diff options
| author | Vaibhav Hiremath <vaibhav.hiremath@linaro.org> | 2016-05-24 18:32:03 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@google.com> | 2016-05-25 22:36:45 -0700 |
| commit | 0b1283e33f7a38645c9d060ce2e2b24a44e3b125 (patch) | |
| tree | 15f1a7d7c41272e6bc23b20c2d8cef9ea720b032 /drivers/staging/greybus/arche-platform.c | |
| parent | c61a8b49846ecc11f7959f573b9548f859bc73a5 (diff) | |
greybus: arche-platform: Enter ACTIVE state only from OFF state
Make sure that, transition to active state happens only from OFF state.
Instead of imposing the restriction to user-space, driver internally
switches to OFF state and then to ACTIVE state.
Testing Done: Tested on EVT1.5 platform.
Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
Tested-by: Michael Scott <michael.scott@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Diffstat (limited to 'drivers/staging/greybus/arche-platform.c')
| -rw-r--r-- | drivers/staging/greybus/arche-platform.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/staging/greybus/arche-platform.c b/drivers/staging/greybus/arche-platform.c index a8e36e1141fd..58b370774399 100644 --- a/drivers/staging/greybus/arche-platform.c +++ b/drivers/staging/greybus/arche-platform.c @@ -407,8 +407,15 @@ static ssize_t state_store(struct device *dev, if (arche_pdata->state == ARCHE_PLATFORM_STATE_ACTIVE) goto exit; + /* First we want to make sure we power off everything + * and then activate back again */ + device_for_each_child(arche_pdata->dev, NULL, apb_poweroff); + arche_platform_poweroff_seq(arche_pdata); + arche_platform_wd_irq_en(arche_pdata); ret = arche_platform_coldboot_seq(arche_pdata); + if (ret) + goto exit; } else if (sysfs_streq(buf, "standby")) { if (arche_pdata->state == ARCHE_PLATFORM_STATE_STANDBY) |