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authorAlexandru Ardelean <alexandru.ardelean@analog.com>2019-09-26 13:51:44 +0300
committerMark Brown <broonie@kernel.org>2019-10-15 13:46:34 +0300
commit3984d39b0e41ac4de8b4530ae3911ccf52ed4bbf (patch)
tree1352f93af0b1b53d905a415b2fa1449903358f97 /drivers/spi/spi-fsl-espi.c
parent25093bdeb6bcae728e12e3795261dbd3677060a9 (diff)
downloadlinux-3984d39b0e41ac4de8b4530ae3911ccf52ed4bbf.tar.xz
spi: spi-fsl-espi: convert transfer delay to `spi_delay` format
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>
Diffstat (limited to 'drivers/spi/spi-fsl-espi.c')
-rw-r--r--drivers/spi/spi-fsl-espi.c16
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/spi/spi-fsl-espi.c b/drivers/spi/spi-fsl-espi.c
index f20326714b9d..f72daf66f3f3 100644
--- a/drivers/spi/spi-fsl-espi.c
+++ b/drivers/spi/spi-fsl-espi.c
@@ -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)