From patchwork Wed Jul 26 03:31:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Laplante X-Patchwork-Id: 1812945 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=laplante.io header.i=@laplante.io header.a=rsa-sha256 header.s=protonmail3 header.b=3rQrH1JR; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4R9fdW1SPQz1ybX for ; Wed, 26 Jul 2023 13:34:07 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qOVGD-0005N8-Gf; Tue, 25 Jul 2023 23:32:25 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qOVG2-0005MJ-JL; Tue, 25 Jul 2023 23:32:14 -0400 Received: from mail-40136.proton.ch ([185.70.40.136]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qOVG0-0006Qw-Qx; Tue, 25 Jul 2023 23:32:14 -0400 Date: Wed, 26 Jul 2023 03:31:51 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=laplante.io; s=protonmail3; t=1690342322; x=1690601522; bh=CYxoj1AwwohRjVj/umFNzIRU2yOes9wWnbtuyhtBtvs=; h=Date:To:From:Cc:Subject:Message-ID:In-Reply-To:References: Feedback-ID:From:To:Cc:Date:Subject:Reply-To:Feedback-ID: Message-ID:BIMI-Selector; b=3rQrH1JRxpN/n3XGP+TAvZcWuLa8MzgTzVY+rpDoauM6WVuZ1al1V/BPAxlSUZP0W WI8A4QaSiBbMAZdOtk2Nd1Ehh7oTa4TkUPHRJD+SoNpPmF9Xsi6zlROxAhy5ffr4BL BGdHkAEuGO2VM5qczoGxq0Mru7GjaPb4Cd8i9ucDYaGYynUGRMIe0Ye+ymdN4VbEKS jWcZ5ciEhLXWwO1sEzoNgsYOKi45hrjlSGiHzaOm5UtNrKoun4hizY9+EgDhR8qzJ1 saaQkQF/EBqWeN1LYhJRCoqOK6as/F9g3/ZNQUrmx9WBWYgXn4YWXP4+srRb9Grm0/ EQKvxRMkeXagA== To: qemu-devel@nongnu.org From: Chris Laplante Cc: Joel Stanley , Peter Maydell , qemu-arm@nongnu.org, Chris Laplante Subject: [PATCH v2 1/6] hw/gpio/nrf51: implement DETECT signal Message-ID: <20230726030450.757462-2-chris@laplante.io> In-Reply-To: <20230726030450.757462-1-chris@laplante.io> References: <20230726030450.757462-1-chris@laplante.io> Feedback-ID: 43500449:user:proton MIME-Version: 1.0 Received-SPF: pass client-ip=185.70.40.136; envelope-from=chris@laplante.io; helo=mail-40136.proton.ch X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Implement nRF51 DETECT signal in the GPIO peripheral. The reference manual makes mention of a per-pin DETECT signal, but these are not exposed to the user. See https://devzone.nordicsemi.com/f/nordic-q-a/39858/gpio-per-pin-detect-signal-available for more information. Currently, I don't see a reason to model these. Signed-off-by: Chris Laplante Reviewed-by: Peter Maydell --- hw/gpio/nrf51_gpio.c | 14 +++++++++++++- include/hw/gpio/nrf51_gpio.h | 1 + 2 files changed, 14 insertions(+), 1 deletion(-) diff --git a/hw/gpio/nrf51_gpio.c b/hw/gpio/nrf51_gpio.c index b47fddf4ed..08396c69a4 100644 --- a/hw/gpio/nrf51_gpio.c +++ b/hw/gpio/nrf51_gpio.c @@ -78,6 +78,7 @@ static void update_state(NRF51GPIOState *s) int pull; size_t i; bool connected_out, dir, connected_in, out, in, input; + bool assert_detect = false; for (i = 0; i < NRF51_GPIO_PINS; i++) { pull = pull_value(s->cnf[i]); @@ -99,7 +100,15 @@ static void update_state(NRF51GPIOState *s) qemu_log_mask(LOG_GUEST_ERROR, "GPIO pin %zu short circuited\n", i); } - if (!connected_in) { + if (connected_in) { + uint32_t detect_config = extract32(s->cnf[i], 16, 2); + if ((detect_config == 2) && (in == 1)) { + assert_detect = true; + } + if ((detect_config == 3) && (in == 0)) { + assert_detect = true; + } + } else { /* * Floating input: the output stimulates IN if connected, * otherwise pull-up/pull-down resistors put a value on both @@ -116,6 +125,8 @@ static void update_state(NRF51GPIOState *s) } update_output_irq(s, i, connected_out, out); } + + qemu_set_irq(s->detect, assert_detect); } /* @@ -291,6 +302,7 @@ static void nrf51_gpio_init(Object *obj) qdev_init_gpio_in(DEVICE(s), nrf51_gpio_set, NRF51_GPIO_PINS); qdev_init_gpio_out(DEVICE(s), s->output, NRF51_GPIO_PINS); + qdev_init_gpio_out_named(DEVICE(s), &s->detect, "detect", 1); } static void nrf51_gpio_class_init(ObjectClass *klass, void *data) diff --git a/include/hw/gpio/nrf51_gpio.h b/include/hw/gpio/nrf51_gpio.h index 8f9c2f86da..fcfa2bac17 100644 --- a/include/hw/gpio/nrf51_gpio.h +++ b/include/hw/gpio/nrf51_gpio.h @@ -64,6 +64,7 @@ struct NRF51GPIOState { uint32_t old_out_connected; qemu_irq output[NRF51_GPIO_PINS]; + qemu_irq detect; };