Release 4.7 drivers/usb/gadget/udc/m66592-udc.c

Directory: drivers/usb/gadget/udc
/*
 * M66592 UDC (USB gadget)
 *
 * Copyright (C) 2006-2007 Renesas Solutions Corp.
 *
 * Author : Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 */

#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>

#include "m66592-udc.h"

MODULE_DESCRIPTION("M66592 USB gadget driver");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Yoshihiro Shimoda");
MODULE_ALIAS("platform:m66592_udc");


#define DRIVER_VERSION	"21 July 2009"


static const char udc_name[] = "m66592_udc";

static const char *m66592_ep_name[] = {
	"ep0", "ep1", "ep2", "ep3", "ep4", "ep5", "ep6", "ep7"
};

static void disable_controller(struct m66592 *m66592);
static void irq_ep0_write(struct m66592_ep *ep, struct m66592_request *req);
static void irq_packet_write(struct m66592_ep *ep, struct m66592_request *req);
static int m66592_queue(struct usb_ep *_ep, struct usb_request *_req,
			gfp_t gfp_flags);

static void transfer_complete(struct m66592_ep *ep,
		struct m66592_request *req, int status);

/*-------------------------------------------------------------------------*/


static inline u16 get_usb_speed(struct m66592 *m66592)
{
	return (m66592_read(m66592, M66592_DVSTCTR) & M66592_RHST);
}

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yoshihiro shimoda yoshihiro shimoda 24 100.00% 1 100.00%
Total 24 100.00% 1 100.00%



static void enable_pipe_irq(struct m66592 *m66592, u16 pipenum,
		unsigned long reg)
{
	u16 tmp;

	tmp = m66592_read(m66592, M66592_INTENB0);
	m66592_bclr(m66592, M66592_BEMPE | M66592_NRDYE | M66592_BRDYE,
			M66592_INTENB0);
	m66592_bset(m66592, (1 << pipenum), reg);
	m66592_write(m66592, tmp, M66592_INTENB0);
}

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yoshihiro shimoda yoshihiro shimoda 65 100.00% 1 100.00%
Total 65 100.00% 1 100.00%



static void disable_pipe_irq(struct m66592 *m66592, u16 pipenum,
		unsigned long reg)
{
	u16 tmp;

	tmp = m66592_read(m66592, M66592_INTENB0);
	m66592_bclr(m66592, M66592_BEMPE | M66592_NRDYE | M66592_BRDYE,
			M66592_INTENB0);
	m66592_bclr(m66592, (1 << pipenum), reg);
	m66592_write(m66592, tmp, M66592_INTENB0);
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 65 100.00% 1 100.00%
Total 65 100.00% 1 100.00%



static void m66592_usb_connect(struct m66592 *m66592)
{
	m66592_bset(m66592, M66592_CTRE, M66592_INTENB0);
	m66592_bset(m66592, M66592_WDST | M66592_RDST | M66592_CMPL,
			M66592_INTENB0);
	m66592_bset(m66592, M66592_BEMPE | M66592_BRDYE, M66592_INTENB0);

	m66592_bset(m66592, M66592_DPRPU, M66592_SYSCFG);
}

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yoshihiro shimoda yoshihiro shimoda 53 100.00% 1 100.00%
Total 53 100.00% 1 100.00%


static void m66592_usb_disconnect(struct m66592 *m66592)
__releases(m66592->lock)
__acquires(m66592->lock)
{
	m66592_bclr(m66592, M66592_CTRE, M66592_INTENB0);
	m66592_bclr(m66592, M66592_WDST | M66592_RDST | M66592_CMPL,
			M66592_INTENB0);
	m66592_bclr(m66592, M66592_BEMPE | M66592_BRDYE, M66592_INTENB0);
	m66592_bclr(m66592, M66592_DPRPU, M66592_SYSCFG);

	m66592->gadget.speed = USB_SPEED_UNKNOWN;
	spin_unlock(&m66592->lock);
	m66592->driver->disconnect(&m66592->gadget);
	spin_lock(&m66592->lock);

	disable_controller(m66592);
	INIT_LIST_HEAD(&m66592->ep[0].queue);
}

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yoshihiro shimoda yoshihiro shimoda 119 100.00% 2 100.00%
Total 119 100.00% 2 100.00%



static inline u16 control_reg_get_pid(struct m66592 *m66592, u16 pipenum)
{
	u16 pid = 0;
	unsigned long offset;

	if (pipenum == 0)
		pid = m66592_read(m66592, M66592_DCPCTR) & M66592_PID;
	else if (pipenum < M66592_MAX_NUM_PIPE) {
		offset = get_pipectr_addr(pipenum);
		pid = m66592_read(m66592, offset) & M66592_PID;
	} else
		pr_err("unexpect pipe num (%d)\n", pipenum);

	return pid;
}

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yoshihiro shimoda yoshihiro shimoda 78 98.73% 1 50.00%
david brownell david brownell 1 1.27% 1 50.00%
Total 79 100.00% 2 100.00%



static inline void control_reg_set_pid(struct m66592 *m66592, u16 pipenum,
		u16 pid)
{
	unsigned long offset;

	if (pipenum == 0)
		m66592_mdfy(m66592, pid, M66592_PID, M66592_DCPCTR);
	else if (pipenum < M66592_MAX_NUM_PIPE) {
		offset = get_pipectr_addr(pipenum);
		m66592_mdfy(m66592, pid, M66592_PID, offset);
	} else
		pr_err("unexpect pipe num (%d)\n", pipenum);
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 73 98.65% 1 50.00%
david brownell david brownell 1 1.35% 1 50.00%
Total 74 100.00% 2 100.00%



static inline void pipe_start(struct m66592 *m66592, u16 pipenum)
{
	control_reg_set_pid(m66592, pipenum, M66592_PID_BUF);
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 24 100.00% 1 100.00%
Total 24 100.00% 1 100.00%



static inline void pipe_stop(struct m66592 *m66592, u16 pipenum)
{
	control_reg_set_pid(m66592, pipenum, M66592_PID_NAK);
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 24 100.00% 1 100.00%
Total 24 100.00% 1 100.00%



static inline void pipe_stall(struct m66592 *m66592, u16 pipenum)
{
	control_reg_set_pid(m66592, pipenum, M66592_PID_STALL);
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 24 100.00% 1 100.00%
Total 24 100.00% 1 100.00%



static inline u16 control_reg_get(struct m66592 *m66592, u16 pipenum)
{
	u16 ret = 0;
	unsigned long offset;

	if (pipenum == 0)
		ret = m66592_read(m66592, M66592_DCPCTR);
	else if (pipenum < M66592_MAX_NUM_PIPE) {
		offset = get_pipectr_addr(pipenum);
		ret = m66592_read(m66592, offset);
	} else
		pr_err("unexpect pipe num (%d)\n", pipenum);

	return ret;
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 74 98.67% 1 50.00%
david brownell david brownell 1 1.33% 1 50.00%
Total 75 100.00% 2 100.00%



static inline void control_reg_sqclr(struct m66592 *m66592, u16 pipenum)
{
	unsigned long offset;

	pipe_stop(m66592, pipenum);

	if (pipenum == 0)
		m66592_bset(m66592, M66592_SQCLR, M66592_DCPCTR);
	else if (pipenum < M66592_MAX_NUM_PIPE) {
		offset = get_pipectr_addr(pipenum);
		m66592_bset(m66592, M66592_SQCLR, offset);
	} else
		pr_err("unexpect pipe num(%d)\n", pipenum);
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 73 98.65% 1 50.00%
david brownell david brownell 1 1.35% 1 50.00%
Total 74 100.00% 2 100.00%



static inline int get_buffer_size(struct m66592 *m66592, u16 pipenum)
{
	u16 tmp;
	int size;

	if (pipenum == 0) {
		tmp = m66592_read(m66592, M66592_DCPCFG);
		if ((tmp & M66592_CNTMD) != 0)
			size = 256;
		else {
			tmp = m66592_read(m66592, M66592_DCPMAXP);
			size = tmp & M66592_MAXP;
		}
	} else {
		m66592_write(m66592, pipenum, M66592_PIPESEL);
		tmp = m66592_read(m66592, M66592_PIPECFG);
		if ((tmp & M66592_CNTMD) != 0) {
			tmp = m66592_read(m66592, M66592_PIPEBUF);
			size = ((tmp >> 10) + 1) * 64;
		} else {
			tmp = m66592_read(m66592, M66592_PIPEMAXP);
			size = tmp & M66592_MXPS;
		}
	}

	return size;
}

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yoshihiro shimoda yoshihiro shimoda 147 100.00% 1 100.00%
Total 147 100.00% 1 100.00%



