V4L/DVB (7654): tda10086: make the xtal frequency a configuration option

Some DVB-S boards, i.e. with the SD1878 tuner, use a 4 MHz reference frequency.
This reqires a different setup of the clock PLL.
This patch adds an enum to the tda10086_config struct and sets the proper
values for the boards.

This patch also fixes the DVB-S section of the MD7134_BRIDGE_2

Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 8 insertions, 3 deletions

diff --git a/drivers/media/dvb/frontends/tda10086.c b/drivers/media/dvb/frontends/tda10086.c
index 5fc26757f393..acf1471373ca 100644
--- a/drivers/media/dvb/frontends/tda10086.c
+++ b/drivers/media/dvb/frontends/tda10086.c
@@ -128,10 +128,15 @@ static int tda10086_init(struct dvb_frontend* fe)
         tda10086_write_byte(state, 0x32, 0x00); // irq off
         tda10086_write_byte(state, 0x31, 0x56); // setup AFC
 
-        // setup PLL (assumes 16Mhz XIN)
+        // setup PLL (this assumes SACLK = 96MHz)
         tda10086_write_byte(state, 0x55, 0x2c); // misc PLL setup
-        tda10086_write_byte(state, 0x3a, 0x0b); // M=12
-        tda10086_write_byte(state, 0x3b, 0x01); // P=2
+        if (state->config->xtal_freq == TDA10086_XTAL_16M) {
+                tda10086_write_byte(state, 0x3a, 0x0b); // M=12
+                tda10086_write_byte(state, 0x3b, 0x01); // P=2
+        } else {
+                tda10086_write_byte(state, 0x3a, 0x17); // M=24
+                tda10086_write_byte(state, 0x3b, 0x00); // P=1
+        }
         tda10086_write_mask(state, 0x55, 0x20, 0x00); // powerup PLL
 
         // setup TS interface