kernel-module-qualcomm: revert to driver qcacld-2.0

Verbatim copy of the recipes in DEY-3.2, using command:
git restore -s dey-3.2/master -- meta-digi-arm/recipes-kernel/kernel-module-qualcomm

Signed-off-by: Isaac Hermida <isaac.hermida@digi.com>
Signed-off-by: Javier Viguera <javier.viguera@digi.com>

meta-digi-arm/recipes-kernel/kernel-module-qualcomm/kernel-module-qualcomm.bb

@@ -1,122 +1,84 @@
-# Copyright (C) 2016-2022 Digi International.
+# Copyright (C) 2016-2021 Digi International.
 
 SUMMARY = "Qualcomm's wireless driver for qca65xx"
-DESCRIPTION = "qcacld-3.0 module"
+DESCRIPTION = "qcacld-2.0 module"
 LICENSE = "ISC"
 LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/ISC;md5=f3b90e78ea0cffb20bf5cca7947a896d"
 
 # Reference Qualcomm tag/version
-PV = "v5.2.0.237G"
+PV = "v4.0.11.213X"
 
-QCACLD_SRCBRANCH = "wlan-cld3.driver.lnx.2.0.r51-rel"
+SRCBRANCH = "qca65X4/master"
-QCA_WIFI_HOST_CMN_SRCBRANCH = "wlan-cmn.driver.lnx.2.0.r51-rel"
+SRCREV = "${AUTOREV}"
-FW_API_SRCBRANCH = "wlan-api.lnx.1.0.c21.2"
+
-MDM_INIT_SRCBRANCH = "wlan-tools.lnx.1.0.c21.2"
+QCOM_GIT_URI = "${@oe.utils.conditional('DIGI_INTERNAL_GIT', '1' , '${DIGI_MTK_GIT}/linux/qcacld-2.0.git;protocol=ssh', '${DIGI_GITHUB_GIT}/qcacld-2.0.git;protocol=https', d)}"
 
 SRC_URI = " \
-    git://git.codelinaro.org/clo/la/platform/vendor/qcom-opensource/wlan/qcacld-3.0.git;protocol=https;branch=${QCACLD_SRCBRANCH};name=qcacld \
+    ${QCOM_GIT_URI};branch=${SRCBRANCH} \
-    git://git.codelinaro.org/clo/la/platform/vendor/qcom-opensource/wlan/qca-wifi-host-cmn.git;protocol=https;branch=${QCA_WIFI_HOST_CMN_SRCBRANCH};destsuffix=qca-wifi-host-cmn;name=qca-wifi-host \
-    git://git.codelinaro.org/clo/la/platform/vendor/qcom-opensource/wlan/fw-api.git;protocol=https;branch=${FW_API_SRCBRANCH};destsuffix=fw-api;name=fw-api \
-    git://git.codelinaro.org/clo/le/qcom-opensource/mdm-init.git;protocol=https;branch=${MDM_INIT_SRCBRANCH};destsuffix=mdm-init;name=mdm-init \
-    file://0001-qcacld-3.0-disable-warnings-as-errors.patch \
-    file://0002-qcacld-3.0-support-ROME-SDIO-build.patch \
-    file://0003-qcacld-3.0-cfg-try-to-get-MACs-from-device-tree-entr.patch \
-    file://0004-qcacld-3.0-Add-proper-check-to-include-qcom-iommu-ut.patch \
-    file://0005-qcacld-3.0-module-parameter-to-enable-p2p-support.patch \
-    file://0006-qcacld-3.0-use-cfg80211_register_netdevice.patch \
-    file://0007-qcacld-3.0-use-ndo_siocdevprivate.patch \
-    file://0001-qca-wifi-host-cmn-fix-buid-issue-for-Rome-SDIO-inter.patch;patchdir=${WORKDIR}/qca-wifi-host-cmn; \
-    file://0002-qca-wifi-host-cmn-fix-build-issue-enabling-debug-for.patch;patchdir=${WORKDIR}/qca-wifi-host-cmn; \
-    file://0003-qca-wifi-host-cmn-fix-panic_notifier_list-undeclared.patch;patchdir=${WORKDIR}/qca-wifi-host-cmn; \
-    file://0004-qca-wifi-host-cmn-fix-sdio-error-on-unload-driver.patch;patchdir=${WORKDIR}/qca-wifi-host-cmn; \
 "
 
-# Tag 'CHSS.LNX_FSL.5.0-01200-QCA6574AUARMSDIOHZ' in all repos
-SRCREV_qcacld = "f1dae2986ae58c68ea740e2c505be9c369547916"
-SRCREV_qca-wifi-host = "ca5e999f4f692a45ae9974a7ad92726deaf7497f"
-SRCREV_fw-api = "62b94874003ef7aced22bba1a076c1e4b5d5a9a9"
-SRCREV_mdm-init = "3fb3bcb9f054eeeb1083bd4f6dbaf733061c5af3"
-
-inherit module
-
-DEPENDS = "virtual/kernel"
-
 # Selects whether the interface is SDIO or PCI
 QUALCOMM_WIFI_INTERFACE ?= "sdio"
-QUALCOMM_WIFI_INTERFACE:ccimx8x = "pci"
+QUALCOMM_WIFI_INTERFACE_ccimx8x = "pci"
 
-WLAN_CONFIG_INI = "${@oe.utils.conditional('QUALCOMM_WIFI_INTERFACE', 'sdio' , \
+SRC_URI_append = " \
-                                           'QCA6574AU.LE.2.2.1_Rome_SDIO_qcacld-3.0.ini', \
-                                           'QCA6574AU.LE.2.2.1_Rome_PCIe_qcacld-3.0.ini', d)}"
-
-SRC_URI:append = " \
     file://81-qcom-wifi.rules \
+    file://qualcomm.sh \
 "
 
 FILES_SDIO = " \
     file://modprobe-qualcomm.conf \
 "
 
-SRC_URI:append = "${@oe.utils.conditional('QUALCOMM_WIFI_INTERFACE', 'sdio' , '${FILES_SDIO}', '', d)}"
+SRC_URI_append = "${@oe.utils.conditional('QUALCOMM_WIFI_INTERFACE', 'sdio' , '${FILES_SDIO}', '', d)}"
 
 S = "${WORKDIR}/git"
 
