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2597 lines
70 KiB
2597 lines
70 KiB
// 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 <[email protected]> |
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* Portions based on the original lirc_imon driver, |
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* Copyright(C) 2004 Venky Raju([email protected]) |
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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 <[email protected]>" |
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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) */ |
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{ USB_DEVICE(0x15c2, 0x0045), |
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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, 0x0046), |
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.driver_info = (unsigned long)&imon_default_table}, |
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{} |
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}; |
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/* USB Device data */ |
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static struct usb_driver imon_driver = { |
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.name = MOD_NAME, |
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.probe = imon_probe, |
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.disconnect = imon_disconnect, |
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.suspend = imon_suspend, |
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.resume = imon_resume, |
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.id_table = imon_usb_id_table, |
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}; |
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/* to prevent races between open() and disconnect(), probing, etc */ |
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static DEFINE_MUTEX(driver_lock); |
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|
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/* Module bookkeeping bits */ |
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MODULE_AUTHOR(MOD_AUTHOR); |
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MODULE_DESCRIPTION(MOD_DESC); |
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MODULE_VERSION(MOD_VERSION); |
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MODULE_LICENSE("GPL"); |
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MODULE_DEVICE_TABLE(usb, imon_usb_id_table); |
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static bool debug; |
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module_param(debug, bool, S_IRUGO | S_IWUSR); |
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MODULE_PARM_DESC(debug, "Debug messages: 0=no, 1=yes (default: no)"); |
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/* lcd, vfd, vga or none? should be auto-detected, but can be overridden... */ |
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static int display_type; |
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module_param(display_type, int, S_IRUGO); |
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MODULE_PARM_DESC(display_type, "Type of attached display. 0=autodetect, 1=vfd, 2=lcd, 3=vga, 4=none (default: autodetect)"); |
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static int pad_stabilize = 1; |
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module_param(pad_stabilize, int, S_IRUGO | S_IWUSR); |
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MODULE_PARM_DESC(pad_stabilize, "Apply stabilization algorithm to iMON PAD presses in arrow key mode. 0=disable, 1=enable (default)."); |
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|
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/* |
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* In certain use cases, mouse mode isn't really helpful, and could actually |
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* cause confusion, so allow disabling it when the IR device is open. |
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*/ |
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static bool nomouse; |
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module_param(nomouse, bool, S_IRUGO | S_IWUSR); |
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MODULE_PARM_DESC(nomouse, "Disable mouse input device mode when IR device is open. 0=don't disable, 1=disable. (default: don't disable)"); |
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|
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/* threshold at which a pad push registers as an arrow key in kbd mode */ |
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static int pad_thresh; |
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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 associate_remote_show(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 associate_remote_store(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 imon_clock_show(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 imon_clock_store(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_RW(imon_clock); |
|
static DEVICE_ATTR_RW(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); |
|
ictx->usbdev_intf1 = NULL; |
|
mutex_unlock(&ictx->lock); |
|
usb_free_urb(rx_urb); |
|
ictx->rx_urb_intf1 = NULL; |
|
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);
|
|
|