From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-qv1-f49.google.com (mail-qv1-f49.google.com [209.85.219.49]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5EA5F2882C5 for ; Wed, 2 Jul 2025 21:37:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.49 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751492230; cv=none; b=pqojbn6gFRYA0RZhg+q5Vvt9j82xzccnOyPyuin0l8W3FLDzGQkDSEQS6kHQG0tfFoPWtlwJhyFunlR8lhX/1gAWl832W9xN2jnDqERbvBaINADvdgQTJRcF8cnQQBFrOpYhV2U6doQvF8U+tn73iA/1gV9aCwPiRSvAFFPRYQs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751492230; c=relaxed/simple; bh=WB/IrpIB/wfBJbu5dFJUlcKQY59F+HJ0MTfMkd8sfQM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=SGKeYL3NRxrv0OPlRVuQIXqTw4hW2/a3MMXgplIXBpSu9j9R0HCQQM2WY7RJ/KolnRhpBY2WqvRjsi7gFGC19Bk3lXY7krp6CgxCeoSFFLFBz2vajMKe5Q5kGi+6O2Gvl3uXJcALZok33EmJQzCOU+/wzryjJwJYbgmygX2N0Uo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=riscstar.com; spf=pass smtp.mailfrom=riscstar.com; dkim=pass (2048-bit key) header.d=riscstar-com.20230601.gappssmtp.com header.i=@riscstar-com.20230601.gappssmtp.com header.b=R9bum3YR; arc=none smtp.client-ip=209.85.219.49 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=riscstar.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=riscstar.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=riscstar-com.20230601.gappssmtp.com header.i=@riscstar-com.20230601.gappssmtp.com header.b="R9bum3YR" Received: by mail-qv1-f49.google.com with SMTP id 6a1803df08f44-6fad3400ea3so68095976d6.0 for ; Wed, 02 Jul 2025 14:37:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=riscstar-com.20230601.gappssmtp.com; s=20230601; t=1751492227; x=1752097027; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Z77tQyjzfW0dcmF8i2CALNcRi1lkFInteyFHSr2VXyM=; b=R9bum3YRUI7UInsDEmkEa3gyb9TT9B94Yfr7hlcPcUAUpwyqK25pNA7A2mDwoMoHkZ B7YiQbmaFJ2j/9clB9KfnP7Cqn16jpzk2P6ajpLyg0eYANj9LAxSG+fL5Yd+IbxPI5RG 5fzMgo/ApASZ2NoLfHfH6rBd8E5fVcCZzzZIDpmnEDTBvh7pfrIQBphyTkvUeKj7VL53 XjGJVoXX6HgYusbCikekUfoDDEl5j2bP72zwrfH70R5heoX+SoNWNlnHI7cAlUqv7wHN zrzARjvhn4IwbfObJmVXZrK+zMUF8X2KjgT1yB+BZD5h8VmZHbacqd/I7rZum/ax/Exa SI+Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1751492227; x=1752097027; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Z77tQyjzfW0dcmF8i2CALNcRi1lkFInteyFHSr2VXyM=; b=RIutixaO9XdQiLGysJVjGNHiywOJtRL2lr98W8fEJ63NAYFgLvArA1ZniMA8744yZN nM7jUclX0B6PvfV7oIU7Yy74lYrc7z3Z/tIifzYCej+42gCZRHYNuLbjT52hIvLr4I8Y foBGnEK/tDH0MKM+obLqIVGJiUkK2jVAsWmZG8WTtShtGvTL+KZCerGnGhAhkp3tXcFX jWl1q6qf6PZ/iQg9isClKNpb1Fws7RsZbD1RnWs9QzM0FZYatykK5x63Fj+U4xtCryzb omnISiINK9TViSBnwKrWQsy2ipGOmRuIgwcOTUIaHTQIIKlDfN1XFJh+F6OwEU+cr41V 0oVg== X-Forwarded-Encrypted: i=1; AJvYcCXPzsfd7HdgXVqsk/ETrhPv8/JSfoGQN4K0r568MY/K3xH+QSIbsmwmx4qQDm9QMRY5zi6dFmMG/OQ=@vger.kernel.org X-Gm-Message-State: AOJu0Yz/zuLCIs8WEmoJytS2mVPgfAFF/ka1aKR/nLdB4hW2pLf5BifN A9Vo875vv3cfBoVdFo9y+ErO9n0GkrnUHwHNSZPgxHx1TO0DlO8ogtA5acboSclZHjY= X-Gm-Gg: ASbGncsZUYzeqq+POnrPu+k+Pi6gWkzFd/GfM/NDfc6/PlqxtnJ0H6WHlT1MfCRoAN9 QELtlUv91qGC7H66gvQ/P88GV51Q8L3S1yZ3PyV/ZM2dmCvOPzJy/dFXBkF+druPVdsddnqTQq0 nqoEFIAL1AtLBSJf2p9Ae1OQR/fwdorH0eUxhA8owMlvYnpVdXrH0DWyHDUsq/sjFOrg8CvDpE+ rTZMmbDI6jSLalB9OaSKZjBcHSGUz7j3wa7vK9dxBHMflANxPH45dWtnlL60FeptDlWmow4Wrf6 PJXXhKo9n0PdZ+Mgy6xrBze9K6GUE8w0wJL7ngOOWLvJUaB6m+Nzoff93ArbzGATFNti1C7yAMB G5MMNYgkgo7baJLCEiBI4XHY2edOP4kSufTk= X-Google-Smtp-Source: AGHT+IGRObx6Rpk1Zs9IQPZXVPL/wda/SaVAzAggTxX0GxDaBqWEjwz2sqTqj864Fw46dZI0C1TGsA== X-Received: by 2002:a05:6214:2342:b0:6fb:66cb:5112 with SMTP id 6a1803df08f44-702b1c1ed54mr54743616d6.43.1751492226919; Wed, 02 Jul 2025 14:37:06 -0700 (PDT) Received: from localhost.localdomain (c-73-228-159-35.hsd1.mn.comcast.net. [73.228.159.35]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-6fd771bc01bsm105691746d6.40.2025.07.02.14.37.