From: Richard Vollkommer <linux@xxxxxxxxxxxxx>
Improves lock performance with signals from the ZeeVee family
of modulators.
Signed-off-by: Richard Vollkommer <linux@xxxxxxxxxxxxx>
Cc: Devin Heitmueller <dheitmueller@xxxxxxxxxxxxxx>
Signed-off-by: Michael Ira Krufky <mkrufky@xxxxxxxxxxx>
---
drivers/media/dvb-frontends/au8522_dig.c | 117 +++++++++++++++++++++++++++++--
1 file changed, 110 insertions(+), 7 deletions(-)
diff --git a/drivers/media/dvb-frontends/au8522_dig.c b/drivers/media/dvb-frontends/au8522_dig.c
index a68974f..5d06c99 100644
--- a/drivers/media/dvb-frontends/au8522_dig.c
+++ b/drivers/media/dvb-frontends/au8522_dig.c
@@ -29,6 +29,7 @@
#include "au8522_priv.h"
static int debug;
+static int zv_mode = 1; /* default to on */
#define dprintk(arg...)\
do { if (debug)\
@@ -469,6 +470,87 @@ static struct {
{ 0x8526, 0x01 },
};
+static struct {
+ u16 reg;
+ u16 data;
+} QAM256_mod_tab_zv_mode[] = {
+ { 0x80a3, 0x09 },
+ { 0x80a4, 0x00 },
+ { 0x8081, 0xc4 },
+ { 0x80a5, 0x40 },
+ { 0x80b5, 0xfb },
+ { 0x80b6, 0x8e },
+ { 0x80b7, 0x39 },
+ { 0x80aa, 0x77 },
+ { 0x80ad, 0x77 },
+ { 0x80a6, 0x67 },
+ { 0x8262, 0x20 },
+ { 0x821c, 0x30 },
+ { 0x80b8, 0x3e },
+ { 0x80b9, 0xf0 },
+ { 0x80ba, 0x01 },
+ { 0x80bb, 0x18 },
+ { 0x80bc, 0x50 },
+ { 0x80bd, 0x00 },
+ { 0x80be, 0xea },
+ { 0x80bf, 0xef },
+ { 0x80c0, 0xfc },
+ { 0x80c1, 0xbd },
+ { 0x80c2, 0x1f },
+ { 0x80c3, 0xfc },
+ { 0x80c4, 0xdd },
+ { 0x80c5, 0xaf },
+ { 0x80c6, 0x00 },
+ { 0x80c7, 0x38 },
+ { 0x80c8, 0x30 },
+ { 0x80c9, 0x05 },
+ { 0x80ca, 0x4a },
+ { 0x80cb, 0xd0 },
+ { 0x80cc, 0x01 },
+ { 0x80cd, 0xd9 },
+ { 0x80ce, 0x6f },
+ { 0x80cf, 0xf9 },
+ { 0x80d0, 0x70 },
+ { 0x80d1, 0xdf },
+ { 0x80d2, 0xf7 },
+ { 0x80d3, 0xc2 },
+ { 0x80d4, 0xdf },
+ { 0x80d5, 0x02 },
+ { 0x80d6, 0x9a },
+ { 0x80d7, 0xd0 },
+ { 0x8250, 0x0d },
+ { 0x8251, 0xcd },
+ { 0x8252, 0xe0 },
+ { 0x8253, 0x05 },
+ { 0x8254, 0xa7 },
+ { 0x8255, 0xff },
+ { 0x8256, 0xed },
+ { 0x8257, 0x5b },
+ { 0x8258, 0xae },
+ { 0x8259, 0xe6 },
+ { 0x825a, 0x3d },
+ { 0x825b, 0x0f },
+ { 0x825c, 0x0d },
+ { 0x825d, 0xea },
+ { 0x825e, 0xf2 },
+ { 0x825f, 0x51 },
+ { 0x8260, 0xf5 },
+ { 0x8261, 0x06 },
+ { 0x821a, 0x01 },
+ { 0x8546, 0x40 },
+ { 0x8210, 0x26 },
+ { 0x8211, 0xf6 },
+ { 0x8212, 0x84 },
+ { 0x8213, 0x02 },
+ { 0x8502, 0x01 },
+ { 0x8121, 0x04 },
+ { 0x8122, 0x04 },
+ { 0x852e, 0x10 },
+ { 0x80a4, 0xca },
+ { 0x80a7, 0x40 },
+ { 0x8526, 0x01 },
+};
+
static int au8522_enable_modulation(struct dvb_frontend *fe,
fe_modulation_t m)
{
@@ -495,12 +577,23 @@ static int au8522_enable_modulation(struct dvb_frontend *fe,
au8522_set_if(fe, state->config->qam_if);
break;
case QAM_256:
- dprintk("%s() QAM 256\n", __func__);
- for (i = 0; i < ARRAY_SIZE(QAM256_mod_tab); i++)
- au8522_writereg(state,
- QAM256_mod_tab[i].reg,
- QAM256_mod_tab[i].data);
- au8522_set_if(fe, state->config->qam_if);
+ if (zv_mode) {
+ dprintk("%s() QAM 256 (zv_mode)\n", __func__);
+ for (i = 0; i < ARRAY_SIZE(QAM256_mod_tab_zv_mode); i++)
+ au8522_writereg(state,
+ QAM256_mod_tab_zv_mode[i].reg,
+ QAM256_mod_tab_zv_mode[i].data);
+ au8522_set_if(fe, state->config->qam_if);
+ msleep(100);
+ au8522_writereg(state, 0x821a, 0x00);
+ } else {
+ dprintk("%s() QAM 256\n", __func__);
+ for (i = 0; i < ARRAY_SIZE(QAM256_mod_tab); i++)
+ au8522_writereg(state,
+ QAM256_mod_tab[i].reg,
+ QAM256_mod_tab[i].data);
+ au8522_set_if(fe, state->config->qam_if);
+ }
break;
default:
dprintk("%s() Invalid modulation\n", __func__);
@@ -537,7 +630,12 @@ static int au8522_set_frontend(struct dvb_frontend *fe)
return ret;
/* Allow the tuner to settle */
- msleep(100);
+ if (zv_mode) {
+ dprintk("%s() increase tuner settling time for zv_mode\n",
+ __func__);
+ msleep(250);
+ } else
+ msleep(100);
au8522_enable_modulation(fe, c->modulation);
@@ -823,6 +921,11 @@ static struct dvb_frontend_ops au8522_ops = {
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Enable verbose debug messages");
+module_param(zv_mode, int, 0644);
+MODULE_PARM_DESC(zv_mode, "Turn on/off ZeeVee modulator compatability mode (default:on).\n"
+ "\t\ton - modified AU8522 QAM256 initialization.\n"
+ "\t\tProvides faster lock when using ZeeVee modulator based sources");
+
MODULE_DESCRIPTION("Auvitek AU8522 QAM-B/ATSC Demodulator driver");
MODULE_AUTHOR("Steven Toth");
MODULE_LICENSE("GPL");
--
1.9.1
--
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