Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/sound/oss/mpu401.c b/sound/oss/mpu401.c
new file mode 100644
index 0000000..b66f53f
--- /dev/null
+++ b/sound/oss/mpu401.c
@@ -0,0 +1,1826 @@
+/*
+ * sound/mpu401.c
+ *
+ * The low level driver for Roland MPU-401 compatible Midi cards.
+ */
+/*
+ * Copyright (C) by Hannu Savolainen 1993-1997
+ *
+ * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
+ * Version 2 (June 1991). See the "COPYING" file distributed with this software
+ * for more info.
+ *
+ *
+ * Thomas Sailer ioctl code reworked (vmalloc/vfree removed)
+ * Alan Cox modularisation, use normal request_irq, use dev_id
+ * Bartlomiej Zolnierkiewicz removed some __init to allow using many drivers
+ * Chris Rankin Update the module-usage counter for the coprocessor
+ * Zwane Mwaikambo Changed attach/unload resource freeing
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#define USE_SEQ_MACROS
+#define USE_SIMPLE_MACROS
+
+#include "sound_config.h"
+
+#include "coproc.h"
+#include "mpu401.h"
+
+static int timer_mode = TMR_INTERNAL, timer_caps = TMR_INTERNAL;
+
+struct mpu_config
+{
+ int base; /*
+ * I/O base
+ */
+ int irq;
+ int opened; /*
+ * Open mode
+ */
+ int devno;
+ int synthno;
+ int uart_mode;
+ int initialized;
+ int mode;
+#define MODE_MIDI 1
+#define MODE_SYNTH 2
+ unsigned char version, revision;
+ unsigned int capabilities;
+#define MPU_CAP_INTLG 0x10000000
+#define MPU_CAP_SYNC 0x00000010
+#define MPU_CAP_FSK 0x00000020
+#define MPU_CAP_CLS 0x00000040
+#define MPU_CAP_SMPTE 0x00000080
+#define MPU_CAP_2PORT 0x00000001
+ int timer_flag;
+
+#define MBUF_MAX 10
+#define BUFTEST(dc) if (dc->m_ptr >= MBUF_MAX || dc->m_ptr < 0) \
+ {printk( "MPU: Invalid buffer pointer %d/%d, s=%d\n", dc->m_ptr, dc->m_left, dc->m_state);dc->m_ptr--;}
+ int m_busy;
+ unsigned char m_buf[MBUF_MAX];
+ int m_ptr;
+ int m_state;
+ int m_left;
+ unsigned char last_status;
+ void (*inputintr) (int dev, unsigned char data);
+ int shared_irq;
+ int *osp;
+ spinlock_t lock;
+ };
+
+#define DATAPORT(base) (base)
+#define COMDPORT(base) (base+1)
+#define STATPORT(base) (base+1)
+
+
+static void mpu401_close(int dev);
+
+static inline int mpu401_status(struct mpu_config *devc)
+{
+ return inb(STATPORT(devc->base));
+}
+
+#define input_avail(devc) (!(mpu401_status(devc)&INPUT_AVAIL))
+#define output_ready(devc) (!(mpu401_status(devc)&OUTPUT_READY))
+
+static inline void write_command(struct mpu_config *devc, unsigned char cmd)
+{
+ outb(cmd, COMDPORT(devc->base));
+}
+
+static inline int read_data(struct mpu_config *devc)
+{
+ return inb(DATAPORT(devc->base));
+}
+
+static inline void write_data(struct mpu_config *devc, unsigned char byte)
+{
+ outb(byte, DATAPORT(devc->base));
+}
+
+#define OUTPUT_READY 0x40
+#define INPUT_AVAIL 0x80
+#define MPU_ACK 0xFE
+#define MPU_RESET 0xFF
+#define UART_MODE_ON 0x3F
+
+static struct mpu_config dev_conf[MAX_MIDI_DEV];
+
+static int n_mpu_devs;
+
+static int reset_mpu401(struct mpu_config *devc);
+static void set_uart_mode(int dev, struct mpu_config *devc, int arg);
+
+static int mpu_timer_init(int midi_dev);
+static void mpu_timer_interrupt(void);
+static void timer_ext_event(struct mpu_config *devc, int event, int parm);
+
+static struct synth_info mpu_synth_info_proto = {
+ "MPU-401 MIDI interface",
+ 0,
+ SYNTH_TYPE_MIDI,
+ MIDI_TYPE_MPU401,
+ 0, 128,
+ 0, 128,
+ SYNTH_CAP_INPUT
+};
+
+static struct synth_info mpu_synth_info[MAX_MIDI_DEV];
+
+/*
+ * States for the input scanner
+ */
+
+#define ST_INIT 0 /* Ready for timing byte or msg */
+#define ST_TIMED 1 /* Leading timing byte rcvd */
+#define ST_DATABYTE 2 /* Waiting for (nr_left) data bytes */
+
+#define ST_SYSMSG 100 /* System message (sysx etc). */
+#define ST_SYSEX 101 /* System exclusive msg */
+#define ST_MTC 102 /* Midi Time Code (MTC) qframe msg */
+#define ST_SONGSEL 103 /* Song select */
+#define ST_SONGPOS 104 /* Song position pointer */
+
+static unsigned char len_tab[] = /* # of data bytes following a status
+ */
+{
+ 2, /* 8x */
+ 2, /* 9x */
+ 2, /* Ax */
+ 2, /* Bx */
+ 1, /* Cx */
+ 1, /* Dx */
+ 2, /* Ex */
+ 0 /* Fx */
+};
+
+#define STORE(cmd) \
+{ \
+ int len; \
+ unsigned char obuf[8]; \
+ cmd; \
+ seq_input_event(obuf, len); \
+}
+
+#define _seqbuf obuf
+#define _seqbufptr 0
+#define _SEQ_ADVBUF(x) len=x
+
+static int mpu_input_scanner(struct mpu_config *devc, unsigned char midic)
+{
+
+ switch (devc->m_state)
+ {
+ case ST_INIT:
+ switch (midic)
+ {
+ case 0xf8:
+ /* Timer overflow */
+ break;
+
+ case 0xfc:
+ printk("<all end>");
+ break;
+
+ case 0xfd:
+ if (devc->timer_flag)
+ mpu_timer_interrupt();
+ break;
+
+ case 0xfe:
+ return MPU_ACK;
+
+ case 0xf0:
+ case 0xf1:
+ case 0xf2:
+ case 0xf3:
+ case 0xf4:
+ case 0xf5:
+ case 0xf6:
+ case 0xf7:
+ printk("<Trk data rq #%d>", midic & 0x0f);
+ break;
+
+ case 0xf9:
+ printk("<conductor rq>");
+ break;
+
+ case 0xff:
+ devc->m_state = ST_SYSMSG;
+ break;
+
+ default:
+ if (midic <= 0xef)
+ {
+ /* printk( "mpu time: %d ", midic); */
+ devc->m_state = ST_TIMED;
+ }
+ else
+ printk("<MPU: Unknown event %02x> ", midic);
+ }
+ break;
+
+ case ST_TIMED:
+ {
+ int msg = ((int) (midic & 0xf0) >> 4);
+
+ devc->m_state = ST_DATABYTE;
+
+ if (msg < 8) /* Data byte */
+ {
+ /* printk( "midi msg (running status) "); */
+ msg = ((int) (devc->last_status & 0xf0) >> 4);
+ msg -= 8;
+ devc->m_left = len_tab[msg] - 1;
+
+ devc->m_ptr = 2;
+ devc->m_buf[0] = devc->last_status;
+ devc->m_buf[1] = midic;
+
+ if (devc->m_left <= 0)
+ {
+ devc->m_state = ST_INIT;
+ do_midi_msg(devc->synthno, devc->m_buf, devc->m_ptr);
+ devc->m_ptr = 0;
+ }
+ }
+ else if (msg == 0xf) /* MPU MARK */
+ {
+ devc->m_state = ST_INIT;
+
+ switch (midic)
+ {
+ case 0xf8:
+ /* printk( "NOP "); */
+ break;
+
+ case 0xf9:
+ /* printk( "meas end "); */
+ break;
+
+ case 0xfc:
+ /* printk( "data end "); */
+ break;
+
+ default:
+ printk("Unknown MPU mark %02x\n", midic);
+ }
+ }
+ else
+ {
+ devc->last_status = midic;
+ /* printk( "midi msg "); */
+ msg -= 8;
+ devc->m_left = len_tab[msg];
+
+ devc->m_ptr = 1;
+ devc->m_buf[0] = midic;
+
+ if (devc->m_left <= 0)
+ {
+ devc->m_state = ST_INIT;
+ do_midi_msg(devc->synthno, devc->m_buf, devc->m_ptr);
+ devc->m_ptr = 0;
+ }
+ }
+ }
+ break;
+
+ case ST_SYSMSG:
+ switch (midic)
+ {
+ case 0xf0:
+ printk("<SYX>");
+ devc->m_state = ST_SYSEX;
+ break;
+
+ case 0xf1:
+ devc->m_state = ST_MTC;
+ break;
+
+ case 0xf2:
+ devc->m_state = ST_SONGPOS;
+ devc->m_ptr = 0;
+ break;
+
+ case 0xf3:
+ devc->m_state = ST_SONGSEL;
+ break;
+
+ case 0xf6:
+ /* printk( "tune_request\n"); */
+ devc->m_state = ST_INIT;
+
+ /*
+ * Real time messages
+ */
+ case 0xf8:
+ /* midi clock */
+ devc->m_state = ST_INIT;
+ timer_ext_event(devc, TMR_CLOCK, 0);
+ break;
+
+ case 0xfA:
+ devc->m_state = ST_INIT;
+ timer_ext_event(devc, TMR_START, 0);
+ break;
+
+ case 0xFB:
+ devc->m_state = ST_INIT;
+ timer_ext_event(devc, TMR_CONTINUE, 0);
+ break;
+
+ case 0xFC:
+ devc->m_state = ST_INIT;
+ timer_ext_event(devc, TMR_STOP, 0);
+ break;
+
+ case 0xFE:
+ /* active sensing */
+ devc->m_state = ST_INIT;
+ break;
+
+ case 0xff:
+ /* printk( "midi hard reset"); */
+ devc->m_state = ST_INIT;
+ break;
+
+ default:
+ printk("unknown MIDI sysmsg %0x\n", midic);
+ devc->m_state = ST_INIT;
+ }
+ break;
+
+ case ST_MTC:
+ devc->m_state = ST_INIT;
+ printk("MTC frame %x02\n", midic);
+ break;
+
+ case ST_SYSEX:
+ if (midic == 0xf7)
+ {
+ printk("<EOX>");
+ devc->m_state = ST_INIT;
+ }
+ else
+ printk("%02x ", midic);
+ break;
+
+ case ST_SONGPOS:
+ BUFTEST(devc);
+ devc->m_buf[devc->m_ptr++] = midic;
+ if (devc->m_ptr == 2)
+ {
+ devc->m_state = ST_INIT;
+ devc->m_ptr = 0;
+ timer_ext_event(devc, TMR_SPP,
+ ((devc->m_buf[1] & 0x7f) << 7) |
+ (devc->m_buf[0] & 0x7f));
+ }
+ break;
+
+ case ST_DATABYTE:
+ BUFTEST(devc);
+ devc->m_buf[devc->m_ptr++] = midic;
+ if ((--devc->m_left) <= 0)
+ {
+ devc->m_state = ST_INIT;
+ do_midi_msg(devc->synthno, devc->m_buf, devc->m_ptr);
+ devc->m_ptr = 0;
+ }
+ break;
+
+ default:
+ printk("Bad state %d ", devc->m_state);
+ devc->m_state = ST_INIT;
+ }
+ return 1;
+}
+
+static void mpu401_input_loop(struct mpu_config *devc)
+{
+ unsigned long flags;
+ int busy;
+ int n;
+
+ spin_lock_irqsave(&devc->lock,flags);
+ busy = devc->m_busy;
+ devc->m_busy = 1;
+ spin_unlock_irqrestore(&devc->lock,flags);
+
+ if (busy) /* Already inside the scanner */
+ return;
+
+ n = 50;
+
+ while (input_avail(devc) && n-- > 0)
+ {
+ unsigned char c = read_data(devc);
+
+ if (devc->mode == MODE_SYNTH)
+ {
+ mpu_input_scanner(devc, c);
+ }
+ else if (devc->opened & OPEN_READ && devc->inputintr != NULL)
+ devc->inputintr(devc->devno, c);
+ }
+ devc->m_busy = 0;
+}
+
+int intchk_mpu401(void *dev_id)
+{
+ struct mpu_config *devc;
+ int dev = (int) dev_id;
+
+ devc = &dev_conf[dev];
+ return input_avail(devc);
+}
+
+irqreturn_t mpuintr(int irq, void *dev_id, struct pt_regs *dummy)
+{
+ struct mpu_config *devc;
+ int dev = (int) dev_id;
+ int handled = 0;
+
+ devc = &dev_conf[dev];
+
+ if (input_avail(devc))
+ {
+ handled = 1;
+ if (devc->base != 0 && (devc->opened & OPEN_READ || devc->mode == MODE_SYNTH))
+ mpu401_input_loop(devc);
+ else
+ {
+ /* Dummy read (just to acknowledge the interrupt) */
+ read_data(devc);
+ }
+ }
+ return IRQ_RETVAL(handled);
+}
+
+static int mpu401_open(int dev, int mode,
+ void (*input) (int dev, unsigned char data),
+ void (*output) (int dev)
+)
+{
+ int err;
+ struct mpu_config *devc;
+ struct coproc_operations *coprocessor;
+
+ if (dev < 0 || dev >= num_midis || midi_devs[dev] == NULL)
+ return -ENXIO;
+
+ devc = &dev_conf[dev];
+
+ if (devc->opened)
+ return -EBUSY;
+ /*
+ * Verify that the device is really running.
