[media] move ati_remote driver from input/misc to media/rc
The driver will be migrated to the RC driver API in a following
commit.
[mchehab@redhat.com: Fix some bad whitespacing]
Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/rc/Kconfig b/drivers/media/rc/Kconfig
index 899f783..756884e 100644
--- a/drivers/media/rc/Kconfig
+++ b/drivers/media/rc/Kconfig
@@ -4,8 +4,8 @@
default INPUT
---help---
Enable support for Remote Controllers on Linux. This is
- needed in order to support several video capture adapters.
- Currently, all supported devices use InfraRed.
+ needed in order to support several video capture adapters,
+ standalone IR receivers/transmitters, and RF receivers.
Enable this option if you have a video capture board even
if you don't need IR, as otherwise, you may not be able to
@@ -108,6 +108,22 @@
Enable this option to pass raw IR to and from userspace via
the LIRC interface.
+config RC_ATI_REMOTE
+ tristate "ATI / X10 USB RF remote control"
+ depends on USB_ARCH_HAS_HCD
+ select USB
+ help
+ Say Y here if you want to use an ATI or X10 "Lola" USB remote control.
+ These are RF remotes with USB receivers.
+ The ATI remote comes with many of ATI's All-In-Wonder video cards.
+ The X10 "Lola" remote is available at:
+ <http://www.x10.com/products/lola_sg1.htm>
+ This driver provides mouse pointer, left and right mouse buttons,
+ and maps all the other remote buttons to keypress events.
+
+ To compile this driver as a module, choose M here: the module will be
+ called ati_remote.
+
config IR_ENE
tristate "ENE eHome Receiver/Transceiver (pnp id: ENE0100/ENE02xxx)"
depends on PNP
diff --git a/drivers/media/rc/Makefile b/drivers/media/rc/Makefile
index f224db0..2156e78 100644
--- a/drivers/media/rc/Makefile
+++ b/drivers/media/rc/Makefile
@@ -14,6 +14,7 @@
obj-$(CONFIG_IR_LIRC_CODEC) += ir-lirc-codec.o
# stand-alone IR receivers/transmitters
+obj-$(CONFIG_RC_ATI_REMOTE) += ati_remote.o
obj-$(CONFIG_IR_IMON) += imon.o
obj-$(CONFIG_IR_ITE_CIR) += ite-cir.o
obj-$(CONFIG_IR_MCEUSB) += mceusb.o
diff --git a/drivers/media/rc/ati_remote.c b/drivers/media/rc/ati_remote.c
new file mode 100644
index 0000000..53388a5
--- /dev/null
+++ b/drivers/media/rc/ati_remote.c
@@ -0,0 +1,867 @@
+/*
+ * USB ATI Remote support
+ *
+ * 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/usb/input.h>
+#include <linux/wait.h>
+#include <linux/jiffies.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 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");
+
+#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)
+
+static struct usb_device_id ati_remote_table[] = {
+ { USB_DEVICE(ATI_REMOTE_VENDOR_ID, LOLA_REMOTE_PRODUCT_ID) },
+ { USB_DEVICE(ATI_REMOTE_VENDOR_ID, LOLA2_REMOTE_PRODUCT_ID) },
+ { USB_DEVICE(ATI_REMOTE_VENDOR_ID, ATI_REMOTE_PRODUCT_ID) },
+ { USB_DEVICE(ATI_REMOTE_VENDOR_ID, NVIDIA_REMOTE_PRODUCT_ID) },
+ { USB_DEVICE(ATI_REMOTE_VENDOR_ID, MEDION_REMOTE_PRODUCT_ID) },
+ {} /* 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 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[2]; /* Detect duplicate events */
+ unsigned long old_jiffies;
