mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-22 17:01:14 +00:00
V4L/DVB (5215): Experimental support for signal strength/BER/uncorrectable count
After studying many hours worth of register dumps of MT352 and ZL10353 fed with identically damaged RF signals I have made an educated guess at which registers contain the AGC level, bit error rate and uncorrectable error count values. Implement the IOCTLs that return these values to userspace. Signed-off-by: Chris Pascoe <c.pascoe@itee.uq.edu.au> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
parent
90060d32ca
commit
67b60aad16
1 changed files with 36 additions and 0 deletions
|
@ -213,6 +213,29 @@ static int zl10353_read_status(struct dvb_frontend *fe, fe_status_t *status)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int zl10353_read_ber(struct dvb_frontend *fe, u32 *ber)
|
||||
{
|
||||
struct zl10353_state *state = fe->demodulator_priv;
|
||||
|
||||
*ber = zl10353_read_register(state, 0x11) << 16 |
|
||||
zl10353_read_register(state, 0x12) << 8 |
|
||||
zl10353_read_register(state, 0x13);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int zl10353_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
|
||||
{
|
||||
struct zl10353_state *state = fe->demodulator_priv;
|
||||
|
||||
u16 signal = zl10353_read_register(state, 0x0a) << 10 |
|
||||
zl10353_read_register(state, 0x0b) << 2 | 3;
|
||||
|
||||
*strength = ~signal;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int zl10353_read_snr(struct dvb_frontend *fe, u16 *snr)
|
||||
{
|
||||
struct zl10353_state *state = fe->demodulator_priv;
|
||||
|
@ -227,6 +250,16 @@ static int zl10353_read_snr(struct dvb_frontend *fe, u16 *snr)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int zl10353_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
|
||||
{
|
||||
struct zl10353_state *state = fe->demodulator_priv;
|
||||
|
||||
*ucblocks = zl10353_read_register(state, 0x14) << 8 |
|
||||
zl10353_read_register(state, 0x15);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int zl10353_get_tune_settings(struct dvb_frontend *fe,
|
||||
struct dvb_frontend_tune_settings
|
||||
*fe_tune_settings)
|
||||
|
@ -325,7 +358,10 @@ static struct dvb_frontend_ops zl10353_ops = {
|
|||
.get_tune_settings = zl10353_get_tune_settings,
|
||||
|
||||
.read_status = zl10353_read_status,
|
||||
.read_ber = zl10353_read_ber,
|
||||
.read_signal_strength = zl10353_read_signal_strength,
|
||||
.read_snr = zl10353_read_snr,
|
||||
.read_ucblocks = zl10353_read_ucblocks,
|
||||
};
|
||||
|
||||
module_param(debug_regs, int, 0644);
|
||||
|
|
Loading…
Reference in a new issue