From patchwork Thu May 11 14:09:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: jerome Neanne X-Patchwork-Id: 13237999 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2D95BC7EE26 for ; Thu, 11 May 2023 14:09:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237782AbjEKOJz (ORCPT ); Thu, 11 May 2023 10:09:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53366 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237929AbjEKOJv (ORCPT ); Thu, 11 May 2023 10:09:51 -0400 Received: from mail-ej1-x629.google.com (mail-ej1-x629.google.com [IPv6:2a00:1450:4864:20::629]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BEF375249 for ; Thu, 11 May 2023 07:09:48 -0700 (PDT) Received: by mail-ej1-x629.google.com with SMTP id a640c23a62f3a-94f4b911570so1366268266b.0 for ; Thu, 11 May 2023 07:09:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20221208.gappssmtp.com; s=20221208; t=1683814187; x=1686406187; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=rsUxuD9P6pMgbhaTeW+TI3fzJO5NOVWuaZZ85HyF2eY=; b=pDL3U0ukkH1nXvnLkTksNu0Ez24oz2mx4ZvhOJ46SUV0uRSD01cnmGnpSY/HVlT0CU GMs6dkCtNxHxZBaI6byaiwA4FZ3S7X6t5zyoipmYAKe0ZrMP0mTqAvtN8yPDGUpfF8q2 Vf3huTkoRn3+apfVIUEFbEje+GWu2m4uCQEHXMuk2ItV1+6MmTBmiEBcLogq7l4ywr/P 0AIilrwVen/JLhdg/L0TUfaA3moc+3+9fYGnLaZMhF6Hq5aFNTQRYaLt3N+wUL6HdTE7 pFMU4sIKsHZFdl6T6qI8eDIqXEhs3qfSbLtdVh93PdDjyQBM6Gv5QNOl9lgQFu5YElVv 4bSQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683814187; x=1686406187; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=rsUxuD9P6pMgbhaTeW+TI3fzJO5NOVWuaZZ85HyF2eY=; b=jHO3+Lwv+ElURLCgQdMMi78lQBwWc2yKLJuq/D2yoHh0/4mQ9GjQo3Rxcg1PmckjEY r+EGu8OuP1ighTjEH6qBchqch0ps9c90/6GPJcBZMDrJh3+0iOIzBWO2uzszfMqTpTni Z+LnuTto8RhOxwty5nurE05It+OAlUdvo1BEoOBwBMVgQSDpXIIQHu1MWXWWUSFIedEV ZgXcwvW8sFE5kt9o4QACqE5Z41ICFXjMWmBe839y3KNbtWT0rVgTpD7q7T7Ca/8t2cVJ OmSRIUE/W0wMiZRqvkqwD0koL1XO7QrSTQRr1yzskiBUloEKbV0RPhkPa94O+/trr0Qe ZyTQ== X-Gm-Message-State: AC+VfDzf1oMtzAYrg2UlqiQtCoAp3M1oBuD/LhTJBj9D5ESq4/cJfvPM Zp8tYWjSFNqxLmNzOuppOcnybA== X-Google-Smtp-Source: ACHHUZ7aryeRUKp0xP3QAXOXFL06r0QBsLoKVR4SvqkGpRz446B3n4/GU6n18jwaNcTxuc9geYR/gw== X-Received: by 2002:a17:907:3da3:b0:94e:f7d8:9b4d with SMTP id he35-20020a1709073da300b0094ef7d89b4dmr20631094ejc.12.1683814187248; Thu, 11 May 2023 07:09:47 -0700 (PDT) Received: from [127.0.1.1] (abordeaux-655-1-129-86.w90-5.abo.wanadoo.fr. [90.5.10.86]) by smtp.gmail.com with ESMTPSA id gx1-20020a1709068a4100b00965a0f30fbfsm4057624ejc.186.2023.05.11.07.09.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 May 2023 07:09:46 -0700 (PDT) From: Jerome Neanne Date: Thu, 11 May 2023 16:09:41 +0200 Subject: [PATCH v2 1/2] gpio: tps65219: add GPIO support for TPS65219 PMIC MIME-Version: 1.0 Message-Id: <20230511-tps65219-add-gpio-support-v2-1-60feb64d649a@baylibre.com> References: <20230511-tps65219-add-gpio-support-v2-0-60feb64d649a@baylibre.com> In-Reply-To: <20230511-tps65219-add-gpio-support-v2-0-60feb64d649a@baylibre.com> To: Linus Walleij , Bartosz Golaszewski , Tony Lindgren , Lee Jones Cc: linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-omap@vger.kernel.org, Jonathan Cormier , Jerome Neanne X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1683814185; l=8435; i=jneanne@baylibre.com; s=20230511; h=from:subject:message-id; bh=080Gcen/8t5aApK5fjcOxZCg/5WBbaGvhhU2VvGQyQc=; b=DMRL+ODNtPLl687YJ6ZOQeykUYOnvx2umVnquJMbJeI2WRzI9CsSr3jcvzKxd7MSAFxktcIoI oDWKRDrS+rADE4GqP0HpwTtNS8D221oXIRKf/tYE1o58SjpfavgwYjU X-Developer-Key: i=jneanne@baylibre.com; a=ed25519; pk=5rvbqNoG+28jQjC9/50ToY7TgKWf9rJukuCI8b6jkUo= Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org Add support for TPS65219 PMICs GPIO interface. 3 GPIO pins: - GPIO0 only is IO but input mode reserved for MULTI_DEVICE_ENABLE usage - GPIO1 and GPIO2 are Output only and referred as GPO1 and GPO2 in spec GPIO0 is statically configured as input or output prior to Linux boot. it is used for MULTI_DEVICE_ENABLE function. This setting is statically configured by NVM. GPIO0 can't be used as a generic GPIO (specification Table 8-34). It's either a GPO when MULTI_DEVICE_EN=0, or a GPI when MULTI_DEVICE_EN=1. Datasheet describes specific usage for non standard GPIO. Link: https://www.ti.com/lit/ds/symlink/tps65219.pdf Co-developed-by: Jonathan Cormier Signed-off-by: Jonathan Cormier Signed-off-by: Jerome Neanne --- MAINTAINERS | 1 + drivers/gpio/Kconfig | 17 +++++ drivers/gpio/Makefile | 1 + drivers/gpio/gpio-tps65219.c | 173 +++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 192 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index c0cde28c62c6..d912b7465e84 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -15398,6 +15398,7 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap.git F: arch/arm/configs/omap2plus_defconfig F: arch/arm/mach-omap2/ F: drivers/bus/ti-sysc.c +F: drivers/gpio/gpio-tps65219.c F: drivers/i2c/busses/i2c-omap.c F: drivers/irqchip/irq-omap-intc.c F: drivers/mfd/*omap*.c diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 5521f060d58e..f4e37881d01a 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -1440,6 +1440,23 @@ config GPIO_TPS65218 Select this option to enable GPIO driver for the TPS65218 chip family. +config GPIO_TPS65219 + tristate "TPS65219 GPIO" + depends on MFD_TPS65219 + default MFD_TPS65219 + help + Select this option to enable GPIO driver for the TPS65219 + chip family. + GPIO0 is statically configured as input or output prior to Linux boot. + it is used for MULTI_DEVICE_ENABLE function. + This setting is statically configured by NVM. + GPIO0 can't be used as a generic GPIO. + It's either a GPO when MULTI_DEVICE_EN=0, + or a GPI when MULTI_DEVICE_EN=1. + + This driver can also be built as a module. If so, the + module will be called gpio_tps65219. + config GPIO_TPS6586X bool "TPS6586X GPIO" depends on MFD_TPS6586X diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index 20036af3acb1..7843b16f5d59 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -160,6 +160,7 @@ obj-$(CONFIG_GPIO_TN48M_CPLD) += gpio-tn48m.o obj-$(CONFIG_GPIO_TPIC2810) += gpio-tpic2810.o obj-$(CONFIG_GPIO_TPS65086) += gpio-tps65086.o obj-$(CONFIG_GPIO_TPS65218) += gpio-tps65218.o +obj-$(CONFIG_GPIO_TPS65219) += gpio-tps65219.o obj-$(CONFIG_GPIO_TPS6586X) += gpio-tps6586x.o obj-$(CONFIG_GPIO_TPS65910) += gpio-tps65910.o obj-$(CONFIG_GPIO_TPS65912) += gpio-tps65912.o diff --git a/drivers/gpio/gpio-tps65219.c b/drivers/gpio/gpio-tps65219.c new file mode 100644 index 000000000000..42bbd142e4b6 --- /dev/null +++ b/drivers/gpio/gpio-tps65219.c @@ -0,0 +1,173 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * GPIO driver for TI TPS65219 PMICs + * + * Copyright (C) 2022 Texas Instruments Incorporated - http://www.ti.com/ + */ + +#include +#include +#include + +#include +#include + +#define TPS65219_GPIO0_DIR_MASK BIT(3) +#define