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linux-sg2042/drivers/media/rc/ati_remote.c

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/*
* USB ATI Remote support
*
* Copyright (c) 2011, 2012 Anssi Hannula <anssi.hannula@iki.fi>
* Version 2.2.0 Copyright (c) 2004 Torrey Hoffman <thoffman@arnor.net>
* Version 2.1.1 Copyright (c) 2002 Vladimir Dergachev
*
* This 2.2.0 version is a rewrite / cleanup of the 2.1.1 driver, including
* porting to the 2.6 kernel interfaces, along with other modification
* to better match the style of the existing usb/input drivers. However, the
* protocol and hardware handling is essentially unchanged from 2.1.1.
*
* The 2.1.1 driver was derived from the usbati_remote and usbkbd drivers by
* Vojtech Pavlik.
*
* Changes:
*
* Feb 2004: Torrey Hoffman <thoffman@arnor.net>
* Version 2.2.0
* Jun 2004: Torrey Hoffman <thoffman@arnor.net>
* Version 2.2.1
* Added key repeat support contributed by:
* Vincent Vanackere <vanackere@lif.univ-mrs.fr>
* Added support for the "Lola" remote contributed by:
* Seth Cohn <sethcohn@yahoo.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
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
* Hardware & software notes
*
* These remote controls are distributed by ATI as part of their
* "All-In-Wonder" video card packages. The receiver self-identifies as a
* "USB Receiver" with manufacturer "X10 Wireless Technology Inc".
*
* The "Lola" remote is available from X10. See:
* http://www.x10.com/products/lola_sg1.htm
* The Lola is similar to the ATI remote but has no mouse support, and slightly
* different keys.
*
* It is possible to use multiple receivers and remotes on multiple computers
* simultaneously by configuring them to use specific channels.
*
* The RF protocol used by the remote supports 16 distinct channels, 1 to 16.
* Actually, it may even support more, at least in some revisions of the
* hardware.
*
* Each remote can be configured to transmit on one channel as follows:
* - Press and hold the "hand icon" button.
* - When the red LED starts to blink, let go of the "hand icon" button.
* - When it stops blinking, input the channel code as two digits, from 01
* to 16, and press the hand icon again.
*
* The timing can be a little tricky. Try loading the module with debug=1
* to have the kernel print out messages about the remote control number
* and mask. Note: debugging prints remote numbers as zero-based hexadecimal.
*
* The driver has a "channel_mask" parameter. This bitmask specifies which
* channels will be ignored by the module. To mask out channels, just add
* all the 2^channel_number values together.
*
* For instance, set channel_mask = 2^4 = 16 (binary 10000) to make ati_remote
* ignore signals coming from remote controls transmitting on channel 4, but
* accept all other channels.
*
* Or, set channel_mask = 65533, (0xFFFD), and all channels except 1 will be
* ignored.
*
* The default is 0 (respond to all channels). Bit 0 and bits 17-32 of this
* parameter are unused.
*
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/usb/input.h>
#include <linux/wait.h>
#include <linux/jiffies.h>
#include <media/rc-core.h>
/*
* Module and Version Information, Module Parameters
*/
#define ATI_REMOTE_VENDOR_ID 0x0bc7
#define LOLA_REMOTE_PRODUCT_ID 0x0002
#define LOLA2_REMOTE_PRODUCT_ID 0x0003
#define ATI_REMOTE_PRODUCT_ID 0x0004
#define NVIDIA_REMOTE_PRODUCT_ID 0x0005
#define MEDION_REMOTE_PRODUCT_ID 0x0006
#define FIREFLY_REMOTE_PRODUCT_ID 0x0008
#define DRIVER_VERSION "2.2.1"
#define DRIVER_AUTHOR "Torrey Hoffman <thoffman@arnor.net>"
#define DRIVER_DESC "ATI/X10 RF USB Remote Control"
#define NAME_BUFSIZE 80 /* size of product name, path buffers */
#define DATA_BUFSIZE 63 /* size of URB data buffers */
/*
* Duplicate event filtering time.
