qcacld-3.0: add build flag DYNAMIC_SINGLE_CHIP

Introduces a new build flag 'DYNAMIC_SINGLE_CHIP':
If DYNAMIC_SINGLE_CHIP is defined, which means there
are multiple possible drivers, but only requires one
instance of driver at a time. In such case, leave
MULTI_IF_NAME undefined, no matter what the module
name is, only prepend DYNAMIC_SINGLE_CHIP to names
of firmware/mac/ini files.

Take path of driverdump and ini file for example:
If both MULTI_IF_NAME and DYNAMIC_SINGLE_CHIP are not
defined, the paths are:
driverdump: '/proc/debugdriver/driverdump'
ini: '/<fw_root>/wlan/qca_cld/WCNSS_qcom_cfg.ini'

If DYNAMIC_SINGLE_CHIP is defined as 'qca6174':
driverdump: '/proc/debugdriver/driverdump'
ini: '/<fw_root>/wlan/qca_cld/qca6174/WCNSS_qcom_cfg.ini'

If MULTI_IF_NAME is defined as 'qca6174' and
DYNAMIC_SINGLE_CHIP is not defined:
driverdump: '/proc/debugdriverqca6174/driverdump'
ini: '/<fw_root>/wlan/qca_cld/qca6174/WCNSS_qcom_cfg.ini'

On LA platform, DYNAMIC_SINGLE_CHIP is controlled by
TARGET_WLAN_CHIP and TARGET_MULTI_WLAN:

If more than one WLAN devices are enabled in TARGET_WLAN_CHIP,
and TARGET_MULTI_WLAN is not set to 'true',
DYNAMIC_SINGLE_CHIP will be set to the device name, to
avoid name conflicts of firmware/mac/ini files;
meanwhile, MODNAME is set to 'wlan', then paths for
debugging are not changed.
Otherwise, MULTI_IF_NAME will be defined if requires
multiple instances of driver.

Change-Id: I22ed34d80d3540451bf8b891243c6cdac5a73d7e
CRs-Fixed: 2402432

Android.mk

@@ -23,16 +23,18 @@ ifneq ($(findstring opensource,$(LOCAL_PATH)),)
 endif # opensource
 
 # Multi-ko check
-LOCAL_MOD_NAME := $(lastword $(strip \
+LOCAL_DEV_NAME := $(lastword $(strip \
 	$(subst ~, , \
 	$(subst /, ,$(LOCAL_PATH)))))
 
 ifeq (1, $(strip $(shell expr $(words $(strip $(TARGET_WLAN_CHIP))) \>= 2)))
-ifeq ($(LOCAL_MOD_NAME), qcacld-3.0)
+
+ifeq ($(LOCAL_DEV_NAME), qcacld-3.0)
 LOCAL_MULTI_KO := true
 else
 LOCAL_MULTI_KO := false
 endif
+
 endif
 
 ifeq ($(LOCAL_MULTI_KO), true)
@@ -56,7 +58,9 @@ include $(foreach chip, $(TARGET_WLAN_CHIP), $(LOCAL_PATH)/~$(chip)/Android.mk)
 
