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-platform.c | |
| parent | 47becc556d4e8dc5bcd370100edebd6ad749b702 (diff) | |
| download | linux-1f77b363bef417e28d8556a11c9a82f3e6cf24f0.tar.bz2 | |
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-platform.c')
| -rw-r--r-- | drivers/staging/greybus/arche-platform.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/staging/greybus/arche-platform.c b/drivers/staging/greybus/arche-platform.c index 31c952454cff..af784204973f 100644 --- a/drivers/staging/greybus/arche-platform.c +++ b/drivers/staging/greybus/arche-platform.c @@ -770,6 +770,15 @@ static int arche_platform_resume(struct device *dev) return 0; } +static void arche_platform_shutdown(struct platform_device *pdev) +{ + struct arche_platform_drvdata *arche_pdata = platform_get_drvdata(pdev); + + arche_platform_poweroff_seq(arche_pdata); + + usb3613_hub_mode_ctrl(false); +} + static SIMPLE_DEV_PM_OPS(arche_platform_pm_ops, arche_platform_suspend, arche_platform_resume); @@ -789,6 +798,7 @@ MODULE_DEVICE_TABLE(of, arche_combined_id); static struct platform_driver arche_platform_device_driver = { .probe = arche_platform_probe, .remove = arche_platform_remove, + .shutdown = arche_platform_shutdown, .driver = { .name = "arche-platform-ctrl", .pm = &arche_platform_pm_ops, |