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i2c: qcom-geni: Suspend and resume the bus during SYSTEM_SLEEP_PM ops

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commit 57648e8604 upstream.

Mark bus as suspended during system suspend to block the future
transfers. Implement geni_i2c_resume_noirq() to resume the bus.

Fixes: 37692de5d5 ("i2c: i2c-qcom-geni: Add bus driver for the Qualcomm GENI I2C controller")
Signed-off-by: Roja Rani Yarubandi <rojay@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Roja Rani Yarubandi 2021-05-25 18:40:51 +05:30 committed by Greg Kroah-Hartman
parent f20eef4d06
commit eddf2d9f76
1 changed files with 11 additions and 1 deletions
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12
drivers/i2c/busses/i2c-qcom-geni.c
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@ -702,6 +702,8 @@ static int __maybe_unused geni_i2c_suspend_noirq(struct device *dev)
{ {
struct geni_i2c_dev *gi2c = dev_get_drvdata(dev); struct geni_i2c_dev *gi2c = dev_get_drvdata(dev);
i2c_mark_adapter_suspended(&gi2c->adap);
if (!gi2c->suspended) { if (!gi2c->suspended) {
geni_i2c_runtime_suspend(dev); geni_i2c_runtime_suspend(dev);
pm_runtime_disable(dev); pm_runtime_disable(dev);
@ -711,8 +713,16 @@ static int __maybe_unused geni_i2c_suspend_noirq(struct device *dev)
return 0; return 0;
} }
static int __maybe_unused geni_i2c_resume_noirq(struct device *dev)
{
struct geni_i2c_dev *gi2c = dev_get_drvdata(dev);
i2c_mark_adapter_resumed(&gi2c->adap);
return 0;
}
static const struct dev_pm_ops geni_i2c_pm_ops = { static const struct dev_pm_ops geni_i2c_pm_ops = {
SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(geni_i2c_suspend_noirq, NULL) SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(geni_i2c_suspend_noirq, geni_i2c_resume_noirq)
SET_RUNTIME_PM_OPS(geni_i2c_runtime_suspend, geni_i2c_runtime_resume, SET_RUNTIME_PM_OPS(geni_i2c_runtime_suspend, geni_i2c_runtime_resume,
NULL) NULL)
}; };