diff options
Diffstat (limited to 'sound/oss/dmasound/dmasound_awacs.c')
| -rw-r--r-- | sound/oss/dmasound/dmasound_awacs.c | 3215 |
1 files changed, 0 insertions, 3215 deletions
diff --git a/sound/oss/dmasound/dmasound_awacs.c b/sound/oss/dmasound/dmasound_awacs.c deleted file mode 100644 index 8f6388004f4..00000000000 --- a/sound/oss/dmasound/dmasound_awacs.c +++ /dev/null @@ -1,3215 +0,0 @@ -/* - * linux/sound/oss/dmasound/dmasound_awacs.c - * - * PowerMac `AWACS' and `Burgundy' DMA Sound Driver - * with some limited support for DACA & Tumbler - * - * See linux/sound/oss/dmasound/dmasound_core.c for copyright and - * history prior to 2001/01/26. - * - * 26/01/2001 ed 0.1 Iain Sandoe - * - added version info. - * - moved dbdma command buffer allocation to PMacXXXSqSetup() - * - fixed up beep dbdma cmd buffers - * - * 08/02/2001 [0.2] - * - make SNDCTL_DSP_GETFMTS return the correct info for the h/w - * - move soft format translations to a separate file - * - [0.3] make SNDCTL_DSP_GETCAPS return correct info. - * - [0.4] more informative machine name strings. - * - [0.5] - * - record changes. - * - made the default_hard/soft entries. - * 04/04/2001 [0.6] - * - minor correction to bit assignments in awacs_defs.h - * - incorporate mixer changes from 2.2.x back-port. - * - take out passthru as a rec input (it isn't). - * - make Input Gain slider work the 'right way up'. - * - try to make the mixer sliders more logical - so now the - * input selectors are just two-state (>50% == ON) and the - * Input Gain slider handles the rest of the gain issues. - * - try to pick slider representations that most closely match - * the actual use - e.g. IGain for input gain... - * - first stab at over/under-run detection. - * - minor cosmetic changes to IRQ identification. - * - fix bug where rates > max would be reported as supported. - * - first stab at over/under-run detection. - * - make use of i2c for mixer settings conditional on perch - * rather than cuda (some machines without perch have cuda). - * - fix bug where TX stops when dbdma status comes up "DEAD" - * so far only reported on PowerComputing clones ... but. - * - put in AWACS/Screamer register write timeouts. - * - part way to partitioning the init() stuff - * - first pass at 'tumbler' stuff (not support - just an attempt - * to allow the driver to load on new G4s). - * 01/02/2002 [0.7] - BenH - * - all sort of minor bits went in since the latest update, I - * bumped the version number for that reason - * - * 07/26/2002 [0.8] - BenH - * - More minor bits since last changelog (I should be more careful - * with those) - * - Support for snapper & better tumbler integration by Toby Sargeant - * - Headphone detect for scremer by Julien Blache - * - More tumbler fixed by Andreas Schwab - * 11/29/2003 [0.8.1] - Renzo Davoli (King Enzo) - * - Support for Snapper line in - * - snapper input resampling (for rates < 44100) - * - software line gain control - */ - -/* GENERAL FIXME/TODO: check that the assumptions about what is written to - mac-io is valid for DACA & Tumbler. - - This driver is in bad need of a rewrite. The dbdma code has to be split, - some proper device-tree parsing code has to be written, etc... -*/ - -#include <linux/types.