V4L/DVB (12288): dvb-pll: Add support for Samsung TBDU18132 DVB-S NIM

Tuner parameters taken from flexcop driver.  This PLL has a 17 bit divisor
while the dvb-pll driver is designed for 15 bit divisors.  It's not a
problem as 15 bits is enough for the tuner's entire range.  But if a larger
range was wanted, it could be done by adding additional bands with the
extra divisor bits appearing as band switch bits.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 23 insertions, 0 deletions

diff --git a/drivers/media/dvb/frontends/dvb-pll.c b/drivers/media/dvb/frontends/dvb-pll.c
index 7bafe4b962e0..7d2d487c9ad4 100644
--- a/drivers/media/dvb/frontends/dvb-pll.c
+++ b/drivers/media/dvb/frontends/dvb-pll.c
@@ -403,6 +403,27 @@ static struct dvb_pll_desc dvb_pll_samsung_tdtc9251dh0 = {
         }
 };
 
+/* Samsung TBDU18132 DVB-S NIM with TSA5059 PLL, used in SkyStar2 DVB-S 2.3 */
+static struct dvb_pll_desc dvb_pll_samsung_tbdu18132 = {
+        .name = "Samsung TBDU18132",
+        .min    =  950000,
+        .max    = 2150000, /* guesses */
+        .iffreq = 0,
+        .count = 2,
+        .entries = {
+                { 1550000, 125, 0x84, 0x82 },
+                { 4095937, 125, 0x84, 0x80 },
+        }
+        /* TSA5059 PLL has a 17 bit divisor rather than the 15 bits supported
+         * by this driver.  The two extra bits are 0x60 in the third byte.  15
+         * bits is enough for over 4 GHz, which is enough to cover the range
+         * of this tuner.  We could use the additional divisor bits by adding
+         * more entries, e.g.
+         { 0x0ffff * 125 + 125/2, 125, 0x84 | 0x20, },
+         { 0x17fff * 125 + 125/2, 125, 0x84 | 0x40, },
+         { 0x1ffff * 125 + 125/2, 125, 0x84 | 0x60, }, */
+};
+
 /* ----------------------------------------------------------- */
 
 static struct dvb_pll_desc *pll_list[] = {
@@ -422,6 +443,7 @@ static struct dvb_pll_desc *pll_list[] = {
         [DVB_PLL_OPERA1]                 = &dvb_pll_opera1,
         [DVB_PLL_SAMSUNG_DTOS403IH102A]  = &dvb_pll_samsung_dtos403ih102a,
         [DVB_PLL_SAMSUNG_TDTC9251DH0]    = &dvb_pll_samsung_tdtc9251dh0,
+        [DVB_PLL_SAMSUNG_TBDU18132]      = &dvb_pll_samsung_tbdu18132,
 };
 
 /* ----------------------------------------------------------- */
diff --git a/drivers/media/dvb/frontends/dvb-pll.h b/drivers/media/dvb/frontends/dvb-pll.h
index dcbb28333046..7905f3440998 100644
--- a/drivers/media/dvb/frontends/dvb-pll.h
+++ b/drivers/media/dvb/frontends/dvb-pll.h
@@ -24,6 +24,7 @@
 #define DVB_PLL_OPERA1                 13
 #define DVB_PLL_SAMSUNG_DTOS403IH102A  14
 #define DVB_PLL_SAMSUNG_TDTC9251DH0    15
+#define DVB_PLL_SAMSUNG_TBDU18132      16
 
 /**
  * Attach a dvb-pll to the supplied frontend structure.