From: Chris Packham <chris.packham@xxxxxxxxxxxxxxxxxxx>
[ Upstream commit 65171b2df15eb7545431d75c2729b5062da89b43 ]
Move the existing calls of mpc_i2c_fixup() to a recovery function
registered via bus_recovery_info. This makes it more obvious that
recovery is supported and allows for a future where recovery is
triggered by the i2c core.
Signed-off-by: Chris Packham <chris.packham@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Wolfram Sang <wsa@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/i2c/busses/i2c-mpc.c | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 deletions(-)
diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c
index 48ecffecc0ed..f2e8b9a159a7 100644
--- a/drivers/i2c/busses/i2c-mpc.c
+++ b/drivers/i2c/busses/i2c-mpc.c
@@ -581,7 +581,7 @@ static int mpc_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
if ((status & (CSR_MCF | CSR_MBB | CSR_RXAK)) != 0) {
writeb(status & ~CSR_MAL,
i2c->base + MPC_I2C_SR);
- mpc_i2c_fixup(i2c);
+ i2c_recover_bus(&i2c->adap);
}
return -EIO;
}
@@ -617,7 +617,7 @@ static int mpc_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
if ((status & (CSR_MCF | CSR_MBB | CSR_RXAK)) != 0) {
writeb(status & ~CSR_MAL,
i2c->base + MPC_I2C_SR);
- mpc_i2c_fixup(i2c);
+ i2c_recover_bus(&i2c->adap);
}
return -EIO;
}
@@ -632,6 +632,15 @@ static u32 mpc_functionality(struct i2c_adapter *adap)
| I2C_FUNC_SMBUS_READ_BLOCK_DATA | I2C_FUNC_SMBUS_BLOCK_PROC_CALL;
}
+static int fsl_i2c_bus_recovery(struct i2c_adapter *adap)
+{
+ struct mpc_i2c *i2c = i2c_get_adapdata(adap);
+
+ mpc_i2c_fixup(i2c);
+
+ return 0;
+}
+
static const struct i2c_algorithm mpc_algo = {
.master_xfer = mpc_xfer,
.functionality = mpc_functionality,
@@ -643,6 +652,10 @@ static struct i2c_adapter mpc_ops = {
.timeout = HZ,
};
+static struct i2c_bus_recovery_info fsl_i2c_recovery_info = {
+ .recover_bus = fsl_i2c_bus_recovery,
+};
+
static const struct of_device_id mpc_i2c_of_match[];
static int fsl_i2c_probe(struct platform_device *op)
{
@@ -735,6 +748,7 @@ static int fsl_i2c_probe(struct platform_device *op)
i2c_set_adapdata(&i2c->adap, i2c);
i2c->adap.dev.parent = &op->dev;
i2c->adap.dev.of_node = of_node_get(op->dev.of_node);
+ i2c->adap.bus_recovery_info = &fsl_i2c_recovery_info;
result = i2c_add_adapter(&i2c->adap);
if (result < 0) {
--
2.30.2