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/soundcard.h> -#include <linux/adb.h> -#include <linux/nvram.h> -#include <linux/tty.h> -#include <linux/vt_kern.h> -#include <linux/spinlock.h> -#include <linux/kmod.h> -#include <linux/interrupt.h> -#include <linux/input.h> -#include <linux/mutex.h> -#ifdef CONFIG_ADB_CUDA -#include <linux/cuda.h> -#endif -#ifdef CONFIG_ADB_PMU -#include <linux/pmu.h> -#endif - -#include <asm/uaccess.h> -#include <asm/prom.h> -#include <asm/machdep.h> -#include <asm/io.h> -#include <asm/dbdma.h> -#include <asm/pmac_feature.h> -#include <asm/irq.h> -#include <asm/nvram.h> - -#include "awacs_defs.h" -#include "dmasound.h" -#include "tas3001c.h" -#include "tas3004.h" -#include "tas_common.h" - -#define DMASOUND_AWACS_REVISION 0 -#define DMASOUND_AWACS_EDITION 7 - -#define AWACS_SNAPPER 110 /* fake revision # for snapper */ -#define AWACS_BURGUNDY 100 /* fake revision # for burgundy */ -#define AWACS_TUMBLER 90 /* fake revision # for tumbler */ -#define AWACS_DACA 80 /* fake revision # for daca (ibook) */ -#define AWACS_AWACS 2 /* holding revision for AWACS */ -#define AWACS_SCREAMER 3 /* holding revision for Screamer */ -/* - * Interrupt numbers and addresses, & info obtained from the device tree. - */ -static int awacs_irq, awacs_tx_irq, awacs_rx_irq; -static volatile struct awacs_regs __iomem *awacs; -static volatile u32 __iomem *i2s; -static volatile struct dbdma_regs __iomem *awacs_txdma, *awacs_rxdma; -static int awacs_rate_index; -static int awacs_subframe; -static struct device_node* awacs_node; -static struct device_node* i2s_node; -static struct resource awacs_rsrc[3]; - -static char awacs_name[64]; -static int awacs_revision; -static int awacs_sleeping; -static DEFINE_MUTEX(dmasound_mutex); - -static int sound_device_id; /* exists after iMac revA */ -static int hw_can_byteswap = 1 ; /* most pmac sound h/w can */ - -/* model info */ -/* To be replaced with better interaction with pmac_feature.c */ -static int is_pbook_3X00; -static int is_pbook_g3; - -/* expansion info */ -static int has_perch; -static int has_ziva; - -/* for earlier powerbooks which need fiddling with mac-io to enable - * cd etc. -*/ -static unsigned char __iomem *latch_base; -static unsigned char __iomem *macio_base; - -/* - * Space for the DBDMA command blocks. - */ -static void *awacs_tx_cmd_space; -static volatile struct dbdma_cmd *awacs_tx_cmds; -static int number_of_tx_cmd_buffers; - -static void *awacs_rx_cmd_space; -static volatile struct dbdma_cmd *awacs_rx_cmds; -static int number_of_rx_cmd_buffers; - -/* - * Cached values of AWACS registers (we can't read them). - * Except on the burgundy (and screamer). XXX - */ - -int awacs_reg[8]; -int awacs_reg1_save; - -/* tracking values for the mixer contents -*/ - -static int spk_vol; -static int line_vol; -static int passthru_vol; - -static int ip_gain; /* mic preamp settings */ -static int rec_lev = 0x4545 ; /* default CD gain 69 % */ -static int mic_lev; -static int cd_lev = 0x6363 ; /* 99 % */ -static int line_lev; - -static int hdp_connected; - -/* - * Stuff for outputting a beep. The values range from -327 to +327 - * so we can multiply by an amplitude in the range 0..100 to get a - * signed short value to put in the output buffer. - */ -static short beep_wform[256] = { - 0, 40, 79, 117, 153, 187, 218, 245, - 269, 288, 304, 316, 323, 327, 327, 324, - 318, 310, 299, 288, 275, 262, 249, 236, - 224, 213, 204, 196, 190, 186, 183, 182, - 182, 183, 186, 189, 192, 196, 200, 203, - 206, 208, 209, 209, 209, 207, 