Release 4.11 drivers/input/misc/yealink.c
/*
* drivers/usb/input/yealink.c
*
* Copyright (c) 2005 Henk Vergonet <Henk.Vergonet@gmail.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; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* Description:
* Driver for the USB-P1K voip usb phone.
* This device is produced by Yealink Network Technology Co Ltd
* but may be branded under several names:
* - Yealink usb-p1k
* - Tiptel 115
* - ...
*
* This driver is based on:
* - the usbb2k-api http://savannah.nongnu.org/projects/usbb2k-api/
* - information from http://memeteau.free.fr/usbb2k
* - the xpad-driver drivers/input/joystick/xpad.c
*
* Thanks to:
* - Olivier Vandorpe, for providing the usbb2k-api.
* - Martin Diehl, for spotting my memory allocation bug.
*
* History:
* 20050527 henk First version, functional keyboard. Keyboard events
* will pop-up on the ../input/eventX bus.
* 20050531 henk Added led, LCD, dialtone and sysfs interface.
* 20050610 henk Cleanups, make it ready for public consumption.
* 20050630 henk Cleanups, fixes in response to comments.
* 20050701 henk sysfs write serialisation, fix potential unload races
* 20050801 henk Added ringtone, restructure USB
* 20050816 henk Merge 2.6.13-rc6
*/
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/rwsem.h>
#include <linux/usb/input.h>
#include <linux/map_to_7segment.h>
#include "yealink.h"
#define DRIVER_VERSION "yld-20051230"
#define DRIVER_AUTHOR "Henk Vergonet"
#define DRIVER_DESC "Yealink phone driver"
#define YEALINK_POLLING_FREQUENCY 10
/* in [Hz] */
struct yld_status {
u8 lcd[24];
u8 led;
u8 dialtone;
u8 ringtone;
u8 keynum;
} __attribute__ ((packed));
/*
* Register the LCD segment and icon map
*/
#define _LOC(k,l) { .a = (k), .m = (l) }
#define _SEG(t, a, am, b, bm, c, cm, d, dm, e, em, f, fm, g, gm) \
{ .type = (t), \
.u = { .s = { _LOC(a, am), _LOC(b, bm), _LOC(c, cm), \
_LOC(d, dm), _LOC(e, em), _LOC(g, gm), \
_LOC(f, fm) } } }
#define _PIC(t, h, hm, n) \
{ .type = (t), \
.u = { .p = { .name = (n), .a = (h), .m = (hm) } } }
static const struct lcd_segment_map {
char type;
union {
struct pictogram_map {
u8 a,m;
char name[10];
}
p;
struct segment_map {
u8 a,m;
}
s[7];
}
u;
}
lcdMap[] = {
#include "yealink.h"
};
struct yealink_dev {
struct input_dev *idev; /* input device */
struct usb_device *udev; /* usb device */
struct usb_interface *intf; /* usb interface */
/* irq input channel */
struct yld_ctl_packet *irq_data;
dma_addr_t irq_dma;
struct urb *urb_irq;
/* control output channel */
struct yld_ctl_packet *ctl_data;
dma_addr_t ctl_dma;
struct usb_ctrlrequest *ctl_req;
struct urb *urb_ctl;
char phys[64]; /* physical device path */
u8 lcdMap[ARRAY_SIZE(lcdMap)]; /* state of LCD, LED ... */
int key_code; /* last reported key */
unsigned int shutdown:1;
int stat_ix;
union {
struct yld_status s;
u8 b[sizeof(struct yld_status)];
}
master, copy;
};
/*******************************************************************************
* Yealink lcd interface
******************************************************************************/
/*
* Register a default 7 segment character set
*/
static SEG7_DEFAULT_MAP(map_seg7);
/* Display a char,
* char '\9' and '\n' are placeholders and do not overwrite the original text.
* A space will always hide an icon.
*/
static int setChar(struct yealink_dev *yld, int el, int chr)
{
int i, a, m, val;
if (el >= ARRAY_SIZE(lcdMap))
return -EINVAL;
if (chr == '\t' || chr == '\n')
return 0;
yld->lcdMap[el] = chr;
if (lcdMap[el].type == '.') {
a = lcdMap[el].u.p.a;
m = lcdMap[el].u.p.m;
if (chr != ' ')
yld->master.b[a] |= m;
else
yld->master.b[a] &= ~m;
return 0;
}
val = map_to_seg7(&map_seg7, chr);
for (i = 0; i < ARRAY_SIZE(lcdMap[0].u.s); i++) {
m = lcdMap[el].u.s[i].m;
if (m == 0)
continue;
a = lcdMap[el].u.s[i].a;
if (val & 1)
yld->master.b[a] |= m;
else
yld->master.b[a] &= ~m;
val = val >> 1;
}
return 0;
}Contributors
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;
/*******************************************************************************
* Yealink key interface
******************************************************************************/
/* Map device buttons to internal key events.
