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894 lines
20 KiB
894 lines
20 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* HID driver for the Prodikeys PC-MIDI Keyboard |
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* providing midi & extra multimedia keys functionality |
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* |
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* Copyright (c) 2009 Don Prince <[email protected]> |
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* |
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* Controls for Octave Shift Up/Down, Channel, and |
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* Sustain Duration available via sysfs. |
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*/ |
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/* |
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*/ |
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|
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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#include <linux/device.h> |
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#include <linux/module.h> |
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#include <linux/usb.h> |
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#include <linux/mutex.h> |
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#include <linux/hid.h> |
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#include <sound/core.h> |
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#include <sound/initval.h> |
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#include <sound/rawmidi.h> |
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#include "hid-ids.h" |
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#define pk_debug(format, arg...) \ |
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pr_debug("hid-prodikeys: " format "\n" , ## arg) |
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#define pk_error(format, arg...) \ |
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pr_err("hid-prodikeys: " format "\n" , ## arg) |
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struct pcmidi_snd; |
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struct pk_device { |
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unsigned long quirks; |
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struct hid_device *hdev; |
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struct pcmidi_snd *pm; /* pcmidi device context */ |
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}; |
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struct pcmidi_sustain { |
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unsigned long in_use; |
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struct pcmidi_snd *pm; |
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struct timer_list timer; |
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unsigned char status; |
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unsigned char note; |
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unsigned char velocity; |
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}; |
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#define PCMIDI_SUSTAINED_MAX 32 |
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struct pcmidi_snd { |
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struct pk_device *pk; |
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unsigned short ifnum; |
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struct hid_report *pcmidi_report6; |
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struct input_dev *input_ep82; |
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unsigned short midi_mode; |
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unsigned short midi_sustain_mode; |
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unsigned short midi_sustain; |
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unsigned short midi_channel; |
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short midi_octave; |
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struct pcmidi_sustain sustained_notes[PCMIDI_SUSTAINED_MAX]; |
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unsigned short fn_state; |
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unsigned short last_key[24]; |
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spinlock_t rawmidi_in_lock; |
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struct snd_card *card; |
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struct snd_rawmidi *rwmidi; |
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struct snd_rawmidi_substream *in_substream; |
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struct snd_rawmidi_substream *out_substream; |
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unsigned long in_triggered; |
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unsigned long out_active; |
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}; |
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#define PK_QUIRK_NOGET 0x00010000 |
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#define PCMIDI_MIDDLE_C 60 |
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#define PCMIDI_CHANNEL_MIN 0 |
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#define PCMIDI_CHANNEL_MAX 15 |
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#define PCMIDI_OCTAVE_MIN (-2) |
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#define PCMIDI_OCTAVE_MAX 2 |
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#define PCMIDI_SUSTAIN_MIN 0 |
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#define PCMIDI_SUSTAIN_MAX 5000 |
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static const char shortname[] = "PC-MIDI"; |
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static const char longname[] = "Prodikeys PC-MIDI Keyboard"; |
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static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; |
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static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; |
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static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; |
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module_param_array(index, int, NULL, 0444); |
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module_param_array(id, charp, NULL, 0444); |
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module_param_array(enable, bool, NULL, 0444); |
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MODULE_PARM_DESC(index, "Index value for the PC-MIDI virtual audio driver"); |
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MODULE_PARM_DESC(id, "ID string for the PC-MIDI virtual audio driver"); |
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MODULE_PARM_DESC(enable, "Enable for the PC-MIDI virtual audio driver"); |
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/* Output routine for the sysfs channel file */ |
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static ssize_t show_channel(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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struct hid_device *hdev = to_hid_device(dev); |
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struct pk_device *pk = hid_get_drvdata(hdev); |
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dbg_hid("pcmidi sysfs read channel=%u\n", pk->pm->midi_channel); |
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return sprintf(buf, "%u (min:%u, max:%u)\n", pk->pm->midi_channel, |
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PCMIDI_CHANNEL_MIN, PCMIDI_CHANNEL_MAX); |
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} |
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/* Input routine for the sysfs channel file */ |
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static ssize_t store_channel(struct device *dev, |
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struct device_attribute *attr, const char *buf, size_t count) |
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{ |
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struct hid_device *hdev = to_hid_device(dev); |
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struct pk_device *pk = hid_get_drvdata(hdev); |
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unsigned channel = 0; |
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if (sscanf(buf, "%u", &channel) > 0 && channel <= PCMIDI_CHANNEL_MAX) { |
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dbg_hid("pcmidi sysfs write channel=%u\n", channel); |
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pk->pm->midi_channel = channel; |
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return strlen(buf); |
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} |
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return -EINVAL; |
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} |
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static DEVICE_ATTR(channel, S_IRUGO | S_IWUSR | S_IWGRP , show_channel, |
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store_channel); |
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static struct device_attribute *sysfs_device_attr_channel = { |
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&dev_attr_channel, |
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}; |
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/* Output routine for the sysfs sustain file */ |
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static ssize_t show_sustain(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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struct hid_device *hdev = to_hid_device(dev); |
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struct pk_device *pk = hid_get_drvdata(hdev); |
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dbg_hid("pcmidi sysfs read sustain=%u\n", pk->pm->midi_sustain); |
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return sprintf(buf, "%u (off:%u, max:%u (ms))\n", pk->pm->midi_sustain, |
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PCMIDI_SUSTAIN_MIN, PCMIDI_SUSTAIN_MAX); |
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} |
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/* Input routine for the sysfs sustain file */ |
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static ssize_t store_sustain(struct device *dev, |
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struct device_attribute *attr, const char *buf, size_t count) |
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{ |
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struct hid_device *hdev = to_hid_device(dev); |
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struct pk_device *pk = hid_get_drvdata(hdev); |
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unsigned sustain = 0; |
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if (sscanf(buf, "%u", &sustain) > 0 && sustain <= PCMIDI_SUSTAIN_MAX) { |
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dbg_hid("pcmidi sysfs write sustain=%u\n", sustain); |
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pk->pm->midi_sustain = sustain; |
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pk->pm->midi_sustain_mode = |
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(0 == sustain || !pk->pm->midi_mode) ? 0 : 1; |
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return strlen(buf); |
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} |
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return -EINVAL; |
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} |
