From patchwork Fri Dec 2 16:27:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: William Breathitt Gray X-Patchwork-Id: 630728 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 48EB7C4321E for ; Fri, 2 Dec 2022 16:28:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234159AbiLBQ2G (ORCPT ); Fri, 2 Dec 2022 11:28:06 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43710 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234119AbiLBQ1b (ORCPT ); Fri, 2 Dec 2022 11:27:31 -0500 Received: from mail-qt1-x832.google.com (mail-qt1-x832.google.com [IPv6:2607:f8b0:4864:20::832]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 43387D11B for ; Fri, 2 Dec 2022 08:27:29 -0800 (PST) Received: by mail-qt1-x832.google.com with SMTP id a4so1995129qtm.11 for ; Fri, 02 Dec 2022 08:27:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=JVwqscrh+zjqG/ZfukKo8keg+szpeWy+C9UuL6rL5R4=; b=GNQMFw3IVBrZxWuDo2MS7jmEP2HXHWzNMZZn19+jhbPqk/YZ36Cz0q7hNFFhvokUnL W42uVjdVI5BLX4KiIMuBxsKIEFJuy0NHVZo/+hXNrqRPYg6Ltt/M0qk6f2vtS57dVj3R pjuGgkUlFlA1sGwnDjFYhadL8uLx62c0SLirU08imILEjLJWr4C67ulchV8iPdMD1Eg2 xS3ATRESbdYdL1QTbdA/k5woVrf3Nh8nOUGje+m5/g7gTcTaykLo+u1xBQhdFxGGoPCj dElmRPbKiHUaepWYupQluGEb4OnCO7cGYRcZcBp/yq96M0T3q1SB0M7BH1vF/DPO6SVN Iijw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=JVwqscrh+zjqG/ZfukKo8keg+szpeWy+C9UuL6rL5R4=; b=LE36yNc/SU8Maukv1nEXLXSR7yniD/HeTX6BV1Lmto9J65n136pyJG43uJ+0kuPhZL e2dGVUlA0hLzDyo1lc88ZOuFsfqrnHz8GOWzgCc1GMuxW01YZ0uKQlL1s8wtySV1WV1j hJmQxP88Iu++fq/+a1oNFYdrqwMdman9q8qXFFMN0dFHZ0Qh3sF6I5M0iwCkTy8kRogm hsdil+fWSpEHHQYE/zNqfUdRD0WdWzr9xxC0vFtspRjTkKQhhstv6kGjcNT9mQKAwHHC lE/ZaUvCuf+WLk60oZLc54qvZwT9uKnEdVg5/DuKgIdpfw8HyLC5vCFIApLj2HIvkQw1 zXlg== X-Gm-Message-State: ANoB5plbsdcHvwjBLDJtnwyNUb7xdjizi/UyWlqV1tu/mZ4n/Gn0JrFJ FvhLBdqhTl8np8Mt7j6RenQ2xw== X-Google-Smtp-Source: AA0mqf66Ffp92DU3hZ9EW6PqdDgVytipumz2Jq+L5AvlajYl9Rxt02V+2Ae+i4Vk3ry2mrfeADrN6w== X-Received: by 2002:ac8:4b55:0:b0:3a4:fcde:734b with SMTP id e21-20020ac84b55000000b003a4fcde734bmr67393401qts.238.1669998448864; Fri, 02 Dec 2022 08:27:28 -0800 (PST) Received: from fedora.attlocal.net (69-109-179-158.lightspeed.dybhfl.sbcglobal.net. [69.109.179.158]) by smtp.gmail.com with ESMTPSA id fp38-20020a05622a50a600b00343057845f7sm4391887qtb.20.2022.12.02.08.27.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Dec 2022 08:27:28 -0800 (PST) From: William Breathitt Gray To: linus.walleij@linaro.org, brgl@bgdev.pl Cc: andriy.shevchenko@linux.intel.com, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, michael@walle.cc, broonie@kernel.org, William Breathitt Gray Subject: [PATCH v4 7/9] gpio: 104-dio-48e: Migrate to regmap API Date: Fri, 2 Dec 2022 11:27:13 -0500 Message-Id: X-Mailer: git-send-email 2.38.