+ * Some devices (such as Ensoniq SoundScape don't
+ * work before the on board processor (OBP) is initialized
+ * by downloading its microcode.
+ */
+
+ if (!devc->initialized)
+ {
+ if (mpu401_status(devc) == 0xff) /* Bus float */
+ {
+ printk(KERN_ERR "mpu401: Device not initialized properly\n");
+ return -EIO;
+ }
+ reset_mpu401(devc);
+ }
+
+ if ( (coprocessor = midi_devs[dev]->coproc) != NULL )
+ {
+ if (!try_module_get(coprocessor->owner)) {
+ mpu401_close(dev);
+ return -ENODEV;
+ }
+
+ if ((err = coprocessor->open(coprocessor->devc, COPR_MIDI)) < 0)
+ {
+ printk(KERN_WARNING "MPU-401: Can't access coprocessor device\n");
+ mpu401_close(dev);
+ return err;
+ }
+ }
+
+ set_uart_mode(dev, devc, 1);
+ devc->mode = MODE_MIDI;
+ devc->synthno = 0;
+
+ mpu401_input_loop(devc);
+
+ devc->inputintr = input;
+ devc->opened = mode;
+
+ return 0;
+}
+
+static void mpu401_close(int dev)
+{
+ struct mpu_config *devc;
+ struct coproc_operations *coprocessor;
+
+ devc = &dev_conf[dev];
+ if (devc->uart_mode)
+ reset_mpu401(devc); /*
+ * This disables the UART mode
+ */
+ devc->mode = 0;
+ devc->inputintr = NULL;
+
+ coprocessor = midi_devs[dev]->coproc;
+ if (coprocessor) {
+ coprocessor->close(coprocessor->devc, COPR_MIDI);
+ module_put(coprocessor->owner);
+ }
+ devc->opened = 0;
+}
+
+static int mpu401_out(int dev, unsigned char midi_byte)
+{
+ int timeout;
+ unsigned long flags;
+
+ struct mpu_config *devc;
+
+ devc = &dev_conf[dev];
+
+ /*
+ * Sometimes it takes about 30000 loops before the output becomes ready
+ * (After reset). Normally it takes just about 10 loops.
+ */
+
+ for (timeout = 30000; timeout > 0 && !output_ready(devc); timeout--);
+
+ spin_lock_irqsave(&devc->lock,flags);
+ if (!output_ready(devc))
+ {
+ printk(KERN_WARNING "mpu401: Send data timeout\n");
+ spin_unlock_irqrestore(&devc->lock,flags);
+ return 0;
+ }
+ write_data(devc, midi_byte);
+ spin_unlock_irqrestore(&devc->lock,flags);
+ return 1;
+}
+
+static int mpu401_command(int dev, mpu_command_rec * cmd)
+{
+ int i, timeout, ok;
+ int ret = 0;
+ unsigned long flags;
+ struct mpu_config *devc;
+
+ devc = &dev_conf[dev];
+
+ if (devc->uart_mode) /*
+ * Not possible in UART mode
+ */
+ {
+ printk(KERN_WARNING "mpu401: commands not possible in the UART mode\n");
+ return -EINVAL;
+ }
+ /*
+ * Test for input since pending input seems to block the output.
+ */
+ if (input_avail(devc))
+ mpu401_input_loop(devc);
+
+ /*
+ * Sometimes it takes about 50000 loops before the output becomes ready
+ * (After reset). Normally it takes just about 10 loops.
+ */
+
+ timeout = 50000;
+retry:
+ if (timeout-- <= 0)
+ {
+ printk(KERN_WARNING "mpu401: Command (0x%x) timeout\n", (int) cmd->cmd);
+ return -EIO;
+ }
+ spin_lock_irqsave(&devc->lock,flags);
+
+ if (!output_ready(devc))
+ {
+ spin_unlock_irqrestore(&devc->lock,flags);
+ goto retry;
+ }
+ write_command(devc, cmd->cmd);
+
+ ok = 0;
+ for (timeout = 50000; timeout > 0 && !ok; timeout--)
+ {
+ if (input_avail(devc))
+ {
+ if (devc->opened && devc->mode == MODE_SYNTH)
+ {
+ if (mpu_input_scanner(devc, read_data(devc)) == MPU_ACK)
+ ok = 1;
+ }
+ else
+ {
+ /* Device is not currently open. Use simpler method */
+ if (read_data(devc) == MPU_ACK)
+ ok = 1;
+ }
+ }
+ }
+ if (!ok)
+ {
+ spin_unlock_irqrestore(&devc->lock,flags);
+ return -EIO;
+ }
+ if (cmd->nr_args)
+ {
+ for (i = 0; i < cmd->nr_args; i++)
+ {
+ for (timeout = 3000; timeout > 0 && !output_ready(devc); timeout--);
+
+ if (!mpu401_out(dev, cmd->data[i]))
+ {
+ spin_unlock_irqrestore(&devc->lock,flags);
+ printk(KERN_WARNING "mpu401: Command (0x%x), parm send failed.\n", (int) cmd->cmd);
+ return -EIO;
+ }
+ }
+ }
+ ret = 0;
+ cmd->data[0] = 0;
+
+ if (cmd->nr_returns)
+ {
+ for (i = 0; i < cmd->nr_returns; i++)
+ {
+ ok = 0;
+ for (timeout = 5000; timeout > 0 && !ok; timeout--)
+ if (input_avail(devc))
+ {
+ cmd->data[i] = read_data(devc);
+ ok = 1;
+ }
+ if (!ok)
+ {
+ spin_unlock_irqrestore(&devc->lock,flags);
+ return -EIO;
+ }
+ }
+ }
+ spin_unlock_irqrestore(&devc->lock,flags);
+ return ret;
+}
+
+static int mpu_cmd(int dev, int cmd, int data)
+{
+ int ret;
+
+ static mpu_command_rec rec;
+
+ rec.cmd = cmd & 0xff;
+ rec.nr_args = ((cmd & 0xf0) == 0xE0);
+ rec.nr_returns = ((cmd & 0xf0) == 0xA0);
+ rec.data[0] = data & 0xff;
+
+ if ((ret = mpu401_command(dev, &rec)) < 0)
+ return ret;
+ return (unsigned char) rec.data[0];
+}
+
+static int mpu401_prefix_cmd(int dev, unsigned char status)
+{
+ struct mpu_config *devc = &dev_conf[dev];
+
+ if (devc->uart_mode)
+ return 1;
+
+ if (status < 0xf0)
+ {
+ if (mpu_cmd(dev, 0xD0, 0) < 0)
+ return 0;
+ return 1;
+ }
+ switch (status)
+ {
+ case 0xF0:
+ if (mpu_cmd(dev, 0xDF, 0) < 0)
+ return 0;
+ return 1;
+
+ default:
+ return 0;
+ }
+}
+
+static int mpu401_start_read(int dev)
+{
+ return 0;
+}
+
+static int mpu401_end_read(int dev)
+{
+ return 0;
+}
+
