From patchwork Wed Jul 22 13:30:39 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Philipp Zabel X-Patchwork-Id: 11678479 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 05FDE618 for ; Wed, 22 Jul 2020 13:30:59 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id E1DC520709 for ; Wed, 22 Jul 2020 13:30:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E1DC520709 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 86A316E459; Wed, 22 Jul 2020 13:30:51 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by gabe.freedesktop.org (Postfix) with ESMTPS id AE01C6E049 for ; Wed, 22 Jul 2020 13:30:50 +0000 (UTC) Received: from dude02.hi.pengutronix.de ([2001:67c:670:100:1d::28] helo=dude02.pengutronix.de.) by metis.ext.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1jyEpd-0002o0-9D; Wed, 22 Jul 2020 15:30:49 +0200 From: Philipp Zabel To: dri-devel@lists.freedesktop.org Subject: [PATCH 5/8] drm/imx: parallel-display: use drm managed resources Date: Wed, 22 Jul 2020 15:30:39 +0200 Message-Id: <20200722133042.30140-5-p.zabel@pengutronix.de> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200722133042.30140-1-p.zabel@pengutronix.de> References: <20200722133042.30140-1-p.zabel@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::28 X-SA-Exim-Mail-From: p.zabel@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: dri-devel@lists.freedesktop.org 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: kernel@pengutronix.de Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Use drmm_kzalloc() to align encoder memory lifetime with the drm device, and use drmm_add_action_or_reset() to make sure drm_encoder_cleanup() is called before the memory is freed. Signed-off-by: Philipp Zabel --- drivers/gpu/drm/imx/parallel-display.c | 50 +++++++++++++------------- 1 file changed, 26 insertions(+), 24 deletions(-) diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c index 8232f512b9ed..182d88d7f666 100644 --- a/drivers/gpu/drm/imx/parallel-display.c +++ b/drivers/gpu/drm/imx/parallel-display.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include #include @@ -28,7 +29,6 @@ struct imx_parallel_display { struct drm_bridge bridge; struct device *dev; void *edid; - int edid_len; u32 bus_format; u32 bus_flags; struct drm_display_mode mode; @@ -259,6 +259,13 @@ static const struct drm_bridge_funcs imx_pd_bridge_funcs = { .atomic_get_output_bus_fmts = imx_pd_bridge_atomic_get_output_bus_fmts, }; +static void imx_pd_encoder_cleanup(struct drm_device *drm, void *ptr) +{ + struct drm_encoder *encoder = ptr; + + drm_encoder_cleanup(encoder); +} + static int imx_pd_register(struct drm_device *drm, struct imx_parallel_display *imxpd) { @@ -276,7 +283,13 @@ static int imx_pd_register(struct drm_device *drm, */ imxpd->connector.dpms = DRM_MODE_DPMS_OFF; - drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_NONE); + ret = drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_NONE); + if (ret) + return ret; + + ret = drmm_add_action_or_reset(drm, imx_pd_encoder_cleanup, encoder); + if (ret) + return ret; imxpd->bridge.funcs = &imx_pd_bridge_funcs; drm_bridge_attach(encoder, &imxpd->bridge, NULL, 0); @@ -310,12 +323,14 @@ static int imx_pd_bind(struct device *dev, struct device *master, void *data) struct device_node *np = dev->of_node; const u8 *edidp; struct imx_parallel_display *imxpd; + int edid_len; int ret; u32 bus_format = 0; const char *fmt; - imxpd = dev_get_drvdata(dev); - memset(imxpd, 0, sizeof(*imxpd)); + imxpd = drmm_kzalloc(drm, sizeof(*imxpd), GFP_KERNEL); + if (!imxpd) + return -ENOMEM; /* port@1 is the output port */ ret = drm_of_find_panel_or_bridge(np, 1, 0, &imxpd->panel, @@ -323,9 +338,13 @@ static int imx_pd_bind(struct device *dev, struct device *master, void *data) if (ret && ret != -ENODEV) return ret; - edidp = of_get_property(np, "edid", &imxpd->edid_len); - if (edidp) - imxpd->edid = kmemdup(edidp, imxpd->edid_len, GFP_KERNEL); + edidp = of_get_property(np, "edid", &edid_len); + if (edidp) { + imxpd->edid = drmm_kmalloc(drm, edid_len, GFP_KERNEL); + if (!imxpd->edid) + return -ENOMEM; + memcpy(imxpd->edid, edidp, edid_len); + } ret = of_property_read_string(np, "interface-pix-fmt", &fmt); if (!ret) { @@ -349,29 +368,12 @@ static int imx_pd_bind(struct device *dev, struct device *master, void *data) return 0; } -static void imx_pd_unbind(struct device *dev, struct device *master, - void *data) -{ - struct imx_parallel_display *imxpd = dev_get_drvdata(dev); - - kfree(imxpd->edid); -} - static const struct component_ops imx_pd_ops = { .bind = imx_pd_bind, - .unbind = imx_pd_unbind, }; static int imx_pd_probe(struct platform_device *pdev) { - struct imx_parallel_display *imxpd; - - imxpd = devm_kzalloc(&pdev->dev, sizeof(*imxpd), GFP_KERNEL); - if (!imxpd) - return -ENOMEM; - - platform_set_drvdata(pdev, imxpd); - return component_add(&pdev->dev, &imx_pd_ops); }