From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Authentication-Results: smtp.codeaurora.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=monstr-eu.20150623.gappssmtp.com header.i=@monstr-eu.20150623.gappssmtp.com header.b="ypDK0gxm" DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 982E9607B4 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=xilinx.com Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752320AbeFFMlr (ORCPT + 25 others); Wed, 6 Jun 2018 08:41:47 -0400 Received: from mail-wr0-f196.google.com ([209.85.128.196]:33643 "EHLO mail-wr0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751920AbeFFMlo (ORCPT ); Wed, 6 Jun 2018 08:41:44 -0400 X-Google-Smtp-Source: ADUXVKItV3zMbOwnBaknaPg9TpR69FEvwpY8KFnWa4wPiuwy7Rd7cWh7tFMvRGOc4ACVRO0nWNH5Fg== From: Michal Simek To: linux-kernel@vger.kernel.org, monstr@monstr.eu, gnomes@lxorguk.ukuu.org.uk, Alexander Graf , shubhraj@xilinx.com, robh@kernel.org Cc: Jiri Slaby , linux-serial@vger.kernel.org, Greg Kroah-Hartman , linux-arm-kernel@lists.infradead.org Subject: [RFC PATCH v2 0/6] serial: uartps: Add run time support for more IPs than hardcoded 2 Date: Wed, 6 Jun 2018 14:41:33 +0200 Message-Id: X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, this series is trying to address discussion I had with Alan in past https://patchwork.kernel.org/patch/9738445/ and also with Rob in v1 https://lkml.org/lkml/2018/4/26/551. The first 5 patches are preparation patches to have the last patch as small as possible to focus on changes there. Cases without DT aliases are not solved in this series but one function was shared in RFC v1. The purpose of this series to get feedback on solution where every driver instance allocate at run time own uart_driver. For example this is how it works. uart0 on higher alias serial0 = &uart1; serial100 = &uart0; ~# ls -la /dev/ttyPS* crw------- 1 root root 252, 0 Jun 6 12:19 /dev/ttyPS0 crw--w---- 1 root root 253, 100 Jan 1 1970 /dev/ttyPS100 Thanks, Michal Changes in v2: - new patch - it can be sent separately too - Remove nr field logic - new patch - it can be sent separately too - new patch - it can be sent separately too - new patch - it can be sent separately too - Register one uart_driver with unique minor at probe time Michal Simek (6): serial: uartps: Do not initialize field to zero again serial: uartps: Move register to probe based on run time detection serial: uartps: Do not use static struct uart_driver out of probe() serial: uartps: Move alias reading higher in probe() serial: uartps: Fill struct uart_driver in probe() serial: uartps: Remove CDNS_UART_NR_PORTS macro drivers/tty/serial/xilinx_uartps.c | 126 ++++++++++++++++++++----------------- 1 file changed, 68 insertions(+), 58 deletions(-) -- 1.9.1