* [PATCH 2/2] Input: cm109 - remove driver
2026-11-12 0:16 [PATCH 0/2] Input: remove obsolete cm109 USB phone driver Dmitry Torokhov
2026-11-12 0:16 ` [PATCH 1/2] powerpc/configs: drop CONFIG_INPUT_CM109 from ppc6xx_defconfig Dmitry Torokhov
@ 2026-11-12 0:16 ` Dmitry Torokhov
1 sibling, 0 replies; 3+ messages in thread
From: Dmitry Torokhov @ 2026-11-12 0:16 UTC (permalink / raw)
To: Alfred E . Heggestad, Jiri Kosina, Benjamin Tissoires,
Madhavan Srinivasan, Michael Ellerman, Nicholas Piggin,
Christophe Leroy
Cc: Oliver Neukum, Thomas Reitmayr, Shaun Jackman, Daniel Gimpelevich,
Florian Euchner, Johan Hovold, Javier Carrasco, Xue Lei,
linux-input, linux-usb, linuxppc-dev, linux-kernel
The cm109 driver was written in 2007-2008 (modeled after yealink) for
four mid-2000s USB VoIP/Skype handsets (Komunikate KIP1000, Genius
G-talk, Allied-Telesis Corega USBPH01, and ATCom AU-100) built around
the C-Media CM109 USB audio and HID controller (0x0d8c:0x000e). Audio
was handled by snd-usb-audio, while cm109 polled a 4x4 phone keypad
matrix and drove a buzzer wired to the chip's GPIO pins via vendor HID
reports, relying on a module parameter (phone=...) to select the phone
keymap.
The mid-2000s userspace VoIP/Skype bridge ecosystem for these handsets
is long defunct, the driver has had no new hardware support since 2008
(and has had broken keycodesize = sizeof(unsigned char) for
KEY_NUMERIC_* keycodes > 255), while its custom URB state machine
continues to generate syzbot crashes.
Furthermore, because 0x0d8c:0x000e is the generic C-Media CM109 VID:PID
and was added to hid_ignore_list[] so cm109 could claim the USB
interface, cm109 actively interferes with non-phone CM109 hardware
still in use today. Amateur radio interfaces (Direwolf, AllStarLink,
SVXLink, UniPager, Hamlib) must blacklist cm109 so usbhid can expose
/dev/hidraw* and to prevent cm109 from pulsing the GPIO pins (which
keys the radio transmitter's PTT line) when the input device is
opened. Standard USB headsets with 0x0d8c:0x000e can use usbhid
directly via the chip's standard HID Consumer Page volume and mute
descriptors once the hid_ignore_list[] entry is removed. Remove the
driver, its Kconfig and Makefile entries, and the HID ignore-list
entry.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
drivers/hid/hid-ids.h | 1 -
drivers/hid/hid-quirks.c | 1 -
drivers/input/misc/Kconfig | 12 -
drivers/input/misc/Makefile | 1 -
drivers/input/misc/cm109.c | 940 ------------------------------------
5 files changed, 955 deletions(-)
delete mode 100644 drivers/input/misc/cm109.c
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index acfd6fafed73..4f6fe0986b28 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -355,7 +355,6 @@
#define USB_DEVICE_ID_NITROKEY_U2F 0x4287
#define USB_VENDOR_ID_CMEDIA 0x0d8c
-#define USB_DEVICE_ID_CM109 0x000e
#define USB_DEVICE_ID_CMEDIA_HS100B 0x0014
#define USB_DEVICE_ID_CM6533 0x0022
diff --git a/drivers/hid/hid-quirks.c b/drivers/hid/hid-quirks.c
index f4735b0f01ec..d550dff92c66 100644
--- a/drivers/hid/hid-quirks.c
+++ b/drivers/hid/hid-quirks.c
@@ -846,7 +846,6 @@ static const struct hid_device_id hid_ignore_list[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
{ HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
{ HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI4713) },
- { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
{ HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index 955cca77e9fe..b108776ae09e 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -469,18 +469,6 @@ config INPUT_POWERMATE
To compile this driver as a module, choose M here: the
module will be called powermate.
