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authorMichael Krufky <mkrufky@linuxtv.org>2008-09-03 15:46:35 -0400
committerMauro Carvalho Chehab <mchehab@redhat.com>2008-09-03 17:36:18 -0400
commit2e7acd75cba3b7afa4007f20f22a86dbbdb21753 (patch)
treec86f81cceda74c7a431f74e145f9dfaf9a9b2bd9 /drivers/media/dvb/frontends/au8522.c
parentbef69ea0dcce574a425feb0a5aa4c63dd108b9a6 (diff)
V4L/DVB (8555): au8522: add mechanism to configure IF frequency for vsb and qam
Add a mechanism to configure IF frequency for vsb and qam. Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/dvb/frontends/au8522.c')
-rw-r--r--drivers/media/dvb/frontends/au8522.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/drivers/media/dvb/frontends/au8522.c b/drivers/media/dvb/frontends/au8522.c
index f7b71657f0f6..5741bc930792 100644
--- a/drivers/media/dvb/frontends/au8522.c
+++ b/drivers/media/dvb/frontends/au8522.c
@@ -304,6 +304,70 @@ static int au8522_mse2snr_lookup(struct mse2snr_tab *tab, int sz, int mse,
304 return ret; 304 return ret;
305} 305}
306 306
307/* 3.25 MHz IF Frequency table */
308static struct {
309 u16 reg;
310 u16 data;
311} if_3_25_mhz_tab[] = {
312 { 0x80b5, 0x00 },
313 { 0x80b6, 0x3d },
314 { 0x80b7, 0xa0 },
315};
316
317/* 4.00 MHz IF Frequency table */
318static struct {
319 u16 reg;
320 u16 data;
321} if_4_mhz_tab[] = {
322 { 0x80b5, 0x00 },
323 { 0x80b6, 0x4b },
324 { 0x80b7, 0xd9 },
325};
326
327/* 6.00 MHz IF Frequency table */
328static struct {
329 u16 reg;
330 u16 data;
331} if_6_mhz_tab[] = {
332 { 0x80b5, 0xfb },
333 { 0x80b6, 0x8e },
334 { 0x80b7, 0x39 },
335};
336
337static int au8522_set_if(struct dvb_frontend *fe, enum au8522_if_freq if_freq)
338{
339 struct au8522_state *state = fe->demodulator_priv;
340 int i;
341
342 switch (if_freq) {
343 case AU8522_IF_3_25MHZ:
344 dprintk("%s() 3.25 MHz\n", __func__);
345 for (i = 0; i < ARRAY_SIZE(if_3_25_mhz_tab); i++)
346 au8522_writereg(state,
347 if_3_25_mhz_tab[i].reg,
348 if_3_25_mhz_tab[i].data);
349 break;
350 case AU8522_IF_4MHZ:
351 dprintk("%s() 4.00 MHz\n", __func__);
352 for (i = 0; i < ARRAY_SIZE(if_4_mhz_tab); i++)
353 au8522_writereg(state,
354 if_4_mhz_tab[i].reg,
355 if_4_mhz_tab[i].data);
356 break;
357 case AU8522_IF_6MHZ:
358 dprintk("%s() 6.00 MHz\n", __func__);
359 for (i = 0; i < ARRAY_SIZE(if_6_mhz_tab); i++)
360 au8522_writereg(state,
361 if_6_mhz_tab[i].reg,
362 if_6_mhz_tab[i].data);
363 break;
364 default:
365 dprintk("%s() IF Frequency not supported\n", __func__);
366 return -EINVAL;
367 }
368 return 0;
369}
370
307/* VSB Modulation table */ 371/* VSB Modulation table */
308static struct { 372static struct {
309 u16 reg; 373 u16 reg;
@@ -438,6 +502,7 @@ static int au8522_enable_modulation(struct dvb_frontend *fe,
438 au8522_writereg(state, 502 au8522_writereg(state,
439 VSB_mod_tab[i].reg, 503 VSB_mod_tab[i].reg,
440 VSB_mod_tab[i].data); 504 VSB_mod_tab[i].data);
505 au8522_set_if(fe, state->config->vsb_if);
441 break; 506 break;
442 case QAM_64: 507 case QAM_64:
443 case QAM_256: 508 case QAM_256:
@@ -446,6 +511,7 @@ static int au8522_enable_modulation(struct dvb_frontend *fe,
446 au8522_writereg(state, 511 au8522_writereg(state,
447 QAM_mod_tab[i].reg, 512 QAM_mod_tab[i].reg,
448 QAM_mod_tab[i].data); 513 QAM_mod_tab[i].data);
514 au8522_set_if(fe, state->config->qam_if);
449 break; 515 break;
450 default: 516 default:
451 dprintk("%s() Invalid modulation\n", __func__); 517 dprintk("%s() Invalid modulation\n", __func__);