| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Matthias Koenig | 3939 | 94.48% | 1 | 4.17% |
| Sudip Mukherjee | 115 | 2.76% | 2 | 8.33% |
| Takashi Iwai | 93 | 2.23% | 11 | 45.83% |
| Cui GaoSheng | 6 | 0.14% | 1 | 4.17% |
| Paul Gortmaker | 3 | 0.07% | 1 | 4.17% |
| Joe Perches | 3 | 0.07% | 1 | 4.17% |
| Thomas Gleixner | 2 | 0.05% | 1 | 4.17% |
| Linus Torvalds (pre-git) | 2 | 0.05% | 1 | 4.17% |
| Uwe Kleine-König | 2 | 0.05% | 1 | 4.17% |
| Linus Torvalds | 1 | 0.02% | 1 | 4.17% |
| Akinobu Mita | 1 | 0.02% | 1 | 4.17% |
| Al Viro | 1 | 0.02% | 1 | 4.17% |
| Rusty Russell | 1 | 0.02% | 1 | 4.17% |
| Total | 4169 | 24 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * ALSA Driver for Ego Systems Inc. (ESI) Miditerminal 4140 * Copyright (c) 2006 by Matthias König <mk@phasorlab.de> */ #include <linux/init.h> #include <linux/platform_device.h> #include <linux/parport.h> #include <linux/spinlock.h> #include <linux/module.h> #include <linux/delay.h> #include <linux/slab.h> #include <sound/core.h> #include <sound/initval.h> #include <sound/rawmidi.h> #include <sound/control.h> #define CARD_NAME "Miditerminal 4140" #define DRIVER_NAME "MTS64" #define PLATFORM_DRIVER "snd_mts64" static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; static struct platform_device *platform_devices[SNDRV_CARDS]; static int device_count; module_param_array(index, int, NULL, 0444); MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard."); module_param_array(id, charp, NULL, 0444); MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard."); module_param_array(enable, bool, NULL, 0444); MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard."); MODULE_AUTHOR("Matthias Koenig <mk@phasorlab.de>"); MODULE_DESCRIPTION("ESI Miditerminal 4140"); MODULE_LICENSE("GPL"); /********************************************************************* * Chip specific *********************************************************************/ #define MTS64_NUM_INPUT_PORTS 5 #define MTS64_NUM_OUTPUT_PORTS 4 #define MTS64_SMPTE_SUBSTREAM 4 struct mts64 { spinlock_t lock; struct snd_card *card; struct snd_rawmidi *rmidi; struct pardevice *pardev; int open_count; int current_midi_output_port; int current_midi_input_port; u8 mode[MTS64_NUM_INPUT_PORTS]; struct snd_rawmidi_substream *midi_input_substream[MTS64_NUM_INPUT_PORTS]; int smpte_switch; u8 time[4]; /* [0]=hh, [1]=mm, [2]=ss, [3]=ff */ u8 fps; }; static int snd_mts64_free(struct mts64 *mts) { kfree(mts); return 0; } static int snd_mts64_create(struct snd_card *card, struct pardevice *pardev, struct mts64 **rchip) { struct mts64 *mts; *rchip = NULL; mts = kzalloc(sizeof(struct mts64), GFP_KERNEL); if (mts == NULL) return -ENOMEM; /* Init chip specific data */ spin_lock_init(&mts->lock); mts->card = card; mts->pardev = pardev; mts->current_midi_output_port = -1; mts->current_midi_input_port = -1; *rchip = mts; return 0; } /********************************************************************* * HW register related constants *********************************************************************/ /* Status Bits */ #define MTS64_STAT_BSY 0x80 #define MTS64_STAT_BIT_SET 0x20 /* readout process, bit is set */ #define MTS64_STAT_PORT 0x10 /* read byte is a port number */ /* Control Bits */ #define MTS64_CTL_READOUT 0x08 /* enable readout */ #define MTS64_CTL_WRITE_CMD 0x06 #define MTS64_CTL_WRITE_DATA 0x02 #define MTS64_CTL_STROBE 0x01 /* Command */ #define MTS64_CMD_RESET 0xfe #define MTS64_CMD_PROBE 0x8f /* Used in probing procedure */ #define MTS64_CMD_SMPTE_SET_TIME 0xe8 #define MTS64_CMD_SMPTE_SET_FPS 0xee #define MTS64_CMD_SMPTE_STOP 