Re: [Xen-devel] [PATCH v8 4/6] xen/arm: Add the new OMAP UART driver.

[Chen Baozi <baozich@xxxxxxxxx>]

On Aug 22, 2013, at 6:20 PM, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:

> On Tue, 2013-08-13 at 19:14 +0800, Chen Baozi wrote:
>> TI OMAP UART introduces some features such as register access modes, which
>> makes its configuration and interrupt handling differs from 8250 compatible
>> UART. Thus, we seperate this driver from ns16550's implementation.
>> 
>> Signed-off-by: Chen Baozi <baozich@xxxxxxxxx>
> 
> Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
> 
>> @@ -11,6 +11,7 @@ CFLAGS += -marm
>> 
>> HAS_PL011 := y
>> HAS_EXYNOS4210 := y
>> +HAS_OMAP := y
> 
> All three of these would be better with a _UART suffix IMHO, the
> HAS_OMAP makes it particularly obvious...
> 
> Would you mind making this change (in a follow up patch)?

No problems, :)

Thanks,

Baozi

> 
> [...]
>> +static int __init omap_uart_irq(struct serial_port *port)
>> +{
>> +    struct omap_uart *uart = port->uart;
>> +
>> +    return ((uart->irq.irq > 0) ? uart->irq.irq : -1);
>> +}
>> +[..]
>> +static struct uart_driver __read_mostly omap_uart_driver = {
> [...]
>> +    .irq = omap_uart_irq,
>> +    .dt_irq_get = omap_uart_dt_irq,
> [...]
> 
> This is really a question for Julien: Does a driver which is DT only
> need to provide the irq hook or is dt_irq sufficient?
> 
> Ian.
> 
> 


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