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From: Roja Rani Yarubandi <rojay@codeaurora.org>
To: wsa@kernel.org
Cc: swboyd@chromium.org, dianders@chromium.org,
	saiprakash.ranjan@codeaurora.org, gregkh@linuxfoundation.org,
	mka@chromium.org, skananth@codeaurora.org,
	msavaliy@qti.qualcomm.com, skakit@codeaurora.org,
	rnayak@codeaurora.org, agross@kernel.org,
	bjorn.andersson@linaro.org, linux-arm-msm@vger.kernel.org,
	linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org,
	sumit.semwal@linaro.org, linux-media@vger.kernel.org,
	Roja Rani Yarubandi <rojay@codeaurora.org>
Subject: [PATCH V11 2/2] i2c: i2c-qcom-geni: Suspend and resume the bus during SYSTEM_SLEEP_PM ops
Date: Tue, 25 May 2021 18:40:51 +0530	[thread overview]
Message-ID: <20210525131051.31250-3-rojay@codeaurora.org> (raw)
In-Reply-To: <20210525131051.31250-1-rojay@codeaurora.org>

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>
---
Changes in V11:
 - This is newly added patch in this V11 series.

 drivers/i2c/busses/i2c-qcom-geni.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-qcom-geni.c b/drivers/i2c/busses/i2c-qcom-geni.c
index c3ae66ba6345..671f4a52275e 100644
--- a/drivers/i2c/busses/i2c-qcom-geni.c
+++ b/drivers/i2c/busses/i2c-qcom-geni.c
@@ -698,6 +698,8 @@ static int __maybe_unused geni_i2c_suspend_noirq(struct device *dev)
 {
 	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);
@@ -707,8 +709,16 @@ static int __maybe_unused geni_i2c_suspend_noirq(struct device *dev)
 	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)
 };
-- 
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member 
of Code Aurora Forum, hosted by The Linux Foundation


  parent reply	other threads:[~2021-05-25 13:12 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-25 13:10 [PATCH V11 0/2] Implement Shutdown callback for geni_i2c Roja Rani Yarubandi
2021-05-25 13:10 ` [PATCH V11 1/2] i2c: i2c-qcom-geni: Add shutdown callback for i2c Roja Rani Yarubandi
2021-05-25 21:34   ` Stephen Boyd
2021-05-28  8:11   ` Wolfram Sang
2021-05-31  5:24     ` rojay
2021-06-02  5:07     ` rojay
2021-06-04 20:33   ` Wolfram Sang
2021-05-25 13:10 ` Roja Rani Yarubandi [this message]
2021-05-25 21:36   ` [PATCH V11 2/2] i2c: i2c-qcom-geni: Suspend and resume the bus during SYSTEM_SLEEP_PM ops Stephen Boyd
2021-06-04 20:34   ` Wolfram Sang

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