struct i2c_adapter* i2c;
- struct dvb_frontend_ops ops;
-
const struct cx22700_config* config;
struct dvb_frontend frontend;
return -EINVAL;
if (p->code_rate_LP < FEC_1_2 || p->code_rate_LP > FEC_7_8)
+ return -EINVAL;
if (p->code_rate_HP == FEC_4_5 || p->code_rate_LP == FEC_4_5)
return -EINVAL;
return 0;
}
-
-
-
-
-
-
-
-
-
-
static int cx22700_init (struct dvb_frontend* fe)
-{ struct cx22700_state* state = (struct cx22700_state*) fe->demodulator_priv;
+{ struct cx22700_state* state = fe->demodulator_priv;
int i;
dprintk("cx22700_init: init chip\n");
cx22700_writereg (state, 0x00, 0x01);
- if (state->config->pll_init) {
- cx22700_writereg (state, 0x0a, 0x00); /* open i2c bus switch */
- state->config->pll_init(fe);
- cx22700_writereg (state, 0x0a, 0x01); /* close i2c bus switch */
- }
-
return 0;
}
static int cx22700_read_status(struct dvb_frontend* fe, fe_status_t* status)
{
- struct cx22700_state* state = (struct cx22700_state*) fe->demodulator_priv;
+ struct cx22700_state* state = fe->demodulator_priv;
u16 rs_ber = (cx22700_readreg (state, 0x0d) << 9)
| (cx22700_readreg (state, 0x0e) << 1);
static int cx22700_read_ber(struct dvb_frontend* fe, u32* ber)
{
- struct cx22700_state* state = (struct cx22700_state*) fe->demodulator_priv;
+ struct cx22700_state* state = fe->demodulator_priv;
*ber = cx22700_readreg (state, 0x0c) & 0x7f;
cx22700_writereg (state, 0x0c, 0x00);
static int cx22700_read_signal_strength(struct dvb_frontend* fe, u16* signal_strength)
{
- struct cx22700_state* state = (struct cx22700_state*) fe->demodulator_priv;
+ struct cx22700_state* state = fe->demodulator_priv;
u16 rs_ber = (cx22700_readreg (state, 0x0d) << 9)
| (cx22700_readreg (state, 0x0e) << 1);
static int cx22700_read_snr(struct dvb_frontend* fe, u16* snr)
{
- struct cx22700_state* state = (struct cx22700_state*) fe->demodulator_priv;
+ struct cx22700_state* state = fe->demodulator_priv;
u16 rs_ber = (cx22700_readreg (state, 0x0d) << 9)
| (cx22700_readreg (state, 0x0e) << 1);
static int cx22700_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
{
- struct cx22700_state* state = (struct cx22700_state*) fe->demodulator_priv;
+ struct cx22700_state* state = fe->demodulator_priv;
*ucblocks = cx22700_readreg (state, 0x0f);
cx22700_writereg (state, 0x0f, 0x00);
static int cx22700_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
{
- struct cx22700_state* state = (struct cx22700_state*) fe->demodulator_priv;
+ struct cx22700_state* state = fe->demodulator_priv;
cx22700_writereg (state, 0x00, 0x02); /* XXX CHECKME: soft reset*/
cx22700_writereg (state, 0x00, 0x00);
- cx22700_writereg (state, 0x0a, 0x00); /* open i2c bus switch */
- state->config->pll_set(fe, p);
- cx22700_writereg (state, 0x0a, 0x01); /* close i2c bus switch */
+ if (fe->ops.tuner_ops.set_params) {
+ fe->ops.tuner_ops.set_params(fe, p);
+ if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
+ }
+
cx22700_set_inversion (state, p->inversion);
cx22700_set_tps (state, &p->u.ofdm);
cx22700_writereg (state, 0x37, 0x01); /* PAL loop filter off */
static int cx22700_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
{
- struct cx22700_state* state = (struct cx22700_state*) fe->demodulator_priv;
+ struct cx22700_state* state = fe->demodulator_priv;
u8 reg09 = cx22700_readreg (state, 0x09);
p->inversion = reg09 & 0x1 ? INVERSION_ON : INVERSION_OFF;
return cx22700_get_tps (state, &p->u.ofdm);
}
+static int cx22700_i2c_gate_ctrl(struct dvb_frontend* fe, int enable)
+{
+ struct cx22700_state* state = fe->demodulator_priv;
+
+ if (enable) {
+ return cx22700_writereg(state, 0x0a, 0x00);
+ } else {
+ return cx22700_writereg(state, 0x0a, 0x01);
+ }
+}
+
static int cx22700_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings)
{
- fesettings->min_delay_ms = 150;
- fesettings->step_size = 166667;
- fesettings->max_drift = 166667*2;
- return 0;
+ fesettings->min_delay_ms = 150;
+ fesettings->step_size = 166667;
+ fesettings->max_drift = 166667*2;
+ return 0;
}
static void cx22700_release(struct dvb_frontend* fe)
{
- struct cx22700_state* state = (struct cx22700_state*) fe->demodulator_priv;
+ struct cx22700_state* state = fe->demodulator_priv;
kfree(state);
}
struct cx22700_state* state = NULL;
/* allocate memory for the internal state */
- state = (struct cx22700_state*) kmalloc(sizeof(struct cx22700_state), GFP_KERNEL);
+ state = kmalloc(sizeof(struct cx22700_state), GFP_KERNEL);
if (state == NULL) goto error;
/* setup the state */
state->config = config;
state->i2c = i2c;
- memcpy(&state->ops, &cx22700_ops, sizeof(struct dvb_frontend_ops));
/* check if the demod is there */
if (cx22700_readreg(state, 0x07) < 0) goto error;
/* create dvb_frontend */
- state->frontend.ops = &state->ops;
+ memcpy(&state->frontend.ops, &cx22700_ops, sizeof(struct dvb_frontend_ops));
state->frontend.demodulator_priv = state;
return &state->frontend;
error:
- if (state) kfree(state);
+ kfree(state);
return NULL;
}
static struct dvb_frontend_ops cx22700_ops = {
.info = {
- .name = "Conexant CX22700 DVB-T",
- .type = FE_OFDM,
- .frequency_min = 470000000,
- .frequency_max = 860000000,
- .frequency_stepsize = 166667,
+ .name = "Conexant CX22700 DVB-T",
+ .type = FE_OFDM,
+ .frequency_min = 470000000,
+ .frequency_max = 860000000,
+ .frequency_stepsize = 166667,
.caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 |
- FE_CAN_RECOVER
+ FE_CAN_RECOVER
},
.release = cx22700_release,
.init = cx22700_init,
+ .i2c_gate_ctrl = cx22700_i2c_gate_ctrl,
.set_frontend = cx22700_set_frontend,
.get_frontend = cx22700_get_frontend,