diff options
| author | Kuninori Morimoto <morimoto.kuninori@renesas.com> | 2009-09-15 00:21:34 +0000 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-09-15 09:30:14 +0900 |
| commit | 1f85d381062a046fd8f3ddb654a5276266daf72c (patch) | |
| tree | 2fd3f42ede6f3272e21d02c3fd72adfb000b9e1d /drivers/input/keyboard/sh_keysc.c | |
| parent | 033eb0acddb71bbee32dce285256b3489b17ef7f (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/keyboard/sh_keysc.c')
| -rw-r--r-- | drivers/input/keyboard/sh_keysc.c | 3 |
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; |