0xef #define MTS64_CMD_SMPTE_FPS_24 0xe3 #define MTS64_CMD_SMPTE_FPS_25 0xe2 #define MTS64_CMD_SMPTE_FPS_2997 0xe4 #define MTS64_CMD_SMPTE_FPS_30D 0xe1 #define MTS64_CMD_SMPTE_FPS_30 0xe0 #define MTS64_CMD_COM_OPEN 0xf8 /* setting the communication mode */ #define MTS64_CMD_COM_CLOSE1 0xff /* clearing communication mode */ #define MTS64_CMD_COM_CLOSE2 0xf5 /********************************************************************* * Hardware specific functions *********************************************************************/ static void mts64_enable_readout(struct parport *p); static void mts64_disable_readout(struct parport *p); static int mts64_device_ready(struct parport *p); static int mts64_device_init(struct parport *p); static int mts64_device_open(struct mts64 *mts); static int mts64_device_close(struct mts64 *mts); static u8 mts64_map_midi_input(u8 c); static int mts64_probe(struct parport *p); static u16 mts64_read(struct parport *p); static u8 mts64_read_char(struct parport *p); static void mts64_smpte_start(struct parport *p, u8 hours, u8 minutes, u8 seconds, u8 frames, u8 idx); static void mts64_smpte_stop(struct parport *p); static void mts64_write_command(struct parport *p, u8 c); static void mts64_write_data(struct parport *p, u8 c); static void mts64_write_midi(struct mts64 *mts, u8 c, int midiport); /* Enables the readout procedure * * Before we can read a midi byte from the device, we have to set * bit 3 of control port. */ static void mts64_enable_readout(struct parport *p) { u8 c; c = parport_read_control(p); c |= MTS64_CTL_READOUT; parport_write_control(p, c); } /* Disables readout * * Readout is disabled by clearing bit 3 of control */ static void mts64_disable_readout(struct parport *p) { u8 c; c = parport_read_control(p); c &= ~MTS64_CTL_READOUT; parport_write_control(p, c); } /* waits for device ready * * Checks if BUSY (Bit 7 of status) is clear * 1 device ready * 0 failure */ static int mts64_device_ready(struct parport *p) { int i; u8 c; for (i = 0; i < 0xffff; ++i) { c = parport_read_status(p); c &= MTS64_STAT_BSY; if (c != 0) return 1; } return 0; } /* Init device (LED blinking startup magic) * * Returns: * 0 init ok * -EIO failure */ static int mts64_device_init(struct parport *p) { int i; mts64_write_command(p, MTS64_CMD_RESET); for (i = 0; i < 64; ++i) { msleep(100); if (mts64_probe(p) == 0) { /* success */ mts64_disable_readout(p); return 0; } } mts64_disable_readout(p); return -EIO; } /* * Opens the device (set communication mode) */ static int mts64_device_open(struct mts64 *mts) { int i; struct parport *p = mts->pardev->port; for (i = 0; i < 5; ++i) mts64_write_command(p, MTS64_CMD_COM_OPEN); return 0; } /* * Close device (clear communication mode) */ static int mts64_device_close(struct mts64 *mts) { int i; struct parport *p = mts->pardev->port; for (i = 0; i < 5; ++i) { mts64_write_command(p, MTS64_CMD_COM_CLOSE1); mts64_write_command(p, MTS64_CMD_COM_CLOSE2); } return 0; } /* map hardware port to substream number * * When reading a byte from the device, the device tells us * on what port the byte is. This HW port has to be mapped to * the midiport (substream number). * substream 0-3 are Midiports 1-4 * substream 4 is SMPTE Timecode * The mapping is done by the table: * HW | 0 | 1 | 2 | 3 | 4 * SW | 0 | 1 | 4 | 2 | 3 */ static u8 mts64_map_midi_input(u8 c) { static const u8 map[] = { 0, 1, 4, 2, 3 }; return map[c]; } /* Probe parport for device * * Do we have a Miditerminal 4140 on parport? * Returns: * 0 device found * -ENODEV no device */ static int mts64_probe(struct parport *p) { u8 