From patchwork Mon Jan 23 13:46:15 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sakari Ailus X-Patchwork-Id: 646597 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 CFF46C38142 for ; Mon, 23 Jan 2023 13:48:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231984AbjAWNsK (ORCPT ); Mon, 23 Jan 2023 08:48:10 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37828 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232042AbjAWNry (ORCPT ); Mon, 23 Jan 2023 08:47:54 -0500 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 745F52529C; Mon, 23 Jan 2023 05:47:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1674481653; x=1706017653; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=WZ8SLGuI8G6aqKbHFUDKiFLXJ88EGa840EOU/+TpTdo=; b=OpZJLU4SamK0C3EwC73Bi2qKitX3QhBTKUF9AZ3H9lzJcsSWGRnQ6bCs qf4PlfND1oLLovA+B6ftc1+KaGDDEC5fIiWa+/o4dpsmZ/4qxprumcIS8 1bVxSYl7nhb9tUluEOQ71v90i1O1lLUAiF3D2XlkKPhvQIuYXTzk8fnVN wE64Z9zEj4hT/R/QtwxLHcQL7q+zpWc6+5nSpjVWzk31q6t8aY+02RoF8 1iYa5WNl6BMyiQk6Ki13PXMdoEm2YpEKH5XMoU1Roly2U3bFpg8kjoaQf DI3JOYeIcf9tfyhwV6bE4/Sqafu4NzQ7Dmem0Ptpcac8mGG143/bqf1/T g==; X-IronPort-AV: E=McAfee;i="6500,9779,10598"; a="390542182" X-IronPort-AV: E=Sophos;i="5.97,239,1669104000"; d="scan'208";a="390542182" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Jan 2023 05:46:42 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10598"; a="785601930" X-IronPort-AV: E=Sophos;i="5.97,239,1669104000"; d="scan'208";a="785601930" Received: from turnipsi.fi.intel.com (HELO paasikivi.fi.intel.com) ([10.237.72.44]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Jan 2023 05:46:40 -0800 Received: from punajuuri.localdomain (punajuuri.localdomain [192.168.240.130]) by paasikivi.fi.intel.com (Postfix) with ESMTP id C598920CF6; Mon, 23 Jan 2023 15:46:33 +0200 (EET) Received: from sailus by punajuuri.localdomain with local (Exim 4.94.2) (envelope-from ) id 1pJx9Y-00173Y-40; Mon, 23 Jan 2023 15:46:28 +0200 From: Sakari Ailus To: linux-acpi@vger.kernel.org Cc: linux-media@vger.kernel.org, rafael@kernel.org, andriy.shevchenko@linux.intel.com, heikki.krogerus@linux.intel.com Subject: [PATCH v2 6/8] ACPI: property: Rename parsed MIPI DisCo for Imaging properties Date: Mon, 23 Jan 2023 15:46:15 +0200 Message-Id: <20230123134617.265382-7-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230123134617.265382-1-sakari.ailus@linux.intel.com> References: <20230123134617.265382-1-sakari.ailus@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org MIPI DisCo for Imaging defines properties for sensor-adjacent devices such as EEPROM, LED flash or lens VCM as either device or sub-node references. This is compliant with existing DT definitions apart from property names. Rename parsed MIPI-defined properties so drivers will have a unified view of them as defined in DT and already parsed by drivers. This can be done in-place as the MIPI-defined property strings are always longer than the DT one. This also results in loss of constness in parser function arguments. Individual bindings to devices could define the references differently between MIPI DisCo for Imaging and DT, in terms of device or sub-node references. This will still need to be handled in the drivers themselves. Signed-off-by: Sakari Ailus --- drivers/acpi/internal.h | 1 + drivers/acpi/mipi.c | 37 +++++++++++++++++++++++++++++++++++++ drivers/acpi/property.c | 22 ++++++++++++---------- 3 files changed, 50 insertions(+), 10 deletions(-) diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index fac87404e294c..f107094bfe16f 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -289,5 +289,6 @@ static inline void acpi_init_lpit(void) { } void acpi_crs_csi2_swnodes_del_free(void); void