===================================================================
@@ -11,6 +11,12 @@ menuconfig INPUT_LIRC
if INPUT_LIRC
+config LIRC_IMON
+ tristate "SoundGraph iMON Receiver and Display"
+ depends on LIRC_DEV
+ help
+ Driver for the SoundGraph iMON IR Receiver and Display
+
config LIRC_MCEUSB
tristate "Windows Media Center Ed. USB IR Transceiver"
depends on LIRC_DEV && USB
===================================================================
@@ -4,4 +4,5 @@
# Each configuration option enables a list of files.
obj-$(CONFIG_INPUT_LIRC) += lirc_dev.o
+obj-$(CONFIG_LIRC_IMON) += lirc_imon.o
obj-$(CONFIG_LIRC_MCEUSB) += lirc_mceusb.o
===================================================================
@@ -0,0 +1,2471 @@
+/*
+ * lirc_imon.c: LIRC/VFD/LCD driver for SoundGraph iMON IR/VFD/LCD
+ * including the iMON PAD model
+ *
+ * Copyright(C) 2004 Venky Raju(dev@venky.ws)
+ * Copyright(C) 2009 Jarod Wilson <jarod@wilsonet.com>
+ *
+ * lirc_imon 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+#include <linux/usb.h>
+#include <linux/usb/input.h>
+#include <linux/time.h>
+#include <linux/timer.h>
+
+#include "lirc.h"
+#include "lirc_dev.h"
+#include "lirc_imon.h"
+
+
+#define MOD_AUTHOR "Venky Raju <dev@venky.ws>"
+#define MOD_AUTHOR2 "Jarod Wilson <jarod@wilsonet.com>"
+#define MOD_DESC "Driver for SoundGraph iMON MultiMedia IR/Display"
+#define MOD_NAME "lirc_imon"
+#define MOD_VERSION "0.7"
+
+#define DISPLAY_MINOR_BASE 144
+#define DEVICE_NAME "lcd%d"
+
+#define BUF_CHUNK_SIZE 4
+#define BUF_SIZE 128
+
+#define BIT_DURATION 250 /* each bit received is 250us */
+
+#define IMON_CLOCK_ENABLE_PACKETS 2
+
+/*** P R O T O T Y P E S ***/
+
+/* USB Callback prototypes */
+static int imon_probe(struct usb_interface *interface,
+ const struct usb_device_id *id);
+static void imon_disconnect(struct usb_interface *interface);
+static void usb_rx_callback_intf0(struct urb *urb);
+static void usb_rx_callback_intf1(struct urb *urb);
+static void usb_tx_callback(struct urb *urb);
+
+/* suspend/resume support */
+static int imon_resume(struct usb_interface *intf);
+static int imon_suspend(struct usb_interface *intf, pm_message_t message);
+
+/* Display file_operations function prototypes */
+static int display_open(struct inode *inode, struct file *file);
+static int display_close(struct inode *inode, struct file *file);
+
+/* VFD write operation */
+static ssize_t vfd_write(struct file *file, const char *buf,
+ size_t n_bytes, loff_t *pos);
+
+/* LCD file_operations override function prototypes */
+static ssize_t lcd_write(struct file *file, const char *buf,
+ size_t n_bytes, loff_t *pos);
+
+/* LIRC driver function prototypes */
+static int ir_open(void *data);
+static void ir_close(void *data);
+
+/* Driver init/exit prototypes */
+static int __init imon_init(void);
+static void __exit imon_exit(void);
+
+/*** G L O B A L S ***/
+
+struct imon_context {
+ struct usb_device *usbdev_intf0;
+ /* Newer devices have two interfaces */
+ struct usb_device *usbdev_intf1;
+ int display_supported; /* not all controllers do */
+ int display_isopen; /* display port has been opened */
+ int ir_isopen; /* IR port open */
+ int ir_isassociating; /* IR port open for association */
+ int dev_present_intf0; /* USB device presence, interface 0 */
+ int dev_present_intf1; /* USB device presence, interface 1 */
+ struct mutex lock; /* to lock this object */
+ wait_queue_head_t remove_ok; /* For unexpected USB disconnects */
+
+ int vfd_proto_6p; /* some VFD require a 6th packet */
+ int ir_onboard_decode; /* IR signals decoded onboard */
+
+ struct lirc_driver *driver;
+ struct usb_endpoint_descriptor *rx_endpoint_intf0;
+ struct usb_endpoint_descriptor *rx_endpoint_intf1;
+ struct usb_endpoint_descriptor *tx_endpoint;
+ struct urb *rx_urb_intf0;
+ struct urb *rx_urb_intf1;
+ struct urb *tx_urb;
+ int tx_control;
+ unsigned char usb_rx_buf[8];
+ unsigned char usb_tx_buf[8];
+
+ struct rx_data {
+ int count; /* length of 0 or 1 sequence */
+ int prev_bit; /* logic level of sequence */
+ int initial_space; /* initial space flag */
+ } rx;
+
+ struct tx_t {
+ unsigned char data_buf[35]; /* user data buffer */
+ struct completion finished; /* wait for write to finish */
+ atomic_t busy; /* write in progress */
+ int status; /* status of tx completion */
+ } tx;
+
+ int ffdc_dev; /* is this the overused ffdc ID? */
+ int ir_protocol; /* iMON or MCE (RC6) IR protocol? */
+ struct input_dev *idev; /* input device for remote */
+ struct input_dev *touch; /* input device for touchscreen */
+ u16 last_keycode; /* last reported input keycode */
+ u8 last_mce_byte; /* last mce toggle byte */
+ int display_type; /* store the display type */
+ int pad_mouse; /* toggle kbd(0)/mouse(1) mode */
+ int touch_x; /* x coordinate on touchscreen */
+ int touch_y; /* y coordinate on touchscreen */
+ char name_idev[128];
+ char phys_idev[64];
+ char name_touch[128];
+ char phys_touch[64];
+ struct timer_list timer;
+};
+
+#define TOUCH_TIMEOUT (HZ/30)
+
+/* display file operations. Nb: lcd_write will be subbed in as needed later */
+static struct file_operations display_fops = {
+ .owner = THIS_MODULE,
+ .open = &display_open,
+ .write = &vfd_write,
+ .release = &display_close
+};
+
+enum {
+ IMON_DISPLAY_TYPE_AUTO = 0,
+ IMON_DISPLAY_TYPE_VFD = 1,
+ IMON_DISPLAY_TYPE_LCD = 2,
+ IMON_DISPLAY_TYPE_VGA = 3,
+ IMON_DISPLAY_TYPE_NONE = 4,
+};
+
+enum {
+ IMON_IR_PROTOCOL_IMON = 0,
+ IMON_IR_PROTOCOL_MCE = 1,
+ IMON_IR_PROTOCOL_IMON_NOPAD = 2,
+};
+/*
+ * USB Device ID for iMON USB Control Boards
+ *
+ * The Windows drivers contain 6 different inf files, more or less one for
+ * each new device until the 0x0034-0x0046 devices, which all use the same
+ * driver. Some of the devices in the 34-46 range haven't been definitively
+ * identified yet. Early devices have either a TriGem Computer, Inc. or a
+ * Samsung vendor ID (0x0aa8 and 0x04e8 respectively), while all later
+ * devices use the SoundGraph vendor ID (0x15c2).
+ */
+static struct usb_device_id imon_usb_id_table[] = {
+ /* TriGem iMON (IR only) -- TG_iMON.inf */
+ { USB_DEVICE(0x0aa8, 0x8001) },
+
+ /* SoundGraph iMON (IR only) -- sg_imon.inf */
+ { USB_DEVICE(0x04e8, 0xff30) },
+
+ /* SoundGraph iMON VFD (IR & VFD) -- iMON_VFD.inf */
+ { USB_DEVICE(0x0aa8, 0xffda) },
+
+ /* SoundGraph iMON SS (IR & VFD) -- iMON_SS.inf */
+ { USB_DEVICE(0x15c2, 0xffda) },
+
+ /*
+ * Several devices with this same device ID, all use iMON_PAD.inf
+ * SoundGraph iMON PAD (IR & VFD)
+ * SoundGraph iMON PAD (IR & LCD)
+ * SoundGraph iMON Knob (IR only)
+ */
+ { USB_DEVICE(0x15c2, 0xffdc) },
+
+ /*
+ * Newer devices, all driven by the latest iMON Windows driver, full
+ * list of device IDs extracted via 'strings Setup/data1.hdr |grep 15c2'
+ * Need user input to fill in details on unknown devices.
+ */
+ /* SoundGraph iMON OEM Touch LCD (IR & 7" VGA LCD) */
+ { USB_DEVICE(0x15c2, 0x0034) },
+ /* SoundGraph iMON OEM Touch LCD (IR & 4.3" VGA LCD) */
+ { USB_DEVICE(0x15c2, 0x0035) },
+ /* SoundGraph iMON OEM VFD (IR & VFD) */
+ { USB_DEVICE(0x15c2, 0x0036) },
+ /* device specifics unknown */
+ { USB_DEVICE(0x15c2, 0x0037) },
+ /* SoundGraph iMON OEM LCD (IR & LCD) */
+ { USB_DEVICE(0x15c2, 0x0038) },
+ /* device specifics unknown */
+ { USB_DEVICE(0x15c2, 0x0039) },
+ /* device specifics unknown */
+ { USB_DEVICE(0x15c2, 0x003a) },
+ /* device specifics unknown */
+ { USB_DEVICE(0x15c2, 0x003b) },
+ /* SoundGraph iMON OEM Inside (IR only) */
+ { USB_DEVICE(0x15c2, 0x003c) },
+ /* device specifics unknown */
+ { USB_DEVICE(0x15c2, 0x003d) },
+ /* device specifics unknown */
+ { USB_DEVICE(0x15c2, 0x003e) },
+ /* device specifics unknown */
+ { USB_DEVICE(0x15c2, 0x003f) },
+ /* device specifics unknown */
+ { USB_DEVICE(0x15c2, 0x0040) },
+ /* SoundGraph iMON MINI (IR only) */
+ { USB_DEVICE(0x15c2, 0x0041) },
+ /* Antec Veris Multimedia Station EZ External (IR only) */
+ { USB_DEVICE(0x15c2, 0x0042) },
+ /* Antec Veris Multimedia Station Basic Internal (IR only) */
+ { USB_DEVICE(0x15c2, 0x0043) },
+ /* Antec Veris Multimedia Station Elite (IR & VFD) */
+ { USB_DEVICE(0x15c2, 0x0044) },
+ /* Antec Veris Multimedia Station Premiere (IR & LCD) */
+ { USB_DEVICE(0x15c2, 0x0045) },
+ /* device specifics unknown */
+ { USB_DEVICE(0x15c2, 0x0046) },
+ {}
+};
+
+/* Some iMON VFD models requires a 6th packet for VFD writes */
+static struct usb_device_id vfd_proto_6p_list[] = {
+ { USB_DEVICE(0x15c2, 0xffda) },
+ { USB_DEVICE(0x15c2, 0xffdc) },
+ { USB_DEVICE(0x15c2, 0x0036) },
+ { USB_DEVICE(0x15c2, 0x0044) },
+ {}
+};
+
+/* newer iMON models use control endpoints */
+static struct usb_device_id ctl_ep_device_list[] = {
+ { USB_DEVICE(0x15c2, 0x0034) },
+ { USB_DEVICE(0x15c2, 0x0035) },
+ { USB_DEVICE(0x15c2, 0x0036) },
+ { USB_DEVICE(0x15c2, 0x0037) },
+ { USB_DEVICE(0x15c2, 0x0038) },
+ { USB_DEVICE(0x15c2, 0x0039) },
+ { USB_DEVICE(0x15c2, 0x003a) },
+ { USB_DEVICE(0x15c2, 0x003b) },
+ { USB_DEVICE(0x15c2, 0x003c) },
+ { USB_DEVICE(0x15c2, 0x003d) },
+ { USB_DEVICE(0x15c2, 0x003e) },
+ { USB_DEVICE(0x15c2, 0x003f) },
+ { USB_DEVICE(0x15c2, 0x0040) },
+ { USB_DEVICE(0x15c2, 0x0041) },
+ { USB_DEVICE(0x15c2, 0x0042) },
+ { USB_DEVICE(0x15c2, 0x0043) },
+ { USB_DEVICE(0x15c2, 0x0044) },
+ { USB_DEVICE(0x15c2, 0x0045) },
+ { USB_DEVICE(0x15c2, 0x0046) },
+ {}
+};
+
+/* iMON LCD models use a different write op */
+static struct usb_device_id lcd_device_list[] = {
