From: Stefan Ringel <[email protected]>
Signed-off-by: Stefan Ringel <[email protected]>
---
drivers/media/common/tuners/mt2063.c | 43 ++++++++++++++++++++++++++++++++++
1 files changed, 43 insertions(+), 0 deletions(-)
diff --git a/drivers/media/common/tuners/mt2063.c
b/drivers/media/common/tuners/mt2063.c
index 7dd1d7c..a717479 100644
--- a/drivers/media/common/tuners/mt2063.c
+++ b/drivers/media/common/tuners/mt2063.c
@@ -557,18 +557,60 @@ static struct dvb_tuner_ops mt2063_ops = {
/* TODO */
};
+static int mt2063_find_chip(struct mt2063_state *state)
{
+ int err;
+ u8 chip = 0, chip_hi = 0;
+ char *step;
+ struct dvb_frontend *fe = state->frontend;
+ dprintk(1, "\n");
+ /* open gate */
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+ /* Read the Part/Rev code from the tuner */
+ err = mt2063_read(state, MT2063_REG_PART_REV, &chip);
+ if (err < 0) {
+ printk(KERN_ERR "Can't read mt2063 part ID\n");
+ return -ENODEV;
+ }
+
+ /* Check the part/rev code */
+ switch (chip) {
+ case MT2063_B0:
+ step = "B0";
break;
+ case MT2063_B1:
+ step = "B1";
+ break;
+ case MT2063_B2:
+ step = "B2";
+ break;
+ case MT2063_B3:
+ step = "B3";
break;
default:
+ printk(KERN_ERR "mt2063: Unknown mt2063 device ID (0x%02x)\n",
+ chip);
return -ENODEV;
+ }
+ /* Check the 2nd byte of the Part/Rev code from the tuner */
+ mt2063_read(state, MT2063_REG_RSVD_3B, &chip_hi);
+ if ((chip_hi & 0x80) != 0x00) {
+ printk(KERN_ERR "mt2063: Unknown part ID (0x%02x%02x)\n",
+ chip, chip_hi);
return -ENODEV;
+ }
+ printk(KERN_INFO "mt2063: detected a mt2063 rev %s", step);
+ state->tuner_id = chip;
+ /* close gate */
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
return 0;
}
@@ -599,6 +641,7 @@ struct dvb_frontend *mt2063_attach(struct dvb_frontend *fe,
/* find chip */
mutex_init(&state->lock);
state->frontend = fe;
+ ret = mt2063_find_chip(state);
if (ret < 0)
goto fail;
fe->tuner_priv = state;
--
1.7.7.6
--
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