/* * Copyright (c) by Jaroslav Kysela * Routines for control of MPU-401 in UART mode * * Modified for the Aureal Vortex based Soundcards * by Manuel Jander (mjande@embedded.cl). * * Modified for ES1688 SoC in skibohan@maxia.com. * This file is put under the GPL license. * * -- * * Modified: * 01.04.2004 - created * 15.10.2004 - pascal port init code like in gus-driver (SPC7110/40/20110714) * - added support for different MPU-401 compatible chips * and revisions * */ #include #include #include #include #include #include #include #include #include #include #define CARD_NAME "MPU401" static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */ static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* MPU-401 port */ static long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* MPU-401 port */ static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* MPU-401 IRQ */ static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* MPU-401 IRQ */ static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* DMA 8 bits */ module_param_array(index, int, NULL, 0444); MODULE_PARM_DESC(index, "Index value for MPU-401 device."); module_param_array(id, charp, NULL, 0444); MODULE_PARM_DESC(id, "ID string for MPU-401 device."); module_param_array(enable, bool, NULL, 0444); MODULE_PARM_DESC(enable, "Enable MPU-401 device."); module_param_array(port, long, NULL, 0444); MODULE_PARM_DESC(port, "Port # for MPU-401 device."); module_param_array(mpu_port, long, NULL, 0444); MODULE_PARM_DESC(mpu_port, "MPU-401 port # for MPU-401 device."); module_param_array(irq, int, NULL, 0444); MODULE_PARM_DESC(irq, "IRQ # for MPU-401 device."); module_param_array(mpu_irq, int, NULL, 0444); MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for MPU-401 device."); module_param_array(dma8, int, NULL, 0444); MODULE_PARM_DESC(dma8, "8-bit DMA # for MPU-401 device."); #define VORTEX_MPU401_DRIVER "snd-vortex-midi" struct snd_vortex_midi { /* MIDI device. */ struct snd_rawmidi *rmidi; /* This allocates the rawmidi stream and its buffers. */ struct snd_rawmidi_str *rrawmidi; /* MPU-401 UART(s). */ int nr_urbs; struct urb **urbs; /* Additionally, we have the current MPU-401 buffer. */ u8 *mpu_buffer; int mpu_buffer_size; /* Storage for driver private data related to this MIDI interface. */ void *private_data; /* Something related to the mixer. */ int mixer_channels; int mixer_vol[2]; int mixer_sfx[2]; /* OPL3/DT-X YMF7xx only. */ int mixer_from_virtual; /* Relayed from virtual UART. */ int midi_broken; int enable_opl4; /* If OPL4 is enabled at least for one port. */ int opl3_broken; }; static int snd_vortex_midi_free(struct snd_rawmidi *rmidi) { struct snd_vortex_midi *midi = rmidi->private_data; midi->nr_urbs = 0; return 0; } static void snd_vortex_midi_input_trigger(struct snd_rawmidi_substream *substream, int up) { struct snd_vortex_midi *midi = substream->rmidi->private_data; unsigned long flags; spin_lock_irqsave(&midi->input_lock, flags); if (up) midi->mode[midi->current_midi_output_port] |= MIDI_MODE_INPUT(midi->current_midi_output_port); else midi->mode[midi->current_midi_output_port] &= ~MIDI_MODE_INPUT(midi->current_midi_output_port); if (midi->rmidi->use_internal_clock) snd_vortex_enable_midi_interrupts(midi); else outb(midi->last_rom_received = inb(midi->basemem), midi->basemem); spin_unlock_irqrestore(&midi->input_lock, flags); } static void snd_vortex_midi_output_timer(struct timer_list *t) { struct snd_vortex_midi *midi = from_timer(midi, t, timer); unsigned long flags; spin_lock_irqsave(&midi->virtual, flags); if (midi->mode[midi->last_midi_output_port] & MIDI_MODE_OUTPUT) { long c = midi->virtual_timer[midi->last_midi_output_port]; if (c >= 0) c = (c * (-1)); else c = (-1); if (c < 1) c = 1; while (c > 0) { outb(midi->virtual_timer[midi->last_midi_output_port], midi->basemem + VORTEX_MIDI_DATA); outb(midi->virtual_timer[midi->last_midi_output_port], midi->basemem + VORTEX_MIDI_CMD); if (midi->rmidi->private_data) if (midi->rmidi->private_data) snd_rawmidi_transmit(midi->rmidi, midi->tx_begin_page, 4); c--; midi->last_midi_output_port = (c << 1) | midi->channel; } } spin_unlock_irqrestore(&midi->virtual, flags); } static void snd_vortex_midi_enable_output(struct snd_rawmidi_substream *substream) { struct snd_vortex_midi *midi = substream->rmidi->private_data; midi->enable_virtual = 1; } static void snd_vortex_midi_disable_output(struct snd_rawmidi_substream *substream) { struct snd_vortex_midi *midi = substream->rmidi->private_data; midi->enable_virtual = 0; midi->interrupt_disable(midi,midi->tx_enable); } static int snd_vortex