iio: adc: ad4080: enable address ascension for chip identification

The two byte bulk read at AD4080_REG_PRODUCT_ID_L expects PRODUCT_ID_L
followed by PRODUCT_ID_H. After a software reset the AD408x defaults to
descending address mode, so the second byte comes from CHIP_TYPE (0x03)
instead. CHIP_TYPE reads 0x07 on all AD408x parts, so an AD4080 reports
0x0750 rather than 0x0050 and every part logs "Unrecognized CHIP_ID".

Set ADDR_ASC along with SDO_ENABLE before the read. This is the only
multi byte transfer in the driver, so no other access is affected.

Fixes: b66cddc8be72 ("iio: adc: ad4080: fix chip identification")
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>

0 files changed, 0 insertions, 0 deletions