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org The regmap API supports IO port accessors so we can take advantage of regmap abstractions rather than handling access to the device registers directly in the driver. The 104-dio-48e module is migrated to the new i8255 library interface leveraging the gpio-regmap API. Suggested-by: Andy Shevchenko Reviewed-by: Andy Shevchenko Signed-off-by: William Breathitt Gray --- drivers/gpio/gpio-104-dio-48e.c | 137 ++------------------------------ 1 file changed, 7 insertions(+), 130 deletions(-) diff --git a/drivers/gpio/gpio-104-dio-48e.c b/drivers/gpio/gpio-104-dio-48e.c index 4c3660d5dea5..31ae98a277a4 100644 --- a/drivers/gpio/gpio-104-dio-48e.c +++ b/drivers/gpio/gpio-104-dio-48e.c @@ -9,7 +9,6 @@ #include #include #include -#include #include #include #include @@ -42,90 +41,6 @@ MODULE_PARM_DESC(irq, "ACCES 104-DIO-48E interrupt line numbers"); #define DIO48E_NUM_PPI 2 -/** - * struct dio48e_reg - device register structure - * @ppi: Programmable Peripheral Interface groups - */ -struct dio48e_reg { - struct i8255 ppi[DIO48E_NUM_PPI]; -}; - -/** - * struct dio48e_gpio - GPIO device private data structure - * @chip: instance of the gpio_chip - * @ppi_state: PPI device states - * @reg: I/O address offset for the device registers - */ -struct dio48e_gpio { - struct gpio_chip chip; - struct i8255_state ppi_state[DIO48E_NUM_PPI]; - struct dio48e_reg __iomem *reg; -}; - -static int dio48e_gpio_get_direction(struct gpio_chip *chip, unsigned int offset) -{ - struct dio48e_gpio *const dio48egpio = gpiochip_get_data(chip); - - if (i8255_get_direction(dio48egpio->ppi_state, offset)) - return GPIO_LINE_DIRECTION_IN; - - return GPIO_LINE_DIRECTION_OUT; -} - -static int dio48e_gpio_direction_input(struct gpio_chip *chip, unsigned int offset) -{ - struct dio48e_gpio *const dio48egpio = gpiochip_get_data(chip); - - i8255_direction_input(dio48egpio->reg->ppi, dio48egpio->ppi_state, - offset); - - return 0; -} - -static int dio48e_gpio_direction_output(struct gpio_chip *chip, unsigned int offset, - int value) -{ - struct dio48e_gpio *const dio48egpio = gpiochip_get_data(chip); - - i8255_direction_output(dio48egpio->reg->ppi, dio48egpio->ppi_state, - offset, value); - - return 0; -} - -static int dio48e_gpio_get(struct gpio_chip *chip, unsigned int offset) -{ - struct dio48e_gpio *const dio48egpio = gpiochip_get_data(chip); - - return i8255_get(dio48egpio->reg->ppi, offset); -} - -static int dio48e_gpio_get_multiple(struct gpio_chip *chip, unsigned long *mask, - unsigned long *bits) -{ - struct dio48e_gpio *const dio48egpio = gpiochip_get_data(chip); - - i8255_get_multiple(dio48egpio->reg->ppi, mask, bits, chip->ngpio); - - return 0; -} - -static void dio48e_gpio_set(struct gpio_chip *chip, unsigned int offset, int value) -{ - struct dio48e_gpio *const dio48egpio = gpiochip_get_data(chip); - - i8255_set(dio48egpio->reg->ppi, dio48egpio->ppi_state, offset, value); -} - -static void dio48e_gpio_set_multiple(struct gpio_chip *chip, - unsigned long *mask, unsigned long *bits) -{ - struct dio48e_gpio *const dio48egpio = gpiochip_get_data(chip); - - i8255_set_multiple(dio48egpio->reg->ppi, dio48egpio->ppi_state, mask, - bits, chip->ngpio); -} - static const struct regmap_range