-config INPUT_CM109
- tristate "C-Media CM109 USB I/O Controller"
- depends on USB_ARCH_HAS_HCD
- 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_REGULATOR_HAPTIC
tristate "Regulator haptics support"
depends on REGULATOR
diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
index d4576869aff9..46aadeaba67b 100644
--- a/drivers/input/misc/Makefile
+++ b/drivers/input/misc/Makefile
@@ -26,7 +26,6 @@ obj-$(CONFIG_INPUT_ATMEL_CAPTOUCH) += atmel_captouch.o
obj-$(CONFIG_INPUT_AW86927) += aw86927.o
obj-$(CONFIG_INPUT_BBNSM_PWRKEY) += nxp-bbnsm-pwrkey.o
obj-$(CONFIG_INPUT_BMA150) += bma150.o
-obj-$(CONFIG_INPUT_CM109) += cm109.o
obj-$(CONFIG_INPUT_CMA3000) += cma3000_d0x.o
obj-$(CONFIG_INPUT_CMA3000_I2C) += cma3000_d0x_i2c.o
obj-$(CONFIG_INPUT_COBALT_BTNS) += cobalt_btns.o
diff --git a/drivers/input/misc/cm109.c b/drivers/input/misc/cm109.c
deleted file mode 100644
index 353d3c1d347d..000000000000
--- a/drivers/input/misc/cm109.c
+++ /dev/null
@@ -1,940 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Driver for the VoIP USB phones with CM109 chipsets.
- *
- * Copyright (C) 2007 - 2008 Alfred E. Heggestad <aeh@db.org>
- */
-
-/*
- * Tested devices:
- * - Komunikate KIP1000
- * - Genius G-talk
- * - Allied-Telesis Corega USBPH01
- * - ...
- *
- * This driver is based on the yealink.c driver
- *
- * Thanks to:
- * - Authors of yealink.c
- * - Thomas Reitmayr
- * - Oliver Neukum for good review comments and code
- * - Shaun Jackman <sjackman@gmail.com> for Genius G-talk keymap
- * - Dmitry Torokhov for valuable input and review
- *
- * Todo:
- * - Read/write EEPROM
- */
-
-#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 DRIVER_VERSION "20080805"
-#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, usbph01, atcom}");
-
-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,
-
- /* up to 256 normal keys, up to 15 special key combinations */
- KEYMAP_SIZE = 256 + 15,
-};
-
-/* 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 */
- struct usb_interface *intf;
-
- /* 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;
- struct urb *urb_ctl;
- /*
- * The 3 bitfields below are protected by ctl_submit_lock.
- * They have to be separate since they are accessed from IRQ
- * context.
- */
- unsigned irq_urb_pending:1; /* irq_urb is in flight */
- unsigned ctl_urb_pending:1; /* ctl_urb is in flight */
- unsigned buzzer_pending:1; /* need to issue buzz command */
- spinlock_t ctl_submit_lock;
-
- unsigned char buzzer_state; /* on/off */
-
- /* flags */
- unsigned open:1;
- unsigned resetting:1;
- unsigned shutdown:1;
-
- /* This mutex protects writes to the above flags */
- struct mutex pm_mutex;
-
- unsigned short keymap[KEYMAP_SIZE];
-
- 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
- *****************************************************************************/
-
-static unsigned short special_keymap(int code)
-{
- if (code > 0xff) {
- switch (code - 0xff) {
- case RECORD_MUTE: return KEY_MICMUTE;
- case PLAYBACK_MUTE: return KEY_MUTE;
- case VOLUME_DOWN: return KEY_VOLUMEDOWN;
- case VOLUME_UP: return KEY_VOLUMEUP;
- }
- }
- return KEY_RESERVED;
-}
-
-/* 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 unsigned short keymap_kip1000(int scancode)
-{
- switch (scancode) { /* phone key: */
- case 0x82: return KEY_NUMERIC_0; /* 0 */
- case 0x14: return KEY_NUMERIC_1; /* 1 */
- case 0x12: return KEY_NUMERIC_2; /* 2 */
- case 0x11: return KEY_NUMERIC_3; /* 3 */
- case 0x24: return KEY_NUMERIC_4; /* 4 */
