From patchwork Mon Aug 15 04:12:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Samuel Holland X-Patchwork-Id: 597352 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E7C7DC00140 for ; Mon, 15 Aug 2022 04:13:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240428AbiHOENq (ORCPT ); Mon, 15 Aug 2022 00:13:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40920 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240419AbiHOENZ (ORCPT ); Mon, 15 Aug 2022 00:13:25 -0400 Received: from wout1-smtp.messagingengine.com (wout1-smtp.messagingengine.com [64.147.123.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 33C9714093; Sun, 14 Aug 2022 21:13:23 -0700 (PDT) Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailout.west.internal (Postfix) with ESMTP id 06FB132005D8; Mon, 15 Aug 2022 00:13:21 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute5.internal (MEProxy); Mon, 15 Aug 2022 00:13:23 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sholland.org; h= cc:cc:content-transfer-encoding:date:date:from:from:in-reply-to :in-reply-to:message-id:mime-version:references:reply-to:sender :subject:subject:to:to; s=fm2; t=1660536801; x=1660623201; bh=9B C0LSiPGpFiksVoDFV8G0WmbmUqGVokgFnFCFXLEhw=; b=mV9deqOP4HVpwJzUVi 6gZ24/IBdEJVUOcoJxJ5FUR4wtecQswdVNL3hR41XcubZjrP0taz1SOc7uYn0b1D RcxWROtd5nc9ICKtvpyzwBVyFYRl5OlDFzt7URr9Ei+DsIW9eEGBvP2n0QNF8Lqd tr24vKmmf8eQK6K3tGS+AR5idO2CGfqA0OveWoLFHggH7kzczjYUC+wgVYVAUgS3 zEeV2UqS0/FFarPuYtU5pcPMubeyPYTjrVI6rrJRPaAZf/cyCMpRBnGs0s9Hotp1 Sg5PxdRfgLVxsjE6D+TNPPfDI05JVruz+PIYd3x2P1vwp9RZOZ00oVkRTQ238P+Y cibg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding:date:date :feedback-id:feedback-id:from:from:in-reply-to:in-reply-to :message-id:mime-version:references:reply-to:sender:subject :subject:to:to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender :x-sasl-enc; s=fm1; t=1660536801; x=1660623201; bh=9BC0LSiPGpFik sVoDFV8G0WmbmUqGVokgFnFCFXLEhw=; b=QNgedk6eIxXmLDs8HLQaP4CbIW0uv 4R5fmJ96hF9HyYQjzCM6MFWU3mpXxao8C70CFuRct+KRgHRZlnXU+ro6WCemeovA A1vyR2pAb0rPPoKrKxAnj4AksZw3TCeUJTJvUbG3bNnhJC08S/Z+iEDgFVKGo60f KWV/og1OIHeNXyjYvy09FMJsJ5yxR8rJMopQUwIR9SHWEcJQZkvCa9HHJqv/845j 8nsJUgCEJvCtUCya1ys5GgoaPx0lj3yzDAxbEcJp909AGV0V/JniGDePTXi7hoAG nc6yVqYV3A/msnyL9g1bnlXCKaN79Xlwb9fboXaF1nWmHexJKQgvwV+2w== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvfedrvdehuddgkeehucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvvefufffkofgjfhgggfestdekredtredttdenucfhrhhomhepufgrmhhu vghlucfjohhllhgrnhguuceoshgrmhhuvghlsehshhholhhlrghnugdrohhrgheqnecugg ftrfgrthhtvghrnhepudekteeuudehtdelteevgfduvddvjefhfedulefgudevgeeghefg udefiedtveetnecuvehluhhsthgvrhfuihiivgepgeenucfrrghrrghmpehmrghilhhfrh homhepshgrmhhuvghlsehshhholhhlrghnugdrohhrgh X-ME-Proxy: Feedback-ID: i0ad843c9:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Mon, 15 Aug 2022 00:13:20 -0400 (EDT) From: Samuel Holland To: Chen-Yu Tsai , Jernej Skrabec Cc: Samuel Holland , Arnd Bergmann , Hans de Goede , Icenowy Zheng , Krzysztof Kozlowski , Maxime Ripard , Rob Herring , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-sunxi@lists.linux.dev Subject: [PATCH v2 09/10] soc: sunxi: sram: Export the LDO control register Date: Sun, 14 Aug 2022 23:12:46 -0500 Message-Id: <20220815041248.53268-10-samuel@sholland.