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| author |   Jarkko Nikula <jarkko.nikula@linux.intel.com> | 2015-09-15 16:26:17 +0300 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2015-09-16 20:54:32 +0100 |
| commit | 95a8fde23ef426aeee579bc99f35dc854e711225 (patch) | |
| tree | bef9504ac890c1bfea45ebfda3ae99b2725b339f /drivers/spi | |
| parent | Linux 4.3-rc1 (diff) | |
| download | linux-dev-95a8fde23ef426aeee579bc99f35dc854e711225.tar.xz linux-dev-95a8fde23ef426aeee579bc99f35dc854e711225.zip | |
spi: spi-bfin5xx: Calculate transfer speed unconditionally
SPI core validates the transfer speed and defaults to spi->max_speed_hz in
case the transfer speed is not set so code here won't use the
chip->baud value (which is derived from spi->max_speed_hz).
Please note driver uses chip->baud at the beginning of message transmission
by calling the bfin_spi_restore_state() but then programs per transfer
speed in bfin_spi_pump_transfers(). I'm not familiar with the HW so I don't
know would it be possible to remove chip->baud completely by either using
constant value in bfin_spi_restore_state() or by removing the baud register
write there.
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-bfin5xx.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/drivers/spi/spi-bfin5xx.c b/drivers/spi/spi-bfin5xx.c index a3d65b4f4944..1e91325bf39c 100644 --- a/drivers/spi/spi-bfin5xx.c +++ b/drivers/spi/spi-bfin5xx.c @@ -661,11 +661,7 @@ static void bfin_spi_pump_transfers(unsigned long data) message->state = RUNNING_STATE; dma_config = 0; - /* Speed setup (surely valid because already checked) */ - if (transfer->speed_hz) - bfin_write(&drv_data->regs->baud, hz_to_spi_baud(transfer->speed_hz)); - else - bfin_write(&drv_data->regs->baud, chip->baud); + bfin_write(&drv_data->regs->baud, hz_to_spi_baud(transfer->speed_hz)); bfin_write(&drv_data->regs->stat, BIT_STAT_CLR); bfin_spi_cs_active(drv_data, chip); |