-WLAN_MODULE_NAME ?= "wlan"
+inherit module
-
-EXTRA_OEMAKE += "CONFIG_WLAN_FEATURE_11W=y \
-                 CONFIG_LINUX_QCMBR=y \
-                 CONFIG_QCA_CLD_WLAN_PROFILE=qca6174 \
-                 CONFIG_WLAN_DISABLE_EXPORT_SYMBOL=y \
-                 MODNAME=${WLAN_MODULE_NAME} \
-"
 
+EXTRA_OEMAKE += "CONFIG_LINUX_QCMBR=y WLAN_OPEN_SOURCE=1"
+# Explicity state it is not a QC platform, if not the driver will try to remap
+# memory that is not allowed in ARMv6 (kernel commit
+# 309caa9cc6ff39d261264ec4ff10e29489afc8f8)
+EXTRA_OEMAKE += "CONFIG_NON_QC_PLATFORM=y"
+# Flag to compile the debug version (1 - enabled, rest of values - disabled)
+EXTRA_OEMAKE += "BUILD_DEBUG_VERSION=0"
 # Flags for SDIO interface with wifi
 FLAGS_SDIO = "CONFIG_CLD_HL_SDIO_CORE=y"
 EXTRA_OEMAKE += "${@oe.utils.conditional('QUALCOMM_WIFI_INTERFACE', 'sdio' , '${FLAGS_SDIO}', '', d)}"
-
 # Flags for PCI interface with wifi
-FLAGS_PCI = "CONFIG_ROME_IF=pci"
+FLAGS_PCI = "CONFIG_ROME_IF=pci CONFIG_HIF_PCI=1 CONFIG_ATH_PCIE_ACCESS_DEBUG=1 CONFIG_ATH_PCIE_MAX_PERF=1"
 EXTRA_OEMAKE += "${@oe.utils.conditional('QUALCOMM_WIFI_INTERFACE', 'pci' , '${FLAGS_PCI}', '', d)}"
+# Flags required for QCA6574
+EXTRA_OEMAKE_append_ccimx8x = " CONFIG_ARCH_MSM=n CONFIG_ARCH_QCOM=n CONFIG_ATH_11AC_TXCOMPACT=1"
 
-# Flag to compile the debug version (y - enabled, n - disabled)
+do_compile_prepend() {
-EXTRA_OEMAKE += "BUILD_DEBUG_VERSION=n"
-
-# Flag to define the maximum vdevs interfaces
-EXTRA_OEMAKE += "CONFIG_WLAN_MAX_VDEVS=4"
-
-do_compile:prepend() {
 	export BUILD_VER=${PV}
 }
 
-do_install:append() {
+do_install_prepend_ccimx6ul() {
+    sed -i -e "s/gVhtTxMCS=2/gVhtTxMCS=0/g" ${WORKDIR}/git/firmware_bin/WCNSS_qcom_cfg.ini
+}
+
+do_install_append() {
 	if [ "${QUALCOMM_WIFI_INTERFACE}" = "sdio" ]; then
 		install -d ${D}${sysconfdir}/modprobe.d
 		install -m 0644 ${WORKDIR}/modprobe-qualcomm.conf ${D}${sysconfdir}/modprobe.d/qualcomm.conf
 	fi
 
 	install -d ${D}${base_libdir}/firmware/wlan/
-	install -m 0644 ${WORKDIR}/mdm-init/wlan_standalone/${WLAN_CONFIG_INI} ${D}${base_libdir}/firmware/wlan/qcom_cfg.ini
+	install -m 0644 ${WORKDIR}/git/firmware_bin/WCNSS_cfg.dat ${D}${base_libdir}/firmware/wlan/cfg.dat
-	# Set regulatory STRICT mode
+	install -m 0644 ${WORKDIR}/git/firmware_bin/WCNSS_qcom_cfg.ini ${D}${base_libdir}/firmware/wlan/qcom_cfg.ini
-	sed -i -e "s/gRegulatoryChangeCountry=1/gRegulatoryChangeCountry=0/g" ${D}${base_libdir}/firmware/wlan/qcom_cfg.ini
+	install -d ${D}${sysconfdir}/udev/scripts
-	# Disable SIFS Burst support
+	install -m 0755 ${WORKDIR}/qualcomm.sh ${D}${sysconfdir}/udev/scripts/
-	sed -i -e "s/gEnableSifsBurst=1/gEnableSifsBurst=0/g" ${D}${base_libdir}/firmware/wlan/qcom_cfg.ini
-	# Enable channel bonding on 2.4GHz band
-	sed -i -e "/^#Channel Bonding/a gChannelBondingMode24GHz=1" ${D}${base_libdir}/firmware/wlan/qcom_cfg.ini
-	# Disable 802.11d support
-	sed -i -e "s/g11dSupportEnabled=1/g11dSupportEnabled=0/g" ${D}${base_libdir}/firmware/wlan/qcom_cfg.ini
-
 	install -d ${D}${sysconfdir}/udev/rules.d
 	install -m 0644 ${WORKDIR}/81-qcom-wifi.rules ${D}${sysconfdir}/udev/rules.d/
 }
 
-do_install:append:ccimx6ul() {
+FILES_${PN} += " \
-	# Set MCS value to MCS0-7
+    ${sysconfdir}/modprobe.d/qualcomm.conf \
-	sed -i -e "s/gVhtTxMCS=2/gVhtTxMCS=0/g" ${D}${base_libdir}/firmware/wlan/qcom_cfg.ini
-}
-
-FILES:${PN} += " \
-    ${@oe.utils.conditional('QUALCOMM_WIFI_INTERFACE', 'sdio' , '${sysconfdir}/modprobe.d/qualcomm.conf', '', d)} \
     ${sysconfdir}/udev/ \
+    ${base_libdir}/firmware/wlan/cfg.dat \
     ${base_libdir}/firmware/wlan/qcom_cfg.ini \
 "
 

meta-digi-arm/recipes-kernel/kernel-module-qualcomm/kernel-module-qualcomm/0001-qca-wifi-host-cmn-fix-buid-issue-for-Rome-SDIO-inter.patch