acpi_bus_scan_crs_csi2(acpi_handle handle); void acpi_init_swnodes(struct acpi_device *device); +void acpi_properties_prepare_mipi(union acpi_object *elements); #endif /* _ACPI_INTERNAL_H_ */ diff --git a/drivers/acpi/mipi.c b/drivers/acpi/mipi.c index 4addcb4cb9ce1..9177170952104 100644 --- a/drivers/acpi/mipi.c +++ b/drivers/acpi/mipi.c @@ -680,3 +680,40 @@ void acpi_init_swnodes(struct acpi_device *device) device->fwnode.secondary = software_node_fwnode(ads->nodes); } + +static const struct mipi_disco_prop { + const char *mipi_prop; + const char *dt_prop; +} mipi_disco_props[] = { + { "mipi-img-lens-focus", "lens-focus" }, + { "mipi-img-flash-leds", "flash-leds" }, + { "mipi-img-clock-frequency", "clock-frequency" }, + { "mipi-img-led-max-current", "led-max-microamp" }, + { "mipi-img-flash-max-current", "flash-max-microamp" }, + { "mipi-img-flash-max-timeout", "flash-max-timeout-us" }, +}; + +/** + * acpi_properties_prepare_mipi - Rename MIPI properties as commin DT ones + * + * @elements: ACPI object containing _DSD properties for a device node + * + * Renames MIPI-defined properties as common DT ones. The pre-requisite is that + * the names of all such MIPI properties are no longer than the corresponding DT + * ones. + */ +void acpi_properties_prepare_mipi(union acpi_object *elements) +{ + unsigned int i; + + /* Replace MIPI DisCo for Imaging property names with DT equivalents. */ + for (i = 0; i < ARRAY_SIZE(mipi_disco_props); i++) { + if (!strcmp(mipi_disco_props[i].mipi_prop, + elements[0].string.pointer)) { + WARN_ON(strscpy(elements[0].string.pointer, + mipi_disco_props[i].dt_prop, + elements[0].string.length) < 0); + break; + } + } +} diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c index ae1f8259e76a5..6ab4e422d157c 100644 --- a/drivers/acpi/property.c +++ b/drivers/acpi/property.c @@ -124,7 +124,7 @@ static bool acpi_nondev_subnode_extract(union acpi_object *desc, } static bool acpi_nondev_subnode_data_ok(acpi_handle handle, - const union acpi_object *link, + union acpi_object *link, struct list_head *list, struct fwnode_handle *parent) { @@ -145,7 +145,7 @@ static bool acpi_nondev_subnode_data_ok(acpi_handle handle, } static bool acpi_nondev_subnode_ok(acpi_handle scope, - const union acpi_object *link, + union acpi_object *link, struct list_head *list, struct fwnode_handle *parent) { @@ -276,22 +276,24 @@ static bool acpi_property_value_ok(const union acpi_object *value) return false; } -static bool acpi_properties_format_valid(const union acpi_object *properties) +static bool acpi_properties_prepare(union acpi_object *properties) { - int i; + unsigned int i; for (i = 0; i < properties->package.count; i++) { - const union acpi_object *property; + union acpi_object *property = &properties->package.elements[i]; + union acpi_object *elements = property->package.elements; - property = &properties->package.elements[i]; /* * Only two elements allowed, the first one must be a string and * the second one has to satisfy certain conditions. */ - if (property->package.count != 2 - || property->package.elements[0].type != ACPI_TYPE_STRING - || !acpi_property_value_ok(&property->package.elements[1])) + if (property->package.count != 2 || + elements[0].type != ACPI_TYPE_STRING || + !acpi_property_value_ok(&elements[1])) return false; + + acpi_properties_prepare_mipi(elements); } return true; } @@ -523,7 +525,7 @@ static bool acpi_extract_properties(acpi_handle scope, union acpi_object *desc, * We found the matching GUID. Now validate the format of the * package immediately following it. */ - if (!acpi_properties_format_valid(properties)) + if (!acpi_properties_prepare(properties)) continue; acpi_data_add_props(data, (const guid_t *)guid->buffer.pointer,