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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [drivers/] [sound/] [pas2_card.c] - Rev 1772
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#define _PAS2_CARD_C_ /* * sound/pas2_card.c * * Detection routine for the Pro Audio Spectrum cards. */ #include <linux/config.h> #include "sound_config.h" #if defined(CONFIG_PAS) static unsigned char dma_bits[] = {4, 1, 2, 3, 0, 5, 6, 7}; static unsigned char irq_bits[] = {0, 0, 1, 2, 3, 4, 5, 6, 0, 1, 7, 8, 9, 0, 10, 11}; static unsigned char sb_irq_bits[] = {0x00, 0x00, 0x08, 0x10, 0x00, 0x18, 0x00, 0x20, 0x00, 0x08, 0x28, 0x30, 0x38, 0, 0}; static unsigned char sb_dma_bits[] = {0x00, 0x40, 0x80, 0xC0, 0, 0, 0, 0}; /* * The Address Translation code is used to convert I/O register addresses to * be relative to the given base -register */ int translate_code; static int pas_intr_mask = 0; static int pas_irq = 0; static int pas_sb_base = 0; int *pas_osp; char pas_model; static char *pas_model_names[] = {"", "Pro AudioSpectrum+", "CDPC", "Pro AudioSpectrum 16", "Pro AudioSpectrum 16D"}; /* * pas_read() and pas_write() are equivalents of inb and outb * These routines perform the I/O address translation required * to support other than the default base address */ extern void mix_write (unsigned char data, int ioaddr); unsigned char pas_read (int ioaddr) { return inb (ioaddr ^ translate_code); } void pas_write (unsigned char data, int ioaddr) { outb (data, ioaddr ^ translate_code); } /******************* Begin of the Interrupt Handler ********************/ void pasintr (int irq, void *dev_id, struct pt_regs *dummy) { int status; status = pas_read (0x0B89); pas_write (status, 0x0B89); /* Clear interrupt */ if (status & 0x08) { #ifdef CONFIG_AUDIO pas_pcm_interrupt (status, 1); #endif status &= ~0x08; } if (status & 0x10) { #ifdef CONFIG_MIDI pas_midi_interrupt (); #endif status &= ~0x10; } } int pas_set_intr (int mask) { if (!mask) return 0; pas_intr_mask |= mask; pas_write (pas_intr_mask, 0x0B8B); return 0; } int pas_remove_intr (int mask) { if (!mask) return 0; pas_intr_mask &= ~mask; pas_write (pas_intr_mask, 0x0B8B); return 0; } /******************* End of the Interrupt handler **********************/ /******************* Begin of the Initialization Code ******************/ int config_pas_hw (struct address_info *hw_config) { char ok = 1; unsigned int_ptrs; /* scsi/sound interrupt pointers */ pas_irq = hw_config->irq; pas_write (0x00, 0x0B8B); pas_write (0x36, 0x138B); /* * Local timer control * * register */ pas_write (0x36, 0x1388); /* * Sample rate timer (16 bit) */ pas_write (0, 0x1388); pas_write (0x74, 0x138B); /* * Local timer control * * register */ pas_write (0x74, 0x1389); /* * Sample count register (16 * * bit) */ pas_write (0, 0x1389); pas_write (0x80 | 0x40 | 0x20 | 1, 0x0B8A); pas_write (0x80 | 0x20 | 0x10 | 0x08 | 0x01, 0xF8A); pas_write (0x01 | 0x02 | 0x04 | 0x10 /* * | * 0x80 */ , 0xB88); pas_write (0x80 #ifdef PAS_JOYSTICK_ENABLE | 0x40 #endif ,0xF388); if (pas_irq < 0 || pas_irq > 15) { printk ("PAS2: Invalid IRQ %d", pas_irq); ok = 0; } else { int_ptrs = pas_read (0xF38A); int_ptrs |= irq_bits[pas_irq] & 0xf; pas_write (int_ptrs, 0xF38A); if (!irq_bits[pas_irq]) { printk ("PAS2: Invalid IRQ %d", pas_irq); ok = 0; } else { if (snd_set_irq_handler (pas_irq, pasintr, "PAS16", hw_config->osp) < 0) ok = 0; } } if (hw_config->dma < 0 || hw_config->dma > 7) { printk ("PAS2: Invalid DMA selection %d", hw_config->dma); ok = 0; } else { pas_write (dma_bits[hw_config->dma], 0xF389); if (!dma_bits[hw_config->dma]) { printk ("PAS2: Invalid DMA selection %d", hw_config->dma); ok = 0; } else { if (sound_alloc_dma (hw_config->dma, "PAS16")) { printk ("pas2_card.c: Can't allocate DMA channel\n"); ok = 0; } } } /* * This fixes the timing problems of the PAS due to the Symphony chipset * as per Media Vision. Only define this if your PAS doesn't work correctly. */ #ifdef SYMPHONY_PAS outb (0x05, 0xa8); outb (0x60, 0xa9); #endif #ifdef BROKEN_BUS_CLOCK pas_write (0x01 | 0x10 | 0x20 | 0x04, 0x8388); #else /* * pas_write(0x01, 0x8388); */ pas_write (0x01 | 0x10 | 0x20, 0x8388); #endif pas_write (0x18, 0x838A); /* ??? */ pas_write (0x20 | 0x01, 0x0B8A); /* Mute off, filter = 17.897 kHz */ pas_write (8, 0xBF8A); mix_write (0x80 | 5, 0x078B); mix_write (5, 0x078B); #if !defined(DISABLE_SB_EMULATION) && defined(CONFIG_SB) { struct address_info *sb_config; if ((sb_config = sound_getconf (SNDCARD_SB))) { unsigned char irq_dma; /* * Turn on Sound Blaster compatibility * bit 1 = SB emulation * bit 0 = MPU401 emulation (CDPC only :-( ) */ pas_write (0x02, 0xF788); /* * "Emulation address" */ pas_write ((sb_config->io_base >> 4) & 0x0f, 0xF789); pas_sb_base = sb_config->io_base; if (!sb_dma_bits[sb_config->dma]) printk ("\n\nPAS16 Warning: Invalid SB DMA %d\n\n", sb_config->dma); if (!sb_irq_bits[sb_config->irq]) printk ("\n\nPAS16 Warning: Invalid SB IRQ %d\n\n", sb_config->irq); irq_dma = sb_dma_bits[sb_config->dma] | sb_irq_bits[sb_config->irq]; pas_write (irq_dma, 0xFB8A); } else pas_write (0x00, 0xF788); } #else pas_write (0x00, 0xF788); #endif if (!ok) printk ("PAS16: Driver not enabled\n"); return ok; } int detect_pas_hw (struct address_info *hw_config) { unsigned char board_id, foo; /* * WARNING: Setting an option like W:1 or so that disables warm boot reset * of the card will screw up this detect code something fierce. Adding code * to handle this means possibly interfering with other cards on the bus if * you have something on base port 0x388. SO be forewarned. */ outb (0xBC, 0x9A01); /* Activate first board */ outb (hw_config->io_base >> 2, 0x9A01); /* Set base address */ translate_code = 0x388 ^ hw_config->io_base; pas_write (1, 0xBF88); /* Select one wait states */ board_id = pas_read (0x0B8B); if (board_id == 0xff) return 0; /* * We probably have a PAS-series board, now check for a PAS2-series board * by trying to change the board revision bits. PAS2-series hardware won't * let you do this - the bits are read-only. */ foo = board_id ^ 0xe0; pas_write (foo, 0x0B8B); foo = inb (0x0B8B); pas_write (board_id, 0x0B8B); if (board_id != foo) /* * Not a PAS2 */ return 0; pas_model = pas_read (0xFF88); return pas_model; } void attach_pas_card (struct address_info *hw_config) { pas_irq = hw_config->irq; pas_osp = hw_config->osp; if (detect_pas_hw (hw_config)) { if ((pas_model = pas_read (0xFF88))) { char temp[100]; sprintf (temp, "%s rev %d", pas_model_names[(int) pas_model], pas_read (0x2789)); conf_printf (temp, hw_config); } if (config_pas_hw (hw_config)) { #ifdef CONFIG_AUDIO pas_pcm_init (hw_config); #endif #if !defined(DISABLE_SB_EMULATION) && defined(CONFIG_SB) sb_dsp_disable_midi (pas_sb_base); /* No MIDI capability */ #endif #ifdef CONFIG_MIDI pas_midi_init (); #endif pas_init_mixer (); } } } int probe_pas (struct address_info *hw_config) { pas_osp = hw_config->osp; return detect_pas_hw (hw_config); } void unload_pas (struct address_info *hw_config) { sound_free_dma (hw_config->dma); snd_release_irq (hw_config->irq); } #endif
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