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Diffstat (limited to 'sound/oss/sb_ess.c')
| -rw-r--r-- | sound/oss/sb_ess.c | 1822 |
1 files changed, 0 insertions, 1822 deletions
diff --git a/sound/oss/sb_ess.c b/sound/oss/sb_ess.c deleted file mode 100644 index 57f7d25a2cd3..000000000000 --- a/sound/oss/sb_ess.c +++ /dev/null @@ -1,1822 +0,0 @@ -#undef FKS_LOGGING -#undef FKS_TEST - -/* - * tabs should be 4 spaces, in vi(m): set tabstop=4 - * - * TODO: consistency speed calculations!! - * cleanup! - * ????: Did I break MIDI support? - * - * History: - * - * Rolf Fokkens (Dec 20 1998): ES188x recording level support on a per - * fokkensr@vertis.nl input basis. - * (Dec 24 1998): Recognition of ES1788, ES1887, ES1888, - * ES1868, ES1869 and ES1878. Could be used for - * specific handling in the future. All except - * ES1887 and ES1888 and ES688 are handled like - * ES1688. - * (Dec 27 1998): RECLEV for all (?) ES1688+ chips. ES188x now - * have the "Dec 20" support + RECLEV - * (Jan 2 1999): Preparation for Full Duplex. This means - * Audio 2 is now used for playback when dma16 - * is specified. The next step would be to use - * Audio 1 and Audio 2 at the same time. - * (Jan 9 1999): Put all ESS stuff into sb_ess.[ch], this - * includes both the ESS stuff that has been in - * sb_*[ch] before I touched it and the ESS support - * I added later - * (Jan 23 1999): Full Duplex seems to work. I wrote a small - * test proggy which works OK. Haven't found - * any applications to test it though. So why did - * I bother to create it anyway?? :) Just for - * fun. - * (May 2 1999): I tried to be too smart by "introducing" - * ess_calc_best_speed (). The idea was that two - * dividers could be used to setup a samplerate, - * ess_calc_best_speed () would choose the best. - * This works for playback, but results in - * recording problems for high samplerates. I - * fixed this by removing ess_calc_best_speed () - * and just doing what the documentation says. - * Andy Sloane (Jun 4 1999): Stole some code from ALSA to fix the playback - * andy@guildsoftware.com speed on ES1869, ES1879, ES1887, and ES1888. - * 1879's were previously ignored by this driver; - * added (untested) support for those. - * Cvetan Ivanov (Oct 27 1999): Fixed ess_dsp_init to call ess_set_dma_hw for - * zezo@inet.bg _ALL_ ESS models, not only ES1887 - * - * This files contains ESS chip specifics. It's based on the existing ESS - * handling as it resided in sb_common.c, sb_mixer.c and sb_audio.c. This - * file adds features like: - * - Chip Identification (as shown in /proc/sound) - * - RECLEV support for ES1688 and later - * - 6 bits playback level support chips later than ES1688 - * - Recording level support on a per-device basis for ES1887 - * - Full-Duplex for ES1887 - * - * Full duplex is enabled by specifying dma16. While the normal dma must - * be one of 0, 1 or 3, dma16 can be one of 0, 1, 3 or 5. DMA 5 is a 16 bit - * DMA channel, while the others are 8 bit.. - * - * ESS detection isn't full proof (yet). If it fails an additional module - * parameter esstype can be specified to be one of the following: - * -1, 0, 688, 1688, 1868, 1869, 1788, 1887, 1888 - * -1 means: mimic 2.0 behaviour, - * 0 means: auto detect. - * others: explicitly specify chip - * -1 is default, cause auto detect still doesn't work. - */ - -/* - * About the documentation - * - * I don't know if the chips all are OK, but the documentation is buggy. 'cause - * I don't have all the cips myself, there's a lot I cannot verify. I'll try to - * keep track of my latest insights about his here. If you have additional info, - * please enlighten me (fokkensr@vertis.nl)! - * - * I had the impression that ES1688 also has 6 bit master volume control. The - * documentation about ES1888 (rev C, october '95) claims that ES1888 has - * the following features ES1688 doesn't have: - * - 6 bit master volume - * - Full Duplex - * So ES1688 apparently doesn't have 6 bit master volume control, but the - * ES1688 does have RECLEV control. Makes me wonder: does ES688 have it too? - * Without RECLEV ES688 won't be much fun I guess. - * - * From the ES1888 (rev C, october '95) documentation I got the impression - * that registers 0x68 to 0x6e don't exist which means: no recording volume - * controls. To my surprise the ES888 documentation (1/14/96) claims that - * ES888 does have these record mixer registers, but that ES1888 doesn't have - * 0x69 and 0x6b. So the rest should be there. - * - * I'm trying to get ES1887 Full Duplex. Audio 2 is playback only, while Audio 2 - * is both record and playback. I think I should use Audio 2 for all playback. - * - * The documentation is an adventure: it's close but not fully accurate. I - * found out that after a reset some registers are *NOT* reset, though the - * docs say the would be. Interesting ones are 0x7f, 0x7d and 0x7a. They are - * related to the Audio 2 channel. I also was surprised about the consequences - * of writing 0x00 to 0x7f (which should be done by reset): The ES1887 moves - * into ES1888 mode. This means that it claims IRQ 11, which happens to be my - * ISDN adapter. Needless to say it no longer worked. I now understand why - * after rebooting 0x7f already was 0x05, the value of my choice: the BIOS - * did it. - * - * Oh, and this is another trap: in ES1887 docs mixer register 0x70 is - * described as if it's exactly the same as register 0xa1. This is *NOT* true. - * The description of 0x70 in ES1869 docs is accurate however. - * Well, the assumption about ES1869 was wrong: register 0x70 is very much - * like register 0xa1, except that bit 7 is always 1, whatever you want - * it to be. - * - * When using audio 2 mixer register 0x72 seems te be meaningless. Only 0xa2 - * has effect. - * - * Software reset not being able to reset all registers is great! Especially - * the fact that register 0x78 isn't reset is great when you wanna change back - * to single dma operation (simplex): audio 2 is still operational, and uses - * the same dma as audio 1: your ess changes into a funny echo machine. - * - * Received the news that ES1688 is detected as a ES1788. Did some thinking: - * the ES1887 detection scheme suggests in step 2 to try if bit 3 of register - * 0x64 can be changed. This is inaccurate, first I inverted the * check: "If - * can be modified, it's a 1688", which lead to a correct detection - * of my ES1887. It resulted however in bad detection of 1688 (reported by mail) - * and 1868 (if no PnP detection first): they result in a 1788 being detected. - * I don't have docs on 1688, but I do have docs on 1868: The documentation is - * probably inaccurate in the fact that I should check bit 2, not bit 3. This - * is what I do now. - */ - -/* - * About recognition of ESS chips - * - * The distinction of ES688, ES1688, ES1788, ES1887 and ES1888 is described in - * a (preliminary ??) datasheet on ES1887. Its aim is to identify ES1887, but - * during detection the text claims that "this chip may be ..." when a step - * fails. This scheme is used to distinct between the above chips. - * It appears however that some PnP chips like ES1868 are recognized as ES1788 - * by the ES1887 detection scheme. These PnP chips can be detected in another - * way however: ES1868, ES1869 and ES1878 can be recognized (full proof I think) - * by repeatedly reading mixer register 0x40. This is done by ess_identify in - * sb_common.c. - * This results in the following detection steps: - * - distinct between ES688 and ES1688+ (as always done in this driver) - * if ES688 we're ready - * - try to detect ES1868, ES1869 or ES1878 - * if successful we're ready - * - try to detect ES1888, ES1887 or ES1788 - * if successful we're ready - * - Dunno. Must be 1688. Will do in general - * - * About RECLEV support: - * - * The existing ES1688 support didn't take care of the ES1688+ recording - * levels very well. Whenever a device was selected (recmask) for recording - * its recording level was loud, and it couldn't be changed. The fact that - * internal register 0xb4 could take care of RECLEV, didn't work meaning until - * its value was restored every time the chip was reset; this reset the - * value of 0xb4 too. I guess that's what 4front also had (have?) trouble with. - * - * About ES1887 support: - * - * The ES1887 has separate