linux/drivers/usb/gadget/udc/r8a66597-udc.c

// SPDX-License-Identifier: GPL-2.0
/*
 * R8A66597 UDC (USB gadget)
 *
 * Copyright (C) 2006-2009 Renesas Solutions Corp.
 *
 * Author : Yoshihiro Shimoda <[email protected]>
 */

#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/dma-mapping.h>

#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>

#include "r8a66597-udc.h"

#define DRIVER_VERSION …

static const char udc_name[] = …;
static const char *r8a66597_ep_name[] = …;

static void init_controller(struct r8a66597 *r8a66597);
static void disable_controller(struct r8a66597 *r8a66597);
static void irq_ep0_write(struct r8a66597_ep *ep, struct r8a66597_request *req);
static void irq_packet_write(struct r8a66597_ep *ep,
				struct r8a66597_request *req);
static int r8a66597_queue(struct usb_ep *_ep, struct usb_request *_req,
			gfp_t gfp_flags);

static void transfer_complete(struct r8a66597_ep *ep,
		struct r8a66597_request *req, int status);

/*-------------------------------------------------------------------------*/
static inline u16 get_usb_speed(struct r8a66597 *r8a66597)
{ … }

static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
		unsigned long reg)
{ … }

static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
		unsigned long reg)
{ … }

static void r8a66597_usb_connect(struct r8a66597 *r8a66597)
{ … }

static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597)
__releases(r8a66597->lock)
__acquires(r8a66597->lock)
{ … }

static inline u16 control_reg_get_pid(struct r8a66597 *r8a66597, u16 pipenum)
{ … }

static inline void control_reg_set_pid(struct r8a66597 *r8a66597, u16 pipenum,
		u16 pid)
{ … }

static inline void pipe_start(struct r8a66597 *r8a66597, u16 pipenum)
{ … }

static inline void pipe_stop(struct r8a66597 *r8a66597, u16 pipenum)
{ … }

static inline void pipe_stall(struct r8a66597 *r8a66597, u16 pipenum)
{ … }

static inline u16 control_reg_get(struct r8a66597 *r8a66597, u16 pipenum)
{ … }

static inline void control_reg_sqclr(struct r8a66597 *r8a66597, u16 pipenum)
{ … }

static void control_reg_sqset(struct r8a66597 *r8a66597, u16 pipenum)
{ … }

static u16 control_reg_sqmon(struct r8a66597 *r8a66597, u16 pipenum)
{ … }

static u16 save_usb_toggle(struct r8a66597 *r8a66597, u16 pipenum)
{ … }

static void restore_usb_toggle(struct r8a66597 *r8a66597, u16 pipenum,
			       u16 toggle)
{ … }

static inline int get_buffer_size(struct r8a66597 *r8a66597, u16 pipenum)
{ … }

static inline unsigned short mbw_value(struct r8a66597 *r8a66597)
{ … }

static void r8a66597_change_curpipe(struct r8a66597 *r8a66597, u16 pipenum,
				    u16 isel, u16 fifosel)
{ … }

static void pipe_change(struct r8a66597 *r8a66597, u16 pipenum)
{ … }

static int pipe_buffer_setting(struct r8a66597 *r8a66597,
		struct r8a66597_pipe_info *info)
{ … }

static void pipe_buffer_release(struct r8a66597 *r8a66597,
				struct r8a66597_pipe_info *info)
{ … }

static void pipe_initialize(struct r8a66597_ep *ep)
{ … }

static void r8a66597_ep_setting(struct r8a66597 *r8a66597,
				struct r8a66597_ep *ep,
				const struct usb_endpoint_descriptor *desc,
				u16 pipenum, int dma)
{ … }

static void r8a66597_ep_release(struct r8a66597_ep *ep)
{ … }

static int alloc_pipe_config(struct r8a66597_ep *ep,
		const struct usb_endpoint_descriptor *desc)
{ … }

static int free_pipe_config(struct r8a66597_ep *ep)
{ … }

/*-------------------------------------------------------------------------*/
static void pipe_irq_enable(struct r8a66597 *r8a66597, u16 pipenum)
{ … }

static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
{ … }

/* if complete is true, gadget driver complete function is not call */
static void control_end(struct r8a66597 *r8a66597, unsigned ccpl)
{ … }

static void start_ep0_write(struct r8a66597_ep *ep,
				struct r8a66597_request *req)
{ … }

static void disable_fifosel(struct r8a66597 *r8a66597, u16 pipenum,
			    u16 fifosel)
{ … }

static void change_bfre_mode(struct r8a66597 *r8a66597, u16 pipenum,
			     int enable)
{ … }

static int sudmac_alloc_channel(struct r8a66597 *r8a66597,
				struct r8a66597_ep *ep,
				struct r8a66597_request *req)
{ … }

static void sudmac_free_channel(struct r8a66597 *r8a66597,
				struct r8a66597_ep *ep,
				struct r8a66597_request *req)
{ … }

static void sudmac_start(struct r8a66597 *r8a66597, struct r8a66597_ep *ep,
			 struct r8a66597_request *req)
{ … }

