From patchwork Mon Jan 16 12:47:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 644767 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 B92B4C54EBE for ; Mon, 16 Jan 2023 12:46:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230254AbjAPMqh (ORCPT ); Mon, 16 Jan 2023 07:46:37 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37466 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230395AbjAPMqg (ORCPT ); Mon, 16 Jan 2023 07:46:36 -0500 Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 717138698; Mon, 16 Jan 2023 04:46:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1673873195; x=1705409195; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=cV2t2J41BPlMwIKrRYG/9Xa0hABR7bL6sMDaCR/ixl0=; b=L6rZGFZMWqLZpbJoBX59s1VCVfW55CjZNh/5zHu091TKy2JRRJR1vpyn AKpGOwnZJ3I7nLkh6UCi9ueZ5HbD7j8R5y+Ay9npUxDlRjQ4Jp3VKezBT jz9vizkqHxlvqtuUOZ4qnIZgRfZZyHV6F7UVIn2C1X/H1FttaGdPt2St9 88IwJ+wP8+NgmKfxkSGuNXhtXxDZvMDqBwezv8R0OoAYBNam5EH34N8HK 6zrO8TtsG6eiaiMf47FmA2Lx29wBe31Cn8qN5da/2RBBHm+ZZu9Hg0lBQ 6SLzOQ+WjU2Runjh/GsiLIwrGRZJ9juHy3cgSHJLmUih2g+AbHGKdhVtb Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10591"; a="308009850" X-IronPort-AV: E=Sophos;i="5.97,221,1669104000"; d="scan'208";a="308009850" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Jan 2023 04:46:34 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10591"; a="782895856" X-IronPort-AV: E=Sophos;i="5.97,221,1669104000"; d="scan'208";a="782895856" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga004.jf.intel.com with ESMTP; 16 Jan 2023 04:46:32 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id AC4061A3; Mon, 16 Jan 2023 14:47:06 +0200 (EET) From: Andy Shevchenko To: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Andy Shevchenko , linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org Cc: Linus Walleij , Bartosz Golaszewski Subject: [PATCH v1 1/3] gpio: pcf857x: Get rid of legacy platform data Date: Mon, 16 Jan 2023 14:47:02 +0200 Message-Id: <20230116124704.30470-1-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.39.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Platform data is a legacy interface to supply device properties to the driver. In this case we don't have in-kernel users for it. Moreover it uses plain GPIO numbers which is no-no for a new code. Just remove it for good. Signed-off-by: Andy Shevchenko --- drivers/gpio/gpio-pcf857x.c | 34 ++------------------ include/linux/platform_data/pcf857x.h | 45 --------------------------- 2 files changed, 2 insertions(+), 77 deletions(-) delete mode 100644 include/linux/platform_data/pcf857x.h diff --git a/drivers/gpio/gpio-pcf857x.c b/drivers/gpio/gpio-pcf857x.c index d9db878802b7..dfa15444a24a 100644 --- a/drivers/gpio/gpio-pcf857x.c +++ b/drivers/gpio/gpio-pcf857x.c @@ -7,7 +7,6 @@ #include #include -#include #include #include #include @@ -18,7 +17,6 @@ #include #include - static const struct i2c_device_id pcf857x_id[] = { { "pcf8574", 8 }, { "pcf8574a", 8 }, @@ -277,18 +275,12 @@ static const struct irq_chip pcf857x_irq_chip = { static int pcf857x_probe(struct i2c_client *client) { const struct i2c_device_id *id = i2c_client_get_device_id(client); - struct pcf857x_platform_data *pdata = dev_get_platdata(&client->dev); struct device_node *np = client->dev.of_node; struct pcf857x *gpio; unsigned int n_latch = 0; int status; - if (IS_ENABLED(CONFIG_OF) && np) - of_property_read_u32(np, "lines-initial-states", &n_latch); - else if (pdata) - n_latch = pdata->n_latch; - else - dev_dbg(&client->dev, "no platform data\n"); + of_property_read_u32(np, "lines-initial-states", &n_latch); /* Allocate, initialize, and