@@ -1,115 +0,0 @@
-From: Xueqiang Gong <quic_gongx@quicinc.com>
-Date: Fri, 1 Apr 2022 15:52:16 +0800
-Subject: [PATCH] qca-wifi-host-cmn: fix buid issue for Rome SDIO interface
-
-Change-Id: I0df0490bf9150cc3f57f27f9818dccf98831a615
-Signed-off-by: Xueqiang Gong <quic_gongx@quicinc.com>
----
- hif/src/dispatcher/multibus.c                   | 5 +++++
- hif/src/hif_main.c                              | 4 ++++
- hif/src/sdio/hif_sdio_dev.h                     | 2 +-
- hif/src/sdio/if_sdio.h                          | 2 +-
- hif/src/sdio/native_sdio/include/hif_internal.h | 4 ++--
- hif/src/sdio/native_sdio/src/hif.c              | 2 +-
- hif/src/sdio/transfer/mailbox.h                 | 2 +-
- 7 files changed, 15 insertions(+), 6 deletions(-)
-
-diff --git a/hif/src/dispatcher/multibus.c b/hif/src/dispatcher/multibus.c
-index 06e70f01d39c..f9b2b6bb3ea8 100644
---- a/hif/src/dispatcher/multibus.c
-+++ b/hif/src/dispatcher/multibus.c
-@@ -34,6 +34,11 @@
- #include "dummy.h"
- #include "qdf_module.h"
- 
-+#ifdef HIF_SDIO
-+#include "hif_exec.h"
-+#endif
-+
-+
- /**
-  * hif_initialize_default_ops() - initializes default operations values
-  *
-diff --git a/hif/src/hif_main.c b/hif/src/hif_main.c
-index b5140cc1e58e..a6b4d438ab77 100644
---- a/hif/src/hif_main.c
-+++ b/hif/src/hif_main.c
-@@ -972,7 +972,11 @@ void hif_close(struct hif_opaque_softc *hif_ctx)
- 	}
- 
- 	hif_uninit_rri_on_ddr(scn);
-+#if (defined(HIF_PCI) || defined(HIF_SNOC) || defined(HIF_AHB) || \
-+		 defined(HIF_IPCI))
- 	hif_cleanup_static_buf_to_target(scn);
-+#endif
-+
- 	hif_cpuhp_unregister(scn);
- 
- 	hif_bus_close(scn);
-diff --git a/hif/src/sdio/hif_sdio_dev.h b/hif/src/sdio/hif_sdio_dev.h
-index 7ee6582e6aa8..544a57e4381a 100644
---- a/hif/src/sdio/hif_sdio_dev.h
-+++ b/hif/src/sdio/hif_sdio_dev.h
-@@ -157,7 +157,7 @@ QDF_STATUS hif_enable_func(struct hif_softc *ol_sc, struct hif_sdio_dev *device,
- QDF_STATUS hif_disable_func(struct hif_sdio_dev *device,
- 			    struct sdio_func *func,
- 			    bool reset);
--A_STATUS hif_sdio_probe(struct hif_softc *ol_sc,
-+QDF_STATUS hif_sdio_probe(struct hif_softc *ol_sc,
- 			struct sdio_func *func,
- 			struct hif_sdio_dev *device);
- #endif /* HIF_SDIO_DEV_H_ */
-diff --git a/hif/src/sdio/if_sdio.h b/hif/src/sdio/if_sdio.h
-index a71e61ecb325..c5ad71b0c062 100644
---- a/hif/src/sdio/if_sdio.h
-+++ b/hif/src/sdio/if_sdio.h
-@@ -67,7 +67,7 @@ static inline void athdiag_procfs_remove(void)
- }
- #endif
- 
--#define DMA_MAPPING_ERROR(dev, addr) dma_mapping_error((dev), (addr))
-+//#define DMA_MAPPING_ERROR(dev, addr) dma_mapping_error((dev), (addr))
- 
- int ath_sdio_probe(void *context, void *hif_handle);
- void ath_sdio_remove(void *context, void *hif_handle);
-diff --git a/hif/src/sdio/native_sdio/include/hif_internal.h b/hif/src/sdio/native_sdio/include/hif_internal.h
-index 41001c848ae9..e5c7df088241 100644
---- a/hif/src/sdio/native_sdio/include/hif_internal.h
-+++ b/hif/src/sdio/native_sdio/include/hif_internal.h
-@@ -419,8 +419,8 @@ void hif_sdio_quirk_write_cccr(struct hif_softc *ol_sc, struct sdio_func *func);
- int hif_sdio_quirk_mod_strength(struct hif_softc *ol_sc,
- 				struct sdio_func *func);
- int hif_sdio_quirk_async_intr(struct hif_softc *ol_sc, struct sdio_func *func);
--int hif_sdio_set_bus_speed(struct hif_softc *ol_sc, struct sdio_func *func);
--int hif_sdio_set_bus_width(struct hif_softc *ol_sc, struct sdio_func *func);
-+QDF_STATUS hif_sdio_set_bus_speed(struct hif_softc *ol_sc, struct sdio_func *func);
-+QDF_STATUS hif_sdio_set_bus_width(struct hif_softc *ol_sc, struct sdio_func *func);
- QDF_STATUS hif_sdio_func_disable(struct hif_sdio_dev *device,
- 				 struct sdio_func *func,
- 				 bool reset);
-diff --git a/hif/src/sdio/native_sdio/src/hif.c b/hif/src/sdio/native_sdio/src/hif.c
-index 9ca2e21ca724..d52eee248a3e 100644
---- a/hif/src/sdio/native_sdio/src/hif.c
-+++ b/hif/src/sdio/native_sdio/src/hif.c
-@@ -348,7 +348,7 @@ QDF_STATUS hif_sdio_probe(struct hif_softc *ol_sc,
- 		pld_hif_sdio_get_virt_ramdump_mem(&func->dev,
- 						  &scn->ramdump_size);
- 	if (!scn->ramdump_base || !scn->ramdump_size) {
--		hf_err("Failed ramdump res alloc - base:%s, len:%lu",
-+		hif_err("Failed ramdump res alloc - base:%s, len:%lu",
- 			scn->ramdump_base ? "ok" : "null",
- 			scn->ramdump_size);
- 	} else {
-diff --git a/hif/src/sdio/transfer/mailbox.h b/hif/src/sdio/transfer/mailbox.h
-index 3e5913215241..36f3e9860ac6 100644
---- a/hif/src/sdio/transfer/mailbox.h
-+++ b/hif/src/sdio/transfer/mailbox.h
-@@ -20,7 +20,7 @@
- 
- 
- #ifndef _MAILBOX_H_
--#define _MAILBOX_H__
-+#define _MAILBOX_H_
- 
- #include "a_debug.h"
- #include "hif_sdio_dev.h"

meta-digi-arm/recipes-kernel/kernel-module-qualcomm/kernel-module-qualcomm/0001-qcacld-3.0-disable-warnings-as-errors.patch