+static int mpu401_ioctl(int dev, unsigned cmd, void __user *arg)
+{
+ struct mpu_config *devc;
+ mpu_command_rec rec;
+ int val, ret;
+
+ devc = &dev_conf[dev];
+ switch (cmd)
+ {
+ case SNDCTL_MIDI_MPUMODE:
+ if (!(devc->capabilities & MPU_CAP_INTLG)) { /* No intelligent mode */
+ printk(KERN_WARNING "mpu401: Intelligent mode not supported by the HW\n");
+ return -EINVAL;
+ }
+ if (get_user(val, (int __user *)arg))
+ return -EFAULT;
+ set_uart_mode(dev, devc, !val);
+ return 0;
+
+ case SNDCTL_MIDI_MPUCMD:
+ if (copy_from_user(&rec, arg, sizeof(rec)))
+ return -EFAULT;
+ if ((ret = mpu401_command(dev, &rec)) < 0)
+ return ret;
+ if (copy_to_user(arg, &rec, sizeof(rec)))
+ return -EFAULT;
+ return 0;
+
+ default:
+ return -EINVAL;
+ }
+}
+
+static void mpu401_kick(int dev)
+{
+}
+
+static int mpu401_buffer_status(int dev)
+{
+ return 0; /*
+ * No data in buffers
+ */
+}
+
+static int mpu_synth_ioctl(int dev, unsigned int cmd, void __user *arg)
+{
+ int midi_dev;
+ struct mpu_config *devc;
+
+ midi_dev = synth_devs[dev]->midi_dev;
+
+ if (midi_dev < 0 || midi_dev > num_midis || midi_devs[midi_dev] == NULL)
+ return -ENXIO;
+
+ devc = &dev_conf[midi_dev];
+
+ switch (cmd)
+ {
+
+ case SNDCTL_SYNTH_INFO:
+ if (copy_to_user(arg, &mpu_synth_info[midi_dev],
+ sizeof(struct synth_info)))
+ return -EFAULT;
+ return 0;
+
+ case SNDCTL_SYNTH_MEMAVL:
+ return 0x7fffffff;
+
+ default:
+ return -EINVAL;
+ }
+}
+
+static int mpu_synth_open(int dev, int mode)
+{
+ int midi_dev, err;
+ struct mpu_config *devc;
+ struct coproc_operations *coprocessor;
+
+ midi_dev = synth_devs[dev]->midi_dev;
+
+ if (midi_dev < 0 || midi_dev > num_midis || midi_devs[midi_dev] == NULL)
+ return -ENXIO;
+
+ devc = &dev_conf[midi_dev];
+
+ /*
+ * Verify that the device is really running.
+ * Some devices (such as Ensoniq SoundScape don't
+ * work before the on board processor (OBP) is initialized
+ * by downloading its microcode.
+ */
+
+ if (!devc->initialized)
+ {
+ if (mpu401_status(devc) == 0xff) /* Bus float */
+ {
+ printk(KERN_ERR "mpu401: Device not initialized properly\n");
+ return -EIO;
+ }
+ reset_mpu401(devc);
+ }
+ if (devc->opened)
+ return -EBUSY;
+ devc->mode = MODE_SYNTH;
+ devc->synthno = dev;
+
+ devc->inputintr = NULL;
+
+ coprocessor = midi_devs[midi_dev]->coproc;
+ if (coprocessor) {
+ if (!try_module_get(coprocessor->owner))
+ return -ENODEV;
+
+ if ((err = coprocessor->open(coprocessor->devc, COPR_MIDI)) < 0)
+ {
+ printk(KERN_WARNING "mpu401: Can't access coprocessor device\n");
+ return err;
+ }
+ }
+ devc->opened = mode;
+ reset_mpu401(devc);
+
+ if (mode & OPEN_READ)
+ {
+ mpu_cmd(midi_dev, 0x8B, 0); /* Enable data in stop mode */
+ mpu_cmd(midi_dev, 0x34, 0); /* Return timing bytes in stop mode */
+ mpu_cmd(midi_dev, 0x87, 0); /* Enable pitch & controller */
+ }
+ return 0;
+}
+
+static void mpu_synth_close(int dev)
+{
+ int midi_dev;
+ struct mpu_config *devc;
+ struct coproc_operations *coprocessor;
+
+ midi_dev = synth_devs[dev]->midi_dev;
+
+ devc = &dev_conf[midi_dev];
+ mpu_cmd(midi_dev, 0x15, 0); /* Stop recording, playback and MIDI */
+ mpu_cmd(midi_dev, 0x8a, 0); /* Disable data in stopped mode */
+
+ devc->inputintr = NULL;
+
+ coprocessor = midi_devs[midi_dev]->coproc;
+ if (coprocessor) {
+ coprocessor->close(coprocessor->devc, COPR_MIDI);
+ module_put(coprocessor->owner);
+ }
+ devc->opened = 0;
+ devc->mode = 0;
+}
+
+#define MIDI_SYNTH_NAME "MPU-401 UART Midi"
+#define MIDI_SYNTH_CAPS SYNTH_CAP_INPUT
+#include "midi_synth.h"
+
+static struct synth_operations mpu401_synth_proto =
+{
+ .owner = THIS_MODULE,
+ .id = "MPU401",
+ .info = NULL,
+ .midi_dev = 0,
+ .synth_type = SYNTH_TYPE_MIDI,
+ .synth_subtype = 0,
+ .open = mpu_synth_open,
+ .close = mpu_synth_close,
+ .ioctl = mpu_synth_ioctl,
+ .kill_note = midi_synth_kill_note,
+ .start_note = midi_synth_start_note,
+ .set_instr = midi_synth_set_instr,
+ .reset = midi_synth_reset,
+ .hw_control = midi_synth_hw_control,
+ .load_patch = midi_synth_load_patch,
+ .aftertouch = midi_synth_aftertouch,
+ .controller = midi_synth_controller,
+ .panning = midi_synth_panning,
+ .bender = midi_synth_bender,
+ .setup_voice = midi_synth_setup_voice,
+ .send_sysex = midi_synth_send_sysex
+};
+
+static struct synth_operations *mpu401_synth_operations[MAX_MIDI_DEV];
+
+static struct midi_operations mpu401_midi_proto =
+{
+ .owner = THIS_MODULE,
+ .info = {"MPU-401 Midi", 0, MIDI_CAP_MPU401, SNDCARD_MPU401},
+ .in_info = {0},
+ .open = mpu401_open,
+ .close = mpu401_close,
+ .ioctl = mpu401_ioctl,
+ .outputc = mpu401_out,
+ .start_read = mpu401_start_read,
+ .end_read = mpu401_end_read,
+ .kick = mpu401_kick,
+ .buffer_status = mpu401_buffer_status,
+ .prefix_cmd = mpu401_prefix_cmd
+};
+
+static struct midi_operations mpu401_midi_operations[MAX_MIDI_DEV];
+
+static void mpu401_chk_version(int n, struct mpu_config *devc)
+{
+ int tmp;
+ unsigned long flags;
+
