[PATCH] input: driver for USB VoIP phones with CM109 chipset
From: Alfred E. Heggestad
Date: Thu Feb 07 2008 - 14:12:21 EST
From: Alfred E. Heggestad <aeh@xxxxxx>
This driver adds support for USB VoIP phones using the CM109 chipset,
such as Komunikate KIP-1000 and Genius G-talk. Keypad is scanned and
events are reported to the input subsystem. The buzzer can be activated
by sending SND_TONE or SND_BELL to the input device. The phone keymap
can be selected in run-time by using the "phone" module parameter.
The driver has been tested with linux 2.6.24 on i386, and also tested
to build cleanly on AMD64.
More testing and code review is welcome..
Signed-off-by: Alfred E. Heggestad <aeh@xxxxxx>
---
diff -uprN -X linux-2.6.24/Documentation/dontdiff linux-2.6.24-orig/drivers/input/misc/cm109.c linux-2.6.24/drivers/input/misc/cm109.c
--- linux-2.6.24-orig/drivers/input/misc/cm109.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.24/drivers/input/misc/cm109.c 2008-02-07 19:13:52.000000000 +0100
@@ -0,0 +1,646 @@
+/*
+ * Driver for the VoIP USB phones with CM109 chipsets.
+ *
+ * Copyright (C) 2007 - 2008 Alfred E. Heggestad <aeh@xxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, version 2.
+ */
+
+/*
+ * Tested devices:
+ * - Komunikate KIP1000
+ * - Genius G-talk
+ * - ...
+ *
+ * This driver is based on the yealink.c driver
+ *
+ * Thanks to:
+ * - Authors of yealink.c
+ * - Thomas Reitmayr
+ * - Oliver Neukum for good review comments
+ * - Shaun Jackman <sjackman@xxxxxxxxx> for Genius G-talk keymap
+ *
+ * Todo:
+ * - Read/write EEPROM
+ * - Report input events volume up/down
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/rwsem.h>
+#include <linux/usb/input.h>
+
+/* #define CM109_DEBUG 1 */
+
+#define DRIVER_VERSION "20080205"
+#define DRIVER_AUTHOR "Alfred E. Heggestad"
+#define DRIVER_DESC "CM109 phone driver"
+
+static char *phone = "kip1000";
+module_param(phone, charp, S_IRUSR);
+MODULE_PARM_DESC(phone, "Phone name {kip1000, gtalk}");
+
+
+enum {
+ /* HID Registers */
+ HID_IR0 = 0x00, /* Record/Playback-mute button, Volume up/down */
+ HID_IR1 = 0x01, /* GPI, generic registers or EEPROM_DATA0 */
+ HID_IR2 = 0x02, /* Generic registers or EEPROM_DATA1 */
+ HID_IR3 = 0x03, /* Generic registers or EEPROM_CTRL */
+ HID_OR0 = 0x00, /* Mapping control, buzzer, SPDIF (offset 0x04) */
+ HID_OR1 = 0x01, /* GPO - General Purpose Output */
+ HID_OR2 = 0x02, /* Set GPIO to input/output mode */
+ HID_OR3 = 0x03, /* SPDIF status channel or EEPROM_CTRL */
+
+ /* HID_IR0 */
+ RECORD_MUTE = 1 << 3,
+ PLAYBACK_MUTE = 1 << 2,
+ VOLUME_DOWN = 1 << 1,
+ VOLUME_UP = 1 << 0,
+
+ /* HID_OR0 */
+ /* bits 7-6
+ 0: HID_OR1-2 are used for GPO; HID_OR0, 3 are used for buzzer
+ and SPDIF
+ 1: HID_OR0-3 are used as generic HID registers
+ 2: Values written to HID_OR0-3 are also mapped to MCU_CTRL,
+ EEPROM_DATA0-1, EEPROM_CTRL (see Note)
+ 3: Reserved
+ */
+ HID_OR_GPO_BUZ_SPDIF = 0 << 6,
+ HID_OR_GENERIC_HID_REG = 1 << 6,
+ HID_OR_MAP_MCU_EEPROM = 2 << 6,
+
+ BUZZER_ON = 1 << 5,
+};
+
+/* CM109 protocol packet */
+struct cm109_ctl_packet {
+ u8 byte[4];
+} __attribute__ ((packed));
+
+enum {USB_PKT_LEN = sizeof(struct cm109_ctl_packet)};
+
+/* CM109 device structure */
+struct cm109_dev {
+ struct input_dev *idev; /* input device */
+ struct usb_device *udev; /* usb device */
+
+ /* irq input channel */
+ struct cm109_ctl_packet *irq_data;
+ dma_addr_t irq_dma;
+ struct urb *urb_irq;
+
+ /* control output channel */
+ struct cm109_ctl_packet *ctl_data;
+ dma_addr_t ctl_dma;
+ struct usb_ctrlrequest *ctl_req;
+ dma_addr_t ctl_req_dma;
+ struct urb *urb_ctl;
+
+ spinlock_t submit_lock;
+ int disconnecting;
+
+ char phys[64]; /* physical device path */
+ int key_code; /* last reported key */
+ int keybit; /* 0=new scan 1,2,4,8=scan columns */
+ u8 gpi; /* Cached value of GPI (high nibble) */
+};
+
+/*******************************************************************************
+ * CM109 key interface
+ ******************************************************************************/
+
+
+/* Map device buttons to internal key events.
