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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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13
drivers/spi/spi-omap2-mcspi.c
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@@ -857,12 +857,6 @@ static int omap2_mcspi_setup(struct spi_device *spi)
struct omap2_mcspi_dma *mcspi_dma;
struct omap2_mcspi_cs *cs = spi->controller_state;
if (spi->bits_per_word < 4 || spi->bits_per_word > 32) {
dev_dbg(&spi->dev, "setup: unsupported %d bit words\n",
spi->bits_per_word);
return -EINVAL;
}
mcspi_dma = &mcspi->dma_channels[spi->chip_select];
if (!cs) {
@@ -1072,10 +1066,7 @@ static int omap2_mcspi_transfer_one_message(struct spi_master *master,
unsigned len = t->len;
if (t->speed_hz > OMAP2_MCSPI_MAX_FREQ
|| (len && !(rx_buf || tx_buf))
|| (t->bits_per_word &&
( t->bits_per_word < 4
|| t->bits_per_word > 32))) {
|| (len && !(rx_buf || tx_buf))) {
dev_dbg(mcspi->dev, "transfer: %d Hz, %d %s%s, %d bpw\n",
t->speed_hz,
len,
@@ -1196,7 +1187,7 @@ static int omap2_mcspi_probe(struct platform_device *pdev)
/* the spi->mode bits understood by this driver: */
master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;
master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32);
master->setup = omap2_mcspi_setup;
master->prepare_transfer_hardware = omap2_prepare_transfer;
master->unprepare_transfer_hardware = omap2_unprepare_transfer;