Only a few drivers rely on the CAN rx offload framework (as of the writing of this patch, only four: flexcan, m_can, mcp251xfd and ti_hecc). Give the option to the user to deselect this features during compilation. The drivers relying on CAN rx offload are in different sub folders. All of these drivers get tagged with "select CAN_RX_OFFLOAD" so that the option is automatically enabled whenever one of those driver is chosen. Signed-off-by: Vincent Mailhol <mailhol.vincent@xxxxxxxxxx> --- drivers/net/can/Kconfig | 16 ++++++++++++++++ drivers/net/can/dev/Makefile | 2 +- drivers/net/can/m_can/Kconfig | 1 + drivers/net/can/spi/mcp251xfd/Kconfig | 1 + 4 files changed, 19 insertions(+), 1 deletion(-) diff --git a/drivers/net/can/Kconfig b/drivers/net/can/Kconfig index 87470feae6b1..91e4af727d1f 100644 --- a/drivers/net/can/Kconfig +++ b/drivers/net/can/Kconfig @@ -102,6 +102,20 @@ config CAN_CALC_BITTIMING If unsure, say Y. +config CAN_RX_OFFLOAD + bool "CAN RX offload" + default y + help + Framework to offload the controller's RX FIFO during one + interrupt. The CAN frames of the FIFO are read and put into a skb + queue during that interrupt and transmitted afterwards in a NAPI + context. + + The additional features selected by this option will be added to the + can-dev module. + + If unsure, say Y. + config CAN_AT91 tristate "Atmel AT91 onchip CAN controller" depends on (ARCH_AT91 || COMPILE_TEST) && HAS_IOMEM @@ -113,6 +127,7 @@ config CAN_FLEXCAN tristate "Support for Freescale FLEXCAN based chips" depends on OF || COLDFIRE || COMPILE_TEST depends on HAS_IOMEM + select CAN_RX_OFFLOAD help Say Y here if you want to support for Freescale FlexCAN. @@ -162,6 +177,7 @@ config CAN_SUN4I config CAN_TI_HECC depends on ARM tristate "TI High End CAN Controller" + select CAN_RX_OFFLOAD help Driver for TI HECC (High End CAN Controller) module found on many TI devices. The device specifications are available from www.ti.com diff --git a/drivers/net/can/dev/Makefile b/drivers/net/can/dev/Makefile index 791e6b297ea3..633687d6b6c0 100644 --- a/drivers/net/can/dev/Makefile +++ b/drivers/net/can/dev/Makefile @@ -9,4 +9,4 @@ can-dev-$(CONFIG_CAN_NETLINK) += bittiming.o can-dev-$(CONFIG_CAN_NETLINK) += dev.o can-dev-$(CONFIG_CAN_NETLINK) += length.o can-dev-$(CONFIG_CAN_NETLINK) += netlink.o -can-dev-$(CONFIG_CAN_NETLINK) += rx-offload.o +can-dev-$(CONFIG_CAN_RX_OFFLOAD) += rx-offload.o diff --git a/drivers/net/can/m_can/Kconfig b/drivers/net/can/m_can/Kconfig index 45ad1b3f0cd0..fc2afab36279 100644 --- a/drivers/net/can/m_can/Kconfig +++ b/drivers/net/can/m_can/Kconfig @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0-only menuconfig CAN_M_CAN tristate "Bosch M_CAN support" + select CAN_RX_OFFLOAD help Say Y here if you want support for Bosch M_CAN controller framework. This is common support for devices that embed the Bosch M_CAN IP. diff --git a/drivers/net/can/spi/mcp251xfd/Kconfig b/drivers/net/can/spi/mcp251xfd/Kconfig index dd0fc0a54be1..877e4356010d 100644 --- a/drivers/net/can/spi/mcp251xfd/Kconfig +++ b/drivers/net/can/spi/mcp251xfd/Kconfig @@ -2,6 +2,7 @@ config CAN_MCP251XFD tristate "Microchip MCP251xFD SPI CAN controllers" + select CAN_RX_OFFLOAD select REGMAP select WANT_DEV_COREDUMP help -- 2.35.1