+ *
+ * The "up" and "down" keys, are symbolised by arrows on the button.
+ * The "pickup" and "hangup" keys are symbolised by a green and red phone
+ * on the button.
+
+ Komunikate KIP1000 Keyboard Matrix
+
+ -> -- 1 -- 2 -- 3 --> GPI pin 4 (0x10)
+ | | | |
+ <- -- 4 -- 5 -- 6 --> GPI pin 5 (0x20)
+ | | | |
+ END - 7 -- 8 -- 9 --> GPI pin 6 (0x40)
+ | | | |
+ OK -- * -- 0 -- # --> GPI pin 7 (0x80)
+ | | | |
+
+ /|\ /|\ /|\ /|\
+ | | | |
+GPO
+pin: 3 2 1 0
+ 0x8 0x4 0x2 0x1
+
+ */
+static int keymap_kip1000(int scancode)
+{
+ switch (scancode) { /* phone key: */
+ case 0x82: return KEY_0; /* 0 */
+ case 0x14: return KEY_1; /* 1 */
+ case 0x12: return KEY_2; /* 2 */
+ case 0x11: return KEY_3; /* 3 */
+ case 0x24: return KEY_4; /* 4 */
+ case 0x22: return KEY_5; /* 5 */
+ case 0x21: return KEY_6; /* 6 */
+ case 0x44: return KEY_7; /* 7 */
+ case 0x42: return KEY_8; /* 8 */
+ case 0x41: return KEY_9; /* 9 */
+ case 0x81: return KEY_LEFTSHIFT | KEY_3 << 8; /* # */
+ case 0x84: return KEY_KPASTERISK; /* * */
+ case 0x88: return KEY_ENTER; /* pickup */
+ case 0x48: return KEY_ESC; /* hangup */
+ case 0x28: return KEY_LEFT; /* IN */
+ case 0x18: return KEY_RIGHT; /* OUT */
+ }
+ return -EINVAL;
+}
+
+/*
+ Contributed by Shaun Jackman <sjackman@xxxxxxxxx>
+
+ Genius G-Talk keyboard matrix
+ 0 1 2 3
+ 4: 0 4 8 Talk
+ 5: 1 5 9 End
+ 6: 2 6 # Up
+ 7: 3 7 * Down
+*/
+static int keymap_gtalk(int scancode)
+{
+ switch (scancode) {
+ case 0x11: return KEY_0;
+ case 0x21: return KEY_1;
+ case 0x41: return KEY_2;
+ case 0x81: return KEY_3;
+ case 0x12: return KEY_4;
+ case 0x22: return KEY_5;
+ case 0x42: return KEY_6;
+ case 0x82: return KEY_7;
+ case 0x14: return KEY_8;
+ case 0x24: return KEY_9;
+ case 0x44: return KEY_LEFTSHIFT | KEY_3 << 8; /* # */
+ case 0x84: return KEY_KPASTERISK;
+ case 0x18: return KEY_ENTER; /* Talk (green handset) */
+ case 0x28: return KEY_ESC; /* End (red handset) */
+ case 0x48: return KEY_UP; /* Menu up (rocker switch) */
+ case 0x88: return KEY_DOWN; /* Menu down (rocker switch) */
+ }
+ return -EINVAL;
+}
+
+static int (*keymap)(int) = keymap_kip1000;
+
+
+/* Completes a request by converting the data into events for the
+ * input subsystem.
