From patchwork Tue Aug 6 08:48:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Utsav Agarwal via B4 Relay X-Patchwork-Id: 13754563 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6D5A01BD006; Tue, 6 Aug 2024 08:49:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722934168; cv=none; b=Nkvpi5OynQ+OfqpPzYnoDjfmvQaJzlAQysv729/5C2a9mX755rlUoE9uBseGqWNWTnrrhUW62pWb2fiEfNfqtKLKXAq6a29FBjzwQ8leH8fsLx3vRaNL8uNCAx5ElxDY63rbWs1k+CBgCpnvlZTtuFBK6xUIehds0r27smEtCbQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722934168; c=relaxed/simple; bh=aEuCjWxRkzWwfDTMdgU+LpngRSgkeUQ7WrIWnqmQ1+I=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=BuAm2mwgxIm04nnapHR5Dvv4/AQUbfIHDzV0ZQR2FNIGj+k0kwMNAvoQTXuqRI82ii6k9e8gqPpareW70Mxnv1ggteknojx93gi4nVYi1mR3xG+X3AFoAlUHucVHnsm5ym994JK9m+mzRJUELP3bcxbstyH6AnPRvsdVvqK3o1o= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=e/Hw7Cw6; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="e/Hw7Cw6" Received: by smtp.kernel.org (Postfix) with ESMTPS id 11404C4AF09; Tue, 6 Aug 2024 08:49:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722934168; bh=aEuCjWxRkzWwfDTMdgU+LpngRSgkeUQ7WrIWnqmQ1+I=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=e/Hw7Cw6s844/rEGJvUySv1Zqupiy12WP1QsgKY4mzftKHzAEW47tOddwUThQLBJW Samq+lJPXX8/qdrRzFAPLy9vjXMKiE5s3F/g7Sq43XyeBKk275OakkSxyXOQ8M3TUQ I76JrcsB7x7+TtRbngOxbZhi/l3CgcStzdFnF6VaA9r4lWZNWKnMzyiNxnecHV/pAi lT88pL46lpzLDKM2+CFJTYjy/LkQ82mvu8q4jaoUKPPP7+7muah/ErrOdnMGSu3Fxw iOOtM8MqjM3++I+QEYcYDkOfKsaHwTDQTaBy6EqabcM2K5Jy6ArXnIzRvGM07RWjoe 6uziRXNroZm+A== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id E9557C52D70; Tue, 6 Aug 2024 08:49:27 +0000 (UTC) From: Utsav Agarwal via B4 Relay Date: Tue, 06 Aug 2024 09:48:02 +0100 Subject: [PATCH v9 1/3] Input: adp5588-keys - use guard notation when acquiring mutexes Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240806-adp5588_gpio_support-v9-1-4d6118b6d653@analog.com> References: <20240806-adp5588_gpio_support-v9-0-4d6118b6d653@analog.com> In-Reply-To: <20240806-adp5588_gpio_support-v9-0-4d6118b6d653@analog.com> To: Utsav Agarwal , Michael Hennerich , Dmitry Torokhov , Rob Herring , Krzysztof Kozlowski , Conor Dooley , =?utf-8?q?Nuno_S=C3=A1?= Cc: linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Arturs Artamonovs , Vasileios Bimpikas , Oliver Gaskell X-Mailer: b4 0.14.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1722934106; l=4350; i=utsav.agarwal@analog.com; s=20240701; h=from:subject:message-id; bh=mDwNB6wUzoZc6JGCdhyWFTBkDbZltiAbjw3N6y6sDvU=; b=UNBidsq6/oHQn9kzLAo4fwEqmeEumu0eL5ADWjLJVIvoBLH4FLZnqUUeEJxGqaB8IMF9Eipji 6x3rZeExX0nBoxfbdE2BvGtfGPcBqX62Qf3mUCdD58Co0eBjj3yltDF X-Developer-Key: i=utsav.agarwal@analog.com; a=ed25519; pk=mIG5Dmd3TO5rcICwTsixl2MoUcf/i2u+jYqifd7+fmI= X-Endpoint-Received: by B4 Relay for utsav.agarwal@analog.com/20240701 with auth_id=178 X-Original-From: Utsav Agarwal Reply-To: utsav.agarwal@analog.com From: Dmitry Torokhov This makes the code more compact and error handling more robust. Signed-off-by: Dmitry Torokhov Acked-by: Michael