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V4L/DVB (9430): stb0899: avoid parameter overwriting 

BUG! Setting CRL parameter overwrote the CR Algorithm type,
eventually leading to wrong search algorithm to be employed in
the DVB-S carrier loop optimization.

Symptom: Once the CR optimization stage is passed either way, in
a successful or failed manner, the very next carrier search will
fail, due to no Carrier Search Algorithm specified.

Signed-off-by: Arvo Jarve <arvo@softshark.ee>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Arvo Jarve 2007-10-30 09:16:17 -03:00 committed by Mauro Carvalho Chehab
parent 5dc1611cb2
commit b655b6cbc9
1 changed files with 7 additions and 18 deletions
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25
drivers/media/dvb/frontends/stb0899_algo.c
View File

@ -675,7 +675,6 @@ enum stb0899_status stb0899_dvbs_algo(struct stb0899_state *state)
/* Set the timing loop to tracking */
stb0899_write_reg(state, STB0899_RTC, 0x33);
stb0899_write_reg(state, STB0899_CFD, 0xf7);
reg = 0;
/* if locked and range ok, set Kdiv */
if (internal->status == RANGEOK) {
dprintk(state->verbose, FE_DEBUG, 1, "Locked & Range OK !");
@ -686,45 +685,35 @@ enum stb0899_status stb0899_dvbs_algo(struct stb0899_state *state)
* Carrier loop optimization versus
* symbol Rate/Puncture Rate for Tracking
*/
reg = stb0899_read_reg(state, STB0899_BCLC);
switch (internal->fecrate) {
case STB0899_FEC_1_2: /* 13 */
STB0899_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 0x1a);
stb0899_write_reg(state, STB0899_DEMAPVIT, reg);
reg = 0;
stb0899_write_reg(state, STB0899_DEMAPVIT, 0x1a);
STB0899_SETFIELD_VAL(BETA, reg, betaTab[0][clnI]);
stb0899_write_reg(state, STB0899_BCLC, reg);
break;
case STB0899_FEC_2_3: /* 18 */
STB0899_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 44);
stb0899_write_reg(state, STB0899_DEMAPVIT, reg);
reg = 0;
stb0899_write_reg(state, STB0899_DEMAPVIT, 44);
STB0899_SETFIELD_VAL(BETA, reg, betaTab[1][clnI]);
stb0899_write_reg(state, STB0899_BCLC, reg);
break;
case STB0899_FEC_3_4: /* 21 */
STB0899_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 60);
stb0899_write_reg(state, STB0899_DEMAPVIT, reg);
reg = 0;
stb0899_write_reg(state, STB0899_DEMAPVIT, 60);
STB0899_SETFIELD_VAL(BETA, reg, betaTab[2][clnI]);
stb0899_write_reg(state, STB0899_BCLC, reg);
break;
case STB0899_FEC_5_6: /* 24 */
STB0899_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 75);
stb0899_write_reg(state, STB0899_DEMAPVIT, reg);
reg = 0;
stb0899_write_reg(state, STB0899_DEMAPVIT, 75);
STB0899_SETFIELD_VAL(BETA, reg, betaTab[3][clnI]);
stb0899_write_reg(state, STB0899_BCLC, reg);
break;
case STB0899_FEC_6_7: /* 25 */
STB0899_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 88);
stb0899_write_reg(state, STB0899_DEMAPVIT, reg);
stb0899_write_reg(state, STB0899_DEMAPVIT, 88);
stb0899_write_reg(state, STB0899_ACLC, 0x88);
stb0899_write_reg(state, STB0899_BCLC, 0x9a);
break;
case STB0899_FEC_7_8: /* 26 */
STB0899_SETFIELD_VAL(DEMAPVIT_KDIVIDER, reg, 94);
stb0899_write_reg(state, STB0899_DEMAPVIT, reg);
reg = 0;
stb0899_write_reg(state, STB0899_DEMAPVIT, 94);
STB0899_SETFIELD_VAL(BETA, reg, betaTab[4][clnI]);
stb0899_write_reg(state, STB0899_BCLC, reg);
break;