+ *
+ * The key parameter can be cascaded: key2 << 8 | key1
+ */
+static void report_key(struct cm109_dev *dev, int key)
+{
+ struct input_dev *idev = dev->idev;
+
+ if (dev->key_code >= 0) {
+ /* old key up */
+ input_report_key(idev, dev->key_code & 0xff, 0);
+ if (dev->key_code >> 8)
+ input_report_key(idev, dev->key_code >> 8, 0);
+ }
+
+ dev->key_code = key;
+ if (key >= 0) {
+ /* new valid key */
+ input_report_key(idev, key & 0xff, 1);
+ if (key >> 8)
+ input_report_key(idev, key >> 8, 1);
+ }
+ input_sync(idev);
+}
+
+/*******************************************************************************
+ * CM109 usb communication interface
+ ******************************************************************************/
+
+
+/*
+ * IRQ handler
+ */
+static void urb_irq_callback(struct urb *urb)
+{
+ struct cm109_dev *dev = urb->context;
+ int ret;
+
+#ifdef CM109_DEBUG
+ dbg("### URB IRQ: [0x%02x 0x%02x 0x%02x 0x%02x] keybit=0x%02x",
+ dev->irq_data->byte[0],
+ dev->irq_data->byte[1],
+ dev->irq_data->byte[2],
+ dev->irq_data->byte[3],
+ dev->keybit);
+#endif
+
+ if (urb->status) {
+ if (-ESHUTDOWN == urb->status)
+ return;
+ err("%s - urb status %d", __FUNCTION__, urb->status);
+ }
+
+ /* Scan key column */
+ if (0xf == dev->keybit) {
+
+ /* Any changes ? */
+ if ((dev->gpi & 0xf0) == (dev->irq_data->byte[HID_IR1] & 0xf0)) {
+ goto out;
+ }
+
+ dev->gpi = dev->irq_data->byte[HID_IR1] & 0xf0;
+
+ dev->keybit = 0x1;
+ } else {
+ report_key(dev, keymap(dev->irq_data->byte[HID_IR1]));
+
+ dev->keybit <<= 1;
+ if (dev->keybit > 0x8)
+ dev->keybit = 0xf;
+ }
+
+ dev->ctl_data->byte[HID_OR1] = dev->keybit;
+ dev->ctl_data->byte[HID_OR2] = dev->keybit;
+
+ out:
+ ret = usb_submit_urb(dev->urb_ctl, GFP_ATOMIC);
+ if (ret)
+ err("%s - usb_submit_urb failed %d", __FUNCTION__, ret);
+}
+
+static void urb_ctl_callback(struct urb *urb)
+{
+ struct cm109_dev *dev = urb->context;
+ int ret = 0;
+
+#ifdef CM109_DEBUG
+ dbg("### URB CTL: [0x%02x 0x%02x 0x%02x 0x%02x]",
+ dev->ctl_data->byte[0],
+ dev->ctl_data->byte[1],
+ dev->ctl_data->byte[2],
+ dev->ctl_data->byte[3]);
+#endif
+
+ if (urb->status)
+ err("%s - urb status %d", __FUNCTION__, urb->status);
+
+ spin_lock(&dev->submit_lock);
+ /* ask for a response */
+ if (!dev->disconnecting)
+ ret = usb_submit_urb(dev->urb_irq, GFP_ATOMIC);
+ spin_unlock(&dev->submit_lock);
+
+ if (ret)
+ err("%s - usb_submit_urb failed %d", __FUNCTION__, ret);
+}
+
+/*******************************************************************************
+ * input event interface
+ ******************************************************************************/
+
+static DEFINE_SPINLOCK(cm109_buzz_lock);
+
+static int input_open(struct input_dev *idev)
+{
+ struct cm109_dev *dev = input_get_drvdata(idev);
+ int ret;
+
+ dev->key_code = -1; /* no keys pressed */
+ dev->keybit = 0xf;
+
+ /* issue INIT */
+ dev->ctl_data->byte[HID_OR0] = HID_OR_GPO_BUZ_SPDIF;
+ dev->ctl_data->byte[HID_OR1] = dev->keybit;
+ dev->ctl_data->byte[HID_OR2] = dev->keybit;
+ dev->ctl_data->byte[HID_OR3] = 0x00;
+
+ if ((ret = usb_submit_urb(dev->urb_ctl, GFP_KERNEL)) != 0) {