static inline void pipe_change(struct m66592 *m66592, u16 pipenum)
{
	struct m66592_ep *ep = m66592->pipenum2ep[pipenum];
	unsigned short mbw;

	if (ep->use_dma)
		return;

	m66592_mdfy(m66592, pipenum, M66592_CURPIPE, ep->fifosel);

	ndelay(450);

	if (m66592->pdata->on_chip)
		mbw = M66592_MBW_32;
	else
		mbw = M66592_MBW_16;

	m66592_bset(m66592, mbw, ep->fifosel);
}

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yoshihiro shimoda yoshihiro shimoda 62 73.81% 1 50.00%
magnus damm magnus damm 22 26.19% 1 50.00%
Total 84 100.00% 2 100.00%



static int pipe_buffer_setting(struct m66592 *m66592,
		struct m66592_pipe_info *info)
{
	u16 bufnum = 0, buf_bsize = 0;
	u16 pipecfg = 0;

	if (info->pipe == 0)
		return -EINVAL;

	m66592_write(m66592, info->pipe, M66592_PIPESEL);

	if (info->dir_in)
		pipecfg |= M66592_DIR;
	pipecfg |= info->type;
	pipecfg |= info->epnum;
	switch (info->type) {
	case M66592_INT:
		bufnum = 4 + (info->pipe - M66592_BASE_PIPENUM_INT);
		buf_bsize = 0;
		break;
	case M66592_BULK:
		/* isochronous pipes may be used as bulk pipes */
		if (info->pipe >= M66592_BASE_PIPENUM_BULK)
			bufnum = info->pipe - M66592_BASE_PIPENUM_BULK;
		else
			bufnum = info->pipe - M66592_BASE_PIPENUM_ISOC;

		bufnum = M66592_BASE_BUFNUM + (bufnum * 16);
		buf_bsize = 7;
		pipecfg |= M66592_DBLB;
		if (!info->dir_in)
			pipecfg |= M66592_SHTNAK;
		break;
	case M66592_ISO:
		bufnum = M66592_BASE_BUFNUM +
			 (info->pipe - M66592_BASE_PIPENUM_ISOC) * 16;
		buf_bsize = 7;
		break;
	}

	if (buf_bsize && ((bufnum + 16) >= M66592_MAX_BUFNUM)) {
		pr_err("m66592 pipe memory is insufficient\n");
		return -ENOMEM;
	}

	m66592_write(m66592, pipecfg, M66592_PIPECFG);
	m66592_write(m66592, (buf_bsize << 10) | (bufnum), M66592_PIPEBUF);
	m66592_write(m66592, info->maxpacket, M66592_PIPEMAXP);
	if (info->interval)
		info->interval--;
	m66592_write(m66592, info->interval, M66592_PIPEPERI);

	return 0;
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 233 85.98% 1 25.00%
magnus damm magnus damm 36 13.28% 1 25.00%
yusuke goda yusuke goda 1 0.37% 1 25.00%
david brownell david brownell 1 0.37% 1 25.00%
Total 271 100.00% 4 100.00%



static void pipe_buffer_release(struct m66592 *m66592,
				struct m66592_pipe_info *info)
{
	if (info->pipe == 0)
		return;

	if (is_bulk_pipe(info->pipe)) {
		m66592->bulk--;
	} else if (is_interrupt_pipe(info->pipe))
		m66592->interrupt--;
	else if (is_isoc_pipe(info->pipe)) {
		m66592->isochronous--;
		if (info->type == M66592_BULK)
			m66592->bulk--;
	} else
		pr_err("ep_release: unexpect pipenum (%d)\n",
				info->pipe);
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 95 98.96% 1 50.00%
david brownell david brownell 1 1.04% 1 50.00%
Total 96 100.00% 2 100.00%



static void pipe_initialize(struct m66592_ep *ep)
{
	struct m66592 *m66592 = ep->m66592;
	unsigned short mbw;

	m66592_mdfy(m66592, 0, M66592_CURPIPE, ep->fifosel);

	m66592_write(m66592, M66592_ACLRM, ep->pipectr);
	m66592_write(m66592, 0, ep->pipectr);
	m66592_write(m66592, M66592_SQCLR, ep->pipectr);
	if (ep->use_dma) {
		m66592_mdfy(m66592, ep->pipenum, M66592_CURPIPE, ep->fifosel);

		ndelay(450);

		if (m66592->pdata->on_chip)
			mbw = M66592_MBW_32;
		else
			mbw = M66592_MBW_16;

		m66592_bset(m66592, mbw, ep->fifosel);
	}
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 104 82.54% 1 50.00%
magnus damm magnus damm 22 17.46% 1 50.00%
Total 126 100.00% 2 100.00%



static void m66592_ep_setting(struct m66592 *m66592, struct m66592_ep *ep,
		const struct usb_endpoint_descriptor *desc,
		u16 pipenum, int dma)
{
	if ((pipenum != 0) && dma) {
		if (m66592->num_dma == 0) {
			m66592->num_dma++;
			ep->use_dma = 1;
			ep->fifoaddr = M66592_D0FIFO;
			ep->fifosel = M66592_D0FIFOSEL;
			ep->fifoctr = M66592_D0FIFOCTR;
			ep->fifotrn = M66592_D0FIFOTRN;
		} else if (!m66592->pdata->on_chip && m66592->num_dma == 1) {
			m66592->num_dma++;
			ep->use_dma = 1;
			ep->fifoaddr = M66592_D1FIFO;
			ep->fifosel = M66592_D1FIFOSEL;
			ep->fifoctr = M66592_D1FIFOCTR;
			ep->fifotrn = M66592_D1FIFOTRN;
		} else {
			ep->use_dma = 0;
			ep->fifoaddr = M66592_CFIFO;
			ep->fifosel = M66592_CFIFOSEL;
			ep->fifoctr = M66592_CFIFOCTR;
			ep->fifotrn = 0;
		}
	} else {
		ep->use_dma = 0;
		ep->fifoaddr = M66592_CFIFO;
		ep->fifosel = M66592_CFIFOSEL;
		ep->fifoctr = M66592_CFIFOCTR;
		ep->fifotrn = 0;
	}

	ep->pipectr = get_pipectr_addr(pipenum);
	ep->pipenum = pipenum;
	ep->ep.maxpacket = usb_endpoint_maxp(desc);
	m66592->pipenum2ep[pipenum] = ep;
	m66592->epaddr2ep[desc->bEndpointAddress&USB_ENDPOINT_NUMBER_MASK] = ep;
	INIT_LIST_HEAD(&ep->queue);
}

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yoshihiro shimoda yoshihiro shimoda 252 96.92% 2 50.00%
magnus damm magnus damm 7 2.69% 1 25.00%
kuninori morimoto kuninori morimoto 1 0.38% 1 25.00%
Total 260 100.00% 4 100.00%



static void m66592_ep_release(struct m66592_ep *ep)
{
	struct m66592 *m66592 = ep->m66592;
	u16 pipenum = ep->pipenum;

	if (pipenum == 0)
		return;

	if (ep->use_dma)
		m66592->num_dma--;
	ep->pipenum = 0;
	ep->busy = 0;
	ep->use_dma = 0;
}

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yoshihiro shimoda yoshihiro shimoda 63 100.00% 1 100.00%
Total 63 100.00% 1 100.00%



static int alloc_pipe_config(struct m66592_ep *ep,
		const struct usb_endpoint_descriptor *desc)
{
	struct m66592 *m66592 = ep->m66592;
	struct m66592_pipe_info info;
	int dma = 0;
	int *counter;
	int ret;

	ep->ep.desc = desc;

	BUG_ON(ep->pipenum);

	switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
	case USB_ENDPOINT_XFER_BULK:
		if (m66592->bulk >= M66592_MAX_NUM_BULK) {
			if (m66592->isochronous >= M66592_MAX_NUM_ISOC) {
				pr_err("bulk pipe is insufficient\n");
				return -ENODEV;
			} else {
				info.pipe = M66592_BASE_PIPENUM_ISOC
						+ m66592->isochronous;
				counter = &m66592->isochronous;
			}
		} else {
			info.pipe = M66592_BASE_PIPENUM_BULK + m66592->bulk;
			counter = &m66592->bulk;
		}
		info.type = M66592_BULK;
		dma = 1;
		break;
	case USB_ENDPOINT_XFER_INT:
		if (m66592->interrupt >= M66592_MAX_NUM_INT) {
			pr_err("interrupt pipe is insufficient\n");
			return -ENODEV;
		}
		info.pipe = M66592_BASE_PIPENUM_INT + m66592->interrupt;
		info.type = M66592_INT;
		counter = &m66592->interrupt;
		break;
	case USB_ENDPOINT_XFER_ISOC:
		if (m66592->isochronous >= M66592_MAX_NUM_ISOC) {
			pr_err("isochronous pipe is insufficient\n");
			return -ENODEV;
		}
		info.pipe = M66592_BASE_PIPENUM_ISOC + m66592->isochronous;
		info.type = M66592_ISO;
		counter = &m66592->isochronous;
		break;
	default:
		pr_err("unexpect xfer type\n");
		return -EINVAL;
	}
	ep->type = info.type;

	info.epnum = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
	info.maxpacket = usb_endpoint_maxp(desc);
	info.interval = desc->bInterval;
	if (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
		info.dir_in = 1;
	else
		info.dir_in = 0;

	ret = pipe_buffer_setting(m66592, &info);
	if (ret < 0) {
		pr_err("pipe_buffer_setting fail\n");
		return ret;
	}

