From 4aa323bd839604dd83aec56ed3a88df352c3339d Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Thu, 7 Feb 2008 00:13:22 -0800 Subject: DS1WM: decouple host IRQ and INTR active state settings The DS1WM driver incorrectly infers the IAS bit (1-wire interrupt active high) from IRQ settings. There are devices that have IAS=0 but still need the IRQ to trigger on a rising edge. With this patch, machines with DS1WM that need IAS=1 have to set .active_high=1 in the ds1wm_platform_data. Signed-off-by: Philipp Zabel Acked-by: Evgeniy Polyakov Acked-by: Matt Reimer Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/w1/masters/ds1wm.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'drivers/w1/masters') diff --git a/drivers/w1/masters/ds1wm.c b/drivers/w1/masters/ds1wm.c index 5747997..688e435 100644 --- a/drivers/w1/masters/ds1wm.c +++ b/drivers/w1/masters/ds1wm.c @@ -361,11 +361,12 @@ static int ds1wm_probe(struct platform_device *pdev) goto err1; } ds1wm_data->irq = res->start; - ds1wm_data->active_high = (res->flags & IORESOURCE_IRQ_HIGHEDGE) ? - 1 : 0; + ds1wm_data->active_high = plat->active_high; - set_irq_type(ds1wm_data->irq, ds1wm_data->active_high ? - IRQ_TYPE_EDGE_RISING : IRQ_TYPE_EDGE_FALLING); + if (res->flags & IORESOURCE_IRQ_HIGHEDGE) + set_irq_type(ds1wm_data->irq, IRQ_TYPE_EDGE_RISING); + if (res->flags & IORESOURCE_IRQ_LOWEDGE) + set_irq_type(ds1wm_data->irq, IRQ_TYPE_EDGE_FALLING); ret = request_irq(ds1wm_data->irq, ds1wm_isr, IRQF_DISABLED, "ds1wm", ds1wm_data); -- cgit v1.1