spi: omap-uwire: Convert to use bits_per_word_mask
Set bits_per_word_mask so spi core will reject transfers that attempt to use an unsupported bits_per_word value. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
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354312f16e
Коммит
790fc55a77
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@ -99,7 +99,6 @@ struct uwire_spi {
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};
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struct uwire_state {
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unsigned bits_per_word;
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unsigned div1_idx;
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};
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@ -210,9 +209,8 @@ static void uwire_chipselect(struct spi_device *spi, int value)
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static int uwire_txrx(struct spi_device *spi, struct spi_transfer *t)
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{
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struct uwire_state *ust = spi->controller_state;
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unsigned len = t->len;
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unsigned bits = ust->bits_per_word;
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unsigned bits = t->bits_per_word ? : spi->bits_per_word;
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unsigned bytes;
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u16 val, w;
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int status = 0;
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@ -322,7 +320,6 @@ static int uwire_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
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struct uwire_state *ust = spi->controller_state;
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struct uwire_spi *uwire;
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unsigned flags = 0;
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unsigned bits;
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unsigned hz;
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unsigned long rate;
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int div1_idx;
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@ -332,17 +329,6 @@ static int uwire_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
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uwire = spi_master_get_devdata(spi->master);
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bits = spi->bits_per_word;
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if (t != NULL && t->bits_per_word)
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bits = t->bits_per_word;
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if (bits > 16) {
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pr_debug("%s: wordsize %d?\n", dev_name(&spi->dev), bits);
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status = -ENODEV;
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goto done;
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}
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ust->bits_per_word = bits;
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/* mode 0..3, clock inverted separately;
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* standard nCS signaling;
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* don't treat DI=high as "not ready"
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@ -509,7 +495,7 @@ static int uwire_probe(struct platform_device *pdev)
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/* the spi->mode bits understood by this driver: */
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master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;
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master->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 16);
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master->flags = SPI_MASTER_HALF_DUPLEX;
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master->bus_num = 2; /* "official" */
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