- case 0x22: return KEY_NUMERIC_5; /* 5 */
- case 0x21: return KEY_NUMERIC_6; /* 6 */
- case 0x44: return KEY_NUMERIC_7; /* 7 */
- case 0x42: return KEY_NUMERIC_8; /* 8 */
- case 0x41: return KEY_NUMERIC_9; /* 9 */
- case 0x81: return KEY_NUMERIC_POUND; /* # */
- case 0x84: return KEY_NUMERIC_STAR; /* * */
- case 0x88: return KEY_ENTER; /* pickup */
- case 0x48: return KEY_ESC; /* hangup */
- case 0x28: return KEY_LEFT; /* IN */
- case 0x18: return KEY_RIGHT; /* OUT */
- default: return special_keymap(scancode);
- }
-}
-
-/*
- Contributed by Shaun Jackman <sjackman@gmail.com>
-
- 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 unsigned short keymap_gtalk(int scancode)
-{
- switch (scancode) {
- case 0x11: return KEY_NUMERIC_0;
- case 0x21: return KEY_NUMERIC_1;
- case 0x41: return KEY_NUMERIC_2;
- case 0x81: return KEY_NUMERIC_3;
- case 0x12: return KEY_NUMERIC_4;
- case 0x22: return KEY_NUMERIC_5;
- case 0x42: return KEY_NUMERIC_6;
- case 0x82: return KEY_NUMERIC_7;
- case 0x14: return KEY_NUMERIC_8;
- case 0x24: return KEY_NUMERIC_9;
- case 0x44: return KEY_NUMERIC_POUND; /* # */
- case 0x84: return KEY_NUMERIC_STAR; /* * */
- 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) */
- default: return special_keymap(scancode);
- }
-}
-
-/*
- * Keymap for Allied-Telesis Corega USBPH01
- * http://www.alliedtelesis-corega.com/2/1344/1437/1360/chprd.html
- *
- * Contributed by july@nat.bg
- */
-static unsigned short keymap_usbph01(int scancode)
-{
- switch (scancode) {
- case 0x11: return KEY_NUMERIC_0; /* 0 */
- case 0x21: return KEY_NUMERIC_1; /* 1 */
- case 0x41: return KEY_NUMERIC_2; /* 2 */
- case 0x81: return KEY_NUMERIC_3; /* 3 */
- case 0x12: return KEY_NUMERIC_4; /* 4 */
- case 0x22: return KEY_NUMERIC_5; /* 5 */
- case 0x42: return KEY_NUMERIC_6; /* 6 */
- case 0x82: return KEY_NUMERIC_7; /* 7 */
- case 0x14: return KEY_NUMERIC_8; /* 8 */
- case 0x24: return KEY_NUMERIC_9; /* 9 */
- case 0x44: return KEY_NUMERIC_POUND; /* # */
- case 0x84: return KEY_NUMERIC_STAR; /* * */
- case 0x18: return KEY_ENTER; /* pickup */
- case 0x28: return KEY_ESC; /* hangup */
- case 0x48: return KEY_LEFT; /* IN */
- case 0x88: return KEY_RIGHT; /* OUT */
- default: return special_keymap(scancode);
- }
-}
-
-/*
- * Keymap for ATCom AU-100
- * http://www.atcom.cn/products.html
- * http://www.packetizer.com/products/au100/
- * http://www.voip-info.org/wiki/view/AU-100
- *
- * Contributed by daniel@gimpelevich.san-francisco.ca.us
- */
-static unsigned short keymap_atcom(int scancode)
-{
- switch (scancode) { /* phone key: */
- case 0x82: return KEY_NUMERIC_0; /* 0 */
- case 0x11: return KEY_NUMERIC_1; /* 1 */
- case 0x12: return KEY_NUMERIC_2; /* 2 */
- case 0x14: return KEY_NUMERIC_3; /* 3 */
- case 0x21: return KEY_NUMERIC_4; /* 4 */
- case 0x22: return KEY_NUMERIC_5; /* 5 */
- case 0x24: return KEY_NUMERIC_6; /* 6 */
- case 0x41: return KEY_NUMERIC_7; /* 7 */
- case 0x42: return KEY_NUMERIC_8; /* 8 */
- case 0x44: return KEY_NUMERIC_9; /* 9 */
- case 0x84: return KEY_NUMERIC_POUND; /* # */
- case 0x81: return KEY_NUMERIC_STAR; /* * */
- case 0x18: return KEY_ENTER; /* pickup */
- case 0x28: return KEY_ESC; /* hangup */
- case 0x48: return KEY_LEFT; /* left arrow */
- case 0x88: return KEY_RIGHT; /* right arrow */
- default: return special_keymap(scancode);
- }
-}
-
-static unsigned short (*keymap)(int) = keymap_kip1000;
-
-/*
- * Completes a request by converting the data into events for the
- * input subsystem.