* Sequential, identical KIND_FILTERED inputs with less than
* FILTER_TIME milliseconds between them are considered as repeat
* events. The hardware generates 5 events for the first keypress
* and we have to take this into account for an accurate repeat
* behaviour.
*/
#define FILTER_TIME 60 /* msec */
#define REPEAT_DELAY 500 /* msec */
static unsigned long channel_mask;
module_param(channel_mask, ulong, 0644);
MODULE_PARM_DESC(channel_mask, "Bitmask of remote control channels to ignore");
static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Enable extra debug messages and information");
static int repeat_filter = FILTER_TIME;
module_param(repeat_filter, int, 0644);
MODULE_PARM_DESC(repeat_filter, "Repeat filter time, default = 60 msec");
static int repeat_delay = REPEAT_DELAY;
module_param(repeat_delay, int, 0644);
MODULE_PARM_DESC(repeat_delay, "Delay before sending repeats, default = 500 msec");
static bool mouse = true;
module_param(mouse, bool, 0444);
MODULE_PARM_DESC(mouse, "Enable mouse device, default = yes");
#define dbginfo(dev, format, arg...) \
do { if (debug) dev_info(dev , format , ## arg); } while (0)
#undef err
#define err(format, arg...) printk(KERN_ERR format , ## arg)
struct ati_receiver_type {
/* either default_keymap or get_default_keymap should be set */
const char *default_keymap;
const char *(*get_default_keymap)(struct usb_interface *interface);
};
static const char *get_medion_keymap(struct usb_interface *interface)
{
struct usb_device *udev = interface_to_usbdev(interface);
/*
* There are many different Medion remotes shipped with a receiver
* with the same usb id, but the receivers have subtle differences
* in the USB descriptors allowing us to detect them.
*/
if (udev->manufacturer && udev->product) {
if (udev->actconfig->desc.bmAttributes & USB_CONFIG_ATT_WAKEUP) {
if (!strcmp(udev->manufacturer, "X10 Wireless Technology Inc")
&& !strcmp(udev->product, "USB Receiver"))
return RC_MAP_MEDION_X10_DIGITAINER;
if (!strcmp(udev->manufacturer, "X10 WTI")
&& !strcmp(udev->product, "RF receiver"))
return RC_MAP_MEDION_X10_OR2X;
} else {
if (!strcmp(udev->manufacturer, "X10 Wireless Technology Inc")
&& !strcmp(udev->product, "USB Receiver"))
return RC_MAP_MEDION_X10;
}
}
dev_info(&interface->dev,
"Unknown Medion X10 receiver, using default ati_remote Medion keymap\n");
return RC_MAP_MEDION_X10;
}
static const struct ati_receiver_type type_ati = {
.default_keymap = RC_MAP_ATI_X10
};
static const struct ati_receiver_type type_medion = {
.get_default_keymap = get_medion_keymap
};
static const struct ati_receiver_type type_firefly = {
.default_keymap = RC_MAP_SNAPSTREAM_FIREFLY
};
static struct usb_device_id ati_remote_table[] = {
{
USB_DEVICE(ATI_REMOTE_VENDOR_ID, LOLA_REMOTE_PRODUCT_ID),
.driver_info = (unsigned long)&type_ati
},
{
USB_DEVICE(ATI_REMOTE_VENDOR_ID, LOLA2_REMOTE_PRODUCT_ID),
.driver_info = (unsigned long)&type_ati
},
{
USB_DEVICE(ATI_REMOTE_VENDOR_ID, ATI_REMOTE_PRODUCT_ID),
