From patchwork Wed May 25 19:06:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 577143 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6FC8CC433EF for ; Wed, 25 May 2022 19:08:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343496AbiEYTIc (ORCPT ); Wed, 25 May 2022 15:08:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49572 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344165AbiEYTH5 (ORCPT ); Wed, 25 May 2022 15:07:57 -0400 Received: from relay5-d.mail.gandi.net (relay5-d.mail.gandi.net [IPv6:2001:4b98:dc4:8::225]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A14B71147D; Wed, 25 May 2022 12:07:18 -0700 (PDT) Received: (Authenticated sender: paul.kocialkowski@bootlin.com) by mail.gandi.net (Postfix) with ESMTPSA id 078A81C0018; Wed, 25 May 2022 19:07:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1653505634; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=jrJBpd53EwRHOW8oKwni9Fj5kJav/l0uqe9FmQA66wc=; b=EoYDlW6IwHACFNPN1t3bKZkra403Lm8wskPyCcFEf5O8rDa9fXVSl3moHOaTalsmPkd5qJ ILds/01Tid90vqQ5tbU3TVy1KqCp0DzTQ6DIF+c+D4azIseC24x98UdE9osLZE3i1TvtX2 QckR4pUOO/UG61Mtx6W2bk1CBLbU5iskAi1yZ/LITSyel8fQtAEsKJAoG2bII9CMWiZ1B1 /x5b8fu+YK5VKDYZC1tSASs8E2SraKU40BtDBByjiWo4aRpZoL9Z4gbZe/tRUX4zLA98jw Em9lirF6rhHaNjNR2UsVHYOOAr5/YLH295z7XZWrzo8GwzyTwra84zprZHQ8/Q== From: Paul Kocialkowski To: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev Cc: Yong Deng , Paul Kocialkowski , Mauro Carvalho Chehab , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Laurent Pinchart , Maxime Ripard , Thomas Petazzoni Subject: [PATCH v5 40/44] media: sun6i-csi: Add support for MIPI CSI-2 to the bridge code Date: Wed, 25 May 2022 21:06:13 +0200 Message-Id: <20220525190617.696344-41-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220525190617.696344-1-paul.kocialkowski@bootlin.com> References: <20220525190617.696344-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Introduce MIPI CSI-2 support to the bridge with a new port, source and hardware configuration helper. Signed-off-by: Paul Kocialkowski Acked-by: Jernej Skrabec --- .../platform/sunxi/sun6i-csi/sun6i_csi.h | 1 + .../sunxi/sun6i-csi/sun6i_csi_bridge.c | 46 +++++++++++++++++-- .../sunxi/sun6i-csi/sun6i_csi_bridge.h | 1 + 3 files changed, 44 insertions(+), 4 deletions(-) diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h index fd6e98b66f12..e611bdd6e9b2 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h @@ -20,6 +20,7 @@ enum sun6i_csi_port { SUN6I_CSI_PORT_PARALLEL = 0, + SUN6I_CSI_PORT_MIPI_CSI2 = 1, }; struct sun6i_csi_buffer { diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.c index ec3e04353106..27289d904d5c 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.c +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.c @@ -226,7 +226,7 @@ static void sun6i_csi_bridge_disable(struct sun6i_csi_device *csi_dev) } static void -sun6i_csi_bridge_configure_interface(struct sun6i_csi_device *csi_dev) +sun6i_csi_bridge_configure_parallel(struct sun6i_csi_device *csi_dev) { struct device *dev = csi_dev->dev; struct regmap *regmap = csi_dev->regmap; @@ -316,6 +316,25 @@ sun6i_csi_bridge_configure_interface(struct sun6i_csi_device *csi_dev) regmap_write(regmap, SUN6I_CSI_IF_CFG_REG, value); } +static void +sun6i_csi_bridge_configure_mipi_csi2(struct sun6i_csi_device *csi_dev) +{ + struct regmap *regmap = csi_dev->regmap; + u32 value = SUN6I_CSI_IF_CFG_IF_MIPI; + u32 field; + + sun6i_csi_bridge_format(csi_dev, NULL, &field); + + if (field == V4L2_FIELD_INTERLACED || + field == V4L2_FIELD_INTERLACED_TB || + field == V4L2_FIELD_INTERLACED_BT) + value |= SUN6I_CSI_IF_CFG_SRC_TYPE_INTERLACED; + else + value |= SUN6I_CSI_IF_CFG_SRC_TYPE_PROGRESSIVE; + + regmap_write(regmap, SUN6I_CSI_IF_CFG_REG, value); +} + static void sun6i_csi_bridge_configure_format(struct sun6i_csi_device *csi_dev) { struct regmap *regmap = csi_dev->regmap; @@ -367,9 +386,16 @@ static void sun6i_csi_bridge_configure_format(struct sun6i_csi_device *csi_dev) regmap_write(regmap, SUN6I_CSI_CH_CFG_REG, value); } -static void sun6i_csi_bridge_configure(struct sun6i_csi_device *csi_dev) +static void sun6i_csi_bridge_configure(struct sun6i_csi_device *csi_dev, + struct sun6i_csi_bridge_source *source) { - sun6i_csi_bridge_configure_interface(csi_dev); + struct sun6i_csi_bridge *bridge = &csi_dev->bridge; + + if (source == &bridge->source_parallel) + sun6i_csi_bridge_configure_parallel(csi_dev); + else + sun6i_csi_bridge_configure_mipi_csi2(csi_dev); + sun6i_csi_bridge_configure_format(csi_dev); } @@ -381,6 +407,7 @@ static int sun6i_csi_bridge_s_stream(struct v4l2_subdev *subdev, int on) struct sun6i_csi_bridge *bridge = &csi_dev->bridge; struct media_entity *bridge_entity = &bridge->subdev.entity; struct device *dev = csi_dev->dev; + struct sun6i_csi_bridge_source *source; struct v4l2_subdev *source_subdev; struct media_link *link; /* Initialize to 0 to use both in disable label (ret != 0) and off. */ @@ -398,6 +425,11 @@ static int sun6i_csi_bridge_s_stream(struct v4l2_subdev *subdev, int on) source_subdev = media_entity_to_v4l2_subdev(link->source->entity); + if (source_subdev == bridge->source_parallel.subdev) + source = &bridge->source_parallel; + else + source = &bridge->source_mipi_csi2; + if (!on) { v4l2_subdev_call(source_subdev, video, s_stream, 0); goto disable; @@ -415,7 +447,7 @@ static int sun6i_csi_bridge_s_stream(struct v4l2_subdev *subdev, int on) /* Configure */ - sun6i_csi_bridge_configure(csi_dev); + sun6i_csi_bridge_configure(csi_dev, source); sun6i_csi_capture_configure(csi_dev); /* State Update */ @@ -607,6 +639,7 @@ sun6i_csi_bridge_notifier_bound(struct v4l2_async_notifier *notifier, struct sun6i_csi_bridge_async_subdev *bridge_async_subdev = container_of(async_subdev, struct sun6i_csi_bridge_async_subdev, async_subdev); + struct sun6i_csi_bridge *bridge = &csi_dev->bridge; struct sun6i_csi_bridge_source *source = bridge_async_subdev->source; bool enabled; @@ -614,6 +647,9 @@ sun6i_csi_bridge_notifier_bound(struct v4l2_async_notifier *notifier, case SUN6I_CSI_PORT_PARALLEL: enabled = true; break; + case SUN6I_CSI_PORT_MIPI_CSI2: + enabled = !bridge->source_parallel.expected; + break; default: break; } @@ -760,6 +796,8 @@ int sun6i_csi_bridge_setup(struct sun6i_csi_device *csi_dev) sun6i_csi_bridge_source_setup(csi_dev, &bridge->source_parallel, SUN6I_CSI_PORT_PARALLEL, parallel_mbus_types); + sun6i_csi_bridge_source_setup(csi_dev, &bridge->source_mipi_csi2, + SUN6I_CSI_PORT_MIPI_CSI2, NULL); ret = v4l2_async_nf_register(v4l2_dev, notifier); if (ret) { diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.h index cb3b27af4607..ee592a14b9c5 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.h +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.h @@ -46,6 +46,7 @@ struct sun6i_csi_bridge { struct mutex lock; /* Mbus format lock. */ struct sun6i_csi_bridge_source source_parallel; + struct sun6i_csi_bridge_source source_mipi_csi2; }; /* Helpers */