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Fri, 21 Jun 2024 10:44:12 +0000 Received: from SJ0PR03MB6343.namprd03.prod.outlook.com ([fe80::6744:a83a:ab:7e23]) by SJ0PR03MB6343.namprd03.prod.outlook.com ([fe80::6744:a83a:ab:7e23%2]) with mapi id 15.20.7677.026; Fri, 21 Jun 2024 10:44:12 +0000 From: "Agarwal, Utsav" To: "Hennerich, Michael" , "dmitry.torokhov@gmail.com" , "linux-input@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: "Artamonovs, Arturs" , "Bimpikas, Vasileios" Subject: [PATCH] adp5588-keys: Support for dedicated gpio operation Thread-Topic: [PATCH] adp5588-keys: Support for dedicated gpio operation Thread-Index: AdrDxwnnhsqWA3twQEu3gpPx2Qa+mA== Date: Fri, 21 Jun 2024 10:44:12 +0000 Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-dg-ref: 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 x-ms-publictraffictype: Email x-ms-traffictypediagnostic: SJ0PR03MB6343:EE_|CH4PR03MB7579:EE_ x-ms-office365-filtering-correlation-id: 58f224c1-eba0-4c2a-22a7-08dc91df16a6 x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; 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The current state of the driver for the ADP5588/87 only allows partial I/O to be used as GPIO. This support was present before as a separate gpio driver, which was dropped with the commit 5ddc896088b0 ("gpio: gpio-adp5588: drop the driver") since the functionality was deemed to have been merged with adp5588-keys. To restore this functionality, the "gpio-only" property allows indicating if the device is to be used for GPIO only. When specified, the driver skips relevant input device checks/parsing and allows all GPINS to be registered as GPIO. Signed-off-by: Utsav Agarwal --- drivers/input/keyboard/adp5588-keys.c | 30 ++++++++++++++++++++------- 1 file changed, 23 insertions(+), 7 deletions(-) diff --git a/drivers/input/keyboard/adp5588-keys.c b/drivers/input/keyboard/adp5588-keys.c index 1b0279393df4..78770b2dfe1b 100644 --- a/drivers/input/keyboard/adp5588-keys.c +++ b/drivers/input/keyboard/adp5588-keys.c @@ -719,7 +719,7 @@ static int adp5588_probe(struct i2c_client *client) struct input_dev *input; struct gpio_desc *gpio; unsigned int revid; - int ret; + int ret, gpio_mode_only; int error; if (!i2c_check_functionality(client->adapter, @@ -739,13 +739,17 @@ static int adp5588_probe(struct i2c_client *client) kpad->client = client; kpad->input = input; - error = adp5588_fw_parse(kpad); - if (error) - return error; + gpio_mode_only = device_property_present(&client->dev, "gpio-only"); + if (!gpio_mode_only) { + error = adp5588_fw_parse(kpad); + if (error) + return error; - error = devm_regulator_get_enable(&client->dev, "vcc"); - if (error) - return error; + error = devm_regulator_get_enable(&client->dev, "vcc"); + if (error) + return error; + + } gpio = devm_gpiod_get_optional(&client->dev, "reset", GPIOD_OUT_HIGH); if (IS_ERR(gpio)) @@ -790,6 +794,11 @@ static int adp5588_probe(struct i2c_client *client) if (error) return error; + if (!client->irq && gpio_mode_only) { + dev_info(&client->dev, "Rev.%d, started as GPIO only\n", revid); + return 0; + } + error = devm_request_threaded_irq(&client->dev, client->irq, adp5588_hard_irq, adp5588_thread_irq, IRQF_TRIGGER_FALLING | IRQF_ONESHOT, @@ -800,6 +809,13 @@ static int adp5588_probe(struct i2c_client *client) return error; } + + if (gpio_mode_only) { + dev_info(&client->dev, "Rev.%d irq %d, started as GPIO only\n", + revid, client->irq); + return 0; + } + dev_info(&client->dev, "Rev.%d keypad, irq %d\n", revid, client->irq); return 0; }