From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754784Ab1AFW1g (ORCPT ); Thu, 6 Jan 2011 17:27:36 -0500 Received: from kroah.org ([198.145.64.141]:55680 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754503Ab1AFWXw (ORCPT ); Thu, 6 Jan 2011 17:23:52 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Cosmin Cojocar , Greg Kroah-Hartman Subject: [PATCH 23/36] serial: omap-serial: Add support for kernel debugger Date: Thu, 6 Jan 2011 14:23:12 -0800 Message-Id: <1294352605-31906-23-git-send-email-gregkh@suse.de> X-Mailer: git-send-email 1.7.3.2 In-Reply-To: <20110106215404.GA30624@kroah.com> References: <20110106215404.GA30624@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Cosmin Cojocar The kgdb invokes the poll_put_char and poll_get_char when communicating with the host. This patch also changes the initialization order because the kgdb will check at the very beginning, if there is a valid serial driver. Signed-off-by: Cosmin Cojocar Signed-off-by: Greg Kroah-Hartman --- drivers/serial/Makefile | 2 +- drivers/serial/omap-serial.c | 38 ++++++++++++++++++++++++++++++++------ 2 files changed, 33 insertions(+), 7 deletions(-) diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile index f9b26df..8ea92e9 100644 --- a/drivers/serial/Makefile +++ b/drivers/serial/Makefile @@ -80,6 +80,7 @@ obj-$(CONFIG_SERIAL_NETX) += netx-serial.o obj-$(CONFIG_SERIAL_OF_PLATFORM) += of_serial.o obj-$(CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL) += nwpserial.o obj-$(CONFIG_SERIAL_KS8695) += serial_ks8695.o +obj-$(CONFIG_SERIAL_OMAP) += omap-serial.o obj-$(CONFIG_KGDB_SERIAL_CONSOLE) += kgdboc.o obj-$(CONFIG_SERIAL_QE) += ucc_uart.o obj-$(CONFIG_SERIAL_TIMBERDALE) += timbuart.o @@ -89,6 +90,5 @@ obj-$(CONFIG_SERIAL_ALTERA_UART) += altera_uart.o obj-$(CONFIG_SERIAL_VT8500) += vt8500_serial.o obj-$(CONFIG_SERIAL_MRST_MAX3110) += mrst_max3110.o obj-$(CONFIG_SERIAL_MFD_HSU) += mfd.o -obj-$(CONFIG_SERIAL_OMAP) += omap-serial.o obj-$(CONFIG_SERIAL_IFX6X60) += ifx6x60.o obj-$(CONFIG_SERIAL_PCH_UART) += pch_uart.o diff --git a/drivers/serial/omap-serial.c b/drivers/serial/omap-serial.c index 14365f7..54239f5 100644 --- a/drivers/serial/omap-serial.c +++ b/drivers/serial/omap-serial.c @@ -866,12 +866,6 @@ serial_omap_type(struct uart_port *port) return up->name; } -#ifdef CONFIG_SERIAL_OMAP_CONSOLE - -static struct uart_omap_port *serial_omap_console_ports[4]; - -static struct uart_driver serial_omap_reg; - #define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE) static inline void wait_for_xmitr(struct uart_omap_port *up) @@ -905,6 +899,34 @@ static inline void wait_for_xmitr(struct uart_omap_port *up) } } +#ifdef CONFIG_CONSOLE_POLL + +static void serial_omap_poll_put_char(struct uart_port *port, unsigned char ch) +{ + struct uart_omap_port *up = (struct uart_omap_port *)port; + wait_for_xmitr(up); + serial_out(up, UART_TX, ch); +} + +static int serial_omap_poll_get_char(struct uart_port *port) +{ + struct uart_omap_port *up = (struct uart_omap_port *)port; + unsigned int status = serial_in(up, UART_LSR); + + if (!(status & UART_LSR_DR)) + return NO_POLL_CHAR; + + return serial_in(up, UART_RX); +} + +#endif /* CONFIG_CONSOLE_POLL */ + +#ifdef CONFIG_SERIAL_OMAP_CONSOLE + +static struct uart_omap_port *serial_omap_console_ports[4]; + +static struct uart_driver serial_omap_reg; + static void serial_omap_console_putchar(struct uart_port *port, int ch) { struct uart_omap_port *up = (struct uart_omap_port *)port; @@ -1022,6 +1044,10 @@ static struct uart_ops serial_omap_pops = { .request_port = serial_omap_request_port, .config_port = serial_omap_config_port, .verify_port = serial_omap_verify_port, +#ifdef CONFIG_CONSOLE_POLL + .poll_put_char = serial_omap_poll_put_char, + .poll_get_char = serial_omap_poll_get_char, +#endif }; static struct uart_driver serial_omap_reg = { -- 1.7.3.2