TPS65219_GPIO0_OFFSET 2 +#define TPS65219_GPIO0_IDX 0 +#define TPS65219_GPIO_DIR_IN 1 +#define TPS65219_GPIO_DIR_OUT 0 + +struct tps65219_gpio { + struct gpio_chip gpio_chip; + struct tps65219 *tps; +}; + +static int tps65219_gpio_get_direction(struct gpio_chip *gc, unsigned int offset) +{ + struct tps65219_gpio *gpio = gpiochip_get_data(gc); + int ret, val; + + if (offset != TPS65219_GPIO0_IDX) + return GPIO_LINE_DIRECTION_OUT; + + ret = regmap_read(gpio->tps->regmap, TPS65219_REG_MFP_1_CONFIG, &val); + if (ret) + return ret; + + return !!(val & TPS65219_GPIO0_DIR_MASK); +} + +static int tps65219_gpio_get(struct gpio_chip *gc, unsigned int offset) +{ + struct tps65219_gpio *gpio = gpiochip_get_data(gc); + int ret, val; + + if (offset != TPS65219_GPIO0_IDX) { + dev_err(gpio->tps->dev, + "GPIO%d is output only, cannot get\n", + offset); + return -EOPNOTSUPP; + } + + ret = regmap_read(gpio->tps->regmap, TPS65219_REG_MFP_CTRL, &val); + if (ret) + return ret; + dev_warn(gpio->tps->dev, + "GPIO%d = %d, used for MULTI_DEVICE_ENABLE, not as standard GPIO\n", + offset, !!(val & BIT(TPS65219_MFP_GPIO_STATUS_MASK))); + + /* depends on NVM config return error if dir output else the GPIO0 status bit */ + if (tps65219_gpio_get_direction(gc, offset) == TPS65219_GPIO_DIR_OUT) + return -EOPNOTSUPP; + return !!(val & BIT(TPS65219_MFP_GPIO_STATUS_MASK)); +} + +static void tps65219_gpio_set(struct gpio_chip *gc, unsigned int offset, + int value) +{ + struct tps65219_gpio *gpio = gpiochip_get_data(gc); + int v, mask, bit; + + bit = (offset == TPS65219_GPIO0_IDX) ? TPS65219_GPIO0_OFFSET : offset - 1; + + mask = BIT(bit); + v = value ? mask : 0; + + regmap_update_bits(gpio->tps->regmap, + TPS65219_REG_GENERAL_CONFIG, + mask, v); +} + +static int tps65219_gpio_change_direction(struct gpio_chip *gc, unsigned int offset, + unsigned int direction) +{ + struct tps65219_gpio *gpio = gpiochip_get_data(gc); + + /* Documentation is stating that GPIO0 direction must not be changed in Linux: + * Table 8-34. MFP_1_CONFIG(3): MULTI_DEVICE_ENABLE, + * Should only be changed in INITIALIZE state (prior to ON Request). + * Set statically by NVM, changing direction in application can cause a hang. + * Below can be used for test purpose only: + */ + +#if 0 + int ret = regmap_update_bits(gpio->tps->regmap, TPS65219_REG_MFP_1_CONFIG, + TPS65219_GPIO0_DIR_MASK, direction); + if (ret) + return ret; +#endif + dev_err(gpio->tps->dev, + "GPIO%d direction set by NVM, change to %u failed, not allowed by specification\n", + offset, direction); + return -EOPNOTSUPP; +} + +static int tps65219_gpio_direction_input(struct gpio_chip *gc, unsigned int offset) +{ + struct tps65219_gpio *gpio = gpiochip_get_data(gc); + + if (offset != TPS65219_GPIO0_IDX) { + dev_err(gpio->tps->dev, + "GPIO%d is output only, cannot change to input\n", + offset); + return -EOPNOTSUPP; + } + if (tps65219_gpio_get_direction(gc, offset) == TPS65219_GPIO_DIR_IN) + return 0; + return tps65219_gpio_change_direction(gc, offset, TPS65219_GPIO_DIR_IN); +} + +static int tps65219_gpio_direction_output(struct gpio_chip *gc, unsigned int offset, + int value) +{ + tps65219_gpio_set(gc, offset, value); + if (offset != TPS65219_GPIO0_IDX) + return 0; + + if (tps65219_gpio_get_direction(gc, offset) == TPS65219_GPIO_DIR_OUT) + return 0; + return tps65219_gpio_change_direction(gc, offset, TPS65219_GPIO_DIR_OUT); +} + +static const struct gpio_chip