c; mts64_smpte_stop(p); mts64_write_command(p, MTS64_CMD_PROBE); msleep(50); c = mts64_read(p); c &= 0x00ff; if (c != MTS64_CMD_PROBE) return -ENODEV; else return 0; } /* Read byte incl. status from device * * Returns: * data in lower 8 bits and status in upper 8 bits */ static u16 mts64_read(struct parport *p) { u8 data, status; mts64_device_ready(p); mts64_enable_readout(p); status = parport_read_status(p); data = mts64_read_char(p); mts64_disable_readout(p); return (status << 8) | data; } /* Read a byte from device * * Note, that readout mode has to be enabled. * readout procedure is as follows: * - Write number of the Bit to read to DATA * - Read STATUS * - Bit 5 of STATUS indicates if Bit is set * * Returns: * Byte read from device */ static u8 mts64_read_char(struct parport *p) { u8 c = 0; u8 status; u8 i; for (i = 0; i < 8; ++i) { parport_write_data(p, i); c >>= 1; status = parport_read_status(p); if (status & MTS64_STAT_BIT_SET) c |= 0x80; } return c; } /* Starts SMPTE Timecode generation * * The device creates SMPTE Timecode by hardware. * 0 24 fps * 1 25 fps * 2 29.97 fps * 3 30 fps (Drop-frame) * 4 30 fps */ static void mts64_smpte_start(struct parport *p, u8 hours, u8 minutes, u8 seconds, u8 frames, u8 idx) { static const u8 fps[5] = { MTS64_CMD_SMPTE_FPS_24, MTS64_CMD_SMPTE_FPS_25, MTS64_CMD_SMPTE_FPS_2997, MTS64_CMD_SMPTE_FPS_30D, MTS64_CMD_SMPTE_FPS_30 }; mts64_write_command(p, MTS64_CMD_SMPTE_SET_TIME); mts64_write_command(p, frames); mts64_write_command(p, seconds); mts64_write_command(p, minutes); mts64_write_command(p, hours); mts64_write_command(p, MTS64_CMD_SMPTE_SET_FPS); mts64_write_command(p, fps[idx]); } /* Stops SMPTE Timecode generation */ static void mts64_smpte_stop(struct parport *p) { mts64_write_command(p, MTS64_CMD_SMPTE_STOP); } /* Write a command byte to device */ static void mts64_write_command(struct parport *p, u8 c) { mts64_device_ready(p); parport_write_data(p, c); parport_write_control(p, MTS64_CTL_WRITE_CMD); parport_write_control(p, MTS64_CTL_WRITE_CMD | MTS64_CTL_STROBE); parport_write_control(p, MTS64_CTL_WRITE_CMD); } /* Write a data byte to device */ static void mts64_write_data(struct parport *p, u8 c) { mts64_device_ready(p); parport_write_data(p, c); parport_write_control(p, MTS64_CTL_WRITE_DATA); parport_write_control(p, MTS64_CTL_WRITE_DATA | MTS64_CTL_STROBE); parport_write_control(p, MTS64_CTL_WRITE_DATA); } /* Write a MIDI byte to midiport * * midiport ranges from 0-3 and maps to Ports 1-4 * assumptions: communication mode is on */ static void mts64_write_midi(struct mts64 *mts, u8 c, int midiport) { struct parport *p = mts->pardev->port; /* check current midiport */ if (mts->current_midi_output_port != midiport) mts64_write_command(p, midiport); /* write midi byte */ mts64_write_data(p, c); } /********************************************************************* * Control elements *********************************************************************/ /* SMPTE Switch */ #define snd_mts64_ctl_smpte_switch_info snd_ctl_boolean_mono_info static int snd_mts64_ctl_smpte_switch_get(struct snd_kcontrol* kctl, struct snd_ctl_elem_value *uctl) { struct mts64 *mts = snd_kcontrol_chip(kctl); spin_lock_irq(&mts->lock); uctl->value.integer.value[0] = mts->smpte_switch; spin_unlock_irq(&mts->lock); return 0; } /* smpte_switch is not accessed from IRQ handler, so we just need to protect the HW access */ static int snd_mts64_ctl_smpte_switch_put(struct snd_kcontrol* kctl, struct snd_ctl_elem_value *uctl) { struct mts64 *mts = snd_kcontrol_chip(kctl); int changed = 0; int val = !!uctl->value.integer.value[0]; spin_lock_irq(&mts->lock); if (mts->smpte_switch == val) goto __out; changed = 1; mts->smpte_switch = val; if (mts->smpte_switch) { mts64_smpte_start(mts->pardev->port, mts->time[0], mts->time[1], mts->time[2], mts->time[3], mts->fps); } else { mts64_smpte_stop(mts->pardev->port); } __out: spin_unlock_irq(&mts->lock); return changed; } static const struct snd_kcontrol_new mts64_ctl_smpte_switch = { .