+ devc->version = devc->revision = 0;
+
+ spin_lock_irqsave(&devc->lock,flags);
+ if ((tmp = mpu_cmd(n, 0xAC, 0)) < 0)
+ {
+ spin_unlock_irqrestore(&devc->lock,flags);
+ return;
+ }
+ if ((tmp & 0xf0) > 0x20) /* Why it's larger than 2.x ??? */
+ {
+ spin_unlock_irqrestore(&devc->lock,flags);
+ return;
+ }
+ devc->version = tmp;
+
+ if ((tmp = mpu_cmd(n, 0xAD, 0)) < 0)
+ {
+ devc->version = 0;
+ spin_unlock_irqrestore(&devc->lock,flags);
+ return;
+ }
+ devc->revision = tmp;
+ spin_unlock_irqrestore(&devc->lock,flags);
+}
+
+int attach_mpu401(struct address_info *hw_config, struct module *owner)
+{
+ unsigned long flags;
+ char revision_char;
+
+ int m, ret;
+ struct mpu_config *devc;
+
+ hw_config->slots[1] = -1;
+ m = sound_alloc_mididev();
+ if (m == -1)
+ {
+ printk(KERN_WARNING "MPU-401: Too many midi devices detected\n");
+ ret = -ENOMEM;
+ goto out_err;
+ }
+ devc = &dev_conf[m];
+ devc->base = hw_config->io_base;
+ devc->osp = hw_config->osp;
+ devc->irq = hw_config->irq;
+ devc->opened = 0;
+ devc->uart_mode = 0;
+ devc->initialized = 0;
+ devc->version = 0;
+ devc->revision = 0;
+ devc->capabilities = 0;
+ devc->timer_flag = 0;
+ devc->m_busy = 0;
+ devc->m_state = ST_INIT;
+ devc->shared_irq = hw_config->always_detect;
+ devc->irq = hw_config->irq;
+ spin_lock_init(&devc->lock);
+
+ if (devc->irq < 0)
+ {
+ devc->irq *= -1;
+ devc->shared_irq = 1;
+ }
+
+ if (!hw_config->always_detect)
+ {
+ /* Verify the hardware again */
+ if (!reset_mpu401(devc))
+ {
+ printk(KERN_WARNING "mpu401: Device didn't respond\n");
+ ret = -ENODEV;
+ goto out_mididev;
+ }
+ if (!devc->shared_irq)
+ {
+ if (request_irq(devc->irq, mpuintr, 0, "mpu401", (void *)m) < 0)
+ {
+ printk(KERN_WARNING "mpu401: Failed to allocate IRQ%d\n", devc->irq);
+ ret = -ENOMEM;
+ goto out_mididev;
+ }
+ }
+ spin_lock_irqsave(&devc->lock,flags);
+ mpu401_chk_version(m, devc);
+ if (devc->version == 0)
+ mpu401_chk_version(m, devc);
+ spin_unlock_irqrestore(&devc->lock,flags);
+ }
+
+ if (devc->version != 0)
+ if (mpu_cmd(m, 0xC5, 0) >= 0) /* Set timebase OK */
+ if (mpu_cmd(m, 0xE0, 120) >= 0) /* Set tempo OK */
+ devc->capabilities |= MPU_CAP_INTLG; /* Supports intelligent mode */
+
+
+ mpu401_synth_operations[m] = (struct synth_operations *)kmalloc(sizeof(struct synth_operations), GFP_KERNEL);
+
+ if (mpu401_synth_operations[m] == NULL)
+ {
+ printk(KERN_ERR "mpu401: Can't allocate memory\n");
+ ret = -ENOMEM;
+ goto out_irq;
+ }
+ if (!(devc->capabilities & MPU_CAP_INTLG)) /* No intelligent mode */
+ {
+ memcpy((char *) mpu401_synth_operations[m],
+ (char *) &std_midi_synth,
+ sizeof(struct synth_operations));
+ }
+ else
+ {
+ memcpy((char *) mpu401_synth_operations[m],
+ (char *) &mpu401_synth_proto,
+ sizeof(struct synth_operations));
+ }
+ if (owner)
+ mpu401_synth_operations[m]->owner = owner;
+
+ memcpy((char *) &mpu401_midi_operations[m],
+ (char *) &mpu401_midi_proto,
+ sizeof(struct midi_operations));
+
+ mpu401_midi_operations[m].converter = mpu401_synth_operations[m];
+
+ memcpy((char *) &mpu_synth_info[m],
+ (char *) &mpu_synth_info_proto,
+ sizeof(struct synth_info));
+
+ n_mpu_devs++;
+
+ if (devc->version == 0x20 && devc->revision >= 0x07) /* MusicQuest interface */
+ {
+ int ports = (devc->revision & 0x08) ? 32 : 16;
+
+ devc->capabilities |= MPU_CAP_SYNC | MPU_CAP_SMPTE |
+ MPU_CAP_CLS | MPU_CAP_2PORT;
+
+ revision_char = (devc->revision == 0x7f) ? 'M' : ' ';
+ sprintf(mpu_synth_info[m].name, "MQX-%d%c MIDI Interface #%d",
+ ports,
+ revision_char,
+ n_mpu_devs);
+ }
+ else
+ {
+ revision_char = devc->revision ? devc->revision + '@' : ' ';
+ if ((int) devc->revision > ('Z' - '@'))
+ revision_char = '+';
+
+ devc->capabilities |= MPU_CAP_SYNC | MPU_CAP_FSK;
+
+ if (hw_config->name)
+ sprintf(mpu_synth_info[m].name, "%s (MPU401)", hw_config->name);
+ else
+ sprintf(mpu_synth_info[m].name,
+ "MPU-401 %d.%d%c Midi interface #%d",
+ (int) (devc->version & 0xf0) >> 4,
+ devc->version & 0x0f,
+ revision_char,
+ n_mpu_devs);
+ }
+
+ strcpy(mpu401_midi_operations[m].info.name,
+ mpu_synth_info[m].name);
+
+ conf_printf(mpu_synth_info[m].name, hw_config);
+
+ mpu401_synth_operations[m]->midi_dev = devc->devno = m;
+ mpu401_synth_operations[devc->devno]->info = &mpu_synth_info[devc->devno];
+
+ if (devc->capabilities & MPU_CAP_INTLG) /* Intelligent mode */
+ hw_config->slots[2] = mpu_timer_init(m);
+
+ midi_devs[m] = &mpu401_midi_operations[devc->devno];
+
+ if (owner)
+ midi_devs[m]->owner = owner;
+
+ hw_config->slots[1] = m;
+ sequencer_init();
+
+ return 0;
+
+out_irq:
+ free_irq(devc->irq, (void *)m);
+out_mididev:
+ sound_unload_mididev(m);
+out_err:
+ release_region(hw_config->io_base, 2);
+ return ret;
+}
+
+static int reset_mpu401(struct mpu_config *devc)
+{
+ unsigned long flags;
+ int ok, timeout, n;
+ int timeout_limit;
+
+ /*
+ * Send the RESET command. Try again if no success at the first time.
