| /* |
| * Low-level ALSA driver for the ENSONIQ SoundScape PnP |
| * Copyright (c) by Chris Rankin |
| * |
| * This driver was written in part using information obtained from |
| * the OSS/Free SoundScape driver, written by Hannu Savolainen. |
| * |
| * |
| * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #include <sound/driver.h> |
| #include <linux/init.h> |
| #include <linux/err.h> |
| #include <linux/isa.h> |
| #include <linux/delay.h> |
| #include <linux/pnp.h> |
| #include <linux/spinlock.h> |
| #include <linux/moduleparam.h> |
| #include <asm/dma.h> |
| #include <sound/core.h> |
| #include <sound/hwdep.h> |
| #include <sound/cs4231.h> |
| #include <sound/mpu401.h> |
| #include <sound/initval.h> |
| |
| #include <sound/sscape_ioctl.h> |
| |
| |
| MODULE_AUTHOR("Chris Rankin"); |
| MODULE_DESCRIPTION("ENSONIQ SoundScape PnP driver"); |
| MODULE_LICENSE("GPL"); |
| |
| static int index[SNDRV_CARDS] __devinitdata = SNDRV_DEFAULT_IDX; |
| static char* id[SNDRV_CARDS] __devinitdata = SNDRV_DEFAULT_STR; |
| static long port[SNDRV_CARDS] __devinitdata = { [0 ... (SNDRV_CARDS-1)] = SNDRV_AUTO_PORT }; |
| static int irq[SNDRV_CARDS] __devinitdata = SNDRV_DEFAULT_IRQ; |
| static int mpu_irq[SNDRV_CARDS] __devinitdata = SNDRV_DEFAULT_IRQ; |
| static int dma[SNDRV_CARDS] __devinitdata = SNDRV_DEFAULT_DMA; |
| |
| module_param_array(index, int, NULL, 0444); |
| MODULE_PARM_DESC(index, "Index number for SoundScape soundcard"); |
| |
| module_param_array(id, charp, NULL, 0444); |
| MODULE_PARM_DESC(id, "Description for SoundScape card"); |
| |
| module_param_array(port, long, NULL, 0444); |
| MODULE_PARM_DESC(port, "Port # for SoundScape driver."); |
| |
| module_param_array(irq, int, NULL, 0444); |
| MODULE_PARM_DESC(irq, "IRQ # for SoundScape driver."); |
| |
| module_param_array(mpu_irq, int, NULL, 0444); |
| MODULE_PARM_DESC(mpu_irq, "MPU401 IRQ # for SoundScape driver."); |
| |
| module_param_array(dma, int, NULL, 0444); |
| MODULE_PARM_DESC(dma, "DMA # for SoundScape driver."); |
| |
| #ifdef CONFIG_PNP |
| static int pnp_registered; |
| static struct pnp_card_device_id sscape_pnpids[] = { |
| { .id = "ENS3081", .devs = { { "ENS0000" } } }, |
| { .id = "" } /* end */ |
| }; |
| |
| MODULE_DEVICE_TABLE(pnp_card, sscape_pnpids); |
| #endif |
| |
| |
| #define MPU401_IO(i) ((i) + 0) |
| #define MIDI_DATA_IO(i) ((i) + 0) |
| #define MIDI_CTRL_IO(i) ((i) + 1) |
| #define HOST_CTRL_IO(i) ((i) + 2) |
| #define HOST_DATA_IO(i) ((i) + 3) |
| #define ODIE_ADDR_IO(i) ((i) + 4) |
| #define ODIE_DATA_IO(i) ((i) + 5) |
| #define CODEC_IO(i) ((i) + 8) |
| |
| #define IC_ODIE 1 |
| #define IC_OPUS 2 |
| |
| #define RX_READY 0x01 |
| #define TX_READY 0x02 |
| |
| #define CMD_ACK 0x80 |
| #define CMD_SET_MIDI_VOL 0x84 |
| #define CMD_GET_MIDI_VOL 0x85 |
| #define CMD_XXX_MIDI_VOL 0x86 |
| #define CMD_SET_EXTMIDI 0x8a |
| #define CMD_GET_EXTMIDI 0x8b |
| #define CMD_SET_MT32 0x8c |
| #define CMD_GET_MT32 0x8d |
| |
| enum GA_REG { |
| GA_INTSTAT_REG = 0, |
| GA_INTENA_REG, |
| GA_DMAA_REG, |
| GA_DMAB_REG, |
| GA_INTCFG_REG, |
| GA_DMACFG_REG, |
| GA_CDCFG_REG, |
| GA_SMCFGA_REG, |
| GA_SMCFGB_REG, |
| GA_HMCTL_REG |
| }; |
| |
| #define DMA_8BIT 0x80 |
| |
| |
| #define AD1845_FREQ_SEL_MSB 0x16 |
| #define AD1845_FREQ_SEL_LSB 0x17 |
| |
| struct soundscape { |
| spinlock_t lock; |
| unsigned io_base; |
| int codec_type; |
| int ic_type; |
| struct resource *io_res; |
| struct snd_cs4231 *chip; |
| struct snd_mpu401 *mpu; |
| struct snd_hwdep *hw; |
| |
| /* |
| * The MIDI device won't work until we've loaded |
| * its firmware via a hardware-dependent device IOCTL |
| */ |
| spinlock_t fwlock; |
| int hw_in_use; |
| unsigned long midi_usage; |
| unsigned char midi_vol; |
| }; |
| |
| #define INVALID_IRQ ((unsigned)-1) |
| |
| |
| static inline struct soundscape *get_card_soundscape(struct snd_card *c) |
| { |
| return (struct soundscape *) (c->private_data); |
| } |
| |
| static inline struct soundscape *get_mpu401_soundscape(struct snd_mpu401 * mpu) |
| { |
| return (struct soundscape *) (mpu->private_data); |
| } |
| |
| static inline struct soundscape *get_hwdep_soundscape(struct snd_hwdep * hw) |
| { |
| return (struct soundscape *) (hw->private_data); |
| } |
| |
| |
| /* |
| * Allocates some kernel memory that we can use for DMA. |
| * I think this means that the memory has to map to |
| * contiguous pages of physical memory. |
| */ |
| static struct snd_dma_buffer *get_dmabuf(struct snd_dma_buffer *buf, unsigned long size) |
| { |
| if (buf) { |
| if (snd_dma_alloc_pages_fallback(SNDRV_DMA_TYPE_DEV, snd_dma_isa_data(), |
| size, buf) < 0) { |
| snd_printk(KERN_ERR "sscape: Failed to allocate %lu bytes for DMA\n", size); |
| return NULL; |
| } |
| } |
| |
| return buf; |
| } |
| |
| /* |
| * Release the DMA-able kernel memory ... |
| */ |
| static void free_dmabuf(struct snd_dma_buffer *buf) |
| { |
| if (buf && buf->area) |
| snd_dma_free_pages(buf); |
| } |
| |
| |
| /* |
| * This function writes to the SoundScape's control registers, |
| * but doesn't do any locking. It's up to the caller to do that. |
| * This is why this function is "unsafe" ... |
| */ |
| static inline void sscape_write_unsafe(unsigned io_base, enum GA_REG reg, unsigned char val) |
| { |
| outb(reg, ODIE_ADDR_IO(io_base)); |
| outb(val, ODIE_DATA_IO(io_base)); |
| } |
| |
| /* |
| * Write to the SoundScape's control registers, and do the |
| * necessary locking ... |
| */ |
| static void sscape_write(struct soundscape *s, enum GA_REG reg, unsigned char val) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&s->lock, flags); |
| sscape_write_unsafe(s->io_base, reg, val); |
| spin_unlock_irqrestore(&s->lock, flags); |
| } |
| |
| /* |
| * Read from the SoundScape's control registers, but leave any |
| * locking to the caller. This is why the function is "unsafe" ... |
| */ |
| static inline unsigned char sscape_read_unsafe(unsigned io_base, enum GA_REG reg) |
| { |
| outb(reg, ODIE_ADDR_IO(io_base)); |
| return inb(ODIE_DATA_IO(io_base)); |
| } |
| |
| /* |
| * Puts the SoundScape into "host" mode, as compared to "MIDI" mode |
| */ |
| static inline void set_host_mode_unsafe(unsigned io_base) |
| { |
| outb(0x0, HOST_CTRL_IO(io_base)); |
| } |
| |
| /* |
| * Puts the SoundScape into "MIDI" mode, as compared to "host" mode |
| */ |
| static inline void set_midi_mode_unsafe(unsigned io_base) |
| { |
| outb(0x3, HOST_CTRL_IO(io_base)); |
| } |
| |
| /* |
| * Read the SoundScape's host-mode control register, but leave |
| * any locking issues to the caller ... |
| */ |
| static inline int host_read_unsafe(unsigned io_base) |
| { |
| int data = -1; |
| if ((inb(HOST_CTRL_IO(io_base)) & RX_READY) != 0) { |
| data = inb(HOST_DATA_IO(io_base)); |
| } |
| |
| return data; |
| } |
| |
| /* |
| * Read the SoundScape's host-mode control register, performing |
| * a limited amount of busy-waiting if the register isn't ready. |
| * Also leaves all locking-issues to the caller ... |
| */ |
| static int host_read_ctrl_unsafe(unsigned io_base, unsigned timeout) |
| { |
| int data; |
| |
| while (((data = host_read_unsafe(io_base)) < 0) && (timeout != 0)) { |
| udelay(100); |
| --timeout; |
| } /* while */ |
| |
| return data; |
| } |
| |
| /* |
| * Write to the SoundScape's host-mode control registers, but |
| * leave any locking issues to the caller ... |
| */ |
| static inline int host_write_unsafe(unsigned io_base, unsigned char data) |
| { |
| if ((inb(HOST_CTRL_IO(io_base)) & TX_READY) != 0) { |
| outb(data, HOST_DATA_IO(io_base)); |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Write to the SoundScape's host-mode control registers, performing |
| * a limited amount of busy-waiting if the register isn't ready. |
| * Also leaves all locking-issues to the caller ... |
| */ |
| static int host_write_ctrl_unsafe(unsigned io_base, unsigned char data, |
| unsigned timeout) |
| { |
| int err; |
| |
| while (!(err = host_write_unsafe(io_base, data)) && (timeout != 0)) { |
| udelay(100); |
| --timeout; |
| } /* while */ |
| |
| return err; |
| } |
| |
| |
| /* |
| * Check that the MIDI subsystem is operational. If it isn't, |
| * then we will hang the computer if we try to use it ... |
| * |
| * NOTE: This check is based upon observation, not documentation. |
| */ |
| static inline int verify_mpu401(const struct snd_mpu401 * mpu) |
| { |
| return ((inb(MIDI_CTRL_IO(mpu->port)) & 0xc0) == 0x80); |
| } |
| |
| /* |
| * This is apparently the standard way to initailise an MPU-401 |
| */ |
| static inline void initialise_mpu401(const struct snd_mpu401 * mpu) |
| { |
| outb(0, MIDI_DATA_IO(mpu->port)); |
| } |
| |
| /* |
| * Tell the SoundScape to activate the AD1845 chip (I think). |
| * The AD1845 detection fails if we *don't* do this, so I |
| * think that this is a good idea ... |
| */ |
| static inline void activate_ad1845_unsafe(unsigned io_base) |
| { |
| sscape_write_unsafe(io_base, GA_HMCTL_REG, (sscape_read_unsafe(io_base, GA_HMCTL_REG) & 0xcf) | 0x10); |
| sscape_write_unsafe(io_base, GA_CDCFG_REG, 0x80); |
| } |
| |
| /* |
| * Do the necessary ALSA-level cleanup to deallocate our driver ... |
| */ |
| static void soundscape_free(struct snd_card *c) |
| { |
| register struct soundscape *sscape = get_card_soundscape(c); |
| release_and_free_resource(sscape->io_res); |
| free_dma(sscape->chip->dma1); |
| } |
| |
| /* |
| * Tell the SoundScape to begin a DMA tranfer using the given channel. |
| * All locking issues are left to the caller. |
| */ |
| static inline void sscape_start_dma_unsafe(unsigned io_base, enum GA_REG reg) |
| { |
| sscape_write_unsafe(io_base, reg, sscape_read_unsafe(io_base, reg) | 0x01); |
| sscape_write_unsafe(io_base, reg, sscape_read_unsafe(io_base, reg) & 0xfe); |
| } |
| |
| /* |
| * Wait for a DMA transfer to complete. This is a "limited busy-wait", |
| * and all locking issues are left to the caller. |
| */ |
| static int sscape_wait_dma_unsafe(unsigned io_base, enum GA_REG reg, unsigned timeout) |
| { |
| while (!(sscape_read_unsafe(io_base, reg) & 0x01) && (timeout != 0)) { |
| udelay(100); |
| --timeout; |
| } /* while */ |
| |
| return (sscape_read_unsafe(io_base, reg) & 0x01); |
| } |
| |
| /* |
| * Wait for the On-Board Processor to return its start-up |
| * acknowledgement sequence. This wait is too long for |