	(*counter)++;
	if ((counter == &m66592->isochronous) && info.type == M66592_BULK)
		m66592->bulk++;

	m66592_ep_setting(m66592, ep, desc, info.pipe, dma);
	pipe_initialize(ep);

	return 0;
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 377 97.92% 2 40.00%
david brownell david brownell 5 1.30% 1 20.00%
ido shayevitz ido shayevitz 2 0.52% 1 20.00%
kuninori morimoto kuninori morimoto 1 0.26% 1 20.00%
Total 385 100.00% 5 100.00%



static int free_pipe_config(struct m66592_ep *ep)
{
	struct m66592 *m66592 = ep->m66592;
	struct m66592_pipe_info info;

	info.pipe = ep->pipenum;
	info.type = ep->type;
	pipe_buffer_release(m66592, &info);
	m66592_ep_release(ep);

	return 0;
}

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yoshihiro shimoda yoshihiro shimoda 56 100.00% 1 100.00%
Total 56 100.00% 1 100.00%

/*-------------------------------------------------------------------------*/


static void pipe_irq_enable(struct m66592 *m66592, u16 pipenum)
{
	enable_irq_ready(m66592, pipenum);
	enable_irq_nrdy(m66592, pipenum);
}

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yoshihiro shimoda yoshihiro shimoda 28 100.00% 1 100.00%
Total 28 100.00% 1 100.00%



static void pipe_irq_disable(struct m66592 *m66592, u16 pipenum)
{
	disable_irq_ready(m66592, pipenum);
	disable_irq_nrdy(m66592, pipenum);
}

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Total 28 100.00% 1 100.00%

/* if complete is true, gadget driver complete function is not call */


static void control_end(struct m66592 *m66592, unsigned ccpl)
{
	m66592->ep[0].internal_ccpl = ccpl;
	pipe_start(m66592, 0);
	m66592_bset(m66592, M66592_CCPL, M66592_DCPCTR);
}

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yoshihiro shimoda yoshihiro shimoda 41 100.00% 1 100.00%
Total 41 100.00% 1 100.00%



static void start_ep0_write(struct m66592_ep *ep, struct m66592_request *req)
{
	struct m66592 *m66592 = ep->m66592;

	pipe_change(m66592, ep->pipenum);
	m66592_mdfy(m66592, M66592_ISEL | M66592_PIPE0,
			(M66592_ISEL | M66592_CURPIPE),
			M66592_CFIFOSEL);
	m66592_write(m66592, M66592_BCLR, ep->fifoctr);
	if (req->req.length == 0) {
		m66592_bset(m66592, M66592_BVAL, ep->fifoctr);
		pipe_start(m66592, 0);
		transfer_complete(ep, req, 0);
	} else {
		m66592_write(m66592, ~M66592_BEMP0, M66592_BEMPSTS);
		irq_ep0_write(ep, req);
	}
}

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yoshihiro shimoda yoshihiro shimoda 121 100.00% 1 100.00%
Total 121 100.00% 1 100.00%



static void start_packet_write(struct m66592_ep *ep, struct m66592_request *req)
{
	struct m66592 *m66592 = ep->m66592;
	u16 tmp;

	pipe_change(m66592, ep->pipenum);
	disable_irq_empty(m66592, ep->pipenum);
	pipe_start(m66592, ep->pipenum);

	tmp = m66592_read(m66592, ep->fifoctr);
	if (unlikely((tmp & M66592_FRDY) == 0))
		pipe_irq_enable(m66592, ep->pipenum);
	else
		irq_packet_write(ep, req);
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 96 100.00% 1 100.00%
Total 96 100.00% 1 100.00%



static void start_packet_read(struct m66592_ep *ep, struct m66592_request *req)
{
	struct m66592 *m66592 = ep->m66592;
	u16 pipenum = ep->pipenum;

	if (ep->pipenum == 0) {
		m66592_mdfy(m66592, M66592_PIPE0,
				(M66592_ISEL | M66592_CURPIPE),
				M66592_CFIFOSEL);
		m66592_write(m66592, M66592_BCLR, ep->fifoctr);
		pipe_start(m66592, pipenum);
		pipe_irq_enable(m66592, pipenum);
	} else {
		if (ep->use_dma) {
			m66592_bset(m66592, M66592_TRCLR, ep->fifosel);
			pipe_change(m66592, pipenum);
			m66592_bset(m66592, M66592_TRENB, ep->fifosel);
			m66592_write(m66592,
				(req->req.length + ep->ep.maxpacket - 1)
					/ ep->ep.maxpacket,
				ep->fifotrn);
		}
		pipe_start(m66592, pipenum);	/* trigger once */
		pipe_irq_enable(m66592, pipenum);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
yoshihiro shimoda yoshihiro shimoda 168 100.00% 1 100.00%
Total 168 100.00% 1 100.00%



static void start_packet(struct m66592_ep *ep, struct m66592_request *req)
{
	if (ep->ep.desc->bEndpointAddress & USB_DIR_IN)
		start_packet_write(ep, req);
	else
		start_packet_read(ep, req);
}

Contributors
Person Tokens Prop Commits CommitProp
yoshihiro shimoda yoshihiro shimoda 41 95.35% 1 50.00%
ido shayevitz ido shayevitz 2 4.65% 1 50.00%
Total 43 100.00% 2 100.00%



static void start_ep0(struct m66592_ep *ep, struct m66592_request *req)
{
	u16 ctsq;

	ctsq = m66592_read(ep->m66592, M66592_INTSTS0) & M66592_CTSQ;

	switch (ctsq) {
	case M66592_CS_RDDS:
		start_ep0_write(ep, req);
		break;
	case M66592_CS_WRDS:
		start_packet_read(ep, req);
		break;

	case M66592_CS_WRND:
		control_end(ep->m66592, 0);
		break;
	default:
		pr_err("start_ep0: unexpect ctsq(%x)\n", ctsq);
		break;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
yoshihiro shimoda yoshihiro shimoda 81 98.78% 1 50.00%
david brownell david brownell 1 1.22% 1 50.00%
Total 82 100.00% 2 100.00%



static void init_controller(struct m66592 *m66592)
{
	unsigned int endian;

	if (m66592->pdata->on_chip) {
		if (m66592->pdata->endian)
			endian = 0; /* big endian */
		else
			endian = M66592_LITTLE; /* little endian */

		m66592_bset(m66592, M66592_HSE, M66592_SYSCFG);	/* High spd */
		m66592_bclr(m66592, M66592_USBE, M66592_SYSCFG);
		m66592_bclr(m66592, M66592_DPRPU, M66592_SYSCFG);
		m66592_bset(m66592, M66592_USBE, M66592_SYSCFG);

		/* This is a workaound for SH7722 2nd cut */
		m66592_bset(m66592, 0x8000, M66592_DVSTCTR);
		m66592_bset(m66592, 0x1000, M66592_TESTMODE);
		m66592_bclr(m66592, 0x8000, M66592_DVSTCTR);

		m66592_bset(m66592, M66592_INTL, M66592_INTENB1);

		m66592_write(m66592, 0, M66592_CFBCFG);
		m66592_write(m66592, 0, M66592_D0FBCFG);
		m66592_bset(m66592, endian, M66592_CFBCFG);
		m66592_bset(m66592, endian, M66592_D0FBCFG);
	} else {
		unsigned int clock, vif, irq_sense;

		if (m66592->pdata->endian)
			endian = M66592_BIGEND; /* big endian */
		else
			endian = 0; /* little endian */

		if (m66592->pdata->vif)
			vif = M66592_LDRV; /* 3.3v */
		else
			vif = 0; /* 1.5v */

		switch (m66592->pdata->xtal) {
		case M66592_PLATDATA_XTAL_12MHZ:
			clock = M66592_XTAL12;
			break;
		case M66592_PLATDATA_XTAL_24MHZ:
			clock = M66592_XTAL24;
			break;
		case M66592_PLATDATA_XTAL_48MHZ:
			clock = M66592_XTAL48;
			break;
		default:
			pr_warning("m66592-udc: xtal configuration error\n");
			clock = 0;
		}

