From patchwork Tue Mar 28 10:01:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sakari Ailus X-Patchwork-Id: 13190806 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 2D37DC77B75 for ; Tue, 28 Mar 2023 10:03:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232392AbjC1KCm (ORCPT ); Tue, 28 Mar 2023 06:02:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53100 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232372AbjC1KCP (ORCPT ); Tue, 28 Mar 2023 06:02:15 -0400 Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5D98A5FCB; Tue, 28 Mar 2023 03:02:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1679997734; x=1711533734; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=vLL1m2QQXU8PS63Q2Za2fPq8nNvJPseI0J5KMCDCQJg=; b=QGTfDn26NVxH+C/n1OSQJbxS+BBljLUOKoSNSS19S8sTsCFJIOVivH+S 2T7ylsSpCBjM5tmaaAnMwyKXxeiSemQcTEq6ymm5CYlcQ6lZi/zLW7v7s Q1Isp4ViSBCVUwYwkWEqfjqS3fmCQmmO1w6Q0FsXLMR+HrxPuuN2dZ/Ln x8an4K4JZDRlnXPm7yBtIE/8J304SlPW2SK/+p9SmdT+sXAlSMErXZNmz xt8NivMRj6xPaoIxJmNMHLBuEMEK7bKi9oBaQFpWWM90lOxTBcilQC2Ya ZXfi4x0i3qZfGeYzHe/vNz+z5J/Cu0C4TtZhzjKfA2XNw1EhrpCzDq/YT g==; X-IronPort-AV: E=McAfee;i="6600,9927,10662"; a="324420022" X-IronPort-AV: E=Sophos;i="5.98,297,1673942400"; d="scan'208";a="324420022" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Mar 2023 03:02:13 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10662"; a="753078557" X-IronPort-AV: E=Sophos;i="5.98,297,1673942400"; d="scan'208";a="753078557" Received: from turnipsi.fi.intel.com (HELO kekkonen.fi.intel.com) ([10.237.72.44]) by fmsmga004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Mar 2023 03:02:11 -0700 Received: from svinhufvud.ger.corp.intel.com (localhost [IPv6:::1]) by kekkonen.fi.intel.com (Postfix) with ESMTP id CA26F12233C; Tue, 28 Mar 2023 13:02:08 +0300 (EEST) 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 v6 08/10] ACPI: property: Rename parsed MIPI DisCo for Imaging properties Date: Tue, 28 Mar 2023 13:01:57 +0300 Message-Id: <20230328100159.1457160-10-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230328100159.1457160-1-sakari.ailus@linux.intel.com> References: <20230328100159.1457160-1-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 | 36 ++++++++++++++++++++++++++++++++++++ drivers/acpi/property.c | 22 ++++++++++++---------- 3 files changed, 49 insertions(+), 10 deletions(-) diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index afcd1dc3062c..bcacad73c5a7 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -317,5 +317,6 @@ void acpi_crs_csi2_swnodes_del_free(void); void acpi_bus_scan_check_crs_csi2(acpi_handle handle, struct acpi_scan_context *ctx); void acpi_bus_scan_crs_csi2(struct acpi_scan_context_csi2 *ctx); 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 9f29bf231eaf..fcbef3677558 100644 --- a/drivers/acpi/mipi.c +++ b/drivers/acpi/mipi.c @@ -716,3 +716,39 @@ void acpi_init_swnodes(struct acpi_device *device) primary = acpi_fwnode_handle(device); primary->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) +{ + char *e0 = elements[0].string.pointer; + 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, e0)) { + WARN_ON(strscpy(e0, 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 1892787e73a6..541bda2c118f 100644 --- a/drivers/acpi/property.c +++ b/drivers/acpi/property.c @@ -127,7 +127,7 @@ 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) { @@ -148,7 +148,7 @@ 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) { @@ -292,22 +292,24 @@ 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; } @@ -539,7 +541,7 @@ 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,