| * us to perform "busy-waiting", and so we must sleep. |
| * This in turn means that we must not be holding any |
| * spinlocks when we call this function. |
| */ |
| static int obp_startup_ack(struct soundscape *s, unsigned timeout) |
| { |
| while (timeout != 0) { |
| unsigned long flags; |
| unsigned char x; |
| |
| schedule_timeout_interruptible(1); |
| |
| spin_lock_irqsave(&s->lock, flags); |
| x = inb(HOST_DATA_IO(s->io_base)); |
| spin_unlock_irqrestore(&s->lock, flags); |
| if ((x & 0xfe) == 0xfe) |
| return 1; |
| |
| --timeout; |
| } /* while */ |
| |
| return 0; |
| } |
| |
| /* |
| * Wait for the host to return its start-up acknowledgement |
| * sequence. This wait is too long for us to perform |
| * "busy-waiting", and so we must sleep. This in turn means |
| * that we must not be holding any spinlocks when we call |
| * this function. |
| */ |
| static int host_startup_ack(struct soundscape *s, unsigned timeout) |
| { |
| while (timeout != 0) { |
| unsigned long flags; |
| unsigned char x; |
| |
| schedule_timeout_interruptible(1); |
| |
| spin_lock_irqsave(&s->lock, flags); |
| x = inb(HOST_DATA_IO(s->io_base)); |
| spin_unlock_irqrestore(&s->lock, flags); |
| if (x == 0xfe) |
| return 1; |
| |
| --timeout; |
| } /* while */ |
| |
| return 0; |
| } |
| |
| /* |
| * Upload a byte-stream into the SoundScape using DMA channel A. |
| */ |
| static int upload_dma_data(struct soundscape *s, |
| const unsigned char __user *data, |
| size_t size) |
| { |
| unsigned long flags; |
| struct snd_dma_buffer dma; |
| int ret; |
| |
| if (!get_dmabuf(&dma, PAGE_ALIGN(size))) |
| return -ENOMEM; |
| |
| spin_lock_irqsave(&s->lock, flags); |
| |
| /* |
| * Reset the board ... |
| */ |
| sscape_write_unsafe(s->io_base, GA_HMCTL_REG, sscape_read_unsafe(s->io_base, GA_HMCTL_REG) & 0x3f); |
| |
| /* |
| * Enable the DMA channels and configure them ... |
| */ |
| sscape_write_unsafe(s->io_base, GA_DMACFG_REG, 0x50); |
| sscape_write_unsafe(s->io_base, GA_DMAA_REG, (s->chip->dma1 << 4) | DMA_8BIT); |
| sscape_write_unsafe(s->io_base, GA_DMAB_REG, 0x20); |
| |
| /* |
| * Take the board out of reset ... |
| */ |
| sscape_write_unsafe(s->io_base, GA_HMCTL_REG, sscape_read_unsafe(s->io_base, GA_HMCTL_REG) | 0x80); |
| |
| /* |
| * Upload the user's data (firmware?) to the SoundScape |
| * board through the DMA channel ... |
| */ |
| while (size != 0) { |
| unsigned long len; |
| |
| /* |
| * Apparently, copying to/from userspace can sleep. |
| * We are therefore forbidden from holding any |
| * spinlocks while we copy ... |
| */ |
| spin_unlock_irqrestore(&s->lock, flags); |
| |
| /* |
| * Remember that the data that we want to DMA |
| * comes from USERSPACE. We have already verified |
| * the userspace pointer ... |
| */ |
| len = min(size, dma.bytes); |
| len -= __copy_from_user(dma.area, data, len); |
| data += len; |
| size -= len; |
| |
| /* |
| * Grab that spinlock again, now that we've |
| * finished copying! |
| */ |
| spin_lock_irqsave(&s->lock, flags); |
| |
| snd_dma_program(s->chip->dma1, dma.addr, len, DMA_MODE_WRITE); |
| sscape_start_dma_unsafe(s->io_base, GA_DMAA_REG); |
| if (!sscape_wait_dma_unsafe(s->io_base, GA_DMAA_REG, 5000)) { |
| /* |
| * Don't forget to release this spinlock we're holding ... |
| */ |
| spin_unlock_irqrestore(&s->lock, flags); |
| |
| snd_printk(KERN_ERR "sscape: DMA upload has timed out\n"); |
| ret = -EAGAIN; |
| goto _release_dma; |
| } |
| } /* while */ |
| |
| set_host_mode_unsafe(s->io_base); |
| |
| /* |
| * Boot the board ... (I think) |
| */ |
| sscape_write_unsafe(s->io_base, GA_HMCTL_REG, sscape_read_unsafe(s->io_base, GA_HMCTL_REG) | 0x40); |
| spin_unlock_irqrestore(&s->lock, flags); |
| |
| /* |
| * If all has gone well, then the board should acknowledge |
| * the new upload and tell us that it has rebooted OK. We |
| * give it 5 seconds (max) ... |
| */ |
| ret = 0; |
| if (!obp_startup_ack(s, 5)) { |
| snd_printk(KERN_ERR "sscape: No response from on-board processor after upload\n"); |
| ret = -EAGAIN; |
| } else if (!host_startup_ack(s, 5)) { |
| snd_printk(KERN_ERR "sscape: SoundScape failed to initialise\n"); |
| ret = -EAGAIN; |
| } |
| |
| _release_dma: |
| /* |
| * NOTE!!! We are NOT holding any spinlocks at this point !!! |
| */ |
| sscape_write(s, GA_DMAA_REG, (s->ic_type == IC_ODIE ? 0x70 : 0x40)); |
| free_dmabuf(&dma); |
| |
| return ret; |
| } |
| |
| /* |
| * Upload the bootblock(?) into the SoundScape. The only |
| * purpose of this block of code seems to be to tell |
| * us which version of the microcode we should be using. |
| * |
| * NOTE: The boot-block data resides in USER-SPACE!!! |
| * However, we have already verified its memory |
| * addresses by the time we get here. |
| */ |
| static int sscape_upload_bootblock(struct soundscape *sscape, struct sscape_bootblock __user *bb) |
| { |
| unsigned long flags; |
| int data = 0; |
| int ret; |
| |
| ret = upload_dma_data(sscape, bb->code, sizeof(bb->code)); |
| |
| spin_lock_irqsave(&sscape->lock, flags); |
| if (ret == 0) { |
| data = host_read_ctrl_unsafe(sscape->io_base, 100); |
| } |
| set_midi_mode_unsafe(sscape->io_base); |
| spin_unlock_irqrestore(&sscape->lock, flags); |
| |
| if (ret == 0) { |
| if (data < 0) { |
| snd_printk(KERN_ERR "sscape: timeout reading firmware version\n"); |
| ret = -EAGAIN; |
| } |
| else if (__copy_to_user(&bb->version, &data, sizeof(bb->version))) { |
| ret = -EFAULT; |
| } |
| } |
| |
| return ret; |
| } |
| |
| /* |
| * Upload the microcode into the SoundScape. The |
| * microcode is 64K of data, and if we try to copy |
| * it into a local variable then we will SMASH THE |
| * KERNEL'S STACK! We therefore leave it in USER |
| * SPACE, and save ourselves from copying it at all. |
| */ |
| static int sscape_upload_microcode(struct soundscape *sscape, |
| const struct sscape_microcode __user *mc) |
| { |
| unsigned long flags; |
| char __user *code; |
| int err; |
| |
| /* |
| * We are going to have to copy this data into a special |
| * DMA-able buffer before we can upload it. We shall therefore |
| * just check that the data pointer is valid for now. |
| * |
| * NOTE: This buffer is 64K long! That's WAY too big to |
| * copy into a stack-temporary anyway. |
| */ |
| if ( get_user(code, &mc->code) || |
| !access_ok(VERIFY_READ, code, SSCAPE_MICROCODE_SIZE) ) |
| return -EFAULT; |
| |
| if ((err = upload_dma_data(sscape, code, SSCAPE_MICROCODE_SIZE)) == 0) { |
| snd_printk(KERN_INFO "sscape: MIDI firmware loaded\n"); |
| } |
| |
| spin_lock_irqsave(&sscape->lock, flags); |
| set_midi_mode_unsafe(sscape->io_base); |
| spin_unlock_irqrestore(&sscape->lock, flags); |
| |
| initialise_mpu401(sscape->mpu); |
| |
| return err; |
| } |
| |
| /* |
| * Hardware-specific device functions, to implement special |
| * IOCTLs for the SoundScape card. This is how we upload |
| * the microcode into the card, for example, and so we |
| * must ensure that no two processes can open this device |
| * simultaneously, and that we can't open it at all if |
| * someone is using the MIDI device. |
| */ |
| static int sscape_hw_open(struct snd_hwdep * hw, struct file *file) |
| { |
| register struct soundscape *sscape = get_hwdep_soundscape(hw); |
| unsigned long flags; |
| int err; |
| |
| spin_lock_irqsave(&sscape->fwlock, flags); |
| |
| if ((sscape->midi_usage != 0) || sscape->hw_in_use) { |
| err = -EBUSY; |
| } else { |
| sscape->hw_in_use = 1; |
| err = 0; |
| } |
| |
| spin_unlock_irqrestore(&sscape->fwlock, flags); |
| return err; |
| } |
| |
| static int sscape_hw_release(struct snd_hwdep * hw, struct file *file) |
| { |
| register struct soundscape *sscape = get_hwdep_soundscape(hw); |
| unsigned long flags; |
| |
| spin_lock_irqsave(&sscape->fwlock, flags); |
| sscape->hw_in_use = 0; |
| spin_unlock_irqrestore(&sscape->fwlock, flags); |
| return 0; |
| } |
| |
| static int sscape_hw_ioctl(struct snd_hwdep * hw, struct file *file, |
| unsigned int cmd, unsigned long arg) |
| { |
| struct soundscape *sscape = get_hwdep_soundscape(hw); |
| int err = -EBUSY; |
| |
| switch (cmd) { |
| case SND_SSCAPE_LOAD_BOOTB: |
| { |
| register struct sscape_bootblock __user *bb = (struct sscape_bootblock __user *) arg; |
| |
| /* |
| * We are going to have to copy this data into a special |
| * DMA-able buffer before we can upload it. We shall therefore |
| * just check that the data pointer is valid for now ... |
| */ |
| if ( !access_ok(VERIFY_READ, bb->code, sizeof(bb->code)) ) |
| return -EFAULT; |
| |
| /* |
| * Now check that we can write the firmware version number too... |
| */ |
| if ( !access_ok(VERIFY_WRITE, &bb->version, sizeof(bb->version)) ) |
| return -EFAULT; |
| |
| err = sscape_upload_bootblock(sscape, bb); |
| } |
| break; |
| |
| case SND_SSCAPE_LOAD_MCODE: |
| { |
| register const struct sscape_microcode __user *mc = (const struct sscape_microcode __user *) arg; |
| |
| err = sscape_upload_microcode(sscape, mc); |
| } |
| break; |
| |
| default: |
| err = -EINVAL; |
| break; |
| } /* switch */ |
| |
| return err; |
| } |
| |
| |
| /* |
| * Mixer control for the SoundScape's MIDI device. |
| */ |
| static int sscape_midi_info(struct snd_kcontrol *ctl, |
| 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 = 127; |
| return 0; |
| } |
| |
| static int sscape_midi_get(struct snd_kcontrol *kctl, |
| struct snd_ctl_elem_value *uctl) |
| { |
| struct snd_cs4231 *chip = snd_kcontrol_chip(kctl); |
| struct snd_card *card = chip->card; |
| register struct soundscape *s = get_card_soundscape(card); |
| unsigned long flags; |
| |
| spin_lock_irqsave(&s->lock, flags); |
| set_host_mode_unsafe(s->io_base); |
| |
| if (host_write_ctrl_unsafe(s->io_base, CMD_GET_MIDI_VOL, 100)) { |
| uctl->value.integer.value[0] = host_read_ctrl_unsafe(s->io_base, 100); |
| } |
| |
| set_midi_mode_unsafe(s->io_base); |
| spin_unlock_irqrestore(&s->lock, flags); |
| return 0; |
| } |
| |
| static int sscape_midi_put(struct snd_kcontrol *kctl, |
| struct snd_ctl_elem_value *uctl) |
| { |
| struct snd_cs4231 *chip = snd_kcontrol_chip(kctl); |
| struct snd_card *card = chip->card; |
| register struct soundscape *s = get_card_soundscape(card); |
| unsigned long flags; |
| int change; |
| |
| spin_lock_irqsave(&s->lock, flags); |
| |
| /* |
| * We need to put the board into HOST mode before we |
| * can send any volume-changing HOST commands ... |
| */ |
| set_host_mode_unsafe(s->io_base); |
| |
| /* |
| * To successfully change the MIDI volume setting, you seem to |
| * have to write a volume command, write the new volume value, |
| * and then perform another volume-related command. Perhaps the |
| * first command is an "open" and the second command is a "close"? |
| */ |
| if (s->midi_vol == ((unsigned char) uctl->value.integer. value[0] & 127)) { |
| change = 0; |
| goto __skip_change; |
| } |
| change = (host_write_ctrl_unsafe(s->io_base, CMD_SET_MIDI_VOL, 100) |
| && host_write_ctrl_unsafe(s->io_base, ((unsigned char) uctl->value.integer. value[0]) & 127, 100) |
| && host_write_ctrl_unsafe(s->io_base, CMD_XXX_MIDI_VOL, 100)); |
| __skip_change: |
| |
| /* |
| * Take the board out of HOST mode and back into MIDI mode ... |
| */ |
| set_midi_mode_unsafe(s->io_base); |
| |
| spin_unlock_irqrestore(&s->lock, flags); |
| return change; |
| } |
| |
| static struct snd_kcontrol_new midi_mixer_ctl = { |
| .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
| .name = "MIDI", |
| .info = sscape_midi_info, |
| .get = sscape_midi_get, |
| .put = sscape_midi_put |
| }; |
| |
| /* |
| * The SoundScape can use two IRQs from a possible set of four. |
| * These IRQs are encoded as bit patterns so that they can be |
| * written to the control registers. |
| */ |
| static unsigned __devinit get_irq_config(int irq) |
| { |
| static const int valid_irq[] = { 9, 5, 7, 10 }; |
| unsigned cfg; |
| |
| for (cfg = 0; cfg < ARRAY_SIZE(valid_irq); ++cfg) { |
| if (irq == valid_irq[cfg]) |
| return cfg; |
| } /* for */ |
| |
| return INVALID_IRQ; |
| } |
| |
| |
| /* |
| * Perform certain arcane port-checks to see whether there |
| * is a SoundScape board lurking behind the given ports. |
| */ |
| static int __devinit detect_sscape(struct soundscape *s) |
| { |
| unsigned long flags; |
| unsigned d; |
| int retval = 0; |
| |
| spin_lock_irqsave(&s->lock, flags); |
| |
| /* |
| * The following code is lifted from the original OSS driver, |
| * and as I don't have a datasheet I cannot really comment |
| * on what it is doing... |
| */ |
| if ((inb(HOST_CTRL_IO(s->io_base)) & 0x78) != 0) |
| goto _done; |
| |
| d = inb(ODIE_ADDR_IO(s->io_base)) & 0xf0; |
| if ((d & 0x80) != 0) |
| goto _done; |
| |
| if (d == 0) { |
| s->codec_type = 1; |
| s->ic_type = IC_ODIE; |
| } else if ((d & 0x60) != 0) { |
| s->codec_type = 2; |
| s->ic_type = IC_OPUS; |
| } else |
| goto _done; |
| |
| outb(0xfa, ODIE_ADDR_IO(s->io_base)); |
| if ((inb(ODIE_ADDR_IO(s->io_base)) & 0x9f) != 0x0a) |
| goto _done; |
| |
| outb(0xfe, ODIE_ADDR_IO(s->io_base)); |
| if ((inb(ODIE_ADDR_IO(s->io_base)) & 0x9f) != 0x0e) |
| goto _done; |
| if ((inb(ODIE_DATA_IO(s->io_base)) & 0x9f) != 0x0e) |
| goto _done; |
| |
| /* |
| * SoundScape successfully detected! |
| */ |
| retval = 1; |
| |
| _done: |
| spin_unlock_irqrestore(&s->lock, flags); |
| return retval; |
| } |
| |
| /* |
| * ALSA callback function, called when attempting to open the MIDI device. |
| * Check that the MIDI firmware has been loaded, because we don't want |
| * to crash the machine. Also check that someone isn't using the hardware |
| * IOCTL device. |
| */ |
| static int mpu401_open(struct snd_mpu401 * mpu) |
| { |
| int err; |
| |
| if (!verify_mpu401(mpu)) { |
| snd_printk(KERN_ERR "sscape: MIDI disabled, please load firmware\n"); |
| err = -ENODEV; |
| } else { |
| register struct soundscape *sscape = get_mpu401_soundscape(mpu); |
| unsigned long flags; |
| |
| spin_lock_irqsave(&sscape->fwlock, flags); |
| |
| if (sscape->hw_in_use || (sscape->midi_usage == ULONG_MAX)) { |
| err = -EBUSY; |
| } else { |
| ++(sscape->midi_usage); |
| err = 0; |
| } |
| |
| spin_unlock_irqrestore(&sscape->fwlock, flags); |
| } |
| |
| return err; |
| } |
| |
| static void mpu401_close(struct snd_mpu401 * mpu) |
| { |
| register struct soundscape *sscape = get_mpu401_soundscape(mpu); |
| unsigned long flags; |
| |
| spin_lock_irqsave(&sscape->fwlock, flags); |
| --(sscape->midi_usage); |
| spin_unlock_irqrestore(&sscape->fwlock, flags); |
| } |
| |
| /* |
| * Initialse an MPU-401 subdevice for MIDI support on the SoundScape. |
| */ |
| static int __devinit create_mpu401(struct snd_card *card, int devnum, unsigned long port, int irq) |
| { |
| struct soundscape *sscape = get_card_soundscape(card); |
| struct snd_rawmidi *rawmidi; |
| int err; |
| |
| if ((err = snd_mpu401_uart_new(card, devnum, |
| MPU401_HW_MPU401, |
| port, MPU401_INFO_INTEGRATED, |
| irq, IRQF_DISABLED, |
| &rawmidi)) == 0) { |
| struct snd_mpu401 *mpu = (struct snd_mpu401 *) rawmidi->private_data; |
| mpu->open_input = mpu401_open; |
| mpu->open_output = mpu401_open; |
| mpu->close_input = mpu401_close; |
| mpu->close_output = mpu401_close; |
| mpu->private_data = sscape; |
| sscape->mpu = mpu; |
| |
| initialise_mpu401(mpu); |
| } |
| |
| return err; |
| } |
| |
| |
| /* |
| * Override for the CS4231 playback format function. |
| * The AD1845 has much simpler format and rate selection. |
| */ |
| static void ad1845_playback_format(struct snd_cs4231 * chip, struct snd_pcm_hw_params *params, unsigned char format) |
| { |
| unsigned long flags; |
| unsigned rate = params_rate(params); |
| |
| /* |
| * The AD1845 can't handle sample frequencies |
| * outside of 4 kHZ to 50 kHZ |
| */ |
| if (rate > 50000) |
| rate = 50000; |
| else if (rate < 4000) |
| rate = 4000; |
| |
| spin_lock_irqsave(&chip->reg_lock, flags); |
| |
| /* |
| * Program the AD1845 correctly for the playback stream. |
| * Note that we do NOT need to toggle the MCE bit because |
| * the PLAYBACK_ENABLE bit of the Interface Configuration |
| * register is set. |
| * |
| * NOTE: We seem to need to write to the MSB before the LSB |
| * to get the correct sample frequency. |
| */ |
| snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, (format & 0xf0)); |
| snd_cs4231_out(chip, AD1845_FREQ_SEL_MSB, (unsigned char) (rate >> 8)); |
| snd_cs4231_out(chip, AD1845_FREQ_SEL_LSB, (unsigned char) rate); |
| |
| spin_unlock_irqrestore(&chip->reg_lock, flags); |
| } |
| |
| /* |
| * Override for the CS4231 capture format function. |
| * The AD1845 has much simpler format and rate selection. |
| */ |
| static void ad1845_capture_format(struct snd_cs4231 * chip, struct snd_pcm_hw_params *params, unsigned char format) |
| { |
| unsigned long flags; |
| unsigned rate = params_rate(params); |
| |
| /* |
| * The AD1845 can't handle sample frequencies |
| * outside of 4 kHZ to 50 kHZ |
| */ |
| if (rate > 50000) |
| rate = 50000; |
| else if (rate < 4000) |
| rate = 4000; |
| |
| spin_lock_irqsave(&chip->reg_lock, flags); |
| |
| /* |
| * Program the AD1845 correctly for the playback stream. |
| * Note that we do NOT need to toggle the MCE bit because |
| * the CAPTURE_ENABLE bit of the Interface Configuration |
| * register is set. |
| * |
| * NOTE: We seem to need to write to the MSB before the LSB |
| * to get the correct sample frequency. |
| */ |
| snd_cs4231_out(chip, CS4231_REC_FORMAT, (format & 0xf0)); |
| snd_cs4231_out(chip, AD1845_FREQ_SEL_MSB, (unsigned char) (rate >> 8)); |
| snd_cs4231_out(chip, AD1845_FREQ_SEL_LSB, (unsigned char) rate); |
| |
| spin_unlock_irqrestore(&chip->reg_lock, flags); |
| } |
| |
| /* |
| * Create an AD1845 PCM subdevice on the SoundScape. The AD1845 |
| * is very much like a CS4231, with a few extra bits. We will |
| * try to support at least some of the extra bits by overriding |
| * some of the CS4231 callback. |
| */ |
| static int __devinit create_ad1845(struct snd_card *card, unsigned port, int irq, int dma1) |
| { |
| register struct soundscape *sscape = get_card_soundscape(card); |
| struct snd_cs4231 *chip; |
| int err; |
| |
| #define CS4231_SHARE_HARDWARE (CS4231_HWSHARE_DMA1 | CS4231_HWSHARE_DMA2) |
| /* |
| * The AD1845 PCM device is only half-duplex, and so |
| * we only give it one DMA channel ... |
| */ |
| if ((err = snd_cs4231_create(card, |
| port, -1, irq, dma1, dma1, |
| CS4231_HW_DETECT, |
| CS4231_HWSHARE_DMA1, &chip)) == 0) { |
| unsigned long flags; |
| struct snd_pcm *pcm; |
| |
| #define AD1845_FREQ_SEL_ENABLE 0x08 |
| |
| #define AD1845_PWR_DOWN_CTRL 0x1b |
| #define AD1845_CRYS_CLOCK_SEL 0x1d |
| |
| /* |
| * It turns out that the PLAYBACK_ENABLE bit is set |
| * by the lowlevel driver ... |
| * |
| #define AD1845_IFACE_CONFIG \ |
| (CS4231_AUTOCALIB | CS4231_RECORD_ENABLE | CS4231_PLAYBACK_ENABLE) |
| snd_cs4231_mce_up(chip); |
| spin_lock_irqsave(&chip->reg_lock, flags); |
| snd_cs4231_out(chip, CS4231_IFACE_CTRL, AD1845_IFACE_CONFIG); |
| spin_unlock_irqrestore(&chip->reg_lock, flags); |
| snd_cs4231_mce_down(chip); |
| */ |
| |
| /* |
| * The input clock frequency on the SoundScape must |
| * be 14.31818 MHz, because we must set this register |
| * to get the playback to sound correct ... |
| */ |
| snd_cs4231_mce_up(chip); |
| spin_lock_irqsave(&chip->reg_lock, flags); |
| snd_cs4231_out(chip, AD1845_CRYS_CLOCK_SEL, 0x20); |
| spin_unlock_irqrestore(&chip->reg_lock, flags); |
| snd_cs4231_mce_down(chip); |
| |
| /* |
| * More custom configuration: |
| * a) select "mode 2", and provide a current drive of 8 mA |
| * b) enable frequency selection (for capture/playback) |
| */ |
| spin_lock_irqsave(&chip->reg_lock, flags); |
| snd_cs4231_out(chip, CS4231_MISC_INFO, (CS4231_MODE2 | 0x10)); |
| snd_cs4231_out(chip, AD1845_PWR_DOWN_CTRL, snd_cs4231_in(chip, AD1845_PWR_DOWN_CTRL) | AD1845_FREQ_SEL_ENABLE); |
| spin_unlock_irqrestore(&chip->reg_lock, flags); |
| |
| if ((err = snd_cs4231_pcm(chip, 0, &pcm)) < 0) { |
| snd_printk(KERN_ERR "sscape: No PCM device for AD1845 chip\n"); |
| goto _error; |
| } |
| |
| if ((err = snd_cs4231_mixer(chip)) < 0) { |
| snd_printk(KERN_ERR "sscape: No mixer device for AD1845 chip\n"); |
| goto _error; |
| } |
| |
| if ((err = snd_ctl_add(card, snd_ctl_new1(&midi_mixer_ctl, chip))) < 0) { |
| snd_printk(KERN_ERR "sscape: Could not create MIDI mixer control\n"); |
| goto _error; |
| } |
| |
| strcpy(card->driver, "SoundScape"); |
| strcpy(card->shortname, pcm->name); |
| snprintf(card->longname, sizeof(card->longname), |
| "%s at 0x%lx, IRQ %d, DMA %d\n", |
| pcm->name, chip->port, chip->irq, chip->dma1); |
| chip->set_playback_format = ad1845_playback_format; |
| chip->set_capture_format = ad1845_capture_format; |
| sscape->chip = chip; |
| } |
| |
| _error: |
| return err; |
| } |
| |
| |
| /* |
| * Create an ALSA soundcard entry for the SoundScape, using |
| * the given list of port, IRQ and DMA resources. |
| */ |
| static int __devinit create_sscape(int dev, struct snd_card **rcardp) |
| { |
| struct snd_card *card; |
| register struct soundscape *sscape; |
| register unsigned dma_cfg; |
| unsigned irq_cfg; |
| unsigned mpu_irq_cfg; |
| unsigned xport; |
| struct resource *io_res; |
| unsigned long flags; |
| int err; |
| |
| /* |
| * Check that the user didn't pass us garbage data ... |
| */ |
| irq_cfg = get_irq_config(irq[dev]); |
| if (irq_cfg == INVALID_IRQ) { |
| snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", irq[dev]); |
| return -ENXIO; |
| } |
| |
| mpu_irq_cfg = get_irq_config(mpu_irq[dev]); |
| if (mpu_irq_cfg == INVALID_IRQ) { |
| printk(KERN_ERR "sscape: Invalid IRQ %d\n", mpu_irq[dev]); |
| return -ENXIO; |
| } |
| xport = port[dev]; |
| |
| /* |
| * Grab IO ports that we will need to probe so that we |
| * can detect and control this hardware ... |
| */ |
| if ((io_res = request_region(xport, 8, "SoundScape")) == NULL) { |
| snd_printk(KERN_ERR "sscape: can't grab port 0x%x\n", xport); |
| return -EBUSY; |
| } |
| |
| /* |
| * Grab both DMA channels (OK, only one for now) ... |
| */ |
| if ((err = request_dma(dma[dev], "SoundScape")) < 0) { |
| snd_printk(KERN_ERR "sscape: can't grab DMA %d\n", dma[dev]); |
| goto _release_region; |
| } |
| |
| /* |
| * Create a new ALSA sound card entry, in anticipation |
| * of detecting our hardware ... |
| */ |
| if ((card = snd_card_new(index[dev], id[dev], THIS_MODULE, |
| sizeof(struct soundscape))) == NULL) { |
| err = -ENOMEM; |
| goto _release_dma; |
| } |
| |
| sscape = get_card_soundscape(card); |
| spin_lock_init(&sscape->lock); |
| spin_lock_init(&sscape->fwlock); |
| sscape->io_res = io_res; |
| sscape->io_base = xport; |
| |
| if (!detect_sscape(sscape)) { |
| printk(KERN_ERR "sscape: hardware not detected at 0x%x\n", sscape->io_base); |
| err = -ENODEV; |
| goto _release_card; |
| } |
| |
| printk(KERN_INFO "sscape: hardware detected at 0x%x, using IRQ %d, DMA %d\n", |
| sscape->io_base, irq[dev], dma[dev]); |
| |
| /* |
| * Now create the hardware-specific device so that we can |
| * load the microcode into the on-board processor. |
| * We cannot use the MPU-401 MIDI system until this firmware |
| * has been loaded into the card. |
| */ |
| if ((err = snd_hwdep_new(card, "MC68EC000", 0, &(sscape->hw))) < 0) { |
| printk(KERN_ERR "sscape: Failed to create firmware device\n"); |
| goto _release_card; |
| } |
| strlcpy(sscape->hw->name, "SoundScape M68K", sizeof(sscape->hw->name)); |
| sscape->hw->name[sizeof(sscape->hw->name) - 1] = '\0'; |
| sscape->hw->iface = SNDRV_HWDEP_IFACE_SSCAPE; |
| sscape->hw->ops.open = sscape_hw_open; |
| sscape->hw->ops.release = sscape_hw_release; |
| sscape->hw->ops.ioctl = sscape_hw_ioctl; |
| sscape->hw->private_data = sscape; |
| |
| /* |
| * Tell the on-board devices where their resources are (I think - |
| * I can't be sure without a datasheet ... So many magic values!) |
| */ |
| spin_lock_irqsave(&sscape->lock, flags); |
| |
| activate_ad1845_unsafe(sscape->io_base); |
| |
| sscape_write_unsafe(sscape->io_base, GA_INTENA_REG, 0x00); /* disable */ |
| sscape_write_unsafe(sscape->io_base, GA_SMCFGA_REG, 0x2e); |
| sscape_write_unsafe(sscape->io_base, GA_SMCFGB_REG, 0x00); |
| |
| /* |
| * Enable and configure the DMA channels ... |
| */ |
| sscape_write_unsafe(sscape->io_base, GA_DMACFG_REG, 0x50); |
| dma_cfg = (sscape->ic_type == IC_ODIE ? 0x70 : 0x40); |
| sscape_write_unsafe(sscape->io_base, GA_DMAA_REG, dma_cfg); |
| sscape_write_unsafe(sscape->io_base, GA_DMAB_REG, 0x20); |
| |
| sscape_write_unsafe(sscape->io_base, |
| GA_INTCFG_REG, 0xf0 | (mpu_irq_cfg << 2) | mpu_irq_cfg); |
| sscape_write_unsafe(sscape->io_base, |
| GA_CDCFG_REG, 0x09 | DMA_8BIT | (dma[dev] << 4) | (irq_cfg << 1)); |
| |
| spin_unlock_irqrestore(&sscape->lock, flags); |
| |
| /* |
| * We have now enabled the codec chip, and so we should |
| * detect the AD1845 device ... |
| */ |
| if ((err = create_ad1845(card, CODEC_IO(xport), irq[dev], dma[dev])) < 0) { |
| printk(KERN_ERR "sscape: No AD1845 device at 0x%x, IRQ %d\n", |
| CODEC_IO(xport), irq[dev]); |
| goto _release_card; |
| } |
| #define MIDI_DEVNUM 0 |
| if ((err = create_mpu401(card, MIDI_DEVNUM, MPU401_IO(xport), mpu_irq[dev])) < 0) { |
| printk(KERN_ERR "sscape: Failed to create MPU-401 device at 0x%x\n", |
| MPU401_IO(xport)); |
| goto _release_card; |
| } |
| |
| /* |
| * Enable the master IRQ ... |
| */ |
| sscape_write(sscape, GA_INTENA_REG, 0x80); |
| |
| /* |
| * Initialize mixer |
| */ |
| sscape->midi_vol = 0; |
| host_write_ctrl_unsafe(sscape->io_base, CMD_SET_MIDI_VOL, 100); |
| host_write_ctrl_unsafe(sscape->io_base, 0, 100); |
| host_write_ctrl_unsafe(sscape->io_base, CMD_XXX_MIDI_VOL, 100); |
| |
| /* |
| * Now that we have successfully created this sound card, |
| * it is safe to store the pointer. |
| * NOTE: we only register the sound card's "destructor" |
| * function now that our "constructor" has completed. |
| */ |
| card->private_free = soundscape_free; |
| *rcardp = card; |
| |
| return 0; |
| |
| _release_card: |
| snd_card_free(card); |
| |
| _release_dma: |
| free_dma(dma[dev]); |
| |
| _release_region: |
| release_and_free_resource(io_res); |
| |
| return err; |
| } |
| |
| |
| static int __devinit snd_sscape_match(struct device *pdev, unsigned int i) |
| { |
| /* |
| * Make sure we were given ALL of the other parameters. |
| */ |
| if (port[i] == SNDRV_AUTO_PORT) |
| return 0; |
| |
| if (irq[i] == SNDRV_AUTO_IRQ || |
| mpu_irq[i] == SNDRV_AUTO_IRQ || |
| dma[i] == SNDRV_AUTO_DMA) { |
| printk(KERN_INFO |
| "sscape: insufficient parameters, need IO, IRQ, MPU-IRQ and DMA\n"); |
| return 0; |
| } |
| |
| return 1; |
| } |
| |
| static int __devinit snd_sscape_probe(struct device *pdev, unsigned int dev) |
| { |
| struct snd_card *card; |
| int ret; |
| |
| dma[dev] &= 0x03; |
| ret = create_sscape(dev, &card); |
| if (ret < 0) |
| return ret; |
| snd_card_set_dev(card, pdev); |
| if ((ret = snd_card_register(card)) < 0) { |
| printk(KERN_ERR "sscape: Failed to register sound card\n"); |
| return ret; |
| } |
| dev_set_drvdata(pdev, card); |
| return 0; |
| } |
| |
| static int __devexit snd_sscape_remove(struct device *devptr, unsigned int dev) |
| { |
| snd_card_free(dev_get_drvdata(devptr)); |
| dev_set_drvdata(devptr, NULL); |
| return 0; |
| } |
| |
| #define SSCAPE_DRIVER "snd_sscape" |
| |
| static struct isa_driver snd_sscape_driver = { |
| .match = snd_sscape_match, |
| .probe = snd_sscape_probe, |
| .remove = __devexit_p(snd_sscape_remove), |
| /* FIXME: suspend/resume */ |
| .driver = { |
| .name = SSCAPE_DRIVER |
| }, |
| }; |
| |
| #ifdef CONFIG_PNP |
| static inline int __devinit get_next_autoindex(int i) |
| { |
| while (i < SNDRV_CARDS && port[i] != SNDRV_AUTO_PORT) |
| ++i; |
| return i; |
| } |
| |
| |
| static int __devinit sscape_pnp_detect(struct pnp_card_link *pcard, |
| const struct pnp_card_device_id *pid) |
| { |
| static int idx = 0; |
| struct pnp_dev *dev; |
| struct snd_card *card; |
| int ret; |
| |
| /* |
| * Allow this function to fail *quietly* if all the ISA PnP |
| * devices were configured using module parameters instead. |
| */ |
| if ((idx = get_next_autoindex(idx)) >= SNDRV_CARDS) |
| return -ENOSPC; |
| |
| /* |
| * We have found a candidate ISA PnP card. Now we |
| * have to check that it has the devices that we |
| * expect it to have. |
| * |
| * We will NOT try and autoconfigure all of the resources |
| * needed and then activate the card as we are assuming that |
| * has already been done at boot-time using /proc/isapnp. |
| * We shall simply try to give each active card the resources |
| * that it wants. This is a sensible strategy for a modular |
| * system where unused modules are unloaded regularly. |
| * |
| * This strategy is utterly useless if we compile the driver |
| * into the kernel, of course. |
| */ |
| // printk(KERN_INFO "sscape: %s\n", card->name); |
| |
| /* |
| * Check that we still have room for another sound card ... |
| */ |
| dev = pnp_request_card_device(pcard, pid->devs[0].id, NULL); |
| if (! dev) |
| return -ENODEV; |
| |
| if (!pnp_is_active(dev)) { |
| if (pnp_activate_dev(dev) < 0) { |
| printk(KERN_INFO "sscape: device is inactive\n"); |
| return -EBUSY; |
| } |
| } |
| |
| /* |
| * Read the correct parameters off the ISA PnP bus ... |
| */ |
| port[idx] = pnp_port_start(dev, 0); |
| irq[idx] = pnp_irq(dev, 0); |
| mpu_irq[idx] = pnp_irq(dev, 1); |
| dma[idx] = pnp_dma(dev, 0) & 0x03; |
| |
| ret = create_sscape(idx, &card); |
| if (ret < 0) |
| return ret; |
| snd_card_set_dev(card, &pcard->card->dev); |
| if ((ret = snd_card_register(card)) < 0) { |
| printk(KERN_ERR "sscape: Failed to register sound card\n"); |
| snd_card_free(card); |
| return ret; |
| } |
| |
| pnp_set_card_drvdata(pcard, card); |
| ++idx; |
| |
| return ret; |
| } |
| |
| static void __devexit sscape_pnp_remove(struct pnp_card_link * pcard) |
| { |
| snd_card_free(pnp_get_card_drvdata(pcard)); |
| pnp_set_card_drvdata(pcard, NULL); |
| } |
| |
| static struct pnp_card_driver sscape_pnpc_driver = { |
| .flags = PNP_DRIVER_RES_DO_NOT_CHANGE, |
| .name = "sscape", |
| .id_table = sscape_pnpids, |
| .probe = sscape_pnp_detect, |
| .remove = __devexit_p(sscape_pnp_remove), |
| }; |
| |
| #endif /* CONFIG_PNP */ |
| |
| static int __init sscape_init(void) |
| { |
| int ret; |
| |
| /* |
| * First check whether we were passed any parameters. |
| * These MUST take precedence over ANY automatic way |
| * of allocating cards, because the operator is |
| * S-P-E-L-L-I-N-G it out for us... |
| */ |
| ret = isa_register_driver(&snd_sscape_driver, SNDRV_CARDS); |
| if (ret < 0) |
| return ret; |
| #ifdef CONFIG_PNP |
| if (pnp_register_card_driver(&sscape_pnpc_driver) == 0) |
| pnp_registered = 1; |
| #endif |
| return 0; |
| } |
| |
| static void __exit sscape_exit(void) |
| { |
| #ifdef CONFIG_PNP |
| if (pnp_registered) |
| pnp_unregister_card_driver(&sscape_pnpc_driver); |
| #endif |
| isa_unregister_driver(&snd_sscape_driver); |
| } |
| |
| module_init(sscape_init); |
| module_exit(sscape_exit); |