From patchwork Wed Nov 9 06:55:43 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matt Ranostay X-Patchwork-Id: 13037205 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B40CEC4332F for ; Wed, 9 Nov 2022 06:58:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=gVWF40oUeICttkUooT328HcXUWnLL065wCDf3LRzKic=; b=PAMChhAVjqg2g0 dDj/CuKKcGLPZW4AvbRcRwsHOjgwMRnG8h5nURPs2zmcncTjww4YT4lP4nhnqid2kY85yC5MP7Ua0 9um+6cqRpM4IXnR/jjGXg1bGstVSeFUpENIZwITQ4O8f5R7NYJLsMbY/MYW8nYUf2F8+6W11q3Nn+ EfZaNUM/9P3wqfxFbCklDpckFYJ8EWluARg+AC3NAKJGeK0k7krHERd5nDKYhpRGAXKrEbZUXB5mL CDRtBO6o0wKzzi7m8qN9pQ0kVpoIvvvssvdSi7RCONO/l5kpb1b8pIgn77VowKmySAdQxxH1HtdxT DxcMd7jE5o60vcvxRsGw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1osf1O-00BRQR-8O; Wed, 09 Nov 2022 06:57:14 +0000 Received: from fllv0016.ext.ti.com ([198.47.19.142]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1osf0d-00BQ9p-OE for linux-arm-kernel@lists.infradead.org; Wed, 09 Nov 2022 06:56:29 +0000 Received: from fllv0034.itg.ti.com ([10.64.40.246]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 2A96uEMj106623; Wed, 9 Nov 2022 00:56:14 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1667976974; bh=3aOCoqxf65TlmrWhKMuEUXu7+vkeJELw89gYY75D+yg=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=K/g0rbIjZY9eSuHAqLtiv7r/Hdg2FkQf+ibjQWMHKFKcKnHXDHjQLHvA8PTDNq8V4 m7eIQWvO9UB2Qs3uz2/+3iCANvtM3MXyUyeOohQAxDqPUjebVJUu/s5fjKXC+j6M60 pWevSI4ytFNsW3ETduRXxaYkj5+1FFDHHZh8GxPw= Received: from DFLE114.ent.ti.com (dfle114.ent.ti.com [10.64.6.35]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 2A96uEuE121959 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 9 Nov 2022 00:56:14 -0600 Received: from DFLE107.ent.ti.com (10.64.6.28) by DFLE114.ent.ti.com (10.64.6.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.6; Wed, 9 Nov 2022 00:56:13 -0600 Received: from lelv0326.itg.ti.com (10.180.67.84) by DFLE107.ent.ti.com (10.64.6.28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.6 via Frontend Transport; Wed, 9 Nov 2022 00:56:13 -0600 Received: from localhost (ileaxei01-snat.itg.ti.com [10.180.69.5]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id 2A96uAEE030003; Wed, 9 Nov 2022 00:56:12 -0600 From: Matt Ranostay To: , , , , , , , , CC: , , , , Matt Ranostay , Keerthy Subject: [PATCH v3 4/7] gpio: tps6594x: add GPIO support for TPS6594x PMIC Date: Tue, 8 Nov 2022 22:55:43 -0800 Message-ID: <20221109065546.24912-5-mranostay@ti.com> X-Mailer: git-send-email 2.38.GIT In-Reply-To: <20221109065546.24912-1-mranostay@ti.com> References: <20221109065546.24912-1-mranostay@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221108_225627_914883_9282F0FD X-CRM114-Status: GOOD ( 20.93 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add support for TPS6594X PMICs GPIO interface that has 11 that can be configured as input or outputs. Tested-by: Keerthy Signed-off-by: Matt Ranostay --- drivers/gpio/Kconfig | 7 ++ drivers/gpio/Makefile | 1 + drivers/gpio/gpio-tps6594x.c | 142 +++++++++++++++++++++++++++++++++++ include/linux/mfd/tps6594x.h | 6 ++ 4 files changed, 156 insertions(+) create mode 100644 drivers/gpio/gpio-tps6594x.c diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 8c756cb29214..0225e6bddf0a 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -1405,6 +1405,13 @@ config GPIO_TPS65912 help This driver supports TPS65912 GPIO chip. +config GPIO_TPS6594X + tristate "TI TPS6594X GPIO driver" + depends on MFD_TPS6594X + help + Select this option to enable GPIO driver for the TPS6954X + PMIC chip family. There are 11 GPIOs that can be configured. + config GPIO_TPS68470 tristate "TPS68470 GPIO" depends on INTEL_SKL_INT3472 diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile index 8629e9eaf79e..e67a9b787b09 100644 --- a/drivers/gpio/Makefile +++ b/drivers/gpio/Makefile @@ -158,6 +158,7 @@ obj-$(CONFIG_GPIO_TPS65218) += gpio-tps65218.o obj-$(CONFIG_GPIO_TPS6586X) += gpio-tps6586x.o obj-$(CONFIG_GPIO_TPS65910) += gpio-tps65910.o obj-$(CONFIG_GPIO_TPS65912) += gpio-tps65912.o +obj-$(CONFIG_GPIO_TPS6594X) += gpio-tps6594x.o obj-$(CONFIG_GPIO_TPS68470) += gpio-tps68470.o obj-$(CONFIG_GPIO_TQMX86) += gpio-tqmx86.o obj-$(CONFIG_GPIO_TS4800) += gpio-ts4800.o diff --git a/drivers/gpio/gpio-tps6594x.c b/drivers/gpio/gpio-tps6594x.c new file mode 100644 