		switch (m66592->irq_trigger) {
		case IRQF_TRIGGER_LOW:
			irq_sense = M66592_INTL;
			break;
		case IRQF_TRIGGER_FALLING:
			irq_sense = 0;
			break;
		default:
			pr_warning("m66592-udc: irq trigger config error\n");
			irq_sense = 0;
		}

		m66592_bset(m66592,
			    (vif & M66592_LDRV) | (endian & M66592_BIGEND),
			    M66592_PINCFG);
		m66592_bset(m66592, M66592_HSE, M66592_SYSCFG);	/* High spd */
		m66592_mdfy(m66592, clock & M66592_XTAL, M66592_XTAL,
			    M66592_SYSCFG);
		m66592_bclr(m66592, M66592_USBE, M66592_SYSCFG);
		m66592_bclr(m66592, M66592_DPRPU, M66592_SYSCFG);
		m66592_bset(m66592, M66592_USBE, M66592_SYSCFG);

		m66592_bset(m66592, M66592_XCKE, M66592_SYSCFG);

		msleep(3);

		m66592_bset(m66592, M66592_RCKE | M66592_PLLC, M66592_SYSCFG);

		msleep(1);

		m66592_bset(m66592, M66592_SCKE, M66592_SYSCFG);

		m66592_bset(m66592, irq_sense & M66592_INTL, M66592_INTENB1);
		m66592_write(m66592, M66592_BURST | M66592_CPU_ADR_RD_WR,
			     M66592_DMA0CFG);
	}
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 255 62.04% 2 66.67%
magnus damm magnus damm 156 37.96% 1 33.33%
Total 411 100.00% 3 100.00%



static void disable_controller(struct m66592 *m66592)
{
	m66592_bclr(m66592, M66592_UTST, M66592_TESTMODE);
	if (!m66592->pdata->on_chip) {
		m66592_bclr(m66592, M66592_SCKE, M66592_SYSCFG);
		udelay(1);
		m66592_bclr(m66592, M66592_PLLC, M66592_SYSCFG);
		udelay(1);
		m66592_bclr(m66592, M66592_RCKE, M66592_SYSCFG);
		udelay(1);
		m66592_bclr(m66592, M66592_XCKE, M66592_SYSCFG);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
yoshihiro shimoda yoshihiro shimoda 71 86.59% 2 50.00%
magnus damm magnus damm 11 13.41% 2 50.00%
Total 82 100.00% 4 100.00%



static void m66592_start_xclock(struct m66592 *m66592)
{
	u16 tmp;

	if (!m66592->pdata->on_chip) {
		tmp = m66592_read(m66592, M66592_SYSCFG);
		if (!(tmp & M66592_XCKE))
			m66592_bset(m66592, M66592_XCKE, M66592_SYSCFG);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
yoshihiro shimoda yoshihiro shimoda 41 78.85% 1 50.00%
magnus damm magnus damm 11 21.15% 1 50.00%
Total 52 100.00% 2 100.00%

/*-------------------------------------------------------------------------*/

static void transfer_complete(struct m66592_ep *ep,
		struct m66592_request *req, int status)
__releases(m66592->lock)
__acquires(m66592->lock)
{
	int restart = 0;

	if (unlikely(ep->pipenum == 0)) {
		if (ep->internal_ccpl) {
			ep->internal_ccpl = 0;
			return;
		}
	}

	list_del_init(&req->queue);
	if (ep->m66592->gadget.speed == USB_SPEED_UNKNOWN)
		req->req.status = -ESHUTDOWN;
	else
		req->req.status = status;

	if (!list_empty(&ep->queue))
		restart = 1;

	spin_unlock(&ep->m66592->lock);
	usb_gadget_giveback_request(&ep->ep, &req->req);
	spin_lock(&ep->m66592->lock);

	if (restart) {
		req = list_entry(ep->queue.next, struct m66592_request, queue);
		if (ep->ep.desc)
			start_packet(ep, req);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
yoshihiro shimoda yoshihiro shimoda 184 98.40% 2 50.00%
ido shayevitz ido shayevitz 2 1.07% 1 25.00%
michal sojka michal sojka 1 0.53% 1 25.00%
Total 187 100.00% 4 100.00%



static void irq_ep0_write(struct m66592_ep *ep, struct m66592_request *req)
{
	int i;
	u16 tmp;
	unsigned bufsize;
	size_t size;
	void *buf;
	u16 pipenum = ep->pipenum;
	struct m66592 *m66592 = ep->m66592;

	pipe_change(m66592, pipenum);
	m66592_bset(m66592, M66592_ISEL, ep->fifosel);

	i = 0;
	do {
		tmp = m66592_read(m66592, ep->fifoctr);
		if (i++ > 100000) {
			pr_err("pipe0 is busy. maybe cpu i/o bus "
				"conflict. please power off this controller.");
			return;
		}
		ndelay(1);
	} while ((tmp & M66592_FRDY) == 0);

	/* prepare parameters */
	bufsize = get_buffer_size(m66592, pipenum);
	buf = req->req.buf + req->req.actual;
	size = min(bufsize, req->req.length - req->req.actual);

	/* write fifo */
	if (req->req.buf) {
		if (size > 0)
			m66592_write_fifo(m66592, ep, buf, size);
		if ((size == 0) || ((size % ep->ep.maxpacket) != 0))
			m66592_bset(m66592, M66592_BVAL, ep->fifoctr);
	}

	/* update parameters */
	req->req.actual += size;

	/* check transfer finish */
	if ((!req->req.zero && (req->req.actual == req->req.length))
			|| (size % ep->ep.maxpacket)
			|| (size == 0)) {
		disable_irq_ready(m66592, pipenum);
		disable_irq_empty(m66592, pipenum);
	} else {
		disable_irq_ready(m66592, pipenum);
		enable_irq_empty(m66592, pipenum);
	}
	pipe_start(m66592, pipenum);
}

Contributors
Person Tokens Prop Commits CommitProp
yoshihiro shimoda yoshihiro shimoda 309 99.36% 1 33.33%
joe perches joe perches 1 0.32% 1 33.33%
david brownell david brownell 1 0.32% 1 33.33%
Total 311 100.00% 3 100.00%



static void irq_packet_write(struct m66592_ep *ep, struct m66592_request *req)
{
	u16 tmp;
	unsigned bufsize;
	size_t size;
	void *buf;
	u16 pipenum = ep->pipenum;
	struct m66592 *m66592 = ep->m66592;

	pipe_change(m66592, pipenum);
	tmp = m66592_read(m66592, ep->fifoctr);
	if (unlikely((tmp & M66592_FRDY) == 0)) {
		pipe_stop(m66592, pipenum);
		pipe_irq_disable(m66592, pipenum);
		pr_err("write fifo not ready. pipnum=%d\n", pipenum);
		return;
	}

	/* prepare parameters */
	bufsize = get_buffer_size(m66592, pipenum);
	buf = req->req.buf + req->req.actual;
	size = min(bufsize, req->req.length - req->req.actual);

	/* write fifo */
	if (req->req.buf) {
		m66592_write_fifo(m66592, ep, buf, size);
		if ((size == 0)
				|| ((size % ep->ep.maxpacket) != 0)
				|| ((bufsize != ep->ep.maxpacket)
					&& (bufsize > size)))
			m66592_bset(m66592, M66592_BVAL, ep->fifoctr);
	}

	/* update parameters */
	req->req.actual += size;
	/* check transfer finish */
	if ((!req->req.zero && (req->req.actual == req->req.length))
			|| (size % ep->ep.maxpacket)
			|| (size == 0)) {
		disable_irq_ready(m66592, pipenum);
		enable_irq_empty(m66592, pipenum);
	} else {
		disable_irq_empty(m66592, pipenum);
		pipe_irq_enable(m66592, pipenum);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
yoshihiro shimoda yoshihiro shimoda 299 99.67% 1 50.00%
david brownell david brownell 1 0.33% 1 50.00%
Total 300 100.00% 2 100.00%



static void irq_packet_read(struct m66592_ep *ep, struct m66592_request *req)
{
	u16 tmp;
	int rcv_len, bufsize, req_len;
	int size;
	void *buf;
	u16 pipenum = ep->pipenum;
	struct m66592 *m66592 = ep->m66592;
	int finish = 0;

	pipe_change(m66592, pipenum);
	tmp = m66592_read(m66592, ep->fifoctr);
	if (unlikely((tmp & M66592_FRDY) == 0)) {
		req->req.status = -EPIPE;
		pipe_stop(m66592, pipenum);
		pipe_irq_disable(m66592, pipenum);
		pr_err("read fifo not ready");
		return;
	}

