From mboxrd@z Thu Jan 1 00:00:00 1970 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=-24.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,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 93137C43333 for ; Wed, 23 Dec 2020 02:43:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6ECFE225AA for ; Wed, 23 Dec 2020 02:43:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730209AbgLWCnf (ORCPT ); Tue, 22 Dec 2020 21:43:35 -0500 Received: from mail.kernel.org ([198.145.29.99]:52452 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729873AbgLWCXE (ORCPT ); Tue, 22 Dec 2020 21:23:04 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 2F14F22248; Wed, 23 Dec 2020 02:22:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1608690143; bh=qF9l755odwp307/T/N4iq49b/ec7+MuRGg7fKtWJgkU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GG3fI/0uKfXHDg7UO1rqpzI3WHly6c8nyu0srm88rM2uu4/lBxP5v3dOonIWMRRYu EwZwLtMN0j4LXXR2F6Npfi3uRvq3RPWkWSPK3SgRUiWqrxG68CDPwAjxog9aaJ7nNP ZR0lQaxXHOU55mj41ukWT9GbtDA0lJ4e0WRmddIocmeOZyjDh5KvUsmYY0+zOF+sZV l2Pr+x+3vpYtouj7KsCnwCAy5AXcZZnTh7JheUX49J6f06RtlXUnku+u3aA3iBuT47 CUmJtQvLygv4+OlJGseV+KazpZdpU+ZJKKFMMcLAoP7Ct5hFOF6n0JBhVNx4KKj/Xr 9BxTLNRoQ1WNA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jacopo Mondi , =?UTF-8?q?Niklas=20S=C3=B6derlund?= , Hans Verkuil , Mauro Carvalho Chehab , Sasha Levin , linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 64/87] media: rcar-vin: Mask VNCSI_IFMD register Date: Tue, 22 Dec 2020 21:20:40 -0500 Message-Id: <20201223022103.2792705-64-sashal@kernel.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20201223022103.2792705-1-sashal@kernel.org> References: <20201223022103.2792705-1-sashal@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jacopo Mondi [ Upstream commit fb25ca37317200fa97ea6b8952e07958f06da7a6 ] The VNCSI_IFMD register controls the data expansion mode and the channel routing between the CSI-2 receivers and VIN instances. According to the chip manual revision 2.20 not all fields are available for all the SoCs: - V3M, V3H and E3 do not support the DES1 field has they do not feature a CSI20 receiver. - D3 only supports parallel input, and the whole register shall always be written as 0. Inspect the per-SoC channel routing table where the available CSI-2 instances are reported and configure VNCSI_IFMD accordingly. This patch supports this BSP change commit: https://github.com/renesas-rcar/linux-bsp/commit/f54697394457 ("media: rcar-vin: Fix VnCSI_IFMD register access for r8a77990") [hverkuil: replace BSP commit ID with BSP URL] Reviewed-by: Niklas Söderlund Suggested-by: Niklas Söderlund Signed-off-by: Jacopo Mondi Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/platform/rcar-vin/rcar-dma.c | 25 +++++++++++++++++++--- 1 file changed, 22 insertions(+), 3 deletions(-) diff --git a/drivers/media/platform/rcar-vin/rcar-dma.c b/drivers/media/platform/rcar-vin/rcar-dma.c index 70a8cc433a03f..4fee9132472bb 100644 --- a/drivers/media/platform/rcar-vin/rcar-dma.c +++ b/drivers/media/platform/rcar-vin/rcar-dma.c @@ -1319,7 +1319,9 @@ int rvin_dma_register(struct rvin_dev *vin, int irq) */ int rvin_set_channel_routing(struct rvin_dev *vin, u8 chsel) { - u32 ifmd, vnmc; + const struct rvin_group_route *route; + u32 ifmd = 0; + u32 vnmc; int ret; ret = pm_runtime_get_sync(vin->dev); @@ -1332,9 +1334,26 @@ int rvin_set_channel_routing(struct rvin_dev *vin, u8 chsel) vnmc = rvin_read(vin, VNMC_REG); rvin_write(vin, vnmc & ~VNMC_VUP, VNMC_REG); - ifmd = VNCSI_IFMD_DES1 | VNCSI_IFMD_DES0 | VNCSI_IFMD_CSI_CHSEL(chsel); + /* + * Set data expansion mode to "pad with 0s" by inspecting the routes + * table to find out which bit fields are available in the IFMD + * register. IFMD_DES1 controls data expansion mode for CSI20/21, + * IFMD_DES0 controls data expansion mode for CSI40/41. + */ + for (route = vin->info->routes; route->mask; route++) { + if (route->csi == RVIN_CSI20 || route->csi == RVIN_CSI21) + ifmd |= VNCSI_IFMD_DES1; + else + ifmd |= VNCSI_IFMD_DES0; - rvin_write(vin, ifmd, VNCSI_IFMD_REG); + if (ifmd == (VNCSI_IFMD_DES0 | VNCSI_IFMD_DES1)) + break; + } + + if (ifmd) { + ifmd |= VNCSI_IFMD_CSI_CHSEL(chsel); + rvin_write(vin, ifmd, VNCSI_IFMD_REG); + } vin_dbg(vin, "Set IFMD 0x%x\n", ifmd); -- 2.27.0