[修改] sslb 添加 configfs 下 functions目录新增 os_desc/interface.sslb

免驱正常

.gitignore

@@ -2,7 +2,7 @@
 tags
 .svim
 .DS_Store
-compile_commands.json
+compile_commands*.json
 
 *~
 *.swp

build/Makefile

@@ -301,6 +301,8 @@ ifeq ($(patsubst "%",%,$(CONFIG_ARCH)),arm64)
 	# Since we will support aarch32 user space even if the kernel is aarch64, install aarch32 headers also
 	${Q}$(MAKE) -j${NPROC} -C ${KERNEL_PATH} ARCH=arm headers_install INSTALL_HDR_PATH=${KERNEL_PATH}/${KERNEL_OUTPUT_FOLDER}/arm/usr
 endif
+	${Q}mkdir -p ${KERNEL_PATH}/${KERNEL_OUTPUT_FOLDER}/tools
+	${Q}$(MAKE) -j${NPROC} -C ${KERNEL_PATH}/tools O=${KERNEL_PATH}/${KERNEL_OUTPUT_FOLDER}/tools usb
 
 DTS_DEFATUL_PATHS := \
 	${BUILD_PATH}/boards/default/dts/${CHIP_ARCH_L} \

build/boards/cv181x/sg2000_milkv_duos_glibc_arm64_sd/linux/cvitek_sg2000_milkv_duos_glibc_arm64_sd_defconfig

@@ -230,3 +230,6 @@ CONFIG_DEBUG_FS=y
 # CONFIG_FTRACE is not set
 # CONFIG_STRICT_DEVMEM is not set
 # CONFIG_RUNTIME_TESTING_MENU is not set
+CONFIG_USB_ZERO=m
+CONFIG_USB_F_SS_LB=y
+CONFIG_DEBUG_INFO=y

build/boards/cv181x/sg2000_milkv_duos_glibc_arm64_sd/sg2000_milkv_duos_glibc_arm64_sd_defconfig

@@ -27,3 +27,4 @@ CONFIG_TARGET_PACKAGE_MTD-UTILS=y
 # CONFIG_TARGET_PACKAGE_RSYSLOG is not set
 CONFIG_TARGET_PACKAGE_BUSYBOX_SYSLOGD_SCRIPT=y
 CONFIG_TARGET_PACKAGE_NTP=y
+CONFIG_USB_F_SS_LB=y

linux_5.10/drivers/usb/gadget/composite.c

@@ -20,6 +20,56 @@
 
 #include "u_os_desc.h"
 