	/* prepare parameters */
	rcv_len = tmp & M66592_DTLN;
	bufsize = get_buffer_size(m66592, pipenum);

	buf = req->req.buf + req->req.actual;
	req_len = req->req.length - req->req.actual;
	if (rcv_len < bufsize)
		size = min(rcv_len, req_len);
	else
		size = min(bufsize, req_len);

	/* update parameters */
	req->req.actual += size;

	/* check transfer finish */
	if ((!req->req.zero && (req->req.actual == req->req.length))
			|| (size % ep->ep.maxpacket)
			|| (size == 0)) {
		pipe_stop(m66592, pipenum);
		pipe_irq_disable(m66592, pipenum);
		finish = 1;
	}

	/* read fifo */
	if (req->req.buf) {
		if (size == 0)
			m66592_write(m66592, M66592_BCLR, ep->fifoctr);
		else
			m66592_read_fifo(m66592, ep->fifoaddr, buf, size);
	}

	if ((ep->pipenum != 0) && finish)
		transfer_complete(ep, req, 0);
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 318 99.69% 1 50.00%
david brownell david brownell 1 0.31% 1 50.00%
Total 319 100.00% 2 100.00%



static void irq_pipe_ready(struct m66592 *m66592, u16 status, u16 enb)
{
	u16 check;
	u16 pipenum;
	struct m66592_ep *ep;
	struct m66592_request *req;

	if ((status & M66592_BRDY0) && (enb & M66592_BRDY0)) {
		m66592_write(m66592, ~M66592_BRDY0, M66592_BRDYSTS);
		m66592_mdfy(m66592, M66592_PIPE0, M66592_CURPIPE,
				M66592_CFIFOSEL);

		ep = &m66592->ep[0];
		req = list_entry(ep->queue.next, struct m66592_request, queue);
		irq_packet_read(ep, req);
	} else {
		for (pipenum = 1; pipenum < M66592_MAX_NUM_PIPE; pipenum++) {
			check = 1 << pipenum;
			if ((status & check) && (enb & check)) {
				m66592_write(m66592, ~check, M66592_BRDYSTS);
				ep = m66592->pipenum2ep[pipenum];
				req = list_entry(ep->queue.next,
						 struct m66592_request, queue);
				if (ep->ep.desc->bEndpointAddress & USB_DIR_IN)
					irq_packet_write(ep, req);
				else
					irq_packet_read(ep, req);
			}
		}
	}
}

Contributors
Person Tokens Prop Commits CommitProp
yoshihiro shimoda yoshihiro shimoda 203 99.02% 1 50.00%
ido shayevitz ido shayevitz 2 0.98% 1 50.00%
Total 205 100.00% 2 100.00%



static void irq_pipe_empty(struct m66592 *m66592, u16 status, u16 enb)
{
	u16 tmp;
	u16 check;
	u16 pipenum;
	struct m66592_ep *ep;
	struct m66592_request *req;

	if ((status & M66592_BEMP0) && (enb & M66592_BEMP0)) {
		m66592_write(m66592, ~M66592_BEMP0, M66592_BEMPSTS);

		ep = &m66592->ep[0];
		req = list_entry(ep->queue.next, struct m66592_request, queue);
		irq_ep0_write(ep, req);
	} else {
		for (pipenum = 1; pipenum < M66592_MAX_NUM_PIPE; pipenum++) {
			check = 1 << pipenum;
			if ((status & check) && (enb & check)) {
				m66592_write(m66592, ~check, M66592_BEMPSTS);
				tmp = control_reg_get(m66592, pipenum);
				if ((tmp & M66592_INBUFM) == 0) {
					disable_irq_empty(m66592, pipenum);
					pipe_irq_disable(m66592, pipenum);
					pipe_stop(m66592, pipenum);
					ep = m66592->pipenum2ep[pipenum];
					req = list_entry(ep->queue.next,
							 struct m66592_request,
							 queue);
					if (!list_empty(&ep->queue))
						transfer_complete(ep, req, 0);
				}
			}
		}
	}
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 232 100.00% 1 100.00%
Total 232 100.00% 1 100.00%


static void get_status(struct m66592 *m66592, struct usb_ctrlrequest *ctrl)
__releases(m66592->lock)
__acquires(m66592->lock)
{
	struct m66592_ep *ep;
	u16 pid;
	u16 status = 0;
	u16 w_index = le16_to_cpu(ctrl->wIndex);

	switch (ctrl->bRequestType & USB_RECIP_MASK) {
	case USB_RECIP_DEVICE:
		status = 1 << USB_DEVICE_SELF_POWERED;
		break;
	case USB_RECIP_INTERFACE:
		status = 0;
		break;
	case USB_RECIP_ENDPOINT:
		ep = m66592->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK];
		pid = control_reg_get_pid(m66592, ep->pipenum);
		if (pid == M66592_PID_STALL)
			status = 1 << USB_ENDPOINT_HALT;
		else
			status = 0;
		break;
	default:
		pipe_stall(m66592, 0);
		return;		/* exit */
	}

	m66592->ep0_data = cpu_to_le16(status);
	m66592->ep0_req->buf = &m66592->ep0_data;
	m66592->ep0_req->length = 2;
	/* AV: what happens if we get called again before that gets through? */
	spin_unlock(&m66592->lock);
	m66592_queue(m66592->gadget.ep0, m66592->ep0_req, GFP_KERNEL);
	spin_lock(&m66592->lock);
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 191 99.48% 2 66.67%
al viro al viro 1 0.52% 1 33.33%
Total 192 100.00% 3 100.00%



static void clear_feature(struct m66592 *m66592, struct usb_ctrlrequest *ctrl)
{
	switch (ctrl->bRequestType & USB_RECIP_MASK) {
	case USB_RECIP_DEVICE:
		control_end(m66592, 1);
		break;
	case USB_RECIP_INTERFACE:
		control_end(m66592, 1);
		break;
	case USB_RECIP_ENDPOINT: {
		struct m66592_ep *ep;
		struct m66592_request *req;
		u16 w_index = le16_to_cpu(ctrl->wIndex);

		ep = m66592->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK];
		pipe_stop(m66592, ep->pipenum);
		control_reg_sqclr(m66592, ep->pipenum);

		control_end(m66592, 1);

		req = list_entry(ep->queue.next,
		struct m66592_request, queue);
		if (ep->busy) {
			ep->busy = 0;
			if (list_empty(&ep->queue))
				break;
			start_packet(ep, req);
		} else if (!list_empty(&ep->queue))
			pipe_start(m66592, ep->pipenum);
		}
		break;
	default:
		pipe_stall(m66592, 0);
		break;
	}
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 188 100.00% 2 100.00%
Total 188 100.00% 2 100.00%



static void set_feature(struct m66592 *m66592, struct usb_ctrlrequest *ctrl)
{
	u16 tmp;
	int timeout = 3000;

	switch (ctrl->bRequestType & USB_RECIP_MASK) {
	case USB_RECIP_DEVICE:
		switch (le16_to_cpu(ctrl->wValue)) {
		case USB_DEVICE_TEST_MODE:
			control_end(m66592, 1);
			/* Wait for the completion of status stage */
			do {
				tmp = m66592_read(m66592, M66592_INTSTS0) &
								M66592_CTSQ;
				udelay(1);
			} while (tmp != M66592_CS_IDST && timeout-- > 0);

			if (tmp == M66592_CS_IDST)
				m66592_bset(m66592,
					    le16_to_cpu(ctrl->wIndex >> 8),
					    M66592_TESTMODE);
			break;
		default:
			pipe_stall(m66592, 0);
			break;
		}
		break;
	case USB_RECIP_INTERFACE:
		control_end(m66592, 1);
		break;
	case USB_RECIP_ENDPOINT: {
		struct m66592_ep *ep;
		u16 w_index = le16_to_cpu(ctrl->wIndex);

		ep = m66592->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK];
		pipe_stall(m66592, ep->pipenum);

		control_end(m66592, 1);
		}
		break;
	default:
		pipe_stall(m66592, 0);
		break;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
yoshihiro shimoda yoshihiro shimoda 190 99.48% 3 75.00%
dan carpenter dan carpenter 1 0.52% 1 25.00%
Total 191 100.00% 4 100.00%

/* if return value is true, call class driver's setup() */


static int setup_packet(struct m66592 *m66592, struct usb_ctrlrequest *ctrl)
{
	u16 *p = (u16 *)ctrl;
	unsigned long offset = M66592_USBREQ;
	int i, ret = 0;

	/* read fifo */
	m66592_write(m66592, ~M66592_VALID, M66592_INTSTS0);

	for (i = 0; i < 4; i++)
		p[i] = m66592_read(m66592, offset + i*2);

