From patchwork Tue Jan 4 07:26:39 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hector Martin X-Patchwork-Id: 529891 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 64332C433EF for ; Tue, 4 Jan 2022 07:29:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232187AbiADH36 (ORCPT ); Tue, 4 Jan 2022 02:29:58 -0500 Received: from marcansoft.com ([212.63.210.85]:46580 "EHLO mail.marcansoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232155AbiADH3y (ORCPT ); Tue, 4 Jan 2022 02:29:54 -0500 Received: from [127.0.0.1] (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: hector@marcansoft.com) by mail.marcansoft.com (Postfix) with ESMTPSA id 78F674261F; Tue, 4 Jan 2022 07:29:45 +0000 (UTC) From: Hector Martin To: Kalle Valo , "David S. Miller" , Jakub Kicinski , Rob Herring , "Rafael J. Wysocki" , Len Brown , Arend van Spriel , Franky Lin , Hante Meuleman , Chi-hsien Lin , Wright Feng , Dmitry Osipenko Cc: Hector Martin , Sven Peter , Alyssa Rosenzweig , Mark Kettenis , =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= , Pieter-Paul Giesberts , Linus Walleij , Hans de Goede , "John W. Linville" , "brian m. carlson" , Andy Shevchenko , linux-wireless@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, brcm80211-dev-list.pdl@broadcom.com, SHA-cyfmac-dev-list@infineon.com Subject: [PATCH v2 16/35] brcmfmac: acpi: Add support for fetching Apple ACPI properties Date: Tue, 4 Jan 2022 16:26:39 +0900 Message-Id: <20220104072658.69756-17-marcan@marcan.st> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20220104072658.69756-1-marcan@marcan.st> References: <20220104072658.69756-1-marcan@marcan.st> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org On DT platforms, the module-instance and antenna-sku-info properties are passed in the DT. On ACPI platforms, module-instance is passed via the analogous Apple device property mechanism, while the antenna SKU info is instead obtained via an ACPI method that grabs it from non-volatile storage. Add support for this, to allow proper firmware selection on Apple platforms. Signed-off-by: Hector Martin --- .../broadcom/brcm80211/brcmfmac/Makefile | 2 + .../broadcom/brcm80211/brcmfmac/acpi.c | 47 +++++++++++++++++++ .../broadcom/brcm80211/brcmfmac/common.c | 1 + .../broadcom/brcm80211/brcmfmac/common.h | 9 ++++ 4 files changed, 59 insertions(+) create mode 100644 drivers/net/wireless/broadcom/brcm80211/brcmfmac/acpi.c diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/Makefile b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/Makefile index 13c13504a6e8..19009eb9db93 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/Makefile +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/Makefile @@ -47,3 +47,5 @@ brcmfmac-$(CONFIG_OF) += \ of.o brcmfmac-$(CONFIG_DMI) += \ dmi.o +brcmfmac-$(CONFIG_ACPI) += \ + acpi.o diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/acpi.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/acpi.c new file mode 100644 index 000000000000..2b1a4448b291 --- /dev/null +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/acpi.c @@ -0,0 +1,47 @@ +// SPDX-License-Identifier: ISC +/* + * Copyright The Asahi Linux Contributors + */ + +#include +#include "debug.h" +#include "core.h" +#include "common.h" + +void brcmf_acpi_probe(struct device *dev, enum brcmf_bus_type bus_type, + struct brcmf_mp_device *settings) +{ + acpi_status status; + const union acpi_object *o; + struct acpi_buffer buf = {ACPI_ALLOCATE_BUFFER, NULL}; + struct acpi_device *adev = ACPI_COMPANION(dev); + + if (!adev) + return; + + if (!ACPI_FAILURE(acpi_dev_get_property(adev, "module-instance", + ACPI_TYPE_STRING, &o))) { + brcmf_dbg(INFO, "ACPI module-instance=%s\n", o->string.pointer); + settings->board_type = devm_kasprintf(dev, GFP_KERNEL, + "apple,%s", + o->string.pointer); + } else { + brcmf_dbg(INFO, "No ACPI module-instance\n"); + } + + status = acpi_evaluate_object(adev->handle, "RWCV", NULL, &buf); + o = buf.pointer; + if (!ACPI_FAILURE(status) && o && o->type == ACPI_TYPE_BUFFER && + o->buffer.length >= 2) { + char *antenna_sku = devm_kzalloc(dev, 3, GFP_KERNEL); + + memcpy(antenna_sku, o->buffer.pointer, 2); + brcmf_dbg(INFO, "ACPI RWCV data=%*phN antenna-sku=%s\n", + (int)o->buffer.length, o->buffer.pointer, + antenna_sku); + + settings->antenna_sku = antenna_sku; + } else { + brcmf_dbg(INFO, "No ACPI antenna-sku\n"); + } +} diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c index b8ed851129b4..c84c48e49fde 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c @@ -437,6 +437,7 @@ struct brcmf_mp_device *brcmf_get_module_param(struct device *dev, /* No platform data for this device, try OF and DMI data */ brcmf_dmi_probe(settings, chip, chiprev); brcmf_of_probe(dev, bus_type, settings); + brcmf_acpi_probe(dev, bus_type, settings); } return settings; } diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h index d4aa25d646fe..a88c4a9310f3 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h @@ -73,6 +73,15 @@ static inline void brcmf_dmi_probe(struct brcmf_mp_device *settings, u32 chip, u32 chiprev) {} #endif +#ifdef CONFIG_ACPI +void brcmf_acpi_probe(struct device *dev, enum brcmf_bus_type bus_type, + struct brcmf_mp_device *settings); +#else +static inline void brcmf_acpi_probe(struct device *dev, + enum brcmf_bus_type bus_type, + struct brcmf_mp_device *settings) {} +#endif + u8 brcmf_map_prio_to_prec(void *cfg, u8 prio); u8 brcmf_map_prio_to_aci(void *cfg, u8 prio);