From patchwork Fri Jan 15 20:01:26 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 12023961 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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,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 85315C433E6 for ; Fri, 15 Jan 2021 20:04:14 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 35EC323A56 for ; Fri, 15 Jan 2021 20:04:14 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 35EC323A56 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.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=VKbA4f8+ggnon2VrRl6ITWABlDh0yaHK4FdNNfwWFC4=; b=hRTLkumsE0bh9KsKb8p8qmiIV Wti8CAcKuQVnRdMDsxWejpal5pA9e9ifQIXBirmsFVmtUuRZw+2fxBm3/v+/LpjOrRxduGW2zIrwr xZN3XP8emsnOfvRJb/6uKn0O+X0QyeLxfbxfUhohsUL7QHfh/ZkPJP2LZuAo+kgvKbIip0w4GHb5j b5CfLeC5D9gMUPn7xxvmtUGuTnzSxnxkYZXBbrB008CT8IMTKJp6/Lu86FALl1ud4BHSRwuWtJ0QS G0uSFFAcX5TkOdIPxXgXX7+deKPFm52fj5ojLqlFcZ2oku3cNEOqF8yfGqgKbR1B7cAwYpkK7ZwD/ In9qk9ryw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0VII-0002TV-B6; Fri, 15 Jan 2021 20:02:02 +0000 Received: from relay5-d.mail.gandi.net ([217.70.183.197]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0VIC-0002RR-Kv for linux-arm-kernel@lists.infradead.org; Fri, 15 Jan 2021 20:01:57 +0000 X-Originating-IP: 93.29.109.196 Received: from localhost.localdomain (196.109.29.93.rev.sfr.net [93.29.109.196]) (Authenticated sender: paul.kocialkowski@bootlin.com) by relay5-d.mail.gandi.net (Postfix) with ESMTPSA id 1EE0E1C0006; Fri, 15 Jan 2021 20:01:53 +0000 (UTC) From: Paul Kocialkowski To: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, devel@driverdev.osuosl.org, linux-sunxi@googlegroups.com Subject: [PATCH v5 01/16] docs: phy: Add a part about PHY mode and submode Date: Fri, 15 Jan 2021 21:01:26 +0100 Message-Id: <20210115200141.1397785-2-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> References: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210115_150156_850587_735EE812 X-CRM114-Status: GOOD ( 11.94 ) 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: Jernej Skrabec , Dafna Hirschfeld , Philipp Zabel , Jonathan Corbet , Thomas Petazzoni , Greg Kroah-Hartman , Helen Koike , Vinod Koul , Maxime Ripard , Kishon Vijay Abraham I , Paul Kocialkowski , Chen-Yu Tsai , Rob Herring , Hans Verkuil , Ezequiel Garcia , Yong Deng , Sakari Ailus , Mauro Carvalho Chehab , kevin.lhopital@hotmail.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Besides giving pointers to the relevant functions for PHY mode and submode configuration, this clarifies the need to set them before powering on the PHY. Signed-off-by: Paul Kocialkowski Reviewed-by: Maxime Ripard --- Documentation/driver-api/phy/phy.rst | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/Documentation/driver-api/phy/phy.rst b/Documentation/driver-api/phy/phy.rst index 8fc1ce0bb905..6cbc72707a49 100644 --- a/Documentation/driver-api/phy/phy.rst +++ b/Documentation/driver-api/phy/phy.rst @@ -195,3 +195,21 @@ DeviceTree Binding The documentation for PHY dt binding can be found @ Documentation/devicetree/bindings/phy/phy-bindings.txt + +PHY Mode and Submode +==================== + +Once a reference to a PHY is obtained by a controller, the PHY can be configured +to a PHY mode and submode. PHY modes are described in the `phy_mode` enum while +submodes are specific to the selected PHY mode. + +Mode and submode configuration is done by calling:: + + int phy_set_mode_ext(struct phy *phy, enum phy_mode mode, int submode); + +If no submode is to be configured, users can call:: + + int phy_set_mode(struct phy *phy, enum phy_mode mode); + +The PHY mode and submode must not be configured after the PHY has already been +powered on. From patchwork Fri Jan 15 20:01:27 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 12023971 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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 A23F8C433E6 for ; Fri, 15 Jan 2021 20:04:23 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 23C8C23B04 for ; Fri, 15 Jan 2021 20:04:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 23C8C23B04 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.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=d3CIb9x+BnCI23NO7GVvwPfPJVuj5nxPOdxkpoCYyb8=; b=SbF8SiX/2vJnZv6ddfnXtGRhj r3mORFr/ewh0QRLYu/BUDxU9QdwD4vP0+TWwueOuWOgHkMB+sMxqANZcaErBGCYguhKPrYewZUvTl X/8LMH3S3oDlcgWEjgcZVVYqcjHAR9ek5rrnlnbjzbZ2fksTHX1bjiIstEYsLGBV4xYcLGFfpUA49 XhOzDjpO/4/AIREXW2/D0vnoGdL6Ek+BGnB042VXQVPNEQyKkOMdTfy2nkpvFfiDOHNTEOeSG6/kj d5LX3D8kjTxYddWcNxWeZTyLVzGHKhknH+BG4gA0+3RPjeUOyVa1u6PI9EeMWo8iCOqPuRpOTuJaZ khPKlc1+g==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0VIK-0002UL-Ra; Fri, 15 Jan 2021 20:02:04 +0000 Received: from relay5-d.mail.gandi.net ([217.70.183.197]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0VIE-0002Rv-IU for linux-arm-kernel@lists.infradead.org; Fri, 15 Jan 2021 20:01:59 +0000 X-Originating-IP: 93.29.109.196 Received: from localhost.localdomain (196.109.29.93.rev.sfr.net [93.29.109.196]) (Authenticated sender: paul.kocialkowski@bootlin.com) by relay5-d.mail.gandi.net (Postfix) with ESMTPSA id 9C5D61C0005; Fri, 15 Jan 2021 20:01:55 +0000 (UTC) From: Paul Kocialkowski To: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, devel@driverdev.osuosl.org, linux-sunxi@googlegroups.com Subject: [PATCH v5 02/16] phy: Distinguish between Rx and Tx for MIPI D-PHY with submodes Date: Fri, 15 Jan 2021 21:01:27 +0100 Message-Id: <20210115200141.1397785-3-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> References: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210115_150158_789936_3ECD2428 X-CRM114-Status: GOOD ( 14.51 ) 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: Jernej Skrabec , Dafna Hirschfeld , Philipp Zabel , Jonathan Corbet , Thomas Petazzoni , Greg Kroah-Hartman , Helen Koike , Vinod Koul , Maxime Ripard , Kishon Vijay Abraham I , Paul Kocialkowski , Chen-Yu Tsai , Rob Herring , Hans Verkuil , Ezequiel Garcia , Yong Deng , Sakari Ailus , Mauro Carvalho Chehab , kevin.lhopital@hotmail.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org As some D-PHY controllers support both Rx and Tx mode, we need a way for users to explicitly request one or the other. For instance, Rx mode can be used along with MIPI CSI-2 while Tx mode can be used with MIPI DSI. Introduce new MIPI D-PHY PHY submodes to use with PHY_MODE_MIPI_DPHY. The default (zero value) is kept to Tx so only the rkisp1 driver, which uses D-PHY in Rx mode, needs to be adapted. Signed-off-by: Paul Kocialkowski Acked-by: Helen Koike --- drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c | 3 ++- include/linux/phy/phy-mipi-dphy.h | 13 +++++++++++++ 2 files changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c index 2e5b57e3aedc..cab261644102 100644 --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c @@ -948,7 +948,8 @@ static int rkisp1_mipi_csi2_start(struct rkisp1_isp *isp, phy_mipi_dphy_get_default_config(pixel_clock, isp->sink_fmt->bus_width, sensor->lanes, cfg); - phy_set_mode(sensor->dphy, PHY_MODE_MIPI_DPHY); + phy_set_mode_ext(cdev->dphy, PHY_MODE_MIPI_DPHY, + PHY_MIPI_DPHY_SUBMODE_RX); phy_configure(sensor->dphy, &opts); phy_power_on(sensor->dphy); diff --git a/include/linux/phy/phy-mipi-dphy.h b/include/linux/phy/phy-mipi-dphy.h index a877ffee845d..0f57ef46a8b5 100644 --- a/include/linux/phy/phy-mipi-dphy.h +++ b/include/linux/phy/phy-mipi-dphy.h @@ -6,6 +6,19 @@ #ifndef __PHY_MIPI_DPHY_H_ #define __PHY_MIPI_DPHY_H_ +/** + * enum phy_mipi_dphy_submode - MIPI D-PHY sub-mode + * + * A MIPI D-PHY can be used to transmit or receive data. + * Since some controllers can support both, the direction to enable is specified + * with the PHY sub-mode. Transmit is assumed by default with phy_set_mode. + */ + +enum phy_mipi_dphy_submode { + PHY_MIPI_DPHY_SUBMODE_TX = 0, + PHY_MIPI_DPHY_SUBMODE_RX, +}; + /** * struct phy_configure_opts_mipi_dphy - MIPI D-PHY configuration set * From patchwork Fri Jan 15 20:01:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 12023973 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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 44AFDC433DB for ; Fri, 15 Jan 2021 20:04:26 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 E642323A56 for ; Fri, 15 Jan 2021 20:04:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E642323A56 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.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=i27c0lZOe2Zii/CbAjJ92+5x2GzOeqzVx82yCnDkSx4=; b=FzJe51dMtST2mCH3O3o0M78Pu SnDDJJzh0IiX1XiW2wsqEQSByK2SAOI/abynmD1LViVihDU2LSWmICTto8pX4xTISbplKSl63puxP lidjtFmycnBK9Fh8CmRlmpDyn6nkiwBINBeKAFy/g3zX7d7ToIWU2V7Ah/YEAtokcfAVrm80cEUYU 4fCEH+0vMPUOiOYesrJ5KbWWG8aAb+01dtQbpz/PBJNkJxYnR0aloAQfpU9FznwTO0ZgAeeVy/32Y XKjChWYfXtJqvDwLZ7JAH30eR0MRZw7u/D/mDsPRd3kmLmK/kEHK2qn/ZyN0EAtk6hBsQ8+T/aPbX qAq7442yA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0VIT-0002YH-Lu; Fri, 15 Jan 2021 20:02:13 +0000 Received: from relay5-d.mail.gandi.net ([217.70.183.197]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0VIG-0002SJ-Q3 for linux-arm-kernel@lists.infradead.org; Fri, 15 Jan 2021 20:02:03 +0000 X-Originating-IP: 93.29.109.196 Received: from localhost.localdomain (196.109.29.93.rev.sfr.net [93.29.109.196]) (Authenticated sender: paul.kocialkowski@bootlin.com) by relay5-d.mail.gandi.net (Postfix) with ESMTPSA id C1D7C1C0009; Fri, 15 Jan 2021 20:01:57 +0000 (UTC) From: Paul Kocialkowski To: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, devel@driverdev.osuosl.org, linux-sunxi@googlegroups.com Subject: [PATCH v5 03/16] phy: allwinner: phy-sun6i-mipi-dphy: Support D-PHY Rx mode for MIPI CSI-2 Date: Fri, 15 Jan 2021 21:01:28 +0100 Message-Id: <20210115200141.1397785-4-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> References: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210115_150201_097164_84A8FB89 X-CRM114-Status: GOOD ( 19.76 ) 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: Jernej Skrabec , Dafna Hirschfeld , Philipp Zabel , Jonathan Corbet , Thomas Petazzoni , Greg Kroah-Hartman , Helen Koike , Vinod Koul , Maxime Ripard , Kishon Vijay Abraham I , Paul Kocialkowski , Chen-Yu Tsai , Rob Herring , Hans Verkuil , Ezequiel Garcia , Yong Deng , Sakari Ailus , Mauro Carvalho Chehab , kevin.lhopital@hotmail.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The Allwinner A31 D-PHY supports both Rx and Tx modes. While the latter is already supported and used for MIPI DSI this adds support for the former, to be used with MIPI CSI-2. This implementation is inspired by Allwinner's V3s Linux SDK implementation, which was used as a documentation base. Signed-off-by: Paul Kocialkowski Acked-by: Maxime Ripard --- drivers/phy/allwinner/phy-sun6i-mipi-dphy.c | 164 +++++++++++++++++++- 1 file changed, 160 insertions(+), 4 deletions(-) diff --git a/drivers/phy/allwinner/phy-sun6i-mipi-dphy.c b/drivers/phy/allwinner/phy-sun6i-mipi-dphy.c index f0bc87d654d4..326383e72528 100644 --- a/drivers/phy/allwinner/phy-sun6i-mipi-dphy.c +++ b/drivers/phy/allwinner/phy-sun6i-mipi-dphy.c @@ -24,6 +24,14 @@ #define SUN6I_DPHY_TX_CTL_REG 0x04 #define SUN6I_DPHY_TX_CTL_HS_TX_CLK_CONT BIT(28) +#define SUN6I_DPHY_RX_CTL_REG 0x08 +#define SUN6I_DPHY_RX_CTL_EN_DBC BIT(31) +#define SUN6I_DPHY_RX_CTL_RX_CLK_FORCE BIT(24) +#define SUN6I_DPHY_RX_CTL_RX_D3_FORCE BIT(23) +#define SUN6I_DPHY_RX_CTL_RX_D2_FORCE BIT(22) +#define SUN6I_DPHY_RX_CTL_RX_D1_FORCE BIT(21) +#define SUN6I_DPHY_RX_CTL_RX_D0_FORCE BIT(20) + #define SUN6I_DPHY_TX_TIME0_REG 0x10 #define SUN6I_DPHY_TX_TIME0_HS_TRAIL(n) (((n) & 0xff) << 24) #define SUN6I_DPHY_TX_TIME0_HS_PREPARE(n) (((n) & 0xff) << 16) @@ -44,12 +52,29 @@ #define SUN6I_DPHY_TX_TIME4_HS_TX_ANA1(n) (((n) & 0xff) << 8) #define SUN6I_DPHY_TX_TIME4_HS_TX_ANA0(n) ((n) & 0xff) +#define SUN6I_DPHY_RX_TIME0_REG 0x30 +#define SUN6I_DPHY_RX_TIME0_HS_RX_SYNC(n) (((n) & 0xff) << 24) +#define SUN6I_DPHY_RX_TIME0_HS_RX_CLK_MISS(n) (((n) & 0xff) << 16) +#define SUN6I_DPHY_RX_TIME0_LP_RX(n) (((n) & 0xff) << 8) + +#define SUN6I_DPHY_RX_TIME1_REG 0x34 +#define SUN6I_DPHY_RX_TIME1_RX_DLY(n) (((n) & 0xfff) << 20) +#define SUN6I_DPHY_RX_TIME1_LP_RX_ULPS_WP(n) ((n) & 0xfffff) + +#define SUN6I_DPHY_RX_TIME2_REG 0x38 +#define SUN6I_DPHY_RX_TIME2_HS_RX_ANA1(n) (((n) & 0xff) << 8) +#define SUN6I_DPHY_RX_TIME2_HS_RX_ANA0(n) ((n) & 0xff) + +#define SUN6I_DPHY_RX_TIME3_REG 0x40 +#define SUN6I_DPHY_RX_TIME3_LPRST_DLY(n) (((n) & 0xffff) << 16) + #define SUN6I_DPHY_ANA0_REG 0x4c #define SUN6I_DPHY_ANA0_REG_PWS BIT(31) #define SUN6I_DPHY_ANA0_REG_DMPC BIT(28) #define SUN6I_DPHY_ANA0_REG_DMPD(n) (((n) & 0xf) << 24) #define SUN6I_DPHY_ANA0_REG_SLV(n) (((n) & 7) << 12) #define SUN6I_DPHY_ANA0_REG_DEN(n) (((n) & 0xf) << 8) +#define SUN6I_DPHY_ANA0_REG_SFB(n) (((n) & 3) << 2) #define SUN6I_DPHY_ANA1_REG 0x50 #define SUN6I_DPHY_ANA1_REG_VTTMODE BIT(31) @@ -92,6 +117,8 @@ struct sun6i_dphy { struct phy *phy; struct phy_configure_opts_mipi_dphy config; + + int submode; }; static int sun6i_dphy_init(struct phy *phy) @@ -105,6 +132,18 @@ static int sun6i_dphy_init(struct phy *phy) return 0; } +static int sun6i_dphy_set_mode(struct phy *phy, enum phy_mode mode, int submode) +{ + struct sun6i_dphy *dphy = phy_get_drvdata(phy); + + if (mode != PHY_MODE_MIPI_DPHY) + return -EINVAL; + + dphy->submode = submode; + + return 0; +} + static int sun6i_dphy_configure(struct phy *phy, union phy_configure_opts *opts) { struct sun6i_dphy *dphy = phy_get_drvdata(phy); @@ -119,9 +158,8 @@ static int sun6i_dphy_configure(struct phy *phy, union phy_configure_opts *opts) return 0; } -static int sun6i_dphy_power_on(struct phy *phy) +static int sun6i_dphy_tx_power_on(struct sun6i_dphy *dphy) { - struct sun6i_dphy *dphy = phy_get_drvdata(phy); u8 lanes_mask = GENMASK(dphy->config.lanes - 1, 0); regmap_write(dphy->regs, SUN6I_DPHY_TX_CTL_REG, @@ -211,12 +249,129 @@ static int sun6i_dphy_power_on(struct phy *phy) return 0; } +static int sun6i_dphy_rx_power_on(struct sun6i_dphy *dphy) +{ + /* Physical clock rate is actually half of symbol rate with DDR. */ + unsigned long mipi_symbol_rate = dphy->config.hs_clk_rate; + unsigned long dphy_clk_rate; + unsigned int rx_dly; + unsigned int lprst_dly; + u32 value; + + dphy_clk_rate = clk_get_rate(dphy->mod_clk); + if (!dphy_clk_rate) + return -EINVAL; + + /* Hardcoded timing parameters from the Allwinner BSP. */ + regmap_write(dphy->regs, SUN6I_DPHY_RX_TIME0_REG, + SUN6I_DPHY_RX_TIME0_HS_RX_SYNC(255) | + SUN6I_DPHY_RX_TIME0_HS_RX_CLK_MISS(255) | + SUN6I_DPHY_RX_TIME0_LP_RX(255)); + + /* + * Formula from the Allwinner BSP, with hardcoded coefficients + * (probably internal divider/multiplier). + */ + rx_dly = 8 * (unsigned int)(dphy_clk_rate / (mipi_symbol_rate / 8)); + + /* + * The Allwinner BSP has an alternative formula for LP_RX_ULPS_WP: + * lp_ulps_wp_cnt = lp_ulps_wp_ms * lp_clk / 1000 + * but does not use it and hardcodes 255 instead. + */ + regmap_write(dphy->regs, SUN6I_DPHY_RX_TIME1_REG, + SUN6I_DPHY_RX_TIME1_RX_DLY(rx_dly) | + SUN6I_DPHY_RX_TIME1_LP_RX_ULPS_WP(255)); + + /* HS_RX_ANA0 value is hardcoded in the Allwinner BSP. */ + regmap_write(dphy->regs, SUN6I_DPHY_RX_TIME2_REG, + SUN6I_DPHY_RX_TIME2_HS_RX_ANA0(4)); + + /* + * Formula from the Allwinner BSP, with hardcoded coefficients + * (probably internal divider/multiplier). + */ + lprst_dly = 4 * (unsigned int)(dphy_clk_rate / (mipi_symbol_rate / 2)); + + regmap_write(dphy->regs, SUN6I_DPHY_RX_TIME3_REG, + SUN6I_DPHY_RX_TIME3_LPRST_DLY(lprst_dly)); + + /* Analog parameters are hardcoded in the Allwinner BSP. */ + regmap_write(dphy->regs, SUN6I_DPHY_ANA0_REG, + SUN6I_DPHY_ANA0_REG_PWS | + SUN6I_DPHY_ANA0_REG_SLV(7) | + SUN6I_DPHY_ANA0_REG_SFB(2)); + + regmap_write(dphy->regs, SUN6I_DPHY_ANA1_REG, + SUN6I_DPHY_ANA1_REG_SVTT(4)); + + regmap_write(dphy->regs, SUN6I_DPHY_ANA4_REG, + SUN6I_DPHY_ANA4_REG_DMPLVC | + SUN6I_DPHY_ANA4_REG_DMPLVD(1)); + + regmap_write(dphy->regs, SUN6I_DPHY_ANA2_REG, + SUN6I_DPHY_ANA2_REG_ENIB); + + regmap_write(dphy->regs, SUN6I_DPHY_ANA3_REG, + SUN6I_DPHY_ANA3_EN_LDOR | + SUN6I_DPHY_ANA3_EN_LDOC | + SUN6I_DPHY_ANA3_EN_LDOD); + + /* + * Delay comes from the Allwinner BSP, likely for internal regulator + * ramp-up. + */ + udelay(3); + + value = SUN6I_DPHY_RX_CTL_EN_DBC | SUN6I_DPHY_RX_CTL_RX_CLK_FORCE; + + /* + * Rx data lane force-enable bits are used as regular RX enable by the + * Allwinner BSP. + */ + if (dphy->config.lanes >= 1) + value |= SUN6I_DPHY_RX_CTL_RX_D0_FORCE; + if (dphy->config.lanes >= 2) + value |= SUN6I_DPHY_RX_CTL_RX_D1_FORCE; + if (dphy->config.lanes >= 3) + value |= SUN6I_DPHY_RX_CTL_RX_D2_FORCE; + if (dphy->config.lanes == 4) + value |= SUN6I_DPHY_RX_CTL_RX_D3_FORCE; + + regmap_write(dphy->regs, SUN6I_DPHY_RX_CTL_REG, value); + + regmap_write(dphy->regs, SUN6I_DPHY_GCTL_REG, + SUN6I_DPHY_GCTL_LANE_NUM(dphy->config.lanes) | + SUN6I_DPHY_GCTL_EN); + + return 0; +} + +static int sun6i_dphy_power_on(struct phy *phy) +{ + struct sun6i_dphy *dphy = phy_get_drvdata(phy); + + switch (dphy->submode) { + case PHY_MIPI_DPHY_SUBMODE_TX: + return sun6i_dphy_tx_power_on(dphy); + case PHY_MIPI_DPHY_SUBMODE_RX: + return sun6i_dphy_rx_power_on(dphy); + default: + return -EINVAL; + } +} + static int sun6i_dphy_power_off(struct phy *phy) { struct sun6i_dphy *dphy = phy_get_drvdata(phy); - regmap_update_bits(dphy->regs, SUN6I_DPHY_ANA1_REG, - SUN6I_DPHY_ANA1_REG_VTTMODE, 0); + regmap_write(dphy->regs, SUN6I_DPHY_GCTL_REG, 0); + + regmap_write(dphy->regs, SUN6I_DPHY_ANA0_REG, 0); + regmap_write(dphy->regs, SUN6I_DPHY_ANA1_REG, 0); + regmap_write(dphy->regs, SUN6I_DPHY_ANA2_REG, 0); + regmap_write(dphy->regs, SUN6I_DPHY_ANA3_REG, 0); + regmap_write(dphy->regs, SUN6I_DPHY_ANA4_REG, 0); return 0; } @@ -234,6 +389,7 @@ static int sun6i_dphy_exit(struct phy *phy) static const struct phy_ops sun6i_dphy_ops = { + .set_mode = sun6i_dphy_set_mode, .configure = sun6i_dphy_configure, .power_on = sun6i_dphy_power_on, .power_off = sun6i_dphy_power_off, From patchwork Fri Jan 15 20:01:29 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 12023967 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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 46764C433E6 for ; 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Fri, 15 Jan 2021 20:01:59 +0000 (UTC) From: Paul Kocialkowski To: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, devel@driverdev.osuosl.org, linux-sunxi@googlegroups.com Subject: [PATCH v5 04/16] media: sun6i-csi: Stop using the deprecated fwnode endpoint parser Date: Fri, 15 Jan 2021 21:01:29 +0100 Message-Id: <20210115200141.1397785-5-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> References: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210115_150203_696882_59D41438 X-CRM114-Status: GOOD ( 20.27 ) 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: Jernej Skrabec , Dafna Hirschfeld , Philipp Zabel , Jonathan Corbet , Thomas Petazzoni , Greg Kroah-Hartman , Helen Koike , Vinod Koul , Maxime Ripard , Kishon Vijay Abraham I , Paul Kocialkowski , Chen-Yu Tsai , Rob Herring , Hans Verkuil , Ezequiel Garcia , Yong Deng , Sakari Ailus , Mauro Carvalho Chehab , kevin.lhopital@hotmail.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The v4l2_async_notifier_parse_fwnode_endpoints helper is getting deprecated in favor of explicit parsing of the endpoints. Implement it instead of using this deprecated function. Since this was the last user of the helper, it should now be safe to remove. Signed-off-by: Paul Kocialkowski Acked-by: Maxime Ripard --- .../platform/sunxi/sun6i-csi/sun6i_csi.c | 69 ++++++++++++------- .../platform/sunxi/sun6i-csi/sun6i_csi.h | 1 + 2 files changed, 44 insertions(+), 26 deletions(-) diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c index c3b2f27b99d2..1a11a6174a17 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c @@ -693,28 +693,6 @@ static const struct v4l2_async_notifier_operations sun6i_csi_async_ops = { .complete = sun6i_subdev_notify_complete, }; -static int sun6i_csi_fwnode_parse(struct device *dev, - struct v4l2_fwnode_endpoint *vep, - struct v4l2_async_subdev *asd) -{ - struct sun6i_csi *csi = dev_get_drvdata(dev); - - if (vep->base.port || vep->base.id) { - dev_warn(dev, "Only support a single port with one endpoint\n"); - return -ENOTCONN; - } - - switch (vep->bus_type) { - case V4L2_MBUS_PARALLEL: - case V4L2_MBUS_BT656: - csi->v4l2_ep = *vep; - return 0; - default: - dev_err(dev, "Unsupported media bus type\n"); - return -ENOTCONN; - } -} - static void sun6i_csi_v4l2_cleanup(struct sun6i_csi *csi) { media_device_unregister(&csi->media_dev); @@ -726,6 +704,48 @@ static void sun6i_csi_v4l2_cleanup(struct sun6i_csi *csi) media_device_cleanup(&csi->media_dev); } +static int sun6i_csi_v4l2_fwnode_init(struct sun6i_csi *csi) +{ + struct v4l2_fwnode_endpoint *endpoint = NULL; + struct fwnode_handle *handle = NULL; + int ret; + + /* Parallel */ + + endpoint = &csi->v4l2_ep; + handle = fwnode_graph_get_endpoint_by_id(dev_fwnode(csi->dev), 0, 0, + FWNODE_GRAPH_ENDPOINT_NEXT); + if (!handle) + return 0; + + ret = v4l2_fwnode_endpoint_parse(handle, endpoint); + if (ret) + goto error; + + if (endpoint->bus_type != V4L2_MBUS_PARALLEL && + endpoint->bus_type != V4L2_MBUS_BT656) { + dev_err(csi->dev, "Unsupported parallel media bus type\n"); + ret = -ENOTCONN; + goto error; + } + + ret = v4l2_async_notifier_add_fwnode_remote_subdev(&csi->notifier, + handle, + &csi->subdev); + if (ret) + goto error; + + fwnode_handle_put(handle); + + return 0; + +error: + if (handle) + fwnode_handle_put(handle); + + return ret; +} + static int sun6i_csi_v4l2_init(struct sun6i_csi *csi) { int ret; @@ -760,10 +780,7 @@ static int sun6i_csi_v4l2_init(struct sun6i_csi *csi) if (ret) goto unreg_v4l2; - ret = v4l2_async_notifier_parse_fwnode_endpoints(csi->dev, - &csi->notifier, - sizeof(struct v4l2_async_subdev), - sun6i_csi_fwnode_parse); + ret = sun6i_csi_v4l2_fwnode_init(csi); if (ret) goto clean_video; diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h index c626821aaedb..7f3389c70794 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h @@ -38,6 +38,7 @@ struct sun6i_csi { struct v4l2_device v4l2_dev; struct media_device media_dev; + struct v4l2_async_subdev subdev; struct v4l2_async_notifier notifier; /* video port settings */ From patchwork Fri Jan 15 20:01:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 12023969 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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 85C35C433E0 for ; Fri, 15 Jan 2021 20:04:23 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 1682C23AF8 for ; Fri, 15 Jan 2021 20:04:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1682C23AF8 Authentication-Results: mail.kernel.org; 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Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0VId-0002d4-JI; Fri, 15 Jan 2021 20:02:23 +0000 Received: from relay5-d.mail.gandi.net ([217.70.183.197]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0VIL-0002UP-N4 for linux-arm-kernel@lists.infradead.org; Fri, 15 Jan 2021 20:02:12 +0000 X-Originating-IP: 93.29.109.196 Received: from localhost.localdomain (196.109.29.93.rev.sfr.net [93.29.109.196]) (Authenticated sender: paul.kocialkowski@bootlin.com) by relay5-d.mail.gandi.net (Postfix) with ESMTPSA id 7617D1C0007; Fri, 15 Jan 2021 20:02:02 +0000 (UTC) From: Paul Kocialkowski To: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, devel@driverdev.osuosl.org, linux-sunxi@googlegroups.com Subject: [PATCH v5 05/16] media: sun6i-csi: Use common V4L2 format info for storage bpp Date: Fri, 15 Jan 2021 21:01:30 +0100 Message-Id: <20210115200141.1397785-6-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> References: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210115_150206_035961_272FAF7E X-CRM114-Status: GOOD ( 17.55 ) 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: Jernej Skrabec , Dafna Hirschfeld , Philipp Zabel , Jonathan Corbet , Thomas Petazzoni , Greg Kroah-Hartman , Helen Koike , Vinod Koul , Maxime Ripard , Kishon Vijay Abraham I , Paul Kocialkowski , Chen-Yu Tsai , Rob Herring , Hans Verkuil , Ezequiel Garcia , Yong Deng , Sakari Ailus , Mauro Carvalho Chehab , kevin.lhopital@hotmail.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org V4L2 has a common helper which can be used for calculating the number of stored bits per pixels of a given (stored) image format. Use the helper-returned structure instead of our own switch/case list. Note that a few formats are not in that list so we keep them as special cases. The custom switch/case was also wrong concerning 10/12-bit Bayer formats, which are aligned to 16 bits in memory. Using the common helper fixes it. Fixes: 5cc7522d8965 ("media: sun6i: Add support for Allwinner CSI V3s") Signed-off-by: Paul Kocialkowski Acked-by: Maxime Ripard --- .../platform/sunxi/sun6i-csi/sun6i_csi.h | 55 +++++++------------ 1 file changed, 20 insertions(+), 35 deletions(-) diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h index 7f3389c70794..7cd23cd74685 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h @@ -87,53 +87,38 @@ void sun6i_csi_update_buf_addr(struct sun6i_csi *csi, dma_addr_t addr); */ void sun6i_csi_set_stream(struct sun6i_csi *csi, bool enable); -/* get bpp form v4l2 pixformat */ +/* get memory storage bpp from v4l2 pixformat */ static inline int sun6i_csi_get_bpp(unsigned int pixformat) { + const struct v4l2_format_info *info; + unsigned int i; + int bpp = 0; + + /* Handle special cases unknown to V4L2 format info first. */ switch (pixformat) { - case V4L2_PIX_FMT_SBGGR8: - case V4L2_PIX_FMT_SGBRG8: - case V4L2_PIX_FMT_SGRBG8: - case V4L2_PIX_FMT_SRGGB8: case V4L2_PIX_FMT_JPEG: return 8; - case V4L2_PIX_FMT_SBGGR10: - case V4L2_PIX_FMT_SGBRG10: - case V4L2_PIX_FMT_SGRBG10: - case V4L2_PIX_FMT_SRGGB10: - return 10; - case V4L2_PIX_FMT_SBGGR12: - case V4L2_PIX_FMT_SGBRG12: - case V4L2_PIX_FMT_SGRBG12: - case V4L2_PIX_FMT_SRGGB12: case V4L2_PIX_FMT_HM12: - case V4L2_PIX_FMT_NV12: - case V4L2_PIX_FMT_NV21: - case V4L2_PIX_FMT_YUV420: - case V4L2_PIX_FMT_YVU420: return 12; - case V4L2_PIX_FMT_YUYV: - case V4L2_PIX_FMT_YVYU: - case V4L2_PIX_FMT_UYVY: - case V4L2_PIX_FMT_VYUY: - case V4L2_PIX_FMT_NV16: - case V4L2_PIX_FMT_NV61: - case V4L2_PIX_FMT_YUV422P: - case V4L2_PIX_FMT_RGB565: case V4L2_PIX_FMT_RGB565X: return 16; - case V4L2_PIX_FMT_RGB24: - case V4L2_PIX_FMT_BGR24: - return 24; - case V4L2_PIX_FMT_RGB32: - case V4L2_PIX_FMT_BGR32: - return 32; - default: + } + + info = v4l2_format_info(pixformat); + if (!info) { WARN(1, "Unsupported pixformat: 0x%x\n", pixformat); - break; + return 0; + } + + for (i = 0; i < info->comp_planes; i++) { + unsigned int hdiv = (i == 0) ? 1 : info->hdiv; + unsigned int vdiv = (i == 0) ? 1 : info->vdiv; + + /* We return bits per pixel while V4L2 format info is bytes. */ + bpp += 8 * info->bpp[i] / hdiv / vdiv; } - return 0; + return bpp; } #endif /* __SUN6I_CSI_H__ */ From patchwork Fri Jan 15 20:01:31 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 12023965 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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 4E2E1C433E9 for ; Fri, 15 Jan 2021 20:04:19 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 0B19123AA9 for ; Fri, 15 Jan 2021 20:04:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0B19123AA9 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.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=o+7DcSqKRdjsKeLe43jv6Nak2DDBeOKcgnZX4Ipds7s=; b=MngkSvpXiXIT9ZD4QyY5kz4hh t1AsufO6OJRSqhvkZdxpB7qBH5pF+Kp7zADQavkH7Ncneizvh/vk0nUF7QlH2Xh+wSkueAY82Gzdd 0iSj86GyKQzSC+V7rGleo/ViffQBpzf15bfGryKCbSsrG2C92P75ujBwreBYL8+4j0wFYnZDI+zg9 Bpa3mScz4gZWNlwGSVDObzVNr7E4fRSmVFH2zgWQo2VceJDMMT93dh92TakxTD8o12PFnSwpCqcRt /5afduT5aLPEVWvOvF14o6vgkcx0PshmV4nFHservdafjdHk4MbDGfBKC6UbxRVytdnHLBCx/Cd8F C7/Sh3D6Q==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0VIo-0002gJ-Ah; Fri, 15 Jan 2021 20:02:34 +0000 Received: from relay5-d.mail.gandi.net ([217.70.183.197]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0VIO-0002Vm-5Q for linux-arm-kernel@lists.infradead.org; Fri, 15 Jan 2021 20:02:15 +0000 X-Originating-IP: 93.29.109.196 Received: from localhost.localdomain (196.109.29.93.rev.sfr.net [93.29.109.196]) (Authenticated sender: paul.kocialkowski@bootlin.com) by relay5-d.mail.gandi.net (Postfix) with ESMTPSA id B95B51C000A; Fri, 15 Jan 2021 20:02:04 +0000 (UTC) From: Paul Kocialkowski To: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, devel@driverdev.osuosl.org, linux-sunxi@googlegroups.com Subject: [PATCH v5 06/16] media: sun6i-csi: Only configure the interface data width for parallel Date: Fri, 15 Jan 2021 21:01:31 +0100 Message-Id: <20210115200141.1397785-7-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> References: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210115_150208_517972_2ED4C557 X-CRM114-Status: GOOD ( 15.40 ) 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: =?utf-8?b?S8OpdmluIEwnaMO0cGl0YWw=?= , Jernej Skrabec , Dafna Hirschfeld , Philipp Zabel , Jonathan Corbet , Thomas Petazzoni , Greg Kroah-Hartman , Helen Koike , Vinod Koul , Maxime Ripard , Kishon Vijay Abraham I , Paul Kocialkowski , Chen-Yu Tsai , Rob Herring , Hans Verkuil , Ezequiel Garcia , Yong Deng , Sakari Ailus , Mauro Carvalho Chehab , kevin.lhopital@hotmail.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Bits related to the interface data width are only applicable to the parallel interface and are irrelevant when the CSI controller is taking input from the MIPI CSI-2 controller. In prevision of adding support for this case, set these bits conditionally so there is no ambiguity. The conditional block is moved around before the interlaced conditional block for nicer code symmetry (conditional blocks first) while at it. Co-developed-by: Kévin L'hôpital Signed-off-by: Kévin L'hôpital Signed-off-by: Paul Kocialkowski Acked-by: Maxime Ripard --- .../platform/sunxi/sun6i-csi/sun6i_csi.c | 42 +++++++++++-------- 1 file changed, 25 insertions(+), 17 deletions(-) diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c index 1a11a6174a17..d06028f42534 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c @@ -378,8 +378,13 @@ static void sun6i_csi_setup_bus(struct sun6i_csi_dev *sdev) unsigned char bus_width; u32 flags; u32 cfg; + bool input_parallel = false; bool input_interlaced = false; + if (endpoint->bus_type == V4L2_MBUS_PARALLEL || + endpoint->bus_type == V4L2_MBUS_BT656) + input_parallel = true; + if (csi->config.field == V4L2_FIELD_INTERLACED || csi->config.field == V4L2_FIELD_INTERLACED_TB || csi->config.field == V4L2_FIELD_INTERLACED_BT) @@ -395,6 +400,26 @@ static void sun6i_csi_setup_bus(struct sun6i_csi_dev *sdev) CSI_IF_CFG_HREF_POL_MASK | CSI_IF_CFG_FIELD_MASK | CSI_IF_CFG_SRC_TYPE_MASK); + if (input_parallel) { + switch (bus_width) { + case 8: + cfg |= CSI_IF_CFG_IF_DATA_WIDTH_8BIT; + break; + case 10: + cfg |= CSI_IF_CFG_IF_DATA_WIDTH_10BIT; + break; + case 12: + cfg |= CSI_IF_CFG_IF_DATA_WIDTH_12BIT; + break; + case 16: /* No need to configure DATA_WIDTH for 16bit */ + break; + default: + dev_warn(sdev->dev, "Unsupported bus width: %u\n", + bus_width); + break; + } + } + if (input_interlaced) cfg |= CSI_IF_CFG_SRC_TYPE_INTERLACED; else @@ -440,23 +465,6 @@ static void sun6i_csi_setup_bus(struct sun6i_csi_dev *sdev) break; } - switch (bus_width) { - case 8: - cfg |= CSI_IF_CFG_IF_DATA_WIDTH_8BIT; - break; - case 10: - cfg |= CSI_IF_CFG_IF_DATA_WIDTH_10BIT; - break; - case 12: - cfg |= CSI_IF_CFG_IF_DATA_WIDTH_12BIT; - break; - case 16: /* No need to configure DATA_WIDTH for 16bit */ - break; - default: - dev_warn(sdev->dev, "Unsupported bus width: %u\n", bus_width); - break; - } - regmap_write(sdev->regmap, CSI_IF_CFG_REG, cfg); } From patchwork Fri Jan 15 20:01:32 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 12023963 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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 BC75FC43381 for ; Fri, 15 Jan 2021 20:04:16 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 6F2E823A56 for ; Fri, 15 Jan 2021 20:04:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6F2E823A56 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.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=+dHniPtSNzEzWqruLVqklkeUZIMNNfbgpTToYsA3DZ4=; b=ArWj8BjKyvPD2RPdfFeAm7zNO 5d7i9tKHny0CgAUvf5Vh48Ls9QA+O4Qf1znZtdJU6S6dFXbn8YQ3ewcq+TjUN4vLw/Bd7ZbNLzTK5 Vd9OhBFj34YOcPdOR4DCzDd6MdESaG7zvRW+yyEZ/PzxwAD9bpR6xv9p2Tc6ZUq2w8cXqWaPhfk0m FmVMPySSRbWth64V3YfeLY8rxKH+BVoqfqG4d+GNjRZTQsJ4K6o+9WaS7GT0NbV6CyCAJqoM0Y7J1 jW7trk6wEh3gKPpRaebp1cQqIFxslFAl/liOz3fJBEncF62B2xXLndwg1giAuOZ6u024ESLIYApRF H9L1NsMfA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0VIv-0002iE-Hy; Fri, 15 Jan 2021 20:02:41 +0000 Received: from relay5-d.mail.gandi.net ([217.70.183.197]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0VIQ-0002Wm-E9 for linux-arm-kernel@lists.infradead.org; Fri, 15 Jan 2021 20:02:15 +0000 X-Originating-IP: 93.29.109.196 Received: from localhost.localdomain (196.109.29.93.rev.sfr.net [93.29.109.196]) (Authenticated sender: paul.kocialkowski@bootlin.com) by relay5-d.mail.gandi.net (Postfix) with ESMTPSA id 5FD2F1C0010; Fri, 15 Jan 2021 20:02:07 +0000 (UTC) From: Paul Kocialkowski To: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, devel@driverdev.osuosl.org, linux-sunxi@googlegroups.com Subject: [PATCH v5 07/16] dt-bindings: media: sun6i-a31-csi: Add MIPI CSI-2 input port Date: Fri, 15 Jan 2021 21:01:32 +0100 Message-Id: <20210115200141.1397785-8-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> References: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210115_150210_718581_7ABFB147 X-CRM114-Status: GOOD ( 16.22 ) 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: Jernej Skrabec , Dafna Hirschfeld , Philipp Zabel , Jonathan Corbet , Thomas Petazzoni , Greg Kroah-Hartman , Helen Koike , Vinod Koul , Maxime Ripard , Kishon Vijay Abraham I , Paul Kocialkowski , Chen-Yu Tsai , Rob Herring , Hans Verkuil , Ezequiel Garcia , Yong Deng , Sakari Ailus , Mauro Carvalho Chehab , kevin.lhopital@hotmail.