From patchwork Thu Dec 31 05:48:48 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jarod Wilson X-Patchwork-Id: 70348 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.3/8.14.2) with ESMTP id nBV5nY5u007482 for ; Thu, 31 Dec 2009 05:49:34 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752200AbZLaFsx (ORCPT ); Thu, 31 Dec 2009 00:48:53 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751706AbZLaFsw (ORCPT ); Thu, 31 Dec 2009 00:48:52 -0500 Received: from mx1.redhat.com ([209.132.183.28]:44538 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751661AbZLaFsu (ORCPT ); Thu, 31 Dec 2009 00:48:50 -0500 Received: from int-mx05.intmail.prod.int.phx2.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.18]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id nBV5mo7G008697 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Thu, 31 Dec 2009 00:48:50 -0500 Received: from ihatethathostname.lab.bos.redhat.com (ihatethathostname.lab.bos.redhat.com [10.16.43.238]) by int-mx05.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id nBV5mn7C032753 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 31 Dec 2009 00:48:49 -0500 Received: from ihatethathostname.lab.bos.redhat.com (ihatethathostname.lab.bos.redhat.com [127.0.0.1]) by ihatethathostname.lab.bos.redhat.com (8.14.3/8.14.3) with ESMTP id nBV5mmG2016868; Thu, 31 Dec 2009 00:48:48 -0500 Received: (from jarod@localhost) by ihatethathostname.lab.bos.redhat.com (8.14.3/8.14.3/Submit) id nBV5mm8t016867; Thu, 31 Dec 2009 00:48:48 -0500 X-Authentication-Warning: ihatethathostname.lab.bos.redhat.com: jarod set sender to jarod@redhat.com using -f Date: Thu, 31 Dec 2009 00:48:48 -0500 From: Jarod Wilson To: linux-input@vger.kernel.org Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2] input: imon driver for SoundGraph iMON/Antec Veris IR devices Message-ID: <20091231054848.GA16846@redhat.com> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.20 (2009-08-17) X-Scanned-By: MIMEDefang 2.67 on 10.5.11.18 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index 16ec523..1196110 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -319,4 +319,16 @@ config INPUT_PCAP To compile this driver as a module, choose M here: the module will be called pcap_keys. +config INPUT_IMON + tristate "SoundGraph iMON Receiver and Display" + depends on USB_ARCH_HAS_HCD + select USB + select INPUT_SPARSEKMAP + help + Say Y here if you want to use a SoundGraph iMON (aka Antec Veris) + IR Receiver and/or LCD/VFD/VGA display. + + To compile this driver as a module, choose M here: the + module will be called imon. + endif diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index a8b8485..79358ff 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -13,6 +13,7 @@ obj-$(CONFIG_INPUT_CM109) += cm109.o obj-$(CONFIG_INPUT_COBALT_BTNS) += cobalt_btns.o obj-$(CONFIG_INPUT_DM355EVM) += dm355evm_keys.o obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o +obj-$(CONFIG_INPUT_IMON) += imon.o obj-$(CONFIG_INPUT_IXP4XX_BEEPER) += ixp4xx-beeper.o obj-$(CONFIG_INPUT_KEYSPAN_REMOTE) += keyspan_remote.o obj-$(CONFIG_INPUT_M68K_BEEP) += m68kspkr.o diff --git a/drivers/input/misc/imon.c b/drivers/input/misc/imon.c new file mode 100644 index 0000000..9b69966 --- /dev/null +++ b/drivers/input/misc/imon.c @@ -0,0 +1,2429 @@ +/* + * imon.c: input and display driver for SoundGraph iMON IR/VFD/LCD + * + * Copyright(C) 2009 Jarod Wilson + * Portions based on the original lirc_imon driver, + * Copyright(C) 2004 Venky Raju(dev@venky.ws) + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define MOD_AUTHOR "Jarod Wilson " +#define MOD_DESC "Driver for SoundGraph iMON MultiMedia IR/Display" +#define MOD_NAME "imon" +#define MOD_VERSION "0.8" + +#define DISPLAY_MINOR_BASE 144 +#define DEVICE_NAME "lcd%d" + +#define BUF_CHUNK_SIZE 8 +#define BUF_SIZE 128 + +#define BIT_DURATION 250 /* each bit received is 250us */ + +#define IMON_CLOCK_ENABLE_PACKETS 2 +#define IMON_KEY_RELEASE_OFFSET 1000 + +/*** 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); + +/*** G L O B A L S ***/ + +struct imon_context { + struct device *dev; + struct usb_device *usbdev_intf0; + /* Newer devices have two interfaces */ + struct usb_device *usbdev_intf1; + bool display_supported; /* not all controllers do */ + bool display_isopen; /* display port has been opened */ + bool ir_isassociating; /* IR port open for association */ + bool dev_present_intf0; /* USB device presence, interface 0 */ + bool 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 */ + + 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; + bool tx_control; + unsigned char usb_rx_buf[8]; + unsigned char usb_tx_buf[8]; + + struct tx_t { + unsigned char data_buf[35]; /* user data buffer */ + struct completion finished; /* wait for write to finish */ + bool busy; /* write in progress */ + int status; /* status of tx completion */ + } tx; + + u16 vendor; /* usb vendor ID */ + u16 product; /* usb product 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 */ + int ki; /* current input keycode key index */ + u16 kc; /* current input keycode */ + u16 last_keycode; /* last reported input keycode */ + u8 mce_toggle_bit; /* last mce toggle bit */ + int display_type; /* store the display type */ + bool 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]; /* input device name */ + char phys_idev[64]; /* input device phys path */ + struct timer_list itimer; /* input device timer, need for rc6 */ + char name_touch[128]; /* touch screen name */ + char phys_touch[64]; /* touch screen phys path */ + struct timer_list ttimer; /* touch screen timer */ +}; + +#define TOUCH_TIMEOUT (HZ/30) +#define MCE_TIMEOUT_MS 200 + +/* vfd character device file operations */ +static const struct file_operations vfd_fops = { + .owner = THIS_MODULE, + .open = &display_open, + .write = &vfd_write, + .release = &display_close +}; + +/* lcd character device file operations */ +static const struct file_operations lcd_fops = { + .owner = THIS_MODULE, + .open = &display_open, + .write = &lcd_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, +}; + +enum { + IMON_BUTTON_IMON = 0, + IMON_BUTTON_MCE = 