- */
-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, 0);
- }
-
- dev->key_code = key;
- if (key >= 0) {
- /* new valid key */
- input_report_key(idev, key, 1);
- }
-
- input_sync(idev);
-}
-
-/*
- * Converts data of special key presses (volume, mute) into events
- * for the input subsystem, sends press-n-release for mute keys.
- */
-static void cm109_report_special(struct cm109_dev *dev)
-{
- static const u8 autorelease = RECORD_MUTE | PLAYBACK_MUTE;
- struct input_dev *idev = dev->idev;
- u8 data = dev->irq_data->byte[HID_IR0];
- unsigned short keycode;
- int i;
-
- for (i = 0; i < 4; i++) {
- keycode = dev->keymap[0xff + BIT(i)];
- if (keycode == KEY_RESERVED)
- continue;
-
- input_report_key(idev, keycode, data & BIT(i));
- if (data & autorelease & BIT(i)) {
- input_sync(idev);
- input_report_key(idev, keycode, 0);
- }
- }
- input_sync(idev);
-}
-
-/******************************************************************************
- * CM109 usb communication interface
- *****************************************************************************/
-
-static void cm109_submit_buzz_toggle(struct cm109_dev *dev)
-{
- int error;
-
- if (dev->buzzer_state)
- dev->ctl_data->byte[HID_OR0] |= BUZZER_ON;
- else
- dev->ctl_data->byte[HID_OR0] &= ~BUZZER_ON;
-
- error = usb_submit_urb(dev->urb_ctl, GFP_ATOMIC);
- if (error)
- dev_err(&dev->intf->dev,
- "%s: usb_submit_urb (urb_ctl) failed %d\n",
- __func__, error);
-}
-
-static void cm109_submit_ctl(struct cm109_dev *dev)
-{
- int error;
-
- guard(spinlock_irqsave)(&dev->ctl_submit_lock);
-
- dev->irq_urb_pending = 0;
-
- if (unlikely(dev->shutdown))
- return;
-
- if (dev->buzzer_state)
- dev->ctl_data->byte[HID_OR0] |= BUZZER_ON;
- else
- dev->ctl_data->byte[HID_OR0] &= ~BUZZER_ON;
-
- dev->ctl_data->byte[HID_OR1] = dev->keybit;
- dev->ctl_data->byte[HID_OR2] = dev->keybit;
-
- dev->buzzer_pending = 0;
- dev->ctl_urb_pending = 1;
-
- error = usb_submit_urb(dev->urb_ctl, GFP_ATOMIC);
- if (error)
- dev_err(&dev->intf->dev,
- "%s: usb_submit_urb (urb_ctl) failed %d\n",
- __func__, error);
-}
-
-/*
- * IRQ handler
- */
-static void cm109_urb_irq_callback(struct urb *urb)
-{
- struct cm109_dev *dev = urb->context;
- const int status = urb->status;
-
- dev_dbg(&dev->intf->dev, "### URB IRQ: [0x%02x 0x%02x 0x%02x 0x%02x] keybit=0x%02x\n",
- dev->irq_data->byte[0],
- dev->irq_data->byte[1],
- dev->irq_data->byte[2],
- dev->irq_data->byte[3],
- dev->keybit);
-
- if (status) {
- if (status == -ESHUTDOWN)
- return;
- dev_err_ratelimited(&dev->intf->dev, "%s: urb status %d\n",
- __func__, status);
- goto out;
- }
-
- /* Special keys */
- cm109_report_special(dev);
-
- /* Scan key column */
- if (dev->keybit == 0xf) {
-
- /* 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, dev->keymap[dev->irq_data->byte[HID_IR1]]);
-
- dev->keybit <<= 1;
- if (dev->keybit > 0x8)
- dev->keybit = 0xf;
- }
-
- out:
- cm109_submit_ctl(dev);
-}
-
-static void cm109_urb_ctl_callback(struct urb *urb)
-{
- struct cm109_dev *dev = urb->context;
- const int status = urb->status;
- int error;
-
- dev_dbg(&dev->intf->dev, "### URB CTL: [0x%02x 0x%02x 0x%02x 0x%02x]\n",
- dev->ctl_data->byte[0],
- dev->ctl_data->byte[1],
- dev->ctl_data->byte[2],
- dev->ctl_data->byte[3]);
-
- if (status) {
- if (status == -ESHUTDOWN)
