From patchwork Thu May 22 12:06:17 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Dubois-Briand X-Patchwork-Id: 891795 Received: from relay3-d.mail.gandi.net (relay3-d.mail.gandi.net [217.70.183.195]) (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 21608289E35; Thu, 22 May 2025 12:06:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747915609; cv=none; b=uMVDZoSdblotiD+UI5jvZ0VVBFb4g2hPMfffzmbhKSG2qx1Ov3wSuXNTx2kSVJYHG5XvWNmhekqh3aGwfMlUIv1KDlSEZnN2Ll6rZrMjnx+FOvtofgUbzbfJs8NcvN+LH7nlZi0AhzRPKizsNyuE/h/X5BMa7WQZTbSugEYuEzI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747915609; c=relaxed/simple; bh=+akmWLW9op4JgcAuyMt43ym335BurNgd31VfijKCylU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=cf08Ra5GyYpnQ7mRgjTjd0iDPVHs3eWFioIpn/kPqk/xd4U1ukefzBwis3pT94rBM23poeVagWontWUaBDrFJl28kxKDpGOuZ+7QQfqzgUlG5LYrdiAnQnL/1S60N9fg+91VQqUvqgmRYiPXIEVOByv6akMEXIqFxngCX6qqLTc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=WAaSN1K5; arc=none smtp.client-ip=217.70.183.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="WAaSN1K5" Received: by mail.gandi.net (Postfix) with ESMTPSA id 8BD761FCF3; Thu, 22 May 2025 12:06:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1747915605; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Ez+JrwG7KQaKCryUKW2Ux1EEekY5LyIMC3ab9jmtyTA=; b=WAaSN1K5avokAdNhiKr2y088bxS679O/CyuptTMkNsAr6hs4ZnTuUKwWFKkqE4g+Hu7drX MsWMxdhCdyOruYyvvCk+Qo6Sk6x9IsXIxp3r+YoX569/zj1ldSSjFnvszt++yxyAqy6DBX PWELSF7V4aozhkdj0a5mcQo8ZRA4VVP3m+KmXAt6eJaFqQmS6SGrSjBrfYAwDDlYACD5Lh X4Rt8EkMTi3TGUy2Hj1cHyeN2k/wAjSeHwakByhd79mhrWgUj4kH5x+8e95Ik29X/JD01N uEY99z4gNuv1ZRn0O2hxcFlspM36CiKVGO9HrQnxrMIJT9lnjlHfd+0jaq/8sQ== From: mathieu.dubois-briand@bootlin.com Date: Thu, 22 May 2025 14:06:17 +0200 Subject: [PATCH v9 02/11] mfd: Add max7360 support Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250522-mdb-max7360-support-v9-2-74fc03517e41@bootlin.com> References: <20250522-mdb-max7360-support-v9-0-74fc03517e41@bootlin.com> In-Reply-To: <20250522-mdb-max7360-support-v9-0-74fc03517e41@bootlin.com> To: Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kamel Bouhara , Linus Walleij , Bartosz Golaszewski , Dmitry Torokhov , =?utf-8?q?Uwe_Kleine-K=C3=B6n?= =?utf-8?q?ig?= , Michael Walle , Mark Brown , Greg Kroah-Hartman , "Rafael J. Wysocki" , Danilo Krummrich Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-input@vger.kernel.org, linux-pwm@vger.kernel.org, andriy.shevchenko@intel.com, =?utf-8?q?Gr=C3=A9?= =?utf-8?q?gory_Clement?= , Thomas Petazzoni , Mathieu Dubois-Briand X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=ed25519-sha256; t=1747915601; l=10501; i=mathieu.dubois-briand@bootlin.com; s=20241219; h=from:subject:message-id; bh=GIupl4p/k0jiBxoYEh+9yxR2yubWSq+A0Aa6KSuoV/k=; b=IVTj5lraF9IyTaPG2KMn+7lucdNtOzEkrHWWQ9RfD4/B3n1yUMOHWG/FzPyQHkHsEmf45k9I7 i6BhEyzBGgJDMtV9Vg4fQhnj/r6vGfoLyLV05kEC33/0MXTKOo0V3lV X-Developer-Key: i=mathieu.dubois-briand@bootlin.com; a=ed25519; pk=1PVTmzPXfKvDwcPUzG0aqdGoKZJA3b9s+3DqRlm0Lww= X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeeffedrtddtgdehleduucdltddurdegfedvrddttddmucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhfffugggtgffkfhgjvfevofesthejredtredtjeenucfhrhhomhepmhgrthhhihgvuhdrughusghoihhsqdgsrhhirghnugessghoohhtlhhinhdrtghomhenucggtffrrghtthgvrhhnpeevheffteettefffeetvdelledttddthfevhffgleehfedvveduudfhhedugfelgeenucfkphepvdgrtddumegtsgdugeemheehieemjegrtddtmeeffhgtfhemfhgstdgumeduvdeivdemvdgvjeeinecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepvdgrtddumegtsgdugeemheehieemjegrtddtmeeffhgtfhemfhgstdgumeduvdeivdemvdgvjeeipdhhvghloheplgduvdejrddtrddurddungdpmhgrihhlfhhrohhmpehmrghthhhivghurdguuhgsohhishdqsghrihgrnhgusegsohhothhlihhnrdgtohhmpdhnsggprhgtphhtthhopedvfedprhgtphhtthhopegurghkrheskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhushdrfigrlhhlvghijheslhhinhgrrhhordhorhhgpdhrtghpthhtohepsghrohhonhhivgeskhgvrhhnvghlrdhorhhgpdhrtghpthhto hepmhgrthhhihgvuhdrughusghoihhsqdgsrhhirghnugessghoohhtlhhinhdrtghomhdprhgtphhtthhopehthhhomhgrshdrphgvthgriiiiohhnihessghoohhtlhhinhdrtghomhdprhgtphhtthhopegsrhhglhessghguggvvhdrphhlpdhrtghpthhtohepughmihhtrhihrdhtohhrohhkhhhovhesghhmrghilhdrtghomhdprhgtphhtthhopeguvghvihgtvghtrhgvvgesvhhgvghrrdhkvghrnhgvlhdrohhrgh X-GND-Sasl: mathieu.dubois-briand@bootlin.com From: Kamel Bouhara Add core driver to support MAX7360 i2c chip, multi function device with keypad, GPIO, PWM, GPO and rotary encoder submodules. Signed-off-by: Kamel Bouhara Co-developed-by: Mathieu Dubois-Briand Signed-off-by: Mathieu Dubois-Briand --- drivers/mfd/Kconfig | 14 ++++ drivers/mfd/Makefile | 1 + drivers/mfd/max7360.c | 171 ++++++++++++++++++++++++++++++++++++++++++++ include/linux/mfd/max7360.h | 109 ++++++++++++++++++++++++++++ 4 files changed, 295 insertions(+) diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 22b936310039..c2998c6ce54c 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -2422,5 +2422,19 @@ config MFD_UPBOARD_FPGA To compile this driver as a module, choose M here: the module will be called upboard-fpga. +config MFD_MAX7360 + tristate "Maxim MAX7360 I2C IO Expander" + depends on I2C + select MFD_CORE + select REGMAP_I2C + select REGMAP_IRQ + help + Say yes here to add support for Maxim MAX7360 device, embedding + keypad, rotary encoder, PWM and GPIO features. + + This driver provides common support for accessing the device; + additional drivers must be enabled in order to use the functionality + of the device. + endmenu endif diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 948cbdf42a18..add9ff58eb25 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -162,6 +162,7 @@ obj-$(CONFIG_MFD_DA9063) += da9063.o obj-$(CONFIG_MFD_DA9150) += da9150-core.o obj-$(CONFIG_MFD_MAX14577) += max14577.o +obj-$(CONFIG_MFD_MAX7360) += max7360.o obj-$(CONFIG_MFD_MAX77541) += max77541.o obj-$(CONFIG_MFD_MAX77620) += max77620.o obj-$(CONFIG_MFD_MAX77650) += max77650.o diff --git a/drivers/mfd/max7360.c b/drivers/mfd/max7360.c new file mode 100644 index 000000000000..5ee459c490ec --- /dev/null +++ b/drivers/mfd/max7360.c @@ -0,0 +1,171 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Maxim MAX7360 Core Driver + * + * Copyright 2025 Bootlin + * + * Authors: + * Kamel Bouhara + * Mathieu Dubois-Briand + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static const struct mfd_cell max7360_cells[] = { + { .name = "max7360-pinctrl" }, + { .name = "max7360-pwm" }, + { .name = "max7360-keypad" }, + { .name = "max7360-rotary" }, + { + .name = "max7360-gpo", + .of_compatible = "maxim,max7360-gpo", + }, + { + .name = "max7360-gpio", + .of_compatible = "maxim,max7360-gpio", + }, +}; + +static const struct regmap_range max7360_volatile_ranges[] = { + regmap_reg_range(MAX7360_REG_KEYFIFO, MAX7360_REG_KEYFIFO), + regmap_reg_range(MAX7360_REG_I2C_TIMEOUT, MAX7360_REG_RTR_CNT), +}; + +static const struct regmap_access_table max7360_volatile_table = { + .yes_ranges = max7360_volatile_ranges, + .n_yes_ranges = ARRAY_SIZE(max7360_volatile_ranges), +}; + +static const struct regmap_config max7360_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = MAX7360_REG_PWMCFG(MAX7360_PORT_PWM_COUNT - 1), + .volatile_table = &max7360_volatile_table, + .cache_type = REGCACHE_MAPLE, +}; + +static int max7360_mask_irqs(struct regmap *regmap) +{ + struct device *dev = regmap_get_device(regmap); + unsigned int val; + int ret; + + /* + * GPIO/PWM interrupts are not masked on reset: as the MAX7360 "INTI" + * interrupt line is shared between GPIOs and rotary encoder, this could + * result in repeated