1, + IMON_BUTTON_PANEL = 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). This driver only supports + * the ffdc and later devices, which do onboard decoding. + */ +static struct usb_device_id imon_usb_id_table[] = { + /* + * 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) }, + {} +}; + +/* 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) }, + {} +}; + +/* Some iMON devices have no lcd/vfd, don't set one up */ +static struct usb_device_id ir_only_list[] = { + /* 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_vfd_class = { + .name = DEVICE_NAME, + .fops = &vfd_fops, + .minor_base = DISPLAY_MINOR_BASE, +}; + +static struct usb_class_driver imon_lcd_class = { + .name = DEVICE_NAME, + .fops = &lcd_fops, + .minor_base = DISPLAY_MINOR_BASE, +}; + +/* standard imon remote key table */ +static const struct key_entry imon_remote_key_table[] = { + /* keys sorted mostly by frequency of use to optimize lookups */ + { KE_KEY, 0x2a8195b7, { KEY_REWIND } }, + { KE_KEY, 0x298315b7, { KEY_REWIND } }, + { KE_KEY, 0x2b8115b7, { KEY_FASTFORWARD } }, + { KE_KEY, 0x2b8315b7, { KEY_FASTFORWARD } }, + { KE_KEY, 0x2b9115b7, { KEY_PREVIOUS } }, + { KE_KEY, 0x298195b7, { KEY_NEXT } }, + + { KE_KEY, 0x2a8115b7, { KEY_PLAY } }, + { KE_KEY, 0x2a8315b7, { KEY_PLAY } }, + { KE_KEY, 0x2a9115b7, { KEY_PAUSE } }, + { KE_KEY, 0x2b9715b7, { KEY_STOP } }, + { KE_KEY, 0x298115b7, { KEY_RECORD } }, + + { KE_KEY, 0x01008000, { KEY_UP } }, + { KE_KEY, 0x01007f00, { KEY_DOWN } }, + { KE_KEY, 0x01000080, { KEY_LEFT } }, + { KE_KEY, 0x0100007f, { KEY_RIGHT } }, + + { KE_KEY, 0x2aa515b7, { KEY_UP } }, + { KE_KEY, 0x289515b7, { KEY_DOWN } }, + { KE_KEY, 0x29a515b7, { KEY_LEFT } }, + { KE_KEY, 0x2ba515b7, { KEY_RIGHT } }, + + { KE_KEY, 0x0200002c, { KEY_SPACE } }, /* Select/Space */ + { KE_KEY, 0x02000028, { KEY_ENTER } }, + { KE_KEY, 0x288195b7, { KEY_EXIT } }, + { KE_KEY, 0x02000029, { KEY_ESC } }, + { KE_KEY, 0x0200002a, { KEY_BACKSPACE } }, + + { KE_KEY, 0x2b9595b7, { KEY_MUTE } }, + { KE_KEY, 0x28a395b7, { KEY_VOLUMEUP } }, + { KE_KEY, 0x28a595b7, { KEY_VOLUMEDOWN } }, + { KE_KEY, 0x289395b7, { KEY_CHANNELUP } }, + { KE_KEY, 0x288795b7, { KEY_CHANNELDOWN } }, + + { KE_KEY, 0x0200001e, { KEY_NUMERIC_1 } }, + { KE_KEY, 0x0200001f, { KEY_NUMERIC_2 } }, + { KE_KEY, 0x02000020, { KEY_NUMERIC_3 } }, + { KE_KEY, 0x02000021, { KEY_NUMERIC_4 } }, + { KE_KEY, 0x02000022, { KEY_NUMERIC_5 } }, + { KE_KEY, 0x02000023, { KEY_NUMERIC_6 } }, + { KE_KEY, 0x02000024, { KEY_NUMERIC_7 } }, + { KE_KEY, 0x02000025, { KEY_NUMERIC_8 } }, + { KE_KEY, 0x02000026, { KEY_NUMERIC_9 } }, + { KE_KEY, 0x02000027, { KEY_NUMERIC_0 } }, + + { KE_KEY, 0x02200025, { KEY_NUMERIC_STAR } }, + { KE_KEY, 0x02200020, { KEY_NUMERIC_POUND } }, + + { KE_KEY, 0x2b8515b7, { KEY_VIDEO } }, + { KE_KEY, 0x299195b7, { KEY_AUDIO } }, + { KE_KEY, 0x2ba115b7, { KEY_CAMERA } }, + { KE_KEY, 0x28a515b7, { KEY_TV } }, + { KE_KEY, 0x29a395b7, { KEY_DVD } }, + { KE_KEY, 0x29a295b7, { KEY_DVD } }, + + /* the Menu key between DVD and Subtitle on the RM-200... */ + { KE_KEY, 0x2ba385b7, { KEY_MENU } }, + { KE_KEY, 0x2ba395b7, { KEY_MENU } }, + + { KE_KEY, 0x288515b7, { KEY_BOOKMARKS } }, + { KE_KEY, 0x2ab715b7, { KEY_MEDIA } }, /* Thumbnail */ + { KE_KEY, 0x298595b7, { KEY_SUBTITLE } }, + { KE_KEY, 0x2b8595b7, { KEY_LANGUAGE } }, + + { KE_KEY, 0x29a595b7, { KEY_ZOOM } }, + { KE_KEY, 0x2aa395b7, { KEY_SCREEN } }, /* FullScreen */ + + { KE_KEY, 0x299115b7, { KEY_KEYBOARD } }, + { KE_KEY, 0x299135b7, { KEY_KEYBOARD } }, + + { KE_KEY, 0x01010000, { BTN_LEFT } }, + { KE_KEY, 0x01020000, { BTN_RIGHT } }, + { KE_KEY, 0x01010080, { BTN_LEFT } }, + { KE_KEY, 0x01020080, { BTN_RIGHT } }, + + { KE_KEY, 0x2a9395b7, { KEY_CYCLEWINDOWS } }, /* TaskSwitcher */ + { KE_KEY, 0x2b8395b7, { KEY_TIME } }, /* Timer */ + + { KE_KEY, 0x289115b7, { KEY_POWER } }, + { KE_KEY, 0x29b195b7, { KEY_EJECTCD } }, /* the one next to play */ + { KE_KEY, 0x299395b7, { KEY_EJECTCLOSECD } }, /* eject (by TaskSw) */ + + { KE_KEY, 0x02800000, { KEY_MENU } }, /* Left Menu */ + { KE_KEY, 0x02000065, { KEY_COMPOSE } }, /* RightMenu */ + { KE_KEY, 0x2ab195b7, { KEY_PROG1 } }, /* Go */ + { KE_KEY, 0x29b715b7, { KEY_DASHBOARD } }, /* AppLauncher */ + { KE_END, 0 } +}; + +/* mce-mode imon mce remote key table */ +static const struct key_entry imon_mce_key_table[] = { + /* keys sorted mostly by frequency of use to optimize lookups */ + { KE_KEY, 0x800f8415, { KEY_REWIND } }, + { KE_KEY, 0x800f8414, { KEY_FASTFORWARD } }, + { KE_KEY, 0x800f841b, { KEY_PREVIOUS } }, + { KE_KEY, 0x800f841a, { KEY_NEXT } }, + + { KE_KEY, 0x800f8416, { KEY_PLAY } }, + { KE_KEY, 0x800f8418, { KEY_PAUSE } }, + { KE_KEY, 0x800f8418, { KEY_PAUSE } }, + { KE_KEY, 0x800f8419, { KEY_STOP } }, + { KE_KEY, 0x800f8417, { KEY_RECORD } }, + + { KE_KEY, 0x02000052, { KEY_UP } }, + { KE_KEY, 0x02000051, { KEY_DOWN } }, + { KE_KEY, 0x02000050, { KEY_LEFT } }, + { KE_KEY, 0x0200004f, { KEY_RIGHT } }, + + { KE_KEY, 0x02000028, { KEY_ENTER } }, +/* the OK and Enter buttons decode to the same value + { KE_KEY, 0x02000028, { KEY_OK } }, */ + { KE_KEY, 0x0200002a, { KEY_EXIT } }, + { KE_KEY, 0x02000029, { KEY_DELETE } }, + + { KE_KEY, 0x800f840e, { KEY_MUTE } }, + { KE_KEY, 0x800f8410, { KEY_VOLUMEUP } }, + { KE_KEY, 0x800f8411, { KEY_VOLUMEDOWN } }, + { KE_KEY, 0x800f8412, { KEY_CHANNELUP } }, + { KE_KEY, 0x800f8413, { KEY_CHANNELDOWN } }, + + { KE_KEY, 0x0200001e, { KEY_NUMERIC_1 } }, + { KE_KEY, 0x0200001f, { KEY_NUMERIC_2 } }, + { KE_KEY, 0x02000020, { KEY_NUMERIC_3 } }, + { KE_KEY, 0x02000021, { KEY_NUMERIC_4 } }, + { KE_KEY, 0x02000022, { KEY_NUMERIC_5 } }, + { KE_KEY, 0x02000023, { KEY_NUMERIC_6 } }, + { KE_KEY, 0x02000024, { KEY_NUMERIC_7 } }, + { KE_KEY, 0x02000025, { KEY_NUMERIC_8 } }, + { KE_KEY, 0x02000026, { KEY_NUMERIC_9 } }, + { KE_KEY, 0x02000027, { KEY_NUMERIC_0 } }, + + { KE_KEY, 0x02200025, { KEY_NUMERIC_STAR } }, + { KE_KEY, 0x02200020, { KEY_NUMERIC_POUND } }, + + { KE_KEY, 0x800f8446, { KEY_TV } }, + { KE_KEY, 0x800f8447, { KEY_AUDIO } }, + { KE_KEY, 0x800f8448, { KEY_PVR } }, /* RecordedTV */ + { KE_KEY, 0x800f8449, { KEY_CAMERA } }, + { KE_KEY, 0x800f844a, { KEY_VIDEO } }, + { KE_KEY, 0x800f8424, { KEY_DVD } }, + { KE_KEY, 0x800f8425, { KEY_TUNER } }, /* LiveTV */ + + { KE_KEY, 0x800f845b, { KEY_RED } }, + { KE_KEY, 0x800f845c, { KEY_GREEN } }, + { KE_KEY, 0x800f845d, { KEY_YELLOW } }, + { KE_KEY, 0x800f845e, { KEY_BLUE } }, + + { KE_KEY, 0x800f840f, { KEY_INFO } }, + { KE_KEY, 0x800f8426, { KEY_EPG } }, /* Guide */ + { KE_KEY, 0x800f845a, { KEY_SUBTITLE } }, /* Caption */ + + { KE_KEY, 0x800f840c, { KEY_POWER } }, + { KE_KEY, 0x800f840d, { KEY_PROG1 } }, /* Windows MCE button */ + { KE_END, 0 } + +}; + +/* imon receiver front panel/knob key table */ +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 }, +}; + +/* to prevent races between open() and disconnect(), probing, etc */ +static DEFINE_MUTEX(driver_lock); + +/* Module bookkeeping bits */ +MODULE_AUTHOR(MOD_AUTHOR); +MODULE_DESCRIPTION(MOD_DESC); +MODULE_VERSION(MOD_VERSION); +MODULE_LICENSE("GPL"); +MODULE_DEVICE_TABLE(usb, imon_usb_id_table); + +static bool debug; +module_param(debug, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(debug, "Debug messages: 0=no, 1=yes(default: no)"); + +/* lcd, vfd, vga or none? should be auto-detected, but can be overridden... */ +static int display_type; +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)"); + +/* IR protocol: native iMON, Windows MCE (RC-6), or iMON w/o PAD stabilize */ +static int ir_protocol; +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)"); + +/* + * 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 bool nomouse; +module_param(nomouse, bool, 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)"); + +/* threshold at which a pad push registers as an arrow key in kbd mode */ +static int pad_thresh; +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)"); + + +static void free_imon_context(struct imon_context *ictx) +{ + struct device *dev = ictx->dev; + + usb_free_urb(ictx->tx_urb); + usb_free_urb(ictx->rx_urb_intf0); + usb_free_urb(ictx->rx_urb_intf1); + kfree(ictx); + + dev_dbg(dev, "%s: iMON context freed\n", __func__); +} + +/** + * 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 *ictx = 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; + } + ictx = usb_get_intfdata(interface); + + if (!ictx) { + err("%s: no context found for minor %d", __func__, subminor); + retval = -ENODEV; + goto exit; + } + + mutex_lock(&ictx->lock); + + if (!ictx->display_supported) { + err("%s: display not supported by device", __func__); + retval = -ENODEV; + } else if (ictx->display_isopen) { + err("%s: display port is already open", __func__); + retval = -EBUSY; + } else { + ictx->display_isopen = 1; + file->private_data = ictx; + dev_dbg(ictx->dev, "display port opened\n"); + } + + mutex_unlock(&ictx->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 *ictx = NULL; + int retval = 0; + + ictx = (struct imon_context *)file->private_data; + + if (!ictx) { + err("%s: no context for device", __func__); + return -ENODEV; + } + + mutex_lock(&ictx->lock); + + if (!ictx->display_supported) { + err("%s: display not supported by device", __func__); + retval = -ENODEV; + } else if (!ictx->display_isopen) { + err("%s: display is not open", __func__); + retval = -EIO; + } else { + ictx->display_isopen = 0; + dev_dbg(ictx->dev, "display port closed\n"); + if (!ictx->dev_present_intf0) { + /* + * Device disconnected before close and IR port is not + * open. If IR port is open, context will be deleted by + * ir_close. + */ + mutex_unlock(&ictx->lock); + free_imon_context(ictx); + return retval; + } + } + + mutex_unlock(&ictx->lock); + return retval; +} + +/** + * Sends a packet to the device -- this function must be called + * with ictx->lock held. + */ +static int send_packet(struct imon_context *ictx) +{ + 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 (!ictx->tx_control) { + pipe = usb_sndintpipe(ictx->usbdev_intf0, + ictx->tx_endpoint->bEndpointAddress); + interval = ictx->tx_endpoint->bInterval; + + usb_fill_int_urb(ictx->tx_urb, ictx->usbdev_intf0, pipe, + ictx->usb_tx_buf, + sizeof(ictx->usb_tx_buf), + usb_tx_callback, ictx, interval); + + ictx->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(ictx->usbdev_intf0, 0); + + /* build the control urb */ + usb_fill_control_urb(ictx->tx_urb, ictx->usbdev_intf0, + pipe, (unsigned char *)control_req, + ictx->usb_tx_buf, + sizeof(ictx->usb_tx_buf), + usb_tx_callback, ictx); + ictx->tx_urb->actual_length = 0; + } + + init_completion(&ictx->tx.finished); + ictx->tx.busy = 1; + smp_rmb(); /* ensure later readers know we're busy */ + + retval = usb_submit_urb(ictx->tx_urb, GFP_KERNEL); + if (retval) { + ictx->tx.busy = 0; + smp_rmb(); /* ensure later readers know we're not busy */ + err("%s: error submitting urb(%d)", __func__, retval); + } else { + /* Wait for transmission to complete (or abort) */ + mutex_unlock(&ictx->lock); + retval = wait_for_completion_interruptible( + &ictx->tx.finished); + if (retval) + err("%s: task interrupted", __func__); + mutex_lock(&ictx->lock); + + retval = ictx->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 *ictx) +{ + int retval; + const unsigned char packet[8] = { 0x01, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x20 }; + + if (!ictx) { + err("%s: no context for device", __func__); + return -ENODEV; + } + + if (!ictx->dev_present_intf0) { + err("%s: no iMON device present", __func__); + return -ENODEV; + } + + memcpy(ictx->usb_tx_buf, packet, sizeof(packet)); + retval = send_packet(ictx); + + 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 *ictx, + 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 (!ictx) { + err("%s: no context for device", __func__); + return -ENODEV; + } + + switch (ictx->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 (ictx->product == 0xffdc) { + 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(ictx->usb_tx_buf, clock_enable_pkt[i], 8); + retval = send_packet(ictx); + 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 *ictx = dev_get_drvdata(d); + + if (!ictx) + return -ENODEV; + + mutex_lock(&ictx->lock); + if (ictx->ir_isassociating) + strcpy(buf, "associating\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(&ictx->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 *ictx; + + ictx = dev_get_drvdata(d); + + if (!ictx) + return -ENODEV; + + mutex_lock(&ictx->lock); + ictx->ir_isassociating = 1; + send_associate_24g(ictx); + mutex_unlock(&ictx->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 *ictx = dev_get_drvdata(d); + size_t len; + + if (!ictx) + return -ENODEV; + + mutex_lock(&ictx->lock); + + if (!ictx->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", ictx->display_isopen ? + "\nNOTE: imon device must be closed\n" : ""); + } + + mutex_unlock(&ictx->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 *ictx = dev_get_drvdata(d); + ssize_t retval; + unsigned int year, month, day, dow, hour, minute, second; + + if (!ictx) + return -ENODEV; + + mutex_lock(&ictx->lock); + + if (!ictx->display_supported) { + retval = -ENODEV; + goto exit; + } else if (ictx->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(ictx, year, month, day, dow, + hour, minute, second); + if (retval) + goto exit; + + retval = count; +exit: + mutex_unlock(&ictx->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 *ictx; + const unsigned char vfd_packet6[] = { + 0x01, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF }; + + ictx = (struct imon_context *)file->private_data; + if (!ictx) { + err("%s: no context for device", __func__); + return -ENODEV; + } + + mutex_lock(&ictx->lock); + + if (!ictx->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(ictx->tx.data_buf, buf, n_bytes)) { + retval = -EFAULT; + goto exit; + } + + /* Pad with spaces */ + for (i = n_bytes; i < 32; ++i) + ictx->tx.data_buf[i] = ' '; + + for (i = 32; i < 35; ++i) + ictx->tx.data_buf[i] = 0xFF; + + offset = 0; + seq = 0; + + do { + memcpy(ictx->usb_tx_buf, ictx->tx.data_buf + offset, 7); + ictx->usb_tx_buf[7] = (unsigned char) seq; + + retval = send_packet(ictx); + if (retval) { + err("%s: send packet failed for packet #%d", + __func__, seq/2); + goto exit; + } else { + seq += 2; + offset += 7; + } + + } while (offset < 35); + + /* Send packet #6 */ + memcpy(ictx->usb_tx_buf, &vfd_packet6, sizeof(vfd_packet6)); + ictx->usb_tx_buf[7] = (unsigned char) seq; + retval = send_packet(ictx); + if (retval) + err("%s: send packet failed for packet #%d", + __func__, seq / 2); + +exit: + mutex_unlock(&ictx->lock); + + return (!retval) ? n_bytes : retval; +} + +/** + * Writes data to the LCD. The iMON OEM LCD screen expects 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 *ictx; + + ictx = (struct imon_context *)file->private_data; + if (!ictx) { + err("%s: no context for device", __func__); + return -ENODEV; + } + + mutex_lock(&ictx->lock); + + if (!ictx->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(ictx->usb_tx_buf, buf, 8)) { + retval = -EFAULT; + goto exit; + } + + retval = send_packet(ictx); + if (retval) { + err("%s: send packet failed!", __func__); + goto exit; + } else { + dev_dbg(ictx->dev, "%s: write %d bytes to LCD\n", + __func__, (int) n_bytes); + } +exit: + mutex_unlock(&ictx->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 *ictx; + + if (!urb) + return; + ictx = (struct imon_context *)urb->context; + if (!ictx) + return; + + ictx->tx.status = urb->status; + + /* notify waiters that write has finished */ + ictx->tx.busy = 0; + smp_rmb(); /* ensure later readers know we're not busy */ + complete(&ictx->tx.finished); +} + +/** + * 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 *ictx) +{ + int retval; + struct device *dev = ictx->dev; + unsigned char ir_proto_packet[] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x86 }; + + switch (ir_protocol) { + case IMON_IR_PROTOCOL_MCE: + dev_dbg(dev, "Configuring IR receiver for MCE protocol\n"); + ir_proto_packet[0] = 0x01; + ictx->ir_protocol = IMON_IR_PROTOCOL_MCE; + ictx->pad_mouse = 0; + break; + case IMON_IR_PROTOCOL_IMON: + dev_dbg(dev, "Configuring IR receiver for iMON protocol\n"); + /* ir_proto_packet[0] = 0x00; // already the default */ + ictx->ir_protocol = IMON_IR_PROTOCOL_IMON; + ictx->pad_mouse = 1; + 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 */ + ictx->ir_protocol = IMON_IR_PROTOCOL_IMON_NOPAD; + ictx->pad_mouse = 0; + break; + default: + dev_info(dev, "%s: unknown IR protocol specified, will " + "just default to iMON protocol\n", __func__); + ictx->ir_protocol = IMON_IR_PROTOCOL_IMON; + ictx->pad_mouse = 1; + break; + } + + memcpy(ictx->usb_tx_buf, &ir_proto_packet, sizeof(ir_proto_packet)); + + retval = send_packet(ictx); + if (retval) { + dev_info(dev, "%s: failed to set IR protocol, falling back " + "to standard iMON protocol mode\n", __func__); + ir_protocol = IMON_IR_PROTOCOL_IMON; + ictx->ir_protocol = IMON_IR_PROTOCOL_IMON; + } +} + +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].code == code) + return i; + + /* Look for the release of a button, return index + offset */ + for (i = 0; i < ARRAY_SIZE(imon_remote_key_table); i++) + if ((imon_remote_key_table[i].code | 0x4000) == code) + return i + IMON_KEY_RELEASE_OFFSET; + + 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].code == code) + return i; + + for (i = 0; i < ARRAY_SIZE(imon_mce_key_table); i++) + if (imon_mce_key_table[i].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; +} + +static bool imon_mouse_event(struct imon_context *ictx, + unsigned char *buf, int len) +{ + char rel_x = 0x00, rel_y = 0x00; + u8 right_shift = 1; + bool mouse_input = 1; + int dir = 0; + + /* newer iMON device PAD or mouse button */ + if (ictx->product != 0xffdc && (buf[0] & 0x01) && len == 5) { + rel_x = buf[2]; + rel_y = buf[3]; + right_shift = 1; + /* 0xffdc iMON PAD or mouse button input */ + } else if (ictx->product == 0xffdc && (buf[0] & 0x40) && + !