From: riyer@nvidia.com
To: dmitry.torokhov@gmail.com
Cc: rydberg@euromail.se, olof@lixom.net, amartin@nvidia.com,
linux-kernel@vger.kernel.org, linux-input@vger.kernel.org,
Rakesh Iyer <riyer@nvidia.com>
Subject: [PATCH v1] Input: tegra-kbc - fix computation of polling time
Date: Fri, 29 Jul 2011 16:16:57 -0700 [thread overview]
Message-ID: <1311981417-31865-1-git-send-email-riyer@nvidia.com> (raw)
From: Rakesh Iyer <riyer@nvidia.com>
Fix a constant definition and computation of polling time.
Signed-off-by: Rakesh Iyer <riyer@nvidia.com>
---
drivers/input/keyboard/tegra-kbc.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/input/keyboard/tegra-kbc.c b/drivers/input/keyboard/tegra-kbc.c
index da3828f..263f6fc 100644
--- a/drivers/input/keyboard/tegra-kbc.c
+++ b/drivers/input/keyboard/tegra-kbc.c
@@ -37,7 +37,7 @@
#define KBC_ROW_SCAN_DLY 5
/* KBC uses a 32KHz clock so a cycle = 1/32Khz */
-#define KBC_CYCLE_USEC 32
+#define KBC_CYCLE_MS 32
/* KBC Registers */
@@ -647,7 +647,7 @@ static int __devinit tegra_kbc_probe(struct platform_device *pdev)
debounce_cnt = min(pdata->debounce_cnt, KBC_MAX_DEBOUNCE_CNT);
scan_time_rows = (KBC_ROW_SCAN_TIME + debounce_cnt) * num_rows;
kbc->repoll_dly = KBC_ROW_SCAN_DLY + scan_time_rows + pdata->repeat_cnt;
- kbc->repoll_dly = ((kbc->repoll_dly * KBC_CYCLE_USEC) + 999) / 1000;
+ kbc->repoll_dly = (kbc->repoll_dly + KBC_CYCLE_MS - 1) / KBC_CYCLE_MS;
input_dev->name = pdev->name;
input_dev->id.bustype = BUS_HOST;
--
1.7.1
next reply other threads:[~2011-07-29 23:17 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-29 23:16 riyer [this message]
2011-07-30 10:41 ` Thierry Reding
2011-07-30 19:02 ` Dmitry Torokhov
2011-08-02 16:50 ` Rakesh Iyer
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