[PATCH v3 4/7] tty/serial: at91: use mctrl_gpio helpers

[Richard Genoud]

2014-02-18 16:04 GMT+01:00 Alexander Shiyan <shc_work at mail.ru>:
> On Mon, 17 Feb 2014 17:57:24 +0100
> Richard Genoud <richard.genoud at gmail.com> wrote:
>
>> On sam9x5, dedicated CTS (and RTS) pins are unusable together with the
>> LCDC, the EMAC, or the MMC because they share the same line.
>>
>> Moreover, the USART controller doesn't handle DTR/DSR/DCD/RI signals,
>> so we have to control them via GPIO.
>>
>> This patch permits to use GPIOs to control the CTS/RTS/DTR/DSR/DCD/RI
>> signals.
>>
>> Signed-off-by: Richard Genoud <richard.genoud at gmail.com>
> ...
>> diff --git a/arch/arm/mach-at91/at91rm9200_devices.c b/arch/arm/mach-at91/at91rm9200_devices.c
>> index 605add05af7e..6dd386e3d9fe 100644
>> --- a/arch/arm/mach-at91/at91rm9200_devices.c
>> +++ b/arch/arm/mach-at91/at91rm9200_devices.c
> ...
>> @@ -961,7 +961,14 @@ static struct resource uart0_resources[] = {
>>  static struct atmel_uart_data uart0_data = {
>>       .use_dma_tx     = 1,
>>       .use_dma_rx     = 1,
>> -     .rts_gpio       = -EINVAL,
>> +};
>> +
>> +struct gpiod_lookup_table uart0_gpios_table = {
>
> static
arg ! I missed this one !
good catch !

>> +     .dev_id = "atmel_usart",
>> +     .table = {
>> +             GPIO_LOOKUP("pioA", 21, "rts", GPIO_ACTIVE_LOW),
>> +             { },
>> +     },
>>  };
> ...
>
> --
> Alexander Shiyan <shc_work at mail.ru>



-- 
for me, ck means con kolivas and not calvin klein... does it mean I'm a geek ?