From patchwork Tue Oct 19 14:45:15 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 12570125 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BA9EEC4707A for ; Tue, 19 Oct 2021 14:45:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A07086138F for ; Tue, 19 Oct 2021 14:45:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232329AbhJSOru (ORCPT ); Tue, 19 Oct 2021 10:47:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40072 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231889AbhJSOrq (ORCPT ); Tue, 19 Oct 2021 10:47:46 -0400 Received: from michel.telenet-ops.be (michel.telenet-ops.be [IPv6:2a02:1800:110:4::f00:18]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B3447C061768 for ; Tue, 19 Oct 2021 07:45:30 -0700 (PDT) Received: from ramsan.of.borg ([IPv6:2a02:1810:ac12:ed20:b4c3:ba80:54db:46f]) by michel.telenet-ops.be with bizsmtp id 7qlS2600w12AN0U06qlTRK; Tue, 19 Oct 2021 16:45:29 +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 1mcqMo-006B4h-Jl; Tue, 19 Oct 2021 16:45:26 +0200 Received: from geert by rox.of.borg with local (Exim 4.93) (envelope-from ) id 1mcqMn-00FAC1-T7; Tue, 19 Oct 2021 16:45:25 +0200 From: Geert Uytterhoeven To: Miguel Ojeda Cc: Robin van der Gracht , Rob Herring , Paul Burton , Greg Kroah-Hartman , Pavel Machek , Marek Behun , devicetree@vger.kernel.org, linux-leds@vger.kernel.org, linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH v8 16/21] auxdisplay: ht16k33: Extract ht16k33_brightness_set() Date: Tue, 19 Oct 2021 16:45:15 +0200 Message-Id: <20211019144520.3613926-17-geert@linux-m68k.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211019144520.3613926-1-geert@linux-m68k.org> References: <20211019144520.3613926-1-geert@linux-m68k.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org Extract brightness handling into a helper function, so it can be called from multiple places. Signed-off-by: Geert Uytterhoeven Reviewed-by: Robin van der Gracht --- v8: - No changes, v7: - Add Reviewed-by, v6: - No changes, v5: - No changes, v4: - No changes, v3: - Use "err" instead of "error" to be consistent with existing driver naming style, v2: - No changes. --- drivers/auxdisplay/ht16k33.c | 25 +++++++++++++++++++------ 1 file changed, 19 insertions(+), 6 deletions(-) diff --git a/drivers/auxdisplay/ht16k33.c b/drivers/auxdisplay/ht16k33.c index b50cbf7e57ba26d7..60e616c0e932cd84 100644 --- a/drivers/auxdisplay/ht16k33.c +++ b/drivers/auxdisplay/ht16k33.c @@ -113,6 +113,22 @@ static int ht16k33_display_off(struct ht16k33_priv *priv) return i2c_smbus_write_byte(priv->client, REG_DISPLAY_SETUP); } +static int ht16k33_brightness_set(struct ht16k33_priv *priv, + unsigned int brightness) +{ + int err; + + if (brightness == 0) + return ht16k33_display_off(priv); + + err = ht16k33_display_on(priv); + if (err) + return err; + + return i2c_smbus_write_byte(priv->client, + REG_BRIGHTNESS | (brightness - 1)); +} + static void ht16k33_fb_queue(struct ht16k33_priv *priv) { struct ht16k33_fbdev *fbdev = &priv->fbdev; @@ -197,13 +213,10 @@ static int ht16k33_bl_update_status(struct backlight_device *bl) if (bl->props.power != FB_BLANK_UNBLANK || bl->props.fb_blank != FB_BLANK_UNBLANK || - bl->props.state & BL_CORE_FBBLANK || brightness == 0) { - return ht16k33_display_off(priv); - } + bl->props.state & BL_CORE_FBBLANK) + brightness = 0; - ht16k33_display_on(priv); - return i2c_smbus_write_byte(priv->client, - REG_BRIGHTNESS | (brightness - 1)); + return ht16k33_brightness_set(priv, brightness); } static int ht16k33_bl_check_fb(struct backlight_device *bl, struct fb_info *fi)