- add missing initialisation of sensor register COM25 (2 MSBs of banding
filter AEC values)
- add macros for setting the banding filter AEC values
- add definitions for sensor register 0x5a, which is documented in
Omnivisions software application notes
Signed-off-by: Frank Schäfer <fschaefer.oss@xxxxxxxxxxxxxx>
---
drivers/media/i2c/ov2640.c | 20 +++++++++++++++++---
1 file changed, 17 insertions(+), 3 deletions(-)
diff --git a/drivers/media/i2c/ov2640.c b/drivers/media/i2c/ov2640.c
index df9f6c7a929c..fd1b215b6dec 100644
--- a/drivers/media/i2c/ov2640.c
+++ b/drivers/media/i2c/ov2640.c
@@ -248,8 +248,19 @@
#define ZOOMS 0x49 /* Zoom: Vertical start point */
#define COM22 0x4B /* Flash light control */
#define COM25 0x4E /* For Banding operations */
+#define COM25_50HZ_BANDING_AEC_MSBS_MASK 0xC0 /* 50Hz Bd. AEC 2 MSBs */
+#define COM25_60HZ_BANDING_AEC_MSBS_MASK 0x30 /* 60Hz Bd. AEC 2 MSBs */
+#define COM25_50HZ_BANDING_AEC_MSBS_SET(x) VAL_SET(x, 0x3, 8, 6)
+#define COM25_60HZ_BANDING_AEC_MSBS_SET(x) VAL_SET(x, 0x3, 8, 4)
#define BD50 0x4F /* 50Hz Banding AEC 8 LSBs */
+#define BD50_50HZ_BANDING_AEC_LSBS_SET(x) VAL_SET(x, 0xFF, 0, 0)
#define BD60 0x50 /* 60Hz Banding AEC 8 LSBs */
+#define BD60_60HZ_BANDING_AEC_LSBS_SET(x) VAL_SET(x, 0xFF, 0, 0)
+#define REG5A 0x5A /* 50/60Hz Banding Maximum AEC Step */
+#define BD50_MAX_AEC_STEP_MASK 0xF0 /* 50Hz Banding Max. AEC Step */
+#define BD60_MAX_AEC_STEP_MASK 0x0F /* 60Hz Banding Max. AEC Step */
+#define BD50_MAX_AEC_STEP_SET(x) VAL_SET((x - 1), 0x0F, 0, 4)
+#define BD60_MAX_AEC_STEP_SET(x) VAL_SET((x - 1), 0x0F, 0, 0)
#define REG5D 0x5D /* AVGsel[7:0], 16-zone average weight option */
#define REG5E 0x5E /* AVGsel[15:8], 16-zone average weight option */
#define REG5F 0x5F /* AVGsel[23:16], 16-zone average weight option */
@@ -356,9 +367,12 @@ static const struct regval_list ov2640_init_regs[] = {
{ 0x73, 0xc1 },
{ 0x3d, 0x34 },
{ COM7, COM7_RES_UXGA | COM7_ZOOM_EN },
- { 0x5a, 0x57 },
- { BD50, 0xbb },
- { BD60, 0x9c },
+ { REG5A, BD50_MAX_AEC_STEP_SET(6)
+ | BD60_MAX_AEC_STEP_SET(8) }, /* 0x57 */
+ { COM25, COM25_50HZ_BANDING_AEC_MSBS_SET(0x0bb)
+ | COM25_60HZ_BANDING_AEC_MSBS_SET(0x09c) }, /* 0x00 */
+ { BD50, BD50_50HZ_BANDING_AEC_LSBS_SET(0x0bb) }, /* 0xbb */
+ { BD60, BD60_60HZ_BANDING_AEC_LSBS_SET(0x09c) }, /* 0x9c */
{ BANK_SEL, BANK_SEL_DSP },
{ 0xe5, 0x7f },
{ MC_BIST, MC_BIST_RESET | MC_BIST_BOOT_ROM_SEL },
--
2.12.2
