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drivers: can: mcan: add generic support for can_get_max_filters()

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Add generic support for can_get_max_filters() to the Bosch M_CAN
base driver and use it in all driver frontends.

Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
This commit is contained in:
Henrik Brix Andersen 2022-03-18 10:37:37 +01:00 committed by Anas Nashif
parent 3e80e75c19
commit 5fd079bd68
6 changed files with 17 additions and 23 deletions
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11
drivers/can/can_mcan.c
View file

@ -828,6 +828,17 @@ static int can_mcan_get_free_std(volatile struct can_mcan_std_filter *filters)
return -ENOSPC;
}
int can_mcan_get_max_filters(const struct device *dev, enum can_ide id_type)
{
ARG_UNUSED(dev);
if (id_type == CAN_STANDARD_IDENTIFIER) {
return NUM_STD_FILTER_DATA;
} else {
return NUM_EXT_FILTER_DATA;
}
}
/* Use masked configuration only for simplicity. If someone needs more than
* 28 standard filters, dual mode needs to be implemented.
* Dual mode gets tricky, because we can only activate both filters.

2
drivers/can/can_mcan.h
View file

@ -232,6 +232,8 @@ int can_mcan_send(const struct can_mcan_config *cfg, struct can_mcan_data *data,
k_timeout_t timeout, can_tx_callback_t callback,
void *user_data);
int can_mcan_get_max_filters(const struct device *dev, enum can_ide id_type);
int can_mcan_add_rx_filter(struct can_mcan_data *data,
struct can_mcan_msg_sram *msg_ram,
can_rx_callback_t callback, void *user_data,

1
drivers/can/can_mcux_mcan.c
View file

@ -159,6 +159,7 @@ static const struct can_driver_api mcux_mcan_driver_api = {
.get_state = mcux_mcan_get_state,
.set_state_change_callback = mcux_mcan_set_state_change_callback,
.get_core_clock = mcux_mcan_get_core_clock,
.get_max_filters = can_mcan_get_max_filters,
.get_max_bitrate = mcux_mcan_get_max_bitrate,
/*
* MCUX MCAN timing limits are specified in the "Nominal bit timing and

1
drivers/can/can_sam.c
View file

@ -172,6 +172,7 @@ static const struct can_driver_api can_api_funcs = {
.recover = can_mcan_recover,
#endif
.get_core_clock = can_sam_get_core_clock,
.get_max_filters = can_mcan_get_max_filters,
.get_max_bitrate = can_sam_get_max_bitrate,
.set_state_change_callback = can_sam_set_state_change_callback,
.timing_min = {

11
drivers/can/can_stm32fd.c
View file

@ -38,15 +38,6 @@ static int can_stm32fd_get_core_clock(const struct device *dev, uint32_t *rate)
return 0;
}
static int can_stm32fd_get_max_filters(const struct device *dev, enum can_ide id_type)
{
if (id_type == CAN_STANDARD_IDENTIFIER) {
return NUM_STD_FILTER_DATA;
} else {
return NUM_EXT_FILTER_DATA;
}
}
static void can_stm32fd_clock_enable(void)
{
LL_RCC_SetFDCANClockSource(LL_RCC_FDCAN_CLKSOURCE_PCLK1);
@ -197,7 +188,7 @@ static const struct can_driver_api can_api_funcs = {
#endif
.get_core_clock = can_stm32fd_get_core_clock,
.get_max_bitrate = can_stm32fd_get_max_bitrate,
.get_max_filters = can_stm32fd_get_max_filters,
.get_max_filters = can_mcan_get_max_filters,
.set_state_change_callback = can_stm32fd_set_state_change_callback,
.timing_min = {
.sjw = 0x7f,

14
drivers/can/can_stm32h7.c
View file

@ -49,18 +49,6 @@ static int can_stm32h7_get_core_clock(const struct device *dev, uint32_t *rate)
return 0;
}
static int can_stm32h7_get_max_filters(const struct device *dev,
enum can_ide id_type)
{
ARG_UNUSED(dev);
if (id_type == CAN_STANDARD_IDENTIFIER) {
return NUM_STD_FILTER_DATA;
} else {
return NUM_EXT_FILTER_DATA;
}
}
static int can_stm32h7_clock_enable(const struct device *dev)
{
int ret;
@ -216,7 +204,7 @@ static const struct can_driver_api can_api_funcs = {
#endif
.get_core_clock = can_stm32h7_get_core_clock,
.get_max_bitrate = can_stm32h7_get_max_bitrate,
.get_max_filters = can_stm32h7_get_max_filters,
.get_max_filters = can_mcan_get_max_filters,
.set_state_change_callback = can_stm32h7_set_state_change_cb,
/* Timing limits are per the STM32H7 Reference Manual (RM0433 Rev 7),
* section 56.5.7, FDCAN nominal bit timing and prescaler register