forked from Minki/linux
276e2ee076
Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2599 lines
70 KiB
C
2599 lines
70 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* imon.c: input and display driver for SoundGraph iMON IR/VFD/LCD
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*
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* Copyright(C) 2010 Jarod Wilson <jarod@wilsonet.com>
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* Portions based on the original lirc_imon driver,
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* Copyright(C) 2004 Venky Raju(dev@venky.ws)
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*
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* Huge thanks to R. Geoff Newbury for invaluable debugging on the
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* 0xffdc iMON devices, and for sending me one to hack on, without
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* which the support for them wouldn't be nearly as good. Thanks
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* also to the numerous 0xffdc device owners that tested auto-config
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* support for me and provided debug dumps from their devices.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/ktime.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/uaccess.h>
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#include <linux/ratelimit.h>
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#include <linux/input.h>
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#include <linux/usb.h>
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#include <linux/usb/input.h>
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#include <media/rc-core.h>
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#include <linux/timer.h>
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#define MOD_AUTHOR "Jarod Wilson <jarod@wilsonet.com>"
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#define MOD_DESC "Driver for SoundGraph iMON MultiMedia IR/Display"
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#define MOD_NAME "imon"
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#define MOD_VERSION "0.9.4"
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#define DISPLAY_MINOR_BASE 144
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#define DEVICE_NAME "lcd%d"
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#define BUF_CHUNK_SIZE 8
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#define BUF_SIZE 128
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#define BIT_DURATION 250 /* each bit received is 250us */
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#define IMON_CLOCK_ENABLE_PACKETS 2
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/*** P R O T O T Y P E S ***/
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/* USB Callback prototypes */
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static int imon_probe(struct usb_interface *interface,
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const struct usb_device_id *id);
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static void imon_disconnect(struct usb_interface *interface);
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static void usb_rx_callback_intf0(struct urb *urb);
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static void usb_rx_callback_intf1(struct urb *urb);
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static void usb_tx_callback(struct urb *urb);
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/* suspend/resume support */
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static int imon_resume(struct usb_interface *intf);
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static int imon_suspend(struct usb_interface *intf, pm_message_t message);
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/* Display file_operations function prototypes */
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static int display_open(struct inode *inode, struct file *file);
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static int display_close(struct inode *inode, struct file *file);
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/* VFD write operation */
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static ssize_t vfd_write(struct file *file, const char __user *buf,
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size_t n_bytes, loff_t *pos);
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/* LCD file_operations override function prototypes */
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static ssize_t lcd_write(struct file *file, const char __user *buf,
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size_t n_bytes, loff_t *pos);
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/*** G L O B A L S ***/
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struct imon_panel_key_table {
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u64 hw_code;
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u32 keycode;
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};
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struct imon_usb_dev_descr {
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__u16 flags;
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#define IMON_NO_FLAGS 0
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#define IMON_NEED_20MS_PKT_DELAY 1
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#define IMON_SUPPRESS_REPEATED_KEYS 2
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struct imon_panel_key_table key_table[];
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};
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struct imon_context {
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struct device *dev;
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/* Newer devices have two interfaces */
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struct usb_device *usbdev_intf0;
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struct usb_device *usbdev_intf1;
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bool display_supported; /* not all controllers do */
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bool display_isopen; /* display port has been opened */
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bool rf_device; /* true if iMON 2.4G LT/DT RF device */
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bool rf_isassociating; /* RF remote associating */
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bool dev_present_intf0; /* USB device presence, interface 0 */
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bool dev_present_intf1; /* USB device presence, interface 1 */
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struct mutex lock; /* to lock this object */
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wait_queue_head_t remove_ok; /* For unexpected USB disconnects */
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struct usb_endpoint_descriptor *rx_endpoint_intf0;
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struct usb_endpoint_descriptor *rx_endpoint_intf1;
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struct usb_endpoint_descriptor *tx_endpoint;
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struct urb *rx_urb_intf0;
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struct urb *rx_urb_intf1;
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struct urb *tx_urb;
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bool tx_control;
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unsigned char usb_rx_buf[8];
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unsigned char usb_tx_buf[8];
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unsigned int send_packet_delay;
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struct tx_t {
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unsigned char data_buf[35]; /* user data buffer */
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struct completion finished; /* wait for write to finish */
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bool busy; /* write in progress */
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int status; /* status of tx completion */
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} tx;
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u16 vendor; /* usb vendor ID */
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u16 product; /* usb product ID */
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struct rc_dev *rdev; /* rc-core device for remote */
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struct input_dev *idev; /* input device for panel & IR mouse */
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struct input_dev *touch; /* input device for touchscreen */
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spinlock_t kc_lock; /* make sure we get keycodes right */
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u32 kc; /* current input keycode */
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u32 last_keycode; /* last reported input keycode */
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u32 rc_scancode; /* the computed remote scancode */
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u8 rc_toggle; /* the computed remote toggle bit */
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u64 rc_proto; /* iMON or MCE (RC6) IR protocol? */
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bool release_code; /* some keys send a release code */
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u8 display_type; /* store the display type */
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bool pad_mouse; /* toggle kbd(0)/mouse(1) mode */
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char name_rdev[128]; /* rc input device name */
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char phys_rdev[64]; /* rc input device phys path */
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char name_idev[128]; /* input device name */
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char phys_idev[64]; /* input device phys path */
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char name_touch[128]; /* touch screen name */
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char phys_touch[64]; /* touch screen phys path */
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struct timer_list ttimer; /* touch screen timer */
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int touch_x; /* x coordinate on touchscreen */
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int touch_y; /* y coordinate on touchscreen */
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const struct imon_usb_dev_descr *dev_descr;
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/* device description with key */
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/* table for front panels */
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};
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#define TOUCH_TIMEOUT (HZ/30)
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/* vfd character device file operations */
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static const struct file_operations vfd_fops = {
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.owner = THIS_MODULE,
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.open = &display_open,
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.write = &vfd_write,
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.release = &display_close,
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.llseek = noop_llseek,
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};
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/* lcd character device file operations */
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static const struct file_operations lcd_fops = {
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.owner = THIS_MODULE,
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.open = &display_open,
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.write = &lcd_write,
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.release = &display_close,
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.llseek = noop_llseek,
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};
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enum {
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IMON_DISPLAY_TYPE_AUTO = 0,
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IMON_DISPLAY_TYPE_VFD = 1,
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IMON_DISPLAY_TYPE_LCD = 2,
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IMON_DISPLAY_TYPE_VGA = 3,
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IMON_DISPLAY_TYPE_NONE = 4,
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};
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enum {
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IMON_KEY_IMON = 0,
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IMON_KEY_MCE = 1,
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IMON_KEY_PANEL = 2,
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};
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static struct usb_class_driver imon_vfd_class = {
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.name = DEVICE_NAME,
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.fops = &vfd_fops,
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.minor_base = DISPLAY_MINOR_BASE,
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};
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static struct usb_class_driver imon_lcd_class = {
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.name = DEVICE_NAME,
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.fops = &lcd_fops,
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.minor_base = DISPLAY_MINOR_BASE,
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};
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/* imon receiver front panel/knob key table */
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static const struct imon_usb_dev_descr imon_default_table = {
