V4L/DVB (9049): convert tuner drivers to use dvb_frontend->callback

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 21 insertions, 20 deletions

diff --git a/drivers/media/common/tuners/tuner-xc2028.c b/drivers/media/common/tuners/tuner-xc2028.c
index 4dd1d2421cc5..fc82d154c8c2 100644
--- a/drivers/media/common/tuners/tuner-xc2028.c
+++ b/drivers/media/common/tuners/tuner-xc2028.c
@@ -71,9 +71,6 @@ struct firmware_properties {
 struct xc2028_data {
         struct list_head        hybrid_tuner_instance_list;
         struct tuner_i2c_props  i2c_props;
-        int                     (*tuner_callback) (void *dev,
-                                                   int command, int arg);
-        void                    *video_dev;
         __u32                   frequency;
 
         struct firmware_description *firm;
@@ -492,6 +489,23 @@ ret:
         return i;
 }
 
+static inline int do_tuner_callback(struct dvb_frontend *fe, int cmd, int arg)
+{
+        struct xc2028_data *priv = fe->tuner_priv;
+
+        /* analog side (tuner-core) uses i2c_adap->algo_data.
+         * digital side is not guaranteed to have algo_data defined.
+         *
+         * digital side will always have fe->dvb defined.
+         * analog side (tuner-core) doesn't (yet) define fe->dvb.
+         */
+
+        return (!fe->callback) ? -EINVAL :
+                fe->callback(((fe->dvb) && (fe->dvb->priv)) ?
+                                fe->dvb->priv : priv->i2c_props.adap->algo_data,
+                             DVB_FRONTEND_COMPONENT_TUNER, cmd, arg);
+}
+
 static int load_firmware(struct dvb_frontend *fe, unsigned int type,
                          v4l2_std_id *id)
 {
@@ -530,8 +544,7 @@ static int load_firmware(struct dvb_frontend *fe, unsigned int type,
 
                 if (!size) {
                         /* Special callback command received */
-                        rc = priv->tuner_callback(priv->video_dev,
-                                                  XC2028_TUNER_RESET, 0);
+                        rc = do_tuner_callback(fe, XC2028_TUNER_RESET, 0);
                         if (rc < 0) {
                                 tuner_err("Error at RESET code %d\n",
                                            (*p) & 0x7f);
@@ -542,8 +555,7 @@ static int load_firmware(struct dvb_frontend *fe, unsigned int type,
                 if (size >= 0xff00) {
                         switch (size) {
                         case 0xff00:
-                                rc = priv->tuner_callback(priv->video_dev,
-                                                        XC2028_RESET_CLK, 0);
+                                rc = do_tuner_callback(fe, XC2028_RESET_CLK, 0);
                                 if (rc < 0) {
                                         tuner_err("Error at RESET code %d\n",
                                                   (*p) & 0x7f);
@@ -715,8 +727,7 @@ retry:
         memset(&priv->cur_fw, 0, sizeof(priv->cur_fw));
 
         /* Reset is needed before loading firmware */
-        rc = priv->tuner_callback(priv->video_dev,
-                                  XC2028_TUNER_RESET, 0);
+        rc = do_tuner_callback(fe, XC2028_TUNER_RESET, 0);
         if (rc < 0)
                 goto fail;
 
@@ -933,7 +944,7 @@ static int generic_set_freq(struct dvb_frontend *fe, u32 freq /* in HZ */,
            The reset CLK is needed only with tm6000.
            Driver should work fine even if this fails.
          */
-        priv->tuner_callback(priv->video_dev, XC2028_RESET_CLK, 1);
+        do_tuner_callback(fe, XC2028_RESET_CLK, 1);
 
         msleep(10);
 
@@ -1177,20 +1188,10 @@ struct dvb_frontend *xc2028_attach(struct dvb_frontend *fe,
                 break;
         case 1:
                 /* new tuner instance */
-                priv->tuner_callback = cfg->callback;
                 priv->ctrl.max_len = 13;
 
                 mutex_init(&priv->lock);
 
-                /* analog side (tuner-core) uses i2c_adap->algo_data.
-                 * digital side is not guaranteed to have algo_data defined.
-                 *
-                 * digital side will always have fe->dvb defined.
-                 * analog side (tuner-core) doesn't (yet) define fe->dvb.
-                 */
-                priv->video_dev = ((fe->dvb) && (fe->dvb->priv)) ?
-                                   fe->dvb->priv : cfg->i2c_adap->algo_data;
-
                 fe->tuner_priv = priv;
                 break;
         case 2: