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Message-ID: <4898C3D8.4010004@db.org>
Date: Tue, 05 Aug 2008 23:19:20 +0200
From: "Alfred E. Heggestad" <aeh@...org>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>
CC: Oliver Neukum <oliver@...kum.org>, linux-input@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] input: driver for USB VoIP phones with CM109 chipset
#2
Dmitry Torokhov wrote:
> On Tue, Aug 05, 2008 at 09:23:46PM +0200, Alfred E. Heggestad wrote:
>> Aug 5 21:11:13 io kernel: cm109: cm109_urb_ctl_callback: buzzer_pending=0, ctl_urb_pending=1
>> Aug 5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: reserve dev 2 ep83-INT, period 32, phase 16, 14 us
>>
>
> Ok, so urb_irq is pending here...
>
>> ;;;
>> ;;; Press 'TAB' in shell to force Bell/Buzzer
>> ;;;
>>
>> Aug 5 21:11:22 io kernel: cm109: cm109_toggle_buzzer_async: ctl_urb_pending=0 buzzer_pending=0
>> Aug 5 21:11:22 io kernel: cm109: cm109_submit_buzz_toggle: buzzer_state=1
>> Aug 5 21:11:22 io kernel: cm109: cm109_urb_ctl_callback: buzzer_pending=0, ctl_urb_pending=1
>> Aug 5 21:11:22 io kernel: cm109: cm109_urb_ctl_callback: usb_submit_urb (urb_irq) failed -22 <--- note -EINVAL
>
> And we trying to re-submit it.... How about the patch below?
>
thanks, that fixes the problem. the error from usb_submit_urb() is gone..
although in your original patch, the irq_urb_pending flag was never set :)
I set it before calling usb_submit_urb(dev->urb_irq, GFP_ATOMIC); and now
it works very well.
I send a new complete CM109 patch below, hope things are working better
this time.. your input has been appreciated!
Input: driver for USB VoIP phones with CM109 chipset
Signed-off-by: Alfred E. Heggestad <aeh@...org>
---
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index e99b788..987e4b7 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -180,6 +180,18 @@ 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 --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
index f48009b..d7db2ae 100644
--- a/drivers/input/misc/Makefile
+++ b/drivers/input/misc/Makefile
@@ -16,6 +16,7 @@ obj-$(CONFIG_INPUT_ATI_REMOTE2) += ati_remote2.o
obj-$(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-$(CONFIG_INPUT_UINPUT) += uinput.o
obj-$(CONFIG_INPUT_APANEL) += apanel.o
diff --git a/drivers/input/misc/cm109.c b/drivers/input/misc/cm109.c
new file mode 100644
index 0000000..13698c9
--- /dev/null
+++ b/drivers/input/misc/cm109.c
@@ -0,0 +1,959 @@
+/*
+ * Driver for the VoIP USB phones with CM109 chipsets.
+ *
+ * Copyright (C) 2007 - 2008 Alfred E. Heggestad <aeh@...org>
+ *
+ * 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
+ * - Allied-Telesis Corega USBPH01
+ * - carpophone II
+ * - ...
+ *
+ * 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@...il.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 CM109_DEBUG 0
+
+#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, carpo}");
+
+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 */
+ 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;
+ dma_addr_t ctl_req_dma;
+ 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[256];
+
+ 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 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 KEY_RESERVED;
+ }
+}
+
+/*
+ Contributed by Shaun Jackman <sjackman@...il.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 KEY_RESERVED;
+ }
+}
+
+/*
+ * Keymap for Allied-Telesis Corega USBPH01
+ * http://www.alliedtelesis-corega.com/2/1344/1437/1360/chprd.html
+ *
+ * Contributed by july@....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 KEY_RESERVED;
+ }
+}
+
+#if 1
+/*
+ * NOTE: THIS IS WORK-IN-PROGRESS!
