@@ -43,6 +43,8 @@ struct mb86a20s_state {
const struct mb86a20s_config *config;
struct dvb_frontend frontend;
+
+ bool need_init;
};
struct regdata {
@@ -382,23 +384,31 @@ static int mb86a20s_initfe(struct dvb_frontend *fe)
/* Initialize the frontend */
rc = mb86a20s_writeregdata(state, mb86a20s_init);
if (rc < 0)
- return rc;
+ goto err;
if (!state->config->is_serial) {
regD5 &= ~1;
rc = mb86a20s_writereg(state, 0x50, 0xd5);
if (rc < 0)
- return rc;
+ goto err;
rc = mb86a20s_writereg(state, 0x51, regD5);
if (rc < 0)
- return rc;
+ goto err;
}
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
- return 0;
+err:
+ if (rc < 0) {
+ state->need_init = true;
+ printk(KERN_INFO "mb86a20s: Init failed. Will try again later\n");
+ } else {
+ state->need_init = false;
+ dprintk("Initialization succeded.\n");
+ }
+ return rc;
}
static int mb86a20s_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
@@ -485,8 +495,22 @@ static int mb86a20s_set_frontend(struct dvb_frontend *fe,
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
+ dprintk("Calling tuner set parameters\n");
fe->ops.tuner_ops.set_params(fe, p);
+ /*
+ * Make it more reliable: if, for some reason, the initial
+ * device initialization doesn't happen, initialize it when
+ * a SBTVD parameters are adjusted.
+ *
+ * Unfortunately, due to a hard to track bug at tda829x/tda18271,
+ * the agc callback logic is not called during DVB attach time,
+ * causing mb86a20s to not be initialized with Kworld SBTVD.
+ * So, this hack is needed, in order to make Kworld SBTVD to work.
+ */
+ if (state->need_init)
+ mb86a20s_initfe(fe);
+
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
rc = mb86a20s_writeregdata(state, mb86a20s_reset_reception);