V4L/DVB (3845): DVB core changes for PLL refactoring

Add tuner_ops structure.
Add calls into dvb_frontend to support the new tuner architecture.

Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

2 files changed, 127 insertions, 0 deletions

diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c
index 889d4a817c88..bbf441215e79 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -215,6 +215,11 @@ static void dvb_frontend_init(struct dvb_frontend *fe)
 
         if (fe->ops->init)
                 fe->ops->init(fe);
+        if (fe->ops->tuner_ops.init) {
+                fe->ops->tuner_ops.init(fe);
+                if (fe->ops->i2c_gate_ctrl)
+                        fe->ops->i2c_gate_ctrl(fe, 0);
+        }
 }
 
 void dvb_frontend_reinitialise(struct dvb_frontend *fe)
@@ -571,6 +576,11 @@ static int dvb_frontend_thread(void *data)
                 if (dvb_powerdown_on_sleep)
                         if (fe->ops->set_voltage)
                                 fe->ops->set_voltage(fe, SEC_VOLTAGE_OFF);
+                if (fe->ops->tuner_ops.sleep) {
+                        fe->ops->tuner_ops.sleep(fe);
+                        if (fe->ops->i2c_gate_ctrl)
+                                fe->ops->i2c_gate_ctrl(fe, 0);
+                }
                 if (fe->ops->sleep)
                         fe->ops->sleep(fe);
         }
@@ -1085,6 +1095,11 @@ int dvb_unregister_frontend(struct dvb_frontend* fe)
         mutex_lock(&frontend_mutex);
         dvb_unregister_device (fepriv->dvbdev);
         dvb_frontend_stop (fe);
+        if (fe->ops->tuner_ops.release) {
+                fe->ops->tuner_ops.release(fe);
+                if (fe->ops->i2c_gate_ctrl)
+                        fe->ops->i2c_gate_ctrl(fe, 0);
+        }
         if (fe->ops->release)
                 fe->ops->release(fe);
         else
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.h b/drivers/media/dvb/dvb-core/dvb_frontend.h
index 5926a3b745c9..e0148a9e6633 100644
--- a/drivers/media/dvb/dvb-core/dvb_frontend.h
+++ b/drivers/media/dvb/dvb-core/dvb_frontend.h
@@ -49,6 +49,115 @@ struct dvb_frontend_tune_settings {
 
 struct dvb_frontend;
 
+struct dvb_tuner_info {
+        char name[128];
+
+        u32 frequency_min;
+        u32 frequency_max;
+        u32 frequency_step;
+
+        u32 bandwidth_min;
+        u32 bandwidth_max;
+        u32 bandwidth_step;
+};
+
+struct dvb_tuner_ops {
+        /**
+         * Description of the tuner.
+         */
+        struct dvb_tuner_info info;
+
+        /**
+         * Cleanup an attached tuner.
+         *
+         * @param fe dvb_frontend structure to clean it up from.
+         * @return 0 on success, <0 on failure.
+         */
+        int (*release)(struct dvb_frontend *fe);
+
+        /**
+         * Initialise a tuner.
+         *
+         * @param fe dvb_frontend structure.
+         * @return 0 on success, <0 on failure.
+         */
+        int (*init)(struct dvb_frontend *fe);
+
+        /**
+         * Set a tuner into low power mode.
+         *
+         * @param fe dvb_frontend structure.
+         * @return 0 on success, <0 on failure.
+         */
+        int (*sleep)(struct dvb_frontend *fe);
+
+        /**
+         * This is for simple PLLs - set all parameters in one go.
+         *
+         * @param fe The dvb_frontend structure.
+         * @param p The parameters to set.
+         * @return 0 on success, <0 on failure.
+         */
+        int (*set_params)(struct dvb_frontend *fe, struct dvb_frontend_parameters *p);
+
+        /**
+         * This is support for demods like the mt352 - fills out the supplied buffer with what to write.
+         *
+         * @param fe The dvb_frontend structure.
+         * @param p The parameters to set.
+         * @param buf The buffer to fill with data. For an i2c tuner, the first byte should be the tuner i2c address in linux format.
+         * @param buf_len Size of buffer in bytes.
+         * @return Number of bytes used, or <0 on failure.
+         */
+        int (*pllbuf)(struct dvb_frontend *fe, struct dvb_frontend_parameters *p, u8 *buf, int buf_len);
+
+        /**
+         * Get the frequency the tuner was actually set to.
+         *
+         * @param fe The dvb_frontend structure.
+         * @param frequency Where to put it.
+         * @return 0 on success, or <0 on failure.
+         */
+        int (*get_frequency)(struct dvb_frontend *fe, u32 *frequency);
+
+        /**
+         * Get the bandwidth the tuner was actually set to.
+         *
+         * @param fe The dvb_frontend structure.
+         * @param bandwidth Where to put it.
+         * @return 0 on success, or <0 on failure.
+         */
+        int (*get_bandwidth)(struct dvb_frontend *fe, u32 *bandwidth);
+
+        /**
+         * Get the tuner's status.
+         *
+         * @param fe The dvb_frontend structure.
+         * @param status Where to put it.
+         * @return 0 on success, or <0 on failure.
+         */
+#define TUNER_STATUS_LOCKED 1
+        int (*get_status)(struct dvb_frontend *fe, u32 *status);
+
+        /**
+         * Set the frequency of the tuner - for complex tuners.
+         *
+         * @param fe The dvb_frontend structure.
+         * @param frequency What to set.
+         * @return 0 on success, or <0 on failure.
+         */
+        int (*set_frequency)(struct dvb_frontend *fe, u32 frequency);
+
+        /**
+         * Set the bandwidth of the tuner - for complex tuners.
+         *
+         * @param fe The dvb_frontend structure.
+         * @param bandwidth  What to set.
+         * @return 0 on success, or <0 on failure.
+         */
+        int (*set_bandwidth)(struct dvb_frontend *fe, u32 bandwidth);
+};
+
 struct dvb_frontend_ops {
 
         struct dvb_frontend_info info;
@@ -86,6 +195,8 @@ struct dvb_frontend_ops {
         int (*enable_high_lnb_voltage)(struct dvb_frontend* fe, long arg);
         int (*dishnetwork_send_legacy_command)(struct dvb_frontend* fe, unsigned long cmd);
         int (*i2c_gate_ctrl)(struct dvb_frontend* fe, int enable);
+
+        struct dvb_tuner_ops tuner_ops;
 };
 
 #define MAX_EVENT 8
@@ -103,6 +214,7 @@ struct dvb_frontend {
         struct dvb_frontend_ops* ops;
         struct dvb_adapter *dvb;
         void* demodulator_priv;
+        void* tuner_priv;
         void* frontend_priv;
         void* misc_priv;
 };