.driver_info = (unsigned long)&type_ati
},
{
USB_DEVICE(ATI_REMOTE_VENDOR_ID, NVIDIA_REMOTE_PRODUCT_ID),
.driver_info = (unsigned long)&type_ati
},
{
USB_DEVICE(ATI_REMOTE_VENDOR_ID, MEDION_REMOTE_PRODUCT_ID),
.driver_info = (unsigned long)&type_medion
},
{
USB_DEVICE(ATI_REMOTE_VENDOR_ID, FIREFLY_REMOTE_PRODUCT_ID),
.driver_info = (unsigned long)&type_firefly
},
{} /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, ati_remote_table);
/* Get hi and low bytes of a 16-bits int */
#define HI(a) ((unsigned char)((a) >> 8))
#define LO(a) ((unsigned char)((a) & 0xff))
#define SEND_FLAG_IN_PROGRESS 1
#define SEND_FLAG_COMPLETE 2
/* Device initialization strings */
static char init1[] = { 0x01, 0x00, 0x20, 0x14 };
static char init2[] = { 0x01, 0x00, 0x20, 0x14, 0x20, 0x20, 0x20 };
struct ati_remote {
struct input_dev *idev;
struct rc_dev *rdev;
struct usb_device *udev;
struct usb_interface *interface;
struct urb *irq_urb;
struct urb *out_urb;
struct usb_endpoint_descriptor *endpoint_in;
struct usb_endpoint_descriptor *endpoint_out;
unsigned char *inbuf;
unsigned char *outbuf;
dma_addr_t inbuf_dma;
dma_addr_t outbuf_dma;
unsigned char old_data; /* Detect duplicate events */
unsigned long old_jiffies;
unsigned long acc_jiffies; /* handle acceleration */
unsigned long first_jiffies;
unsigned int repeat_count;
char rc_name[NAME_BUFSIZE];
char rc_phys[NAME_BUFSIZE];
char mouse_name[NAME_BUFSIZE];
char mouse_phys[NAME_BUFSIZE];
wait_queue_head_t wait;
int send_flags;
int users; /* 0-2, users are rc and input */
struct mutex open_mutex;
};
/* "Kinds" of messages sent from the hardware to the driver. */
#define KIND_END 0
#define KIND_LITERAL 1 /* Simply pass to input system */
#define KIND_FILTERED 2 /* Add artificial key-up events, drop keyrepeats */
#define KIND_LU 3 /* Directional keypad diagonals - left up, */
#define KIND_RU 4 /* right up, */
#define KIND_LD 5 /* left down, */
#define KIND_RD 6 /* right down */
#define KIND_ACCEL 7 /* Directional keypad - left, right, up, down.*/
/* Translation table from hardware messages to input events. */
static const struct {
short kind;
unsigned char data;
int type;
unsigned int code;
int value;
} ati_remote_tbl[] = {
/* Directional control pad axes */
{KIND_ACCEL, 0x70, EV_REL, REL_X, -1}, /* left */
{KIND_ACCEL, 0x71, EV_REL, REL_X, 1}, /* right */
{KIND_ACCEL, 0x72, EV_REL, REL_Y, -1}, /* up */
{KIND_ACCEL, 0x73, EV_REL, REL_Y, 1}, /* down */
/* Directional control pad diagonals */
{KIND_LU, 0x74, EV_REL, 0, 0}, /* left up */
{KIND_RU, 0x75, EV_REL, 0, 0}, /* right up */
{KIND_LD, 0x77, EV_REL, 0, 0}, /* left down */
{KIND_RD, 0x76, EV_REL, 0, 0}, /* right down */
/* "Mouse button" buttons */
{KIND_LITERAL, 0x78, EV_KEY, BTN_LEFT, 1}, /* left btn down */
{KIND_LITERAL, 0x79, EV_KEY, BTN_LEFT, 0}, /* left btn up */
{KIND_LITERAL, 0x7c, EV_KEY, BTN_RIGHT, 1},/* right btn down */
{KIND_LITERAL, 0x7d, EV_KEY, BTN_RIGHT, 0},/* right btn up */
/* Artificial "doubleclick" events are generated by the hardware.
