-static int cx18_g_chip_ident(struct file *file, void *fh,
- struct v4l2_dbg_chip_ident *chip)
-{
- struct cx18 *cx = fh2id(fh)->cx;
- int err = 0;
-
- chip->ident = V4L2_IDENT_NONE;
- chip->revision = 0;
- switch (chip->match.type) {
- case V4L2_CHIP_MATCH_HOST:
- switch (chip->match.addr) {
- case 0:
- chip->ident = V4L2_IDENT_CX23418;
- chip->revision = cx18_read_reg(cx, 0xC72028);
- break;
- case 1:
- /*
- * The A/V decoder is always present, but in the rare
- * case that the card doesn't have analog, we don't
- * use it. We find it w/o using the cx->sd_av pointer
- */
- cx18_call_hw(cx, CX18_HW_418_AV,
- core, g_chip_ident, chip);
- break;
- default:
- /*
- * Could return ident = V4L2_IDENT_UNKNOWN if we had
- * other host chips at higher addresses, but we don't
- */
- err = -EINVAL; /* per V4L2 spec */
- break;
- }
- break;
- case V4L2_CHIP_MATCH_I2C_DRIVER:
- /* If needed, returns V4L2_IDENT_AMBIGUOUS without extra work */
- cx18_call_all(cx, core, g_chip_ident, chip);
- break;
- case V4L2_CHIP_MATCH_I2C_ADDR:
- /*
- * We could return V4L2_IDENT_UNKNOWN, but we don't do the work
- * to look if a chip is at the address with no driver. That's a
- * dangerous thing to do with EEPROMs anyway.
- */
- cx18_call_all(cx, core, g_chip_ident, chip);
- break;
- default:
- err = -EINVAL;
- break;
- }
- return err;
-}
-