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authorKuninori Morimoto <morimoto.kuninori@renesas.com>2009-09-15 00:21:34 +0000
committerPaul Mundt <lethal@linux-sh.org>2009-09-15 09:30:14 +0900
commit1f85d381062a046fd8f3ddb654a5276266daf72c (patch)
tree2fd3f42ede6f3272e21d02c3fd72adfb000b9e1d /drivers/input
parent033eb0acddb71bbee32dce285256b3489b17ef7f (diff)
sh: add kycr2_delay for sh_keysc
After KYCR2 is set, udelay might become necessary if there are only a small number of keys attached. This patch introduces an optional delay through the platform data to address this problem. Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/input')
-rw-r--r--drivers/input/keyboard/sh_keysc.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/input/keyboard/sh_keysc.c b/drivers/input/keyboard/sh_keysc.c
index cea70e6a103..68fd502fcfe 100644
--- a/drivers/input/keyboard/sh_keysc.c
+++ b/drivers/input/keyboard/sh_keysc.c
@@ -80,6 +80,9 @@ static irqreturn_t sh_keysc_isr(int irq, void *dev_id)
iowrite16(KYCR2_IRQ_LEVEL | (keyin_set << 8),
priv->iomem_base + KYCR2_OFFS);
+ if (pdata->kycr2_delay)
+ udelay(pdata->kycr2_delay);
+
keys ^= ~0;
keys &= (1 << (sh_keysc_mode[pdata->mode].keyin *
sh_keysc_mode[pdata->mode].keyout)) - 1;