From mboxrd@z Thu Jan 1 00:00:00 1970 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 phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 48E07D3C547 for ; Sat, 19 Oct 2024 04:39:53 +0000 (UTC) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id DD1C588EF7; Sat, 19 Oct 2024 06:39:31 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=hifiphile.com Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (2048-bit key; unprotected) header.d=hifiphile-com.20230601.gappssmtp.com header.i=@hifiphile-com.20230601.gappssmtp.com header.b="lvBHpmJO"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id 86DDE88BB2; Fri, 18 Oct 2024 23:58:19 +0200 (CEST) Received: from mail-wm1-x32b.google.com (mail-wm1-x32b.google.com [IPv6:2a00:1450:4864:20::32b]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 6CFB088BBE for ; Fri, 18 Oct 2024 23:58:17 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=hifiphile.com Authentication-Results: phobos.denx.de; spf=none smtp.mailfrom=admin@hifiphile.com Received: by mail-wm1-x32b.google.com with SMTP id 5b1f17b1804b1-4315baa51d8so22560765e9.0 for ; Fri, 18 Oct 2024 14:58:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=hifiphile-com.20230601.gappssmtp.com; s=20230601; t=1729288697; x=1729893497; darn=lists.denx.de; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=4yl7rg5f4hMNSQsfTUJEi8FrJLdjkHIaKf5O9eVjYq4=; b=lvBHpmJOtmhRwTmeSJoDPSuLf/JiC6qlj/fkwd+7lgFMhjuLU4hD8d41jodWjFKyg3 Ho2d6sC6TTtEG2cO9tyLq3syNSGXV5R846Vj6cDU8L8urVIXy/qViKrQ+Y0ScnylaKWQ iI6k35onr8Q7EEDwHd97jZbbz8sj5dFXff830xMEDz6XFUx3iYBikFgZaO7ns6OnJmLq CgxyKVRNofpOa2ds2oGIyun791HuOb7dMIPkIAIHUnTy3LryK8hOrGe1P0uHwa/xA5cN U1HihQRA88+t+SndZ2rAeTHJAfYsJiHtoWC0vQ+1K21IICe6koW6RnGEcWeonVb1p6RD LGzw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1729288697; x=1729893497; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=4yl7rg5f4hMNSQsfTUJEi8FrJLdjkHIaKf5O9eVjYq4=; b=WbEeMJcuFmpK3sfm1hpKELMd/9QH3Kh729s2ck7lYXLa/713bmUYMqWMHqj89pbTQ2 nw2tSCut7g+Ndnq8tGsoUZ5iyQe8mbrAu15axRMVS659TcNbI4FdOvrdXVsZVnOI3+Ce ZWjkLYeH9u+yOhks9KwYLP6FMNEjcBTQU7Q2KRDMrfLrDOc/pHM17K+CC6eUt5Qm2Gxl VVs+zJSZoPcIxE9Z5kiIVIKHAwVtXtSWQWHjhptn3bOyJfgNSWhv4Vmorz9UHJc8iLW5 vmOM6oTgLDIQ0adhmyI29EDVkv45gPj2perZMxMb1NycGheHY0uzftm3dmRIRcilcjzp 30ng== X-Gm-Message-State: AOJu0YyTNpe9nnvQhzkvUrOiO2Csw76wiKDLcmhYWRmttwgfFF9bFxvR 1M10Wso9ZK8oIbZEGILn47gZvFvVEu+zXLRp7sDpvzFI6X6HXnfx3IOflPQ3OQA= X-Google-Smtp-Source: AGHT+IHuy7s2abMxvxXGVKsCrddEBzmFL8Ku+q2g8PWDsMFz88z/dc3REm5mGlm0ys4K0e/zqHRZJw== X-Received: by 2002:a05:600c:34d4:b0:431:588a:44a2 with SMTP id 5b1f17b1804b1-43161636685mr30540545e9.12.1729288696637; Fri, 18 Oct 2024 14:58:16 -0700 (PDT) Received: from localhost.localdomain ([78.199.60.143]) by smtp.googlemail.com with ESMTPSA id 5b1f17b1804b1-43160e443a4sm33841795e9.37.2024.10.18.14.58.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 18 Oct 2024 14:58:16 -0700 (PDT) From: Zixun LI To: Simon Glass Cc: u-boot@lists.denx.de, Zixun LI Subject: [PATCH v2 3/3] gpio: at91: Implement ops get_flags Date: Fri, 18 Oct 2024 23:57:51 +0200 Message-ID: <20241018215751.322145-1-admin@hifiphile.com> X-Mailer: git-send-email 2.46.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Mailman-Approved-At: Sat, 19 Oct 2024 06:39:29 +0200 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean Add ops get_dir_flags() to read status from GPIO registers. Signed-off-by: Zixun LI --- Changes in v2: - Fix pullup read polarity --- drivers/gpio/at91_gpio.c | 45 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) diff --git a/drivers/gpio/at91_gpio.c b/drivers/gpio/at91_gpio.c index 7828f9b447..c44e02cd90 100644 --- a/drivers/gpio/at91_gpio.c +++ b/drivers/gpio/at91_gpio.c @@ -240,6 +240,24 @@ static void at91_set_port_multi_drive(struct at91_port *at91_port, int offset, i else writel(mask, &at91_port->mddr); } + +static bool at91_get_port_multi_drive(struct at91_port *at91_port, int offset) +{ + u32 mask, val; + + mask = 1 << offset; + val = readl(&at91_port->mdsr); + return val & mask; +} + +static bool at91_get_port_pullup(struct at91_port *at91_port, int offset) +{ + u32 mask, val; + + mask = 1 << offset; + val = readl(&at91_port->pusr); + return !(val & mask); +} #endif static void at91_set_port_input(struct at91_port *at91_port, int offset, @@ -608,6 +626,32 @@ static int at91_gpio_set_flags(struct udevice *dev, unsigned int offset, return 0; } +static int at91_gpio_get_flags(struct udevice *dev, unsigned int offset, + ulong *flagsp) +{ + struct at91_port_priv *port = dev_get_priv(dev); + ulong dir_flags = 0; + + if (at91_get_port_output(port->regs, offset)) { + dir_flags |= GPIOD_IS_OUT; + + if (at91_get_port_multi_drive(port->regs, offset)) + dir_flags |= GPIOD_OPEN_DRAIN; + + if (at91_get_port_value(port->regs, offset)) + dir_flags |= GPIOD_IS_OUT_ACTIVE; + } else { + dir_flags |= GPIOD_IS_IN; + } + + if (at91_get_port_pullup(port->regs, offset)) + dir_flags |= GPIOD_PULL_UP; + + *flagsp = dir_flags; + + return 0; +} + static const char *at91_get_bank_name(uint32_t base_addr) { switch (base_addr) { @@ -637,6 +681,7 @@ static const struct dm_gpio_ops gpio_at91_ops = { .set_value = at91_gpio_set_value, .get_function = at91_gpio_get_function, .set_flags = at91_gpio_set_flags, + .get_flags = at91_gpio_get_flags, }; static int at91_gpio_probe(struct udevice *dev) -- 2.46.2