/**
* wm831x_reg_write: Write a single WM831x register.
*
* @wm831x: Device to write to.
* @reg: Register to write to.
* @val: Value to write.
*/
int wm831x_reg_write(struct wm831x *wm831x, unsigned short reg,
unsigned short val)
{
int ret;
mutex_lock(&wm831x->io_lock);
ret = wm831x_write(wm831x, reg, 2, &val);
mutex_unlock(&wm831x->io_lock);
return ret;
}
/**
* wm831x_set_bits: Set the value of a bitfield in a WM831x register
*
* @wm831x: Device to write to.
* @reg: Register to write to.
* @mask: Mask of bits to set.
* @val: Value to set (unshifted)
*/
int wm831x_set_bits(struct wm831x *wm831x, unsigned short reg,
unsigned short mask, unsigned short val)
{
int ret;
u16 r;
mutex_lock(&wm831x->io_lock);
ret = wm831x_read(wm831x, reg, 2, &r);
if (ret < 0)
goto out;
r &= ~mask;
r |= val & mask;
ret = wm831x_write(wm831x, reg, 2, &r);
out:
mutex_unlock(&wm831x->io_lock);
return ret;
}
