diff options
| -rw-r--r-- | drivers/staging/tm6000/tm6000-i2c.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/staging/tm6000/tm6000-i2c.c b/drivers/staging/tm6000/tm6000-i2c.c index a5323303c34..ec4c9381c14 100644 --- a/drivers/staging/tm6000/tm6000-i2c.c +++ b/drivers/staging/tm6000/tm6000-i2c.c @@ -56,9 +56,23 @@ static int tm6000_i2c_recv_regs(struct tm6000_core *dev, unsigned char addr, __u8 reg, char *buf, int len) { int rc; + u8 b[2]; - rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + if ((dev->caps.has_zl10353) && (dev->demod_addr << 1 == addr) && (reg % 2 == 0)) { + /* + * Workaround an I2C bug when reading from zl10353 + */ + reg -= 1; + len += 1; + + rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + REQ_16_SET_GET_I2C_WR1_RDN, addr | reg << 8, 0, b, len); + + *buf = b[1]; + } else { + rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, REQ_16_SET_GET_I2C_WR1_RDN, addr | reg << 8, 0, buf, len); + } return rc; } |