204, 201, - 197, 193, 188, 183, 179, 174, 170, 166, - 163, 161, 160, 159, 159, 160, 161, 162, - 164, 166, 168, 169, 171, 171, 171, 170, - 169, 167, 163, 159, 155, 150, 144, 139, - 133, 128, 122, 117, 113, 110, 107, 105, - 103, 103, 103, 103, 104, 104, 105, 105, - 105, 103, 101, 97, 92, 86, 78, 68, - 58, 45, 32, 18, 3, -11, -26, -41, - -55, -68, -79, -88, -95, -100, -102, -102, - -99, -93, -85, -75, -62, -48, -33, -16, - 0, 16, 33, 48, 62, 75, 85, 93, - 99, 102, 102, 100, 95, 88, 79, 68, - 55, 41, 26, 11, -3, -18, -32, -45, - -58, -68, -78, -86, -92, -97, -101, -103, - -105, -105, -105, -104, -104, -103, -103, -103, - -103, -105, -107, -110, -113, -117, -122, -128, - -133, -139, -144, -150, -155, -159, -163, -167, - -169, -170, -171, -171, -171, -169, -168, -166, - -164, -162, -161, -160, -159, -159, -160, -161, - -163, -166, -170, -174, -179, -183, -188, -193, - -197, -201, -204, -207, -209, -209, -209, -208, - -206, -203, -200, -196, -192, -189, -186, -183, - -182, -182, -183, -186, -190, -196, -204, -213, - -224, -236, -249, -262, -275, -288, -299, -310, - -318, -324, -327, -327, -323, -316, -304, -288, - -269, -245, -218, -187, -153, -117, -79, -40, -}; - -/* beep support */ -#define BEEP_SRATE 22050 /* 22050 Hz sample rate */ -#define BEEP_BUFLEN 512 -#define BEEP_VOLUME 15 /* 0 - 100 */ - -static int beep_vol = BEEP_VOLUME; -static int beep_playing; -static int awacs_beep_state; -static short *beep_buf; -static void *beep_dbdma_cmd_space; -static volatile struct dbdma_cmd *beep_dbdma_cmd; - -/* Burgundy functions */ -static void awacs_burgundy_wcw(unsigned addr,unsigned newval); -static unsigned awacs_burgundy_rcw(unsigned addr); -static void awacs_burgundy_write_volume(unsigned address, int volume); -static int awacs_burgundy_read_volume(unsigned address); -static void awacs_burgundy_write_mvolume(unsigned address, int volume); -static int awacs_burgundy_read_mvolume(unsigned address); - -/* we will allocate a single 'emergency' dbdma cmd block to use if the - tx status comes up "DEAD". This happens on some PowerComputing Pmac - clones, either owing to a bug in dbdma or some interaction between - IDE and sound. However, this measure would deal with DEAD status if - if appeared elsewhere. - - for the sake of memory efficiency we'll allocate this cmd as part of - the beep cmd stuff. -*/ - -static volatile struct dbdma_cmd *emergency_dbdma_cmd; - -#ifdef CONFIG_PM -/* - * Stuff for restoring after a sleep. - */ -static void awacs_sleep_notify(struct pmu_sleep_notifier *self, int when); -struct pmu_sleep_notifier awacs_sleep_notifier = { - awacs_sleep_notify, SLEEP_LEVEL_SOUND, -}; -#endif /* CONFIG_PM */ - -/* for (soft) sample rate translations */ -int expand_bal; /* Balance factor for expanding (not volume!) */ -int expand_read_bal; /* Balance factor for expanding reads (not volume!) */ - -/*** Low level stuff *********************************************************/ - -static void *PMacAlloc(unsigned int size, gfp_t flags); -static void PMacFree(void *ptr, unsigned int size); -static int PMacIrqInit(void); -#ifdef MODULE -static void PMacIrqCleanup(void); -#endif -static void PMacSilence(void); -static void PMacInit(void); -static int PMacSetFormat(int format); -static int PMacSetVolume(int volume); -static void PMacPlay(void); -static void PMacRecord(void); -static irqreturn_t pmac_awacs_tx_intr(int irq, void *devid); -static irqreturn_t pmac_awacs_rx_intr(int irq, void *devid); -static irqreturn_t pmac_awacs_intr(int irq, void *devid); -static void awacs_write(int val); -static int awacs_get_volume(int reg, int lshift); -static int awacs_volume_setter(int volume, int n, int mute, int lshift); - - -/*** Mid level stuff **********************************************************/ - -static int PMacMixerIoctl(u_int cmd, u_long arg); -static int PMacWriteSqSetup(void); -static int PMacReadSqSetup(void); -static void PMacAbortRead(void); - -extern TRANS transAwacsNormal ; -extern TRANS transAwacsExpand ; -extern TRANS transAwacsNormalRead ; -extern TRANS transAwacsExpandRead ; - -extern int daca_init(void); -extern void daca_cleanup(void); -extern int daca_set_volume(uint left_vol, uint right_vol); -extern void daca_get_volume(uint * left_vol, uint *right_vol); -extern int daca_enter_sleep(void); -extern int daca_leave_sleep(void); - -#define TRY_LOCK() \ - if ((rc = mutex_lock_interruptible(&dmasound_mutex)) != 0) \ - return rc; -#define LOCK() mutex_lock(&dmasound_mutex); - -#define UNLOCK() mutex_unlock(&dmasound_mutex); - -/* We use different versions that the ones provided in dmasound.h - * - * FIXME: Use different names ;) - */ -#undef IOCTL_IN -#undef IOCTL_OUT - -#define IOCTL_IN(arg, ret) \ - rc = get_user(ret, (int __user *)(arg)); \ - if (rc) break; -#define IOCTL_OUT(arg, ret) \ - ioctl_return2((int __user *)(arg), ret) - -static inline int ioctl_return2(int __user *addr, int value) -{ - return value < 0 ? value : put_user(value, addr); -} - - -/*** AE - TUMBLER / SNAPPER START ************************************************/ - - -int gpio_audio_reset, gpio_audio_reset_pol; -int gpio_amp_mute, gpio_amp_mute_pol; -int gpio_headphone_mute, gpio_headphone_mute_pol; -int gpio_headphone_detect, gpio_headphone_detect_pol; -int gpio_headphone_irq; - -int -setup_audio_gpio(const char *name, const char* compatible, int *gpio_addr, int* gpio_pol) -{ - struct device_node *gpiop; - struct device_node *np; - const u32* pp; - int ret = -ENODEV; - - gpiop = of_find_node_by_name(NULL, "gpio"); - if (!gpiop) - goto done; - - np = of_get_next_child(gpiop, NULL); - while(np != 0) { - if (name) { - const char *property = - of_get_property(np,"audio-gpio",NULL); - if (property != 0 && strcmp(property,name) == 0) - break; - } else if (compatible && of_device_is_compatible(np, compatible)) - break; - np = of_get_next_child(gpiop, np); - } - if (!np) - goto done; - pp = of_get_property(np, "AAPL,address", NULL); - if (!pp) - goto done; - *gpio_addr = (*pp) & 0x0000ffff; - pp = of_get_property(np, "audio-gpio-active-state", NULL); - if (pp) - *gpio_pol = *pp; - else - *gpio_pol = 1; - ret = irq_of_parse_and_map(np, 0); -done: - of_node_put(np); - of_node_put(gpiop); - return ret; -} - -static inline void -write_audio_gpio(int gpio_addr, int data) -{ - if (!gpio_addr) - return; - pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, gpio_addr, data ? 0x05 : 0x04); -} - -static inline int -read_audio_gpio(int gpio_addr) -{ - if (!gpio_addr) - return 0; - return ((pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, gpio_addr, 0) & 0x02) !=0); -} - -/* - * Headphone interrupt via GPIO (Tumbler, Snapper, DACA) - */ -static irqreturn_t -headphone_intr(int irq, void *devid) -{ - unsigned long flags; - - spin_lock_irqsave(&dmasound.lock, flags); - if (read_audio_gpio(gpio_headphone_detect) == gpio_headphone_detect_pol) { - printk(KERN_INFO "Audio jack plugged, muting speakers.