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.flags = IMON_NO_FLAGS,
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.key_table = {
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{ 0x000000000f00ffeell, KEY_MEDIA }, /* Go */
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{ 0x000000001200ffeell, KEY_UP },
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{ 0x000000001300ffeell, KEY_DOWN },
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{ 0x000000001400ffeell, KEY_LEFT },
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{ 0x000000001500ffeell, KEY_RIGHT },
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{ 0x000000001600ffeell, KEY_ENTER },
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{ 0x000000001700ffeell, KEY_ESC },
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{ 0x000000001f00ffeell, KEY_AUDIO },
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{ 0x000000002000ffeell, KEY_VIDEO },
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{ 0x000000002100ffeell, KEY_CAMERA },
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{ 0x000000002700ffeell, KEY_DVD },
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{ 0x000000002300ffeell, KEY_TV },
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{ 0x000000002b00ffeell, KEY_EXIT },
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{ 0x000000002c00ffeell, KEY_SELECT },
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{ 0x000000002d00ffeell, KEY_MENU },
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{ 0x000000000500ffeell, KEY_PREVIOUS },
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{ 0x000000000700ffeell, KEY_REWIND },
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{ 0x000000000400ffeell, KEY_STOP },
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{ 0x000000003c00ffeell, KEY_PLAYPAUSE },
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{ 0x000000000800ffeell, KEY_FASTFORWARD },
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{ 0x000000000600ffeell, KEY_NEXT },
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{ 0x000000010000ffeell, KEY_RIGHT },
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{ 0x000001000000ffeell, KEY_LEFT },
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{ 0x000000003d00ffeell, KEY_SELECT },
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{ 0x000100000000ffeell, KEY_VOLUMEUP },
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{ 0x010000000000ffeell, KEY_VOLUMEDOWN },
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{ 0x000000000100ffeell, KEY_MUTE },
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/* 0xffdc iMON MCE VFD */
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{ 0x00010000ffffffeell, KEY_VOLUMEUP },
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{ 0x01000000ffffffeell, KEY_VOLUMEDOWN },
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{ 0x00000001ffffffeell, KEY_MUTE },
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{ 0x0000000fffffffeell, KEY_MEDIA },
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{ 0x00000012ffffffeell, KEY_UP },
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{ 0x00000013ffffffeell, KEY_DOWN },
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{ 0x00000014ffffffeell, KEY_LEFT },
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{ 0x00000015ffffffeell, KEY_RIGHT },
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{ 0x00000016ffffffeell, KEY_ENTER },
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{ 0x00000017ffffffeell, KEY_ESC },
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/* iMON Knob values */
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{ 0x000100ffffffffeell, KEY_VOLUMEUP },
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{ 0x010000ffffffffeell, KEY_VOLUMEDOWN },
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{ 0x000008ffffffffeell, KEY_MUTE },
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{ 0, KEY_RESERVED },
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}
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};
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static const struct imon_usb_dev_descr imon_OEM_VFD = {
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.flags = IMON_NEED_20MS_PKT_DELAY,
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.key_table = {
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{ 0x000000000f00ffeell, KEY_MEDIA }, /* Go */
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{ 0x000000001200ffeell, KEY_UP },
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{ 0x000000001300ffeell, KEY_DOWN },
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{ 0x000000001400ffeell, KEY_LEFT },
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{ 0x000000001500ffeell, KEY_RIGHT },
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{ 0x000000001600ffeell, KEY_ENTER },
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{ 0x000000001700ffeell, KEY_ESC },
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{ 0x000000001f00ffeell, KEY_AUDIO },
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{ 0x000000002b00ffeell, KEY_EXIT },
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{ 0x000000002c00ffeell, KEY_SELECT },
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{ 0x000000002d00ffeell, KEY_MENU },
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{ 0x000000000500ffeell, KEY_PREVIOUS },
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{ 0x000000000700ffeell, KEY_REWIND },
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{ 0x000000000400ffeell, KEY_STOP },
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{ 0x000000003c00ffeell, KEY_PLAYPAUSE },
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{ 0x000000000800ffeell, KEY_FASTFORWARD },
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{ 0x000000000600ffeell, KEY_NEXT },
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{ 0x000000010000ffeell, KEY_RIGHT },
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{ 0x000001000000ffeell, KEY_LEFT },
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{ 0x000000003d00ffeell, KEY_SELECT },
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{ 0x000100000000ffeell, KEY_VOLUMEUP },
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{ 0x010000000000ffeell, KEY_VOLUMEDOWN },
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{ 0x000000000100ffeell, KEY_MUTE },
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/* 0xffdc iMON MCE VFD */
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{ 0x00010000ffffffeell, KEY_VOLUMEUP },
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{ 0x01000000ffffffeell, KEY_VOLUMEDOWN },
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{ 0x00000001ffffffeell, KEY_MUTE },
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{ 0x0000000fffffffeell, KEY_MEDIA },
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{ 0x00000012ffffffeell, KEY_UP },
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{ 0x00000013ffffffeell, KEY_DOWN },
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{ 0x00000014ffffffeell, KEY_LEFT },
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{ 0x00000015ffffffeell, KEY_RIGHT },
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{ 0x00000016ffffffeell, KEY_ENTER },
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{ 0x00000017ffffffeell, KEY_ESC },
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/* iMON Knob values */
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{ 0x000100ffffffffeell, KEY_VOLUMEUP },
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{ 0x010000ffffffffeell, KEY_VOLUMEDOWN },
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{ 0x000008ffffffffeell, KEY_MUTE },
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{ 0, KEY_RESERVED },
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}
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};
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/* imon receiver front panel/knob key table for DH102*/
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static const struct imon_usb_dev_descr imon_DH102 = {
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.flags = IMON_NO_FLAGS,
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.key_table = {
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{ 0x000100000000ffeell, KEY_VOLUMEUP },
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{ 0x010000000000ffeell, KEY_VOLUMEDOWN },
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{ 0x000000010000ffeell, KEY_MUTE },
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{ 0x0000000f0000ffeell, KEY_MEDIA },
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{ 0x000000120000ffeell, KEY_UP },
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{ 0x000000130000ffeell, KEY_DOWN },
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{ 0x000000140000ffeell, KEY_LEFT },
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{ 0x000000150000ffeell, KEY_RIGHT },
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{ 0x000000160000ffeell, KEY_ENTER },
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{ 0x000000170000ffeell, KEY_ESC },
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{ 0x0000002b0000ffeell, KEY_EXIT },
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{ 0x0000002c0000ffeell, KEY_SELECT },
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{ 0x0000002d0000ffeell, KEY_MENU },
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{ 0, KEY_RESERVED }
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}
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};
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/* imon ultrabay front panel key table */
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static const struct imon_usb_dev_descr ultrabay_table = {
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.flags = IMON_SUPPRESS_REPEATED_KEYS,
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.key_table = {
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{ 0x0000000f0000ffeell, KEY_MEDIA }, /* Go */
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{ 0x000000000100ffeell, KEY_UP },
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{ 0x000000000001ffeell, KEY_DOWN },
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{ 0x000000160000ffeell, KEY_ENTER },
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{ 0x0000001f0000ffeell, KEY_AUDIO }, /* Music */
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{ 0x000000200000ffeell, KEY_VIDEO }, /* Movie */
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{ 0x000000210000ffeell, KEY_CAMERA }, /* Photo */
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{ 0x000000270000ffeell, KEY_DVD }, /* DVD */
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{ 0x000000230000ffeell, KEY_TV }, /* TV */
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{ 0x000000050000ffeell, KEY_PREVIOUS }, /* Previous */
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{ 0x000000070000ffeell, KEY_REWIND },
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{ 0x000000040000ffeell, KEY_STOP },
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{ 0x000000020000ffeell, KEY_PLAYPAUSE },
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{ 0x000000080000ffeell, KEY_FASTFORWARD },
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{ 0x000000060000ffeell, KEY_NEXT }, /* Next */
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{ 0x000100000000ffeell, KEY_VOLUMEUP },
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{ 0x010000000000ffeell, KEY_VOLUMEDOWN },
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{ 0x000000010000ffeell, KEY_MUTE },
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{ 0, KEY_RESERVED },
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}
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};
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/*
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* USB Device ID for iMON USB Control Boards
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*
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* The Windows drivers contain 6 different inf files, more or less one for
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* each new device until the 0x0034-0x0046 devices, which all use the same
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* driver. Some of the devices in the 34-46 range haven't been definitively
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* identified yet. Early devices have either a TriGem Computer, Inc. or a
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* Samsung vendor ID (0x0aa8 and 0x04e8 respectively), while all later
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* devices use the SoundGraph vendor ID (0x15c2). This driver only supports
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* the ffdc and later devices, which do onboard decoding.
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*/
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static const struct usb_device_id imon_usb_id_table[] = {
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/*
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* Several devices with this same device ID, all use iMON_PAD.inf
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* SoundGraph iMON PAD (IR & VFD)
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* SoundGraph iMON PAD (IR & LCD)
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* SoundGraph iMON Knob (IR only)
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*/
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{ USB_DEVICE(0x15c2, 0xffdc),
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.driver_info = (unsigned long)&imon_default_table },
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/*
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* Newer devices, all driven by the latest iMON Windows driver, full
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* list of device IDs extracted via 'strings Setup/data1.hdr |grep 15c2'
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* Need user input to fill in details on unknown devices.