	/* check request */
	if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) {
		switch (ctrl->bRequest) {
		case USB_REQ_GET_STATUS:
			get_status(m66592, ctrl);
			break;
		case USB_REQ_CLEAR_FEATURE:
			clear_feature(m66592, ctrl);
			break;
		case USB_REQ_SET_FEATURE:
			set_feature(m66592, ctrl);
			break;
		default:
			ret = 1;
			break;
		}
	} else
		ret = 1;
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
yoshihiro shimoda yoshihiro shimoda 149 100.00% 1 100.00%
Total 149 100.00% 1 100.00%



static void m66592_update_usb_speed(struct m66592 *m66592)
{
	u16 speed = get_usb_speed(m66592);

	switch (speed) {
	case M66592_HSMODE:
		m66592->gadget.speed = USB_SPEED_HIGH;
		break;
	case M66592_FSMODE:
		m66592->gadget.speed = USB_SPEED_FULL;
		break;
	default:
		m66592->gadget.speed = USB_SPEED_UNKNOWN;
		pr_err("USB speed unknown\n");
	}
}

Contributors
Person Tokens Prop Commits CommitProp
yoshihiro shimoda yoshihiro shimoda 62 98.41% 1 50.00%
david brownell david brownell 1 1.59% 1 50.00%
Total 63 100.00% 2 100.00%



static void irq_device_state(struct m66592 *m66592)
{
	u16 dvsq;

	dvsq = m66592_read(m66592, M66592_INTSTS0) & M66592_DVSQ;
	m66592_write(m66592, ~M66592_DVST, M66592_INTSTS0);

	if (dvsq == M66592_DS_DFLT) {	/* bus reset */
		usb_gadget_udc_reset(&m66592->gadget, m66592->driver);
		m66592_update_usb_speed(m66592);
	}
	if (m66592->old_dvsq == M66592_DS_CNFG && dvsq != M66592_DS_CNFG)
		m66592_update_usb_speed(m66592);
	if ((dvsq == M66592_DS_CNFG || dvsq == M66592_DS_ADDS)
			&& m66592->gadget.speed == USB_SPEED_UNKNOWN)
		m66592_update_usb_speed(m66592);

	m66592->old_dvsq = dvsq;
}

Contributors
Person Tokens Prop Commits CommitProp
yoshihiro shimoda yoshihiro shimoda 104 95.41% 1 50.00%
peter chen peter chen 5 4.59% 1 50.00%
Total 109 100.00% 2 100.00%


static void irq_control_stage(struct m66592 *m66592)
__releases(m66592->lock)
__acquires(m66592->lock)
{
	struct usb_ctrlrequest ctrl;
	u16 ctsq;

	ctsq = m66592_read(m66592, M66592_INTSTS0) & M66592_CTSQ;
	m66592_write(m66592, ~M66592_CTRT, M66592_INTSTS0);

	switch (ctsq) {
	case M66592_CS_IDST: {
		struct m66592_ep *ep;
		struct m66592_request *req;
		ep = &m66592->ep[0];
		req = list_entry(ep->queue.next, struct m66592_request, queue);
		transfer_complete(ep, req, 0);
		}
		break;

	case M66592_CS_RDDS:
	case M66592_CS_WRDS:
	case M66592_CS_WRND:
		if (setup_packet(m66592, &ctrl)) {
			spin_unlock(&m66592->lock);
			if (m66592->driver->setup(&m66592->gadget, &ctrl) < 0)
				pipe_stall(m66592, 0);
			spin_lock(&m66592->lock);
		}
		break;
	case M66592_CS_RDSS:
	case M66592_CS_WRSS:
		control_end(m66592, 0);
		break;
	default:
		pr_err("ctrl_stage: unexpect ctsq(%x)\n", ctsq);
		break;
	}
}

Contributors
Person Tokens Prop Commits CommitProp
yoshihiro shimoda yoshihiro shimoda 194 99.49% 2 66.67%
david brownell david brownell 1 0.51% 1 33.33%
Total 195 100.00% 3 100.00%



static irqreturn_t m66592_irq(int irq, void *_m66592)
{
	struct m66592 *m66592 = _m66592;
	u16 intsts0;
	u16 intenb0;
	u16 brdysts, nrdysts, bempsts;
	u16 brdyenb, nrdyenb, bempenb;
	u16 savepipe;
	u16 mask0;

	spin_lock(&m66592->lock);

	intsts0 = m66592_read(m66592, M66592_INTSTS0);
	intenb0 = m66592_read(m66592, M66592_INTENB0);

	if (m66592->pdata->on_chip && !intsts0 && !intenb0) {
		/*
                 * When USB clock stops, it cannot read register. Even if a
                 * clock stops, the interrupt occurs. So this driver turn on
                 * a clock by this timing and do re-reading of register.
                 */
		m66592_start_xclock(m66592);
		intsts0 = m66592_read(m66592, M66592_INTSTS0);
		intenb0 = m66592_read(m66592, M66592_INTENB0);
	}

	savepipe = m66592_read(m66592, M66592_CFIFOSEL);

	mask0 = intsts0 & intenb0;
	if (mask0) {
		brdysts = m66592_read(m66592, M66592_BRDYSTS);
		nrdysts = m66592_read(m66592, M66592_NRDYSTS);
		bempsts = m66592_read(m66592, M66592_BEMPSTS);
		brdyenb = m66592_read(m66592, M66592_BRDYENB);
		nrdyenb = m66592_read(m66592, M66592_NRDYENB);
		bempenb = m66592_read(m66592, M66592_BEMPENB);

		if (mask0 & M66592_VBINT) {
			m66592_write(m66592,  0xffff & ~M66592_VBINT,
					M66592_INTSTS0);
			m66592_start_xclock(m66592);

			/* start vbus sampling */
			m66592->old_vbus = m66592_read(m66592, M66592_INTSTS0)
					& M66592_VBSTS;
			m66592->scount = M66592_MAX_SAMPLING;

			mod_timer(&m66592->timer,
					jiffies + msecs_to_jiffies(50));
		}
		if (intsts0 & M66592_DVSQ)
			irq_device_state(m66592);

		if ((intsts0 & M66592_BRDY) && (intenb0 & M66592_BRDYE)
				&& (brdysts & brdyenb)) {
			irq_pipe_ready(m66592, brdysts, brdyenb);
		}
		if ((intsts0 & M66592_BEMP) && (intenb0 & M66592_BEMPE)
				&& (bempsts & bempenb)) {
			irq_pipe_empty(m66592, bempsts, bempenb);
		}

		if (intsts0 & M66592_CTRT)
			irq_control_stage(m66592);
	}

	m66592_write(m66592, savepipe, M66592_CFIFOSEL);

	spin_unlock(&m66592->lock);
	return IRQ_HANDLED;
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 345 98.29% 3 75.00%
magnus damm magnus damm 6 1.71% 1 25.00%
Total 351 100.00% 4 100.00%



static void m66592_timer(unsigned long _m66592)
{
	struct m66592 *m66592 = (struct m66592 *)_m66592;
	unsigned long flags;
	u16 tmp;

	spin_lock_irqsave(&m66592->lock, flags);
	tmp = m66592_read(m66592, M66592_SYSCFG);
	if (!(tmp & M66592_RCKE)) {
		m66592_bset(m66592, M66592_RCKE | M66592_PLLC, M66592_SYSCFG);
		udelay(10);
		m66592_bset(m66592, M66592_SCKE, M66592_SYSCFG);
	}
	if (m66592->scount > 0) {
		tmp = m66592_read(m66592, M66592_INTSTS0) & M66592_VBSTS;
		if (tmp == m66592->old_vbus) {
			m66592->scount--;
			if (m66592->scount == 0) {
				if (tmp == M66592_VBSTS)
					m66592_usb_connect(m66592);
				else
					m66592_usb_disconnect(m66592);
			} else {
				mod_timer(&m66592->timer,
					jiffies + msecs_to_jiffies(50));
			}
		} else {
			m66592->scount = M66592_MAX_SAMPLING;
			m66592->old_vbus = tmp;
			mod_timer(&m66592->timer,
					jiffies + msecs_to_jiffies(50));
		}
	}
	spin_unlock_irqrestore(&m66592->lock, flags);
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 205 100.00% 1 100.00%
Total 205 100.00% 1 100.00%