+ * (If the device is in the UART mode, it will not ack the reset cmd).
+ */
+
+ ok = 0;
+
+ timeout_limit = devc->initialized ? 30000 : 100000;
+ devc->initialized = 1;
+
+ for (n = 0; n < 2 && !ok; n++)
+ {
+ for (timeout = timeout_limit; timeout > 0 && !ok; timeout--)
+ ok = output_ready(devc);
+
+ write_command(devc, MPU_RESET); /*
+ * Send MPU-401 RESET Command
+ */
+
+ /*
+ * Wait at least 25 msec. This method is not accurate so let's make the
+ * loop bit longer. Cannot sleep since this is called during boot.
+ */
+
+ for (timeout = timeout_limit * 2; timeout > 0 && !ok; timeout--)
+ {
+ spin_lock_irqsave(&devc->lock,flags);
+ if (input_avail(devc))
+ if (read_data(devc) == MPU_ACK)
+ ok = 1;
+ spin_unlock_irqrestore(&devc->lock,flags);
+ }
+
+ }
+
+ devc->m_state = ST_INIT;
+ devc->m_ptr = 0;
+ devc->m_left = 0;
+ devc->last_status = 0;
+ devc->uart_mode = 0;
+
+ return ok;
+}
+
+static void set_uart_mode(int dev, struct mpu_config *devc, int arg)
+{
+ if (!arg && (devc->capabilities & MPU_CAP_INTLG))
+ return;
+ if ((devc->uart_mode == 0) == (arg == 0))
+ return; /* Already set */
+ reset_mpu401(devc); /* This exits the uart mode */
+
+ if (arg)
+ {
+ if (mpu_cmd(dev, UART_MODE_ON, 0) < 0)
+ {
+ printk(KERN_ERR "mpu401: Can't enter UART mode\n");
+ devc->uart_mode = 0;
+ return;
+ }
+ }
+ devc->uart_mode = arg;
+
+}
+
+int probe_mpu401(struct address_info *hw_config, struct resource *ports)
+{
+ int ok = 0;
+ struct mpu_config tmp_devc;
+
+ tmp_devc.base = hw_config->io_base;
+ tmp_devc.irq = hw_config->irq;
+ tmp_devc.initialized = 0;
+ tmp_devc.opened = 0;
+ tmp_devc.osp = hw_config->osp;
+
+ if (hw_config->always_detect)
+ return 1;
+
+ if (inb(hw_config->io_base + 1) == 0xff)
+ {
+ DDB(printk("MPU401: Port %x looks dead.\n", hw_config->io_base));
+ return 0; /* Just bus float? */
+ }
+ ok = reset_mpu401(&tmp_devc);
+
+ if (!ok)
+ {
+ DDB(printk("MPU401: Reset failed on port %x\n", hw_config->io_base));
+ }
+ return ok;
+}
+
+void unload_mpu401(struct address_info *hw_config)
+{
+ void *p;
+ int n=hw_config->slots[1];
+
+ if (n != -1) {
+ release_region(hw_config->io_base, 2);
+ if (hw_config->always_detect == 0 && hw_config->irq > 0)
+ free_irq(hw_config->irq, (void *)n);
+ p=mpu401_synth_operations[n];
+ sound_unload_mididev(n);
+ sound_unload_timerdev(hw_config->slots[2]);
+ if(p)
+ kfree(p);
+ }
+}
+
+/*****************************************************
+ * Timer stuff
+ ****************************************************/
+
+static volatile int timer_initialized = 0, timer_open = 0, tmr_running = 0;
+static volatile int curr_tempo, curr_timebase, hw_timebase;
+static int max_timebase = 8; /* 8*24=192 ppqn */
+static volatile unsigned long next_event_time;
+static volatile unsigned long curr_ticks, curr_clocks;
+static unsigned long prev_event_time;
+static int metronome_mode;
+
+static unsigned long clocks2ticks(unsigned long clocks)
+{
+ /*
+ * The MPU-401 supports just a limited set of possible timebase values.
+ * Since the applications require more choices, the driver has to
+ * program the HW to do its best and to convert between the HW and
+ * actual timebases.
+ */
+ return ((clocks * curr_timebase) + (hw_timebase / 2)) / hw_timebase;
+}
+
+static void set_timebase(int midi_dev, int val)
+{
+ int hw_val;
+
+ if (val < 48)
+ val = 48;
+ if (val > 1000)
+ val = 1000;
+
+ hw_val = val;
+ hw_val = (hw_val + 12) / 24;
+ if (hw_val > max_timebase)
+ hw_val = max_timebase;
+
+ if (mpu_cmd(midi_dev, 0xC0 | (hw_val & 0x0f), 0) < 0)
+ {
+ printk(KERN_WARNING "mpu401: Can't set HW timebase to %d\n", hw_val * 24);
+ return;
+ }
+ hw_timebase = hw_val * 24;
+ curr_timebase = val;
+
+}
+
+static void tmr_reset(struct mpu_config *devc)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&devc->lock,flags);
+ next_event_time = (unsigned long) -1;
+ prev_event_time = 0;
+ curr_ticks = curr_clocks = 0;
+ spin_unlock_irqrestore(&devc->lock,flags);
+}
+
+static void set_timer_mode(int midi_dev)
+{
+ if (timer_mode & TMR_MODE_CLS)
+ mpu_cmd(midi_dev, 0x3c, 0); /* Use CLS sync */
+ else if (timer_mode & TMR_MODE_SMPTE)
+ mpu_cmd(midi_dev, 0x3d, 0); /* Use SMPTE sync */
+
+ if (timer_mode & TMR_INTERNAL)
+ {
+ mpu_cmd(midi_dev, 0x80, 0); /* Use MIDI sync */
+ }
+ else
+ {
+ if (timer_mode & (TMR_MODE_MIDI | TMR_MODE_CLS))
+ {
+ mpu_cmd(midi_dev, 0x82, 0); /* Use MIDI sync */
+ mpu_cmd(midi_dev, 0x91, 0); /* Enable ext MIDI ctrl */
+ }
+ else if (timer_mode & TMR_MODE_FSK)
+ mpu_cmd(midi_dev, 0x81, 0); /* Use FSK sync */
+ }
+}
+
+static void stop_metronome(int midi_dev)
+{
+ mpu_cmd(midi_dev, 0x84, 0); /* Disable metronome */
+}
+
+static void setup_metronome(int midi_dev)
+{
+ int numerator, denominator;
+ int clks_per_click, num_32nds_per_beat;
+ int beats_per_measure;
+
+ numerator = ((unsigned) metronome_mode >> 24) & 0xff;
