[media] af9033: implement PID filter

Implement PID filter and export it via symbol.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

2 files changed, 72 insertions, 0 deletions

diff --git a/drivers/media/dvb-frontends/af9033.c b/drivers/media/dvb-frontends/af9033.c
index 65728c25ea05..5a1c508c7417 100644
--- a/drivers/media/dvb-frontends/af9033.c
+++ b/drivers/media/dvb-frontends/af9033.c
@@ -989,6 +989,59 @@ err:
         return ret;
 }
 
+int af9033_pid_filter_ctrl(struct dvb_frontend *fe, int onoff)
+{
+        struct af9033_state *state = fe->demodulator_priv;
+        int ret;
+
+        dev_dbg(&state->i2c->dev, "%s: onoff=%d\n", __func__, onoff);
+
+        ret = af9033_wr_reg_mask(state, 0x80f993, onoff, 0x01);
+        if (ret < 0)
+                goto err;
+
+        return 0;
+
+err:
+        dev_dbg(&state->i2c->dev, "%s: failed=%d\n", __func__, ret);
+
+        return ret;
+}
+EXPORT_SYMBOL(af9033_pid_filter_ctrl);
+
+int af9033_pid_filter(struct dvb_frontend *fe, int index, u16 pid, int onoff)
+{
+        struct af9033_state *state = fe->demodulator_priv;
+        int ret;
+        u8 wbuf[2] = {(pid >> 0) & 0xff, (pid >> 8) & 0xff};
+
+        dev_dbg(&state->i2c->dev, "%s: index=%d pid=%04x onoff=%d\n",
+                        __func__, index, pid, onoff);
+
+        if (pid > 0x1fff)
+                return 0;
+
+        ret = af9033_wr_regs(state, 0x80f996, wbuf, 2);
+        if (ret < 0)
+                goto err;
+
+        ret = af9033_wr_reg(state, 0x80f994, onoff);
+        if (ret < 0)
+                goto err;
+
+        ret = af9033_wr_reg(state, 0x80f995, index);
+        if (ret < 0)
+                goto err;
+
+        return 0;
+
+err:
+        dev_dbg(&state->i2c->dev, "%s: failed=%d\n", __func__, ret);
+
+        return ret;
+}
+EXPORT_SYMBOL(af9033_pid_filter);
+
 static struct dvb_frontend_ops af9033_ops;
 
 struct dvb_frontend *af9033_attach(const struct af9033_config *config,
diff --git a/drivers/media/dvb-frontends/af9033.h b/drivers/media/dvb-frontends/af9033.h
index c286e8f1ec02..de245f9adb65 100644
--- a/drivers/media/dvb-frontends/af9033.h
+++ b/drivers/media/dvb-frontends/af9033.h
@@ -81,6 +81,11 @@ struct af9033_config {
 #if IS_ENABLED(CONFIG_DVB_AF9033)
 extern struct dvb_frontend *af9033_attach(const struct af9033_config *config,
         struct i2c_adapter *i2c);
+
+extern int af9033_pid_filter_ctrl(struct dvb_frontend *fe, int onoff);
+
+extern int af9033_pid_filter(struct dvb_frontend *fe, int index, u16 pid,
+        int onoff);
 #else
 static inline struct dvb_frontend *af9033_attach(
         const struct af9033_config *config, struct i2c_adapter *i2c)
@@ -88,6 +93,20 @@ static inline struct dvb_frontend *af9033_attach(
         pr_warn("%s: driver disabled by Kconfig\n", __func__);
         return NULL;
 }
+
+static inline int af9033_pid_filter_ctrl(struct dvb_frontend *fe, int onoff)
+{
+        pr_warn("%s: driver disabled by Kconfig\n", __func__);
+        return -ENODEV;
+}
+
+static inline int af9033_pid_filter(struct dvb_frontend *fe, int index, u16 pid,
+        int onoff)
+{
+        pr_warn("%s: driver disabled by Kconfig\n", __func__);
+        return -ENODEV;
+}
+
 #endif
 
 #endif /* AF9033_H */