Ben Dooks wrote:
> On Mon, Jan 25, 2010 at 04:15:09PM +0100, Wolfram Sang wrote:
>>>>>
>>>>> -static void __devinit mpc_i2c_setclock_52xx(struct device_node *node,
>>>>> - struct mpc_i2c *i2c,
>>>>> - u32 clock, u32 prescaler)
>>>>> +static void __devinit mpc_i2c_setup_52xx(struct device_node *node,
>>>>> + struct mpc_i2c *i2c,
>>>>> + u32 clock, u32 prescaler)
>>>>> {
>>>>> int ret, fdr;
>>>>>
>>>>> + if (clock == -1) {
>>>> Could we use 0 for 'no_clock'? This would make the above statement simply
>>> "0" is already used to maintain backward compatibility setting a safe
>>> divider.
>> Ah, now I see:
>>
>> 'clock == -1' means 'preserve clocks' (and is checked here in mpc_i2c_setup_52xx())
>> 'clock == 0' means 'safe divider' (and is checked in mpc_i2c_get_fdr_52xx())
>
> hmm, sounds like a job for a #define or similar.
See v2 of this patch.
Wolfgang.
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