From patchwork Wed Feb 8 21:27:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sakari Ailus X-Patchwork-Id: 13133750 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 114ECC64EC4 for ; Wed, 8 Feb 2023 21:28:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231678AbjBHV16 (ORCPT ); Wed, 8 Feb 2023 16:27:58 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51788 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231642AbjBHV14 (ORCPT ); Wed, 8 Feb 2023 16:27:56 -0500 Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 96F551C335; Wed, 8 Feb 2023 13:27:54 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1675891674; x=1707427674; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=7BEYjJW+002861fmwV8Ta6mGPdSuhMlGCW+6eHxMVIo=; b=SnuRnLRfCW3/r5eyxQaSBtaxPfuZA7muv6PgbrstsYNb8UxqhGUamAji 8ENW6JZp38eEnLqGitiOnJzs+1CJFmZ3t6CnHouNkpxiWvGrO7GC2yLJ7 5IULJdU2nLBDUh1DbMSqynAfEkPhbz/p0j75b4GS0GBj1QUJiSnGdSHKc 5ukEfaX4RKStMTVNg+W++DhzhhyRcuY4sogng85UVJBzMvpc4zr1dG+U8 HMz8L2AyIMTRRxpBvlq6XvXq7b5VRieKQbnY6CDUJXA+3fjxhSCds8sc5 LgdjcvGZlbuKvCZxUpjebKyupKLSKJhEIbucBJaDWhJvWdbPBfLCC5nE+ w==; X-IronPort-AV: E=McAfee;i="6500,9779,10615"; a="313566182" X-IronPort-AV: E=Sophos;i="5.97,281,1669104000"; d="scan'208";a="313566182" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Feb 2023 13:27:52 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10615"; a="756180457" X-IronPort-AV: E=Sophos;i="5.97,281,1669104000"; d="scan'208";a="756180457" Received: from turnipsi.fi.intel.com (HELO kekkonen.fi.intel.com) ([10.237.72.44]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Feb 2023 13:27:49 -0800 Received: from punajuuri.localdomain (punajuuri.localdomain [192.168.240.130]) by kekkonen.fi.intel.com (Postfix) with ESMTP id BFEEE122885; Wed, 8 Feb 2023 23:27:47 +0200 (EET) Received: from sailus by punajuuri.localdomain with local (Exim 4.94.2) (envelope-from ) id 1pPryM-00DMZJ-RI; Wed, 08 Feb 2023 23:27:22 +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 v5 4/8] ACPI: property: Generate camera swnodes for ACPI and DisCo for Imaging Date: Wed, 8 Feb 2023 23:27:08 +0200 Message-Id: <20230208212712.3184953-5-sakari.ailus@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230208212712.3184953-1-sakari.ailus@linux.intel.com> References: <20230208212712.3184953-1-sakari.ailus@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org Generate software nodes for information parsed from ACPI _CRS for CSI-2 as well as MIPI DisCo for Imaging spec. The software nodes are compliant with existing ACPI or DT definitions and are parsed by relevant drivers without changes. Signed-off-by: Sakari Ailus --- drivers/acpi/internal.h | 1 + drivers/acpi/mipi.c | 356 ++++++++++++++++++++++++++++++++++++++++ drivers/acpi/scan.c | 19 +++ include/acpi/acpi_bus.h | 70 ++++++++ 4 files changed, 446 insertions(+) diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index 1ec4aa92bf17a..fac87404e294c 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -288,5 +288,6 @@ 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); #endif /* _ACPI_INTERNAL_H_ */ diff --git a/drivers/acpi/mipi.c b/drivers/acpi/mipi.c index 33d50df831933..f81a3bb860609 100644 --- a/drivers/acpi/mipi.c +++ b/drivers/acpi/mipi.c @@ -15,6 +15,8 @@ #include #include +#include + #include "internal.h" /* Temporary