register this gpio_chip. */ gpio = devm_kzalloc(&client->dev, sizeof(*gpio), GFP_KERNEL); @@ -297,7 +289,7 @@ static int pcf857x_probe(struct i2c_client *client) mutex_init(&gpio->lock); - gpio->chip.base = pdata ? pdata->gpio_base : -1; + gpio->chip.base = -1; gpio->chip.can_sleep = true; gpio->chip.parent = &client->dev; gpio->chip.owner = THIS_MODULE; @@ -406,17 +398,6 @@ static int pcf857x_probe(struct i2c_client *client) if (status < 0) goto fail; - /* Let platform code set up the GPIOs and their users. - * Now is the first time anyone could use them. - */ - if (pdata && pdata->setup) { - status = pdata->setup(client, - gpio->chip.base, gpio->chip.ngpio, - pdata->context); - if (status < 0) - dev_warn(&client->dev, "setup --> %d\n", status); - } - dev_info(&client->dev, "probed\n"); return 0; @@ -428,16 +409,6 @@ static int pcf857x_probe(struct i2c_client *client) return status; } -static void pcf857x_remove(struct i2c_client *client) -{ - struct pcf857x_platform_data *pdata = dev_get_platdata(&client->dev); - struct pcf857x *gpio = i2c_get_clientdata(client); - - if (pdata && pdata->teardown) - pdata->teardown(client, gpio->chip.base, gpio->chip.ngpio, - pdata->context); -} - static void pcf857x_shutdown(struct i2c_client *client) { struct pcf857x *gpio = i2c_get_clientdata(client); @@ -452,7 +423,6 @@ static struct i2c_driver pcf857x_driver = { .of_match_table = of_match_ptr(pcf857x_of_table), }, .probe_new = pcf857x_probe, - .remove = pcf857x_remove, .shutdown = pcf857x_shutdown, .id_table = pcf857x_id, }; diff --git a/include/linux/platform_data/pcf857x.h b/include/linux/platform_data/pcf857x.h deleted file mode 100644 index 01d0a3ea3aef..000000000000 --- a/include/linux/platform_data/pcf857x.h +++ /dev/null @@ -1,45 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef __LINUX_PCF857X_H -#define __LINUX_PCF857X_H - -/** - * struct pcf857x_platform_data - data to set up pcf857x driver - * @gpio_base: number of the chip's first GPIO - * @n_latch: optional bit-inverse of initial register value; if - * you leave this initialized to zero the driver will act - * like the chip was just reset - * @setup: optional callback issued once the GPIOs are valid - * @teardown: optional callback issued before the GPIOs are invalidated - * @context: optional parameter passed to setup() and teardown() - * - * In addition to the I2C_BOARD_INFO() state appropriate to each chip, - * the i2c_board_info used with the pcf875x driver must provide its - * platform_data (pointer to one of these structures) with at least - * the gpio_base value initialized. - * - * The @setup callback may be used with the kind of board-specific glue - * which hands the (now-valid) GPIOs to other drivers, or which puts - * devices in their initial states using these GPIOs. - * - * These GPIO chips are only "quasi-bidirectional"; read the chip specs - * to understand the behavior. They don't have separate registers to - * record which pins are used for input or output, record which output - * values are driven, or provide access to input values. That must be - * inferred by reading the chip's value and knowing the last value written - * to it. If you leave n_latch initialized to zero, that last written - * value is presumed to be all ones (as if the chip were just reset). - */ -struct pcf857x_platform_data { - unsigned gpio_base; - unsigned n_latch; - - int (*setup)(struct i2c_client *client, - int gpio, unsigned ngpio, - void *context); - void (*teardown)(struct i2c_client *client, - int gpio, unsigned ngpio, - void *context); - void *context; -}; - -#endif /* __LINUX_PCF857X_H */