[PATCH 4/8] media: atomisp: Add Yoga Book camera configuration

[Maurizio Casciano <mauriziocasciano7@gmail.com>]

The Yoga Book YB1-X91 firmware lacks usable AtomISP configuration for
both cameras. Rear INT3477 OV8858 uses four CSI-2 lanes and a WV517S
actuator; front OVTI2740 uses two lanes and no actuator.

Add both sensor configurations and a DMI-scoped two-lane override for
OVTI2740:00. Keep the quirk limited to Lenovo YB1-X91L systems.

Binding and media nodes do not prove streaming; both sensors and the
focus actuator still require physical tests.

Signed-off-by: Maurizio Casciano <mauriziocasciano7@gmail.com>
Assisted-by: Codex:gpt-5.6-sol sparse
---
 .../media/atomisp/pci/atomisp_csi2_bridge.c      | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/staging/media/atomisp/pci/atomisp_csi2_bridge.c b/drivers/staging/media/atomisp/pci/atomisp_csi2_bridge.c
index cca91c6d71a5..207ab69385b5 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_csi2_bridge.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_csi2_bridge.c
@@ -74,6 +74,12 @@ static struct gmin_cfg_var lenovo_ideapad_miix_310_vars[] = {
 	{}
 };
 
+static struct gmin_cfg_var lenovo_yogabook_x91_vars[] = {
+	/* The vendor driver and sensor modes use two CSI data lanes. */
+	{ "OVTI2740:00", "CsiLanes", "2" },
+	{}
+};
+
 static struct gmin_cfg_var xiaomi_mipad2_vars[] = {
 	/* _DSM contains the wrong CsiPort for the front facing OV5693 sensor */
 	{ "INT33BE:00", "CsiPort", "0" },
@@ -83,6 +89,14 @@ static struct gmin_cfg_var xiaomi_mipad2_vars[] = {
 };
 
 static const struct dmi_system_id gmin_cfg_dmi_overrides[] = {
+	{
+		/* Lenovo Yoga Book X91L */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X91L"),
+		},
+		.driver_data = lenovo_yogabook_x91_vars,
+	},
 	{
 		/* Lenovo Ideapad Miix 310 */
 		.matches = {
@@ -360,6 +374,8 @@ static const struct acpi_device_id atomisp_sensor_configs[] = {
 	 * an i2c-client for the VCM, so it is disabled for now.
 	 */
 	ATOMISP_SENSOR_CONFIG("INT33BE", 2, false),	/* OV5693 */
+	ATOMISP_SENSOR_CONFIG("INT3477", 4, true),	/* OV8858 */
+	ATOMISP_SENSOR_CONFIG("OVTI2740", 2, false),	/* OV2740 */
 	{}
 };
 
-- 
2.53.0