diff options
Diffstat (limited to 'sys/i386/isa/sound/ad1848.c')
| -rw-r--r-- | sys/i386/isa/sound/ad1848.c | 1867 |
1 files changed, 0 insertions, 1867 deletions
diff --git a/sys/i386/isa/sound/ad1848.c b/sys/i386/isa/sound/ad1848.c deleted file mode 100644 index b75b302..0000000 --- a/sys/i386/isa/sound/ad1848.c +++ /dev/null @@ -1,1867 +0,0 @@ -/* - * sound/ad1848.c - * - * Modified by Luigi Rizzo (luigi@iet.unipi.it) - * - * 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. - * - * CS4236 is also a PnP audio chip similar to the 4232 - * - * OPTi931 is another high-end 1848-type chip. It differs in the use - * of the high 16 registers and configuration stuff. Luckily, being a - * PnP device, we can avoid black magic to identify the chip and be - * sure of its identity. - * - * Copyright by Hannu Savolainen 1994, 1995 - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. 2. - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR - * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER - * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * Modified: Riccardo Facchetti 24 Mar 1995 - Added the Audio Excel DSP 16 - * initialization routine. - * - * $FreeBSD$ - */ - -#define DEB(x) -#define DEB1(x) -#include <i386/isa/sound/sound_config.h> - -#if defined(CONFIG_AD1848) - -#include <i386/isa/sound/ad1848_mixer.h> -#include <i386/isa/sound/iwdefs.h> - -#if defined(CONFIG_CS4232) -extern struct isa_driver cssdriver; -#else -extern struct isa_driver mssdriver; -#endif - -extern void IwaveStopDma(BYTE path); - -typedef struct { - int base; - int irq; - int dual_dma; /* 1, when two DMA channels allocated */ - u_char MCE_bit; - u_char saved_regs[16]; - - int speed; - u_char speed_bits; - int channels; - int audio_format; - u_char format_bits; - - u_long xfer_count; - int irq_mode; - int intr_active; - int opened; - char *chip_name; - int mode; -#define MD_1848 1 -#define MD_4231 2 -#define MD_4231A 3 -#define MD_4236 4 -#define MD_1845 5 -#define MD_MAXMODE 6 - - /* Mixer parameters */ - int recmask; - int supported_devices; - int supported_rec_devices; - u_short levels[32]; - int dev_no; - volatile u_long timer_ticks; - int timer_running; - int irq_ok; - sound_os_info *osp; -} ad1848_info; - -static int nr_ad1848_devs = 0; -static volatile char irq2dev[17] = - {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1}; - -static int timer_installed = -1; -static int mute_flag = 0; -static char mixer2codec[MAX_MIXER_DEV] = {0}; - -static int ad_format_mask[MD_MAXMODE /* devc->mode */ ] = -{ - /* 0 - none */ 0, - /* 1 - AD1848 */ AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW, - - /* - * AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_U16_LE | - * AFMT_IMA_ADPCM, - */ - - /* 2 - CS4231 */ AFMT_U8 | AFMT_S16_LE | AFMT_U16_LE, - - /* - * AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW | AFMT_U16_LE | - * AFMT_IMA_ADPCM, - */ - - /* 3 - CS4231A */ AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW, - /* 4 - AD1845 */ AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW, - /* 5 - CS4236 */ AFMT_U8 | AFMT_S16_LE | AFMT_MU_LAW | AFMT_A_LAW, -}; - -static ad1848_info dev_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 int ad1848_open(int dev, int mode); -static void ad1848_close(int dev); -static int ad1848_ioctl(int dev, u_int cmd, ioctl_arg arg, int local); -static void ad1848_output_block(int dev, u_long buf, int count, int intrflag, int dma_restart); -static void ad1848_start_input(int dev, u_long buf, int count, int intrflag, int dma_restart); -static int ad1848_prepare_for_IO(int dev, int bsize, int bcount); -static void ad1848_reset(int dev); -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_tmr_install(int dev); -static void ad1848_tmr_reprogram(int dev); - -/* - * AD_WAIT_INIT waits if we are initializing the board and we cannot modify - * its settings - */ -#define AD_WAIT_INIT(x) {int t=x; while(t>0 && inb(devc->base) == 0x80) t-- ; } - -short ipri_to_irq(u_short ipri); - -void -adintr(unit) -{ -#if 1 - /* this isn't ideal but should work */ - ad1848_interrupt(-1); -#else - static short unit_to_irq[4] = {9, -1, -1, -1}; - struct isa_device *dev; - - if (unit_to_irq[unit] > 0) - ad1848_interrupt(unit_to_irq[unit]); - else { -#if defined(CONFIG_CS4232) - dev = find_isadev(isa_devtab_null, &cssdriver, unit); -#else - dev = find_isadev(isa_devtab_null, &mssdriver, unit); -#endif - if (!dev) - printf("ad1848: Couldn't determine unit\n"); - else { - unit_to_irq[unit] = ipri_to_irq(dev->id_irq); - ad1848_interrupt(unit_to_irq[unit]); - } - } -#endif -} - -static int -ad_read(ad1848_info * devc, int reg) -{ - u_long flags; - int x; - - AD_WAIT_INIT(900000); - flags = splhigh(); - outb(io_Index_Addr(devc), (u_char) (reg & 0xff) | devc->MCE_bit); - x = inb(io_Indexed_Data(devc)); - splx(flags); - - return x; -} - -static void -ad_write(ad1848_info * devc, int reg, u_char data) -{ - u_long flags; - - AD_WAIT_INIT(90000); - - flags = splhigh(); - outb(io_Index_Addr(devc), (u_char) (reg & 0xff) | devc->MCE_bit); - outb(io_Indexed_Data(devc), (u_char) (data & 0xff)); - splx(flags); -} - -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. - */ - - AD_WAIT_INIT(100000); - if (inb(devc->base) & 0x80) - printf("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 = 20000; - while (timeout > 0 && ad_read(devc, 11) & 0x20) - timeout--; - if (ad_read(devc, 11) & 0x20) - printf("ad1848: Auto calibration timed out(3).