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| author |   Heiner Kallweit <hkallweit1@gmail.com> | 2016-09-07 22:54:00 +0200 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2016-09-12 20:03:49 +0100 |
| commit | 96361fafbbfc8a07b4c7ec09d96d742ef68bfbad (patch) | |
| tree | 618a6b7197fc4b0c44f66161fc8ca4a9387a5bfa /drivers/spi | |
| parent | spi: fsl-espi: factor out initial message checking (diff) | |
| download | linux-dev-96361fafbbfc8a07b4c7ec09d96d742ef68bfbad.tar.xz linux-dev-96361fafbbfc8a07b4c7ec09d96d742ef68bfbad.zip | |
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>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-fsl-espi.c | 24 |
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); |