+ { USB_DEVICE(0x15c2, 0xffdc) },
+ { USB_DEVICE(0x15c2, 0x0038) },
+ { USB_DEVICE(0x15c2, 0x0045) },
+ {}
+};
+
+/* iMON devices with front panel buttons or touchscreen need a larger buffer */
+static struct usb_device_id large_buffer_list[] = {
+ { USB_DEVICE(0x15c2, 0x0034) },
+ { USB_DEVICE(0x15c2, 0x0035) },
+ { USB_DEVICE(0x15c2, 0x0038) },
+ { USB_DEVICE(0x15c2, 0x0045) },
+};
+
+/* Newer iMON models decode the signal onboard */
+static struct usb_device_id ir_onboard_decode_list[] = {
+ { USB_DEVICE(0x15c2, 0xffdc) },
+ { USB_DEVICE(0x15c2, 0x0034) },
+ { USB_DEVICE(0x15c2, 0x0035) },
+ { USB_DEVICE(0x15c2, 0x0036) },
+ { USB_DEVICE(0x15c2, 0x0037) },
+ { USB_DEVICE(0x15c2, 0x0038) },
+ { USB_DEVICE(0x15c2, 0x0039) },
+ { USB_DEVICE(0x15c2, 0x003a) },
+ { USB_DEVICE(0x15c2, 0x003b) },
+ { USB_DEVICE(0x15c2, 0x003c) },
+ { USB_DEVICE(0x15c2, 0x003d) },
+ { USB_DEVICE(0x15c2, 0x003e) },
+ { USB_DEVICE(0x15c2, 0x003f) },
+ { USB_DEVICE(0x15c2, 0x0040) },
+ { USB_DEVICE(0x15c2, 0x0041) },
+ { USB_DEVICE(0x15c2, 0x0042) },
+ { USB_DEVICE(0x15c2, 0x0043) },
+ { USB_DEVICE(0x15c2, 0x0044) },
+ { USB_DEVICE(0x15c2, 0x0045) },
+ { USB_DEVICE(0x15c2, 0x0046) },
+ {}
+};
+
+/* Some iMON devices have no lcd/vfd, don't set one up */
+static struct usb_device_id ir_only_list[] = {
+ { USB_DEVICE(0x0aa8, 0x8001) },
+ { USB_DEVICE(0x04e8, 0xff30) },
+ /* the first imon lcd and the knob share this device id. :\ */
+ /*{ USB_DEVICE(0x15c2, 0xffdc) },*/
+ { USB_DEVICE(0x15c2, 0x003c) },
+ { USB_DEVICE(0x15c2, 0x0041) },
+ { USB_DEVICE(0x15c2, 0x0042) },
+ { USB_DEVICE(0x15c2, 0x0043) },
+ {}
+};
+
+/* iMON devices with VGA touchscreens */
+static struct usb_device_id imon_touchscreen_list[] = {
+ { USB_DEVICE(0x15c2, 0x0034) },
+ { USB_DEVICE(0x15c2, 0x0035) },
+ {}
+};
+
+/* USB Device data */
+static struct usb_driver imon_driver = {
+ .name = MOD_NAME,
+ .probe = imon_probe,
+ .disconnect = imon_disconnect,
+ .suspend = imon_suspend,
+ .resume = imon_resume,
+ .id_table = imon_usb_id_table,
+};
+
+static struct usb_class_driver imon_class = {
+ .name = DEVICE_NAME,
+ .fops = &display_fops,
+ .minor_base = DISPLAY_MINOR_BASE,
+};
+
+/* to prevent races between open() and disconnect(), probing, etc */
+static DEFINE_MUTEX(driver_lock);
+
+static int debug;
+
+/* lcd, vfd, vga or none? should be auto-detected, but can be overridden... */
+static int display_type;
+
+/* IR protocol: native iMON, Windows MCE (RC-6), or iMON w/o PAD stabilize */
+static int ir_protocol;
+
+/*
+ * In certain use cases, mouse mode isn't really helpful, and could actually
+ * cause confusion, so allow disabling it when the IR device is open.
+ */
+static int nomouse;
+
+/* threshold at which a pad push registers as an arrow key in kbd mode */
+static int pad_thresh;
+
+/* run onboard decode device in lirc mode rather than as pure input device */
+static int lirc_mode;
+
+/*** M O D U L E C O D E ***/
+
+MODULE_AUTHOR(MOD_AUTHOR);
+MODULE_AUTHOR(MOD_AUTHOR2);
+MODULE_DESCRIPTION(MOD_DESC);
+MODULE_VERSION(MOD_VERSION);
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(usb, imon_usb_id_table);
+module_param(debug, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug messages: 0=no, 1=yes(default: no)");
+module_param(display_type, int, S_IRUGO);
+MODULE_PARM_DESC(display_type, "Type of attached display. 0=autodetect, "
+ "1=vfd, 2=lcd, 3=vga, 4=none (default: autodetect)");
+module_param(ir_protocol, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(ir_protocol, "Which IR protocol to use. 0=native iMON, "
+ "1=Windows Media Center Ed. (RC-6), 2=iMON w/o PAD stabilize "
+ "(default: native iMON)");
+module_param(nomouse, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(nomouse, "Disable mouse input device mode when IR device is "
+ "open. 0=don't disable, 1=disable. (default: don't disable)");
+module_param(pad_thresh, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(pad_thresh, "Threshold at which a pad push registers as an "
+ "arrow key in kbd mode (default: 28)");
+module_param(lirc_mode, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(lirc_mode, "Run onboard decoding receiver in lirc mode rather "
+ "than as a pure input device");
+
+static void free_imon_context(struct imon_context *context)
+{
+ usb_free_urb(context->tx_urb);
+ usb_free_urb(context->rx_urb_intf0);
+ usb_free_urb(context->rx_urb_intf1);
+ lirc_buffer_free(context->driver->rbuf);
+ kfree(context->driver->rbuf);
+ kfree(context->driver);
+ kfree(context);
+
+ dev_dbg(context->driver->dev, "%s: iMON context freed\n", __func__);
+}
+
+static void deregister_from_lirc(struct imon_context *context)
+{
+ int retval;
+ int minor = context->driver->minor;
+
+ retval = lirc_unregister_driver(minor);
+ if (retval)
+ err("%s: unable to deregister from lirc(%d)",
+ __func__, retval);
+ else
+ printk(KERN_INFO MOD_NAME ": Deregistered iMON driver "
+ "(minor:%d)\n", minor);
+
+}
+
+/**
+ * Called when the Display device (e.g. /dev/lcd0)
+ * is opened by the application.
+ */
+static int display_open(struct inode *inode, struct file *file)
+{
+ struct usb_interface *interface;
+ struct imon_context *context = NULL;
+ int subminor;
+ int retval = 0;
+
+ /* prevent races with disconnect */
+ mutex_lock(&driver_lock);
+
+ subminor = iminor(inode);
+ interface = usb_find_interface(&imon_driver, subminor);
+ if (!interface) {
+ err("%s: could not find interface for minor %d",
+ __func__, subminor);
+ retval = -ENODEV;
+ goto exit;
+ }
+ context = usb_get_intfdata(interface);
+
+ if (!context) {
+ err("%s: no context found for minor %d",
+ __func__, subminor);
+ retval = -ENODEV;
+ goto exit;
+ }
+
+ mutex_lock(&context->lock);
+
+ if (!context->display_supported) {
+ err("%s: display not supported by device", __func__);
+ retval = -ENODEV;
+ } else if (context->display_isopen) {
+ err("%s: display port is already open", __func__);
+ retval = -EBUSY;
+ } else {
+ context->display_isopen = 1;
+ file->private_data = context;
+ dev_info(context->driver->dev, "display port opened\n");
+ }
+
+ mutex_unlock(&context->lock);
+
+exit:
+ mutex_unlock(&driver_lock);
+ return retval;
+}
+
+/**
+ * Called when the display device (e.g. /dev/lcd0)
+ * is closed by the application.
+ */
+static int display_close(struct inode *inode, struct file *file)
+{
+ struct imon_context *context = NULL;
+ int retval = 0;
+
+ context = (struct imon_context *)file->private_data;
+
+ if (!context) {
+ err("%s: no context for device", __func__);
+ return -ENODEV;
+ }
+
+ mutex_lock(&context->lock);
+
+ if (!context->display_supported) {
+ err("%s: display not supported by device", __func__);
+ retval = -ENODEV;
+ } else if (!context->display_isopen) {
+ err("%s: display is not open", __func__);
+ retval = -EIO;
+ } else {
+ context->display_isopen = 0;
+ dev_info(context->driver->dev, "display port closed\n");
+ if (!context->dev_present_intf0 && !context->ir_isopen) {
+ /*
+ * Device disconnected before close and IR port is not
+ * open. If IR port is open, context will be deleted by
+ * ir_close.
+ */
+ mutex_unlock(&context->lock);
+ free_imon_context(context);
+ return retval;
+ }
+ }
+
+ mutex_unlock(&context->lock);
+ return retval;
+}
+
+/**
+ * Sends a packet to the device -- this function must be called
+ * with context->lock held.
+ */
+static int send_packet(struct imon_context *context)
+{
+ unsigned int pipe;
+ int interval = 0;
+ int retval = 0;
+ struct usb_ctrlrequest *control_req = NULL;
+
+ /* Check if we need to use control or interrupt urb */
+ if (!context->tx_control) {
+ pipe = usb_sndintpipe(context->usbdev_intf0,
+ context->tx_endpoint->bEndpointAddress);
+ interval = context->tx_endpoint->bInterval;
+
+ usb_fill_int_urb(context->tx_urb, context->usbdev_intf0, pipe,
+ context->usb_tx_buf,
+ sizeof(context->usb_tx_buf),
+ usb_tx_callback, context, interval);
+
+ context->tx_urb->actual_length = 0;
+ } else {
+ /* fill request into kmalloc'ed space: */
+ control_req = kmalloc(sizeof(struct usb_ctrlrequest),
+ GFP_KERNEL);
+ if (control_req == NULL)
+ return -ENOMEM;
+
+ /* setup packet is '21 09 0200 0001 0008' */
+ control_req->bRequestType = 0x21;
+ control_req->bRequest = 0x09;
+ control_req->wValue = cpu_to_le16(0x0200);
+ control_req->wIndex = cpu_to_le16(0x0001);
+ control_req->wLength = cpu_to_le16(0x0008);
+
+ /* control pipe is endpoint 0x00 */
+ pipe = usb_sndctrlpipe(context->usbdev_intf0, 0);
+
+ /* build the control urb */
+ usb_fill_control_urb(context->tx_urb, context->usbdev_intf0,
+ pipe, (unsigned char *)control_req,
+ context->usb_tx_buf,
+ sizeof(context->usb_tx_buf),
+ usb_tx_callback, context);
+ context->tx_urb->actual_length = 0;
+ }
+
+ init_completion(&context->tx.finished);
+ atomic_set(&(context->tx.busy), 1);
+
+ retval = usb_submit_urb(context->tx_urb, GFP_KERNEL);
+ if (retval) {
+ atomic_set(&(context->tx.busy), 0);
+ err("%s: error submitting urb(%d)", __func__, retval);
+ } else {
+ /* Wait for transmission to complete (or abort) */
+ mutex_unlock(&context->lock);
+ retval = wait_for_completion_interruptible(
+ &context->tx.finished);
+ if (retval)
+ err("%s: task interrupted", __func__);
+ mutex_lock(&context->lock);
+
+ retval = context->tx.status;
+ if (retval)
+ err("%s: packet tx failed (%d)", __func__, retval);
+ }
+
+ kfree(control_req);
+
+ return retval;
+}
+
+/**
+ * Sends an associate packet to the iMON 2.4G.
