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V4L/DVB (6628): zl10353: Improve support for boards without a tuner on secondary i2c

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Issue FSM_GO instead of TUNER_GO if there is no tuner attached to the
secondary i2c bus.

Signed-off-by: Chris Pascoe <c.pascoe@itee.uq.edu.au>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Chris Pascoe 2007-11-19 03:32:06 -03:00 committed by Mauro Carvalho Chehab
parent a644e4a3e9
commit 58d834ea89
2 changed files with 17 additions and 19 deletions
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34
drivers/media/dvb/frontends/zl10353.c
View File

@ -183,35 +183,31 @@ static int zl10353_set_parameters(struct dvb_frontend *fe,
if (fe->ops.i2c_gate_ctrl) if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0); fe->ops.i2c_gate_ctrl(fe, 0);
// if there is no attached secondary tuner, we call set_params to program /*
// a potential tuner attached somewhere else * If there is no tuner attached to the secondary I2C bus, we call
* set_params to program a potential tuner attached somewhere else.
* Otherwise, we update the PLL registers via calc_regs.
*/
if (state->config.no_tuner) { if (state->config.no_tuner) {
if (fe->ops.tuner_ops.set_params) { if (fe->ops.tuner_ops.set_params) {
fe->ops.tuner_ops.set_params(fe, param); fe->ops.tuner_ops.set_params(fe, param);
if (fe->ops.i2c_gate_ctrl) if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0); fe->ops.i2c_gate_ctrl(fe, 0);
} }
} } else if (fe->ops.tuner_ops.calc_regs) {
fe->ops.tuner_ops.calc_regs(fe, param, pllbuf + 1, 5);
// if pllbuf is defined, retrieve the settings
if (fe->ops.tuner_ops.calc_regs) {
fe->ops.tuner_ops.calc_regs(fe, param, pllbuf+1, 5);
pllbuf[1] <<= 1; pllbuf[1] <<= 1;
} else { zl10353_write(fe, pllbuf, sizeof(pllbuf));
// fake pllbuf settings
pllbuf[1] = 0x61 << 1;
pllbuf[2] = 0;
pllbuf[3] = 0;
pllbuf[3] = 0;
pllbuf[4] = 0;
} }
// there is no call to _just_ start decoding, so we send the pllbuf anyway
// even if there isn't a PLL attached to the secondary bus
zl10353_write(fe, pllbuf, sizeof(pllbuf));
zl10353_single_write(fe, 0x5F, 0x13); zl10353_single_write(fe, 0x5F, 0x13);
zl10353_single_write(fe, 0x70, 0x01);
/* If no attached tuner or invalid PLL registers, just start the FSM. */
if (state->config.no_tuner || fe->ops.tuner_ops.calc_regs == NULL)
zl10353_single_write(fe, FSM_GO, 0x01);
else
zl10353_single_write(fe, TUNER_GO, 0x01);
udelay(250); udelay(250);
zl10353_single_write(fe, 0xE4, 0x00); zl10353_single_write(fe, 0xE4, 0x00);
zl10353_single_write(fe, 0xE5, 0x2A); zl10353_single_write(fe, 0xE5, 0x2A);

2
drivers/media/dvb/frontends/zl10353_priv.h
View File

@ -48,6 +48,8 @@ enum zl10353_reg_addr {
RS_UBC_0 = 0x15, RS_UBC_0 = 0x15,
TRL_NOMINAL_RATE_1 = 0x65, TRL_NOMINAL_RATE_1 = 0x65,
TRL_NOMINAL_RATE_0 = 0x66, TRL_NOMINAL_RATE_0 = 0x66,
TUNER_GO = 0x70,
FSM_GO = 0x71,
CHIP_ID = 0x7F, CHIP_ID = 0x7F,
}; };