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*/
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/* SoundGraph iMON OEM Touch LCD (IR & 7" VGA LCD) */
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{ USB_DEVICE(0x15c2, 0x0034),
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.driver_info = (unsigned long)&imon_DH102 },
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/* SoundGraph iMON OEM Touch LCD (IR & 4.3" VGA LCD) */
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{ USB_DEVICE(0x15c2, 0x0035),
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.driver_info = (unsigned long)&imon_default_table},
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/* SoundGraph iMON OEM VFD (IR & VFD) */
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{ USB_DEVICE(0x15c2, 0x0036),
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.driver_info = (unsigned long)&imon_OEM_VFD },
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/* device specifics unknown */
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{ USB_DEVICE(0x15c2, 0x0037),
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.driver_info = (unsigned long)&imon_default_table},
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/* SoundGraph iMON OEM LCD (IR & LCD) */
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{ USB_DEVICE(0x15c2, 0x0038),
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.driver_info = (unsigned long)&imon_default_table},
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/* SoundGraph iMON UltraBay (IR & LCD) */
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{ USB_DEVICE(0x15c2, 0x0039),
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.driver_info = (unsigned long)&imon_default_table},
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/* device specifics unknown */
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{ USB_DEVICE(0x15c2, 0x003a),
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.driver_info = (unsigned long)&imon_default_table},
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/* device specifics unknown */
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{ USB_DEVICE(0x15c2, 0x003b),
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.driver_info = (unsigned long)&imon_default_table},
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/* SoundGraph iMON OEM Inside (IR only) */
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{ USB_DEVICE(0x15c2, 0x003c),
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.driver_info = (unsigned long)&imon_default_table},
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/* device specifics unknown */
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{ USB_DEVICE(0x15c2, 0x003d),
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.driver_info = (unsigned long)&imon_default_table},
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/* device specifics unknown */
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{ USB_DEVICE(0x15c2, 0x003e),
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.driver_info = (unsigned long)&imon_default_table},
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/* device specifics unknown */
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{ USB_DEVICE(0x15c2, 0x003f),
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.driver_info = (unsigned long)&imon_default_table},
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/* device specifics unknown */
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{ USB_DEVICE(0x15c2, 0x0040),
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.driver_info = (unsigned long)&imon_default_table},
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/* SoundGraph iMON MINI (IR only) */
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{ USB_DEVICE(0x15c2, 0x0041),
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.driver_info = (unsigned long)&imon_default_table},
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/* Antec Veris Multimedia Station EZ External (IR only) */
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{ USB_DEVICE(0x15c2, 0x0042),
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.driver_info = (unsigned long)&imon_default_table},
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/* Antec Veris Multimedia Station Basic Internal (IR only) */
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{ USB_DEVICE(0x15c2, 0x0043),
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.driver_info = (unsigned long)&imon_default_table},
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/* Antec Veris Multimedia Station Elite (IR & VFD) */
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{ USB_DEVICE(0x15c2, 0x0044),
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.driver_info = (unsigned long)&imon_default_table},
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/* Antec Veris Multimedia Station Premiere (IR & LCD) */
|
|
{ USB_DEVICE(0x15c2, 0x0045),
|
|
.driver_info = (unsigned long)&imon_default_table},
|
|
/* device specifics unknown */
|
|
{ USB_DEVICE(0x15c2, 0x0046),
|
|
.driver_info = (unsigned long)&imon_default_table},
|
|
{}
|
|
};
|
|
|
|
/* 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,
|
|
};
|
|
|
|
/* 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)");
|
|
|
|
static int pad_stabilize = 1;
|
|
module_param(pad_stabilize, int, S_IRUGO | S_IWUSR);
|
|
MODULE_PARM_DESC(pad_stabilize, "Apply stabilization algorithm to iMON PAD presses in arrow key mode. 0=disable, 1=enable (default).");
|
|
|
|
/*
|
|
* 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) {
|
|
pr_err("could not find interface for minor %d\n", subminor);
|
|
retval = -ENODEV;
|
|
goto exit;
|
|
}
|
|
ictx = usb_get_intfdata(interface);
|
|
|
|
if (!ictx) {
|
|
pr_err("no context found for minor %d\n", subminor);
|
|
retval = -ENODEV;
|
|
goto exit;
|
|
}
|
|
|
|
mutex_lock(&ictx->lock);
|
|
|
|
if (!ictx->display_supported) {
|
|
pr_err("display not supported by device\n");
|
|
retval = -ENODEV;
|
|
} else if (ictx->display_isopen) {
|
|
pr_err("display port is already open\n");
|
|
retval = -EBUSY;
|
|
} else {
|
|
ictx->display_isopen = true;
|
|
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 = file->private_data;
|
|
|
|
if (!ictx) {
|
|
pr_err("no context for device\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
mutex_lock(&ictx->lock);
|
|
|
|
if (!ictx->display_supported) {
|
|
pr_err("display not supported by device\n");
|
|
retval = -ENODEV;
|
|
} else if (!ictx->display_isopen) {
|
|
pr_err("display is not open\n");
|
|
retval = -EIO;
|
|
} else {
|
|
ictx->display_isopen = false;
|
|
dev_dbg(ictx->dev, "display port closed\n");
|
|
}
|
|
|
|
mutex_unlock(&ictx->lock);
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* Sends a packet to the device -- this function must be called with
|
|
* ictx->lock held, or its unlock/lock sequence while waiting for tx
|
|
* to complete can/will lead to a deadlock.
|
|
*/
|
|
static int send_packet(struct imon_context *ictx)
|
|
{
|
|
unsigned int pipe;
|
|
unsigned long timeout;
|
|
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(*control_req), 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;
|
|
}
|
|
|
|
reinit_completion(&ictx->tx.finished);
|
|
ictx->tx.busy = true;
|
|
smp_rmb(); /* ensure later readers know we're busy */
|
|
|
|
retval = usb_submit_urb(ictx->tx_urb, GFP_KERNEL);
|
|
if (retval) {
|
|
ictx->tx.busy = false;
|
|
smp_rmb(); /* ensure later readers know we're not busy */
|
|
pr_err_ratelimited("error submitting urb(%d)\n", retval);
|
|
} else {
|
|
/* Wait for transmission to complete (or abort) */
|
|
mutex_unlock(&ictx->lock);
|
|
retval = wait_for_completion_interruptible(
|
|
&ictx->tx.finished);
|
|
if (retval) {
|
|
usb_kill_urb(ictx->tx_urb);
|
|
pr_err_ratelimited("task interrupted\n");
|
|
}
|
|
mutex_lock(&ictx->lock);
|
|
|
|
retval = ictx->tx.status;
|
|
if (retval)
|
|
pr_err_ratelimited("packet tx failed (%d)\n", retval);
|
|
}
|
|
|
|
kfree(control_req);
|
|
|
|
/*
|
|
* Induce a mandatory delay before returning, as otherwise,
|
|
* send_packet can get called so rapidly as to overwhelm the device,
|
|
* particularly on faster systems and/or those with quirky usb.
|
|
*/
|
|
timeout = msecs_to_jiffies(ictx->send_packet_delay);
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
|
schedule_timeout(timeout);
|
|
|
|
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) {
|
|
pr_err("no context for device\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (!ictx->dev_present_intf0) {
|
|
pr_err("no iMON device present\n");
|
|
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) {
|
|
pr_err("no context for device\n");
|
|
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) {
|
|
pr_err("send_packet failed for packet %d\n", 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->rf_isassociating)
|
|
strscpy(buf, "associating\n", PAGE_SIZE);
|
|
else
|
|
strscpy(buf, "closed\n", PAGE_SIZE);
|
|
|
|
dev_info(d, "Visit https://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->rf_isassociating = true;
|
|
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 const struct attribute_group imon_display_attr_group = {
|
|
.attrs = imon_display_sysfs_entries
|
|
};
|
|
|
|
static struct attribute *imon_rf_sysfs_entries[] = {
|
|
&dev_attr_associate_remote.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group imon_rf_attr_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 __user *buf,
|
|
size_t n_bytes, loff_t *pos)
|
|
{
|
|
int i;
|
|
int offset;
|
|
int seq;
|
|
int retval = 0;
|
|
struct imon_context *ictx;
|
|
static const unsigned char vfd_packet6[] = {
|
|
0x01, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF };
|
|
|
|
ictx = file->private_data;
|
|
if (!ictx) {
|
|
pr_err_ratelimited("no context for device\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
mutex_lock(&ictx->lock);
|
|
|
|
if (!ictx->dev_present_intf0) {
|
|
pr_err_ratelimited("no iMON device present\n");
|
|
retval = -ENODEV;
|
|
goto exit;
|
|
}
|
|
|
|
if (n_bytes <= 0 || n_bytes > 32) {
|
|
pr_err_ratelimited("invalid payload size\n");
|
|
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) {
|
|
pr_err_ratelimited("send packet #%d failed\n", 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)
|
|
pr_err_ratelimited("send packet #%d failed\n", 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 __user *buf,
|
|
size_t n_bytes, loff_t *pos)
|
|
{
|
|
int retval = 0;
|
|
struct imon_context *ictx;
|
|
|
|
ictx = file->private_data;
|
|
if (!ictx) {
|
|
pr_err_ratelimited("no context for device\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
mutex_lock(&ictx->lock);
|
|
|
|
if (!ictx->display_supported) {
|
|
pr_err_ratelimited("no iMON display present\n");
|
|
retval = -ENODEV;
|
|
goto exit;
|
|
}
|
|
|
|
if (n_bytes != 8) {
|
|
pr_err_ratelimited("invalid payload size: %d (expected 8)\n",
|
|
(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) {
|
|
pr_err_ratelimited("send packet failed!\n");
|
|
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 = false;
|
|
smp_rmb(); /* ensure later readers know we're not busy */
|
|
complete(&ictx->tx.finished);
|
|
}
|
|
|
|
/*
|
|
* report touchscreen input
|
|
*/
|
|
static void imon_touch_display_timeout(struct timer_list *t)
|
|
{
|
|
struct imon_context *ictx = from_timer(ictx, t, ttimer);
|
|
|
|
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);
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*
|
|
* This function gets called two different ways, one way is from
|
|
* rc_register_device, for initial protocol selection/setup, and the other is
|
|
* via a userspace-initiated protocol change request, either by direct sysfs
|
|
* prodding or by something like ir-keytable. In the rc_register_device case,
|
|
* the imon context lock is already held, but when initiated from userspace,
|
|
* it is not, so we must acquire it prior to calling send_packet, which
|
|
* requires that the lock is held.
|
|
*/
|
|
static int imon_ir_change_protocol(struct rc_dev *rc, u64 *rc_proto)
|
|
{
|
|
int retval;
|
|
struct imon_context *ictx = rc->priv;
|
|
struct device *dev = ictx->dev;
|
|
bool unlock = false;
|
|
unsigned char ir_proto_packet[] = {
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x86 };
|
|
|
|
if (*rc_proto && !(*rc_proto & rc->allowed_protocols))
|
|
dev_warn(dev, "Looks like you're trying to use an IR protocol this device does not support\n");
|
|
|
|
if (*rc_proto & RC_PROTO_BIT_RC6_MCE) {
|
|
dev_dbg(dev, "Configuring IR receiver for MCE protocol\n");
|
|
ir_proto_packet[0] = 0x01;
|
|
*rc_proto = RC_PROTO_BIT_RC6_MCE;
|
|
} else if (*rc_proto & RC_PROTO_BIT_IMON) {
|
|
dev_dbg(dev, "Configuring IR receiver for iMON protocol\n");
|
|
if (!pad_stabilize)
|
|
dev_dbg(dev, "PAD stabilize functionality disabled\n");
|
|
/* ir_proto_packet[0] = 0x00; // already the default */
|
|
*rc_proto = RC_PROTO_BIT_IMON;
|
|
} else {
|
|
dev_warn(dev, "Unsupported IR protocol specified, overriding to iMON IR protocol\n");
|
|
if (!pad_stabilize)
|
|
dev_dbg(dev, "PAD stabilize functionality disabled\n");
|
|
/* ir_proto_packet[0] = 0x00; // already the default */
|
|
*rc_proto = RC_PROTO_BIT_IMON;
|
|
}
|
|
|
|
memcpy(ictx->usb_tx_buf, &ir_proto_packet, sizeof(ir_proto_packet));
|
|
|
|
if (!mutex_is_locked(&ictx->lock)) {
|
|
unlock = true;
|
|
mutex_lock(&ictx->lock);
|
|
}
|
|
|
|
retval = send_packet(ictx);
|
|
if (retval)
|
|
goto out;
|
|
|
|
ictx->rc_proto = *rc_proto;
|
|
ictx->pad_mouse = false;
|
|
|
|
out:
|
|
if (unlock)
|
|
mutex_unlock(&ictx->lock);
|
|
|
|
return retval;
|
|
}
|
|
|
|
/*
|
|
* 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)
|
|
{
|
|
ktime_t ct;
|
|
static ktime_t prev_time;
|
|
static ktime_t hit_time;
|
|
static int x, y, prev_result, hits;
|
|
int result = 0;
|
|
long msec, msec_hit;
|
|
|
|
ct = ktime_get();
|
|
msec = ktime_ms_delta(ct, prev_time);
|
|
msec_hit = ktime_ms_delta(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 u32 imon_remote_key_lookup(struct imon_context *ictx, u32 scancode)
|
|
{
|
|
u32 keycode;
|
|
u32 release;
|
|
bool is_release_code = false;
|
|
|
|
/* Look for the initial press of a button */
|
|
keycode = rc_g_keycode_from_table(ictx->rdev, scancode);
|
|
ictx->rc_toggle = 0x0;
|
|
ictx->rc_scancode = scancode;
|
|
|
|
/* Look for the release of a button */
|
|
if (keycode == KEY_RESERVED) {
|
|
release = scancode & ~0x4000;
|
|
keycode = rc_g_keycode_from_table(ictx->rdev, release);
|
|
if (keycode != KEY_RESERVED)
|
|
is_release_code = true;
|
|
}
|
|
|
|
ictx->release_code = is_release_code;
|
|
|
|
return keycode;
|
|
}
|
|
|
|
static u32 imon_mce_key_lookup(struct imon_context *ictx, u32 scancode)
|
|
{
|
|
u32 keycode;
|
|
|
|
#define MCE_KEY_MASK 0x7000
|
|
#define MCE_TOGGLE_BIT 0x8000
|
|
|
|
/*
|
|
* On some receivers, mce keys decode to 0x8000f04xx and 0x8000f84xx
|
|
* (the toggle bit flipping between alternating key presses), while
|
|
* on other receivers, we see 0x8000f74xx and 0x8000ff4xx. To keep
|
|
* the table trim, we always or in the bits to look up 0x8000ff4xx,
|
|
* but we can't or them into all codes, as some keys are decoded in
|
|
* a different way w/o the same use of the toggle bit...
|
|
*/
|
|
if (scancode & 0x80000000)
|
|
scancode = scancode | MCE_KEY_MASK | MCE_TOGGLE_BIT;
|
|
|
|
ictx->rc_scancode = scancode;
|
|
keycode = rc_g_keycode_from_table(ictx->rdev, scancode);
|
|
|
|
/* not used in mce mode, but make sure we know its false */
|
|
ictx->release_code = false;
|
|
|
|
return keycode;
|
|
}
|
|
|
|
static u32 imon_panel_key_lookup(struct imon_context *ictx, u64 code)
|
|
{
|
|
const struct imon_panel_key_table *key_table;
|
|
u32 keycode = KEY_RESERVED;
|
|
int i;
|
|
|
|
key_table = ictx->dev_descr->key_table;
|
|
|
|
for (i = 0; key_table[i].hw_code != 0; i++) {
|
|
if (key_table[i].hw_code == (code | 0xffee)) {
|
|
keycode = key_table[i].keycode;
|
|
break;
|
|
}
|
|
}
|
|
ictx->release_code = false;
|
|
return keycode;
|
|
}
|
|
|
|
static bool imon_mouse_event(struct imon_context *ictx,
|
|
unsigned char *buf, int len)
|
|
{
|
|
signed char rel_x = 0x00, rel_y = 0x00;
|
|
u8 right_shift = 1;
|
|
bool mouse_input = true;
|
|
int dir = 0;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&ictx->kc_lock, flags);
|
|
|
|
/* 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 = false;
|
|
|
|
spin_unlock_irqrestore(&ictx->kc_lock, flags);
|
|
|
|
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);
|
|
spin_lock_irqsave(&ictx->kc_lock, flags);
|
|
ictx->last_keycode = ictx->kc;
|
|
spin_unlock_irqrestore(&ictx->kc_lock, flags);
|
|
}
|
|
|
|
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 dir = 0;
|
|
signed char rel_x = 0x00, rel_y = 0x00;
|
|
u16 timeout, threshold;
|
|
u32 scancode = KEY_RESERVED;
|
|
unsigned long flags;
|
|
|
|
/*
|
|
* 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 tendency 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->rc_proto == RC_PROTO_BIT_IMON && pad_stabilize) {
|
|
if ((buf[1] == 0) && ((rel_x != 0) || (rel_y != 0))) {
|
|
dir = stabilize((int)rel_x, (int)rel_y,
|
|
timeout, threshold);
|
|
if (!dir) {
|
|
spin_lock_irqsave(&ictx->kc_lock,
|
|
flags);
|
|
ictx->kc = KEY_UNKNOWN;
|
|
spin_unlock_irqrestore(&ictx->kc_lock,
|
|
flags);
|
|
return;
|
|
}
|
|
buf[2] = dir & 0xFF;
|
|
buf[3] = (dir >> 8) & 0xFF;
|
|
scancode = be32_to_cpu(*((__be32 *)buf));
|
|
}
|
|
} else {
|
|
/*
|
|
* Hack alert: instead of using keycodes, we have
|
|
* to use hard-coded scancodes here...
|
|
*/
|
|
if (abs(rel_y) > abs(rel_x)) {
|
|
buf[2] = (rel_y > 0) ? 0x7F : 0x80;
|
|
buf[3] = 0;
|
|
if (rel_y > 0)
|
|
scancode = 0x01007f00; /* KEY_DOWN */
|
|
else
|
|
scancode = 0x01008000; /* KEY_UP */
|
|
} else {
|
|
buf[2] = 0;
|
|
buf[3] = (rel_x > 0) ? 0x7F : 0x80;
|
|
if (rel_x > 0)
|
|
scancode = 0x0100007f; /* KEY_RIGHT */
|
|
else
|
|
scancode = 0x01000080; /* 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 endianness. Extract direction from buffer, rotate endianness,
|
|
* 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->rc_proto == RC_PROTO_BIT_IMON && pad_stabilize) {
|
|
dir = stabilize((int)rel_x, (int)rel_y,
|
|
timeout, threshold);
|
|
if (!dir) {
|
|
spin_lock_irqsave(&ictx->kc_lock, flags);
|
|
ictx->kc = KEY_UNKNOWN;
|
|
spin_unlock_irqrestore(&ictx->kc_lock, flags);
|
|
return;
|
|
}
|
|
buf[2] = dir & 0xFF;
|
|
buf[3] = (dir >> 8) & 0xFF;
|
|
scancode = be32_to_cpu(*((__be32 *)buf));
|
|
} else {
|
|
/*
|
|
* Hack alert: instead of using keycodes, we have
|
|
* to use hard-coded scancodes here...
|
|
*/
|
|
if (abs(rel_y) > abs(rel_x)) {
|
|
buf[2] = (rel_y > 0) ? 0x7F : 0x80;
|
|
buf[3] = 0;
|
|
if (rel_y > 0)
|
|
scancode = 0x01007f00; /* KEY_DOWN */
|
|
else
|
|
scancode = 0x01008000; /* KEY_UP */
|
|
} else {
|
|
buf[2] = 0;
|
|
buf[3] = (rel_x > 0) ? 0x7F : 0x80;
|
|
if (rel_x > 0)
|
|
scancode = 0x0100007f; /* KEY_RIGHT */
|
|
else
|
|
scancode = 0x01000080; /* KEY_LEFT */
|
|
}
|
|
}
|
|
}
|
|
|
|
if (scancode) {
|
|
spin_lock_irqsave(&ictx->kc_lock, flags);
|
|
ictx->kc = imon_remote_key_lookup(ictx, scancode);
|
|
spin_unlock_irqrestore(&ictx->kc_lock, flags);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* figure out if these is a press or a release. We don't actually
|
|
* care about repeats, as those will be auto-generated within the IR
|
|
* subsystem for repeating scancodes.
|
|
*/
|
|
static int imon_parse_press_type(struct imon_context *ictx,
|
|
unsigned char *buf, u8 ktype)
|
|
{
|
|
int press_type = 0;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&ictx->kc_lock, flags);
|
|
|
|
/* key release of 0x02XXXXXX key */
|
|
if (ictx->kc == KEY_RESERVED && buf[0] == 0x02 && buf[3] == 0x00)
|
|
ictx->kc = ictx->last_keycode;
|
|
|
|
/* mouse button release on (some) 0xffdc devices */
|
|
else if (ictx->kc == KEY_RESERVED && buf[0] == 0x68 && buf[1] == 0x82 &&
|
|
buf[2] == 0x81 && buf[3] == 0xb7)
|
|
ictx->kc = ictx->last_keycode;
|
|
|
|
/* mouse button release on (some other) 0xffdc devices */
|
|
else if (ictx->kc == KEY_RESERVED && buf[0] == 0x01 && buf[1] == 0x00 &&
|
|
buf[2] == 0x81 && buf[3] == 0xb7)
|
|
ictx->kc = ictx->last_keycode;
|
|
|
|
/* mce-specific button handling, no keyup events */
|
|
else if (ktype == IMON_KEY_MCE) {
|
|
ictx->rc_toggle = buf[2];
|
|
press_type = 1;
|
|
|
|
/* incoherent or irrelevant data */
|
|
} else if (ictx->kc == KEY_RESERVED)
|
|
press_type = -EINVAL;
|
|
|
|
/* key release of 0xXXXXXXb7 key */
|
|
else if (ictx->release_code)
|
|
press_type = 0;
|
|
|
|
/* this is a button press */
|
|
else
|
|
press_type = 1;
|
|
|
|
spin_unlock_irqrestore(&ictx->kc_lock, flags);
|
|
|
|
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;
|
|
unsigned long flags;
|
|
u32 kc;
|
|
u64 scancode;
|
|
int press_type = 0;
|
|
ktime_t t;
|
|
static ktime_t prev_time;
|
|
u8 ktype;
|
|
|
|
/* filter out junk data on the older 0xffdc imon devices */
|
|
if ((buf[0] == 0xff) && (buf[1] == 0xff) && (buf[2] == 0xff))
|
|
return;
|
|
|
|
/* Figure out what key was pressed */
|
|
if (len == 8 && buf[7] == 0xee) {
|
|
scancode = be64_to_cpu(*((__be64 *)buf));
|
|
ktype = IMON_KEY_PANEL;
|
|
kc = imon_panel_key_lookup(ictx, scancode);
|
|
ictx->release_code = false;
|
|
} else {
|
|
scancode = be32_to_cpu(*((__be32 *)buf));
|
|
if (ictx->rc_proto == RC_PROTO_BIT_RC6_MCE) {
|
|
ktype = IMON_KEY_IMON;
|
|
if (buf[0] == 0x80)
|
|
ktype = IMON_KEY_MCE;
|
|
kc = imon_mce_key_lookup(ictx, scancode);
|
|
} else {
|
|
ktype = IMON_KEY_IMON;
|
|
kc = imon_remote_key_lookup(ictx, scancode);
|
|
}
|
|
}
|
|
|
|
spin_lock_irqsave(&ictx->kc_lock, flags);
|
|
/* keyboard/mouse mode toggle button */
|
|
if (kc == KEY_KEYBOARD && !ictx->release_code) {
|
|
ictx->last_keycode = kc;
|
|
if (!nomouse) {
|
|
ictx->pad_mouse = !ictx->pad_mouse;
|
|
dev_dbg(dev, "toggling to %s mode\n",
|
|
ictx->pad_mouse ? "mouse" : "keyboard");
|
|
spin_unlock_irqrestore(&ictx->kc_lock, flags);
|
|
return;
|
|
} else {
|
|
ictx->pad_mouse = false;
|
|
dev_dbg(dev, "mouse mode disabled, passing key value\n");
|
|
}
|
|
}
|
|
|
|
ictx->kc = kc;
|
|
spin_unlock_irqrestore(&ictx->kc_lock, flags);
|
|
|
|
/* send touchscreen events through input subsystem if touchpad data */
|
|
if (ictx->touch && len == 8 && buf[7] == 0x86) {
|
|
imon_touch_event(ictx, buf);
|
|
return;
|
|
|
|
/* 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);
|
|
}
|
|
|
|
if (debug) {
|
|
printk(KERN_INFO "intf%d decoded packet: %*ph\n",
|
|
intf, len, buf);
|
|
}
|
|
|
|
press_type = imon_parse_press_type(ictx, buf, ktype);
|
|
if (press_type < 0)
|
|
goto not_input_data;
|
|
|
|
if (ktype != IMON_KEY_PANEL) {
|
|
if (press_type == 0)
|
|
rc_keyup(ictx->rdev);
|
|
else {
|
|
enum rc_proto proto;
|
|
|
|
if (ictx->rc_proto == RC_PROTO_BIT_RC6_MCE)
|
|
proto = RC_PROTO_RC6_MCE;
|
|
else if (ictx->rc_proto == RC_PROTO_BIT_IMON)
|
|
proto = RC_PROTO_IMON;
|
|
else
|
|
return;
|
|
|
|
rc_keydown(ictx->rdev, proto, ictx->rc_scancode,
|
|
ictx->rc_toggle);
|
|
|
|
spin_lock_irqsave(&ictx->kc_lock, flags);
|
|
ictx->last_keycode = ictx->kc;
|
|
spin_unlock_irqrestore(&ictx->kc_lock, flags);
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* Only panel type events left to process now */
|
|
spin_lock_irqsave(&ictx->kc_lock, flags);
|
|
|
|
t = ktime_get();
|
|
/* KEY repeats from knob and panel that need to be suppressed */
|
|
if (ictx->kc == KEY_MUTE ||
|
|
ictx->dev_descr->flags & IMON_SUPPRESS_REPEATED_KEYS) {
|
|
if (ictx->kc == ictx->last_keycode &&
|
|
ktime_ms_delta(t, prev_time) < ictx->idev->rep[REP_DELAY]) {
|
|
spin_unlock_irqrestore(&ictx->kc_lock, flags);
|
|
return;
|
|
}
|
|
}
|
|
|
|
prev_time = t;
|
|
kc = ictx->kc;
|
|
|
|
spin_unlock_irqrestore(&ictx->kc_lock, flags);
|
|
|
|
input_report_key(ictx->idev, kc, press_type);
|
|
input_sync(ictx->idev);
|
|
|
|
/* panel keys don't generate a release */
|
|
input_report_key(ictx->idev, kc, 0);
|
|
input_sync(ictx->idev);
|
|
|
|
spin_lock_irqsave(&ictx->kc_lock, flags);
|
|
ictx->last_keycode = kc;
|
|
spin_unlock_irqrestore(&ictx->kc_lock, flags);
|
|
|
|
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->rf_isassociating = false;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Callback function for USB core API: receive data
|
|
*/
|
|
static void usb_rx_callback_intf0(struct urb *urb)
|
|
{
|
|
struct imon_context *ictx;
|
|
int intfnum = 0;
|
|
|
|
if (!urb)
|
|
return;
|
|
|
|
ictx = (struct imon_context *)urb->context;
|
|
if (!ictx)
|
|
return;
|
|
|
|
/*
|
|
* if we get a callback before we're done configuring the hardware, we
|
|
* can't yet process the data, as there's nowhere to send it, but we
|
|
* still need to submit a new rx URB to avoid wedging the hardware
|
|
*/
|
|
if (!ictx->dev_present_intf0)
|
|
goto out;
|
|
|
|
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;
|
|
}
|
|
|
|
out:
|
|
usb_submit_urb(ictx->rx_urb_intf0, GFP_ATOMIC);
|
|
}
|
|
|
|
static void usb_rx_callback_intf1(struct urb *urb)
|
|
{
|
|
struct imon_context *ictx;
|
|
int intfnum = 1;
|
|
|
|
if (!urb)
|
|
return;
|
|
|
|
ictx = (struct imon_context *)urb->context;
|
|
if (!ictx)
|
|
return;
|
|
|
|
/*
|
|
* if we get a callback before we're done configuring the hardware, we
|
|
* can't yet process the data, as there's nowhere to send it, but we
|
|
* still need to submit a new rx URB to avoid wedging the hardware
|
|
*/
|
|
if (!ictx->dev_present_intf1)
|
|
goto out;
|
|
|
|
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;
|
|
}
|
|
|
|
out:
|
|
usb_submit_urb(ictx->rx_urb_intf1, GFP_ATOMIC);
|
|
}
|
|
|
|
/*
|
|
* The 0x15c2:0xffdc device ID was used for umpteen different imon
|
|
* devices, and all of them constantly spew interrupts, even when there
|
|
* is no actual data to report. However, byte 6 of this buffer looks like
|
|
* its unique across device variants, so we're trying to key off that to
|
|
* figure out which display type (if any) and what IR protocol the device
|
|
* actually supports. These devices have their IR protocol hard-coded into
|
|
* their firmware, they can't be changed on the fly like the newer hardware.
|
|
*/
|
|
static void imon_get_ffdc_type(struct imon_context *ictx)
|
|
{
|
|
u8 ffdc_cfg_byte = ictx->usb_rx_buf[6];
|
|
u8 detected_display_type = IMON_DISPLAY_TYPE_NONE;
|
|
u64 allowed_protos = RC_PROTO_BIT_IMON;
|
|
|
|
switch (ffdc_cfg_byte) {
|
|
/* iMON Knob, no display, iMON IR + vol knob */
|
|
case 0x21:
|
|
dev_info(ictx->dev, "0xffdc iMON Knob, iMON IR");
|
|
ictx->display_supported = false;
|
|
break;
|
|
/* iMON 2.4G LT (usb stick), no display, iMON RF */
|
|
case 0x4e:
|
|
dev_info(ictx->dev, "0xffdc iMON 2.4G LT, iMON RF");
|
|
ictx->display_supported = false;
|
|
ictx->rf_device = true;
|
|
break;
|
|
/* iMON VFD, no IR (does have vol knob tho) */
|
|
case 0x35:
|
|
dev_info(ictx->dev, "0xffdc iMON VFD + knob, no IR");
|
|
detected_display_type = IMON_DISPLAY_TYPE_VFD;
|
|
break;
|
|
/* iMON VFD, iMON IR */
|
|
case 0x24:
|
|
case 0x30:
|
|
case 0x85:
|
|
dev_info(ictx->dev, "0xffdc iMON VFD, iMON IR");
|
|
detected_display_type = IMON_DISPLAY_TYPE_VFD;
|
|
break;
|
|
/* iMON VFD, MCE IR */
|
|
case 0x46:
|
|
case 0x9e:
|
|
dev_info(ictx->dev, "0xffdc iMON VFD, MCE IR");
|
|
detected_display_type = IMON_DISPLAY_TYPE_VFD;
|
|
allowed_protos = RC_PROTO_BIT_RC6_MCE;
|
|
break;
|
|
/* iMON VFD, iMON or MCE IR */
|
|
case 0x7e:
|
|
dev_info(ictx->dev, "0xffdc iMON VFD, iMON or MCE IR");
|
|
detected_display_type = IMON_DISPLAY_TYPE_VFD;
|
|
allowed_protos |= RC_PROTO_BIT_RC6_MCE;
|
|
break;
|
|
/* iMON LCD, MCE IR */
|
|
case 0x9f:
|
|
dev_info(ictx->dev, "0xffdc iMON LCD, MCE IR");
|
|
detected_display_type = IMON_DISPLAY_TYPE_LCD;
|
|
allowed_protos = RC_PROTO_BIT_RC6_MCE;
|
|
break;
|
|
/* no display, iMON IR */
|
|
case 0x26:
|
|
dev_info(ictx->dev, "0xffdc iMON Inside, iMON IR");
|
|
ictx->display_supported = false;
|
|
break;
|
|
/* Soundgraph iMON UltraBay */
|
|
case 0x98:
|
|
dev_info(ictx->dev, "0xffdc iMON UltraBay, LCD + IR");
|
|
detected_display_type = IMON_DISPLAY_TYPE_LCD;
|
|
allowed_protos = RC_PROTO_BIT_IMON | RC_PROTO_BIT_RC6_MCE;
|
|
ictx->dev_descr = &ultrabay_table;
|
|
break;
|
|
|
|
default:
|
|
dev_info(ictx->dev, "Unknown 0xffdc device, defaulting to VFD and iMON IR");
|
|
detected_display_type = IMON_DISPLAY_TYPE_VFD;
|
|
/*
|
|
* We don't know which one it is, allow user to set the
|
|
* RC6 one from userspace if IMON wasn't correct.
|
|
*/
|
|
allowed_protos |= RC_PROTO_BIT_RC6_MCE;
|
|
break;
|
|
}
|
|
|
|
printk(KERN_CONT " (id 0x%02x)\n", ffdc_cfg_byte);
|
|
|
|
ictx->display_type = detected_display_type;
|
|
ictx->rc_proto = allowed_protos;
|
|
}
|
|
|
|
static void imon_set_display_type(struct imon_context *ictx)
|
|
{
|
|
u8 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) {
|
|
switch (ictx->product) {
|
|
case 0xffdc:
|
|
/* set in imon_get_ffdc_type() */
|
|
configured_display_type = ictx->display_type;
|
|
break;
|
|
case 0x0034:
|
|
case 0x0035:
|
|
configured_display_type = IMON_DISPLAY_TYPE_VGA;
|
|
break;
|
|
case 0x0038:
|
|
case 0x0039:
|
|
case 0x0045:
|
|
configured_display_type = IMON_DISPLAY_TYPE_LCD;
|
|
break;
|
|
case 0x003c:
|
|
case 0x0041:
|
|
case 0x0042:
|
|
case 0x0043:
|
|
configured_display_type = IMON_DISPLAY_TYPE_NONE;
|
|
ictx->display_supported = false;
|
|
break;
|
|
case 0x0036:
|
|
case 0x0044:
|
|
default:
|
|
configured_display_type = IMON_DISPLAY_TYPE_VFD;
|
|
break;
|
|
}
|
|
} else {
|
|
configured_display_type = display_type;
|
|
if (display_type == IMON_DISPLAY_TYPE_NONE)
|
|
ictx->display_supported = false;
|
|
else
|
|
ictx->display_supported = true;
|
|
dev_info(ictx->dev, "%s: overriding display type to %d via modparam\n",
|
|
__func__, display_type);
|
|
}
|
|
|
|
ictx->display_type = configured_display_type;
|
|
}
|
|
|
|
static struct rc_dev *imon_init_rdev(struct imon_context *ictx)
|
|
{
|
|
struct rc_dev *rdev;
|
|
int ret;
|
|
static const unsigned char fp_packet[] = {
|
|
0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x88 };
|
|
|
|
rdev = rc_allocate_device(RC_DRIVER_SCANCODE);
|
|
if (!rdev) {
|
|
dev_err(ictx->dev, "remote control dev allocation failed\n");
|
|
goto out;
|
|
}
|
|
|
|
snprintf(ictx->name_rdev, sizeof(ictx->name_rdev),
|
|
"iMON Remote (%04x:%04x)", ictx->vendor, ictx->product);
|
|
usb_make_path(ictx->usbdev_intf0, ictx->phys_rdev,
|
|
sizeof(ictx->phys_rdev));
|
|
strlcat(ictx->phys_rdev, "/input0", sizeof(ictx->phys_rdev));
|
|
|
|
rdev->device_name = ictx->name_rdev;
|
|
rdev->input_phys = ictx->phys_rdev;
|
|
usb_to_input_id(ictx->usbdev_intf0, &rdev->input_id);
|
|
rdev->dev.parent = ictx->dev;
|
|
|
|
rdev->priv = ictx;
|
|
/* iMON PAD or MCE */
|
|
rdev->allowed_protocols = RC_PROTO_BIT_IMON | RC_PROTO_BIT_RC6_MCE;
|
|
rdev->change_protocol = imon_ir_change_protocol;
|
|
rdev->driver_name = MOD_NAME;
|
|
|
|
/* 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, "panel buttons/knobs setup failed\n");
|
|
|
|
if (ictx->product == 0xffdc) {
|
|
imon_get_ffdc_type(ictx);
|
|
rdev->allowed_protocols = ictx->rc_proto;
|
|
}
|
|
|
|
imon_set_display_type(ictx);
|
|
|
|
if (ictx->rc_proto == RC_PROTO_BIT_RC6_MCE)
|
|
rdev->map_name = RC_MAP_IMON_MCE;
|
|
else
|
|
rdev->map_name = RC_MAP_IMON_PAD;
|
|
|
|
ret = rc_register_device(rdev);
|
|
if (ret < 0) {
|
|
dev_err(ictx->dev, "remote input dev register failed\n");
|
|
goto out;
|
|
}
|
|
|
|
return rdev;
|
|
|
|
out:
|
|
rc_free_device(rdev);
|
|
return NULL;
|
|
}
|
|
|
|
static struct input_dev *imon_init_idev(struct imon_context *ictx)
|
|
{
|
|
const struct imon_panel_key_table *key_table;
|
|
struct input_dev *idev;
|
|
int ret, i;
|
|
|
|
key_table = ictx->dev_descr->key_table;
|
|
|
|
idev = input_allocate_device();
|
|
if (!idev)
|
|
goto out;
|
|
|
|
snprintf(ictx->name_idev, sizeof(ictx->name_idev),
|
|
"iMON Panel, Knob and Mouse(%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, "/input1", sizeof(ictx->phys_idev));
|
|
idev->phys = ictx->phys_idev;
|
|
|
|
idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | 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);
|
|
|
|
/* panel and/or knob code support */
|
|
for (i = 0; key_table[i].hw_code != 0; i++) {
|
|
u32 kc = key_table[i].keycode;
|
|
__set_bit(kc, idev->keybit);
|
|
}
|
|
|
|
usb_to_input_id(ictx->usbdev_intf0, &idev->id);
|
|
idev->dev.parent = ictx->dev;
|
|
input_set_drvdata(idev, ictx);
|
|
|
|
ret = input_register_device(idev);
|
|
if (ret < 0) {
|
|
dev_err(ictx->dev, "input dev register failed\n");
|
|
goto out;
|
|
}
|
|
|
|
return idev;
|
|
|
|
out:
|
|
input_free_device(idev);
|
|
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)
|
|
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, "/input2", 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(touch);
|
|
|
|
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 = false;
|
|
bool display_ep_found = false;
|
|
bool tx_control = false;
|
|
|
|
/*
|
|
* 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 = usb_endpoint_type(ep);
|
|
|
|
if (!ir_ep_found && ep_dir == USB_DIR_IN &&
|
|
ep_type == USB_ENDPOINT_XFER_INT) {
|
|
|
|
rx_endpoint = ep;
|
|
ir_ep_found = true;
|
|
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 = true;
|
|
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 = true;
|
|
display_ep_found = true;
|
|
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 = false;
|
|
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 = false;
|
|
dev_dbg(ictx->dev, "%s: iMON Touch device found\n", __func__);
|
|
}
|
|
|
|
/* Input endpoint is mandatory */
|
|
if (!ir_ep_found)
|
|
pr_err("no valid input (IR) endpoint found\n");
|
|
|
|
ictx->tx_control = tx_control;
|
|
|
|
if (display_ep_found)
|
|
ictx->display_supported = true;
|
|
|
|
return ir_ep_found;
|
|
|
|
}
|
|
|
|
static struct imon_context *imon_init_intf0(struct usb_interface *intf,
|
|
const struct usb_device_id *id)
|
|
{
|
|
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 = -ENOMEM;
|
|
|
|
ictx = kzalloc(sizeof(*ictx), GFP_KERNEL);
|
|
if (!ictx)
|
|
goto exit;
|
|
|
|
rx_urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!rx_urb)
|
|
goto rx_urb_alloc_failed;
|
|
tx_urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!tx_urb)
|
|
goto tx_urb_alloc_failed;
|
|
|
|
mutex_init(&ictx->lock);
|
|
spin_lock_init(&ictx->kc_lock);
|
|
|
|
mutex_lock(&ictx->lock);
|
|
|
|
ictx->dev = dev;
|
|
ictx->usbdev_intf0 = usb_get_dev(interface_to_usbdev(intf));
|
|
ictx->rx_urb_intf0 = rx_urb;
|
|
ictx->tx_urb = tx_urb;
|
|
ictx->rf_device = false;
|
|
|
|
init_completion(&ictx->tx.finished);
|