@@ -1,25 +0,0 @@
-From: Javier Viguera <javier.viguera@digi.com>
-Date: Mon, 13 Jun 2022 17:39:29 +0200
-Subject: [PATCH] qcacld-3.0: disable warnings as errors
-
-Building the kernel module under Yocto (with new version of GCC
-compiler) is failing because '-Werror' is converting compilation
-warnings into errors.
-
-Signed-off-by: Javier Viguera <javier.viguera@digi.com>
----
- Kbuild | 1 -
- 1 file changed, 1 deletion(-)
-
-diff --git a/Kbuild b/Kbuild
-index ad086656cca2..50c01ef223c1 100644
---- a/Kbuild
-+++ b/Kbuild
-@@ -2804,7 +2804,6 @@ ccflags-y += $(INCS)
- 
- cppflags-y +=	-DANI_OS_TYPE_ANDROID=6 \
- 		-Wall\
--		-Werror\
- 		-D__linux__
- 
- cppflags-$(CONFIG_PTT_SOCK_SVC_ENABLE) += -DPTT_SOCK_SVC_ENABLE

meta-digi-arm/recipes-kernel/kernel-module-qualcomm/kernel-module-qualcomm/0002-qca-wifi-host-cmn-fix-build-issue-enabling-debug-for.patch

@@ -1,49 +0,0 @@
-From: Arturo Buzarra <arturo.buzarra@digi.com>
-Date: Tue, 17 May 2022 15:50:32 +0200
-Subject: [PATCH] qca-wifi-host-cmn: fix build issue enabling debug for SDIO
- interface
-
-Signed-off-by: Arturo Buzarra <arturo.buzarra@digi.com>
----
- hif/src/sdio/native_sdio/src/dev_quirks.c | 6 +++++-
- 1 file changed, 5 insertions(+), 1 deletion(-)
-
-diff --git a/hif/src/sdio/native_sdio/src/dev_quirks.c b/hif/src/sdio/native_sdio/src/dev_quirks.c
-index a94ec61d0b62..b5e70a51ddcf 100644
---- a/hif/src/sdio/native_sdio/src/dev_quirks.c
-+++ b/hif/src/sdio/native_sdio/src/dev_quirks.c
-@@ -267,8 +267,9 @@ void hif_sdio_quirk_write_cccr(struct hif_softc *ol_sc, struct sdio_func *func)
- 				err);
- 		else
- 			hif_info("%s Write CCCR 0x%02X to 0x%02X OK",
-+				 __func__,
- 				 (unsigned int)writecccr1,
--				 writecccr1value);
-+				 (unsigned int)writecccr1value);
- 	}
- 
- 	if (writecccr2) {
-@@ -281,6 +282,7 @@ void hif_sdio_quirk_write_cccr(struct hif_softc *ol_sc, struct sdio_func *func)
- 				err);
- 		else
- 			hif_info("%s Write CCCR 0x%02X to 0x%02X OK",
-+				 __func__,
- 				 (unsigned int)writecccr2,
- 				 (unsigned int)writecccr2value);
- 	}
-@@ -294,6 +296,7 @@ void hif_sdio_quirk_write_cccr(struct hif_softc *ol_sc, struct sdio_func *func)
- 				err);
- 		else
- 			hif_info("%s Write CCCR 0x%02X to 0x%02X OK",
-+				 __func__,
- 				 (unsigned int)writecccr3,
- 				 (unsigned int)writecccr3value);
- 	}
-@@ -307,6 +310,7 @@ void hif_sdio_quirk_write_cccr(struct hif_softc *ol_sc, struct sdio_func *func)
- 				err);
- 		else
- 			hif_info("%s Write CCCR 0x%02X to 0x%02X OK",
-+				 __func__,
- 				 (unsigned int)writecccr4,
- 				 (unsigned int)writecccr4value);
- 	}

meta-digi-arm/recipes-kernel/kernel-module-qualcomm/kernel-module-qualcomm/0002-qcacld-3.0-support-ROME-SDIO-build.patch

@@ -1,34 +0,0 @@
-From: Xueqiang Gong <quic_gongx@quicinc.com>
-Date: Fri, 1 Apr 2022 15:37:06 +0800
-Subject: [PATCH] qcacld-3.0: support ROME SDIO build
-
-Change-Id: Ifb642aaac6a3da212b0720737e9685b9ea9179ce
-Signed-off-by: Xueqiang Gong <quic_gongx@quicinc.com>
----
- configs/qca6174_defconfig                          | 2 +-
- core/mac/src/sys/legacy/src/utils/src/parser_api.c | 0
- core/sme/inc/csr_api.h                             | 0
- 3 files changed, 1 insertion(+), 1 deletion(-)
- mode change 100755 => 100644 core/mac/src/sys/legacy/src/utils/src/parser_api.c
- mode change 100755 => 100644 core/sme/inc/csr_api.h
-
-diff --git a/configs/qca6174_defconfig b/configs/qca6174_defconfig
-index fac64fddf009..b9145ba7cb07 100644
---- a/configs/qca6174_defconfig
-+++ b/configs/qca6174_defconfig
-@@ -391,8 +391,8 @@ endif
- ifeq ($(CONFIG_ROME_IF),sdio)
- 	CONFIG_HIF_SDIO := y
- 	CONFIG_TX_DESC_HI_PRIO_RESERVE := y
--	CONFIG_PER_VDEV_TX_DESC_POOL := y
- 	CONFIG_FEATURE_HL_GROUP_CREDIT_FLOW_CONTROL := y
-+	CONFIG_TGT_NUM_MSDU_DESC := 0
- endif
- 
- ifeq ($(CONFIG_ROME_IF),snoc)
-diff --git a/core/mac/src/sys/legacy/src/utils/src/parser_api.c b/core/mac/src/sys/legacy/src/utils/src/parser_api.c
-old mode 100755
-new mode 100644
-diff --git a/core/sme/inc/csr_api.h b/core/sme/inc/csr_api.h
-old mode 100755
-new mode 100644

meta-digi-arm/recipes-kernel/kernel-module-qualcomm/kernel-module-qualcomm/0003-qca-wifi-host-cmn-fix-panic_notifier_list-undeclared.patch

