diff options
| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-07-23 16:48:08 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-01-05 04:49:01 +0400 |
| commit | 36ae6df08356609c931e66306b3cb88c22eb055d (patch) | |
| tree | 584885babfc259943bf826c494fdbf074b11affc /drivers/media/common/tuners/mt2063.c | |
| parent | 19ad6a01bbb011b88b7a12a5baad6888cf216b35 (diff) | |
| download | linux-36ae6df08356609c931e66306b3cb88c22eb055d.tar.xz | |
[media] mt2063: Fix i2c read message
While here, improve a few debug messages that helped to track the
issue and may be useful in the future.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/common/tuners/mt2063.c')
| -rw-r--r-- | drivers/media/common/tuners/mt2063.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/drivers/media/common/tuners/mt2063.c b/drivers/media/common/tuners/mt2063.c index fdf605034ca6..599f8644ef11 100644 --- a/drivers/media/common/tuners/mt2063.c +++ b/drivers/media/common/tuners/mt2063.c @@ -305,35 +305,40 @@ static u32 mt2063_read(struct mt2063_state *state, struct dvb_frontend *fe = state->frontend; u32 i = 0; - dprintk(2, "\n"); + dprintk(2, "addr 0x%02x, cnt %d\n", subAddress, cnt); if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 1); for (i = 0; i < cnt; i++) { - int ret; u8 b0[] = { subAddress + i }; struct i2c_msg msg[] = { { .addr = state->config->tuner_address, - .flags = I2C_M_RD, + .flags = 0, .buf = b0, .len = 1 }, { .addr = state->config->tuner_address, .flags = I2C_M_RD, - .buf = pData + 1, + .buf = pData + i, .len = 1 } }; - ret = i2c_transfer(state->i2c, msg, 2); - if (ret < 0) + status = i2c_transfer(state->i2c, msg, 2); + dprintk(2, "addr 0x%02x, ret = %d, val = 0x%02x\n", + subAddress + i, status, *(pData + i)); + if (status < 0) break; } if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0); + if (status < 0) + printk(KERN_ERR "Can't read from address 0x%02x,\n", + subAddress + i); + return status; } @@ -1801,7 +1806,8 @@ static int mt2063_init(struct dvb_frontend *fe) state->rcvr_mode = MT2063_CABLE_QAM; /* Read the Part/Rev code from the tuner */ - status = mt2063_read(state, MT2063_REG_PART_REV, state->reg, 1); + status = mt2063_read(state, MT2063_REG_PART_REV, + &state->reg[MT2063_REG_PART_REV], 1); if (status < 0) { printk(KERN_ERR "Can't read mt2063 part ID\n"); return status; @@ -1833,7 +1839,9 @@ 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 "mt2063: Unknown 2nd part ID\n"); + printk(KERN_ERR "mt2063: Unknown part ID (0x%02x%02x)\n", + state->reg[MT2063_REG_PART_REV], + state->reg[MT2063_REG_RSVD_3B]); return -ENODEV; /* Wrong tuner Part/Rev code */ } |