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI, .name = "SMPTE Playback Switch", .index = 0, .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, .private_value = 0, .info = snd_mts64_ctl_smpte_switch_info, .get = snd_mts64_ctl_smpte_switch_get, .put = snd_mts64_ctl_smpte_switch_put }; /* Time */ static int snd_mts64_ctl_smpte_time_h_info(struct snd_kcontrol *kctl, struct snd_ctl_elem_info *uinfo) { uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; uinfo->count = 1; uinfo->value.integer.min = 0; uinfo->value.integer.max = 23; return 0; } static int snd_mts64_ctl_smpte_time_f_info(struct snd_kcontrol *kctl, struct snd_ctl_elem_info *uinfo) { uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; uinfo->count = 1; uinfo->value.integer.min = 0; uinfo->value.integer.max = 99; return 0; } static int snd_mts64_ctl_smpte_time_info(struct snd_kcontrol *kctl, struct snd_ctl_elem_info *uinfo) { uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; uinfo->count = 1; uinfo->value.integer.min = 0; uinfo->value.integer.max = 59; return 0; } static int snd_mts64_ctl_smpte_time_get(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *uctl) { struct mts64 *mts = snd_kcontrol_chip(kctl); int idx = kctl->private_value; spin_lock_irq(&mts->lock); uctl->value.integer.value[0] = mts->time[idx]; spin_unlock_irq(&mts->lock); return 0; } static int snd_mts64_ctl_smpte_time_put(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *uctl) { struct mts64 *mts = snd_kcontrol_chip(kctl); int idx = kctl->private_value; unsigned int time = uctl->value.integer.value[0] % 60; int changed = 0; spin_lock_irq(&mts->lock); if (mts->time[idx] != time) { changed = 1; mts->time[idx] = time; } spin_unlock_irq(&mts->lock); return changed; } static const struct snd_kcontrol_new mts64_ctl_smpte_time_hours = { .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI, .name = "SMPTE Time Hours", .index = 0, .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, .private_value = 0, .info = snd_mts64_ctl_smpte_time_h_info, .get = snd_mts64_ctl_smpte_time_get, .put = snd_mts64_ctl_smpte_time_put }; static const struct snd_kcontrol_new mts64_ctl_smpte_time_minutes = { .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI, .name = "SMPTE Time Minutes", .index = 0, .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, .private_value = 1, .info = snd_mts64_ctl_smpte_time_info, .get = snd_mts64_ctl_smpte_time_get, .put = snd_mts64_ctl_smpte_time_put }; static const struct snd_kcontrol_new mts64_ctl_smpte_time_seconds = { .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI, .name = "SMPTE Time Seconds", .index = 0, .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, .private_value = 2, .info = snd_mts64_ctl_smpte_time_info, .get = snd_mts64_ctl_smpte_time_get, .put = snd_mts64_ctl_smpte_time_put }; static const struct snd_kcontrol_new mts64_ctl_smpte_time_frames = { .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI, .name = "SMPTE Time Frames", .index = 0, .