+ *
+ * This might not be such a good idea, since it has an id collision with
+ * some versions of the "IR & VFD" combo. The only way to determine if it
+ * is an RF version is to look at the product description string. (Which
+ * we currently do not fetch).
+ */
+static int send_associate_24g(struct imon_context *context)
+{
+ int retval;
+ const unsigned char packet[8] = { 0x01, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x20 };
+
+ if (!context) {
+ err("%s: no context for device", __func__);
+ return -ENODEV;
+ }
+
+ if (!context->dev_present_intf0) {
+ err("%s: no iMON device present", __func__);
+ return -ENODEV;
+ }
+
+ memcpy(context->usb_tx_buf, packet, sizeof(packet));
+ retval = send_packet(context);
+
+ return retval;
+}
+
+/**
+ * Sends packets to setup and show clock on iMON display
+ *
+ * Arguments: year - last 2 digits of year, month - 1..12,
+ * day - 1..31, dow - day of the week (0-Sun...6-Sat),
+ * hour - 0..23, minute - 0..59, second - 0..59
+ */
+static int send_set_imon_clock(struct imon_context *context,
+ unsigned int year, unsigned int month,
+ unsigned int day, unsigned int dow,
+ unsigned int hour, unsigned int minute,
+ unsigned int second)
+{
+ unsigned char clock_enable_pkt[IMON_CLOCK_ENABLE_PACKETS][8];
+ int retval = 0;
+ int i;
+
+ if (!context) {
+ err("%s: no context for device", __func__);
+ return -ENODEV;
+ }
+
+ switch (context->display_type) {
+ case IMON_DISPLAY_TYPE_LCD:
+ clock_enable_pkt[0][0] = 0x80;
+ clock_enable_pkt[0][1] = year;
+ clock_enable_pkt[0][2] = month-1;
+ clock_enable_pkt[0][3] = day;
+ clock_enable_pkt[0][4] = hour;
+ clock_enable_pkt[0][5] = minute;
+ clock_enable_pkt[0][6] = second;
+
+ clock_enable_pkt[1][0] = 0x80;
+ clock_enable_pkt[1][1] = 0;
+ clock_enable_pkt[1][2] = 0;
+ clock_enable_pkt[1][3] = 0;
+ clock_enable_pkt[1][4] = 0;
+ clock_enable_pkt[1][5] = 0;
+ clock_enable_pkt[1][6] = 0;
+
+ if (context->ffdc_dev) {
+ clock_enable_pkt[0][7] = 0x50;
+ clock_enable_pkt[1][7] = 0x51;
+ } else {
+ clock_enable_pkt[0][7] = 0x88;
+ clock_enable_pkt[1][7] = 0x8a;
+ }
+
+ break;
+
+ case IMON_DISPLAY_TYPE_VFD:
+ clock_enable_pkt[0][0] = year;
+ clock_enable_pkt[0][1] = month-1;
+ clock_enable_pkt[0][2] = day;
+ clock_enable_pkt[0][3] = dow;
+ clock_enable_pkt[0][4] = hour;
+ clock_enable_pkt[0][5] = minute;
+ clock_enable_pkt[0][6] = second;
+ clock_enable_pkt[0][7] = 0x40;
+
+ clock_enable_pkt[1][0] = 0;
+ clock_enable_pkt[1][1] = 0;
+ clock_enable_pkt[1][2] = 1;
+ clock_enable_pkt[1][3] = 0;
+ clock_enable_pkt[1][4] = 0;
+ clock_enable_pkt[1][5] = 0;
+ clock_enable_pkt[1][6] = 0;
+ clock_enable_pkt[1][7] = 0x42;
+
+ break;
+
+ default:
+ return -ENODEV;
+ }
+
+ for (i = 0; i < IMON_CLOCK_ENABLE_PACKETS; i++) {
+ memcpy(context->usb_tx_buf, clock_enable_pkt[i], 8);
+ retval = send_packet(context);
+ if (retval) {
+ err("%s: send_packet failed for packet %d",
+ __func__, i);
+ break;
+ }
+ }
+
+ return retval;
+}
+
+/**
+ * These are the sysfs functions to handle the association on the iMON 2.4G LT.
+ */
+static ssize_t show_associate_remote(struct device *d,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct imon_context *context = dev_get_drvdata(d);
+
+ if (!context)
+ return -ENODEV;
+
+ mutex_lock(&context->lock);
+ if (context->ir_isassociating)
+ strcpy(buf, "associating\n");
+ else if (context->ir_isopen)
+ strcpy(buf, "open\n");
+ else
+ strcpy(buf, "closed\n");
+
+ dev_info(d, "Visit http://www.lirc.org/html/imon-24g.html for "
+ "instructions on how to associate your iMON 2.4G DT/LT "
+ "remote\n");
+ mutex_unlock(&context->lock);
+ return strlen(buf);
+}
+
+static ssize_t store_associate_remote(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct imon_context *context;
+
+ context = dev_get_drvdata(d);
+
+ if (!context)
+ return -ENODEV;
+
+ mutex_lock(&context->lock);
+ if (!context->ir_isopen) {
+ mutex_unlock(&context->lock);
+ return -EINVAL;
+ }
+
+ if (context->ir_isopen) {
+ context->ir_isassociating = 1;
+ send_associate_24g(context);
+ }
+ mutex_unlock(&context->lock);
+
+ return count;
+}
+
+/**
+ * sysfs functions to control internal imon clock
+ */
+static ssize_t show_imon_clock(struct device *d,
+ struct device_attribute *attr, char *buf)
+{
+ struct imon_context *context = dev_get_drvdata(d);
+ size_t len;
+
+ if (!context)
+ return -ENODEV;
+
+ mutex_lock(&context->lock);
+
+ if (!context->display_supported) {
+ len = snprintf(buf, PAGE_SIZE, "Not supported.");
+ } else {
+ len = snprintf(buf, PAGE_SIZE,
+ "To set the clock on your iMON display:\n"
+ "# date \"+%%y %%m %%d %%w %%H %%M %%S\" > imon_clock\n"
+ "%s", context->display_isopen ?
+ "\nNOTE: imon device must be closed\n" : "");
+ }
+
+ mutex_unlock(&context->lock);
+
+ return len;
+}
+
+static ssize_t store_imon_clock(struct device *d,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct imon_context *context = dev_get_drvdata(d);
+ ssize_t retval;
+ unsigned int year, month, day, dow, hour, minute, second;
+
+ if (!context)
+ return -ENODEV;
+
+ mutex_lock(&context->lock);
+
+ if (!context->display_supported) {
+ retval = -ENODEV;
+ goto exit;
+ } else if (context->display_isopen) {
+ retval = -EBUSY;
+ goto exit;
+ }
+
+ if (sscanf(buf, "%u %u %u %u %u %u %u", &year, &month, &day, &dow,
+ &hour, &minute, &second) != 7) {
+ retval = -EINVAL;
+ goto exit;
+ }
+
+ if ((month < 1 || month > 12) ||
+ (day < 1 || day > 31) || (dow > 6) ||
+ (hour > 23) || (minute > 59) || (second > 59)) {
+ retval = -EINVAL;
+ goto exit;
+ }
+
+ retval = send_set_imon_clock(context, year, month, day, dow,
+ hour, minute, second);
+ if (retval)
+ goto exit;
+
+ retval = count;
+exit:
+ mutex_unlock(&context->lock);
+
+ return retval;
+}
+
+
+static DEVICE_ATTR(imon_clock, S_IWUSR | S_IRUGO, show_imon_clock,
+ store_imon_clock);
+
+static DEVICE_ATTR(associate_remote, S_IWUSR | S_IRUGO, show_associate_remote,
+ store_associate_remote);
+
+static struct attribute *imon_display_sysfs_entries[] = {
+ &dev_attr_imon_clock.attr,
+ NULL
+};
+
+static struct attribute_group imon_display_attribute_group = {
+ .attrs = imon_display_sysfs_entries
+};
+
+static struct attribute *imon_rf_sysfs_entries[] = {
+ &dev_attr_associate_remote.attr,
+ NULL
+};
+
+static struct attribute_group imon_rf_attribute_group = {
+ .attrs = imon_rf_sysfs_entries
+};
+
+/**
+ * Writes data to the VFD. The iMON VFD is 2x16 characters
+ * and requires data in 5 consecutive USB interrupt packets,
+ * each packet but the last carrying 7 bytes.
+ *
+ * I don't know if the VFD board supports features such as
+ * scrolling, clearing rows, blanking, etc. so at
+ * the caller must provide a full screen of data. If fewer
+ * than 32 bytes are provided spaces will be appended to
+ * generate a full screen.
+ */
+static ssize_t vfd_write(struct file *file, const char *buf,
+ size_t n_bytes, loff_t *pos)
+{
+ int i;
+ int offset;
+ int seq;
+ int retval = 0;
+ struct imon_context *context;
+ const unsigned char vfd_packet6[] = {
+ 0x01, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF };
+
+ context = (struct imon_context *)file->private_data;
+ if (!context) {
+ err("%s: no context for device", __func__);
+ return -ENODEV;
+ }
+
+ mutex_lock(&context->lock);
+
+ if (!context->dev_present_intf0) {
+ err("%s: no iMON device present", __func__);
+ retval = -ENODEV;
+ goto exit;
+ }
+
+ if (n_bytes <= 0 || n_bytes > 32) {
+ err("%s: invalid payload size", __func__);
+ retval = -EINVAL;
+ goto exit;
+ }
+
+ if (copy_from_user(context->tx.data_buf, buf, n_bytes)) {
+ retval = -EFAULT;
+ goto exit;
+ }
+
+ /* Pad with spaces */
+ for (i = n_bytes; i < 32; ++i)
+ context->tx.data_buf[i] = ' ';
+
+ for (i = 32; i < 35; ++i)
+ context->tx.data_buf[i] = 0xFF;
+
+ offset = 0;
+ seq = 0;
+
+ do {
+ memcpy(context->usb_tx_buf, context->tx.data_buf + offset, 7);
+ context->usb_tx_buf[7] = (unsigned char) seq;
+
+ retval = send_packet(context);
+ if (retval) {
+ err("%s: send packet failed for packet #%d",
+ __func__, seq/2);
+ goto exit;
+ } else {
+ seq += 2;
+ offset += 7;
+ }
+
+ } while (offset < 35);
+
+ if (context->vfd_proto_6p) {
+ /* Send packet #6 */
+ memcpy(context->usb_tx_buf, &vfd_packet6, sizeof(vfd_packet6));
+ context->usb_tx_buf[7] = (unsigned char) seq;
+ retval = send_packet(context);
+ if (retval)
+ err("%s: send packet failed for packet #%d",
+ __func__, seq/2);
+ }
+
+exit:
+ mutex_unlock(&context->lock);
+
+ return (!retval) ? n_bytes : retval;
+}
+
+/**
+ * Writes data to the LCD. The iMON OEM LCD screen excepts 8-byte
+ * packets. We accept data as 16 hexadecimal digits, followed by a
+ * newline (to make it easy to drive the device from a command-line
+ * -- even though the actual binary data is a bit complicated).
+ *
+ * The device itself is not a "traditional" text-mode display. It's
+ * actually a 16x96 pixel bitmap display. That means if you want to
+ * display text, you've got to have your own "font" and translate the
+ * text into bitmaps for display. This is really flexible (you can
+ * display whatever diacritics you need, and so on), but it's also
+ * a lot more complicated than most LCDs...