Hennerich --- drivers/input/keyboard/adp5588-keys.c | 49 ++++++++++++----------------------- 1 file changed, 17 insertions(+), 32 deletions(-) diff --git a/drivers/input/keyboard/adp5588-keys.c b/drivers/input/keyboard/adp5588-keys.c index 1b0279393df4..09bcfc6b9408 100644 --- a/drivers/input/keyboard/adp5588-keys.c +++ b/drivers/input/keyboard/adp5588-keys.c @@ -221,15 +221,13 @@ static int adp5588_gpio_get_value(struct gpio_chip *chip, unsigned int off) unsigned int bit = ADP5588_BIT(kpad->gpiomap[off]); int val; - mutex_lock(&kpad->gpio_lock); + guard(mutex)(&kpad->gpio_lock); if (kpad->dir[bank] & bit) val = kpad->dat_out[bank]; else val = adp5588_read(kpad->client, GPIO_DAT_STAT1 + bank); - mutex_unlock(&kpad->gpio_lock); - return !!(val & bit); } @@ -240,7 +238,7 @@ static void adp5588_gpio_set_value(struct gpio_chip *chip, unsigned int bank = ADP5588_BANK(kpad->gpiomap[off]); unsigned int bit = ADP5588_BIT(kpad->gpiomap[off]); - mutex_lock(&kpad->gpio_lock); + guard(mutex)(&kpad->gpio_lock); if (val) kpad->dat_out[bank] |= bit; @@ -248,8 +246,6 @@ static void adp5588_gpio_set_value(struct gpio_chip *chip, kpad->dat_out[bank] &= ~bit; adp5588_write(kpad->client, GPIO_DAT_OUT1 + bank, kpad->dat_out[bank]); - - mutex_unlock(&kpad->gpio_lock); } static int adp5588_gpio_set_config(struct gpio_chip *chip, unsigned int off, @@ -259,7 +255,6 @@ static int adp5588_gpio_set_config(struct gpio_chip *chip, unsigned int off, unsigned int bank = ADP5588_BANK(kpad->gpiomap[off]); unsigned int bit = ADP5588_BIT(kpad->gpiomap[off]); bool pull_disable; - int ret; switch (pinconf_to_config_param(config)) { case PIN_CONFIG_BIAS_PULL_UP: @@ -272,19 +267,15 @@ static int adp5588_gpio_set_config(struct gpio_chip *chip, unsigned int off, return -ENOTSUPP; } - mutex_lock(&kpad->gpio_lock); + guard(mutex)(&kpad->gpio_lock); if (pull_disable) kpad->pull_dis[bank] |= bit; else kpad->pull_dis[bank] &= bit; - ret = adp5588_write(kpad->client, GPIO_PULL1 + bank, - kpad->pull_dis[bank]); - - mutex_unlock(&kpad->gpio_lock); - - return ret; + return adp5588_write(kpad->client, GPIO_PULL1 + bank, + kpad->pull_dis[bank]); } static int adp5588_gpio_direction_input(struct gpio_chip *chip, unsigned int off) @@ -292,16 +283,11 @@ static int adp5588_gpio_direction_input(struct gpio_chip *chip, unsigned int off struct adp5588_kpad *kpad = gpiochip_get_data(chip); unsigned int bank = ADP5588_BANK(kpad->gpiomap[off]); unsigned int bit = ADP5588_BIT(kpad->gpiomap[off]); - int ret; - mutex_lock(&kpad->gpio_lock); + guard(mutex)(&kpad->gpio_lock); kpad->dir[bank] &= ~bit; - ret = adp5588_write(kpad->client, GPIO_DIR1 + bank, kpad->dir[bank]); - - mutex_unlock(&kpad->gpio_lock); - - return ret; + return adp5588_write(kpad->client, GPIO_DIR1 + bank, kpad->dir[bank]); } static int adp5588_gpio_direction_output(struct gpio_chip *chip, @@ -310,9 +296,9 @@ static int adp5588_gpio_direction_output(struct gpio_chip *chip, struct adp5588_kpad *kpad = gpiochip_get_data(chip); unsigned int bank = ADP5588_BANK(kpad->gpiomap[off]); unsigned int bit = ADP5588_BIT(kpad->gpiomap[off]); - int ret; + int error; - mutex_lock(&kpad->gpio_lock); + guard(mutex)(&kpad->gpio_lock); kpad->dir[bank] |= bit; @@ -321,17 +307,16 @@ static int adp5588_gpio_direction_output(struct gpio_chip *chip, else kpad->dat_out[bank] &= ~bit; - ret = adp5588_write(kpad->client, GPIO_DAT_OUT1 + bank, - kpad->dat_out[bank]); - if (ret) - goto out_unlock; - - ret = adp5588_write(kpad->client, GPIO_DIR1 + bank, kpad->dir[bank]); + error = adp5588_write(kpad->client, GPIO_DAT_OUT1 + bank, + kpad->dat_out[bank]); + if (error) + return error; -out_unlock: - mutex_unlock(&kpad->gpio_lock); + error = adp5588_write(kpad->client, GPIO_DIR1 + bank, kpad->dir[bank]); + if (error) + return error; - return ret; + return 0; } static int adp5588_build_gpiomap(struct adp5588_kpad *kpad) From patchwork Tue Aug 6 08:48:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Utsav Agarwal via B4 Relay X-Patchwork-Id: 13754564 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7C5391BD01C; 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a=ed25519-sha256; t=1722934106; l=2712; i=utsav.agarwal@analog.com; s=20240701; h=from:subject:message-id; bh=88wNMy4rmPbRWjXCvkVchg8jmUobzR++Hoq2qUZYJ2A=; b=1+S2Hr9K/6dFgUx9GpkCE+toU+qhK21E3N34GIu2DthjEAZu8FZL62wLMiEkRlIKJuE3Ozo3C X/n3UihycIlBrZVDbEyuZ6qSd3C2xmA1vClvhpZU+VicTxf2luxSHS+ X-Developer-Key: i=utsav.agarwal@analog.com; a=ed25519; pk=mIG5Dmd3TO5rcICwTsixl2MoUcf/i2u+jYqifd7+fmI= X-Endpoint-Received: by B4 Relay for utsav.agarwal@analog.com/20240701 with auth_id=178 X-Original-From: Utsav Agarwal Reply-To: utsav.agarwal@analog.com From: Utsav Agarwal Keypad specific setup is relaxed if no keypad rows/columns are specified, enabling a purely gpio operation. Signed-off-by: Utsav Agarwal --- drivers/input/keyboard/adp5588-keys.c | 37 +++++++++++++++++++++++++++++++---- 1 file changed, 33 insertions(+), 4 deletions(-) diff --git a/drivers/input/keyboard/adp5588-keys.c b/drivers/input/keyboard/adp5588-keys.c index 09bcfc6b9408..7c32f8b69a3e 100644 --- a/drivers/input/keyboard/adp5588-keys.c +++ b/drivers/input/keyboard/adp5588-keys.c @@ -188,6 +188,7 @@ struct adp5588_kpad { u32 cols; u32 unlock_keys[2]; int nkeys_unlock; + bool gpio_only; unsigned short keycode[ADP5588_KEYMAPSIZE]; unsigned char gpiomap[ADP5588_MAXGPIO]; struct gpio_chip gc; @@ -431,10 +432,12 @@ static int adp5588_gpio_add(struct adp5588_kpad *kpad) kpad->gc.label = kpad->client->name; kpad->gc.owner = THIS_MODULE; - girq = &kpad->gc.irq; - gpio_irq_chip_set_chip(girq, &adp5588_irq_chip); - girq->handler = handle_bad_irq; - girq->threaded = true; + if (kpad->client->irq) { + girq = &kpad->gc.irq; + gpio_irq_chip_set_chip(girq, &adp5588_irq_chip); + girq->handler = handle_bad_irq; + girq->threaded = true; + } mutex_init(&kpad->gpio_lock); @@ -632,6 +635,21 @@ static int adp5588_fw_parse(struct adp5588_kpad *kpad) struct i2c_client *client = kpad->client; int ret, i; + /* + * Check if the device is to be operated purely in GPIO mode. To do + * so, check that no keypad rows or columns have been