@@ -1,28 +0,0 @@
-From: Javier Viguera <javier.viguera@digi.com>
-Date: Mon, 13 Jun 2022 17:49:45 +0200
-Subject: [PATCH] qca-wifi-host-cmn: fix panic_notifier_list undeclared build
- failure
-
-On kernels >= 5.14 a new header file include is needed. Otherwise the
-build fails with: "error: 'panic_notifier_list' undeclared"
-
-Signed-off-by: Javier Viguera <javier.viguera@digi.com>
----
- utils/logging/src/wlan_logging_sock_svc.c | 4 ++++
- 1 file changed, 4 insertions(+)
-
-diff --git a/utils/logging/src/wlan_logging_sock_svc.c b/utils/logging/src/wlan_logging_sock_svc.c
-index a1266fed817d..e40779e032dd 100644
---- a/utils/logging/src/wlan_logging_sock_svc.c
-+++ b/utils/logging/src/wlan_logging_sock_svc.c
-@@ -36,6 +36,10 @@
- #include <qdf_event.h>
- #include <qdf_module.h>
- 
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 14, 0)
-+#include <linux/panic_notifier.h>
-+#endif
-+
- #ifdef CNSS_GENL
- #include <net/cnss_nl.h>
- #endif

meta-digi-arm/recipes-kernel/kernel-module-qualcomm/kernel-module-qualcomm/0003-qcacld-3.0-cfg-try-to-get-MACs-from-device-tree-entr.patch

@@ -1,148 +0,0 @@
-From: Arturo Buzarra <arturo.buzarra@digi.com>
-Date: Wed, 18 May 2022 10:58:20 +0200
-Subject: [PATCH] qcacld-3.0: cfg: try to get MACs from device tree entries
- before reading 'wlan_mac.bin' file
-
-This commits adds support to read the MAC addresses from symbolic link files
-('wlan_macX' files inside 'wlan' directory) pointing to device tree MAC entries
-('/proc/device-tree/wireless/mac-addressX').
-If this read fails, the 'wlan/wlan_mac.bin' file contents are parsed.
-
-This change avoids the dynamic creation of the 'wlan_mac.bin' configuration file
-in runtime, especially for Android.
-
-https://onedigi.atlassian.net/browse/ADK4A-1585
-https://onedigi.atlassian.net/browse/DEL-7916
-
-Signed-off-by: Isaac Hermida <isaac.hermida@digi.com>
-Signed-off-by: Tatiana Leon <tatiana.leon@digi.com>
-(based on qcacld-2.0 0a92f5d9e8df644de74e74f152ed6ff3dd8d3369)
-Signed-off-by: Arturo Buzarra <arturo.buzarra@digi.com>
----
- core/hdd/inc/wlan_hdd_cfg.h  |  1 +
- core/hdd/inc/wlan_hdd_misc.h |  2 ++
- core/hdd/src/wlan_hdd_cfg.c  | 65 ++++++++++++++++++++++++++++++++++++
- core/hdd/src/wlan_hdd_main.c |  6 ++++
- 4 files changed, 74 insertions(+)
-
-diff --git a/core/hdd/inc/wlan_hdd_cfg.h b/core/hdd/inc/wlan_hdd_cfg.h
-index 36aa010db916..1527aaf87e12 100644
---- a/core/hdd/inc/wlan_hdd_cfg.h
-+++ b/core/hdd/inc/wlan_hdd_cfg.h
-@@ -278,6 +278,7 @@ struct hdd_config {
-  */
- eCsrRoamWmmUserModeType hdd_to_csr_wmm_mode(uint8_t mode);
- 
-+QDF_STATUS hdd_update_mac_from_dt(struct hdd_context *hdd_ctx);
- QDF_STATUS hdd_update_mac_config(struct hdd_context *hdd_ctx);
- QDF_STATUS hdd_set_sme_config(struct hdd_context *hdd_ctx);
- QDF_STATUS hdd_set_policy_mgr_user_cfg(struct hdd_context *hdd_ctx);
-diff --git a/core/hdd/inc/wlan_hdd_misc.h b/core/hdd/inc/wlan_hdd_misc.h
-index b105df1b3a98..6d9bf450efe1 100644
---- a/core/hdd/inc/wlan_hdd_misc.h
-+++ b/core/hdd/inc/wlan_hdd_misc.h
-@@ -44,9 +44,11 @@
- #ifdef MSM_PLATFORM
- #define WLAN_INI_FILE              "wlan/qca_cld/" PREFIX "WCNSS_qcom_cfg.ini"
- #define WLAN_MAC_FILE              "wlan/qca_cld/" PREFIX "wlan_mac.bin"
-+#define WLAN_MAC_DT_FILE           "wlan/qca_cld/" PREFIX "wlan_mac"
- #else
- #define WLAN_INI_FILE              "wlan/" PREFIX "qcom_cfg.ini"
- #define WLAN_MAC_FILE              "wlan/" PREFIX "wlan_mac.bin"
-+#define WLAN_MAC_DT_FILE           "wlan/" PREFIX "wlan_mac"
- #endif /* MSM_PLATFORM */
- 
- #endif /* WLAN_HDD_MISC_H */
-diff --git a/core/hdd/src/wlan_hdd_cfg.c b/core/hdd/src/wlan_hdd_cfg.c
-index b12e42c74c69..c921a9364242 100644
---- a/core/hdd/src/wlan_hdd_cfg.c
-+++ b/core/hdd/src/wlan_hdd_cfg.c
-@@ -199,6 +199,71 @@ int hdd_firmware_request_nowarn(const struct firmware **fw,
- }
- #endif
- 
-+/**
-+ * hdd_update_mac_from_dt() - update MAC address from device tree
-+ * @hdd_ctx: the pointer to hdd context
-+ *
-+ * It overwrites the MAC address if device tree entries exist.
-+ *
-+ * Return: QDF_STATUS_SUCCESS if the MAC address is found from device tree
-+ *      and overwritten, otherwise QDF_STATUS_E_INVAL
-+ */
-+QDF_STATUS hdd_update_mac_from_dt(struct hdd_context *hdd_ctx)
-+{
-+	int status, i = 0;
-+	const struct firmware *fw = NULL;
-+	char fName[20];
-+	int max_mac_addr = QDF_MAX_CONCURRENCY_PERSONA;
-+	tSirMacAddr custom_mac_addr;
-+
-+	QDF_STATUS qdf_status = QDF_STATUS_SUCCESS;
-+
-+	for (i = 0; i < max_mac_addr; i++)
-+	{
-+		sprintf(fName, WLAN_MAC_DT_FILE "%d", i);
-+
-+		status = hdd_firmware_request_nowarn(&fw, fName,
-+						     hdd_ctx->parent_dev);
-+		if (!status && fw && fw->data && fw->size)
-+		{
-+			/* Successfully read mac from device tree */
-+			qdf_mem_copy((uint8_t *)&hdd_ctx->provisioned_mac_addr[i].bytes[0],
-+				     fw->data, QDF_MAC_ADDR_SIZE);
-+			hdd_ctx->num_provisioned_addr++;
-+		}
-+		else
-+		{
-+			hdd_err("Reading MAC address from device tree failed (%s)", fName);
-+			status = 1;
-+		}
-+		release_firmware(fw);
-+		fw = NULL;
-+
-+		/* Only fail if the first MAC cannot be read. */
-+		if (status && i == 0) {
-+			qdf_status = QDF_STATUS_E_FAILURE;
-+			goto dt_exit;
-+		}
-+	}
-+
-+	if (hdd_ctx->num_provisioned_addr != 0 && hdd_ctx->num_provisioned_addr <= max_mac_addr) {
-+		hdd_info("%d MAC addresses provided from device tree", hdd_ctx->num_provisioned_addr);
-+	} else {
-+		hdd_err("invalid number of MAC address provided, nMac = %d", hdd_ctx->num_provisioned_addr);
-+		qdf_status = QDF_STATUS_E_INVAL;
-+		goto dt_exit;
-+	}
-+
-+	qdf_mem_copy(&custom_mac_addr,
-+		     &hdd_ctx->provisioned_mac_addr[0].bytes[0],
-+		     sizeof(tSirMacAddr));
-+
-+	sme_set_custom_mac_addr(custom_mac_addr);
-+
-+dt_exit:
-+	return qdf_status;
-+}
-+
- /**
-  * hdd_update_mac_config() - update MAC address from cfg file
-  * @hdd_ctx: the pointer to hdd context
-diff --git a/core/hdd/src/wlan_hdd_main.c b/core/hdd/src/wlan_hdd_main.c
-index 0043de21f10a..03138b61ce5d 100644
---- a/core/hdd/src/wlan_hdd_main.c
-+++ b/core/hdd/src/wlan_hdd_main.c
-@@ -13590,6 +13590,12 @@ static int hdd_initialize_mac_address(struct hdd_context *hdd_ctx)
- 		return ret;
- 	}
- 
-+	status = hdd_update_mac_from_dt(hdd_ctx);
-+	if (QDF_IS_STATUS_SUCCESS(status)) {
-+		hdd_info("using MAC address from device tree");
-+		return 0;
-+	}
-+
- 	status = hdd_update_mac_config(hdd_ctx);
- 	if (QDF_IS_STATUS_SUCCESS(status)) {
- 		hdd_info("using MAC address from wlan_mac.bin");