* They are mapped to the "side" and "extra" mouse buttons here. */
{KIND_FILTERED, 0x7a, EV_KEY, BTN_SIDE, 1}, /* left dblclick */
{KIND_FILTERED, 0x7e, EV_KEY, BTN_EXTRA, 1},/* right dblclick */
/* Non-mouse events are handled by rc-core */
{KIND_END, 0x00, EV_MAX + 1, 0, 0}
};
/*
* ati_remote_dump_input
*/
static void ati_remote_dump(struct device *dev, unsigned char *data,
unsigned int len)
{
if (len == 1) {
if (data[0] != (unsigned char)0xff && data[0] != 0x00)
dev_warn(dev, "Weird byte 0x%02x\n", data[0]);
} else if (len == 4)
dev_warn(dev, "Weird key %*ph\n", 4, data);
else
dev_warn(dev, "Weird data, len=%d %*ph ...\n", len, 6, data);
}
/*
* ati_remote_open
*/
static int ati_remote_open(struct ati_remote *ati_remote)
{
int err = 0;
mutex_lock(&ati_remote->open_mutex);
if (ati_remote->users++ != 0)
goto out; /* one was already active */
/* On first open, submit the read urb which was set up previously. */
ati_remote->irq_urb->dev = ati_remote->udev;
if (usb_submit_urb(ati_remote->irq_urb, GFP_KERNEL)) {
dev_err(&ati_remote->interface->dev,
"%s: usb_submit_urb failed!\n", __func__);
err = -EIO;
}
out: mutex_unlock(&ati_remote->open_mutex);
return err;
}
/*
* ati_remote_close
*/
static void ati_remote_close(struct ati_remote *ati_remote)
{
mutex_lock(&ati_remote->open_mutex);
if (--ati_remote->users == 0)
usb_kill_urb(ati_remote->irq_urb);
mutex_unlock(&ati_remote->open_mutex);
}
static int ati_remote_input_open(struct input_dev *inputdev)
{
struct ati_remote *ati_remote = input_get_drvdata(inputdev);
return ati_remote_open(ati_remote);
}
static void ati_remote_input_close(struct input_dev *inputdev)
{
struct ati_remote *ati_remote = input_get_drvdata(inputdev);
ati_remote_close(ati_remote);
}
static int ati_remote_rc_open(struct rc_dev *rdev)
{
struct ati_remote *ati_remote = rdev->priv;
return ati_remote_open(ati_remote);
}
static void ati_remote_rc_close(struct rc_dev *rdev)
{
struct ati_remote *ati_remote = rdev->priv;
ati_remote_close(ati_remote);
}
/*
* ati_remote_irq_out
*/
static void ati_remote_irq_out(struct urb *urb)
{
struct ati_remote *ati_remote = urb->context;
if (urb->status) {
dev_dbg(&ati_remote->interface->dev, "%s: status %d\n",
__func__, urb->status);
return;
}
ati_remote->send_flags |= SEND_FLAG_COMPLETE;
wmb();
wake_up(&ati_remote->wait);
}
/*
* ati_remote_sendpacket
*
* Used to send device initialization strings
*/
static int ati_remote_sendpacket(struct ati_remote *ati_remote, u16 cmd,
unsigned char *data)
{
int retval = 0;
/* Set up out_urb */
memcpy(ati_remote->out_urb->transfer_buffer + 1, data, LO(cmd));
((char *) ati_remote->out_urb->transfer_buffer)[0] = HI(cmd);
ati_remote->out_urb->transfer_buffer_length = LO(cmd) + 1;
ati_remote->out_urb->dev = ati_remote->udev;
ati_remote->send_flags = SEND_FLAG_IN_PROGRESS;
retval = usb_submit_urb(ati_remote->out_urb, GFP_ATOMIC);
if (retval) {
dev_dbg(&ati_remote->interface->dev,
"sendpacket: usb_submit_urb failed: %d\n", retval);
return retval;
}
wait_event_timeout(ati_remote->wait,
((ati_remote->out_urb->status != -EINPROGRESS) ||
(ati_remote->send_flags & SEND_FLAG_COMPLETE)),
HZ);
usb_kill_urb(ati_remote->out_urb);
return retval;
}
/*
* ati_remote_compute_accel
*
* Implements acceleration curve for directional control pad
* If elapsed time since last event is > 1/4 second, user "stopped",
* so reset acceleration. Otherwise, user is probably holding the control
* pad down, so we increase acceleration, ramping up over two seconds to
* a maximum speed.
