On 2016/6/30 17:54, Andy Shevchenko wrote:
> On Thu, 2016-06-30 at 12:38 +0300, Andy Shevchenko wrote:
>> On Thu, 2016-06-30 at 09:27 +0800, Kefeng Wang wrote:
>>> Add ACPI identifier for UART on Hisilicon Hip05 soc, be careful
>>> that it is not 16550 compatibal.
>>>
>>> Meanwhile, set dw8250_serial_out32 to keep consistent between
>>> serial_out
>>> and serial_in in ACPI.
>>>
>>> Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
>>> ---
>>> drivers/tty/serial/8250/8250_dw.c | 13 +++++++++++--
>>> 1 file changed, 11 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/drivers/tty/serial/8250/8250_dw.c
>>> b/drivers/tty/serial/8250/8250_dw.c
>>> index 65f3da7..096431b 100644
>>> --- a/drivers/tty/serial/8250/8250_dw.c
>>> +++ b/drivers/tty/serial/8250/8250_dw.c
>>> @@ -272,6 +272,12 @@ static bool dw8250_idma_filter(struct dma_chan
>>> *chan, void *param)
>>> return param == chan->device->dev->parent;
>>> }
>>>
>>> +/* non 16550 compatible id list*/
>>> +static const struct acpi_device_id non_16550_id_list[] = {
>>> + { "HISI0031", 0 },
>>> + { },
>>> +};
>>> +
>>
>> On first glance it looks redundant, see below.
>
> Oh, wait, this is still valid, but the better solution is to use device
> properties for the rest except yours!
Do you mean using something like
static struct property_entry dw8250_properties[] = {
PROPERTY_ENTRY_U32("reg-io-width", 4),
PROPERTY_ENTRY_U32("reg-shift", 2),
PROPERTY_ENTRY_BOOL("snps,uart-16550-compatible"),
{ },
};
then use platform_device_add_properties to add it to the device(16500 compatible),
but for hisi, use another property_entry without PROPERTY_ENTRY_BOOL("snps,uart-16550-compatible")?
Not clear about using device properties.
>
> I will prepare patch later this week or at the beginning of next week if
> you are in hurry, otherwise I would postpone this a bit (anyway it will
> not make v4.8 cycle).
>
Thanks, hope that it will come out soon.
BRs,
Kefeng
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