meta-digi-arm/recipes-kernel/kernel-module-qualcomm/kernel-module-qualcomm/0004-qca-wifi-host-cmn-fix-sdio-error-on-unload-driver.patch

@@ -1,29 +0,0 @@
-From: Isaac Hermida <isaac.hermida@digi.com>
-Date: Mon, 18 Jul 2022 09:41:51 +0200
-Subject: [PATCH] sdio: fix sdio error on unload driver
-
-macro TARGET_DUMP_FOR_NON_QC_PLATFORM does not exist, and that code does not
-apply for our platform, so remove that to avoid unload driver error.
-
-https://onedigi.atlassian.net/browse/DEL-7986
-
-Signed-off-by: Isaac Hermida <isaac.hermida@digi.com>
----
- hif/src/sdio/native_sdio/src/hif.c | 4 ----
- 1 file changed, 4 deletions(-)
-
-diff --git a/hif/src/sdio/native_sdio/src/hif.c b/hif/src/sdio/native_sdio/src/hif.c
-index d52eee248a3e..d4804070f500 100644
---- a/hif/src/sdio/native_sdio/src/hif.c
-+++ b/hif/src/sdio/native_sdio/src/hif.c
-@@ -893,10 +893,6 @@ static A_STATUS hif_sdio_remove(void *context, void *hif_handle)
- 
- 	athdiag_procfs_remove();
- 
--#ifndef TARGET_DUMP_FOR_NON_QC_PLATFORM
--	iounmap(scn->ramdump_base);
--#endif
--
- 	HIF_EXIT();
- 
- 	return 0;

meta-digi-arm/recipes-kernel/kernel-module-qualcomm/kernel-module-qualcomm/0004-qcacld-3.0-Add-proper-check-to-include-qcom-iommu-ut.patch

@@ -1,27 +0,0 @@
-From: Yue Ma <yuem@codeaurora.org>
-Date: Wed, 30 Jun 2021 17:22:34 -0700
-Subject: [PATCH] qcacld-3.0: Add proper check to include qcom-iommu-util.h
-
-qcom-iommu-util.h is a QCOM only file for MSM platforms, so only
-include it when MSM_PLATFORM is defined to avoid build issues
-from other non-QCOM platforms like X86.
-
-Change-Id: I5f32fbe05abe4d7aff451031f0859f774ce1c507
-CRs-fixed: 3721214
----
- core/cds/src/cds_api.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/core/cds/src/cds_api.c b/core/cds/src/cds_api.c
-index d135759ac426..4fddb614889d 100644
---- a/core/cds/src/cds_api.c
-+++ b/core/cds/src/cds_api.c
-@@ -36,7 +36,7 @@
- #include "wlan_hdd_power.h"
- #include "wlan_hdd_tsf.h"
- #include <linux/vmalloc.h>
--#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 9, 0))
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 9, 0)) && defined(MSM_PLATFORM)
- #include <linux/qcom-iommu-util.h>
- #endif
- #include <scheduler_core.h>

meta-digi-arm/recipes-kernel/kernel-module-qualcomm/kernel-module-qualcomm/0005-qcacld-3.0-module-parameter-to-enable-p2p-support.patch

