From patchwork Sat Apr 27 12:52:16 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Enrico Weigelt, metux IT consult" X-Patchwork-Id: 1091943 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=sparclinux-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=metux.net Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 44rrTs0NYfz9sNB for ; Sat, 27 Apr 2019 22:54:25 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726341AbfD0MyN (ORCPT ); Sat, 27 Apr 2019 08:54:13 -0400 Received: from mout.kundenserver.de ([212.227.126.133]:46579 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727354AbfD0Mxd (ORCPT ); Sat, 27 Apr 2019 08:53:33 -0400 Received: from orion.localdomain ([77.2.90.210]) by mrelayeu.kundenserver.de (mreue009 [212.227.15.167]) with ESMTPSA (Nemesis) id 1N79q8-1ghy553AGC-017Rst; Sat, 27 Apr 2019 14:53:03 +0200 From: "Enrico Weigelt, metux IT consult" To: linux-kernel@vger.kernel.org Cc: gregkh@linuxfoundation.org, andrew@aj.id.au, andriy.shevchenko@linux.intel.com, macro@linux-mips.org, vz@mleia.com, slemieux.tyco@gmail.com, khilman@baylibre.com, liviu.dudau@arm.com, sudeep.holla@arm.com, lorenzo.pieralisi@arm.com, davem@davemloft.net, jacmet@sunsite.dk, linux@prisktech.co.nz, matthias.bgg@gmail.com, linux-mips@vger.kernel.org, linux-serial@vger.kernel.org, linux-ia64@vger.kernel.org, linux-amlogic@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org Subject: [PATCH 35/41] drivers: tty: serial: 8250: add mapsize to platform data Date: Sat, 27 Apr 2019 14:52:16 +0200 Message-Id: <1556369542-13247-36-git-send-email-info@metux.net> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1556369542-13247-1-git-send-email-info@metux.net> References: <1556369542-13247-1-git-send-email-info@metux.net> X-Provags-ID: V03:K1:JcK0nmXUqvVZov6FpygbFCYx2SBIMbt8YBo1Pyu7lLXpjQoFRY+ pUU91A2VFsC0opVj58fPkR0Q6FJXQi2dkc/wvSXJs1UuyFbz9fA4rXDWaSqNdJmI+Ni3NVN GCHT5mxv7iA219z7s0oyXnMLdcGAYrX/sQa9g9+0osWcxqkU8TBbfxVPdIH8z0lkkec4VUA Jy3EMpSULncwPlRSUSCNg== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1; V03:K0:HKE131FklXQ=:N+5TupvitkXMK24q5/jyxA sIX3ic5BD+uHPAGs20GJwkwPl9UDpk0TIanYdXumBoGIe0pn8xQHfMNAGWo6dzwFRYczrf7xW TxJABWtuVu+JiQ10VmrYJ6qbGD6m4TbE/uBc0upnH9JxQ1cVsfzzBmwiGXmmAaK657CfdpoPS Fz7U84teAYYbICi2O4GD/aLJ8uzK2AiOYExJtogutwoUfYQhEeqnt1MAK5B8+inbvVsZudb+l JJHjzlpoU/Oc+93FvVVMaymuIzy9f5R5gZGyofQ18Ch3DkihSAI67zUaYRbcl98qsSoKBF0qU 0Bi3tP98ckrPEa8aT6/eEbWNDmQIaMq18HS/MVAYgP0Spig/t1UW2ix047NzAc3r2ovU57cD/ m3113f332KKSzj3AKd4QtXe9A+c95IFcsbX/8ZcEtEUh4OjJicZ9FooqDctilf0RHzaAa2R0C rBL1UlQkiaGPBiXr/zXerWVeQj+YNsmUc6K/CvV8fuooCj8sZm9wrLZ8jVV/8DBx0EmiKK0FQ FMksN9EPcLIzrmxsrW7WAaj8ObKHty46EJiN+qpvZ7NIRTVKtyKeC7eYev77pxyv6ynBQwIto XvolrpgZ5uald3Dm9wAVwKn9K+v7AhEHQZv/NkEVcxJbA6C5VQ4xHu1nfwLeN8MtF/mnGnkCL 7eovd4m1Pa0fyY2AFdvo5Xvee3L7sL7797X+E77dYhJ60wioVIWdRHlMcJMcL86pG4RtHQe3Y 1TtyyEi0bqAfCKemGdUTrRo5E1LDoLRshCvoXw== Sender: sparclinux-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: sparclinux@vger.kernel.org Adding a mapsize field for the 8250 port platform data struct, so we can now set the resource size (eg. *1) and don't need funny runtime detections like serial8250_port_size() anymore. For now, serial8250_port_size() is called everytime we need the io resource size. That function checks which chip we actually have and returns the appropriate size. This approach is a bit clumpsy and not entirely easy to understand, and it's a violation of layers :p Obviously, that information cannot change after the driver init, so we can safely do that probing once on driver init and just use the stored value later. *1) arch/mips/alchemy/common/platform.c Signed-off-by: Enrico Weigelt --- drivers/tty/serial/8250/8250_core.c | 1 + include/linux/serial_8250.h | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c index e441221..71a398b 100644 --- a/drivers/tty/serial/8250/8250_core.c +++ b/drivers/tty/serial/8250/8250_core.c @@ -814,6 +814,7 @@ static int serial8250_probe(struct platform_device *dev) uart.port.iotype = p->iotype; uart.port.flags = p->flags; uart.port.mapbase = p->mapbase; + uart.port.mapsize = p->mapsize; uart.port.hub6 = p->hub6; uart.port.private_data = p->private_data; uart.port.type = p->type; diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h index 5a655ba..8b8183a 100644 --- a/include/linux/serial_8250.h +++ b/include/linux/serial_8250.h @@ -22,6 +22,7 @@ struct plat_serial8250_port { unsigned long iobase; /* io base address */ void __iomem *membase; /* ioremap cookie or NULL */ resource_size_t mapbase; /* resource base */ + resource_size_t mapsize; /* resource size */ unsigned int irq; /* interrupt number */ unsigned long irqflags; /* request_irq flags */ unsigned int uartclk; /* UART clock rate */