From patchwork Thu Aug 29 16:50:48 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: 13783439 Received: from fout5-smtp.messagingengine.com (fout5-smtp.messagingengine.com [103.168.172.148]) (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 043E81B5ED4; Thu, 29 Aug 2024 16:51:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=103.168.172.148 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724950289; cv=none; b=cyTCAdwN0FAxEyeNmSmKnEIbmY+QDt9LNsjft8RK9wFU7VhgtzsPHn1cIV9/49Cfr2Et+Dstyj8wDpEX9VYKfMZ5pCldjeI+1Aa2vX/Ju7tiTrLfmsQUuUCKIEC+bosyPNrwhL87b9/J6nYdgmVbfMGeQ/4we2xcOU7/sz/Y9qQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724950289; c=relaxed/simple; bh=kiS0jm7lCLlbf+dBw7GOY+2Sqws0+VatRwPAKqWYFao=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=tZ6sQIVzZ1cDuo0QBHfxULH8zeW7poXibK9baOn8Zcr+1q6YzMK8BgYVEyxIB87MH8ZjptyNulHiYZ0KbREZlHgLlq0tSy756X4VX+1BiXltC3D9erVMQweW69Gd+2i7BqMXOF6+5GJWp/MT5X0Yy6qjfpn7AwuQLVOWvXTUaRs= 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=LrR4rM16; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b=RmD1ZbyT; arc=none smtp.client-ip=103.168.172.148 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="LrR4rM16"; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="RmD1ZbyT" Received: from phl-compute-03.internal (phl-compute-03.nyi.internal [10.202.2.43]) by mailfout.nyi.internal (Postfix) with ESMTP id 37894138FFE1; Thu, 29 Aug 2024 12:51:26 -0400 (EDT) Received: from phl-mailfrontend-02 ([10.202.2.163]) by phl-compute-03.internal (MEProxy); Thu, 29 Aug 2024 12:51:26 -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=1724950286; x=1725036686; bh=x6A4LGX/1vq2toB9ZhoQhgcOMtPHQMbLf4ivt2Pc0Y8=; b= LrR4rM16qTHeUG0TR/OCWM1AVjei/lRFYMYz6z2+hvZEcFJxXrAxXBRdhHnJNW3Z nNDVBFHQrEkF2MNqsJ8zC9iHruIIgrzTJIs7KSBKYQYCLKvZuIi8sa1lvxk7UHOK sCtFFlcPlP4Nw7CVIbdGgOmu8a2rysIzEfmhuZAV2Kxy0n2R8PCdjY5lHkFi7Oof DWb072YMBqtK5mzQ190Y3FfQSFr3+L9PI8MhXraWMLvB4jNPzIOwP2re+Z6IZewr oUT3E2+R9mGodb0m653dyD9xhaDWvB8XMNWTrD6Tir7iEQPNpRMP3MeQPhVFwP6w JKlKzhwsQyFz5GhBA4pNHw== 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=1724950286; x= 1725036686; bh=x6A4LGX/1vq2toB9ZhoQhgcOMtPHQMbLf4ivt2Pc0Y8=; b=R mD1ZbyTD0N+glOtwK2VWL/1M4XpUzNKqB94KqwHAF99PskJx4ddu6FVRTG0bneLt Qr9GemOxGep/ACZx7mGmDsOTAeLpB6z4+msGFiV3YkNSeouA16/UTxQU+TmINCXU g/kNyD8iE9AAkMkDB7W93+l0HGQ8j4hmpE1PXnTKj64PezjOejbs41BeMGVsgBpu tldgte1qdMjqYpV9wuYs2h8kFjzSGFGKLyr6K9yRxf/1eax7sNyWXGFYGvPtQp9F 2YVxZdzfdPfmQ3PkieBWDkZzh0T9mwln0Y3BBoZC7Nv2rxmPn/TWZ9uWxspENRbG 2aCvDdYftcCleSnUq6DFA== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeeftddrudefgedguddthecutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpggftfghnshhusghstghrihgsvgdp uffrtefokffrpgfnqfghnecuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivg hnthhsucdlqddutddtmdenucfjughrpefhvfevufffkffojghfgggtgfesthekredtredt jeenucfhrhhomheppfhikhhlrghsucfunpguvghrlhhunhguuceonhhikhhlrghsrdhsoh guvghrlhhunhguodhrvghnvghsrghssehrrghgnhgrthgvtghhrdhsvgeqnecuggftrfgr thhtvghrnhepheeigfeuveeutdefhfehgeekvedtleeuueekveefudehhffhjeffgfegff elfeegnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrhhomhep nhhikhhlrghsrdhsohguvghrlhhunhgusehrrghgnhgrthgvtghhrdhsvgdpnhgspghrtg