From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3B065C433F4 for ; Tue, 28 Aug 2018 11:27:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A9FEC2087C for ; Tue, 28 Aug 2018 11:27:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=synopsys.com header.i=@synopsys.com header.b="G2j6AlXr" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A9FEC2087C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=synopsys.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727768AbeH1PSk (ORCPT ); Tue, 28 Aug 2018 11:18:40 -0400 Received: from smtprelay4.synopsys.com ([198.182.47.9]:33112 "EHLO smtprelay.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727201AbeH1PSk (ORCPT ); Tue, 28 Aug 2018 11:18:40 -0400 Received: from mailhost.synopsys.com (mailhost1.synopsys.com [10.12.238.239]) by smtprelay.synopsys.com (Postfix) with ESMTP id 7D15624E23D2; Tue, 28 Aug 2018 04:27:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=synopsys.com; s=mail; t=1535455648; bh=aN8zzZQ0BA2ndzTYT0yp7g0qhluSBS46Vc+R4A/Cl8U=; h=From:To:Cc:Subject:Date:From; b=G2j6AlXrkeMCw3DZEhpm+moqe2kfzG2jxGK7QhgVQ7/TORSjQgpDB1tR0AA2EszZY KJpQtlEcoLZFR+vypuzd/z0TAGQan+WL3TNmus+GNhEBhTEbz3klYUK8KHcE6YujDH nrFhix+o6BZEzd1HnkaL+iW1ABxSIi9VV/fWNhnslhUh+UuapSTFn6IUy/bUUsNxBx Txjcl2AEHo1vZ8CMg3uI7Nx3AU9QvnFhc3Z2CcKvOpFA69XC29MleB3fMus/06MwF2 d+tbEqaBezWy/r1+lKza8AREwUp3CMsgp6F56KjjRXO9Jf43/uXx7kBMYLLBFuvN2+ fZrQoc85zefxA== Received: from paltsev-e7480.internal.synopsys.com (paltsev-e7480.internal.synopsys.com [10.121.3.36]) by mailhost.synopsys.com (Postfix) with ESMTP id E83B65F93; Tue, 28 Aug 2018 04:27:24 -0700 (PDT) From: Eugeniy Paltsev To: linux-snps-arc@lists.infradead.org, linux-gpio@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Vineet Gupta , Alexey Brodkin , Linus Walleij , Rob Herring , devicetree@vger.kernel.org, Mark Rutland , Eugeniy Paltsev Subject: [PATCH v2 0/2] GPIO: add single-register GPIO via CREG driver Date: Tue, 28 Aug 2018 14:27:19 +0300 Message-Id: <20180828112721.28178-1-Eugeniy.Paltsev@synopsys.com> X-Mailer: git-send-email 2.14.4 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add single-register MMIO GPIO driver for complex cases where only several fields in register belong to GPIO lines and each GPIO line owns a field with different length and on/off value. Here is the example: 31 11 8 7 5 0 < bit number | | | | | | [ not used | gpio-1 | shift-1 | gpio-0 | shift-0 ] < 32 bit MMIO ^ ^ register (3 bit) (2 bit) | | | | | write 0x2 == set output to "1" (on) | write 0x3 == set output to "0" (off) | write 0x1 == set output to "1" (on) write 0x4 == set output to "0" (off) This is different from gpio-reg, gpio-mmio and gpio-74xx-mmio: * They all don't support cases when GPIO output register have more than one bit per GPIO line. * They don't support holes in MMIO register. * They don't support cases when GPIO lines have different on/off values. This driver supports GPIOs via CREG on various Synopsys SoCs/boards. Eugeniy Paltsev (2): GPIO: add single-register GPIO via CREG driver dt-bindings: Document the Synopsys GPIO via CREG bindings .../devicetree/bindings/gpio/snps,creg-gpio.txt | 49 +++++ MAINTAINERS | 6 + drivers/gpio/Kconfig | 9 + drivers/gpio/Makefile | 1 + drivers/gpio/gpio-creg-snps.c | 242 +++++++++++++++++++++ 5 files changed, 307 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/snps,creg-gpio.txt create mode 100644 drivers/gpio/gpio-creg-snps.c -- 2.14.4