\n"); -} - -static void -ad_mute(ad1848_info * devc) -{ - int i; - u_char prev; - - mute_flag = 1; - - /* - * Save old register settings and mute output channels - */ - for (i = 6; i < 8; i++) { - prev = devc->saved_regs[i] = ad_read(devc, i); - ad_write(devc, i, prev | 0x80); - } -} - -static void -ad_unmute(ad1848_info * devc) -{ - int i; - - mute_flag = 0; - /* - * Restore back old volume registers (unmute) - */ - for (i = 6; i < 8; i++) - ad_write(devc, i, devc->saved_regs[i] & ~0x80); - } - -static void -ad_enter_MCE(ad1848_info * devc) -{ - u_long flags; - - AD_WAIT_INIT(1000); - devc->MCE_bit = 0x40; - flags = splhigh(); - if ( ( inb(io_Index_Addr(devc)) & 0x40) == 0 ) - outb(io_Index_Addr(devc), devc->MCE_bit); - splx(flags); -} - -static void -ad_leave_MCE(ad1848_info * devc) -{ - u_long flags; - u_char prev; - - AD_WAIT_INIT(1000); - - flags = splhigh(); - - devc->MCE_bit = 0x00; - prev = inb(io_Index_Addr(devc)); - /* XXX the next call is redundant ? */ - outb(io_Index_Addr(devc), 0x00); /* Clear the MCE bit */ - - if ((prev & 0x40) == 0) { /* Not in MCE mode */ - splx(flags); - return; - } - outb(io_Index_Addr(devc), 0x00); /* Clear the MCE bit */ - wait_for_calibration(devc); - splx(flags); -} - - -static int -ad1848_set_recmask(ad1848_info * devc, int mask) -{ - u_char recdev; - int i, n; - - mask &= devc->supported_rec_devices; - - n = 0; - for (i = 0; i < 32; i++)/* Count selected device bits */ - if (mask & (1 << i)) - n++; - - 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); - - devc->recmask = mask; - return mask; -} - -static void -change_bits(u_char *regval, int dev, int chn, int newval) -{ - u_char mask; - int shift; - - if (mix_devices[dev][chn].polarity == 1) /* Reverse */ - newval = 100 - newval; - - mask = (1 << mix_devices[dev][chn].nbits) - 1; - shift = mix_devices[dev][chn].bitpos; - newval = (int) ((newval * mask) + 50) / 100; /* Scale it */ - - *regval &= ~(mask << shift); /* Clear bits */ - *regval |= (newval & mask) << shift; /* Set new value */ -} - -static int -ad1848_mixer_get(ad1848_info * devc, int dev) -{ - if (!((1 << dev) & devc->supported_devices)) - return -(EINVAL); - - return devc->levels[dev]; -} - -#define CLMICI 0x00781601 -#define CRMICI 0x00791701 - -static int -ad1848_mixer_set(ad1848_info * devc, int dev, int value) -{ - int left = value & 0x000000ff; - int right = (value & 0x0000ff00) >> 8; - int retvol; - - int regoffs; - u_char val; - /* u_char clci, crmici, clmici, clici, crici; */ - - if (left > 100) - left = 100; - if (right > 100) - right = 100; - - if (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]; - - /* Scale it again */ - left = mix_cvt[left]; - right = mix_cvt[right]; - - if (dev > 31) - return -(EINVAL); - - if (!(devc->supported_devices & (1 << dev))) - return -(EINVAL); - - if (mix_devices[dev][LEFT_CHN].nbits == 0) - return -(EINVAL); - - devc->levels[dev] = retvol; - - /* - * Set the left channel - */ - /* IwaveCodecMode(CODEC_MODE3); Default codec mode */ - - regoffs = mix_devices[dev][LEFT_CHN].regno; - val = ad_read(devc, regoffs); - - change_bits(&val, dev, LEFT_CHN, left); - ad_write(devc, regoffs, val); - devc->saved_regs[regoffs] = val; - - /* - * Set the right channel - */ - - if (mix_devices[dev][RIGHT_CHN].nbits == 0) - return retvol; /* Was just a mono channel */ - - regoffs = mix_devices[dev][RIGHT_CHN].regno; - val = ad_read(devc, regoffs); - change_bits(&val, dev, RIGHT_CHN, right); - ad_write(devc, regoffs, val); - devc->saved_regs[regoffs] = val; - - return retvol; -} - -static void -ad1848_mixer_reset(ad1848_info * devc) -{ - int i; - - devc->recmask = 0; - if (devc->mode != MD_1848) - devc->supported_devices = MODE2_MIXER_DEVICES; - else - devc->supported_devices = MODE1_MIXER_DEVICES; - - devc->supported_rec_devices = MODE1_REC_DEVICES; - - for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) - if (devc->supported_devices & (1 << i)) - ad1848_mixer_set(devc, i, default_mixer_levels[i]); - ad1848_set_recmask(devc, SOUND_MASK_MIC); -} - -static int -ad1848_mixer_ioctl(int dev, u_int cmd, ioctl_arg arg) -{ - ad1848_info *devc; - int codec_dev = mixer2codec[dev]; - - if (!codec_dev) - return -(ENXIO); - - codec_dev--; - - devc = (ad1848_info *) audio_devs[codec_dev]->devc; - - if (((cmd >> 8) & 0xff) == 'M') { - if (cmd & IOC_IN) - switch (cmd & 0xff) { - case SOUND_MIXER_RECSRC: - return *(int *) arg = ad1848_set_recmask(devc, (*(int *) arg)); - break; - - default: - return *(int *) arg = ad1848_mixer_set(devc, cmd & 0xff, (*(int *) arg)); - } - else - switch (cmd & 0xff) { /* Return parameters */ - - case SOUND_MIXER_RECSRC: - return *(int *) arg = devc->recmask; - break; - - case SOUND_MIXER_DEVMASK: - return *(int *) arg = devc->supported_devices; - break; - - case SOUND_MIXER_STEREODEVS: - return *(int *) arg = devc->supported_devices & ~(SOUND_MASK_SPEAKER | SOUND_MASK_IMIX); - break; - - case SOUND_MIXER_RECMASK: - return *(int *) arg = devc->supported_rec_devices; - break; - - case SOUND_MIXER_CAPS: - return *(int *) arg = SOUND_CAP_EXCL_INPUT; - break; - - default: - return *(int *) arg = ad1848_mixer_get(devc, cmd & 0xff); - } - } else - return -(EINVAL); -} - -static struct audio_operations ad1848_pcm_operations[MAX_AUDIO_DEV] = -{ - { - "Generic AD1848 codec", - /* DMA_AUTOMODE | DMA_DUPLEX, */ - DMA_AUTOMODE, - AFMT_U8, /* Will be set later */ - NULL, - ad1848_open, - ad1848_close, - ad1848_output_block, - ad1848_start_input, - ad1848_ioctl, - ad1848_prepare_for_IO, - ad1848_prepare_for_IO, - ad1848_reset, - ad1848_halt, - NULL, - NULL, - ad1848_halt_input, - ad1848_halt_output, - ad1848_trigger - } -}; - -static struct mixer_operations ad1848_mixer_operations = -{ - "AD1848/CS4248/CS4231/CS4236", - ad1848_mixer_ioctl -}; - -static int -ad1848_open(int dev, int mode) -{ - ad1848_info *devc = NULL; - u_long flags; - int otherside = audio_devs[dev]->otherside; - - if (dev < 0 || dev >= num_audiodevs) - return -(ENXIO); - - if (otherside != -1) { - if (audio_devs[otherside]->busy) - return -(EBUSY); - } - if (audio_devs[dev]->busy) - return -(EBUSY); - - devc = (ad1848_info *) audio_devs[dev]->devc; - - flags = splhigh(); - if (audio_devs[dev]->busy) { - splx(flags); - return -(EBUSY); - } - devc->dual_dma = 0; - - if (audio_devs[dev]->flags & DMA_DUPLEX) { - devc->dual_dma = 1; - } - devc->intr_active = 0; - audio_devs[dev]->busy = 1; - devc->irq_mode = 0; - ad1848_trigger(dev, 0); - splx(flags); - /* - * Mute output until the playback really starts. This decreases - * clicking. - */ - ad_mute(devc); - - return 0; -} - -static void -ad1848_close(int dev) -{ - u_long flags; - ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc; - int otherside = audio_devs[dev]->otherside; - - if (otherside != -1) { - if (audio_devs[otherside]->busy) - return; - } - DEB(printf("ad1848_close(void)\n")); - - flags = splhigh(); - - ad_mute(devc); - - ad_write(devc, 9, ad_read(devc, 9) & ~0x1); - outb(io_Status(devc), 0); /* Clear interrupt status */ - /* - * ad_write (devc, 15,0); ad_write (devc, 14,0); - */ - devc->irq_mode &= ~PCM_ENABLE_OUTPUT; - - devc->intr_active = 0; - ad1848_reset(dev); - - devc->opened = 0; - devc->irq_mode = 0; - audio_devs[dev]->busy = 0; - ad_unmute(devc); - splx(flags); -} - -static int -set_speed(ad1848_info * devc, int arg) -{ - /* - * The sampling speed is encoded in the least significant nible 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; - u_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 (devc->mode == MD_1845) { /* AD1845 has different timer than others */ - RANGE (arg, 4000, 50000) ; - - devc->speed = arg; - devc->speed_bits = speed_table[selected].bits; - return devc->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) { - printf("ad1848: Can't find speed???\n"); - selected = 3; - } - devc->speed = speed_table[selected].speed; - devc->speed_bits = speed_table[selected].bits; - return devc->speed; -} - -static int -set_channels(ad1848_info * devc, int arg) -{ - if (arg != 1 && arg != 2) - return devc->channels; - - devc->channels = arg; - return arg; -} - -static int -set_format(ad1848_info * devc, int arg) -{ - static struct format_tbl { - int format; - u_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 & ad_format_mask[devc->mode])) - arg = AFMT_U8; - - devc->audio_format = arg; - - for (i = 0; i < n; i++) - if (format2bits[i].format == arg) { - if ((devc->format_bits = format2bits[i].bits) == 0) - return devc->audio_format = AFMT_U8; /* Was not supported */ - return arg; - } - /* Still hanging here. Something must be terribly wrong */ - devc->format_bits = 0; - return devc->audio_format = AFMT_U8; -} - -/* XXX check what is arg, (int) or *(int *) lr970705 */ -static int -ad1848_ioctl(int dev, u_int cmd, ioctl_arg arg, int local) -{ - ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc; - - switch (cmd) { - case SOUND_PCM_WRITE_RATE: - if (local) - return set_speed(devc, (int) arg); - return *(int *) arg = set_speed(devc, (*(int *) arg)); - - case SOUND_PCM_READ_RATE: - if (local) - return devc->speed; - return *(int *) arg = devc->speed; - - case SNDCTL_DSP_STEREO: - if (local) - return set_channels(devc, (int) arg + 1) - 1; - return *(int *) arg = set_channels(devc, (*(int *) arg) + 1) - 1; - - case SOUND_PCM_WRITE_CHANNELS: - if (local) - return set_channels(devc, (int) arg); - return *(int *) arg = set_channels(devc, (*(int *) arg)); - - case SOUND_PCM_READ_CHANNELS: - if (local) - return devc->channels; - return *(int *) arg = devc->channels; - - case SNDCTL_DSP_SAMPLESIZE: - if (local) - return set_format(devc, (int) arg); - return *(int *) arg = set_format(devc, (*(int *) arg)); - - case SOUND_PCM_READ_BITS: - if (local) - return devc->audio_format; - return *(int *) arg = devc->audio_format; - - - case FIOASYNC: - if (local) - return 1; - return *(int *) arg = 1; - - case FIONBIO: - if (local) - return 1; - return *(int *) arg = 