diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /sound/oss/ad1848.c |
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!
Diffstat (limited to 'sound/oss/ad1848.c')
-rw-r--r-- | sound/oss/ad1848.c | 3159 |
1 files changed, 3159 insertions, 0 deletions
diff --git a/sound/oss/ad1848.c b/sound/oss/ad1848.c new file mode 100644 index 000000000000..4384dac3f794 --- /dev/null +++ b/sound/oss/ad1848.c @@ -0,0 +1,3159 @@ +/* + * sound/ad1848.c + * + * The low level driver for the AD1848/CS4248 codec chip which + * is used for example in the MS Sound System. + * + * The CS4231 which is used in the GUS MAX and some other cards is + * upwards compatible with AD1848 and this driver is able to drive it. + * + * CS4231A and AD1845 are upward compatible with CS4231. However + * the new features of these chips are different. + * + * CS4232 is a PnP audio chip which contains a CS4231A (and SB, MPU). + * CS4232A is an improved version of CS4232. + * + * + * + * 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) + * general sleep/wakeup clean up. + * Alan Cox : reformatted. Fixed SMP bugs. Moved to kernel alloc/free + * of irqs. Use dev_id. + * Christoph Hellwig : adapted to module_init/module_exit + * Aki Laukkanen : added power management support + * Arnaldo C. de Melo : added missing restore_flags in ad1848_resume + * Miguel Freitas : added ISA PnP support + * Alan Cox : Added CS4236->4239 identification + * Daniel T. Cobra : Alernate config/mixer for later chips + * Alan Cox : Merged chip idents and config code + * + * TODO + * APM save restore assist code on IBM thinkpad + * + * Status: + * Tested. Believed fully functional. + */ + +#include <linux/config.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/stddef.h> +#include <linux/pm.h> +#include <linux/isapnp.h> +#include <linux/pnp.h> +#include <linux/spinlock.h> + +#define DEB(x) +#define DEB1(x) +#include "sound_config.h" + +#include "ad1848.h" +#include "ad1848_mixer.h" + +typedef struct +{ + spinlock_t lock; + int base; + int irq; + int dma1, dma2; + int dual_dma; /* 1, when two DMA channels allocated */ + int subtype; + unsigned char MCE_bit; + unsigned char saved_regs[64]; /* Includes extended register space */ + int debug_flag; + + int audio_flags; + int record_dev, playback_dev; + + int xfer_count; + int audio_mode; + int open_mode; + int intr_active; + char *chip_name, *name; + int model; +#define MD_1848 1 +#define MD_4231 2 +#define MD_4231A 3 +#define MD_1845 4 +#define MD_4232 5 +#define MD_C930 6 +#define MD_IWAVE 7 +#define MD_4235 8 /* Crystal Audio CS4235 */ +#define MD_1845_SSCAPE 9 /* Ensoniq Soundscape PNP*/ +#define MD_4236 10 /* 4236 and higher */ +#define MD_42xB 11 /* CS 42xB */ +#define MD_4239 12 /* CS4239 */ + + /* Mixer parameters */ + int recmask; + int supported_devices, orig_devices; + int supported_rec_devices, orig_rec_devices; + int *levels; + short mixer_reroute[32]; + int dev_no; + volatile unsigned long timer_ticks; + int timer_running; + int irq_ok; + mixer_ents *mix_devices; + int mixer_output_port; + + /* Power management */ + struct pm_dev *pmdev; +} ad1848_info; + +typedef struct ad1848_port_info +{ + int open_mode; + int speed; + unsigned char speed_bits; + int channels; + int audio_format; + unsigned char format_bits; +} +ad1848_port_info; + +static struct address_info cfg; +static int nr_ad1848_devs; + +static int deskpro_xl; +static int deskpro_m; +static int soundpro; + +static volatile signed char irq2dev[17] = { + -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1 +}; + +#ifndef EXCLUDE_TIMERS +static int timer_installed = -1; +#endif + +static int loaded; + +static int ad_format_mask[13 /*devc->model */ ] = +{ + 0, + AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW, + AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM, + AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM, + AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW, /* AD1845 */ + AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM, + AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM, + AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM, + AFMT_U8 | AFMT_S16_LE /* CS4235 */, + AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW /* Ensoniq Soundscape*/, + AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM, + AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM, + AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_S16_BE | AFMT_IMA_ADPCM +}; + +static ad1848_info adev_info[MAX_AUDIO_DEV]; + +#define io_Index_Addr(d) ((d)->base) +#define io_Indexed_Data(d) ((d)->base+1) +#define io_Status(d) ((d)->base+2) +#define io_Polled_IO(d) ((d)->base+3) + +static struct { + unsigned char flags; +#define CAP_F_TIMER 0x01 +} capabilities [10 /*devc->model */ ] = { + {0} + ,{0} /* MD_1848 */ + ,{CAP_F_TIMER} /* MD_4231 */ + ,{CAP_F_TIMER} /* MD_4231A */ + ,{CAP_F_TIMER} /* MD_1845 */ + ,{CAP_F_TIMER} /* MD_4232 */ + ,{0} /* MD_C930 */ + ,{CAP_F_TIMER} /* MD_IWAVE */ + ,{0} /* MD_4235 */ + ,{CAP_F_TIMER} /* MD_1845_SSCAPE */ +}; + +#ifdef CONFIG_PNP +static int isapnp = 1; +static int isapnpjump; +static int reverse; + +static int audio_activated; +#else +static int isapnp; +#endif + + + +static int ad1848_open(int dev, int mode); +static void ad1848_close(int dev); +static void ad1848_output_block(int dev, unsigned long buf, int count, int intrflag); +static void ad1848_start_input(int dev, unsigned long buf, int count, int intrflag); +static int ad1848_prepare_for_output(int dev, int bsize, int bcount); +static int ad1848_prepare_for_input(int dev, int bsize, int bcount); +static void ad1848_halt(int dev); +static void ad1848_halt_input(int dev); +static void ad1848_halt_output(int dev); +static void ad1848_trigger(int dev, int bits); +static int ad1848_pm_callback(struct pm_dev *dev, pm_request_t rqst, void *data); + +#ifndef EXCLUDE_TIMERS +static int ad1848_tmr_install(int dev); +static void ad1848_tmr_reprogram(int dev); +#endif + +static int ad_read(ad1848_info * devc, int reg) +{ + int x; + int timeout = 900000; + + while (timeout > 0 && inb(devc->base) == 0x80) /*Are we initializing */ + timeout--; + + if(reg < 32) + { + outb(((unsigned char) (reg & 0xff) | devc->MCE_bit), io_Index_Addr(devc)); + x = inb(io_Indexed_Data(devc)); + } + else + { + int xreg, xra; + + xreg = (reg & 0xff) - 32; + xra = (((xreg & 0x0f) << 4) & 0xf0) | 0x08 | ((xreg & 0x10) >> 2); + outb(((unsigned char) (23 & 0xff) | devc->MCE_bit), io_Index_Addr(devc)); + outb(((unsigned char) (xra & 0xff)), io_Indexed_Data(devc)); + x = inb(io_Indexed_Data(devc)); + } + + return x; +} + +static void ad_write(ad1848_info * devc, int reg, int data) +{ + int timeout = 900000; + + while (timeout > 0 && inb(devc->base) == 0x80) /* Are we initializing */ + timeout--; + + if(reg < 32) + { + outb(((unsigned char) (reg & 0xff) | devc->MCE_bit), io_Index_Addr(devc)); + outb(((unsigned char) (data & 0xff)), io_Indexed_Data(devc)); + } + else + { + int xreg, xra; + + xreg = (reg & 0xff) - 32; + xra = (((xreg & 0x0f) << 4) & 0xf0) | 0x08 | ((xreg & 0x10) >> 2); + outb(((unsigned char) (23 & 0xff) | devc->MCE_bit), io_Index_Addr(devc)); + outb(((unsigned char) (xra & 0xff)), io_Indexed_Data(devc)); + outb((unsigned char) (data & 0xff), io_Indexed_Data(devc)); + } +} + +static void wait_for_calibration(ad1848_info * devc) +{ + int timeout = 0; + + /* + * Wait until the auto calibration process has finished. + * + * 1) Wait until the chip becomes ready (reads don't return 0x80). + * 2) Wait until the ACI bit of I11 gets on and then off. + */ + + timeout = 100000; + while (timeout > 0 && inb(devc->base) == 0x80) + timeout--; + if (inb(devc->base) & 0x80) + printk(KERN_WARNING "ad1848: Auto calibration timed out(1).