canbus: canopen: Use new API to check number of filters

The previous CONFIG_CAN_MAX_FILTER is specific to certain drivers.

Using the new API makes the CAN open driver independent of the used
CAN hardware / driver.

Signed-off-by: Martin Jäger <[email protected]>

Author: martinjaeger

modules/canopennode/CO_driver.c

@@ -170,6 +170,7 @@ CO_ReturnError_t CO_CANmodule_init(CO_CANmodule_t *CANmodule,
 	struct canopen_context *ctx = (struct canopen_context *)CANdriverState;
 	uint16_t i;
 	int err;
+	int max_filters;
 
 	LOG_DBG("rxSize = %d, txSize = %d", rxSize, txSize);
 
@@ -178,15 +179,19 @@ CO_ReturnError_t CO_CANmodule_init(CO_CANmodule_t *CANmodule,
 		return CO_ERROR_ILLEGAL_ARGUMENT;
 	}
 
-	if (rxSize > CONFIG_CAN_MAX_FILTER) {
+	max_filters = can_get_max_filters(ctx->dev, CAN_STANDARD_IDENTIFIER);
+	if (max_filters < 0) {
+		LOG_ERR("unable to determine number of CAN RX filters");
+		return CO_ERROR_SYSCALL;
+	}
+
+	if (rxSize > max_filters) {
 		LOG_ERR("insufficient number of concurrent CAN RX filters"
-			" (needs %d, %d available)", rxSize,
-			CONFIG_CAN_MAX_FILTER);
+			" (needs %d, %d available)", rxSize, max_filters);
 		return CO_ERROR_OUT_OF_MEMORY;
-	} else if (rxSize < CONFIG_CAN_MAX_FILTER) {
+	} else if (rxSize < max_filters) {
 		LOG_DBG("excessive number of concurrent CAN RX filters enabled"
-			" (needs %d, %d available)", rxSize,
-			CONFIG_CAN_MAX_FILTER);
+			" (needs %d, %d available)", rxSize, max_filters);
 	}
 
 	canopen_detach_all_rx_filters(CANmodule);