diff options
Diffstat (limited to 'drivers/staging/line6/variax.c')
| -rw-r--r-- | drivers/staging/line6/variax.c | 235 |
1 files changed, 0 insertions, 235 deletions
diff --git a/drivers/staging/line6/variax.c b/drivers/staging/line6/variax.c deleted file mode 100644 index ae2be99f9a92..000000000000 --- a/drivers/staging/line6/variax.c +++ /dev/null @@ -1,235 +0,0 @@ -/* - * Line6 Linux USB driver - 0.9.1beta - * - * Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation, version 2. - * - */ - -#include <linux/slab.h> - -#include "audio.h" -#include "driver.h" -#include "variax.h" - -#define VARIAX_OFFSET_ACTIVATE 7 - -/* - This message is sent by the device during initialization and identifies - the connected guitar version. -*/ -static const char variax_init_version[] = { - 0xf0, 0x7e, 0x7f, 0x06, 0x02, 0x00, 0x01, 0x0c, - 0x07, 0x00, 0x00, 0x00 -}; - -/* - This message is the last one sent by the device during initialization. -*/ -static const char variax_init_done[] = { - 0xf0, 0x00, 0x01, 0x0c, 0x07, 0x00, 0x6b -}; - -static const char variax_activate[] = { - 0xf0, 0x00, 0x01, 0x0c, 0x07, 0x00, 0x2a, 0x01, - 0xf7 -}; - -/* forward declarations: */ -static void variax_startup2(unsigned long data); -static void variax_startup4(unsigned long data); -static void variax_startup5(unsigned long data); - -static void variax_activate_async(struct usb_line6_variax *variax, int a) -{ - variax->buffer_activate[VARIAX_OFFSET_ACTIVATE] = a; - line6_send_raw_message_async(&variax->line6, variax->buffer_activate, - sizeof(variax_activate)); -} - -/* - Variax startup procedure. - This is a sequence of functions with special requirements (e.g., must - not run immediately after initialization, must not run in interrupt - context). After the last one has finished, the device is ready to use. -*/ - -static void variax_startup1(struct usb_line6_variax *variax) -{ - CHECK_STARTUP_PROGRESS(variax->startup_progress, VARIAX_STARTUP_INIT); - - /* delay startup procedure: */ - line6_start_timer(&variax->startup_timer1, VARIAX_STARTUP_DELAY1, - variax_startup2, (unsigned long)variax); -} - -static void variax_startup2(unsigned long data) -{ - struct usb_line6_variax *variax = (struct usb_line6_variax *)data; - struct usb_line6 *line6 = &variax->line6; - - /* schedule another startup procedure until startup is complete: */ - if (variax->startup_progress >= VARIAX_STARTUP_LAST) - return; - - variax->startup_progress = VARIAX_STARTUP_VERSIONREQ; - line6_start_timer(&variax->startup_timer1, VARIAX_STARTUP_DELAY1, - variax_startup2, (unsigned long)variax); - - /* request firmware version: */ - line6_version_request_async(line6); -} - -static void variax_startup3(struct usb_line6_variax *variax) -{ - CHECK_STARTUP_PROGRESS(variax->startup_progress, VARIAX_STARTUP_WAIT); - - /* delay startup procedure: */ - line6_start_timer(&variax->startup_timer2, VARIAX_STARTUP_DELAY3, - variax_startup4, (unsigned long)variax); -} - -static void variax_startup4(unsigned long data) -{ - struct usb_line6_variax *variax = (struct usb_line6_variax *)data; - - CHECK_STARTUP_PROGRESS(variax->startup_progress, - VARIAX_STARTUP_ACTIVATE); - - /* activate device: */ - variax_activate_async(variax, 1); - line6_start_timer(&variax->startup_timer2, VARIAX_STARTUP_DELAY4, - variax_startup5, (unsigned long)variax); -} - -static void variax_startup5(unsigned long data) -{ - struct usb_line6_variax *variax = (struct usb_line6_variax *)data; - - CHECK_STARTUP_PROGRESS(variax->startup_progress, - VARIAX_STARTUP_WORKQUEUE); - - /* schedule work for global work queue: */ - schedule_work(&variax->startup_work); -} - -static void variax_startup6(struct work_struct *work) -{ - struct usb_line6_variax *variax = - container_of(work, struct usb_line6_variax, startup_work); - - CHECK_STARTUP_PROGRESS(variax->startup_progress, VARIAX_STARTUP_SETUP); - - /* ALSA audio interface: */ - line6_register_audio(&variax->line6); -} - -/* - Process a completely received message. -*/ -void line6_variax_process_message(struct usb_line6_variax *variax) -{ - const unsigned char *buf = variax->line6.buffer_message; - - switch (buf[0]) { - case LINE6_RESET: - dev_info(variax->line6.ifcdev, "VARIAX reset\n"); - break; - - case LINE6_SYSEX_BEGIN: - if (memcmp(buf + 1, variax_init_version + 1, - sizeof(variax_init_version) - 1) == 0) { - variax_startup3(variax); - } else if (memcmp(buf + 1, variax_init_done + 1, - sizeof(variax_init_done) - 1) == 0) { - /* notify of complete initialization: */ - variax_startup4((unsigned long)variax); - } - break; - } -} - -/* - Variax destructor. -*/ -static void variax_destruct(struct usb_interface *interface) -{ - struct usb_line6_variax *variax = usb_get_intfdata(interface); - - if (variax == NULL) - return; - line6_cleanup_audio(&variax->line6); - - del_timer(&variax->startup_timer1); - del_timer(&variax->startup_timer2); - cancel_work_sync(&variax->startup_work); - - kfree(variax->buffer_activate); -} - -/* - Try to init workbench device. -*/ -static int variax_try_init(struct usb_interface *interface, - struct usb_line6_variax *variax) -{ - int err; - - init_timer(&variax->startup_timer1); - init_timer(&variax->startup_timer2); - INIT_WORK(&variax->startup_work, variax_startup6); - - if ((interface == NULL) || (variax == NULL)) - return -ENODEV; - - /* initialize USB buffers: */ - variax->buffer_activate = kmemdup(variax_activate, - sizeof(variax_activate), GFP_KERNEL); - - if (variax->buffer_activate == NULL) { - dev_err(&interface->dev, "Out of memory\n"); - return -ENOMEM; - } - - /* initialize audio system: */ - err = line6_init_audio(&variax->line6); - if (err < 0) - return err; - - /* initialize MIDI subsystem: */ - err = line6_init_midi(&variax->line6); - if (err < 0) - return err; - - /* initiate startup procedure: */ - variax_startup1(variax); - return 0; -} - -/* - Init workbench device (and clean up in case of failure). -*/ -int line6_variax_init(struct usb_interface *interface, - struct usb_line6_variax *variax) -{ - int err = variax_try_init(interface, variax); - - if (err < 0) - variax_destruct(interface); - - return err; -} - -/* - Workbench device disconnected. -*/ -void line6_variax_disconnect(struct usb_interface *interface) -{ - if (interface == NULL) - return; - - variax_destruct(interface); -} |