((buf[1] & 0x01) || ((buf[1] >> 2) & 0x01))) { + 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 (ictx->product == 0xffdc && (buf[0] == 0x68)) { + right_shift = 2; + /* ch+/- buttons, which we use for an emulated scroll wheel */ + } else if (ictx->kc == KEY_CHANNELUP && (buf[2] & 0x40) != 0x40) { + dir = 1; + } else if (ictx->kc == KEY_CHANNELDOWN && (buf[2] & 0x40) != 0x40) { + dir = -1; + } else + mouse_input = 0; + + if (mouse_input) { + dev_dbg(ictx->dev, "sending mouse data via input subsystem\n"); + + if (dir) { + input_report_rel(ictx->idev, REL_WHEEL, dir); + } else if (rel_x || rel_y) { + input_report_rel(ictx->idev, REL_X, rel_x); + input_report_rel(ictx->idev, REL_Y, rel_y); + } else { + input_report_key(ictx->idev, BTN_LEFT, buf[1] & 0x1); + input_report_key(ictx->idev, BTN_RIGHT, + buf[1] >> right_shift & 0x1); + } + input_sync(ictx->idev); + ictx->last_keycode = ictx->kc; + } + + return mouse_input; +} + +static void imon_touch_event(struct imon_context *ictx, unsigned char *buf) +{ + mod_timer(&ictx->ttimer, jiffies + TOUCH_TIMEOUT); + ictx->touch_x = (buf[0] << 4) | (buf[1] >> 4); + ictx->touch_y = 0xfff - ((buf[2] << 4) | (buf[1] & 0xf)); + input_report_abs(ictx->touch, ABS_X, ictx->touch_x); + input_report_abs(ictx->touch, ABS_Y, ictx->touch_y); + input_report_key(ictx->touch, BTN_TOUCH, 0x01); + input_sync(ictx->touch); +} + +static void imon_pad_to_keys(struct imon_context *ictx, unsigned char *buf) +{ + int ki = 1; + int dir = 0; + int offset = IMON_KEY_RELEASE_OFFSET; + char rel_x = 0x00, rel_y = 0x00; + u16 timeout, threshold; + u64 temp_key; + u32 remote_key; + + /* + * 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. We want to down-sample this to only 4 discrete values + * for up/down/left/right arrow keys. 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 (ictx->product != 0xffdc) { + /* first, pad to 8 bytes so it conforms with everything else */ + buf[5] = buf[6] = buf[7] = 0; + timeout = 500; /* in msecs */ + /* (2*threshold) x (2*threshold) square */ + threshold = pad_thresh ? pad_thresh : 28; + rel_x = buf[2]; + rel_y = buf[3]; + + if (ictx->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) { + ictx->kc = KEY_UNKNOWN; + return; + } + buf[2] = dir & 0xFF; + buf[3] = (dir >> 8) & 0xFF; + memcpy(&temp_key, buf, sizeof(temp_key)); + remote_key = (u32) (le64_to_cpu(temp_key) + & 0xffffffff); + ki = imon_remote_key_lookup(remote_key); + ictx->kc = + imon_remote_key_table[ki % offset].keycode; + } + } else { + if (abs(rel_y) > abs(rel_x)) { + buf[2] = (rel_y > 0) ? 0x7F : 0x80; + buf[3] = 0; + ictx->kc = (rel_y > 0) ? KEY_DOWN : KEY_UP; + } else { + buf[2] = 0; + buf[3] = (rel_x > 0) ? 0x7F : 0x80; + ictx->kc = (rel_x > 0) ? KEY_RIGHT : KEY_LEFT; + } + } + + /* + * Handle on-board decoded pad events for e.g. older VFD/iMON-Pad + * device (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. 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, which match the newer devices. + */ + } else { + 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 (ictx->ir_protocol == IMON_IR_PROTOCOL_IMON) { + dir = stabilize((int)rel_x, (int)rel_y, + timeout, threshold); + if (!dir) { + ictx->kc = KEY_UNKNOWN; + return; + } + buf[2] = dir & 0xFF; + buf[3] = (dir >> 8) & 0xFF; + memcpy(&temp_key, buf, sizeof(temp_key)); + remote_key = (u32) (le64_to_cpu(temp_key) & 0xffffffff); + ki = imon_remote_key_lookup(remote_key); + ictx->kc = imon_remote_key_table[ki % offset].keycode; + } else { + if (abs(rel_y) > abs(rel_x)) { + buf[2] = (rel_y > 0) ? 0x7F : 0x80; + buf[3] = 0; + ictx->kc = (rel_y > 0) ? KEY_DOWN : KEY_UP; + } else { + buf[2] = 0; + buf[3] = (rel_x > 0) ? 0x7F : 0x80; + ictx->kc = (rel_x > 0) ? KEY_RIGHT : KEY_LEFT; + } + } + } + + ictx->ki = ki; +} + +static int imon_parse_press_type(struct imon_context *ictx, + unsigned char *buf, u8 ksrc) +{ + int press_type = 0; + + /* key release of 0x02XXXXXX key */ + if (ictx->ki == -1 && buf[0] == 0x02 && buf[3] == 0x00) + ictx->kc = ictx->last_keycode; + + /* mce-specific button handling */ + else if (ksrc == IMON_BUTTON_MCE) { + /* initial press */ + if (ictx->kc != ictx->last_keycode + || buf[2] != ictx->mce_toggle_bit) { + ictx->last_keycode = ictx->kc; + ictx->mce_toggle_bit = buf[2]; + press_type = 1; + mod_timer(&ictx->itimer, + jiffies + msecs_to_jiffies(MCE_TIMEOUT_MS)); + /* repeat */ + } else { + press_type = 2; + mod_timer(&ictx->itimer, + jiffies + msecs_to_jiffies(MCE_TIMEOUT_MS)); + } + + /* incoherent or irrelevant data */ + } else if (ictx->ki == -1) + press_type = -EINVAL; + + /* key release of 0xXXXXXXb7 key */ + else if (ictx->ki >= IMON_KEY_RELEASE_OFFSET) + press_type = 0; + + /* this is a button press */ + else + press_type = 1; + + return press_type; +} + +/** + * Process the incoming packet + */ +static void imon_incoming_packet(struct imon_context *ictx, + struct urb *urb, int intf) +{ + int len = urb->actual_length; + unsigned char *buf = urb->transfer_buffer; + struct device *dev = ictx->dev; + u16 kc; + bool norelease = 0; + int i, ki; + int offset = IMON_KEY_RELEASE_OFFSET; + u64 temp_key; + u64 panel_key = 0; + u32 remote_key; + struct input_dev *idev = NULL; + int press_type = 0; + int msec; + struct timeval t; + static struct timeval prev_time = { 0, 0 }; + u8 ksrc = IMON_BUTTON_IMON; + + idev = ictx->idev; + + /* Figure out what key was pressed */ + memcpy(&temp_key, buf, sizeof(temp_key)); + if (len == 8 && buf[7] == 0xee) { + ksrc = IMON_BUTTON_PANEL; + panel_key = le64_to_cpu(temp_key); + ki = imon_panel_key_lookup(panel_key); + kc = imon_panel_key_table[ki].keycode; + } else { + remote_key = (u32) (le64_to_cpu(temp_key) & 0xffffffff); + if (ictx->ir_protocol == IMON_IR_PROTOCOL_MCE) { + if (buf[0] == 0x80) + ksrc = IMON_BUTTON_MCE; + ki = imon_mce_key_lookup(remote_key); + kc = imon_mce_key_table[ki].keycode; + } else { + ki = imon_remote_key_lookup(remote_key); + kc = imon_remote_key_table[ki % offset].keycode; + } + } + + /* keyboard/mouse mode toggle button */ + if (kc == KEY_KEYBOARD && ki < offset) { + if (!nomouse) { + ictx->pad_mouse = ~(ictx->pad_mouse) & 0x1; + dev_dbg(dev, "toggling to %s mode\n", + ictx->pad_mouse ? "mouse" : "keyboard"); + } else { + ictx->pad_mouse = 0; + dev_dbg(dev, "mouse mode was disabled by modparam\n"); + } + ictx->last_keycode = kc; + return; + } + + ictx->ki = ki; + ictx->kc = kc; + + /* send touchscreen events through input subsystem if touchpad data */ + if (ictx->display_type == IMON_DISPLAY_TYPE_VGA && len == 8 && + buf[7] == 0x86) { + imon_touch_event(ictx, buf); + + /* look for mouse events with pad in mouse mode */ + } else if (ictx->pad_mouse) { + if (imon_mouse_event(ictx, buf, len)) + return; + } + + /* Now for some special handling to convert pad input to arrow keys */ + if (((len == 5) && (buf[0] == 0x01) && (buf[4] == 0x00)) || + ((len == 8) && (buf[0] & 0x40) && + !