*
* USB-P1K button layout:
*
* up
* IN OUT
* down
*
* pickup C hangup
* 1 2 3
* 4 5 6
* 7 8 9
* * 0 #
*
* The "up" and "down" keys, are symbolised by arrows on the button.
* The "pickup" and "hangup" keys are symbolised by a green and red phone
* on the button.
*/
static int map_p1k_to_key(int scancode)
{
switch(scancode) { /* phone key: */
case 0x23: return KEY_LEFT; /* IN */
case 0x33: return KEY_UP; /* up */
case 0x04: return KEY_RIGHT; /* OUT */
case 0x24: return KEY_DOWN; /* down */
case 0x03: return KEY_ENTER; /* pickup */
case 0x14: return KEY_BACKSPACE; /* C */
case 0x13: return KEY_ESC; /* hangup */
case 0x00: return KEY_1; /* 1 */
case 0x01: return KEY_2; /* 2 */
case 0x02: return KEY_3; /* 3 */
case 0x10: return KEY_4; /* 4 */
case 0x11: return KEY_5; /* 5 */
case 0x12: return KEY_6; /* 6 */
case 0x20: return KEY_7; /* 7 */
case 0x21: return KEY_8; /* 8 */
case 0x22: return KEY_9; /* 9 */
case 0x30: return KEY_KPASTERISK; /* * */
case 0x31: return KEY_0; /* 0 */
case 0x32: return KEY_LEFTSHIFT |
KEY_3 << 8; /* # */
}
return -EINVAL;
}
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/* Completes a request by converting the data into events for the
* input subsystem.
*
* The key parameter can be cascaded: key2 << 8 | key1
*/
static void report_key(struct yealink_dev *yld, int key)
{
struct input_dev *idev = yld->idev;
if (yld->key_code >= 0) {
/* old key up */
input_report_key(idev, yld->key_code & 0xff, 0);
if (yld->key_code >> 8)
input_report_key(idev, yld->key_code >> 8, 0);
}
yld->key_code = key;
if (key >= 0) {
/* new valid key */
input_report_key(idev, key & 0xff, 1);
if (key >> 8)
input_report_key(idev, key >> 8, 1);
}
input_sync(idev);
}
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/*******************************************************************************
* Yealink usb communication interface
******************************************************************************/
static int yealink_cmd(struct yealink_dev *yld, struct yld_ctl_packet *p)
{
u8 *buf = (u8 *)p;
int i;
u8 sum = 0;
for(i=0; i<USB_PKT_LEN-1; i++)
sum -= buf[i];
p->sum = sum;
return usb_control_msg(yld->udev,
usb_sndctrlpipe(yld->udev, 0),
USB_REQ_SET_CONFIGURATION,
USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT,
0x200, 3,
p, sizeof(*p),
USB_CTRL_SET_TIMEOUT);
}
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static u8 default_ringtone[] = {
0xEF, /* volume [0-255] */
0xFB, 0x1E, 0x00, 0x0C, /* 1250 [hz], 12/100 [s] */
0xFC, 0x18, 0x00, 0x0C, /* 1000 [hz], 12/100 [s] */
0xFB, 0x1E, 0x00, 0x0C,
0xFC, 0x18, 0x00, 0x0C,
0xFB, 0x1E, 0x00, 0x0C,
0xFC, 0x18, 0x00, 0x0C,
0xFB, 0x1E, 0x00, 0x0C,
0xFC, 0x18, 0x00, 0x0C,
0xFF, 0xFF, 0x01, 0x90, /* silent, 400/100 [s] */
0x00, 0x00 /* end of sequence */
};
static int yealink_set_ringtone(struct yealink_dev *yld, u8 *buf, size_t size)
{
struct yld_ctl_packet *p = yld->ctl_data;
int ix, len;
if (size <= 0)
return -EINVAL;
/* Set the ringtone volume */
memset(yld->ctl_data, 0, sizeof(*(yld->ctl_data)));
yld->ctl_data->cmd = CMD_RING_VOLUME;
yld->ctl_data->size = 1;
yld->ctl_data->data[0] = buf[0];
yealink_cmd(yld, p);
buf++;
size--;
p->cmd = CMD_RING_NOTE;
ix = 0;
while (size != ix) {
len = size - ix;
if (len > sizeof(p->data))
len = sizeof(p->data);
p->size = len;
p->offset = cpu_to_be16(ix);
memcpy(p->data, &buf[ix], len);
yealink_cmd(yld, p);
ix += len;
}
return 0;
}
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/* keep stat_master & stat_copy in sync.
