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spi: spi-mxs: Always clear INGORE_CRC, to keep CS asserted

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INGORE_CRC, better named DEASSERT_CS, should be cleared on all tranfers
except the last.  So instead of only clearing it on the first transfer, we
can just always clear it.  It will set on the last transfer.

This removes the only use of the "first" flag in the transfer functions, so
that flag can be then be removed.

Signed-off-by: Trent Piepho <tpiepho@gmail.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Trent Piepho 2013-10-01 13:14:39 -07:00 committed by Mark Brown
parent f5bc7384dc
commit 75e73fa248
1 changed files with 2 additions and 3 deletions
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5
drivers/spi/spi-mxs.c
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@ -318,9 +318,8 @@ static int mxs_spi_txrx_pio(struct mxs_spi *spi, int cs,
{
struct mxs_ssp *ssp = &spi->ssp;
if (*first)
writel(BM_SSP_CTRL0_IGNORE_CRC,
ssp->base + HW_SSP_CTRL0 + STMP_OFFSET_REG_CLR);
writel(BM_SSP_CTRL0_IGNORE_CRC,
ssp->base + HW_SSP_CTRL0 + STMP_OFFSET_REG_CLR);
mxs_spi_set_cs(spi, cs);