Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
To:     linux-next@vger.kernel.org
Cc:     Marcel Ziswiler <marcel.ziswiler@toradex.com>,
        Igor Opaniuk <igor.opaniuk@toradex.com>,
        Philippe Schenker <philippe.schenker@toradex.com>,
        Oleksandr Suvorov <oleksandr.suvorov@toradex.com>,
        Alexandre Torgue <alexandre.torgue@st.com>,
        Lee Jones <lee.jones@linaro.org>,
        Maxime Coquelin <mcoquelin.stm32@gmail.com>,
        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>
Content-Transfer-Encoding: 8bit
Content-Type: text/plain
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; Sat, 26 Dec 2020 09:47:38 +0000
X-MS-PublicTrafficType: Email
X-MS-Office365-Filtering-Correlation-Id: 2d3f1cb5-b4e6-413d-23b6-08d8a983489a
X-MS-TrafficTypeDiagnostic: AM0PR05MB6001:
X-MS-Exchange-Transport-Forked: True
X-Microsoft-Antispam-PRVS: <AM0PR05MB6001784339258CED2C16177CF9DB0@AM0PR05MB6001.eurprd05.prod.outlook.com>
X-MS-Oob-TLC-OOBClassifiers: OLM:2043;
X-MS-Exchange-SenderADCheck: 1
X-Microsoft-Antispam: BCL:0;
X-Microsoft-Antispam-Message-Info: 877WMVI+UpSc8GoCYZf6qi1d1/wVZWvhV3x+yXQztes+Uur0dsWx+ndTUMoRqSM77uGxtWORGhXuwvIhoGStsIQzSacs4LBCB3JuUcfIdTcggkcCYflJVCsYEZHNRTT82jO1QOBcUM0hPeL3bhot5YFvLaUyevD+Wh56/AbZq9VdZGp+Vm0zt/YhqPPjqJf2Skm1OQBPKC1gbCY667/kvfEg8V/bNaW9mjWqwgiOmR1npf6MEmnpoP3zW8/TOtuvR768E/I1B1BukE0UHF+WJhxj1WjGvTQobey6gzmfpNdgln32TWE91wGs1UtA/O5XB6t16SEdoCxTvttTWr/e2wVfZZ+4NXmG2yRJmsXuhCKsGHxiFpFD6KnQPHWlQoAQDEVqBDwayPtGPO18kovZ+Q==
X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AM0PR05MB6002.eurprd05.prod.outlook.com;PTR:;CAT:NONE;SFS:(4636009)(396003)(346002)(136003)(366004)(39840400004)(376002)(55236004)(54906003)(2906002)(86362001)(66476007)(66556008)(66946007)(316002)(26005)(83380400001)(4326008)(8676002)(6486002)(16526019)(186003)(6506007)(6512007)(6666004)(1076003)(6916009)(52116002)(956004)(2616005)(44832011)(478600001)(36756003)(5660300002)(4744005)(8936002);DIR:OUT;SFP:1102;
X-MS-Exchange-AntiSpam-MessageData: =?us-ascii?Q?owtx3OeMpJQqN9fGSl8hUSjp2FBwo7IN9nRRGvQW+vy4AU0DoA5TPzfIBjxt?=
 =?us-ascii?Q?ZapHanRRQdWUS9f3Jj0czd6tAYaG2z5a28Jjq+f3SfRa7D/TbeHPdomn2/SF?=
 =?us-ascii?Q?UXr2Rzl4KTLziXw6vK07/Euus94zGFWyw52wO0FRBKETwpiVTcELnkrVnKOa?=
 =?us-ascii?Q?ziM06y3bVqLOiRQS5hYfHorK+q0TPGGVUh+wruImlNXC5QpiEG4tcJKqh/kS?=
 =?us-ascii?Q?vXRrp/QzTpEDWV5Zeg0MCROvZu1vIoiuUHhnwAO/MpHd8AduSubQdnaeg9Tx?=
 =?us-ascii?Q?3JInYIym9k0nzbJfKAl4Om3Qxn4MIsVl33xAwGCo+wC6bR2oP1Qh/+pXjjn7?=
 =?us-ascii?Q?v76GCUmkfQAm2gx9s3Gh/7/NgCBPpbXQk7ipGHoZoI0ZN/lI4Uzxo9GS5EVR?=
 =?us-ascii?Q?SlPawSI8NTvjlT99bIJ7wJFU5LxcDS5HCu2FNKf3O6SFyM9GhfKBUT5QVS02?=
 =?us-ascii?Q?p0S/kDAeJ0sI50BlZlGfLNYoA5ZweOjEoKKQlW0kbf0eJkQvc0+aJqulXm0n?=
 =?us-ascii?Q?pKtcO6b/d9MrUntyosET7GK3F75EdSLB+QFh5heyUnH/V1KxRHIgqy3hBToo?=
 =?us-ascii?Q?J2bj93J295AZf8Xs8JwbQkX6He1lpUVs/1Ec3U5f55f1Af/yu++9VhJhZHmq?=
 =?us-ascii?Q?dlAJ7P37qiNxOnXCmghw8hlFkuNESmqIXeWFzP2YGbTd3QgFLarip/KprFEF?=
 =?us-ascii?Q?p2B+FHflSP4G/z9zFE4GZH6yNjPWL63EperQVzKB1qFQ/EcpswnnfvQgYcVm?=
 =?us-ascii?Q?xUW3BD2DwBAzZcS7SSvzDyI1oBTltkyJlNylz4S1YU4otIA1PyJwQMqJG4W7?=
 =?us-ascii?Q?A9LdN9PJQLo2KAZzkLLz6ccbkAk2VYPmXNKvxZTs4bYqacv6b7GYrgePtlXl?=
 =?us-ascii?Q?ohFAqY59/hbmqumxLr4JFfxuPGo8KBlazAvbY//oeAX+h+Bzp9n+OhgVIxSu?=
 =?us-ascii?Q?hbWhphID4U4TlK5e3cpBwo6PKHf1e+eV360wAFSq7gfFY1hd225oMeuWrvbh?=
 =?us-ascii?Q?DsIf?=
X-OriginatorOrg: toradex.com
X-MS-Exchange-CrossTenant-AuthSource: AM0PR05MB6002.eurprd05.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Dec 2020 09:47:39.5996
 (UTC)
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-CrossTenant-Id: d9995866-0d9b-4251-8315-093f062abab4
X-MS-Exchange-CrossTenant-Network-Message-Id: 2d3f1cb5-b4e6-413d-23b6-08d8a983489a
X-MS-Exchange-CrossTenant-MailboxType: HOSTED
X-MS-Exchange-CrossTenant-UserPrincipalName: 1IQlIgguQpVbuaMVwwbYIYB6VdLj1hewng0eSsEgSfwo2N7/E8Z6LYVtte65Poeez0wwNsp6Fou4x//mW1IbkkMfMVX2PvNVqUVv0DLR9hc=
X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR05MB6001
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Add support of sub-functions disabling. It allows one to define
an stmpe sub-function device in devicetree, but keep it disabled.

Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
---

 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