1; - - - default:; - } - return -(EINVAL); -} - -static void -ad1848_output_block(int dev, u_long buf, int count, int intrflag, int dma_restart) -{ - u_long flags, cnt; - ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc; - - cnt = count; - if (devc->audio_format == AFMT_IMA_ADPCM) { - cnt /= 4; - } else { - if (devc->audio_format & (AFMT_S16_LE | AFMT_S16_BE)) /* 16 bit data */ - cnt >>= 1; - } - if (devc->channels > 1) - cnt >>= 1; - cnt--; - if (mute_flag) - ad_unmute(devc); - - if ( devc->irq_mode & PCM_ENABLE_OUTPUT && - audio_devs[dev]->flags & DMA_AUTOMODE && intrflag && - cnt == devc->xfer_count) { - devc->irq_mode |= PCM_ENABLE_OUTPUT; - devc->intr_active = 1; - - } - flags = splhigh(); - - if (dma_restart) { - - DMAbuf_start_dma(dev, buf, count, 1); - } - ad_write(devc, 15, (u_char) (cnt & 0xff)); - ad_write(devc, 14, (u_char) ((cnt >> 8) & 0xff)); - - devc->xfer_count = cnt; - devc->irq_mode |= PCM_ENABLE_OUTPUT; - devc->intr_active = 1; - splx(flags); -} - -static void -ad1848_start_input(int dev, u_long buf, int count, - int intrflag, int dma_restart) -{ - u_long flags, cnt; - ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc; - - cnt = count; - if (devc->audio_format == AFMT_IMA_ADPCM) - cnt /= 4; - else if (devc->audio_format & (AFMT_S16_LE | AFMT_S16_BE)) /* 16 bit data */ - cnt >>= 1; - if (devc->channels > 1) - cnt >>= 1; - cnt--; - - if ( devc->irq_mode & PCM_ENABLE_INPUT && - audio_devs[dev]->flags & DMA_AUTOMODE && intrflag && - cnt == devc->xfer_count) { - devc->irq_mode |= PCM_ENABLE_INPUT; - devc->intr_active = 1; - return; /* Auto DMA mode on. No need to react */ - } - flags = splhigh(); - - if (dma_restart) { - /* ad1848_halt (dev); */ - DMAbuf_start_dma(dev, buf, count, 0); - } - if (devc->mode == MD_1848 || !devc->dual_dma) {/* Single DMA chan. mode */ - ad_write(devc, 15, (u_char) (cnt & 0xff)); - ad_write(devc, 14, (u_char) ((cnt >> 8) & 0xff)); - } else { /* Dual DMA channel mode */ - ad_write(devc, 31, (u_char) (cnt & 0xff)); - ad_write(devc, 30, (u_char) ((cnt >> 8) & 0xff)); - } - - /* ad_write (devc, 9, ad_read (devc, 9) | 0x02); *//* Capture enable */ - ad_unmute(devc); - - devc->xfer_count = cnt; - devc->irq_mode |= PCM_ENABLE_INPUT; - devc->intr_active = 1; - splx(flags); -} - -static int -ad1848_prepare_for_IO(int dev, int bsize, int bcount) -{ - u_char fs, old_fs; - u_long flags; - ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc; - - if (devc->irq_mode) - return 0; - - fs = devc->speed_bits | (devc->format_bits << 5); - - if (devc->channels > 1) - fs |= 0x10; - old_fs = fs; - - flags = splhigh(); - - if (devc->mode == MD_1845) { /* Use alternate speed select regs */ - fs &= 0xf0; /* Mask off the rate select bits */ - - ad_write(devc, 22, (devc->speed >> 8) & 0xff); /* Speed MSB */ - ad_write(devc, 23, devc->speed & 0xff); /* Speed LSB */ - } - - ad_enter_MCE(devc); /* Enables changes to the format select reg */ - - ad_write(devc, 8, fs); - - /* - * Write to I8 starts resyncronization. Wait until it completes. - */ - AD_WAIT_INIT(10000); - - /* - * If mode == 2 (CS4231), set I28 also. It's the capture format - * register. - */ - if (devc->mode != MD_1848) { - ad_write(devc, 28, fs); - - /* - * Write to I28 starts resyncronization. Wait until it completes. - */ - AD_WAIT_INIT(10000); - } - - ad_write(devc, 9, ad_read(devc, 9) & ~0x08); - - ad_leave_MCE(devc); - - splx(flags); - - devc->xfer_count = 0; -#ifdef CONFIG_SEQUENCER - if (dev == timer_installed && devc->timer_running) - if ((fs & 0x01) != (old_fs & 0x01)) { - ad1848_tmr_reprogram(dev); - } -#endif - return 0; -} - -static void -ad1848_reset(int dev) -{ - ad1848_halt(dev); -} - -static void -ad1848_halt(int dev) -{ - ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc; - u_long flags; - int timeout; - - flags = splhigh(); - - ad_mute(devc); - - ad_write(devc, 9, ad_read(devc, 9) & ~0x03); /* Stop DMA */ - - ad_write(devc, 14, 0); /* Clear DMA counter */ - ad_write(devc, 15, 0); /* Clear DMA counter */ - - if (devc->mode != MD_1848) { - ad_write(devc, 30, 0); /* Clear DMA counter */ - ad_write(devc, 31, 0); /* Clear DMA counter */ - } - - for (timeout = 0; timeout < 1000 && !(inb(io_Status(devc)) & 0x01); - timeout++); /* Wait for interrupt */ - - outb(io_Status(devc), 0); /* Clear interrupt status */ - - devc->irq_mode = 0; - - /* DMAbuf_reset_dma (dev); */ - splx(flags); -} - -static void -ad1848_halt_input(int dev) -{ - ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc; - u_long flags; - u_char playing; - if (devc->mode == MD_1848) { - ad1848_halt(dev); - return; - } - playing = ad_read(devc, 9); - if (!(playing & 0x2)) - return; - - flags = splhigh(); - - ad_mute(devc); - ad_write(devc, 9, playing & ~0x02); /* Stop capture */ - - outb(io_Status(devc), 0); /* Clear interrupt status */ - outb(io_Status(devc), 0); /* Clear interrupt status */ - - devc->irq_mode &= ~PCM_ENABLE_INPUT; - - splx(flags); -} - -static void -ad1848_halt_output(int dev) -{ - ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc; - u_long flags; - u_char playing; - - playing = ad_read(devc, 9); - if (!