*/
static int yealink_do_idle_tasks(struct yealink_dev *yld)
{
u8 val;
int i, ix, len;
ix = yld->stat_ix;
memset(yld->ctl_data, 0, sizeof(*(yld->ctl_data)));
yld->ctl_data->cmd = CMD_KEYPRESS;
yld->ctl_data->size = 1;
yld->ctl_data->sum = 0xff - CMD_KEYPRESS;
/* If state update pointer wraps do a KEYPRESS first. */
if (ix >= sizeof(yld->master)) {
yld->stat_ix = 0;
return 0;
}
/* find update candidates: copy != master */
do {
val = yld->master.b[ix];
if (val != yld->copy.b[ix])
goto send_update;
} while (++ix < sizeof(yld->master));
/* nothing todo, wait a bit and poll for a KEYPRESS */
yld->stat_ix = 0;
/* TODO how can we wait abit. ??
* msleep_interruptible(1000 / YEALINK_POLLING_FREQUENCY);
*/
return 0;
send_update:
/* Setup an appropriate update request */
yld->copy.b[ix] = val;
yld->ctl_data->data[0] = val;
switch(ix) {
case offsetof(struct yld_status, led):
yld->ctl_data->cmd = CMD_LED;
yld->ctl_data->sum = -1 - CMD_LED - val;
break;
case offsetof(struct yld_status, dialtone):
yld->ctl_data->cmd = CMD_DIALTONE;
yld->ctl_data->sum = -1 - CMD_DIALTONE - val;
break;
case offsetof(struct yld_status, ringtone):
yld->ctl_data->cmd = CMD_RINGTONE;
yld->ctl_data->sum = -1 - CMD_RINGTONE - val;
break;
case offsetof(struct yld_status, keynum):
val--;
val &= 0x1f;
yld->ctl_data->cmd = CMD_SCANCODE;
yld->ctl_data->offset = cpu_to_be16(val);
yld->ctl_data->data[0] = 0;
yld->ctl_data->sum = -1 - CMD_SCANCODE - val;
break;
default:
len = sizeof(yld->master.s.lcd) - ix;
if (len > sizeof(yld->ctl_data->data))
len = sizeof(yld->ctl_data->data);
/* Combine up to <len> consecutive LCD bytes in a singe request
*/
yld->ctl_data->cmd = CMD_LCD;
yld->ctl_data->offset = cpu_to_be16(ix);
yld->ctl_data->size = len;
yld->ctl_data->sum = -CMD_LCD - ix - val - len;
for(i=1; i<len; i++) {
ix++;
val = yld->master.b[ix];
yld->copy.b[ix] = val;
yld->ctl_data->data[i] = val;
yld->ctl_data->sum -= val;
}
}
yld->stat_ix = ix + 1;
return 1;
}
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Total | 487 | 100.00% | 2 | 100.00% |
/* Decide on how to handle responses
*
* The state transition diagram is somethhing like:
*
* syncState<--+
* | |
* | idle
* \|/ |
* init --ok--> waitForKey --ok--> getKey
* ^ ^ |
* | +-------ok-------+
* error,start
*
*/
static void urb_irq_callback(struct urb *urb)
{
struct yealink_dev *yld = urb->context;
int ret, status = urb->status;
if (status)
dev_err(&yld->intf->dev, "%s - urb status %d\n",
__func__, status);
switch (yld->irq_data->cmd) {
case CMD_KEYPRESS:
yld->master.s.keynum = yld->irq_data->data[0];
break;
case CMD_SCANCODE:
dev_dbg(&yld->intf->dev, "get scancode %x\n",
yld->irq_data->data[0]);
report_key(yld, map_p1k_to_key(yld->irq_data->data[0]));
break;
default:
dev_err(&yld->intf->dev, "unexpected response %x\n",
yld->irq_data->cmd);
}
yealink_do_idle_tasks(yld);
if (!yld->shutdown) {
ret = usb_submit_urb(yld->urb_ctl, GFP_ATOMIC);
if (ret && ret != -EPERM)
dev_err(&yld->intf->dev,
"%s - usb_submit_urb failed %d\n",
__func__, ret);
}
}
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Person | Tokens | Prop | Commits | CommitProp |
Henk Vergonet | 133 | 69.63% | 1 | 16.67% |
Greg Kroah-Hartman | 36 | 18.85% | 3 | 50.00% |