- return;
- dev_err_ratelimited(&dev->intf->dev, "%s: urb status %d\n",
- __func__, status);
- }
-
- guard(spinlock_irqsave)(&dev->ctl_submit_lock);
-
- dev->ctl_urb_pending = 0;
-
- if (unlikely(dev->shutdown))
- return;
-
- if (dev->buzzer_pending || status) {
- dev->buzzer_pending = 0;
- dev->ctl_urb_pending = 1;
- cm109_submit_buzz_toggle(dev);
- } else if (likely(!dev->irq_urb_pending)) {
- /* ask for key data */
- dev->irq_urb_pending = 1;
- error = usb_submit_urb(dev->urb_irq, GFP_ATOMIC);
- if (error)
- dev_err(&dev->intf->dev,
- "%s: usb_submit_urb (urb_irq) failed %d\n",
- __func__, error);
- }
-}
-
-static void cm109_toggle_buzzer_async(struct cm109_dev *dev)
-{
- guard(spinlock_irqsave)(&dev->ctl_submit_lock);
-
- if (dev->ctl_urb_pending) {
- /* URB completion will resubmit */
- dev->buzzer_pending = 1;
- } else {
- dev->ctl_urb_pending = 1;
- cm109_submit_buzz_toggle(dev);
- }
-}
-
-static void cm109_toggle_buzzer_sync(struct cm109_dev *dev, int on)
-{
- int error;
-
- if (on)
- dev->ctl_data->byte[HID_OR0] |= BUZZER_ON;
- else
- dev->ctl_data->byte[HID_OR0] &= ~BUZZER_ON;
-
- error = usb_control_msg(dev->udev,
- usb_sndctrlpipe(dev->udev, 0),
- dev->ctl_req->bRequest,
- dev->ctl_req->bRequestType,
- le16_to_cpu(dev->ctl_req->wValue),
- le16_to_cpu(dev->ctl_req->wIndex),
- dev->ctl_data,
- USB_PKT_LEN, USB_CTRL_SET_TIMEOUT);
- if (error < 0 && error != -EINTR)
- dev_err(&dev->intf->dev, "%s: usb_control_msg() failed %d\n",
- __func__, error);
-}
-
-static void cm109_stop_traffic(struct cm109_dev *dev)
-{
- dev->shutdown = 1;
- /*
- * Make sure other CPUs see this
- */
- smp_wmb();
-
- usb_kill_urb(dev->urb_ctl);
- usb_kill_urb(dev->urb_irq);
-
- cm109_toggle_buzzer_sync(dev, 0);
-
- dev->shutdown = 0;
- smp_wmb();
-}
-
-static void cm109_restore_state(struct cm109_dev *dev)
-{
- if (dev->open) {
- /*
- * Restore buzzer state.
- * This will also kick regular URB submission
- */
- cm109_toggle_buzzer_async(dev);
- }
-}
-
-/******************************************************************************
- * input event interface
- *****************************************************************************/
-
-static int cm109_input_open(struct input_dev *idev)
-{
- struct cm109_dev *dev = input_get_drvdata(idev);
- int error;
-
- error = usb_autopm_get_interface(dev->intf);
- if (error < 0) {
- dev_err(&idev->dev, "%s - cannot autoresume, result %d\n",
- __func__, error);
- return error;
- }
-
- scoped_guard(mutex, &dev->pm_mutex) {
- dev->buzzer_state = 0;
- 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;
-
- dev->ctl_urb_pending = 1;
- error = usb_submit_urb(dev->urb_ctl, GFP_KERNEL);
- if (!error) {
- dev->open = 1;
- return 0;
- }
- }
-
- dev->ctl_urb_pending = 0;
- usb_autopm_put_interface(dev->intf);
-
- dev_err(&dev->intf->dev, "%s: usb_submit_urb (urb_ctl) failed %d\n",
- __func__, error);
-
- return error;
-}
-
-static void cm109_input_close(struct input_dev *idev)
-{
- struct cm109_dev *dev = input_get_drvdata(idev);
-
- scoped_guard(mutex, &dev->pm_mutex) {
- /*
- * Once we are here event delivery is stopped so we
- * don't need to worry about someone starting buzzer
- * again
- */
- cm109_stop_traffic(dev);
- dev->open = 0;
- }
-
- usb_autopm_put_interface(dev->intf);
-}
-
-static int cm109_input_ev(struct input_dev *idev, unsigned int type,