index 000000000000..f530ac17f73f --- /dev/null +++ b/drivers/gpio/gpio-tps6594x.c @@ -0,0 +1,142 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * GPIO driver for TI TPS6594x PMICs + * + * Copyright (C) 2022 Texas Instruments Incorporated - http://www.ti.com/ + */ + +#include +#include +#include +#include + +#include +#include + +#define GPIO_CFG_MASK BIT(0) +#define NGPIOS_PER_REG 8 + +struct tps6594x_gpio { + struct gpio_chip gpio_chip; + struct tps6594x *tps; +}; + +static int tps6594x_gpio_get_direction(struct gpio_chip *gc, unsigned int offset) +{ + struct tps6594x_gpio *gpio = gpiochip_get_data(gc); + int ret, val; + + ret = regmap_read(gpio->tps->regmap, TPS6594X_GPIO1_CONF + offset, &val); + if (ret) + return ret; + + if (val & GPIO_CFG_MASK) + return GPIO_LINE_DIRECTION_OUT; + + return GPIO_LINE_DIRECTION_IN; +} + +static int tps6594x_gpio_direction_input(struct gpio_chip *gc, unsigned int offset) +{ + struct tps6594x_gpio *gpio = gpiochip_get_data(gc); + + return regmap_update_bits(gpio->tps->regmap, TPS6594X_GPIO1_CONF + offset, + GPIO_CFG_MASK, 0); +} + +static int tps6594x_gpio_direction_output(struct gpio_chip *gc, unsigned int offset, int value) +{ + struct tps6594x_gpio *gpio = gpiochip_get_data(gc); + unsigned int reg = TPS6594X_GPIO_OUT_1, shift = offset; + + if (shift >= NGPIOS_PER_REG) { + reg = TPS6594X_GPIO_OUT_2; + shift -= NGPIOS_PER_REG; + } + + regmap_update_bits(gpio->tps->regmap, reg, BIT(shift), value ? BIT(shift) : 0); + + return regmap_update_bits(gpio->tps->regmap, TPS6594X_GPIO1_CONF + offset, + GPIO_CFG_MASK, GPIO_CFG_MASK); +} + +static int tps6594x_gpio_get(struct gpio_chip *gc, unsigned int offset) +{ + struct tps6594x_gpio *gpio = gpiochip_get_data(gc); + unsigned int reg = TPS6594X_GPIO_IN_1; + int ret, val; + + if (offset >= NGPIOS_PER_REG) { + reg = TPS6594X_GPIO_IN_2; + offset -= NGPIOS_PER_REG; + } + + ret = regmap_read(gpio->tps->regmap, reg, &val); + if (ret) + return ret; + + return !!(val & BIT(offset)); +} + +static void tps6594x_gpio_set(struct gpio_chip *gc, unsigned int offset, + int value) +{ + struct tps6594x_gpio *gpio = gpiochip_get_data(gc); + unsigned int reg = TPS6594X_GPIO_OUT_1; + + if (offset >= NGPIOS_PER_REG) { + reg = TPS6594X_GPIO_OUT_2; + offset -= NGPIOS_PER_REG; + } + + regmap_update_bits(gpio->tps->regmap, reg, BIT(offset), value ? BIT(offset) : 0); +} + +static const struct gpio_chip template_chip = { + .label = "tps6594x-gpio", + .owner = THIS_MODULE, + .get_direction = tps6594x_gpio_get_direction, + .direction_input = tps6594x_gpio_direction_input, + .direction_output = tps6594x_gpio_direction_output, + .get = tps6594x_gpio_get, + .set = tps6594x_gpio_set, + .base = -1, + .ngpio = 11, + .can_sleep = true, +}; + +static int tps6594x_gpio_probe(struct platform_device *pdev) +{ + struct tps6594x *tps = dev_get_drvdata(pdev->dev.parent); + struct tps6594x_gpio *gpio; + + gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL); + if (!gpio) + return -ENOMEM; + + gpio->tps = dev_get_drvdata(pdev->dev.parent); + gpio->gpio_chip = template_chip; + gpio->gpio_chip.parent = tps->dev; + + return devm_gpiochip_add_data(&pdev->dev, &gpio->gpio_chip, gpio); +} + +static const struct of_device_id of_tps6594x_gpio_match[] = { + { .compatible = "ti,tps6594x-gpio", }, + {}, +}; +MODULE_DEVICE_TABLE(of, of_tps6594x_gpio_match); + +static struct platform_driver tps6594x_gpio_driver = { + .driver = { + .name = "tps6594x-gpio", + .of_match_table = of_match_ptr(of_tps6594x_gpio_match), + }, + .probe = tps6594x_gpio_probe, +}; +module_platform_driver(tps6594x_gpio_driver); + +MODULE_ALIAS("platform:tps6594x-gpio"); +MODULE_AUTHOR("Matt Ranostay "); +MODULE_DESCRIPTION("TPS6594X GPIO driver"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/mfd/tps6594x.h b/include/linux/mfd/tps6594x.h index 5a6af0da9223..c2440f5f43d3 100644 --- a/include/linux/mfd/tps6594x.h +++ b/include/linux/mfd/tps6594x.h @@ -21,6 +21,12 @@ #define TPS6594X_FSM_I2C_TRIGGERS 0x85 #define TPS6594X_FSM_NSLEEP_TRIGGERS 0x86 +#define TPS6594X_GPIO1_CONF 0x31 +#define TPS6594X_GPIO_OUT_1 0x3d +#define TPS6594X_GPIO_OUT_2 0x3e +#define TPS6594X_GPIO_IN_1 0x3f +#define TPS6594X_GPIO_IN_2 0x40 + #define TPS6594X_RTC_SECONDS 0xb5 #define TPS6594X_RTC_MINUTES 0xb6 #define TPS6594X_RTC_HOURS 0xb7