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[90.63.244.31]) by smtp.gmail.com with ESMTPSA id m6-20020a7bce06000000b003f6050d35c9sm16409978wmc.20.2023.05.30.01.00.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 May 2023 01:00:24 -0700 (PDT) From: Jerome Neanne Date: Tue, 30 May 2023 09:59:59 +0200 Subject: [PATCH v4 1/2] gpio: tps65219: add GPIO support for TPS65219 PMIC MIME-Version: 1.0 Message-Id: <20230511-tps65219-add-gpio-support-v4-1-b5d6a764d722@baylibre.com> References: <20230511-tps65219-add-gpio-support-v4-0-b5d6a764d722@baylibre.com> In-Reply-To: <20230511-tps65219-add-gpio-support-v4-0-b5d6a764d722@baylibre.com> To: Linus Walleij , Bartosz Golaszewski , Tony Lindgren , Lee Jones Cc: khilman@baylibre.com, msp@baylibre.com, francesco@dolcini.it, 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=1685433622; l=8728; i=jneanne@baylibre.com; s=20230511; h=from:subject:message-id; bh=8lkoF2Q6EcexrSLp/t/MhnTILTabGq5WU9fo1gYJj6U=; b=o6xvJEIXduMBNuzlMSbn/+ju+x0cpAqHGUOkn2bgKS0pRXudK1eTX321Mkh55Mw2NlOIZ6WwJ tiN4q176AJvB59LE0mPZYR+0wqI54SHOaSDs662Pg3OSZxnhOc9KlvI X-Developer-Key: i=jneanne@baylibre.com; a=ed25519; pk=5rvbqNoG+28jQjC9/50ToY7TgKWf9rJukuCI8b6jkUo= X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1767306845421383772?= X-GMAIL-MSGID: =?utf-8?q?1767306845421383772?= 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 Reviewed-by: Linus Walleij --- MAINTAINERS | 1 + drivers/gpio/Kconfig | 15 ++++ drivers/gpio/Makefile | 1 + drivers/gpio/gpio-tps65219.c | 181 +++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 198 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..337803b3a022 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -1440,6 +1440,21 @@ 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..0c6ba7021a26 --- /dev/null +++ b/drivers/gpio/gpio-tps65219.c @@ -0,0 +1,181 @@ +// 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 +#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); + struct device *dev = gpio->tps->dev; + int ret, val; + + if (offset != TPS65219_GPIO0_IDX) { + dev_err(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; + + ret = !!(val & BIT(TPS65219_MFP_GPIO_STATUS_MASK)); + dev_warn(dev, "GPIO%d = %d, MULTI_DEVICE_ENABLE, not a standard GPIO\n", offset, ret); + + /* 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 ret; +} + +static void tps65219_gpio_set(struct gpio_chip *gc, unsigned int offset, int value) +{ + struct tps65219_gpio *gpio = gpiochip_get_data(gc); + struct device *dev = gpio->tps->dev; + int v, mask, bit; + + bit = (offset == TPS65219_GPIO0_IDX) ? TPS65219_GPIO0_OFFSET : offset - 1; + + mask = BIT(bit); + v = value ? mask : 0; + + if (regmap_update_bits(gpio->tps->regmap, TPS65219_REG_GENERAL_CONFIG, mask, v)) + dev_err(dev, "GPIO%d, set to value %d failed.\n", offset, value); +} + +static int tps65219_gpio_change_direction(struct gpio_chip *gc, unsigned int offset, + unsigned int direction) +{ + struct tps65219_gpio *gpio = gpiochip_get_data(gc); + struct device *dev = gpio->tps->dev; + + /* + * 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 (IS_ENABLED(CONFIG_DEBUG_GPIO)) { + int ret = regmap_update_bits(gpio->tps->regmap, TPS65219_REG_MFP_1_CONFIG, + TPS65219_GPIO0_DIR_MASK, direction); + if (ret) { + dev_err(dev, + "GPIO DEBUG enabled: Fail to change direction to %u for GPIO%d.