V4L/DVB: dvb: add support for kworld 340u and ub435-q to em28xx-dvb

This adds support for the KWorld PlusTV 340U and KWorld UB345-Q ATSC
sticks, which are really the same device. The sticks have an eMPIA
em2870 usb bridge chipset, an LG Electronics LGDT3304 ATSC/QAM
demodulator and an NXP TDA18271HD tuner -- early versions of the 340U
have a a TDA18271HD/C1, later models and the UB435-Q have a C2.

The stick has been tested succesfully with both VSB_8 and QAM_256 signals.
Its using lgdt3304 support added to the lgdt3305 driver by a prior patch,
rather than the current lgdt3304 driver, as its severely lacking in
functionality by comparison (see said patch for details).

Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Michael Krufky <mkrufky@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/drivers/media/video/em28xx/em28xx-dvb.c b/drivers/media/video/em28xx/em28xx-dvb.c
index cf1d8c3655fc..3ac8d3025fea 100644
--- a/drivers/media/video/em28xx/em28xx-dvb.c
+++ b/drivers/media/video/em28xx/em28xx-dvb.c
@@ -30,11 +30,13 @@
 #include "tuner-simple.h"
 
 #include "lgdt330x.h"
+#include "lgdt3305.h"
 #include "zl10353.h"
 #include "s5h1409.h"
 #include "mt352.h"
 #include "mt352_priv.h" /* FIXME */
 #include "tda1002x.h"
+#include "tda18271.h"
 
 MODULE_DESCRIPTION("driver for em28xx based DVB cards");
 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
@@ -231,6 +233,18 @@ static struct lgdt330x_config em2880_lgdt3303_dev = {
         .demod_chip = LGDT3303,
 };
 
+static struct lgdt3305_config em2870_lgdt3304_dev = {
+        .i2c_addr           = 0x0e,
+        .demod_chip         = LGDT3304,
+        .spectral_inversion = 1,
+        .deny_i2c_rptr      = 1,
+        .mpeg_mode          = LGDT3305_MPEG_PARALLEL,
+        .tpclk_edge         = LGDT3305_TPCLK_FALLING_EDGE,
+        .tpvalid_polarity   = LGDT3305_TP_VALID_HIGH,
+        .vsb_if_khz         = 3250,
+        .qam_if_khz         = 4000,
+};
+
 static struct zl10353_config em28xx_zl10353_with_xc3028 = {
         .demod_address = (0x1e >> 1),
         .no_tuner = 1,
@@ -247,6 +261,17 @@ static struct s5h1409_config em28xx_s5h1409_with_xc3028 = {
         .mpeg_timing   = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
 };
 
+static struct tda18271_std_map kworld_a340_std_map = {
+        .atsc_6   = { .if_freq = 3250, .agc_mode = 3, .std = 0,
+                      .if_lvl = 1, .rfagc_top = 0x37, },
+        .qam_6    = { .if_freq = 4000, .agc_mode = 3, .std = 1,
+                      .if_lvl = 1, .rfagc_top = 0x37, },
+};
+
+static struct tda18271_config kworld_a340_config = {
+        .std_map           = &kworld_a340_std_map,
+};
+
 static struct zl10353_config em28xx_zl10353_xc3028_no_i2c_gate = {
         .demod_address = (0x1e >> 1),
         .no_tuner = 1,
@@ -572,6 +597,14 @@ static int dvb_init(struct em28xx *dev)
                         }
                 }
                 break;
+        case EM2870_BOARD_KWORLD_A340:
+                dvb->frontend = dvb_attach(lgdt3305_attach,
+                                           &em2870_lgdt3304_dev,
+                                           &dev->i2c_adap);
+                if (dvb->frontend != NULL)
+                        dvb_attach(tda18271_attach, dvb->frontend, 0x60,
+                                   &dev->i2c_adap, &kworld_a340_config);
+                break;
         default:
                 em28xx_errdev("/2: The frontend of your DVB/ATSC card"
                                 " isn't supported yet\n");