From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 37AD516C861; Mon, 27 May 2024 14:16:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716819378; cv=none; b=X+ttLvDglVoDy7OeBW0D8MoIRTVa/a0zRu4ezFj64mb2l7Q7UGpk0GXLjKF2gPO3Q9KCEz/jcltaqnQdPlkGYOitXI7jH3G5pE4Rmh+ZgVLi5XWsHjTgrhlj4GsoxQ4Y+5oDx1Chpsdc5lscHUVC1YkDbFwdeaQGn5AfTEi6CN0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716819378; c=relaxed/simple; bh=r1ZavXw/PgJLOPqEk12b3H0V3a/cJBxHeS5bWGKmWFc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=QntX4WVEffwSgVGdq0g6IjFOYgy5nDYCnpbv2LcLFoZx81tEVjnGgxYtt1HcEu/VVoiR4ZjzptVeFfCohkQb7ytOOC/KdQ3rZNM5ChUYq5OzlF0MxBo1ssgC077ULR+D+em+cncdauo5dxNsw89FC2qs+n2RD/ie9Qrp+FBceok= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=LEQ2q4+v; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="LEQ2q4+v" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AAB89C32789; Mon, 27 May 2024 14:16:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1716819377; bh=r1ZavXw/PgJLOPqEk12b3H0V3a/cJBxHeS5bWGKmWFc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LEQ2q4+vqu63jG9FFDbSToBGHBjLhR9K0MZ36uIwSk/mYo/mgHnpvYY0JOpK+kN+C k87qDetc74ScsmzCAnp0w1ZbCJ8kFF9TZAtskhmLCMTQBx0PbcdRYMHCtCzEMxvlWb Xh3uNssdDGYDRNeD8yFkuXN2G31q+Ef8TPJXhByCDkohb4rvuoXuM7nz63W/11op1R ErJZn1NKB8WH5pUgQr2y7Jfs1rBXOMNLRevlsbL7qCLEgybjjsWcMqNRt83fwgTaRV mzvdAyISmII2fES5v/20WInmmPczk7P7QP/RGJySjB86DszWGXgd1/WQ4AIu9vVKXz I+CM3I+K62CiQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Hans de Goede , "Rafael J . Wysocki" , Sasha Levin , rafael@kernel.org, raag.jadav@intel.com, mika.westerberg@linux.intel.com, michal.wilczynski@intel.com, linux-acpi@vger.kernel.org Subject: [PATCH AUTOSEL 6.6 07/21] ACPI: x86: Add PNP_UART1_SKIP quirk for Lenovo Blade2 tablets Date: Mon, 27 May 2024 10:15:18 -0400 Message-ID: <20240527141551.3853516-7-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240527141551.3853516-1-sashal@kernel.org> References: <20240527141551.3853516-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.6.32 Content-Transfer-Encoding: 8bit From: Hans de Goede [ Upstream commit d8f20383a2fc3a3844b08a4999cf0e81164a0e56 ] The x86 Android tablets on which quirks to skip looking for a matching UartSerialBus resource and instead unconditionally create a serial bus device (serdev) are necessary there are 2 sorts of serialports: ACPI enumerated highspeed designware UARTs, these are the ones which typcially need to be skipped since they need a serdev for the attached BT HCI. A PNP enumerated UART which is part of the PCU. So far the existing quirks have ignored this. But on the Lenovo Yoga Tablet 2 Pro 1380 models this is used for a custom fastcharging protocol. There is a Micro USB switch which can switch the USB data lines to this uart and then a 600 baud protocol is used to configure the charger for a voltage higher then 5V. Add a new ACPI_QUIRK_PNP_UART1_SKIP quirk type and set this for the existing entry for the Lenovo Yoga Tablet 2 830 / 1050 models. Note this will lead to unnecessarily also creating a serdev for the PCU UART on the 830 / 1050 which don't need this, but the UART is not used otherwise there so that is not a problem. Signed-off-by: Hans de Goede Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- drivers/acpi/x86/utils.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) diff --git a/drivers/acpi/x86/utils.c b/drivers/acpi/x86/utils.c index c708524576df4..f8cdc234cbc3f 100644 --- a/drivers/acpi/x86/utils.c +++ b/drivers/acpi/x86/utils.c @@ -261,9 +261,10 @@ bool force_storage_d3(void) #define ACPI_QUIRK_SKIP_I2C_CLIENTS BIT(0) #define ACPI_QUIRK_UART1_SKIP BIT(1) #define ACPI_QUIRK_UART1_TTY_UART2_SKIP BIT(2) -#define ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY BIT(3) -#define ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY BIT(4) -#define ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS BIT(5) +#define ACPI_QUIRK_PNP_UART1_SKIP BIT(3) +#define ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY BIT(4) +#define ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY BIT(5) +#define ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS BIT(6) static const struct dmi_system_id acpi_quirk_skip_dmi_ids[] = { /* @@ -343,6 +344,7 @@ static const struct dmi_system_id acpi_quirk_skip_dmi_ids[] = { DMI_MATCH(DMI_BIOS_VERSION, "BLADE_21"), }, .driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS | + ACPI_QUIRK_PNP_UART1_SKIP | ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY), }, { @@ -441,14 +443,18 @@ static int acpi_dmi_skip_serdev_enumeration(struct device *controller_parent, bo if (ret) return 0; - /* to not match on PNP enumerated debug UARTs */ - if (!dev_is_platform(controller_parent)) - return 0; - dmi_id = dmi_first_match(acpi_quirk_skip_dmi_ids); if (dmi_id) quirks = (unsigned long)dmi_id->driver_data; + if (!dev_is_platform(controller_parent)) { + /* PNP enumerated UARTs */ + if ((quirks & ACPI_QUIRK_PNP_UART1_SKIP) && uid == 1) + *skip = true; + + return 0; + } + if ((quirks & ACPI_QUIRK_UART1_SKIP) && uid == 1) *skip = true; -- 2.43.0