Re: [PATCH v2 9/9] rc: nuvoton-cir: Add support for writing wakeup samples via sysfs filter callback

[James Hogan <james@xxxxxxxxxxxxx>]

On Sunday 16 March 2014 10:39:39 Antti Seppälä wrote:
> > +static int nvt_write_wakeup_codes(struct rc_dev *dev,
> > +                                 const u8 *wakeup_sample_buf, int count)
> > +{
> > +       int i = 0;
> > +       u8 reg, reg_learn_mode;
> > +       unsigned long flags;
> > +       struct nvt_dev *nvt = dev->priv;
> > +
> > +       nvt_dbg_wake("writing wakeup samples");
> > +
> > +       reg = nvt_cir_wake_reg_read(nvt, CIR_WAKE_IRCON);
> > +       reg_learn_mode = reg & ~CIR_WAKE_IRCON_MODE0;
> > +       reg_learn_mode |= CIR_WAKE_IRCON_MODE1;
> > +
> > +       /* Lock the learn area to prevent racing with wake-isr */
> > +       spin_lock_irqsave(&nvt->nvt_lock, flags);
> > +
> > +       /* Enable fifo writes */
> > +       nvt_cir_wake_reg_write(nvt, reg_learn_mode, CIR_WAKE_IRCON);
> > +
> > +       /* Clear cir wake rx fifo */
> > +       nvt_clear_cir_wake_fifo(nvt);
> > +
> > +       if (count > WAKE_FIFO_LEN) {
> > +               nvt_dbg_wake("HW FIFO too small for all wake samples");
> > +               count = WAKE_FIFO_LEN;
> > +       }
> 
> Now that the encoders support partial encoding the above check against
> WAKE_FIFO_LEN never triggers and can be removed.

Yep, good point

Thanks
James

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