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The A31 CSI controller supports two distinct input interfaces: parallel and an external MIPI CSI-2 bridge. The parallel interface is often connected to a set of hardware pins while the MIPI CSI-2 bridge is an internal FIFO-ish link. As a result, these two inputs are distinguished as two different ports. Note that only one of the two may be present on a controller instance. For example, the V3s has one controller dedicated to MIPI-CSI2 and one dedicated to parallel. Update the binding with an explicit ports node that holds two distinct port nodes: one for parallel input and one for MIPI CSI-2. This is backward-compatible with the single-port approach that was previously taken for representing the parallel interface port, which stays enumerated as fwnode port 0. Note that additional ports may be added in the future, especially to support feeding the CSI controller's output to the ISP. Signed-off-by: Paul Kocialkowski Reviewed-by: Rob Herring Acked-by: Maxime Ripard --- .../media/allwinner,sun6i-a31-csi.yaml | 88 ++++++++++++++++--- 1 file changed, 75 insertions(+), 13 deletions(-) diff --git a/Documentation/devicetree/bindings/media/allwinner,sun6i-a31-csi.yaml b/Documentation/devicetree/bindings/media/allwinner,sun6i-a31-csi.yaml index 1fd9b5532a21..77ded77505e9 100644 --- a/Documentation/devicetree/bindings/media/allwinner,sun6i-a31-csi.yaml +++ b/Documentation/devicetree/bindings/media/allwinner,sun6i-a31-csi.yaml @@ -67,6 +67,62 @@ properties: additionalProperties: false + ports: + type: object + + properties: + port@0: + type: object + description: Parallel input port, connect to a parallel sensor + + properties: + reg: + const: 0 + + endpoint: + type: object + + properties: + remote-endpoint: true + + bus-width: + enum: [ 8, 10, 12, 16 ] + + pclk-sample: true + hsync-active: true + vsync-active: true + + required: + - bus-width + - remote-endpoint + + required: + - endpoint + + additionalProperties: false + + port@1: + type: object + description: MIPI CSI-2 bridge input port + + properties: + reg: + const: 1 + + endpoint: + type: object + + properties: + remote-endpoint: true + + required: + - remote-endpoint + + required: + - endpoint + + additionalProperties: false + required: - compatible - reg @@ -95,19 +151,25 @@ examples: "ram"; resets = <&ccu RST_BUS_CSI>; - port { - /* Parallel bus endpoint */ - csi1_ep: endpoint { - remote-endpoint = <&adv7611_ep>; - bus-width = <16>; - - /* - * If hsync-active/vsync-active are missing, - * embedded BT.656 sync is used. - */ - hsync-active = <0>; /* Active low */ - vsync-active = <0>; /* Active low */ - pclk-sample = <1>; /* Rising */ + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + /* Parallel bus endpoint */ + csi1_ep: endpoint { + remote-endpoint = <&adv7611_ep>; + bus-width = <16>; + + /* + * If hsync-active/vsync-active are missing, + * embedded BT.656 sync is used. + */ + hsync-active = <0>; /* Active low */ + vsync-active = <0>; /* Active low */ + pclk-sample = <1>; /* Rising */ + }; }; }; }; From patchwork Fri Jan 15 20:01:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 12023979 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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 44419C433E0 for ; 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bh=4DQserd2u8g02iSYilvVOB6DBx0bu75KuzFOtwDSTag=; b=PVCiLQHnKuOi2KV/7xswvFfH1 VbQ9NKL4IYpUmADfd4TNoM7s9oNc64Xm68oHhq+CKIvIXDezp/MRtnOHtJ78/ufwu5SegeGd5Gmrd 7jRfF+kJxZ4ZSSJjZHUwRQcytHiRN8gbUe1/6mP3+dtE8PRY4mTAG+4nCp3sOPq6hqT1C0Apt7QQZ XCu4KeaE/sFYTuZWTcEcBlqv2D4/Ga3eFP91antPtwTYShvhUQLQm+7vPKSM/M4TmFMKUtTaoOk7O NiBCl7wJff7ULIN17crlX3szatFsKSx//6+qNRRnZdEneAy8ifw3OCxKHNiGPMq78LcWFth4DM4VL TAW/ZHioQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0VJU-0002s5-IZ; Fri, 15 Jan 2021 20:03:17 +0000 Received: from relay5-d.mail.gandi.net ([217.70.183.197]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0VIS-0002XZ-Pn for linux-arm-kernel@lists.infradead.org; Fri, 15 Jan 2021 20:02:26 +0000 X-Originating-IP: 93.29.109.196 Received: from localhost.localdomain (196.109.29.93.rev.sfr.net [93.29.109.196]) (Authenticated sender: paul.kocialkowski@bootlin.com) by relay5-d.mail.gandi.net (Postfix) with ESMTPSA id 96C0A1C000C; Fri, 15 Jan 2021 20:02:09 +0000 (UTC) From: Paul Kocialkowski To: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, devel@driverdev.osuosl.org, linux-sunxi@googlegroups.com Subject: [PATCH v5 08/16] media: sun6i-csi: Add support for MIPI CSI-2 bridge input Date: Fri, 15 Jan 2021 21:01:33 +0100 Message-Id: <20210115200141.1397785-9-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> References: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210115_150213_170288_4B8CDC05 X-CRM114-Status: GOOD ( 29.67 ) 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: Jernej Skrabec , Dafna Hirschfeld , Philipp Zabel , Jonathan Corbet , Thomas Petazzoni , Greg Kroah-Hartman , Helen Koike , Vinod Koul , Maxime Ripard , Kishon Vijay Abraham I , Paul Kocialkowski , Chen-Yu Tsai , Rob Herring , Hans Verkuil , Ezequiel Garcia , Yong Deng , Sakari Ailus , Mauro Carvalho Chehab , kevin.lhopital@hotmail.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The A31 CSI controller supports a MIPI CSI-2 bridge input, which has its own dedicated port in the fwnode graph. Support for this input is added with this change: - two pads are defined for the media entity instead of one and only one needs to be connected at a time; - the pads currently match the fwnode graph representation; - links are created between our pads and the subdevs for each interface and are no longer immutable so that userspace can select which interface to use in case both are bound to a subdev; - fwnode endpoints are parsed and stored for each interface; - the active subdev (and fwnode endpoint) is retrieved when validating the media link at stream on time and cleared at stream off; - an error is raised if both links are active at the same time; - the MIPI interface bit is set if the MIPI CSI-2 bridge endpoint is active. In the future, the media entity representation might evolve to: - distinguish the internal parallel bridge and data formatter; - represent each of the 4 internal channels that can exist between the parallel bridge (for BT656 time-multiplex) and MIPI CSI-2 (internal channels can be mapped to virtual channels); - connect the controller's output to the ISP instead of its DMA engine. Finally note that the MIPI CSI-2 bridges should not be linked in the fwnode graph unless they have a sensor subdev attached. Signed-off-by: Paul Kocialkowski Acked-by: Maxime Ripard --- .../platform/sunxi/sun6i-csi/sun6i_csi.c | 111 +++++++++++++++--- .../platform/sunxi/sun6i-csi/sun6i_csi.h | 9 +- .../platform/sunxi/sun6i-csi/sun6i_video.c | 57 +++++---- .../platform/sunxi/sun6i-csi/sun6i_video.h | 7 +- 4 files changed, 137 insertions(+), 47 deletions(-) diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c index d06028f42534..55cac91f8282 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c @@ -49,6 +49,7 @@ static inline struct sun6i_csi_dev *sun6i_csi_to_dev(struct sun6i_csi *csi) /* TODO add 10&12 bit YUV, RGB support */ bool sun6i_csi_is_format_supported(struct sun6i_csi *csi, + struct v4l2_fwnode_endpoint *endpoint, u32 pixformat, u32 mbus_code) { struct sun6i_csi_dev *sdev = sun6i_csi_to_dev(csi); @@ -58,9 +59,9 @@ bool sun6i_csi_is_format_supported(struct sun6i_csi *csi, * 8bit and 16bit bus width. * Identify the media bus format from device tree. */ - if ((sdev->csi.v4l2_ep.bus_type == V4L2_MBUS_PARALLEL - || sdev->csi.v4l2_ep.bus_type == V4L2_MBUS_BT656) - && sdev->csi.v4l2_ep.bus.parallel.bus_width == 16) { + if ((endpoint->bus_type == V4L2_MBUS_PARALLEL || + endpoint->bus_type == V4L2_MBUS_BT656) && + endpoint->bus.parallel.bus_width == 16) { switch (pixformat) { case V4L2_PIX_FMT_HM12: case V4L2_PIX_FMT_NV12: @@ -373,7 +374,7 @@ static enum csi_input_seq get_csi_input_seq(struct sun6i_csi_dev *sdev, static void sun6i_csi_setup_bus(struct sun6i_csi_dev *sdev) { - struct v4l2_fwnode_endpoint *endpoint = &sdev->csi.v4l2_ep; + struct v4l2_fwnode_endpoint *endpoint = sdev->csi.video.source_endpoint; struct sun6i_csi *csi = &sdev->csi; unsigned char bus_width; u32 flags; @@ -459,6 +460,9 @@ static void sun6i_csi_setup_bus(struct sun6i_csi_dev *sdev) if (flags & V4L2_MBUS_PCLK_SAMPLE_FALLING) cfg |= CSI_IF_CFG_CLK_POL_FALLING_EDGE; break; + case V4L2_MBUS_CSI2_DPHY: + cfg |= CSI_IF_CFG_MIPI_IF_MIPI; + break; default: dev_warn(sdev->dev, "Unsupported bus type: %d\n", endpoint->bus_type); @@ -636,11 +640,11 @@ void sun6i_csi_set_stream(struct sun6i_csi *csi, bool enable) * Media Controller and V4L2 */ static int sun6i_csi_link_entity(struct sun6i_csi *csi, + struct media_pad *sink_pad, struct media_entity *entity, - struct fwnode_handle *fwnode) + struct fwnode_handle *fwnode, bool enabled) { struct media_entity *sink; - struct media_pad *sink_pad; int src_pad_index; int ret; @@ -654,14 +658,12 @@ static int sun6i_csi_link_entity(struct sun6i_csi *csi, src_pad_index = ret; sink = &csi->video.vdev.entity; - sink_pad = &csi->video.pad; dev_dbg(csi->dev, "creating %s:%u -> %s:%u link\n", entity->name, src_pad_index, sink->name, sink_pad->index); ret = media_create_pad_link(entity, src_pad_index, sink, sink_pad->index, - MEDIA_LNK_FL_ENABLED | - MEDIA_LNK_FL_IMMUTABLE); + enabled ? MEDIA_LNK_FL_ENABLED : 0); if (ret < 0) { dev_err(csi->dev, "failed to create %s:%u -> %s:%u link\n", entity->name, src_pad_index, @@ -676,19 +678,67 @@ static int sun6i_subdev_notify_complete(struct v4l2_async_notifier *notifier) { struct sun6i_csi *csi = container_of(notifier, struct sun6i_csi, notifier); + struct sun6i_video *video = &csi->video; struct v4l2_device *v4l2_dev = &csi->v4l2_dev; - struct v4l2_subdev *sd; + struct v4l2_subdev *parallel_sd = NULL; + struct v4l2_subdev *mipi_csi2_bridge_sd = NULL; + struct fwnode_handle *handle = NULL; int ret; dev_dbg(csi->dev, "notify complete, all subdevs registered\n"); - sd = list_first_entry(&v4l2_dev->subdevs, struct v4l2_subdev, list); - if (!sd) - return -EINVAL; + /* Find the subdevs that match our fwnode ports. */ + while (1) { + struct v4l2_fwnode_link link; + struct v4l2_subdev *sd; - ret = sun6i_csi_link_entity(csi, &sd->entity, sd->fwnode); - if (ret < 0) - return ret; + handle = fwnode_graph_get_next_endpoint(dev_fwnode(csi->dev), + handle); + if (!handle) + break; + + ret = v4l2_fwnode_parse_link(handle, &link); + if (ret) + break; + + list_for_each_entry(sd, &v4l2_dev->subdevs, list) { + if (!sd->fwnode || link.remote_node != sd->fwnode) + continue; + + switch (link.local_port) { + case 0: + parallel_sd = sd; + break; + case 1: + mipi_csi2_bridge_sd = sd; + break; + } + } + + v4l2_fwnode_put_link(&link); + } + + if (parallel_sd) { + dev_dbg(csi->dev, "linking parallel interface subdev\n"); + + ret = sun6i_csi_link_entity(csi, &video->pads[0], + ¶llel_sd->entity, + parallel_sd->fwnode, true); + if (ret < 0) + return ret; + } + + if (mipi_csi2_bridge_sd) { + dev_dbg(csi->dev, "linking MIPI CSI-2 bridge subdev\n"); + + /* Mark the link as disabled if a parallel subdev is there. */ + ret = sun6i_csi_link_entity(csi, &video->pads[1], + &mipi_csi2_bridge_sd->entity, + mipi_csi2_bridge_sd->fwnode, + parallel_sd ? false : true); + if (ret < 0) + return ret; + } ret = v4l2_device_register_subdev_nodes(&csi->v4l2_dev); if (ret < 0) @@ -714,17 +764,18 @@ static void sun6i_csi_v4l2_cleanup(struct sun6i_csi *csi) static int sun6i_csi_v4l2_fwnode_init(struct sun6i_csi *csi) { + struct sun6i_video *video = &csi->video; struct v4l2_fwnode_endpoint *endpoint = NULL; struct fwnode_handle *handle = NULL; int ret; /* Parallel */ - endpoint = &csi->v4l2_ep; + endpoint = &video->parallel_endpoint; handle = fwnode_graph_get_endpoint_by_id(dev_fwnode(csi->dev), 0, 0, FWNODE_GRAPH_ENDPOINT_NEXT); if (!handle) - return 0; + goto mipi_csi2_bridge; ret = v4l2_fwnode_endpoint_parse(handle, endpoint); if (ret) @@ -745,6 +796,30 @@ static int sun6i_csi_v4l2_fwnode_init(struct sun6i_csi *csi) fwnode_handle_put(handle); + /* MIPI CSI-2 bridge */ + +mipi_csi2_bridge: + endpoint = &video->mipi_csi2_bridge_endpoint; + handle = fwnode_graph_get_endpoint_by_id(dev_fwnode(csi->dev), 1, 0, + FWNODE_GRAPH_ENDPOINT_NEXT); + if (!handle) + return 0; + + ret = v4l2_fwnode_endpoint_parse(handle, endpoint); + if (ret) + goto error; + + ret = v4l2_async_notifier_add_fwnode_remote_subdev(&csi->notifier, + handle, + &csi->subdev); + if (ret) + goto error; + + fwnode_handle_put(handle); + + /* Set this for our local convenience. */ + endpoint->bus_type = V4L2_MBUS_CSI2_DPHY; + return 0; error: diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h index 7cd23cd74685..0fd2d12e0322 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h @@ -41,9 +41,6 @@ struct sun6i_csi { struct v4l2_async_subdev subdev; struct v4l2_async_notifier notifier; - /* video port settings */ - struct v4l2_fwnode_endpoint v4l2_ep; - struct sun6i_csi_config config; struct sun6i_video video; @@ -52,11 +49,13 @@ struct sun6i_csi { /** * sun6i_csi_is_format_supported() - check if the format supported by csi * @csi: pointer to the csi + * @endpoint: pointer to the endpoint to check * @pixformat: v4l2 pixel format (V4L2_PIX_FMT_*) * @mbus_code: media bus format code (MEDIA_BUS_FMT_*) */ -bool sun6i_csi_is_format_supported(struct sun6i_csi *csi, u32 pixformat, - u32 mbus_code); +bool sun6i_csi_is_format_supported(struct sun6i_csi *csi, + struct v4l2_fwnode_endpoint *endpoint, + u32 pixformat, u32 mbus_code); /** * sun6i_csi_set_power() - power on/off the csi diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c index b55de9ab64d8..e968c0009711 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c @@ -72,22 +72,6 @@ static bool is_pixformat_valid(unsigned int pixformat) return false; } -static struct v4l2_subdev * -sun6i_video_remote_subdev(struct sun6i_video *video, u32 *pad) -{ - struct media_pad *remote; - - remote = media_entity_remote_pad(&video->pad); - - if (!remote || !is_media_entity_v4l2_subdev(remote->entity)) - return NULL; - - if (pad) - *pad = remote->index; - - return media_entity_to_v4l2_subdev(remote->entity); -} - static int sun6i_video_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, unsigned int *nplanes, @@ -150,7 +134,7 @@ static int sun6i_video_start_streaming(struct vb2_queue *vq, unsigned int count) goto stop_media_pipeline; } - subdev = sun6i_video_remote_subdev(video, NULL); + subdev = video->source_subdev; if (!subdev) goto stop_media_pipeline; @@ -206,6 +190,7 @@ static int sun6i_video_start_streaming(struct vb2_queue *vq, unsigned int count) sun6i_csi_set_stream(video->csi, false); stop_media_pipeline: media_pipeline_stop(&video->vdev.entity); + video->source_subdev = NULL; clear_dma_queue: spin_lock_irqsave(&video->dma_queue_lock, flags); list_for_each_entry(buf, &video->dma_queue, list) @@ -223,13 +208,16 @@ static void sun6i_video_stop_streaming(struct vb2_queue *vq) unsigned long flags; struct sun6i_csi_buffer *buf; - subdev = sun6i_video_remote_subdev(video, NULL); + subdev = video->source_subdev; if (subdev) v4l2_subdev_call(subdev, video, s_stream, 0); sun6i_csi_set_stream(video->csi, false); - media_pipeline_stop(&video->vdev.entity); + if (subdev) + media_pipeline_stop(&video->vdev.entity); + + video->source_subdev = NULL; /* Release all active buffers */ spin_lock_irqsave(&video->dma_queue_lock, flags); @@ -549,22 +537,42 @@ static int sun6i_video_link_validate(struct media_link *link) struct video_device *vdev = container_of(link->sink->entity, struct video_device, entity); struct sun6i_video *video = video_get_drvdata(vdev); + struct v4l2_fwnode_endpoint *endpoint; struct v4l2_subdev_format source_fmt; + struct v4l2_subdev *subdev; int ret; video->mbus_code = 0; - if (!media_entity_remote_pad(link->sink->entity->pads)) { + if (!link->source) { dev_info(video->csi->dev, "video node %s pad not connected\n", vdev->name); return -ENOLINK; } + if (!is_media_entity_v4l2_subdev(link->source->entity)) + return -ENODEV; + + subdev = media_entity_to_v4l2_subdev(link->source->entity); + + if (video->source_subdev) { + dev_err(video->csi->dev, + "unable to connect both parallel and MIPI CSI-2 bridge interfaces\n"); + return -ENOLINK; + } + + if (link->sink == &video->pads[0]) + endpoint = &video->parallel_endpoint; + else if (link->sink == &video->pads[1]) + endpoint = &video->mipi_csi2_bridge_endpoint; + else + return -EINVAL; + ret = sun6i_video_link_validate_get_format(link->source, &source_fmt); if (ret < 0) return ret; - if (!sun6i_csi_is_format_supported(video->csi, + if (!sun6i_csi_is_format_supported(video->csi, endpoint, video->fmt.fmt.pix.pixelformat, source_fmt.format.code)) { dev_err(video->csi->dev, @@ -584,6 +592,8 @@ static int sun6i_video_link_validate(struct media_link *link) } video->mbus_code = source_fmt.format.code; + video->source_endpoint = endpoint; + video->source_subdev = subdev; return 0; } @@ -603,9 +613,10 @@ int sun6i_video_init(struct sun6i_video *video, struct sun6i_csi *csi, video->csi = csi; /* Initialize the media entity... */ - video->pad.flags = MEDIA_PAD_FL_SINK | MEDIA_PAD_FL_MUST_CONNECT; + video->pads[0].flags = MEDIA_PAD_FL_SINK; + video->pads[1].flags = MEDIA_PAD_FL_SINK; vdev->entity.ops = &sun6i_video_media_ops; - ret = media_entity_pads_init(&vdev->entity, 1, &video->pad); + ret = media_entity_pads_init(&vdev->entity, 2, video->pads); if (ret < 0) return ret; diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.h index b9cd919c24ac..30d56d98d5e9 100644 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.h +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.h @@ -15,11 +15,16 @@ struct sun6i_csi; struct sun6i_video { struct video_device vdev; - struct media_pad pad; + struct media_pad pads[2]; struct sun6i_csi *csi; struct mutex lock; + struct v4l2_fwnode_endpoint parallel_endpoint; + struct v4l2_fwnode_endpoint mipi_csi2_bridge_endpoint; + struct v4l2_fwnode_endpoint *source_endpoint; + struct v4l2_subdev *source_subdev; + struct vb2_queue vb2_vidq; spinlock_t dma_queue_lock; struct list_head dma_queue; From patchwork Fri Jan 15 20:01:34 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 12023975 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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 62E31C433E9 for ; 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Fri, 15 Jan 2021 20:02:11 +0000 (UTC) From: Paul Kocialkowski To: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, devel@driverdev.osuosl.org, linux-sunxi@googlegroups.com Subject: [PATCH v5 09/16] dt-bindings: media: Add A31 MIPI CSI-2 bindings documentation Date: Fri, 15 Jan 2021 21:01:34 +0100 Message-Id: <20210115200141.1397785-10-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> References: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210115_150215_582872_C5210E63 X-CRM114-Status: GOOD ( 14.42 ) 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: Jernej Skrabec , Dafna Hirschfeld , Philipp Zabel , Jonathan Corbet , Thomas Petazzoni , Greg Kroah-Hartman , Helen Koike , Vinod Koul , Maxime Ripard , Kishon Vijay Abraham I , Paul Kocialkowski , Chen-Yu Tsai , Rob Herring , Hans Verkuil , Ezequiel Garcia , Yong Deng , Sakari Ailus , Mauro Carvalho Chehab , kevin.lhopital@hotmail.