+ */
+static ssize_t lcd_write(struct file *file, const char *buf,
+ size_t n_bytes, loff_t *pos)
+{
+ int retval = 0;
+ struct imon_context *context;
+
+ context = (struct imon_context *)file->private_data;
+ if (!context) {
+ err("%s: no context for device", __func__);
+ return -ENODEV;
+ }
+
+ mutex_lock(&context->lock);
+
+ if (!context->display_supported) {
+ err("%s: no iMON display present", __func__);
+ retval = -ENODEV;
+ goto exit;
+ }
+
+ if (n_bytes != 8) {
+ err("%s: invalid payload size: %d (expecting 8)",
+ __func__, (int) n_bytes);
+ retval = -EINVAL;
+ goto exit;
+ }
+
+ if (copy_from_user(context->usb_tx_buf, buf, 8)) {
+ retval = -EFAULT;
+ goto exit;
+ }
+
+ retval = send_packet(context);
+ if (retval) {
+ err("%s: send packet failed!", __func__);
+ goto exit;
+ } else {
+ dev_dbg(context->driver->dev, "%s: write %d bytes to LCD\n",
+ __func__, (int) n_bytes);
+ }
+exit:
+ mutex_unlock(&context->lock);
+ return (!retval) ? n_bytes : retval;
+}
+
+/**
+ * Callback function for USB core API: transmit data
+ */
+static void usb_tx_callback(struct urb *urb)
+{
+ struct imon_context *context;
+
+ if (!urb)
+ return;
+ context = (struct imon_context *)urb->context;
+ if (!context)
+ return;
+
+ context->tx.status = urb->status;
+
+ /* notify waiters that write has finished */
+ atomic_set(&context->tx.busy, 0);
+ complete(&context->tx.finished);
+
+ return;
+}
+
+/**
+ * iMON IR receivers support two different signal sets -- those used by
+ * the iMON remotes, and those used by the Windows MCE remotes (which is
+ * really just RC-6), but only one or the other at a time, as the signals
+ * are decoded onboard the receiver.
+ */
+static void imon_set_ir_protocol(struct imon_context *context)
+{
+ int retval;
+ struct device *dev = context->driver->dev;
+ unsigned char ir_proto_packet[] =
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x86 };
+
+ switch (ir_protocol) {
+ case IMON_IR_PROTOCOL_MCE:
+ /* MCE proto not supported on devices without tx control */
+ if (!context->tx_control) {
+ dev_info(dev, "%s: MCE IR proto not supported on this "
+ "device, using iMON protocol\n", __func__);
+ context->ir_protocol = IMON_IR_PROTOCOL_IMON;
+ return;
+ }
+ dev_dbg(dev, "Configuring IR receiver for MCE protocol\n");
+ ir_proto_packet[0] = 0x01;
+ context->ir_protocol = IMON_IR_PROTOCOL_MCE;
+ break;
+ case IMON_IR_PROTOCOL_IMON:
+ dev_dbg(dev, "Configuring IR receiver for iMON protocol\n");
+ /* ir_proto_packet[0] = 0x00; // already the default */
+ context->ir_protocol = IMON_IR_PROTOCOL_IMON;
+ break;
+ case IMON_IR_PROTOCOL_IMON_NOPAD:
+ dev_dbg(dev, "Configuring IR receiver for iMON protocol "
+ "without PAD stabilize function enabled\n");
+ /* ir_proto_packet[0] = 0x00; // already the default */
+ context->ir_protocol = IMON_IR_PROTOCOL_IMON_NOPAD;
+ break;
+ default:
+ dev_info(dev, "%s: unknown IR protocol specified, will "
+ "just default to iMON protocol\n", __func__);
+ context->ir_protocol = IMON_IR_PROTOCOL_IMON;
+ break;
+ }
+
+ /* Don't send config packet on devices w/o tx ctrl ep */
+ if (!context->tx_control)
+ return;
+
+ memcpy(context->usb_tx_buf, &ir_proto_packet, sizeof(ir_proto_packet));
+ retval = send_packet(context);
+ if (retval)
+ dev_info(dev, "%s: failed to set remote type\n", __func__);
+}
+
+
+/**
+ * Called by lirc_dev when the application opens /dev/lirc
+ */
+static int ir_open(void *data)
+{
+ int retval = 0;
+ struct imon_context *context;
+
+ /* prevent races with disconnect */
+ mutex_lock(&driver_lock);
+
+ context = (struct imon_context *)data;
+
+ /* initial IR protocol decode variables */
+ context->rx.count = 0;
+ context->rx.initial_space = 1;
+ context->rx.prev_bit = 0;
+
+ /* set new IR protocol if it has changed since init or last open */
+ if (ir_protocol != context->ir_protocol) {
+ mutex_lock(&context->lock);
+ imon_set_ir_protocol(context);
+ mutex_unlock(&context->lock);
+ }
+
+ context->ir_isopen = 1;
+ dev_info(context->driver->dev, "IR port opened\n");
+
+ mutex_unlock(&driver_lock);
+ return retval;
+}
+
+/**
+ * Called by lirc_dev when the application closes /dev/lirc
+ */
+static void ir_close(void *data)
+{
+ struct imon_context *context;
+
+ context = (struct imon_context *)data;
+ if (!context) {
+ err("%s: no context for device", __func__);
+ return;
+ }
+
+ mutex_lock(&context->lock);
+
+ context->ir_isopen = 0;
+ context->ir_isassociating = 0;
+ dev_info(context->driver->dev, "IR port closed\n");
+
+ if (!context->dev_present_intf0) {
+ /*
+ * Device disconnected while IR port was still open. Driver
+ * was not deregistered at disconnect time, so do it now.
+ */
+ deregister_from_lirc(context);
+
+ if (!context->display_isopen) {
+ mutex_unlock(&context->lock);
+ free_imon_context(context);
+ return;
+ }
+ /*
+ * If display port is open, context will be deleted by
+ * display_close
+ */
+ }
+
+ mutex_unlock(&context->lock);
+ return;
+}
+
+/**
+ * Convert bit count to time duration (in us) and submit
+ * the value to lirc_dev.
+ */
+static void submit_data(struct imon_context *context)
+{
+ unsigned char buf[4];
+ int value = context->rx.count;
+ int i;
+
+ dev_dbg(context->driver->dev, "submitting data to LIRC\n");
+
+ value *= BIT_DURATION;
+ value &= PULSE_MASK;
+ if (context->rx.prev_bit)
+ value |= PULSE_BIT;
+
+ for (i = 0; i < 4; ++i)
+ buf[i] = value>>(i*8);
+
+ lirc_buffer_write(context->driver->rbuf, buf);
+ wake_up(&context->driver->rbuf->wait_poll);
+ return;
+}
+
+static inline int tv2int(const struct timeval *a, const struct timeval *b)
+{
+ int usecs = 0;
+ int sec = 0;
+
+ if (b->tv_usec > a->tv_usec) {
+ usecs = 1000000;
+ sec--;
+ }
+
+ usecs += a->tv_usec - b->tv_usec;
+
+ sec += a->tv_sec - b->tv_sec;
+ sec *= 1000;
+ usecs /= 1000;
+ sec += usecs;
+
+ if (sec < 0)
+ sec = 1000;
+
+ return sec;
+}
+
+/**
+ * The directional pad behaves a bit differently, depending on whether this is
+ * one of the older ffdc devices or a newer device. Newer devices appear to
+ * have a higher resolution matrix for more precise mouse movement, but it
+ * makes things overly sensitive in keyboard mode, so we do some interesting
+ * contortions to make it less touchy. Older devices run through the same
+ * routine with shorter timeout and a smaller threshold.
+ */
+static int stabilize(int a, int b, u16 timeout, u16 threshold)
+{
+ struct timeval ct;
+ static struct timeval prev_time = {0, 0};
+ static struct timeval hit_time = {0, 0};
+ static int x, y, prev_result, hits;
+ int result = 0;
+ int msec, msec_hit;
+
+ do_gettimeofday(&ct);
+ msec = tv2int(&ct, &prev_time);
+ msec_hit = tv2int(&ct, &hit_time);
+
+ if (msec > 100) {
+ x = 0;
+ y = 0;
+ hits = 0;
+ }
+
+ x += a;
+ y += b;
+
+ prev_time = ct;
+
+ if (abs(x) > threshold || abs(y) > threshold) {
+ if (abs(y) > abs(x))
+ result = (y > 0) ? 0x7F : 0x80;
+ else
+ result = (x > 0) ? 0x7F00 : 0x8000;
+
+ x = 0;
+ y = 0;
+
+ if (result == prev_result) {
+ hits++;
+
+ if (hits > 3) {
+ switch (result) {
+ case 0x7F:
+ y = 17 * threshold / 30;
+ break;
+ case 0x80:
+ y -= 17 * threshold / 30;
+ break;
+ case 0x7F00:
+ x = 17 * threshold / 30;
+ break;
+ case 0x8000:
+ x -= 17 * threshold / 30;
+ break;
+ }
+ }
+
+ if (hits == 2 && msec_hit < timeout) {
+ result = 0;
+ hits = 1;
+ }
+ } else {
+ prev_result = result;
+ hits = 1;
+ hit_time = ct;
+ }
+ }
+
+ return result;
+}
+
+static int imon_remote_key_lookup(u32 hw_code)
+{
+ int i;
+ u32 code = be32_to_cpu(hw_code);
+
+ /* Look for the initial press of a button */
+ for (i = 0; i < ARRAY_SIZE(imon_remote_key_table); i++)
+ if (imon_remote_key_table[i].hw_code == code)
+ return i;
+
+ /* Look for the release of a button */
+ for (i = 0; i < ARRAY_SIZE(imon_remote_key_table); i++)
+ if ((imon_remote_key_table[i].hw_code | 0x4000) == code)
+ return i;
+
+ return -1;
+}
+
+static int imon_mce_key_lookup(u32 hw_code)
+{
+ int i;
+ u32 code = be32_to_cpu(hw_code);
+
+ for (i = 0; i < ARRAY_SIZE(imon_mce_key_table); i++)
+ if (imon_mce_key_table[i].hw_code == code)
+ return i;
+
+ for (i = 0; i < ARRAY_SIZE(imon_mce_key_table); i++)
+ if (imon_mce_key_table[i].hw_code == (code | 0x8000))
+ return i;
+
+ return -1;
+}
+
+static int imon_panel_key_lookup(u64 hw_code)
+{
+ int i;
+ u64 code = be64_to_cpu(hw_code);
+
+ for (i = 0; i < ARRAY_SIZE(imon_panel_key_table); i++)
+ if (imon_panel_key_table[i].hw_code == (code | 0xfee))
+ return i;
+
+ return -1;
+}
+
+/**
+ * Process the incoming packet
+ */
+static void imon_incoming_packet(struct imon_context *context,
+ struct urb *urb, int intf)
+{
+ int len = urb->actual_length;
+ unsigned char *buf = urb->transfer_buffer;
+ struct device *dev = context->driver->dev;
+ char rel_x = 0x00, rel_y = 0x00;
+ int octet, bit;
+ unsigned char mask;
+ int i, chunk_num;
+ int ts_input = 0;
+ int dir = 0;
+ u16 timeout, threshold;
+ u16 keycode;
+ u16 norelease = 0;
+ int k;
+ u32 remote_key = 0;
+ u64 panel_key = 0;
+ int mouse_input;
+ int right_shift = 1;
+ struct input_dev *idev = NULL;
+ struct input_dev *touch = NULL;
+
+ idev = context->idev;
+ if (context->display_type == IMON_DISPLAY_TYPE_VGA)
+ touch = context->touch;
+
+ /* Figure out what key was pressed */
+ if (len == 8 && buf[7] == 0xee) {
+ memcpy(&panel_key, buf, len);
+ k = imon_panel_key_lookup(panel_key);
+ keycode = imon_panel_key_table[k].keycode;
+ } else {
+ memcpy(&remote_key, buf, sizeof(remote_key));
+ if (context->ir_protocol == IMON_IR_PROTOCOL_MCE) {
+ k = imon_mce_key_lookup(remote_key);
+ keycode = imon_mce_key_table[k].keycode;
+ } else {
+ k = imon_remote_key_lookup(remote_key);
+ keycode = imon_remote_key_table[k].keycode;
+ }
+ }
+
+ /* keyboard/mouse mode toggle button */