|
|
|
ictx->vendor = le16_to_cpu(ictx->usbdev_intf0->descriptor.idVendor);
|
|
ictx->product = le16_to_cpu(ictx->usbdev_intf0->descriptor.idProduct);
|
|
|
|
/* save drive info for later accessing the panel/knob key table */
|
|
ictx->dev_descr = (struct imon_usb_dev_descr *)id->driver_info;
|
|
/* default send_packet delay is 5ms but some devices need more */
|
|
ictx->send_packet_delay = ictx->dev_descr->flags &
|
|
IMON_NEED_20MS_PKT_DELAY ? 20 : 5;
|
|
|
|
ret = -ENODEV;
|
|
iface_desc = intf->cur_altsetting;
|
|
if (!imon_find_endpoints(ictx, iface_desc)) {
|
|
goto find_endpoint_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) {
|
|
pr_err("usb_submit_urb failed for intf0 (%d)\n", ret);
|
|
goto urb_submit_failed;
|
|
}
|
|
|
|
ictx->idev = imon_init_idev(ictx);
|
|
if (!ictx->idev) {
|
|
dev_err(dev, "%s: input device setup failed\n", __func__);
|
|
goto idev_setup_failed;
|
|
}
|
|
|
|
ictx->rdev = imon_init_rdev(ictx);
|
|
if (!ictx->rdev) {
|
|
dev_err(dev, "%s: rc device setup failed\n", __func__);
|
|
goto rdev_setup_failed;
|
|
}
|
|
|
|
ictx->dev_present_intf0 = true;
|
|
|
|
mutex_unlock(&ictx->lock);
|
|
return ictx;
|
|
|
|
rdev_setup_failed:
|
|
input_unregister_device(ictx->idev);
|
|
idev_setup_failed:
|
|
usb_kill_urb(ictx->rx_urb_intf0);
|
|
urb_submit_failed:
|
|
find_endpoint_failed:
|
|
usb_put_dev(ictx->usbdev_intf0);
|
|
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 = -ENOMEM;
|
|
|
|
rx_urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!rx_urb)
|
|
goto rx_urb_alloc_failed;
|
|
|
|
mutex_lock(&ictx->lock);
|
|
|
|
if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) {
|
|
timer_setup(&ictx->ttimer, imon_touch_display_timeout, 0);
|
|
}
|
|
|
|
ictx->usbdev_intf1 = usb_get_dev(interface_to_usbdev(intf));
|
|
ictx->rx_urb_intf1 = rx_urb;
|
|
|
|
ret = -ENODEV;
|
|
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) {
|
|
pr_err("usb_submit_urb failed for intf1 (%d)\n", ret);
|
|
goto urb_submit_failed;
|
|
}
|
|
|
|
ictx->dev_present_intf1 = true;
|
|
|
|
mutex_unlock(&ictx->lock);
|
|
return ictx;
|
|
|
|
urb_submit_failed:
|
|
if (ictx->touch)
|
|
input_unregister_device(ictx->touch);
|
|
touch_setup_failed:
|
|
find_endpoint_failed:
|
|
usb_put_dev(ictx->usbdev_intf1);
|
|
mutex_unlock(&ictx->lock);
|
|
usb_free_urb(rx_urb);
|
|
rx_urb_alloc_failed:
|
|
dev_err(ictx->dev, "unable to initialize intf1, err %d\n", ret);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void imon_init_display(struct imon_context *ictx,
|
|
struct usb_interface *intf)
|
|
{
|
|
int ret;
|
|
|
|
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_attr_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");
|
|
|
|
}
|
|
|
|
/*
|
|
* Callback function for USB core API: Probe
|
|
*/
|
|
static int imon_probe(struct usb_interface *interface,
|
|
const struct usb_device_id *id)
|
|
{
|
|
struct usb_device *usbdev = NULL;
|
|
struct usb_host_interface *iface_desc = NULL;
|
|
struct usb_interface *first_if;
|
|
struct device *dev = &interface->dev;
|
|
int ifnum, sysfs_err;
|
|
int ret = 0;
|
|
struct imon_context *ictx = NULL;
|
|
struct imon_context *first_if_ctx = NULL;
|
|
u16 vendor, product;
|
|
|
|
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);
|
|
if (!first_if) {
|
|
ret = -ENODEV;
|
|
goto fail;
|
|
}
|
|
|
|
first_if_ctx = usb_get_intfdata(first_if);
|
|
|
|
if (ifnum == 0) {
|
|
ictx = imon_init_intf0(interface, id);
|
|
if (!ictx) {
|
|
pr_err("failed to initialize context!\n");
|
|
ret = -ENODEV;
|
|
goto fail;
|
|
}
|
|
|
|
} else {
|
|
/* this is the secondary interface on the device */
|
|
|
|
/* fail early if first intf failed to register */
|
|
if (!first_if_ctx) {
|
|
ret = -ENODEV;
|
|
goto fail;
|
|
}
|
|
|
|
ictx = imon_init_intf1(interface, first_if_ctx);
|
|
if (!ictx) {
|
|
pr_err("failed to attach to context!\n");
|
|
ret = -ENODEV;
|
|
goto fail;
|
|
}
|
|
|
|
}
|
|
|
|
usb_set_intfdata(interface, ictx);
|
|
|
|
if (ifnum == 0) {
|
|
mutex_lock(&ictx->lock);
|
|
|
|
if (product == 0xffdc && ictx->rf_device) {
|
|
sysfs_err = sysfs_create_group(&interface->dev.kobj,
|
|
&imon_rf_attr_group);
|
|
if (sysfs_err)
|
|
pr_err("Could not create RF sysfs entries(%d)\n",
|
|
sysfs_err);
|
|
}
|
|
|
|
if (ictx->display_supported)
|
|
imon_init_display(ictx, interface);
|
|
|
|
mutex_unlock(&ictx->lock);
|
|
}
|
|
|
|
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(&driver_lock);
|
|
usb_put_dev(usbdev);
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
mutex_unlock(&driver_lock);
|
|
usb_put_dev(usbdev);
|
|
dev_err(dev, "unable to register, err %d\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Callback function for USB core API: disconnect
|
|
*/
|
|
static void 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;
|
|
|
|
/*
|
|
* sysfs_remove_group is safe to call even if sysfs_create_group
|
|
* hasn't been called
|
|
*/
|
|
sysfs_remove_group(&interface->dev.kobj, &imon_display_attr_group);
|
|
sysfs_remove_group(&interface->dev.kobj, &imon_rf_attr_group);
|
|
|
|
usb_set_intfdata(interface, NULL);
|
|
|
|
/* Abort ongoing write */
|
|
if (ictx->tx.busy) {
|
|
usb_kill_urb(ictx->tx_urb);
|
|
complete(&ictx->tx.finished);
|
|
}
|
|
|
|
if (ifnum == 0) {
|
|
ictx->dev_present_intf0 = false;
|
|
usb_kill_urb(ictx->rx_urb_intf0);
|
|
usb_put_dev(ictx->usbdev_intf0);
|
|
input_unregister_device(ictx->idev);
|
|
rc_unregister_device(ictx->rdev);
|
|
if (ictx->display_supported) {
|
|
if (ictx->display_type == IMON_DISPLAY_TYPE_LCD)
|
|
usb_deregister_dev(interface, &imon_lcd_class);
|
|
else if (ictx->display_type == IMON_DISPLAY_TYPE_VFD)
|
|
usb_deregister_dev(interface, &imon_vfd_class);
|
|
}
|
|
} else {
|
|
ictx->dev_present_intf1 = false;
|
|
usb_kill_urb(ictx->rx_urb_intf1);
|
|
usb_put_dev(ictx->usbdev_intf1);
|
|
if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) {
|
|
input_unregister_device(ictx->touch);
|
|
del_timer_sync(&ictx->ttimer);
|
|
}
|
|
}
|
|
|
|
if (!ictx->dev_present_intf0 && !ictx->dev_present_intf1)
|
|
free_imon_context(ictx);
|
|
|
|
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;
|
|
}
|
|
|
|
module_usb_driver(imon_driver);
|