- unsigned int code, int value)
-{
- struct cm109_dev *dev = input_get_drvdata(idev);
-
- dev_dbg(&dev->intf->dev,
- "input_ev: type=%u code=%u value=%d\n", type, code, value);
-
- if (type != EV_SND)
- return -EINVAL;
-
- switch (code) {
- case SND_TONE:
- case SND_BELL:
- dev->buzzer_state = !!value;
- if (!dev->resetting)
- cm109_toggle_buzzer_async(dev);
- return 0;
-
- default:
- return -EINVAL;
- }
-}
-
-
-/******************************************************************************
- * 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 cm109_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 void cm109_usb_cleanup(struct cm109_dev *dev)
-{
- kfree(dev->ctl_req);
- usb_free_coherent(dev->udev, USB_PKT_LEN, dev->ctl_data, dev->ctl_dma);
- usb_free_coherent(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);
-}
-
-static void cm109_usb_disconnect(struct usb_interface *interface)
-{
- struct cm109_dev *dev = usb_get_intfdata(interface);
-
- usb_set_intfdata(interface, NULL);
- input_unregister_device(dev->idev);
- cm109_usb_cleanup(dev);
-}
-
-static int cm109_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 = NULL;
- int ret, pipe, i;
- int error = -ENOMEM;
-
- interface = intf->cur_altsetting;
-
- if (interface->desc.bNumEndpoints < 1)
- return -ENODEV;
-
- endpoint = &interface->endpoint[0].desc;
-
- if (!usb_endpoint_is_int_in(endpoint))
- return -ENODEV;
-
- dev = kzalloc_obj(*dev);
- if (!dev)
- return -ENOMEM;
-
- spin_lock_init(&dev->ctl_submit_lock);
- mutex_init(&dev->pm_mutex);
-
- dev->udev = udev;
- dev->intf = intf;
-
- dev->idev = input_dev = input_allocate_device();
- if (!input_dev)
- goto err_out;
-
- /* allocate usb buffers */
- dev->irq_data = usb_alloc_coherent(udev, USB_PKT_LEN,
- GFP_KERNEL, &dev->irq_dma);
- if (!dev->irq_data)
- goto err_out;
-
- dev->ctl_data = usb_alloc_coherent(udev, USB_PKT_LEN,
- GFP_KERNEL, &dev->ctl_dma);
- if (!dev->ctl_data)
- goto err_out;
-
- dev->ctl_req = kmalloc_obj(*(dev->ctl_req));
- if (!dev->ctl_req)
- goto err_out;
-
- /* allocate urb structures */
- dev->urb_irq = usb_alloc_urb(0, GFP_KERNEL);
- if (!dev->urb_irq)
- goto err_out;
-
- dev->urb_ctl = usb_alloc_urb(0, GFP_KERNEL);
- if (!dev->urb_ctl)
- goto err_out;
-
- /* get a handle to the interrupt data pipe */
- pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
- ret = usb_maxpacket(udev, pipe);
- if (ret != USB_PKT_LEN)
- dev_err(&intf->dev, "invalid payload size %d, expected %d\n",
- ret, USB_PKT_LEN);
-
- /* initialise irq urb */
- usb_fill_int_urb(dev->urb_irq, udev, pipe, dev->irq_data,
- USB_PKT_LEN,
- cm109_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,
- cm109_urb_ctl_callback, dev);
- dev->urb_ctl->transfer_dma = dev->ctl_dma;
- dev->urb_ctl->transfer_flags |= 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 = cm109_input_open;
- input_dev->close = cm109_input_close;
- input_dev->event = cm109_input_ev;
-
- input_dev->keycode = dev->keymap;
- input_dev->keycodesize = sizeof(unsigned char);
- input_dev->keycodemax = ARRAY_SIZE(dev->keymap);
-
- input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_SND);
- input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE);
-
- /* register available key events */
- for (i = 0; i < KEYMAP_SIZE; i++) {
