From: John Watts <contact@xxxxxxxxxx> The controllers present in the D1 are extremely similar to the R40 and require the same reset quirks, but An extra quirk is needed to support receiving packets. Signed-off-by: John Watts <contact@xxxxxxxxxx> Link: https://lore.kernel.org/all/20230721221552.1973203-6-contact@xxxxxxxxxx Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx> --- drivers/net/can/Kconfig | 4 ++-- drivers/net/can/sun4i_can.c | 12 +++++++++++- 2 files changed, 13 insertions(+), 3 deletions(-) diff --git a/drivers/net/can/Kconfig b/drivers/net/can/Kconfig index 18e4a6e94ba9..649453a3c858 100644 --- a/drivers/net/can/Kconfig +++ b/drivers/net/can/Kconfig @@ -190,10 +190,10 @@ config CAN_SLCAN config CAN_SUN4I tristate "Allwinner A10 CAN controller" - depends on MACH_SUN4I || MACH_SUN7I || COMPILE_TEST + depends on MACH_SUN4I || MACH_SUN7I || RISCV || COMPILE_TEST help Say Y here if you want to use CAN controller found on Allwinner - A10/A20 SoCs. + A10/A20/D1 SoCs. To compile this driver as a module, choose M here: the module will be called sun4i_can. diff --git a/drivers/net/can/sun4i_can.c b/drivers/net/can/sun4i_can.c index 1f90fe6dbb8b..c508a328e38d 100644 --- a/drivers/net/can/sun4i_can.c +++ b/drivers/net/can/sun4i_can.c @@ -91,6 +91,8 @@ #define SUN4I_REG_BUF12_ADDR 0x0070 /* CAN Tx/Rx Buffer 12 */ #define SUN4I_REG_ACPC_ADDR 0x0040 /* CAN Acceptance Code 0 */ #define SUN4I_REG_ACPM_ADDR 0x0044 /* CAN Acceptance Mask 0 */ +#define SUN4I_REG_ACPC_ADDR_D1 0x0028 /* CAN Acceptance Code 0 on the D1 */ +#define SUN4I_REG_ACPM_ADDR_D1 0x002C /* CAN Acceptance Mask 0 on the D1 */ #define SUN4I_REG_RBUF_RBACK_START_ADDR 0x0180 /* CAN transmit buffer start */ #define SUN4I_REG_RBUF_RBACK_END_ADDR 0x01b0 /* CAN transmit buffer end */ @@ -779,6 +781,11 @@ static const struct sun4ican_quirks sun4ican_quirks_r40 = { .acp_offset = 0, }; +static const struct sun4ican_quirks sun4ican_quirks_d1 = { + .has_reset = true, + .acp_offset = (SUN4I_REG_ACPC_ADDR_D1 - SUN4I_REG_ACPC_ADDR), +}; + static const struct of_device_id sun4ican_of_match[] = { { .compatible = "allwinner,sun4i-a10-can", @@ -789,6 +796,9 @@ static const struct of_device_id sun4ican_of_match[] = { }, { .compatible = "allwinner,sun8i-r40-can", .data = &sun4ican_quirks_r40 + }, { + .compatible = "allwinner,sun20i-d1-can", + .data = &sun4ican_quirks_d1 }, { /* sentinel */ }, @@ -913,4 +923,4 @@ module_platform_driver(sun4i_can_driver); MODULE_AUTHOR("Peter Chen <xingkongcp@xxxxxxxxx>"); MODULE_AUTHOR("Gerhard Bertelsmann <info@xxxxxxxxxxxxxxxxxxxxxx>"); MODULE_LICENSE("Dual BSD/GPL"); -MODULE_DESCRIPTION("CAN driver for Allwinner SoCs (A10/A20)"); +MODULE_DESCRIPTION("CAN driver for Allwinner SoCs (A10/A20/D1)"); -- 2.40.1
