[PATCH] media: ov5693: add OVTI5693 ACPI HID for IPU6 Surface devices

[Fernando Rimoli <fernandorimoli11@gmail.com>]

The ov5693 driver only matches the "INT33BE" ACPI HID. Some Intel IPU6
Surface devices (e.g. Microsoft Surface Pro 9) enumerate the same OV5693
front camera with the ACPI HID "OVTI5693" instead. Without this HID the
i2c core never binds the driver, and the IPU bridge never builds the
firmware node graph for the sensor, so the front camera is unusable.

Add "OVTI5693" to the sensor driver's ACPI match table and to the IPU
bridge's supported-sensor list. The link frequency (419200000) matches
the existing INT33BE entry, as it is the same sensor. Devices that use
"INT33BE" (e.g. Surface Go 4) are unaffected.

Tested on Surface Pro 9 (IPU6): the sensor enumerates as OVTI5693:00
(ACPI path \_SB_.PC00.I2C3.CAMF) and binds with this change.

Link: https://github.com/linux-surface/linux-surface/pull/2171
Signed-off-by: Fernando Rimoli <fernandorimoli11@gmail.com>
---
Note: this HID addition makes the sensor bind and enumerate, but a fully
working front camera on IPU6 also requires programming MIPI_CTRL00
(0x4800 = 0x2d) before stream-on, otherwise the IPU6 CSI-2 receiver never
locks and capture times out. That register change is being handled
separately (see the Link: above). This patch is independent and useful on
its own for enumeration, so I'm sending it standalone; happy to reorder if
you'd prefer it after the register fix.

 drivers/media/i2c/ov5693.c           | 1 +
 drivers/media/pci/intel/ipu-bridge.c | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/media/i2c/ov5693.c b/drivers/media/i2c/ov5693.c
index 4cc796bbe..02236f3db 100644
--- a/drivers/media/i2c/ov5693.c
+++ b/drivers/media/i2c/ov5693.c
@@ -1396,6 +1396,7 @@ static const struct dev_pm_ops ov5693_pm_ops = {
 
 static const struct acpi_device_id ov5693_acpi_match[] = {
 	{"INT33BE"},
+	{"OVTI5693"},
 	{},
 };
 MODULE_DEVICE_TABLE(acpi, ov5693_acpi_match);
diff --git a/drivers/media/pci/intel/ipu-bridge.c b/drivers/media/pci/intel/ipu-bridge.c
index 88581a4c0..b70d61099 100644
--- a/drivers/media/pci/intel/ipu-bridge.c
+++ b/drivers/media/pci/intel/ipu-bridge.c
@@ -93,6 +93,8 @@ static const struct ipu_sensor_config ipu_supported_sensors[] = {
 	IPU_SENSOR_CONFIG("OVTI2680", 1, 331200000),
 	/* Omnivision OV5675 */
 	IPU_SENSOR_CONFIG("OVTI5675", 1, 450000000),
+	/* Omnivision OV5693 */
+	IPU_SENSOR_CONFIG("OVTI5693", 1, 419200000),
 	/* Omnivision OV8856 */
 	IPU_SENSOR_CONFIG("OVTI8856", 3, 180000000, 360000000, 720000000),
 	/* Sony IMX471 */
-- 
2.43.0