Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752676AbZIGJwd (ORCPT ); Mon, 7 Sep 2009 05:52:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752386AbZIGJwd (ORCPT ); Mon, 7 Sep 2009 05:52:33 -0400 Received: from mail.free-electrons.com ([88.191.76.200]:58661 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752008AbZIGJwc (ORCPT ); Mon, 7 Sep 2009 05:52:32 -0400 From: Albin Tonnerre To: avictor.za@gmail.com Cc: linux-kernel@vger.kernel.org, haavard.skinnemoen@atmel.com, nicolas.ferre@atmel.com, Albin Tonnerre Subject: [PATCH v2] Add poll_get_char and poll_put_char uart_ops to atmel_serial. Date: Mon, 7 Sep 2009 11:52:50 +0200 Message-Id: <1252317170-9782-1-git-send-email-albin.tonnerre@free-electrons.com> X-Mailer: git-send-email 1.6.3.3 In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1640 Lines: 58 This patch allows using KGDB over the console with the atmel_serial driver. Signed-off-by: Albin Tonnerre --- changes: Use register access macros instead of __raw_readl/writel drivers/serial/atmel_serial.c | 22 ++++++++++++++++++++++ 1 files changed, 22 insertions(+), 0 deletions(-) diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c index 607d43a..c562883 100644 --- a/drivers/serial/atmel_serial.c +++ b/drivers/serial/atmel_serial.c @@ -1213,6 +1213,24 @@ static int atmel_verify_port(struct uart_port *port, struct serial_struct *ser) return ret; } +#ifdef CONFIG_CONSOLE_POLL +static int atmel_poll_get_char(struct uart_port *port) +{ + while (!(UART_GET_CSR(port) & ATMEL_US_RXRDY)) + barrier(); + + return UART_GET_CHAR(port); +} + +static void atmel_poll_put_char(struct uart_port *port, unsigned char ch) +{ + while (!(UART_GET_CSR(port) & ATMEL_US_TXRDY)) + barrier(); + + UART_PUT_CHAR(port, ch); +} +#endif + static struct uart_ops atmel_pops = { .tx_empty = atmel_tx_empty, .set_mctrl = atmel_set_mctrl, @@ -1232,6 +1250,10 @@ static struct uart_ops atmel_pops = { .config_port = atmel_config_port, .verify_port = atmel_verify_port, .pm = atmel_serial_pm, +#ifdef CONFIG_CONSOLE_POLL + .poll_get_char = atmel_poll_get_char, + .poll_put_char = atmel_poll_put_char, +#endif }; /* -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/