+ err("%s - usb_submit_urb failed with result %d",
+ __FUNCTION__, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void input_close(struct input_dev *idev)
+{
+ struct cm109_dev *dev = input_get_drvdata(idev);
+
+ usb_kill_urb(dev->urb_ctl);
+ usb_kill_urb(dev->urb_irq);
+}
+
+static void buzz(struct cm109_dev *dev, int on)
+{
+ int ret;
+
+ if (dev == NULL) {
+ err("buzz: dev is NULL");
+ return;
+ }
+
+ dbg("Buzzer %s", on ? "on" : "off");
+ if (on)
+ dev->ctl_data->byte[HID_OR0] |= BUZZER_ON;
+ else
+ dev->ctl_data->byte[HID_OR0] &= ~BUZZER_ON;
+
+ ret = usb_submit_urb(dev->urb_ctl, GFP_ATOMIC);
+ if (ret)
+ err("%s - usb_submit_urb failed %d", __FUNCTION__, ret);
+}
+
+static int input_ev(struct input_dev *idev, unsigned int type,
+ unsigned int code, int value)
+{
+ struct cm109_dev *dev = input_get_drvdata(idev);
+ unsigned long flags;
+
+#ifdef CM109_DEBUG
+ info("input_ev: type=%u code=%u value=%d", type, code, value);
+#endif
+
+ if (type != EV_SND)
+ return -EINVAL;
+
+ switch (code) {
+ case SND_TONE:
+ case SND_BELL:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ spin_lock_irqsave(&cm109_buzz_lock, flags);
+ buzz(dev, value);
+ spin_unlock_irqrestore(&cm109_buzz_lock, flags);
+
+ return 0;
+}
+
+
+/*******************************************************************************
+ * Linux interface and usb initialisation
+ ******************************************************************************/
+
+struct driver_info {
+ char *name;
+};
+
+static const struct driver_info info_cm109 = {
+ .name = "CM109 USB driver",
+};
+
+enum {
+ VENDOR_ID = 0x0d8c, /* C-Media Electronics */
+ PRODUCT_ID_CM109 = 0x000e, /* CM109 defines range 0x0008 - 0x000f */
+};
+
+/* table of devices that work with this driver */
+static const struct usb_device_id usb_table[] = {
+ {
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
+ USB_DEVICE_ID_MATCH_INT_INFO,
+ .idVendor = VENDOR_ID,
+ .idProduct = PRODUCT_ID_CM109,
+ .bInterfaceClass = USB_CLASS_HID,
+ .bInterfaceSubClass = 0,
+ .bInterfaceProtocol = 0,
+ .driver_info = (kernel_ulong_t) & info_cm109},
+ /* you can add more devices here with product ID 0x0008 - 0x000f */
+ {}
+};
+
+static int usb_cleanup(struct cm109_dev *dev, int err)
+{
+ if (dev == NULL)
+ return err;
+
+ usb_kill_urb(dev->urb_irq); /* parameter validation in core/urb */
+ usb_kill_urb(dev->urb_ctl); /* parameter validation in core/urb */
+
+ if (dev->idev) {
+ if (err)
+ input_free_device(dev->idev);
+ else
+ input_unregister_device(dev->idev);
+ }
+ if (dev->ctl_req)
+ usb_buffer_free(dev->udev, sizeof(*(dev->ctl_req)),
+ dev->ctl_req, dev->ctl_req_dma);
+ if (dev->ctl_data)
+ usb_buffer_free(dev->udev, USB_PKT_LEN,
+ dev->ctl_data, dev->ctl_dma);
+ if (dev->irq_data)
+ usb_buffer_free(dev->udev, USB_PKT_LEN,
+ dev->irq_data, dev->irq_dma);
+
+ usb_free_urb(dev->urb_irq); /* parameter validation in core/urb */
+ usb_free_urb(dev->urb_ctl); /* parameter validation in core/urb */
+ kfree(dev);
+
+ return err;
+}
+
+static void usb_disconnect(struct usb_interface *interface)
+{
+ struct cm109_dev *dev;
+
+ dev = usb_get_intfdata(interface);
+
+ /* Wait for URB idle */
