aboutsummaryrefslogtreecommitdiff
path: root/drivers/media
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/dvb/dvb-core/dvb_frontend.c66
-rw-r--r--drivers/media/dvb/dvb-core/dvb_frontend.h134
2 files changed, 192 insertions, 8 deletions
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
index 7a421e9dba5..d006f042f22 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -128,6 +128,7 @@ struct dvb_frontend_private {
unsigned int step_size;
int quality;
unsigned int check_wrapped;
+ enum dvbfe_search algo_status;
};
static void dvb_frontend_wakeup(struct dvb_frontend *fe);
@@ -516,6 +517,8 @@ static int dvb_frontend_thread(void *data)
struct dvb_frontend_private *fepriv = fe->frontend_priv;
unsigned long timeout;
fe_status_t s;
+ enum dvbfe_algo algo;
+
struct dvb_frontend_parameters *params;
dprintk("%s\n", __func__);
@@ -562,23 +565,72 @@ restart:
/* do an iteration of the tuning loop */
if (fe->ops.get_frontend_algo) {
- if (fe->ops.get_frontend_algo(fe) == FE_ALGO_HW) {
- /* have we been asked to retune? */
- params = NULL;
+ algo = fe->ops.get_frontend_algo(fe);
+ switch (algo) {
+ case DVBFE_ALGO_HW:
+ dprintk("%s: Frontend ALGO = DVBFE_ALGO_HW\n", __func__);
+ params = NULL; /* have we been asked to RETUNE ? */
+
if (fepriv->state & FESTATE_RETUNE) {
- params = &fepriv->parameters;
+ dprintk("%s: Retune requested, FESTATE_RETUNE\n", __func__);
fepriv->state = FESTATE_TUNED;
}
- fe->ops.tune(fe, params, fepriv->tune_mode_flags, &fepriv->delay, &s);
+ if (fe->ops.tune)
+ fe->ops.tune(fe, params, fepriv->tune_mode_flags, &fepriv->delay, &s);
+
if (s != fepriv->status) {
+ dprintk("%s: state changed, adding current state\n", __func__);
dvb_frontend_add_event(fe, s);
fepriv->status = s;
}
- } else
+ break;
+ case DVBFE_ALGO_SW:
+ dprintk("%s: Frontend ALGO = DVBFE_ALGO_SW\n", __func__);
dvb_frontend_swzigzag(fe);
- } else
+ break;
+ case DVBFE_ALGO_CUSTOM:
+ params = NULL; /* have we been asked to RETUNE ? */
+ dprintk("%s: Frontend ALGO = DVBFE_ALGO_CUSTOM, state=%d\n", __func__, fepriv->state);
+ if (fepriv->state & FESTATE_RETUNE) {
+ dprintk("%s: Retune requested, FESTAT_RETUNE\n", __func__);
+ fepriv->state = FESTATE_TUNED;
+ }
+ /* Case where we are going to search for a carrier
+ * User asked us to retune again for some reason, possibly
+ * requesting a search with a new set of parameters
+ */
+ if (fepriv->algo_status & DVBFE_ALGO_SEARCH_AGAIN) {
+ if (fe->ops.search)
+ fepriv->algo_status = fe->ops.search(fe, &fepriv->parameters);
+ /* We did do a search as was requested, the flags are
+ * now unset as well and has the flags wrt to search.
