lkml.org 
[lkml]   [2013]   [Aug]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH 1/2] hwmon: (lm90) Add power contr ol
Date
> The device lm90 can be controlled by the vdd rail.
> Adding the power control support to power on/off the vdd rail.
> And make sure that power is enabled before accessing the device.
>
> Signed-off-by: Wei Ni <wni@nvidia.com>
> ---
> drivers/hwmon/lm90.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++
[...]
> + if (!data->lm90_reg) {
> + data->lm90_reg = regulator_get(&client->dev, "vdd");
> + if (IS_ERR_OR_NULL(data->lm90_reg)) {
> + if (PTR_ERR(data->lm90_reg) == -ENODEV)
> + dev_info(&client->dev,
> + "No regulator found for vdd. Assuming vdd is always powered.");
> + else
> + dev_warn(&client->dev,
> + "Error [%ld] in getting the regulator handle for vdd.\n",
> + PTR_ERR(data->lm90_reg));
> + data->lm90_reg = NULL;
> + mutex_unlock(&data->update_lock);
> + return -ENODEV;
> + }
> + }
> + if (is_enable) {
> + ret = regulator_enable(data->lm90_reg);
> + msleep(POWER_ON_DELAY);

Can this delay be handled directly from regulator?

[...]
---
\
 
 \ /
  Last update: 2013-08-07 10:41    [W:0.166 / U:0.144 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site