc); rtc_device_unregister(rtc->rtcdev); @@ -423,7 +431,7 @@ static int at91_rtc_suspend(struct platform_device *pdev, rtc->imr = mr & (AT91_RTT_ALMIEN | AT91_RTT_RTTINCIEN); if (rtc->imr) { if (device_may_wakeup(&pdev->dev) && (mr & AT91_RTT_ALMIEN)) { - enable_irq_wake(AT91_ID_SYS); + enable_irq_wake(rtc->irq); /* don't let RTTINC cause wakeups */ if (mr & AT91_RTT_RTTINCIEN) rtt_writel(rtc, MR, mr & ~AT91_RTT_RTTINCIEN); @@ -441,7 +449,7 @@ static int at91_rtc_resume(struct platform_device *pdev) if (rtc->imr) { if (device_may_wakeup(&pdev->dev)) - disable_irq_wake(AT91_ID_SYS); + disable_irq_wake(rtc->irq); mr = rtt_readl(rtc, MR); rtt_writel(rtc, MR, mr | rtc->imr); } |