+ unsigned long acc_jiffies; /* handle acceleration */
+ unsigned long first_jiffies;
+
+ unsigned int repeat_count;
+
+ char name[NAME_BUFSIZE];
+ char phys[NAME_BUFSIZE];
+
+ wait_queue_head_t wait;
+ int send_flags;
+};
+
+/* "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 data1, data2;
+ int type;
+ unsigned int code;
+ int value;
+} ati_remote_tbl[] = {
+ /* Directional control pad axes */
+ {KIND_ACCEL, 0x35, 0x70, EV_REL, REL_X, -1}, /* left */
+ {KIND_ACCEL, 0x36, 0x71, EV_REL, REL_X, 1}, /* right */
+ {KIND_ACCEL, 0x37, 0x72, EV_REL, REL_Y, -1}, /* up */
+ {KIND_ACCEL, 0x38, 0x73, EV_REL, REL_Y, 1}, /* down */
+ /* Directional control pad diagonals */
+ {KIND_LU, 0x39, 0x74, EV_REL, 0, 0}, /* left up */
+ {KIND_RU, 0x3a, 0x75, EV_REL, 0, 0}, /* right up */
+ {KIND_LD, 0x3c, 0x77, EV_REL, 0, 0}, /* left down */
+ {KIND_RD, 0x3b, 0x76, EV_REL, 0, 0}, /* right down */
+
+ /* "Mouse button" buttons */
+ {KIND_LITERAL, 0x3d, 0x78, EV_KEY, BTN_LEFT, 1}, /* left btn down */
+ {KIND_LITERAL, 0x3e, 0x79, EV_KEY, BTN_LEFT, 0}, /* left btn up */
+ {KIND_LITERAL, 0x41, 0x7c, EV_KEY, BTN_RIGHT, 1},/* right btn down */
+ {KIND_LITERAL, 0x42, 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, 0x3f, 0x7a, EV_KEY, BTN_SIDE, 1}, /* left dblclick */
+ {KIND_FILTERED, 0x43, 0x7e, EV_KEY, BTN_EXTRA, 1},/* right dblclick */
+
+ /* keyboard. */
+ {KIND_FILTERED, 0xd2, 0x0d, EV_KEY, KEY_1, 1},
+ {KIND_FILTERED, 0xd3, 0x0e, EV_KEY, KEY_2, 1},
+ {KIND_FILTERED, 0xd4, 0x0f, EV_KEY, KEY_3, 1},
+ {KIND_FILTERED, 0xd5, 0x10, EV_KEY, KEY_4, 1},
+ {KIND_FILTERED, 0xd6, 0x11, EV_KEY, KEY_5, 1},
+ {KIND_FILTERED, 0xd7, 0x12, EV_KEY, KEY_6, 1},
+ {KIND_FILTERED, 0xd8, 0x13, EV_KEY, KEY_7, 1},
+ {KIND_FILTERED, 0xd9, 0x14, EV_KEY, KEY_8, 1},
+ {KIND_FILTERED, 0xda, 0x15, EV_KEY, KEY_9, 1},
+ {KIND_FILTERED, 0xdc, 0x17, EV_KEY, KEY_0, 1},
+ {KIND_FILTERED, 0xc5, 0x00, EV_KEY, KEY_A, 1},
+ {KIND_FILTERED, 0xc6, 0x01, EV_KEY, KEY_B, 1},
+ {KIND_FILTERED, 0xde, 0x19, EV_KEY, KEY_C, 1},
+ {KIND_FILTERED, 0xe0, 0x1b, EV_KEY, KEY_D, 1},
+ {KIND_FILTERED, 0xe6, 0x21, EV_KEY, KEY_E, 1},
+ {KIND_FILTERED, 0xe8, 0x23, EV_KEY, KEY_F, 1},
+
+ /* "special" keys */
+ {KIND_FILTERED, 0xdd, 0x18, EV_KEY, KEY_KPENTER, 1}, /* "check" */
+ {KIND_FILTERED, 0xdb, 0x16, EV_KEY, KEY_MENU, 1}, /* "menu" */
+ {KIND_FILTERED, 0xc7, 0x02, EV_KEY, KEY_POWER, 1}, /* Power */
+ {KIND_FILTERED, 0xc8, 0x03, EV_KEY, KEY_TV, 1}, /* TV */
+ {KIND_FILTERED, 0xc9, 0x04, EV_KEY, KEY_DVD, 1}, /* DVD */
+ {KIND_FILTERED, 0xca, 0x05, EV_KEY, KEY_WWW, 1}, /* WEB */
+ {KIND_FILTERED, 0xcb, 0x06, EV_KEY, KEY_BOOKMARKS, 1}, /* "book" */
+ {KIND_FILTERED, 0xcc, 0x07, EV_KEY, KEY_EDIT, 1}, /* "hand" */
+ {KIND_FILTERED, 0xe1, 0x1c, EV_KEY, KEY_COFFEE, 1}, /* "timer" */
+ {KIND_FILTERED, 0xe5, 0x20, EV_KEY, KEY_FRONT, 1}, /* "max" */
+ {KIND_FILTERED, 0xe2, 0x1d, EV_KEY, KEY_LEFT, 1}, /* left */
+ {KIND_FILTERED, 0xe4, 0x1f, EV_KEY, KEY_RIGHT, 1}, /* right */
+ {KIND_FILTERED, 0xe7, 0x22, EV_KEY, KEY_DOWN, 1}, /* down */
+ {KIND_FILTERED, 0xdf, 0x1a, EV_KEY, KEY_UP, 1}, /* up */
