From patchwork Mon Dec 9 13:09:19 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 1206233 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.intel.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 47Wk7R45P8z9sR7 for ; Tue, 10 Dec 2019 00:09:55 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727655AbfLINJi (ORCPT ); Mon, 9 Dec 2019 08:09:38 -0500 Received: from mga05.intel.com ([192.55.52.43]:62113 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727610AbfLINJe (ORCPT ); Mon, 9 Dec 2019 08:09:34 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 09 Dec 2019 05:09:34 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,294,1571727600"; d="scan'208";a="215088566" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga006.jf.intel.com with ESMTP; 09 Dec 2019 05:09:32 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id E682E94D; Mon, 9 Dec 2019 15:09:27 +0200 (EET) From: Andy Shevchenko To: Linus Walleij , Bartosz Golaszewski , linux-gpio@vger.kernel.org, Mika Westerberg Cc: Andy Shevchenko Subject: [PATCH v2 17/24] pinctrl: lynxpoint: Implement intel_gpio_get_direction callback Date: Mon, 9 Dec 2019 15:09:19 +0200 Message-Id: <20191209130926.86483-18-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191209130926.86483-1-andriy.shevchenko@linux.intel.com> References: <20191209130926.86483-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Allows querying GPIO direction from the pad config register. If the pad is not in GPIO mode, return an error. Signed-off-by: Andy Shevchenko --- drivers/pinctrl/intel/pinctrl-lynxpoint.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/pinctrl/intel/pinctrl-lynxpoint.c b/drivers/pinctrl/intel/pinctrl-lynxpoint.c index 3b0dfe9a51ba..3c1b71204bbe 100644 --- a/drivers/pinctrl/intel/pinctrl-lynxpoint.c +++ b/drivers/pinctrl/intel/pinctrl-lynxpoint.c @@ -197,6 +197,16 @@ static int lp_gpio_direction_output(struct gpio_chip *chip, unsigned int offset, return 0; } +static int lp_gpio_get_direction(struct gpio_chip *chip, unsigned int offset) +{ + void __iomem *reg = lp_gpio_reg(chip, offset, LP_CONFIG1); + + if (ioread32(reg) & DIR_BIT) + return GPIO_LINE_DIRECTION_IN; + + return GPIO_LINE_DIRECTION_OUT; +} + static void lp_gpio_irq_handler(struct irq_desc *desc) { struct irq_data *data = irq_desc_get_irq_data(desc); @@ -391,6 +401,7 @@ static int lp_gpio_probe(struct platform_device *pdev) gc->direction_output = lp_gpio_direction_output; gc->get = lp_gpio_get; gc->set = lp_gpio_set; + gc->get_direction = lp_gpio_get_direction; gc->base = -1; gc->ngpio = LP_NUM_GPIO; gc->can_sleep = false;