(playing & 0x1)) { - devc->irq_mode &= ~PCM_ENABLE_OUTPUT; - return; - } - /* IwaveStopDma(PLAYBACK); */ - if (devc->mode == MD_1848) { - ad1848_halt(dev); - return; - } - flags = splhigh(); - /* ad_mute (devc); */ - - ad_write(devc, 9, playing & ~0x1); - outb(io_Status(devc), 0); /* Clear interrupt status */ - /* - * ad_write (devc, 15,0); ad_write (devc, 14,0); - */ - devc->irq_mode &= ~PCM_ENABLE_OUTPUT; - - splx(flags); -} - -static void -ad1848_trigger(int dev, int state) -{ - ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc; - u_long flags; - u_char tmp; - - flags = splhigh(); - state &= devc->irq_mode; - - tmp = ad_read(devc, 9) & ~0x03; - if (state & PCM_ENABLE_INPUT) - tmp |= 0x02; - if (state & PCM_ENABLE_OUTPUT) { - tmp |= 0x01; - } - ad_write(devc, 9, tmp); - - splx(flags); -} - - -int -ad1848_detect(int io_base, int *ad_flags, sound_os_info * osp) -{ - static int last_probe_addr=0, last_result=0; /* to avoid multiple probes*/ - int i; - ad1848_info *devc = &dev_info[nr_ad1848_devs]; - u_char tmp, tmp1, tmp2 ; - - DDB(printf("ad1848_detect(%x)\n", io_base)); - if (io_base == last_probe_addr) - return last_result; - else { - last_result = 0; /* default value for detect */ - last_probe_addr = io_base ; - } - - if (ad_flags) - *ad_flags = 0; - - if (nr_ad1848_devs >= MAX_AUDIO_DEV) { - DDB(printf("ad1848 detect error - step 0\n")); - return 0 ; - } - devc->base = io_base; - devc->irq_ok = 0; - devc->timer_running = 0; - devc->MCE_bit = 0x40; - devc->irq = 0; - devc->opened = 0; - devc->chip_name = "AD1848"; - devc->mode = MD_1848; /* AD1848 or CS4248 */ - devc->osp = osp; - - /* - * Check that the I/O address is in use. - * - * The bit 0x80 of the base I/O port is known to be 0 after the chip has - * performed its power on initialization. Just assume this has - * happened before the OS is starting. - * - * If the I/O address is unused, it typically returns 0xff. - */ - - DDB(printf("ad1848_detect() - step A\n")); - - if ((inb(devc->base) & 0x80) != 0x00) { /* Not a AD1848 */ - DDB(printf("ad1848 detect error - step A," - " inb(base) = 0x%02x, want 0XXX.XXXX\n", - inb(devc->base))); - return 0; - } - /* - * Test if it's possible to change contents of the indirect - * registers. Registers 0 and 1 are ADC volume registers. The bit - * 0x10 is read only so try to avoid using it. - */ - - DDB(printf("ad1848_detect() - step B, test indirect register\n")); - - ad_write(devc, 0, 0xaa); - ad_write(devc, 1, 0x45);/* 0x55 with bit 0x10 clear */ - tmp1 = ad_read(devc, 0) ; - tmp2 = ad_read(devc, 1) ; - if ( tmp1 != 0xaa || tmp2 != 0x45) { - DDB(printf("ad1848 detect error - step B (0x%02x/0x%02x) want 0xaa/0x45\n", tmp1, tmp2)); - return 0; - } - DDB(printf("ad1848_detect() - step C\n")); - ad_write(devc, 0, 0x45); - ad_write(devc, 1, 0xaa); - tmp1 = ad_read(devc, 0) ; - tmp2 = ad_read(devc, 1) ; - - if (tmp1 != 0x45 || tmp2 != 0xaa) { - DDB(printf("ad1848 detect error - step C (%x/%x)\n", tmp1, tmp2)); - - return 0; - } - /* - * The indirect register I12 has some read only bits. Lets try to - * change them. - */ - - DDB(printf("ad1848_detect() - step D, last 4 bits of I12 readonly\n")); - tmp = ad_read(devc, 12); - ad_write(devc, 12, (~tmp) & 0x0f); - tmp1 = ad_read(devc, 12); - - if ((tmp & 0x0f) != (tmp1 & 0x0f)) { - DDB(printf("ad1848 detect error - step D, I12 (0x%02x was 0x%02x)\n", - tmp1, tmp)); - return 0; - } - - /* - * NOTE! Last 4 bits of the reg I12 tell the chip revision. - * 0x01=RevB - * 0x0A=RevC. also CS4231/CS4231A and OPTi931 - */ - - - /* - * The original AD1848/CS4248 has just 15 indirect registers. This - * means that I0 and I16 should return the same value (etc.). Ensure - * that the Mode2 enable bit of I12 is 0. Otherwise this test fails - * with CS4231. - */ - - DDB(printf("ad1848_detect() - step F\n")); - ad_write(devc, 12, 0); /* Mode2=disabled */ - - for (i = 0; i < 16; i++) - if ((tmp1 = ad_read(devc, i)) != (tmp2 = ad_read(devc, i + 16))) { - DDB(printf("ad1848 detect warning - step F(I%d/0x%02x/0x%02x)\n", - i, tmp1, tmp2)); - /* - * note - this seems to fail on the 4232 on I11. So we just break - * rather than fail. - */ - break ; /* return 0; */ - } - /* - * Try to switch the chip to mode2 (CS4231) by setting the MODE2 bit - * (0x40). The bit 0x80 is always 1 in CS4248 and CS4231. - * - * On the OPTi931, however, I12 is readonly and only contains the - * chip revision ID (as in the CS4231A). The upper bits return 0. - */ - - DDB(printf("ad1848_detect() - step G\n")); - ad_write(devc, 12, 0x40); /* Set mode2, clear 0x80 */ - - tmp1 = ad_read(devc, 12); - if (tmp1 & 0x80) { - if (ad_flags) - *ad_flags |= AD_F_CS4248; - - devc->chip_name = "CS4248"; /* Our best knowledge just now */ - } - if ((tmp1 & 0xf0) == 0x00) { - printf("this should be an OPTi931\n"); - } else if ((tmp1 & 0xc0) == 0xC0) { - /* - * The 4231 has bit7=1 always, and bit6 we just set to 1. - * We want to check that this is really a CS4231 - * Verify that setting I0 doesn't change I16. - */ - DDB(printf("ad1848_detect() - step H\n")); - ad_write(devc, 16, 0); /* Set I16 to known value */ - - ad_write(devc, 0, 0x45); - if ((tmp1 = ad_read(devc, 