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 027A3C6FD18 for ; Tue, 28 Mar 2023 14:50:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233382AbjC1Ou0 (ORCPT ); Tue, 28 Mar 2023 10:50:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41810 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233401AbjC1OuI (ORCPT ); Tue, 28 Mar 2023 10:50:08 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E5547E192 for ; Tue, 28 Mar 2023 07:49:35 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E4DE961804 for ; Tue, 28 Mar 2023 14:49:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0562CC433D2; Tue, 28 Mar 2023 14:49:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1680014974; bh=NjmRWM0xEXG/zUQcEE7zhOg6Fqc4ekjsfjN1lv+duH0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=L3nNujwbSGy3EmG4u7PrUVWBj65bpYHYQABD1ohoKaGAGQ3dB+XHn6KrS3/NAzYA7 WtuJrIzIORHGmvrECKuX1zBSdh9/Q1uAiQntcmlLAzq/7oUTXAsXkMo1irNHYITjEO dCP5UUOcElWaLKbHUJ79xlCf46PL9t0bJhvj9zYg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Sanjay R Mehta , Basavaraj Natikar , Mika Westerberg Subject: [PATCH 6.2 120/240] thunderbolt: Add quirk to disable CLx Date: Tue, 28 Mar 2023 16:41:23 +0200 Message-Id: <20230328142624.787603286@linuxfoundation.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230328142619.643313678@linuxfoundation.org> References: <20230328142619.643313678@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Sanjay R Mehta commit 7af9da8ce8f9a16221ecd8ba4280582f5bd452fc upstream. Add QUIRK_NO_CLX to disable the CLx state for hardware which doesn't supports it. AMD Yellow Carp and Pink Sardine don't support CLx state, hence disabling it using QUIRK_NO_CLX. Cc: stable@vger.kernel.org Signed-off-by: Sanjay R Mehta Signed-off-by: Basavaraj Natikar [mw: added debug log when the quirk is run] Signed-off-by: Mika Westerberg Signed-off-by: Greg Kroah-Hartman --- drivers/thunderbolt/quirks.c | 13 +++++++++++++ drivers/thunderbolt/tb.h | 11 ++++++++--- 2 files changed, 21 insertions(+), 3 deletions(-) --- a/drivers/thunderbolt/quirks.c +++ b/drivers/thunderbolt/quirks.c @@ -20,6 +20,12 @@ static void quirk_dp_credit_allocation(s } } +static void quirk_clx_disable(struct tb_switch *sw) +{ + sw->quirks |= QUIRK_NO_CLX; + tb_sw_dbg(sw, "disabling CL states\n"); +} + struct tb_quirk { u16 hw_vendor_id; u16 hw_device_id; @@ -37,6 +43,13 @@ static const struct tb_quirk tb_quirks[] * DP buffers. */ { 0x8087, 0x0b26, 0x0000, 0x0000, quirk_dp_credit_allocation }, + /* + * CLx is not supported on AMD USB4 Yellow Carp and Pink Sardine platforms. + */ + { 0x0438, 0x0208, 0x0000, 0x0000, quirk_clx_disable }, + { 0x0438, 0x0209, 0x0000, 0x0000, quirk_clx_disable }, + { 0x0438, 0x020a, 0x0000, 0x0000, quirk_clx_disable }, + { 0x0438, 0x020b, 0x0000, 0x0000, quirk_clx_disable }, }; /** --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -23,6 +23,11 @@ #define NVM_MAX_SIZE SZ_512K #define NVM_DATA_DWORDS 16 +/* Keep link controller awake during update */ +#define QUIRK_FORCE_POWER_LINK_CONTROLLER BIT(0) +/* Disable CLx if not supported */ +#define QUIRK_NO_CLX BIT(1) + /** * struct tb_nvm - Structure holding NVM information * @dev: Owner of the NVM @@ -997,6 +1002,9 @@ static inline bool tb_switch_is_clx_enab */ static inline bool tb_switch_is_clx_supported(const struct tb_switch *sw) { + if (sw->quirks & QUIRK_NO_CLX) + return false; + return tb_switch_is_usb4(sw) || tb_switch_is_titan_ridge(sw); } @@ -1254,9 +1262,6 @@ struct usb4_port *usb4_port_device_add(s void usb4_port_device_remove(struct usb4_port *usb4); int usb4_port_device_resume(struct usb4_port *usb4); -/* Keep link controller awake during update */ -#define QUIRK_FORCE_POWER_LINK_CONTROLLER BIT(0) - void tb_check_quirks(struct tb_switch *sw); #ifdef CONFIG_ACPI