dio48e_wr_ranges[] = { regmap_reg_range(0x0, 0x9), regmap_reg_range(0xB, 0xB), regmap_reg_range(0xD, 0xD), regmap_reg_range(0xF, 0xF), @@ -240,25 +155,10 @@ static int dio48e_irq_init_hw(struct regmap *const map) return regmap_read(map, DIO48E_DISABLE_INTERRUPT, &val); } -static void dio48e_init_ppi(struct i8255 __iomem *const ppi, - struct i8255_state *const ppi_state) -{ - const unsigned long ngpio = 24; - const unsigned long mask = GENMASK(ngpio - 1, 0); - const unsigned long bits = 0; - unsigned long i; - - /* Initialize all GPIO to output 0 */ - for (i = 0; i < DIO48E_NUM_PPI; i++) { - i8255_mode0_output(&ppi[i]); - i8255_set_multiple(&ppi[i], &ppi_state[i], &mask, &bits, ngpio); - } -} - static int dio48e_probe(struct device *dev, unsigned int id) { - struct dio48e_gpio *dio48egpio; const char *const name = dev_name(dev); + struct i8255_regmap_config config = {}; void __iomem *regs; struct regmap *map; int err; @@ -266,10 +166,6 @@ static int dio48e_probe(struct device *dev, unsigned int id) unsigned int irq_mask; struct regmap_irq_chip_data *chip_data; - dio48egpio = devm_kzalloc(dev, sizeof(*dio48egpio), GFP_KERNEL); - if (!dio48egpio) - return -ENOMEM; - if (!devm_request_region(dev, base[id], DIO48E_EXTENT, name)) { dev_err(dev, "Unable to lock port addresses (0x%X-0x%X)\n", base[id], base[id] + DIO48E_EXTENT); @@ -279,7 +175,6 @@ static int dio48e_probe(struct device *dev, unsigned int id) regs = devm_ioport_map(dev, base[id], DIO48E_EXTENT); if (!regs) return -ENOMEM; - dio48egpio->reg = regs; map = devm_regmap_init_mmio(dev, regs, &dio48e_regmap_config); if (IS_ERR(map)) @@ -314,31 +209,13 @@ static int dio48e_probe(struct device *dev, unsigned int id) if (err) return dev_err_probe(dev, err, "IRQ registration failed\n"); - dio48egpio->chip.label = name; - dio48egpio->chip.parent = dev; - dio48egpio->chip.owner = THIS_MODULE; - dio48egpio->chip.base = -1; - dio48egpio->chip.ngpio = DIO48E_NGPIO; - dio48egpio->chip.names = dio48e_names; - dio48egpio->chip.get_direction = dio48e_gpio_get_direction; - dio48egpio->chip.direction_input = dio48e_gpio_direction_input; - dio48egpio->chip.direction_output = dio48e_gpio_direction_output; - dio48egpio->chip.get = dio48e_gpio_get; - dio48egpio->chip.get_multiple = dio48e_gpio_get_multiple; - dio48egpio->chip.set = dio48e_gpio_set; - dio48egpio->chip.set_multiple = dio48e_gpio_set_multiple; - - i8255_state_init(dio48egpio->ppi_state, DIO48E_NUM_PPI); - dio48e_init_ppi(dio48egpio->reg->ppi, dio48egpio->ppi_state); - - err = devm_gpiochip_add_data(dev, &dio48egpio->chip, dio48egpio); - if (err) { - dev_err(dev, "GPIO registering failed (%d)\n", err); - return err; - } + config.parent = dev; + config.map = map; + config.num_ppi = DIO48E_NUM_PPI; + config.names = dio48e_names; + config.domain = regmap_irq_get_domain(chip_data); - return gpiochip_irqchip_add_domain(&dio48egpio->chip, - regmap_irq_get_domain(chip_data)); + return devm_i8255_regmap_register(dev, &config); } static struct isa_driver dio48e_driver = {