static void start_packet_write(struct r8a66597_ep *ep,
				struct r8a66597_request *req)
{ … }

static void start_packet_read(struct r8a66597_ep *ep,
				struct r8a66597_request *req)
{ … }

static void start_packet(struct r8a66597_ep *ep, struct r8a66597_request *req)
{ … }

static void start_ep0(struct r8a66597_ep *ep, struct r8a66597_request *req)
{ … }

static void init_controller(struct r8a66597 *r8a66597)
{ … }

static void disable_controller(struct r8a66597 *r8a66597)
{ … }

static void r8a66597_start_xclock(struct r8a66597 *r8a66597)
{ … }

static struct r8a66597_request *get_request_from_ep(struct r8a66597_ep *ep)
{ … }

/*-------------------------------------------------------------------------*/
static void transfer_complete(struct r8a66597_ep *ep,
		struct r8a66597_request *req, int status)
__releases(r8a66597->lock)
__acquires(r8a66597->lock)
{ … }

static void irq_ep0_write(struct r8a66597_ep *ep, struct r8a66597_request *req)
{ … }

static void irq_packet_write(struct r8a66597_ep *ep,
				struct r8a66597_request *req)
{ … }

static void irq_packet_read(struct r8a66597_ep *ep,
				struct r8a66597_request *req)
{ … }

static void irq_pipe_ready(struct r8a66597 *r8a66597, u16 status, u16 enb)
{ … }

static void irq_pipe_empty(struct r8a66597 *r8a66597, u16 status, u16 enb)
{ … }

static void get_status(struct r8a66597 *r8a66597, struct usb_ctrlrequest *ctrl)
__releases(r8a66597->lock)
__acquires(r8a66597->lock)
{ … }

static void clear_feature(struct r8a66597 *r8a66597,
				struct usb_ctrlrequest *ctrl)
{ … }

static void set_feature(struct r8a66597 *r8a66597, struct usb_ctrlrequest *ctrl)
{ … }

/* if return value is true, call class driver's setup() */
static int setup_packet(struct r8a66597 *r8a66597, struct usb_ctrlrequest *ctrl)
{ … }

static void r8a66597_update_usb_speed(struct r8a66597 *r8a66597)
{ … }

static void irq_device_state(struct r8a66597 *r8a66597)
{ … }

static void irq_control_stage(struct r8a66597 *r8a66597)
__releases(r8a66597->lock)
__acquires(r8a66597->lock)
{ … }

static void sudmac_finish(struct r8a66597 *r8a66597, struct r8a66597_ep *ep)
{ … }

static void r8a66597_sudmac_irq(struct r8a66597 *r8a66597)
{ … }

static irqreturn_t r8a66597_irq(int irq, void *_r8a66597)
{ … }

static void r8a66597_timer(struct timer_list *t)
{ … }

/*-------------------------------------------------------------------------*/
static int r8a66597_enable(struct usb_ep *_ep,
			 const struct usb_endpoint_descriptor *desc)
{ … }

static int r8a66597_disable(struct usb_ep *_ep)
{ … }

static struct usb_request *r8a66597_alloc_request(struct usb_ep *_ep,
						gfp_t gfp_flags)
{ … }

static void r8a66597_free_request(struct usb_ep *_ep, struct usb_request *_req)
{ … }

static int r8a66597_queue(struct usb_ep *_ep, struct usb_request *_req,
			gfp_t gfp_flags)
{ … }

static int r8a66597_dequeue(struct usb_ep *_ep, struct usb_request *_req)
{ … }

static int r8a66597_set_halt(struct usb_ep *_ep, int value)
{ … }

static int r8a66597_set_wedge(struct usb_ep *_ep)
{ … }

static void r8a66597_fifo_flush(struct usb_ep *_ep)
{ … }

static const struct usb_ep_ops r8a66597_ep_ops = …;

/*-------------------------------------------------------------------------*/
static int r8a66597_start(struct usb_gadget *gadget,
		struct usb_gadget_driver *driver)
{ … }

static int r8a66597_stop(struct usb_gadget *gadget)
{ … }

/*-------------------------------------------------------------------------*/
static int r8a66597_get_frame(struct usb_gadget *_gadget)
{ … }

static int r8a66597_pullup(struct usb_gadget *gadget, int is_on)
{ … }

static int r8a66597_set_selfpowered(struct usb_gadget *gadget, int is_self)
{ … }

static const struct usb_gadget_ops r8a66597_gadget_ops = …;

static void r8a66597_remove(struct platform_device *pdev)
{ … }

static void nop_completion(struct usb_ep *ep, struct usb_request *r)
{ … }

static int r8a66597_sudmac_ioremap(struct r8a66597 *r8a66597,
					  struct platform_device *pdev)
{ … }

static int r8a66597_probe(struct platform_device *pdev)
{ … }

/*-------------------------------------------------------------------------*/
static struct platform_driver r8a66597_driver = …;

module_platform_driver(…) …;

MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;
MODULE_AUTHOR(…) …;
MODULE_ALIAS(…) …;