ACPI device handle to software node data structure mapping */ @@ -26,6 +28,18 @@ struct crs_csi2_swnodes { static LIST_HEAD(crs_csi2_swnodes); +/* Obtain pre-allocated software nodes for an ACPI device handle */ +static struct acpi_device_software_nodes *crs_csi2_swnode_get(acpi_handle handle) +{ + struct crs_csi2_swnodes *swnodes; + + list_for_each_entry(swnodes, &crs_csi2_swnodes, list) + if (swnodes->handle == handle) + return swnodes->ads; + + return NULL; +} + static void crs_csi2_swnode_del_free(struct crs_csi2_swnodes *swnodes) { list_del(&swnodes->list); @@ -171,6 +185,35 @@ struct acpi_handle_ref { #define NO_CSI2_PORT (UINT_MAX - 1) +/* + * Return next free entry in ports array of a software nodes related to an ACPI + * device. + */ +static unsigned int next_csi2_port_index(struct acpi_device_software_nodes *ads, + unsigned int port_nr) +{ + unsigned int i; + + for (i = 0; i < ads->num_ports; i++) { + struct acpi_device_software_node_port *port = &ads->ports[i]; + + if (port->port_nr == port_nr) + return i; + + if (port->port_nr == NO_CSI2_PORT) { + port->port_nr = port_nr; + return i; + } + } + + return NO_CSI2_PORT; +} + +/* Print graph port name into a buffer, return non-zero if failed. */ +#define GRAPH_PORT_NAME(var, num) \ + (snprintf((var), sizeof(var), SWNODE_GRAPH_PORT_NAME_FMT, (num)) >= \ + sizeof(var)) + static int crs_handle_cmp(const void *__a, const void *__b) { const struct acpi_handle_ref *a = __a, *b = __b; @@ -258,6 +301,9 @@ void acpi_crs_csi2_alloc_fill_swnodes(size_t ports_count, acpi_handle handle) list_add(&swnodes->list, &crs_csi2_swnodes); } +#define ACPI_CRS_CSI2_PHY_TYPE_C 0 +#define ACPI_CRS_CSI2_PHY_TYPE_D 1 + /** * acpi_bus_scan_crs_csi2 - Scan a device and its child devices for _CRS CSI-2 * @@ -277,6 +323,8 @@ void acpi_crs_csi2_alloc_fill_swnodes(size_t ports_count, acpi_handle handle) * 4. Allocate memory for swnodes each ACPI device requires later on, and * generate a list of such allocations. * + * 5. Set up properties for software nodes. + * * Note that struct acpi_device isn't available yet at this time. * * acpi_scan_lock in scan.c must be held when calling this function. @@ -352,7 +400,315 @@ void acpi_bus_scan_crs_csi2(acpi_handle handle) this_count = this->count; } + /* + * Allocate and set up necessary software nodes for each device and set + * up properties from _CRS CSI2 descriptor. + */ + list_for_each_entry(csi2, &csi2_all.crs_csi2_head, list) { + struct acpi_device_software_nodes *local_swnodes; + struct crs_csi2_instance *inst; + + local_swnodes = crs_csi2_swnode_get(csi2->handle); + if (WARN_ON_ONCE(!local_swnodes)) + continue; + + list_for_each_entry(inst, &csi2->buses, list) { + struct acpi_device_software_nodes *remote_swnodes; + struct acpi_device_software_node_port *local_port; + struct acpi_device_software_node_port *remote_port; + struct software_node *local_node, *remote_node; + unsigned int local_index, remote_index; + unsigned int bus_type; + + remote_swnodes = crs_csi2_swnode_get(inst->remote_handle); + if (WARN_ON_ONCE(!remote_swnodes)) + continue; + + local_index = next_csi2_port_index(local_swnodes, inst->csi2.local_port_instance); + remote_index = next_csi2_port_index(remote_swnodes, inst->csi2.resource_source.index); + + if (WARN_ON_ONCE(local_index >= local_swnodes->num_ports) || + WARN_ON_ONCE(remote_index >= remote_swnodes->num_ports)) + goto out_free; + + switch (inst->csi2.phy_type) { + case ACPI_CRS_CSI2_PHY_TYPE_C: + bus_type = V4L2_FWNODE_BUS_TYPE_CSI2_CPHY; + break; + case ACPI_CRS_CSI2_PHY_TYPE_D: + bus_type = V4L2_FWNODE_BUS_TYPE_CSI2_DPHY; + break; + default: + acpi_handle_info(handle, + "ignoring CSI-2 PHY type %u\n", + inst->csi2.phy_type); + continue; + } + + local_port = &local_swnodes->ports[local_index]; + local_node = &local_swnodes->nodes[ACPI_DEVICE_SWNODE_EP(local_index)]; + local_port->remote_ep_ref[0] = SOFTWARE_NODE_REFERENCE(local_node); + local_port->crs_csi2_local = true; + + remote_port = &remote_swnodes->ports[remote_index]; + remote_node = &remote_swnodes->nodes[ACPI_DEVICE_SWNODE_EP(remote_index)]; + remote_port->remote_ep_ref[0] = SOFTWARE_NODE_REFERENCE(remote_node); + + local_port->ep_props[ACPI_DEVICE_SWNODE_EP_REMOTE_EP] = + PROPERTY_ENTRY_REF_ARRAY("remote-endpoint", + remote_port->remote_ep_ref); + local_port->ep_props[ACPI_DEVICE_SWNODE_EP_BUS_TYPE] = + PROPERTY_ENTRY_U32("bus-type", bus_type); + local_port->ep_props[ACPI_DEVICE_SWNODE_EP_REG] = + PROPERTY_ENTRY_U32("reg", 0); + local_port->port_props[ACPI_DEVICE_SWNODE_PRT_REG] = + PROPERTY_ENTRY_U32("reg", inst->csi2.local_port_instance); + if (GRAPH_PORT_NAME(local_port->port_name, + inst->csi2.local_port_instance)) + acpi_handle_warn(handle, + "name for local port %u too long", + inst->csi2.local_port_instance); + + remote_port->ep_props[ACPI_DEVICE_SWNODE_EP_REMOTE_EP] = + PROPERTY_ENTRY_REF_ARRAY("remote-endpoint", local_port->remote_ep_ref); + remote_port->ep_props[ACPI_DEVICE_SWNODE_EP_BUS_TYPE] = + PROPERTY_ENTRY_U32("bus-type", bus_type); + remote_port->ep_props[ACPI_DEVICE_SWNODE_EP_REG] = + PROPERTY_ENTRY_U32("reg", 0); + remote_port->port_props[ACPI_DEVICE_SWNODE_PRT_REG] = + PROPERTY_ENTRY_U32("reg", + inst->csi2.resource_source.index); + if (GRAPH_PORT_NAME(remote_port->port_name, + inst->csi2.resource_source.index)) + acpi_handle_warn(handle, + "name for remote port %u too long", + inst->csi2.resource_source.index); + } + } + +out_free: kfree(handle_refs); crs_csi2_release(&csi2_all.crs_csi2_head); } + +/* + * Get the index of the next property in the property array, with a given + * maximum values. + */ +#define NEXT_PROPERTY(index, max) \ + (WARN_ON(++(index) > ACPI_DEVICE_SWNODE_##max + 1) ? \ + ACPI_DEVICE_SWNODE_##max : (index) - 1) + +static struct fwnode_handle *get_mipi_port_handle(struct acpi_device *device, + unsigned int port) +{ + static const char mipi_port_prefix[] = "mipi-img-port-"; + char mipi_port_name[sizeof(mipi_port_prefix) + 2]; + + if (snprintf(mipi_port_name, sizeof(mipi_port_name), "%s%u", + mipi_port_prefix, port) >= sizeof(mipi_port_name)) { + acpi_handle_info(acpi_device_handle(device), + "mipi port name too long for port %u\n", port); + return NULL; + } + + return fwnode_get_named_child_node(acpi_fwnode_handle(device), + mipi_port_name); +} + +static void init_port_csi2_common(struct acpi_device *device, + struct fwnode_handle *mipi_port_fwnode, + unsigned int *ep_prop_index, + unsigned int port_nr) +{ + unsigned int port_index = next_csi2_port_index(device->swnodes, port_nr); + struct acpi_device_software_nodes *ads = device->swnodes; + struct acpi_device_software_node_port *port = &ads->ports[port_index]; + unsigned int num_lanes = 0; + u8 val[ARRAY_SIZE(port->data_lanes)]; + int ret; + + *ep_prop_index = ACPI_DEVICE_SWNODE_EP_CLOCK_LANES; + + if (GRAPH_PORT_NAME(port->port_name, port_nr)) + return; + + ads->nodes[ACPI_DEVICE_SWNODE_PRT(port_index)] = + SOFTWARE_NODE(port->port_name, port->port_props, + &ads->nodes[ACPI_DEVICE_SWNODE_ROOT]); + + ret = fwnode_property_read_u8(mipi_port_fwnode, "mipi-img-clock-lane", val); + if (!ret) { + port->ep_props[NEXT_PROPERTY(*ep_prop_index, EP_CLOCK_LANES)] = + PROPERTY_ENTRY_U32("clock-lanes", *val); + } + ret = fwnode_property_count_u8(mipi_port_fwnode, "mipi-img-data-lanes"); + if (ret > 0) { + num_lanes = ret; + + if (num_lanes > ARRAY_SIZE(port->data_lanes)) { + acpi_handle_warn(acpi_device_handle(device), + "too many data lanes (%u)\n", + num_lanes); + num_lanes = ARRAY_SIZE(port->data_lanes); + } + + ret = fwnode_property_read_u8_array(mipi_port_fwnode, "mipi-img-data-lanes", + val, num_lanes); + if (!ret) { + unsigned int i; + + for (i = 0; i < num_lanes; i++) + port->data_lanes[i] = val[i]; + + port->ep_props[NEXT_PROPERTY(*ep_prop_index, EP_DATA_LANES)] = + PROPERTY_ENTRY_U32_ARRAY_LEN("data-lanes", port->data_lanes, + num_lanes); + } + } + + ret = fwnode_property_count_u8(mipi_port_fwnode, "mipi-img-lane-polarities"); + if (ret > 0) { + unsigned int bytes = min_t(unsigned int, ret, sizeof(val)); + + fwnode_property_read_u8_array(mipi_port_fwnode, + "mipi-img-lane-polarities", + val, bytes); + + /* Total number of lanes here is clock lane + data lanes */ + if (bytes * BITS_PER_TYPE(u8) >= 1 + num_lanes) { + unsigned int i; + + /* Move polarity bits to the lane polarity u32 array */ + for (i = 0; i < 1 + num_lanes; i++) + port->lane_polarities[i] = + (bool)(val[i >> 3] & (1 << (i & 7))); + + port->ep_props[NEXT_PROPERTY(*ep_prop_index, EP_LANE_POLARITIES)] = + PROPERTY_ENTRY_U32_ARRAY_LEN("lane-polarities", + port->lane_polarities, + 1 + num_lanes); + } else { + acpi_handle_warn(acpi_device_handle(device), + "too few lane polarity bytes (%u)\n", + bytes); + } + } + + ads->nodes[ACPI_DEVICE_SWNODE_EP(port_index)] = + SOFTWARE_NODE("endpoint@0", ads->ports[port_index].ep_props, + &ads->nodes[ACPI_DEVICE_SWNODE_PRT(port_index)]); +} + +static void init_port_csi2_local(struct acpi_device *device, + unsigned int port_nr) +{ + unsigned int port_index = next_csi2_port_index(device->swnodes, port_nr); + struct fwnode_handle *mipi_port_fwnode = + get_mipi_port_handle(device, port_nr); + struct acpi_device_software_node_port *port = + &device->swnodes->ports[port_index]; + unsigned int ep_prop_index; + int ret; + + init_port_csi2_common(device, mipi_port_fwnode, &ep_prop_index, port_nr); + + ret = fwnode_property_count_u64(mipi_port_fwnode, "mipi-img-link-frequencies"); + if (ret > 0) { + unsigned int num_link_freqs = ret; + + if (num_link_freqs > ARRAY_SIZE(port->link_frequencies)) { + acpi_handle_info(acpi_device_handle(device), + "too many link frequencies %u\n", + num_link_freqs); + num_link_freqs = ARRAY_SIZE(port->link_frequencies); + } + + ret = fwnode_property_read_u64_array(mipi_port_fwnode, + "mipi-img-link-frequencies", + port->link_frequencies, + num_link_freqs); + if (!ret) + port->ep_props[NEXT_PROPERTY(ep_prop_index, EP_LINK_FREQUENCIES)] = + PROPERTY_ENTRY_U64_ARRAY_LEN("link-frequencies", + port->link_frequencies, + num_link_freqs); + else + acpi_handle_info(acpi_device_handle(device), + "can't get link frequencies (%d)\n", + ret); + } + + fwnode_handle_put(mipi_port_fwnode); +} + +static void init_port_csi2_remote(struct acpi_device *device, + unsigned int port_nr) +{ + struct fwnode_handle *mipi_port_fwnode = get_mipi_port_handle(device, port_nr); + unsigned int ep_prop_index; + + init_port_csi2_common(device, mipi_port_fwnode, &ep_prop_index, port_nr); + + fwnode_handle_put(mipi_port_fwnode); +} + +/** + * acpi_init_swnodes - Set up software nodes for properties gathered elsewhere + * + * @device: ACPI device for which the software nodes are initialised + * + * Initialise and register software nodes for properties for which the data is + * gathered elsewhere, e.g. _CRS CSI-2 descriptors. The process itself takes + * place before this function is called. + * + * acpi_scan_lock in scan.c must be held when calling this function. + */ +void acpi_init_swnodes(struct acpi_device *device) +{ + struct acpi_device_software_nodes *ads; + struct acpi_buffer buffer = { .length = ACPI_ALLOCATE_BUFFER }; + acpi_handle handle = acpi_device_handle(device); + struct fwnode_handle *primary; + acpi_status status; + unsigned int i; + int ret; + + device->swnodes = ads = crs_csi2_swnode_get(handle); + if (!ads) + return; + + status = acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer); + if (ACPI_FAILURE(status)) { + acpi_handle_warn(handle, "cannot get path name\n"); + return; + } + + ads->nodes[ACPI_DEVICE_SWNODE_ROOT] = + SOFTWARE_NODE(buffer.pointer, ads->dev_props, NULL); + + for (i = 0; i < ads->num_ports; i++) { + struct acpi_device_software_node_port *port = &ads->ports[i]; + + if (port->crs_csi2_local) + init_port_csi2_local(device, port->port_nr); + else + init_port_csi2_remote(device, port->port_nr); + } + + ret = software_node_register_node_group(ads->nodeptrs); + if (ret < 0) { + acpi_handle_warn(handle, + "cannot register software nodes (%d)!\n", ret); + device->swnodes = NULL; + return; + } + + /* + * Note we can't use set_secondary_fwnode() here as the device's + * primary fwnode hasn't been set yet. + */ + primary = acpi_fwnode_handle(device); + primary->secondary = software_node_fwnode(ads->nodes); +} diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 50de874b8f208..9cc30c9c87080 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -449,10 +449,28 @@ static void acpi_free_power_resources_lists(struct acpi_device *device) } } +static void acpi_free_swnodes(struct acpi_device *device) +{ + struct acpi_device_software_nodes *ads = device->swnodes; + struct fwnode_handle *primary; + + if (!ads) + return; + + software_node_unregister_node_group(ads->nodeptrs); + primary = acpi_fwnode_handle(device); + primary->secondary = NULL; + kfree(ads->nodes[ACPI_DEVICE_SWNODE_ROOT].name); + kfree(ads); + + device->swnodes = NULL; +} + static void acpi_device_release(struct device *dev) { struct acpi_device *acpi_dev = to_acpi_device(dev); + acpi_free_swnodes(acpi_dev); acpi_free_properties(acpi_dev); acpi_free_pnp_ids(&acpi_dev->pnp); acpi_free_power_resources_lists(acpi_dev); @@ -1771,6 +1789,7 @@ void acpi_init_device_object(struct acpi_device *device, acpi_handle