From: shc_work@mail.ru (Alexander Shiyan)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 4/7] tty/serial: at91: use mctrl_gpio helpers
Date: Tue, 18 Feb 2014 19:04:42 +0400 [thread overview]
Message-ID: <20140218190442.b5f5668e02e2dda0bf45d0b4@mail.ru> (raw)
In-Reply-To: <1392656247-3351-5-git-send-email-richard.genoud@gmail.com>
On Mon, 17 Feb 2014 17:57:24 +0100
Richard Genoud <richard.genoud@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@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
> + .dev_id = "atmel_usart",
> + .table = {
> + GPIO_LOOKUP("pioA", 21, "rts", GPIO_ACTIVE_LOW),
> + { },
> + },
> };
...
--
Alexander Shiyan <shc_work@mail.ru>
next prev parent reply other threads:[~2014-02-18 15:04 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-17 16:57 [PATCH v3 0/7] tty/serial: Add helpers to use GPIOs to control modem lines and implement atmel_serial.c Richard Genoud
2014-02-17 16:57 ` [PATCH v3 1/7] tty/serial: Add GPIOLIB helpers for controlling modem lines Richard Genoud
2014-02-17 18:37 ` Alexander Shiyan
2014-02-18 9:59 ` Richard Genoud
2014-02-18 15:26 ` Alexander Shiyan
2014-02-20 11:20 ` Richard Genoud
2014-02-17 16:57 ` [PATCH v3 2/7] tty/serial: at91: use dev_err instead of printk Richard Genoud
2014-02-17 16:57 ` [PATCH v3 3/7] tty/serial: at91: remove unused open/close hooks Richard Genoud
2014-02-17 16:57 ` [PATCH v3 4/7] tty/serial: at91: use mctrl_gpio helpers Richard Genoud
2014-02-18 15:04 ` Alexander Shiyan [this message]
2014-02-18 15:09 ` Richard Genoud
2014-02-17 16:57 ` [PATCH v3 5/7] ARM: at91: gpio: implement get_direction Richard Genoud
2014-02-24 14:42 ` Linus Walleij
2014-02-17 16:57 ` [PATCH v3 6/7] pinctrl: at91: " Richard Genoud
2014-02-24 14:44 ` Linus Walleij
2014-02-24 14:56 ` Richard Genoud
2014-02-25 9:34 ` Linus Walleij
2014-02-17 16:57 ` [PATCH v3 7/7] tty/serial: at91: add interrupts for modem control lines Richard Genoud
2014-02-17 17:53 ` [PATCH v3 0/7] tty/serial: Add helpers to use GPIOs to control modem lines and implement atmel_serial.c Alexander Shiyan
2014-02-18 9:59 ` Richard Genoud
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