From patchwork Mon May 27 13:32:16 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Niklas_S=C3=B6derlund?= X-Patchwork-Id: 13675275 Received: from wfout6-smtp.messagingengine.com (wfout6-smtp.messagingengine.com [64.147.123.149]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6417E15F416; Mon, 27 May 2024 13:32:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=64.147.123.149 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716816763; cv=none; b=BjNkguTWqoSxun3pl2D435oFKjwzxY/YxSq7ncrbs5HINEtxy67YKGB4Xw7E2MYKaaKqBSIXlk0VK3zpGwC0VIvKe30LiWVQOn+SDcrpBCav0XFLElFXV/P/8XOJelM1HurpD+qP+donWwpfyJ1ZyA21rP84X4igyglUL6TwHi0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716816763; c=relaxed/simple; bh=qVkTmP7bQnYIRaR5/MHlXhoTsZNoIzAsKDT6o8PbYho=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=beg4/pn9WUORFVT47PMhkz6M4dF9RweL5n3PLqW5SczjE2RN2WFvQ5jiiQPtMp9FHzwAJwwHZgWc5M/0NsC9OafH8STjAU89+0mxpwApcPUeIDKTk9Cwy9mtOdj78j8nr8VdY845aAQomciuVQxT7rGgq8Uza26tDiV4lslR8LI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ragnatech.se; spf=pass smtp.mailfrom=ragnatech.se; dkim=pass (2048-bit key) header.d=ragnatech.se header.i=@ragnatech.se header.b=rjc1bziL; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b=gBV2zdjk; arc=none smtp.client-ip=64.147.123.149 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ragnatech.se Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ragnatech.se Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ragnatech.se header.i=@ragnatech.se header.b="rjc1bziL"; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="gBV2zdjk" Received: from compute7.internal (compute7.nyi.internal [10.202.2.48]) by mailfout.west.internal (Postfix) with ESMTP id 6EC111C000CD; Mon, 27 May 2024 09:32:40 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute7.internal (MEProxy); Mon, 27 May 2024 09:32:40 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ragnatech.se; h= cc:cc:content-transfer-encoding:content-type:content-type:date :date:from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:subject:subject:to:to; s=fm3; t=1716816760; x=1716903160; bh=8N1+W8d7rjdLSoykSwGNaIORjBn/+Ek/uP16hP0M3cA=; b= rjc1bziLKZvNYWXsYtHzUplmmJBryMndCMv625Z1SwV7iMbLbvhYn9KDE1/q3myS v9abbTf8uhzzGl0EGB2obkmOUqznSJyyJgwdsaJvrG3U/MhoyFn40N/9CHOiPumj tshJRGSTurpMHGC5pzk4AvBPsYhMlagzGcozv5lp81moxwAnhh8+65JHN7Iy+2xA zx2GIPCcxy8HN0KLxYGWxr4goUsg0NLs1edNcgwHl6+B4TotW1phw9VMS7alwwBX FdEsJ/OZ+ZwfPNb0W5G3zNImccorwXCHPIfiRq/XF0BgbGO21dc4CbyudDJoQXEY Nzcn/a4qlUd2h3F2Orh9ew== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:content-type:date:date:feedback-id:feedback-id :from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:subject:subject:to:to:x-me-proxy:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm1; t=1716816760; x= 1716903160; bh=8N1+W8d7rjdLSoykSwGNaIORjBn/+Ek/uP16hP0M3cA=; b=g BV2zdjk8Ue8yq46dHqIg+AM4V+sX4iMg2GTa38eNX134VY3h9XqqVEApVaQv76s1 gNmGgGeKPPmuiOJfEb0HbHDCWOV3g3aPN9lknk6fLOmJBcohMd8jUV1cDkDP6wYV DXrmuuDSBIyUlNefOIeYR0ApDgyNVkmeBLQoQeiDvphiS8In89fireMXwVrNUv5m tc99WVNrbpT1fpsQN006FOanux8touU+QqybMBshsDFYuGOanEy6o7pclmmFK+2Q IR7OAtxM2Fg7h76U9sJFM2PbptB/hJafiXxoV9CTuBGDmgb7U0q/n9fD8rc1TDFg zva4kkc2PpIC5lI/vmBbw== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvledrvdejgedgieegucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvvefufffkofgjfhggtgfgsehtkeertdertdejnecuhfhrohhmpefpihhk lhgrshcuufpnuggvrhhluhhnugcuoehnihhklhgrshdrshhouggvrhhluhhnugdorhgvnh gvshgrshesrhgrghhnrghtvggthhdrshgvqeenucggtffrrghtthgvrhhnpeehiefgueev uedtfefhheegkeevtdelueeukeevfeduhefhhfejfffggeffleefgeenucevlhhushhtvg hrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpehnihhklhgrshdrshhouggv rhhluhhnugdorhgvnhgvshgrshesrhgrghhnrghtvggthhdrshgv X-ME-Proxy: Feedback-ID: i80c9496c:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Mon, 27 May 2024 09:32:38 -0400 (EDT) From: =?utf-8?q?Niklas_S=C3=B6derlund?= To: Mauro Carvalho Chehab , Geert Uytterhoeven , linux-media@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, =?utf-8?q?Niklas_S=C3=B6derlund?