tps65219_gpio_chip = { + .label = "tps65219-gpio", + .owner = THIS_MODULE, + .get_direction = tps65219_gpio_get_direction, + .direction_input = tps65219_gpio_direction_input, + .direction_output = tps65219_gpio_direction_output, + .get = tps65219_gpio_get, + .set = tps65219_gpio_set, + .base = -1, + .ngpio = 3, + .can_sleep = true, +}; + +static int tps65219_gpio_probe(struct platform_device *pdev) +{ + struct tps65219 *tps = dev_get_drvdata(pdev->dev.parent); + struct tps65219_gpio *gpio; + + gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL); + if (!gpio) + return -ENOMEM; + + gpio->tps = tps; + gpio->gpio_chip = tps65219_gpio_chip; + gpio->gpio_chip.parent = tps->dev; + + return devm_gpiochip_add_data(&pdev->dev, &gpio->gpio_chip, gpio); +} + +static struct platform_driver tps65219_gpio_driver = { + .driver = { + .name = "tps65219-gpio", + }, + .probe = tps65219_gpio_probe, +}; +module_platform_driver(tps65219_gpio_driver); + +MODULE_ALIAS("platform:tps65219-gpio"); +MODULE_AUTHOR("Jonathan Cormier "); +MODULE_DESCRIPTION("TPS65219 GPIO driver"); +MODULE_LICENSE("GPL"); From patchwork Thu May 11 14:09:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: jerome Neanne X-Patchwork-Id: 13238000 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2AD8DC7EE2D for ; Thu, 11 May 2023 14:09:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238233AbjEKOJ4 (ORCPT ); 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[90.5.10.86]) by smtp.gmail.com with ESMTPSA id gx1-20020a1709068a4100b00965a0f30fbfsm4057624ejc.186.2023.05.11.07.09.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 May 2023 07:09:47 -0700 (PDT) From: Jerome Neanne Date: Thu, 11 May 2023 16:09:42 +0200 Subject: [PATCH v2 2/2] mfd: tps65219: Add gpio cell instance MIME-Version: 1.0 Message-Id: <20230511-tps65219-add-gpio-support-v2-2-60feb64d649a@baylibre.com> References: <20230511-tps65219-add-gpio-support-v2-0-60feb64d649a@baylibre.com> In-Reply-To: <20230511-tps65219-add-gpio-support-v2-0-60feb64d649a@baylibre.com> To: Linus Walleij , Bartosz Golaszewski , Tony Lindgren , Lee Jones Cc: linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-omap@vger.kernel.org, Jonathan Cormier , Jerome Neanne X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1683814185; l=866; i=jneanne@baylibre.com; s=20230511; h=from:subject:message-id; bh=h/znsSZb4ku3m0TBnEL/O7SKys/mM4RedsLJul+D6qw=; b=F26UalLmLmw3Kr0fdb9s4cii+oNyMXopifxP1O3Ubdq2BKN7sl+gPNglcBjH9mpk3VOgx1Gvm dkRE/SpG25FC2ZYT4To06ucNDtw76hse4kNrGP2L7a81yW/oP57e0xT X-Developer-Key: i=jneanne@baylibre.com; a=ed25519; pk=5rvbqNoG+28jQjC9/50ToY7TgKWf9rJukuCI8b6jkUo= Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org tps65219 PMIC GPIOs are exposed in a standard way: gpiodetect gpiochip0 [tps65219-gpio] (3 lines) Co-developed-by: Jonathan Cormier Signed-off-by: Jonathan Cormier Signed-off-by: Jerome Neanne Reviewed-by: Linus Walleij --- drivers/mfd/tps65219.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mfd/tps65219.c b/drivers/mfd/tps65219.c index 0e402fda206b..e1d090ba4258 100644 --- a/drivers/mfd/tps65219.c +++ b/drivers/mfd/tps65219.c @@ -106,7 +106,7 @@ static const struct mfd_cell tps65219_cells[] = { .resources = tps65219_regulator_resources, .num_resources = ARRAY_SIZE(tps65219_regulator_resources), }, - { .name = "tps65219-gpios", }, + { .name = "tps65219-gpio", }, }; static const struct mfd_cell tps65219_pwrbutton_cell = {