can: kvaser_usb: leaf: Replace kvaser_usb_leaf_m32c_dev_cfg with kvaser_usb_leaf_m32c_dev_cfg_{16,24,32}mhz

Add new struct kvaser_usb_dev_cfg constants,
kvaser_usb_leaf_m32c_dev_cfg_{16,24,32}mhz,
for M32C based leaf devices.

Note that the bittiming parameters are always calculated for 16MHz clock,
while the timestamps are in the actual clock frequency of the device.

Signed-off-by: Jimmy Assarsson <[email protected]>
Reviewed-by: Vincent Mailhol <[email protected]>
Link: https://lore.kernel.org/all/[email protected]
Signed-off-by: Marc Kleine-Budde <[email protected]>

Author: Jimmy Assarsson

drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c

@@ -471,11 +471,27 @@ static const struct kvaser_usb_dev_cfg kvaser_usb_leaf_usbcan_dev_cfg = {
 	.bittiming_const = &kvaser_usb_leaf_m16c_bittiming_const,
 };
 
-static const struct kvaser_usb_dev_cfg kvaser_usb_leaf_m32c_dev_cfg = {
+static const struct kvaser_usb_dev_cfg kvaser_usb_leaf_m32c_dev_cfg_16mhz = {
 	.clock = {
 		.freq = 16 * MEGA /* Hz */,
 	},
-	.timestamp_freq = 1,
+	.timestamp_freq = 16,
+	.bittiming_const = &kvaser_usb_leaf_m32c_bittiming_const,
+};
+
+static const struct kvaser_usb_dev_cfg kvaser_usb_leaf_m32c_dev_cfg_24mhz = {
+	.clock = {
+		.freq = 16 * MEGA /* Hz */,
+	},
+	.timestamp_freq = 24,
+	.bittiming_const = &kvaser_usb_leaf_m32c_bittiming_const,
+};
+
+static const struct kvaser_usb_dev_cfg kvaser_usb_leaf_m32c_dev_cfg_32mhz = {
+	.clock = {
+		.freq = 16 * MEGA /* Hz */,
+	},
+	.timestamp_freq = 32,
 	.bittiming_const = &kvaser_usb_leaf_m32c_bittiming_const,
 };
 
@@ -686,8 +702,19 @@ static void kvaser_usb_leaf_get_software_info_leaf(struct kvaser_usb *dev,
 	if (dev->driver_info->quirks & KVASER_USB_QUIRK_IGNORE_CLK_FREQ) {
 		/* Firmware expects bittiming parameters calculated for 16MHz
 		 * clock, regardless of the actual clock
+		 * Though, the reported freq is used for timestamps
 		 */
-		dev->cfg = &kvaser_usb_leaf_m32c_dev_cfg;
+		switch (sw_options & KVASER_USB_LEAF_SWOPTION_FREQ_MASK) {
+		case KVASER_USB_LEAF_SWOPTION_FREQ_16_MHZ_CLK:
+			dev->cfg = &kvaser_usb_leaf_m32c_dev_cfg_16mhz;
+			break;
+		case KVASER_USB_LEAF_SWOPTION_FREQ_24_MHZ_CLK:
+			dev->cfg = &kvaser_usb_leaf_m32c_dev_cfg_24mhz;
+			break;
+		case KVASER_USB_LEAF_SWOPTION_FREQ_32_MHZ_CLK:
+			dev->cfg = &kvaser_usb_leaf_m32c_dev_cfg_32mhz;
+			break;
+		}
 	} else {
 		switch (sw_options & KVASER_USB_LEAF_SWOPTION_FREQ_MASK) {
 		case KVASER_USB_LEAF_SWOPTION_FREQ_16_MHZ_CLK: