From patchwork Tue Jul 17 23:14:46 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Janusz Krzysztofik X-Patchwork-Id: 10531479 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 61033601D2 for ; Wed, 18 Jul 2018 07:29:15 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4A234290E8 for ; Wed, 18 Jul 2018 07:29:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3EB1E290F2; Wed, 18 Jul 2018 07:29:15 +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=-5.2 required=2.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, FREEMAIL_FROM, MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 9354C290E8 for ; Wed, 18 Jul 2018 07:29:14 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 75E416E81F; Wed, 18 Jul 2018 07:28:12 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-lj1-x244.google.com (mail-lj1-x244.google.com [IPv6:2a00:1450:4864:20::244]) by gabe.freedesktop.org (Postfix) with ESMTPS id CA5D46E09F for ; Tue, 17 Jul 2018 23:15:07 +0000 (UTC) Received: by mail-lj1-x244.google.com with SMTP id u7-v6so2407233lji.3 for ; Tue, 17 Jul 2018 16:15:07 -0700 (PDT) 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=qxJYpWidCfKa9iYVekeWO6dAh9gWrR/YyGHbbCX1psE=; b=o4oJI17rNf5G1Ns3isgDwNsf8dSoKrMPmvg+C6j7v5FtliJo++jfxzzd8zzhWFEi5p gjbd59FhOLuRdKkFFKRA6ikAfiag6SnaYq9OcIibJpC/cEuruqKRq45wlZbO/RzQf4EI +WkwS95Z0wR2HS+TQhJVkYcd9V5bmxUGyvmXzCUx/jCwxPWHFkw30mOLmE7/TeTksGDr CYy2KIUrkpVAJ77XuK6sHXA+Un39UscXpvGNlRPVfH7rs740j4cIZ/bouTKi/xbAMrrL abOLXqD6JJewKgqN3bOeS0l+qHbonCQphkJ9lhlrufIdstSfRY6pLzE0NuH3TKpqmEzi IfMQ== X-Gm-Message-State: AOUpUlF+SVB+jmIEFAn9wNFi8vIWPMCcddycRKPitx2RK6uivjOnPyGq MfqamICuLs8WMLd9Md1pAfk= X-Google-Smtp-Source: AAOMgpfpRbQVTAxkk+8MxMp5mbBaWh7aJhRee/Ubtb0OfGpX9uZazXx/ALbAkpId+Yvq1ObEPq0lGw== X-Received: by 2002:a2e:998e:: with SMTP id w14-v6mr1434604lji.7.1531869306199; Tue, 17 Jul 2018 16:15:06 -0700 (PDT) Received: from z50.lan (93-181-165-181.internetia.net.pl. [93.181.165.181]) by smtp.gmail.com with ESMTPSA id n24-v6sm350827ljc.7.2018.07.17.16.15.04 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 17 Jul 2018 16:15:05 -0700 (PDT) From: Janusz Krzysztofik To: Tony Lindgren Subject: [PATCH v2 1/3 v2] video: fbdev: omapfb: lcd_ams_delta: use GPIO lookup table Date: Wed, 18 Jul 2018 01:14:46 +0200 Message-Id: <20180717231448.14958-2-jmkrzyszt@gmail.com> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20180717231448.14958-1-jmkrzyszt@gmail.com> References: <20180518210954.29044-1-jmkrzyszt@gmail.com> <20180717231448.14958-1-jmkrzyszt@gmail.com> X-Mailman-Approved-At: Wed, 18 Jul 2018 07:28:02 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mtd@lists.infradead.org, Miquel Raynal , Aaro Koskinen , Richard Weinberger , Gregory CLEMENT , Janusz Krzysztofik , Marek Vasut , Andy Shevchenko , Tomi Valkeinen , Shreeya Patel , Arvind Yadav , Arnd Bergmann , Bartlomiej Zolnierkiewicz , Boris Brezillon , Krzysztof Halasa , linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Brian Norris , David Woodhouse MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Now as Amstrad Delta board - the only user of this driver - provides GPIO lookup tables, switch from GPIO numbers to GPIO descriptors and use the table to locate required GPIO pins. Declare static variables for storing GPIO descriptors and replace gpio_ function calls with their gpiod_ equivalents. Move GPIO lookup to the driver probe function so device initialization can be deferred instead of aborted if a GPIO pin is not yet available. Pin naming used by the