@@ -1,51 +0,0 @@
-From: Isaac Hermida <isaac.hermida@digi.com>
-Date: Wed, 22 Jun 2022 10:51:01 +0200
-Subject: [PATCH] add a module parameter to enable p2p support
-
-enable or disable the P2P support based on the enable_p2p module
-parameter.
-
-(partial cherry-pick of dbdf5ff9a3f9c6ae0a153395c382384b3dfc7738
-in qcacld-2.0)
-
-https://onedigi.atlassian.net/browse/DEL-7986
-https://onedigi.atlassian.net/browse/DEL-6503
-
-Signed-off-by: Isaac Hermida <isaac.hermida@digi.com>
----
- core/hdd/src/wlan_hdd_main.c | 11 +++++++++++
- 1 file changed, 11 insertions(+)
-
-diff --git a/core/hdd/src/wlan_hdd_main.c b/core/hdd/src/wlan_hdd_main.c
-index 03138b61ce5d..a866a90110f6 100644
---- a/core/hdd/src/wlan_hdd_main.c
-+++ b/core/hdd/src/wlan_hdd_main.c
-@@ -271,6 +271,10 @@ static struct attribute *attrs[] = {
- #endif
- #endif
- 
-+#ifdef WLAN_OPEN_P2P_INTERFACE
-+static int enable_p2p = -1;
-+#endif
-+
- /* the Android framework expects this param even though we don't use it */
- #define BUF_LEN 20
- static char fwpath_buffer[BUF_LEN];
-@@ -15005,6 +15009,10 @@ static QDF_STATUS hdd_open_p2p_interface(struct hdd_context *hdd_ctx)
- 	bool p2p_dev_addr_admin;
- 	bool is_p2p_locally_administered = false;
- 
-+	hdd_info("P2P interface %s", enable_p2p == 1 ? "enabled" : "disabled");
-+	if (enable_p2p != 1)
-+		return QDF_STATUS_SUCCESS;
-+
- 	cfg_p2p_get_device_addr_admin(hdd_ctx->psoc, &p2p_dev_addr_admin);
- 
- 	if (p2p_dev_addr_admin) {
-@@ -19521,3 +19529,6 @@ static const struct kernel_param_ops timer_multiplier_ops = {
- 
- module_param_cb(timer_multiplier, &timer_multiplier_ops, NULL, 0644);
- 
-+#ifdef WLAN_OPEN_P2P_INTERFACE
-+module_param(enable_p2p, int, S_IRUSR | S_IRGRP | S_IROTH);
-+#endif

meta-digi-arm/recipes-kernel/kernel-module-qualcomm/kernel-module-qualcomm/0006-qcacld-3.0-use-cfg80211_register_netdevice.patch

@@ -1,47 +0,0 @@
-From: Alan Chen <quic_alache@quicinc.com>
-Date: Thu, 17 Feb 2022 13:30:20 -0800
-Subject: [PATCH] qcacld-3.0: Use cfg80211_register_netdevice() for kernel
- 5.12+
-
-For Kernel 5.12+ in order to be in line with cfg80211 changes
-in upstream code, use cfg80211_register_netdevice() and
-cfg80211_unregister_netdevice() when request to register device is
-coming from add virtual interface.
-
-(partial cherry pick from commit 40a7b4a2f97c7f2dc62944963a72f0f0c64d83c6)
-
-https://onedigi.atlassian.net/browse/DEL-7986
-
-Signed-off-by: Isaac Hermida <isaac.hermida@digi.com>
----
- core/hdd/src/wlan_hdd_main.c | 8 ++++++++
- 1 file changed, 8 insertions(+)
-
-diff --git a/core/hdd/src/wlan_hdd_main.c b/core/hdd/src/wlan_hdd_main.c
-index a866a90110f6..235b53cbb94c 100644
---- a/core/hdd/src/wlan_hdd_main.c
-+++ b/core/hdd/src/wlan_hdd_main.c
-@@ -5577,7 +5577,11 @@ static QDF_STATUS hdd_register_interface(struct hdd_adapter *adapter, bool rtnl_
- 			}
- 		}
- 
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 12, 0)
-+		ret = cfg80211_register_netdevice(dev);
-+#else
- 		ret = register_netdevice(dev);
-+#endif
- 		if (ret) {
- 			hdd_err("register_netdevice(%s) failed, err = 0x%x",
- 				dev->name, ret);
-@@ -6289,7 +6293,11 @@ static void hdd_cleanup_adapter(struct hdd_context *hdd_ctx,
- 
- 	if (test_bit(NET_DEVICE_REGISTERED, &adapter->event_flags)) {
- 		if (rtnl_held)
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 12, 0)
-+			cfg80211_unregister_netdevice(dev);
-+#else
- 			unregister_netdevice(dev);
-+#endif
- 		else
- 			unregister_netdev(dev);
- 		/*

meta-digi-arm/recipes-kernel/kernel-module-qualcomm/kernel-module-qualcomm/0007-qcacld-3.0-use-ndo_siocdevprivate.patch

