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drivers: can: Add get_max_filters API

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The maximum number of concurrent filters depends on the hardware and
the driver implementation. This API allows the application to obtain
the maximum number of available filters.

Signed-off-by: Martin Jäger <martin@libre.solar>
This commit is contained in:
Martin Jäger 2021-10-12 11:46:44 +02:00 • committed by Christopher Friedt
commit 5511cba5fe
7 changed files with 78 additions and 0 deletions
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8
drivers/can/can_mcux_flexcan.c
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@ -127,6 +127,13 @@ static int mcux_flexcan_get_core_clock(const struct device *dev, uint32_t *rate)
return clock_control_get_rate(config->clock_dev, config->clock_subsys, rate);
}
int mcux_flexcan_get_max_filters(const struct device *dev, enum can_ide id_type)
{
ARG_UNUSED(id_type);
return CONFIG_CAN_MAX_FILTER;
}
static int mcux_flexcan_set_timing(const struct device *dev,
const struct can_timing *timing,
const struct can_timing *timing_data)
@ -747,6 +754,7 @@ static const struct can_driver_api mcux_flexcan_driver_api = {
#endif
.register_state_change_isr = mcux_flexcan_register_state_change_isr,
.get_core_clock = mcux_flexcan_get_core_clock,
.get_max_filters = mcux_flexcan_get_max_filters,
/*
* FlexCAN timing limits are specified in the "FLEXCANx_CTRL1 field
* descriptions" table in the SoC reference manual.