registers to control the recording levels, for all - * inputs. The ES1887 specific software makes these levels the same as their - * corresponding playback levels, unless recmask says they aren't recorded. In - * the latter case the recording volumes are 0. - * Now recording levels of inputs can be controlled, by changing the playback - * levels. Furthermore several devices can be recorded together (which is not - * possible with the ES1688). - * Besides the separate recording level control for each input, the common - * recording level can also be controlled by RECLEV as described above. - * - * Not only ES1887 have this recording mixer. I know the following from the - * documentation: - * ES688 no - * ES1688 no - * ES1868 no - * ES1869 yes - * ES1878 no - * ES1879 yes - * ES1888 no/yes Contradicting documentation; most recent: yes - * ES1946 yes This is a PCI chip; not handled by this driver - */ - -#include <linux/delay.h> -#include <linux/interrupt.h> -#include <linux/spinlock.h> - -#include "sound_config.h" -#include "sb_mixer.h" -#include "sb.h" - -#include "sb_ess.h" - -#define ESSTYPE_LIKE20 -1 /* Mimic 2.0 behaviour */ -#define ESSTYPE_DETECT 0 /* Mimic 2.0 behaviour */ - -#define SUBMDL_ES1788 0x10 /* Subtype ES1788 for specific handling */ -#define SUBMDL_ES1868 0x11 /* Subtype ES1868 for specific handling */ -#define SUBMDL_ES1869 0x12 /* Subtype ES1869 for specific handling */ -#define SUBMDL_ES1878 0x13 /* Subtype ES1878 for specific handling */ -#define SUBMDL_ES1879 0x16 /* ES1879 was initially forgotten */ -#define SUBMDL_ES1887 0x14 /* Subtype ES1887 for specific handling */ -#define SUBMDL_ES1888 0x15 /* Subtype ES1888 for specific handling */ - -#define SB_CAP_ES18XX_RATE 0x100 - -#define ES1688_CLOCK1 795444 /* 128 - div */ -#define ES1688_CLOCK2 397722 /* 256 - div */ -#define ES18XX_CLOCK1 793800 /* 128 - div */ -#define ES18XX_CLOCK2 768000 /* 256 - div */ - -#ifdef FKS_LOGGING -static void ess_show_mixerregs (sb_devc *devc); -#endif -static int ess_read (sb_devc * devc, unsigned char reg); -static int ess_write (sb_devc * devc, unsigned char reg, unsigned char data); -static void ess_chgmixer - (sb_devc * devc, unsigned int reg, unsigned int mask, unsigned int val); - -/**************************************************************************** - * * - * ESS audio * - * * - ****************************************************************************/ - -struct ess_command {short cmd; short data;}; - -/* - * Commands for initializing Audio 1 for input (record) - */ -static struct ess_command ess_i08m[] = /* input 8 bit mono */ - { {0xb7, 0x51}, {0xb7, 0xd0}, {-1, 0} }; -static struct ess_command ess_i16m[] = /* input 16 bit mono */ - { {0xb7, 0x71}, {0xb7, 0xf4}, {-1, 0} }; -static struct ess_command ess_i08s[] = /* input 8 bit stereo */ - { {0xb7, 0x51}, {0xb7, 0x98}, {-1, 0} }; -static struct ess_command ess_i16s[] = /* input 16 bit stereo */ - { {0xb7, 0x71}, {0xb7, 0xbc}, {-1, 0} }; - -static struct ess_command *ess_inp_cmds[] = - { ess_i08m, ess_i16m, ess_i08s, ess_i16s }; - - -/* - * Commands for initializing Audio 1 for output (playback) - */ -static struct ess_command ess_o08m[] = /* output 8 bit mono */ - { {0xb6, 0x80}, {0xb7, 0x51}, {0xb7, 0xd0}, {-1, 0} }; -static struct ess_command ess_o16m[] = /* output 16 bit mono */ - { {0xb6, 0x00}, {0xb7, 0x71}, {0xb7, 0xf4}, {-1, 0} }; -static struct ess_command ess_o08s[] = /* output 8 bit stereo */ - { {0xb6, 0x80}, {0xb7, 0x51}, {0xb7, 0x98}, {-1, 0} }; -static struct ess_command ess_o16s[] = /* output 16 bit stereo */ - { {0xb6, 0x00}, {0xb7, 0x71}, {0xb7, 0xbc}, {-1, 0} }; - -static struct ess_command *ess_out_cmds[] = - { ess_o08m, ess_o16m, ess_o08s, ess_o16s }; - -static void ess_exec_commands - (sb_devc *devc, struct ess_command *cmdtab[]) -{ - struct ess_command *cmd; - - cmd = cmdtab [ ((devc->channels != 1) << 1) + (devc->bits != AFMT_U8) ]; - - while (cmd->cmd != -1) { - ess_write (devc, cmd->cmd, cmd->data); - cmd++; - } -} - -static void ess_change - (sb_devc *devc, unsigned int reg, unsigned int mask, unsigned int val) -{ - int value; - - value = ess_read (devc, reg); - value = (value & ~mask) | (val & mask); - ess_write (devc, reg, value); -} - -static void ess_set_output_parms - (int dev, unsigned long buf, int nr_bytes, int intrflag) -{ - sb_devc *devc = audio_devs[dev]->devc; - - if (devc->duplex) { - devc->trg_buf_16 = buf; - devc->trg_bytes_16 = nr_bytes; - devc->trg_intrflag_16 = intrflag; - devc->irq_mode_16 = IMODE_OUTPUT; - } else { - devc->trg_buf = buf; - devc->trg_bytes = nr_bytes; - devc->trg_intrflag = intrflag; - devc->irq_mode = IMODE_OUTPUT; - } -} - -static void ess_set_input_parms - (int dev, unsigned long buf, int count, int intrflag) -{ - sb_devc *devc = audio_devs[dev]->devc; - - devc->trg_buf = buf; - devc->trg_bytes = count; - devc->trg_intrflag = intrflag; - devc->irq_mode = IMODE_INPUT; -} - -static int ess_calc_div (int clock, int revert, int *speedp, int *diffp) -{ - int divider; - int speed, diff; - int retval; - - speed = *speedp; - divider = (clock + speed / 2) / speed; - retval = revert - divider; - if (retval > revert - 1) { - retval = revert - 1; - divider = revert - retval; - } - /* This line is suggested. Must be wrong I think - *speedp = (clock + divider / 2) / divider; - So I chose the next one */ - - *speedp = clock / divider; - diff = speed - *speedp; - if (diff < 0) diff =-diff; - *diffp = diff; - - return retval; -} - -static int ess_calc_best_speed - (int clock1, int rev1, int clock2, int rev2, int *divp, int *speedp) -{ - int speed1 = *speedp, speed2 = *speedp; - int div1, div2; - int diff1, diff2; - int retval; - - div1 = ess_calc_div (clock1, rev1, &speed1, &diff1); - div2 = ess_calc_div (clock2, rev2, &speed2, &diff2); - - if (diff1 < diff2) { - *divp = div1; - *speedp = speed1; - retval = 1; - } else { - /* *divp = div2; */ - *divp = 0x80 | div2; - *speedp = speed2; - retval = 2; - } - - return retval; -} - -/* - * Depending on the audiochannel ESS devices can - * have different clock settings. These are made consistent for duplex - * however. - * callers of ess_speed only do an audionum suggestion, which means - * input suggests 1, output suggests 2. This suggestion is only true - * however when doing duplex. - */ -static void ess_common_speed (sb_devc *devc, int *speedp, int *divp) -{ - int diff = 0, div; - - if (devc->duplex) { - /* - * The 0x80 is important for the first audio channel - */ - if (devc->submodel == SUBMDL_ES1888) { - div = 0x80 | ess_calc_div (795500, 256, speedp, &diff); - } else { - div = 0x80 | ess_calc_div (795500, 128, speedp, &diff); - } - } else if(devc->caps & SB_CAP_ES18XX_RATE) { - if (devc->submodel == SUBMDL_ES1888) { - ess_calc_best_speed(397700, 128, 795500, 256, - &div, speedp); - } else { - ess_calc_best_speed(ES18XX_CLOCK1, 128, ES18XX_CLOCK2, 256, - &div, speedp); - } - } else { - if (*speedp > 22000) { - div = 0x80 | ess_calc_div (ES1688_CLOCK1, 256, speedp, &diff); - } else { - div = 0x00 | ess_calc_div (ES1688_CLOCK2, 128, speedp, &diff); - } - } - *divp = div; -} - -static void ess_speed (sb_devc *devc, int audionum) -{ - int speed; - int div, div2; - - ess_common_speed (devc, &(devc->speed), &div); - -#ifdef FKS_REG_LOGGING -printk (KERN_INFO "FKS: ess_speed (%d) b speed = %d, div=%x\n", audionum, devc->speed, div); -#endif - - /* Set filter roll-off to 90% of speed/2 */ - speed = (devc->speed * 9) / 20; - - div2 = 256 - 7160000 / (speed * 82); - - if (!devc->duplex) audionum = 1; - - if (audionum == 1) { - /* Change behaviour of register A1 * - sb_chg_mixer(devc, 0x71, 0x20, 0x20) - * For ES1869 only??? */ - ess_write (devc, 0xa1, div); - ess_write (devc, 0xa2, div2); - } else { - ess_setmixer (devc, 0x70, div); - /* - * FKS: fascinating: 0x72 doesn't seem to work. - */ - ess_write (devc, 0xa2, div2); - ess_setmixer (devc, 0x72, div2); - } -} - -static int ess_audio_prepare_for_input(int dev, int bsize, int bcount) -{ - sb_devc *devc = audio_devs[dev]->devc; - - ess_speed(devc, 1); - - sb_dsp_command(devc, DSP_CMD_SPKOFF); - - ess_write (devc, 0xb8, 0x0e); /* Auto init DMA mode */ - ess_change (devc, 0xa8, 0x03, 3 - devc->channels); /* Mono/stereo */ - ess_write (devc, 0xb9, 2); /* Demand mode (4 bytes/DMA request) */ - - ess_exec_commands (devc, ess_inp_cmds); - - ess_change (devc, 0xb1, 0xf0, 0x50); - ess_change (devc, 0xb2, 0xf0, 0x50); - - devc->trigger_bits = 0; - return 0; -} - -static int ess_audio_prepare_for_output_audio1 (int dev, int bsize, int bcount) -{ - sb_devc *devc = audio_devs[dev]->devc; - - sb_dsp_reset(devc); - ess_speed(devc, 1); - ess_write (devc, 0xb8, 4); /* Auto init DMA mode */ - ess_change (devc, 0xa8, 0x03, 3 - devc->channels); /* Mono/stereo */ - ess_write (devc, 0xb9, 2); /* Demand mode (4 bytes/request) */ - - ess_exec_commands (devc, ess_out_cmds); - - ess_change (devc, 0xb1, 0xf0, 0x50); /* Enable DMA */ - ess_change (devc, 0xb2, 0xf0, 0x50); /* Enable IRQ */ - - sb_dsp_command(devc, DSP_CMD_SPKON); /* There be sound! */ - - devc->trigger_bits = 0; - return 0; -} - -static int ess_audio_prepare_for_output_audio2 (int dev, int bsize, int bcount) -{ - sb_devc *devc = audio_devs[dev]->devc; - unsigned char bits; - -/* FKS: qqq - sb_dsp_reset(devc); -*/ - - /* - * Auto-Initialize: - * DMA mode + demand mode (8 bytes/request, yes I want it all!) - * But leave 16-bit DMA bit untouched! - */ - ess_chgmixer (devc, 0x78, 0xd0, 0xd0); - - ess_speed(devc, 2); - - /* bits 4:3 on ES1887 represent recording source. Keep them! */ - bits = ess_getmixer (devc, 0x7a) & 0x18; - - /* Set stereo/mono */ - if (devc->channels != 1) bits |= 0x02; - - /* Init DACs; UNSIGNED mode for 8 bit; SIGNED mode for 16 bit */ - if (devc->bits != AFMT_U8) bits |= 0x05; /* 16 bit */ - - /* Enable DMA, IRQ will be shared (hopefully)*/ - bits |= 0x60; - - ess_setmixer (devc, 0x7a, bits); - - ess_mixer_reload (devc, SOUND_MIXER_PCM); /* There be sound! */ - - devc->trigger_bits = 0; - return 0; -} - -static int ess_audio_prepare_for_output(int dev, int bsize, int bcount) -{ - sb_devc *devc = audio_devs[dev]->devc; - -#ifdef FKS_REG_LOGGING -printk(KERN_INFO "ess_audio_prepare_for_output: dma_out=%d,dma_in=%d\n" -, audio_devs[dev]->dmap_out->dma, audio_devs[dev]->dmap_in->dma); -#endif - - if (devc->duplex) { - return ess_audio_prepare_for_output_audio2 (dev, bsize, bcount); - } else { - return ess_audio_prepare_for_output_audio1 (dev, bsize, bcount); - } -} - -static void ess_audio_halt_xfer(int dev) -{ - unsigned long flags; - sb_devc *devc = audio_devs[dev]->devc; - - spin_lock_irqsave(&devc->lock, flags); - sb_dsp_reset(devc); - spin_unlock_irqrestore(&devc->lock, flags); - - /* - * Audio 2 may still be operational! Creates awful sounds! - */ - if (devc->duplex) ess_chgmixer(devc, 0x78, 0x03, 0x00); -} - -static void ess_audio_start_input - (int dev, unsigned long buf, int nr_bytes, int intrflag) -{ - int count = nr_bytes; - sb_devc *devc = audio_devs[dev]->devc; - short c = -nr_bytes; - - /* - * Start a DMA input to the buffer pointed by dmaqtail - */ - - if (audio_devs[dev]->dmap_in->dma > 3) count >>= 1; - count--; - - devc->irq_mode = IMODE_INPUT; - - ess_write (devc, 0xa4, (unsigned char) ((unsigned short) c & 0xff)); - ess_write (devc, 0xa5, (unsigned char) (((unsigned short) c >> 8) & 0xff)); - - ess_change (devc, 0xb8, 0x0f, 0x0f); /* Go */ - devc->intr_active = 1; -} - -static void ess_audio_output_block_audio1 - (int dev, unsigned long buf, int nr_bytes, int intrflag) -{ - int count = nr_bytes; - sb_devc *devc = audio_devs[dev]->devc; - short c = -nr_bytes; - - if (audio_devs[dev]->dmap_out->dma > 3) - count >>= 1; - count--; - - devc->irq_mode = IMODE_OUTPUT; - - ess_write (devc, 0xa4, (unsigned char) ((unsigned short) c & 0xff)); - ess_write (devc, 0xa5, (unsigned char) (((unsigned short) c >> 8) & 0xff)); - - ess_change (devc, 0xb8, 0x05, 0x05); /* Go */ - devc->intr_active = 1; -} - -static void ess_audio_output_block_audio2 - (int dev, unsigned long buf, int nr_bytes, int intrflag) -{ - int count = nr_bytes; - sb_devc *devc = audio_devs[dev]->devc; - short c = -nr_bytes; - - if (audio_devs[dev]->dmap_out->dma > 3) count >>= 1; - count--; - - ess_setmixer (devc, 0x74, (unsigned char) ((unsigned short) c & 0xff)); - ess_setmixer (devc, 0x76, (unsigned char) (((unsigned short) c >> 8) & 0xff)); - ess_chgmixer (devc, 0x78, 0x03, 0x03); /* Go */ - - devc->irq_mode_16 = IMODE_OUTPUT; - devc->intr_active_16 = 1; -} - -static void ess_audio_output_block - (int dev, unsigned long buf, int nr_bytes, int intrflag) -{ - sb_devc *devc = audio_devs[dev]->devc; - - if (devc->duplex) { - ess_audio_output_block_audio2 (dev, buf, nr_bytes, intrflag); - } else { - ess_audio_output_block_audio1 (dev, buf, nr_bytes, intrflag); - } -} - -/* - * FKS: the if-statements for both bits and bits_16 are quite alike. - * Combine this... - */ -static void ess_audio_trigger(int dev, int bits) -{ - sb_devc *devc = audio_devs[dev]->devc; - - int bits_16 = bits & devc->irq_mode_16; - bits &= devc->irq_mode; - - if (!bits && !bits_16) { - /* FKS oh oh.... wrong?? for dma 16? */ - sb_dsp_command(devc, 0xd0); /* Halt DMA */ - } - - if (bits) { - switch (devc->irq_mode) - { - case IMODE_INPUT: - ess_audio_start_input(dev, devc->trg_buf, devc->trg_bytes, - devc->trg_intrflag); - break; - - case IMODE_OUTPUT: - ess_audio_output_block(dev, devc->trg_buf, devc->trg_bytes, - devc->trg_intrflag); - break; - } - } - - if (bits_16) { - switch (devc->irq_mode_16) { - case IMODE_INPUT: - ess_audio_start_input(dev, devc->trg_buf_16, devc->trg_bytes_16, - devc->trg_intrflag_16); - break; - - case IMODE_OUTPUT: - ess_audio_output_block(dev, devc->trg_buf_16, devc->trg_bytes_16, - devc->trg_intrflag_16); - break; - } - } - - devc->trigger_bits = bits | bits_16; -} - -static int ess_audio_set_speed(int dev, int speed) -{ - sb_devc *devc = audio_devs[dev]->devc; - int minspeed, maxspeed, dummydiv; - - if (speed > 0) { - minspeed = (devc->duplex ? 6215 : 5000 ); - maxspeed = (devc->duplex ? 44100 : 48000); - if (speed < minspeed) speed = minspeed; - if (speed > maxspeed) speed = maxspeed; - - ess_common_speed (devc, &speed, &dummydiv); - - devc->speed = speed; - } - return devc->speed; -} - -/* - * FKS: This is a one-on-one copy of sb1_audio_set_bits - */ -static unsigned int ess_audio_set_bits(int dev, unsigned int bits) -{ - sb_devc *devc = audio_devs[dev]->devc; - - if (bits != 0) { - if (bits == AFMT_U8 || bits == AFMT_S16_LE) { - devc->bits = bits; - } else { - devc->bits = AFMT_U8; - } - } - - return devc->bits; -} - -/* - * FKS: This is a one-on-one copy of sbpro_audio_set_channels - * (*) Modified it!! - */ -static short ess_audio_set_channels(int dev, short channels) -{ - sb_devc *devc = audio_devs[dev]->devc; - - if (channels == 1 || channels == 2) devc->channels = channels; - - return devc->channels; -} - -static struct audio_driver ess_audio_driver = /* ESS ES688/1688 */ -{ - .owner = THIS_MODULE, - .open = sb_audio_open, - .close = sb_audio_close, - .output_block = ess_set_output_parms, - .start_input = ess_set_input_parms, - .prepare_for_input = ess_audio_prepare_for_input, - .prepare_for_output = ess_audio_prepare_for_output, - .halt_io = ess_audio_halt_xfer, - .trigger = ess_audio_trigger, - .set_speed = ess_audio_set_speed, - .set_bits = ess_audio_set_bits, - .set_channels = ess_audio_set_channels -}; - -/* - * ess_audio_init must be called from sb_audio_init - */ -struct audio_driver *ess_audio_init - (sb_devc *devc, int *audio_flags, int *format_mask) -{ - *audio_flags = DMA_AUTOMODE; - *format_mask |= AFMT_S16_LE; - - if (devc->duplex) { - int tmp_dma; - /* - * sb_audio_init thinks dma8 is for playback and - * dma16 is for record. Not now! So swap them. - */ - tmp_dma = devc->dma16; - devc->dma16 = devc->dma8; - devc->dma8 = tmp_dma; - - *audio_flags |= DMA_DUPLEX; - } - - return &ess_audio_driver; -} - -/**************************************************************************** - * * - * ESS common * - * * - ****************************************************************************/ -static void ess_handle_channel - (char *channel, int dev, int intr_active, unsigned char flag, int irq_mode) -{ - if (!intr_active || !flag) return; -#ifdef FKS_REG_LOGGING -printk(KERN_INFO "FKS: ess_handle_channel %s irq_mode=%d\n", channel, irq_mode); -#endif - switch (irq_mode) { - case IMODE_OUTPUT: - DMAbuf_outputintr (dev, 1); - break; - - case IMODE_INPUT: - DMAbuf_inputintr (dev); - break; - - case IMODE_INIT: - break; - - default:; - /* printk(KERN_WARNING "ESS: Unexpected interrupt\n"); */ - } -} - -/* - * FKS: TODO!!! Finish this! - * - * I think midi stuff uses uart401, without interrupts. - * So IMODE_MIDI isn't a value for devc->irq_mode. - */ -void ess_intr (sb_devc *devc) -{ - int status; - unsigned char src; - - if (devc->submodel == SUBMDL_ES1887) { - src = ess_getmixer (devc, 0x7f) >> 4; - } else { - src = 0xff; - } - -#ifdef FKS_REG_LOGGING -printk(KERN_INFO "FKS: sbintr src=%x\n",(int)src); -#endif - ess_handle_channel - ( "Audio 1" - , devc->dev, devc->intr_active , src & 0x01, devc->irq_mode ); - ess_handle_channel - ( "Audio 2" - , devc->dev, devc->intr_active_16, src & 0x02, devc->irq_mode_16); - /* - * Acknowledge interrupts - */ - if (devc->submodel == SUBMDL_ES1887 && (src & 0x02)) { - ess_chgmixer (devc, 0x7a, 0x80, 0x00); - } - - if (src & 0x01) { - status = inb(DSP_DATA_AVAIL); - } -} - -static void ess_extended (sb_devc * devc) -{ - /* Enable extended mode */ - - sb_dsp_command(devc, 0xc6); -} - -static int ess_write (sb_devc * devc, unsigned char reg, unsigned char data) -{ -#ifdef FKS_REG_LOGGING -printk(KERN_INFO "FKS: write reg %x: %x\n", reg, data); -#endif - /* Write a byte to an extended mode register of ES1688 */ - - if (!sb_dsp_command(devc, reg)) - return 0; - - return sb_dsp_command(devc, data); -} - -static int ess_read (sb_devc * devc, unsigned char reg) -{ - /* Read a byte from an extended mode register of ES1688 */ - - /* Read register command */ - if (!sb_dsp_command(devc, 0xc0)) return -1; - - if (!sb_dsp_command(devc, reg )) return -1; - - return sb_dsp_get_byte(devc); -} - -int ess_dsp_reset(sb_devc * devc) -{ - int loopc; - -#ifdef FKS_REG_LOGGING -printk(KERN_INFO "FKS: ess_dsp_reset 1\n"); -ess_show_mixerregs (devc); -#endif - - outb(3, DSP_RESET); /* Reset FIFO too */ - - udelay(10); - outb(0, DSP_RESET); - udelay(30); - - for (loopc = 0; loopc < 1000 && !(inb(DSP_DATA_AVAIL) & 0x80); loopc++); - - if (inb(DSP_READ) != 0xAA) { - DDB(printk("sb: No response to RESET\n")); - return 0; /* Sorry */ - } - ess_extended (devc); - -#ifdef FKS_LOGGING -printk(KERN_INFO "FKS: dsp_reset 2\n"); -ess_show_mixerregs (devc); -#endif - - return 1; -} - -static int ess_irq_bits (int irq) -{ - switch (irq) { - case 2: - case 9: - return 0; - - case 5: - return 1; - - case 7: - return 2; - - case 10: - return 3; - - default: - printk(KERN_ERR "ESS1688: Invalid IRQ %d\n", irq); - return -1; - } -} - -/* - * Set IRQ configuration register for all ESS models - */ -static int ess_common_set_irq_hw (sb_devc * devc) -{ - int irq_bits; - - if ((irq_bits = ess_irq_bits (devc->irq)) == -1) return 0; - - if (!ess_write (devc, 0xb1, 0x50 | (irq_bits << 2))) { - printk(KERN_ERR "ES1688: Failed to write to IRQ config register\n"); - return 0; - } - return 1; -} - -/* - * I wanna use modern ES1887 mixer irq handling. Funny is the - * fact that my BIOS wants the same. But suppose someone's BIOS - * doesn't do this! - * This is independent of duplex. If there's a 1887 this will - * prevent it from going into 1888 mode. - */ -static void ess_es1887_set_irq_hw (sb_devc * devc) -{ - int irq_bits; - - if ((irq_bits = ess_irq_bits (devc->irq)) == -1) return; - - ess_chgmixer (devc, 0x7f, 0x0f, 0x01 | ((irq_bits + 1) << 1)); -} - -static int ess_set_irq_hw (sb_devc * devc) -{ - if (devc->submodel == SUBMDL_ES1887) ess_es1887_set_irq_hw (devc); - - return ess_common_set_irq_hw (devc); -} - -#ifdef FKS_TEST - -/* - * FKS_test: - * for ES1887: 00, 18, non wr bits: 0001 1000 - * for ES1868: 00, b8, non wr bits: 1011 1000 - * for ES1888: 00, f8, non wr bits: 1111 1000 - * for ES1688: 00, f8, non wr bits: 1111 1000 - * + ES968 - */ - -static void FKS_test (sb_devc * devc) -{ - int val1, val2; - val1 = ess_getmixer (devc, 0x64); - ess_setmixer (devc, 0x64, ~val1); - val2 = ess_getmixer (devc, 0x64) ^ ~val1; - ess_setmixer (devc, 0x64, val1); - val1 ^= ess_getmixer (devc, 0x64); -printk (KERN_INFO "FKS: FKS_test %02x, %02x\n", (val1 & 0x0ff), (val2 & 0x0ff)); -}; -#endif - -static unsigned int ess_identify (sb_devc * devc) -{ - unsigned int val; - unsigned long flags; - - spin_lock_irqsave(&devc->lock, flags); - outb(((unsigned char) (0x40 & 0xff)), MIXER_ADDR); - - udelay(20); - val = inb(MIXER_DATA) << 8; - udelay(20); - val |= inb(MIXER_DATA); - udelay(20); - spin_unlock_irqrestore(&devc->lock, flags); - - return val; -} - -/* - * ESS technology describes a detection scheme in their docs. It involves - * fiddling with the bits in certain mixer registers. ess_probe is supposed - * to help. - * - * FKS: tracing shows ess_probe writes wrong value to 0x64. Bit 3 reads 1, but - * should be written 0 only. Check this. - */ -static int ess_probe (sb_devc * devc, int reg, int xorval) -{ - int val1, val2, val3; - - val1 = ess_getmixer (devc, reg); - val2 = val1 ^ xorval; - ess_setmixer (devc, reg, val2); - val3 = ess_getmixer (devc, reg); - ess_setmixer (devc, reg, val1); - - return (val2 == val3); -} - -int ess_init(sb_devc * devc, struct address_info *hw_config) -{ - unsigned char cfg; - int ess_major = 0, ess_minor = 0; - int i; - static char name[100], modelname[10]; - - /* - * Try to detect ESS chips. - */ - - sb_dsp_command(devc, 0xe7); /* Return identification */ - - for (i = 1000; i; i--) { - if (inb(DSP_DATA_AVAIL) & 0x80) { - if (ess_major == 0) { - ess_major = inb(DSP_READ); - } else { - ess_minor = inb(DSP_READ); - break; - } - } - } - - if (ess_major == 0) return 0; - - if (ess_major == 0x48 && (ess_minor & 0xf0) == 0x80) { - sprintf(name, "ESS ES488 AudioDrive (rev %d)", - ess_minor & 0x0f); - hw_config->name = name; - devc->model = MDL_SBPRO; - return 1; - } - - /* - * This the detection heuristic of ESS technology, though somewhat - * changed to actually make it work. - * This results in the following detection steps: - * - distinct between ES688 and ES1688+ (as always done in this driver) - * if ES688 we're ready - * - try to detect ES1868, ES1869 or ES1878 (ess_identify) - * if successful we're ready - * - try to detect ES1888, ES1887 or ES1788 (aim: detect ES1887) - * if successful we're ready - * - Dunno. Must be 1688. Will do in general - * - * This is the most BETA part of the software: Will the detection - * always work? - */ - devc->model = MDL_ESS; - devc->submodel = ess_minor & 0x0f; - - if (ess_major == 0x68 && (ess_minor & 0xf0) == 0x80) { - char *chip = NULL; - int submodel = -1; - - switch (devc->sbmo.esstype) { - case ESSTYPE_DETECT: - case ESSTYPE_LIKE20: - break; - case 688: - submodel = 0x00; - break; - case 1688: - submodel = 0x08; - break; - case 1868: - submodel = SUBMDL_ES1868; - break; - case 1869: - submodel = SUBMDL_ES1869; - break; - case 1788: - submodel = SUBMDL_ES1788; - break; - case 1878: - submodel = SUBMDL_ES1878; - break; - case 1879: - submodel = SUBMDL_ES1879; - break; - case 1887: - submodel = SUBMDL_ES1887; - break; - case 1888: - submodel = SUBMDL_ES1888; - break; - default: - printk (KERN_ERR "Invalid esstype=%d specified\n", devc->sbmo.esstype); - return 0; - } - if (submodel != -1) { - devc->submodel = submodel; - sprintf (modelname, "ES%d", devc->sbmo.esstype); - chip = modelname; - } - if (chip == NULL && (ess_minor & 0x0f) < 8) { - chip = "ES688"; - } -#ifdef FKS_TEST -FKS_test (devc); -#endif - /* - * If Nothing detected yet, and we want 2.0 behaviour... - * Then let's assume it's ES1688. - */ - if (chip == NULL && devc->sbmo.esstype == ESSTYPE_LIKE20) { - chip = "ES1688"; - } - - if (chip == NULL) { - int type; - - type = ess_identify (devc); - - switch (type) { - case 0x1868: - chip = "ES1868"; - devc->submodel = SUBMDL_ES1868; - break; - case 0x1869: - chip = "ES1869"; - devc->submodel = SUBMDL_ES1869; - break; - case 0x1878: - chip = "ES1878"; - devc->submodel = SUBMDL_ES1878; - break; - case 0x1879: - chip = "ES1879"; - devc->submodel = SUBMDL_ES1879; - break; - default: - if ((type & 0x00ff) != ((type >> 8) & 0x00ff)) { - printk ("ess_init: Unrecognized %04x\n", type); - } - } - } -#if 0 - /* - * this one failed: - * the probing of bit 4 is another thought: from ES1788 and up, all - * chips seem to have hardware volume control. Bit 4 is readonly to - * check if a hardware volume interrupt has fired. - * Cause ES688/ES1688 don't have this feature, bit 4 might be writeable - * for these chips. - */ - if (chip == NULL && !ess_probe(devc, 0x64, (1 << 4))) { -#endif - /* - * the probing of bit 2 is my idea. The ES1887 docs want me to probe - * bit 3. This re |