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, .private_value = 3, .info = snd_mts64_ctl_smpte_time_f_info, .get = snd_mts64_ctl_smpte_time_get, .put = snd_mts64_ctl_smpte_time_put }; /* FPS */ static int snd_mts64_ctl_smpte_fps_info(struct snd_kcontrol *kctl, struct snd_ctl_elem_info *uinfo) { static const char * const texts[5] = { "24", "25", "29.97", "30D", "30" }; return snd_ctl_enum_info(uinfo, 1, 5, texts); } static int snd_mts64_ctl_smpte_fps_get(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *uctl) { struct mts64 *mts = snd_kcontrol_chip(kctl); spin_lock_irq(&mts->lock); uctl->value.enumerated.item[0] = mts->fps; spin_unlock_irq(&mts->lock); return 0; } static int snd_mts64_ctl_smpte_fps_put(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *uctl) { struct mts64 *mts = snd_kcontrol_chip(kctl); int changed = 0; if (uctl->value.enumerated.item[0] >= 5) return -EINVAL; spin_lock_irq(&mts->lock); if (mts->fps != uctl->value.enumerated.item[0]) { changed = 1; mts->fps = uctl->value.enumerated.item[0]; } spin_unlock_irq(&mts->lock); return changed; } static const struct snd_kcontrol_new mts64_ctl_smpte_fps = { .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI, .name = "SMPTE Fps", .index = 0, .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, .private_value = 0, .info = snd_mts64_ctl_smpte_fps_info, .get = snd_mts64_ctl_smpte_fps_get, .put = snd_mts64_ctl_smpte_fps_put }; static int snd_mts64_ctl_create(struct snd_card *card, struct mts64 *mts) { int err, i; static const struct snd_kcontrol_new *control[] = { &mts64_ctl_smpte_switch, &mts64_ctl_smpte_time_hours, &mts64_ctl_smpte_time_minutes, &mts64_ctl_smpte_time_seconds, &mts64_ctl_smpte_time_frames, &mts64_ctl_smpte_fps, NULL }; for (i = 0; control[i]; ++i) { err = snd_ctl_add(card, snd_ctl_new1(control[i], mts)); if (err < 0) { snd_printd("Cannot create control: %s\n", control[i]->name); return err; } } return 0; } /********************************************************************* * Rawmidi *********************************************************************/ #define MTS64_MODE_INPUT_TRIGGERED 0x01 static int snd_mts64_rawmidi_open(struct snd_rawmidi_substream *substream) { struct mts64 *mts = substream->rmidi->private_data; if (mts->open_count == 0) { /* We don't need a spinlock here, because this is just called if the device has not been opened before. So there aren't any IRQs from the device */ mts64_device_open(mts); msleep(50); } ++(mts->open_count); return 0; } static int snd_mts64_rawmidi_close(struct snd_rawmidi_substream *substream) { struct mts64 *mts = substream->rmidi->private_data; unsigned long flags; --(mts->open_count); if (mts->open_count == 0) { /* We need the spinlock_irqsave here because we can still have IRQs at this point */ spin_lock_irqsave(&mts->lock, flags); mts64_device_close(mts); spin_unlock_irqrestore(&mts->lock, flags); msleep(500); } else if (mts->open_count < 0) mts->open_count = 0; return 0; } static void snd_mts64_rawmidi_output_trigger(struct snd_rawmidi_substream *substream, int up) { struct mts64 *mts = substream->rmidi->private_data; u8 data; unsigned long flags; spin_lock_irqsave(&mts->lock, flags); while (snd_rawmidi_transmit_peek(substream, &data, 1) == 1) { mts64_write_midi(mts, data, substream->number+1); snd_rawmidi_transmit_ack(substream, 1); } spin_unlock_irqrestore(&mts->lock, flags); } static void snd_mts64_rawmidi_input_trigger(struct snd_rawmidi_substream *substream, int up) { struct mts64 *mts = substream->rmidi->private_data; unsigned long flags; spin_lock_irqsave(&mts->lock, flags); if (up) mts->mode[substream->number] |= MTS64_MODE_INPUT_TRIGGERED; else mts->mode[substream->number] &= ~MTS64_MODE_INPUT_TRIGGERED; spin_unlock_irqrestore(&mts->lock, flags); } static const struct snd_rawmidi_ops snd_mts64_rawmidi_output_ops = { .open = snd_mts64_rawmidi_open, .close = snd_mts64_rawmidi_close, .trigger = snd_mts64_rawmidi_output_trigger }; static const struct snd_rawmidi_ops snd_mts64_rawmidi_input_ops = { .open = snd_mts64_rawmidi_open, .close = snd_mts64_rawmidi_close, .trigger = snd_mts64_rawmidi_input_trigger }; /* Create and initialize the rawmidi component */ static int snd_mts64_rawmidi_create(struct snd_card *card) { struct mts64 *mts = card->private_data; struct snd_rawmidi *rmidi; struct snd_rawmidi_substream *substream; struct list_head *list; int err; err = snd_rawmidi_new(card, CARD_NAME, 0, MTS64_NUM_OUTPUT_PORTS, MTS64_NUM_INPUT_PORTS, &rmidi); if (err < 0) return err; rmidi->private_data = mts; strcpy(rmidi->name, CARD_NAME); rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT | SNDRV_RAWMIDI_INFO_DUPLEX; mts->rmidi = rmidi; /* register rawmidi ops */ snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_mts64_rawmidi_output_ops); snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_mts64_rawmidi_input_ops); /* name substreams */ /* output */ list_for_each(list, &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) { substream = list_entry(list, struct snd_rawmidi_substream, list); sprintf(substream->name, "Miditerminal %d", substream->number+1); } /* input */ list_for_each(list, &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) { substream = list_entry(list, struct snd_rawmidi_substream, list); mts->midi_input_substream[substream->number] = substream; switch(substream->number) { case MTS64_SMPTE_SUBSTREAM: strcpy(substream->name, "Miditerminal SMPTE"); break; default: sprintf(substream->name, "Miditerminal %d", substream->number+1); } } /* controls */ err = snd_mts64_ctl_create(card, mts); return err; } /********************************************************************* * parport stuff *********************************************************************/ static void snd_mts64_interrupt(void *private) { struct mts64 *mts = ((struct snd_card*)private)->private_data; u16 ret; u8 status, data; struct snd_rawmidi_substream *substream; if (!mts) return; spin_lock(&mts->lock); ret = mts64_read(mts->pardev->port); data = ret & 0x00ff; status = ret >> 8; if (status & MTS64_STAT_PORT) { mts->current_midi_input_port = mts64_map_midi_input(data); } else { if (mts->current_midi_input_port == -1) goto __out; substream = mts->midi_input_substream[mts->current_midi_input_port]; if (mts->mode[substream->number] & MTS64_MODE_INPUT_TRIGGERED) snd_rawmidi_receive(substream, &data, 1); } __out: spin_unlock(&mts->lock); } static void snd_mts64_attach(struct parport *p) { struct platform_device *device; device = platform_device_alloc(PLATFORM_DRIVER, device_count); if (!device) return; /* Temporary assignment to forward the parport */ platform_set_drvdata(device, p); if (platform_device_add(device) < 0) { platform_device_put(device); return; } /* Since we dont get the return value of probe * We need to check if device probing succeeded or not */ if (!platform_get_drvdata(device)) { platform_device_unregister(device); return; } /* register device in global table */ platform_devices[device_count] = device; device_count++; } static void snd_mts64_detach(struct parport *p) { /* nothing to do here */ } static int snd_mts64_dev_probe(struct pardevice *pardev) { if (strcmp(pardev->name, DRIVER_NAME)) return -ENODEV; return 0; } static struct parport_driver mts64_parport_driver = { .name = "mts64", .probe = snd_mts64_dev_probe, .match_port = snd_mts64_attach, .detach = snd_mts64_detach, .devmodel = true, }; /********************************************************************* * platform stuff *********************************************************************/ static void snd_mts64_card_private_free(struct snd_card *card) { struct mts64 *mts = card->private_data; struct pardevice *pardev = mts->pardev; if (pardev) { parport_release(pardev); parport_unregister_device(pardev); } snd_mts64_free(mts); } static int snd_mts64_probe(struct platform_device *pdev) { struct pardevice *pardev; struct parport *p; int dev = pdev->id; struct snd_card *card = NULL; struct mts64 *mts = NULL; int err; struct pardev_cb mts64_cb = { .preempt = NULL, .wakeup = NULL, .irq_func = snd_mts64_interrupt, /* ISR */ .flags = PARPORT_DEV_EXCL, /* flags */ }; p = platform_get_drvdata(pdev); platform_set_drvdata(pdev, NULL); if (dev >= SNDRV_CARDS) return -ENODEV; if (!enable[dev]) return -ENOENT; err = snd_card_new(&pdev->dev, index[dev], id[dev], THIS_MODULE, 0, &card); if (err < 0) { snd_printd("Cannot create card\n"); return err; } strcpy(card->driver, DRIVER_NAME); strcpy(card->shortname, "ESI " CARD_NAME); sprintf(card->longname, "%s at 0x%lx, irq %i", card->shortname, p->base, p->irq); mts64_cb.private = card; /* private */ pardev = parport_register_dev_model(p, /* port */ DRIVER_NAME, /* name */ &mts64_cb, /* callbacks */ pdev->id); /* device number */ if (!pardev) { snd_printd("Cannot register pardevice\n"); err = -EIO; goto __err; } /* claim parport */ if (parport_claim(pardev)) { snd_printd("Cannot claim parport 0x%lx\n", pardev->port->base); err = -EIO; goto free_pardev; } err = snd_mts64_create(card, pardev, &mts); if (err < 0) { snd_printd("Cannot create main component\n"); goto release_pardev; } card->private_data = mts; card->private_free = snd_mts64_card_private_free; err = mts64_probe(p); if (err) { err = -EIO; goto __err; } err = snd_mts64_rawmidi_create(card); if (err < 0) { snd_printd("Creating Rawmidi component failed\n"); goto __err; } /* init device */ err = mts64_device_init(p); if (err < 0) goto __err; platform_set_drvdata(pdev, card); /* At this point card will be usable */ err = snd_card_register(card); if (err < 0) { snd_printd("Cannot register card\n"); goto __err; } snd_printk(KERN_INFO "ESI Miditerminal 4140 on 0x%lx\n", p->base); return 0; release_pardev: parport_release(pardev); free_pardev: parport_unregister_device(pardev); __err: snd_card_free(card); return err; } static void snd_mts64_remove(struct platform_device *pdev) { struct snd_card *card = platform_get_drvdata(pdev); if (card) snd_card_free(card); } static struct platform_driver snd_mts64_driver = { .probe = snd_mts64_probe, .remove_new = snd_mts64_remove, .driver = { .name = PLATFORM_DRIVER, } }; /********************************************************************* * module init stuff *********************************************************************/ static void snd_mts64_unregister_all(void) { int i; for (i = 0; i < SNDRV_CARDS; ++i) { if (platform_devices[i]) { platform_device_unregister(platform_devices[i]); platform_devices[i] = NULL; } } platform_driver_unregister(&snd_mts64_driver); parport_unregister_driver(&mts64_parport_driver); } static int __init snd_mts64_module_init(void) { int err; err = platform_driver_register(&snd_mts64_driver); if (err < 0) return err; if (parport_register_driver(&mts64_parport_driver) != 0) { platform_driver_unregister(&snd_mts64_driver); return -EIO; } if (device_count == 0) { snd_mts64_unregister_all(); return -ENODEV; } return 0; } static void __exit snd_mts64_module_exit(void) { snd_mts64_unregister_all(); } module_init(snd_mts64_module_init); module_exit(snd_mts64_module_exit);
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