diff options
| author |   Wolfram Sang <wsa+renesas@sang-engineering.com> | 2018-07-23 22:26:14 +0200 |
|---|---|---|
| committer |   Wolfram Sang <wsa@the-dreams.de> | 2018-08-04 23:25:07 +0200 |
| commit | 3ef3e5cd72aa3b8e31e06825f9ff90f3d1b6a378 (patch) | |
| tree | ed9e571abb8a4552986fb4d882b90e4d90b8d3c5 /drivers/i2c | |
| parent | i2c: stu300: use core to detect 'no zero length' quirk (diff) | |
| download | linux-dev-3ef3e5cd72aa3b8e31e06825f9ff90f3d1b6a378.tar.xz linux-dev-3ef3e5cd72aa3b8e31e06825f9ff90f3d1b6a378.zip | |
i2c: rcar: use core to detect 'no zero length' quirk
And don't reimplement in the driver.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-rcar.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c index 2688520110d1..791a4aa34fdd 100644 --- a/drivers/i2c/busses/i2c-rcar.c +++ b/drivers/i2c/busses/i2c-rcar.c @@ -796,14 +796,8 @@ static int rcar_i2c_master_xfer(struct i2c_adapter *adap, if (ret < 0) goto out; - for (i = 0; i < num; i++) { - /* This HW can't send STOP after address phase */ - if (msgs[i].len == 0) { - ret = -EOPNOTSUPP; - goto out; - } + for (i = 0; i < num; i++) rcar_i2c_request_dma(priv, msgs + i); - } /* init first message */ priv->msg = msgs; @@ -890,6 +884,10 @@ static const struct i2c_algorithm rcar_i2c_algo = { .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[] = { { .compatible = "renesas,i2c-r8a7778", .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) adap->dev.parent = dev; adap->dev.of_node = dev->of_node; adap->bus_recovery_info = &rcar_i2c_bri; + adap->quirks = &rcar_i2c_quirks; i2c_set_adapdata(adap, priv); strlcpy(adap->name, pdev->name, sizeof(adap->name)); |