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i2c-pnx: Add stop conditions for end of transfer
Add a stop condition bit flag to the last byte in the transfer. This will generate an extra clock to handle the stop condition and prevent devices from staying in an ACK'd state. Signed-off-by: Kevin Wells <wellsk40@gmail.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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1 changed files with 6 additions and 0 deletions
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@ -173,6 +173,9 @@ static int i2c_pnx_master_xmit(struct i2c_pnx_algo_data *alg_data)
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/* We still have something to talk about... */
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val = *alg_data->mif.buf++;
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if (alg_data->mif.len == 1)
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val |= stop_bit;
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alg_data->mif.len--;
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iowrite32(val, I2C_REG_TX(alg_data));
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@ -246,6 +249,9 @@ static int i2c_pnx_master_rcv(struct i2c_pnx_algo_data *alg_data)
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__func__);
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if (alg_data->mif.len == 1) {
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/* Last byte, do not acknowledge next rcv. */
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val |= stop_bit;
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/*
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* Enable interrupt RFDAIE (data in Rx fifo),
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* and disable DRMIE (need data for Tx)
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