+ if (keycode == KEY_KEYBOARD && (buf[2] & 0x40) != 0x40) {
+ if (!nomouse) {
+ context->pad_mouse = ~(context->pad_mouse) & 0x1;
+ dev_dbg(dev, "toggling to %s mode\n",
+ context->pad_mouse ? "mouse" : "keyboard");
+ } else {
+ context->pad_mouse = 0;
+ dev_dbg(dev, "mouse mode was disabled by modparam\n");
+ }
+ context->last_keycode = keycode;
+ return;
+ }
+
+ /* send touchscreen events through input subsystem if touchpad data */
+ if (context->display_type == IMON_DISPLAY_TYPE_VGA && len == 8 &&
+ buf[7] == 0x86) {
+ if (touch == NULL) {
+ dev_warn(dev, "%s: touchscreen input device is "
+ "NULL!\n", __func__);
+ return;
+ }
+ mod_timer(&context->timer, jiffies + TOUCH_TIMEOUT);
+ context->touch_x = (buf[0] << 4) | (buf[1] >> 4);
+ context->touch_y = 0xfff - ((buf[2] << 4) | (buf[1] & 0xf));
+ input_report_abs(touch, ABS_X, context->touch_x);
+ input_report_abs(touch, ABS_Y, context->touch_y);
+ input_report_key(touch, BTN_TOUCH, 0x01);
+ input_sync(touch);
+ ts_input = 1;
+
+ /* send mouse events through input subsystem in mouse mode */
+ } else if (context->pad_mouse || (!context->ir_isopen && lirc_mode)) {
+ /* newer iMON device PAD or mouse button */
+ if (!context->ffdc_dev && (buf[0] & 0x01) && len == 5) {
+ mouse_input = 1;
+ rel_x = buf[2];
+ rel_y = buf[3];
+ right_shift = 1;
+ /* 0xffdc iMON PAD or mouse button input */
+ } else if (context->ffdc_dev && (buf[0] & 0x40) &&
+ !((buf[1] & 0x01) || ((buf[1] >> 2) & 0x01))) {
+ mouse_input = 1;
+ rel_x = (buf[1] & 0x08) | (buf[1] & 0x10) >> 2 |
+ (buf[1] & 0x20) >> 4 | (buf[1] & 0x40) >> 6;
+ if (buf[0] & 0x02)
+ rel_x |= ~0x0f;
+ rel_x = rel_x + rel_x / 2;
+ rel_y = (buf[2] & 0x08) | (buf[2] & 0x10) >> 2 |
+ (buf[2] & 0x20) >> 4 | (buf[2] & 0x40) >> 6;
+ if (buf[0] & 0x01)
+ rel_y |= ~0x0f;
+ rel_y = rel_y + rel_y / 2;
+ right_shift = 2;
+ /* some ffdc devices decode mouse buttons differently... */
+ } else if (context->ffdc_dev && (buf[0] == 0x68)) {
+ mouse_input = 1;
+ right_shift = 2;
+ /* ch+/- buttons, which we use for an emulated scroll wheel */
+ } else if (keycode == KEY_CHANNELUP &&
+ (buf[2] & 0x40) != 0x40) {
+ mouse_input = 1;
+ dir = 1;
+ } else if (keycode == KEY_CHANNELDOWN &&
+ (buf[2] & 0x40) != 0x40) {
+ mouse_input = 1;
+ dir = -1;
+ } else
+ mouse_input = 0;
+
+ if (mouse_input) {
+ if (idev == NULL) {
+ dev_warn(dev, "%s: idev input device "
+ "is NULL!\n", __func__);
+ return;
+ }
+ dev_dbg(context->driver->dev,
+ "sending mouse data via input subsystem\n");
+
+ if (dir) {
+ input_report_rel(idev, REL_WHEEL, dir);
+ } else if (rel_x || rel_y) {
+ input_report_rel(idev, REL_X, rel_x);
+ input_report_rel(idev, REL_Y, rel_y);
+ } else {
+ input_report_key(idev, BTN_LEFT, buf[1] & 0x1);
+ input_report_key(idev, BTN_RIGHT,
+ buf[1] >> right_shift & 0x1);
+ }
+ input_sync(idev);
+ context->last_keycode = keycode;
+ return;
+ }
+ }
+
+ /*
+ * at this point, mouse and touchscreen input has been handled
+ * handled, so if we're in lirc mode, bail out if no listening
+ * IR client
+ */
+ if (!context->ir_isopen && lirc_mode)
+ return;
+
+ /* Now for some special handling to convert pad input to arrow keys */
+ if ((len == 5) && (buf[0] == 0x01) && (buf[4] == 0x00)) {
+ /* first, pad to 8 bytes so it conforms with everything else */
+ buf[5] = buf[6] = buf[7] = 0;
+ len = 8;
+ timeout = 500; /* in msecs */
+ /* (2*threshold) x (2*threshold) square */
+ threshold = pad_thresh ? pad_thresh : 28;
+ rel_x = buf[2];
+ rel_y = buf[3];
+
+ /*
+ * the imon directional pad functions more like a touchpad.
+ * Bytes 3 & 4 contain a position coordinate (x,y), with each
+ * component ranging from -14 to 14. Since this doesn't
+ * cooperate well with the way lirc works (it would appear to
+ * lirc as more than 100 different buttons) we need to map it
+ * to 4 discrete values. Also, when you get too close to
+ * diagonals, it has a tendancy to jump back and forth, so lets
+ * try to ignore when they get too close
+ */
+ if (context->ir_protocol == IMON_IR_PROTOCOL_IMON) {
+ if ((buf[1] == 0) && ((rel_x != 0) || (rel_y != 0))) {
+ dir = stabilize((int)rel_x, (int)rel_y,
+ timeout, threshold);
+ if (!dir)
+ return;
+ buf[2] = dir & 0xFF;
+ buf[3] = (dir >> 8) & 0xFF;
+ memcpy(&remote_key, buf, sizeof(remote_key));
+ k = imon_remote_key_lookup(remote_key);
+ keycode = imon_remote_key_table[k].keycode;
+ }
+ } else {
+ if (abs(rel_y) > abs(rel_x)) {
+ buf[2] = (rel_y > 0) ? 0x7F : 0x80;
+ buf[3] = 0;
+ keycode = (rel_y > 0) ? KEY_DOWN : KEY_UP;
+ } else {
+ buf[2] = 0;
+ buf[3] = (rel_x > 0) ? 0x7F : 0x80;
+ keycode = (rel_x > 0) ? KEY_RIGHT : KEY_LEFT;
+ }
+ }
+ norelease = 1;
+
+ } else if ((len == 8) && (buf[0] & 0x40) &&
+ !(buf[1] & 0x01 || buf[1] >> 2 & 0x01)) {
+ /*
+ * Handle on-board decoded pad events for e.g. older
+ * VFD/iMON-Pad (15c2:ffdc). The remote generates various codes
+ * from 0x68nnnnB7 to 0x6AnnnnB7, the left mouse button
+ * generates 0x688301b7 and the right one 0x688481b7. All other
+ * keys generate 0x2nnnnnnn. Length has been padded to 8
+ * already, position coordinate is encoded in buf[1] and buf[2]
+ * with reversed endianess. Extract direction from buffer,
+ * rotate endianess, adjust sign and feed the values into
+ * stabilize(). The resulting codes will be 0x01008000,
+ * 0x01007F00, ..., so one can use the normal imon-pad config
+ * from the remotes dir.
+ */
+ timeout = 10; /* in msecs */
+ /* (2*threshold) x (2*threshold) square */
+ threshold = pad_thresh ? pad_thresh : 15;
+
+ /* buf[1] is x */
+ rel_x = (buf[1] & 0x08) | (buf[1] & 0x10) >> 2 |
+ (buf[1] & 0x20) >> 4 | (buf[1] & 0x40) >> 6;
+ if (buf[0] & 0x02)
+ rel_x |= ~0x10+1;
+ /* buf[2] is y */
+ rel_y = (buf[2] & 0x08) | (buf[2] & 0x10) >> 2 |
+ (buf[2] & 0x20) >> 4 | (buf[2] & 0x40) >> 6;
+ if (buf[0] & 0x01)
+ rel_y |= ~0x10+1;
+
+ buf[0] = 0x01;
+ buf[1] = buf[4] = buf[5] = buf[6] = buf[7] = 0;
+
+ if (context->ir_protocol == IMON_IR_PROTOCOL_IMON) {
+ dir = stabilize((int)rel_x, (int)rel_y,
+ timeout, threshold);
+ if (!dir)
+ return;
+ buf[2] = dir & 0xFF;
+ buf[3] = (dir >> 8) & 0xFF;
+ } else {
+ if (abs(rel_y) > abs(rel_x)) {
+ buf[2] = (rel_y > 0) ? 0x7F : 0x80;
+ buf[3] = 0;
+ keycode = (rel_y > 0) ? KEY_DOWN : KEY_UP;
+ } else {
+ buf[2] = 0;
+ buf[3] = (rel_x > 0) ? 0x7F : 0x80;
+ keycode = (rel_x > 0) ? KEY_RIGHT : KEY_LEFT;
+ }
+ }
+ norelease = 1;
+
+ } else if (ts_input) {
+ /*
+ * this is touchscreen input, which we need to down-sample
+ * to a 64 button matrix at the moment...
+ */
+ buf[0] = buf[0] >> 5;
+ buf[1] = 0x00;
+ buf[2] = buf[2] >> 5;
+ buf[3] = 0x00;
+ buf[4] = 0x00;
+ buf[5] = 0x00;
+ buf[6] = 0x14;
+ buf[7] = 0xff;
+ }
+
+ if (!lirc_mode && context->ir_onboard_decode) {
+ int press_type = 0;
+ static int seen_first;
+ int msec;
+ struct timeval t;
+ static struct timeval prev_time = { 0, 0 };
+ if (debug) {
+ printk(KERN_INFO "intf%d decoded packet: ", intf);
+ for (i = 0; i < len; ++i)
+ printk("%02x ", buf[i]);
+ printk("\n");
+ }
+
+ /* key release of 0x02XXXXXX key */
+ if (k == -1 && buf[0] == 0x02 && buf[3] == 0x00)
+ keycode = context->last_keycode;
+
+ /* initial mce button press */
+ else if (ir_protocol == IMON_IR_PROTOCOL_MCE && buf[0] == 0x80
+ && buf[2] != context->last_mce_byte)
+ goto input_out;
+
+ /* subsequent mce button press, on which we'll act */
+ else if (ir_protocol == IMON_IR_PROTOCOL_MCE && buf[0] == 0x80
+ && seen_first) {
+ press_type = 1;
+ norelease = 1;
+
+ /* incoherent or irrelevant data */
+ } else if (k == -1)
+ return;
+
+ /* key release of 0xXXXXXXb7 key */
+ else if (buf[3] == 0xb7 && (buf[2] & 0x40) == 0x40)
+ press_type = 0;
+
+ /* this is a button press */
+ else
+ press_type = 1;
+
+ /* KEY_MUTE repeats need to be suppressed */
+ if (keycode == KEY_MUTE && context->last_keycode == KEY_MUTE) {
+ do_gettimeofday(&t);
+ msec = tv2int(&t, &prev_time);
+ prev_time = t;
+ if (msec < 500)
+ return;
+ }
+
+ input_report_key(idev, keycode, press_type);
+ input_sync(idev);
+
+ /* panel keys and some remote keys don't generate a release */
+ if (panel_key || norelease) {
+ input_report_key(idev, keycode, 0);
+ input_sync(idev);
+ }
+
+input_out:
+ context->last_keycode = keycode;
+ if (ir_protocol == IMON_IR_PROTOCOL_MCE && buf[0] == 0x80) {
+ seen_first = ~seen_first & 0x1;
+ context->last_mce_byte = buf[2];
+ }
+ return;
+ }
+
+ if (len != 8) {
+ dev_warn(dev, "imon %s: invalid incoming packet "
+ "size (len = %d, intf%d)\n", __func__, len, intf);
+ return;
+ }
+
+ /* iMON 2.4G associate frame */
+ if (buf[0] == 0x00 &&
+ buf[2] == 0xFF && /* REFID */
+ buf[3] == 0xFF &&
+ buf[4] == 0xFF &&
+ buf[5] == 0xFF && /* iMON 2.4G */
+ ((buf[6] == 0x4E && buf[7] == 0xDF) || /* LT */
+ (buf[6] == 0x5E && buf[7] == 0xDF))) { /* DT */
+ dev_warn(dev, "%s: remote associated refid=%02X\n",
+ __func__, buf[1]);
+ context->ir_isassociating = 0;
+ }
+
+ chunk_num = buf[7];
+
+ if (chunk_num == 0xFF && !ts_input)
+ return; /* filler frame, no data here */
+
+ if (buf[0] == 0xFF &&
+ buf[1] == 0xFF &&
+ buf[2] == 0xFF &&
+ buf[3] == 0xFF &&
+ buf[4] == 0xFF &&
+ buf[5] == 0xFF && /* iMON 2.4G */
+ ((buf[6] == 0x4E && buf[7] == 0xAF) || /* LT */
+ (buf[6] == 0x5E && buf[7] == 0xAF))) /* DT */
+ return; /* filler frame, no data here */
+
+ if (debug) {
+ if (context->ir_onboard_decode)
+ printk(KERN_INFO "intf%d decoded packet: ", intf);
+ else
+ printk(KERN_INFO "raw packet: ");
+ for (i = 0; i < len; ++i)
+ printk("%02x ", buf[i]);
+ printk("\n");
+ }
+
+ if (context->ir_onboard_decode) {
+ /* The signals have been decoded onboard the iMON controller */
+ lirc_buffer_write(context->driver->rbuf, buf);
+ wake_up(&context->driver->rbuf->wait_poll);
+ return;
+ }
+
+ /*
+ * Translate received data to pulse and space lengths.
