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 lists1p.gnu.org (lists1p.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CBDC5C5B56A for ; Tue, 11 Aug 2026 16:31:48 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists1p.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1wtpO4-0002tc-Hj; Tue, 11 Aug 2026 12:31:36 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wtpNt-0001zL-Dz for qemu-devel@nongnu.org; Tue, 11 Aug 2026 12:31:26 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wtpNr-0000o4-Jl for qemu-devel@nongnu.org; Tue, 11 Aug 2026 12:31:25 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1786465882; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=HXAWtw7Em+ptZ30dAYgIonsq2wUGiEIUYdNgiY4wFrE=; b=RqUO+qzIif7u1wQexksTDpChrgD1KayXqERBnB6RZe4FvQf8X2JUqG0Hvg0gPE/LO0XbSm LKI+dFzyNs+Ucj/B4dmjEZYQp2CTtN3AfYDMFBkyFvylKupRaEuqbElNyZqV+i+GILh2Lw XX4F6oPsRitftVd/OQ9Zxeth9i/n3YU= Received: from mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-99-c6G47kS3PNWQXM34-T5Gbg-1; Tue, 11 Aug 2026 12:31:21 -0400 X-MC-Unique: c6G47kS3PNWQXM34-T5Gbg-1 X-Mimecast-MFC-AGG-ID: c6G47kS3PNWQXM34-T5Gbg_1786465880 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 4DC5C1800878; Tue, 11 Aug 2026 16:31:20 +0000 (UTC) Received: from corto.redhat.com (unknown [10.44.48.12]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 9B27D195DF9A; Tue, 11 Aug 2026 16:31:18 +0000 (UTC) From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Cc: Emmanuel Blot , Glenn Miles , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Subject: [PULL 45/83] tests/qtest: pca9555: test polarity inversion Date: Tue, 11 Aug 2026 18:29:00 +0200 Message-ID: <20260811162938.1403216-46-clg@redhat.com> In-Reply-To: <20260811162938.1403216-1-clg@redhat.com> References: <20260811162938.1403216-1-clg@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Received-SPF: pass client-ip=170.10.129.124; envelope-from=clg@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.102, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 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: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Emmanuel Blot Add tests for the polarity inversion register: the inversion is applied when reading the INPUT register, both for input pins (pull-up) and for output-driven pins, and it does not affect the OUTPUT register readback. Signed-off-by: Emmanuel Blot Reviewed-by: Glenn Miles Link: https://lore.kernel.org/qemu-devel/20260709-catalina-upgrade-v1-12-82a63fead90c@free.fr Signed-off-by: Cédric Le Goater --- tests/qtest/pca9555-test.c | 44 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) diff --git a/tests/qtest/pca9555-test.c b/tests/qtest/pca9555-test.c index 6b085702c3c8..2afa061bd2e0 100644 --- a/tests/qtest/pca9555-test.c +++ b/tests/qtest/pca9555-test.c @@ -99,6 +99,46 @@ static void test_port_independence(void *obj, void *data, g_assert_cmphex(i2c_get8(dev, PCA9535_OUTPUT1), ==, 0xAA); } +/* + * Polarity inversion: reading INPUT with polarity bits set should + * return the XOR of the actual input state and the polarity register. + */ +static void test_polarity_inversion(void *obj, void *data, + QGuestAllocator *alloc) +{ + QI2CDevice *dev = (QI2CDevice *)obj; + + g_assert_cmphex(i2c_get8(dev, PCA9535_INPUT0), ==, 0xFF); + + i2c_set8(dev, PCA9535_POLARITY0, 0xFF); + g_assert_cmphex(i2c_get8(dev, PCA9535_INPUT0), ==, 0x00); + + i2c_set8(dev, PCA9535_POLARITY0, 0x0F); + g_assert_cmphex(i2c_get8(dev, PCA9535_INPUT0), ==, 0xF0); + + g_assert_cmphex(i2c_get8(dev, PCA9535_INPUT1), ==, 0xFF); + + i2c_set8(dev, PCA9535_POLARITY1, 0xAA); + g_assert_cmphex(i2c_get8(dev, PCA9535_INPUT1), ==, 0x55); +} + +/* Polarity inversion combined with output-driven pins. */ +static void test_polarity_with_output(void *obj, void *data, + QGuestAllocator *alloc) +{ + QI2CDevice *dev = (QI2CDevice *)obj; + + i2c_set8(dev, PCA9535_CONFIG0, 0x00); + i2c_set8(dev, PCA9535_OUTPUT0, 0xA5); + + g_assert_cmphex(i2c_get8(dev, PCA9535_INPUT0), ==, 0xA5); + + i2c_set8(dev, PCA9535_POLARITY0, 0xFF); + g_assert_cmphex(i2c_get8(dev, PCA9535_INPUT0), ==, 0x5A); + + g_assert_cmphex(i2c_get8(dev, PCA9535_OUTPUT0), ==, 0xA5); +} + static void pca9555_register_nodes(void) { QOSGraphEdgeOptions opts = { @@ -114,6 +154,10 @@ static void pca9555_register_nodes(void) NULL); qos_add_test("input-pullup", "pca9555", test_input_pullup, NULL); qos_add_test("port-independence", "pca9555", test_port_independence, NULL); + qos_add_test("polarity-inversion", "pca9555", test_polarity_inversion, + NULL); + qos_add_test("polarity-with-output", "pca9555", test_polarity_with_output, + NULL); } libqos_init(pca9555_register_nodes); -- 2.55.0