diff mbox

[3/3] gspca_zc3xx: Fix exposure with power line frequency for OV7648

Message ID 20180524150931.26574-3-linux@rainbow-software.org (mailing list archive)
State New, archived
Headers show

Commit Message

Ondrej Zary May 24, 2018, 3:09 p.m. UTC 
The 50Hz and 60Hz power line frequency settings disable short (1/120s
and 1/100s) exposure times for banding filter, causing overexposed
image near lamps. No flicker setting enables them (when banding
filter is disabled and they're not used).

Seems that the logic is just the wrong way around. Fix it.
(This bug came from the Windows driver.)

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
---
 drivers/media/usb/gspca/zc3xx.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)
diff mbox

Patch

diff --git a/drivers/media/usb/gspca/zc3xx.c b/drivers/media/usb/gspca/zc3xx.c
index 9a78420e8ad8..299ea70bfb67 100644
--- a/drivers/media/usb/gspca/zc3xx.c
+++ b/drivers/media/usb/gspca/zc3xx.c
@@ -3188,7 +3188,9 @@  static const struct usb_action ov7620_50HZ[] = {
 				 * don't change autoexposure */
 	{0xdd, 0x00, 0x0100},	/* 00,01,00,dd */
 	{0xaa, 0x2b, 0x0096},	/* 00,2b,96,aa */
-	{0xaa, 0x75, 0x008a},	/* 00,75,8a,aa */
+/*	{0xaa, 0x75, 0x008a},	 * 00,75,8a,aa */
+	/* enable 1/120s & 1/100s exposures for banding filter */
+	{0xaa, 0x75, 0x008e},
 	{0xaa, 0x2d, 0x0005},	/* 00,2d,05,aa */
 	{0xa0, 0x00, ZC3XX_R190_EXPOSURELIMITHIGH},	/* 01,90,00,cc */
 	{0xa0, 0x04, ZC3XX_R191_EXPOSURELIMITMID},	/* 01,91,04,cc */
@@ -3208,7 +3210,9 @@  static const struct usb_action ov7620_60HZ[] = {
 				 * don't change autoexposure */
 	{0xdd, 0x00, 0x0100},			/* 00,01,00,dd */
 	{0xaa, 0x2b, 0x0000},			/* 00,2b,00,aa */
-	{0xaa, 0x75, 0x008a},			/* 00,75,8a,aa */
+/*	{0xaa, 0x75, 0x008a},			 * 00,75,8a,aa */
+	/* enable 1/120s & 1/100s exposures for banding filter */
+	{0xaa, 0x75, 0x008e},
 	{0xaa, 0x2d, 0x0005},			/* 00,2d,05,aa */
 	{0xa0, 0x00, ZC3XX_R190_EXPOSURELIMITHIGH}, /* 01,90,00,cc */
 	{0xa0, 0x04, ZC3XX_R191_EXPOSURELIMITMID}, /* 01,91,04,cc */
@@ -3231,7 +3235,9 @@  static const struct usb_action ov7620_NoFliker[] = {
 				 * don't change autoexposure */
 	{0xdd, 0x00, 0x0100},			/* 00,01,00,dd */
 	{0xaa, 0x2b, 0x0000},			/* 00,2b,00,aa */
-	{0xaa, 0x75, 0x008e},			/* 00,75,8e,aa */
+/*	{0xaa, 0x75, 0x008e},			 * 00,75,8e,aa */
+	/* disable 1/120s & 1/100s exposures for banding filter */
+	{0xaa, 0x75, 0x008a},
 	{0xaa, 0x2d, 0x0001},			/* 00,2d,01,aa */
 	{0xa0, 0x00, ZC3XX_R190_EXPOSURELIMITHIGH}, /* 01,90,00,cc */
 	{0xa0, 0x04, ZC3XX_R191_EXPOSURELIMITMID}, /* 01,91,04,cc */