1 # SPDX-License-Identifier: GPL-2.0-only
3 # CAIF physical drivers
6 menuconfig CAIF_DRIVERS
7 bool "CAIF transport drivers"
10 Enable this to see CAIF physical drivers.
15 tristate "CAIF TTY transport driver"
16 depends on CAIF && TTY
19 The CAIF TTY transport driver is a Line Discipline (ldisc)
20 identified as N_CAIF. When this ldisc is opened from user space
21 it will redirect the TTY's traffic into the CAIF stack.
24 tristate "CAIF SPI transport driver for slave interface"
25 depends on CAIF && HAS_DMA
28 The CAIF Link layer SPI Protocol driver for Slave SPI interface.
29 This driver implements a platform driver to accommodate for a
30 platform specific SPI device. A sample CAIF SPI Platform device is
31 provided in <file:Documentation/networking/caif/spi_porting.txt>.
34 bool "Next command and length in start of frame"
35 depends on CAIF_SPI_SLAVE
38 Putting the next command and length in the start of the frame can
39 help to synchronize to the next transfer in case of over or under-runs.
40 This option also needs to be enabled on the modem.
43 tristate "CAIF HSI transport driver"
47 The CAIF low level driver for CAIF over HSI.
48 Be aware that if you enable this then you also need to
49 enable a low-level HSI driver.
52 tristate "CAIF virtio transport driver"
53 depends on CAIF && HAS_DMA
56 select GENERIC_ALLOCATOR
59 The CAIF driver for CAIF over Virtio.