*/
static int ati_remote_compute_accel(struct ati_remote *ati_remote)
{
static const char accel[] = { 1, 2, 4, 6, 9, 13, 20 };
unsigned long now = jiffies;
int acc;
if (time_after(now, ati_remote->old_jiffies + msecs_to_jiffies(250))) {
acc = 1;
ati_remote->acc_jiffies = now;
}
else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(125)))
acc = accel[0];
else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(250)))
acc = accel[1];
else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(500)))
acc = accel[2];
else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(1000)))
acc = accel[3];
else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(1500)))
acc = accel[4];
else if (time_before(now, ati_remote->acc_jiffies + msecs_to_jiffies(2000)))
acc = accel[5];
else
acc = accel[6];
return acc;
}
/*
* ati_remote_report_input
*/
static void ati_remote_input_report(struct urb *urb)
{
struct ati_remote *ati_remote = urb->context;
unsigned char *data= ati_remote->inbuf;
struct input_dev *dev = ati_remote->idev;
int index = -1;
int acc;
int remote_num;
unsigned char scancode;
u32 wheel_keycode = KEY_RESERVED;
int i;
/*
* data[0] = 0x14
* data[1] = data[2] + data[3] + 0xd5 (a checksum byte)
* data[2] = the key code (with toggle bit in MSB with some models)
* data[3] = channel << 4 (the low 4 bits must be zero)
*/
/* Deal with strange looking inputs */
if ( (urb->actual_length != 4) || (data[0] != 0x14) ||
((data[3] & 0x0f) != 0x00) ) {
ati_remote_dump(&urb->dev->dev, data, urb->actual_length);
return;
}
if (data[1] != ((data[2] + data[3] + 0xd5) & 0xff)) {
dbginfo(&ati_remote->interface->dev,
"wrong checksum in input: %*ph\n", 4, data);
return;
}
/* Mask unwanted remote channels. */
/* note: remote_num is 0-based, channel 1 on remote == 0 here */
remote_num = (data[3] >> 4) & 0x0f;
if (channel_mask & (1 << (remote_num + 1))) {
dbginfo(&ati_remote->interface->dev,
"Masked input from channel 0x%02x: data %02x,%02x, "
"mask= 0x%02lx\n",
remote_num, data[1], data[2], channel_mask);
return;
}
/*
* MSB is a toggle code, though only used by some devices
* (e.g. SnapStream Firefly)
*/
scancode = data[2] & 0x7f;
dbginfo(&ati_remote->interface->dev,
"channel 0x%02x; key data %02x, scancode %02x\n",
remote_num, data[2], scancode);
if (scancode >= 0x70) {
/*
* This is either a mouse or scrollwheel event, depending on
* the remote/keymap.
* Get the keycode assigned to scancode 0x78/0x70. If it is
* set, assume this is a scrollwheel up/down event.
*/
wheel_keycode = rc_g_keycode_from_table(ati_remote->rdev,
scancode & 0x78);
if (wheel_keycode == KEY_RESERVED) {
/* scrollwheel was not mapped, assume mouse */
/* Look up event code index in the mouse translation
* table.
*/
for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++) {
if (scancode == ati_remote_tbl[i].data) {
index = i;
break;
}
}
}
}
if (index >= 0 && ati_remote_tbl[index].kind == KIND_LITERAL) {
input_event(dev, ati_remote_tbl[index].type,
ati_remote_tbl[index].code,
ati_remote_tbl[index].value);
input_sync(dev);
ati_remote->old_jiffies = jiffies;
return;
}
if (index < 0 || ati_remote_tbl[index].kind == KIND_FILTERED) {
unsigned long now = jiffies;
/* Filter duplicate events which happen "too close" together. */
if (ati_remote->old_data == data[2] &&
time_before(now, ati_remote->old_jiffies +
msecs_to_jiffies(repeat_filter))) {
ati_remote->repeat_count++;
} else {
ati_remote->repeat_count = 0;
ati_remote->first_jiffies = now;
}
ati_remote->old_data = data[2];
ati_remote->old_jiffies = now;
/* Ensure we skip at least the 4 first duplicate events (generated
* by a single keypress), and continue skipping until repeat_delay
* msecs have passed
*/
if (ati_remote->repeat_count > 0 &&
(ati_remote->repeat_count < 5 ||
time_before(now, ati_remote->first_jiffies +
msecs_to_jiffies(repeat_delay))))
return;
if (index < 0) {
/* Not a mouse event, hand it to rc-core. */
int count = 1;
if (wheel_keycode != KEY_RESERVED) {
/*
* This is a scrollwheel event, send the
* scroll up (0x78) / down (0x70) scancode
* repeatedly as many times as indicated by
* rest of the scancode.
