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V4L/DVB (13983): [STV6110x] add clk_div member to stv6110x_config structure

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Using clk_div member of stv6110x_config structure the tuner's clock
output divider can be configured. It is set in stv6110x_attach.

Signed-off-by: Andreas Regel <andreas.regel@gmx.de>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Andreas Regel 2010-01-05 19:24:10 -03:00 committed by Mauro Carvalho Chehab
parent 9045e72944
commit ca108b39a7
2 changed files with 39 additions and 0 deletions
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38
drivers/media/dvb/frontends/stv6110x.c
View file

@ -362,6 +362,7 @@ struct stv6110x_devctl *stv6110x_attach(struct dvb_frontend *fe,
{
struct stv6110x_state *stv6110x;
u8 default_regs[] = {0x07, 0x11, 0xdc, 0x85, 0x17, 0x01, 0xe6, 0x1e};
int ret;
stv6110x = kzalloc(sizeof (struct stv6110x_state), GFP_KERNEL);
if (stv6110x == NULL)
@ -372,6 +373,43 @@ struct stv6110x_devctl *stv6110x_attach(struct dvb_frontend *fe,
stv6110x->devctl = &stv6110x_ctl;
memcpy(stv6110x->regs, default_regs, 8);
/* setup divider */
switch (stv6110x->config->clk_div) {
default:
case 1:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 0);
break;
case 2:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 1);
break;
case 4:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 2);
break;
case 8:
case 0:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 3);
break;
}
if (fe->ops.i2c_gate_ctrl) {
ret = fe->ops.i2c_gate_ctrl(fe, 1);
if (ret < 0)
goto error;
}
ret = stv6110x_write_regs(stv6110x, 0, stv6110x->regs,
ARRAY_SIZE(stv6110x->regs));
if (ret < 0) {
dprintk(FE_ERROR, 1, "Initialization failed");
goto error;
}
if (fe->ops.i2c_gate_ctrl) {
ret = fe->ops.i2c_gate_ctrl(fe, 0);
if (ret < 0)
goto error;
}
fe->tuner_priv = stv6110x;
fe->ops.tuner_ops = stv6110x_ops;

1
drivers/media/dvb/frontends/stv6110x.h
View file

@ -26,6 +26,7 @@
struct stv6110x_config {
u8 addr;
u32 refclk;
u8 clk_div; /* divisor value for the output clock */
};
enum tuner_mode {