diff options
| author | Sachin Nikam <snikam@nvidia.com> | 2012-06-01 15:45:04 +0530 |
|---|---|---|
| committer | Varun Wadekar <vwadekar@nvidia.com> | 2012-07-12 10:12:03 +0530 |
| commit | efaffec30c7ba3a48d0e32037b9455e4d986227c (patch) | |
| tree | 058aa63697c77b549cf46df16862fbb5346f1db9 /drivers/input | |
| parent | 558446e672c02ac9a1f103ffbca41d7ea4f7f69d (diff) | |
lightsensor: cm3217: increasing polling_dealy for als
- Increasing default polling_delay from 500mS to 1000mS
to reduce unnecessary cpu hogging
- Supporting LIGHTSENSOR_IOCTL_SET_DELAY to have facility
to set delay from sensor HAL
- Less prints spew on console by changing pr_info -> pr_debug
Bug 993924
Change-Id: Iac0770553a1d426e4953aa4c8ff976b6cdc8fd81
Signed-off-by: Sachin Nikam <snikam@nvidia.com>
Reviewed-on: http://git-master/r/105898
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Diffstat (limited to 'drivers/input')
| -rw-r--r-- | drivers/input/misc/cm3217.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/input/misc/cm3217.c b/drivers/input/misc/cm3217.c index 2fb6eb7b3029..a9d93429882f 100644 --- a/drivers/input/misc/cm3217.c +++ b/drivers/input/misc/cm3217.c @@ -3,6 +3,8 @@ * Copyright (C) 2011 Capella Microsystems Inc. * Author: Frank Hsieh <pengyueh@gmail.com> * + * Copyright (c) 2012, NVIDIA Corporation. + * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and * may be copied, distributed, and modified under those terms. @@ -38,11 +40,11 @@ #include <asm/mach-types.h> #include <asm/setup.h> -#define D(x...) pr_info(x) +#define D(x...) pr_debug(x) #define I2C_RETRY_COUNT 10 -#define LS_POLLING_DELAY 500 +#define LS_POLLING_DELAY 1000 /* mSec */ static void report_do_work(struct work_struct *w); static DECLARE_DELAYED_WORK(report_work, report_do_work); @@ -464,6 +466,7 @@ static long lightsensor_ioctl(struct file *file, unsigned int cmd, { int rc, val; struct cm3217_info *lpi = lp_info; + unsigned long delay; /* D("[CM3217] %s cmd %d\n", __func__, _IOC_NR(cmd)); */ @@ -485,6 +488,17 @@ static long lightsensor_ioctl(struct file *file, unsigned int cmd, rc = put_user(val, (unsigned long __user *)arg); break; + case LIGHTSENSOR_IOCTL_SET_DELAY: + if (get_user(delay, (unsigned long __user *)arg)) { + rc = -EFAULT; + break; + } + D("[LS][CM3217] %s LIGHTSENSOR_IOCTL_SET_DELAY, delay %ld\n", + __func__, delay); + delay = delay / 1000; + lpi->polling_delay = msecs_to_jiffies(delay); + break; + default: pr_err("[LS][CM3217 error]%s: invalid cmd %d\n", __func__, _IOC_NR(cmd)); |