Commit 3ef3e5cd authored by Wolfram Sang's avatar Wolfram Sang Committed by Wolfram Sang

i2c: rcar: use core to detect 'no zero length' quirk

And don't reimplement in the driver.
Signed-off-by: default avatarWolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: default avatarNiklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent 5314355a
...@@ -796,14 +796,8 @@ static int rcar_i2c_master_xfer(struct i2c_adapter *adap, ...@@ -796,14 +796,8 @@ static int rcar_i2c_master_xfer(struct i2c_adapter *adap,
if (ret < 0) if (ret < 0)
goto out; goto out;
for (i = 0; i < num; i++) { for (i = 0; i < num; i++)
/* This HW can't send STOP after address phase */
if (msgs[i].len == 0) {
ret = -EOPNOTSUPP;
goto out;
}
rcar_i2c_request_dma(priv, msgs + i); rcar_i2c_request_dma(priv, msgs + i);
}
/* init first message */ /* init first message */
priv->msg = msgs; priv->msg = msgs;
...@@ -890,6 +884,10 @@ static const struct i2c_algorithm rcar_i2c_algo = { ...@@ -890,6 +884,10 @@ static const struct i2c_algorithm rcar_i2c_algo = {
.unreg_slave = rcar_unreg_slave, .unreg_slave = rcar_unreg_slave,
}; };
static const struct i2c_adapter_quirks rcar_i2c_quirks = {
.flags = I2C_AQ_NO_ZERO_LEN,
};
static const struct of_device_id rcar_i2c_dt_ids[] = { static const struct of_device_id rcar_i2c_dt_ids[] = {
{ .compatible = "renesas,i2c-r8a7778", .data = (void *)I2C_RCAR_GEN1 }, { .compatible = "renesas,i2c-r8a7778", .data = (void *)I2C_RCAR_GEN1 },
{ .compatible = "renesas,i2c-r8a7779", .data = (void *)I2C_RCAR_GEN1 }, { .compatible = "renesas,i2c-r8a7779", .data = (void *)I2C_RCAR_GEN1 },
...@@ -943,6 +941,7 @@ static int rcar_i2c_probe(struct platform_device *pdev) ...@@ -943,6 +941,7 @@ static int rcar_i2c_probe(struct platform_device *pdev)
adap->dev.parent = dev; adap->dev.parent = dev;
adap->dev.of_node = dev->of_node; adap->dev.of_node = dev->of_node;
adap->bus_recovery_info = &rcar_i2c_bri; adap->bus_recovery_info = &rcar_i2c_bri;
adap->quirks = &rcar_i2c_quirks;
i2c_set_adapdata(adap, priv); i2c_set_adapdata(adap, priv);
strlcpy(adap->name, pdev->name, sizeof(adap->name)); strlcpy(adap->name, pdev->name, sizeof(adap->name));
......
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