On Wed, 2019-05-29 at 18:56 +0200, Tobias Klausmann wrote:
> Refactor out the common parts of stv6110x_probe() and stv6110x_attach()
> into separate functions.
>
> This provides the needed functionality to use dvb_module_probe() instead
> of dvb_attach()!
>
> v2:
> - Impovments based on comments by Sean Young
> - Fix checkpatch.pl --strict errors
trivia:
> diff --git a/drivers/media/dvb-frontends/stv6110x.c
> b/drivers/media/dvb-frontends/stv6110x.c
[]
> @@ -333,6 +333,41 @@ static void stv6110x_release(struct dvb_frontend *fe)
> kfree(stv6110x);
> }
>
> +void st6110x_init_regs(struct stv6110x_state *stv6110x)
> +{
> + u8 default_regs[] = {0x07, 0x11, 0xdc, 0x85, 0x17, 0x01, 0xe6, 0x1e};
static const u8...
> +
> + memcpy(stv6110x->regs, default_regs, 8);
memcpy(stv6110x->regs, default_regs, ARRAY_SIZE(default_regs));
> +}
> +
> +void stv6110x_setup_divider(struct stv6110x_state *stv6110x)
> +{
> + 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;
> + }
> +}
Probably more sensible (and smaller object code) written using
an automatic like:
{
int div;
switch (stv6110x->config->clk_div) {
case 8:
div = 3;
break;
case 4:
div = 2;
break;
case 2:
div = 1;
break;
case 1:
default:
div = 0;
break;
}
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, div);
}
> diff --git a/drivers/media/dvb-frontends/stv6110x_priv.h
> b/drivers/media/dvb-frontends/stv6110x_priv.h
[]
> @@ -54,11 +54,12 @@
> #define REFCLOCK_MHz (stv6110x->config->refclk /
> 1000000)
>
> struct stv6110x_state {
> + struct dvb_frontend *frontend;
> struct i2c_adapter *i2c;
> const struct stv6110x_config *config;
> u8 regs[8];
Perhaps this 8 should be a define?
