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Commit 94f9e56e authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
Browse files

V4L/DVB (3403): Add probe check for the tda9840. 



- Add probe check for the tda9840 to prevent misdetection of a Micronas
  dpl3518a as a tda9840.

Signed-off-by: default avatarHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@infradead.org>
parent 53a72404

drivers/media/video/tvaudio.c

+9 −0
Original line number Diff line number Diff line
@@ -390,6 +390,14 @@ static void tda9840_setmode(struct CHIPSTATE *chip, int mode) 
		chip_write(chip, TDA9840_SW, t);

}



static int tda9840_checkit(struct CHIPSTATE *chip)

{

	int rc;

	rc = chip_read(chip);

	/* lower 5 bits should be 0 */

	return ((rc & 0x1f) == 0) ? 1 : 0;

}



/* ---------------------------------------------------------------------- */

/* audio chip descriptions - defines+functions for tda985x                */
@@ -1264,6 +1272,7 @@ static struct CHIPDESC chiplist[] = { 
		.addr_hi    = I2C_TDA9840 >> 1,

		.registers  = 5,



		.checkit    = tda9840_checkit,

		.getmode    = tda9840_getmode,

		.setmode    = tda9840_setmode,

		.checkmode  = generic_checkmode,