From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Vrabel Subject: New 8250 device -- XR16550. Date: Fri, 24 Sep 2004 09:59:03 +0100 Sender: linux-serial-owner@vger.kernel.org Message-ID: <4153E1D7.3010201@arcom.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from webapps.arcom.com ([194.200.159.168]:19206 "EHLO webapps.arcom.com") by vger.kernel.org with ESMTP id S268582AbUIXI7E (ORCPT ); Fri, 24 Sep 2004 04:59:04 -0400 List-Id: linux-serial@vger.kernel.org To: linux-serial mailing list Hi, This adds support for the two 16550 compatible UARTs in an Exar XR16L2551 chip to the 8250 driver. They have a sleep mode like the ST16650V2s but a smaller (16 byte) Rx fifo. Index: linux-2.6-armbe/drivers/serial/8250.c =================================================================== --- linux-2.6-armbe.orig/drivers/serial/8250.c 2004-09-22 17:12:19.000000000 +0100 +++ linux-2.6-armbe/drivers/serial/8250.c 2004-09-23 17:53:37.000000000 +0100 @@ -174,6 +174,7 @@ { "RSA", 2048, 2048, UART_CAP_FIFO }, { "NS16550A", 16, 16, UART_CAP_FIFO | UART_NATSEMI }, { "XScale", 32, 32, UART_CAP_FIFO }, + { "XR16550", 16, 16, UART_CAP_FIFO | UART_CAP_SLEEP | UART_CAP_EFR }, }; static _INLINE_ unsigned int serial_in(struct uart_8250_port *up, int offset) @@ -477,8 +478,10 @@ */ if (size_fifo(up) == 64) up->port.type = PORT_16654; - else + else if(size_fifo(up) == 32) up->port.type = PORT_16650V2; + else + up->port.type = PORT_XR16550; } /* Index: linux-2.6-armbe/include/linux/serial_core.h =================================================================== --- linux-2.6-armbe.orig/include/linux/serial_core.h 2004-09-23 17:01:32.000000000 +0100 +++ linux-2.6-armbe/include/linux/serial_core.h 2004-09-23 17:03:10.000000000 +0100 @@ -37,7 +37,8 @@ #define PORT_RSA 13 #define PORT_NS16550A 14 #define PORT_XSCALE 15 -#define PORT_MAX_8250 15 /* max port ID */ +#define PORT_XR16550 16 +#define PORT_MAX_8250 16 /* max port ID */ /* * ARM specific type numbers. These are not currently guaranteed David Vrabel -- David Vrabel, Design Engineer Arcom, Clifton Road Tel: +44 (0)1223 411200 ext. 3233 Cambridge CB1 7EA, UK Web: http://www.arcom.com/