+ * Received data is active low, i.e. pulses are 0 and
+ * spaces are 1.
+ *
+ * My original algorithm was essentially similar to
+ * Changwoo Ryu's with the exception that he switched
+ * the incoming bits to active high and also fed an
+ * initial space to LIRC at the start of a new sequence
+ * if the previous bit was a pulse.
+ *
+ * I've decided to adopt his algorithm.
+ */
+
+ if (chunk_num == 1 && context->rx.initial_space) {
+ /* LIRC requires a leading space */
+ context->rx.prev_bit = 0;
+ context->rx.count = 4;
+ submit_data(context);
+ context->rx.count = 0;
+ }
+
+ for (octet = 0; octet < 5; ++octet) {
+ mask = 0x80;
+ for (bit = 0; bit < 8; ++bit) {
+ int curr_bit = !(buf[octet] & mask);
+ if (curr_bit != context->rx.prev_bit) {
+ if (context->rx.count) {
+ submit_data(context);
+ context->rx.count = 0;
+ }
+ context->rx.prev_bit = curr_bit;
+ }
+ ++context->rx.count;
+ mask >>= 1;
+ }
+ }
+
+ if (chunk_num == 10) {
+ if (context->rx.count) {
+ submit_data(context);
+ context->rx.count = 0;
+ }
+ context->rx.initial_space = context->rx.prev_bit;
+ }
+}
+
+/**
+ * report touchscreen input
+ */
+static void imon_touch_display_timeout(unsigned long data)
+{
+ struct imon_context *context = (struct imon_context *)data;
+ struct input_dev *touch;
+
+ if (!context->display_type == IMON_DISPLAY_TYPE_VGA)
+ return;
+
+ touch = context->touch;
+ input_report_abs(touch, ABS_X, context->touch_x);
+ input_report_abs(touch, ABS_Y, context->touch_y);
+ input_report_key(touch, BTN_TOUCH, 0x00);
+ input_sync(touch);
+
+ return;
+}
+
+/**
+ * Callback function for USB core API: receive data
+ */
+static void usb_rx_callback_intf0(struct urb *urb)
+{
+ struct imon_context *context;
+ unsigned char *buf;
+ int len;
+ int intfnum = 0;
+
+ if (!urb)
+ return;
+
+ context = (struct imon_context *)urb->context;
+ if (!context)
+ return;
+
+ buf = urb->transfer_buffer;
+ len = urb->actual_length;
+
+ switch (urb->status) {
+ case -ENOENT: /* usbcore unlink successful! */
+ return;
+
+ case 0:
+ imon_incoming_packet(context, urb, intfnum);
+ break;
+
+ default:
+ dev_warn(context->driver->dev, "imon %s: status(%d): ignored\n",
+ __func__, urb->status);
+ break;
+ }
+
+ usb_submit_urb(context->rx_urb_intf0, GFP_ATOMIC);
+
+ return;
+}
+
+static void usb_rx_callback_intf1(struct urb *urb)
+{
+ struct imon_context *context;
+ unsigned char *buf;
+ int len;
+ int intfnum = 1;
+
+ if (!urb)
+ return;
+
+ context = (struct imon_context *)urb->context;
+ if (!context)
+ return;
+
+ buf = urb->transfer_buffer;
+ len = urb->actual_length;
+
+ switch (urb->status) {
+ case -ENOENT: /* usbcore unlink successful! */
+ return;
+
+ case 0:
+ imon_incoming_packet(context, urb, intfnum);
+ break;
+
+ default:
+ dev_warn(context->driver->dev, "imon %s: status(%d): ignored\n",
+ __func__, urb->status);
+ break;
+ }
+
+ usb_submit_urb(context->rx_urb_intf1, GFP_ATOMIC);
+
+ return;
+}
+
+/**
+ * Callback function for USB core API: Probe
+ */
+static int imon_probe(struct usb_interface *interface,
+ const struct usb_device_id *id)
+{
+ struct usb_device *usbdev = NULL;
+ struct usb_host_interface *iface_desc = NULL;
+ struct usb_endpoint_descriptor *rx_endpoint = NULL;
+ struct usb_endpoint_descriptor *tx_endpoint = NULL;
+ struct urb *rx_urb = NULL;
+ struct urb *tx_urb = NULL;
+ struct lirc_driver *driver = NULL;
+ struct lirc_buffer *rbuf = NULL;
+ struct usb_interface *first_if;
+ struct device *dev = &interface->dev;
+ int ifnum;
+ int lirc_minor = 0;
+ int num_endpts;
+ int retval = 0;
+ int display_ep_found = 0;
+ int ir_ep_found = 0;
+ int alloc_status = 0;
+ int vfd_proto_6p = 0;
+ int ir_onboard_decode = 0;
+ int buf_chunk_size = BUF_CHUNK_SIZE;
+ int code_length;
+ int tx_control = 0;
+ struct imon_context *context = NULL;
+ struct imon_context *first_if_context = NULL;
+ int i, sysfs_err;
+ int configured_display_type = IMON_DISPLAY_TYPE_VFD;
+ u16 vendor, product;
+ const unsigned char fp_packet[] = { 0x40, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x88 };
+
+ /*
+ * Try to auto-detect the type of display if the user hasn't set
+ * it by hand via the display_type modparam. Default is VFD.
+ */
+ if (display_type == IMON_DISPLAY_TYPE_AUTO) {
+ if (usb_match_id(interface, lcd_device_list))
+ configured_display_type = IMON_DISPLAY_TYPE_LCD;
+ else if (usb_match_id(interface, imon_touchscreen_list))
+ configured_display_type = IMON_DISPLAY_TYPE_VGA;
+ else if (usb_match_id(interface, ir_only_list))
+ configured_display_type = IMON_DISPLAY_TYPE_NONE;
+ else
+ configured_display_type = IMON_DISPLAY_TYPE_VFD;
+ } else {
+ configured_display_type = display_type;
+ dev_dbg(dev, "%s: overriding display type to %d via "
+ "modparam\n", __func__, display_type);
+ }
+
+ /*
+ * If it's the LCD, as opposed to the VFD, we just need to replace
+ * the "write" file op.
+ */
+ if (configured_display_type == IMON_DISPLAY_TYPE_LCD)
+ display_fops.write = &lcd_write;
+
+ /*
+ * To get front panel buttons working properly for newer LCD devices,
+ * we really do need a larger buffer.
+ */
+ if (usb_match_id(interface, large_buffer_list))
+ buf_chunk_size = 2 * BUF_CHUNK_SIZE;
+
+ code_length = buf_chunk_size * 8;
+
+ usbdev = usb_get_dev(interface_to_usbdev(interface));
+ iface_desc = interface->cur_altsetting;
+ num_endpts = iface_desc->desc.bNumEndpoints;
+ ifnum = iface_desc->desc.bInterfaceNumber;
+ vendor = le16_to_cpu(usbdev->descriptor.idVendor);
+ product = le16_to_cpu(usbdev->descriptor.idProduct);
+
+ dev_dbg(dev, "%s: found iMON device (%04x:%04x, intf%d)\n",
+ __func__, vendor, product, ifnum);
+
+ /* prevent races probing devices w/multiple interfaces */
+ mutex_lock(&driver_lock);
+
+ first_if = usb_ifnum_to_if(usbdev, 0);
+ first_if_context = (struct imon_context *)usb_get_intfdata(first_if);
+
+ /*
+ * Scan the endpoint list and set:
+ * first input endpoint = IR endpoint
+ * first output endpoint = display endpoint
+ */
+ for (i = 0; i < num_endpts && !(ir_ep_found && display_ep_found); ++i) {
+ struct usb_endpoint_descriptor *ep;
+ int ep_dir;
+ int ep_type;
+ ep = &iface_desc->endpoint[i].desc;
+ ep_dir = ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK;
+ ep_type = ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
+
+ if (!ir_ep_found &&
+ ep_dir == USB_DIR_IN &&
+ ep_type == USB_ENDPOINT_XFER_INT) {
+
+ rx_endpoint = ep;
+ ir_ep_found = 1;
+ dev_dbg(dev, "%s: found IR endpoint\n", __func__);
+
+ } else if (!display_ep_found &&
+ ep_dir == USB_DIR_OUT &&
+ ep_type == USB_ENDPOINT_XFER_INT) {
+ tx_endpoint = ep;
+ display_ep_found = 1;
+ dev_dbg(dev, "%s: found display endpoint\n", __func__);
+ }
+ }
+
+ /*
+ * If we didn't find a display endpoint, this is probably one of the
+ * newer iMON devices that use control urb instead of interrupt
+ */
+ if (!display_ep_found) {
+ if (usb_match_id(interface, ctl_ep_device_list)) {
+ tx_control = 1;
+ display_ep_found = 1;
+ dev_dbg(dev, "%s: device uses control endpoint, not "
+ "interface OUT endpoint\n", __func__);
+ }
+ }
+
+ /*
+ * Some iMON receivers have no display. Unfortunately, it seems
+ * that SoundGraph recycles device IDs between devices both with
+ * and without... :\
+ */
+ if (configured_display_type == IMON_DISPLAY_TYPE_NONE) {
+ display_ep_found = 0;
+ dev_dbg(dev, "%s: device has no display\n", __func__);
+ }
+
+ /*
+ * iMON Touch devices have a VGA touchscreen, but no "display", as
+ * that refers to e.g. /dev/lcd0 (a character device LCD or VFD).
+ */
+ if (configured_display_type == IMON_DISPLAY_TYPE_VGA) {
+ display_ep_found = 0;
+ dev_dbg(dev, "%s: iMON Touch device found\n", __func__);
+ }
+
+ /* Input endpoint is mandatory */
+ if (!ir_ep_found) {
+ err("%s: no valid input (IR) endpoint found.", __func__);
+ retval = -ENODEV;
+ goto exit;
+ } else {
+ /* Determine if the IR signals are decoded onboard */
+ if (usb_match_id(interface, ir_onboard_decode_list))
+ ir_onboard_decode = 1;
+
+ dev_dbg(dev, "%s: ir_onboard_decode: %d\n",
+ __func__, ir_onboard_decode);
+ }
+
+ /* Determine if display requires 6 packets */
+ if (display_ep_found) {
+ if (usb_match_id(interface, vfd_proto_6p_list))
+ vfd_proto_6p = 1;
+
+ dev_dbg(dev, "%s: vfd_proto_6p: %d\n",
+ __func__, vfd_proto_6p);
+ }
+
+ if (ifnum == 0) {
+ context = kzalloc(sizeof(struct imon_context), GFP_KERNEL);
+ if (!context) {
+ err("%s: kzalloc failed for context", __func__);
+ alloc_status = 1;
+ goto alloc_status_switch;
+ }
+ driver = kzalloc(sizeof(struct lirc_driver), GFP_KERNEL);
+ if (!driver) {
+ err("%s: kzalloc failed for lirc_driver", __func__);
+ alloc_status = 2;
+ goto alloc_status_switch;
+ }
+ rbuf = kmalloc(sizeof(struct lirc_buffer), GFP_KERNEL);
+ if (!rbuf) {
+ err("%s: kmalloc failed for lirc_buffer", __func__);
+ alloc_status = 3;
+ goto alloc_status_switch;
+ }
+ if (lirc_buffer_init(rbuf, buf_chunk_size, BUF_SIZE)) {
+ err("%s: lirc_buffer_init failed", __func__);
+ alloc_status = 4;
+ goto alloc_status_switch;
+ }
+ rx_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!rx_urb) {
+ err("%s: usb_alloc_urb failed for IR urb", __func__);
+ alloc_status = 5;
+ goto alloc_status_switch;
+ }
+ tx_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!tx_urb) {
+ err("%s: usb_alloc_urb failed for display urb",
+ __func__);
+ alloc_status = 6;
+ goto alloc_status_switch;
+ }
+
+ mutex_init(&context->lock);
+ context->vfd_proto_6p = vfd_proto_6p;
+ context->ir_onboard_decode = ir_onboard_decode;
+
+ strcpy(driver->name, MOD_NAME);
+ driver->minor = -1;
+ driver->code_length = ir_onboard_decode ?
