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i2c: mxs: 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> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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1 changed files with 5 additions and 3 deletions
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@ -567,9 +567,6 @@ static int mxs_i2c_xfer_msg(struct i2c_adapter *adap, struct i2c_msg *msg,
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dev_dbg(i2c->dev, "addr: 0x%04x, len: %d, flags: 0x%x, stop: %d\n",
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msg->addr, msg->len, msg->flags, stop);
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if (msg->len == 0)
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return -EINVAL;
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/*
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* The MX28 I2C IP block can only do PIO READ for transfer of to up
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* 4 bytes of length. The write transfer is not limited as it can use
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@ -683,6 +680,10 @@ static const struct i2c_algorithm mxs_i2c_algo = {
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.functionality = mxs_i2c_func,
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};
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static const struct i2c_adapter_quirks mxs_i2c_quirks = {
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.flags = I2C_AQ_NO_ZERO_LEN,
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};
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static void mxs_i2c_derive_timing(struct mxs_i2c_dev *i2c, uint32_t speed)
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{
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/* The I2C block clock runs at 24MHz */
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@ -854,6 +855,7 @@ static int mxs_i2c_probe(struct platform_device *pdev)
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strlcpy(adap->name, "MXS I2C adapter", sizeof(adap->name));
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adap->owner = THIS_MODULE;
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adap->algo = &mxs_i2c_algo;
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adap->quirks = &mxs_i2c_quirks;
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adap->dev.parent = dev;
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adap->nr = pdev->id;
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adap->dev.of_node = pdev->dev.of_node;
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