spurious interrupts on the rotary encoder driver + * if the GPIO driver is not loaded. Mask them now to avoid this + * situation. + */ + for (unsigned int i = 0; i < MAX7360_PORT_PWM_COUNT; i++) { + ret = regmap_write_bits(regmap, MAX7360_REG_PWMCFG(i), + MAX7360_PORT_CFG_INTERRUPT_MASK, + MAX7360_PORT_CFG_INTERRUPT_MASK); + if (ret) + return dev_err_probe(dev, ret, + "Failed to write MAX7360 port configuration\n"); + } + + /* Read GPIO in register, to ACK any pending IRQ. */ + ret = regmap_read(regmap, MAX7360_REG_GPIOIN, &val); + if (ret) + return dev_err_probe(dev, ret, "Failed to read GPIO values\n"); + + return 0; +} + +static int max7360_reset(struct regmap *regmap) +{ + struct device *dev = regmap_get_device(regmap); + int ret; + + ret = regmap_write(regmap, MAX7360_REG_GPIOCFG, MAX7360_GPIO_CFG_GPIO_RST); + if (ret) { + dev_err(dev, "Failed to reset GPIO configuration: %x\n", ret); + return ret; + } + + ret = regcache_drop_region(regmap, MAX7360_REG_GPIOCFG, MAX7360_REG_GPIO_LAST); + if (ret) { + dev_err(dev, "Failed to drop regmap cache: %x\n", ret); + return ret; + } + + ret = regmap_write(regmap, MAX7360_REG_SLEEP, 0); + if (ret) { + dev_err(dev, "Failed to reset autosleep configuration: %x\n", ret); + return ret; + } + + ret = regmap_write(regmap, MAX7360_REG_DEBOUNCE, 0); + if (ret) + dev_err(dev, "Failed to reset GPO port count: %x\n", ret); + + return ret; +} + +static int max7360_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct regmap *regmap; + int ret; + + regmap = devm_regmap_init_i2c(client, &max7360_regmap_config); + if (IS_ERR(regmap)) + return dev_err_probe(dev, PTR_ERR(regmap), "Failed to initialise regmap\n"); + + ret = max7360_reset(regmap); + if (ret) + return dev_err_probe(dev, ret, "Failed to reset device\n"); + + /* Get the device out of shutdown mode. */ + ret = regmap_write_bits(regmap, MAX7360_REG_GPIOCFG, + MAX7360_GPIO_CFG_GPIO_EN, + MAX7360_GPIO_CFG_GPIO_EN); + if (ret) + return dev_err_probe(dev, ret, "Failed to enable GPIO and PWM module\n"); + + ret = max7360_mask_irqs(regmap); + if (ret) + return dev_err_probe(dev, ret, "Could not mask interrupts\n"); + + ret = devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE, + max7360_cells, ARRAY_SIZE(max7360_cells), + NULL, 0, NULL); + if (ret) + return dev_err_probe(dev, ret, "Failed to register child devices\n"); + + return 0; +} + +static const struct of_device_id max7360_dt_match[] = { + { .compatible = "maxim,max7360" }, + {} +}; +MODULE_DEVICE_TABLE(of, max7360_dt_match); + +static struct i2c_driver max7360_driver = { + .driver = { + .name = "max7360", + .of_match_table = max7360_dt_match, + }, + .probe = max7360_probe, +}; +module_i2c_driver(max7360_driver); + +MODULE_DESCRIPTION("Maxim MAX7360 I2C IO Expander core driver"); +MODULE_AUTHOR("Kamel Bouhara "); +MODULE_LICENSE("GPL"); diff --git a/include/linux/mfd/max7360.h b/include/linux/mfd/max7360.h new file mode 100644 index 000000000000..44cf2bf651a2 --- /dev/null +++ b/include/linux/mfd/max7360.h @@ -0,0 +1,109 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef __LINUX_MFD_MAX7360_H +#define __LINUX_MFD_MAX7360_H + +#include + +#define MAX7360_MAX_KEY_ROWS 8 +#define MAX7360_MAX_KEY_COLS 8 +#define MAX7360_MAX_KEY_NUM (MAX7360_MAX_KEY_ROWS * MAX7360_MAX_KEY_COLS) +#define MAX7360_ROW_SHIFT 3 + +#define MAX7360_MAX_GPIO 8 +#define MAX7360_MAX_GPO 6 +#define MAX7360_PORT_PWM_COUNT 8 +#define MAX7360_PORT_RTR_PIN (MAX7360_PORT_PWM_COUNT - 1) + +/* + * MAX7360 registers + */ +#define MAX7360_REG_KEYFIFO 0x00 +#define MAX7360_REG_CONFIG 0x01 +#define MAX7360_REG_DEBOUNCE 0x02 +#define MAX7360_REG_INTERRUPT 0x03 +#define MAX7360_REG_PORTS 0x04 +#define MAX7360_REG_KEYREP 0x05 +#define MAX7360_REG_SLEEP 0x06 + +/* + * MAX7360 GPIO registers + * + * All these registers are reset together when writing bit 3 of + * MAX7360_REG_GPIOCFG. + */ +#define MAX7360_REG_GPIOCFG 0x40 +#define MAX7360_REG_GPIOCTRL 0x41 +#define MAX7360_REG_GPIODEB 0x42 +#define MAX7360_REG_GPIOCURR 0x43 +#define MAX7360_REG_GPIOOUTM 0x44 +#define MAX7360_REG_PWMCOM 0x45 +#define MAX7360_REG_RTRCFG 0x46 +#define MAX7360_REG_I2C_TIMEOUT 0x48 +#define MAX7360_REG_GPIOIN 0x49 +#define MAX7360_REG_RTR_CNT 0x4A +#define MAX7360_REG_PWMBASE 0x50 +#define MAX7360_REG_PWMCFGBASE 0x58 + +#define MAX7360_REG_GPIO_LAST 0x5F + +#define MAX7360_REG_PWM(x) (MAX7360_REG_PWMBASE + (x)) +#define MAX7360_REG_PWMCFG(x) (MAX7360_REG_PWMCFGBASE + (x)) + +/* + * Configuration register bits + */ +#define MAX7360_FIFO_EMPTY 0x3F +#define MAX7360_FIFO_OVERFLOW 0x7F +#define MAX7360_FIFO_RELEASE BIT(6) +#define MAX7360_FIFO_COL GENMASK(5, 3) +#define MAX7360_FIFO_ROW GENMASK(2, 0) + +#define MAX7360_CFG_SLEEP BIT(7) +#define MAX7360_CFG_INTERRUPT BIT(5) +#define MAX7360_CFG_KEY_RELEASE BIT(3) +#define MAX7360_CFG_WAKEUP BIT(1) +#define MAX7360_CFG_TIMEOUT BIT(0) + +#define MAX7360_DEBOUNCE GENMASK(4, 0) +#define MAX7360_DEBOUNCE_MIN 9 +#define MAX7360_DEBOUNCE_MAX 40 +#define MAX7360_PORTS GENMASK(8, 5) + +#define MAX7360_INTERRUPT_TIME_MASK GENMASK(4, 0) +#define MAX7360_INTERRUPT_FIFO_MASK GENMASK(7, 5) + +#define MAX7360_PORT_CFG_INTERRUPT_MASK BIT(7) +#define MAX7360_PORT_CFG_INTERRUPT_EDGES BIT(6) +#define MAX7360_PORT_CFG_COMMON_PWM BIT(5) + +/* + * Autosleep register values + */ +#define MAX7360_AUTOSLEEP_8192MS 0x01 +#define MAX7360_AUTOSLEEP_4096MS 0x02 +#define MAX7360_AUTOSLEEP_2048MS 0x03 +#define MAX7360_AUTOSLEEP_1024MS 0x04 +#define MAX7360_AUTOSLEEP_512MS 0x05 +#define MAX7360_AUTOSLEEP_256MS 0x06 + +#define MAX7360_GPIO_CFG_RTR_EN BIT(7) +#define MAX7360_GPIO_CFG_GPIO_EN BIT(4) +#define MAX7360_GPIO_CFG_GPIO_RST BIT(3) + +#define MAX7360_ROT_DEBOUNCE GENMASK(3, 0) +#define MAX7360_ROT_DEBOUNCE_MIN 0 +#define MAX7360_ROT_DEBOUNCE_MAX 15 +#define MAX7360_ROT_INTCNT GENMASK(6, 4) +#define MAX7360_ROT_INTCNT_DLY BIT(7) + +#define MAX7360_INT_INTI 0 +#define MAX7360_INT_INTK 1 + +#define MAX7360_INT_GPIO 0 +#define MAX7360_INT_KEYPAD 1 +#define MAX7360_INT_ROTARY 2 + +#define MAX7360_NR_INTERNAL_IRQS 3 + +#endif From patchwork Thu May 22 12:06:18 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Dubois-Briand X-Patchwork-Id: 891794 Received: from relay3-d.mail.gandi.net (relay3-d.mail.gandi.net [217.70.183.195]) (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 3F55728A1D3; Thu, 22 May 2025 12:06:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747915610; cv=none; b=Jnn6P6BSo8WGIwqZ3vwsGZttOPLhQEsoaYUSlV6NzV4x+t0mgb3NWfGqcOVNI5nmeszRiiXPr6HqSK+ue0k01DGSmt/vwt6ZtWTo4ouNgd5Ng1pGSOXpbs3ul6OgzG8JDr8aCeHkHJXCd49rv7OYgAsc8KSWpF9oT5mPFWZIZL4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747915610; c=relaxed/simple; bh=hGsZR55OfihDnF2tEvh7g9JNQPSI7GKyZaRHC0o8rL8=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; 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bh=viK3vhxx5RipA5TXaiZo7ax6KLs4M4zWzP2KGresXnI=; b=Qvk/OHgifgMBmKg7yKpP/i0tFb3joWP7Y3339ROIS/hFvj7U2JFZMgmn9h/ZLtLE3CeMPI LbDDSMpoTtt3N1EUNcobdUoZ4ZB2o1ZiHQ03BmhQBmpw45uOwVhU609Rdp7ylfjx8C934Z gT5QmC29tqMCTIDudbQTmoZbC4ZkA4HrRCxzInEzc2N6+tMGovcFHIyXxNNhrqgEgkcsw6 I+TfSJpCYo7MBz5/Ofya97P0q9BM033ICFUWRIOBZVKy+4XtpEXbfBFxnNgd+HbyLXgTZz 8fAHc41DV2zClJjMn7gGlUKFpG/Z7ahiQIl/dWa+7Ln6nhYMkE+3yNCs/tHfwQ== From: Mathieu Dubois-Briand Date: Thu, 22 May 2025 14:06:18 +0200 Subject: [PATCH v9 03/11] pinctrl: Add MAX7360 pinctrl driver Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250522-mdb-max7360-support-v9-3-74fc03517e41@bootlin.com> References: <20250522-mdb-max7360-support-v9-0-74fc03517e41@bootlin.com> In-Reply-To: <20250522-mdb-max7360-support-v9-0-74fc03517e41@bootlin.com> To: Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kamel Bouhara , Linus Walleij , Bartosz Golaszewski , Dmitry Torokhov , =?utf-8?q?Uwe_Kleine-K=C3=B6n?