16)) != 0x45) { /* No change -> CS4231? */ - - ad_write(devc, 0, 0xaa); - if ((tmp1 = ad_read(devc, 16)) == 0xaa) { /* Rotten bits? */ - DDB(printf("ad1848 detect error - step H(%x)\n", tmp1)); - return 0; - } - /* - * Verify that some bits of I25 are read only. - */ - - DDB(printf("ad1848_detect() - step I\n")); - tmp1 = ad_read(devc, 25); /* Original bits */ - ad_write(devc, 25, ~tmp1); /* Invert all bits */ - if ((ad_read(devc, 25) & 0xe7) == (tmp1 & 0xe7)) { - int id; - - /* - * It's at least CS4231 - */ - devc->chip_name = "CS4231"; - devc->mode = MD_4231; - - /* - * It could be an AD1845 or CS4231A as well. - * CS4231 and AD1845 report the same revision info in I25 - * while the CS4231A reports different. - */ - - DDB(printf("ad1848_detect() - step I\n")); - id = ad_read(devc, 25) & 0xe7; - /* - * b7-b5 = version number; - * 100 : all CS4231 - * 101 : CS4231A - * - * b2-b0 = chip id; - */ - switch (id) { - - case 0xa0: - devc->chip_name = "CS4231A"; - devc->mode = MD_4231A; - break; - - case 0xa2: - devc->chip_name = "CS4232"; - devc->mode = MD_4231A; - break; - - case 0xb2: - /* strange: the 4231 data sheet says b4-b3 are XX - * so this should be the same as 0xa2 - */ - devc->chip_name = "CS4232A"; - devc->mode = MD_4231A; - break; - - case 0x80: - /* - * It must be a CS4231 or AD1845. The register I23 - * of CS4231 is undefined and it appears to be read - * only. AD1845 uses I23 for setting sample rate. - * Assume the chip is AD1845 if I23 is changeable. - */ - - tmp = ad_read(devc, 23); - - ad_write(devc, 23, ~tmp); - if (ad_read(devc, 23) != tmp) { /* AD1845 ? */ - devc->chip_name = "AD1845"; - devc->mode = MD_1845; - } - ad_write(devc, 23, tmp); /* Restore */ - break; - - case 0x83: /* CS4236 */ - case 0x03: /* Mutant CS4236 on Intel PR440fx board */ - devc->chip_name = "CS4236"; - devc->mode = MD_4236; - break; - - default: /* Assume CS4231 */ - printf("unknown id 0x%02x, assuming CS4231\n", id); - devc->mode = MD_4231; - - } - } - ad_write(devc, 25, tmp1); /* Restore bits */ - - DDB(printf("ad1848_detect() - step K\n")); - } - } - DDB(printf("ad1848_detect() - step L\n")); - - if (ad_flags) { - if (devc->mode != MD_1848) - *ad_flags |= AD_F_CS4231; - } - DDB(printf("ad1848_detect() - Detected OK\n")); - return (last_result = 1); -} - -void -ad1848_init(char *name, int io_base, int irq, - int dma_playback, int dma_capture, int share_dma, sound_os_info * osp) -{ - - /* - * NOTE! If irq < 0, there is another driver which has allocated the - * IRQ so that this driver doesn't need to allocate/deallocate it. - * The actually used IRQ is ABS(irq). - */ - - /* - * Initial values for the indirect registers of CS4248/AD1848. - */ - static int init_values[] = { - 0xa8, /* MIXOUTL: src:mic, +20dB, gain +12dB */ - 0xa8, /* MIXOUTR: src:mic, +20dB, gain +12dB */ - 0x08, /* CDL Input: mute, +6dB */ - 0x08, /* CDR Input: mute, +6dB */ - 0x08, /* FML Input: mute, +6dB */ - 0x08, /* FMR Input: mute, +6dB */ - 0x80, /* DAC-L Input: enable, 0dB */ - 0x80, /* DAC-R Input: enable, 0dB */ - /* 0xa8, 0xa8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, */ - 0x00, /* 8bit, lin, uns, mono, 8KHz */ - 0x0c, /* dma-cap, dma-pb, autocal, single dma, disable cap/pb */ - 0x02, /* int enable */ - 0x00, /* clear error status */ - 0x8a, /* rev. id (low bytes readonly) */ - 0x00, - 0x00, /* playback upper base count */ - 0x00, /* playback lower base count */ - - /* Positions 16 to 31 just for CS4231 and newer devices */ - /* I16-I17: alt. feature enable on the 4231, but AUXL Input - * on the OPTi931 (where the features are set elsewhere - */ - 0x81, 0x00, 0x10, 0x10, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 - }; - int i, my_dev; - - ad1848_info *devc = &dev_info[nr_ad1848_devs]; - - if (!ad1848_detect(io_base, NULL, osp)) - return; - - devc->irq = (irq > 0) ? irq : 0; - devc->opened = 0; - devc->timer_ticks = 0; - devc->osp = osp; - - if (nr_ad1848_devs != 0) { - bcopy((char *) &ad1848_pcm_operations[0], - (char *) &ad1848_pcm_operations[nr_ad1848_devs], - sizeof(struct audio_operations)); - } - for (i = 0; i < 16; i++) - ad_write(devc, i, init_values[i]); - - ad_mute(devc); /* Initialize some variables */ - ad_unmute(devc); /* Leave it unmuted now */ - - if (devc->mode > MD_1848) { - if (dma_capture == dma_playback || - dma_capture == -1 || dma_playback == -1) { - ad_write(devc, 9, ad_read(devc, 9) | 0x04); /* Single DMA mode */ - ad1848_pcm_operations[nr_ad1848_devs].flags &= ~DMA_DUPLEX; - } else { - ad_write(devc, 9, ad_read(devc, 9) & ~0x04); /* Dual DMA mode */ - ad1848_pcm_operations[nr_ad1848_devs].flags |= DMA_DUPLEX; - } - - ad_write(devc, 12, ad_read(devc, 12) | 0x40); /* Mode2 = enabled */ - for (i = 16; i < 32; i++) - ad_write(devc, i, init_values[i]); - - if (devc->mode == MD_4231A) { - /* Enable full * calibration */ - ad_write(devc, 9, init_values[9] | 0x18); - } - - if (devc->mode == MD_1845) { - /* Alternate freq select enabled */ - ad_write(devc, 27, init_values[27] | 0x08); - } - } else { - ad1848_pcm_operations[nr_ad1848_devs].flags &= ~DMA_DUPLEX; - ad_write(devc, 9, ad_read(devc, 9) | 