Oliver Neukum | 20 | 10.47% | 1 | 16.67% |
Harvey Harrison | 2 | 1.05% | 1 | 16.67% |
Total | 191 | 100.00% | 6 | 100.00% |
static void urb_ctl_callback(struct urb *urb)
{
struct yealink_dev *yld = urb->context;
int ret = 0, status = urb->status;
if (status)
dev_err(&yld->intf->dev, "%s - urb status %d\n",
__func__, status);
switch (yld->ctl_data->cmd) {
case CMD_KEYPRESS:
case CMD_SCANCODE:
/* ask for a response */
if (!yld->shutdown)
ret = usb_submit_urb(yld->urb_irq, GFP_ATOMIC);
break;
default:
/* send new command */
yealink_do_idle_tasks(yld);
if (!yld->shutdown)
ret = usb_submit_urb(yld->urb_ctl, GFP_ATOMIC);
break;
}
if (ret && ret != -EPERM)
dev_err(&yld->intf->dev, "%s - usb_submit_urb failed %d\n",
__func__, ret);
}
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Henk Vergonet | 90 | 65.22% | 1 | 20.00% |
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Harvey Harrison | 2 | 1.45% | 1 | 20.00% |
Total | 138 | 100.00% | 5 | 100.00% |
/*******************************************************************************
* input event interface
******************************************************************************/
/* TODO should we issue a ringtone on a SND_BELL event?
static int input_ev(struct input_dev *dev, unsigned int type,
unsigned int code, int value)
{
if (type != EV_SND)
return -EINVAL;
switch (code) {
case SND_BELL:
case SND_TONE:
break;
default:
return -EINVAL;
}
return 0;
}
*/
static int input_open(struct input_dev *dev)
{
struct yealink_dev *yld = input_get_drvdata(dev);
int i, ret;
dev_dbg(&yld->intf->dev, "%s\n", __func__);
/* force updates to device */
for (i = 0; i<sizeof(yld->master); i++)
yld->copy.b[i] = ~yld->master.b[i];
yld->key_code = -1; /* no keys pressed */
yealink_set_ringtone(yld, default_ringtone, sizeof(default_ringtone));
/* issue INIT */
memset(yld->ctl_data, 0, sizeof(*(yld->ctl_data)));
yld->ctl_data->cmd = CMD_INIT;
yld->ctl_data->size = 10;
yld->ctl_data->sum = 0x100-CMD_INIT-10;
if ((ret = usb_submit_urb(yld->urb_ctl, GFP_KERNEL)) != 0) {
dev_dbg(&yld->intf->dev,
"%s - usb_submit_urb failed with result %d\n",
__func__, ret);
return ret;
}
return 0;
}
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Henk Vergonet | 164 | 87.70% | 1 | 20.00% |
Greg Kroah-Hartman | 18 | 9.63% | 2 | 40.00% |
Dmitry Torokhov | 3 | 1.60% | 1 | 20.00% |
Harvey Harrison | 2 | 1.07% | 1 | 20.00% |
Total | 187 | 100.00% | 5 | 100.00% |
static void input_close(struct input_dev *dev)
{
struct yealink_dev *yld = input_get_drvdata(dev);
yld->shutdown = 1;
/*
* Make sure the flag is seen by other CPUs before we start
* killing URBs so new URBs won't be submitted
*/
smp_wmb();
usb_kill_urb(yld->urb_ctl);
usb_kill_urb(yld->urb_irq);
yld->shutdown = 0;
smp_wmb();
}
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Henk Vergonet | 32 | 59.26% | 1 | 33.33% |
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Total | 54 | 100.00% | 3 | 100.00% |
/*******************************************************************************
* sysfs interface
******************************************************************************/
static DECLARE_RWSEM(sysfs_rwsema);
/* Interface to the 7-segments translation table aka. char set.