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Jul 2025 14:37:06 -0700 (PDT) From: Alex Elder To: lee@kernel.org, lgirdwood@gmail.com, broonie@kernel.org, alexandre.belloni@bootlin.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org Cc: mat.jonczyk@o2.pl, dlan@gentoo.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, alex@ghiti.fr, troymitchell988@gmail.com, guodong@riscstar.com, linux-rtc@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH v7 2/8] mfd: simple-mfd-i2c: specify max_register Date: Wed, 2 Jul 2025 16:36:51 -0500 Message-ID: <20250702213658.545163-3-elder@riscstar.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20250702213658.545163-1-elder@riscstar.com> References: <20250702213658.545163-1-elder@riscstar.com> Precedence: bulk X-Mailing-List: linux-rtc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit All devices supported by simple MFD use the same 8-bit register 8-bit value regmap configuration. There is an option available for a device to specify a custom configuration, but no existing device uses it. Rather than specify a "full" regmap configuration to use this option, Lee Jones suggested allowing just the max_register value to be specified in the simple_mfd_data structure. Signed-off-by: Alex Elder Suggested-by: Lee Jones --- v2: - Allow max_register *and* regmap_config to be supplied drivers/mfd/simple-mfd-i2c.c | 15 ++++++++++++--- drivers/mfd/simple-mfd-i2c.h | 1 + 2 files changed, 13 insertions(+), 3 deletions(-) diff --git a/drivers/mfd/simple-mfd-i2c.c b/drivers/mfd/simple-mfd-i2c.c index 22159913bea03..3f959f4f98261 100644 --- a/drivers/mfd/simple-mfd-i2c.c +++ b/drivers/mfd/simple-mfd-i2c.c @@ -33,16 +33,25 @@ static int simple_mfd_i2c_probe(struct i2c_client *i2c) { const struct simple_mfd_data *simple_mfd_data; const struct regmap_config *regmap_config; + struct regmap_config config; struct regmap *regmap; int ret; simple_mfd_data = device_get_match_data(&i2c->dev); /* If no regmap_config is specified, use the default 8reg and 8val bits */ - if (!simple_mfd_data || !simple_mfd_data->regmap_config) + if (simple_mfd_data) { + if (simple_mfd_data->regmap_config) + config = *simple_mfd_data->regmap_config; + else + config = regmap_config_8r_8v; + + if (simple_mfd_data->max_register) + config.max_register = simple_mfd_data->max_register; + regmap_config = &config; + } else { regmap_config = ®map_config_8r_8v; - else - regmap_config = simple_mfd_data->regmap_config; + } regmap = devm_regmap_init_i2c(i2c, regmap_config); if (IS_ERR(regmap)) diff --git a/drivers/mfd/simple-mfd-i2c.h b/drivers/mfd/simple-mfd-i2c.h index 7cb2bdd347d97..706b6f53155ff 100644 --- a/drivers/mfd/simple-mfd-i2c.h +++ b/drivers/mfd/simple-mfd-i2c.h @@ -27,6 +27,7 @@ struct simple_mfd_data { const struct regmap_config *regmap_config; const struct mfd_cell *mfd_cell; size_t mfd_cell_size; + unsigned int max_register; }; #endif /* __MFD_SIMPLE_MFD_I2C_H */ -- 2.45.2