--- /dev/null
+/*
+ * ALSA Driver for Ego Systems Inc. (ESI) Miditerminal 4140
+ * Copyright (c) 2006 by Matthias König <mk@phasorlab.de>
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#include <sound/driver.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/parport.h>
+#include <linux/spinlock.h>
+#include <linux/delay.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 int 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, S_IRUGO);
+MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
+module_param_array(id, charp, NULL, S_IRUGO);
+MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
+module_param_array(enable, bool, NULL, S_IRUGO);
+MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
+
+MODULE_AUTHOR("Matthias Koenig <mk@phasorlab.de>");
+MODULE_DESCRIPTION("ESI Miditerminal 4140");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{ESI,Miditerminal 4140}}");
+
+/*********************************************************************
+ * 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 pardev_claimed;
+
+ 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 __devinit 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 __devinit 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 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 __devinit 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 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 */
+static int snd_mts64_ctl_smpte_switch_info(struct snd_kcontrol *kctl,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = 1;
+ return 0;
+}
+
+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;
+
+ spin_lock_irq(&mts->lock);
+ if (mts->smpte_switch == uctl->value.integer.value[0])
+ goto __out;
+
+ changed = 1;
+ mts->smpte_switch = uctl->value.integer.value[0];
+ 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 struct snd_kcontrol_new mts64_ctl_smpte_switch __devinitdata = {
+ .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;
+ int changed = 0;
+
+ spin_lock_irq(&mts->lock);
+ if (mts->time[idx] != uctl->value.integer.value[0]) {
+ changed = 1;
+ mts->time[idx] = uctl->value.integer.value[0];
+ }
+ spin_unlock_irq(&mts->lock);
+
+ return changed;
+}
+
+static struct snd_kcontrol_new mts64_ctl_smpte_time_hours __devinitdata = {
+ .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 struct snd_kcontrol_new mts64_ctl_smpte_time_minutes __devinitdata = {
+ .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 struct snd_kcontrol_new mts64_ctl_smpte_time_seconds __devinitdata = {
+ .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 struct snd_kcontrol_new mts64_ctl_smpte_time_frames __devinitdata = {
+ .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 char *texts[5] = { "24",
+ "25",
+ "29.97",
+ "30D",
+ "30" };
+
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+ uinfo->count = 1;
+ uinfo->value.enumerated.items = 5;
+ if (uinfo->value.enumerated.item > 4)
+ uinfo->value.enumerated.item = 4;
+ strcpy(uinfo->value.enumerated.name,
+ texts[uinfo->value.enumerated.item]);
+
+ return 0;
+}
+
+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;
+
+ 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 struct snd_kcontrol_new mts64_ctl_smpte_fps __devinitdata = {
+ .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 __devinit snd_mts64_ctl_create(struct snd_card *card,
+ struct mts64 *mts)
+{
+ int err, i;
+ static 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,
+ 0 };
+
+ 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 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 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 __devinit 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(int irq, void *private, struct pt_regs *r)
+{
+ struct mts64 *mts = ((struct snd_card*)private)->private_data;
+ u16 ret;
+ u8 status, data;
+ struct snd_rawmidi_substream *substream;
+
+ 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 int __devinit snd_mts64_probe_port(struct parport *p)
+{
+ struct pardevice *pardev;
+ int res;
+
+ pardev = parport_register_device(p, DRIVER_NAME,
+ NULL, NULL, NULL,
+ 0, NULL);
+ if (!pardev)
+ return -EIO;
+
+ if (parport_claim(pardev)) {
+ parport_unregister_device(pardev);
+ return -EIO;
+ }
+
+ res = mts64_probe(p);
+
+ parport_release(pardev);
+ parport_unregister_device(pardev);
+
+ return res;
+}
+
+static void __devinit 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_register(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 struct parport_driver mts64_parport_driver = {
+ .name = "mts64",
+ .attach = snd_mts64_attach,
+ .detach = snd_mts64_detach
+};
+
+/*********************************************************************
+ * 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) {
+ if (mts->pardev_claimed)
+ parport_release(pardev);
+ parport_unregister_device(pardev);
+ }
+
+ snd_mts64_free(mts);
+}
+
+static int __devinit 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;
+
+ p = platform_get_drvdata(pdev);
+ platform_set_drvdata(pdev, NULL);
+
+ if (dev >= SNDRV_CARDS)
+ return -ENODEV;
+ if (!enable[dev])
+ return -ENOENT;
+ if ((err = snd_mts64_probe_port(p)) < 0)
+ return err;
+
+ card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
+ if (card == NULL) {
+ snd_printd("Cannot create card\n");
+ return -ENOMEM;
+ }
+ 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);
+
+ pardev = parport_register_device(p, /* port */
+ DRIVER_NAME, /* name */
+ NULL, /* preempt */
+ NULL, /* wakeup */
+ snd_mts64_interrupt, /* ISR */
+ PARPORT_DEV_EXCL, /* flags */
+ (void *)card); /* private */
+ if (pardev == NULL) {
+ snd_printd("Cannot register pardevice\n");
+ err = -EIO;
+ goto __err;
+ }
+
+ if ((err = snd_mts64_create(card, pardev, &mts)) < 0) {
+ snd_printd("Cannot create main component\n");
+ parport_unregister_device(pardev);
+ goto __err;
+ }
+ card->private_data = mts;
+ card->private_free = snd_mts64_card_private_free;
+
+ if ((err = snd_mts64_rawmidi_create(card)) < 0) {
+ snd_printd("Creating Rawmidi component failed\n");
+ goto __err;
+ }
+
+ /* claim parport */
+ if (parport_claim(pardev)) {
+ snd_printd("Cannot claim parport 0x%lx\n", pardev->port->base);
+ err = -EIO;
+ goto __err;
+ }
+ mts->pardev_claimed = 1;
+
+ /* init device */
+ if ((err = mts64_device_init(p)) < 0)
+ goto __err;
+
+ platform_set_drvdata(pdev, card);
+
+ /* At this point card will be usable */
+ if ((err = snd_card_register(card)) < 0) {
+ snd_printd("Cannot register card\n");
+ goto __err;
+ }
+
+ snd_printk("ESI Miditerminal 4140 on 0x%lx\n", p->base);
+ return 0;
+
+__err:
+ snd_card_free(card);
+ return err;
+}
+
+static int snd_mts64_remove(struct platform_device *pdev)
+{
+ struct snd_card *card = platform_get_drvdata(pdev);
+
+ if (card)
+ snd_card_free(card);
+
+ return 0;
+}
+
+
+static struct platform_driver snd_mts64_driver = {
+ .probe = snd_mts64_probe,
+ .remove = 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;
+
+ if ((err = platform_driver_register(&snd_mts64_driver)) < 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);
projects / openwrt / staging / blogic.git / commitdiff