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static DEVICE_ATTR(sustain, S_IRUGO | S_IWUSR | S_IWGRP, show_sustain, |
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store_sustain); |
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static struct device_attribute *sysfs_device_attr_sustain = { |
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&dev_attr_sustain, |
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}; |
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/* Output routine for the sysfs octave file */ |
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static ssize_t show_octave(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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struct hid_device *hdev = to_hid_device(dev); |
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struct pk_device *pk = hid_get_drvdata(hdev); |
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dbg_hid("pcmidi sysfs read octave=%d\n", pk->pm->midi_octave); |
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return sprintf(buf, "%d (min:%d, max:%d)\n", pk->pm->midi_octave, |
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PCMIDI_OCTAVE_MIN, PCMIDI_OCTAVE_MAX); |
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} |
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/* Input routine for the sysfs octave file */ |
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static ssize_t store_octave(struct device *dev, |
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struct device_attribute *attr, const char *buf, size_t count) |
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{ |
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struct hid_device *hdev = to_hid_device(dev); |
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struct pk_device *pk = hid_get_drvdata(hdev); |
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int octave = 0; |
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if (sscanf(buf, "%d", &octave) > 0 && |
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octave >= PCMIDI_OCTAVE_MIN && octave <= PCMIDI_OCTAVE_MAX) { |
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dbg_hid("pcmidi sysfs write octave=%d\n", octave); |
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pk->pm->midi_octave = octave; |
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return strlen(buf); |
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} |
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return -EINVAL; |
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} |
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static DEVICE_ATTR(octave, S_IRUGO | S_IWUSR | S_IWGRP, show_octave, |
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store_octave); |
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static struct device_attribute *sysfs_device_attr_octave = { |
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&dev_attr_octave, |
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}; |
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static void pcmidi_send_note(struct pcmidi_snd *pm, |
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unsigned char status, unsigned char note, unsigned char velocity) |
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{ |
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unsigned long flags; |
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unsigned char buffer[3]; |
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buffer[0] = status; |
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buffer[1] = note; |
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buffer[2] = velocity; |
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spin_lock_irqsave(&pm->rawmidi_in_lock, flags); |
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if (!pm->in_substream) |
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goto drop_note; |
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if (!test_bit(pm->in_substream->number, &pm->in_triggered)) |
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goto drop_note; |
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snd_rawmidi_receive(pm->in_substream, buffer, 3); |
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drop_note: |
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spin_unlock_irqrestore(&pm->rawmidi_in_lock, flags); |
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return; |
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} |
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static void pcmidi_sustained_note_release(struct timer_list *t) |
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{ |
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struct pcmidi_sustain *pms = from_timer(pms, t, timer); |
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pcmidi_send_note(pms->pm, pms->status, pms->note, pms->velocity); |
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pms->in_use = 0; |
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} |
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static void init_sustain_timers(struct pcmidi_snd *pm) |
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{ |
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struct pcmidi_sustain *pms; |
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unsigned i; |
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for (i = 0; i < PCMIDI_SUSTAINED_MAX; i++) { |
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pms = &pm->sustained_notes[i]; |
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pms->in_use = 0; |
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pms->pm = pm; |
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timer_setup(&pms->timer, pcmidi_sustained_note_release, 0); |
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} |
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} |