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This introduces YAML bindings documentation for the A31 MIPI CSI-2 controller. Signed-off-by: Paul Kocialkowski Reviewed-by: Maxime Ripard Reviewed-by: Rob Herring --- .../media/allwinner,sun6i-a31-mipi-csi2.yaml | 156 ++++++++++++++++++ 1 file changed, 156 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/allwinner,sun6i-a31-mipi-csi2.yaml diff --git a/Documentation/devicetree/bindings/media/allwinner,sun6i-a31-mipi-csi2.yaml b/Documentation/devicetree/bindings/media/allwinner,sun6i-a31-mipi-csi2.yaml new file mode 100644 index 000000000000..309336b93a87 --- /dev/null +++ b/Documentation/devicetree/bindings/media/allwinner,sun6i-a31-mipi-csi2.yaml @@ -0,0 +1,156 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/allwinner,sun6i-a31-mipi-csi2.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Allwinner A31 MIPI CSI-2 Device Tree Bindings + +maintainers: + - Paul Kocialkowski + +properties: + compatible: + oneOf: + - const: allwinner,sun6i-a31-mipi-csi2 + - items: + - const: allwinner,sun8i-v3s-mipi-csi2 + - const: allwinner,sun6i-a31-mipi-csi2 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + items: + - description: Bus Clock + - description: Module Clock + + clock-names: + items: + - const: bus + - const: mod + + phys: + maxItems: 1 + description: MIPI D-PHY + + phy-names: + items: + - const: dphy + + resets: + maxItems: 1 + + # See ./video-interfaces.txt for details + ports: + type: object + + properties: + port@0: + type: object + description: Input port, connect to a MIPI CSI-2 sensor + + properties: + reg: + const: 0 + + endpoint: + type: object + + properties: + remote-endpoint: true + + data-lanes: + minItems: 1 + maxItems: 4 + + required: + - data-lanes + - remote-endpoint + + required: + - endpoint + + additionalProperties: false + + port@1: + type: object + description: Output port, connect to a CSI controller + + properties: + reg: + const: 1 + + endpoint: + type: object + + properties: + remote-endpoint: true + + required: + - remote-endpoint + + required: + - endpoint + + additionalProperties: false + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + - phys + - phy-names + - resets + +additionalProperties: false + +examples: + - | + #include + #include + #include + + mipi_csi2: csi@1cb1000 { + compatible = "allwinner,sun8i-v3s-mipi-csi2", + "allwinner,sun6i-a31-mipi-csi2"; + reg = <0x01cb1000 0x1000>; + interrupts = ; + clocks = <&ccu CLK_BUS_CSI>, + <&ccu CLK_CSI1_SCLK>; + clock-names = "bus", "mod"; + resets = <&ccu RST_BUS_CSI>; + + phys = <&dphy>; + phy-names = "dphy"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + mipi_csi2_in: port@0 { + reg = <0>; + + mipi_csi2_in_ov5648: endpoint { + data-lanes = <1 2 3 4>; + + remote-endpoint = <&ov5648_out_mipi_csi2>; + }; + }; + + mipi_csi2_out: port@1 { + reg = <1>; + + mipi_csi2_out_csi0: endpoint { + remote-endpoint = <&csi0_in_mipi_csi2>; + }; + }; + }; + }; + +... From patchwork Fri Jan 15 20:01:35 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 12023985 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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 AC3CCC433DB for ; Fri, 15 Jan 2021 20:05:56 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 604802339E for ; Fri, 15 Jan 2021 20:05:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 604802339E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.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=BnzIfn87ykwOpq6X/CxLg5LMfVhI8lo/muZhwoYrP48=; b=GZq+R4PgL0CNOzmca4ud1naWW UCVzZDk7uVs9YUcFfjrH0Nsnkjk99ZvNQ3xQ7cWv7lQazE6Nla0OWsYzurE4AVUtUEAeTDf5VyQqD sTxIivgXxAKZ8n2Zslkk7EGDkmyBz8NJVYumPEyH9knDwhlrRBskzCx6EPeBQXpKWUs4r24QcKk7/ iZV2l1IWxiBBYlkPRMjzGXHGtvHM6s7PuxWRm+SyCuOPi9Q8HD4zpkLaAov2k+493z3Xg6BVkBBLX 0KEt57NnD2il0NAlG9dLc08z8BP1Qv/rn9g3esREmLOKB064noBlaTn+w+FYzO7Y+qZp5UbjOMdj+ i7+hh2nGg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0VJy-0003AW-FE; Fri, 15 Jan 2021 20:03:46 +0000 Received: from relay5-d.mail.gandi.net ([217.70.183.197]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0VIX-0002ZY-C2 for linux-arm-kernel@lists.infradead.org; Fri, 15 Jan 2021 20:02:35 +0000 X-Originating-IP: 93.29.109.196 Received: from localhost.localdomain (196.109.29.93.rev.sfr.net [93.29.109.196]) (Authenticated sender: paul.kocialkowski@bootlin.com) by relay5-d.mail.gandi.net (Postfix) with ESMTPSA id 3037A1C000D; Fri, 15 Jan 2021 20:02:14 +0000 (UTC) From: Paul Kocialkowski To: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, devel@driverdev.osuosl.org, linux-sunxi@googlegroups.com Subject: [PATCH v5 10/16] media: sunxi: Add support for the A31 MIPI CSI-2 controller Date: Fri, 15 Jan 2021 21:01:35 +0100 Message-Id: <20210115200141.1397785-11-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> References: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210115_150217_729710_B0FD0A1E X-CRM114-Status: GOOD ( 31.01 ) 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: Jernej Skrabec , Dafna Hirschfeld , Philipp Zabel , Jonathan Corbet , Thomas Petazzoni , Greg Kroah-Hartman , Helen Koike , Vinod Koul , Maxime Ripard , Kishon Vijay Abraham I , Paul Kocialkowski , Chen-Yu Tsai , Rob Herring , Hans Verkuil , Ezequiel Garcia , Yong Deng , Sakari Ailus , Mauro Carvalho Chehab , kevin.lhopital@hotmail.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The A31 MIPI CSI-2 controller is a dedicated MIPI CSI-2 bridge found on Allwinner SoCs such as the A31 and V3/V3s. It is a standalone block, connected to the CSI controller on one side and to the MIPI D-PHY block on the other. It has a dedicated address space, interrupt line and clock. It is represented as a V4L2 subdev to the CSI controller and takes a MIPI CSI-2 sensor as its own subdev, all using the fwnode graph and media controller API. Only 8-bit and 10-bit Bayer formats are currently supported. While up to 4 internal channels to the CSI controller exist, only one is currently supported by this implementation. Signed-off-by: Paul Kocialkowski Acked-by: Maxime Ripard --- drivers/media/platform/sunxi/Kconfig | 1 + drivers/media/platform/sunxi/Makefile | 1 + .../platform/sunxi/sun6i-mipi-csi2/Kconfig | 12 + .../platform/sunxi/sun6i-mipi-csi2/Makefile | 4 + .../sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c | 600 ++++++++++++++++++ .../sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.h | 117 ++++ 6 files changed, 735 insertions(+) create mode 100644 drivers/media/platform/sunxi/sun6i-mipi-csi2/Kconfig create mode 100644 drivers/media/platform/sunxi/sun6i-mipi-csi2/Makefile create mode 100644 drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c create mode 100644 drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.h diff --git a/drivers/media/platform/sunxi/Kconfig b/drivers/media/platform/sunxi/Kconfig index 7151cc249afa..9684e07454ad 100644 --- a/drivers/media/platform/sunxi/Kconfig +++ b/drivers/media/platform/sunxi/Kconfig @@ -2,3 +2,4 @@ source "drivers/media/platform/sunxi/sun4i-csi/Kconfig" source "drivers/media/platform/sunxi/sun6i-csi/Kconfig" +source "drivers/media/platform/sunxi/sun6i-mipi-csi2/Kconfig" diff --git a/drivers/media/platform/sunxi/Makefile b/drivers/media/platform/sunxi/Makefile index fc537c9f5ca9..887a7cae8fca 100644 --- a/drivers/media/platform/sunxi/Makefile +++ b/drivers/media/platform/sunxi/Makefile @@ -2,5 +2,6 @@ obj-y += sun4i-csi/ obj-y += sun6i-csi/ +obj-y += sun6i-mipi-csi2/ obj-y += sun8i-di/ obj-y += sun8i-rotate/ diff --git a/drivers/media/platform/sunxi/sun6i-mipi-csi2/Kconfig b/drivers/media/platform/sunxi/sun6i-mipi-csi2/Kconfig new file mode 100644 index 000000000000..47f1bb0779a8 --- /dev/null +++ b/drivers/media/platform/sunxi/sun6i-mipi-csi2/Kconfig @@ -0,0 +1,12 @@ +# SPDX-License-Identifier: GPL-2.0-only +config VIDEO_SUN6I_MIPI_CSI2 + tristate "Allwinner A31 MIPI CSI-2 Controller Driver" + depends on ARCH_SUNXI || COMPILE_TEST + depends on PM && COMMON_CLK && VIDEO_V4L2 + select REGMAP_MMIO + select PHY_SUN6I_MIPI_DPHY + select MEDIA_CONTROLLER + select VIDEO_V4L2_SUBDEV_API + select V4L2_FWNODE + help + Support for the Allwinner A31 MIPI CSI-2 Controller. diff --git a/drivers/media/platform/sunxi/sun6i-mipi-csi2/Makefile b/drivers/media/platform/sunxi/sun6i-mipi-csi2/Makefile new file mode 100644 index 000000000000..14e4e03818b5 --- /dev/null +++ b/drivers/media/platform/sunxi/sun6i-mipi-csi2/Makefile @@ -0,0 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only +sun6i-mipi-csi2-y += sun6i_mipi_csi2.o + +obj-$(CONFIG_VIDEO_SUN6I_MIPI_CSI2) += sun6i-mipi-csi2.o diff --git a/drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c b/drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c new file mode 100644 index 000000000000..69186f0c35c2 --- /dev/null +++ b/drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c @@ -0,0 +1,600 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2020 Bootlin + * Author: Paul Kocialkowski + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "sun6i_mipi_csi2.h" + +#define MODULE_NAME "sun6i-mipi-csi2" + +static const u32 sun6i_mipi_csi2_mbus_codes[] = { + MEDIA_BUS_FMT_SBGGR8_1X8, + MEDIA_BUS_FMT_SGBRG8_1X8, + MEDIA_BUS_FMT_SGRBG8_1X8, + MEDIA_BUS_FMT_SRGGB8_1X8, + MEDIA_BUS_FMT_SBGGR10_1X10, + MEDIA_BUS_FMT_SGBRG10_1X10, + MEDIA_BUS_FMT_SGRBG10_1X10, + MEDIA_BUS_FMT_SRGGB10_1X10, +}; + +/* Video */ + +static int sun6i_mipi_csi2_s_stream(struct v4l2_subdev *subdev, int on) +{ + struct sun6i_mipi_csi2_video *video = + sun6i_mipi_csi2_subdev_video(subdev); + struct sun6i_mipi_csi2_dev *cdev = sun6i_mipi_csi2_video_dev(video); + struct v4l2_subdev *remote_subdev = video->remote_subdev; + struct v4l2_fwnode_bus_mipi_csi2 *bus_mipi_csi2 = + &video->endpoint.bus.mipi_csi2; + union phy_configure_opts dphy_opts = { 0 }; + struct phy_configure_opts_mipi_dphy *dphy_cfg = &dphy_opts.mipi_dphy; + struct regmap *regmap = cdev->regmap; + struct v4l2_ctrl *ctrl; + unsigned int lanes_count; + unsigned int bpp; + unsigned long pixel_rate; + u8 data_type = 0; + u32 version = 0; + /* Initialize to 0 to use both in disable label (ret != 0) and off. */ + int ret = 0; + + if (!remote_subdev) + return -ENODEV; + + if (!on) { + v4l2_subdev_call(remote_subdev, video, s_stream, 0); + goto disable; + } + + switch (video->mbus_format.code) { + case MEDIA_BUS_FMT_SBGGR8_1X8: + case MEDIA_BUS_FMT_SGBRG8_1X8: + case MEDIA_BUS_FMT_SGRBG8_1X8: + case MEDIA_BUS_FMT_SRGGB8_1X8: + data_type = MIPI_CSI2_DATA_TYPE_RAW8; + bpp = 8; + break; + case MEDIA_BUS_FMT_SBGGR10_1X10: + case MEDIA_BUS_FMT_SGBRG10_1X10: + case MEDIA_BUS_FMT_SGRBG10_1X10: + case MEDIA_BUS_FMT_SRGGB10_1X10: + data_type = MIPI_CSI2_DATA_TYPE_RAW10; + bpp = 10; + break; + default: + return -EINVAL; + } + + /* Sensor pixel rate */ + + ctrl = v4l2_ctrl_find(remote_subdev->ctrl_handler, V4L2_CID_PIXEL_RATE); + if (!ctrl) { + dev_err(cdev->dev, + "%s: no MIPI CSI-2 pixel rate from the sensor\n", + __func__); + return -ENODEV; + } + + pixel_rate = (unsigned long)v4l2_ctrl_g_ctrl_int64(ctrl); + if (!pixel_rate) { + dev_err(cdev->dev, + "%s: zero MIPI CSI-2 pixel rate from the sensor\n", + __func__); + return -ENODEV; + } + + /* Power management */ + + ret = pm_runtime_get_sync(cdev->dev); + if (ret < 0) { + pm_runtime_put_noidle(cdev->dev); + return ret; + } + + /* D-PHY configuration */ + + lanes_count = bus_mipi_csi2->num_data_lanes; + phy_mipi_dphy_get_default_config(pixel_rate, bpp, lanes_count, + dphy_cfg); + + /* + * Note that our hardware is using DDR, which is not taken in account by + * phy_mipi_dphy_get_default_config when calculating hs_clk_rate from + * the pixel rate, lanes count and bpp. + * + * The resulting clock rate is basically the symbol rate over the whole + * link. The actual clock rate is calculated with division by two since + * DDR samples both on rising and falling edges. + */ + + dev_dbg(cdev->dev, "A31 MIPI CSI-2 config:\n"); + dev_dbg(cdev->dev, "%ld pixels/s, %u bits/pixel, %lu Hz clock\n", + pixel_rate, bpp, dphy_cfg->hs_clk_rate / 2); + + ret = phy_reset(cdev->dphy); + if (ret) { + dev_err(cdev->dev, "failed to reset MIPI D-PHY\n"); + goto error_pm; + } + + ret = phy_set_mode_ext(cdev->dphy, PHY_MODE_MIPI_DPHY, + PHY_MIPI_DPHY_SUBMODE_RX); + if (ret) { + dev_err(cdev->dev, "failed to set MIPI D-PHY mode\n"); + goto error_pm; + } + + ret = phy_configure(cdev->dphy, &dphy_opts); + if (ret) { + dev_err(cdev->dev, "failed to configure MIPI D-PHY\n"); + goto error_pm; + } + + ret = phy_power_on(cdev->dphy); + if (ret) { + dev_err(cdev->dev, "failed to power on MIPI D-PHY\n"); + goto error_pm; + } + + /* MIPI CSI-2 controller setup */ + + /* + * The enable flow in the Allwinner BSP is a bit different: the enable + * and reset bits are set together before starting the CSI controller. + * + * In mainline we enable the CSI controller first (due to subdev logic). + * One reliable way to make this work is to deassert reset, configure + * registers and enable the controller when everything's ready. + * + * However, setting the version enable bit and removing it afterwards + * appears necessary for capture to work reliably, while replacing it + * with a delay doesn't do the trick. + */ + regmap_write(regmap, SUN6I_MIPI_CSI2_CTL_REG, + SUN6I_MIPI_CSI2_CTL_RESET_N | + SUN6I_MIPI_CSI2_CTL_VERSION_EN | + SUN6I_MIPI_CSI2_CTL_UNPK_EN); + + regmap_read(regmap, SUN6I_MIPI_CSI2_VERSION_REG, &version); + + regmap_update_bits(regmap, SUN6I_MIPI_CSI2_CTL_REG, + SUN6I_MIPI_CSI2_CTL_VERSION_EN, 0); + + dev_dbg(cdev->dev, "A31 MIPI CSI-2 version: %04x\n", version); + + regmap_write(regmap, SUN6I_MIPI_CSI2_CFG_REG, + SUN6I_MIPI_CSI2_CFG_CHANNEL_MODE(1) | + SUN6I_MIPI_CSI2_CFG_LANE_COUNT(lanes_count)); + + /* + * Our MIPI CSI-2 controller has internal channels that can be + * configured to match a specific MIPI CSI-2 virtual channel and/or + * a specific data type. Each internal channel can be piped to an + * internal channel of the CSI controller. + * + * We set virtual channel numbers to all channels to make sure that + * virtual channel 0 goes to CSI channel 0 only. + */ + regmap_write(regmap, SUN6I_MIPI_CSI2_VCDT_RX_REG, + SUN6I_MIPI_CSI2_VCDT_RX_CH_VC(3, 3) | + SUN6I_MIPI_CSI2_VCDT_RX_CH_VC(2, 2) | + SUN6I_MIPI_CSI2_VCDT_RX_CH_VC(1, 1) | + SUN6I_MIPI_CSI2_VCDT_RX_CH_VC(0, 0) | + SUN6I_MIPI_CSI2_VCDT_RX_CH_DT(0, data_type)); + + regmap_update_bits(regmap, SUN6I_MIPI_CSI2_CTL_REG, + SUN6I_MIPI_CSI2_CTL_EN, SUN6I_MIPI_CSI2_CTL_EN); + + ret = v4l2_subdev_call(remote_subdev, video, s_stream, 1); + if (ret) + goto disable; + + return 0; + +disable: + regmap_update_bits(regmap, SUN6I_MIPI_CSI2_CTL_REG, + SUN6I_MIPI_CSI2_CTL_EN, 0); + + phy_power_off(cdev->dphy); + +error_pm: + pm_runtime_put(cdev->dev); + + return ret; +} + +static const struct v4l2_subdev_video_ops sun6i_mipi_csi2_subdev_video_ops = { + .s_stream = sun6i_mipi_csi2_s_stream, +}; + +/* Pad */ + +static int +sun6i_mipi_csi2_enum_mbus_code(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *config, + struct v4l2_subdev_mbus_code_enum *code_enum) +{ + if (code_enum->index >= ARRAY_SIZE(sun6i_mipi_csi2_mbus_codes)) + return -EINVAL; + + code_enum->code = sun6i_mipi_csi2_mbus_codes[code_enum->index]; + + return 0; +} + +static int sun6i_mipi_csi2_get_fmt(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *config, + struct v4l2_subdev_format *format) +{ + struct sun6i_mipi_csi2_video *video = + sun6i_mipi_csi2_subdev_video(subdev); + struct v4l2_mbus_framefmt *mbus_format = &format->format; + + if (format->which == V4L2_SUBDEV_FORMAT_TRY) + *mbus_format = *v4l2_subdev_get_try_format(subdev, config, + format->pad); + else + *mbus_format = video->mbus_format; + + return 0; +} + +static int sun6i_mipi_csi2_set_fmt(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *config, + struct v4l2_subdev_format *format) +{ + struct sun6i_mipi_csi2_video *video = + sun6i_mipi_csi2_subdev_video(subdev); + struct v4l2_mbus_framefmt *mbus_format = &format->format; + + if (format->which == V4L2_SUBDEV_FORMAT_TRY) + *v4l2_subdev_get_try_format(subdev, config, format->pad) = + *mbus_format; + else + video->mbus_format = *mbus_format; + + return 0; +} + +static const struct v4l2_subdev_pad_ops sun6i_mipi_csi2_subdev_pad_ops = { + .enum_mbus_code = sun6i_mipi_csi2_enum_mbus_code, + .get_fmt = sun6i_mipi_csi2_get_fmt, + .set_fmt = sun6i_mipi_csi2_set_fmt, +}; + +/* Subdev */ + +static const struct v4l2_subdev_ops sun6i_mipi_csi2_subdev_ops = { + .video = &sun6i_mipi_csi2_subdev_video_ops, + .pad = &sun6i_mipi_csi2_subdev_pad_ops, +}; + +/* Notifier */ + +static int +sun6i_mipi_csi2_notifier_bound(struct v4l2_async_notifier *notifier, + struct v4l2_subdev *remote_subdev, + struct v4l2_async_subdev *remote_subdev_async) +{ + struct v4l2_subdev *subdev = notifier->sd; + struct sun6i_mipi_csi2_video *video = + sun6i_mipi_csi2_subdev_video(subdev); + struct sun6i_mipi_csi2_dev *cdev = sun6i_mipi_csi2_video_dev(video); + int source_pad; + int ret; + + source_pad = media_entity_get_fwnode_pad(&remote_subdev->entity, + remote_subdev->fwnode, + MEDIA_PAD_FL_SOURCE); + if (source_pad < 0) + return source_pad; + + ret = media_create_pad_link(&remote_subdev->entity, source_pad, + &subdev->entity, 0, + MEDIA_LNK_FL_ENABLED | + MEDIA_LNK_FL_IMMUTABLE); + if (ret) { + dev_err(cdev->dev, "failed to create %s:%u -> %s:%u link\n", + remote_subdev->entity.name, source_pad, + subdev->entity.name, 0); + return ret; + } + + video->remote_subdev = remote_subdev; + + return 0; +} + +static const +struct v4l2_async_notifier_operations sun6i_mipi_csi2_notifier_ops = { + .bound = sun6i_mipi_csi2_notifier_bound, +}; + +/* Media Entity */ + +static const struct media_entity_operations sun6i_mipi_csi2_entity_ops = { + .link_validate = v4l2_subdev_link_validate, +}; + +/* Base Driver */ + +static int sun6i_mipi_csi2_suspend(struct device *dev) +{ + struct sun6i_mipi_csi2_dev *cdev = dev_get_drvdata(dev); + + clk_disable_unprepare(cdev->clk_mod); + clk_disable_unprepare(cdev->clk_bus); + reset_control_assert(cdev->reset); + + return 0; +} + +static int sun6i_mipi_csi2_resume(struct device *dev) +{ + struct sun6i_mipi_csi2_dev *cdev = dev_get_drvdata(dev); + int ret; + + ret = reset_control_deassert(cdev->reset); + if (ret) { + dev_err(cdev->dev, "failed to deassert reset\n"); + return ret; + } + + ret = clk_prepare_enable(cdev->clk_bus); + if (ret) { + dev_err(cdev->dev, "failed to enable bus clock\n"); + goto error_reset; + } + + ret = clk_prepare_enable(cdev->clk_mod); + if (ret) { + dev_err(cdev->dev, "failed to enable module clock\n"); + goto error_clk_bus; + } + + return 0; + +error_clk_bus: + clk_disable_unprepare(cdev->clk_bus); + +error_reset: + reset_control_assert(cdev->reset); + + return ret; +} + +static int sun6i_mipi_csi2_v4l2_setup(struct sun6i_mipi_csi2_dev *cdev) +{ + struct sun6i_mipi_csi2_video *video = &cdev->video; + struct v4l2_subdev *subdev = &video->subdev; + struct v4l2_async_notifier *notifier = &video->notifier; + struct fwnode_handle *handle = NULL; + struct v4l2_fwnode_endpoint *endpoint; + struct v4l2_async_subdev *subdev_async; + int ret; + + /* Subdev */ + + v4l2_subdev_init(subdev, &sun6i_mipi_csi2_subdev_ops); + subdev->dev = cdev->dev; + subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + strscpy(subdev->name, MODULE_NAME, sizeof(subdev->name)); + v4l2_set_subdevdata(subdev, cdev); + + /* Entity */ + + subdev->entity.function = MEDIA_ENT_F_VID_IF_BRIDGE; + subdev->entity.ops = &sun6i_mipi_csi2_entity_ops; + + /* Pads */ + + video->pads[0].flags = MEDIA_PAD_FL_SINK; + video->pads[1].flags = MEDIA_PAD_FL_SOURCE; + + ret = media_entity_pads_init(&subdev->entity, 2, video->pads); + if (ret) + return ret; + + /* Endpoint */ + + handle = fwnode_graph_get_endpoint_by_id(dev_fwnode(cdev->dev), 0, 0, + FWNODE_GRAPH_ENDPOINT_NEXT); + if (!handle) { + ret = -ENODEV; + goto error_media_entity; + } + + endpoint = &video->endpoint; + endpoint->bus_type = V4L2_MBUS_CSI2_DPHY; + + ret = v4l2_fwnode_endpoint_parse(handle, endpoint); + fwnode_handle_put(handle); + if (ret) + goto error_media_entity; + + /* Notifier */ + + v4l2_async_notifier_init(notifier); + + subdev_async = &video->subdev_async; + ret = v4l2_async_notifier_add_fwnode_remote_subdev(notifier, handle, + subdev_async); + if (ret) + goto error_media_entity; + + fwnode_handle_put(handle); + handle = NULL; + + video->notifier.ops = &sun6i_mipi_csi2_notifier_ops; + + ret = v4l2_async_subdev_notifier_register(subdev, notifier); + if (ret < 0) + goto error_notifier; + + /* Runtime PM */ + + pm_runtime_enable(cdev->dev); + pm_runtime_set_suspended(cdev->dev); + + /* Subdev */ + + ret = v4l2_async_register_subdev(subdev); + if (ret < 0) + goto error_pm; + + return 0; + +error_pm: + pm_runtime_disable(cdev->dev); + v4l2_async_notifier_unregister(notifier); + +error_notifier: + v4l2_async_notifier_cleanup(notifier); + +error_media_entity: + if (handle) + fwnode_handle_put(handle); + + media_entity_cleanup(&subdev->entity); + + return ret; +} + +static int sun6i_mipi_csi2_v4l2_teardown(struct sun6i_mipi_csi2_dev *cdev) +{ + struct sun6i_mipi_csi2_video *video = &cdev->video; + struct v4l2_subdev *subdev = &video->subdev; + struct v4l2_async_notifier *notifier = &video->notifier; + + v4l2_async_unregister_subdev(subdev); + pm_runtime_disable(cdev->dev); + v4l2_async_notifier_unregister(notifier); + v4l2_async_notifier_cleanup(notifier); + media_entity_cleanup(&subdev->entity); + v4l2_device_unregister_subdev(subdev); + + return 0; +} + +static const struct regmap_config sun6i_mipi_csi2_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .max_register = 0x400, +}; + +static int sun6i_mipi_csi2_probe(struct platform_device *pdev) +{ + struct sun6i_mipi_csi2_dev *cdev; + struct resource *res; + void __iomem *io_base; + int ret; + + cdev = devm_kzalloc(&pdev->dev, sizeof(*cdev), GFP_KERNEL); + if (!cdev) + return -ENOMEM; + + cdev->dev = &pdev->dev; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + io_base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(io_base)) + return PTR_ERR(io_base); + + cdev->regmap = devm_regmap_init_mmio(&pdev->dev, io_base, + &sun6i_mipi_csi2_regmap_config); + if (IS_ERR(cdev->regmap)) { + dev_err(&pdev->dev, "failed to init register map\n"); + return PTR_ERR(cdev->regmap); + } + + cdev->clk_bus = devm_clk_get(&pdev->dev, "bus"); + if (IS_ERR(cdev->clk_bus)) { + dev_err(&pdev->dev, "failed to acquire bus clock\n"); + return PTR_ERR(cdev->clk_bus); + } + + cdev->clk_mod = devm_clk_get(&pdev->dev, "mod"); + if (IS_ERR(cdev->clk_mod)) { + dev_err(&pdev->dev, "failed to acquire mod clock\n"); + return PTR_ERR(cdev->clk_mod); + } + + cdev->reset = devm_reset_control_get_shared(&pdev->dev, NULL); + if (IS_ERR(cdev->reset)) { + dev_err(&pdev->dev, "failed to get reset controller\n"); + return PTR_ERR(cdev->reset); + } + + cdev->dphy = devm_phy_get(&pdev->dev, "dphy"); + if (IS_ERR(cdev->dphy)) { + dev_err(&pdev->dev, "failed to get the MIPI D-PHY\n"); + return PTR_ERR(cdev->dphy); + } + + ret = phy_init(cdev->dphy); + if (ret) { + dev_err(&pdev->dev, "failed to initialize the MIPI D-PHY\n"); + return ret; + } + + platform_set_drvdata(pdev, cdev); + + ret = sun6i_mipi_csi2_v4l2_setup(cdev); + if (ret) + return ret; + + return 0; +} + +static int sun6i_mipi_csi2_remove(struct platform_device *pdev) +{ + struct sun6i_mipi_csi2_dev *cdev = platform_get_drvdata(pdev); + + phy_exit(cdev->dphy); + + return sun6i_mipi_csi2_v4l2_teardown(cdev); +} + +static const struct dev_pm_ops sun6i_mipi_csi2_pm_ops = { + SET_RUNTIME_PM_OPS(sun6i_mipi_csi2_suspend, sun6i_mipi_csi2_resume, + NULL) +}; + +static const struct of_device_id sun6i_mipi_csi2_of_match[] = { + { .compatible = "allwinner,sun6i-a31-mipi-csi2" }, + {}, +}; +MODULE_DEVICE_TABLE(of, sun6i_mipi_csi2_of_match); + +static struct platform_driver sun6i_mipi_csi2_platform_driver = { + .probe = sun6i_mipi_csi2_probe, + .remove = sun6i_mipi_csi2_remove, + .driver = { + .name = MODULE_NAME, + .of_match_table = of_match_ptr(sun6i_mipi_csi2_of_match), + .pm = &sun6i_mipi_csi2_pm_ops, + }, +}; +module_platform_driver(sun6i_mipi_csi2_platform_driver); + +MODULE_DESCRIPTION("Allwinner A31 MIPI CSI-2 Controller Driver"); +MODULE_AUTHOR("Paul Kocialkowski "); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.h b/drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.h new file mode 100644 index 000000000000..0869dc7db3b5 --- /dev/null +++ b/drivers/media/platform/sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.h @@ -0,0 +1,117 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright 2020 Bootlin + * Author: Paul Kocialkowski + */ + +#ifndef __SUN6I_MIPI_CSI2_H__ +#define __SUN6I_MIPI_CSI2_H__ + +#include +#include +#include +#include +#include + +#define SUN6I_MIPI_CSI2_CTL_REG 0x0 +#define SUN6I_MIPI_CSI2_CTL_RESET_N BIT(31) +#define SUN6I_MIPI_CSI2_CTL_VERSION_EN BIT(30) +#define SUN6I_MIPI_CSI2_CTL_UNPK_EN BIT(1) +#define SUN6I_MIPI_CSI2_CTL_EN BIT(0) +#define SUN6I_MIPI_CSI2_CFG_REG 0x4 +#define SUN6I_MIPI_CSI2_CFG_CHANNEL_MODE(v) ((((v) - 1) << 8) & \ + GENMASK(9, 8)) +#define SUN6I_MIPI_CSI2_CFG_LANE_COUNT(v) (((v) - 1) & GENMASK(1, 0)) +#define SUN6I_MIPI_CSI2_VCDT_RX_REG 0x8 +#define SUN6I_MIPI_CSI2_VCDT_RX_CH_VC(ch, vc) (((vc) & GENMASK(1, 0)) << \ + ((ch) * 8 + 6)) +#define SUN6I_MIPI_CSI2_VCDT_RX_CH_DT(ch, t) (((t) & GENMASK(5, 0)) << \ + ((ch) * 8)) +#define SUN6I_MIPI_CSI2_RX_PKT_NUM_REG 0xc + +#define SUN6I_MIPI_CSI2_VERSION_REG 0x3c + +#define SUN6I_MIPI_CSI2_CH_BASE 0x1000 +#define SUN6I_MIPI_CSI2_CH_OFFSET 0x100 + +#define SUN6I_MIPI_CSI2_CH_CFG_REG 0x40 +#define SUN6I_MIPI_CSI2_CH_INT_EN_REG 0x50 +#define SUN6I_MIPI_CSI2_CH_INT_EN_EOT_ERR BIT(29) +#define SUN6I_MIPI_CSI2_CH_INT_EN_CHKSUM_ERR BIT(28) +#define SUN6I_MIPI_CSI2_CH_INT_EN_ECC_WRN BIT(27) +#define SUN6I_MIPI_CSI2_CH_INT_EN_ECC_ERR BIT(26) +#define SUN6I_MIPI_CSI2_CH_INT_EN_LINE_SYNC_ERR BIT(25) +#define SUN6I_MIPI_CSI2_CH_INT_EN_FRAME_SYNC_ERR BIT(24) +#define SUN6I_MIPI_CSI2_CH_INT_EN_EMB_DATA BIT(18) +#define SUN6I_MIPI_CSI2_CH_INT_EN_PF BIT(17) +#define SUN6I_MIPI_CSI2_CH_INT_EN_PH_UPDATE BIT(16) +#define SUN6I_MIPI_CSI2_CH_INT_EN_LINE_START_SYNC BIT(11) +#define SUN6I_MIPI_CSI2_CH_INT_EN_LINE_END_SYNC BIT(10) +#define SUN6I_MIPI_CSI2_CH_INT_EN_FRAME_START_SYNC BIT(9) +#define SUN6I_MIPI_CSI2_CH_INT_EN_FRAME_END_SYNC BIT(8) +#define SUN6I_MIPI_CSI2_CH_INT_EN_FIFO_OVER BIT(0) + +#define SUN6I_MIPI_CSI2_CH_INT_PD_REG 0x58 +#define SUN6I_MIPI_CSI2_CH_INT_PD_EOT_ERR BIT(29) +#define SUN6I_MIPI_CSI2_CH_INT_PD_CHKSUM_ERR BIT(28) +#define SUN6I_MIPI_CSI2_CH_INT_PD_ECC_WRN BIT(27) +#define SUN6I_MIPI_CSI2_CH_INT_PD_ECC_ERR BIT(26) +#define SUN6I_MIPI_CSI2_CH_INT_PD_LINE_SYNC_ERR BIT(25) +#define SUN6I_MIPI_CSI2_CH_INT_PD_FRAME_SYNC_ERR BIT(24) +#define SUN6I_MIPI_CSI2_CH_INT_PD_EMB_DATA BIT(18) +#define SUN6I_MIPI_CSI2_CH_INT_PD_PF BIT(17) +#define SUN6I_MIPI_CSI2_CH_INT_PD_PH_UPDATE BIT(16) +#define SUN6I_MIPI_CSI2_CH_INT_PD_LINE_START_SYNC BIT(11) +#define SUN6I_MIPI_CSI2_CH_INT_PD_LINE_END_SYNC BIT(10) +#define SUN6I_MIPI_CSI2_CH_INT_PD_FRAME_START_SYNC BIT(9) +#define SUN6I_MIPI_CSI2_CH_INT_PD_FRAME_END_SYNC BIT(8) +#define SUN6I_MIPI_CSI2_CH_INT_PD_FIFO_OVER BIT(0) + +#define SUN6I_MIPI_CSI2_CH_DT_TRIGGER_REG 0x60 +#define SUN6I_MIPI_CSI2_CH_CUR_PH_REG 0x70 +#define SUN6I_MIPI_CSI2_CH_ECC_REG 0x74 +#define SUN6I_MIPI_CSI2_CH_CKS_REG 0x78 +#define SUN6I_MIPI_CSI2_CH_FRAME_NUM_REG 0x7c +#define SUN6I_MIPI_CSI2_CH_LINE_NUM_REG 0x80 + +#define SUN6I_MIPI_CSI2_CH_REG(reg, ch) \ + (SUN6I_MIPI_CSI2_CH_BASE + SUN6I_MIPI_CSI2_CH_OFFSET * (ch) + (reg)) + +enum mipi_csi2_data_type { + MIPI_CSI2_DATA_TYPE_RAW8 = 0x2a, + MIPI_CSI2_DATA_TYPE_RAW10 = 0x2b, + MIPI_CSI2_DATA_TYPE_RAW12 = 0x2c, +}; + +struct sun6i_mipi_csi2_video { + struct v4l2_fwnode_endpoint endpoint; + struct v4l2_subdev subdev; + struct media_pad pads[2]; + + struct v4l2_async_subdev subdev_async; + struct v4l2_async_notifier notifier; + + struct v4l2_subdev *remote_subdev; + + struct v4l2_mbus_framefmt mbus_format; +}; + +struct sun6i_mipi_csi2_dev { + struct device *dev; + + struct regmap *regmap; + struct clk *clk_bus; + struct clk *clk_mod; + struct reset_control *reset; + struct phy *dphy; + + struct sun6i_mipi_csi2_video video; +}; + +#define sun6i_mipi_csi2_subdev_video(s) \ + container_of(s, struct sun6i_mipi_csi2_video, subdev) + +#define sun6i_mipi_csi2_video_dev(v) \ + container_of(v, struct sun6i_mipi_csi2_dev, video) + +#endif /* __SUN6I_MIPI_CSI2_H__ */ From patchwork Fri Jan 15 20:01:36 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 12023981 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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 62693C433E0 for ; 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Fri, 15 Jan 2021 20:02:16 +0000 (UTC) From: Paul Kocialkowski To: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, devel@driverdev.osuosl.org, linux-sunxi@googlegroups.com Subject: [PATCH v5 11/16] ARM: dts: sun8i: v3s: Add nodes for MIPI CSI-2 support Date: Fri, 15 Jan 2021 21:01:36 +0100 Message-Id: <20210115200141.1397785-12-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> References: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210115_150219_738355_F3DBC3B3 X-CRM114-Status: GOOD ( 15.09 ) 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: Jernej Skrabec , Dafna Hirschfeld , Philipp Zabel , Jonathan Corbet , Thomas Petazzoni , Greg Kroah-Hartman , Helen Koike , Vinod Koul , Maxime Ripard , Kishon Vijay Abraham I , Paul Kocialkowski , Chen-Yu Tsai , Rob Herring , Hans Verkuil , Ezequiel Garcia , Yong Deng , Sakari Ailus , Mauro Carvalho Chehab , kevin.lhopital@hotmail.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org MIPI CSI-2 is supported on the V3s with an A31-based MIPI CSI-2 bridge controller. The controller uses a separate D-PHY, which is the same that is otherwise used for MIPI DSI, but used in Rx mode. On the V3s, the CSI0 controller is dedicated to MIPI CSI-2 as it does not have access to any parallel interface pins. Add all the necessary nodes (CSI0, MIPI CSI-2 bridge and D-PHY) to support the MIPI CSI-2 interface. Note that a fwnode graph link is created between CSI0 and MIPI CSI-2 even when no sensor is connected. This will result in a probe failure for the controller as long as no sensor is connected but this is fine since no other interface is available. Signed-off-by: Paul Kocialkowski --- arch/arm/boot/dts/sun8i-v3s.dtsi | 68 ++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) diff --git a/arch/arm/boot/dts/sun8i-v3s.dtsi b/arch/arm/boot/dts/sun8i-v3s.dtsi index f8f19d8fa795..7eae0295ba73 100644 --- a/arch/arm/boot/dts/sun8i-v3s.dtsi +++ b/arch/arm/boot/dts/sun8i-v3s.dtsi @@ -530,6 +530,31 @@ spi0: spi@1c68000 { #size-cells = <0>; }; + csi0: camera@1cb0000 { + compatible = "allwinner,sun8i-v3s-csi"; + reg = <0x01cb0000 0x1000>; + interrupts = ; + clocks = <&ccu CLK_BUS_CSI>, + <&ccu CLK_CSI1_SCLK>, + <&ccu CLK_DRAM_CSI>; + clock-names = "bus", "mod", "ram"; + resets = <&ccu RST_BUS_CSI>; + status = "disabled"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@1 { + reg = <1>; + + csi0_in_mipi_csi2: endpoint { + remote-endpoint = <&mipi_csi2_out_csi0>; + }; + }; + }; + }; + csi1: camera@1cb4000 { compatible = "allwinner,sun8i-v3s-csi"; reg = <0x01cb4000 0x3000>; @@ -552,5 +577,48 @@ gic: interrupt-controller@1c81000 { #interrupt-cells = <3>; interrupts = ; }; + + mipi_csi2: csi@1cb1000 { + compatible = "allwinner,sun8i-v3s-mipi-csi2", + "allwinner,sun6i-a31-mipi-csi2"; + reg = <0x01cb1000 0x1000>; + interrupts = ; + clocks = <&ccu CLK_BUS_CSI>, + <&ccu CLK_CSI1_SCLK>; + clock-names = "bus", "mod"; + resets = <&ccu RST_BUS_CSI>; + status = "disabled"; + + phys = <&dphy>; + phy-names = "dphy"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + mipi_csi2_in: port@0 { + reg = <0>; + }; + + mipi_csi2_out: port@1 { + reg = <1>; + + mipi_csi2_out_csi0: endpoint { + remote-endpoint = <&csi0_in_mipi_csi2>; + }; + }; + }; + }; + + dphy: d-phy@1cb2000 { + compatible = "allwinner,sun6i-a31-mipi-dphy"; + reg = <0x01cb2000 0x1000>; + clocks = <&ccu CLK_BUS_CSI>, + <&ccu CLK_MIPI_CSI>; + clock-names = "bus", "mod"; + resets = <&ccu RST_BUS_CSI>; + status = "disabled"; + #phy-cells = <0>; + }; }; }; From patchwork Fri Jan 15 20:01:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 12023983 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=-19.