+ code_length : sizeof(int) * 8;
+ driver->sample_rate = 0;
+ driver->features = (ir_onboard_decode) ?
+ LIRC_CAN_REC_LIRCCODE : LIRC_CAN_REC_MODE2;
+ driver->data = context;
+ driver->rbuf = rbuf;
+ driver->set_use_inc = ir_open;
+ driver->set_use_dec = ir_close;
+ driver->dev = &interface->dev;
+ driver->owner = THIS_MODULE;
+
+ mutex_lock(&context->lock);
+
+ context->driver = driver;
+ /* start out in keyboard mode */
+ context->pad_mouse = 0;
+
+ init_timer(&context->timer);
+ context->timer.data = (unsigned long)context;
+ context->timer.function = imon_touch_display_timeout;
+
+ lirc_minor = lirc_register_driver(driver);
+ if (lirc_minor < 0) {
+ err("%s: lirc_register_driver failed", __func__);
+ alloc_status = 7;
+ goto alloc_status_switch;
+ } else
+ dev_info(dev, "Registered iMON driver "
+ "(lirc minor: %d)\n", lirc_minor);
+
+ /* Needed while unregistering! */
+ driver->minor = lirc_minor;
+
+ } else {
+ /* this is the secondary interface on the device */
+ if (first_if_context->driver) {
+ rx_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!rx_urb) {
+ err("%s: usb_alloc_urb failed for IR urb",
+ __func__);
+ alloc_status = 5;
+ goto alloc_status_switch;
+ }
+
+ context = first_if_context;
+ }
+ mutex_lock(&context->lock);
+ }
+
+ if (ifnum == 0) {
+ context->usbdev_intf0 = usbdev;
+ context->dev_present_intf0 = 1;
+ context->rx_endpoint_intf0 = rx_endpoint;
+ context->rx_urb_intf0 = rx_urb;
+
+ /*
+ * tx is used to send characters to lcd/vfd, associate RF
+ * remotes, set IR protocol, and maybe more...
+ */
+ context->tx_endpoint = tx_endpoint;
+ context->tx_urb = tx_urb;
+ context->tx_control = tx_control;
+
+ if (display_ep_found)
+ context->display_supported = 1;
+
+ if (product == 0xffdc)
+ context->ffdc_dev = 1;
+
+ context->display_type = configured_display_type;
+
+ context->idev = input_allocate_device();
+ input_set_drvdata(context->idev, context);
+
+ snprintf(context->name_idev, sizeof(context->name_idev),
+ "iMON IR Remote (%04x:%04x)", vendor, product);
+ context->idev->name = context->name_idev;
+
+ usb_make_path(usbdev, context->phys_idev,
+ sizeof(context->phys_idev));
+ strlcat(context->phys_idev, "/input0",
+ sizeof(context->phys_idev));
+ context->idev->phys = context->phys_idev;
+
+ context->idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
+
+ context->idev->keybit[BIT_WORD(BTN_MOUSE)] =
+ BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
+ context->idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y) |
+ BIT_MASK(REL_WHEEL);
+
+ /* register all the keys we support */
+ for (i = 0; i < ARRAY_SIZE(imon_remote_key_table); i++) {
+ u16 kc = imon_remote_key_table[i].keycode;
+ __set_bit(kc, context->idev->keybit);
+ }
+ for (i = 0; i < ARRAY_SIZE(imon_panel_key_table); i++) {
+ u16 kc = imon_panel_key_table[i].keycode;
+ __set_bit(kc, context->idev->keybit);
+ }
+ for (i = 0; i < ARRAY_SIZE(imon_mce_key_table); i++) {
+ u16 kc = imon_mce_key_table[i].keycode;
+ __set_bit(kc, context->idev->keybit);
+ }
+
+ usb_to_input_id(usbdev, &context->idev->id);
+ context->idev->dev.parent = &interface->dev;
+ retval = input_register_device(context->idev);
+ if (retval)
+ dev_info(dev, "%s: input device setup failed\n",
+ __func__);
+
+ usb_fill_int_urb(context->rx_urb_intf0, context->usbdev_intf0,
+ usb_rcvintpipe(context->usbdev_intf0,
+ context->rx_endpoint_intf0->bEndpointAddress),
+ context->usb_rx_buf, sizeof(context->usb_rx_buf),
+ usb_rx_callback_intf0, context,
+ context->rx_endpoint_intf0->bInterval);
+
+ retval = usb_submit_urb(context->rx_urb_intf0, GFP_KERNEL);
+
+ if (retval) {
+ err("%s: usb_submit_urb failed for intf0 (%d)",
+ __func__, retval);
+ mutex_unlock(&context->lock);
+ goto exit;
+ }
+
+ } else {
+ context->usbdev_intf1 = usbdev;
+ context->dev_present_intf1 = 1;
+ context->rx_endpoint_intf1 = rx_endpoint;
+ context->rx_urb_intf1 = rx_urb;
+
+ if (context->display_type == IMON_DISPLAY_TYPE_VGA) {
+ context->touch = input_allocate_device();
+
+ snprintf(context->name_touch,
+ sizeof(context->name_touch),
+ "iMON USB Touchscreen (%04x:%04x)",
+ vendor, product);
+ context->touch->name = context->name_touch;
+
+ usb_make_path(usbdev, context->phys_touch,
+ sizeof(context->phys_touch));
+ strlcat(context->phys_touch, "/input1",
+ sizeof(context->phys_touch));
+ context->touch->phys = context->phys_touch;
+
+ context->touch->evbit[0] =
+ BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+ context->touch->keybit[BIT_WORD(BTN_TOUCH)] =
+ BIT_MASK(BTN_TOUCH);
+ input_set_abs_params(context->touch, ABS_X,
+ 0x00, 0xfff, 0, 0);
+ input_set_abs_params(context->touch, ABS_Y,
+ 0x00, 0xfff, 0, 0);
+
+ input_set_drvdata(context->touch, context);
+
+ usb_to_input_id(usbdev, &context->touch->id);
+ context->touch->dev.parent = &interface->dev;
+ retval = input_register_device(context->touch);
+ if (retval)
+ dev_info(dev, "%s: touchscreen input device "
+ "setup failed\n", __func__);
+ } else
+ context->touch = NULL;
+
+ usb_fill_int_urb(context->rx_urb_intf1, context->usbdev_intf1,
+ usb_rcvintpipe(context->usbdev_intf1,
+ context->rx_endpoint_intf1->bEndpointAddress),
+ context->usb_rx_buf, sizeof(context->usb_rx_buf),
+ usb_rx_callback_intf1, context,
+ context->rx_endpoint_intf1->bInterval);
+
+ retval = usb_submit_urb(context->rx_urb_intf1, GFP_KERNEL);
+
+ if (retval) {
+ err("%s: usb_submit_urb failed for intf1 (%d)",
+ __func__, retval);
+ mutex_unlock(&context->lock);
+ goto exit;
+ }
+ }
+
+ usb_set_intfdata(interface, context);
+
+ /* RF products *also* use 0xffdc... sigh... */
+ if (context->ffdc_dev) {
+ sysfs_err = sysfs_create_group(&interface->dev.kobj,
+ &imon_rf_attribute_group);
+ if (sysfs_err)
+ err("%s: Could not create RF sysfs entries(%d)",
+ __func__, sysfs_err);
+ }
+
+ if (context->display_supported && ifnum == 0) {
+ dev_dbg(dev, "%s: Registering iMON display with sysfs\n",
+ __func__);
+
+ /* set up sysfs entry for built-in clock */
+ sysfs_err = sysfs_create_group(&interface->dev.kobj,
+ &imon_display_attribute_group);
+ if (sysfs_err)
+ err("%s: Could not create display sysfs entries(%d)",
+ __func__, sysfs_err);
+
+ if (usb_register_dev(interface, &imon_class)) {
+ /* Not a fatal error, so ignore */
+ dev_info(dev, "%s: could not get a minor number for "
+ "display\n", __func__);
+ }
+
+ /* Enable front-panel buttons and/or knobs */
+ memcpy(context->usb_tx_buf, &fp_packet, sizeof(fp_packet));
+ retval = send_packet(context);
+ /* Not fatal, but warn about it */
+ if (retval)
+ dev_info(dev, "%s: failed to enable front-panel "
+ "buttons and/or knobs\n", __func__);
+ }
+
+ /* set IR protocol/remote type */
+ imon_set_ir_protocol(context);
+
+ dev_info(dev, "iMON device (%04x:%04x, intf%d) on "
+ "usb<%d:%d> initialized\n", vendor, product, ifnum,
+ usbdev->bus->busnum, usbdev->devnum);
+
+alloc_status_switch:
+ mutex_unlock(&context->lock);
+
+ switch (alloc_status) {
+ case 7:
+ usb_free_urb(tx_urb);
+ case 6:
+ usb_free_urb(rx_urb);
+ case 5:
+ if (rbuf)
+ lirc_buffer_free(rbuf);
+ case 4:
+ kfree(rbuf);
+ case 3:
+ kfree(driver);
+ case 2:
+ kfree(context);
+ context = NULL;
+ case 1:
+ retval = -ENOMEM;
+ break;
+ case 0:
+ retval = 0;
+ }
+
+exit:
+ mutex_unlock(&driver_lock);
+
+ return retval;
+}
+
+/**
+ * Callback function for USB core API: disconnect
+ */
+static void imon_disconnect(struct usb_interface *interface)
+{
+ struct imon_context *context;
+ int ifnum;
+
+ /* prevent races with ir_open()/display_open() */
+ mutex_lock(&driver_lock);
+
+ context = usb_get_intfdata(interface);
+ ifnum = interface->cur_altsetting->desc.bInterfaceNumber;
+
+ mutex_lock(&context->lock);
+
+ /*
+ * sysfs_remove_group is safe to call even if sysfs_create_group
+ * hasn't been called
+ */
+ sysfs_remove_group(&interface->dev.kobj,
+ &imon_display_attribute_group);
+ sysfs_remove_group(&interface->dev.kobj,
+ &imon_rf_attribute_group);
+
+ usb_set_intfdata(interface, NULL);
+
+ /* Abort ongoing write */
+ if (atomic_read(&context->tx.busy)) {
+ usb_kill_urb(context->tx_urb);
+ complete_all(&context->tx.finished);
+ }
+
+ if (ifnum == 0) {
+ context->dev_present_intf0 = 0;