= =?utf-8?q?ig?= , Michael Walle , Mark Brown , Greg Kroah-Hartman , "Rafael J. Wysocki" , Danilo Krummrich Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-input@vger.kernel.org, linux-pwm@vger.kernel.org, andriy.shevchenko@intel.com, =?utf-8?q?Gr=C3=A9?= =?utf-8?q?gory_Clement?= , Thomas Petazzoni , Mathieu Dubois-Briand , Andy Shevchenko X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=ed25519-sha256; t=1747915601; l=9011; i=mathieu.dubois-briand@bootlin.com; s=20241219; h=from:subject:message-id; bh=hGsZR55OfihDnF2tEvh7g9JNQPSI7GKyZaRHC0o8rL8=; b=YQDzhhzIx7aLfmLQ1qDf2Vf+zN4QVXuh3fM0pxRChPM9bM6uBypHFVwSvVEWl5syQhZ0fuKLy ZawRLnvwO49A1qtJJGpwyboCNCYUCIdg0WoaXS47SLdqtVbtNO82C1e X-Developer-Key: i=mathieu.dubois-briand@bootlin.com; a=ed25519; pk=1PVTmzPXfKvDwcPUzG0aqdGoKZJA3b9s+3DqRlm0Lww= X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeeffedrtddtgdehleduucdltddurdegfedvrddttddmucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhfffugggtgffkfhgjvfevofesthejredtredtjeenucfhrhhomhepofgrthhhihgvuhcuffhusghoihhsqdeurhhirghnugcuoehmrghthhhivghurdguuhgsohhishdqsghrihgrnhgusegsohhothhlihhnrdgtohhmqeenucggtffrrghtthgvrhhnpedthfegtedvvdehjeeiheehheeuteejleektdefheehgfefgeelhfetgedttdfhteenucfkphepvdgrtddumegtsgdugeemheehieemjegrtddtmeeffhgtfhemfhgstdgumeduvdeivdemvdgvjeeinecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepvdgrtddumegtsgdugeemheehieemjegrtddtmeeffhgtfhemfhgstdgumeduvdeivdemvdgvjeeipdhhvghloheplgduvdejrddtrddurddungdpmhgrihhlfhhrohhmpehmrghthhhivghurdguuhgsohhishdqsghrihgrnhgusegsohhothhlihhnrdgtohhmpdhnsggprhgtphhtthhopedvgedprhgtphhtthhopegurghkrheskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhushdrfigrlhhlvghijheslhhinhgrrhhordhorhhgpdhrtghpthhtoheps ghrohhonhhivgeskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheprghnughrihihrdhshhgvvhgthhgvnhhkoheslhhinhhugidrihhnthgvlhdrtghomhdprhgtphhtthhopehmrghthhhivghurdguuhgsohhishdqsghrihgrnhgusegsohhothhlihhnrdgtohhmpdhrtghpthhtohepthhhohhmrghsrdhpvghtrgiiiihonhhisegsohhothhlihhnrdgtohhmpdhrtghpthhtohepsghrghhlsegsghguvghvrdhplhdprhgtphhtthhopegumhhithhrhidrthhorhhokhhhohhvsehgmhgrihhlrdgtohhm X-GND-Sasl: mathieu.dubois-briand@bootlin.com Add driver for Maxim Integrated MAX7360 pinctrl on the PORT pins. Pins can be used either for GPIO, PWM or rotary encoder functionalities. Signed-off-by: Mathieu Dubois-Briand Reviewed-by: Linus Walleij Reviewed-by: Andy Shevchenko --- drivers/pinctrl/Kconfig | 11 ++ drivers/pinctrl/Makefile | 1 + drivers/pinctrl/pinctrl-max7360.c | 215 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 227 insertions(+) diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index 464cc9aca157..276695c7a92e 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -348,6 +348,17 @@ config PINCTRL_LPC18XX help Pinctrl driver for NXP LPC18xx/43xx System Control Unit (SCU). +config PINCTRL_MAX7360 + tristate "MAX7360 Pincontrol support" + depends on MFD_MAX7360 + select PINMUX + select GENERIC_PINCONF + help + Say Y here to enable pin control support for Maxim MAX7360 keypad + controller. + This keypad controller has 8 GPIO pins that may work as GPIO, or PWM, + or rotary encoder alternate modes. + config PINCTRL_MAX77620 tristate "MAX77620/MAX20024 Pincontrol support" depends on MFD_MAX77620 && OF diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile index ac27e88677d1..974a179b5593 100644 --- a/drivers/pinctrl/Makefile +++ b/drivers/pinctrl/Makefile @@ -36,6 +36,7 @@ obj-$(CONFIG_PINCTRL_FALCON) += pinctrl-falcon.o obj-$(CONFIG_PINCTRL_LOONGSON2) += pinctrl-loongson2.o obj-$(CONFIG_PINCTRL_XWAY) += pinctrl-xway.o obj-$(CONFIG_PINCTRL_LPC18XX) += pinctrl-lpc18xx.o +obj-$(CONFIG_PINCTRL_MAX7360) += pinctrl-max7360.o obj-$(CONFIG_PINCTRL_MAX77620) += pinctrl-max77620.o obj-$(CONFIG_PINCTRL_MCP23S08_I2C) += pinctrl-mcp23s08_i2c.o obj-$(CONFIG_PINCTRL_MCP23S08_SPI) += pinctrl-mcp23s08_spi.o diff --git a/drivers/pinctrl/pinctrl-max7360.c b/drivers/pinctrl/pinctrl-max7360.c new file mode 100644 index 000000000000..abfaff468bad --- /dev/null +++ b/drivers/pinctrl/pinctrl-max7360.c @@ -0,0 +1,215 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright 2025 Bootlin + * + * Author: Mathieu Dubois-Briand + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include "core.h" +#include "pinmux.h" + +struct max7360_pinctrl { + struct pinctrl_dev *pctldev; + struct pinctrl_desc pinctrl_desc; +}; + +static const struct pinctrl_pin_desc max7360_pins[] = { + PINCTRL_PIN(0, "PORT0"), + PINCTRL_PIN(1, "PORT1"), + PINCTRL_PIN(2, "PORT2"), + PINCTRL_PIN(3, "PORT3"), + PINCTRL_PIN(4, "PORT4"), + PINCTRL_PIN(5, "PORT5"), + PINCTRL_PIN(6, "PORT6"), + PINCTRL_PIN(7, "PORT7"), +}; + +static const unsigned int port0_pins[] = {0}; +static const unsigned int port1_pins[] = {1}; +static const unsigned int port2_pins[] = {2}; +static const unsigned int port3_pins[] = {3}; +static const unsigned int port4_pins[] = {4}; +static const unsigned int port5_pins[] = {5}; +static const unsigned int port6_pins[] = {6}; +static const unsigned int port7_pins[] = {7}; +static const unsigned int rotary_pins[] = {6, 7}; + +static const struct pingroup max7360_groups[] = { + PINCTRL_PINGROUP("PORT0", port0_pins, ARRAY_SIZE(port0_pins)), + PINCTRL_PINGROUP("PORT1", port1_pins, ARRAY_SIZE(port1_pins)), + PINCTRL_PINGROUP("PORT2", port2_pins, ARRAY_SIZE(port2_pins)), + PINCTRL_PINGROUP("PORT3", port3_pins, ARRAY_SIZE(port3_pins)), + PINCTRL_PINGROUP("PORT4", port4_pins, ARRAY_SIZE(port4_pins)), + PINCTRL_PINGROUP("PORT5", port5_pins, ARRAY_SIZE(port5_pins)), + PINCTRL_PINGROUP("PORT6", port6_pins, ARRAY_SIZE(port6_pins)), + PINCTRL_PINGROUP("PORT7", port7_pins, ARRAY_SIZE(port7_pins)), + PINCTRL_PINGROUP("ROTARY", rotary_pins, ARRAY_SIZE(rotary_pins)), +}; + +static int max7360_pinctrl_get_groups_count(struct pinctrl_dev *pctldev) +{ + return ARRAY_SIZE(max7360_groups); +} + +static const char *max7360_pinctrl_get_group_name(struct pinctrl_dev *pctldev, + unsigned int group) +{ + return max7360_groups[group].name; +} + +static int max7360_pinctrl_get_group_pins(struct pinctrl_dev *pctldev, + unsigned int group, + const unsigned int **pins, + unsigned int *num_pins) +{ + *pins = max7360_groups[group].pins; + *num_pins = max7360_groups[group].npins; + return 0; +} + +static const struct pinctrl_ops max7360_pinctrl_ops = { + .get_groups_count = max7360_pinctrl_get_groups_count, + .get_group_name = max7360_pinctrl_get_group_name, + .get_group_pins = max7360_pinctrl_get_group_pins, +#ifdef CONFIG_OF + .dt_node_to_map = pinconf_generic_dt_node_to_map_pin, + .dt_free_map = pinconf_generic_dt_free_map, +#endif +}; + +static const char * const simple_groups[] = { + "PORT0", "PORT1", "PORT2", "PORT3", + "PORT4", "PORT5", "PORT6", "PORT7", +}; + +static const char * const rotary_groups[] = { "ROTARY" }; + +#define MAX7360_PINCTRL_FN_GPIO 0 +#define MAX7360_PINCTRL_FN_PWM 1 +#define MAX7360_PINCTRL_FN_ROTARY 2 +static const struct pinfunction max7360_functions[] = { + [MAX7360_PINCTRL_FN_GPIO] = PINCTRL_PINFUNCTION("gpio", simple_groups, + ARRAY_SIZE(simple_groups)), + [MAX7360_PINCTRL_FN_PWM] = PINCTRL_PINFUNCTION("pwm", simple_groups, + ARRAY_SIZE(simple_groups)), + [MAX7360_PINCTRL_FN_ROTARY] = PINCTRL_PINFUNCTION("rotary", rotary_groups, + ARRAY_SIZE(rotary_groups)), +}; + +static int max7360_get_functions_count(struct