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authorHeiner Kallweit2016-09-07 22:54:00 +0200
committerMark Brown2016-09-12 20:03:49 +0100
commit96361fafbbfc8a07b4c7ec09d96d742ef68bfbad (patch)
tree618a6b7197fc4b0c44f66161fc8ca4a9387a5bfa
parentd3152cf1c8cf3f75d8eb82ae399ea4b35a0df8d4 (diff)
spi: fsl-espi: centralize populating struct spi_transfer
Better structure the code by population all elements of struct spi_transfer in one place. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
-rw-r--r--drivers/spi/spi-fsl-espi.c24
1 files changed, 12 insertions, 12 deletions
diff --git a/drivers/spi/spi-fsl-espi.c b/drivers/spi/spi-fsl-espi.c
index 2bfaff64beb8..7fc9a2c66396 100644
--- a/drivers/spi/spi-fsl-espi.c
+++ b/drivers/spi/spi-fsl-espi.c
@@ -272,17 +272,8 @@ static int fsl_espi_bufs(struct spi_device *spi, struct spi_transfer *t)
static int fsl_espi_do_trans(struct spi_message *m, struct spi_transfer *trans)
{
struct spi_device *spi = m->spi;
- struct spi_transfer *t, *first;
int ret = 0;
- first = list_first_entry(&m->transfers, struct spi_transfer,
- transfer_list);
- list_for_each_entry(t, &m->transfers, transfer_list) {
- trans->speed_hz = t->speed_hz;
- trans->bits_per_word = t->bits_per_word;
- trans->delay_usecs = max(first->delay_usecs, t->delay_usecs);
- }
-
fsl_espi_setup_transfer(spi, trans);
if (trans->len)
@@ -305,8 +296,6 @@ static int fsl_espi_trans(struct spi_message *m, struct spi_transfer *trans,
tx_only = fsl_espi_copy_to_buf(m, mspi);
- trans->tx_buf = mspi->local_buf;
- trans->rx_buf = mspi->local_buf;
ret = fsl_espi_do_trans(m, trans);
/* If there is at least one RX byte then copy it to rx_buff */
@@ -319,8 +308,9 @@ static int fsl_espi_trans(struct spi_message *m, struct spi_transfer *trans,
static int fsl_espi_do_one_msg(struct spi_master *master,
struct spi_message *m)
{
+ struct mpc8xxx_spi *mspi = spi_master_get_devdata(m->spi->master);
u8 *rx_buf = NULL;
- unsigned int xfer_len = 0;
+ unsigned int delay_usecs = 0, xfer_len = 0;
struct spi_transfer *t, trans = {};
int ret;
@@ -333,9 +323,19 @@ static int fsl_espi_do_one_msg(struct spi_master *master,
rx_buf = t->rx_buf;
if ((t->tx_buf) || (t->rx_buf))
xfer_len += t->len;
+ if (t->delay_usecs > delay_usecs)
+ delay_usecs = t->delay_usecs;
}
+ t = list_first_entry(&m->transfers, struct spi_transfer,
+ transfer_list);
+
trans.len = xfer_len;
+ trans.speed_hz = t->speed_hz;
+ trans.bits_per_word = t->bits_per_word;
+ trans.delay_usecs = delay_usecs;
+ trans.tx_buf = mspi->local_buf;
+ trans.rx_buf = mspi->local_buf;
ret = fsl_espi_trans(m, &trans, rx_buf);