 else # Multi-ok check
 
-ifeq ($(LOCAL_MOD_NAME), qcacld-3.0)
+ifeq ($(LOCAL_DEV_NAME), qcacld-3.0)
+
+LOCAL_DEV_NAME := wlan
 LOCAL_MOD_NAME := wlan
 CMN_OFFSET := ..
 LOCAL_SRC_DIR :=
@@ -64,13 +68,23 @@ WLAN_PROFILE := default
 TARGET_FW_DIR := firmware/wlan/qca_cld
 TARGET_CFG_PATH := /vendor/etc/wifi
 TARGET_MAC_BIN_PATH := /mnt/vendor/persist
+
 else
-LOCAL_SRC_DIR := ~$(LOCAL_MOD_NAME)
+
+LOCAL_SRC_DIR := ~$(LOCAL_DEV_NAME)
 CMN_OFFSET := .
-WLAN_PROFILE := $(LOCAL_MOD_NAME)
-TARGET_FW_DIR := firmware/wlan/qca_cld/$(LOCAL_MOD_NAME)
-TARGET_CFG_PATH := /vendor/etc/wifi/$(LOCAL_MOD_NAME)
-TARGET_MAC_BIN_PATH := /mnt/vendor/persist/$(LOCAL_MOD_NAME)
+WLAN_PROFILE := $(LOCAL_DEV_NAME)
+TARGET_FW_DIR := firmware/wlan/qca_cld/$(LOCAL_DEV_NAME)
+TARGET_CFG_PATH := /vendor/etc/wifi/$(LOCAL_DEV_NAME)
+TARGET_MAC_BIN_PATH := /mnt/vendor/persist/$(LOCAL_DEV_NAME)
+
+ifneq ($(TARGET_MULTI_WLAN), true)
+LOCAL_MOD_NAME := wlan
+DYNAMIC_SINGLE_CHIP := $(LOCAL_DEV_NAME)
+else
+LOCAL_MOD_NAME := $(LOCAL_DEV_NAME)
+endif
+
 endif
 
 # DLKM_DIR was moved for JELLY_BEAN (PLATFORM_SDK 16)
@@ -88,6 +102,7 @@ KBUILD_OPTIONS += WLAN_COMMON_ROOT=$(CMN_OFFSET)/qca-wifi-host-cmn
 KBUILD_OPTIONS += WLAN_COMMON_INC=$(WLAN_BLD_DIR)/qca-wifi-host-cmn
 KBUILD_OPTIONS += WLAN_FW_API=$(WLAN_BLD_DIR)/fw-api
 KBUILD_OPTIONS += WLAN_PROFILE=$(WLAN_PROFILE)
+KBUILD_OPTIONS += DYNAMIC_SINGLE_CHIP=$(DYNAMIC_SINGLE_CHIP)
 
 # We are actually building wlan.ko here, as per the
 # requirement we are specifying <chipset>_wlan.ko as LOCAL_MODULE.
@@ -98,7 +113,7 @@ KBUILD_OPTIONS += BOARD_PLATFORM=$(TARGET_BOARD_PLATFORM)
 KBUILD_OPTIONS += $(WLAN_SELECT)
 
 include $(CLEAR_VARS)
-LOCAL_MODULE              := $(WLAN_CHIPSET)_$(LOCAL_MOD_NAME).ko
+LOCAL_MODULE              := $(WLAN_CHIPSET)_$(LOCAL_DEV_NAME).ko
 LOCAL_MODULE_KBUILD_NAME  := $(LOCAL_MOD_NAME).ko
 LOCAL_MODULE_TAGS         := debug
 LOCAL_MODULE_DEBUG_ENABLE := true
@@ -120,11 +135,11 @@ ifneq ($(findstring $(WLAN_CHIPSET),$(WIFI_DRIVER_DEFAULT)),)
 ifeq ($(PRODUCT_VENDOR_MOVE_ENABLED),true)
 ifneq ($(WIFI_DRIVER_INSTALL_TO_KERNEL_OUT),)
 $(shell mkdir -p $(TARGET_OUT_VENDOR)/lib/modules; \
-	ln -sf /$(TARGET_COPY_OUT_VENDOR)/lib/modules/$(WLAN_CHIPSET)/$(LOCAL_MODULE) $(TARGET_OUT_VENDOR)/lib/modules/$(LOCAL_MOD_NAME).ko)
+	ln -sf /$(TARGET_COPY_OUT_VENDOR)/lib/modules/$(WLAN_CHIPSET)/$(LOCAL_MODULE) $(TARGET_OUT_VENDOR)/lib/modules/$(LOCAL_MODULE))
 endif
 else
 $(shell mkdir -p $(TARGET_OUT)/lib/modules; \
-	ln -sf /system/lib/modules/$(WLAN_CHIPSET)/$(LOCAL_MODULE) $(TARGET_OUT)/lib/modules/$(LOCAL_MOD_NAME).ko)
+	ln -sf /system/lib/modules/$(WLAN_CHIPSET)/$(LOCAL_MODULE) $(TARGET_OUT)/lib/modules/$(LOCAL_MODULE))
 endif
 endif
 