+ {KIND_FILTERED, 0xe3, 0x1e, EV_KEY, KEY_OK, 1}, /* "OK" */
+ {KIND_FILTERED, 0xce, 0x09, EV_KEY, KEY_VOLUMEDOWN, 1}, /* VOL + */
+ {KIND_FILTERED, 0xcd, 0x08, EV_KEY, KEY_VOLUMEUP, 1}, /* VOL - */
+ {KIND_FILTERED, 0xcf, 0x0a, EV_KEY, KEY_MUTE, 1}, /* MUTE */
+ {KIND_FILTERED, 0xd0, 0x0b, EV_KEY, KEY_CHANNELUP, 1}, /* CH + */
+ {KIND_FILTERED, 0xd1, 0x0c, EV_KEY, KEY_CHANNELDOWN, 1},/* CH - */
+ {KIND_FILTERED, 0xec, 0x27, EV_KEY, KEY_RECORD, 1}, /* ( o) red */
+ {KIND_FILTERED, 0xea, 0x25, EV_KEY, KEY_PLAY, 1}, /* ( >) */
+ {KIND_FILTERED, 0xe9, 0x24, EV_KEY, KEY_REWIND, 1}, /* (<<) */
+ {KIND_FILTERED, 0xeb, 0x26, EV_KEY, KEY_FORWARD, 1}, /* (>>) */
+ {KIND_FILTERED, 0xed, 0x28, EV_KEY, KEY_STOP, 1}, /* ([]) */
+ {KIND_FILTERED, 0xee, 0x29, EV_KEY, KEY_PAUSE, 1}, /* ('') */
+ {KIND_FILTERED, 0xf0, 0x2b, EV_KEY, KEY_PREVIOUS, 1}, /* (<-) */
+ {KIND_FILTERED, 0xef, 0x2a, EV_KEY, KEY_NEXT, 1}, /* (>+) */
+ {KIND_FILTERED, 0xf2, 0x2D, EV_KEY, KEY_INFO, 1}, /* PLAYING */
+ {KIND_FILTERED, 0xf3, 0x2E, EV_KEY, KEY_HOME, 1}, /* TOP */
+ {KIND_FILTERED, 0xf4, 0x2F, EV_KEY, KEY_END, 1}, /* END */
+ {KIND_FILTERED, 0xf5, 0x30, EV_KEY, KEY_SELECT, 1}, /* SELECT */
+
+ {KIND_END, 0x00, 0x00, EV_MAX + 1, 0, 0}
+};
+
+/* Local function prototypes */
+static int ati_remote_open (struct input_dev *inputdev);
+static void ati_remote_close (struct input_dev *inputdev);
+static int ati_remote_sendpacket (struct ati_remote *ati_remote, u16 cmd, unsigned char *data);
+static void ati_remote_irq_out (struct urb *urb);
+static void ati_remote_irq_in (struct urb *urb);
+static void ati_remote_input_report (struct urb *urb);
+static int ati_remote_initialize (struct ati_remote *ati_remote);
+static int ati_remote_probe (struct usb_interface *interface, const struct usb_device_id *id);
+static void ati_remote_disconnect (struct usb_interface *interface);
+
+/* 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,
+};
+
+/*
+ * ati_remote_dump_input
+ */
+static void ati_remote_dump(struct device *dev, unsigned char *data,
+ unsigned int len)
+{
+ if ((len == 1) && (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 %02x %02x %02x %02x\n",
+ data[0], data[1], data[2], data[3]);
+ else
+ dev_warn(dev, "Weird data, len=%d %02x %02x %02x %02x %02x %02x ...\n",
+ len, data[0], data[1], data[2], data[3], data[4], data[5]);
+}
+
+/*
+ * ati_remote_open
+ */
+static int ati_remote_open(struct input_dev *inputdev)
+{
+ struct ati_remote *ati_remote = input_get_drvdata(inputdev);
+
+ /* 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__);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+/*
+ * ati_remote_close
+ */
+static void ati_remote_close(struct input_dev *inputdev)
+{
+ struct ati_remote *ati_remote = input_get_drvdata(inputdev);
+
+ usb_kill_urb(ati_remote->irq_urb);
+}
+
+/*
+ * 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_event_lookup
+ */
+static int ati_remote_event_lookup(int rem, unsigned char d1, unsigned char d2)
+{
+ int i;
+
+ for (i = 0; ati_remote_tbl[i].kind != KIND_END; i++) {
+ /*
+ * Decide if the table entry matches the remote input.