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY,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 9C05FC433E0 for ; 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Fri, 15 Jan 2021 20:02:18 +0000 (UTC) From: Paul Kocialkowski To: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, devel@driverdev.osuosl.org, linux-sunxi@googlegroups.com Subject: [PATCH v5 12/16] MAINTAINERS: Add entry for the Allwinner A31 MIPI CSI-2 bridge Date: Fri, 15 Jan 2021 21:01:37 +0100 Message-Id: <20210115200141.1397785-13-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> References: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210115_150221_843769_D88B0884 X-CRM114-Status: GOOD ( 10.63 ) 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: Jernej Skrabec , Dafna Hirschfeld , Philipp Zabel , Jonathan Corbet , Thomas Petazzoni , Greg Kroah-Hartman , Helen Koike , Vinod Koul , Maxime Ripard , Kishon Vijay Abraham I , Paul Kocialkowski , Chen-Yu Tsai , Rob Herring , Hans Verkuil , Ezequiel Garcia , Yong Deng , Sakari Ailus , Mauro Carvalho Chehab , kevin.lhopital@hotmail.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add myself as maintainer of the A31 MIPI CSI-2 bridge media driver. Signed-off-by: Paul Kocialkowski --- MAINTAINERS | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 57f9e3047227..a41c41f6387c 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -710,6 +710,14 @@ T: git git://linuxtv.org/media_tree.git F: Documentation/devicetree/bindings/media/allwinner,sun4i-a10-csi.yaml F: drivers/media/platform/sunxi/sun4i-csi/ +ALLWINNER A31 MIPI CSI-2 BRIDGE +M: Paul Kocialkowski +L: linux-media@vger.kernel.org +S: Maintained +T: git git://linuxtv.org/media_tree.git +F: Documentation/devicetree/bindings/media/allwinner,sun6i-a31-mipi-csi2.yaml +F: drivers/media/platform/sunxi/sun6i-mipi-csi2/ + ALLWINNER CPUFREQ DRIVER M: Yangtao Li L: linux-pm@vger.kernel.org From patchwork Fri Jan 15 20:01:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 12023989 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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 78919C433E9 for ; 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Fri, 15 Jan 2021 20:02:20 +0000 (UTC) From: Paul Kocialkowski To: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, devel@driverdev.osuosl.org, linux-sunxi@googlegroups.com Subject: [PATCH v5 13/16] dt-bindings: media: Add A83T MIPI CSI-2 bindings documentation Date: Fri, 15 Jan 2021 21:01:38 +0100 Message-Id: <20210115200141.1397785-14-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> References: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210115_150224_040785_94D4FA2B X-CRM114-Status: GOOD ( 14.11 ) 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: Jernej Skrabec , Dafna Hirschfeld , Philipp Zabel , Jonathan Corbet , Thomas Petazzoni , Greg Kroah-Hartman , Helen Koike , Vinod Koul , Maxime Ripard , Kishon Vijay Abraham I , Paul Kocialkowski , Chen-Yu Tsai , Rob Herring , Hans Verkuil , Ezequiel Garcia , Yong Deng , Sakari Ailus , Mauro Carvalho Chehab , kevin.lhopital@hotmail.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This introduces YAML bindings documentation for the A83T MIPI CSI-2 controller. Signed-off-by: Paul Kocialkowski Reviewed-by: Rob Herring --- .../media/allwinner,sun8i-a83t-mipi-csi2.yaml | 147 ++++++++++++++++++ 1 file changed, 147 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/allwinner,sun8i-a83t-mipi-csi2.yaml diff --git a/Documentation/devicetree/bindings/media/allwinner,sun8i-a83t-mipi-csi2.yaml b/Documentation/devicetree/bindings/media/allwinner,sun8i-a83t-mipi-csi2.yaml new file mode 100644 index 000000000000..e607fae7d85e --- /dev/null +++ b/Documentation/devicetree/bindings/media/allwinner,sun8i-a83t-mipi-csi2.yaml @@ -0,0 +1,147 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/allwinner,sun8i-a83t-mipi-csi2.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Allwinner A83T MIPI CSI-2 Device Tree Bindings + +maintainers: + - Paul Kocialkowski + +properties: + compatible: + const: allwinner,sun8i-a83t-mipi-csi2 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + items: + - description: Bus Clock + - description: Module Clock + - description: MIPI-specific Clock + - description: Misc CSI Clock + + clock-names: + items: + - const: bus + - const: mod + - const: mipi + - const: misc + + resets: + maxItems: 1 + + # See ./video-interfaces.txt for details + ports: + type: object + + properties: + port@0: + type: object + description: Input port, connect to a MIPI CSI-2 sensor + + properties: + reg: + const: 0 + + endpoint: + type: object + + properties: + remote-endpoint: true + + clock-lanes: + maxItems: 1 + + data-lanes: + minItems: 1 + maxItems: 4 + + required: + - data-lanes + - remote-endpoint + + required: + - endpoint + + additionalProperties: false + + port@1: + type: object + description: Output port, connect to a CSI controller + + properties: + reg: + const: 1 + + endpoint: + type: object + + properties: + remote-endpoint: true + + required: + - remote-endpoint + + required: + - endpoint + + additionalProperties: false + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + - resets + +additionalProperties: false + +examples: + - | + #include + #include + #include + + mipi_csi2: csi@1cb1000 { + compatible = "allwinner,sun8i-a83t-mipi-csi2"; + reg = <0x01cb1000 0x1000>; + interrupts = ; + clocks = <&ccu CLK_BUS_CSI>, + <&ccu CLK_CSI_SCLK>, + <&ccu CLK_MIPI_CSI>, + <&ccu CLK_CSI_MISC>; + clock-names = "bus", "mod", "mipi", "misc"; + resets = <&ccu RST_BUS_CSI>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + mipi_csi2_in: port@0 { + reg = <0>; + + mipi_csi2_in_ov8865: endpoint { + data-lanes = <1 2 3 4>; + + remote-endpoint = <&ov8865_out_mipi_csi2>; + }; + }; + + mipi_csi2_out: port@1 { + reg = <1>; + + mipi_csi2_out_csi: endpoint { + remote-endpoint = <&csi_in_mipi_csi2>; + }; + }; + }; + }; + +... From patchwork Fri Jan 15 20:01:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 12024025 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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 30F3BC433DB for ; Fri, 15 Jan 2021 20:08:48 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 56AD923603 for ; Fri, 15 Jan 2021 20:08:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 56AD923603 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.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=owmM8IuzxkNrYHBXgCn3Sk6VBmfpC4XfAHVhbYknOJM=; b=A+OdK4ytDfyuAL/V8jKBsFXyo 2z8v1G2BNLrcXJ9LtmxBeDAMJVAXTeOOdYO+vP8dkUTIyHPMd3uhks10euBIgedYqjJ5UhboyoFfE O5WEYdLHmlArY/rb1dvK9Kmd89kdee4WlyR6VzUFzyYfDMPymERqQNOuxQtM4uAPz5OAh0yn9bgTD /sGBYJqxDUOFLMyoiOE7YqvabM5/qGG5uVnt0J14v3V8Kw8ybkIAf1j2MqS90qISlnIQhEWsQohUT vJhuLrk3vRdQPUkZm/my9YvpzezCqQnRTKxA/7UAuvlEA8UTKR2xywYUF0bnmQcnknE2MgZu7BwxC SYJxbDEQA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0VNO-00053x-2f; Fri, 15 Jan 2021 20:07:18 +0000 Received: from mslow2.mail.gandi.net ([217.70.178.242]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0VMw-0004tU-LG for linux-arm-kernel@lists.infradead.org; Fri, 15 Jan 2021 20:07:12 +0000 Received: from relay5-d.mail.gandi.net (unknown [217.70.183.197]) by mslow2.mail.gandi.net (Postfix) with ESMTP id 10FCA3B175A for ; Fri, 15 Jan 2021 20:03:06 +0000 (UTC) X-Originating-IP: 93.29.109.196 Received: from localhost.localdomain (196.109.29.93.rev.sfr.net [93.29.109.196]) (Authenticated sender: paul.kocialkowski@bootlin.com) by relay5-d.mail.gandi.net (Postfix) with ESMTPSA id E120A1C0017; Fri, 15 Jan 2021 20:02:22 +0000 (UTC) From: Paul Kocialkowski To: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, devel@driverdev.osuosl.org, linux-sunxi@googlegroups.com Subject: [PATCH v5 14/16] media: sunxi: Add support for the A83T MIPI CSI-2 controller Date: Fri, 15 Jan 2021 21:01:39 +0100 Message-Id: <20210115200141.1397785-15-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> References: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210115_150650_970146_935BBDA8 X-CRM114-Status: GOOD ( 32.56 ) 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: Jernej Skrabec , Dafna Hirschfeld , Philipp Zabel , Jonathan Corbet , Thomas Petazzoni , Greg Kroah-Hartman , Helen Koike , Vinod Koul , Maxime Ripard , Kishon Vijay Abraham I , Paul Kocialkowski , Chen-Yu Tsai , Rob Herring , Hans Verkuil , Ezequiel Garcia , Yong Deng , Sakari Ailus , Mauro Carvalho Chehab , kevin.lhopital@hotmail.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The A83T supports MIPI CSI-2 with a composite controller, covering both the protocol logic and the D-PHY implementation. This controller seems to be found on the A83T only and probably was abandoned since. This implementation splits the protocol and D-PHY registers and uses the PHY framework internally. The D-PHY is not registered as a standalone PHY driver since it cannot be used with any other controller. There are a few notable points about the controller: - The initialisation sequence involes writing specific magic init values that do not seem to make any particular sense given the concerned register fields; - Interrupts appear to be hitting regardless of the interrupt mask registers, which can cause a serious flood when transmission errors occur. Only 8-bit and 10-bit Bayer formats are currently supported. While up to 4 internal channels to the CSI controller exist, only one is currently supported by this implementation. This work is based on the first version of the driver submitted by Kévin L'hôpital, which was adapted to mainline from the Allwinner BSP. This version integrates MIPI CSI-2 support as a standalone V4L2 subdev instead of merging it in the sun6i-csi driver. It was tested on a Banana Pi M3 board with an OV8865 sensor in a 4-lane configuration. Signed-off-by: Paul Kocialkowski Acked-by: Maxime Ripard --- drivers/media/platform/sunxi/Kconfig | 1 + drivers/media/platform/sunxi/Makefile | 1 + .../sunxi/sun8i-a83t-mipi-csi2/Kconfig | 11 + .../sunxi/sun8i-a83t-mipi-csi2/Makefile | 4 + .../sun8i-a83t-mipi-csi2/sun8i_a83t_dphy.c | 92 +++ .../sun8i-a83t-mipi-csi2/sun8i_a83t_dphy.h | 39 + .../sun8i_a83t_mipi_csi2.c | 666 ++++++++++++++++++ .../sun8i_a83t_mipi_csi2.h | 197 ++++++ 8 files changed, 1011 insertions(+) create mode 100644 drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/Kconfig create mode 100644 drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/Makefile create mode 100644 drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_dphy.c create mode 100644 drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_dphy.h create mode 100644 drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.c create mode 100644 drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.h diff --git a/drivers/media/platform/sunxi/Kconfig b/drivers/media/platform/sunxi/Kconfig index 9684e07454ad..db4c07be7e4c 100644 --- a/drivers/media/platform/sunxi/Kconfig +++ b/drivers/media/platform/sunxi/Kconfig @@ -3,3 +3,4 @@ source "drivers/media/platform/sunxi/sun4i-csi/Kconfig" source "drivers/media/platform/sunxi/sun6i-csi/Kconfig" source "drivers/media/platform/sunxi/sun6i-mipi-csi2/Kconfig" +source "drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/Kconfig" diff --git a/drivers/media/platform/sunxi/Makefile b/drivers/media/platform/sunxi/Makefile index 887a7cae8fca..9aa01cb01883 100644 --- a/drivers/media/platform/sunxi/Makefile +++ b/drivers/media/platform/sunxi/Makefile @@ -3,5 +3,6 @@ obj-y += sun4i-csi/ obj-y += sun6i-csi/ obj-y += sun6i-mipi-csi2/ +obj-y += sun8i-a83t-mipi-csi2/ obj-y += sun8i-di/ obj-y += sun8i-rotate/ diff --git a/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/Kconfig b/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/Kconfig new file mode 100644 index 000000000000..60e7a9c41065 --- /dev/null +++ b/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/Kconfig @@ -0,0 +1,11 @@ +# SPDX-License-Identifier: GPL-2.0-only +config VIDEO_SUN8I_A83T_MIPI_CSI2 + tristate "Allwinner A83T MIPI CSI-2 Controller and D-PHY Driver" + depends on ARCH_SUNXI || COMPILE_TEST + depends on PM && COMMON_CLK && VIDEO_V4L2 + select REGMAP_MMIO + select MEDIA_CONTROLLER + select VIDEO_V4L2_SUBDEV_API + select V4L2_FWNODE + help + Support for the Allwinner A83T MIPI CSI-2 Controller and D-PHY. diff --git a/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/Makefile b/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/Makefile new file mode 100644 index 000000000000..1427d15a879a --- /dev/null +++ b/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/Makefile @@ -0,0 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only +sun8i-a83t-mipi-csi2-y += sun8i_a83t_mipi_csi2.o sun8i_a83t_dphy.o + +obj-$(CONFIG_VIDEO_SUN8I_A83T_MIPI_CSI2) += sun8i-a83t-mipi-csi2.o diff --git a/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_dphy.c b/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_dphy.c new file mode 100644 index 000000000000..c380065eb7c9 --- /dev/null +++ b/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_dphy.c @@ -0,0 +1,92 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2020 Bootlin + * Author: Paul Kocialkowski + */ + +#include +#include + +#include "sun8i_a83t_dphy.h" +#include "sun8i_a83t_mipi_csi2.h" + +static int sun8i_a83t_dphy_set_mode(struct phy *dphy, enum phy_mode mode, + int submode) +{ + if (mode != PHY_MODE_MIPI_DPHY || + submode != PHY_MIPI_DPHY_SUBMODE_RX) + return -EINVAL; + + return 0; +}; + +static int sun8i_a83t_dphy_configure(struct phy *dphy, + union phy_configure_opts *opts) +{ + struct sun8i_a83t_mipi_csi2_dev *cdev = phy_get_drvdata(dphy); + int ret; + + ret = phy_mipi_dphy_config_validate(&opts->mipi_dphy); + if (ret) + return ret; + + memcpy(&cdev->dphy_config, opts, sizeof(cdev->dphy_config)); + + return 0; +}; + +static int sun8i_a83t_dphy_power_on(struct phy *dphy) +{ + struct sun8i_a83t_mipi_csi2_dev *cdev = phy_get_drvdata(dphy); + struct regmap *regmap = cdev->regmap; + + regmap_write(regmap, SUN8I_A83T_DPHY_CTRL_REG, + SUN8I_A83T_DPHY_CTRL_RESET_N | + SUN8I_A83T_DPHY_CTRL_SHUTDOWN_N); + + regmap_write(regmap, SUN8I_A83T_DPHY_ANA0_REG, + SUN8I_A83T_DPHY_ANA0_REXT_EN | + SUN8I_A83T_DPHY_ANA0_RINT(2) | + SUN8I_A83T_DPHY_ANA0_SNK(2)); + + return 0; +}; + +static int sun8i_a83t_dphy_power_off(struct phy *dphy) +{ + struct sun8i_a83t_mipi_csi2_dev *cdev = phy_get_drvdata(dphy); + struct regmap *regmap = cdev->regmap; + + regmap_write(regmap, SUN8I_A83T_DPHY_CTRL_REG, 0); + + return 0; +}; + +static const struct phy_ops sun8i_a83t_dphy_ops = { + .set_mode = sun8i_a83t_dphy_set_mode, + .configure = sun8i_a83t_dphy_configure, + .power_on = sun8i_a83t_dphy_power_on, + .power_off = sun8i_a83t_dphy_power_off, +}; + +int sun8i_a83t_dphy_register(struct sun8i_a83t_mipi_csi2_dev *cdev) +{ + struct phy_provider *phy_provider; + + cdev->dphy = devm_phy_create(cdev->dev, NULL, &sun8i_a83t_dphy_ops); + if (IS_ERR(cdev->dphy)) { + dev_err(cdev->dev, "failed to create D-PHY\n"); + return PTR_ERR(cdev->dphy); + } + + phy_set_drvdata(cdev->dphy, cdev); + + phy_provider = devm_of_phy_provider_register(cdev->dev, + of_phy_simple_xlate); + if (IS_ERR(phy_provider)) { + dev_err(cdev->dev, "failed to register D-PHY provider\n"); + return PTR_ERR(phy_provider); + } + + return 0; +} diff --git a/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_dphy.h b/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_dphy.h new file mode 100644 index 000000000000..a4ed355e5f6f --- /dev/null +++ b/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_dphy.h @@ -0,0 +1,39 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright 2020 Kévin L'hôpital + * Copyright 2020 Bootlin + * Author: Paul Kocialkowski + */ + +#ifndef __SUN8I_A83T_DPHY_H__ +#define __SUN8I_A83T_DPHY_H__ + +#include "sun8i_a83t_mipi_csi2.h" + +#define SUN8I_A83T_DPHY_CTRL_REG 0x10 +#define SUN8I_A83T_DPHY_CTRL_INIT_VALUE 0xb8df698e +#define SUN8I_A83T_DPHY_CTRL_RESET_N BIT(31) +#define SUN8I_A83T_DPHY_CTRL_SHUTDOWN_N BIT(15) +#define SUN8I_A83T_DPHY_CTRL_DEBUG BIT(8) +#define SUN8I_A83T_DPHY_STATUS_REG 0x14 +#define SUN8I_A83T_DPHY_STATUS_CLK_STOP BIT(10) +#define SUN8I_A83T_DPHY_STATUS_CLK_ULPS BIT(9) +#define SUN8I_A83T_DPHY_STATUS_HSCLK BIT(8) +#define SUN8I_A83T_DPHY_STATUS_D3_STOP BIT(7) +#define SUN8I_A83T_DPHY_STATUS_D2_STOP BIT(6) +#define SUN8I_A83T_DPHY_STATUS_D1_STOP BIT(5) +#define SUN8I_A83T_DPHY_STATUS_D0_STOP BIT(4) +#define SUN8I_A83T_DPHY_STATUS_D3_ULPS BIT(3) +#define SUN8I_A83T_DPHY_STATUS_D2_ULPS BIT(2) +#define SUN8I_A83T_DPHY_STATUS_D1_ULPS BIT(1) +#define SUN8I_A83T_DPHY_STATUS_D0_ULPS BIT(0) + +#define SUN8I_A83T_DPHY_ANA0_REG 0x30 +#define SUN8I_A83T_DPHY_ANA0_REXT_EN BIT(31) +#define SUN8I_A83T_DPHY_ANA0_REXT BIT(30) +#define SUN8I_A83T_DPHY_ANA0_RINT(v) (((v) << 28) & GENMASK(29, 28)) +#define SUN8I_A83T_DPHY_ANA0_SNK(v) (((v) << 20) & GENMASK(22, 20)) + +int sun8i_a83t_dphy_register(struct sun8i_a83t_mipi_csi2_dev *cdev); + +#endif /* __SUN8I_A83T_DPHY_H__ */ diff --git a/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.c b/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.c new file mode 100644 index 000000000000..715e4e4eabb8 --- /dev/null +++ b/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.c @@ -0,0 +1,666 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2020 Kévin L'hôpital + * Copyright 2020 Bootlin + * Author: Paul Kocialkowski + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "sun8i_a83t_dphy.h" +#include "sun8i_a83t_mipi_csi2.h" + +#define MODULE_NAME "sun8i-a83t-mipi-csi2" + +static const u32 sun8i_a83t_mipi_csi2_mbus_codes[] = { + MEDIA_BUS_FMT_SBGGR8_1X8, + MEDIA_BUS_FMT_SGBRG8_1X8, + MEDIA_BUS_FMT_SGRBG8_1X8, + MEDIA_BUS_FMT_SRGGB8_1X8, + MEDIA_BUS_FMT_SBGGR10_1X10, + MEDIA_BUS_FMT_SGBRG10_1X10, + MEDIA_BUS_FMT_SGRBG10_1X10, + MEDIA_BUS_FMT_SRGGB10_1X10, +}; + +/* Core */ + +static void sun8i_a83t_mipi_csi2_init(struct sun8i_a83t_mipi_csi2_dev *cdev) +{ + struct regmap *regmap = cdev->regmap; + + /* + * The Allwinner BSP sets various magic values on a bunch of registers. + * This is apparently a necessary initialization process that will cause + * the capture to fail with unsolicited interrupts hitting if skipped. + * + * Most of the registers are set to proper values later, except for the + * two reserved registers. They are said to hold a "hardware lock" + * value, without more information available. + */ + + regmap_write(regmap, SUN8I_A83T_MIPI_CSI2_CTRL_REG, 0); + regmap_write(regmap, SUN8I_A83T_MIPI_CSI2_CTRL_REG, + SUN8I_A83T_MIPI_CSI2_CTRL_INIT_VALUE); + + regmap_write(regmap, SUN8I_A83T_MIPI_CSI2_RX_PKT_NUM_REG, 0); + regmap_write(regmap, SUN8I_A83T_MIPI_CSI2_RX_PKT_NUM_REG, + SUN8I_A83T_MIPI_CSI2_RX_PKT_NUM_INIT_VALUE); + + regmap_write(regmap, SUN8I_A83T_DPHY_CTRL_REG, 0); + regmap_write(regmap, SUN8I_A83T_DPHY_CTRL_REG, + SUN8I_A83T_DPHY_CTRL_INIT_VALUE); + + regmap_write(regmap, SUN8I_A83T_MIPI_CSI2_RSVD1_REG, 0); + regmap_write(regmap, SUN8I_A83T_MIPI_CSI2_RSVD1_REG, + SUN8I_A83T_MIPI_CSI2_RSVD1_HW_LOCK_VALUE); + + regmap_write(regmap, SUN8I_A83T_MIPI_CSI2_RSVD2_REG, 0); + regmap_write(regmap, SUN8I_A83T_MIPI_CSI2_RSVD2_REG, + SUN8I_A83T_MIPI_CSI2_RSVD2_HW_LOCK_VALUE); + + regmap_write(regmap, SUN8I_A83T_MIPI_CSI2_CFG_REG, 0); + regmap_write(regmap, SUN8I_A83T_MIPI_CSI2_CFG_REG, + SUN8I_A83T_MIPI_CSI2_CFG_INIT_VALUE); +} + +/* Video */ + +static int sun8i_a83t_mipi_csi2_s_stream(struct v4l2_subdev *subdev, int on) +{ + struct sun8i_a83t_mipi_csi2_video *video = + sun8i_a83t_mipi_csi2_subdev_video(subdev); + struct sun8i_a83t_mipi_csi2_dev *cdev = + sun8i_a83t_mipi_csi2_video_dev(video); + struct v4l2_subdev *remote_subdev = video->remote_subdev; + struct v4l2_fwnode_bus_mipi_csi2 *bus_mipi_csi2 = + &video->endpoint.bus.mipi_csi2; + union phy_configure_opts dphy_opts = { 0 }; + struct phy_configure_opts_mipi_dphy *dphy_cfg = &dphy_opts.mipi_dphy; + struct regmap *regmap = cdev->regmap; + struct v4l2_ctrl *ctrl; + unsigned int lanes_count; + unsigned int bpp; + unsigned long pixel_rate; + u8 data_type = 0; + u32 version = 0; + /* Initialize to 0 to use both in disable label (ret != 0) and off. */ + int ret = 0; + + if (!remote_subdev) + return -ENODEV; + + if (!on) { + v4l2_subdev_call(remote_subdev, video, s_stream, 0); + goto disable; + } + + switch (video->mbus_format.code) { + case MEDIA_BUS_FMT_SBGGR8_1X8: + case MEDIA_BUS_FMT_SGBRG8_1X8: + case MEDIA_BUS_FMT_SGRBG8_1X8: + case MEDIA_BUS_FMT_SRGGB8_1X8: + data_type = MIPI_CSI2_DATA_TYPE_RAW8; + bpp = 8; + break; + case MEDIA_BUS_FMT_SBGGR10_1X10: + case MEDIA_BUS_FMT_SGBRG10_1X10: + case MEDIA_BUS_FMT_SGRBG10_1X10: + case MEDIA_BUS_FMT_SRGGB10_1X10: + data_type = MIPI_CSI2_DATA_TYPE_RAW10; + bpp = 10; + break; + default: + return -EINVAL; + } + + /* Sensor pixel rate */ + + ctrl = v4l2_ctrl_find(remote_subdev->ctrl_handler, V4L2_CID_PIXEL_RATE); + if (!ctrl) { + dev_err(cdev->dev, + "%s: no MIPI CSI-2 pixel rate from the sensor\n", + __func__); + return -ENODEV; + } + + pixel_rate = (unsigned long)v4l2_ctrl_g_ctrl_int64(ctrl); + if (!pixel_rate) { + dev_err(cdev->dev, + "%s: zero MIPI CSI-2 pixel rate from the sensor\n", + __func__); + return -ENODEV; + } + + /* Power management */ + + ret = pm_runtime_get_sync(cdev->dev); + if (ret < 0) { + pm_runtime_put_noidle(cdev->dev); + return ret; + } + + /* D-PHY configuration */ + + lanes_count = bus_mipi_csi2->num_data_lanes; + phy_mipi_dphy_get_default_config(pixel_rate, bpp, lanes_count, + dphy_cfg); + + /* + * Note that our hardware is using DDR, which is not taken in account by + * phy_mipi_dphy_get_default_config when calculating hs_clk_rate from + * the pixel rate, lanes count and bpp. + * + * The resulting clock rate is basically the symbol rate over the whole + * link. The actual clock rate is calculated with division by two since + * DDR samples both on rising and falling edges. + */ + + dev_dbg(cdev->dev, "A83T MIPI CSI-2 config:\n"); + dev_dbg(cdev->dev, + "%ld pixels/s, %u bits/pixel, %u lanes, %lu Hz clock\n", + pixel_rate, bpp, lanes_count, dphy_cfg->hs_clk_rate / 2); + + ret = phy_reset(cdev->dphy); + if (ret) { + dev_err(cdev->dev, "failed to reset MIPI D-PHY\n"); + goto error_pm; + } + + ret = phy_set_mode_ext(cdev->dphy, PHY_MODE_MIPI_DPHY, + PHY_MIPI_DPHY_SUBMODE_RX); + if (ret) { + dev_err(cdev->dev, "failed to set MIPI D-PHY mode\n"); + goto error_pm; + } + + ret = phy_configure(cdev->dphy, &dphy_opts); + if (ret) { + dev_err(cdev->dev, "failed to configure MIPI D-PHY\n"); + goto error_pm; + } + + ret = phy_power_on(cdev->dphy); + if (ret) { + dev_err(cdev->dev, "failed to power on MIPI D-PHY\n"); + goto error_pm; + } + + /* MIPI CSI-2 controller setup */ + + regmap_write(regmap, SUN8I_A83T_MIPI_CSI2_CTRL_REG, + SUN8I_A83T_MIPI_CSI2_CTRL_RESET_N); + + regmap_read(regmap, SUN8I_A83T_MIPI_CSI2_VERSION_REG, &version); + + dev_dbg(cdev->dev, "A83T MIPI CSI-2 version: %04x\n", version); + + regmap_write(regmap, SUN8I_A83T_MIPI_CSI2_CFG_REG, + SUN8I_A83T_MIPI_CSI2_CFG_UNPKT_EN | + SUN8I_A83T_MIPI_CSI2_CFG_SYNC_DLY_CYCLE(8) | + SUN8I_A83T_MIPI_CSI2_CFG_N_CHANNEL(1) | + SUN8I_A83T_MIPI_CSI2_CFG_N_LANE(lanes_count)); + + /* + * Our MIPI CSI-2 controller has internal channels that can be + * configured to match a specific MIPI CSI-2 virtual channel and/or + * a specific data type. Each internal channel can be piped to an + * internal channel of the CSI controller. + * + * We set virtual channel numbers to all channels to make sure that + * virtual channel 0 goes to CSI channel 0 only. + */ + regmap_write(regmap, SUN8I_A83T_MIPI_CSI2_VCDT0_REG, + SUN8I_A83T_MIPI_CSI2_VCDT0_CH_VC(3, 3) | + SUN8I_A83T_MIPI_CSI2_VCDT0_CH_VC(2, 2) | + SUN8I_A83T_MIPI_CSI2_VCDT0_CH_VC(1, 1) | + SUN8I_A83T_MIPI_CSI2_VCDT0_CH_VC(0, 0) | + SUN8I_A83T_MIPI_CSI2_VCDT0_CH_DT(0, data_type)); + + /* Start streaming. */ + regmap_update_bits(regmap, SUN8I_A83T_MIPI_CSI2_CFG_REG, + SUN8I_A83T_MIPI_CSI2_CFG_SYNC_EN, + SUN8I_A83T_MIPI_CSI2_CFG_SYNC_EN); + + ret = v4l2_subdev_call(remote_subdev, video, s_stream, 1); + if (ret) + goto disable; + + return 0; + +disable: + regmap_update_bits(regmap, SUN8I_A83T_MIPI_CSI2_CFG_REG, + SUN8I_A83T_MIPI_CSI2_CFG_SYNC_EN, 0); + + regmap_write(regmap, SUN8I_A83T_MIPI_CSI2_CTRL_REG, 0); + + phy_power_off(cdev->dphy); + +error_pm: + pm_runtime_put(cdev->dev); + + return ret; +} + +static const +struct v4l2_subdev_video_ops sun8i_a83t_mipi_csi2_subdev_video_ops = { + .s_stream = sun8i_a83t_mipi_csi2_s_stream, +}; + +/* Pad */ + +static int +sun8i_a83t_mipi_csi2_enum_mbus_code(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *config, + struct v4l2_subdev_mbus_code_enum *code_enum) +{ + if (code_enum->index >= ARRAY_SIZE(sun8i_a83t_mipi_csi2_mbus_codes)) + return -EINVAL; + + code_enum->code = sun8i_a83t_mipi_csi2_mbus_codes[code_enum->index]; + + return 0; +} + +static int sun8i_a83t_mipi_csi2_get_fmt(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *config, + struct v4l2_subdev_format *format) +{ + struct sun8i_a83t_mipi_csi2_video *video = + sun8i_a83t_mipi_csi2_subdev_video(subdev); + struct v4l2_mbus_framefmt *mbus_format = &format->format; + + if (format->which == V4L2_SUBDEV_FORMAT_TRY) + *mbus_format = *v4l2_subdev_get_try_format(subdev, config, + format->pad); + else + *mbus_format = video->mbus_format; + + return 0; +} + +static int sun8i_a83t_mipi_csi2_set_fmt(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *config, + struct v4l2_subdev_format *format) +{ + struct sun8i_a83t_mipi_csi2_video *video = + sun8i_a83t_mipi_csi2_subdev_video(subdev); + struct v4l2_mbus_framefmt *mbus_format = &format->format; + + if (format->which == V4L2_SUBDEV_FORMAT_TRY) + *v4l2_subdev_get_try_format(subdev, config, format->pad) = + *mbus_format; + else + video->mbus_format = *mbus_format; + + return 0; +} + +static const struct v4l2_subdev_pad_ops sun8i_a83t_mipi_csi2_subdev_pad_ops = { + .enum_mbus_code = sun8i_a83t_mipi_csi2_enum_mbus_code, + .get_fmt = sun8i_a83t_mipi_csi2_get_fmt, + .set_fmt = sun8i_a83t_mipi_csi2_set_fmt, +}; + +/* Subdev */ + +static const struct v4l2_subdev_ops sun8i_a83t_mipi_csi2_subdev_ops = { + .video = &sun8i_a83t_mipi_csi2_subdev_video_ops, + .pad = &sun8i_a83t_mipi_csi2_subdev_pad_ops, +}; + +/* Notifier */ + +static int +sun8i_a83t_mipi_csi2_notifier_bound(struct v4l2_async_notifier *notifier, + struct v4l2_subdev *remote_subdev, + struct v4l2_async_subdev *remote_subdev_async) +{ + struct v4l2_subdev *subdev = notifier->sd; + struct sun8i_a83t_mipi_csi2_video *video = + sun8i_a83t_mipi_csi2_subdev_video(subdev); + struct sun8i_a83t_mipi_csi2_dev *cdev = + sun8i_a83t_mipi_csi2_video_dev(video); + int source_pad; + int ret; + + source_pad = media_entity_get_fwnode_pad(&remote_subdev->entity, + remote_subdev->fwnode, + MEDIA_PAD_FL_SOURCE); + if (source_pad < 0) + return source_pad; + + ret = media_create_pad_link(&remote_subdev->entity, source_pad, + &subdev->entity, 0, + MEDIA_LNK_FL_ENABLED | + MEDIA_LNK_FL_IMMUTABLE); + if (ret) { + dev_err(cdev->dev, "failed to create %s:%u -> %s:%u link\n", + remote_subdev->entity.name, source_pad, + subdev->entity.name, 0); + return ret; + } + + video->remote_subdev = remote_subdev; + + return 0; +} + +static const +struct v4l2_async_notifier_operations sun8i_a83t_mipi_csi2_notifier_ops = { + .bound = sun8i_a83t_mipi_csi2_notifier_bound, +}; + +/* Media Entity */ + +static const struct media_entity_operations sun8i_a83t_mipi_csi2_entity_ops = { + .link_validate = v4l2_subdev_link_validate, +}; + +/* Base Driver */ + +static int sun8i_a83t_mipi_csi2_suspend(struct device *dev) +{ + struct sun8i_a83t_mipi_csi2_dev *cdev = dev_get_drvdata(dev); + + clk_disable_unprepare(cdev->clk_misc); + clk_disable_unprepare(cdev->clk_mipi); + clk_disable_unprepare(cdev->clk_mod); + clk_disable_unprepare(cdev->clk_bus); + reset_control_assert(cdev->reset); + + return 0; +} + +static int sun8i_a83t_mipi_csi2_resume(struct device *dev) +{ + struct sun8i_a83t_mipi_csi2_dev *cdev = dev_get_drvdata(dev); + int ret; + + ret = reset_control_deassert(cdev->reset); + if (ret) { + dev_err(cdev->dev, "failed to deassert reset\n"); + return ret; + } + + ret = clk_prepare_enable(cdev->clk_bus); + if (ret) { + dev_err(cdev->dev, "failed to enable bus clock\n"); + goto error_reset; + } + + ret = clk_prepare_enable(cdev->clk_mod); + if (ret) { + dev_err(cdev->dev, "failed to enable module clock\n"); + goto error_clk_bus; + } + + ret = clk_prepare_enable(cdev->clk_mipi); + if (ret) { + dev_err(cdev->dev, "failed to enable MIPI clock\n"); + goto error_clk_mod; + } + + ret = clk_prepare_enable(cdev->clk_misc); + if (ret) { + dev_err(cdev->dev, "failed to enable CSI misc clock\n"); + goto error_clk_mipi; + } + + sun8i_a83t_mipi_csi2_init(cdev); + + return 0; + +error_clk_mipi: + clk_disable_unprepare(cdev->clk_mipi); + +error_clk_mod: + clk_disable_unprepare(cdev->clk_mod); + +error_clk_bus: + clk_disable_unprepare(cdev->clk_bus); + +error_reset: + reset_control_assert(cdev->reset); + + return ret; +} + +static int +sun8i_a83t_mipi_csi2_v4l2_setup(struct sun8i_a83t_mipi_csi2_dev *cdev) +{ + struct sun8i_a83t_mipi_csi2_video *video = &cdev->video; + struct v4l2_subdev *subdev = &video->subdev; + struct v4l2_async_notifier *notifier = &video->notifier; + struct fwnode_handle *handle = NULL; + struct v4l2_fwnode_endpoint *endpoint; + struct v4l2_async_subdev *subdev_async; + int ret; + + /* Subdev */ + + v4l2_subdev_init(subdev, &sun8i_a83t_mipi_csi2_subdev_ops); + subdev->dev = cdev->dev; + subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + strscpy(subdev->name, MODULE_NAME, sizeof(subdev->name)); + v4l2_set_subdevdata(subdev, cdev); + + /* Entity */ + + subdev->entity.function = MEDIA_ENT_F_VID_IF_BRIDGE; + subdev->entity.ops = &sun8i_a83t_mipi_csi2_entity_ops; + + /* Pads */ + + video->pads[0].flags = MEDIA_PAD_FL_SINK; + video->pads[1].flags = MEDIA_PAD_FL_SOURCE; + + ret = media_entity_pads_init(&subdev->entity, 2, video->pads); + if (ret) + return ret; + + /* Endpoint */ + + handle = fwnode_graph_get_endpoint_by_id(dev_fwnode(cdev->dev), 0, 0, + FWNODE_GRAPH_ENDPOINT_NEXT); + if (!handle) { + ret = -ENODEV; + goto error_media_entity; + } + + endpoint = &video->endpoint; + endpoint->bus_type = V4L2_MBUS_CSI2_DPHY; + + ret = v4l2_fwnode_endpoint_parse(handle, endpoint); + if (ret) + goto error_media_entity; + + /* Notifier */ + + v4l2_async_notifier_init(notifier); + + subdev_async = &video->subdev_async; + ret = v4l2_async_notifier_add_fwnode_remote_subdev(notifier, handle, + subdev_async); + if (ret) + goto error_media_entity; + + fwnode_handle_put(handle); + handle = NULL; + + video->notifier.ops = &sun8i_a83t_mipi_csi2_notifier_ops; + + ret = v4l2_async_subdev_notifier_register(subdev, notifier); + if (ret < 0) + goto error_notifier; + + /* Runtime PM */ + + pm_runtime_enable(cdev->dev); + pm_runtime_set_suspended(cdev->dev); + + /* Subdev */ + + ret = v4l2_async_register_subdev(subdev); + if (ret < 0) + goto error_pm; + + return 0; + +error_pm: + pm_runtime_disable(cdev->dev); + v4l2_async_notifier_unregister(notifier); + +error_notifier: + v4l2_async_notifier_cleanup(notifier); + +error_media_entity: + if (handle) + fwnode_handle_put(handle); + + media_entity_cleanup(&subdev->entity); + + return ret; +} + +static int +sun8i_a83t_mipi_csi2_v4l2_teardown(struct sun8i_a83t_mipi_csi2_dev *cdev) +{ + struct sun8i_a83t_mipi_csi2_video *video = &cdev->video; + struct v4l2_subdev *subdev = &video->subdev; + struct v4l2_async_notifier *notifier = &video->notifier; + + v4l2_async_unregister_subdev(subdev); + pm_runtime_disable(cdev->dev); + v4l2_async_notifier_unregister(notifier); + v4l2_async_notifier_cleanup(notifier); + media_entity_cleanup(&subdev->entity); + v4l2_device_unregister_subdev(subdev); + + return 0; +} + +static const struct regmap_config sun8i_a83t_mipi_csi2_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .max_register = 0x120, +}; + +static int sun8i_a83t_mipi_csi2_probe(struct platform_device *pdev) +{ + struct sun8i_a83t_mipi_csi2_dev *cdev; + struct resource *res; + void __iomem *io_base; + int ret; + + cdev = devm_kzalloc(&pdev->dev, sizeof(*cdev), GFP_KERNEL); + if (!cdev) + return -ENOMEM; + + cdev->dev = &pdev->dev; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + io_base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(io_base)) + return PTR_ERR(io_base); + + cdev->regmap = + devm_regmap_init_mmio(&pdev->dev, io_base, + &sun8i_a83t_mipi_csi2_regmap_config); + if (IS_ERR(cdev->regmap)) { + dev_err(&pdev->dev, "failed to init register map\n"); + return PTR_ERR(cdev->regmap); + } + + cdev->clk_bus = devm_clk_get(&pdev->dev, "bus"); + if (IS_ERR(cdev->clk_bus)) { + dev_err(&pdev->dev, "failed to acquire bus clock\n"); + return PTR_ERR(cdev->clk_bus); + } + + cdev->clk_mod = devm_clk_get(&pdev->dev, "mod"); + if (IS_ERR(cdev->clk_mod)) { + dev_err(&pdev->dev, "failed to acquire mod clock\n"); + return PTR_ERR(cdev->clk_mod); + } + + cdev->clk_mipi = devm_clk_get(&pdev->dev, "mipi"); + if (IS_ERR(cdev->clk_mipi)) { + dev_err(&pdev->dev, "failed to acquire mipi clock\n"); + return PTR_ERR(cdev->clk_mipi); + } + + cdev->clk_misc = devm_clk_get(&pdev->dev, "misc"); + if (IS_ERR(cdev->clk_misc)) { + dev_err(&pdev->dev, "failed to acquire misc clock\n"); + return PTR_ERR(cdev->clk_misc); + } + + cdev->reset = devm_reset_control_get_shared(&pdev->dev, NULL); + if (IS_ERR(cdev->reset)) { + dev_err(&pdev->dev, "failed to get reset controller\n"); + return PTR_ERR(cdev->reset); + } + + ret = sun8i_a83t_dphy_register(cdev); + if (ret) { + dev_err(&pdev->dev, "failed to init MIPI D-PHY\n"); + return ret; + } + + platform_set_drvdata(pdev, cdev); + + ret = sun8i_a83t_mipi_csi2_v4l2_setup(cdev); + if (ret) + return ret; + + return 0; +} + +static int sun8i_a83t_mipi_csi2_remove(struct platform_device *pdev) +{ + struct sun8i_a83t_mipi_csi2_dev *cdev = platform_get_drvdata(pdev); + + phy_exit(cdev->dphy); + + return sun8i_a83t_mipi_csi2_v4l2_teardown(cdev); +} + +static const struct dev_pm_ops sun8i_a83t_mipi_csi2_pm_ops = { + SET_RUNTIME_PM_OPS(sun8i_a83t_mipi_csi2_suspend, + sun8i_a83t_mipi_csi2_resume, NULL) +}; + +static