+#if defined (CONFIG_GAOYANG)
+
+#define  WINUSB_IF0_WCID_PROPERTIES_SIZE  (162)
+
+const uint8_t WINUSB20_WCIDDescriptorSet [162] = {
+  ///////////////////////////////////////
+  /// WCID20 descriptor set descriptor
+  ///////////////////////////////////////
+  0x0a, 0x00,                                       /* wLength */
+  0x00, 0x00,                                       /* wDescriptorType */
+  0x00, 0x00, 0x03, 0x06,                           /* dwWindowsVersion */
+  0xa2, 0x00,                                       /* wDescriptorSetTotalLength */
+  ///////////////////////////////////////
+  /// WCID20 compatible ID descriptor
+  ///////////////////////////////////////
+  0x14, 0x00,                                       /* wLength */
+  0x03, 0x00,                                       /* wDescriptorType */
+  /* WINUSB */
+  'W', 'I', 'N', 'U', 'S', 'B', 0x00, 0x00,         /* cCID_8 */
+  /*  */
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,   /* cSubCID_8 */
+  ///////////////////////////////////////
+  /// WCID20 registry property descriptor
+  ///////////////////////////////////////
+  0x84, 0x00,                                       /* wLength */
+  0x04, 0x00,                                       /* wDescriptorType */
+  0x07, 0x00,                                       /* wPropertyDataType */
+  0x2a, 0x00,                                       /* wPropertyNameLength */
+  /* DeviceInterfaceGUIDs */
+  'D', 0x00, 'e', 0x00, 'v', 0x00, 'i', 0x00,       /* wcPropertyName_21 */
+  'c', 0x00, 'e', 0x00, 'I', 0x00, 'n', 0x00,       /* wcPropertyName_21 */
+  't', 0x00, 'e', 0x00, 'r', 0x00, 'f', 0x00,       /* wcPropertyName_21 */
+  'a', 0x00, 'c', 0x00, 'e', 0x00, 'G', 0x00,       /* wcPropertyName_21 */
+  'U', 0x00, 'I', 0x00, 'D', 0x00, 's', 0x00,       /* wcPropertyName_21 */
+  0x00, 0x00,                                       /* wcPropertyName_21 */
+  0x50, 0x00,                                       /* wPropertyDataLength */
+  /* {1D4B2365-4749-48EA-B38A-7C6FDDDD7E26} */
+  '{', 0x00, '1', 0x00, 'D', 0x00, '4', 0x00,       /* wcPropertyData_40 */
+  'B', 0x00, '2', 0x00, '3', 0x00, '6', 0x00,       /* wcPropertyData_40 */
+  '5', 0x00, '-', 0x00, '4', 0x00, '7', 0x00,       /* wcPropertyData_40 */
+  '4', 0x00, '9', 0x00, '-', 0x00, '4', 0x00,       /* wcPropertyData_40 */
+  '8', 0x00, 'E', 0x00, 'A', 0x00, '-', 0x00,       /* wcPropertyData_40 */
+  'B', 0x00, '3', 0x00, '8', 0x00, 'A', 0x00,       /* wcPropertyData_40 */
+  '-', 0x00, '7', 0x00, 'C', 0x00, '6', 0x00,       /* wcPropertyData_40 */
+  'F', 0x00, 'D', 0x00, 'D', 0x00, 'D', 0x00,       /* wcPropertyData_40 */
+  'D', 0x00, '7', 0x00, 'E', 0x00, '2', 0x00,       /* wcPropertyData_40 */
+  '6', 0x00, '}', 0x00, 0x00, 0x00, 0x00, 0x00,     /* wcPropertyData_40 */
+};
+#endif // defined (CONFIG_GAOYANG)
+
 /**
  * struct usb_os_string - represents OS String to be reported by a gadget
  * @bLength: total length of the entire descritor, always 0x12

linux_5.10/drivers/usb/gadget/function/f_sourcesink.c

@@ -14,6 +14,7 @@
 #include <linux/module.h>
 #include <linux/usb/composite.h>
 #include <linux/err.h>
+#include "configfs.h"
 
 #include "g_zero.h"
 #include "u_f.h"
@@ -1237,12 +1238,17 @@ static void source_sink_free_instance(struct usb_function_instance *fi)
 	struct f_ss_opts *ss_opts;
 
 	ss_opts = container_of(fi, struct f_ss_opts, func_inst);
+
+	kfree(ss_opts->sslb_interf_group);	/* single VLA chunk */
 	kfree(ss_opts);
 }
 
 static struct usb_function_instance *source_sink_alloc_inst(void)
 {
 	struct f_ss_opts *ss_opts;
+	struct usb_os_desc *descs[1];
+	struct config_group *sslb_interf_group;
+	char *names[1];
 
 	ss_opts = kzalloc(sizeof(*ss_opts), GFP_KERNEL);
 	if (!ss_opts)
@@ -1258,6 +1264,18 @@ static struct usb_function_instance *source_sink_alloc_inst(void)
 	config_group_init_type_name(&ss_opts->func_inst.group, "",
 				    &ss_func_type);
 
+	INIT_LIST_HEAD(&ss_opts->sslb_os_desc.ext_prop);
+	ss_opts->sslb_os_desc.ext_compat_id = ss_opts->sslb_ext_compat_id;
+
+	names[0] = "sslb";
+	descs[0] = &ss_opts->sslb_os_desc;
+	sslb_interf_group = usb_os_desc_prepare_interf_dir(&ss_opts->func_inst.group, 1, descs, names, THIS_MODULE);
+	if (IS_ERR(sslb_interf_group)) {
+		source_sink_free_instance(&ss_opts->func_inst);
+		return ERR_CAST(sslb_interf_group);
+	}
+	ss_opts->sslb_interf_group = sslb_interf_group;
+
 	return &ss_opts->func_inst;
 }
 DECLARE_USB_FUNCTION(SourceSink, source_sink_alloc_inst,

linux_5.10/drivers/usb/gadget/function/g_zero.h

@@ -45,6 +45,10 @@ struct f_ss_opts {
 	 */
 	struct mutex			lock;
 	int				refcnt;
+
+	struct config_group		*sslb_interf_group;
+	struct usb_os_desc		sslb_os_desc;
+	char				sslb_ext_compat_id[16];
 };
 
 struct f_lb_opts {