diff options
| author | Rakesh Iyer <riyer@nvidia.com> | 2011-07-30 12:01:48 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-07-30 12:03:36 -0700 |
| commit | 3f27757a1182f5e3feff7425b1c3e43f3e466724 (patch) | |
| tree | 261b1a6602b833419db7cba2eee25ad93a7273f7 /drivers/input | |
| parent | 2501ec97663d84cfbc8fd8848c382f89c3bf8d1d (diff) | |
| download | linux-3f27757a1182f5e3feff7425b1c3e43f3e466724.tar.gz | |
Input: tegra-kbc - fix computation of polling time
Fix a constant definition and computation of polling time. [dtor@mail.ru: switched to using DIV_ROUND_UP as was suggested by Thierry Reding <thierry.reding@avionic-design.de>] Signed-off-by: Rakesh Iyer <riyer@nvidia.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input')
| -rw-r--r-- | drivers/input/keyboard/tegra-kbc.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/input/keyboard/tegra-kbc.c b/drivers/input/keyboard/tegra-kbc.c index da3828fc2c09..f270447ba951 100644 --- a/drivers/input/keyboard/tegra-kbc.c +++ b/drivers/input/keyboard/tegra-kbc.c @@ -19,6 +19,7 @@ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ +#include <linux/kernel.h> #include <linux/module.h> #include <linux/input.h> #include <linux/platform_device.h> @@ -37,7 +38,7 @@ #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 +648,7 @@ 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 = DIV_ROUND_UP(kbc->repoll_dly, KBC_CYCLE_MS); input_dev->name = pdev->name; input_dev->id.bustype = BUS_HOST; |