+ *
+ * Keymap for carpophone II
+ * http://www.carpo.de/voip/cms/de/en/page_3633.jsp
+ *
+ * Contributed by Stephan Berberig <s.berberig@...or.de>
+ *
+ * carpophone II keyboard matrix:
+ *
+ * + UP
+ * - Vol_up Carpo Vol_down Vol_mute
+ * DOWN
+ *
+ * Talk Hold End
+ * 1 2 3
+ * 4 5 6
+ * 7 8 9
+ * * 0 #
+ *
+ *
+ * The following buttons are handled by the special_keymap() function:
+ * Hold, Vol_down, Vol_up, Vol_mute
+ *
+ * GPIO pin mapping:
+
+ ? -- 8 -- 5 -- 2 --> GPI pin 4 (0x10)
+ | | | |
+ ? -- 9 -- 6 -- 3 --> GPI pin 5 (0x20)
+ | | | |
+ ? --down--BS-- up --> GPI pin 6 (0x40)
+ | | | |
+ ? -volup-ESC-ENTER --> GPI pin 7 (0x80)
+ | | | |
+
+ /|\ /|\ /|\ /|\
+ | | | |
+GPO
+pin: 3 2 1 0
+ 0x8 0x4 0x2 0x1
+ */
+static unsigned short keymap_carpo(int scancode)
+{
+ switch (scancode) { /* phone key: */
+ //case 0xZZ: return KEY_NUMERIC_0; /* 0 */
+ //case 0xZZ: return KEY_NUMERIC_1; /* 1 */
+ case 0x11: return KEY_NUMERIC_2; /* 2 */
+ case 0x21: return KEY_NUMERIC_3; /* 3 */
+ //case 0xZZ: return KEY_NUMERIC_4; /* 4 */
+ case 0x12: return KEY_NUMERIC_5; /* 5 */
+ case 0x22: return KEY_NUMERIC_6; /* 6 */
+ //case 0xZZ: return KEY_NUMERIC_7; /* 7 */
+ case 0x14: return KEY_NUMERIC_8; /* 8 */
+ case 0x24: return KEY_NUMERIC_9; /* 9 */
+ case 0x81: return KEY_ENTER; /* Talk */
+ case 0x82: return KEY_ESC; /* End */
+ case 0x41: return KEY_UP; /* up */
+ case 0x44: return KEY_DOWN; /* down */
+ case 0x42: return KEY_BACKSPACE; /* Carpo */
+ case 0x84: return KEY_VOLUMEUP; /* + */
+ //case 0xZZ: return KEY_VOLUMEDOWN; /* - */
+ //case 0xZZ: return KEY_NUMERIC_POUND; /* # */
+ //case 0xZZ: return KEY_NUMERIC_STAR; /* * */
+ default: return KEY_RESERVED;
+ }
+}
+#endif
+
+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);
+}
+
+static unsigned short special_keymap(int code)
+{
+ switch (code) {
+ case RECORD_MUTE: return KEY_MUTE;
+ case PLAYBACK_MUTE: return KEY_MUTE;
+ case VOLUME_DOWN: return KEY_VOLUMEDOWN;
+ case VOLUME_UP: return KEY_VOLUMEUP;
+ default: return KEY_RESERVED;
+ }
+}
+
+
+/******************************************************************************
+ * 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)
+ err("%s: usb_submit_urb (urb_ctl) failed %d", __func__, error);
+}
+
+/*
+ * IRQ handler
+ */
+static void cm109_urb_irq_callback(struct urb *urb)
+{
+ struct cm109_dev *dev = urb->context;
+ const int status = urb->status;
+ int error;
+
+#if CM109_DEBUG
+ info("### 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 (status) {
+ if (status == -ESHUTDOWN)
+ return;
+ err("%s: urb status %d", __func__, status);
+ }
+
+ /* Special keys */
+ if (dev->irq_data->byte[HID_IR0] & 0x0f) {
+ const int code = (dev->irq_data->byte[HID_IR0] & 0x0f);
+ report_key(dev, special_keymap(code));
+ }
+
+ /* 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:
+
+ spin_lock(&dev->ctl_submit_lock);
+
+ dev->irq_urb_pending = 0;
+
+ if (likely(!dev->shutdown)) {
+
+ 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)
+ err("%s: usb_submit_urb (urb_ctl) failed %d",
+ __func__, error);
+ }
+
+ spin_unlock(&dev->ctl_submit_lock);
+}
+
+static void cm109_urb_ctl_callback(struct urb *urb)
+{
+ struct cm109_dev *dev = urb->context;
+ const int status = urb->status;
+ int error;
+
+#if CM109_DEBUG
+ info("### 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 (status)
+ err("%s: urb status %d", __func__, status);
+
+ spin_lock(&dev->ctl_submit_lock);
+
+ dev->ctl_urb_pending = 0;
+
+ if (likely(!dev->shutdown)) {
+
+ if (dev->buzzer_pending) {
+ 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)
+ err("%s: usb_submit_urb (urb_irq) failed %d",
+ __func__, error);
+ }
+ }
+
+ spin_unlock(&dev->ctl_submit_lock);
+}
+
+static void cm109_toggle_buzzer_async(struct cm109_dev *dev)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&dev->ctl_submit_lock, flags);
+
+ if (dev->ctl_urb_pending) {
+ /* URB completion will resubmit */
+ dev->buzzer_pending = 1;
+ } else {
+ dev->ctl_urb_pending = 1;
+ cm109_submit_buzz_toggle(dev);
+ }
+
+ spin_unlock_irqrestore(&dev->ctl_submit_lock, flags);
+}
+
+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 && error != EINTR)
+ err("%s: usb_control_msg() failed %d", __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) {
+ err("%s - cannot autoresume, result %d",
+ __func__, error);
+ return error;
+ }
+
+ mutex_lock(&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;
+
+ error = usb_submit_urb(dev->urb_ctl, GFP_KERNEL);
+ if (error) {
+ err("%s: usb_submit_urb (urb_ctl) failed %d", __func__, error);
+ } else
+ dev->open = 1;
+
+ mutex_unlock(&dev->pm_mutex);
+
+ if (error)
+ usb_autopm_put_interface(dev->intf);
+
+ return error;
+}
+
+static void cm109_input_close(struct input_dev *idev)
+{
+ struct cm109_dev *dev = input_get_drvdata(idev);
+
+ mutex_lock(&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;
+
+ mutex_unlock(&dev->pm_mutex);
+
+ 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);
+
+#if 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:
+ 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)
+{
+ 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);
+}
+
+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;
+ 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->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_buffer_alloc(udev, USB_PKT_LEN,
+ GFP_KERNEL, &dev->irq_dma);
+ if (!dev->irq_data)
+ goto err_out;
+
+ dev->ctl_data = usb_buffer_alloc(udev, USB_PKT_LEN,
+ GFP_KERNEL, &dev->ctl_dma);
+ if (!dev->ctl_data)
+ goto err_out;
+
+ dev->ctl_req = usb_buffer_alloc(udev, sizeof(*(dev->ctl_req)),
+ GFP_KERNEL, &dev->ctl_req_dma);
+ 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, 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,
+ 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->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 = 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 < 256; i++) {
+ unsigned short k = keymap(i);
+ dev->keymap[i] = k;
+ __set_bit(k, input_dev->keybit);
+ }
+
+ /* special keys */
+ for (i = 0; i < 16; i++) {
+ unsigned short k = special_keymap(i);
+ __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);
+
+ info("cm109: usb_suspend (event=%d)", message.event);
+
+ mutex_lock(&dev->pm_mutex);
+ cm109_stop_traffic(dev);
+ mutex_unlock(&dev->pm_mutex);
+
+ return 0;
+}
+
+static int cm109_usb_resume(struct usb_interface *intf)
+{
+ struct cm109_dev *dev = usb_get_intfdata(intf);
+
+ info("cm109: usb_resume");
+
+ mutex_lock(&dev->pm_mutex);
+ cm109_restore_state(dev);
+ mutex_unlock(&dev->pm_mutex);
+
+ 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;
+ info("Keymap for Komunikate KIP1000 phone loaded");
+ } else if (!strcasecmp(phone, "gtalk")) {
+ keymap = keymap_gtalk;
+ info("Keymap for Genius G-talk phone loaded");
+ } else if (!strcasecmp(phone, "usbph01")) {
+ keymap = keymap_usbph01;
+ info("Keymap for Allied-Telesis Corega USBPH01 phone loaded");
+ } else if (!strcasecmp(phone, "carpo")) {
+ keymap = keymap_carpo;
+ info("Keymap for carpophone II loaded (Incomplete)");
+ } else {
+ err("Unsupported phone: %s", 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;
+
+ info(DRIVER_DESC ": " DRIVER_VERSION " (C) " DRIVER_AUTHOR);
+
+ 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");
--
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