+ spin_lock_irq(&dev->submit_lock);
+ dev->disconnecting = 1;
+ spin_unlock_irq(&dev->submit_lock);
+
+ usb_set_intfdata(interface, NULL);
+
+ usb_cleanup(dev, 0);
+}
+
+static int usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+ struct usb_device *udev = interface_to_usbdev(intf);
+ struct driver_info *nfo = (struct driver_info *)id->driver_info;
+ struct usb_host_interface *interface;
+ struct usb_endpoint_descriptor *endpoint;
+ struct cm109_dev *dev;
+ struct input_dev *input_dev;
+ int ret, pipe, i;
+
+ interface = intf->cur_altsetting;
+ endpoint = &interface->endpoint[0].desc;
+
+ if (!usb_endpoint_is_int_in(endpoint))
+ return -ENODEV;
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+
+ spin_lock_init(&dev->submit_lock);
+ dev->disconnecting = 0;
+
+ dev->udev = udev;
+
+ dev->idev = input_dev = input_allocate_device();
+ if (!input_dev)
+ goto err;
+
+ /* allocate usb buffers */
+ dev->irq_data = usb_buffer_alloc(udev, USB_PKT_LEN,
+ GFP_KERNEL, &dev->irq_dma);
+ if (dev->irq_data == NULL)
+ goto err;
+
+ dev->ctl_data = usb_buffer_alloc(udev, USB_PKT_LEN,
+ GFP_KERNEL, &dev->ctl_dma);
+ if (!dev->ctl_data)
+ goto err;
+
+ dev->ctl_req = usb_buffer_alloc(udev, sizeof(*(dev->ctl_req)),
+ GFP_KERNEL, &dev->ctl_req_dma);
+ if (dev->ctl_req == NULL)
+ goto err;
+
+ /* allocate urb structures */
+ dev->urb_irq = usb_alloc_urb(0, GFP_KERNEL);
+ if (dev->urb_irq == NULL)
+ goto err;
+
+ dev->urb_ctl = usb_alloc_urb(0, GFP_KERNEL);
+ if (dev->urb_ctl == NULL)
+ goto err;
+
+ /* get a handle to the interrupt data pipe */
+ pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
+ ret = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
+ if (ret != USB_PKT_LEN)
+ err("invalid payload size %d, expected %d", ret, USB_PKT_LEN);
+
+ /* initialise irq urb */
+ usb_fill_int_urb(dev->urb_irq, udev, pipe, dev->irq_data,
+ USB_PKT_LEN,
+ urb_irq_callback, dev, endpoint->bInterval);
+ dev->urb_irq->transfer_dma = dev->irq_dma;
+ dev->urb_irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+ dev->urb_irq->dev = udev;
+
+ /* initialise ctl urb */
+ dev->ctl_req->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE |
+ USB_DIR_OUT;
+ dev->ctl_req->bRequest = USB_REQ_SET_CONFIGURATION;
+ dev->ctl_req->wValue = cpu_to_le16(0x200);
+ dev->ctl_req->wIndex = cpu_to_le16(interface->desc.bInterfaceNumber);
+ dev->ctl_req->wLength = cpu_to_le16(USB_PKT_LEN);
+
+ usb_fill_control_urb(dev->urb_ctl, udev, usb_sndctrlpipe(udev, 0),
+ (void *)dev->ctl_req, dev->ctl_data, USB_PKT_LEN,
+ urb_ctl_callback, dev);
+ dev->urb_ctl->setup_dma = dev->ctl_req_dma;
+ dev->urb_ctl->transfer_dma = dev->ctl_dma;
+ dev->urb_ctl->transfer_flags |= URB_NO_SETUP_DMA_MAP |
+ URB_NO_TRANSFER_DMA_MAP;
+ dev->urb_ctl->dev = udev;
+
+ /* find out the physical bus location */
+ usb_make_path(udev, dev->phys, sizeof(dev->phys));
+ strlcat(dev->phys, "/input0", sizeof(dev->phys));
+
+ /* register settings for the input device */
+ input_dev->name = nfo->name;
+ input_dev->phys = dev->phys;
+ usb_to_input_id(udev, &input_dev->id);
+ input_dev->dev.parent = &intf->dev;
+
+ input_set_drvdata(input_dev, dev);
