Commit b877a9a7 authored by Jean-François Moine's avatar Jean-François Moine Committed by Mauro Carvalho Chehab
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[media] gspca - ov519: Fix sensor detection problems 



The sensor of some webcams could not be detected due to timing problems
in sensor register reading. This patch adds bridge register readings
before sensor register reading.

Signed-off-by: default avatarJean-François Moine <moinejf@free.fr>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 686a9488

drivers/media/video/gspca/ov519.c

+3 −0
Original line number Diff line number Diff line
@@ -2432,9 +2432,12 @@ static int ov518_i2c_r(struct sd *sd, u8 reg) 


	/* Initiate 2-byte write cycle */

	reg_w(sd, R518_I2C_CTL, 0x03);

	reg_r8(sd, R518_I2C_CTL);



	/* Initiate 2-byte read cycle */

	reg_w(sd, R518_I2C_CTL, 0x05);

	reg_r8(sd, R518_I2C_CTL);



	value = reg_r(sd, R51x_I2C_DATA);

	PDEBUG(D_USBI, "ov518_i2c_r %02x %02x", reg, value);

	return value;