spi: davinci: set chip-select mode in SPIDEF only once
Quit writing the same constant value determining the chip-select
mode when no transmissions are in progress in davinci_spi_chipelect().
Instead just setup the SPIDEF register once during probe.
Signed-off-by: Brian Niebuhr <bniebuhr@efjohnson.com>
Tested-By: Michael Williamson <michael.williamson@criticallink.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
diff --git a/drivers/spi/davinci_spi.c b/drivers/spi/davinci_spi.c
index 76decda..d6b6a49 100644
--- a/drivers/spi/davinci_spi.c
+++ b/drivers/spi/davinci_spi.c
@@ -245,8 +245,6 @@
* line for the controller
*/
if (value == BITBANG_CS_INACTIVE) {
- set_io_bits(davinci_spi->base + SPIDEF, CS_DEFAULT);
-
data1_reg_val |= CS_DEFAULT << SPIDAT1_CSNR_SHIFT;
iowrite32(data1_reg_val, davinci_spi->base + SPIDAT1);
@@ -1132,6 +1130,8 @@
clear_io_bits(davinci_spi->base + SPIGCR1,
SPIGCR1_CLKMOD_MASK);
+ iowrite32(CS_DEFAULT, davinci_spi->base + SPIDEF);
+
/* master mode default */
set_io_bits(davinci_spi->base + SPIGCR1, SPIGCR1_MASTER_MASK);