Received-SPF: pass (google.com: domain of linux-kernel+bounces-24713-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.199.223 as permitted sender) client-ip=147.75.199.223;
From: Viken Dadhaniya <quic_vdadhani@quicinc.com>
To: andersson@kernel.org, konrad.dybcio@linaro.org, andi.shyti@kernel.org,
        linux-arm-msm@vger.kernel.org, linux-i2c@vger.kernel.org,
        linux-kernel@vger.kernel.org, vkoul@kernel.org
Cc: quic_msavaliy@quicinc.com, quic_vtanuku@quicinc.com,
        Viken Dadhaniya <quic_vdadhani@quicinc.com>
Subject: [PATCH 1/1] i2c: i2c-qcom-geni: Correct I2C TRE sequence
Date: Fri, 12 Jan 2024 19:23:32 +0530
Message-Id: <20240112135332.24957-1-quic_vdadhani@quicinc.com>
Precedence: bulk

For i2c read operation, we are getting gsi mode timeout due
to malformed TRE(Transfer Ring Element). currently for read opreration,
we are configuring incorrect TRE sequence(config->dma->go).

So correct TRE sequence(config->go->dma) to resolve timeout
issue for read operation.

Signed-off-by: Viken Dadhaniya <quic_vdadhani@quicinc.com>
---
 drivers/i2c/busses/i2c-qcom-geni.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/i2c/busses/i2c-qcom-geni.c b/drivers/i2c/busses/i2c-qcom-geni.c
index 0d2e7171e3a6..5904fc8bba71 100644
--- a/drivers/i2c/busses/i2c-qcom-geni.c
+++ b/drivers/i2c/busses/i2c-qcom-geni.c
@@ -613,6 +613,11 @@ static int geni_i2c_gpi_xfer(struct geni_i2c_dev *gi2c, struct i2c_msg msgs[], i
 
 		peripheral.addr = msgs[i].addr;
 
+		ret =  geni_i2c_gpi(gi2c, &msgs[i], &config,
+				    &tx_addr, &tx_buf, I2C_WRITE, gi2c->tx_c);
+		if (ret)
+			goto err;
+
 		if (msgs[i].flags & I2C_M_RD) {
 			ret =  geni_i2c_gpi(gi2c, &msgs[i], &config,
 					    &rx_addr, &rx_buf, I2C_READ, gi2c->rx_c);
@@ -620,11 +625,6 @@ static int geni_i2c_gpi_xfer(struct geni_i2c_dev *gi2c, struct i2c_msg msgs[], i
 				goto err;
 		}
 
-		ret =  geni_i2c_gpi(gi2c, &msgs[i], &config,
-				    &tx_addr, &tx_buf, I2C_WRITE, gi2c->tx_c);
-		if (ret)
-			goto err;
-
 		if (msgs[i].flags & I2C_M_RD)
 			dma_async_issue_pending(gi2c->rx_c);
 		dma_async_issue_pending(gi2c->tx_c);
-- 
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member 
of Code Aurora Forum, hosted by The Linux Foundation