spi: spi-mpc512x-psc: let transmiter/receiver enabled when in xfer loop
There is no need to disable transmitter/receiver after each loop
iteration and re-enable it for next loop iteration. Enable the
transmitter/receiver before xfer loop starts and disable it when
the whole transfer is done.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/spi/spi-mpc512x-psc.c b/drivers/spi/spi-mpc512x-psc.c
index da60f26..dfddf33 100644
--- a/drivers/spi/spi-mpc512x-psc.c
+++ b/drivers/spi/spi-mpc512x-psc.c
@@ -149,6 +149,9 @@
in_8(&psc->mode);
out_8(&psc->mode, 0x0);
+ /* enable transmiter/receiver */
+ out_8(&psc->command, MPC52xx_PSC_TX_ENABLE | MPC52xx_PSC_RX_ENABLE);
+
while (len) {
int count;
int i;
@@ -177,10 +180,6 @@
out_be32(&fifo->txisr, MPC512x_PSC_FIFO_EMPTY);
out_be32(&fifo->tximr, MPC512x_PSC_FIFO_EMPTY);
- /* enable transmiter/receiver */
- out_8(&psc->command,
- MPC52xx_PSC_TX_ENABLE | MPC52xx_PSC_RX_ENABLE);
-
wait_for_completion(&mps->done);
mdelay(1);
@@ -205,9 +204,6 @@
while (in_be32(&fifo->rxcnt)) {
in_8(&fifo->rxdata_8);
}
-
- out_8(&psc->command,
- MPC52xx_PSC_TX_DISABLE | MPC52xx_PSC_RX_DISABLE);
}
/* disable transmiter/receiver and fifo interrupt */
out_8(&psc->command, MPC52xx_PSC_TX_DISABLE | MPC52xx_PSC_RX_DISABLE);