V4L/DVB (7041): s5h1409: Bug fix for parallel support

Parallel support was not working with the s5h1409 and the Pinnacle HD800i.
This patch fixes the demodulator driver and ensures that all existing
s5h1409 based products configure the demodulator correctly.

Signed-off-by: Steven Toth <stoth@hauppauge.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

2 files changed, 51 insertions, 7 deletions

diff --git a/drivers/media/dvb/frontends/s5h1409.c b/drivers/media/dvb/frontends/s5h1409.c
index 3391777e0b2f..819433485d3b 100644
--- a/drivers/media/dvb/frontends/s5h1409.c
+++ b/drivers/media/dvb/frontends/s5h1409.c
@@ -98,7 +98,7 @@ static struct init_tab {
 	{ 0xac, 0x1003, },
 	{ 0xad, 0x103f, },
 	{ 0xe2, 0x0100, },
-	{ 0xe3, 0x0000, },
+	{ 0xe3, 0x1000, },
 	{ 0x28, 0x1010, },
 	{ 0xb1, 0x000e, },
 };
@@ -441,9 +441,11 @@ static int s5h1409_set_gpio(struct dvb_frontend* fe, int enable)
 	dprintk("%s(%d)\n", __FUNCTION__, enable);
 
 	if (enable)
-		return s5h1409_writereg(state, 0xe3, 0x1100);
+		return s5h1409_writereg(state, 0xe3,
+			s5h1409_readreg(state, 0xe3) | 0x1100);
 	else
-		return s5h1409_writereg(state, 0xe3, 0x1000);
+		return s5h1409_writereg(state, 0xe3,
+			s5h1409_readreg(state, 0xe3) & 0xeeff);
 }
 
 static int s5h1409_sleep(struct dvb_frontend* fe, int enable)
@@ -513,13 +515,15 @@ static void s5h1409_set_qam_interleave_mode(struct dvb_frontend *fe)
 			s5h1409_writereg(state, 0x96, 0x20);
 			s5h1409_writereg(state, 0xad,
 				( ((reg1 & 0xf000) >> 4) | (reg2 & 0xf0ff)) );
-			s5h1409_writereg(state, 0xab, 0x1100);
+			s5h1409_writereg(state, 0xab,
+				s5h1409_readreg(state, 0xab) & 0xeffe);
 		}
 	} else {
 		if (state->qam_state != 1) {
 			state->qam_state = 1;
 			s5h1409_writereg(state, 0x96, 0x08);
-			s5h1409_writereg(state, 0xab, 0x1101);
+			s5h1409_writereg(state, 0xab,
+				s5h1409_readreg(state, 0xab) | 0x1001);
 		}
 	}
 }
@@ -556,6 +560,36 @@ static int s5h1409_set_frontend (struct dvb_frontend* fe,
 	return 0;
 }
 
+static int s5h1409_set_mpeg_timing(struct dvb_frontend *fe, int mode)
+{
+	struct s5h1409_state *state = fe->demodulator_priv;
+	u16 val;
+
+	dprintk("%s(%d)\n", __FUNCTION__, mode);
+
+	val = s5h1409_readreg(state, 0xac) & 0xcfff;
+	switch (mode) {
+	case S5H1409_MPEGTIMING_CONTINOUS_INVERTING_CLOCK:
+		val |= 0x0000;
+		break;
+	case S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK:
+		dprintk("%s(%d) Mode1 or Defaulting\n", __FUNCTION__, mode);
+		val |= 0x1000;
+		break;
+	case S5H1409_MPEGTIMING_NONCONTINOUS_INVERTING_CLOCK:
+		val |= 0x2000;
+		break;
+	case S5H1409_MPEGTIMING_NONCONTINOUS_NONINVERTING_CLOCK:
+		val |= 0x3000;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/* Configure MPEG Signal Timing charactistics */
+	return s5h1409_writereg(state, 0xac, val);
+}
+
 /* Reset the demod hardware and reset all of the configuration registers
    to a default state. */
 static int s5h1409_init (struct dvb_frontend* fe)
@@ -575,13 +609,16 @@ static int s5h1409_init (struct dvb_frontend* fe)
 	state->current_modulation = VSB_8;
 
 	if (state->config->output_mode == S5H1409_SERIAL_OUTPUT)
-		s5h1409_writereg(state, 0xab, 0x100); /* Serial */
+		s5h1409_writereg(state, 0xab,
+			s5h1409_readreg(state, 0xab) | 0x100); /* Serial */
 	else
-		s5h1409_writereg(state, 0xab, 0x0); /* Parallel */
+		s5h1409_writereg(state, 0xab,
+			s5h1409_readreg(state, 0xab) & 0xfeff); /* Parallel */
 
 	s5h1409_set_spectralinversion(fe, state->config->inversion);
 	s5h1409_set_if_freq(fe, state->if_freq);
 	s5h1409_set_gpio(fe, state->config->gpio);
+	s5h1409_set_mpeg_timing(fe, state->config->mpeg_timing);
 	s5h1409_softreset(fe);
 
 	/* Note: Leaving the I2C gate closed. */
diff --git a/drivers/media/dvb/frontends/s5h1409.h b/drivers/media/dvb/frontends/s5h1409.h
index b1f433906664..f0bb13fe808b 100644
--- a/drivers/media/dvb/frontends/s5h1409.h
+++ b/drivers/media/dvb/frontends/s5h1409.h
@@ -51,6 +51,13 @@ struct s5h1409_config
 #define S5H1409_TUNERLOCKING 0
 #define S5H1409_DEMODLOCKING 1
 	u8 status_mode;
+
+	/* MPEG signal timing */
+#define S5H1409_MPEGTIMING_CONTINOUS_INVERTING_CLOCK       0
+#define S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK    1
+#define S5H1409_MPEGTIMING_NONCONTINOUS_INVERTING_CLOCK    2
+#define S5H1409_MPEGTIMING_NONCONTINOUS_NONINVERTING_CLOCK 3
+	u16 mpeg_timing;
 };
 
 #if defined(CONFIG_DVB_S5H1409) || (defined(CONFIG_DVB_S5H1409_MODULE) && defined(MODULE))