From patchwork Sun Apr 30 09:22:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Linus Walleij X-Patchwork-Id: 13227156 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B4748C7EE26 for ; Sun, 30 Apr 2023 09:22:39 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E519110E1F7; Sun, 30 Apr 2023 09:22:38 +0000 (UTC) Received: from mail-lf1-x131.google.com (mail-lf1-x131.google.com [IPv6:2a00:1450:4864:20::131]) by gabe.freedesktop.org (Postfix) with ESMTPS id A231310E092 for ; Sun, 30 Apr 2023 09:22:22 +0000 (UTC) Received: by mail-lf1-x131.google.com with SMTP id 2adb3069b0e04-4edc114c716so1902992e87.1 for ; Sun, 30 Apr 2023 02:22:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1682846540; x=1685438540; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=Pp3PRNYbx/fsurHzrjtHyOhBV0+Rw2cfHp2A04u+CvU=; b=ogQG1hefbBUDibvfB660K9VwHo/1OzVvHE9PYhoOMrc9ljBQ3pCYMW7AQs03a5VytT Oo39k1OhdlbJ8mN63PexAX76k7B7o58cm359+ZnPCpx3lP1hX1OfDrTqK7AsWDdAkgiB ctMqx+48GAYHEcbP5sfbbDIWdM+6j93MG48Qd7TJdJ/CXnbvQXvDfS03L0OPtOMeReHe ip9H5x+po165jWyRLTpHhBLgTpeszBChgkatvewFfHh8EVXCencQPduCr2c6OY0RFwfR RaoDYI3LRcfOqbM0aL1hh5bmAEoLq/6ucphw66KAEQ1Px0rNTsTS0RZc47HlH3mkJxO/ qYMg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682846540; x=1685438540; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Pp3PRNYbx/fsurHzrjtHyOhBV0+Rw2cfHp2A04u+CvU=; b=j6O9hQpJ1XwUnmgaD5c09AJaB1GzePznfJjnRPO3D+aa/XPhnZlQT9bTfdFxaIEAhX zD82TEaShiHbbQoRwA95oYN5iJ0QTswFvIqe0gBbClX8sldexefEPSXMgyqUiIBfoHtP ziTnAFObB3zljV4rptfBwiSZGC8Kp013PTOXEI4y5oxFOEAmQq5Evn1xEyijDaR74qq2 UmkeE5KNtolkdgrvWLVoXRG2qXiu3zbBWHdXvbOLeBsX63YG2KT/pT29aB4eeMDn1atg 0hd/4knolr5J78XufzIIAFk/nHnDOeWzEpaUySDJdaz7cWPWwud2yBuQplMuxDbf3cuJ ZIUg== X-Gm-Message-State: AC+VfDzuf9sjpx3j7vwaHNTQqHC8nutqVXa1SfJbLbtG5jjWiJZIqJne iipOoZUxhj6XAP/bejAX7qHNVQ== X-Google-Smtp-Source: ACHHUZ5qSx+bMQGVLRRHnfcdwsy1zCxobKTnDm6GAMGf84RnuSnGIlaEUsssFScThYQ8Ui2ipQzb4w== X-Received: by 2002:ac2:528a:0:b0:4ee:d562:5752 with SMTP id q10-20020ac2528a000000b004eed5625752mr2748859lfm.27.1682846540332; Sun, 30 Apr 2023 02:22:20 -0700 (PDT) Received: from [127.0.1.1] ([85.235.12.238]) by smtp.gmail.com with ESMTPSA id o2-20020a05651238a200b004ec62d9a7f9sm4077327lft.62.2023.04.30.02.22.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 30 Apr 2023 02:22:19 -0700 (PDT) From: Linus Walleij Date: Sun, 30 Apr 2023 11:22:17 +0200 Subject: [PATCH 2/4] fbdev/ARM: Fix up LCD MIPID GPIO usage MIME-Version: 1.0 Message-Id: <20230430-nokia770-regression-v1-2-97704e36b094@linaro.org> References: <20230430-nokia770-regression-v1-0-97704e36b094@linaro.org> In-Reply-To: <20230430-nokia770-regression-v1-0-97704e36b094@linaro.org> To: Aaro Koskinen , Janusz Krzysztofik , Tony Lindgren , Russell King , Daniel Mack , Haojian Zhuang , Robert Jarzmik , Thomas Bogendoerfer , Dmitry Torokhov , Mark Brown , Bartosz Golaszewski , Andreas Kemnade , Helge Deller , Ulf Hansson X-Mailer: b4 0.12.1 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-fbdev@vger.kernel.org, linux-mips@vger.kernel.org, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-spi@vger.kernel.org, linux-input@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The Nokia 770 is using GPIOs from the global numberspace to pass down to the LCD controller. This regresses when we let the OMAP GPIO driver use dynamic GPIO base. As this is the only user of LCD MIPID we can easily augment the driver to