+ */
+
+ fepriv->algo_status &= ~DVBFE_ALGO_SEARCH_AGAIN;
+ }
+ /* Track the carrier if the search was successful */
+ if (fepriv->algo_status == DVBFE_ALGO_SEARCH_SUCCESS) {
+ if (fepriv->algo_status & DVBFE_ALGO_SEARCH_SUCCESS)
+ dprintk("%s: status = DVBFE_ALGO_SEARCH_SUCCESS\n", __func__);
+ if (fepriv->algo_status & DVBFE_ALGO_SEARCH_FAILED)
+ fepriv->algo_status |= DVBFE_ALGO_SEARCH_AGAIN;
+
+ fe->ops.read_status(fe, &s);
+ dvb_frontend_add_event(fe, s); /* update event list */
+ fepriv->status = s;
+ if (fe->ops.track)
+ fe->ops.track(fe, &fepriv->parameters);
+
+ }
+ break;
+ default:
+ dprintk("%s: UNDEFINED ALGO !\n", __func__);
+ break;
+ }
+ } else {
dvb_frontend_swzigzag(fe);
+ }
}
if (dvb_powerdown_on_sleep) {
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.h b/drivers/media/dvb/dvb-core/dvb_frontend.h
index db4a63b0a32..e176da472d7 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.h
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.h
@@ -69,6 +69,125 @@ struct analog_parameters {
u64 std;
};
+enum dvbfe_modcod {
+ DVBFE_MODCOD_DUMMY_PLFRAME = 0,
+ DVBFE_MODCOD_QPSK_1_4,
+ DVBFE_MODCOD_QPSK_1_3,
+ DVBFE_MODCOD_QPSK_2_5,
+ DVBFE_MODCOD_QPSK_1_2,
+ DVBFE_MODCOD_QPSK_3_5,
+ DVBFE_MODCOD_QPSK_2_3,
+ DVBFE_MODCOD_QPSK_3_4,
+ DVBFE_MODCOD_QPSK_4_5,
+ DVBFE_MODCOD_QPSK_5_6,
+ DVBFE_MODCOD_QPSK_8_9,
+ DVBFE_MODCOD_QPSK_9_10,
+ DVBFE_MODCOD_8PSK_3_5,
+ DVBFE_MODCOD_8PSK_2_3,
+ DVBFE_MODCOD_8PSK_3_4,
+ DVBFE_MODCOD_8PSK_5_6,
+ DVBFE_MODCOD_8PSK_8_9,
+ DVBFE_MODCOD_8PSK_9_10,
+ DVBFE_MODCOD_16APSK_2_3,
+ DVBFE_MODCOD_16APSK_3_4,
+ DVBFE_MODCOD_16APSK_4_5,
+ DVBFE_MODCOD_16APSK_5_6,
+ DVBFE_MODCOD_16APSK_8_9,
+ DVBFE_MODCOD_16APSK_9_10,
+ DVBFE_MODCOD_32APSK_3_4,
+ DVBFE_MODCOD_32APSK_4_5,
+ DVBFE_MODCOD_32APSK_5_6,
+ DVBFE_MODCOD_32APSK_8_9,
+ DVBFE_MODCOD_32APSK_9_10,
+ DVBFE_MODCOD_RESERVED_1,
+ DVBFE_MODCOD_BPSK_1_3,
+ DVBFE_MODCOD_BPSK_1_4,
+ DVBFE_MODCOD_RESERVED_2
+};
+
+enum tuner_param {
+ DVBFE_TUNER_FREQUENCY = (1 << 0),
+ DVBFE_TUNER_TUNERSTEP = (1 << 1),
+ DVBFE_TUNER_IFFREQ = (1 << 2),
+ DVBFE_TUNER_BANDWIDTH = (1 << 3),
+ DVBFE_TUNER_REFCLOCK = (1 << 4),
+ DVBFE_TUNER_IQSENSE = (1 << 5),
+ DVBFE_TUNER_DUMMY = (1 << 31)
+};
+
+/*
+ * ALGO_HW: (Hardware Algorithm)
+ * ----------------------------------------------------------------
+ * Devices that support this algorithm do everything in hardware
+ * and no software support is needed to handle them.
+ * Requesting these devices to LOCK is the only thing required,
+ * device is supposed to do everything in the hardware.
+ *
+ * ALGO_SW: (Software Algorithm)
+ * ----------------------------------------------------------------
+ * These are dumb devices, that require software to do everything
+ *
+ * ALGO_CUSTOM: (Customizable Agorithm)
+ * ----------------------------------------------------------------
+ * Devices having this algorithm can be customized to have specific
+ * algorithms in the frontend driver, rather than simply doing a
+ * software zig-zag. In this case the zigzag maybe hardware assisted
+ * or it maybe completely done in hardware. In all cases, usage of
+ * this algorithm, in conjunction with the search and track
+ * callbacks, utilizes the driver specific algorithm.