\n"); + + timeout = 100; + while (timeout > 0 && !(ad_read(devc, 11) & 0x20)) + timeout--; + if (!(ad_read(devc, 11) & 0x20)) + return; + + timeout = 80000; + while (timeout > 0 && (ad_read(devc, 11) & 0x20)) + timeout--; + if (ad_read(devc, 11) & 0x20) + if ( (devc->model != MD_1845) || (devc->model != MD_1845_SSCAPE)) + printk(KERN_WARNING "ad1848: Auto calibration timed out(3).\n"); +} + +static void ad_mute(ad1848_info * devc) +{ + int i; + unsigned char prev; + + /* + * Save old register settings and mute output channels + */ + + for (i = 6; i < 8; i++) + { + prev = devc->saved_regs[i] = ad_read(devc, i); + } + +} + +static void ad_unmute(ad1848_info * devc) +{ +} + +static void ad_enter_MCE(ad1848_info * devc) +{ + int timeout = 1000; + unsigned short prev; + + while (timeout > 0 && inb(devc->base) == 0x80) /*Are we initializing */ + timeout--; + + devc->MCE_bit = 0x40; + prev = inb(io_Index_Addr(devc)); + if (prev & 0x40) + { + return; + } + outb((devc->MCE_bit), io_Index_Addr(devc)); +} + +static void ad_leave_MCE(ad1848_info * devc) +{ + unsigned char prev, acal; + int timeout = 1000; + + while (timeout > 0 && inb(devc->base) == 0x80) /*Are we initializing */ + timeout--; + + acal = ad_read(devc, 9); + + devc->MCE_bit = 0x00; + prev = inb(io_Index_Addr(devc)); + outb((0x00), io_Index_Addr(devc)); /* Clear the MCE bit */ + + if ((prev & 0x40) == 0) /* Not in MCE mode */ + { + return; + } + outb((0x00), io_Index_Addr(devc)); /* Clear the MCE bit */ + if (acal & 0x08) /* Auto calibration is enabled */ + wait_for_calibration(devc); +} + +static int ad1848_set_recmask(ad1848_info * devc, int mask) +{ + unsigned char recdev; + int i, n; + unsigned long flags; + + mask &= devc->supported_rec_devices; + + /* Rename the mixer bits if necessary */ + for (i = 0; i < 32; i++) + { + if (devc->mixer_reroute[i] != i) + { + if (mask & (1 << i)) + { + mask &= ~(1 << i); + mask |= (1 << devc->mixer_reroute[i]); + } + } + } + + n = 0; + for (i = 0; i < 32; i++) /* Count selected device bits */ + if (mask & (1 << i)) + n++; + + spin_lock_irqsave(&devc->lock,flags); + if (!soundpro) { + if (n == 0) + mask = SOUND_MASK_MIC; + else if (n != 1) { /* Too many devices selected */ + mask &= ~devc->recmask; /* Filter out active settings */ + + n = 0; + for (i = 0; i < 32; i++) /* Count selected device bits */ + if (mask & (1 << i)) + n++; + + if (n != 1) + mask = SOUND_MASK_MIC; + } + switch (mask) { + case SOUND_MASK_MIC: + recdev = 2; + break; + + case SOUND_MASK_LINE: + case SOUND_MASK_LINE3: + recdev = 0; + break; + + case SOUND_MASK_CD: + case SOUND_MASK_LINE1: + recdev = 1; + break; + + case SOUND_MASK_IMIX: + recdev = 3; + break; + + default: + mask = SOUND_MASK_MIC; + recdev = 2; + } + + recdev <<= 6; + ad_write(devc, 0, (ad_read(devc, 0) & 0x3f) | recdev); + ad_write(devc, 1, (ad_read(devc, 1) & 0x3f) | recdev); + } else { /* soundpro */ + unsigned char val; + int set_rec_bit; + int j; + + for (i = 0; i < 32; i++) { /* For each bit */ + if ((devc->supported_rec_devices & (1 << i)) == 0) + continue; /* Device not supported */ + + for (j = LEFT_CHN; j <= RIGHT_CHN; j++) { + if (devc->mix_devices[i][j].nbits == 0) /* Inexistent channel */ + continue; + + /* + * This is tricky: + * set_rec_bit becomes 1 if the corresponding bit in mask is set + * then it gets flipped if the polarity is inverse + */ + set_rec_bit = ((mask & (1 << i)) != 0) ^ devc->mix_devices[i][j].recpol; + + val = ad_read(devc, devc->mix_devices[i][j].recreg); + val &= ~(1 << devc->mix_devices[i][j].recpos); + val |= (set_rec_bit << devc->mix_devices[i][j].recpos); + ad_write(devc, devc->mix_devices[i][j].recreg, val); + } + } + } + spin_unlock_irqrestore(&devc->lock,flags); + + /* Rename the mixer bits back if necessary */ + for (i = 0; i < 32; i++) + { + if (devc->mixer_reroute[i] != i) + { + if (mask & (1 << devc->mixer_reroute[i])) + { + mask &= ~(1 << devc->mixer_reroute[i]); + mask |= (1 << i); + } + } + } + devc->recmask = mask; + return mask; +} + +static void change_bits(ad1848_info * devc, unsigned char *regval, + unsigned char *muteval, int dev, int chn, int newval) +{ + unsigned char mask; + int shift; + int mute; + int mutemask; + int set_mute_bit; + + set_mute_bit = (newval == 0) ^ devc->mix_devices[dev][chn].mutepol; + + if (devc->mix_devices[dev][chn].polarity == 1) /* Reverse */ + newval = 100 - newval; + + mask = (1 << devc->mix_devices[dev][chn].nbits) - 1; + shift = devc->mix_devices[dev][chn].bitpos; + + if (devc->mix_devices[dev][chn].mutepos == 8) + { /* if there is no mute bit */ + mute = 0; /* No mute bit; do nothing special */ + mutemask = ~0; /* No mute bit; do nothing special */ + } + else + { + mute = (set_mute_bit << devc->mix_devices[dev][chn].mutepos); + mutemask = ~(1 << devc->mix_devices[dev][chn].mutepos); + } + + newval = (int) ((newval * mask) + 50) / 100; /* Scale it */ + *regval &= ~(mask << shift); /* Clear bits */ + *regval |= (newval & mask) << shift; /* Set new value */ + + *muteval &= mutemask; + *muteval |= mute; +} + +static int ad1848_mixer_get(ad1848_info * devc, int dev) +{ + if (!((1 << dev) & devc->supported_devices)) + return -EINVAL; + + dev = devc->mixer_reroute[dev]; + + return devc->levels[dev]; +} + +static void ad1848_mixer_set_channel(ad1848_info *devc, int dev, int value, int channel) +{ + int regoffs, muteregoffs; + unsigned char val, muteval; + unsigned long flags; + + regoffs = devc->mix_devices[dev][channel].regno; + muteregoffs = devc->mix_devices[dev][channel].mutereg; + val = ad_read(devc, regoffs); + + if (muteregoffs != regoffs) { + muteval = ad_read(devc, muteregoffs); + change_bits(devc, &val, &muteval, dev, channel, value); + } + else + change_bits(devc, &val, &val, dev, channel, value); + + spin_lock_irqsave(&devc->lock,flags); + ad_write(devc, regoffs, val); + devc->saved_regs[regoffs] = val; + if (muteregoffs != regoffs) { + ad_write(devc, muteregoffs, muteval); + devc->saved_regs[muteregoffs] = muteval; + } + spin_unlock_irqrestore(&devc->lock,flags); +} + +static int ad1848_mixer_set(ad1848_info * devc, int dev, int value) +{ + int left = value & 0x000000ff; + int right = (value & 0x0000ff00) >> 8; + int retvol; + + if (dev > 31) + return -EINVAL; + + if (!