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static void stop_sustain_timers(struct pcmidi_snd *pm) |
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{ |
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struct pcmidi_sustain *pms; |
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unsigned i; |
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for (i = 0; i < PCMIDI_SUSTAINED_MAX; i++) { |
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pms = &pm->sustained_notes[i]; |
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pms->in_use = 1; |
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del_timer_sync(&pms->timer); |
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} |
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} |
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static int pcmidi_get_output_report(struct pcmidi_snd *pm) |
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{ |
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struct hid_device *hdev = pm->pk->hdev; |
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struct hid_report *report; |
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list_for_each_entry(report, |
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&hdev->report_enum[HID_OUTPUT_REPORT].report_list, list) { |
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if (!(6 == report->id)) |
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continue; |
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if (report->maxfield < 1) { |
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hid_err(hdev, "output report is empty\n"); |
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break; |
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} |
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if (report->field[0]->report_count != 2) { |
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hid_err(hdev, "field count too low\n"); |
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break; |
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} |
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pm->pcmidi_report6 = report; |
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return 0; |
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} |
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/* should never get here */ |
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return -ENODEV; |
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} |
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static void pcmidi_submit_output_report(struct pcmidi_snd *pm, int state) |
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{ |
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struct hid_device *hdev = pm->pk->hdev; |
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struct hid_report *report = pm->pcmidi_report6; |
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report->field[0]->value[0] = 0x01; |
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report->field[0]->value[1] = state; |
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hid_hw_request(hdev, report, HID_REQ_SET_REPORT); |
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} |
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static int pcmidi_handle_report1(struct pcmidi_snd *pm, u8 *data) |
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{ |
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u32 bit_mask; |
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bit_mask = data[1]; |
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bit_mask = (bit_mask << 8) | data[2]; |
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bit_mask = (bit_mask << 8) | data[3]; |
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dbg_hid("pcmidi mode: %d\n", pm->midi_mode); |
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/*KEY_MAIL or octave down*/ |
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if (pm->midi_mode && bit_mask == 0x004000) { |
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/* octave down */ |
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pm->midi_octave--; |
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if (pm->midi_octave < -2) |
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pm->midi_octave = -2; |
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dbg_hid("pcmidi mode: %d octave: %d\n", |
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pm->midi_mode, pm->midi_octave); |
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return 1; |
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} |
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/*KEY_WWW or sustain*/ |
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else if (pm->midi_mode && bit_mask == 0x000004) { |
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/* sustain on/off*/ |
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pm->midi_sustain_mode ^= 0x1; |
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return 1; |
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} |
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return 0; /* continue key processing */ |
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} |
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static int pcmidi_handle_report3(struct pcmidi_snd *pm, u8 *data, int size) |
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{ |
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struct pcmidi_sustain *pms; |
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unsigned i, j; |
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unsigned char status, note, velocity; |
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unsigned num_notes = (size-1)/2; |
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for (j = 0; j < num_notes; j++) { |
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note = data[j*2+1]; |
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velocity = data[j*2+2]; |
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if (note < 0x81) { /* note on */ |
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status = 128 + 16 + pm->midi_channel; /* 1001nnnn */ |
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note = note - 0x54 + PCMIDI_MIDDLE_C + |
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(pm->midi_octave * 12); |
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if (0 == velocity) |
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velocity = 1; /* force note on */ |
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} else { /* note off */ |
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status = 128 + pm->midi_channel; /* 1000nnnn */ |
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note = note - 0x94 + PCMIDI_MIDDLE_C + |
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(pm->midi_octave*12); |
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if (pm->midi_sustain_mode) { |
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for (i = 0; i < PCMIDI_SUSTAINED_MAX; i++) { |
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pms = &pm->sustained_notes[i]; |
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if (!pms->in_use) { |
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pms->status = status; |
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pms->note = note; |
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pms->velocity = velocity; |
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pms->in_use = 1; |
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mod_timer(&pms->timer, |
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jiffies + |
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msecs_to_jiffies(pm->midi_sustain)); |
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return 1; |
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} |
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} |
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} |
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} |
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pcmidi_send_note(pm, status, note, velocity); |
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} |
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return 1; |
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} |
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static int pcmidi_handle_report4(struct pcmidi_snd *pm, u8 *data) |
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{ |
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unsigned key; |
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u32 bit_mask; |
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u32 bit_index; |
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bit_mask = data[1]; |
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bit_mask = (bit_mask << 8) | data[2]; |
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bit_mask = (bit_mask << 8) | data[3]; |
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/* break keys */ |
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for (bit_index = 0; bit_index < 24; bit_index++) { |
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if (!((0x01 << bit_index) & bit_mask)) { |
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input_event(pm->input_ep82, EV_KEY, |
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pm->last_key[bit_index], 0); |
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pm->last_key[bit_index] = 0; |
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} |
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} |
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/* make keys */ |
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for (bit_index = 0; bit_index < 24; bit_index++) { |
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key = 0; |
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switch ((0x01 << bit_index) & bit_mask) { |
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case 0x000010: /* Fn lock*/ |
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pm->fn_state ^= 0x000010; |
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if (pm->fn_state) |
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pcmidi_submit_output_report(pm, 0xc5); |
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else |
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pcmidi_submit_output_report(pm, 0xc6); |
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continue; |
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case 0x020000: /* midi launcher..send a key (qwerty) or not? */ |
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pcmidi_submit_output_report(pm, 0xc1); |
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pm->midi_mode ^= 0x01; |
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dbg_hid("pcmidi mode: %d\n", pm->midi_mode); |
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continue; |
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case 0x100000: /* KEY_MESSENGER or octave up */ |
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dbg_hid("pcmidi mode: %d\n", pm->midi_mode); |
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if (pm->midi_mode) { |
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pm->midi_octave++; |
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if (pm->midi_octave > 2) |
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pm->midi_octave = 2; |
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dbg_hid("pcmidi mode: %d octave: %d\n", |
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pm->midi_mode, pm->midi_octave); |
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continue; |
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} else |
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key = KEY_MESSENGER; |
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break; |
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case 0x400000: |
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key = KEY_CALENDAR; |
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break; |
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case 0x080000: |
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key = KEY_ADDRESSBOOK; |
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break; |
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case 0x040000: |
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key = KEY_DOCUMENTS; |
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break; |
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case 0x800000: |
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key = KEY_WORDPROCESSOR; |
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break; |
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case 0x200000: |
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key = KEY_SPREADSHEET; |
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break; |
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case 0x010000: |
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key = KEY_COFFEE; |
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break; |
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case 0x000100: |
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key = KEY_HELP; |
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break; |
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case 0x000200: |
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key = KEY_SEND; |
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break; |
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case 0x000400: |
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key = KEY_REPLY; |
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break; |
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case 0x000800: |
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key = KEY_FORWARDMAIL; |
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break; |
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case 0x001000: |
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key = KEY_NEW; |
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break; |
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case 0x002000: |
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key = KEY_OPEN; |
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break; |
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case 0x004000: |
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key = KEY_CLOSE; |
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break; |
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case 0x008000: |
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key = KEY_SAVE; |
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break; |
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case 0x000001: |
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key = KEY_UNDO; |
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break; |
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case 0x000002: |
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key = KEY_REDO; |
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break; |
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case 0x000004: |
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key = KEY_SPELLCHECK; |
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break; |
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case 0x000008: |
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key = KEY_PRINT; |
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break; |
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} |
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if (key) { |
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input_event(pm->input_ep82, EV_KEY, key, 1); |
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pm->last_key[bit_index] = key; |
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} |
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} |
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return 1; |
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} |
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static int pcmidi_handle_report( |
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struct pcmidi_snd *pm, unsigned report_id, u8 *data, int size) |
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{ |
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int ret = 0; |
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switch (report_id) { |
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case 0x01: /* midi keys (qwerty)*/ |
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ret = pcmidi_handle_report1(pm, data); |
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break; |
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case 0x03: /* midi keyboard (musical)*/ |
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ret = pcmidi_handle_report3(pm, data, size); |
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break; |
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case 0x04: /* multimedia/midi keys (qwerty)*/ |
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ret = pcmidi_handle_report4(pm, data); |
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break; |
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} |
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return ret; |
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} |
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static void pcmidi_setup_extra_keys( |
