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i2c: mpc: Make use of i2c_recover_bus()

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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@alliedtelesis.co.nz>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
This commit is contained in:
Chris Packham 2021-03-29 14:52:03 +13:00 committed by Wolfram Sang
parent 81acb4015a
commit 65171b2df1
1 changed files with 16 additions and 2 deletions
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18
drivers/i2c/busses/i2c-mpc.c
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@ -586,7 +586,7 @@ 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;
}
@ -622,7 +622,7 @@ 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;
}
@ -637,6 +637,15 @@ 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,
@ -648,6 +657,10 @@ 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)
{
@ -740,6 +753,7 @@ 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)