+ */
+ if ((((ati_remote_tbl[i].data1 & 0x0f) == (d1 & 0x0f))) &&
+ ((((ati_remote_tbl[i].data1 >> 4) -
+ (d1 >> 4) + rem) & 0x0f) == 0x0f) &&
+ (ati_remote_tbl[i].data2 == d2))
+ return i;
+
+ }
+ return -1;
+}
+
+/*
+ * 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, acc;
+ int remote_num;
+
+ /* 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;
+ }
+
+ /* 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;
+ }
+
+ /* Look up event code index in translation table */
+ index = ati_remote_event_lookup(remote_num, data[1], data[2]);
+ if (index < 0) {
+ dev_warn(&ati_remote->interface->dev,
+ "Unknown input from channel 0x%02x: data %02x,%02x\n",
+ remote_num, data[1], data[2]);
+ return;
+ }
+ dbginfo(&ati_remote->interface->dev,
+ "channel 0x%02x; data %02x,%02x; index %d; keycode %d\n",
+ remote_num, data[1], data[2], index, ati_remote_tbl[index].code);
+
+ if (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 (ati_remote_tbl[index].kind == KIND_FILTERED) {
+ unsigned long now = jiffies;
+
+ /* Filter duplicate events which happen "too close" together. */
+ if (ati_remote->old_data[0] == data[1] &&
+ ati_remote->old_data[1] == 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[0] = data[1];
+ ati_remote->old_data[1] = 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;
+
+
+ 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[0] = data[1];
+ ati_remote->old_data[1] = 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_open;
+ idev->close = ati_remote_close;
+
+ idev->name = ati_remote->name;
+ idev->phys = ati_remote->phys;
+
+ usb_to_input_id(ati_remote->udev, &idev->id);
+ idev->dev.parent = &ati_remote->udev->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_remote *ati_remote;
+ struct input_dev *input_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);
+ input_dev = input_allocate_device();
+ if (!ati_remote || !input_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->idev = input_dev;
+ ati_remote->interface = interface;
+
+ usb_make_path(udev, ati_remote->phys, sizeof(ati_remote->phys));
+ strlcat(ati_remote->phys, "/input0", sizeof(ati_remote->phys));
+
+ if (udev->manufacturer)
+ strlcpy(ati_remote->name, udev->manufacturer, sizeof(ati_remote->name));
+
+ if (udev->product)
+ snprintf(ati_remote->name, sizeof(ati_remote->name),
+ "%s %s", ati_remote->name, udev->product);
+
+ if (!strlen(ati_remote->name))
+ snprintf(ati_remote->name, sizeof(ati_remote->name),
+ DRIVER_DESC "(%04x,%04x)",
+ le16_to_cpu(ati_remote->udev->descriptor.idVendor),
+ le16_to_cpu(ati_remote->udev->descriptor.idProduct));
+
+ ati_remote_input_init(ati_remote);
+
+ /* Device Hardware Initialization - fills in ati_remote->idev from udev. */
+ err = ati_remote_initialize(ati_remote);
+ if (err)
+ goto fail3;
+
+ /* Set up and register input device */
+ err = input_register_device(ati_remote->idev);
+ if (err)
+ goto fail3;
+
+ usb_set_intfdata(interface, ati_remote);
+ return 0;
+
+ fail3: usb_kill_urb(ati_remote->irq_urb);
+ usb_kill_urb(ati_remote->out_urb);
+ fail2: ati_remote_free_buffers(ati_remote);
+ fail1: input_free_device(input_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);
+ input_unregister_device(ati_remote->idev);
+ ati_remote_free_buffers(ati_remote);
+ kfree(ati_remote);
+}
+
+/*
+ * ati_remote_init
+ */
+static int __init ati_remote_init(void)
+{
+ int result;
+
+ result = usb_register(&ati_remote_driver);
+ if (result)
+ printk(KERN_ERR KBUILD_MODNAME
+ ": usb_register error #%d\n", result);
+ else
+ printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
+ DRIVER_DESC "\n");
+
+ return result;
+}
+
+/*
+ * ati_remote_exit
+ */
+static void __exit ati_remote_exit(void)
+{
+ usb_deregister(&ati_remote_driver);
+}
+
+/*
+ * module specification
+ */
+
+module_init(ati_remote_init);
+module_exit(ati_remote_exit);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");