= Subject: [PATCH 2/7] media: rcar-csi2: Allow writing any code and data value to PHTW Date: Mon, 27 May 2024 15:32:16 +0200 Message-ID: <20240527133221.1688830-3-niklas.soderlund+renesas@ragnatech.se> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240527133221.1688830-1-niklas.soderlund+renesas@ragnatech.se> References: <20240527133221.1688830-1-niklas.soderlund+renesas@ragnatech.se> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The helper to write an array of code and data values to the PHY Test Interface Write Register (PHTW) register uses the case where both code and data are zero as an exit condition. This prevents writing data = 0 and code = 0 to the register. Up until now this has been OK as no such combination where needed, and it was a convenient exit condition. In future writing data = 0 and code = 0 to the PHTW register will be needed. Avoid using an exit condition when writing an array of PHTW values and instead pass the length of the array to the helper. This allows any combination of code and data to be written. Signed-off-by: Niklas Söderlund --- drivers/media/platform/renesas/rcar-csi2.c | 29 ++++++++-------------- 1 file changed, 11 insertions(+), 18 deletions(-) diff --git a/drivers/media/platform/renesas/rcar-csi2.c b/drivers/media/platform/renesas/rcar-csi2.c index 6cc128990140..c02e1ec6600d 100644 --- a/drivers/media/platform/renesas/rcar-csi2.c +++ b/drivers/media/platform/renesas/rcar-csi2.c @@ -1447,13 +1447,13 @@ static int rcsi2_phtw_write(struct rcar_csi2 *priv, u8 data, u8 code) } static int rcsi2_phtw_write_array(struct rcar_csi2 *priv, - const struct phtw_value *values) + const struct phtw_value *values, + unsigned int size) { - const struct phtw_value *value; int ret; - for (value = values; value->data || value->code; value++) { - ret = rcsi2_phtw_write(priv, value->data, value->code); + for (unsigned int i = 0; i < size; i++) { + ret = rcsi2_phtw_write(priv, values[i].data, values[i].code); if (ret) return ret; } @@ -1494,7 +1494,6 @@ static int __rcsi2_init_phtw_h3_v3h_m3n(struct rcar_csi2 *priv, { .data = 0x11, .code = 0xe4 }, { .data = 0x01, .code = 0xe5 }, { .data = 0x10, .code = 0x04 }, - { /* sentinel */ }, }; static const struct phtw_value step2[] = { @@ -1503,12 +1502,11 @@ static int __rcsi2_init_phtw_h3_v3h_m3n(struct rcar_csi2 *priv, { .data = 0x4b, .code = 0xac }, { .data = 0x03, .code = 0x00 }, { .data = 0x80, .code = 0x07 }, - { /* sentinel */ }, }; int ret; - ret = rcsi2_phtw_write_array(priv, step1); + ret = rcsi2_phtw_write_array(priv, step1, ARRAY_SIZE(step1)); if (ret) return ret; @@ -1523,7 +1521,7 @@ static int __rcsi2_init_phtw_h3_v3h_m3n(struct rcar_csi2 *priv, return ret; } - return rcsi2_phtw_write_array(priv, step2); + return rcsi2_phtw_write_array(priv, step2, ARRAY_SIZE(step2)); } static int rcsi2_init_phtw_h3_v3h_m3n(struct rcar_csi2 *priv, unsigned int mbps) @@ -1549,10 +1547,9 @@ static int rcsi2_phy_post_init_v3m_e3(struct rcar_csi2 *priv) { .data = 0xee, .code = 0x54 }, { .data = 0xee, .code = 0x84 }, { .data = 0xee, .code = 0x94 }, - { /* sentinel */ }, }; - return rcsi2_phtw_write_array(priv, step1); + return rcsi2_phtw_write_array(priv, step1, ARRAY_SIZE(step1)); } static int rcsi2_init_phtw_v3u(struct rcar_csi2 *priv, @@ -1561,20 +1558,17 @@ static int rcsi2_init_phtw_v3u(struct rcar_csi2 *priv, /* In case of 1500Mbps or less */ static const struct phtw_value step1[] = { { .data = 0xcc, .code = 0xe2 }, - { /* sentinel */ }, }; static const struct phtw_value step2[] = { { .data = 0x01, .code = 0xe3 }, { .data = 0x11, .code = 0xe4 }, { .data = 0x01, .code = 0xe5 }, - { /* sentinel */ }, }; /* In case of 1500Mbps or less */ static const struct phtw_value step3[] = { { .data = 0x38, .code = 0x08 }, - { /* sentinel */ }, }; static const struct phtw_value step4[] = { @@ -1582,29 +1576,28 @@ static int rcsi2_init_phtw_v3u(struct rcar_csi2 *priv, { .data = 0x4b, .code = 0xac }, { .data = 0x03, .code = 0x00 }, { .data = 0x80, .code = 0x07 }, - { /* sentinel */ }, }; int ret; if (mbps != 0 && mbps <= 1500) - ret = rcsi2_phtw_write_array(priv, step1); + ret = rcsi2_phtw_write_array(priv, step1, ARRAY_SIZE(step1)); else ret = rcsi2_phtw_write_mbps(priv, mbps, phtw_mbps_v3u, 0xe2); if (ret) return ret; - ret = rcsi2_phtw_write_array(priv, step2); + ret = rcsi2_phtw_write_array(priv, step2, ARRAY_SIZE(step2)); if (ret) return ret; if (mbps != 0 && mbps <= 1500) { - ret = rcsi2_phtw_write_array(priv, step3); + ret = rcsi2_phtw_write_array(priv, step3, ARRAY_SIZE(step3)); if (ret) return ret; } - ret = rcsi2_phtw_write_array(priv, step4); + ret = rcsi2_phtw_write_array(priv, step4, ARRAY_SIZE(step4)); if (ret) return ret;