/*-------------------------------------------------------------------------*/


static int m66592_enable(struct usb_ep *_ep,
			 const struct usb_endpoint_descriptor *desc)
{
	struct m66592_ep *ep;

	ep = container_of(_ep, struct m66592_ep, ep);
	return alloc_pipe_config(ep, desc);
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 42 100.00% 1 100.00%
Total 42 100.00% 1 100.00%



static int m66592_disable(struct usb_ep *_ep)
{
	struct m66592_ep *ep;
	struct m66592_request *req;
	unsigned long flags;

	ep = container_of(_ep, struct m66592_ep, ep);
	BUG_ON(!ep);

	while (!list_empty(&ep->queue)) {
		req = list_entry(ep->queue.next, struct m66592_request, queue);
		spin_lock_irqsave(&ep->m66592->lock, flags);
		transfer_complete(ep, req, -ECONNRESET);
		spin_unlock_irqrestore(&ep->m66592->lock, flags);
	}

	pipe_irq_disable(ep->m66592, ep->pipenum);
	return free_pipe_config(ep);
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 123 100.00% 1 100.00%
Total 123 100.00% 1 100.00%



static struct usb_request *m66592_alloc_request(struct usb_ep *_ep,
						gfp_t gfp_flags)
{
	struct m66592_request *req;

	req = kzalloc(sizeof(struct m66592_request), gfp_flags);
	if (!req)
		return NULL;

	INIT_LIST_HEAD(&req->queue);

	return &req->req;
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 56 100.00% 1 100.00%
Total 56 100.00% 1 100.00%



static void m66592_free_request(struct usb_ep *_ep, struct usb_request *_req)
{
	struct m66592_request *req;

	req = container_of(_req, struct m66592_request, req);
	kfree(req);
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 38 100.00% 1 100.00%
Total 38 100.00% 1 100.00%



static int m66592_queue(struct usb_ep *_ep, struct usb_request *_req,
			gfp_t gfp_flags)
{
	struct m66592_ep *ep;
	struct m66592_request *req;
	unsigned long flags;
	int request = 0;

	ep = container_of(_ep, struct m66592_ep, ep);
	req = container_of(_req, struct m66592_request, req);

	if (ep->m66592->gadget.speed == USB_SPEED_UNKNOWN)
		return -ESHUTDOWN;

	spin_lock_irqsave(&ep->m66592->lock, flags);

	if (list_empty(&ep->queue))
		request = 1;

	list_add_tail(&req->queue, &ep->queue);
	req->req.actual = 0;
	req->req.status = -EINPROGRESS;

	if (ep->ep.desc == NULL)	/* control */
		start_ep0(ep, req);
	else {
		if (request && !ep->busy)
			start_packet(ep, req);
	}

	spin_unlock_irqrestore(&ep->m66592->lock, flags);

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
yoshihiro shimoda yoshihiro shimoda 183 98.39% 1 33.33%
ido shayevitz ido shayevitz 2 1.08% 1 33.33%
david brownell david brownell 1 0.54% 1 33.33%
Total 186 100.00% 3 100.00%



static int m66592_dequeue(struct usb_ep *_ep, struct usb_request *_req)
{
	struct m66592_ep *ep;
	struct m66592_request *req;
	unsigned long flags;

	ep = container_of(_ep, struct m66592_ep, ep);
	req = container_of(_req, struct m66592_request, req);

	spin_lock_irqsave(&ep->m66592->lock, flags);
	if (!list_empty(&ep->queue))
		transfer_complete(ep, req, -ECONNRESET);
	spin_unlock_irqrestore(&ep->m66592->lock, flags);

	return 0;
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 102 100.00% 1 100.00%
Total 102 100.00% 1 100.00%



static int m66592_set_halt(struct usb_ep *_ep, int value)
{
	struct m66592_ep *ep;
	struct m66592_request *req;
	unsigned long flags;
	int ret = 0;

	ep = container_of(_ep, struct m66592_ep, ep);
	req = list_entry(ep->queue.next, struct m66592_request, queue);

	spin_lock_irqsave(&ep->m66592->lock, flags);
	if (!list_empty(&ep->queue)) {
		ret = -EAGAIN;
		goto out;
	}
	if (value) {
		ep->busy = 1;
		pipe_stall(ep->m66592, ep->pipenum);
	} else {
		ep->busy = 0;
		pipe_stop(ep->m66592, ep->pipenum);
	}

out:
	spin_unlock_irqrestore(&ep->m66592->lock, flags);
	return ret;
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 154 100.00% 1 100.00%
Total 154 100.00% 1 100.00%



static void m66592_fifo_flush(struct usb_ep *_ep)
{
	struct m66592_ep *ep;
	unsigned long flags;

	ep = container_of(_ep, struct m66592_ep, ep);
	spin_lock_irqsave(&ep->m66592->lock, flags);
	if (list_empty(&ep->queue) && !ep->busy) {
		pipe_stop(ep->m66592, ep->pipenum);
		m66592_bclr(ep->m66592, M66592_BCLR, ep->fifoctr);
	}
	spin_unlock_irqrestore(&ep->m66592->lock, flags);
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 97 100.00% 1 100.00%
Total 97 100.00% 1 100.00%


static struct usb_ep_ops m66592_ep_ops = {
	.enable		= m66592_enable,
	.disable	= m66592_disable,

	.alloc_request	= m66592_alloc_request,
	.free_request	= m66592_free_request,

	.queue		= m66592_queue,
	.dequeue	= m66592_dequeue,

	.set_halt	= m66592_set_halt,
	.fifo_flush	= m66592_fifo_flush,
};

/*-------------------------------------------------------------------------*/


static int m66592_udc_start(struct usb_gadget *g,
		struct usb_gadget_driver *driver)
{
	struct m66592 *m66592 = to_m66592(g);

	/* hook up the driver */
	driver->driver.bus = NULL;
	m66592->driver = driver;

	m66592_bset(m66592, M66592_VBSE | M66592_URST, M66592_INTENB0);
	if (m66592_read(m66592, M66592_INTSTS0) & M66592_VBSTS) {
		m66592_start_xclock(m66592);
		/* start vbus sampling */
		m66592->old_vbus = m66592_read(m66592,
					 M66592_INTSTS0) & M66592_VBSTS;
		m66592->scount = M66592_MAX_SAMPLING;
		mod_timer(&m66592->timer, jiffies + msecs_to_jiffies(50));
	}

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
yoshihiro shimoda yoshihiro shimoda 92 85.19% 1 20.00%
felipe balbi felipe balbi 7 6.48% 1 20.00%
sebastian andrzej siewior sebastian andrzej siewior 5 4.63% 2 40.00%
uwe kleine-koenig uwe kleine-koenig 4 3.70% 1 20.00%
Total 108 100.00% 5 100.00%



static int m66592_udc_stop(struct usb_gadget *g)
{
	struct m66592 *m66592 = to_m66592(g);

	m66592_bclr(m66592, M66592_VBSE | M66592_URST, M66592_INTENB0);

	init_controller(m66592);
	disable_controller(m66592);

	m66592->driver = NULL;

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
yoshihiro shimoda yoshihiro shimoda 43 84.31% 1 33.33%
felipe balbi felipe balbi 7 13.73% 1 33.33%
sebastian andrzej siewior sebastian andrzej siewior 1 1.96% 1 33.33%
Total 51 100.00% 3 100.00%

/*-------------------------------------------------------------------------*/


static int m66592_get_frame(struct usb_gadget *_gadget)
{
	struct m66592 *m66592 = gadget_to_m66592(_gadget);
	return m66592_read(m66592, M66592_FRMNUM) & 0x03FF;
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 31 100.00% 1 100.00%
Total 31 100.00% 1 100.00%



static int m66592_pullup(struct usb_gadget *gadget, int is_on)
{
	struct m66592 *m66592 = gadget_to_m66592(gadget);
	unsigned long flags;

	spin_lock_irqsave(&m66592->lock, flags);
	if (is_on)
		m66592_bset(m66592, M66592_DPRPU, M66592_SYSCFG);
	else
		m66592_bclr(m66592, M66592_DPRPU, M66592_SYSCFG);
	spin_unlock_irqrestore(&m66592->lock, flags);

	return 0;
}

Contributors
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yoshihiro shimoda yoshihiro shimoda 74 100.00% 1 100.00%
Total 74 100.00% 1 100.00%


static const struct usb_gadget_ops m66592_gadget_ops = {
	.get_frame		= m66592_get_frame,
	.udc_start		= m66592_udc_start,
	.udc_stop		= m66592_udc_stop,
	.pullup			= m66592_pullup,
};



static int m66592_remove(struct platform_device *pdev)
{
	struct m66592		*m66592 = platform_get_drvdata(pdev);

	usb_del_gadget_udc(&m66592->gadget);

	del_timer_sync(&m66592->timer);
	iounmap(m66592->reg);
	free_irq(platform_get_irq(pdev, 0), m66592);
	m66592_free_request(&m66592->ep[0].ep, m66592->ep0_req);
	if (m66592->pdata->on_chip) {
		clk_disable(m66592->clk);
		clk_put(m66592->clk);
	}
	kfree(m66592);
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
yoshihiro shimoda yoshihiro shimoda 73 69.52% 3 42.86%
magnus damm magnus damm 23 21.90% 2 28.57%
sebastian andrzej siewior sebastian andrzej siewior 8 7.62% 1 14.29%
jingoo han jingoo han 1 0.95% 1 14.29%
Total 105 100.00% 7 100.00%