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struct pcmidi_snd *pm, struct input_dev *input) |
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{ |
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/* reassigned functionality for N/A keys |
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MY PICTURES => KEY_WORDPROCESSOR |
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MY MUSIC=> KEY_SPREADSHEET |
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*/ |
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static const unsigned int keys[] = { |
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KEY_FN, |
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KEY_MESSENGER, KEY_CALENDAR, |
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KEY_ADDRESSBOOK, KEY_DOCUMENTS, |
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KEY_WORDPROCESSOR, |
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KEY_SPREADSHEET, |
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KEY_COFFEE, |
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KEY_HELP, KEY_SEND, |
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KEY_REPLY, KEY_FORWARDMAIL, |
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KEY_NEW, KEY_OPEN, |
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KEY_CLOSE, KEY_SAVE, |
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KEY_UNDO, KEY_REDO, |
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KEY_SPELLCHECK, KEY_PRINT, |
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0 |
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}; |
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const unsigned int *pkeys = &keys[0]; |
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unsigned short i; |
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if (pm->ifnum != 1) /* only set up ONCE for interace 1 */ |
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return; |
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pm->input_ep82 = input; |
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for (i = 0; i < 24; i++) |
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pm->last_key[i] = 0; |
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while (*pkeys != 0) { |
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set_bit(*pkeys, pm->input_ep82->keybit); |
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++pkeys; |
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} |
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} |
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static int pcmidi_set_operational(struct pcmidi_snd *pm) |
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{ |
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int rc; |
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if (pm->ifnum != 1) |
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return 0; /* only set up ONCE for interace 1 */ |
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rc = pcmidi_get_output_report(pm); |
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if (rc < 0) |
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return rc; |
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pcmidi_submit_output_report(pm, 0xc1); |
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return 0; |
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} |
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static int pcmidi_snd_free(struct snd_device *dev) |
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{ |
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return 0; |
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} |
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|
|
static int pcmidi_in_open(struct snd_rawmidi_substream *substream) |
|
{ |
|
struct pcmidi_snd *pm = substream->rmidi->private_data; |
|
|
|
dbg_hid("pcmidi in open\n"); |
|
pm->in_substream = substream; |
|
return 0; |
|
} |
|
|
|
static int pcmidi_in_close(struct snd_rawmidi_substream *substream) |
|
{ |
|
dbg_hid("pcmidi in close\n"); |
|
return 0; |
|
} |
|
|
|
static void pcmidi_in_trigger(struct snd_rawmidi_substream *substream, int up) |
|
{ |
|
struct pcmidi_snd *pm = substream->rmidi->private_data; |
|
|
|
dbg_hid("pcmidi in trigger %d\n", up); |
|
|
|
pm->in_triggered = up; |
|
} |
|
|
|
static const struct snd_rawmidi_ops pcmidi_in_ops = { |
|
.open = pcmidi_in_open, |
|
.close = pcmidi_in_close, |
|
.trigger = pcmidi_in_trigger |
|
}; |
|
|
|
static int pcmidi_snd_initialise(struct pcmidi_snd *pm) |
|
{ |
|
static int dev; |
|
struct snd_card *card; |
|
struct snd_rawmidi *rwmidi; |
|
int err; |
|
|
|
static struct snd_device_ops ops = { |
|
.dev_free = pcmidi_snd_free, |
|
}; |
|
|
|
if (pm->ifnum != 1) |
|
return 0; /* only set up midi device ONCE for interace 1 */ |
|
|
|
if (dev >= SNDRV_CARDS) |
|
return -ENODEV; |
|
|
|
if (!enable[dev]) { |
|
dev++; |
|
return -ENOENT; |
|
} |
|
|
|
/* Setup sound card */ |
|
|
|
err = snd_card_new(&pm->pk->hdev->dev, index[dev], id[dev], |
|
THIS_MODULE, 0, &card); |
|
if (err < 0) { |
|
pk_error("failed to create pc-midi sound card\n"); |
|
err = -ENOMEM; |
|
goto fail; |
|
} |
|
pm->card = card; |
|
|
|
/* Setup sound device */ |
|
err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, pm, &ops); |
|
if (err < 0) { |
|
pk_error("failed to create pc-midi sound device: error %d\n", |
|
err); |
|
goto fail; |
|
} |
|
|
|
strncpy(card->driver, shortname, sizeof(card->driver)); |
|
strncpy(card->shortname, shortname, sizeof(card->shortname)); |
|
strncpy(card->longname, longname, sizeof(card->longname)); |
|
|
|
/* Set up rawmidi */ |
|
err = snd_rawmidi_new(card, card->shortname, 0, |
|
0, 1, &rwmidi); |
|
if (err < 0) { |
|
pk_error("failed to create pc-midi rawmidi device: error %d\n", |
|
err); |
|
goto fail; |
|
} |
|
pm->rwmidi = rwmidi; |
|
strncpy(rwmidi->name, card->shortname, sizeof(rwmidi->name)); |
