diff options
author | David Lin <dtwlin@google.com> | 2016-07-12 17:41:21 -0700 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@google.com> | 2016-07-16 07:58:52 +0900 |
commit | 1f77b363bef417e28d8556a11c9a82f3e6cf24f0 (patch) | |
tree | 6fc4cc15c512e32c7fa762015c2c5b11c0ac42a5 /drivers/staging/greybus/arche-apb-ctrl.c | |
parent | 47becc556d4e8dc5bcd370100edebd6ad749b702 (diff) |
greybus: hd: arche-platform: implement greybus shutdown
Implement platform driver shutdown callback to perform proper greybus
shutdown so that the userspace unipro_shutdown service that shuts down
the APB/SVC abruptly can be removed. The shutdown callback in
arche-platform will first remove SVC so that all the Interface can be
Deactivated in a sequence according to the spec before powering off the
APB:
Before:
-> Arche/APB power off
-> SoC power off
After this patch:
-> HD shutdown
-> SVC shutdown
-> Module shutdown
-> Interface shutdown
-> Bundle shutdown
-> Arche/APB power off
-> SoC power off
Testing Done:
- Observe all Interfaces are deactivated in the log during shutdown
- Measure power off current and make sure no regression
Signed-off-by: David Lin <dtwlin@google.com>
Reviewed-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Diffstat (limited to 'drivers/staging/greybus/arche-apb-ctrl.c')
-rw-r--r-- | drivers/staging/greybus/arche-apb-ctrl.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/staging/greybus/arche-apb-ctrl.c b/drivers/staging/greybus/arche-apb-ctrl.c index fce6a187ecfe..cae56fc0a6e5 100644 --- a/drivers/staging/greybus/arche-apb-ctrl.c +++ b/drivers/staging/greybus/arche-apb-ctrl.c @@ -444,6 +444,11 @@ static int arche_apb_ctrl_resume(struct device *dev) return 0; } +static void arche_apb_ctrl_shutdown(struct platform_device *pdev) +{ + apb_ctrl_poweroff(&pdev->dev); +} + static SIMPLE_DEV_PM_OPS(arche_apb_ctrl_pm_ops, arche_apb_ctrl_suspend, arche_apb_ctrl_resume); @@ -455,6 +460,7 @@ static struct of_device_id arche_apb_ctrl_of_match[] = { static struct platform_driver arche_apb_ctrl_device_driver = { .probe = arche_apb_ctrl_probe, .remove = arche_apb_ctrl_remove, + .shutdown = arche_apb_ctrl_shutdown, .driver = { .name = "arche-apb-ctrl", .pm = &arche_apb_ctrl_pm_ops, |