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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_rcar.c
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@ -981,6 +981,13 @@ static int can_rcar_get_core_clock(const struct device *dev, uint32_t *rate)
return 0;
}
int can_rcar_get_max_filters(const struct device *dev, enum can_ide id_type)
{
ARG_UNUSED(id_type);
return CONFIG_CAN_RCAR_MAX_FILTER;
}
static const struct can_driver_api can_rcar_driver_api = {
.set_mode = can_rcar_set_mode,
.set_timing = can_rcar_set_timing,
@ -993,6 +1000,7 @@ static const struct can_driver_api can_rcar_driver_api = {
#endif
.register_state_change_isr = can_rcar_register_state_change_isr,
.get_core_clock = can_rcar_get_core_clock,
.get_max_filters = can_rcar_get_max_filters,
.timing_min = {
.sjw = 0x1,
.prop_seg = 0x00,