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[media] gspca - ov519: Fix sensor detection problems

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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: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Jean-François Moine
2011-07-03 05:17:27 -03:00
committed by Mauro Carvalho Chehab
parent 686a9488cd
commit b877a9a7fb
1 changed files with 3 additions and 0 deletions
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3
drivers/media/video/gspca/ov519.c
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@@ -2432,9 +2432,12 @@ static int ov518_i2c_r(struct sd *sd, u8 reg)
/* Initiate 2-byte write cycle */ /* Initiate 2-byte write cycle */
reg_w(sd, R518_I2C_CTL, 0x03); reg_w(sd, R518_I2C_CTL, 0x03);
reg_r8(sd, R518_I2C_CTL);
/* Initiate 2-byte read cycle */ /* Initiate 2-byte read cycle */
reg_w(sd, R518_I2C_CTL, 0x05); reg_w(sd, R518_I2C_CTL, 0x05);
reg_r8(sd, R518_I2C_CTL);
value = reg_r(sd, R51x_I2C_DATA); value = reg_r(sd, R51x_I2C_DATA);
PDEBUG(D_USBI, "ov518_i2c_r %02x %02x", reg, value); PDEBUG(D_USBI, "ov518_i2c_r %02x %02x", reg, value);
return value; return value;