pinctrl_dev *pctldev) +{ + return ARRAY_SIZE(max7360_functions); +} + +static const char *max7360_get_function_name(struct pinctrl_dev *pctldev, unsigned int selector) +{ + return max7360_functions[selector].name; +} + +static int max7360_get_function_groups(struct pinctrl_dev *pctldev, unsigned int selector, + const char * const **groups, + unsigned int * const num_groups) +{ + *groups = max7360_functions[selector].groups; + *num_groups = max7360_functions[selector].ngroups; + + return 0; +} + +static int max7360_set_mux(struct pinctrl_dev *pctldev, unsigned int selector, + unsigned int group) +{ + struct regmap *regmap = dev_get_regmap(pctldev->dev->parent, NULL); + int val; + + /* + * GPIO and PWM functions are the same: we only need to handle the + * rotary encoder function, on pins 6 and 7. + */ + if (max7360_groups[group].pins[0] >= 6) { + if (selector == MAX7360_PINCTRL_FN_ROTARY) + val = MAX7360_GPIO_CFG_RTR_EN; + else + val = 0; + + return regmap_write_bits(regmap, MAX7360_REG_GPIOCFG, MAX7360_GPIO_CFG_RTR_EN, val); + } + + return 0; +} + +static const struct pinmux_ops max7360_pmxops = { + .get_functions_count = max7360_get_functions_count, + .get_function_name = max7360_get_function_name, + .get_function_groups = max7360_get_function_groups, + .set_mux = max7360_set_mux, + .strict = true, +}; + +static int max7360_pinctrl_probe(struct platform_device *pdev) +{ + struct regmap *regmap; + struct pinctrl_desc *pd; + struct max7360_pinctrl *chip; + struct device *dev = &pdev->dev; + + regmap = dev_get_regmap(dev->parent, NULL); + if (!regmap) + return dev_err_probe(dev, -ENODEV, "Could not get parent regmap\n"); + + chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL); + if (!chip) + return -ENOMEM; + + pd = &chip->pinctrl_desc; + + pd->pctlops = &max7360_pinctrl_ops; + pd->pmxops = &max7360_pmxops; + pd->name = dev_name(dev); + pd->pins = max7360_pins; + pd->npins = MAX7360_MAX_GPIO; + pd->owner = THIS_MODULE; + + /* + * This MFD sub-device does not have any associated device tree node: + * properties are stored in the device node of the parent (MFD) device + * and this same node is used in phandles of client devices. + * Reuse this device tree node here, as otherwise the pinctrl subsystem + * would be confused by this topology. + */ + device_set_of_node_from_dev(dev, dev->parent); + + chip->pctldev = devm_pinctrl_register(dev, pd, chip); + if (IS_ERR(chip->pctldev)) + return dev_err_probe(dev, PTR_ERR(chip->pctldev), "can't register controller\n"); + + return 0; +} + +static struct platform_driver max7360_pinctrl_driver = { + .driver = { + .name = "max7360-pinctrl", + }, + .probe = max7360_pinctrl_probe, +}; +module_platform_driver(max7360_pinctrl_driver); + +MODULE_DESCRIPTION("MAX7360 pinctrl driver"); +MODULE_AUTHOR("Mathieu Dubois-Briand "); +MODULE_LICENSE("GPL"); From patchwork Thu May 22 12:06:20 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Dubois-Briand X-Patchwork-Id: 891793 Received: from relay3-d.mail.gandi.net (relay3-d.mail.gandi.net [217.70.183.195]) (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 6503A28A715; Thu, 22 May 2025 12:06:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747915613; cv=none; b=DxCcD5RBM61s/ZFgYy5kq4+I4KLJrbUJBcc3IV8WtiN/rFuF9AlFRzUBnDlNUF964x1A65JX2AwA+Oe2dED2ifTUaDik75QnbQcsESYPsMQrLr72zwTL6+d8O2ZRxpFwz3Zk9nFtJ1Q9fhPcIP193VwHHBx1Kbp/wDiURa81XSc= ARC-Message-Signature: i=1; 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Thu, 22 May 2025 12:06:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1747915608; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=C07v46ZJ6NLIc5kB8z+YwuK7NIbUJJo3tiPSKaS9zbw=; b=KFoXqKGTbIabQPeqUFFSRsojQlzJjOByxTjsq/NXv+89PsJ77Opl8H58ZyYG1qmh7ARwRO VabHVhsnXH3w8QRJ5XZ8LJuf7qddRmJunpB5DGQnYJ9hQLtsje4+SCfTvf6vg24NaCR/A5 9GD7XUOM3BL6mGEqa2KD6/0TRwBIUIYKmFcE4RLbjwYAWmygvJ19h4Ij/2GHBZR0oDgT+Z M7ye9/IwBdxZ6GoAGyTTE6JlGSmx9/SOom9V+M7uuHuUIHIXBNz6cqz1lY4bhCn4XWSpgp HaF1RnJYtF5l3JrPevzTtuOBBqA4SSYujN602JcVpNopPthR2CVgssdAr5cDjw== From: Mathieu Dubois-Briand Date: Thu, 22 May 2025 14:06:20 +0200 Subject: [PATCH v9 05/11] regmap: irq: Add support for chips without separate IRQ status Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250522-mdb-max7360-support-v9-5-74fc03517e41@bootlin.com> References: <20250522-mdb-max7360-support-v9-0-74fc03517e41@bootlin.com> In-Reply-To: <20250522-mdb-max7360-support-v9-0-74fc03517e41@bootlin.com> To: Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kamel Bouhara , Linus Walleij , Bartosz Golaszewski , Dmitry Torokhov , =?utf-8?q?Uwe_Kleine-K=C3=B6n?= =?utf-8?q?ig?= , Michael Walle , Mark Brown , Greg Kroah-Hartman , "Rafael J. Wysocki" , Danilo Krummrich Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-input@vger.kernel.org, linux-pwm@vger.kernel.org, andriy.shevchenko@intel.com, =?utf-8?q?Gr=C3=A9?= =?utf-8?q?gory_Clement?= , Thomas Petazzoni , Mathieu Dubois-Briand , Andy Shevchenko X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=ed25519-sha256; t=1747915601; l=7655; i=mathieu.dubois-briand@bootlin.com; s=20241219; h=from:subject:message-id; bh=4L9hpmaLOpRRn8v3HK8FFwF4ksgoZFdcvIRZvr15JLA=; b=/ePaQe48XFpPTeOIbKHqSP/qoZmdXjyCS7gjq7dkVPbQGSlr9q8aygs4xsEaJP5Egx7/w0P2v 5+hZs41oQrLBFRpbOUBa5cP7tko/ZClAwr+eKrOjwmTx33AC/huyjIf X-Developer-Key: i=mathieu.dubois-briand@bootlin.com; a=ed25519; pk=1PVTmzPXfKvDwcPUzG0aqdGoKZJA3b9s+3DqRlm0Lww= X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeeffedrtddtgdehleduucdltddurdegfedvrddttddmucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhfffugggtgffkfhgjvfevofesthejredtredtjeenucfhrhhomhepofgrthhhihgvuhcuffhusghoihhsqdeurhhirghnugcuoehmrghthhhivghurdguuhgsohhishdqsghrihgrnhgusegsohhothhlihhnrdgtohhmqeenucggtffrrghtthgvrhhnpedthfegtedvvdehjeeiheehheeuteejleektdefheehgfefgeelhfetgedttdfhteenucfkphepvdgrtddumegtsgdugeemheehieemjegrtddtmeeffhgtfhemfhgstdgumeduvdeivdemvdgvjeeinecuvehluhhsthgvrhfuihiivgepudenucfrrghrrghmpehinhgvthepvdgrtddumegtsgdugeemheehieemjegrtddtmeeffhgtfhemfhgstdgumeduvdeivdemvdgvjeeipdhhvghloheplgduvdejrddtrddurddungdpmhgrihhlfhhrohhmpehmrghthhhivghurdguuhgsohhishdqsghrihgrnhgusegsohhothhlihhnrdgtohhmpdhnsggprhgtphhtthhopedvgedprhgtphhtthhopegurghkrheskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhushdrfigrlhhlvghijheslhhinhgrrhhordhorhhgpdhrtghpthhtoheps ghrohhonhhivgeskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheprghnughrihihrdhshhgvvhgthhgvnhhkoheslhhinhhugidrihhnthgvlhdrtghomhdprhgtphhtthhopehmrghthhhivghurdguuhgsohhishdqsghrihgrnhgusegsohhothhlihhnrdgtohhmpdhrtghpthhtohepthhhohhmrghsrdhpvghtrgiiiihonhhisegsohhothhlihhnrdgtohhmpdhrtghpthhtohepsghrghhlsegsghguvghvrdhplhdprhgtphhtthhopegumhhithhrhidrthhorhhokhhhohhvsehgmhgrihhlrdgtohhm X-GND-Sasl: mathieu.dubois-briand@bootlin.com Some GPIO chips allow to rise an IRQ on GPIO level changes but do not provide an IRQ status for each separate line: only the current gpio level can be retrieved. Add support for these chips, emulating IRQ status by comparing GPIO levels with the levels during the previous interrupt. Signed-off-by: Mathieu Dubois-Briand Reviewed-by: Andy Shevchenko --- drivers/base/regmap/regmap-irq.c | 99 +++++++++++++++++++++++++++------------- include/linux/regmap.h | 3 ++ 2 files changed, 71 insertions(+), 31 deletions(-) diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c index 6c6869188c31..45299d29fd0b 100644 --- a/drivers/base/regmap/regmap-irq.c +++ b/drivers/base/regmap/regmap-irq.c @@ -6,11 +6,13 @@ // // Author: Mark Brown +#include #include #include #include #include #include +#include #include #include #include @@ -33,6 +35,7 @@ struct regmap_irq_chip_data { void *status_reg_buf; unsigned int *main_status_buf; unsigned int *status_buf; + unsigned int *prev_status_buf; unsigned int *mask_buf; unsigned int *mask_buf_def; unsigned int *wake_buf; @@ -332,27 +335,13 @@ static inline int read_sub_irq_data(struct regmap_irq_chip_data *data, return ret; } -static irqreturn_t regmap_irq_thread(int irq, void *d) +static int read_irq_data(struct regmap_irq_chip_data *data) { - struct regmap_irq_chip_data *data = d; const struct regmap_irq_chip *chip = data->chip; struct regmap *map = data->map; int ret, i; - bool handled = false; u32 reg; - if (chip->handle_pre_irq) - chip->handle_pre_irq(chip->irq_drv_data); - - if (chip->runtime_pm) { - ret = pm_runtime_get_sync(map->dev); - if (ret < 0) { - dev_err(map->dev, "IRQ thread failed to resume: %d\n", - ret); - goto exit; - } - } - /* * Read only registers with active IRQs if the chip has 'main status * register'. Else read in the statuses, using a single bulk read if @@ -379,10 +368,8 @@ static irqreturn_t regmap_irq_thread(int irq, void *d) reg = data->get_irq_reg(data, chip->main_status, i); ret = regmap_read(map, reg, &data->main_status_buf[i]); if (ret) { - dev_err(map->dev, - "Failed to read IRQ status %d\n", - ret); - goto exit; + dev_err(map->dev, "Failed to read IRQ status %d\n", ret); + return ret; } } @@ -398,10 +385,8 @@ static irqreturn_t regmap_irq_thread(int irq, void *d) ret = read_sub_irq_data(data, b); if (ret != 0) { - dev_err(map->dev, - "Failed to read IRQ status %d\n", - ret); - goto exit; + dev_err(map->dev, "Failed to read IRQ status %d\n", ret); + return ret; } } @@ -418,9 +403,8 @@ static irqreturn_t regmap_irq_thread(int irq, void *d) data->status_reg_buf, chip->num_regs); if (ret != 0) { - dev_err(map->dev, "Failed to read IRQ status: %d\n", - ret); - goto exit; + dev_err(map->dev, "Failed to read IRQ status: %d\n", ret); + return ret; } for (i = 0; i < data->chip->num_regs; i++) { @@ -436,7 +420,7 @@ static irqreturn_t regmap_irq_thread(int irq, void *d) break; default: BUG(); - goto exit; + return -EIO; } } @@ -447,10 +431,8 @@ static irqreturn_t regmap_irq_thread(int irq, void *d) ret = regmap_read(map, reg, &data->status_buf[i]); if (ret != 0) { - dev_err(map->dev, - "Failed to read IRQ status: %d\n", - ret); - goto exit; + dev_err(map->dev, "Failed to read IRQ status: %d\n", ret); + return ret; } } } @@ -459,6 +441,42 @@ static irqreturn_t regmap_irq_thread(int irq, void *d) for (i = 0; i < data->chip->num_regs; i++) data->status_buf[i] = ~data->status_buf[i]; + return 0; +} + +static irqreturn_t regmap_irq_thread(int irq, void *d) +{ + struct regmap_irq_chip_data *data = d; + const struct regmap_irq_chip *chip = data->chip; + struct regmap *map = data->map; + int ret, i; + bool handled = false; + u32 reg; + + if (chip->handle_pre_irq) + chip->handle_pre_irq(chip->irq_drv_data); + + if (chip->runtime_pm) { + ret = pm_runtime_get_sync(map->dev); + if (ret < 0) { + dev_err(map->dev, "IRQ thread failed to resume: %d\n", ret); + goto exit; + } + } + + ret = read_irq_data(data); + if (ret < 0) + goto exit; + + if (chip->status_is_level) { + for (i = 0; i < data->chip->num_regs; i++) { + unsigned int val = data->status_buf[i]; + + data->status_buf[i] ^= data->prev_status_buf[i]; + data->prev_status_buf[i] = val; + } + } + /* * Ignore masked IRQs and ack if we need to; we ack early so * there is no race between handling and acknowledging the @@ -705,6 +723,13 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode, if (!d->status_buf) goto err_alloc; + if (chip->status_is_level) { + d->prev_status_buf = kcalloc(chip->num_regs, sizeof(*d->prev_status_buf), + GFP_KERNEL); + if (!d->prev_status_buf) + goto err_alloc; + } + d->mask_buf = kcalloc(chip->num_regs, sizeof(*d->mask_buf), GFP_KERNEL); if (!d->mask_buf) @@ -881,6 +906,16 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode, } } + /* Store current levels */ + if (chip->status_is_level) { + ret = read_irq_data(d); + if (ret < 0) + goto err_alloc; + + memcpy(d->prev_status_buf, d->status_buf, + array_size(d->chip->num_regs, sizeof(d->prev_status_buf[0]))); + } + ret = regmap_irq_create_domain(fwnode, irq_base, chip, d); if (ret) goto err_alloc; @@ -908,6 +943,7 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode, kfree(d->mask_buf); kfree(d->main_status_buf); kfree(d->status_buf); + kfree(d->prev_status_buf); kfree(d->status_reg_buf); if (d->config_buf) { for (i = 0; i < chip->num_config_bases; i++) @@ -985,6 +1021,7 @@ void regmap_del_irq_chip(int irq, struct regmap_irq_chip_data *d) kfree(d->main_status_buf); kfree(d->status_reg_buf); kfree(d->status_buf); + kfree(d->prev_status_buf); if (d->config_buf) { for (i = 0; i < d->chip->num_config_bases; i++) kfree(d->config_buf[i]); diff --git a/include/linux/regmap.h b/include/linux/regmap.h index d17c5ea3d55d..02b83f5499b8 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -1641,6 +1641,8 @@ struct regmap_irq_chip_data; * @ack_invert: Inverted ack register: cleared bits for ack. * @clear_ack: Use this to set 1 and 0 or vice-versa to clear interrupts. * @status_invert: Inverted status register: cleared bits are active interrupts. + * @status_is_level: Status register is actuall signal level: Xor status + * register with previous value to get active interrupts. * @wake_invert: Inverted wake register: cleared bits are wake enabled. * @type_in_mask: Use the mask registers for controlling irq type. Use this if * the hardware provides separate bits for rising/falling edge @@ -1704,6 +1706,7 @@ struct regmap_irq_chip { unsigned int ack_invert:1; unsigned int clear_ack:1; unsigned int status_invert:1; + unsigned int status_is_level:1; unsigned int wake_invert:1; unsigned int type_in_mask:1; unsigned int clear_on_unmask:1; From patchwork Thu May 22 12:06:22 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Dubois-Briand X-Patchwork-Id: 891792 Received: from relay3-d.mail.gandi.net (relay3-d.mail.gandi.net [217.70.183.195]) (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 49F0328B4EB; Thu, 22 May 2025 12:06:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747915614; cv=none; b=ftcNj+kPliMfKTgPjLq5Hw8nvPjeJK8qTTTN/Sn+LHhfvcH2+JI8OoCABZeWxJfZymbghy5o9fSh7N0uZT5C11nChN8G40KOTH86Ddy81XvWSmrC24qXB4sB1x6mhkSsf5udsQJ+5shSTYYyp1ZvevBdVZfja18zoP86gjOa1Fg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747915614; c=relaxed/simple; bh=bnqDDSUw67uMCw0TA2I9vpvFQ2UMJGa2QZAL3Fzcc2I=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=ehDZziT9BGuDsBIpYTUb9BVax4w6OM/LxxtdvW99x1PCEHyB4xrZ47qCN0iY/QHBply6SgxuohQgg3dkugmCvejSgApMGojWSQz92YEPJA13gRvRRQPlwncZEONK396501QxHrxDN/tRgf2xQZmahDmmJ15vBN1utfJhFc+ZCFo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=YF//cfqJ; arc=none smtp.client-ip=217.70.183.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="YF//cfqJ" Received: by mail.gandi.net (Postfix) with ESMTPSA id C22751FD47; Thu, 22 May 2025 12:06:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1747915610; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=pxO9n7kzYqDZ1mf4RDLfXt3OXq/5RzLLZD0JQyoUnmY=; b=YF//cfqJC5p7ZlbLRcb5dpfikuhnVXgiazR3a21r1Q+mx9ivFd/bnaL079Q5J8YfidKM4x ZInMLKT+bTPtSvNFsjg8jvRPAh/kYwtxDoAKDHHk0bu4+/QL3B1pdxmvr6QxBX8laQuEsm QUuIQ21jW458kvvFevRPqh7OhSiFsz3jwFo9yFJvYQrCbdbkRAA8WX5bJm+57SaZRtpM9L hn7B14xQ7D9VQRfG2T/82a6Ujm4BdHPfzLdaFOCxMrEEVHbqXECmjmZCzFJXr7CUvsUoA9 BsL5zr931WxbLPciPAiR5hBCrwvf27KUItWssa3SZipkjyYKP5e78YDiY0YHWA== From: Mathieu Dubois-Briand Date: Thu, 22 May 2025 14:06:22 +0200 Subject: [PATCH v9 07/11] gpio: regmap: Allow to provide init_valid_mask callback Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250522-mdb-max7360-support-v9-7-74fc03517e41@bootlin.com> References: <20250522-mdb-max7360-support-v9-0-74fc03517e41@bootlin.com> In-Reply-To: <20250522-mdb-max7360-support-v9-0-74fc03517e41@bootlin.com> To: Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kamel Bouhara , Linus Walleij , Bartosz Golaszewski , Dmitry Torokhov , =?utf-8?q?Uwe_Kleine-K=C3=B6n?