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220815041248.53268-1-samuel@sholland.org> References: <20220815041248.53268-1-samuel@sholland.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Some newer Allwinner SoCs contain internal LDOs managed by a register in the system control MMIO space. Export this from the regmap in addtion to the EMAC register. Use generic names now that the regmap is no longer EMAC-specific. Acked-by: Jernej Skrabec Signed-off-by: Samuel Holland --- (no changes since v1) drivers/soc/sunxi/sunxi_sram.c | 30 ++++++++++++++++-------------- 1 file changed, 16 insertions(+), 14 deletions(-) diff --git a/drivers/soc/sunxi/sunxi_sram.c b/drivers/soc/sunxi/sunxi_sram.c index 7c6fb17cfe7f..7e8dab0f0ec4 100644 --- a/drivers/soc/sunxi/sunxi_sram.c +++ b/drivers/soc/sunxi/sunxi_sram.c @@ -283,6 +283,7 @@ EXPORT_SYMBOL(sunxi_sram_release); struct sunxi_sramc_variant { int num_emac_clocks; + bool has_ldo_ctrl; }; static const struct sunxi_sramc_variant sun4i_a10_sramc_variant = { @@ -302,25 +303,28 @@ static const struct sunxi_sramc_variant sun50i_h616_sramc_variant = { }; #define SUNXI_SRAM_EMAC_CLOCK_REG 0x30 +#define SUNXI_SYS_LDO_CTRL_REG 0x150 + static bool sunxi_sram_regmap_accessible_reg(struct device *dev, unsigned int reg) { const struct sunxi_sramc_variant *variant = dev_get_drvdata(dev); - if (reg < SUNXI_SRAM_EMAC_CLOCK_REG) - return false; - if (reg > SUNXI_SRAM_EMAC_CLOCK_REG + variant->num_emac_clocks * 4) - return false; + if (reg >= SUNXI_SRAM_EMAC_CLOCK_REG && + reg < SUNXI_SRAM_EMAC_CLOCK_REG + variant->num_emac_clocks * 4) + return true; + if (reg == SUNXI_SYS_LDO_CTRL_REG && variant->has_ldo_ctrl) + return true; - return true; + return false; } -static struct regmap_config sunxi_sram_emac_clock_regmap = { +static struct regmap_config sunxi_sram_regmap_config = { .reg_bits = 32, .val_bits = 32, .reg_stride = 4, /* last defined register */ - .max_register = SUNXI_SRAM_EMAC_CLOCK_REG + 4, + .max_register = SUNXI_SYS_LDO_CTRL_REG, /* other devices have no business accessing other registers */ .readable_reg = sunxi_sram_regmap_accessible_reg, .writeable_reg = sunxi_sram_regmap_accessible_reg, @@ -328,9 +332,9 @@ static struct regmap_config sunxi_sram_emac_clock_regmap = { static int __init sunxi_sram_probe(struct platform_device *pdev) { - struct regmap *emac_clock; const struct sunxi_sramc_variant *variant; struct device *dev = &pdev->dev; + struct regmap *regmap; sram_dev = &pdev->dev; @@ -344,12 +348,10 @@ static int __init sunxi_sram_probe(struct platform_device *pdev) if (IS_ERR(base)) return PTR_ERR(base); - if (variant->num_emac_clocks > 0) { - emac_clock = devm_regmap_init_mmio(&pdev->dev, base, - &sunxi_sram_emac_clock_regmap); - - if (IS_ERR(emac_clock)) - return PTR_ERR(emac_clock); + if (variant->num_emac_clocks || variant->has_ldo_ctrl) { + regmap = devm_regmap_init_mmio(dev, base, &sunxi_sram_regmap_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); } of_platform_populate(dev->of_node, NULL, NULL, dev);