linux-toradex.git/drivers/spi/Kconfig, branch v4.13-rc5

Merge remote-tracking branches 'spi/topic/spidev', 'spi/topic/st-ssc4' and 'spi/topic/stm32' into spi-next

2017-07-03T15:21:12+00:00

Merge remote-tracking branches 'spi/topic/loopback', 'spi/topic/meson-spicc', 'spi/topic/mtk' and 'spi/topic/omap2-mcspi' into spi-next

2017-07-03T15:21:08+00:00

Merge remote-tracking branch 'spi/topic/master' into spi-next

2017-07-03T15:21:05+00:00

spi: add driver for STM32 SPI controller

2017-06-21T15:15:54+00:00

The STM32 Serial Peripheral Interface (SPI) can be used to communicate
with external devices while using the specific synchronous protocol. It
supports a half-duplex, full-duplex and simplex synchronous, serial
communication with external devices with 4-bit to 16/32-bit per word. It
has two 8x/16x 8-bit embedded Rx and TxFIFOs with DMA capability. It can
operate in master or slave mode.

Signed-off-by: Amelie Delaunay 
Signed-off-by: Mark Brown

spi: slave: Add SPI slave handler controlling system state

2017-05-26T12:12:19+00:00

Add an example SPI slave handler to allow remote control of system
reboot, power off, halt, and suspend.

Signed-off-by: Geert Uytterhoeven 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Mark Brown

spi: slave: Add SPI slave handler reporting uptime at previous message

2017-05-26T12:12:04+00:00

Add an example SPI slave handler responding with the uptime at the time
of reception of the last SPI message.

This can be used by an external microcontroller as a dead man's switch.

Signed-off-by: Geert Uytterhoeven 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Mark Brown

spi: core: Add support for registering SPI slave controllers

2017-05-26T12:11:00+00:00

Add support for registering SPI slave controllers using the existing SPI
master framework:
  - SPI slave controllers must use spi_alloc_slave() instead of
    spi_alloc_master(), and should provide an additional callback
    "slave_abort" to abort an ongoing SPI transfer request,
  - SPI slave controllers are added to a new "spi_slave" device class,
  - SPI slave handlers can be bound to the SPI slave device represented
    by an SPI slave controller using a DT child node named "slave",
  - Alternatively, (un)binding an SPI slave handler to the SPI slave
    device represented by an SPI slave controller can be done by
    (un)registering the slave device through a sysfs virtual file named
    "slave".

From the point of view of an SPI slave protocol handler, an SPI slave
controller looks almost like an ordinary SPI master controller. The only
exception is that a transfer request will block on the remote SPI
master, and may be cancelled using spi_slave_abort().

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Mark Brown

spi: Add Meson SPICC driver

2017-05-24T17:19:25+00:00

The SPICC hardware block on the Amlogic SoCs is Communication oriented and
can do Full-Duplex 8- to 32-bit width SPI transfers up to 30MHz.

The current driver only supportd the PIO transfer mode since the DMA seems
broken on available hardware.

Signed-off-by: Neil Armstrong 
Signed-off-by: Mark Brown

spi: SPI_TI_QSPI should depend on HAS_DMA

2017-05-14T09:49:55+00:00

If NO_DMA=y:

    ERROR: "bad_dma_ops" [drivers/spi/spi-ti-qspi.ko] undefined!

Add a dependency on HAS_DMA to fix this.

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Mark Brown

Merge remote-tracking branches 'spi/topic/ti-qspi' and 'spi/topic/xlp' into spi-next

2017-04-26T14:58:22+00:00