\n", + direction, offset); + return ret; + } + } + + dev_err(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); + struct device *dev = gpio->tps->dev; + + if (offset != TPS65219_GPIO0_IDX) { + dev_err(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_template_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_template_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 Tue May 30 08:00:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: jerome Neanne X-Patchwork-Id: 100656 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:994d:0:b0:3d9:f83d:47d9 with SMTP id k13csp2018976vqr; Tue, 30 May 2023 01:21:59 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ4W4luodyYr6dApzwn3BfzhP1VsJkzL0Faa/A9DGLm7Eez3uwo0IUY7Fa2RysH7dPYjo0xW X-Received: by 2002:a05:6a00:1ca4:b0:64d:2db5:f792 with SMTP id y36-20020a056a001ca400b0064d2db5f792mr1982338pfw.2.1685434919515; Tue, 30 May 2023 01:21:59 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1685434919; cv=none; d=google.com; s=arc-20160816; b=cbbwi9l2uV3KkPpPNaXoTiolNnOtwqm/w7g+gkaOfj/RUv61w6yuJbnm2rmuRJ+tUM 7gN4sfOJhgpYKV0greGJD9WqFJZCk5YOqV3AVT3Py8Hw6ACmg2YTaDrU0rkeEg44gaDg APKRXp9QaNndKgjM+dJUcquTRYiYOCENVh5iE0MjfasSjUXOa43V7Uc9QTtlecHO6GvP wAWeUBq7nMxmVjoxyzqG4JYJ1odqTlcSUq5WlFUpMyn7NJKFnU7ivQmvNX01FRS/ikDR 4WDrRJvCsjEfeSGd3jDTaYehaLzsH9ecCRav1d9XPTULPclELhStGo4gZGZaN2izpFcA /LhA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:cc:to:in-reply-to:references:message-id :content-transfer-encoding:mime-version:subject:date:from :dkim-signature; bh=Oi5cyxzC3+NP4WFp104cxanaFNMsvwaBhA2yhJz87ao=; b=NhaLYFcIj5Nyx41+9718Yj6qQrF+NB7gY2UL6Eks7tWM7QtbwyEJEQ2gVTNWP0WEm6 DoAARn0bkRL9P00h8ENtfm1uDp1JtUVvG1nZJzzY4hvuoli/XKSk1Vt2IIHD4kztXJrB ra3coyCWiS7TUBl+aSB7B2vORLG8yylANX9HM+1qJERJyxtkOAPj2atnVN+BkwoNARXq wrfwqqdR8LP4DqivCyKWYKJkNnl7Q2lH8RPIV7mWs2l1FlwW9Kn/3EFHvXHjyl5rwup4 0o2sPpsGqzYu+y1LcRguzCddtelsyCVk1w7LqtaPu9Huap6iMimYXDa25LskogZ1p1PO bI3g== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@baylibre-com.20221208.gappssmtp.com header.s=20221208 header.b=FKNBr7OD; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. 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[90.63.244.31]) by smtp.gmail.com with ESMTPSA id m6-20020a7bce06000000b003f6050d35c9sm16409978wmc.20.2023.05.30.01.00.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 May 2023 01:00:25 -0700 (PDT) From: Jerome Neanne Date: Tue, 30 May 2023 10:00:00 +0200 Subject: [PATCH v4 2/2] mfd: tps65219: Add gpio cell instance MIME-Version: 1.0 Message-Id: <20230511-tps65219-add-gpio-support-v4-2-b5d6a764d722@baylibre.com> References: <20230511-tps65219-add-gpio-support-v4-0-b5d6a764d722@baylibre.com> In-Reply-To: <20230511-tps65219-add-gpio-support-v4-0-b5d6a764d722@baylibre.com> To: Linus Walleij , Bartosz Golaszewski , Tony Lindgren , Lee Jones Cc: khilman@baylibre.com, msp@baylibre.com, francesco@dolcini.it, 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=1685433622; l=1009; i=jneanne@baylibre.com; s=20230511; h=from:subject:message-id; bh=nMeCcxVhE7+un5EdrNfRU6JWVC4UNE7togljBBNu77I=; b=CpMbAoke2LTSOlEvyBOPwWQ/t8EJB7RkrlhYL58Ne/IDVV+v7WO9zYk1NSLbdr9YicrxGsimz r+eqMMZrvTbD7u+p+JvcHOis13q1EkFHBL6e9+RWoJSeiXecH2qcWjE X-Developer-Key: i=jneanne@baylibre.com; a=ed25519; pk=5rvbqNoG+28jQjC9/50ToY7TgKWf9rJukuCI8b6jkUo= X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1767306606323311013?= X-GMAIL-MSGID: =?utf-8?q?1767306606323311013?= tps65219 PMIC GPIOs are exposed in a standard way: gpiodetect gpiochip0 [tps65219-gpio] (3 lines) tps65219-gpios is incorrect cell name (plural): Changed to tps65219-gpio (singular) Co-developed-by: Jonathan Cormier Signed-off-by: Jonathan Cormier Reviewed-by: Linus Walleij Signed-off-by: Jerome Neanne --- 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 = {