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| author | Jarkko Nikula <jarkko.nikula@linux.intel.com> | 2015-09-15 15:26:16 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-09-16 21:53:45 +0200 |
| commit | 57b48ab49b7a9ac5ff94402ade2ccb5d63579816 (patch) | |
| tree | 7d8ce6d632daea49c821010dfebe3bd6932edc8c /drivers/spi/spi-bfin-sport.c | |
| parent | Linux 4.3-rc1 (diff) | |
| download | linux-57b48ab49b7a9ac5ff94402ade2ccb5d63579816.tar.xz linux-57b48ab49b7a9ac5ff94402ade2ccb5d63579816.zip | |
spi: bfin-sport: 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_sport_spi_restore_state() but then programs per
transfer speed in bfin_sport_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_sport_spi_restore_state() or by
removing the tclkdiv 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/spi-bfin-sport.c')
| -rw-r--r-- | drivers/spi/spi-bfin-sport.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/drivers/spi/spi-bfin-sport.c b/drivers/spi/spi-bfin-sport.c index a78693189f45..6c967555a56a 100644 --- a/drivers/spi/spi-bfin-sport.c +++ b/drivers/spi/spi-bfin-sport.c @@ -352,10 +352,7 @@ bfin_sport_spi_pump_transfers(unsigned long data) transfer = drv_data->cur_transfer; chip = drv_data->cur_chip; - if (transfer->speed_hz) - transfer_speed = bfin_sport_hz_to_spi_baud(transfer->speed_hz); - else - transfer_speed = chip->baud; + transfer_speed = bfin_sport_hz_to_spi_baud(transfer->speed_hz); bfin_write(&drv_data->regs->tclkdiv, transfer_speed); SSYNC(); |