media: i2c: ov9282: Correct the exposure offset

The datasheet lists that "Maximum exposure time is frame length -25 row periods, where frame length is set by registers {0x380E, 0x380F}". However this driver had OV9282_EXPOSURE_OFFSET set to 12 which allowed that restriction to be violated, and would result in very under-exposed images. Correct the offset. Fixes: 14ea315 ("media: i2c: Add ov9282 camera sensor driver") Signed-off-by: Dave Stevenson <[email protected]>
raspberrypi · Dec 10, 2024 · 37cb5f7 · 37cb5f7
1 parent c2f746f
commit 37cb5f7
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/media/i2c/ov9282.c b/drivers/media/i2c/ov9282.c
@@ -40,7 +40,7 @@
 /* Exposure control */
 #define OV9282_REG_EXPOSURE	0x3500
 #define OV9282_EXPOSURE_MIN	1
-#define OV9282_EXPOSURE_OFFSET	12
+#define OV9282_EXPOSURE_OFFSET	25
 #define OV9282_EXPOSURE_STEP	1
 #define OV9282_EXPOSURE_DEFAULT	0x0282