From patchwork Mon Mar 12 20:48:40 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: William Breathitt Gray X-Patchwork-Id: 10277429 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 76F9E602BD for ; Mon, 12 Mar 2018 20:48:50 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6A4E728C22 for ; Mon, 12 Mar 2018 20:48:50 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5EC7028E55; Mon, 12 Mar 2018 20:48:50 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=2.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7D6C028C22 for ; Mon, 12 Mar 2018 20:48:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932366AbeCLUss (ORCPT ); Mon, 12 Mar 2018 16:48:48 -0400 Received: from mail-yw0-f194.google.com ([209.85.161.194]:41309 "EHLO mail-yw0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932274AbeCLUsr (ORCPT ); Mon, 12 Mar 2018 16:48:47 -0400 Received: by mail-yw0-f194.google.com with SMTP id w12so6390494ywa.8; Mon, 12 Mar 2018 13:48:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=oW7qoF0vCVNAEeVV6/d5z0FY+Hgb2Bn7ueLmM0QXAqA=; b=g0P6FKq8Zw2mYvSaVLGyc6P2JH+B+rKftjlYOnnBbe+lX8g/n+ke6OtujrjAwPtmsj VobYcwzTLctDSYWQB5Or4xAdi212MYn9cYYVjDwwcTBWgYPUBJpKD9kW2WnofpKorcgV E5qGHmYtdpsKN0k24Ws42seGmuyF4HOMg2fpqEnaFXNoQ0W7J/ALEXWru0Sszy/2whoz thln/umKOpqptim1K2YczimOTkYvdNawE3nASSAVRr9iMuB+8GngxdUEYMFEGmzp11h3 SIbeDSDVtNb+xyGihJzNXg+JvqyRDuznLhPSrKtPJth21/d2ScYHOkC8J0EVia+bAZmf RfIA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=oW7qoF0vCVNAEeVV6/d5z0FY+Hgb2Bn7ueLmM0QXAqA=; b=K5Xj4k/mUtNyXHrexQuzUUvA6ozceicIx1TQOClhUe1ygHnopVEgd0+nfH8tGgi0fq uswS0vdwLrY/Mq4tXfIbp4MvNz/VHtDRT0aHuSi9Nj55ZS8eWjdWPWMtG3rce5SRQN2I YRQWWVb0m4xZhxLrsOzMTY/LkvEK37D/uLoDXTlalzi73nziaE4eDOglxcq/kg9tDKiS i6l986Atli9EtezXK9cTcJrDkCUNAY4Q7Q7txKHrXg4pJz+6HUt70ohqqsD0zrARR/z9 GIwDfDY9kFS9gSBiJ1grt0BxxCC+GprTGmsP+Pzk3xfPivZvYDtXTRGvckg7dlj2XUgt NkvQ== X-Gm-Message-State: AElRT7GrN23eKM3k0hh0xxypu7BjEWRZR3yGyrw7AHUnNgvoTo/i7Z/G IjImlsTNR4eEjqheEcMqBZ0= X-Google-Smtp-Source: AG47ELsmSdChZr1Nx8DaQtkREh/Mre9e33mMBpVGjU/vGcgjYhW2+O7TCouOUTDIH09Jnagid0aOqQ== X-Received: by 10.13.252.198 with SMTP id m189mr5358088ywf.84.1520887727006; Mon, 12 Mar 2018 13:48:47 -0700 (PDT) Received: from localhost ([72.188.97.40]) by smtp.gmail.com with ESMTPSA id r127sm3279553ywr.45.2018.03.12.13.48.46 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 12 Mar 2018 13:48:46 -0700 (PDT) From: William Breathitt Gray To: linus.walleij@linaro.org Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, William Breathitt Gray , Jonathan Cameron , Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald-Stadler Subject: [PATCH 1/8] iio: stx104: Implement get_multiple callback Date: Mon, 12 Mar 2018 16:48:40 -0400 Message-Id: <14a09900bf4642495ebe4072b9eb02769dbc4c5e.1520886945.git.vilhelm.gray@gmail.com> X-Mailer: git-send-email 2.16.2 In-Reply-To: References: Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The Apex Embedded Systems STX104 series of devices provides 4 TTL compatible lines of inputs accessed via a single 4-bit port. Since four input lines are acquired on a single port input read, the STX104 GPIO driver may improve multiple input reads by utilizing a get_multiple callback. This patch implements the stx104_gpio_get_multiple function which serves as the respective get_multiple callback. Cc: Jonathan Cameron Cc: Hartmut Knaack Cc: Lars-Peter Clausen Cc: Peter Meerwald-Stadler Signed-off-by: William Breathitt Gray --- drivers/iio/adc/stx104.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/iio/adc/stx104.c b/drivers/iio/adc/stx104.c index 17b021f33180..0662ca199eb0 100644 --- a/drivers/iio/adc/stx104.c +++ b/drivers/iio/adc/stx104.c @@ -233,6 +233,16 @@ static int stx104_gpio_get(struct gpio_chip *chip, unsigned int offset) return !!(inb(stx104gpio->base) & BIT(offset)); } +static int stx104_gpio_get_multiple(struct gpio_chip *chip, unsigned long *mask, + unsigned long *bits) +{ + struct stx104_gpio *const stx104gpio = gpiochip_get_data(chip); + + *bits = inb(stx104gpio->base); + + return 0; +} + static void stx104_gpio_set(struct gpio_chip *chip, unsigned int offset, int value) { @@ -342,6 +352,7 @@ static int stx104_probe(struct device *dev, unsigned int id) stx104gpio->chip.direction_input = stx104_gpio_direction_input; stx104gpio->chip.direction_output = stx104_gpio_direction_output; stx104gpio->chip.get = stx104_gpio_get; + stx104gpio->chip.get_multiple = stx104_gpio_get_multiple; stx104gpio->chip.set = stx104_gpio_set; stx104gpio->chip.set_multiple = stx104_gpio_set_multiple; stx104gpio->base = base[id] + 3;