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[media] tda8261: don't use set_state/get_state callbacks
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Those callbacks are meant to be used only on some very specific
cases. There's absolutely no need to do that at tda8261, as
the only parameter that it allows to be set/get is the frequency.

So, use the standard get_params() and get_frequency() kABI
ops.

There's no need to touch at any bridge driver, as all interactions
are done via the macros at tda8261_cfg.h.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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Mauro Carvalho Chehab committed Nov 17, 2015
1 parent 8fdc25b commit e417668
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Showing 2 changed files with 63 additions and 99 deletions.
125 changes: 52 additions & 73 deletions drivers/media/dvb-frontends/tda8261.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -83,88 +83,71 @@ static int tda8261_get_status(struct dvb_frontend *fe, u32 *status)
static const u32 div_tab[] = { 2000, 1000, 500, 250, 125 }; /* kHz */
static const u8 ref_div[] = { 0x00, 0x01, 0x02, 0x05, 0x07 };

static int tda8261_get_state(struct dvb_frontend *fe,
enum tuner_param param,
struct tuner_state *tstate)
static int tda8261_get_frequency(struct dvb_frontend *fe, u32 *frequency)
{
struct tda8261_state *state = fe->tuner_priv;
int err = 0;

switch (param) {
case DVBFE_TUNER_FREQUENCY:
tstate->frequency = state->frequency;
break;
case DVBFE_TUNER_BANDWIDTH:
tstate->bandwidth = 40000000; /* FIXME! need to calculate Bandwidth */
break;
default:
pr_err("%s: Unknown parameter (param=%d)\n", __func__, param);
err = -EINVAL;
break;
}
*frequency = state->frequency;

return err;
return 0;
}

static int tda8261_set_state(struct dvb_frontend *fe,
enum tuner_param param,
struct tuner_state *tstate)
static int tda8261_set_params(struct dvb_frontend *fe)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct tda8261_state *state = fe->tuner_priv;
const struct tda8261_config *config = state->config;
u32 frequency, N, status = 0;
u8 buf[4];
int err = 0;

if (param & DVBFE_TUNER_FREQUENCY) {
/**
* N = Max VCO Frequency / Channel Spacing
* Max VCO Frequency = VCO frequency + (channel spacing - 1)
* (to account for half channel spacing on either side)
*/
frequency = tstate->frequency;
if ((frequency < 950000) || (frequency > 2150000)) {
pr_warn("%s: Frequency beyond limits, frequency=%d\n", __func__, frequency);
return -EINVAL;
}
N = (frequency + (div_tab[config->step_size] - 1)) / div_tab[config->step_size];
pr_debug("%s: Step size=%d, Divider=%d, PG=0x%02x (%d)\n",
__func__, config->step_size, div_tab[config->step_size], N, N);

buf[0] = (N >> 8) & 0xff;
buf[1] = N & 0xff;
buf[2] = (0x01 << 7) | ((ref_div[config->step_size] & 0x07) << 1);

if (frequency < 1450000)
buf[3] = 0x00;
else if (frequency < 2000000)
buf[3] = 0x40;
else if (frequency < 2150000)
buf[3] = 0x80;

/* Set params */
if ((err = tda8261_write(state, buf)) < 0) {
pr_err("%s: I/O Error\n", __func__);
return err;
}
/* sleep for some time */
pr_debug("%s: Waiting to Phase LOCK\n", __func__);
msleep(20);
/* check status */
if ((err = tda8261_get_status(fe, &status)) < 0) {
pr_err("%s: I/O Error\n", __func__);
return err;
}
if (status == 1) {
pr_debug("%s: Tuner Phase locked: status=%d\n", __func__, status);
state->frequency = frequency; /* cache successful state */
} else {
pr_debug("%s: No Phase lock: status=%d\n", __func__, status);
}
} else {
pr_err("%s: Unknown parameter (param=%d)\n", __func__, param);
/*
* N = Max VCO Frequency / Channel Spacing
* Max VCO Frequency = VCO frequency + (channel spacing - 1)
* (to account for half channel spacing on either side)
*/
frequency = c->frequency;
if ((frequency < 950000) || (frequency > 2150000)) {
pr_warn("%s: Frequency beyond limits, frequency=%d\n",
__func__, frequency);
return -EINVAL;
}
N = (frequency + (div_tab[config->step_size] - 1)) / div_tab[config->step_size];
pr_debug("%s: Step size=%d, Divider=%d, PG=0x%02x (%d)\n",
__func__, config->step_size, div_tab[config->step_size], N, N);

buf[0] = (N >> 8) & 0xff;
buf[1] = N & 0xff;
buf[2] = (0x01 << 7) | ((ref_div[config->step_size] & 0x07) << 1);

if (frequency < 1450000)
buf[3] = 0x00;
else if (frequency < 2000000)
buf[3] = 0x40;
else if (frequency < 2150000)
buf[3] = 0x80;

