Commit graph

7 commits

Author SHA1 Message Date
Simon Glass
d3504fee73 spi: Use spi_alloc_slave() in each SPI driver
Rather than each driver having its own way to allocate a SPI slave,
use the new allocation function everywhere. This will make it easier
to extend the interface without breaking drivers.

Signed-off-by: Simon Glass <sjg@chromium.org>
2013-03-19 08:45:36 -07:00
ajoy
cc1182beea OMAP3 SPI : Fixed bugs related to SPI transfer
Added posted writes (read after writes) to effect the
change immediately for channel confiuration and channel
enable register

Disable the channel to purge receieve data in TX_ONLY
mode transfer otherwise rx data will get affected by
the next immediate RX_ONLY mode transfer

Wait for the EOT bit to be set after last byte has been
loaded to TX shift register in the the TX_ONLY mode.This
ensures TX data has been completely shifted out

Disable the channel in RX_ONLY mode before reading the
last data from  RXX register to prevent the SPI slave
to transmit next word

Signed-off-by: Ajoy Kumar Das <akdas75@yahoo.in>
Cc: Tom Rini <trini@ti.com>
Cc: jacopo mondi <j.mondi@voltaelectronics.com>
2012-12-10 08:55:25 -07:00
Peter Korsgaard
22cbeed454 omap3_spi: introduce CONFIG_OMAP3_SPI_D0_D1_SWAPPED
D0/D1 Swapped or not is a board property, not anything specific to
the am33xx SoC, so add a custom define for it.

At the same time correct the bit handling for the swapped mode
(DPE0 should be cleared and SI/DPE1 set).

Signed-off-by: Peter Korsgaard <peter.korsgaard@barco.com>
2012-10-25 11:30:50 -07:00
Tom Rini
a4a99fffd8 am335x evm: Enable support for spi0
Signed-off-by: Tom Rini <trini@ti.com>
2012-09-01 14:58:19 +02:00
Tom Rini
4c0620bf42 am33xx: Add support, update omap3 McSPI driver
Signed-off-by: Tom Rini <trini@ti.com>
2012-09-01 14:58:18 +02:00
jacopo mondi
08b5ab073d omap3_spi: receive transmit mode
Implementation of receive-transmit mode for
omap3 MCSPI.

Introduces full duplex communication, needed by
some spi devices (such as enc28j60).

Signed-off-by: jacopo mondi <mondi@cs.unibo.it> <j.mondi@voltaelectronics.com>
2012-03-27 22:05:29 +02:00
Dirk Behme
53736baaff OMAP3: SPI driver
CC: Ruslan N. Araslanov <byaaka@yandex.ru>
Signed-off-by: Ruslan Araslanov <ruslan.araslanov@vitecmm.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2010-12-11 11:01:00 -05:00