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

Contributors
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yoshihiro shimoda yoshihiro shimoda 15 100.00% 1 100.00%
Total 15 100.00% 1 100.00%



static int m66592_probe(struct platform_device *pdev)
{
	struct resource *res, *ires;
	void __iomem *reg = NULL;
	struct m66592 *m66592 = NULL;
	char clk_name[8];
	int ret = 0;
	int i;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		ret = -ENODEV;
		pr_err("platform_get_resource error.\n");
		goto clean_up;
	}

	ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
	if (!ires) {
		ret = -ENODEV;
		dev_err(&pdev->dev,
			"platform_get_resource IORESOURCE_IRQ error.\n");
		goto clean_up;
	}

	reg = ioremap(res->start, resource_size(res));
	if (reg == NULL) {
		ret = -ENOMEM;
		pr_err("ioremap error.\n");
		goto clean_up;
	}

	if (dev_get_platdata(&pdev->dev) == NULL) {
		dev_err(&pdev->dev, "no platform data\n");
		ret = -ENODEV;
		goto clean_up;
	}

	/* initialize ucd */
	m66592 = kzalloc(sizeof(struct m66592), GFP_KERNEL);
	if (m66592 == NULL) {
		ret = -ENOMEM;
		goto clean_up;
	}

	m66592->pdata = dev_get_platdata(&pdev->dev);
	m66592->irq_trigger = ires->flags & IRQF_TRIGGER_MASK;

	spin_lock_init(&m66592->lock);
	platform_set_drvdata(pdev, m66592);

	m66592->gadget.ops = &m66592_gadget_ops;
	m66592->gadget.max_speed = USB_SPEED_HIGH;
	m66592->gadget.name = udc_name;

	init_timer(&m66592->timer);
	m66592->timer.function = m66592_timer;
	m66592->timer.data = (unsigned long)m66592;
	m66592->reg = reg;

	ret = request_irq(ires->start, m66592_irq, IRQF_SHARED,
			udc_name, m66592);
	if (ret < 0) {
		pr_err("request_irq error (%d)\n", ret);
		goto clean_up;
	}

	if (m66592->pdata->on_chip) {
		snprintf(clk_name, sizeof(clk_name), "usbf%d", pdev->id);
		m66592->clk = clk_get(&pdev->dev, clk_name);
		if (IS_ERR(m66592->clk)) {
			dev_err(&pdev->dev, "cannot get clock \"%s\"\n",
				clk_name);
			ret = PTR_ERR(m66592->clk);
			goto clean_up2;
		}
		clk_enable(m66592->clk);
	}

	INIT_LIST_HEAD(&m66592->gadget.ep_list);
	m66592->gadget.ep0 = &m66592->ep[0].ep;
	INIT_LIST_HEAD(&m66592->gadget.ep0->ep_list);
	for (i = 0; i < M66592_MAX_NUM_PIPE; i++) {
		struct m66592_ep *ep = &m66592->ep[i];

		if (i != 0) {
			INIT_LIST_HEAD(&m66592->ep[i].ep.ep_list);
			list_add_tail(&m66592->ep[i].ep.ep_list,
					&m66592->gadget.ep_list);
		}
		ep->m66592 = m66592;
		INIT_LIST_HEAD(&ep->queue);
		ep->ep.name = m66592_ep_name[i];
		ep->ep.ops = &m66592_ep_ops;
		usb_ep_set_maxpacket_limit(&ep->ep, 512);

		if (i == 0) {
			ep->ep.caps.type_control = true;
		} else {
			ep->ep.caps.type_iso = true;
			ep->ep.caps.type_bulk = true;
			ep->ep.caps.type_int = true;
		}

		ep->ep.caps.dir_in = true;
		ep->ep.caps.dir_out = true;
	}
	usb_ep_set_maxpacket_limit(&m66592->ep[0].ep, 64);
	m66592->ep[0].pipenum = 0;
	m66592->ep[0].fifoaddr = M66592_CFIFO;
	m66592->ep[0].fifosel = M66592_CFIFOSEL;
	m66592->ep[0].fifoctr = M66592_CFIFOCTR;
	m66592->ep[0].fifotrn = 0;
	m66592->ep[0].pipectr = get_pipectr_addr(0);
	m66592->pipenum2ep[0] = &m66592->ep[0];
	m66592->epaddr2ep[0] = &m66592->ep[0];

	m66592->ep0_req = m66592_alloc_request(&m66592->ep[0].ep, GFP_KERNEL);
	if (m66592->ep0_req == NULL) {
		ret = -ENOMEM;
		goto clean_up3;
	}
	m66592->ep0_req->complete = nop_completion;

	init_controller(m66592);

	ret = usb_add_gadget_udc(&pdev->dev, &m66592->gadget);
	if (ret)
		goto err_add_udc;

	dev_info(&pdev->dev, "version %s\n", DRIVER_VERSION);
	return 0;

err_add_udc:
	m66592_free_request(&m66592->ep[0].ep, m66592->ep0_req);

clean_up3:
	if (m66592->pdata->on_chip) {
		clk_disable(m66592->clk);
		clk_put(m66592->clk);
	}
clean_up2:
	free_irq(ires->start, m66592);
clean_up:
	if (m66592) {
		if (m66592->ep0_req)
			m66592_free_request(&m66592->ep[0].ep, m66592->ep0_req);
		kfree(m66592);
	}
	if (reg)
		iounmap(reg);

	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
yoshihiro shimoda yoshihiro shimoda 620 64.92% 3 20.00%
magnus damm magnus damm 187 19.58% 3 20.00%
robert baldyga robert baldyga 81 8.48% 2 13.33%
sebastian andrzej siewior sebastian andrzej siewior 41 4.29% 1 6.67%
jingoo han jingoo han 9 0.94% 2 13.33%
wei yongjun wei yongjun 7 0.73% 1 6.67%
julia lawall julia lawall 5 0.52% 1 6.67%
david brownell david brownell 3 0.31% 1 6.67%
michal nazarewicz michal nazarewicz 2 0.21% 1 6.67%
Total 955 100.00% 15 100.00%

/*-------------------------------------------------------------------------*/

static struct platform_driver m66592_driver = {
	.remove =	m66592_remove,
	.driver		= {
		.name =	(char *) udc_name,
        },
};

module_platform_driver_probe(m66592_driver, m66592_probe);
Overall Contributors
Person Tokens Prop Commits CommitProp
yoshihiro shimoda yoshihiro shimoda 8227 91.87% 6 15.79%
magnus damm magnus damm 482 5.38% 4 10.53%
robert baldyga robert baldyga 81 0.90% 2 5.26%
sebastian andrzej siewior sebastian andrzej siewior 61 0.68% 2 5.26%
david brownell david brownell 22 0.25% 3 7.89%
felipe balbi felipe balbi 19 0.21% 2 5.26%
ido shayevitz ido shayevitz 10 0.11% 1 2.63%
jingoo han jingoo han 10 0.11% 2 5.26%
wei yongjun wei yongjun 7 0.08% 1 2.63%
kay sievers kay sievers 5 0.06% 1 2.63%
peter chen peter chen 5 0.06% 1 2.63%
julia lawall julia lawall 5 0.06% 1 2.63%
uwe kleine-koenig uwe kleine-koenig 4 0.04% 1 2.63%
tejun heo tejun heo 3 0.03% 1 2.63%
paul mundt paul mundt 3 0.03% 1 2.63%
kuninori morimoto kuninori morimoto 2 0.02% 1 2.63%
michal nazarewicz michal nazarewicz 2 0.02% 1 2.63%
michal sojka michal sojka 1 0.01% 1 2.63%
yusuke goda yusuke goda 1 0.01% 1 2.63%
joe perches joe perches 1 0.01% 1 2.63%
dan carpenter dan carpenter 1 0.01% 1 2.63%
al viro al viro 1 0.01% 1 2.63%
klaus schwarzkopf klaus schwarzkopf 1 0.01% 1 2.63%
fabio porcedda fabio porcedda 1 0.01% 1 2.63%
Total 8955 100.00% 38 100.00%
  Directory: drivers/usb/gadget/udc

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
	Person	Tokens	Prop	Commits	CommitProp
yoshihiro shimoda	yoshihiro shimoda	24	100.00%	1	100.00%
	Total	24	100.00%	1	100.00%
cregit-Linux how code gets into the kernel

Release 4.7 drivers/usb/gadget/udc/m66592-udc.c

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