Received-SPF: pass (google.com: domain of linux-kernel+bounces-67756-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.80.249 as permitted sender) client-ip=147.75.80.249;
From: Eddie James <eajames@linux.ibm.com>
To: linux-fsi@lists.ozlabs.org
Cc: linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org,
        linux-clk@vger.kernel.org, devicetree@vger.kernel.org,
        andi.shyti@kernel.org, eajames@linux.ibm.com, alistair@popple.id.au,
        joel@jms.id.au, jk@ozlabs.org, sboyd@kernel.org,
        mturquette@baylibre.com, robh@kernel.org,
        krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org
Subject: [PATCH 31/33] i2c: fsi: Define a function to check status error bits
Date: Thu, 15 Feb 2024 16:07:57 -0600
Message-Id: <20240215220759.976998-32-eajames@linux.ibm.com>
In-Reply-To: <20240215220759.976998-1-eajames@linux.ibm.com>
References: <20240215220759.976998-1-eajames@linux.ibm.com>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

This will be used more than once with interrupt support, so split
the error bit checks into a function.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
---
 drivers/i2c/busses/i2c-fsi.c | 38 ++++++++++++++++++++----------------
 1 file changed, 21 insertions(+), 17 deletions(-)

diff --git a/drivers/i2c/busses/i2c-fsi.c b/drivers/i2c/busses/i2c-fsi.c
index 096dc7e2369f..5f524fb6f0f8 100644
--- a/drivers/i2c/busses/i2c-fsi.c
+++ b/drivers/i2c/busses/i2c-fsi.c
@@ -507,6 +507,26 @@ static int fsi_i2c_abort(struct fsi_i2c_port *port, u32 status)
 	return -ETIMEDOUT;
 }
 
+static int fsi_i2c_error_status_to_rc(u32 status)
+{
+	if (status & I2C_STAT_INV_CMD)
+		return -EINVAL;
+
+	if (status & (I2C_STAT_PARITY | I2C_STAT_BE_OVERRUN | I2C_STAT_BE_ACCESS))
+		return -EPROTO;
+
+	if (status & I2C_STAT_NACK)
+		return -ENXIO;
+
+	if (status & I2C_STAT_LOST_ARB)
+		return -EAGAIN;
+
+	if (status & I2C_STAT_STOP_ERR)
+		return -EBADMSG;
+
+	return -EIO;
+}
+
 static int fsi_i2c_handle_status(struct fsi_i2c_port *port,
 				 struct i2c_msg *msg, u32 status)
 {
@@ -518,23 +538,7 @@ static int fsi_i2c_handle_status(struct fsi_i2c_port *port,
 		if (rc)
 			return rc;
 
-		if (status & I2C_STAT_INV_CMD)
-			return -EINVAL;
-
-		if (status & (I2C_STAT_PARITY | I2C_STAT_BE_OVERRUN |
-		    I2C_STAT_BE_ACCESS))
-			return -EPROTO;
-
-		if (status & I2C_STAT_NACK)
-			return -ENXIO;
-
-		if (status & I2C_STAT_LOST_ARB)
-			return -EAGAIN;
-
-		if (status & I2C_STAT_STOP_ERR)
-			return -EBADMSG;
-
-		return -EIO;
+		return fsi_i2c_error_status_to_rc(status);
 	}
 
 	if (status & I2C_STAT_DAT_REQ) {
-- 
2.39.3