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Commit 2e7af47d authored by Hemant Kumar's avatar Hemant Kumar
Browse files

usb: gadget: Add snapshot of USB DIAG function driver 



This change adds USB DIAG function driver to support diagnostics
functionality with USB transport. This snapshot is taken as of
msm-4.14 commit <9ae54a8e772> ("Merge "scsi: ufs-qcom: fix ref-clk
pad regulator initialization"").

Change-Id: Icb70c2d8034add4ae0ac7cc46c3f1778bc10439b
Signed-off-by: default avatarHemant Kumar <hemantk@codeaurora.org>
parent 77267719

drivers/usb/gadget/Kconfig

+12 −0
Original line number Diff line number Diff line
@@ -217,6 +217,9 @@ config USB_F_PRINTER 
config USB_F_TCM

	tristate



config USB_F_DIAG

	tristate



# this first set of drivers all depend on bulk-capable hardware.



config USB_CONFIGFS
@@ -484,6 +487,15 @@ config USB_CONFIGFS_F_TCM 
	  Both protocols can work on USB2.0 and USB3.0.

	  UAS utilizes the USB 3.0 feature called streams support.



config USB_CONFIGFS_F_DIAG

	bool "USB Diag function"

	select USB_F_DIAG

	depends on USB_CONFIGFS

	help

	  Diag function driver enables support for diagnostics service over USB.

	  Diagnostics application running on Host receives  stream of log data

	  over USB. Applications can also send commands to diagnostics client

	  running on device.

choice

	tristate "USB Gadget precomposed configurations"

	default USB_ETH

drivers/usb/gadget/function/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -50,3 +50,5 @@ usb_f_printer-y := f_printer.o 
obj-$(CONFIG_USB_F_PRINTER)	+= usb_f_printer.o

usb_f_tcm-y			:= f_tcm.o

obj-$(CONFIG_USB_F_TCM)		+= usb_f_tcm.o

usb_f_diag-y			:= f_diag.o

obj-$(CONFIG_USB_F_DIAG)	+= usb_f_diag.o

drivers/usb/gadget/function/f_diag.c

0 → 100644
+1093 −0

File added.

Preview size limit exceeded, changes collapsed.

include/linux/usb/usbdiag.h

0 → 100644
+72 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */

/*

 * Copyright (c) 2008-2010, 2012-2014, The Linux Foundation.

 * All rights reserved.

 */



#ifndef _DRIVERS_USB_DIAG_H_

#define _DRIVERS_USB_DIAG_H_



#include <linux/err.h>



#define DIAG_LEGACY		"diag"

#define DIAG_MDM		"diag_mdm"

#define DIAG_QSC		"diag_qsc"

#define DIAG_MDM2		"diag_mdm2"



#define USB_DIAG_CONNECT	0

#define USB_DIAG_DISCONNECT	1

#define USB_DIAG_WRITE_DONE	2

#define USB_DIAG_READ_DONE	3



struct diag_request {

	char *buf;

	int length;

	int actual;

	int status;

	void *context;

};



struct usb_diag_ch {

	const char *name;

	struct list_head list;

	void (*notify)(void *priv, unsigned int event,

			struct diag_request *d_req);

	void *priv;

	void *priv_usb;

};



#if IS_ENABLED(CONFIG_USB_F_DIAG)

int usb_diag_request_size(struct usb_diag_ch *ch);

struct usb_diag_ch *usb_diag_open(const char *name, void *priv,

		void (*notify)(void *, unsigned int, struct diag_request *));

void usb_diag_close(struct usb_diag_ch *ch);

int usb_diag_alloc_req(struct usb_diag_ch *ch, int n_write, int n_read);

int usb_diag_read(struct usb_diag_ch *ch, struct diag_request *d_req);

int usb_diag_write(struct usb_diag_ch *ch, struct diag_request *d_req);

#else

static inline struct usb_diag_ch *usb_diag_open(const char *name, void *priv,

		void (*notify)(void *, unsigned int, struct diag_request *))

{

	return ERR_PTR(-ENODEV);

}

static inline void usb_diag_close(struct usb_diag_ch *ch)

{

}

static inline

int usb_diag_alloc_req(struct usb_diag_ch *ch, int n_write, int n_read)

{

	return -ENODEV;

}

static inline

int usb_diag_read(struct usb_diag_ch *ch, struct diag_request *d_req)

{

	return -ENODEV;

}

static inline

int usb_diag_write(struct usb_diag_ch *ch, struct diag_request *d_req)

{

	return -ENODEV;

}

#endif /* CONFIG_USB_F_DIAG */

#endif /* _DRIVERS_USB_DIAG_H_ */