From patchwork Fri Nov 1 12:41:56 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rasmus Villemoes X-Patchwork-Id: 1188055 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 474P8Q6Z1pz9sP4 for ; Sat, 2 Nov 2019 01:04:54 +1100 (AEDT) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=rasmusvillemoes.dk Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=rasmusvillemoes.dk header.i=@rasmusvillemoes.dk header.b="RVI8Jc7Q"; dkim-atps=neutral Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 474P8Q4c8ZzF6Nd for ; Sat, 2 Nov 2019 01:04:54 +1100 (AEDT) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=rasmusvillemoes.dk (client-ip=2a00:1450:4864:20::241; helo=mail-lj1-x241.google.com; envelope-from=linux@rasmusvillemoes.dk; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=rasmusvillemoes.dk Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=rasmusvillemoes.dk header.i=@rasmusvillemoes.dk header.b="RVI8Jc7Q"; dkim-atps=neutral Received: from mail-lj1-x241.google.com (mail-lj1-x241.google.com [IPv6:2a00:1450:4864:20::241]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 474MKj6Pl4zF4yw for ; Fri, 1 Nov 2019 23:42:49 +1100 (AEDT) Received: by mail-lj1-x241.google.com with SMTP id q2so3561794ljg.7 for ; Fri, 01 Nov 2019 05:42:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rasmusvillemoes.dk; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=DamhDMgU5LUEj6+/3a9o1XbDY44tIM+8wHrJxcRu+uM=; b=RVI8Jc7QJXtUyehVy/2ZLH5KOcNtBY4ej4JTLrLF37ovYlpHfFGePEvhr0cru5jX5R DDSEMoiHcuFOPLrcqX/6yDYoWxYIK8sIyHPteoFu3x6hDugimd/A0m2Ca+fO2CBA9yPb r9nwKykJSVb5eDXL5KejAxr2j65tQDEYh8TcE= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=DamhDMgU5LUEj6+/3a9o1XbDY44tIM+8wHrJxcRu+uM=; b=QLJ5hX4vNAI4lZb2BPJA4wskuraEBZH+KJ9LD0Tcs7wDN2oGT8crQT8eOL3lnILM4P P79vvWud1BlaIryOdR7qaZjRfiqBSC6G4eUxK2vdTJtjpb0h9X9Tq0KtCATSm3IMhlnN gqP4dcgemzbUeRFGbDQhlRKai7gxMRBGRELLO6BP6tlqT35stHIm0MJnp6NC3PSrrxC1 xfXwfXdErjo0EppEzeqx2AAWZAVyDmQE+dOxCp1e9do1VZR2S6/wfw4pUxY7Cnbs1AAB dFUYCdTiy5PVRjcugY/feOW+Wl2Eiubl7RI5IrTNlHmFijYFXlD7AV3dS4ZaLwJ073Ws 6KaA== X-Gm-Message-State: APjAAAUVv0t+Hjtv24o3VAaVIHwza/fH/JqW1Tm0XoAsEmdCrmu1zLFQ MUrqCYxW1UjlxH1hMUATNIC+RA== X-Google-Smtp-Source: APXvYqw/XER1Nto0CvwxA4E4I56dw+GeuntyRBlwL42+o6MVyOodP98DAt6WTc3CaR2+XC/LYdM7yw== X-Received: by 2002:a2e:8204:: with SMTP id w4mr8267295ljg.212.1572612162716; Fri, 01 Nov 2019 05:42:42 -0700 (PDT) Received: from prevas-ravi.prevas.se ([81.216.59.226]) by smtp.gmail.com with ESMTPSA id o26sm2458540lfi.57.2019.11.01.05.42.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Nov 2019 05:42:42 -0700 (PDT) From: Rasmus Villemoes To: Qiang Zhao , Li Yang , Christophe Leroy Subject: [PATCH v3 22/36] soc: fsl: qe: qe.c: use of_property_read_* helpers Date: Fri, 1 Nov 2019 13:41:56 +0100 Message-Id: <20191101124210.14510-23-linux@rasmusvillemoes.dk> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191101124210.14510-1-linux@rasmusvillemoes.dk> References: <20191018125234.21825-1-linux@rasmusvillemoes.dk> <20191101124210.14510-1-linux@rasmusvillemoes.dk> MIME-Version: 1.0 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Scott Wood , Rasmus Villemoes , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" Instead of manually doing of_get_property/of_find_property and reading the value by assigning to a u32* or u64* and dereferencing, use the of_property_read_* functions. This make the code more readable, and more importantly, is required for this to work correctly on little-endian platforms. Signed-off-by: Rasmus Villemoes --- drivers/soc/fsl/qe/qe.c | 33 ++++++++------------------------- 1 file changed, 8 insertions(+), 25 deletions(-) diff --git a/drivers/soc/fsl/qe/qe.c b/drivers/soc/fsl/qe/qe.c index a4763282ea68..ec511840db3c 100644 --- a/drivers/soc/fsl/qe/qe.c +++ b/drivers/soc/fsl/qe/qe.c @@ -159,8 +159,7 @@ static unsigned int brg_clk = 0; unsigned int qe_get_brg_clk(void) { struct device_node *qe; - int size; - const u32 *prop; + u32 brg; unsigned int mod; if (brg_clk) @@ -170,9 +169,8 @@ unsigned int qe_get_brg_clk(void) if (!qe) return brg_clk; - prop = of_get_property(qe, "brg-frequency", &size); - if (prop && size == sizeof(*prop)) - brg_clk = *prop; + if (!of_property_read_u32(qe, "brg-frequency", &brg)) + brg_clk = brg; of_node_put(qe); @@ -571,11 +569,9 @@ EXPORT_SYMBOL(qe_upload_firmware); struct qe_firmware_info *qe_get_firmware_info(void) { static int initialized; - struct property *prop; struct device_node *qe; struct device_node *fw = NULL; const char *sprop; - unsigned int i; /* * If we haven't checked yet, and a driver hasn't uploaded a firmware @@ -609,20 +605,11 @@ struct qe_firmware_info *qe_get_firmware_info(void) strlcpy(qe_firmware_info.id, sprop, sizeof(qe_firmware_info.id)); - prop = of_find_property(fw, "extended-modes", NULL); - if (prop && (prop->length == sizeof(u64))) { - const u64 *iprop = prop->value; - - qe_firmware_info.extended_modes = *iprop; - } + of_property_read_u64(fw, "extended-modes", + &qe_firmware_info.extended_modes); - prop = of_find_property(fw, "virtual-traps", NULL); - if (prop && (prop->length == 32)) { - const u32 *iprop = prop->value; - - for (i = 0; i < ARRAY_SIZE(qe_firmware_info.vtraps); i++) - qe_firmware_info.vtraps[i] = iprop[i]; - } + of_property_read_u32_array(fw, "virtual-traps", qe_firmware_info.vtraps, + ARRAY_SIZE(qe_firmware_info.vtraps)); of_node_put(fw); @@ -633,17 +620,13 @@ EXPORT_SYMBOL(qe_get_firmware_info); unsigned int qe_get_num_of_risc(void) { struct device_node *qe; - int size; unsigned int num_of_risc = 0; - const u32 *prop; qe = qe_get_device_node(); if (!qe) return num_of_risc; - prop = of_get_property(qe, "fsl,qe-num-riscs", &size); - if (prop && size == sizeof(*prop)) - num_of_risc = *prop; + of_property_read_u32(qe, "fsl,qe-num-riscs", &num_of_risc); of_node_put(qe);