+ *
+ * ALGO_RECOVERY: (Recovery Algorithm)
+ * ----------------------------------------------------------------
+ * These devices have AUTO recovery capabilities from LOCK failure
+ */
+enum dvbfe_algo {
+ DVBFE_ALGO_HW = (1 << 0),
+ DVBFE_ALGO_SW = (1 << 1),
+ DVBFE_ALGO_CUSTOM = (1 << 2),
+ DVBFE_ALGO_RECOVERY = (1 << 31)
+};
+
+struct tuner_state {
+ u32 frequency;
+ u32 tunerstep;
+ u32 ifreq;
+ u32 bandwidth;
+ u32 iqsense;
+ u32 refclock;
+};
+
+/*
+ * search callback possible return status
+ *
+ * DVBFE_ALGO_SEARCH_SUCCESS
+ * The frontend search algorithm completed and returned succesfully
+ *
+ * DVBFE_ALGO_SEARCH_ASLEEP
+ * The frontend search algorithm is sleeping
+ *
+ * DVBFE_ALGO_SEARCH_FAILED
+ * The frontend search for a signal failed
+ *
+ * DVBFE_ALGO_SEARCH_INVALID
+ * The frontend search algorith was probably supplied with invalid
+ * parameters and the search is an invalid one
+ *
+ * DVBFE_ALGO_SEARCH_ERROR
+ * The frontend search algorithm failed due to some error
+ *
+ * DVBFE_ALGO_SEARCH_AGAIN
+ * The frontend search algorithm was requested to search again
+ */
+enum dvbfe_search {
+ DVBFE_ALGO_SEARCH_SUCCESS = (1 << 0),
+ DVBFE_ALGO_SEARCH_ASLEEP = (1 << 1),
+ DVBFE_ALGO_SEARCH_FAILED = (1 << 2),
+ DVBFE_ALGO_SEARCH_INVALID = (1 << 3),
+ DVBFE_ALGO_SEARCH_AGAIN = (1 << 4),
+ DVBFE_ALGO_SEARCH_ERROR = (1 << 31),
+};
+
+
struct dvb_tuner_ops {
struct dvb_tuner_info info;
@@ -99,6 +218,13 @@ struct dvb_tuner_ops {
* tuners which require sophisticated tuning loops, controlling each parameter seperately. */
int (*set_frequency)(struct dvb_frontend *fe, u32 frequency);
int (*set_bandwidth)(struct dvb_frontend *fe, u32 bandwidth);
+
+ /*
+ * These are provided seperately from set_params in order to facilitate silicon
+ * tuners which require sophisticated tuning loops, controlling each parameter seperately.
+ */
+ int (*set_state)(struct dvb_frontend *fe, enum tuner_param param, struct tuner_state *state);
+ int (*get_state)(struct dvb_frontend *fe, enum tuner_param param, struct tuner_state *state);
};
struct analog_demod_info {
@@ -142,7 +268,7 @@ struct dvb_frontend_ops {
unsigned int *delay,
fe_status_t *status);
/* get frontend tuning algorithm from the module */
- int (*get_frontend_algo)(struct dvb_frontend *fe);
+ enum dvbfe_algo (*get_frontend_algo)(struct dvb_frontend *fe);
/* these two are only used for the swzigzag code */
int (*set_frontend)(struct dvb_frontend* fe, struct dvb_frontend_parameters* params);
@@ -167,6 +293,12 @@ struct dvb_frontend_ops {
int (*i2c_gate_ctrl)(struct dvb_frontend* fe, int enable);
int (*ts_bus_ctrl)(struct dvb_frontend* fe, int acquire);
+ /* These callbacks are for devices that implement their own
+ * tuning algorithms, rather than a simple swzigzag
+ */
+ enum dvbfe_search (*search)(struct dvb_frontend *fe, struct dvb_frontend_parameters *p);
+ int (*track)(struct dvb_frontend *fe, struct dvb_frontend_parameters *p);
+
struct dvb_tuner_ops tuner_ops;
struct analog_demod_ops analog_ops;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-17 09:47:27 +0000