From patchwork Tue Jan 4 07:26:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hector Martin X-Patchwork-Id: 530200 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 41C61C433FE for ; Tue, 4 Jan 2022 07:32:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230139AbiADHcm (ORCPT ); Tue, 4 Jan 2022 02:32:42 -0500 Received: from marcansoft.com ([212.63.210.85]:47772 "EHLO mail.marcansoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233730AbiADHc1 (ORCPT ); Tue, 4 Jan 2022 02:32:27 -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 0E57A41F5D; Tue, 4 Jan 2022 07:32:17 +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 35/35] brcmfmac: common: Add support for external calibration blobs Date: Tue, 4 Jan 2022 16:26:58 +0900 Message-Id: <20220104072658.69756-36-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 The calibration blob for a chip is normally stored in SROM and loaded internally by the firmware. However, Apple ARM64 platforms instead store it as part of platform configuration data, and provide it via the Apple Device Tree. We forward this into the Linux DT in the bootloader. Add support for taking this blob from the DT and loading it into the dongle. The loading mechanism is the same as used for the CLM and TxCap blobs. Reviewed-by: Linus Walleij Signed-off-by: Hector Martin Reviewed-by: Arend van Spriel --- .../broadcom/brcm80211/brcmfmac/common.c | 24 +++++++++++++++++++ .../broadcom/brcm80211/brcmfmac/common.h | 2 ++ .../wireless/broadcom/brcm80211/brcmfmac/of.c | 8 +++++++ 3 files changed, 34 insertions(+) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c index d65308c3f070..ad36e6b5dd47 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c @@ -218,6 +218,23 @@ static int brcmf_c_process_txcap_blob(struct brcmf_if *ifp) return err; } +static int brcmf_c_process_cal_blob(struct brcmf_if *ifp) +{ + struct brcmf_pub *drvr = ifp->drvr; + struct brcmf_mp_device *settings = drvr->settings; + s32 err; + + brcmf_dbg(TRACE, "Enter\n"); + + if (!settings->cal_blob || !settings->cal_size) + return 0; + + brcmf_info("Calibration blob provided by platform, loading\n"); + err = brcmf_c_download_blob(ifp, settings->cal_blob, settings->cal_size, + "calload", "calload_status"); + return err; +} + int brcmf_c_preinit_dcmds(struct brcmf_if *ifp) { struct brcmf_pub *drvr = ifp->drvr; @@ -291,6 +308,13 @@ int brcmf_c_preinit_dcmds(struct brcmf_if *ifp) goto done; } + /* Download external calibration blob, if available */ + err = brcmf_c_process_cal_blob(ifp); + if (err < 0) { + bphy_err(drvr, "download calibration blob file failed, %d\n", err); + goto done; + } + /* query for 'ver' to get version info from firmware */ memset(buf, 0, sizeof(buf)); err = brcmf_fil_iovar_data_get(ifp, "ver", buf, sizeof(buf)); diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h index a88c4a9310f3..f321346edd01 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h @@ -51,6 +51,8 @@ struct brcmf_mp_device { struct brcmfmac_pd_cc *country_codes; const char *board_type; const char *antenna_sku; + void *cal_blob; + int cal_size; union { struct brcmfmac_sdio_pd sdio; } bus; diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c index 085d34176b78..6f885c3210c3 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c @@ -78,6 +78,14 @@ void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type, if (!of_property_read_string(np, "apple,antenna-sku", &prop)) settings->antenna_sku = devm_kstrdup(dev, prop, GFP_KERNEL); + /* The WLAN calibration blob is normally stored in SROM, but Apple + * ARM64 platforms pass it via the DT instead. + */ + prop = of_get_property(np, "brcm,cal-blob", &settings->cal_size); + if (prop && settings->cal_size) + settings->cal_blob = devm_kmemdup(dev, prop, settings->cal_size, + GFP_KERNEL); + /* Set board-type to the first string of the machine compatible prop */ root = of_find_node_by_path("/"); if (root && !settings->board_type) {