From: Roja Rani Yarubandi rojay@codeaurora.org
commit 57648e860485de39c800a89f849fdd03c2d31d15 upstream.
Mark bus as suspended during system suspend to block the future transfers. Implement geni_i2c_resume_noirq() to resume the bus.
Fixes: 37692de5d523 ("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 --- drivers/i2c/busses/i2c-qcom-geni.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-)
--- a/drivers/i2c/busses/i2c-qcom-geni.c +++ b/drivers/i2c/busses/i2c-qcom-geni.c @@ -685,6 +685,8 @@ static int __maybe_unused geni_i2c_suspe { struct geni_i2c_dev *gi2c = dev_get_drvdata(dev);
+ i2c_mark_adapter_suspended(&gi2c->adap); + if (!gi2c->suspended) { geni_i2c_runtime_suspend(dev); pm_runtime_disable(dev); @@ -694,8 +696,16 @@ static int __maybe_unused geni_i2c_suspe 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 = { - 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, NULL) };