/* Set params */
err = tda8261_write(state, buf);
if (err < 0) {
pr_err("%s: I/O Error\n", __func__);
return err;
}
/* sleep for some time */
pr_debug("%s: Waiting to Phase LOCK\n", __func__);
msleep(20);
/* check status */
if ((err = tda8261_get_status(fe, &status)) < 0) {
pr_err("%s: I/O Error\n", __func__);
return err;
}
if (status == 1) {
pr_debug("%s: Tuner Phase locked: status=%d\n", __func__,
status);
state->frequency = frequency; /* cache successful state */
} else {
pr_debug("%s: No Phase lock: status=%d\n", __func__, status);
}

return 0;
}
Expand All @@ -182,14 +165,13 @@ static struct dvb_tuner_ops tda8261_ops = {

.info = {
.name = "TDA8261",
// .tuner_name = NULL,
.frequency_min = 950000,
.frequency_max = 2150000,
.frequency_step = 0
},

.set_state = tda8261_set_state,
.get_state = tda8261_get_state,
.set_params = tda8261_set_params,
.get_frequency = tda8261_get_frequency,
.get_status = tda8261_get_status,
.release = tda8261_release
};
Expand All @@ -210,10 +192,7 @@ struct dvb_frontend *tda8261_attach(struct dvb_frontend *fe,
fe->ops.tuner_ops = tda8261_ops;

fe->ops.tuner_ops.info.frequency_step = div_tab[config->step_size];
// fe->ops.tuner_ops.tuner_name = &config->buf;

// printk("%s: Attaching %s TDA8261 8PSK/QPSK tuner\n",
// __func__, fe->ops.tuner_ops.tuner_name);
pr_info("%s: Attaching TDA8261 8PSK/QPSK tuner\n", __func__);

return fe;
Expand Down
37 changes: 11 additions & 26 deletions drivers/media/dvb-frontends/tda8261_cfg.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -21,17 +21,15 @@ static int tda8261_get_frequency(struct dvb_frontend *fe, u32 *frequency)
{
struct dvb_frontend_ops *frontend_ops = &fe->ops;
struct dvb_tuner_ops *tuner_ops = &frontend_ops->tuner_ops;
struct tuner_state t_state;
int err = 0;

if (tuner_ops->get_state) {
err = tuner_ops->get_state(fe, DVBFE_TUNER_FREQUENCY, &t_state);
if (tuner_ops->get_frequency) {
err = tuner_ops->get_frequency(fe, frequency);
if (err < 0) {
printk("%s: Invalid parameter\n", __func__);
pr_err("%s: Invalid parameter\n", __func__);
return err;
}
*frequency = t_state.frequency;
printk("%s: Frequency=%d\n", __func__, t_state.frequency);
pr_debug("%s: Frequency=%d\n", __func__, *frequency);
}
return 0;
}
Expand All @@ -40,37 +38,24 @@ static int tda8261_set_frequency(struct dvb_frontend *fe, u32 frequency)
{
struct dvb_frontend_ops *frontend_ops = &fe->ops;
struct dvb_tuner_ops *tuner_ops = &frontend_ops->tuner_ops;
struct tuner_state t_state;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int err = 0;

t_state.frequency = frequency;

if (tuner_ops->set_state) {
err = tuner_ops->set_state(fe, DVBFE_TUNER_FREQUENCY, &t_state);
if (tuner_ops->set_params) {
err = tuner_ops->set_params(fe);
if (err < 0) {
printk("%s: Invalid parameter\n", __func__);
pr_err("%s: Invalid parameter\n", __func__);
return err;
}
}
printk("%s: Frequency=%d\n", __func__, t_state.frequency);
pr_debug("%s: Frequency=%d\n", __func__, c->frequency);
return 0;
}

static int tda8261_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
{
struct dvb_frontend_ops *frontend_ops = &fe->ops;
struct dvb_tuner_ops *tuner_ops = &frontend_ops->tuner_ops;
struct tuner_state t_state;
int err = 0;
/* FIXME! need to calculate Bandwidth */
*bandwidth = 40000000;

if (tuner_ops->get_state) {
err = tuner_ops->get_state(fe, DVBFE_TUNER_BANDWIDTH, &t_state);
if (err < 0) {
printk("%s: Invalid parameter\n", __func__);
return err;
}
*bandwidth = t_state.bandwidth;
printk("%s: Bandwidth=%d\n", __func__, t_state.bandwidth);
}
return 0;
}

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