use a GPIO descriptor instead and resolve the issue. The platform data .shutdown() callback wasn't even used in the code, but we encode a shutdown asserting RESET in the remove() callback for completeness sake. Fixes: 92bf78b33b0b ("gpio: omap: use dynamic allocation of base") Signed-off-by: Linus Walleij --- arch/arm/mach-omap1/board-nokia770.c | 23 ++++++++++------------- drivers/video/fbdev/omap/lcd_mipid.c | 10 ++++++++++ include/linux/platform_data/lcd-mipid.h | 2 -- 3 files changed, 20 insertions(+), 15 deletions(-) diff --git a/arch/arm/mach-omap1/board-nokia770.c b/arch/arm/mach-omap1/board-nokia770.c index eb7652670447..509afcd42823 100644 --- a/arch/arm/mach-omap1/board-nokia770.c +++ b/arch/arm/mach-omap1/board-nokia770.c @@ -85,26 +85,23 @@ static struct platform_device *nokia770_devices[] __initdata = { &nokia770_kp_device, }; -static void mipid_shutdown(struct mipid_platform_data *pdata) -{ - if (pdata->nreset_gpio != -1) { - printk(KERN_INFO "shutdown LCD\n"); - gpio_set_value(pdata->nreset_gpio, 0); - msleep(120); - } -} - -static struct mipid_platform_data nokia770_mipid_platform_data = { - .shutdown = mipid_shutdown, -}; +static struct mipid_platform_data nokia770_mipid_platform_data = { }; static const struct omap_lcd_config nokia770_lcd_config __initconst = { .ctrl_name = "hwa742", }; +static struct gpiod_lookup_table nokia770_lcd_gpio_table = { + .dev_id = "lcd_mipid", + .table = { + GPIO_LOOKUP("gpio-0-15", 13, "reset", GPIO_ACTIVE_LOW), + { } + }, +}; + static void __init mipid_dev_init(void) { - nokia770_mipid_platform_data.nreset_gpio = 13; + gpiod_add_lookup_table(&nokia770_lcd_gpio_table); nokia770_mipid_platform_data.data_lines = 16; omapfb_set_lcd_config(&nokia770_lcd_config); diff --git a/drivers/video/fbdev/omap/lcd_mipid.c b/drivers/video/fbdev/omap/lcd_mipid.c index 03cff39d392d..e4a7f0b824ff 100644 --- a/drivers/video/fbdev/omap/lcd_mipid.c +++ b/drivers/video/fbdev/omap/lcd_mipid.c @@ -7,6 +7,7 @@ */ #include #include +#include #include #include #include @@ -41,6 +42,7 @@ struct mipid_device { when we can issue the next sleep in/out command */ unsigned long hw_guard_wait; /* max guard time in jiffies */ + struct gpio_desc *reset; struct omapfb_device *fbdev; struct spi_device *spi; @@ -556,6 +558,12 @@ static int mipid_spi_probe(struct spi_device *spi) return -ENOMEM; } + /* This will de-assert RESET if active */ + md->reset = gpiod_get(&spi->dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(md->reset)) + return dev_err_probe(&spi->dev, PTR_ERR(md->reset), + "no reset GPIO line\n"); + spi->mode = SPI_MODE_0; md->spi = spi; dev_set_drvdata(&spi->dev, md); @@ -574,6 +582,8 @@ static void mipid_spi_remove(struct spi_device *spi) { struct mipid_device *md = dev_get_drvdata(&spi->dev); + /* Asserts RESET */ + gpiod_set_value(md->reset, 1); mipid_disable(&md->panel); kfree(md); } diff --git a/include/linux/platform_data/lcd-mipid.h b/include/linux/platform_data/lcd-mipid.h index 63f05eb23827..4927cfc5158c 100644 --- a/include/linux/platform_data/lcd-mipid.h +++ b/include/linux/platform_data/lcd-mipid.h @@ -15,10 +15,8 @@ enum mipid_test_result { #ifdef __KERNEL__ struct mipid_platform_data { - int nreset_gpio; int data_lines; - void (*shutdown)(struct mipid_platform_data *pdata); void (*set_bklight_level)(struct mipid_platform_data *pdata, int level); int (*get_bklight_level)(struct mipid_platform_data *pdata);