|
rwmidi->info_flags = SNDRV_RAWMIDI_INFO_INPUT; |
|
rwmidi->private_data = pm; |
|
|
|
snd_rawmidi_set_ops(rwmidi, SNDRV_RAWMIDI_STREAM_INPUT, |
|
&pcmidi_in_ops); |
|
|
|
/* create sysfs variables */ |
|
err = device_create_file(&pm->pk->hdev->dev, |
|
sysfs_device_attr_channel); |
|
if (err < 0) { |
|
pk_error("failed to create sysfs attribute channel: error %d\n", |
|
err); |
|
goto fail; |
|
} |
|
|
|
err = device_create_file(&pm->pk->hdev->dev, |
|
sysfs_device_attr_sustain); |
|
if (err < 0) { |
|
pk_error("failed to create sysfs attribute sustain: error %d\n", |
|
err); |
|
goto fail_attr_sustain; |
|
} |
|
|
|
err = device_create_file(&pm->pk->hdev->dev, |
|
sysfs_device_attr_octave); |
|
if (err < 0) { |
|
pk_error("failed to create sysfs attribute octave: error %d\n", |
|
err); |
|
goto fail_attr_octave; |
|
} |
|
|
|
spin_lock_init(&pm->rawmidi_in_lock); |
|
|
|
init_sustain_timers(pm); |
|
err = pcmidi_set_operational(pm); |
|
if (err < 0) { |
|
pk_error("failed to find output report\n"); |
|
goto fail_register; |
|
} |
|
|
|
/* register it */ |
|
err = snd_card_register(card); |
|
if (err < 0) { |
|
pk_error("failed to register pc-midi sound card: error %d\n", |
|
err); |
|
goto fail_register; |
|
} |
|
|
|
dbg_hid("pcmidi_snd_initialise finished ok\n"); |
|
return 0; |
|
|
|
fail_register: |
|
stop_sustain_timers(pm); |
|
device_remove_file(&pm->pk->hdev->dev, sysfs_device_attr_octave); |
|
fail_attr_octave: |
|
device_remove_file(&pm->pk->hdev->dev, sysfs_device_attr_sustain); |
|
fail_attr_sustain: |
|
device_remove_file(&pm->pk->hdev->dev, sysfs_device_attr_channel); |
|
fail: |
|
if (pm->card) { |
|
snd_card_free(pm->card); |
|
pm->card = NULL; |
|
} |
|
return err; |
|
} |
|
|
|
static int pcmidi_snd_terminate(struct pcmidi_snd *pm) |
|
{ |
|
if (pm->card) { |
|
stop_sustain_timers(pm); |
|
|
|
device_remove_file(&pm->pk->hdev->dev, |
|
sysfs_device_attr_channel); |
|
device_remove_file(&pm->pk->hdev->dev, |
|
sysfs_device_attr_sustain); |
|
device_remove_file(&pm->pk->hdev->dev, |
|
sysfs_device_attr_octave); |
|
|
|
snd_card_disconnect(pm->card); |
|
snd_card_free_when_closed(pm->card); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* PC-MIDI report descriptor for report id is wrong. |
|
*/ |
|
static __u8 *pk_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
|
unsigned int *rsize) |
|
{ |
|
if (*rsize == 178 && |
|
rdesc[111] == 0x06 && rdesc[112] == 0x00 && |
|
rdesc[113] == 0xff) { |
|
hid_info(hdev, |
|
"fixing up pc-midi keyboard report descriptor\n"); |
|
|
|
rdesc[144] = 0x18; /* report 4: was 0x10 report count */ |
|
} |
|
return rdesc; |
|
} |
|
|
|
static int pk_input_mapping(struct hid_device *hdev, struct hid_input *hi, |
|
struct hid_field *field, struct hid_usage *usage, |
|
unsigned long **bit, int *max) |
|
{ |
|
struct pk_device *pk = hid_get_drvdata(hdev); |
|
struct pcmidi_snd *pm; |
|
|
|
pm = pk->pm; |
|
|
|
if (HID_UP_MSVENDOR == (usage->hid & HID_USAGE_PAGE) && |
|
1 == pm->ifnum) { |
|
pcmidi_setup_extra_keys(pm, hi->input); |
|
return 0; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
|
|
static int pk_raw_event(struct hid_device *hdev, struct hid_report *report, |
|
u8 *data, int size) |
|
{ |
|
struct pk_device *pk = hid_get_drvdata(hdev); |
|
int ret = 0; |
|
|
|
if (1 == pk->pm->ifnum) { |
|
if (report->id == data[0]) |
|
switch (report->id) { |
|
case 0x01: /* midi keys (qwerty)*/ |
|
case 0x03: /* midi keyboard (musical)*/ |
|
case 0x04: /* extra/midi keys (qwerty)*/ |
|
ret = pcmidi_handle_report(pk->pm, |
|
report->id, data, size); |
|
break; |
|
} |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
static int pk_probe(struct hid_device *hdev, const struct hid_device_id *id) |
|
{ |
|
int ret; |
|
struct usb_interface *intf = to_usb_interface(hdev->dev.parent); |
|
unsigned short ifnum = intf->cur_altsetting->desc.bInterfaceNumber; |
|
unsigned long quirks = id->driver_data; |
|
struct pk_device *pk; |
|
struct pcmidi_snd *pm = NULL; |
|
|
|
pk = kzalloc(sizeof(*pk), GFP_KERNEL); |
|
if (pk == NULL) { |
|
hid_err(hdev, "can't alloc descriptor\n"); |
|
return -ENOMEM; |
|
} |
|
|
|
pk->hdev = hdev; |
|
|
|
pm = kzalloc(sizeof(*pm), GFP_KERNEL); |
|
if (pm == NULL) { |
|
hid_err(hdev, "can't alloc descriptor\n"); |
|
ret = -ENOMEM; |
|
goto err_free_pk; |
|
} |
|
|
|
pm->pk = pk; |
|
pk->pm = pm; |
|
pm->ifnum = ifnum; |
|
|
|
hid_set_drvdata(hdev, pk); |
|
|
|
ret = hid_parse(hdev); |
|
if (ret) { |
|
hid_err(hdev, "hid parse failed\n"); |
|
goto err_free; |
|
} |
|
|
|
if (quirks & PK_QUIRK_NOGET) { /* hid_parse cleared all the quirks */ |
|
hdev->quirks |= HID_QUIRK_NOGET; |
|
} |
|
|
|
ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); |
|
if (ret) { |
|
hid_err(hdev, "hw start failed\n"); |
|
goto err_free; |
|
} |
|
|
|
ret = pcmidi_snd_initialise(pm); |
|
if (ret < 0) |
|
goto err_stop; |
|
|
|
return 0; |
|
err_stop: |
|
hid_hw_stop(hdev); |
|
err_free: |
|
kfree(pm); |
|
err_free_pk: |
|
kfree(pk); |
|
|
|
return ret; |
|
} |
|
|
|
static void pk_remove(struct hid_device *hdev) |
|
{ |
|
struct pk_device *pk = hid_get_drvdata(hdev); |
|
struct pcmidi_snd *pm; |
|
|
|
pm = pk->pm; |
|
if (pm) { |
|
pcmidi_snd_terminate(pm); |
|
kfree(pm); |
|
} |
|
|
|
hid_hw_stop(hdev); |
|
|
|
kfree(pk); |
|
} |
|
|
|
static const struct hid_device_id pk_devices[] = { |
|
{HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, |
|
USB_DEVICE_ID_PRODIKEYS_PCMIDI), |
|
.driver_data = PK_QUIRK_NOGET}, |
|
{ } |
|
}; |
|
MODULE_DEVICE_TABLE(hid, pk_devices); |
|
|
|
static struct hid_driver pk_driver = { |
|
.name = "prodikeys", |
|
.id_table = pk_devices, |
|
.report_fixup = pk_report_fixup, |
|
.input_mapping = pk_input_mapping, |
|
.raw_event = pk_raw_event, |
|
.probe = pk_probe, |
|
.remove = pk_remove, |
|
}; |
|
module_hid_driver(pk_driver); |
|
|
|
MODULE_LICENSE("GPL");
|
|
|