From patchwork Wed Jul 14 15:11:27 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 477105 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, 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 00446C11F83 for ; Wed, 14 Jul 2021 15:12:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DA23D613BF for ; Wed, 14 Jul 2021 15:12:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239795AbhGNPOw (ORCPT ); Wed, 14 Jul 2021 11:14:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42430 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239779AbhGNPOn (ORCPT ); Wed, 14 Jul 2021 11:14:43 -0400 Received: from andre.telenet-ops.be (andre.telenet-ops.be [IPv6:2a02:1800:120:4::f00:15]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 07CD0C0613BB for ; Wed, 14 Jul 2021 08:11:43 -0700 (PDT) Received: from ramsan.of.borg ([IPv6:2a02:1810:ac12:ed10:bcf3:b2b1:dff6:480b]) by andre.telenet-ops.be with bizsmtp id V3Bf2500C4sai0K013BfMv; Wed, 14 Jul 2021 17:11:41 +0200 Received: from rox.of.borg ([192.168.97.57]) by ramsan.of.borg with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1m3gXz-001ARW-4Y; Wed, 14 Jul 2021 17:11:39 +0200 Received: from geert by rox.of.borg with local (Exim 4.93) (envelope-from ) id 1m3gXx-00Ach2-PK; Wed, 14 Jul 2021 17:11:37 +0200 From: Geert Uytterhoeven To: Robin van der Gracht , Rob Herring , Miguel Ojeda , Paul Burton , Greg Kroah-Hartman , Pavel Machek , Marek Behun Cc: devicetree@vger.kernel.org, linux-leds@vger.kernel.org, linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH v3 16/19] auxdisplay: ht16k33: Extract frame buffer probing Date: Wed, 14 Jul 2021 17:11:27 +0200 Message-Id: <20210714151130.2531831-17-geert@linux-m68k.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210714151130.2531831-1-geert@linux-m68k.org> References: <20210714151130.2531831-1-geert@linux-m68k.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-leds@vger.kernel.org Extract all frame buffer (including backlight) probing into ht16k33_fbdev_probe(). Call ht16k33_fbdev_probe() after ht16k33_keypad_probe(), as the latter does not need any manual cleanup in the probe error path. Signed-off-by: Geert Uytterhoeven --- v3: - Pass "dev" instead of "client" to ht16k33_fbdev_probe(), - Drop local variable "node", v2: - Rebased. --- drivers/auxdisplay/ht16k33.c | 101 ++++++++++++++++++----------------- 1 file changed, 53 insertions(+), 48 deletions(-) diff --git a/drivers/auxdisplay/ht16k33.c b/drivers/auxdisplay/ht16k33.c index 928ac9722c142855..27ac167dae74bd82 100644 --- a/drivers/auxdisplay/ht16k33.c +++ b/drivers/auxdisplay/ht16k33.c @@ -394,33 +394,13 @@ static int ht16k33_keypad_probe(struct i2c_client *client, return input_register_device(keypad->dev); } -static int ht16k33_probe(struct i2c_client *client) +static int ht16k33_fbdev_probe(struct device *dev, struct ht16k33_priv *priv, + uint32_t brightness) { - int err; - uint32_t dft_brightness; - struct backlight_device *bl; + struct ht16k33_fbdev *fbdev = &priv->fbdev; struct backlight_properties bl_props; - struct ht16k33_priv *priv; - struct ht16k33_fbdev *fbdev; - struct device *dev = &client->dev; - struct device_node *node = dev->of_node; - - if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { - dev_err(dev, "i2c_check_functionality error\n"); - return -EIO; - } - - priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); - if (!priv) - return -ENOMEM; - - priv->client = client; - i2c_set_clientdata(client, priv); - fbdev = &priv->fbdev; - - err = ht16k33_initialize(priv); - if (err) - return err; + struct backlight_device *bl; + int err; /* Backlight */ memset(&bl_props, 0, sizeof(struct backlight_properties)); @@ -434,18 +414,7 @@ static int ht16k33_probe(struct i2c_client *client) return PTR_ERR(bl); } - err = of_property_read_u32(node, "default-brightness-level", - &dft_brightness); - if (err) { - dft_brightness = MAX_BRIGHTNESS; - } else if (dft_brightness > MAX_BRIGHTNESS) { - dev_warn(dev, - "invalid default brightness level: %u, using %u\n", - dft_brightness, MAX_BRIGHTNESS); - dft_brightness = MAX_BRIGHTNESS; - } - - bl->props.brightness = dft_brightness; + bl->props.brightness = brightness; ht16k33_bl_update_status(bl); /* Framebuffer (2 bytes per column) */ @@ -466,8 +435,8 @@ static int ht16k33_probe(struct i2c_client *client) goto err_fbdev_buffer; } - err = of_property_read_u32(node, "refresh-rate-hz", - &fbdev->refresh_rate); + err = of_property_read_u32(dev->of_node, "refresh-rate-hz", + &fbdev->refresh_rate); if (err) { dev_err(dev, "refresh rate not specified\n"); goto err_fbdev_info; @@ -489,18 +458,9 @@ static int ht16k33_probe(struct i2c_client *client) if (err) goto err_fbdev_info; - /* Keypad */ - if (client->irq > 0) { - err = ht16k33_keypad_probe(client, &priv->keypad); - if (err) - goto err_fbdev_unregister; - } - ht16k33_fb_queue(priv); return 0; -err_fbdev_unregister: - unregister_framebuffer(fbdev->info); err_fbdev_info: framebuffer_release(fbdev->info); err_fbdev_buffer: @@ -509,6 +469,51 @@ static int ht16k33_probe(struct i2c_client *client) return err; } +static int ht16k33_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct ht16k33_priv *priv; + uint32_t dft_brightness; + int err; + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { + dev_err(dev, "i2c_check_functionality error\n"); + return -EIO; + } + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->client = client; + i2c_set_clientdata(client, priv); + + err = ht16k33_initialize(priv); + if (err) + return err; + + err = of_property_read_u32(dev->of_node, "default-brightness-level", + &dft_brightness); + if (err) { + dft_brightness = MAX_BRIGHTNESS; + } else if (dft_brightness > MAX_BRIGHTNESS) { + dev_warn(dev, + "invalid default brightness level: %u, using %u\n", + dft_brightness, MAX_BRIGHTNESS); + dft_brightness = MAX_BRIGHTNESS; + } + + /* Keypad */ + if (client->irq > 0) { + err = ht16k33_keypad_probe(client, &priv->keypad); + if (err) + return err; + } + + /* Frame Buffer Display */ + return ht16k33_fbdev_probe(dev, priv, dft_brightness); +} + static int ht16k33_remove(struct i2c_client *client) { struct ht16k33_priv *priv = i2c_get_clientdata(client);