Kbuild

@@ -2710,11 +2710,23 @@ endif
 # This allows multiple instances of the driver with different module names.
 # If the module name is wlan, leave MULTI_IF_NAME undefined and the code will
 # treat the driver as the primary driver.
+#
+# If DYNAMIC_SINGLE_CHIP is defined, which means there are multiple possible
+# drivers, but only 1 driver will be loaded at a time(WLAN dynamic detect),
+# leave MULTI_IF_NAME undefined, no matter what the module name is, then
+# host driver will only append DYNAMIC_SINGLE_CHIP to the path of
+# firmware/mac/ini file.
+ifneq ($(DYNAMIC_SINGLE_CHIP),)
+ccflags-y += -DDYNAMIC_SINGLE_CHIP=\"$(DYNAMIC_SINGLE_CHIP)\"
+else
+
 ifneq ($(MODNAME), wlan)
 CHIP_NAME ?= $(MODNAME)
 ccflags-y += -DMULTI_IF_NAME=\"$(CHIP_NAME)\"
 endif
 
+endif #DYNAMIC_SINGLE_CHIP
+
 # WLAN_HDD_ADAPTER_MAGIC must be unique for all instances of the driver on the
 # system. If it is not defined, then the host driver will use the first 4
 # characters (including NULL) of MULTI_IF_NAME to construct

core/hdd/inc/wlan_hdd_misc.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012-2014,2016-2017 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012-2014,2016-2017,2019 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -19,15 +19,28 @@
 #ifndef WLAN_HDD_MISC_H
 #define WLAN_HDD_MISC_H
 /*
- * If MULTI_IF_NAME is defined, then prepend MULTI_IF_NAME to the filename
- * to prevent name conflicts when loading multiple instances of the driver.
+ * To prevent name conflicts when loading different instances of the driver:
+ *
+ * If DYNAMIC_SINGLE_CHIP is defined, which means there are multiple possible
+ * drivers, but only one instance of driver at a time(WLAN dynamic detect),
+ * prepend DYNAMIC_SINGLE_CHIP to the filenames.
+ *
+ * Otherwise, if MULTI_IF_NAME is defined, which means there are multiple
+ * instances of the driver with different module names, prepend MULTI_IF_NAME
+ * to the filenames.
  */
+#ifdef DYNAMIC_SINGLE_CHIP
+#define PREFIX DYNAMIC_SINGLE_CHIP "/"
+#else
+
 #ifdef MULTI_IF_NAME
 #define PREFIX MULTI_IF_NAME "/"
 #else
 #define PREFIX ""
 #endif
 
+#endif
+
 #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"

core/pld/src/pld_pcie.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2018 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2019 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -24,12 +24,18 @@
 #endif
 #include "pld_internal.h"
 
+#ifdef DYNAMIC_SINGLE_CHIP
+#define PREFIX DYNAMIC_SINGLE_CHIP "/"
+#else
+
 #ifdef MULTI_IF_NAME
 #define PREFIX MULTI_IF_NAME "/"
 #else
 #define PREFIX ""
 #endif
 
+#endif
+
 #ifndef HIF_PCI
 static inline int pld_pcie_register_driver(void)
 {

core/pld/src/pld_sdio.h

@@ -24,12 +24,18 @@
 #endif
 #include "pld_common.h"
 
+#ifdef DYNAMIC_SINGLE_CHIP
+#define PREFIX DYNAMIC_SINGLE_CHIP "/"
+#else
+
 #ifdef MULTI_IF_NAME
 #define PREFIX MULTI_IF_NAME "/"
 #else
 #define PREFIX ""
 #endif
 
+#endif
+
 #define PLD_QCA9377_REV1_1_VERSION          0x5020001
 #define PLD_QCA9379_REV1_VERSION            0x5040000