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spi: convert drivers to use bits_per_word_mask

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Fill in the recently added spi_master.bits_per_word_mask field in as
many drivers as possible. Make related cleanups, such as removing any
redundant error-checking, or empty setup callbacks.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Stephen Warren
2013-05-21 20:36:35 -06:00
committed by Mark Brown
parent 2922a8de99
commit 24778be20f
28 changed files with 46 additions and 280 deletions
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12
drivers/spi/spi-au1550.c
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@@ -248,11 +248,6 @@ static int au1550_spi_setupxfer(struct spi_device *spi, struct spi_transfer *t)
hz = t->speed_hz;
}
if (bpw < 4 || bpw > 24) {
dev_err(&spi->dev, "setupxfer: invalid bits_per_word=%d\n",
bpw);
return -EINVAL;
}
if (hz > spi->max_speed_hz || hz > hw->freq_max || hz < hw->freq_min) {
dev_err(&spi->dev, "setupxfer: clock rate=%d out of range\n",
hz);
@@ -296,12 +291,6 @@ static int au1550_spi_setup(struct spi_device *spi)
{
struct au1550_spi *hw = spi_master_get_devdata(spi->master);
if (spi->bits_per_word < 4 || spi->bits_per_word > 24) {
dev_err(&spi->dev, "setup: invalid bits_per_word=%d\n",
spi->bits_per_word);
return -EINVAL;
}
if (spi->max_speed_hz == 0)
spi->max_speed_hz = hw->freq_max;
if (spi->max_speed_hz > hw->freq_max
@@ -782,6 +771,7 @@ static int au1550_spi_probe(struct platform_device *pdev)
/* the spi->mode bits understood by this driver: */
master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LSB_FIRST;
master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 24);
hw = spi_master_get_devdata(master);