+ denominator = ((unsigned) metronome_mode >> 16) & 0xff;
+ clks_per_click = ((unsigned) metronome_mode >> 8) & 0xff;
+ num_32nds_per_beat = (unsigned) metronome_mode & 0xff;
+ beats_per_measure = (numerator * 4) >> denominator;
+
+ if (!metronome_mode)
+ mpu_cmd(midi_dev, 0x84, 0); /* Disable metronome */
+ else
+ {
+ mpu_cmd(midi_dev, 0xE4, clks_per_click);
+ mpu_cmd(midi_dev, 0xE6, beats_per_measure);
+ mpu_cmd(midi_dev, 0x83, 0); /* Enable metronome without accents */
+ }
+}
+
+static int mpu_start_timer(int midi_dev)
+{
+ struct mpu_config *devc= &dev_conf[midi_dev];
+
+ tmr_reset(devc);
+ set_timer_mode(midi_dev);
+
+ if (tmr_running)
+ return TIMER_NOT_ARMED; /* Already running */
+
+ if (timer_mode & TMR_INTERNAL)
+ {
+ mpu_cmd(midi_dev, 0x02, 0); /* Send MIDI start */
+ tmr_running = 1;
+ return TIMER_NOT_ARMED;
+ }
+ else
+ {
+ mpu_cmd(midi_dev, 0x35, 0); /* Enable mode messages to PC */
+ mpu_cmd(midi_dev, 0x38, 0); /* Enable sys common messages to PC */
+ mpu_cmd(midi_dev, 0x39, 0); /* Enable real time messages to PC */
+ mpu_cmd(midi_dev, 0x97, 0); /* Enable system exclusive messages to PC */
+ }
+ return TIMER_ARMED;
+}
+
+static int mpu_timer_open(int dev, int mode)
+{
+ int midi_dev = sound_timer_devs[dev]->devlink;
+ struct mpu_config *devc= &dev_conf[midi_dev];
+
+ if (timer_open)
+ return -EBUSY;
+
+ tmr_reset(devc);
+ curr_tempo = 50;
+ mpu_cmd(midi_dev, 0xE0, 50);
+ curr_timebase = hw_timebase = 120;
+ set_timebase(midi_dev, 120);
+ timer_open = 1;
+ metronome_mode = 0;
+ set_timer_mode(midi_dev);
+
+ mpu_cmd(midi_dev, 0xe7, 0x04); /* Send all clocks to host */
+ mpu_cmd(midi_dev, 0x95, 0); /* Enable clock to host */
+
+ return 0;
+}
+
+static void mpu_timer_close(int dev)
+{
+ int midi_dev = sound_timer_devs[dev]->devlink;
+
+ timer_open = tmr_running = 0;
+ mpu_cmd(midi_dev, 0x15, 0); /* Stop all */
+ mpu_cmd(midi_dev, 0x94, 0); /* Disable clock to host */
+ mpu_cmd(midi_dev, 0x8c, 0); /* Disable measure end messages to host */
+ stop_metronome(midi_dev);
+}
+
+static int mpu_timer_event(int dev, unsigned char *event)
+{
+ unsigned char command = event[1];
+ unsigned long parm = *(unsigned int *) &event[4];
+ int midi_dev = sound_timer_devs[dev]->devlink;
+
+ switch (command)
+ {
+ case TMR_WAIT_REL:
+ parm += prev_event_time;
+ case TMR_WAIT_ABS:
+ if (parm > 0)
+ {
+ long time;
+
+ if (parm <= curr_ticks) /* It's the time */
+ return TIMER_NOT_ARMED;
+ time = parm;
+ next_event_time = prev_event_time = time;
+
+ return TIMER_ARMED;
+ }
+ break;
+
+ case TMR_START:
+ if (tmr_running)
+ break;
+ return mpu_start_timer(midi_dev);
+
+ case TMR_STOP:
+ mpu_cmd(midi_dev, 0x01, 0); /* Send MIDI stop */
+ stop_metronome(midi_dev);
+ tmr_running = 0;
+ break;
+
+ case TMR_CONTINUE:
+ if (tmr_running)
+ break;
+ mpu_cmd(midi_dev, 0x03, 0); /* Send MIDI continue */
+ setup_metronome(midi_dev);
+ tmr_running = 1;
+ break;
+
+ case TMR_TEMPO:
+ if (parm)
+ {
+ if (parm < 8)
+ parm = 8;
+ if (parm > 250)
+ parm = 250;
+ if (mpu_cmd(midi_dev, 0xE0, parm) < 0)
+ printk(KERN_WARNING "mpu401: Can't set tempo to %d\n", (int) parm);
+ curr_tempo = parm;
+ }
+ break;
+
+ case TMR_ECHO:
+ seq_copy_to_input(event, 8);
+ break;
+
+ case TMR_TIMESIG:
+ if (metronome_mode) /* Metronome enabled */
+ {
+ metronome_mode = parm;
+ setup_metronome(midi_dev);
+ }
+ break;
+
+ default:;
+ }
+ return TIMER_NOT_ARMED;
+}
+
+static unsigned long mpu_timer_get_time(int dev)
+{
+ if (!timer_open)
+ return 0;
+
+ return curr_ticks;
+}
+
+static int mpu_timer_ioctl(int dev, unsigned int command, void __user *arg)
+{
+ int midi_dev = sound_timer_devs[dev]->devlink;
+ int __user *p = (int __user *)arg;
+
+ switch (command)
+ {
+ case SNDCTL_TMR_SOURCE:
+ {
+ int parm;
+
+ if (get_user(parm, p))
+ return -EFAULT;
+ parm &= timer_caps;
+
+ if (parm != 0)
+ {
+ timer_mode = parm;
+
+ if (timer_mode & TMR_MODE_CLS)
+ mpu_cmd(midi_dev, 0x3c, 0); /* Use CLS sync */
+ else if (timer_mode & TMR_MODE_SMPTE)
+ mpu_cmd(midi_dev, 0x3d, 0); /* Use SMPTE sync */
+ }
+ if (put_user(timer_mode, p))
+ return -EFAULT;
+ return timer_mode;
+ }
+ break;
+
+ case SNDCTL_TMR_START:
+ mpu_start_timer(midi_dev);
+ return 0;
+
+ case SNDCTL_TMR_STOP:
+ tmr_running = 0;
+ mpu_cmd(midi_dev, 0x01, 0); /* Send MIDI stop */
+ stop_metronome(midi_dev);
+ return 0;
+
+ case SNDCTL_TMR_CONTINUE:
+ if (tmr_running)
+ return 0;
+ tmr_running = 1;
+ mpu_cmd(midi_dev, 0x03, 0); /* Send MIDI continue */
+ return 0;
+
+ case SNDCTL_TMR_TIMEBASE:
+ {
+ int val;
+ if (get_user(val, p))
+ return -EFAULT;
+ if (val)
+ set_timebase(midi_dev, val);
+ if (put_user(curr_timebase, p))
+ return -EFAULT;
+ return curr_timebase;
+ }
+ break;
+
+ case SNDCTL_TMR_TEMPO:
+ {
+ int val;
+ int ret;
+
+ if (get_user(val, p))
+ return -EFAULT;
+
+ if (val)
+ {
+ if (val < 8)
+ val = 8;
+ if (val > 250)
+ val = 250;
