From patchwork Thu Aug 15 00:48:49 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brian Masney X-Patchwork-Id: 11094825 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 78D421395 for ; Thu, 15 Aug 2019 00:51:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 682E3219AC for ; Thu, 15 Aug 2019 00:51:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 58C1328867; Thu, 15 Aug 2019 00:51:33 +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_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 0113D219AC for ; Thu, 15 Aug 2019 00:51:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=W0U6ogC3xKNCKw68gv3DneQ7VBmBic4BqZxd9VXC0mI=; b=MxaKBSRu1azcjA bGnBUt4GpV3pLsn4T8G2z90Et5gDqfJhdxihBUb4H8VX4u0kiHs8eKO2GHI6LLS7VOOTSKTxj/Om+ droHBstjskBw89Trba+cyuYklGVtP6hewXMnVpqxyhjRvCdiY3XhZUOhOB4qTpZ1Q5/TGrYGFG3nZ JYy7N/lv7Gco4QlxPtGyjzYDzowYoABZXZbIz4KfIbv4TOzdGjCQ2rSMnrGH9k50o4x9JNbCnx798 6dpXmlk8s3bdxRIotQqUmORkGVygK4jPXm4w/YcdM3OCwRvJUloZcXcX7HZwqqwof37COi9hKDv4B 9zv4FHD2RcVrgB4vKN3w==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hy3zI-0007Ch-9s; Thu, 15 Aug 2019 00:51:32 +0000 Received: from onstation.org ([52.200.56.107]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hy3x6-0004bS-1R for linux-arm-kernel@lists.infradead.org; Thu, 15 Aug 2019 00:49:17 +0000 Received: from localhost.localdomain (c-98-239-145-235.hsd1.wv.comcast.net [98.239.145.235]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: masneyb) by onstation.org (Postfix) with ESMTPSA id C4EEE3EA18; Thu, 15 Aug 2019 00:49:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=onstation.org; s=default; t=1565830155; bh=DC5vyeikJaV2JnfcQHCSqPpy7s9WUUfxIAq5L9wP3LQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vjNJnlZ8n/UZaPOd7acB6r2zozVALV/w0H9lqBa1P0XLgtR4Q+Zujaw5Hn7jkRNoj rUf/jsrnmCF2mU3kjVTQxl3A0854aZ0MRGCX0rhU1DmJPlLfoNHk+vAQZuFDBaXba3 LXlEaTrh9oHiy/f6XnfwufapRSZ8iT+ztXoC6t2w= From: Brian Masney To: bjorn.andersson@linaro.org, robh+dt@kernel.org, agross@kernel.org, a.hajda@samsung.com, narmstrong@baylibre.com, robdclark@gmail.com, sean@poorly.run Subject: [PATCH RFC 06/11] drm/bridge: analogix-anx78xx: add support for avdd33 regulator Date: Wed, 14 Aug 2019 20:48:49 -0400 Message-Id: <20190815004854.19860-7-masneyb@onstation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190815004854.19860-1-masneyb@onstation.org> References: <20190815004854.19860-1-masneyb@onstation.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190814_174916_152444_99FDEA04 X-CRM114-Status: GOOD ( 14.54 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, devicetree@vger.kernel.org, jernej.skrabec@siol.net, jonas@kwiboo.se, airlied@linux.ie, linux-arm-msm@vger.kernel.org, linus.walleij@linaro.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Laurent.pinchart@ideasonboard.com, daniel@ffwll.ch, enric.balletbo@collabora.com, freedreno@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Add support for the avdd33 regulator to the analogix-anx78xx driver. Note that the regulator is currently enabled during driver probe and disabled when the driver is removed. This is currently how the downstream MSM kernel sources do this. Let's not merge this upstream for the mean time until I get the external display fully working on the Nexus 5 and then I can submit proper support then that powers down this regulator in the power off function. Signed-off-by: Brian Masney Reviewed-by: Linus Walleij --- drivers/gpu/drm/bridge/analogix-anx78xx.c | 33 +++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/drivers/gpu/drm/bridge/analogix-anx78xx.c b/drivers/gpu/drm/bridge/analogix-anx78xx.c index 8daee6b1fa88..48adf010816c 100644 --- a/drivers/gpu/drm/bridge/analogix-anx78xx.c +++ b/drivers/gpu/drm/bridge/analogix-anx78xx.c @@ -48,6 +48,7 @@ static const u8 anx78xx_i2c_addresses[] = { struct anx78xx_platform_data { struct regulator *dvdd10; + struct regulator *avdd33; struct gpio_desc *gpiod_hpd; struct gpio_desc *gpiod_pd; struct gpio_desc *gpiod_reset; @@ -707,10 +708,42 @@ static int anx78xx_start(struct anx78xx *anx78xx) return err; } +static void anx78xx_disable_regulator_action(void *_data) +{ + struct anx78xx_platform_data *pdata = _data; + + regulator_disable(pdata->avdd33); +} + static int anx78xx_init_pdata(struct anx78xx *anx78xx) { struct anx78xx_platform_data *pdata = &anx78xx->pdata; struct device *dev = &anx78xx->client->dev; + int err; + + /* 3.3V digital core power regulator */ + pdata->avdd33 = devm_regulator_get(dev, "avdd33"); + if (IS_ERR(pdata->avdd33)) { + err = PTR_ERR(pdata->avdd33); + if (err != -EPROBE_DEFER) + DRM_ERROR("avdd33 regulator not found\n"); + + return err; + } + + err = regulator_enable(pdata->avdd33); + if (err) { + DRM_ERROR("Failed to enable avdd33 regulator: %d\n", err); + return err; + } + + err = devm_add_action(dev, anx78xx_disable_regulator_action, + pdata); + if (err < 0) { + dev_err(dev, "Failed to setup regulator cleanup action %d\n", + err); + return err; + } /* 1.0V digital core power regulator */ pdata->dvdd10 = devm_regulator_get(dev, "dvdd10");