(devc->supported_devices & (1 << dev))) + return -EINVAL; + + dev = devc->mixer_reroute[dev]; + + if (devc->mix_devices[dev][LEFT_CHN].nbits == 0) + return -EINVAL; + + if (left > 100) + left = 100; + if (right > 100) + right = 100; + + if (devc->mix_devices[dev][RIGHT_CHN].nbits == 0) /* Mono control */ + right = left; + + retvol = left | (right << 8); + + /* Scale volumes */ + left = mix_cvt[left]; + right = mix_cvt[right]; + + devc->levels[dev] = retvol; + + /* + * Set the left channel + */ + ad1848_mixer_set_channel(devc, dev, left, LEFT_CHN); + + /* + * Set the right channel + */ + if (devc->mix_devices[dev][RIGHT_CHN].nbits == 0) + goto out; + ad1848_mixer_set_channel(devc, dev, right, RIGHT_CHN); + + out: + return retvol; +} + +static void ad1848_mixer_reset(ad1848_info * devc) +{ + int i; + char name[32]; + unsigned long flags; + + devc->mix_devices = &(ad1848_mix_devices[0]); + + sprintf(name, "%s_%d", devc->chip_name, nr_ad1848_devs); + + for (i = 0; i < 32; i++) + devc->mixer_reroute[i] = i; + + devc->supported_rec_devices = MODE1_REC_DEVICES; + + switch (devc->model) + { + case MD_4231: + case MD_4231A: + case MD_1845: + case MD_1845_SSCAPE: + devc->supported_devices = MODE2_MIXER_DEVICES; + break; + + case MD_C930: + devc->supported_devices = C930_MIXER_DEVICES; + devc->mix_devices = &(c930_mix_devices[0]); + break; + + case MD_IWAVE: + devc->supported_devices = MODE3_MIXER_DEVICES; + devc->mix_devices = &(iwave_mix_devices[0]); + break; + + case MD_42xB: + case MD_4239: + devc->mix_devices = &(cs42xb_mix_devices[0]); + devc->supported_devices = MODE3_MIXER_DEVICES; + break; + case MD_4232: + case MD_4235: + case MD_4236: + devc->supported_devices = MODE3_MIXER_DEVICES; + break; + + case MD_1848: + if (soundpro) { + devc->supported_devices = SPRO_MIXER_DEVICES; + devc->supported_rec_devices = SPRO_REC_DEVICES; + devc->mix_devices = &(spro_mix_devices[0]); + break; + } + + default: + devc->supported_devices = MODE1_MIXER_DEVICES; + } + + devc->orig_devices = devc->supported_devices; + devc->orig_rec_devices = devc->supported_rec_devices; + + devc->levels = load_mixer_volumes(name, default_mixer_levels, 1); + + for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) + { + if (devc->supported_devices & (1 << i)) + ad1848_mixer_set(devc, i, devc->levels[i]); + } + + ad1848_set_recmask(devc, SOUND_MASK_MIC); + + devc->mixer_output_port = devc->levels[31] | AUDIO_HEADPHONE | AUDIO_LINE_OUT; + + spin_lock_irqsave(&devc->lock,flags); + if (!soundpro) { + if (devc->mixer_output_port & AUDIO_SPEAKER) + ad_write(devc, 26, ad_read(devc, 26) & ~0x40); /* Unmute mono out */ + else + ad_write(devc, 26, ad_read(devc, 26) | 0x40); /* Mute mono out */ + } else { + /* + * From the "wouldn't it be nice if the mixer API had (better) + * support for custom stuff" category + */ + /* Enable surround mode and SB16 mixer */ + ad_write(devc, 16, 0x60); + } + spin_unlock_irqrestore(&devc->lock,flags); +} + +static int ad1848_mixer_ioctl(int dev, unsigned int cmd, void __user *arg) +{ + ad1848_info *devc = mixer_devs[dev]->devc; + int val; + + if (cmd == SOUND_MIXER_PRIVATE1) + { + if (get_user(val, (int __user *)arg)) + return -EFAULT; + + if (val != 0xffff) + { + unsigned long flags; + val &= (AUDIO_SPEAKER | AUDIO_HEADPHONE | AUDIO_LINE_OUT); + devc->mixer_output_port = val; + val |= AUDIO_HEADPHONE | AUDIO_LINE_OUT; /* Always on */ + devc->mixer_output_port = val; + spin_lock_irqsave(&devc->lock,flags); + if (val & AUDIO_SPEAKER) + ad_write(devc, 26, ad_read(devc, 26) & ~0x40); /* Unmute mono out */ + else + ad_write(devc, 26, ad_read(devc, 26) | 0x40); /* Mute mono out */ + spin_unlock_irqrestore(&devc->lock,flags); + } + val = devc->mixer_output_port; + return put_user(val, (int __user *)arg); + } + if (cmd == SOUND_MIXER_PRIVATE2) + { + if (get_user(val, (int __user *)arg)) + return -EFAULT; + return(ad1848_control(AD1848_MIXER_REROUTE, val)); + } + if (((cmd >> 8) & 0xff) == 'M') + { + if (_SIOC_DIR(cmd) & _SIOC_WRITE) + { + switch (cmd & 0xff) + { + case SOUND_MIXER_RECSRC: + if (get_user(val, (int __user *)arg)) + return -EFAULT; + val = ad1848_set_recmask(devc, val); + break; + + default: + if (get_user(val, (int __user *)arg)) + return -EFAULT; + val = ad1848_mixer_set(devc, cmd & 0xff, val); + break; + } + return put_user(val, (int __user *)arg); + } + else + { + switch (cmd & 0xff) + { + /* + * Return parameters + */ + + case SOUND_MIXER_RECSRC: + val = devc->recmask; + break; + + case SOUND_MIXER_DEVMASK: + val = devc->supported_devices; + break; + + case SOUND_MIXER_STEREODEVS: + val = devc->supported_devices; + if (devc->model != MD_C930) + val &= ~(SOUND_MASK_SPEAKER | SOUND_MASK_IMIX); + break; + + case SOUND_MIXER_RECMASK: + val = devc->supported_rec_devices; + break; + + case SOUND_MIXER_CAPS: + val=SOUND_CAP_EXCL_INPUT; + break; + + default: + val = ad1848_mixer_get(devc, cmd & 0xff); + break; + } + return put_user(val, (int __user *)arg); + } + } + else + return -EINVAL; +} + +static int ad1848_set_speed(int dev, int arg) +{ + ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc; + ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc; + + /* + * The sampling speed is encoded in the least significant nibble of I8. The + * LSB selects the clock source (0=24.576 MHz, 1=16.9344 MHz) and other + * three bits select the divisor (indirectly): + * + * The available speeds are in the following table. Keep the speeds in + * the increasing order. + */ + typedef struct + { + int speed; + unsigned char bits; + } + speed_struct; + + static speed_struct speed_table[] = + { + {5510, (0 << 1) | 1}, + {5510, (0 << 1) | 1}, + {6620, (7 << 1) | 1}, + {8000, (0 << 1) | 0}, + {9600, (7 << 1) | 0}, + {11025, (1 << 1) | 1}, + {16000, (1 << 1) | 0}, + {18900, (2 << 1) | 1}, + {22050, (3 << 1) | 1}, + {27420, (2 << 1) | 0}, + {32000, (3 << 1) | 0}, + {33075, (6 << 1) | 1}, + {37800, (4 << 1) | 1}, + {44100, (5 << 1) | 1}, + {48000, (6 << 1) | 0} + }; + + int i, n, selected = -1; + + n = sizeof(speed_table) / sizeof(speed_struct); + + if (arg <= 0) + return portc->speed; + + if (devc->model == MD_1845 || devc->model == MD_1845_SSCAPE) /* AD1845 has different timer than others */ + { + if (arg < 4000) + arg = 4000; + if (arg > 50000) + arg = 50000; + + portc->speed = arg; + portc->speed_bits = speed_table[3].bits; + return portc->speed; + } + if (arg < speed_table[0].speed) + selected = 0; + if (arg > speed_table[n - 1].speed) + selected = n - 1; + + for (i = 1 /*really */ ; selected == -1 && i < n; i++) + { + if (speed_table[i].speed == arg) + selected = i; + else if (speed_table[i].speed > arg) + { + int diff1, diff2; + + diff1 = arg - speed_table[i - 1].speed; + diff2 = speed_table[i].speed - arg; + + if (diff1 < diff2) + selected = i - 1; + else + selected = i; + } + } + if (selected == -1) + { + printk(KERN_WARNING "ad1848: Can't find speed???\n"); + selected = 3; + } + portc->speed = speed_table[selected].speed; + portc->speed_bits = speed_table[selected].bits; + return portc->speed; +} + +static short ad1848_set_channels(int dev, short arg) +{ + ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc; + + if (arg != 1 && arg != 2) + return portc->channels; + + portc->channels = arg; + return arg; +} + +static unsigned int ad1848_set_bits(int dev, unsigned int arg) +{ + ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc; + ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc; + + static struct format_tbl + { + int format; + unsigned char bits; + } + format2bits[] = + { + { + 0, 0 + } + , + { + AFMT_MU_LAW, 1 + } + , + { + AFMT_A_LAW, 3 + } + , + { + AFMT_IMA_ADPCM, 5 + } + , + { + AFMT_U8, 0 + } + , + { + AFMT_S16_LE, 2 + } + , + { + AFMT_S16_BE, 6 + } + , + { + AFMT_S8, 0 + } + , + { + AFMT_U16_LE, 0 + } + , + { + AFMT_U16_BE, 0 + } + }; + int i, n = sizeof(format2bits) / sizeof(struct format_tbl); + + if (arg == 0) + return portc->audio_format; + + if (!