const struct of_device_id sun8i_a83t_mipi_csi2_of_match[] = { + { .compatible = "allwinner,sun8i-a83t-mipi-csi2" }, + {}, +}; +MODULE_DEVICE_TABLE(of, sun8i_a83t_mipi_csi2_of_match); + +static struct platform_driver sun8i_a83t_mipi_csi2_platform_driver = { + .probe = sun8i_a83t_mipi_csi2_probe, + .remove = sun8i_a83t_mipi_csi2_remove, + .driver = { + .name = MODULE_NAME, + .of_match_table = of_match_ptr(sun8i_a83t_mipi_csi2_of_match), + .pm = &sun8i_a83t_mipi_csi2_pm_ops, + }, +}; +module_platform_driver(sun8i_a83t_mipi_csi2_platform_driver); + +MODULE_DESCRIPTION("Allwinner A83T MIPI CSI-2 and D-PHY Controller Driver"); +MODULE_AUTHOR("Paul Kocialkowski "); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.h b/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.h new file mode 100644 index 000000000000..3fb376bafb82 --- /dev/null +++ b/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.h @@ -0,0 +1,197 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright 2020 Kévin L'hôpital + * Copyright 2020 Bootlin + * Author: Paul Kocialkowski + */ + +#ifndef __SUN8I_A83T_MIPI_CSI2_H__ +#define __SUN8I_A83T_MIPI_CSI2_H__ + +#include +#include +#include +#include +#include + +#define SUN8I_A83T_MIPI_CSI2_VERSION_REG 0x0 +#define SUN8I_A83T_MIPI_CSI2_CTRL_REG 0x4 +#define SUN8I_A83T_MIPI_CSI2_CTRL_INIT_VALUE 0xb8c39bec +#define SUN8I_A83T_MIPI_CSI2_CTRL_RESET_N BIT(31) +#define SUN8I_A83T_MIPI_CSI2_RX_PKT_NUM_REG 0x8 +#define SUN8I_A83T_MIPI_CSI2_RX_PKT_NUM_INIT_VALUE 0xb8d257f8 +#define SUN8I_A83T_MIPI_CSI2_RSVD0_REG 0xc + +#define SUN8I_A83T_MIPI_CSI2_RSVD1_REG 0x18 +#define SUN8I_A83T_MIPI_CSI2_RSVD1_HW_LOCK_VALUE 0xb8c8a30c +#define SUN8I_A83T_MIPI_CSI2_RSVD2_REG 0x1c +#define SUN8I_A83T_MIPI_CSI2_RSVD2_HW_LOCK_VALUE 0xb8df8ad7 +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_REG 0x20 +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_ECC_ERR_DBL BIT(28) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_LINE_CKSM_ERR_VC3 BIT(27) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_LINE_CKSM_ERR_VC2 BIT(26) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_LINE_CKSM_ERR_VC1 BIT(25) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_LINE_CKSM_ERR_VC0 BIT(24) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_LINE_SEQ_ERR_DT3 BIT(23) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_LINE_SEQ_ERR_DT2 BIT(22) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_LINE_SEQ_ERR_DT1 BIT(21) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_LINE_SEQ_ERR_DT0 BIT(20) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_LS_LE_ERR_DT3 BIT(19) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_LS_LE_ERR_DT2 BIT(18) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_LS_LE_ERR_DT1 BIT(17) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_LS_LE_ERR_DT0 BIT(16) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_CRC_ERR_VC3 BIT(15) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_CRC_ERR_VC2 BIT(14) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_CRC_ERR_VC1 BIT(13) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_CRC_ERR_VC0 BIT(12) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_FRM_SEQ_ERR_VC3 BIT(11) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_FRM_SEQ_ERR_VC2 BIT(10) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_FRM_SEQ_ERR_VC1 BIT(9) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_FRM_SEQ_ERR_VC0 BIT(8) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_FS_FE_ERR_VC3 BIT(7) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_FS_FE_ERR_VC2 BIT(6) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_FS_FE_ERR_VC1 BIT(5) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_FS_FE_ERR_VC0 BIT(4) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_SOT_SYNC_ERR_3 BIT(3) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_SOT_SYNC_ERR_2 BIT(2) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_SOT_SYNC_ERR_1 BIT(1) +#define SUN8I_A83T_MIPI_CSI2_INT_STA0_SOT_SYNC_ERR_0 BIT(0) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_REG 0x24 +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_LINE_SEQ_ERR_DT7 BIT(23) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_LINE_SEQ_ERR_DT6 BIT(22) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_LINE_SEQ_ERR_DT5 BIT(21) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_LINE_SEQ_ERR_DT4 BIT(20) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_LS_LE_ERR_DT7 BIT(19) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_LS_LE_ERR_DT6 BIT(18) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_LS_LE_ERR_DT5 BIT(17) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_LS_LE_ERR_DT4 BIT(16) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_DT_ERR_VC3 BIT(15) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_DT_ERR_VC2 BIT(14) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_DT_ERR_VC1 BIT(13) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_DT_ERR_VC0 BIT(12) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_ECC_ERR1_VC3 BIT(11) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_ECC_ERR1_VC2 BIT(10) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_ECC_ERR1_VC1 BIT(9) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_ECC_ERR1_VC0 BIT(8) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_SOT_ERR_3 BIT(7) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_SOT_ERR_2 BIT(6) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_SOT_ERR_1 BIT(5) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_SOT_ERR_0 BIT(4) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_ESC_ENTRY_ERR_3 BIT(3) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_ESC_ENTRY_ERR_2 BIT(2) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_ESC_ENTRY_ERR_1 BIT(1) +#define SUN8I_A83T_MIPI_CSI2_INT_STA1_ESC_ENTRY_ERR_0 BIT(0) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_REG 0x28 +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_ECC_ERR_DBL BIT(28) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_CKSM_ERR_VC3 BIT(27) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_CKSM_ERR_VC2 BIT(26) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_CKSM_ERR_VC1 BIT(25) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_CKSM_ERR_VC0 BIT(24) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_LINE_SEQ_ERR_DT3 BIT(23) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_LINE_SEQ_ERR_DT2 BIT(22) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_LINE_SEQ_ERR_DT1 BIT(21) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_LINE_SEQ_ERR_DT0 BIT(20) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_LS_LE_ERR_DT3 BIT(19) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_LS_LE_ERR_DT2 BIT(18) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_LS_LE_ERR_DT1 BIT(17) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_LS_LE_ERR_DT0 BIT(16) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_CRC_ERR_VC3 BIT(15) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_CRC_ERR_VC2 BIT(14) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_CRC_ERR_VC1 BIT(13) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_CRC_ERR_VC0 BIT(12) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_FRM_SEQ_ERR_VC3 BIT(11) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_FRM_SEQ_ERR_VC2 BIT(10) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_FRM_SEQ_ERR_VC1 BIT(9) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_FRM_SEQ_ERR_VC0 BIT(8) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_FS_FE_ERR_VC3 BIT(7) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_FS_FE_ERR_VC2 BIT(6) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_FS_FE_ERR_VC1 BIT(5) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_FS_FE_ERR_VC0 BIT(4) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_SOT_SYNC_ERR_3 BIT(3) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_SOT_SYNC_ERR_2 BIT(2) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_SOT_SYNC_ERR_1 BIT(1) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK0_SOT_SYNC_ERR_0 BIT(0) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK1_REG 0x2c +#define SUN8I_A83T_MIPI_CSI2_INT_MSK1_DT_ERR_VC3 BIT(15) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK1_DT_ERR_VC2 BIT(14) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK1_DT_ERR_VC1 BIT(13) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK1_DT_ERR_VC0 BIT(12) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK1_ECC_ERR1_VC3 BIT(11) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK1_ECC_ERR1_VC2 BIT(10) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK1_ECC_ERR1_VC1 BIT(9) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK1_ECC_ERR1_VC0 BIT(8) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK1_SOT_ERR_3 BIT(7) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK1_SOT_ERR_2 BIT(6) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK1_SOT_ERR_1 BIT(5) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK1_SOT_ERR_0 BIT(4) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK1_ESC_ENTRY_ERR_3 BIT(3) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK1_ESC_ENTRY_ERR_2 BIT(2) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK1_ESC_ENTRY_ERR_1 BIT(1) +#define SUN8I_A83T_MIPI_CSI2_INT_MSK1_ESC_ENTRY_ERR_0 BIT(0) + +#define SUN8I_A83T_MIPI_CSI2_CFG_REG 0x100 +#define SUN8I_A83T_MIPI_CSI2_CFG_INIT_VALUE 0xb8c64f24 +#define SUN8I_A83T_MIPI_CSI2_CFG_SYNC_EN BIT(31) +#define SUN8I_A83T_MIPI_CSI2_CFG_BYPASS_ECC_EN BIT(29) +#define SUN8I_A83T_MIPI_CSI2_CFG_UNPKT_EN BIT(28) +#define SUN8I_A83T_MIPI_CSI2_CFG_NONE_UNPKT_RX_MODE BIT(27) +#define SUN8I_A83T_MIPI_CSI2_CFG_YC_SWAB BIT(26) +#define SUN8I_A83T_MIPI_CSI2_CFG_N_BYTE BIT(24) +#define SUN8I_A83T_MIPI_CSI2_CFG_SYNC_DLY_CYCLE(v) (((v) << 18) & \ + GENMASK(22, 18)) +#define SUN8I_A83T_MIPI_CSI2_CFG_N_CHANNEL(v) ((((v) - 1) << 16) & \ + GENMASK(17, 16)) +#define SUN8I_A83T_MIPI_CSI2_CFG_N_LANE(v) ((((v) - 1) << 4) & \ + GENMASK(5, 4)) +#define SUN8I_A83T_MIPI_CSI2_VCDT0_REG 0x104 +#define SUN8I_A83T_MIPI_CSI2_VCDT0_CH_VC(ch, vc) (((vc) & GENMASK(1, 0)) << \ + ((ch) * 8 + 6)) +#define SUN8I_A83T_MIPI_CSI2_VCDT0_CH_DT(ch, t) (((t) & GENMASK(5, 0)) << \ + ((ch) * 8)) +#define SUN8I_A83T_MIPI_CSI2_VCDT1_REG 0x108 +#define SUN8I_A83T_MIPI_CSI2_VCDT1_CH_VC(ch, vc) (((vc) & GENMASK(1, 0)) << \ + (((ch) - 4) * 8 + 6)) +#define SUN8I_A83T_MIPI_CSI2_VCDT1_CH_DT(ch, t) (((t) & GENMASK(5, 0)) << \ + (((ch) - 4) * 8)) + +enum mipi_csi2_data_type { + MIPI_CSI2_DATA_TYPE_RAW8 = 0x2a, + MIPI_CSI2_DATA_TYPE_RAW10 = 0x2b, + MIPI_CSI2_DATA_TYPE_RAW12 = 0x2c, +}; + +struct sun8i_a83t_mipi_csi2_video { + struct v4l2_fwnode_endpoint endpoint; + struct v4l2_subdev subdev; + struct media_pad pads[2]; + + struct v4l2_async_subdev subdev_async; + struct v4l2_async_notifier notifier; + + struct v4l2_subdev *remote_subdev; + + struct v4l2_mbus_framefmt mbus_format; +}; + +struct sun8i_a83t_mipi_csi2_dev { + struct device *dev; + + struct regmap *regmap; + struct clk *clk_bus; + struct clk *clk_mod; + struct clk *clk_mipi; + struct clk *clk_misc; + struct reset_control *reset; + struct phy *dphy; + struct phy_configure_opts_mipi_dphy dphy_config; + + struct sun8i_a83t_mipi_csi2_video video; +}; + +#define sun8i_a83t_mipi_csi2_subdev_video(s) \ + container_of(s, struct sun8i_a83t_mipi_csi2_video, subdev) + +#define sun8i_a83t_mipi_csi2_video_dev(v) \ + container_of(v, struct sun8i_a83t_mipi_csi2_dev, video) + +#endif /* __SUN8I_A83T_MIPI_CSI2_H__ */ From patchwork Fri Jan 15 20:01:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 12023987 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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,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 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localhost.localdomain (196.109.29.93.rev.sfr.net [93.29.109.196]) (Authenticated sender: paul.kocialkowski@bootlin.com) by relay5-d.mail.gandi.net (Postfix) with ESMTPSA id ACE741C001A; Fri, 15 Jan 2021 20:02:25 +0000 (UTC) From: Paul Kocialkowski To: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, devel@driverdev.osuosl.org, linux-sunxi@googlegroups.com Subject: [PATCH v5 15/16] ARM: dts: sun8i: a83t: Add MIPI CSI-2 controller node Date: Fri, 15 Jan 2021 21:01:40 +0100 Message-Id: <20210115200141.1397785-16-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> References: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210115_150229_416507_0B4CDB61 X-CRM114-Status: GOOD ( 13.51 ) 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: Jernej Skrabec , Dafna Hirschfeld , Philipp Zabel , Jonathan Corbet , Thomas Petazzoni , Greg Kroah-Hartman , Helen Koike , Vinod Koul , Maxime Ripard , Kishon Vijay Abraham I , Paul Kocialkowski , Chen-Yu Tsai , Rob Herring , Hans Verkuil , Ezequiel Garcia , Yong Deng , Sakari Ailus , Mauro Carvalho Chehab , kevin.lhopital@hotmail.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org MIPI CSI-2 is supported on the A83T with a dedicated controller that covers both the protocol and D-PHY. It can be connected to the CSI interface as a V4L2 subdev through the fwnode graph. This is not done by default since connecting the bridge without a subdev attached to it will cause a failure on the CSI driver. Signed-off-by: Paul Kocialkowski --- arch/arm/boot/dts/sun8i-a83t.dtsi | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/arch/arm/boot/dts/sun8i-a83t.dtsi b/arch/arm/boot/dts/sun8i-a83t.dtsi index c010b27fdb6a..d6d55c12b995 100644 --- a/arch/arm/boot/dts/sun8i-a83t.dtsi +++ b/arch/arm/boot/dts/sun8i-a83t.dtsi @@ -1066,6 +1066,32 @@ csi_in: port { }; }; + mipi_csi2: csi@1cb1000 { + compatible = "allwinner,sun8i-a83t-mipi-csi2"; + reg = <0x01cb1000 0x1000>; + interrupts = ; + clocks = <&ccu CLK_BUS_CSI>, + <&ccu CLK_CSI_SCLK>, + <&ccu CLK_MIPI_CSI>, + <&ccu CLK_CSI_MISC>; + clock-names = "bus", "mod", "mipi", "misc"; + resets = <&ccu RST_BUS_CSI>; + status = "disabled"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + mipi_csi2_in: port@0 { + reg = <0>; + }; + + mipi_csi2_out: port@1 { + reg = <1>; + }; + }; + }; + hdmi: hdmi@1ee0000 { compatible = "allwinner,sun8i-a83t-dw-hdmi"; reg = <0x01ee0000 0x10000>; From patchwork Fri Jan 15 20:01:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 12024027 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=-19.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY,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 6E740C433DB for ; Fri, 15 Jan 2021 20:09:05 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 13C7A23603 for ; 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Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0VNE-00050a-K0; Fri, 15 Jan 2021 20:07:08 +0000 Received: from mslow2.mail.gandi.net ([217.70.178.242]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0VMw-0004tT-LG for linux-arm-kernel@lists.infradead.org; Fri, 15 Jan 2021 20:07:01 +0000 Received: from relay5-d.mail.gandi.net (unknown [217.70.183.197]) by mslow2.mail.gandi.net (Postfix) with ESMTP id AE2C33B1779 for ; Fri, 15 Jan 2021 20:03:10 +0000 (UTC) X-Originating-IP: 93.29.109.196 Received: from localhost.localdomain (196.109.29.93.rev.sfr.net [93.29.109.196]) (Authenticated sender: paul.kocialkowski@bootlin.com) by relay5-d.mail.gandi.net (Postfix) with ESMTPSA id 45DB41C0011; Fri, 15 Jan 2021 20:02:28 +0000 (UTC) From: Paul Kocialkowski To: linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, devel@driverdev.osuosl.org, linux-sunxi@googlegroups.com Subject: [PATCH v5 16/16] MAINTAINERS: Add entry for the Allwinner A83T MIPI CSI-2 bridge Date: Fri, 15 Jan 2021 21:01:41 +0100 Message-Id: <20210115200141.1397785-17-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> References: <20210115200141.1397785-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210115_150650_848291_772FB769 X-CRM114-Status: GOOD ( 11.11 ) 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: Jernej Skrabec , Dafna Hirschfeld , Philipp Zabel , Jonathan Corbet , Thomas Petazzoni , Greg Kroah-Hartman , Helen Koike , Vinod Koul , Maxime Ripard , Kishon Vijay Abraham I , Paul Kocialkowski , Chen-Yu Tsai , Rob Herring , Hans Verkuil , Ezequiel Garcia , Yong Deng , Sakari Ailus , Mauro Carvalho Chehab , kevin.lhopital@hotmail.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add myself as maintainer of the A83T MIPI CSI-2 bridge media driver. Signed-off-by: Paul Kocialkowski --- MAINTAINERS | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index a41c41f6387c..af8095085f0f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -718,6 +718,14 @@ T: git git://linuxtv.org/media_tree.git F: Documentation/devicetree/bindings/media/allwinner,sun6i-a31-mipi-csi2.yaml F: drivers/media/platform/sunxi/sun6i-mipi-csi2/ +ALLWINNER A83T MIPI CSI-2 BRIDGE +M: Paul Kocialkowski +L: linux-media@vger.kernel.org +S: Maintained +T: git git://linuxtv.org/media_tree.git +F: Documentation/devicetree/bindings/media/allwinner,sun8i-a83t-mipi-csi2.yaml +F: drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/ + ALLWINNER CPUFREQ DRIVER M: Yangtao Li L: linux-pm@vger.kernel.org