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| author | Lalith Rajendran <lalithkraj@chromium.org> | 2023-10-27 16:02:22 -0500 |
|---|---|---|
| committer | Tzung-Bi Shih <tzungbi@kernel.org> | 2023-10-28 11:13:25 +0800 |
| commit | 47ea0ddb1f5604ba3496baa19110aec6a3151f2e (patch) | |
| tree | 1c11addf0a929dbb3f1ee0aa1a5e40a1c67cec6c /drivers/platform/chrome/cros_ec_lpc.c | |
| parent | 466f70fb1b10fd139582646285e587fb38a9ff2c (diff) | |
| download | linux-stable-47ea0ddb1f5604ba3496baa19110aec6a3151f2e.tar.gz linux-stable-47ea0ddb1f5604ba3496baa19110aec6a3151f2e.tar.bz2 linux-stable-47ea0ddb1f5604ba3496baa19110aec6a3151f2e.zip | |
platform/chrome: cros_ec_lpc: Separate host command and irq disable
Both cros host command and irq disable were moved to suspend
prepare stage from late suspend recently. This is causing EC
to report MKBP event timeouts during suspend stress testing.
When the MKBP event timeouts happen during suspend, subsequent
wakeup of AP by EC using MKBP doesn't happen properly. Move the
irq disabling part back to late suspend stage which is a general
suggestion from the suspend kernel documentaiton to do irq
disable as late as possible.
Fixes: 4b9abbc132b8 ("platform/chrome: cros_ec_lpc: Move host command to prepare/complete")
Signed-off-by: Lalith Rajendran <lalithkraj@chromium.org>
Link: https://lore.kernel.org/r/20231027160221.v4.1.I1725c3ed27eb7cd9836904e49e8bfa9fb0200a97@changeid
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Diffstat (limited to 'drivers/platform/chrome/cros_ec_lpc.c')
| -rw-r--r-- | drivers/platform/chrome/cros_ec_lpc.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/drivers/platform/chrome/cros_ec_lpc.c b/drivers/platform/chrome/cros_ec_lpc.c index 897090f0f26e..f0f3d3d56157 100644 --- a/drivers/platform/chrome/cros_ec_lpc.c +++ b/drivers/platform/chrome/cros_ec_lpc.c @@ -547,22 +547,36 @@ MODULE_DEVICE_TABLE(dmi, cros_ec_lpc_dmi_table); static int cros_ec_lpc_prepare(struct device *dev) { struct cros_ec_device *ec_dev = dev_get_drvdata(dev); - - return cros_ec_suspend(ec_dev); + return cros_ec_suspend_prepare(ec_dev); } static void cros_ec_lpc_complete(struct device *dev) { struct cros_ec_device *ec_dev = dev_get_drvdata(dev); - cros_ec_resume(ec_dev); + cros_ec_resume_complete(ec_dev); +} + +static int cros_ec_lpc_suspend_late(struct device *dev) +{ + struct cros_ec_device *ec_dev = dev_get_drvdata(dev); + + return cros_ec_suspend_late(ec_dev); +} + +static int cros_ec_lpc_resume_early(struct device *dev) +{ + struct cros_ec_device *ec_dev = dev_get_drvdata(dev); + + return cros_ec_resume_early(ec_dev); } #endif static const struct dev_pm_ops cros_ec_lpc_pm_ops = { #ifdef CONFIG_PM_SLEEP .prepare = cros_ec_lpc_prepare, - .complete = cros_ec_lpc_complete + .complete = cros_ec_lpc_complete, #endif + SET_LATE_SYSTEM_SLEEP_PM_OPS(cros_ec_lpc_suspend_late, cros_ec_lpc_resume_early) }; static struct platform_driver cros_ec_lpc_driver = { |