driver should be followed while respective GPIO lookup table is initialized by a board init code. Cc: Bartlomiej Zolnierkiewicz Signed-off-by: Janusz Krzysztofik --- Changelog: v2: Remove problematic error code conversion no longer needed if used on top of commit d08605a64e67 ("ARM: OMAP1: ams-delta: move late devices back to init_machine") already in linux-omap and commit 8853daf3b4ac ("gpiolib: Defer on non-DT find_chip_by_name() failure") already in linux-next Dependency on commit 8853daf3b4ac ("gpiolib: Defer on non-DT find_chip_by_name() failure") is not critical for clean build or run, it only prevents from unexpected future changes to driver initialization order durin device_initall. drivers/video/fbdev/omap/lcd_ams_delta.c | 55 +++++++++++++------------------- 1 file changed, 22 insertions(+), 33 deletions(-) diff --git a/drivers/video/fbdev/omap/lcd_ams_delta.c b/drivers/video/fbdev/omap/lcd_ams_delta.c index e8c748a0dfe2..cddbd00cbf9f 100644 --- a/drivers/video/fbdev/omap/lcd_ams_delta.c +++ b/drivers/video/fbdev/omap/lcd_ams_delta.c @@ -24,11 +24,10 @@ #include #include #include +#include #include -#include #include -#include #include "omapfb.h" @@ -41,6 +40,8 @@ /* LCD class device section */ static int ams_delta_lcd; +static struct gpio_desc *gpiod_vblen; +static struct gpio_desc *gpiod_ndisp; static int ams_delta_lcd_set_power(struct lcd_device *dev, int power) { @@ -99,41 +100,17 @@ static struct lcd_ops ams_delta_lcd_ops = { /* omapfb panel section */ -static const struct gpio _gpios[] = { - { - .gpio = AMS_DELTA_GPIO_PIN_LCD_VBLEN, - .flags = GPIOF_OUT_INIT_LOW, - .label = "lcd_vblen", - }, - { - .gpio = AMS_DELTA_GPIO_PIN_LCD_NDISP, - .flags = GPIOF_OUT_INIT_LOW, - .label = "lcd_ndisp", - }, -}; - -static int ams_delta_panel_init(struct lcd_panel *panel, - struct omapfb_device *fbdev) -{ - return gpio_request_array(_gpios, ARRAY_SIZE(_gpios)); -} - -static void ams_delta_panel_cleanup(struct lcd_panel *panel) -{ - gpio_free_array(_gpios, ARRAY_SIZE(_gpios)); -} - static int ams_delta_panel_enable(struct lcd_panel *panel) { - gpio_set_value(AMS_DELTA_GPIO_PIN_LCD_NDISP, 1); - gpio_set_value(AMS_DELTA_GPIO_PIN_LCD_VBLEN, 1); + gpiod_set_value(gpiod_ndisp, 1); + gpiod_set_value(gpiod_vblen, 1); return 0; } static void ams_delta_panel_disable(struct lcd_panel *panel) { - gpio_set_value(AMS_DELTA_GPIO_PIN_LCD_VBLEN, 0); - gpio_set_value(AMS_DELTA_GPIO_PIN_LCD_NDISP, 0); + gpiod_set_value(gpiod_vblen, 0); + gpiod_set_value(gpiod_ndisp, 0); } static struct lcd_panel ams_delta_panel = { @@ -154,8 +131,6 @@ static struct lcd_panel ams_delta_panel = { .pcd = 0, .acb = 37, - .init = ams_delta_panel_init, - .cleanup = ams_delta_panel_cleanup, .enable = ams_delta_panel_enable, .disable = ams_delta_panel_disable, }; @@ -166,9 +141,23 @@ static struct lcd_panel ams_delta_panel = { static int ams_delta_panel_probe(struct platform_device *pdev) { struct lcd_device *lcd_device = NULL; -#ifdef CONFIG_LCD_CLASS_DEVICE int ret; + gpiod_vblen = devm_gpiod_get(&pdev->dev, "vblen", GPIOD_OUT_LOW); + if (IS_ERR(gpiod_vblen)) { + ret = PTR_ERR(gpiod_vblen); + dev_err(&pdev->dev, "VBLEN GPIO request failed (%d)\n", ret); + return ret; + } + + gpiod_ndisp = devm_gpiod_get(&pdev->dev, "ndisp", GPIOD_OUT_LOW); + if (IS_ERR(gpiod_ndisp)) { + ret = PTR_ERR(gpiod_ndisp); + dev_err(&pdev->dev, "NDISP GPIO request failed (%d)\n", ret); + return ret; + } + +#ifdef CONFIG_LCD_CLASS_DEVICE lcd_device = lcd_device_register("omapfb", &pdev->dev, NULL, &ams_delta_lcd_ops);