*/
static ssize_t show_map(struct device *dev, struct device_attribute *attr,
char *buf)
{
memcpy(buf, &map_seg7, sizeof(map_seg7));
return sizeof(map_seg7);
}
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static ssize_t store_map(struct device *dev, struct device_attribute *attr,
const char *buf, size_t cnt)
{
if (cnt != sizeof(map_seg7))
return -EINVAL;
memcpy(&map_seg7, buf, sizeof(map_seg7));
return sizeof(map_seg7);
}
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/* Interface to the LCD.
*/
/* Reading /sys/../lineX will return the format string with its settings:
*
* Example:
* cat ./line3
* 888888888888
* Linux Rocks!
*/
static ssize_t show_line(struct device *dev, char *buf, int a, int b)
{
struct yealink_dev *yld;
int i;
down_read(&sysfs_rwsema);
yld = dev_get_drvdata(dev);
if (yld == NULL) {
up_read(&sysfs_rwsema);
return -ENODEV;
}
for (i = a; i < b; i++)
*buf++ = lcdMap[i].type;
*buf++ = '\n';
for (i = a; i < b; i++)
*buf++ = yld->lcdMap[i];
*buf++ = '\n';
*buf = 0;
up_read(&sysfs_rwsema);
return 3 + ((b - a) << 1);
}
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static ssize_t show_line1(struct device *dev, struct device_attribute *attr,
char *buf)
{
return show_line(dev, buf, LCD_LINE1_OFFSET, LCD_LINE2_OFFSET);
}
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static ssize_t show_line2(struct device *dev, struct device_attribute *attr,
char *buf)
{
return show_line(dev, buf, LCD_LINE2_OFFSET, LCD_LINE3_OFFSET);
}
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static ssize_t show_line3(struct device *dev, struct device_attribute *attr,
char *buf)
{
return show_line(dev, buf, LCD_LINE3_OFFSET, LCD_LINE4_OFFSET);
}
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/* Writing to /sys/../lineX will set the coresponding LCD line.
* - Excess characters are ignored.
* - If less characters are written than allowed, the remaining digits are
* unchanged.
* - The '\n' or '\t' char is a placeholder, it does not overwrite the
* original content.
*/
static ssize_t store_line(struct device *dev, const char *buf, size_t count,
int el, size_t len)
{
struct yealink_dev *yld;
int i;
down_write(&sysfs_rwsema);
yld = dev_get_drvdata(dev);
if (yld == NULL) {
up_write(&sysfs_rwsema);
return -ENODEV;
}
if (len > count)
len = count;
for (i = 0; i < len; i++)
setChar(yld, el++, buf[i]);
up_write(&sysfs_rwsema);
return count;
}
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static ssize_t store_line1(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
return store_line(dev, buf, count, LCD_LINE1_OFFSET, LCD_LINE1_SIZE);
}
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static ssize_t store_line2(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
return store_line(dev, buf, count, LCD_LINE2_OFFSET, LCD_LINE2_SIZE);
}
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static ssize_t store_line3(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
return store_line(dev, buf, count, LCD_LINE3_OFFSET, LCD_LINE3_SIZE);
}
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/* Interface to visible and audible "icons", these include:
* pictures on the LCD, the LED, and the dialtone signal.
*/
/* Get a list of "switchable elements" with their current state. */
static ssize_t get_icons(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct yealink_dev *yld;
int i, ret = 1;
down_read(&sysfs_rwsema);
yld = dev_get_drvdata(dev);
if (yld == NULL) {
up_read(&sysfs_rwsema);
return -ENODEV;
}
for (i = 0; i < ARRAY_SIZE(lcdMap); i++) {
if (lcdMap[i].type != '.')
continue;
ret += sprintf(&buf[ret], "%s %s\n",
yld->lcdMap[i] == ' ' ? " " : "on",
lcdMap[i].u.p.name);
}
up_read(&sysfs_rwsema);
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Henk Vergonet | 139 | 100.00% | 1 | 100.00% |
Total | 139 | 100.00% | 1 | 100.00% |
/* Change the visibility of a particular element. */
static ssize_t set_icon(struct device *dev, const char *buf, size_t count,
int chr)
{
struct yealink_dev *yld;
int i;
down_write(&sysfs_rwsema);
yld = dev_get_drvdata(dev);
if (yld == NULL) {
up_write(&sysfs_rwsema);
return