2 files changed, 46 insertions, 7 deletions

diff --git a/drivers/media/dvb/frontends/au8522_dig.c b/drivers/media/dvb/frontends/au8522_dig.c
index fa3ecbed1e58..b04346687c68 100644
--- a/drivers/media/dvb/frontends/au8522_dig.c
+++ b/drivers/media/dvb/frontends/au8522_dig.c
@@ -31,6 +31,10 @@
 
 static int debug;
 
+/* Despite the name "hybrid_tuner", the framework works just as well for
+   hybrid demodulators as well... */
+static LIST_HEAD(hybrid_tuner_instance_list);
+
 #define dprintk(arg...) do {            \
         if (debug)                      \
                  printk(arg);           \
@@ -786,23 +790,50 @@ static int au8522_get_tune_settings(struct dvb_frontend *fe,
         return 0;
 }
 
+static struct dvb_frontend_ops au8522_ops;
+
+int au8522_get_state(struct au8522_state **state, struct i2c_adapter *i2c,
+                     u8 client_address)
+{
+        return hybrid_tuner_request_state(struct au8522_state, (*state),
+                                          hybrid_tuner_instance_list,
+                                          i2c, client_address, "au8522");
+}
+
+void au8522_release_state(struct au8522_state *state)
+{
+        if (state != NULL)
+                hybrid_tuner_release_state(state);
+}
+
+
 static void au8522_release(struct dvb_frontend *fe)
 {
         struct au8522_state *state = fe->demodulator_priv;
-        kfree(state);
+        au8522_release_state(state);
 }
 
-static struct dvb_frontend_ops au8522_ops;
-
 struct dvb_frontend *au8522_attach(const struct au8522_config *config,
                                    struct i2c_adapter *i2c)
 {
         struct au8522_state *state = NULL;
+        int instance;
 
         /* allocate memory for the internal state */
-        state = kmalloc(sizeof(struct au8522_state), GFP_KERNEL);
-        if (state == NULL)
-                goto error;
+        instance = au8522_get_state(&state, i2c, config->demod_address);
+        switch (instance) {
+        case 0:
+                dprintk("%s state allocation failed\n", __func__);
+                break;
+        case 1:
+                /* new demod instance */
+                dprintk("%s using new instance\n", __func__);
+                break;
+        default:
+                /* existing demod instance */
+                dprintk("%s using existing instance\n", __func__);
+                break;
+        }
 
         /* setup the state */
         state->config = config;
@@ -824,7 +855,7 @@ struct dvb_frontend *au8522_attach(const struct au8522_config *config,
         return &state->frontend;
 
 error:
-        kfree(state);
+        au8522_release_state(state);
         return NULL;
 }
 EXPORT_SYMBOL(au8522_attach);
diff --git a/drivers/media/dvb/frontends/au8522_priv.h b/drivers/media/dvb/frontends/au8522_priv.h
index 569675d295d5..98b09caa2123 100644
--- a/drivers/media/dvb/frontends/au8522_priv.h
+++ b/drivers/media/dvb/frontends/au8522_priv.h
@@ -37,6 +37,10 @@
 struct au8522_state {
         struct i2c_adapter *i2c;
 
+        /* Used for sharing of the state between analog and digital mode */
+        struct tuner_i2c_props i2c_props;
+        struct list_head hybrid_tuner_instance_list;
+
         /* configuration settings */
         const struct au8522_config *config;
 
@@ -55,3 +59,7 @@ int au8522_writereg(struct au8522_state *state, u16 reg, u8 data);
 u8 au8522_readreg(struct au8522_state *state, u16 reg);
 int au8522_init(struct dvb_frontend *fe);
 int au8522_sleep(struct dvb_frontend *fe);
+
+int au8522_get_state(struct au8522_state **state, struct i2c_adapter *i2c,
+                     u8 client_address);
+void au8522_release_state(struct au8522_state *state);