On 27 October 2016 at 17:35, Marcel Hasler <mahas...@gmail.com> wrote: > Allow setting a custom record gain for the internal AC97 codec (if > available). This can be > a value between 0 and 15, 8 is the default and should be suitable for most > users. The Windows > driver also sets this to 8 without any possibility for changing it. > > Signed-off-by: Marcel Hasler <mahas...@gmail.com> > --- > drivers/media/usb/stk1160/stk1160-ac97.c | 11 ++++++++++- > 1 file changed, 10 insertions(+), 1 deletion(-) > > diff --git a/drivers/media/usb/stk1160/stk1160-ac97.c > b/drivers/media/usb/stk1160/stk1160-ac97.c > index 6dbc39f..31bdd60d 100644 > --- a/drivers/media/usb/stk1160/stk1160-ac97.c > +++ b/drivers/media/usb/stk1160/stk1160-ac97.c > @@ -25,6 +25,11 @@ > #include "stk1160.h" > #include "stk1160-reg.h" > > +static u8 gain = 8; > + > +module_param(gain, byte, 0444); > +MODULE_PARM_DESC(gain, "Set capture gain level if AC97 codec is available > (0-15, default: 8)"); > + > static void stk1160_write_ac97(struct stk1160 *dev, u16 reg, u16 value) > { > /* Set codec register address */ > @@ -122,7 +127,11 @@ void stk1160_ac97_setup(struct stk1160 *dev) > stk1160_write_ac97(dev, 0x16, 0x0808); /* Aux volume */ > stk1160_write_ac97(dev, 0x1a, 0x0404); /* Record select */ > stk1160_write_ac97(dev, 0x02, 0x0000); /* Master volume */ > - stk1160_write_ac97(dev, 0x1c, 0x0808); /* Record gain */ > + > + /* Record gain */ > + gain = (gain > 15) ? 15 : gain; > + stk1160_info("Setting capture gain to %d.", gain);
This message doesn't add anything useful, can we drop it? > + stk1160_write_ac97(dev, 0x1c, (gain<<8) | gain); > > #ifdef DEBUG > stk1160_ac97_dump_regs(dev); > -- > 2.10.1 > -- Ezequiel GarcĂa, VanguardiaSur www.vanguardiasur.com.ar -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html