specified, + * since all GPINS should be configured as GPIO. + */ + ret = device_property_present(&client->dev, + "keypad,num-rows"); + ret |= device_property_present(&client->dev, + "keypad,num-columns"); + /* If purely GPIO, skip keypad setup */ + if (!ret) { + kpad->gpio_only = true; + return 0; + } + ret = matrix_keypad_parse_properties(&client->dev, &kpad->rows, &kpad->cols); if (ret) @@ -775,6 +793,11 @@ static int adp5588_probe(struct i2c_client *client) if (error) return error; + if (kpad->gpio_only && !client->irq) { + 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, @@ -785,6 +808,12 @@ static int adp5588_probe(struct i2c_client *client) return error; } + if (kpad->gpio_only) { + dev_info(&client->dev, "Rev.%d GPIO only, irq %d\n", + revid, client->irq); + return 0; + } + dev_info(&client->dev, "Rev.%d keypad, irq %d\n", revid, client->irq); return 0; } From patchwork Tue Aug 6 08:48:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Utsav Agarwal via B4 Relay X-Patchwork-Id: 13754566 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7E9431BD02E; Tue, 6 Aug 2024 08:49:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722934168; cv=none; b=CfIuz+vnXWODpQBipymdIyITyZWXFLqR94YpZ9h+VzZfnSnuTv+kA8b9Lbr1dFiaVXZsv9eULkp1dYUqk39qXJa03uMrHXwJ23OMC8d65VkBmX7sXBTMuncqxLzGDLLw+R0wNbqe+Q1qRJAoO5LDR+eQFg/4HXZ8WNzZiKvGKRw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722934168; c=relaxed/simple; bh=tJoJFGQ6IN0XztrjKcoZyFy8IrqvD4zzAblubbny+Ew=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=iKuZSizfGT6Icv+dLIsr+c2Wf7UrTqkocOahgVWSQV9Kds0G4ETg7KL9wd79G79xJKpd+hOu2lA7e9Kro09VgaVuBKSAabe9VN9RE7oj9ElprCK/Y4ak8Iq/nWdPmxfBlt5EBhieCsZ+SvlQFqhd9LlvhTkyZrWjA6gHurlos8o= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=rKONZjv7; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="rKONZjv7" Received: by smtp.kernel.org (Postfix) with ESMTPS id 2B5F7C4AF13; Tue, 6 Aug 2024 08:49:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722934168; bh=tJoJFGQ6IN0XztrjKcoZyFy8IrqvD4zzAblubbny+Ew=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=rKONZjv7/XPGBfVjmQBQT1aC+lQ5O6yiy/A1VO+S+Rxxb6U0AouGsRdvV9Olq4js5 WpGLN7ZgNJ8EzqAXtJZZWjGg183m+oNn9/9Ds/OiLSwPBGZpvBbhZgQNSxEmKEt9UM JnygT81oLgSyH4EuS4QsEfUvhbZRPV8DBWPfBMqmgqyZ+EswNp93eTQkcHVE3oEXi7 65LF+MSp5mGS94uECWoL4VrX8vu1XQtk/bhdm66ihpyCbzy5lJ01fnvkybm71UsTC2 +PVfR60hxr5A6oeHsfATMov4BrjWvy9kn0iLaDPw+51nu/LyeXTgoqFoOyhkIN/fIL BX7kWuc/91R6A== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1C353C52D74; Tue, 6 Aug 2024 08:49:28 +0000 (UTC) From: Utsav Agarwal via B4 Relay Date: Tue, 06 Aug 2024 09:48:04 +0100 Subject: [PATCH v9 3/3] dt-bindings: input: Update dtbinding for adp5588 Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240806-adp5588_gpio_support-v9-3-4d6118b6d653@analog.com> References: <20240806-adp5588_gpio_support-v9-0-4d6118b6d653@analog.com> In-Reply-To: <20240806-adp5588_gpio_support-v9-0-4d6118b6d653@analog.com> To: Utsav Agarwal , Michael Hennerich , Dmitry Torokhov , Rob Herring , Krzysztof Kozlowski , Conor Dooley , =?utf-8?q?Nuno_S=C3=A1?