From patchwork Sat Oct 6 12:41:02 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Russell King X-Patchwork-Id: 1557311 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id E4892DF238 for ; Sat, 6 Oct 2012 12:41:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756115Ab2JFMlM (ORCPT ); Sat, 6 Oct 2012 08:41:12 -0400 Received: from caramon.arm.linux.org.uk ([78.32.30.218]:47235 "EHLO caramon.arm.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755805Ab2JFMlL (ORCPT ); Sat, 6 Oct 2012 08:41:11 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=arm.linux.org.uk; s=caramon; h=Date:Sender:Message-Id:Subject:Cc:To:From:References:In-Reply-To; bh=W6Dr/NKSXt0XXAZ7TnuHtaTRAgGEObVHts/0bqUdG3w=; b=Dy9Ch57D8v8JUxmIiinFk5KuiTL1NDzKl/hNFWWmPtjowdjafO6QlcMhWQuFsrUrjMTPafbPcFnc3vZPIQ1iNYoeTbndxa3GBhWKuM2rE1TO7XJuCgQOVxnLHr2i5eFdbVpEkpyawvSxIYaqU7JC5piek4RwARM99EXm9s5pDpk=; Received: from e0022681537dd.dyn.arm.linux.org.uk ([2002:4e20:1eda:1:222:68ff:fe15:37dd]:39595 helo=rmk-PC.arm.linux.org.uk) by caramon.arm.linux.org.uk with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.76) (envelope-from ) id 1TKTgl-000878-GF; Sat, 06 Oct 2012 13:41:03 +0100 Received: from rmk by rmk-PC.arm.linux.org.uk with local (Exim 4.76) (envelope-from ) id 1TKTgk-0002mj-L2; Sat, 06 Oct 2012 13:41:03 +0100 In-Reply-To: <20121006123803.GD15246@n2100.arm.linux.org.uk> References: <20121006123803.GD15246@n2100.arm.linux.org.uk> From: Russell King To: Tony Lindgren , Alan Cox , Greg Kroah-Hartman Cc: linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, linux-serial@vger.kernel.org Subject: [RFC 06/24] SERIAL: omap: allow hardware assisted rts/cts modes to be disabled Message-Id: Date: Sat, 06 Oct 2012 13:41:02 +0100 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org There is nothing which clears the auto RTS/CTS bits, so once hardware flow control gets enabled, there's no possibility to disable it. So, clear these bits when CRTSCTS is cleared. Signed-off-by: Russell King --- drivers/tty/serial/omap-serial.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c index 654dd78..f2535fe 100644 --- a/drivers/tty/serial/omap-serial.c +++ b/drivers/tty/serial/omap-serial.c @@ -917,6 +917,13 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios, serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); serial_out(up, UART_EFR, up->efr); serial_out(up, UART_LCR, cval); + } else { + /* Disable AUTORTS and AUTOCTS */ + up->efr &= ~(UART_EFR_CTS | UART_EFR_RTS); + + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); + serial_out(up, UART_EFR, up->efr); + serial_out(up, UART_LCR, cval); } serial_omap_set_mctrl(&up->port, up->port.mctrl);