Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 4b8ceb6c authored by Hans de Goede's avatar Hans de Goede Committed by Mauro Carvalho Chehab
Browse files

[media] gspca_pac7311: Convert multi-line comments to standard kernel style 



Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent ccab75e2

drivers/media/video/gspca/pac7311.c

+33 −29
Original line number Diff line number Diff line
@@ -20,28 +20,28 @@ 
 */



/* Some documentation about various registers as determined by trial and error.



   Register page 1:



   Address	Description

   0x08		Unknown compressor related, must always be 8 except when not

		in 640x480 resolution and page 4 reg 2 <= 3 then set it to 9 !

   0x1b		Auto white balance related, bit 0 is AWB enable (inverted)

		bits 345 seem to toggle per color gains on/off (inverted)

   0x78		Global control, bit 6 controls the LED (inverted)

   0x80		JPEG compression ratio ? Best not touched



   Register page 4:



   Address	Description

   0x02		Clock divider 2-63, fps =~ 60 / val. Must be a multiple of 3 on

		the 7302, so one of 3, 6, 9, ..., except when between 6 and 12?

   0x0f		Master gain 1-245, low value = high gain

   0x10		Another gain 0-15, limited influence (1-2x gain I guess)

   0x21		Bitfield: 0-1 unused, 2-3 vflip/hflip, 4-5 unknown, 6-7 unused

   0x27		Seems to toggle various gains on / off, Setting bit 7 seems to

		completely disable the analog amplification block. Set to 0x68

		for max gain, 0x14 for minimal gain.

 *

 * Register page 1:

 *

 * Address	Description

 * 0x08		Unknown compressor related, must always be 8 except when not

 *		in 640x480 resolution and page 4 reg 2 <= 3 then set it to 9 !

 * 0x1b		Auto white balance related, bit 0 is AWB enable (inverted)

 *		bits 345 seem to toggle per color gains on/off (inverted)

 * 0x78		Global control, bit 6 controls the LED (inverted)

 * 0x80		JPEG compression ratio ? Best not touched

 *

 * Register page 4:

 *

 * Address	Description

 * 0x02		Clock divider 2-63, fps =~ 60 / val. Must be a multiple of 3 on

 *		the 7302, so one of 3, 6, 9, ..., except when between 6 and 12?

 * 0x0f		Master gain 1-245, low value = high gain

 * 0x10		Another gain 0-15, limited influence (1-2x gain I guess)

 * 0x21		Bitfield: 0-1 unused, 2-3 vflip/hflip, 4-5 unknown, 6-7 unused

 * 0x27		Seems to toggle various gains on / off, Setting bit 7 seems to

 *		completely disable the analog amplification block. Set to 0x68

 *		for max gain, 0x14 for minimal gain.

 */



#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
@@ -403,8 +403,10 @@ static void setexposure(struct gspca_dev *gspca_dev) 
	/* load registers to sensor (Bit 0, auto clear) */

	reg_w(gspca_dev, 0x11, 0x01);



	/* Page 1 register 8 must always be 0x08 except when not in

	   640x480 mode and page 4 reg 2 <= 3 then it must be 9 */

	/*

	 * Page 1 register 8 must always be 0x08 except when not in

	 *  640x480 mode and page 4 reg 2 <= 3 then it must be 9

	 */

	reg_w(gspca_dev, 0xff, 0x01);

	if (gspca_dev->cam.cam_mode[(int)gspca_dev->curr_mode].priv &&

			sd->ctrls[EXPOSURE].val <= 3) {
@@ -577,10 +579,12 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev, 
	if (sof) {

		int n, lum_offset, footer_length;



		/* 6 bytes after the FF D9 EOF marker a number of lumination

		   bytes are send corresponding to different parts of the

		   image, the 14th and 15th byte after the EOF seem to

		   correspond to the center of the image */

		/*

		 * 6 bytes after the FF D9 EOF marker a number of lumination

		 * bytes are send corresponding to different parts of the

		 * image, the 14th and 15th byte after the EOF seem to

		 * correspond to the center of the image.

		 */

		lum_offset = 24 + sizeof pac_sof_marker;

		footer_length = 26;