= Cc: linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Arturs Artamonovs , Vasileios Bimpikas , Oliver Gaskell X-Mailer: b4 0.14.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1722934106; l=2787; i=utsav.agarwal@analog.com; s=20240701; h=from:subject:message-id; bh=IDMT5Xee1oJ9GPx4m0/4wO3JYqcHE0m3oSwjk4wtz/Q=; b=1VJE7OxfyBh+HyB2sg8jCGAiaPX6IljGy32ThG2UCCSgwOUQ9DJdVWiS64yEjyUaQ1PN3ItWR M/7PbvE7P8bCWHc+iIrmLFeRpgnneDx3o+/vrid2ZPlKrw3sItod4ci X-Developer-Key: i=utsav.agarwal@analog.com; a=ed25519; pk=mIG5Dmd3TO5rcICwTsixl2MoUcf/i2u+jYqifd7+fmI= X-Endpoint-Received: by B4 Relay for utsav.agarwal@analog.com/20240701 with auth_id=178 X-Original-From: Utsav Agarwal Reply-To: utsav.agarwal@analog.com From: Utsav Agarwal Updating dt bindings for adp5588. Since the device can now function in a purely gpio mode, the following keypad specific properties are now made optional: - interrupts - keypad,num-rows - keypad,num-columns - linux,keymap However the above properties are required to be specified when configuring the device as a keypad, dependencies have been added such that specifying either one would require the remaining as well. Note that interrupts are optional, but required when the device has either been configured in keypad mode or as an interrupt controller. Signed-off-by: Utsav Agarwal --- .../devicetree/bindings/input/adi,adp5588.yaml | 51 +++++++++++++++++++--- 1 file changed, 45 insertions(+), 6 deletions(-) diff --git a/Documentation/devicetree/bindings/input/adi,adp5588.yaml b/Documentation/devicetree/bindings/input/adi,adp5588.yaml index 26ea66834ae2..827d72ece54b 100644 --- a/Documentation/devicetree/bindings/input/adi,adp5588.yaml +++ b/Documentation/devicetree/bindings/input/adi,adp5588.yaml @@ -49,7 +49,12 @@ properties: interrupt-controller: description: This property applies if either keypad,num-rows lower than 8 or - keypad,num-columns lower than 10. + keypad,num-columns lower than 10. This property is optional if + keypad,num-rows or keypad,num-columns are not specified since the + device then acts as gpio only, during which interrupts may or may + not be utilized. If specified however, interrupts must be also be + provided as all interrupt communication is handled via a single + interrupt line. '#interrupt-cells': const: 2 @@ -65,13 +70,30 @@ properties: minItems: 1 maxItems: 2 + +dependencies: + keypad,num-rows: + - linux,keymap + - keypad,num-columns + keypad,num-columns: + - linux,keymap + - keypad,num-rows + linux,keymap: + - keypad,num-rows + - keypad,num-columns + interrupt-controller: + - interrupts + +if: + required: + - linux,keymap +then: + required: + - interrupts + required: - compatible - reg - - interrupts - - keypad,num-rows - - keypad,num-columns - - linux,keymap unevaluatedProperties: false @@ -108,4 +130,21 @@ examples: >; }; }; -... + + - | + #include + #include + #include + i2c { + #address-cells = <1>; + #size-cells = <0>; + gpio@34 { + compatible = "adi,adp5588"; + reg = <0x34>; + + #gpio-cells = <2>; + gpio-controller; + }; + }; + +.