+ input_dev->open = input_open;
+ input_dev->close = input_close;
+ input_dev->event = input_ev;
+
+ /* register available key events */
+ input_dev->evbit[0] = BIT_MASK(EV_KEY);
+ for (i = 0; i < 256; i++) {
+ int k = keymap(i);
+ if (k >= 0) {
+ set_bit(k & 0xff, input_dev->keybit);
+ if (k >> 8)
+ set_bit(k >> 8, input_dev->keybit);
+ }
+ }
+
+ input_dev->evbit[0] |= BIT_MASK(EV_SND);
+ input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE);
+
+ ret = input_register_device(dev->idev);
+ if (ret)
+ goto err;
+
+ usb_set_intfdata(intf, dev);
+
+ return 0;
+
+ err:
+ return usb_cleanup(dev, -ENOMEM);
+}
+
+static struct usb_driver cm109_driver = {
+ .name = "cm109",
+ .probe = usb_probe,
+ .disconnect = usb_disconnect,
+ .id_table = usb_table,
+};
+
+static int __init cm109_dev_init(void)
+{
+ int ret;
+
+ /* Load the phone keymap */
+ if (0 == strcasecmp(phone, "kip1000")) {
+ keymap = keymap_kip1000;
+ info("Keymap for Komunikate KIP1000 phone loaded");
+ }
+ else if (0 == strcasecmp(phone, "gtalk")) {
+ keymap = keymap_gtalk;
+ info("Keymap for Genius G-talk phone loaded");
+ }
+ else {
+ err("Unsupported phone: %s", phone);
+ return -EINVAL;
+ }
+
+ ret = usb_register(&cm109_driver);
+ if (ret == 0)
+ info(DRIVER_DESC ": " DRIVER_VERSION " (C) " DRIVER_AUTHOR);
+
+ return ret;
+}
+
+static void __exit cm109_dev_exit(void)
+{
+ usb_deregister(&cm109_driver);
+}
+
+module_init(cm109_dev_init);
+module_exit(cm109_dev_exit);
+
+MODULE_DEVICE_TABLE(usb, usb_table);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
diff -uprN -X linux-2.6.24/Documentation/dontdiff linux-2.6.24-orig/drivers/input/misc/Kconfig linux-2.6.24/drivers/input/misc/Kconfig
--- linux-2.6.24-orig/drivers/input/misc/Kconfig 2008-01-24 23:58:37.000000000 +0100
+++ linux-2.6.24/drivers/input/misc/Kconfig 2008-02-07 19:14:26.000000000 +0100
@@ -166,6 +166,18 @@ config INPUT_YEALINK
To compile this driver as a module, choose M here: the module will be
called yealink.
+config INPUT_CM109
+ tristate "C-Media CM109 USB I/O Controller"
+ depends on INPUT && EXPERIMENTAL
+ select USB
+ ---help---
+ Say Y here if you want to enable keyboard and buzzer functions of the
+ C-Media CM109 usb phones. The audio part is enabled by the generic
+ usb sound driver, so you might want to enable that as well.
+
+ To compile this driver as a module, choose M here: the module will be
+ called cm109.
+
config INPUT_UINPUT
tristate "User level driver support"
help
diff -uprN -X linux-2.6.24/Documentation/dontdiff linux-2.6.24-orig/drivers/input/misc/Makefile linux-2.6.24/drivers/input/misc/Makefile
--- linux-2.6.24-orig/drivers/input/misc/Makefile 2008-01-24 23:58:37.000000000 +0100
+++ linux-2.6.24/drivers/input/misc/Makefile 2008-02-07 19:14:26.000000000 +0100
@@ -16,5 +16,6 @@ obj-$(CONFIG_INPUT_ATI_REMOTE2) += ati_
obj-$(CONFIG_INPUT_KEYSPAN_REMOTE) += keyspan_remote.o
obj-$(CONFIG_INPUT_POWERMATE) += powermate.o
obj-$(CONFIG_INPUT_YEALINK) += yealink.o
+obj-$(CONFIG_INPUT_CM109) += cm109.o
obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o
obj-$(CONFIG_INPUT_UINPUT) += uinput.o
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