(arg & ad_format_mask[devc->model])) + arg = AFMT_U8; + + portc->audio_format = arg; + + for (i = 0; i < n; i++) + if (format2bits[i].format == arg) + { + if ((portc->format_bits = format2bits[i].bits) == 0) + return portc->audio_format = AFMT_U8; /* Was not supported */ + + return arg; + } + /* Still hanging here. Something must be terribly wrong */ + portc->format_bits = 0; + return portc->audio_format = AFMT_U8; +} + +static struct audio_driver ad1848_audio_driver = +{ + .owner = THIS_MODULE, + .open = ad1848_open, + .close = ad1848_close, + .output_block = ad1848_output_block, + .start_input = ad1848_start_input, + .prepare_for_input = ad1848_prepare_for_input, + .prepare_for_output = ad1848_prepare_for_output, + .halt_io = ad1848_halt, + .halt_input = ad1848_halt_input, + .halt_output = ad1848_halt_output, + .trigger = ad1848_trigger, + .set_speed = ad1848_set_speed, + .set_bits = ad1848_set_bits, + .set_channels = ad1848_set_channels +}; + +static struct mixer_operations ad1848_mixer_operations = +{ + .owner = THIS_MODULE, + .id = "SOUNDPORT", + .name = "AD1848/CS4248/CS4231", + .ioctl = ad1848_mixer_ioctl +}; + +static int ad1848_open(int dev, int mode) +{ + ad1848_info *devc; + ad1848_port_info *portc; + unsigned long flags; + + if (dev < 0 || dev >= num_audiodevs) + return -ENXIO; + + devc = (ad1848_info *) audio_devs[dev]->devc; + portc = (ad1848_port_info *) audio_devs[dev]->portc; + + /* here we don't have to protect against intr */ + spin_lock(&devc->lock); + if (portc->open_mode || (devc->open_mode & mode)) + { + spin_unlock(&devc->lock); + return -EBUSY; + } + devc->dual_dma = 0; + + if (audio_devs[dev]->flags & DMA_DUPLEX) + { + devc->dual_dma = 1; + } + devc->intr_active = 0; + devc->audio_mode = 0; + devc->open_mode |= mode; + portc->open_mode = mode; + spin_unlock(&devc->lock); + ad1848_trigger(dev, 0); + + if (mode & OPEN_READ) + devc->record_dev = dev; + if (mode & OPEN_WRITE) + devc->playback_dev = dev; +/* + * Mute output until the playback really starts. This decreases clicking (hope so). + */ + spin_lock_irqsave(&devc->lock,flags); + ad_mute(devc); + spin_unlock_irqrestore(&devc->lock,flags); + + return 0; +} + +static void ad1848_close(int dev) +{ + unsigned long flags; + ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc; + ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc; + + DEB(printk("ad1848_close(void)\n")); + + devc->intr_active = 0; + ad1848_halt(dev); + + spin_lock_irqsave(&devc->lock,flags); + + devc->audio_mode = 0; + devc->open_mode &= ~portc->open_mode; + portc->open_mode = 0; + + ad_unmute(devc); + spin_unlock_irqrestore(&devc->lock,flags); +} + +static void ad1848_output_block(int dev, unsigned long buf, int count, int intrflag) +{ + unsigned long flags, cnt; + ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc; + ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc; + + cnt = count; + + if (portc->audio_format == AFMT_IMA_ADPCM) + { + cnt /= 4; + } + else + { + if (portc->audio_format & (AFMT_S16_LE | AFMT_S16_BE)) /* 16 bit data */ + cnt >>= 1; + } + if (portc->channels > 1) + cnt >>= 1; + cnt--; + + if ((devc->audio_mode & PCM_ENABLE_OUTPUT) && (audio_devs[dev]->flags & DMA_AUTOMODE) && + intrflag && + cnt == devc->xfer_count) + { + devc->audio_mode |= PCM_ENABLE_OUTPUT; + devc->intr_active = 1; + return; /* + * Auto DMA mode on. No need to react + */ + } + spin_lock_irqsave(&devc->lock,flags); + + ad_write(devc, 