(buf[1] & 0x1 || buf[1] >> 2 & 0x1))) { + len = 8; + imon_pad_to_keys(ictx, buf); + norelease = 1; + } + + if (debug) { + printk(KERN_INFO "intf%d decoded packet: ", intf); + for (i = 0; i < len; ++i) + printk("%02x ", buf[i]); + printk("\n"); + } + + press_type = imon_parse_press_type(ictx, buf, ksrc); + if (press_type < 0) + goto not_input_data; + + /* KEY_MUTE repeats from MCE and knob need to be suppressed */ + if ((ictx->kc == KEY_MUTE && ictx->kc == ictx->last_keycode) + && (buf[7] == 0xee || ksrc == IMON_BUTTON_MCE)) { + do_gettimeofday(&t); + msec = tv2int(&t, &prev_time); + prev_time = t; + if (msec < 200) + return; + } + + input_report_key(idev, ictx->kc, press_type); + input_sync(idev); + + /* panel keys and some remote keys don't generate a release */ + if (panel_key || norelease) { + input_report_key(idev, ictx->kc, 0); + input_sync(idev); + } + + ictx->last_keycode = ictx->kc; + + return; + +not_input_data: + 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]); + ictx->ir_isassociating = 0; + } +} + +/** + * mce/rc6 keypresses have no distinct release code, use timer + */ +static void imon_mce_timeout(unsigned long data) +{ + struct imon_context *ictx = (struct imon_context *)data; + + input_report_key(ictx->idev, ictx->last_keycode, 0); + input_sync(ictx->idev); +} + +/** + * report touchscreen input + */ +static void imon_touch_display_timeout(unsigned long data) +{ + struct imon_context *ictx = (struct imon_context *)data; + + if (!ictx->display_type == IMON_DISPLAY_TYPE_VGA) + return; + + input_report_abs(ictx->touch, ABS_X, ictx->touch_x); + input_report_abs(ictx->touch, ABS_Y, ictx->touch_y); + input_report_key(ictx->touch, BTN_TOUCH, 0x00); + input_sync(ictx->touch); +} + +/** + * Callback function for USB core API: receive data + */ +static void usb_rx_callback_intf0(struct urb *urb) +{ + struct imon_context *ictx; + unsigned char *buf; + int len; + int intfnum = 0; + + if (!urb) + return; + + ictx = (struct imon_context *)urb->context; + if (!ictx) + return; + + buf = urb->transfer_buffer; + len = urb->actual_length; + + switch (urb->status) { + case -ENOENT: /* usbcore unlink successful! */ + return; + + case -ESHUTDOWN: /* transport endpoint was shut down */ + break; + + case 0: + imon_incoming_packet(ictx, urb, intfnum); + break; + + default: + dev_warn(ictx->dev, "imon %s: status(%d): ignored\n", + __func__, urb->status); + break; + } + + usb_submit_urb(ictx->rx_urb_intf0, GFP_ATOMIC); +} + +static void usb_rx_callback_intf1(struct urb *urb) +{ + struct imon_context *ictx; + unsigned char *buf; + int len; + int intfnum = 1; + + if (!urb) + return; + + ictx = (struct imon_context *)urb->context; + if (!ictx) + return; + + buf = urb->transfer_buffer; + len = urb->actual_length; + + switch (urb->status) { + case -ENOENT: /* usbcore unlink successful! */ + return; + + case -ESHUTDOWN: /* transport endpoint was shut down */ + break; + + case 0: + imon_incoming_packet(ictx, urb, intfnum); + break; + + default: + dev_warn(ictx->dev, "imon %s: status(%d): ignored\n", + __func__, urb->status); + break; + } + + usb_submit_urb(ictx->rx_urb_intf1, GFP_ATOMIC); +} + +static struct input_dev *imon_init_idev(struct imon_context *ictx) +{ + struct input_dev *idev; + int ret, i; + + idev = input_allocate_device(); + if (!idev) { + dev_err(ictx->dev, "remote input dev allocation failed\n"); + goto idev_alloc_failed; + } + + snprintf(ictx->name_idev, sizeof(ictx->name_idev), + "iMON Remote (%04x:%04x)", ictx->vendor, ictx->product); + idev->name = ictx->name_idev; + + usb_make_path(ictx->usbdev_intf0, ictx->phys_idev, + sizeof(ictx->phys_idev)); + strlcat(ictx->phys_idev, "/input0", sizeof(ictx->phys_idev)); + idev->phys = ictx->phys_idev; + + idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); + + idev->keybit[BIT_WORD(BTN_MOUSE)] = + BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); + idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y) | + BIT_MASK(REL_WHEEL); + + input_set_drvdata(idev, ictx); + + if (ir_protocol == IMON_IR_PROTOCOL_MCE) + ret = sparse_keymap_setup(idev, imon_mce_key_table, NULL); + else + ret = sparse_keymap_setup(idev, imon_remote_key_table, NULL); + if (ret) + goto keymap_failed; + + /* can't use sparse keymap atm, 64-bit keycodes */ + for (i = 0; i < ARRAY_SIZE(imon_panel_key_table); i++) { + u16 kc = imon_panel_key_table[i].keycode; + __set_bit(kc, idev->keybit); + } + + usb_to_input_id(ictx->usbdev_intf0, &idev->id); + idev->dev.parent = ictx->dev; + ret = input_register_device(idev); + if (ret < 0) { + dev_err(ictx->dev, "remote input dev register failed\n"); + goto idev_register_failed; + } + + return idev; + +idev_register_failed: + sparse_keymap_free(idev); +keymap_failed: + input_free_device(idev); +idev_alloc_failed: + + return NULL; +} + +static struct input_dev *imon_init_touch(struct imon_context *ictx) +{ + struct input_dev *touch; + int ret; + + touch = input_allocate_device(); + if (!touch) { + dev_err(ictx->dev, "touchscreen input dev allocation failed\n"); + goto touch_alloc_failed; + } + + snprintf(ictx->name_touch, sizeof(ictx->name_touch), + "iMON USB Touchscreen (%04x:%04x)", + ictx->vendor, ictx->product); + touch->name = ictx->name_touch; + + usb_make_path(ictx->usbdev_intf1, ictx->phys_touch, + sizeof(ictx->phys_touch)); + strlcat(ictx->phys_touch, "/input1", sizeof(ictx->phys_touch)); + touch->phys = ictx->phys_touch; + + touch->evbit[0] = + BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); + touch->keybit[BIT_WORD(BTN_TOUCH)] = + BIT_MASK(BTN_TOUCH); + input_set_abs_params(touch, ABS_X, + 0x00, 0xfff, 0, 0); + input_set_abs_params(touch, ABS_Y, + 0x00, 0xfff, 0, 0); + + input_set_drvdata(touch, ictx); + + usb_to_input_id(ictx->usbdev_intf1, &touch->id); + touch->dev.parent = ictx->dev; + ret = input_register_device(touch); + if (ret < 0) { + dev_info(ictx->dev, "touchscreen input dev register failed\n"); + goto touch_register_failed; + } + + return touch; + +touch_register_failed: + input_free_device(ictx->touch); + mutex_unlock(&ictx->lock); + +touch_alloc_failed: + return NULL; +} + +static bool imon_find_endpoints(struct imon_context *ictx, + struct usb_host_interface *iface_desc) +{ + struct usb_endpoint_descriptor *ep; + struct usb_endpoint_descriptor *rx_endpoint = NULL; + struct usb_endpoint_descriptor *tx_endpoint = NULL; + int ifnum = iface_desc->desc.bInterfaceNumber; + int num_endpts = iface_desc->desc.bNumEndpoints; + int i, ep_dir, ep_type; + bool ir_ep_found = 0; + bool display_ep_found = 0; + bool tx_control = 0; + + /* + * 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) { + 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(ictx->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(ictx->dev, "%s: found display endpoint\n", __func__); + } + } + + if (ifnum == 0) { + ictx->rx_endpoint_intf0 = rx_endpoint; + /* + * tx is used to send characters to lcd/vfd, associate RF + * remotes, set IR protocol, and maybe more... + */ + ictx->tx_endpoint = tx_endpoint; + } else { + ictx->rx_endpoint_intf1 = rx_endpoint; + } + + /* + * 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) { + tx_control = 1; + display_ep_found = 1; + dev_dbg(ictx->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 (ictx->display_type == IMON_DISPLAY_TYPE_NONE) { + display_ep_found = 0; + dev_dbg(ictx->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 (ictx->display_type == IMON_DISPLAY_TYPE_VGA) { + display_ep_found = 0; + dev_dbg(ictx->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__); + + ictx->tx_control = tx_control; + + if (display_ep_found) + ictx->display_supported = 1; + + return ir_ep_found; + +} + +static struct imon_context *imon_init_intf0(struct usb_interface *intf) +{ + struct imon_context *ictx; + struct urb *rx_urb; + struct urb *tx_urb; + struct device *dev = &intf->dev; + struct usb_host_interface *iface_desc; + int ret; + + ictx = kzalloc(sizeof(struct imon_context), GFP_KERNEL); + if (!ictx) { + dev_err(dev, "%s: kzalloc failed for context", __func__); + goto exit; + } + rx_urb = usb_alloc_urb(0, GFP_KERNEL); + if (!rx_urb) { + dev_err(dev, "%s: usb_alloc_urb failed for IR urb", __func__); + goto rx_urb_alloc_failed; + } + tx_urb = usb_alloc_urb(0, GFP_KERNEL); + if (!tx_urb) { + dev_err(dev, "%s: usb_alloc_urb failed for display urb", + __func__); + goto tx_urb_alloc_failed; + } + + mutex_init(&ictx->lock); + + mutex_lock(&ictx->lock); + + if (ir_protocol == IMON_IR_PROTOCOL_MCE) { + init_timer(&ictx->itimer); + ictx->itimer.data = (unsigned long)ictx; + ictx->itimer.function = imon_mce_timeout; + } + + ictx->dev = dev; + ictx->usbdev_intf0 = usb_get_dev(interface_to_usbdev(intf)); + ictx->dev_present_intf0 = 1; + ictx->rx_urb_intf0 = rx_urb; + ictx->tx_urb = tx_urb; + + ictx->vendor = le16_to_cpu(ictx->usbdev_intf0->descriptor.idVendor); + ictx->product = le16_to_cpu(ictx->usbdev_intf0->descriptor.idProduct); + + iface_desc = intf->cur_altsetting; + if (!imon_find_endpoints(ictx, iface_desc)) + goto find_endpoint_failed; + + ictx->idev = imon_init_idev(ictx); + if (!ictx->idev) { + dev_err(dev, "%s: input device setup failed\n", __func__); + goto idev_setup_failed; + } + + usb_fill_int_urb(ictx->rx_urb_intf0, ictx->usbdev_intf0, + usb_rcvintpipe(ictx->usbdev_intf0, + ictx->rx_endpoint_intf0->bEndpointAddress), + ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf), + usb_rx_callback_intf0, ictx, + ictx->rx_endpoint_intf0->bInterval); + + ret = usb_submit_urb(ictx->rx_urb_intf0, GFP_KERNEL); + if (ret) { + err("%s: usb_submit_urb failed for intf0 (%d)", + __func__, ret); + goto urb_submit_failed; + } + + return ictx; + +urb_submit_failed: + sparse_keymap_free(ictx->idev); + input_unregister_device(ictx->idev); + input_free_device(ictx->idev); +idev_setup_failed: +find_endpoint_failed: + mutex_unlock(&ictx->lock); + usb_free_urb(tx_urb); +tx_urb_alloc_failed: + usb_free_urb(rx_urb); +rx_urb_alloc_failed: + kfree(ictx); +exit: + dev_err(dev, "unable to initialize intf0, err %d\n", ret); + + return NULL; +} + +static struct imon_context *imon_init_intf1(struct usb_interface *intf, + struct imon_context *ictx) +{ + struct urb *rx_urb; + struct usb_host_interface *iface_desc; + int ret; + + rx_urb = usb_alloc_urb(0, GFP_KERNEL); + if (!rx_urb) { + err("%s: usb_alloc_urb failed for IR urb", __func__); + ret = -ENOMEM; + goto rx_urb_alloc_failed; + } + + mutex_lock(&ictx->lock); + + if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) { + init_timer(&ictx->ttimer); + ictx->ttimer.data = (unsigned long)ictx; + ictx->ttimer.function = imon_touch_display_timeout; + } + + ictx->usbdev_intf1 = usb_get_dev(interface_to_usbdev(intf)); + ictx->dev_present_intf1 = 1; + ictx->rx_urb_intf1 = rx_urb; + + iface_desc = intf->cur_altsetting; + if (!imon_find_endpoints(ictx, iface_desc)) + goto find_endpoint_failed; + + if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) { + ictx->touch = imon_init_touch(ictx); + if (!ictx->touch) + goto touch_setup_failed; + } else + ictx->touch = NULL; + + usb_fill_int_urb(ictx->rx_urb_intf1, ictx->usbdev_intf1, + usb_rcvintpipe(ictx->usbdev_intf1, + ictx->rx_endpoint_intf1->bEndpointAddress), + ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf), + usb_rx_callback_intf1, ictx, + ictx->rx_endpoint_intf1->bInterval); + + ret = usb_submit_urb(ictx->rx_urb_intf1, GFP_KERNEL); + + if (ret) { + err("%s: usb_submit_urb failed for intf1 (%d)", + __func__, ret); + goto urb_submit_failed; + } + + return ictx; + +urb_submit_failed: + if (ictx->touch) { + input_unregister_device(ictx->touch); + input_free_device(ictx->touch); + } +touch_setup_failed: +find_endpoint_failed: + mutex_unlock(&ictx->lock); + usb_free_urb(rx_urb); +rx_urb_alloc_failed: + dev_err(ictx->dev, "unable to initialize intf0, err %d\n", ret); + + return NULL; +} + +static void imon_set_display_type(struct imon_context *ictx, + struct usb_interface *intf) +{ + int configured_display_type = IMON_DISPLAY_TYPE_VFD; + + /* + * 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(intf, lcd_device_list)) + configured_display_type = IMON_DISPLAY_TYPE_LCD; + else if (usb_match_id(intf, imon_touchscreen_list)) + configured_display_type = IMON_DISPLAY_TYPE_VGA; + else if (usb_match_id(intf, 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(ictx->dev, "%s: overriding display type to %d via " + "modparam\n", __func__, display_type); + } + + ictx->display_type = configured_display_type; +} + +static void imon_init_display(struct imon_context *ictx, + struct usb_interface *intf) +{ + int ret; + const unsigned char fp_packet[] = { 0x40, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x88 }; + + dev_dbg(ictx->dev, "Registering iMON display with sysfs\n"); + + /* set up sysfs entry for built-in clock */ + ret = sysfs_create_group(&intf->dev.kobj, + &imon_display_attribute_group); + if (ret) + dev_err(ictx->dev, "Could not create display sysfs " + "entries(%d)", ret); + + if (ictx->display_type == IMON_DISPLAY_TYPE_LCD) + ret = usb_register_dev(intf, &imon_lcd_class); + else + ret = usb_register_dev(intf, &imon_vfd_class); + if (ret) + /* Not a fatal error, so ignore */ + dev_info(ictx->dev, "could not get a minor number for " + "display\n"); + + /* Enable front-panel buttons and/or knobs */ + memcpy(ictx->usb_tx_buf, &fp_packet, sizeof(fp_packet)); + ret = send_packet(ictx); + /* Not fatal, but warn about it */ + if (ret) + dev_info(ictx->dev, "failed to enable front-panel " + "buttons and/or knobs\n"); +} + +/** + * Callback function for USB core API: Probe + */ +static int __devinit 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_interface *first_if; + struct device *dev = &interface->dev; + int ifnum, code_length, sysfs_err; + int ret = 0; + struct imon_context *ictx = NULL; + struct imon_context *first_if_ctx = NULL; + u16 vendor, product; + + code_length = BUF_CHUNK_SIZE * 8; + + usbdev = usb_get_dev(interface_to_usbdev(interface)); + iface_desc = interface->cur_altsetting; + 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_ctx = (struct imon_context *)usb_get_intfdata(first_if); + + + if (ifnum == 0) { + ictx = imon_init_intf0(interface); + if (!ictx) { + err("%s: failed to initialize context!\n", __func__); + ret = -ENODEV; + goto fail; + } + + imon_set_display_type(ictx, interface); + + if (ictx->display_supported) + imon_init_display(ictx, interface); + + if (product == 0xffdc) { + /* RF products *also* use 0xffdc... sigh... */ + 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); + } + + } else { + /* this is the secondary interface on the device */ + ictx = imon_init_intf1(interface, first_if_ctx); + if (!ictx) { + err("%s: failed to attach to context!\n", __func__); + ret = -ENODEV; + goto fail; + } + + } + + usb_set_intfdata(interface, ictx); + + /* set IR protocol/remote type */ + imon_set_ir_protocol(ictx); + + dev_info(dev, "iMON device (%04x:%04x, intf%d) on " + "usb<%d:%d> initialized\n", vendor, product, ifnum, + usbdev->bus->busnum, usbdev->devnum); + + mutex_unlock(&ictx->lock); + mutex_unlock(&driver_lock); + + return 0; + +fail: + mutex_unlock(&driver_lock); + dev_err(dev, "unable to register, err %d\n", ret); + + return ret; +} + +/** + * Callback function for USB core API: disconnect + */ +static void __devexit imon_disconnect(struct usb_interface *interface) +{ + struct imon_context *ictx; + struct device *dev; + int ifnum; + + /* prevent races with multi-interface device probing and display_open */ + mutex_lock(&driver_lock); + + ictx = usb_get_intfdata(interface); + dev = ictx->dev; + ifnum = interface->cur_altsetting->desc.bInterfaceNumber; + + mutex_lock(&ictx->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 (ictx->tx.busy) { + usb_kill_urb(ictx->tx_urb); + complete_all(&ictx->tx.finished); + } + + if (ifnum == 0) { + ictx->dev_present_intf0 = 0; + usb_kill_urb(ictx->rx_urb_intf0); + sparse_keymap_free(ictx->idev); + input_unregister_device(ictx->idev); + if (ictx->display_supported) { + if (ictx->display_type == IMON_DISPLAY_TYPE_LCD) + usb_deregister_dev(interface, &imon_lcd_class); + else + usb_deregister_dev(interface, &imon_vfd_class); + } + } else { + ictx->dev_present_intf1 = 0; + usb_kill_urb(ictx->rx_urb_intf1); + if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) + input_unregister_device(ictx->touch); + } + + if (!ictx->dev_present_intf0 && !ictx->dev_present_intf1) { + if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) + del_timer_sync(&ictx->ttimer); + mutex_unlock(&ictx->lock); + if (!ictx->display_isopen) + free_imon_context(ictx); + } else { + if (ictx->ir_protocol == IMON_IR_PROTOCOL_MCE) + del_timer_sync(&ictx->itimer); + mutex_unlock(&ictx->lock); + } + + mutex_unlock(&driver_lock); + + dev_dbg(dev, "%s: iMON device (intf%d) disconnected\n", + __func__, ifnum); +} + +static int imon_suspend(struct usb_interface *intf, pm_message_t message) +{ + struct imon_context *ictx = usb_get_intfdata(intf); + int ifnum = intf->cur_altsetting->desc.bInterfaceNumber; + + if (ifnum == 0) + usb_kill_urb(ictx->rx_urb_intf0); + else + usb_kill_urb(ictx->rx_urb_intf1); + + return 0; +} + +static int imon_resume(struct usb_interface *intf) +{ + int rc = 0; + struct imon_context *ictx = usb_get_intfdata(intf); + int ifnum = intf->cur_altsetting->desc.bInterfaceNumber; + + if (ifnum == 0) { + usb_fill_int_urb(ictx->rx_urb_intf0, ictx->usbdev_intf0, + usb_rcvintpipe(ictx->usbdev_intf0, + ictx->rx_endpoint_intf0->bEndpointAddress), + ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf), + usb_rx_callback_intf0, ictx, + ictx->rx_endpoint_intf0->bInterval); + + rc = usb_submit_urb(ictx->rx_urb_intf0, GFP_ATOMIC); + + } else { + usb_fill_int_urb(ictx->rx_urb_intf1, ictx->usbdev_intf1, + usb_rcvintpipe(ictx->usbdev_intf1, + ictx->rx_endpoint_intf1->bEndpointAddress), + ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf), + usb_rx_callback_intf1, ictx, + ictx->rx_endpoint_intf1->bInterval); + + rc = usb_submit_urb(ictx->rx_urb_intf1, GFP_ATOMIC); + } + + return rc; +} + +static int __init imon_init(void) +{ + int rc; + + rc = usb_register(&imon_driver); + if (rc) { + err("%s: usb register failed(%d)", __func__, rc); + rc = -ENODEV; + } + + return rc; +} + +static void __exit imon_exit(void) +{ + usb_deregister(&imon_driver); +} + +module_init(imon_init); +module_exit(imon_exit);