*/
count = (scancode & 0x07) + 1;
scancode &= 0x78;
}
while (count--) {
/*
* We don't use the rc-core repeat handling yet as
* it would cause ghost repeats which would be a
* regression for this driver.
*/
rc_keydown_notimeout(ati_remote->rdev, scancode,
data[2]);
rc_keyup(ati_remote->rdev);
}
return;
}
input_event(dev, ati_remote_tbl[index].type,
ati_remote_tbl[index].code, 1);
input_sync(dev);
input_event(dev, ati_remote_tbl[index].type,
ati_remote_tbl[index].code, 0);
input_sync(dev);
} else {
/*
* Other event kinds are from the directional control pad, and
* have an acceleration factor applied to them. Without this
* acceleration, the control pad is mostly unusable.
*/
acc = ati_remote_compute_accel(ati_remote);
switch (ati_remote_tbl[index].kind) {
case KIND_ACCEL:
input_event(dev, ati_remote_tbl[index].type,
ati_remote_tbl[index].code,
ati_remote_tbl[index].value * acc);
break;
case KIND_LU:
input_report_rel(dev, REL_X, -acc);
input_report_rel(dev, REL_Y, -acc);
break;
case KIND_RU:
input_report_rel(dev, REL_X, acc);
input_report_rel(dev, REL_Y, -acc);
break;
case KIND_LD:
input_report_rel(dev, REL_X, -acc);
input_report_rel(dev, REL_Y, acc);
break;
case KIND_RD:
input_report_rel(dev, REL_X, acc);
input_report_rel(dev, REL_Y, acc);
break;
default:
dev_dbg(&ati_remote->interface->dev,
"ati_remote kind=%d\n",
ati_remote_tbl[index].kind);
}
input_sync(dev);
ati_remote->old_jiffies = jiffies;
ati_remote->old_data = data[2];
}
}
/*
* ati_remote_irq_in
*/
static void ati_remote_irq_in(struct urb *urb)
{
struct ati_remote *ati_remote = urb->context;
int retval;
switch (urb->status) {
case 0: /* success */
ati_remote_input_report(urb);
break;
case -ECONNRESET: /* unlink */
case -ENOENT:
case -ESHUTDOWN:
dev_dbg(&ati_remote->interface->dev,
"%s: urb error status, unlink?\n",
__func__);
return;
default: /* error */
dev_dbg(&ati_remote->interface->dev,
"%s: Nonzero urb status %d\n",
__func__, urb->status);
}
retval = usb_submit_urb(urb, GFP_ATOMIC);
if (retval)
dev_err(&ati_remote->interface->dev,
"%s: usb_submit_urb()=%d\n",
__func__, retval);
}
/*
* ati_remote_alloc_buffers
*/
static int ati_remote_alloc_buffers(struct usb_device *udev,
struct ati_remote *ati_remote)
{
ati_remote->inbuf = usb_alloc_coherent(udev, DATA_BUFSIZE, GFP_ATOMIC,
&ati_remote->inbuf_dma);
if (!ati_remote->inbuf)
return -1;
ati_remote->outbuf = usb_alloc_coherent(udev, DATA_BUFSIZE, GFP_ATOMIC,
&ati_remote->outbuf_dma);
if (!ati_remote->outbuf)
return -1;
ati_remote->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!ati_remote->irq_urb)
return -1;
ati_remote->out_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!ati_remote->out_urb)
return -1;
return 0;
}
/*
* ati_remote_free_buffers
*/
static void ati_remote_free_buffers(struct ati_remote *ati_remote)
{
usb_free_urb(ati_remote->irq_urb);
usb_free_urb(ati_remote->out_urb);
usb_free_coherent(ati_remote->udev, DATA_BUFSIZE,
ati_remote->inbuf, ati_remote->inbuf_dma);
usb_free_coherent(ati_remote->udev, DATA_BUFSIZE,
ati_remote->outbuf, ati_remote->outbuf_dma);
}
static void ati_remote_input_init(struct ati_remote *ati_remote)
{
struct input_dev *idev = ati_remote->idev;
int i;
idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
idev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_SIDE) | BIT_MASK(BTN_EXTRA);
idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++)
if (ati_remote_tbl[i].type == EV_KEY)
set_bit(ati_remote_tbl[i].code, idev->keybit);
input_set_drvdata(idev, ati_remote);
idev->open = ati_remote_input_open;
idev->close = ati_remote_input_close;
idev->name = ati_remote->mouse_name;
idev->phys = ati_remote->mouse_phys;
usb_to_input_id(ati_remote->udev, &idev->id);
idev->dev.parent = &ati_remote->interface->dev;
}
static void ati_remote_rc_init(struct ati_remote *ati_remote)
{
struct rc_dev *rdev = ati_remote->rdev;
rdev->priv = ati_remote;
rdev->driver_type = RC_DRIVER_SCANCODE;
rdev->allowed_protos = RC_TYPE_OTHER;
rdev->driver_name = "ati_remote";
rdev->open = ati_remote_rc_open;
rdev->close = ati_remote_rc_close;
rdev->input_name = ati_remote->rc_name;
rdev->input_phys = ati_remote->rc_phys;
usb_to_input_id(ati_remote->udev, &rdev->input_id);
rdev->dev.parent = &ati_remote->interface->dev;
}
static int ati_remote_initialize(struct ati_remote *ati_remote)
{
struct usb_device *udev = ati_remote->udev;
int pipe, maxp;
init_waitqueue_head(&ati_remote->wait);
/* Set up irq_urb */
pipe = usb_rcvintpipe(udev, ati_remote->endpoint_in->bEndpointAddress);
maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
usb_fill_int_urb(ati_remote->irq_urb, udev, pipe, ati_remote->inbuf,
maxp, ati_remote_irq_in, ati_remote,
ati_remote->endpoint_in->bInterval);
ati_remote->irq_urb->transfer_dma = ati_remote->inbuf_dma;
ati_remote->irq_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
/* Set up out_urb */
pipe = usb_sndintpipe(udev, ati_remote->endpoint_out->bEndpointAddress);
maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
maxp = (maxp > DATA_BUFSIZE) ? DATA_BUFSIZE : maxp;
usb_fill_int_urb(ati_remote->out_urb, udev, pipe, ati_remote->outbuf,
maxp, ati_remote_irq_out, ati_remote,
ati_remote->endpoint_out->bInterval);
ati_remote->out_urb->transfer_dma = ati_remote->outbuf_dma;
ati_remote->out_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
/* send initialization strings */
if ((ati_remote_sendpacket(ati_remote, 0x8004, init1)) ||
(ati_remote_sendpacket(ati_remote, 0x8007, init2))) {
dev_err(&ati_remote->interface->dev,
"Initializing ati_remote hardware failed.\n");
return -EIO;
}
return 0;
}
/*
* ati_remote_probe
*/
static int ati_remote_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
struct usb_device *udev = interface_to_usbdev(interface);
struct usb_host_interface *iface_host = interface->cur_altsetting;
struct usb_endpoint_descriptor *endpoint_in, *endpoint_out;
struct ati_receiver_type *type = (struct ati_receiver_type *)id->driver_info;
struct ati_remote *ati_remote;
struct input_dev *input_dev;
struct rc_dev *rc_dev;
int err = -ENOMEM;
if (iface_host->desc.bNumEndpoints != 2) {
err("%s: Unexpected desc.bNumEndpoints\n", __func__);
return -ENODEV;
}
endpoint_in = &iface_host->endpoint[0].desc;
endpoint_out = &iface_host->endpoint[1].desc;
if (!usb_endpoint_is_int_in(endpoint_in)) {
err("%s: Unexpected endpoint_in\n", __func__);
return -ENODEV;
}
if (le16_to_cpu(endpoint_in->wMaxPacketSize) == 0) {
err("%s: endpoint_in message size==0? \n", __func__);
return -ENODEV;
}
ati_remote = kzalloc(sizeof (struct ati_remote), GFP_KERNEL);
rc_dev = rc_allocate_device();
if (!ati_remote || !rc_dev)
goto fail1;