@@ -1,84 +0,0 @@
-From: Isaac Hermida <isaac.hermida@digi.com>
-Date: Wed, 17 Aug 2022 19:02:13 +0200
-Subject: [PATCH] use ndo_siocdevprivate instead for kernel 5.15+
-
-See kernel commits
-  b9067f5dc4a07c8e24e01a1b277c6722d91be39e
-  a554bf96b49db4c208e305ae92546422e9489380
-
-This solves the FTM mode in kernel 5.15+
-
-Signed-off-by: Isaac Hermida <isaac.hermida@digi.com>
----
- core/hdd/src/wlan_hdd_hostapd.c | 4 ++++
- core/hdd/src/wlan_hdd_ioctl.c   | 6 +++++-
- core/hdd/src/wlan_hdd_ioctl.h   | 6 +++++-
- core/hdd/src/wlan_hdd_main.c    | 4 ++++
- 4 files changed, 18 insertions(+), 2 deletions(-)
-
-diff --git a/core/hdd/src/wlan_hdd_hostapd.c b/core/hdd/src/wlan_hdd_hostapd.c
-index 2f35e9c5e7e3..2da3202deae6 100644
---- a/core/hdd/src/wlan_hdd_hostapd.c
-+++ b/core/hdd/src/wlan_hdd_hostapd.c
-@@ -3534,7 +3534,11 @@ const struct net_device_ops net_ops_struct = {
- 	.ndo_tx_timeout = hdd_softap_tx_timeout,
- 	.ndo_get_stats = hdd_get_stats,
- 	.ndo_set_mac_address = hdd_hostapd_set_mac_address,
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 15, 0))
-+	.ndo_siocdevprivate = hdd_ioctl,
-+#else
- 	.ndo_do_ioctl = hdd_ioctl,
-+#endif
- 	.ndo_change_mtu = hdd_hostapd_change_mtu,
- 	.ndo_select_queue = hdd_select_queue,
- };
-diff --git a/core/hdd/src/wlan_hdd_ioctl.c b/core/hdd/src/wlan_hdd_ioctl.c
-index b9edfc990f89..b4adf00a29c0 100644
---- a/core/hdd/src/wlan_hdd_ioctl.c
-+++ b/core/hdd/src/wlan_hdd_ioctl.c
-@@ -7617,7 +7617,11 @@ exit:
-  *
-  * Return: 0 on success, non-zero on error
-  */
--int hdd_ioctl(struct net_device *net_dev, struct ifreq *ifr, int cmd)
-+int hdd_ioctl(struct net_device *net_dev, struct ifreq *ifr,
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 15, 0))
-+                      void __user *data,
-+#endif
-+                      int cmd)
- {
- 	struct osif_vdev_sync *vdev_sync;
- 	int errno;
-diff --git a/core/hdd/src/wlan_hdd_ioctl.h b/core/hdd/src/wlan_hdd_ioctl.h
-index 042942ef14ae..578778192376 100644
---- a/core/hdd/src/wlan_hdd_ioctl.h
-+++ b/core/hdd/src/wlan_hdd_ioctl.h
-@@ -25,7 +25,11 @@
- 
- extern struct sock *cesium_nl_srv_sock;
- 
--int hdd_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
-+int hdd_ioctl(struct net_device *dev, struct ifreq *ifr,
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 15, 0))
-+                      void __user *,
-+#endif
-+                      int cmd);
- int wlan_hdd_set_mc_rate(struct hdd_adapter *adapter, int target_rate);
- 
- /**
-diff --git a/core/hdd/src/wlan_hdd_main.c b/core/hdd/src/wlan_hdd_main.c
-index 235b53cbb94c..6e13104dada2 100644
---- a/core/hdd/src/wlan_hdd_main.c
-+++ b/core/hdd/src/wlan_hdd_main.c
-@@ -5367,7 +5367,11 @@ static const struct net_device_ops wlan_drv_ops = {
- 	.ndo_set_features = hdd_set_features,
- 	.ndo_tx_timeout = hdd_tx_timeout,
- 	.ndo_get_stats = hdd_get_stats,
-+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 15, 0))
-+	.ndo_siocdevprivate = hdd_ioctl,
-+#else
- 	.ndo_do_ioctl = hdd_ioctl,
-+#endif
- 	.ndo_set_mac_address = hdd_set_mac_address,
- 	.ndo_select_queue = hdd_select_queue,
- 	.ndo_set_rx_mode = hdd_set_multicast_list,

meta-digi-arm/recipes-kernel/kernel-module-qualcomm/kernel-module-qualcomm/81-qcom-wifi.rules

@@ -1,4 +1,4 @@
 # Load Qualcomm wireless module (sdio)
-SUBSYSTEM=="sdio", ACTION=="add", ENV{MODALIAS}=="sdio:c00v0271d050A", RUN="/sbin/modprobe wlan"
+SUBSYSTEM=="sdio", ACTION=="add", ENV{MODALIAS}=="sdio:c00v0271d050A", RUN="/etc/udev/scripts/qualcomm.sh"
 # Load Qualcomm wireless module (pci)
-SUBSYSTEM=="pci", ACTION=="add", ENV{MODALIAS}=="pci:v0000168Cd0000003Esv*sd*bc*sc*i*", RUN="/sbin/modprobe wlan"
+SUBSYSTEM=="pci", ACTION=="add", ENV{MODALIAS}=="pci:v0000168Cd0000003Esv*sd*bc*sc*i*", RUN="/etc/udev/scripts/qualcomm.sh"

meta-digi-arm/recipes-kernel/kernel-module-qualcomm/kernel-module-qualcomm/qualcomm.sh

@@ -0,0 +1,73 @@
+#!/bin/sh
+#
+# Copyright (c) 2017,2018 Digi International Inc.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, you can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+#
+
+# At this point of the boot (udev script), the system log (syslog) is not
+# available yet, so use the kernel log buffer from userspace.
+log() {
+	printf "<$1>qca65x4: $2\n" >/dev/kmsg
+}
+
+# Get the permissions of the filesystem containing the given path
+get_filesystem_access() {
+	[ -z "${1}" ] && return
+
+	fs_device="$(df ${1} | awk 'NR==2 { print $1 }')"
+	fs_access="$(awk -v dev="${fs_device}" '$0 ~ dev { print substr($4,1,2) }' < /proc/mounts)"
+	echo ${fs_access}
+}
+
+# Get the mount point of the filesystem containing the given path
+get_filesystem_mount_point() {
+	[ -z "${1}" ] && return
+
+	fs_device="$(df ${1} | awk 'NR==2 { print $1 }')"
+	fs_mount_point="$(awk -v dev="${fs_device}" '$0 ~ dev { print $2 }' < /proc/mounts)"
+	echo ${fs_mount_point}
+}
+
+# Remount the filesystem containing the given path as 'read-write' if it was
+# mounted as 'read-only'.
+set_filesystem_rw_access() {
+	[ -z "${1}" ] && return
+
+	if [ "$(get_filesystem_access ${1})" = "ro" ]; then
+		mount -o remount,rw $(get_filesystem_mount_point ${1})
+	fi
+}
+
+# Do nothing if the wireless node does not exist on the device tree
+[ -d "/proc/device-tree/wireless" ] || exit 0
+
+# Do nothing if the module is already loaded
+grep -qws 'wlan' /proc/modules && exit 0
+
+FS_ORIGINAL_ACCESS="$(get_filesystem_access ${FIRMWARE_DIR})"
+
+# Load the wireless module with the params defined in modprobe.d/qualcomm.conf
+# and reduce the console log level to avoid debug messages at boot time
+LOGLEVEL="$(sed -ne 's,^kernel.printk[^=]*=[[:blank:]]*\(.*\)$,\1,g;T;p' /etc/sysctl.conf 2>/dev/null)"
+[ -n "${LOGLEVEL}" ] && sysctl -q -w kernel.printk="${LOGLEVEL}"
+modprobe wlan
+
+# Verify the interface is present
+[ -d "/sys/class/net/wlan0" ] || log "3" "[ERROR] Loading wlan module"
+
+# Restore the filesystem with the original access permissions if it has been
+# changed inside the script.
+if [ "$(get_filesystem_access ${FIRMWARE_DIR})" != "${FS_ORIGINAL_ACCESS}" ]; then
+	mount -o remount,${FS_ORIGINAL_ACCESS} $(get_filesystem_mount_point ${FIRMWARE_DIR})
+fi