handle, acpi_device_get_busid(device); acpi_set_pnp_ids(handle, &device->pnp, type); acpi_init_properties(device); + acpi_init_swnodes(device); acpi_bus_get_flags(device); device->flags.match_driver = false; device->flags.initialized = true; diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index a05fe22c1175c..e05d1c1f6ac23 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -360,15 +360,84 @@ struct acpi_device_data { struct acpi_gpio_mapping; +enum acpi_device_swnode_dev_props { + ACPI_DEVICE_SWNODE_DEV_NUM_OF, + ACPI_DEVICE_SWNODE_DEV_NUM_ENTRIES +}; + +enum acpi_device_swnode_port_props { + ACPI_DEVICE_SWNODE_PRT_REG, + ACPI_DEVICE_SWNODE_PRT_NUM_OF, + ACPI_DEVICE_SWNODE_PRT_NUM_ENTRIES +}; + +enum acpi_device_swnode_ep_props { + ACPI_DEVICE_SWNODE_EP_REMOTE_EP, + ACPI_DEVICE_SWNODE_EP_BUS_TYPE, + ACPI_DEVICE_SWNODE_EP_REG, + ACPI_DEVICE_SWNODE_EP_CLOCK_LANES, + ACPI_DEVICE_SWNODE_EP_DATA_LANES, + ACPI_DEVICE_SWNODE_EP_LANE_POLARITIES, + /* TX only */ + ACPI_DEVICE_SWNODE_EP_LINK_FREQUENCIES, + ACPI_DEVICE_SWNODE_EP_NUM_OF, + ACPI_DEVICE_SWNODE_EP_NUM_ENTRIES +}; + +#define ACPI_DEVICE_SWNODE_ROOT 0 +/* + * Each device has a root swnode plus two times as many nodes as the + * number of CSI-2 ports. + */ +#define ACPI_DEVICE_SWNODE_PRT(port) (1 + 2 * (port)) +#define ACPI_DEVICE_SWNODE_EP(endpoint) \ + (ACPI_DEVICE_SWNODE_PRT(endpoint) + 1) + +#define ACPI_DEVICE_SWNODE_CSI2_DATA_LANES 4 + +/** + * struct acpi_device_software_node_port: Software nodes for MIPI DisCo for + * Imaging support + * @port_name: the name of the port + * @data_lanes: "data-lanes" property values + * @lane_polarities: "lane-polarities" property values + * @link_frequencies: "link_frequencies" property values + * @port_nr: the number of the port + * @crs_crs2_local: whether the _CRS CSI2 record is local to the port (i.e. the + * port is a transmitter port) + * port_props: the port properties + * ep_props: the endpoint properties + * remote_ep_ref: reference to the remote endpoint + */ struct acpi_device_software_node_port { + char port_name[8]; + u32 data_lanes[ACPI_DEVICE_SWNODE_CSI2_DATA_LANES]; + u32 lane_polarities[1 /* clock lane */ + + ACPI_DEVICE_SWNODE_CSI2_DATA_LANES]; + u64 link_frequencies[4]; unsigned int port_nr; + bool crs_csi2_local; + + struct property_entry port_props[ACPI_DEVICE_SWNODE_PRT_NUM_ENTRIES]; + struct property_entry ep_props[ACPI_DEVICE_SWNODE_EP_NUM_ENTRIES]; + + struct software_node_ref_args remote_ep_ref[1]; }; +/** + * struct acpi_device_software_nodes - Software nodes for an ACPI device + * @ports: information related to each port and endpoint within a port + * @nodes: software nodes for root as well as ports and endpoints + * @nodeprts: array of software node pointers, for (un)registering them + * @num_ports: the number of ports + */ struct acpi_device_software_nodes { struct acpi_device_software_node_port *ports; struct software_node *nodes; const struct software_node **nodeptrs; unsigned int num_ports; + + struct property_entry dev_props[ACPI_DEVICE_SWNODE_DEV_NUM_ENTRIES]; }; /* Device */ @@ -377,6 +446,7 @@ struct acpi_device { int device_type; acpi_handle handle; /* no handle for fixed hardware */ struct fwnode_handle fwnode; + struct acpi_device_software_nodes *swnodes; struct list_head wakeup_list; struct list_head del_list; struct acpi_device_status status;