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Sat, 26 Dec 2020 09:47:39 +0000 From: Oleksandr Suvorov To: linux-next@vger.kernel.org Cc: Marcel Ziswiler , Igor Opaniuk , Philippe Schenker , Oleksandr Suvorov , Alexandre Torgue , Lee Jones , Maxime Coquelin , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com Subject: [PATCH] mfd: stmpe: Support disabling sub-functions Date: Sat, 26 Dec 2020 11:47:22 +0200 Message-Id: <20201226094722.16580-1-oleksandr.suvorov@toradex.com> X-Mailer: git-send-email 2.29.2 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [82.193.109.226] X-ClientProxiedBy: AM3PR04CA0128.eurprd04.prod.outlook.com (2603:10a6:207::12) To AM0PR05MB6002.eurprd05.prod.outlook.com (2603:10a6:208:129::19) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from cryobook.toradex.int (82.193.109.226) by AM3PR04CA0128.eurprd04.prod.outlook.com (2603:10a6:207::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3700.27 via Frontend Transport; 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It allows one to define an stmpe sub-function device in devicetree, but keep it disabled. Signed-off-by: Oleksandr Suvorov --- drivers/mfd/stmpe.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c index 90f3292230c9..2182607b75f6 100644 --- a/drivers/mfd/stmpe.c +++ b/drivers/mfd/stmpe.c @@ -1358,6 +1358,9 @@ static void stmpe_of_probe(struct stmpe_platform_data *pdata, pdata->autosleep = (pdata->autosleep_timeout) ? true : false; for_each_child_of_node(np, child) { + /* skip disabled sub-function */ + if (!of_device_is_available(child)) + continue; if (of_node_name_eq(child, "stmpe_gpio")) { pdata->blocks |= STMPE_BLOCK_GPIO; } else if (of_node_name_eq(child, "stmpe_keypad")) { -- 2.29.2