Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-02 02:01:29 +00:00
Code Issues Packages Projects Releases Wiki Activity

V4L/DVB (12292): b2c2: Use dvb-pll for AirStar DVB-T's tuner

Browse Source 
The code in samsung_tdtc9251dh0_calc_regs() is equivalent to what dvb-pll's
code does.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Trent Piepho 2009-06-11 19:31:22 -03:00 committed by Mauro Carvalho Chehab
parent d799ce5708
commit 6d67c9717b
1 changed files with 6 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
drivers/media/dvb/b2c2/flexcop-fe-tuner.c
View File

@ -449,7 +449,7 @@ static int skystar2_rev28_attach(struct flexcop_device *fc,
#endif
/* AirStar DVB-T */
#if FE_SUPPORTED(MT352)
#if FE_SUPPORTED(MT352) && FE_SUPPORTED(PLL)
static int samsung_tdtc9251dh0_demod_init(struct dvb_frontend *fe)
{
static u8 mt352_clock_config[] = { 0x89, 0x18, 0x2d };
@ -467,32 +467,6 @@ static int samsung_tdtc9251dh0_demod_init(struct dvb_frontend *fe)
return 0;
}
static int samsung_tdtc9251dh0_calc_regs(struct dvb_frontend *fe,
struct dvb_frontend_parameters *params, u8* pllbuf, int buf_len)
{
u32 div;
unsigned char bs = 0;
if (buf_len < 5)
return -EINVAL;
#define IF_FREQUENCYx6 217 /* 6 * 36.16666666667MHz */
div = (((params->frequency + 83333) * 3) / 500000) + IF_FREQUENCYx6;
if (params->frequency >= 48000000 && params->frequency <= 154000000) \
bs = 0x09;
if (params->frequency >= 161000000 && params->frequency <= 439000000) \
bs = 0x0a;
if (params->frequency >= 447000000 && params->frequency <= 863000000) \
bs = 0x08;
pllbuf[0] = 0x61;
pllbuf[1] = div >> 8;
pllbuf[2] = div & 0xff;
pllbuf[3] = 0xcc;
pllbuf[4] = bs;
return 5;
}
static struct mt352_config samsung_tdtc9251dh0_config = {
.demod_address = 0x0f,
.demod_init = samsung_tdtc9251dh0_demod_init,
@ -502,11 +476,11 @@ static int airstar_dvbt_attach(struct flexcop_device *fc,
struct i2c_adapter *i2c)
{
fc->fe = dvb_attach(mt352_attach, &samsung_tdtc9251dh0_config, i2c);
if (fc->fe != NULL) {
fc->fe->ops.tuner_ops.calc_regs = samsung_tdtc9251dh0_calc_regs;
return 1;
}
return 0;
if (!fc->fe)
return 0;
return !!dvb_attach(dvb_pll_attach, fc->fe, 0x61, NULL,
DVB_PLL_SAMSUNG_TDTC9251DH0);
}
#else
#define airstar_dvbt_attach NULL