V4L/DVB (7572): mt312: Fix diseqc

Correct the frequency of the emitted diseqc signal to 22kHz.
Adds sleep(100) to wait for message to be transmitted.

For now the only user of mt312 is b2c2-flexcop, and it
does overwrite all diseqc related functions with own code.

Signed-off-by: Matthias Schwarzott <zzam@gentoo.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/media/dvb/frontends/mt312.c b/drivers/media/dvb/frontends/mt312.c
index b03a959ef2e8..32b419477887 100644
--- a/drivers/media/dvb/frontends/mt312.c
+++ b/drivers/media/dvb/frontends/mt312.c
@@ -270,7 +270,7 @@ static int mt312_initfe(struct dvb_frontend *fe)
                                 MT312_SYS_CLK) * 2, 1000000);
 
         /* DISEQC_RATIO */
-        buf[1] = mt312_div(MT312_PLL_CLK, 15000 * 4);
+        buf[1] = mt312_div(MT312_PLL_CLK, 22000 * 4);
 
         ret = mt312_write(state, SYS_CLK, buf, sizeof(buf));
         if (ret < 0)
@@ -323,6 +323,9 @@ static int mt312_send_master_cmd(struct dvb_frontend *fe,
         if (ret < 0)
                 return ret;
 
+        /* is there a better way to wait for message to be transmitted */
+        msleep(100);
+
         /* set DISEQC_MODE[2:0] to zero if a return message is expected */
         if (c->msg[0] & 0x02) {
                 ret = mt312_writereg(state, DISEQC_MODE, (diseqc_mode & 0x40));