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| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-07-23 02:24:33 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-01-05 01:49:00 +0100 |
| commit | 19ad6a01bbb011b88b7a12a5baad6888cf216b35 (patch) | |
| tree | 30eba50d15ecb864983a9bf7b4984e28577985fd /drivers/media/common | |
| parent | [media] mt2063: don't crash if device is not initialized (diff) | |
| download | linux-19ad6a01bbb011b88b7a12a5baad6888cf216b35.tar.xz linux-19ad6a01bbb011b88b7a12a5baad6888cf216b35.zip | |
[media] mt2063: Print a message about the detected mt2063 type
This also helps to identify when a device is not initialized,
if the bridge doesn't return an error for a I2C failed transfer.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/common')
| -rw-r--r-- | drivers/media/common/tuners/mt2063.c | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/drivers/media/common/tuners/mt2063.c b/drivers/media/common/tuners/mt2063.c index db347d9e7d45..fdf605034ca6 100644 --- a/drivers/media/common/tuners/mt2063.c +++ b/drivers/media/common/tuners/mt2063.c @@ -1790,6 +1790,7 @@ static int mt2063_init(struct dvb_frontend *fe) struct mt2063_state *state = fe->tuner_priv; u8 all_resets = 0xF0; /* reset/load bits */ const u8 *def = NULL; + char *step; u32 FCRUN; s32 maxReads; u32 fcu_osc; @@ -1807,10 +1808,24 @@ static int mt2063_init(struct dvb_frontend *fe) } /* Check the part/rev code */ - if (((state->reg[MT2063_REG_PART_REV] != MT2063_B0) /* MT2063 B0 */ - && (state->reg[MT2063_REG_PART_REV] != MT2063_B1) /* MT2063 B1 */ - && (state->reg[MT2063_REG_PART_REV] != MT2063_B3))) /* MT2063 B3 */ + switch (state->reg[MT2063_REG_PART_REV]) { + 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", + state->reg[MT2063_REG_PART_REV]); return -ENODEV; /* Wrong tuner Part/Rev code */ + } /* Check the 2nd byte of the Part/Rev code from the tuner */ status = mt2063_read(state, MT2063_REG_RSVD_3B, @@ -1818,10 +1833,13 @@ static int mt2063_init(struct dvb_frontend *fe) /* b7 != 0 ==> NOT MT2063 */ if (status < 0 || ((state->reg[MT2063_REG_RSVD_3B] & 0x80) != 0x00)) { - printk(KERN_ERR "Can't read mt2063 2nd part ID\n"); + printk(KERN_ERR "mt2063: Unknown 2nd part ID\n"); return -ENODEV; /* Wrong tuner Part/Rev code */ } + dprintk(1, "Discovered a mt2063 %s (2nd part number 0x%02x)\n", + step, state->reg[MT2063_REG_RSVD_3B]); + /* Reset the tuner */ status = mt2063_write(state, MT2063_REG_LO2CQ_3, &all_resets, 1); if (status < 0) |