= =?utf-8?q?ig?= , Michael Walle , Mark Brown , Greg Kroah-Hartman , "Rafael J. Wysocki" , Danilo Krummrich Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-input@vger.kernel.org, linux-pwm@vger.kernel.org, andriy.shevchenko@intel.com, =?utf-8?q?Gr=C3=A9?= =?utf-8?q?gory_Clement?= , Thomas Petazzoni , Mathieu Dubois-Briand , Andy Shevchenko X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=ed25519-sha256; t=1747915601; l=2166; i=mathieu.dubois-briand@bootlin.com; s=20241219; h=from:subject:message-id; bh=bnqDDSUw67uMCw0TA2I9vpvFQ2UMJGa2QZAL3Fzcc2I=; b=b6rm7w4qAB3NTw9DMXVNImQwYa94tW24gaqjzvw+SyxZsNxpAW5Go6Ohu/59IJK8Sj+byJ9fC LKJG6detpJtAHwmF6zPHQwmD2csRVdpj0Tas0pRvu/f55t6WfLM9iMc X-Developer-Key: i=mathieu.dubois-briand@bootlin.com; a=ed25519; pk=1PVTmzPXfKvDwcPUzG0aqdGoKZJA3b9s+3DqRlm0Lww= X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeeffedrtddtgdehleduucdltddurdegfedvrddttddmucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhfffugggtgffkfhgjvfevofesthejredtredtjeenucfhrhhomhepofgrthhhihgvuhcuffhusghoihhsqdeurhhirghnugcuoehmrghthhhivghurdguuhgsohhishdqsghrihgrnhgusegsohhothhlihhnrdgtohhmqeenucggtffrrghtthgvrhhnpedthfegtedvvdehjeeiheehheeuteejleektdefheehgfefgeelhfetgedttdfhteenucfkphepvdgrtddumegtsgdugeemheehieemjegrtddtmeeffhgtfhemfhgstdgumeduvdeivdemvdgvjeeinecuvehluhhsthgvrhfuihiivgepudenucfrrghrrghmpehinhgvthepvdgrtddumegtsgdugeemheehieemjegrtddtmeeffhgtfhemfhgstdgumeduvdeivdemvdgvjeeipdhhvghloheplgduvdejrddtrddurddungdpmhgrihhlfhhrohhmpehmrghthhhivghurdguuhgsohhishdqsghrihgrnhgusegsohhothhlihhnrdgtohhmpdhnsggprhgtphhtthhopedvgedprhgtphhtthhopegurghkrheskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhushdrfigrlhhlvghijheslhhinhgrrhhordhorhhgpdhrtghpthhtoheps ghrohhonhhivgeskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheprghnughrihihrdhshhgvvhgthhgvnhhkoheslhhinhhugidrihhnthgvlhdrtghomhdprhgtphhtthhopehmrghthhhivghurdguuhgsohhishdqsghrihgrnhgusegsohhothhlihhnrdgtohhmpdhrtghpthhtohepthhhohhmrghsrdhpvghtrgiiiihonhhisegsohhothhlihhnrdgtohhmpdhrtghpthhtohepsghrghhlsegsghguvghvrdhplhdprhgtphhtthhopegumhhithhrhidrthhorhhokhhhohhvsehgmhgrihhlrdgtohhm X-GND-Sasl: mathieu.dubois-briand@bootlin.com Allows to populate the gpio_regmap_config structure with init_valid_mask() callback to set on the final gpio_chip structure. Reviewed-by: Michael Walle Reviewed-by: Andy Shevchenko Reviewed-by: Linus Walleij Signed-off-by: Mathieu Dubois-Briand --- drivers/gpio/gpio-regmap.c | 1 + include/linux/gpio/regmap.h | 7 +++++++ 2 files changed, 8 insertions(+) diff --git a/drivers/gpio/gpio-regmap.c b/drivers/gpio/gpio-regmap.c index 9cbbbaf82609..3d6a37be6411 100644 --- a/drivers/gpio/gpio-regmap.c +++ b/drivers/gpio/gpio-regmap.c @@ -256,6 +256,7 @@ struct gpio_regmap *gpio_regmap_register(const struct gpio_regmap_config *config chip->names = config->names; chip->label = config->label ?: dev_name(config->parent); chip->can_sleep = regmap_might_sleep(config->regmap); + chip->init_valid_mask = config->init_valid_mask; chip->request = gpiochip_generic_request; chip->free = gpiochip_generic_free; diff --git a/include/linux/gpio/regmap.h b/include/linux/gpio/regmap.h index 19b52ac03a5d..622a2939ebe0 100644 --- a/include/linux/gpio/regmap.h +++ b/include/linux/gpio/regmap.h @@ -6,6 +6,7 @@ struct device; struct fwnode_handle; struct gpio_regmap; +struct gpio_chip; struct irq_domain; struct regmap; @@ -40,6 +41,8 @@ struct regmap; * @drvdata: (Optional) Pointer to driver specific data which is * not used by gpio-remap but is provided "as is" to the * driver callback(s). + * @init_valid_mask: (Optional) Routine to initialize @valid_mask, to be used + * if not all GPIOs are valid. * @regmap_irq_chip: (Optional) Pointer on an regmap_irq_chip structure. If * set, a regmap-irq device will be created and the IRQ * domain will be set accordingly. @@ -93,6 +96,10 @@ struct gpio_regmap_config { unsigned int offset, unsigned int *reg, unsigned int *mask); + int (*init_valid_mask)(struct gpio_chip *gc, + unsigned long *valid_mask, + unsigned int ngpios); + void *drvdata; }; From patchwork Thu May 22 12:06:24 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Dubois-Briand X-Patchwork-Id: 891791 Received: from relay3-d.mail.gandi.net (relay3-d.mail.gandi.net [217.70.183.195]) (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 F02D928B7DB; Thu, 22 May 2025 12:06:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747915616; cv=none; b=j2YxzmmlNmixWwNuCcjhFzqoaSlrZr79hOgx4litfIiZSTeEAt7lx/axyCIB4XTm24sPrCFxcijtYApVQk64k9BxXsbP0fs/O2OK3Erb+r18f1tNtZV0AGEmKIlqDTVU84LN4YfTXbDGr0/nIjyOGu5/69RsQl0rhRJZRk2MmaY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747915616; c=relaxed/simple; bh=JI3737qpZV5i/n/DYPnkPTfd1V/ujAG4pR1TJ/4gbgo=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=DNcvphH+7vFXXrPW/MskKjE+srPKQXbu8NFij4lk2wedzdpuKqe07B4Yp4PX5rgI6R152LZEmCpnPeX/+niiaszpubWmsoF+0jWTm8MT2UX+24RRd66rXl8rh8lLYW3ER2b/DVFMjKdrqss4M90Vhhiewj7BQWvFGcSyXPcYbrY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=R9Pg0Vr0; arc=none smtp.client-ip=217.70.183.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="R9Pg0Vr0" Received: by mail.gandi.net (Postfix) with ESMTPSA id CDE051FCF1; Thu, 22 May 2025 12:06:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1747915612; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=uGf57HS6QUeaCcFUW+/oTiK0us3RHmT+M6Av6twgbrQ=; b=R9Pg0Vr0ua70txpQ9r7BF2m4jDUHr4BkYu4HGmclL6zbtC42AFEU5wEtTsF+JDeGw3c9Ws 3c0Mha9VNj8D+Ob4KE42VIDlGgYEZn4ibmNKVCoXQQ0+3v2u+f+uJe6lqEVIRGAVpQCLUq wT2M9vQfg++6WqCnpF+TwM3tM8ZFLfFCZtl2sl6zzwes0kR64Eap/P2p35A9CxqXOVP3K+ SVHGfx3sNYHFWkoQ38ctbzs2p607vDNkRuLZujvxFgKYWI0+JNWq732VZm+xl0qqylk86W wKm/FGTUK1sngsNEnvr2D1aRLRulL+gomGDaH9FLA4KHkh5DUbyCDmm9EEr0KA== From: Mathieu Dubois-Briand Date: Thu, 22 May 2025 14:06:24 +0200 Subject: [PATCH v9 09/11] input: keyboard: Add support for MAX7360 keypad Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250522-mdb-max7360-support-v9-9-74fc03517e41@bootlin.com> References: <20250522-mdb-max7360-support-v9-0-74fc03517e41@bootlin.com> In-Reply-To: <20250522-mdb-max7360-support-v9-0-74fc03517e41@bootlin.com> To: Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kamel Bouhara , Linus Walleij , Bartosz Golaszewski , Dmitry Torokhov , =?utf-8?q?Uwe_Kleine-K=C3=B6n?= =?utf-8?q?ig?= , Michael Walle , Mark Brown , Greg Kroah-Hartman , "Rafael J. Wysocki" , Danilo Krummrich Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-input@vger.kernel.org, linux-pwm@vger.kernel.org, andriy.shevchenko@intel.com, =?utf-8?q?Gr=C3=A9?= =?utf-8?q?gory_Clement?