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spi: spi-fsl-espi: convert transfer delay to spi_delay format

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The way the max delay is computed for this controller, it looks like it is
searching for the max delay from an SPI message a using that.

No idea if this is valid. But this change should support both `delay_usecs`
and the new `delay` data which is of `spi_delay` type.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20190926105147.7839-17-alexandru.ardelean@analog.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Alexandru Ardelean
2019-09-26 13:51:44 +03:00
committed by Mark Brown
parent 25093bdeb6
commit 3984d39b0e
3 changed files with 19 additions and 7 deletions
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16
drivers/spi/spi-fsl-espi.c
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@@ -437,6 +437,7 @@ static int fsl_espi_do_one_msg(struct spi_master *master,
struct spi_message *m)
{
unsigned int delay_usecs = 0, rx_nbits = 0;
unsigned int delay_nsecs = 0, delay_nsecs1 = 0;
struct spi_transfer *t, trans = {};
int ret;
@@ -445,8 +446,16 @@ static int fsl_espi_do_one_msg(struct spi_master *master,
goto out;
list_for_each_entry(t, &m->transfers, transfer_list) {
if (t->delay_usecs > delay_usecs)
delay_usecs = t->delay_usecs;
if (t->delay_usecs) {
if (t->delay_usecs > delay_usecs) {
delay_usecs = t->delay_usecs;
delay_nsecs = delay_usecs * 1000;
}
} else {
delay_nsecs1 = spi_delay_to_ns(&t->delay, t);
if (delay_nsecs1 > delay_nsecs)
delay_nsecs = delay_nsecs1;
}
if (t->rx_nbits > rx_nbits)
rx_nbits = t->rx_nbits;
}
@@ -457,7 +466,8 @@ static int fsl_espi_do_one_msg(struct spi_master *master,
trans.len = m->frame_length;
trans.speed_hz = t->speed_hz;
trans.bits_per_word = t->bits_per_word;
trans.delay_usecs = delay_usecs;
trans.delay.value = delay_nsecs;
trans.delay.unit = SPI_DELAY_UNIT_NSECS;
trans.rx_nbits = rx_nbits;
if (trans.len)