+ usb_kill_urb(context->rx_urb_intf0);
+ input_unregister_device(context->idev);
+ if (context->display_supported)
+ usb_deregister_dev(interface, &imon_class);
+ } else {
+ context->dev_present_intf1 = 0;
+ usb_kill_urb(context->rx_urb_intf1);
+ if (context->display_type == IMON_DISPLAY_TYPE_VGA)
+ input_unregister_device(context->touch);
+ }
+
+ if (!context->ir_isopen && !context->dev_present_intf0 &&
+ !context->dev_present_intf1) {
+ del_timer_sync(&context->timer);
+ deregister_from_lirc(context);
+ mutex_unlock(&context->lock);
+ if (!context->display_isopen)
+ free_imon_context(context);
+ } else
+ mutex_unlock(&context->lock);
+
+ mutex_unlock(&driver_lock);
+
+ printk(KERN_INFO "%s: iMON device (intf%d) disconnected\n",
+ __func__, ifnum);
+}
+
+static int imon_suspend(struct usb_interface *intf, pm_message_t message)
+{
+ struct imon_context *context = usb_get_intfdata(intf);
+ int ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
+
+ if (ifnum == 0)
+ usb_kill_urb(context->rx_urb_intf0);
+ else
+ usb_kill_urb(context->rx_urb_intf1);
+
+ return 0;
+}
+
+static int imon_resume(struct usb_interface *intf)
+{
+ int rc = 0;
+ struct imon_context *context = usb_get_intfdata(intf);
+ int ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
+
+ if (ifnum == 0) {
+ usb_fill_int_urb(context->rx_urb_intf0, context->usbdev_intf0,
+ usb_rcvintpipe(context->usbdev_intf0,
+ context->rx_endpoint_intf0->bEndpointAddress),
+ context->usb_rx_buf, sizeof(context->usb_rx_buf),
+ usb_rx_callback_intf0, context,
+ context->rx_endpoint_intf0->bInterval);
+
+ rc = usb_submit_urb(context->rx_urb_intf0, GFP_ATOMIC);
+
+ } else {
+ usb_fill_int_urb(context->rx_urb_intf1, context->usbdev_intf1,
+ usb_rcvintpipe(context->usbdev_intf1,
+ context->rx_endpoint_intf1->bEndpointAddress),
+ context->usb_rx_buf, sizeof(context->usb_rx_buf),
+ usb_rx_callback_intf1, context,
+ context->rx_endpoint_intf1->bInterval);
+
+ rc = usb_submit_urb(context->rx_urb_intf1, GFP_ATOMIC);
+ }
+
+ return rc;
+}
+
+static int __init imon_init(void)
+{
+ int rc;
+
+ printk(KERN_INFO MOD_NAME ": " MOD_DESC ", v" MOD_VERSION "\n");
+
+ rc = usb_register(&imon_driver);
+ if (rc) {
+ err("%s: usb register failed(%d)", __func__, rc);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static void __exit imon_exit(void)
+{
+ usb_deregister(&imon_driver);
+ printk(KERN_INFO MOD_NAME ": module removed. Goodbye!\n");
+}
+
+module_init(imon_init);
+module_exit(imon_exit);
===================================================================
@@ -0,0 +1,209 @@
+/*
+ * lirc_imon.h: LIRC/VFD/LCD driver for SoundGraph iMON IR/VFD/LCD
+ * including the iMON PAD model
+ *
+ * Copyright(C) 2004 Venky Raju(dev@venky.ws)
+ * Copyright(C) 2009 Jarod Wilson <jarod@wilsonet.com>
+ *
+ * lirc_imon 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+static const struct {
+ u32 hw_code;
+ u16 keycode;
+} imon_remote_key_table[] = {
+ /* keys sorted mostly by frequency of use to optimize lookups */
+ { 0x2a8195b7, KEY_REWIND },
+ { 0x298315b7, KEY_REWIND },
+ { 0x2b8115b7, KEY_FASTFORWARD },
+ { 0x2b8315b7, KEY_FASTFORWARD },
+ { 0x2b9115b7, KEY_PREVIOUS },
+ { 0x298195b7, KEY_NEXT },
+
+ { 0x2a8115b7, KEY_PLAY },
+ { 0x2a8315b7, KEY_PLAY },
+ { 0x2a9115b7, KEY_PAUSE },
+ { 0x2b9715b7, KEY_STOP },
+ { 0x298115b7, KEY_RECORD },
+
+ { 0x01008000, KEY_UP },
+ { 0x01007f00, KEY_DOWN },
+ { 0x01000080, KEY_LEFT },
+ { 0x0100007f, KEY_RIGHT },
+
+ { 0x2aa515b7, KEY_UP },
+ { 0x289515b7, KEY_DOWN },
+ { 0x29a515b7, KEY_LEFT },
+ { 0x2ba515b7, KEY_RIGHT },
+
+ { 0x0200002c, KEY_SPACE }, /* Select/Space */
+ { 0x02000028, KEY_ENTER },
+ { 0x288195b7, KEY_EXIT },
+ { 0x02000029, KEY_ESC },
+ { 0x0200002a, KEY_BACKSPACE },
+
+ { 0x2b9595b7, KEY_MUTE },
+ { 0x28a395b7, KEY_VOLUMEUP },
+ { 0x28a595b7, KEY_VOLUMEDOWN },
+ { 0x289395b7, KEY_CHANNELUP },
+ { 0x288795b7, KEY_CHANNELDOWN },
+
+ { 0x0200001e, KEY_NUMERIC_1 },
+ { 0x0200001f, KEY_NUMERIC_2 },
+ { 0x02000020, KEY_NUMERIC_3 },
+ { 0x02000021, KEY_NUMERIC_4 },
+ { 0x02000022, KEY_NUMERIC_5 },
+ { 0x02000023, KEY_NUMERIC_6 },
+ { 0x02000024, KEY_NUMERIC_7 },
+ { 0x02000025, KEY_NUMERIC_8 },
+ { 0x02000026, KEY_NUMERIC_9 },
+ { 0x02000027, KEY_NUMERIC_0 },
+
+ { 0x02200025, KEY_NUMERIC_STAR },
+ { 0x02200020, KEY_NUMERIC_POUND },
+
+ { 0x2b8515b7, KEY_VIDEO },
+ { 0x299195b7, KEY_AUDIO },
+ { 0x2ba115b7, KEY_CAMERA },
+ { 0x28a515b7, KEY_TV },
+ { 0x29a395b7, KEY_DVD },
+ { 0x29a295b7, KEY_DVD },
+
+ /* the Menu key between DVD and Subtitle on the RM-200... */
+ { 0x2ba385b7, KEY_MENU },
+ { 0x2ba395b7, KEY_MENU },
+
+ { 0x288515b7, KEY_BOOKMARKS },
+ { 0x2ab715b7, KEY_MEDIA }, /* Thumbnail */
+ { 0x298595b7, KEY_SUBTITLE },
+ { 0x2b8595b7, KEY_LANGUAGE },
+
+ { 0x29a595b7, KEY_ZOOM },
+ { 0x2aa395b7, KEY_SCREEN }, /* FullScreen */
+
+ { 0x299115b7, KEY_KEYBOARD },
+ { 0x299135b7, KEY_KEYBOARD },
+
+ { 0x01010000, BTN_LEFT },
+ { 0x01020000, BTN_RIGHT },
+ { 0x01010080, BTN_LEFT },
+ { 0x01020080, BTN_RIGHT },
+
+ { 0x2a9395b7, KEY_CYCLEWINDOWS }, /* TaskSwitcher */
+ { 0x2b8395b7, KEY_TIME }, /* Timer */
+
+ { 0x289115b7, KEY_POWER },
+ { 0x29b195b7, KEY_EJECTCD }, /* the one next to play */
+ { 0x299395b7, KEY_EJECTCLOSECD }, /* eject (above TaskSwitcher) */
+
+ { 0x02800000, KEY_MENU }, /* Left Menu */
+ { 0x02000065, KEY_COMPOSE }, /* RightMenu */
+ { 0x2ab195b7, KEY_PROG1 }, /* Go */
+ { 0x29b715b7, KEY_DASHBOARD }, /* AppLauncher */
+};
+
+static const struct {
+ u32 hw_code;
+ u16 keycode;
+} imon_mce_key_table[] = {
+ /* keys sorted mostly by frequency of use to optimize lookups */
+ { 0x800f8415, KEY_REWIND },
+ { 0x800f8414, KEY_FASTFORWARD },
+ { 0x800f841b, KEY_PREVIOUS },
+ { 0x800f841a, KEY_NEXT },
+
+ { 0x800f8416, KEY_PLAY },
+ { 0x800f8418, KEY_PAUSE },
+ { 0x800f8418, KEY_PAUSE },
+ { 0x800f8419, KEY_STOP },
+ { 0x800f8417, KEY_RECORD },
+
+ { 0x02000052, KEY_UP },
+ { 0x02000051, KEY_DOWN },
+ { 0x02000050, KEY_LEFT },
+ { 0x0200004f, KEY_RIGHT },
+
+ { 0x02000028, KEY_ENTER },
+/* the OK and Enter buttons decode to the same value
+ { 0x02000028, KEY_OK }, */
+ { 0x0200002a, KEY_EXIT },
+ { 0x02000029, KEY_DELETE },
+
+ { 0x800f840e, KEY_MUTE },
+ { 0x800f8410, KEY_VOLUMEUP },
+ { 0x800f8411, KEY_VOLUMEDOWN },
+ { 0x800f8412, KEY_CHANNELUP },
+ { 0x800f8413, KEY_CHANNELDOWN },
+
+ { 0x0200001e, KEY_NUMERIC_1 },
+ { 0x0200001f, KEY_NUMERIC_2 },
+ { 0x02000020, KEY_NUMERIC_3 },
+ { 0x02000021, KEY_NUMERIC_4 },
+ { 0x02000022, KEY_NUMERIC_5 },
+ { 0x02000023, KEY_NUMERIC_6 },
+ { 0x02000024, KEY_NUMERIC_7 },
+ { 0x02000025, KEY_NUMERIC_8 },
+ { 0x02000026, KEY_NUMERIC_9 },
+ { 0x02000027, KEY_NUMERIC_0 },
+
+ { 0x02200025, KEY_NUMERIC_STAR },
+ { 0x02200020, KEY_NUMERIC_POUND },
+
+ { 0x800f8446, KEY_TV },
+ { 0x800f8447, KEY_AUDIO },
+ { 0x800f8448, KEY_PVR }, /* RecordedTV */
+ { 0x800f8449, KEY_CAMERA },
+ { 0x800f844a, KEY_VIDEO },
+ { 0x800f8424, KEY_DVD },
+ { 0x800f8425, KEY_TUNER }, /* LiveTV */
+
+ { 0x800f845b, KEY_RED },
+ { 0x800f845c, KEY_GREEN },
+ { 0x800f845d, KEY_YELLOW },
+ { 0x800f845e, KEY_BLUE },
+
+ { 0x800f840f, KEY_INFO },
+ { 0x800f8426, KEY_EPG }, /* Guide */
+ { 0x800f845a, KEY_SUBTITLE }, /* Caption */
+
+ { 0x800f840c, KEY_POWER },
+ { 0x800f840d, KEY_PROG1 }, /* Windows MCE button */
+
+};
+
+static const struct {
+ u64 hw_code;
+ u16 keycode;
+} imon_panel_key_table[] = {
+ { 0x000000000f000fee, KEY_PROG1 }, /* Go */
+ { 0x000000001f000fee, KEY_AUDIO },
+ { 0x0000000020000fee, KEY_VIDEO },
+ { 0x0000000021000fee, KEY_CAMERA },
+ { 0x0000000027000fee, KEY_DVD },
+/* the TV key on my panel is broken, doesn't work under any OS
+ { 0x0000000000000fee, KEY_TV }, */
+ { 0x0000000005000fee, KEY_PREVIOUS },
+ { 0x0000000007000fee, KEY_REWIND },
+ { 0x0000000004000fee, KEY_STOP },
+ { 0x000000003c000fee, KEY_PLAYPAUSE },
+ { 0x0000000008000fee, KEY_FASTFORWARD },
+ { 0x0000000006000fee, KEY_NEXT },
+ { 0x0000000100000fee, KEY_RIGHT },
+ { 0x0000010000000fee, KEY_LEFT },
+ { 0x000000003d000fee, KEY_SELECT },
+ { 0x0001000000000fee, KEY_VOLUMEUP },
+ { 0x0100000000000fee, KEY_VOLUMEDOWN },
+ { 0x0000000001000fee, KEY_MUTE },
+};