/* Allocate URB buffers, URBs */
if (ati_remote_alloc_buffers(udev, ati_remote))
goto fail2;
ati_remote->endpoint_in = endpoint_in;
ati_remote->endpoint_out = endpoint_out;
ati_remote->udev = udev;
ati_remote->rdev = rc_dev;
ati_remote->interface = interface;
usb_make_path(udev, ati_remote->rc_phys, sizeof(ati_remote->rc_phys));
strlcpy(ati_remote->mouse_phys, ati_remote->rc_phys,
sizeof(ati_remote->mouse_phys));
strlcat(ati_remote->rc_phys, "/input0", sizeof(ati_remote->rc_phys));
strlcat(ati_remote->mouse_phys, "/input1", sizeof(ati_remote->mouse_phys));
if (udev->manufacturer)
strlcpy(ati_remote->rc_name, udev->manufacturer,
sizeof(ati_remote->rc_name));
if (udev->product)
snprintf(ati_remote->rc_name, sizeof(ati_remote->rc_name),
"%s %s", ati_remote->rc_name, udev->product);
if (!strlen(ati_remote->rc_name))
snprintf(ati_remote->rc_name, sizeof(ati_remote->rc_name),
DRIVER_DESC "(%04x,%04x)",
le16_to_cpu(ati_remote->udev->descriptor.idVendor),
le16_to_cpu(ati_remote->udev->descriptor.idProduct));
snprintf(ati_remote->mouse_name, sizeof(ati_remote->mouse_name),
"%s mouse", ati_remote->rc_name);
rc_dev->map_name = RC_MAP_ATI_X10; /* default map */
/* set default keymap according to receiver model */
if (type) {
if (type->default_keymap)
rc_dev->map_name = type->default_keymap;
else if (type->get_default_keymap)
rc_dev->map_name = type->get_default_keymap(interface);
}
ati_remote_rc_init(ati_remote);
mutex_init(&ati_remote->open_mutex);
/* Device Hardware Initialization - fills in ati_remote->idev from udev. */
err = ati_remote_initialize(ati_remote);
if (err)
goto fail3;
/* Set up and register rc device */
err = rc_register_device(ati_remote->rdev);
if (err)
goto fail3;
/* use our delay for rc_dev */
ati_remote->rdev->input_dev->rep[REP_DELAY] = repeat_delay;
/* Set up and register mouse input device */
if (mouse) {
input_dev = input_allocate_device();
if (!input_dev) {
err = -ENOMEM;
goto fail4;
}
ati_remote->idev = input_dev;
ati_remote_input_init(ati_remote);
err = input_register_device(input_dev);
if (err)
goto fail5;
}
usb_set_intfdata(interface, ati_remote);
return 0;
fail5: input_free_device(input_dev);
fail4: rc_unregister_device(rc_dev);
rc_dev = NULL;
fail3: usb_kill_urb(ati_remote->irq_urb);
usb_kill_urb(ati_remote->out_urb);
fail2: ati_remote_free_buffers(ati_remote);
fail1: rc_free_device(rc_dev);
kfree(ati_remote);
return err;
}
/*
* ati_remote_disconnect
*/
static void ati_remote_disconnect(struct usb_interface *interface)
{
struct ati_remote *ati_remote;
ati_remote = usb_get_intfdata(interface);
usb_set_intfdata(interface, NULL);
if (!ati_remote) {
dev_warn(&interface->dev, "%s - null device?\n", __func__);
return;
}
usb_kill_urb(ati_remote->irq_urb);
usb_kill_urb(ati_remote->out_urb);
if (ati_remote->idev)
input_unregister_device(ati_remote->idev);
rc_unregister_device(ati_remote->rdev);
ati_remote_free_buffers(ati_remote);
kfree(ati_remote);
}
/* usb specific object to register with the usb subsystem */
static struct usb_driver ati_remote_driver = {
.name = "ati_remote",
.probe = ati_remote_probe,
.disconnect = ati_remote_disconnect,
.id_table = ati_remote_table,
};
module_usb_driver(ati_remote_driver);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
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