- unsigned short k = keymap(i);
- dev->keymap[i] = k;
- __set_bit(k, input_dev->keybit);
- }
- __clear_bit(KEY_RESERVED, input_dev->keybit);
-
- error = input_register_device(dev->idev);
- if (error)
- goto err_out;
-
- usb_set_intfdata(intf, dev);
-
- return 0;
-
- err_out:
- input_free_device(input_dev);
- cm109_usb_cleanup(dev);
- return error;
-}
-
-static int cm109_usb_suspend(struct usb_interface *intf, pm_message_t message)
-{
- struct cm109_dev *dev = usb_get_intfdata(intf);
-
- dev_info(&intf->dev, "cm109: usb_suspend (event=%d)\n", message.event);
-
- guard(mutex)(&dev->pm_mutex);
-
- cm109_stop_traffic(dev);
-
- return 0;
-}
-
-static int cm109_usb_resume(struct usb_interface *intf)
-{
- struct cm109_dev *dev = usb_get_intfdata(intf);
-
- dev_info(&intf->dev, "cm109: usb_resume\n");
-
- guard(mutex)(&dev->pm_mutex);
-
- cm109_restore_state(dev);
-
- return 0;
-}
-
-static int cm109_usb_pre_reset(struct usb_interface *intf)
-{
- struct cm109_dev *dev = usb_get_intfdata(intf);
-
- mutex_lock(&dev->pm_mutex);
-
- /*
- * Make sure input events don't try to toggle buzzer
- * while we are resetting
- */
- dev->resetting = 1;
- smp_wmb();
-
- cm109_stop_traffic(dev);
-
- return 0;
-}
-
-static int cm109_usb_post_reset(struct usb_interface *intf)
-{
- struct cm109_dev *dev = usb_get_intfdata(intf);
-
- dev->resetting = 0;
- smp_wmb();
-
- cm109_restore_state(dev);
-
- mutex_unlock(&dev->pm_mutex);
-
- return 0;
-}
-
-static struct usb_driver cm109_driver = {
- .name = "cm109",
- .probe = cm109_usb_probe,
- .disconnect = cm109_usb_disconnect,
- .suspend = cm109_usb_suspend,
- .resume = cm109_usb_resume,
- .reset_resume = cm109_usb_resume,
- .pre_reset = cm109_usb_pre_reset,
- .post_reset = cm109_usb_post_reset,
- .id_table = cm109_usb_table,
- .supports_autosuspend = 1,
-};
-
-static int __init cm109_select_keymap(void)
-{
- /* Load the phone keymap */
- if (!strcasecmp(phone, "kip1000")) {
- keymap = keymap_kip1000;
- printk(KERN_INFO KBUILD_MODNAME ": "
- "Keymap for Komunikate KIP1000 phone loaded\n");
- } else if (!strcasecmp(phone, "gtalk")) {
- keymap = keymap_gtalk;
- printk(KERN_INFO KBUILD_MODNAME ": "
- "Keymap for Genius G-talk phone loaded\n");
- } else if (!strcasecmp(phone, "usbph01")) {
- keymap = keymap_usbph01;
- printk(KERN_INFO KBUILD_MODNAME ": "
- "Keymap for Allied-Telesis Corega USBPH01 phone loaded\n");
- } else if (!strcasecmp(phone, "atcom")) {
- keymap = keymap_atcom;
- printk(KERN_INFO KBUILD_MODNAME ": "
- "Keymap for ATCom AU-100 phone loaded\n");
- } else {
- printk(KERN_ERR KBUILD_MODNAME ": "
- "Unsupported phone: %s\n", phone);
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int __init cm109_init(void)
-{
- int err;
-
- err = cm109_select_keymap();
- if (err)
- return err;
-
- err = usb_register(&cm109_driver);
- if (err)
- return err;
-
- printk(KERN_INFO KBUILD_MODNAME ": "
- DRIVER_DESC ": " DRIVER_VERSION " (C) " DRIVER_AUTHOR "\n");
-
- return 0;
-}
-
-static void __exit cm109_exit(void)
-{
- usb_deregister(&cm109_driver);
-}
-
-module_init(cm109_init);
-module_exit(cm109_exit);
-
-MODULE_DEVICE_TABLE(usb, cm109_usb_table);
-
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_LICENSE("GPL");
--
2.56.0.567.gdb80ae8cd5-goog
^ permalink raw reply related [flat|nested] 3+ messages in thread