hpthhtohepuddvpdhmohguvgepshhmthhpohhuthdprhgtphhtthhopehmtghhvghhrggs sehkvghrnhgvlhdrohhrghdprhgtphhtthhopehrohgshheskhgvrhhnvghlrdhorhhgpd hrtghpthhtohepkhhriihkodgutheskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheptgho nhhorhdoughtsehkvghrnhgvlhdrohhrghdprhgtphhtthhopehgrhgvghhkhheslhhinh hugihfohhunhgurghtihhonhdrohhrghdprhgtphhtthhopehsrghkrghrihdrrghilhhu shesihhkihdrfhhipdhrtghpthhtohepjhhulhhivghnrdhmrghsshhothestgholhhlrg gsohhrrgdrtghomhdprhgtphhtthhopehlihhnuhigqdhmvgguihgrsehvghgvrhdrkhgv rhhnvghlrdhorhhgpdhrtghpthhtohepuggvvhhitggvthhrvggvsehvghgvrhdrkhgvrh hnvghlrdhorhhg X-ME-Proxy: Feedback-ID: i80c9496c:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Thu, 29 Aug 2024 12:51:25 -0400 (EDT) From: =?utf-8?q?Niklas_S=C3=B6derlund?= To: Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Greg Kroah-Hartman , Sakari Ailus , Julien Massot , linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-staging@lists.linux.dev Cc: linux-renesas-soc@vger.kernel.org, =?utf-8?q?Niklas_S=C3=B6derlund?= Subject: [PATCH v3 2/5] media: staging: max96712: Remove device id check Date: Thu, 29 Aug 2024 18:50:48 +0200 Message-ID: <20240829165051.2498867-3-niklas.soderlund+renesas@ragnatech.se> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240829165051.2498867-1-niklas.soderlund+renesas@ragnatech.se> References: <20240829165051.2498867-1-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 This check is incorrect and checks the wrong register. Furthermore there is no documented shared device id register for MAX96712. There might be overlap with the soon to be added MAX96724 device which do document such a register. However as the check was merely a precaution and to check during development that the driver could talk to the device there is no harm in removing it all together. A correct and more sophisticated check can be added later if there ever is a need to differentiate between different versions of a device. Signed-off-by: Niklas Söderlund --- * Changes since v2 - New in v3. --- drivers/staging/media/max96712/max96712.c | 18 ------------------ 1 file changed, 18 deletions(-) diff --git a/drivers/staging/media/max96712/max96712.c b/drivers/staging/media/max96712/max96712.c index 6bdbccbee05a..07f353f60e71 100644 --- a/drivers/staging/media/max96712/max96712.c +++ b/drivers/staging/media/max96712/max96712.c @@ -16,8 +16,6 @@ #include #include -#define MAX96712_ID 0x20 - #define MAX96712_DPLL_FREQ 1000 enum max96712_pattern { @@ -40,19 +38,6 @@ struct max96712_priv { enum max96712_pattern pattern; }; -static int max96712_read(struct max96712_priv *priv, int reg) -{ - int ret, val; - - ret = regmap_read(priv->regmap, reg, &val); - if (ret) { - dev_err(&priv->client->dev, "read 0x%04x failed\n", reg); - return ret; - } - - return val; -} - static int max96712_write(struct max96712_priv *priv, unsigned int reg, u8 val) { int ret; @@ -438,9 +423,6 @@ static int max96712_probe(struct i2c_client *client) if (priv->gpiod_pwdn) usleep_range(4000, 5000); - if (max96712_read(priv, 0x4a) != MAX96712_ID) - return -ENODEV; - max96712_reset(priv); ret = max96712_parse_dt(priv);