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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 14BD5C2BB3F for ; Mon, 20 Nov 2023 17:06:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229653AbjKTRGb (ORCPT ); Mon, 20 Nov 2023 12:06:31 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46122 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231586AbjKTRGR (ORCPT ); Mon, 20 Nov 2023 12:06:17 -0500 Received: from relay4-d.mail.gandi.net (relay4-d.mail.gandi.net [IPv6:2001:4b98:dc4:8::224]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A760AD8; Mon, 20 Nov 2023 09:06:12 -0800 (PST) Received: by mail.gandi.net (Postfix) with ESMTPSA id A5666E000F; Mon, 20 Nov 2023 17:06:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1700499971; 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=0N+JeDCct2n4pgXnrJDil9hLa2D4hq87laHaGCbNG30=; b=elgohwiwWAZjxzqdb9A7uBO0ZwHANO1eYP4fdo/kWWYKEUkfmfWsVYsvVXRm1okOGrovnI z5ol2gOy7Bb5WApNszNoJLqthfBDIiDrPdxSUlipiqJqaJRQVPrYOTlP96oi5VYddLJc8E II3HhYNB1jq39Gnv6Qxh1Y8RP0ftX28Bdvfwbj8R2Jd2aN+aMLldFHwwXB5mzpIY08Kzj5 5U0jSMEsTHfEfCDvbrD+qY3TjtzCOVMRW/VcBo/6SY8XjGxHFWFteOlkrIpOlerf0CJzLF btqfyQGYF/sH44FpSXLniiTdnVcENmVeaV8jSwnnH7A1sdmtGmr64cqHHAUYXg== From: =?utf-8?q?Th=C3=A9o_Lebrun?= Date: Mon, 20 Nov 2023 18:06:05 +0100 Subject: [PATCH v2 5/7] usb: cdns3: add quirk to platform data for reset-on-resume MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Message-Id: <20231120-j7200-usb-suspend-v2-5-038c7e4a3df4@bootlin.com> References: <20231120-j7200-usb-suspend-v2-0-038c7e4a3df4@bootlin.com> In-Reply-To: <20231120-j7200-usb-suspend-v2-0-038c7e4a3df4@bootlin.com> To: Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Roger Quadros , Peter Chen , Pawel Laszczak , Nishanth Menon , Vignesh Raghavendra , Tero Kristo Cc: linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, "Thomas Petazzoni thomas.petazzoni"@bootlin.com, =?utf-8?q?Gr=C3=A9gory_Clement?= , =?utf-8?q?Th=C3=A9o_Lebrun?= X-Mailer: b4 0.12.3 X-GND-Sasl: theo.lebrun@bootlin.com Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The cdns3 host role does not care about reset-on-resume. xHCI however reconfigures itself in silence rather than printing a warning about a resume error. Related warning example: [ 16.017462] xhci-hcd xhci-hcd.1.auto: xHC error in resume, USBSTS 0x401, Reinit Allow passing a CDNS3_RESET_ON_RESUME quirk flag from cdns3 pdata down to xHCI pdata. The goal is to allow signaling about reset-on-resume behavior from platform wrapper drivers. When used, remote wakeup is not expected to work. Signed-off-by: Théo Lebrun --- drivers/usb/cdns3/core.h | 1 + drivers/usb/cdns3/host.c | 3 +++ 2 files changed, 4 insertions(+) diff --git a/drivers/usb/cdns3/core.h b/drivers/usb/cdns3/core.h index 81a9c9d6be08..7487067ba23f 100644 --- a/drivers/usb/cdns3/core.h +++ b/drivers/usb/cdns3/core.h @@ -44,6 +44,7 @@ struct cdns3_platform_data { bool suspend, bool wakeup); unsigned long quirks; #define CDNS3_DEFAULT_PM_RUNTIME_ALLOW BIT(0) +#define CDNS3_RESET_ON_RESUME BIT(1) }; /** diff --git a/drivers/usb/cdns3/host.c b/drivers/usb/cdns3/host.c index 6164fc4c96a4..28c4d1deb231 100644 --- a/drivers/usb/cdns3/host.c +++ b/drivers/usb/cdns3/host.c @@ -91,6 +91,9 @@ static int __cdns_host_init(struct cdns *cdns) if (cdns->pdata && (cdns->pdata->quirks & CDNS3_DEFAULT_PM_RUNTIME_ALLOW)) cdns->xhci_plat_data->quirks |= XHCI_DEFAULT_PM_RUNTIME_ALLOW; + if (cdns->pdata && (cdns->pdata->quirks & CDNS3_RESET_ON_RESUME)) + cdns->xhci_plat_data->quirks |= XHCI_RESET_ON_RESUME; + ret = platform_device_add_data(xhci, cdns->xhci_plat_data, sizeof(struct xhci_plat_priv)); if (ret) -- 2.42.0