[PATCH] dvb: let other frontends support FE_DISHNETWORK_SEND_LEGACY_CMD

Add support to FE_DISHNETWORK_SEND_LEGACY_CMD code to support other frontends
besides stv0299.  The generic code is a fallback in the case that it doesn't
work for some specific frontends (again stv0299 being a good example).

Signed-off-by: NooneImportant <nxhxzi702@sneakemail.com>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Cc: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 4 insertions, 34 deletions

diff --git a/drivers/media/dvb/frontends/stv0299.c b/drivers/media/dvb/frontends/stv0299.c
index b1876618a37d..ae00d7a40d7c 100644
--- a/drivers/media/dvb/frontends/stv0299.c
+++ b/drivers/media/dvb/frontends/stv0299.c
@@ -387,36 +387,6 @@ static int stv0299_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t voltag
         };
 }
 
-static inline s32 stv0299_calc_usec_delay (struct timeval lasttime, struct timeval curtime)
-{
-        return ((curtime.tv_usec < lasttime.tv_usec) ?
-                1000000 - lasttime.tv_usec + curtime.tv_usec :
-                curtime.tv_usec - lasttime.tv_usec);
-}
-
-static void stv0299_sleep_until (struct timeval *waketime, u32 add_usec)
-{
-        struct timeval lasttime;
-        s32 delta, newdelta;
-
-        waketime->tv_usec += add_usec;
-        if (waketime->tv_usec >= 1000000) {
-                waketime->tv_usec -= 1000000;
-                waketime->tv_sec++;
-        }
-
-        do_gettimeofday (&lasttime);
-        delta = stv0299_calc_usec_delay (lasttime, *waketime);
-        if (delta > 2500) {
-                msleep ((delta - 1500) / 1000);
-                do_gettimeofday (&lasttime);
-                newdelta = stv0299_calc_usec_delay (lasttime, *waketime);
-                delta = (newdelta > delta) ? 0 : newdelta;
-        }
-        if (delta > 0)
-                udelay (delta);
-}
-
 static int stv0299_send_legacy_dish_cmd (struct dvb_frontend* fe, u32 cmd)
 {
         struct stv0299_state* state = fe->demodulator_priv;
@@ -444,7 +414,7 @@ static int stv0299_send_legacy_dish_cmd (struct dvb_frontend* fe, u32 cmd)
                 memcpy (&tv[0], &nexttime, sizeof (struct timeval));
         stv0299_writeregI (state, 0x0c, reg0x0c | 0x50); /* set LNB to 18V */
 
-        stv0299_sleep_until (&nexttime, 32000);
+        dvb_frontend_sleep_until(&nexttime, 32000);
 
         for (i=0; i<9; i++) {
                 if (debug_legacy_dish_switch)
@@ -458,13 +428,13 @@ static int stv0299_send_legacy_dish_cmd (struct dvb_frontend* fe, u32 cmd)
                 cmd = cmd >> 1;
 
                 if (i != 8)
-                        stv0299_sleep_until (&nexttime, 8000);
+                        dvb_frontend_sleep_until(&nexttime, 8000);
         }
         if (debug_legacy_dish_switch) {
                 printk ("%s(%d): switch delay (should be 32k followed by all 8k\n",
                         __FUNCTION__, fe->dvb->num);
-                for (i=1; i < 10; i++)
-                        printk ("%d: %d\n", i, stv0299_calc_usec_delay (tv[i-1] , tv[i]));
+                for (i = 1; i < 10; i++)
+                        printk ("%d: %d\n", i, timeval_usec_diff(tv[i-1] , tv[i]));
         }
 
         return 0;