diff options
| author | Laxman Dewangan <ldewangan@nvidia.com> | 2010-05-13 22:52:01 +0530 |
|---|---|---|
| committer | Gary King <gking@nvidia.com> | 2010-05-14 14:59:26 -0700 |
| commit | 7c5ade31d650992a7486e2db4f9458207039a6ce (patch) | |
| tree | c5ae66be8a6995b985a984dd99fac72d3470b91d | |
| parent | e24561a3dd7683174a9828c1d982ed9ba369afef (diff) | |
tegra kbc: Sw interface to set debaunce time in clock ticks.
It is require to set the debaunce time in terms of clock tick
granularity. 1 clock tick is 1/32 ms. The granulairty of 1ms is
too much to tune the key scanning performance.
Bug 684129
Change-Id: Ida7ca5c07ca1d6aa8f8aee57b243aea32baca38a
Reviewed-on: http://git-master/r/1383
Reviewed-by: Hu He <hhe@nvidia.com>
Tested-by: Hu He <hhe@nvidia.com>
Reviewed-by: Gary King <gking@nvidia.com>
| -rw-r--r-- | arch/arm/mach-tegra/include/nvodm_query_kbc.h | 6 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/odm_to_plat.c | 5 |
2 files changed, 8 insertions, 3 deletions
diff --git a/arch/arm/mach-tegra/include/nvodm_query_kbc.h b/arch/arm/mach-tegra/include/nvodm_query_kbc.h index f8078961978e..7129178aa551 100644 --- a/arch/arm/mach-tegra/include/nvodm_query_kbc.h +++ b/arch/arm/mach-tegra/include/nvodm_query_kbc.h @@ -60,7 +60,13 @@ typedef enum { NvOdmKbcParameter_NumOfRows=1, NvOdmKbcParameter_NumOfColumns, + + /* The debaunce time in terms of number of clocks. Clock frequency is + * 32 KHz */ NvOdmKbcParameter_DebounceTime, + + /* The repeat cycle in milliseconds. The next scan start after waiting + * of repeat cycle time */ NvOdmKbcParameter_RepeatCycleTime, NvOdmKbcParameter_Force32 = 0x7FFFFFFF } NvOdmKbcParameter; diff --git a/arch/arm/mach-tegra/odm_to_plat.c b/arch/arm/mach-tegra/odm_to_plat.c index 209268572276..b152ef2cf88f 100644 --- a/arch/arm/mach-tegra/odm_to_plat.c +++ b/arch/arm/mach-tegra/odm_to_plat.c @@ -71,9 +71,8 @@ struct tegra_kbc_plat *tegra_kbc_odm_to_plat(void) NvOdmKbcGetParameter(NvOdmKbcParameter_DebounceTime, 1, &temp); - /* debounce time is reported from ODM in milliseconds, - * but needs to be specified in 32KHz ticks */ - pdata->debounce_cnt = temp *32; + /* debounce time is reported from ODM in terms of clock ticks. */ + pdata->debounce_cnt = temp; /* repeat cycle is reported from ODM in milliseconds, * but needs to be specified in 32KHz ticks */ |