0x04); /* Single DMA mode */ - } - - outb(io_Status(devc), 0); /* Clear pending interrupts */ - - if (name != NULL && name[0] != 0) - snprintf(ad1848_pcm_operations[nr_ad1848_devs].name, - sizeof(ad1848_pcm_operations[nr_ad1848_devs].name), - "%s (%s)", name, devc->chip_name); - else - snprintf(ad1848_pcm_operations[nr_ad1848_devs].name, - sizeof(ad1848_pcm_operations[nr_ad1848_devs].name), - "Generic audio codec (%s)", devc->chip_name); - - conf_printf2(ad1848_pcm_operations[nr_ad1848_devs].name, - devc->base, devc->irq, dma_playback, dma_capture); - - - /* ad1848_pcm_operations[nr_ad1848_devs].flags |= DMA_AUTOMODE ; */ - - if (num_audiodevs < MAX_AUDIO_DEV) { - audio_devs[my_dev = num_audiodevs++] = - &ad1848_pcm_operations[nr_ad1848_devs]; - if (irq > 0) { - audio_devs[my_dev]->devc = devc; - irq2dev[irq] = my_dev; - if (snd_set_irq_handler(devc->irq, ad1848_interrupt, devc->osp)<0) { - printf("ad1848: IRQ in use\n"); - } -#ifdef NO_IRQ_TEST - if (devc->mode != MD_1848) { - int x; - u_char tmp = ad_read(devc, 16); - - devc->timer_ticks = 0; - - ad_write(devc, 21, 0x00); /* Timer msb */ - ad_write(devc, 20, 0x10); /* Timer lsb */ - - ad_write(devc, 16, tmp | 0x40); /* Enable timer */ - for (x = 0; x < 100000 && devc->timer_ticks == 0; x++); - ad_write(devc, 16, tmp & ~0x40); /* Disable timer */ - - if (devc->timer_ticks == 0) - printf("[IRQ conflict???]"); - else - devc->irq_ok = 1; - - } else - devc->irq_ok = 1; /* Couldn't test. assume it's OK */ -#else - devc->irq_ok = 1; -#endif - } else if (irq < 0) - irq2dev[-irq] = devc->dev_no = my_dev; - - audio_devs[my_dev]->otherside = -1 ; - audio_devs[my_dev]->flags |= DMA_AUTOMODE; - audio_devs[my_dev]->dmachan1 = dma_playback; - audio_devs[my_dev]->dmachan2 = dma_capture; - audio_devs[my_dev]->buffsize = DSP_BUFFSIZE; - audio_devs[my_dev]->devc = devc; - audio_devs[my_dev]->format_mask = ad_format_mask[devc->mode]; - nr_ad1848_devs++; - -#ifdef CONFIG_SEQUENCER - if (devc->mode != MD_1848 && devc->irq_ok) - ad1848_tmr_install(my_dev); -#endif - - /* - * Toggle the MCE bit. It completes the initialization phase. - */ - - ad_enter_MCE(devc); /* In case the bit was off */ - ad_leave_MCE(devc); - - if (num_mixers < MAX_MIXER_DEV) { - mixer2codec[num_mixers] = my_dev + 1; - audio_devs[my_dev]->mixer_dev = num_mixers; - mixer_devs[num_mixers++] = &ad1848_mixer_operations; - ad1848_mixer_reset(devc); - } - } else - printf("AD1848: Too many PCM devices available\n"); -} - -void -ad1848_interrupt(int irq) -{ - u_char status; - ad1848_info *devc; - int dev; - - if (irq < 0 || irq > 15) - dev = -1; - else - dev = irq2dev[irq]; - - if (dev < 0 || dev >= num_audiodevs) { - for (irq = 0; irq < 17; irq++) - if (irq2dev[irq] != -1) - break; - - if (irq > 15) { - printf("ad1848.c: Bogus interrupt %d\n", irq); - return; - } - dev = irq2dev[irq]; - } - devc = (ad1848_info *) audio_devs[dev]->devc; - - status = inb(io_Status(devc)); - - if (status & 0x01) { /* we have an interrupt */ - int alt_stat = 0xff ; - - if (devc->mode != MD_1848) { - /* - * high-end devices have full-duplex dma and timer. - * the exact reason for the interrupt is in reg. I24. - * For old devices, we fake the interrupt bits, and - * determine the real reason basing on the device mode. - */ - alt_stat = ad_read(devc, 24); - if (alt_stat & 0x40) { /* Timer interrupt */ - devc->timer_ticks++; -#ifdef CONFIG_SEQUENCER - if (timer_installed == dev && devc->timer_running) - sound_timer_interrupt(); -#endif - } - } - - outb(io_Status(devc), 0); /* Clear interrupt status */ - - if (audio_devs[dev]->busy) { - - if (devc->irq_mode & PCM_ENABLE_OUTPUT && alt_stat & 0x10) - DMAbuf_outputintr(dev, 1); - - if (devc->irq_mode & PCM_ENABLE_INPUT && alt_stat & 0x20) - DMAbuf_inputintr(dev); - } - } -} - -/* - * Some extra code for the MS Sound System - */ - -#ifdef amancio -void -check_opl3(int base, struct address_info * hw_config) -{ - - if (!opl3_detect(base, hw_config->osp)) - return; - - opl3_init(0, base, hw_config->osp); -} -#endif - -/* - * this is the probe routine. Note, it is not necessary to - * go through this for PnP devices, since they are already - * indentified precisely using their PnP id. - * - */ - -int -probe_mss(struct address_info * hw_config) -{ - u_char tmp; - - DDB(printf("Entered probe_mss(io 0x%x, type %d)\n", - hw_config->io_base, hw_config->card_subtype)); - - if (hw_config->card_subtype == 1) { /* Has no IRQ/DMA registers */ - /* check_opl3(0x388, hw_config); */ - goto probe_ms_end; - } - -#if defined(CONFIG_AEDSP16) && defined(AEDSP16_MSS) - /* - * Initialize Audio Excel DSP 16 to MSS: before any operation we must - * enable MSS I/O ports. - */ - InitAEDSP16_MSS(hw_config); -#endif - - /* - * Check if the IO port returns valid signature. The original MS - * Sound system returns 0x04 while some cards (AudioTriX Pro for - * example) return 0x00 or 0x0f. - */ - - if ((tmp = inb(hw_config->io_base + 3)) == 0xff) { /* Bus float */ - DDB(printf("I/O address inactive (%x), force type 1\n", tmp)); - hw_config->card_subtype = 1 ; - goto probe_ms_end; - } - - if ((tmp & 0x3f) != 0x04 && - (tmp & 0x3f) != 0x0f && - (tmp & 0x3f) != 0x00) { - DDB(printf("No MSS signature detected on port 0x%x (0x%x)\n", - hw_config->io_base, inb(hw_config->io_base + 3))); - return 0; - } - if (hw_config->irq > 11) { - printf("MSS: Bad IRQ %d\n", hw_config->irq); - return 0; - } - if (hw_config->dma != 0 && hw_config->dma != 1 && hw_config->dma != 3) { - printf("MSS: Bad DMA %d\n", hw_config->dma); - return 0; - } - /* - * Check that DMA0 is not in use with a 8 bit board. - */ - - if (hw_config->dma == 0 && inb(hw_config->io_base + 3) & 0x80) { - printf("MSS: Can't use DMA0 with a 8 bit card/slot\n"); - return 0; - } - if (hw_config->irq > 7 && hw_config->irq != 9 && - inb(hw_config->io_base + 3) & 0x80) { - printf("MSS: Can't use IRQ%d with a 8 bit card/slot\n", hw_config->irq); - return 0; - } -probe_ms_end: - return ad1848_detect(hw_config->io_base + 4, NULL, hw_config->osp); -} - -void -attach_mss(struct address_info * hw_config) -{ - -#if 0 - /* - * XXX do we really need to detect it again ? - lr970712 - */ - if (!ad1848_detect(hw_config->io_base + 4, NULL, hw_config->osp)) - return ; -#endif - - if (hw_config->card_subtype == 1) { /* Has no IRQ/DMA registers */ - ad1848_init("MS Sound System1", hw_config->io_base + 4, - hw_config->irq, - hw_config->dma, - hw_config->dma2, 0, hw_config->osp); - } else { - /* - * Set the IRQ and DMA addresses. - */ -#ifdef PC98 - static char interrupt_bits[13] = { - -1, -1, -1, 0x08, -1, 0x10, -1, -1, -1, -1, 0x18, -1, 0x20 - }; -#else - static char interrupt_bits[12] = { - -1, -1, -1, -1, -1, -1, -1, 0x08, -1, 0x10, 0x18, 0x20 - }; -#endif - static char dma_bits[4] = { - 1, 2, 0, 3 - }; - - int config_port = hw_config->io_base + 0; - int version_port = hw_config->io_base + 3; - char bits = interrupt_bits[hw_config->irq]; - - if (bits == -1) - return ; - -#ifndef PC98 - outb(config_port, bits | 0x40); - if ((inb(version_port) & 0x40) == 0) - printf("[IRQ Conflict?]"); -#endif - - /* Write IRQ+DMA setup */ - outb(config_port, bits | dma_bits[hw_config->dma]); - - ad1848_init("MS Sound System0", hw_config->io_base + 4, - hw_config->irq, - hw_config->dma, - hw_config->dma, 0, hw_config->osp); - } - return ; -} - -/* - * WSS compatible PnP codec support. - * XXX I doubt it works now - lr970712 - */ - -int -probe_pnp_ad1848(struct address_info * hw_config) -{ - return ad1848_detect(hw_config->io_base, NULL, hw_config->osp); -} - -void -attach_pnp_ad1848(struct address_info * hw_config) -{ - - ad1848_init(hw_config->name, hw_config->io_base, - hw_config->irq, - hw_config->dma, - hw_config->dma2, 0, hw_config->osp); -} - -#ifdef CONFIG_SEQUENCER -/* - * Timer stuff (for /dev/music). - */ - -static u_int current_interval = 0; - -static u_int -ad1848_tmr_start(int dev, u_int usecs) -{ - u_long flags; - ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc; - u_long xtal_nsecs; /* nanoseconds per xtal oscillaror tick */ - u_long divider; - - flags = splhigh(); - - /* - * Length of the timer interval (in nanoseconds) depends on the - * selected crystal oscillator. Check this from bit 0x01 of I8. - * - * AD1845 has just one oscillator which has cycle time of 10.050 us - * (when a 24.576 MHz xtal oscillator is used). - * - * Convert requested interval to nanoseconds before computing the timer - * divider. - */ - - if (devc->mode == MD_1845) - xtal_nsecs = 10050; - else if (ad_read(devc, 8) & 0x01) - xtal_nsecs = 9920; - else - xtal_nsecs = 9969; - - divider = (usecs * 1000 + xtal_nsecs / 2) / xtal_nsecs; - - if (divider < 100) /* Don't allow shorter intervals than about 1ms */ - divider = 100; - - if (divider > 65535) /* Overflow check */ - divider = 65535; - - ad_write(devc, 21, (divider >> 8) & 0xff); /* Set upper bits */ - ad_write(devc, 20, divider & 0xff); /* Set lower bits */ - ad_write(devc, 16, ad_read(devc, 16) | 0x40); /* Start the timer */ - devc->timer_running = 1; - splx(flags); - - return current_interval = (divider * xtal_nsecs + 500) / 1000; -} - -static void -ad1848_tmr_reprogram(int dev) -{ - /* - * Audio driver has changed sampling rate so that a different xtal - * oscillator was selected. We have to reprogram the timer rate. - */ - - ad1848_tmr_start(dev, current_interval); - sound_timer_syncinterval(current_interval); -} - -static void -ad1848_tmr_disable(int dev) -{ - u_long flags; - ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc; - - flags = splhigh(); - ad_write(devc, 16, ad_read(devc, 16) & ~0x40); - devc->timer_running = 0; - splx(flags); -} - -static void -ad1848_tmr_restart(int dev) -{ - u_long flags; - ad1848_info *devc = (ad1848_info *) audio_devs[dev]->devc; - - if (current_interval == 0) - return; - - flags = splhigh(); - ad_write(devc, 16, ad_read(devc, 16) | 0x40); - devc->timer_running = 1; - splx(flags); -} - -static struct sound_lowlev_timer ad1848_tmr = { - 0, - ad1848_tmr_start, - ad1848_tmr_disable, - ad1848_tmr_restart -}; - -static int -ad1848_tmr_install(int dev) -{ - if (timer_installed != -1) - return 0; /* Don't install another timer */ - - timer_installed = ad1848_tmr.dev = dev; - sound_timer_init(&ad1848_tmr, audio_devs[dev]->name); - - return 1; -} -#endif -#endif |