15, (unsigned char) (cnt & 0xff)); + ad_write(devc, 14, (unsigned char) ((cnt >> 8) & 0xff)); + + devc->xfer_count = cnt; + devc->audio_mode |= PCM_ENABLE_OUTPUT; + devc->intr_active = 1; + spin_unlock_irqrestore(&devc->lock,flags); +} + +static void ad1848_start_input(int dev, unsigned long buf, int count, int intrflag) +{ + unsigned long flags, cnt; + ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc; + ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc; + + cnt = count; + if (portc->audio_format == AFMT_IMA_ADPCM) + { + cnt /= 4; + } + else + { + if (portc->audio_format & (AFMT_S16_LE | AFMT_S16_BE)) /* 16 bit data */ + cnt >>= 1; + } + if (portc->channels > 1) + cnt >>= 1; + cnt--; + + if ((devc->audio_mode & PCM_ENABLE_INPUT) && (audio_devs[dev]->flags & DMA_AUTOMODE) && + intrflag && + cnt == devc->xfer_count) + { + devc->audio_mode |= PCM_ENABLE_INPUT; + devc->intr_active = 1; + return; /* + * Auto DMA mode on. No need to react + */ + } + spin_lock_irqsave(&devc->lock,flags); + + if (devc->model == MD_1848) + { + ad_write(devc, 15, (unsigned char) (cnt & 0xff)); + ad_write(devc, 14, (unsigned char) ((cnt >> 8) & 0xff)); + } + else + { + ad_write(devc, 31, (unsigned char) (cnt & 0xff)); + ad_write(devc, 30, (unsigned char) ((cnt >> 8) & 0xff)); + } + + ad_unmute(devc); + + devc->xfer_count = cnt; + devc->audio_mode |= PCM_ENABLE_INPUT; + devc->intr_active = 1; + spin_unlock_irqrestore(&devc->lock,flags); +} + +static int ad1848_prepare_for_output(int dev, int bsize, int bcount) +{ + int timeout; + unsigned char fs, old_fs, tmp = 0; + unsigned long flags; + ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc; + ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc; + + ad_mute(devc); + + spin_lock_irqsave(&devc->lock,flags); + fs = portc->speed_bits | (portc->format_bits << 5); + + if (portc->channels > 1) + fs |= 0x10; + + ad_enter_MCE(devc); /* Enables changes to the format select reg */ + + if (devc->model == MD_1845 || devc->model == MD_1845_SSCAPE) /* Use alternate speed select registers */ + { + fs &= 0xf0; /* Mask off the rate select bits */ + + ad_write(devc, 22, (portc->speed >> 8) & 0xff); /* Speed MSB */ + ad_write(devc, 23, portc->speed & 0xff); /* Speed LSB */ + } + old_fs = ad_read(devc, 8); + + if (devc->model == MD_4232 || devc->model >= MD_4236) + { + tmp = ad_read(devc, 16); + ad_write(devc, 16, tmp | 0x30); + } + if (devc->model == MD_IWAVE) + ad_write(devc, 17, 0xc2); /* Disable variable frequency select */ + + ad_write(devc, 8, fs); + + /* + * Write to I8 starts resynchronization. Wait until it completes. + */ + + timeout = 0; + while (timeout < 100 && inb(devc->base) != 0x80) + timeout++; + timeout = 0; + while (timeout < 10000 && inb(devc->base) == 0x80) + timeout++; + + if (devc->model >= MD_4232) + ad_write(devc, 16, tmp & ~0x30); + + ad_leave_MCE(devc); /* + * Starts the calibration process. + */ + spin_unlock_irqrestore(&devc->lock,flags); + devc->xfer_count = 0; + +#ifndef EXCLUDE_TIMERS + if (dev == timer_installed && devc->timer_running) + if ((fs & 0x01) != (old_fs & 0x01)) + { + ad1848_tmr_reprogram(dev); + } +#endif + ad1848_halt_output(dev); + return 0; +} + +static int ad1848_prepare_for_input(int dev, int bsize, int bcount) +{ + int timeout; + unsigned char fs, old_fs, tmp = 0; + unsigned long flags; + ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc; + ad1848_port_info *portc = (ad1848_port_info *) audio_devs[dev]->portc; + + if (devc->audio_mode) + return 0; + + spin_lock_irqsave(&devc->lock,flags); + fs = portc->speed_bits | (portc->format_bits << 5); + + if (portc->channels > 1) |