= , Thomas Petazzoni , Mathieu Dubois-Briand X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=ed25519-sha256; t=1747915601; l=11626; i=mathieu.dubois-briand@bootlin.com; s=20241219; h=from:subject:message-id; bh=JI3737qpZV5i/n/DYPnkPTfd1V/ujAG4pR1TJ/4gbgo=; b=7poqdLzCGIQPqDBGWhu5JeXQskjoFyC611bkLXTPErSiTLSyIZJQwZ592Smc7412HTiLYl4iB SlG8ymfmganA8prbRPcb3o0zu/uthNqZrllqmV5ZtRIYDtuH21xKsFc X-Developer-Key: i=mathieu.dubois-briand@bootlin.com; a=ed25519; pk=1PVTmzPXfKvDwcPUzG0aqdGoKZJA3b9s+3DqRlm0Lww= X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeeffedrtddtgdehleduucdltddurdegfedvrddttddmucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhfffugggtgffkfhgjvfevofesthejredtredtjeenucfhrhhomhepofgrthhhihgvuhcuffhusghoihhsqdeurhhirghnugcuoehmrghthhhivghurdguuhgsohhishdqsghrihgrnhgusegsohhothhlihhnrdgtohhmqeenucggtffrrghtthgvrhhnpedthfegtedvvdehjeeiheehheeuteejleektdefheehgfefgeelhfetgedttdfhteenucfkphepvdgrtddumegtsgdugeemheehieemjegrtddtmeeffhgtfhemfhgstdgumeduvdeivdemvdgvjeeinecuvehluhhsthgvrhfuihiivgepudenucfrrghrrghmpehinhgvthepvdgrtddumegtsgdugeemheehieemjegrtddtmeeffhgtfhemfhgstdgumeduvdeivdemvdgvjeeipdhhvghloheplgduvdejrddtrddurddungdpmhgrihhlfhhrohhmpehmrghthhhivghurdguuhgsohhishdqsghrihgrnhgusegsohhothhlihhnrdgtohhmpdhnsggprhgtphhtthhopedvfedprhgtphhtthhopegurghkrheskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhushdrfigrlhhlvghijheslhhinhgrrhhordhorhhgpdhrtghpthhtoheps ghrohhonhhivgeskhgvrhhnvghlrdhorhhgpdhrtghpthhtohepmhgrthhhihgvuhdrughusghoihhsqdgsrhhirghnugessghoohhtlhhinhdrtghomhdprhgtphhtthhopehthhhomhgrshdrphgvthgriiiiohhnihessghoohhtlhhinhdrtghomhdprhgtphhtthhopegsrhhglhessghguggvvhdrphhlpdhrtghpthhtohepughmihhtrhihrdhtohhrohhkhhhovhesghhmrghilhdrtghomhdprhgtphhtthhopeguvghvihgtvghtrhgvvgesvhhgvghrrdhkvghrnhgvlhdrohhrgh X-GND-Sasl: mathieu.dubois-briand@bootlin.com Add driver for Maxim Integrated MAX7360 keypad controller, providing support for up to 64 keys, with a matrix of 8 columns and 8 rows. Signed-off-by: Mathieu Dubois-Briand --- drivers/input/keyboard/Kconfig | 12 ++ drivers/input/keyboard/Makefile | 1 + drivers/input/keyboard/max7360-keypad.c | 308 ++++++++++++++++++++++++++++++++ 3 files changed, 321 insertions(+) diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig index 721ab69e84ac..93b5cccf6892 100644 --- a/drivers/input/keyboard/Kconfig +++ b/drivers/input/keyboard/Kconfig @@ -421,6 +421,18 @@ config KEYBOARD_MAX7359 To compile this driver as a module, choose M here: the module will be called max7359_keypad. +config KEYBOARD_MAX7360 + tristate "Maxim MAX7360 Key Switch Controller" + select INPUT_MATRIXKMAP + depends on I2C + depends on MFD_MAX7360 + help + If you say yes here you get support for the keypad controller on the + Maxim MAX7360 I/O Expander. + + To compile this driver as a module, choose M here: the module will be + called max7360_keypad. + config KEYBOARD_MPR121 tristate "Freescale MPR121 Touchkey" depends on I2C diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile index 1e0721c30709..b49d32d4003d 100644 --- a/drivers/input/keyboard/Makefile +++ b/drivers/input/keyboard/Makefile @@ -42,6 +42,7 @@ obj-$(CONFIG_KEYBOARD_LPC32XX) += lpc32xx-keys.o obj-$(CONFIG_KEYBOARD_MAPLE) += maple_keyb.o obj-$(CONFIG_KEYBOARD_MATRIX) += matrix_keypad.o obj-$(CONFIG_KEYBOARD_MAX7359) += max7359_keypad.o +obj-$(CONFIG_KEYBOARD_MAX7360) += max7360-keypad.o obj-$(CONFIG_KEYBOARD_MPR121) += mpr121_touchkey.o obj-$(CONFIG_KEYBOARD_MT6779) += mt6779-keypad.o obj-$(CONFIG_KEYBOARD_MTK_PMIC) += mtk-pmic-keys.o diff --git a/drivers/input/keyboard/max7360-keypad.c b/drivers/input/keyboard/max7360-keypad.c new file mode 100644 index 000000000000..6bae00e7888b --- /dev/null +++ b/drivers/input/keyboard/max7360-keypad.c @@ -0,0 +1,308 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright 2025 Bootlin + * + * Author: Mathieu Dubois-Briand + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct max7360_keypad { + struct input_dev *input; + unsigned int rows; + unsigned int cols; + unsigned int debounce_ms; + int irq; + struct regmap *regmap; + unsigned short keycodes[MAX7360_MAX_KEY_ROWS * MAX7360_MAX_KEY_COLS]; +}; + +static irqreturn_t max7360_keypad_irq(int irq, void *data) +{ + struct max7360_keypad *max7360_keypad = data; + struct device *dev = max7360_keypad->input->dev.parent; + unsigned int val; + unsigned int row, col; + unsigned int release; + unsigned int code; + int error; + + error = regmap_read(max7360_keypad->regmap, MAX7360_REG_KEYFIFO, &val); + if (error) { + dev_err(dev, "Failed to read MAX7360 FIFO"); + return IRQ_NONE; + } + + /* FIFO overflow: ignore it and get next event. */ + if (val == MAX7360_FIFO_OVERFLOW) { + dev_warn(dev, "max7360 FIFO overflow"); + error = regmap_read_poll_timeout(max7360_keypad->regmap, MAX7360_REG_KEYFIFO, + val, val != MAX7360_FIFO_OVERFLOW, 0, 1000); + if (error) { + dev_err(dev, "Failed to empty MAX7360 FIFO"); + return IRQ_NONE; + } + } + + if (val == MAX7360_FIFO_EMPTY) { + dev_dbg(dev, "Got a spurious interrupt"); + + return IRQ_NONE; + } + + row = FIELD_GET(MAX7360_FIFO_ROW, val); + col = FIELD_GET(MAX7360_FIFO_COL, val); + release = val & MAX7360_FIFO_RELEASE; + + code = MATRIX_SCAN_CODE(row, col, get_count_order(max7360_keypad->cols)); + + dev_dbg(dev, "key[%d:%d] %s\n", row, col, release ? "release" : "press"); + + input_event(max7360_keypad->input, EV_MSC, MSC_SCAN, code); + input_report_key(max7360_keypad->input, max7360_keypad->keycodes[code], !release); + input_sync(max7360_keypad->input); + + return IRQ_HANDLED; +} + +static int max7360_keypad_open(struct input_dev *pdev) +{ + struct max7360_keypad *max7360_keypad = input_get_drvdata(pdev); + struct device *dev = max7360_keypad->input->dev.parent; + int error; + + /* Somebody is using the device: get out of sleep. */ + error = regmap_write_bits(max7360_keypad->regmap, MAX7360_REG_CONFIG, + MAX7360_CFG_SLEEP, MAX7360_CFG_SLEEP); + if (error) + dev_err(dev, "Failed to write max7360 configuration: %d\n", error); + + return error; +} + +static void max7360_keypad_close(struct input_dev *pdev) +{ + struct max7360_keypad *max7360_keypad = input_get_drvdata(pdev); + struct device *dev = max7360_keypad->input->dev.parent; + int error; + + /* Nobody is using the device anymore: go to sleep. */ + error = regmap_write_bits(max7360_keypad->regmap, MAX7360_REG_CONFIG, MAX7360_CFG_SLEEP, 0); + if (error) + dev_err(dev, "Failed to write max7360 configuration: %d\n", error); +} + +static int max7360_keypad_hw_init(struct max7360_keypad *max7360_keypad) +{ + struct device *dev = max7360_keypad->input->dev.parent; + unsigned int val; + int error; + + val = max7360_keypad->debounce_ms - MAX7360_DEBOUNCE_MIN; + error = regmap_write_bits(max7360_keypad->regmap, MAX7360_REG_DEBOUNCE, + MAX7360_DEBOUNCE, + FIELD_PREP(MAX7360_DEBOUNCE, val)); + if (error) + return dev_err_probe(dev, error, + "Failed to write max7360 debounce configuration\n"); + + error = regmap_write_bits(max7360_keypad->regmap, MAX7360_REG_INTERRUPT, + MAX7360_INTERRUPT_TIME_MASK, + FIELD_PREP(MAX7360_INTERRUPT_TIME_MASK, 1)); + if (error) + return dev_err_probe(dev, error, + "Failed to write max7360 keypad interrupt configuration\n"); + + return 0; +} + +static int max7360_keypad_build_keymap(struct max7360_keypad *max7360_keypad) +{ + struct input_dev *input_dev = max7360_keypad->input; + struct device *dev = input_dev->dev.parent->parent; + struct matrix_keymap_data keymap_data; + const char *propname = "linux,keymap"; + unsigned int max_keys; + int error; + int size; + + size = device_property_count_u32(dev, propname); + if (size <= 0) { + dev_err(dev, "missing or malformed property %s: %d\n", propname, size); + return size < 0 ? size : -EINVAL; + } + + max_keys = max7360_keypad->cols * max7360_keypad->rows; + if (size > max_keys) { + dev_err(dev, "%s size overflow (%d vs max %u)\n", propname, size, max_keys); + return -EINVAL; + } + + u32 *keys __free(kfree) = kmalloc_array(size, sizeof(*keys), GFP_KERNEL); + if (!keys) + return -ENOMEM; + + error = device_property_read_u32_array(dev, propname, keys, size); + if (error) { + dev_err(dev, "failed to read %s property: %d\n", propname, error); + return error; + } + + keymap_data.keymap = keys; + keymap_data.keymap_size = size; + error = matrix_keypad_build_keymap(&keymap_data, NULL, + max7360_keypad->rows, max7360_keypad->cols, + max7360_keypad->keycodes, max7360_keypad->input); + if (error) + return error; + + return 0; +} + +static int max7360_keypad_parse_fw(struct device *dev, + struct max7360_keypad *max7360_keypad, + bool *autorepeat) +{ + int error; + + error = matrix_keypad_parse_properties(dev->parent, &max7360_keypad->rows, + &max7360_keypad->cols); + if (error) + return error; + + if (!max7360_keypad->rows || !max7360_keypad->cols || + max7360_keypad->rows > MAX7360_MAX_KEY_ROWS || + max7360_keypad->cols > MAX7360_MAX_KEY_COLS) { + dev_err(dev, "Invalid number of columns or rows (%ux%u)\n", + max7360_keypad->cols, max7360_keypad->rows); + return -EINVAL; + } + + *autorepeat = device_property_read_bool(dev->parent, "autorepeat"); + + max7360_keypad->debounce_ms = MAX7360_DEBOUNCE_MIN; + error = device_property_read_u32(dev->parent, "keypad-debounce-delay-ms", + &max7360_keypad->debounce_ms); + if (error == -EINVAL) { + dev_info(dev, "Using default keypad-debounce-delay-ms: %u\n", + max7360_keypad->debounce_ms); + } else if (error < 0) { + dev_err(dev, "Failed to read keypad-debounce-delay-ms property\n"); + return error; + } + + if (!in_range(max7360_keypad->debounce_ms, MAX7360_DEBOUNCE_MIN, + MAX7360_DEBOUNCE_MAX - MAX7360_DEBOUNCE_MIN)) { + dev_err(dev, "Invalid keypad-debounce-delay-ms: %u, should be between %u and %u.\n", + max7360_keypad->debounce_ms, MAX7360_DEBOUNCE_MIN, MAX7360_DEBOUNCE_MAX); + return -EINVAL; + } + + return 0; +} + +static int max7360_keypad_probe(struct platform_device *pdev) +{ + struct max7360_keypad *max7360_keypad; + struct device *dev = &pdev->dev; + struct input_dev *input; + struct regmap *regmap; + bool autorepeat; + int error; + int irq; + + regmap = dev_get_regmap(dev->parent, NULL); + if (!regmap) + return dev_err_probe(dev, -ENODEV, "Could not get parent regmap\n"); + + irq = fwnode_irq_get_byname(dev_fwnode(dev->parent), "intk"); + if (irq < 0) + return dev_err_probe(dev, irq, "Failed to get IRQ\n"); + + max7360_keypad = devm_kzalloc(dev, sizeof(*max7360_keypad), GFP_KERNEL); + if (!max7360_keypad) + return -ENOMEM; + + max7360_keypad->regmap = regmap; + + error = max7360_keypad_parse_fw(dev, max7360_keypad, &autorepeat); + if (error) + return error; + + input = devm_input_allocate_device(dev); + if (!input) + return -ENOMEM; + + max7360_keypad->input = input; + + input->id.bustype = BUS_I2C; + input->name = pdev->name; + input->open = max7360_keypad_open; + input->close = max7360_keypad_close; + + error = max7360_keypad_build_keymap(max7360_keypad); + if (error) + return dev_err_probe(dev, error, "Failed to build keymap\n"); + + input_set_capability(input, EV_MSC, MSC_SCAN); + if (autorepeat) + __set_bit(EV_REP, input->evbit); + + input_set_drvdata(input, max7360_keypad); + + error = devm_request_threaded_irq(dev, irq, NULL, max7360_keypad_irq, + IRQF_ONESHOT, + "max7360-keypad", max7360_keypad); + if (error) + return dev_err_probe(dev, error, "Failed to register interrupt\n"); + + error = input_register_device(input); + if (error) + return dev_err_probe(dev, error, "Could not register input device\n"); + + error = max7360_keypad_hw_init(max7360_keypad); + if (error) + return dev_err_probe(dev, error, "Failed to initialize max7360 keypad\n"); + + device_init_wakeup(dev, true); + error = dev_pm_set_wake_irq(dev, irq); + if (error) + dev_warn(dev, "Failed to set up wakeup irq: %d\n", error); + + return 0; +} + +static void max7360_keypad_remove(struct platform_device *pdev) +{ + dev_pm_clear_wake_irq(&pdev->dev); + device_init_wakeup(&pdev->dev, false); +} + +static struct platform_driver max7360_keypad_driver = { + .driver = { + .name = "max7360-keypad", + }, + .probe = max7360_keypad_probe, + .remove = max7360_keypad_remove, +}; +module_platform_driver(max7360_keypad_driver); + +MODULE_DESCRIPTION("MAX7360 Keypad driver"); +MODULE_AUTHOR("Mathieu Dubois-Briand "); +MODULE_LICENSE("GPL"); From patchwork Thu May 22 12:06:26 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mathieu Dubois-Briand X-Patchwork-Id: 891790 Received: from relay3-d.mail.gandi.net (relay3-d.mail.gandi.net [217.70.183.195]) (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 59D6F28C017; 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Wysocki" , Danilo Krummrich Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-input@vger.kernel.org, linux-pwm@vger.kernel.org, andriy.shevchenko@intel.com, =?utf-8?q?Gr=C3=A9?= =?utf-8?q?gory_Clement?= , Thomas Petazzoni , Mathieu Dubois-Briand X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=ed25519-sha256; t=1747915601; l=1082; i=mathieu.dubois-briand@bootlin.com; s=20241219; h=from:subject:message-id; bh=TKtExURtBBoXKlQbeQ8pWXApgKHf6ZVWdlros+uARmM=; b=bI5cST6pMne/Waha6dchjwdoLVKlx86LbpIG78Lj/OuTn1+i4RkUegP2u9FTefys413Vz3LdK e12hHUDjPqkBuybg1ZG54jffj0yjC3kMFzaLvK54gy0oh6MBnYAtO/X X-Developer-Key: i=mathieu.dubois-briand@bootlin.com; a=ed25519; pk=1PVTmzPXfKvDwcPUzG0aqdGoKZJA3b9s+3DqRlm0Lww= X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeeffedrtddtgdehleduucdltddurdegfedvrddttddmucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhfffugggtgffkfhgjvfevofesthejredtredtjeenucfhrhhomhepofgrthhhihgvuhcuffhusghoihhsqdeurhhirghnugcuoehmrghthhhivghurdguuhgsohhishdqsghrihgrnhgusegsohhothhlihhnrdgtohhmqeenucggtffrrghtthgvrhhnpedthfegtedvvdehjeeiheehheeuteejleektdefheehgfefgeelhfetgedttdfhteenucfkphepvdgrtddumegtsgdugeemheehieemjegrtddtmeeffhgtfhemfhgstdgumeduvdeivdemvdgvjeeinecuvehluhhsthgvrhfuihiivgepieenucfrrghrrghmpehinhgvthepvdgrtddumegtsgdugeemheehieemjegrtddtmeeffhgtfhemfhgstdgumeduvdeivdemvdgvjeeipdhhvghloheplgduvdejrddtrddurddungdpmhgrihhlfhhrohhmpehmrghthhhivghurdguuhgsohhishdqsghrihgrnhgusegsohhothhlihhnrdgtohhmpdhnsggprhgtphhtthhopedvfedprhgtphhtthhopegurghkrheskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhushdrfigrlhhlvghijheslhhinhgrrhhordhorhhgpdhrtghpthhtoheps ghrohhonhhivgeskhgvrhhnvghlrdhorhhgpdhrtghpthhtohepmhgrthhhihgvuhdrughusghoihhsqdgsrhhirghnugessghoohhtlhhinhdrtghomhdprhgtphhtthhopehthhhomhgrshdrphgvthgriiiiohhnihessghoohhtlhhinhdrtghomhdprhgtphhtthhopegsrhhglhessghguggvvhdrphhlpdhrtghpthhtohepughmihhtrhihrdhtohhrohhkhhhovhesghhmrghilhdrtghomhdprhgtphhtthhopeguvghvihgtvghtrhgvvgesvhhgvghrrdhkvghrnhgvlhdrohhrgh X-GND-Sasl: mathieu.dubois-briand@bootlin.com Add myself as maintainer of Maxim MAX7360 driver and device-tree bindings. Signed-off-by: Mathieu Dubois-Briand --- MAINTAINERS | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 69511c3b2b76..7e6d95ee103c 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -14576,6 +14576,19 @@ L: linux-iio@vger.kernel.org S: Maintained F: drivers/iio/temperature/max30208.c +MAXIM MAX7360 KEYPAD LED MFD DRIVER +M: Mathieu Dubois-Briand +S: Maintained +F: Documentation/devicetree/bindings/gpio/maxim,max7360-gpio.yaml +F: Documentation/devicetree/bindings/mfd/maxim,max7360.yaml +F: drivers/gpio/gpio-max7360.c +F: drivers/input/keyboard/max7360-keypad.c +F: drivers/input/misc/max7360-rotary.c +F: drivers/mfd/max7360.c +F: drivers/pinctrl/pinctrl-max7360.c +F: drivers/pwm/pwm-max7360.c +F: include/linux/mfd/max7360.h + MAXIM MAX77650 PMIC MFD DRIVER M: Bartosz Golaszewski L: linux-kernel@vger.kernel.org