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spi/bitbang: initialize bits_per_word as specified by spi message
SPI protocol drivers can submit messages specifying needed bits_per_word parameter for a message transfer. The bitbang driver currently ignores bits_per_word given by a singe message and always uses master's bits_per_word parameter. Only use master's bits_per_word when a message didn't specify needed bits_per_word for ongoing transfer. Signed-off-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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8b20c8cb89
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1 changed files with 3 additions and 3 deletions
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@ -68,7 +68,7 @@ static unsigned bitbang_txrx_8(
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unsigned ns,
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struct spi_transfer *t
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) {
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unsigned bits = spi->bits_per_word;
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unsigned bits = t->bits_per_word ? : spi->bits_per_word;
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unsigned count = t->len;
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const u8 *tx = t->tx_buf;
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u8 *rx = t->rx_buf;
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@ -94,7 +94,7 @@ static unsigned bitbang_txrx_16(
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unsigned ns,
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struct spi_transfer *t
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) {
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unsigned bits = spi->bits_per_word;
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unsigned bits = t->bits_per_word ? : spi->bits_per_word;
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unsigned count = t->len;
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const u16 *tx = t->tx_buf;
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u16 *rx = t->rx_buf;
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@ -120,7 +120,7 @@ static unsigned bitbang_txrx_32(
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unsigned ns,
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struct spi_transfer *t
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) {
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unsigned bits = spi->bits_per_word;
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unsigned bits = t->bits_per_word ? : spi->bits_per_word;
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unsigned count = t->len;
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const u32 *tx = t->tx_buf;
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u32 *rx = t->rx_buf;
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