drivers: can: take minimum supported bitrate into consideration

Take the minimum supported bitrate into consideration when validating the
bitrate.

Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>

drivers/can/can_common.c

@@ -338,10 +338,13 @@ int z_impl_can_set_timing(const struct device *dev,
 int z_impl_can_set_bitrate(const struct device *dev, uint32_t bitrate)
 {
 	struct can_timing timing = { 0 };
+	uint32_t min_bitrate;
 	uint32_t max_bitrate;
 	uint16_t sample_pnt;
 	int ret;
 
+	(void)can_get_min_bitrate(dev, &min_bitrate);
+
 	ret = can_get_max_bitrate(dev, &max_bitrate);
 	if (ret == -ENOSYS) {
 		/* Maximum bitrate unknown */
@@ -350,7 +353,7 @@ int z_impl_can_set_bitrate(const struct device *dev, uint32_t bitrate)
 		return ret;
 	}
 
-	if ((max_bitrate > 0) && (bitrate > max_bitrate)) {
+	if ((bitrate < min_bitrate) || (((max_bitrate > 0) && (bitrate > max_bitrate)))) {
 		return -ENOTSUP;
 	}
 
@@ -391,10 +394,13 @@ int z_impl_can_set_timing_data(const struct device *dev,
 int z_impl_can_set_bitrate_data(const struct device *dev, uint32_t bitrate_data)
 {
 	struct can_timing timing_data = { 0 };
+	uint32_t min_bitrate;
 	uint32_t max_bitrate;
 	uint16_t sample_pnt;
 	int ret;
 
+	(void)can_get_min_bitrate(dev, &min_bitrate);
+
 	ret = can_get_max_bitrate(dev, &max_bitrate);
 	if (ret == -ENOSYS) {
 		/* Maximum bitrate unknown */
@@ -403,7 +409,7 @@ int z_impl_can_set_bitrate_data(const struct device *dev, uint32_t bitrate_data)
 		return ret;
 	}
 
-	if ((max_bitrate > 0) && (bitrate_data > max_bitrate)) {
+	if ((bitrate_data < min_bitrate) || ((max_bitrate > 0) && (bitrate_data > max_bitrate))) {
 		return -ENOTSUP;
 	}