+ if ((ret = mpu_cmd(midi_dev, 0xE0, val)) < 0)
+ {
+ printk(KERN_WARNING "mpu401: Can't set tempo to %d\n", (int) val);
+ return ret;
+ }
+ curr_tempo = val;
+ }
+ if (put_user(curr_tempo, p))
+ return -EFAULT;
+ return curr_tempo;
+ }
+ break;
+
+ case SNDCTL_SEQ_CTRLRATE:
+ {
+ int val;
+ if (get_user(val, p))
+ return -EFAULT;
+
+ if (val != 0) /* Can't change */
+ return -EINVAL;
+ val = ((curr_tempo * curr_timebase) + 30)/60;
+ if (put_user(val, p))
+ return -EFAULT;
+ return val;
+ }
+ break;
+
+ case SNDCTL_SEQ_GETTIME:
+ if (put_user(curr_ticks, p))
+ return -EFAULT;
+ return curr_ticks;
+
+ case SNDCTL_TMR_METRONOME:
+ if (get_user(metronome_mode, p))
+ return -EFAULT;
+ setup_metronome(midi_dev);
+ return 0;
+
+ default:;
+ }
+ return -EINVAL;
+}
+
+static void mpu_timer_arm(int dev, long time)
+{
+ if (time < 0)
+ time = curr_ticks + 1;
+ else if (time <= curr_ticks) /* It's the time */
+ return;
+ next_event_time = prev_event_time = time;
+ return;
+}
+
+static struct sound_timer_operations mpu_timer =
+{
+ .owner = THIS_MODULE,
+ .info = {"MPU-401 Timer", 0},
+ .priority = 10, /* Priority */
+ .devlink = 0, /* Local device link */
+ .open = mpu_timer_open,
+ .close = mpu_timer_close,
+ .event = mpu_timer_event,
+ .get_time = mpu_timer_get_time,
+ .ioctl = mpu_timer_ioctl,
+ .arm_timer = mpu_timer_arm
+};
+
+static void mpu_timer_interrupt(void)
+{
+ if (!timer_open)
+ return;
+
+ if (!tmr_running)
+ return;
+
+ curr_clocks++;
+ curr_ticks = clocks2ticks(curr_clocks);
+
+ if (curr_ticks >= next_event_time)
+ {
+ next_event_time = (unsigned long) -1;
+ sequencer_timer(0);
+ }
+}
+
+static void timer_ext_event(struct mpu_config *devc, int event, int parm)
+{
+ int midi_dev = devc->devno;
+
+ if (!devc->timer_flag)
+ return;
+
+ switch (event)
+ {
+ case TMR_CLOCK:
+ printk("<MIDI clk>");
+ break;
+
+ case TMR_START:
+ printk("Ext MIDI start\n");
+ if (!tmr_running)
+ {
+ if (timer_mode & TMR_EXTERNAL)
+ {
+ tmr_running = 1;
+ setup_metronome(midi_dev);
+ next_event_time = 0;
+ STORE(SEQ_START_TIMER());
+ }
+ }
+ break;
+
+ case TMR_STOP:
+ printk("Ext MIDI stop\n");
+ if (timer_mode & TMR_EXTERNAL)
+ {
+ tmr_running = 0;
+ stop_metronome(midi_dev);
+ STORE(SEQ_STOP_TIMER());
+ }
+ break;
+
+ case TMR_CONTINUE:
+ printk("Ext MIDI continue\n");
+ if (timer_mode & TMR_EXTERNAL)
+ {
+ tmr_running = 1;
+ setup_metronome(midi_dev);
+ STORE(SEQ_CONTINUE_TIMER());
+ }
+ break;
+
+ case TMR_SPP:
+ printk("Songpos: %d\n", parm);
+ if (timer_mode & TMR_EXTERNAL)
+ {
+ STORE(SEQ_SONGPOS(parm));
+ }
+ break;
+ }
+}
+
+static int mpu_timer_init(int midi_dev)
+{
+ struct mpu_config *devc;
+ int n;
+
+ devc = &dev_conf[midi_dev];
+
+ if (timer_initialized)
+ return -1; /* There is already a similar timer */
+
+ timer_initialized = 1;
+
+ mpu_timer.devlink = midi_dev;
+ dev_conf[midi_dev].timer_flag = 1;
+
+ n = sound_alloc_timerdev();
+ if (n == -1)
+ n = 0;
+ sound_timer_devs[n] = &mpu_timer;
+
+ if (devc->version < 0x20) /* Original MPU-401 */
+ timer_caps = TMR_INTERNAL | TMR_EXTERNAL | TMR_MODE_FSK | TMR_MODE_MIDI;
+ else
+ {
+ /*
+ * The version number 2.0 is used (at least) by the
+ * MusicQuest cards and the Roland Super-MPU.
+ *
+ * MusicQuest has given a special meaning to the bits of the
+ * revision number. The Super-MPU returns 0.
+ */
+
+ if (devc->revision)
+ timer_caps |= TMR_EXTERNAL | TMR_MODE_MIDI;
+
+ if (devc->revision & 0x02)
+ timer_caps |= TMR_MODE_CLS;
+
+
+ if (devc->revision & 0x40)
+ max_timebase = 10; /* Has the 216 and 240 ppqn modes */
+ }
+
+ timer_mode = (TMR_INTERNAL | TMR_MODE_MIDI) & timer_caps;
+ return n;
+
+}
+
+EXPORT_SYMBOL(probe_mpu401);
+EXPORT_SYMBOL(attach_mpu401);
+EXPORT_SYMBOL(unload_mpu401);
+EXPORT_SYMBOL(intchk_mpu401);
+EXPORT_SYMBOL(mpuintr);
+
+static struct address_info cfg;
+
+static int io = -1;
+static int irq = -1;
+
+module_param(irq, int, 0);
+module_param(io, int, 0);
+
+static int __init init_mpu401(void)
+{
+ int ret;
+ /* Can be loaded either for module use or to provide functions
+ to others */
+ if (io != -1 && irq != -1) {
+ struct resource *ports;
+ cfg.irq = irq;
+ cfg.io_base = io;
+ ports = request_region(io, 2, "mpu401");
+ if (!ports)
+ return -EBUSY;
+ if (probe_mpu401(&cfg, ports) == 0) {
+ release_region(io, 2);
+ return -ENODEV;
+ }
+ if ((ret = attach_mpu401(&cfg, THIS_MODULE)))
+ return ret;
+ }
+
+ return 0;
+}
+
+static void __exit cleanup_mpu401(void)
+{
+ if (io != -1 && irq != -1) {
+ /* Check for use by, for example, sscape driver */
+ unload_mpu401(&cfg);
+ }
+}
+
+module_init(init_mpu401);
+module_exit(cleanup_mpu401);
+
+#ifndef MODULE
+static int __init setup_mpu401(char *str)
+{
+ /* io, irq */
+ int ints[3];
+
+ str = get_options(str, ARRAY_SIZE(ints), ints);
+
+ io = ints[1];
+ irq = ints[2];
+
+ return 1;
+}
+
+__setup("mpu401=", setup_mpu401);
+#endif
+MODULE_LICENSE("GPL");