\n"); - write_audio_gpio(gpio_headphone_mute, !gpio_headphone_mute_pol); - write_audio_gpio(gpio_amp_mute, gpio_amp_mute_pol); - tas_output_device_change(sound_device_id,TAS_OUTPUT_HEADPHONES,0); - } else { - printk(KERN_INFO "Audio jack unplugged, enabling speakers.\n"); - write_audio_gpio(gpio_amp_mute, !gpio_amp_mute_pol); - write_audio_gpio(gpio_headphone_mute, gpio_headphone_mute_pol); - tas_output_device_change(sound_device_id,TAS_OUTPUT_INTERNAL_SPKR,0); - } - spin_unlock_irqrestore(&dmasound.lock, flags); - return IRQ_HANDLED; -} - - -/* Initialize tumbler */ - -static int -tas_dmasound_init(void) -{ - setup_audio_gpio( - "audio-hw-reset", - NULL, - &gpio_audio_reset, - &gpio_audio_reset_pol); - setup_audio_gpio( - "amp-mute", - NULL, - &gpio_amp_mute, - &gpio_amp_mute_pol); - setup_audio_gpio("headphone-mute", - NULL, - &gpio_headphone_mute, - &gpio_headphone_mute_pol); - gpio_headphone_irq = setup_audio_gpio( - "headphone-detect", - NULL, - &gpio_headphone_detect, - &gpio_headphone_detect_pol); - /* Fix some broken OF entries in desktop machines */ - if (!gpio_headphone_irq) - gpio_headphone_irq = setup_audio_gpio( - NULL, - "keywest-gpio15", - &gpio_headphone_detect, - &gpio_headphone_detect_pol); - - write_audio_gpio(gpio_audio_reset, gpio_audio_reset_pol); - msleep(100); - write_audio_gpio(gpio_audio_reset, !gpio_audio_reset_pol); - msleep(100); - if (gpio_headphone_irq) { - if (request_irq(gpio_headphone_irq,headphone_intr,0,"Headphone detect",NULL) < 0) { - printk(KERN_ERR "tumbler: Can't request headphone interrupt\n"); - gpio_headphone_irq = 0; - } else { - u8 val; - /* Activate headphone status interrupts */ - val = pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, gpio_headphone_detect, 0); - pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, gpio_headphone_detect, val | 0x80); - /* Trigger it */ - headphone_intr(0, NULL); - } - } - if (!gpio_headphone_irq) { - /* Some machine enter this case ? */ - printk(KERN_WARNING "tumbler: Headphone detect IRQ not found, enabling all outputs !\n"); - write_audio_gpio(gpio_amp_mute, !gpio_amp_mute_pol); - write_audio_gpio(gpio_headphone_mute, !gpio_headphone_mute_pol); - } - return 0; -} - - -static int -tas_dmasound_cleanup(void) -{ - if (gpio_headphone_irq) - free_irq(gpio_headphone_irq, NULL); - return 0; -} - -/* We don't support 48k yet */ -static int tas_freqs[1] = { 44100 } ; -static int tas_freqs_ok[1] = { 1 } ; - -/* don't know what to do really - just have to leave it where - * OF left things -*/ - -static int -tas_set_frame_rate(void) -{ - if (i2s) { - out_le32(i2s + (I2S_REG_SERIAL_FORMAT >> 2), 0x41190000); - out_le32(i2s + (I2S_REG_DATAWORD_SIZES >> 2), 0x02000200); - } - dmasound.hard.speed = 44100 ; - awacs_rate_index = 0 ; - return 44100 ; -} - -static int -tas_mixer_ioctl(u_int cmd, u_long arg) -{ - int __user *argp = (int __user *)arg; - int data; - int rc; - - rc=tas_device_ioctl(cmd, arg); - if (rc != -EINVAL) { - return rc; - } - - if ((cmd & ~0xff) == MIXER_WRITE(0) && - tas_supported_mixers() & (1<<(cmd & 0xff))) { - rc = get_user(data, argp); - if (rc<0) return rc; - tas_set_mixer_level(cmd & 0xff, data); - tas_get_mixer_level(cmd & 0xff, &data); - return ioctl_return2(argp, data); - } - if ((cmd & ~0xff) == MIXER_READ(0) && - tas_supported_mixers() & (1<<(cmd & 0xff))) { - tas_get_mixer_level(cmd & 0xff, &data); - return ioctl_return2(argp, data); - } - - switch(cmd) { - case SOUND_MIXER_READ_DEVMASK: - data = tas_supported_mixers() | SOUND_MASK_SPEAKER; - rc = IOCTL_OUT(arg, data); - break; - case SOUND_MIXER_READ_STEREODEVS: - data = tas_stereo_mixers(); - rc = IOCTL_OUT(arg, data); - break; - case SOUND_MIXER_READ_CAPS: - rc = IOCTL_OUT(arg, 0); - break; - case SOUND_MIXER_READ_RECMASK: - // XXX FIXME: find a way to check what is really available */ - data = SOUND_MASK_LINE | SOUND_MASK_MIC; - rc = IOCTL_OUT(arg, data); - break; - case SOUND_MIXER_READ_RECSRC: - if (awacs_reg[0] & MASK_MUX_AUDIN) - data |= SOUND_MASK_LINE; - if (awacs_reg[0] & MASK_MUX_MIC) - data |= SOUND_MASK_MIC; - rc = IOCTL_OUT(arg, data); - break; - case SOUND_MIXER_WRITE_RECSRC: - IOCTL_IN(arg, data); - data =0; - rc = IOCTL_OUT(arg, data); - break; - case SOUND_MIXER_WRITE_SPEAKER: /* really bell volume */ - IOCTL_IN(arg, data); - beep_vol = data & 0xff; - /* fall through */ - case SOUND_MIXER_READ_SPEAKER: - rc = IOCTL_OUT(arg, (beep_vol<<8) | beep_vol); - break; - case SOUND_MIXER_OUTMASK: - case SOUND_MIXER_OUTSRC: - default: - rc = -EINVAL; - } - - return rc; -} - -static void __init -tas_init_frame_rates(const unsigned int *prop, unsigned int l) -{ - int i ; - if (prop) { - for (i=0; i<1; i++) - tas_freqs_ok[i] = 0; - for (l /= sizeof(int); l > 0; --l) { - unsigned int r = *prop++; - /* Apple 'Fixed' format */ - if (r >= 0x10000) - r >>= 16; - for (i = 0; i < 1; ++i) { - if (r == tas_freqs[i]) { - tas_freqs_ok[i] = 1; - break; - } - } - } - } - /* else we assume that all the rates are available */ -} - - -/*** AE - TUMBLER / SNAPPER END ************************************************/ - - - -/*** Low level stuff *********************************************************/ - -/* - * PCI PowerMac, with AWACS, Screamer, Burgundy, DACA or Tumbler and DBDMA. - */ -static void *PMacAlloc(unsigned int size, gfp_t flags) -{ - return kmalloc(size, flags); -} - -static void PMacFree(void *ptr, unsigned int size) -{ - kfree(ptr); -} - -static int __init PMacIrqInit(void) -{ - if (awacs) - if (request_irq(awacs_irq, pmac_awacs_intr, 0, "Built-in Sound misc", NULL)) - return 0; - if (request_irq(awacs_tx_irq, pmac_awacs_tx_intr, 0, "Built-in Sound out", NULL) - || request_irq(awacs_rx_irq, pmac_awacs_rx_intr, 0, "Built-in Sound in", NULL)) - return 0; - return 1; -} - -#ifdef MODULE -static void PMacIrqCleanup(void) -{ - /* turn off input & output dma */ - DBDMA_DO_STOP(awacs_txdma); - DBDMA_DO_STOP(awacs_rxdma); - - if (awacs) - /* disable interrupts from awacs interface */ - out_le32(&awacs->control, in_le32(&awacs->control) & 0xfff); - - /* Switch off the sound clock */ - pmac_call_feature(PMAC_FTR_SOUND_CHIP_ENABLE, awacs_node, 0, 0); - /* Make sure proper bits are set on pismo & tipb */ - if ((machine_is_compatible("PowerBook3,1") || - machine_is_compatible("PowerBook3,2")) && awacs) { - awacs_reg[1] |= MASK_PAROUT0 | MASK_PAROUT1; - awacs_write(MASK_ADDR1 | awacs_reg[1]); - msleep(200); - } - if (awacs) - free_irq(awacs_irq, NULL); - free_irq(awacs_tx_irq, NULL); - free_irq(awacs_rx_irq, NULL); - - if (awacs) - iounmap(awacs); - if (i2s) - iounmap(i2s); - iounmap(awacs_txdma); - iounmap(awacs_rxdma); - - release_mem_region(awacs_rsrc[0].start, - awacs_rsrc[0].end - awacs_rsrc[0].start + 1); - release_mem_region(awacs_rsrc[1].start, - awacs_rsrc[1].end - awacs_rsrc[1].start + 1); - release_mem_region(awacs_rsrc[2].start, - awacs_rsrc[2].end - awacs_rsrc[2].start + 1); - - kfree(awacs_tx_cmd_space); - kfree(awacs_rx_cmd_space); - kfree(beep_dbdma_cmd_space); - kfree(beep_buf); -#ifdef CONFIG_PM - pmu_unregister_sleep_notifier(&awacs_sleep_notifier); -#endif -} -#endif /* MODULE */ - -static void PMacSilence(void) -{ - /* turn off output dma */ - DBDMA_DO_STOP(awacs_txdma); -} - -/* don't know what to do really - just have to leave it where - * OF left things -*/ - -static int daca_set_frame_rate(void) -{ - if (i2s) { - out_le32(i2s + (I2S_REG_SERIAL_FORMAT >> 2), 0x41190000); - out_le32(i2s + (I2S_REG_DATAWORD_SIZES >> 2), 0x02000200); - } - dmasound.hard.speed = 44100 ; - awacs_rate_index = 0 ; - return 44100 ; -} - -static int awacs_freqs[8] = { - 44100, 29400, 22050, 17640, 14700, 11025, 8820, 7350 -}; -static int awacs_freqs_ok[8] = { 1, 1, 1, 1, 1, 1, 1, 1 }; - -static int -awacs_set_frame_rate(int desired, int catch_r) -{ - int tolerance, i = 8 ; - /* - * If we have a sample rate which is within catchRadius percent - * of the requested value, we don't have to expand the samples. - * Otherwise choose the next higher rate. - * N.B.: burgundy awacs only works at 44100 Hz. - */ - do { - tolerance = catch_r * awacs_freqs[--i] / 100; - if (awacs_freqs_ok[i] - && dmasound.soft.speed <= awacs_freqs[i] + tolerance) - break; - } while (i > 0); - dmasound.hard.speed = awacs_freqs[i]; - awacs_rate_index = i; - - out_le32(&awacs->control, MASK_IEPC | (i << 8) | 0x11 ); - awacs_reg[1] = (awacs_reg[1] & ~MASK_SAMPLERATE) | (i << 3); - awacs_write(awacs_reg[1] | MASK_ADDR1); - return dmasound.hard.speed; -} - -static int -burgundy_set_frame_rate(void) -{ - awacs_rate_index = 0 ; - awacs_reg[1] = (awacs_reg[1] & ~MASK_SAMPLERATE) ; - /* XXX disable error interrupt on burgundy for now */ - out_le32(&awacs->control, MASK_IEPC | 0 | 0x11 | MASK_IEE); - return 44100 ; -} - -static int -set_frame_rate(int desired, int catch_r) -{ - switch (awacs_revision) { - case AWACS_BURGUNDY: - dmasound.hard.speed = burgundy_set_frame_rate(); - break ; - case AWACS_TUMBLER: - case AWACS_SNAPPER: - dmasound.hard.speed = tas_set_frame_rate(); - break ; - case AWACS_DACA: - dmasound.hard.speed = - daca_set_frame_rate(); - break ; - default: - dmasound.hard.speed = awacs_set_frame_rate(desired, - catch_r); - break ; - } - return dmasound.hard.speed ; -} - -static void -awacs_recalibrate(void) -{ - /* Sorry for the horrible delays... I hope to get that improved - * by making the whole PM process asynchronous in a future version - */ - msleep(750); - awacs_reg[1] |= MASK_CMUTE | MASK_AMUTE; - awacs_write(awacs_reg[1] | MASK_RECALIBRATE | MASK_ADDR1); - msleep(1000); - awacs_write(awacs_reg[1] | MASK_ADDR1); -} - -static void PMacInit(void) -{ - int tolerance; - - switch (dmasound.soft.format) { - case AFMT_S16_LE: - case AFMT_U16_LE: - if (hw_can_byteswap) - dmasound.hard.format = AFMT_S16_LE; - else - dmasound.hard.format = AFMT_S16_BE; - break; - default: - dmasound.hard.format = AFMT_S16_BE; - break; - } - dmasound.hard.stereo = 1; - dmasound.hard.size = 16; - - /* set dmasound.hard.speed - on the basis of what we want (soft) - * and the tolerance we'll allow. - */ - set_frame_rate(dmasound.soft.speed, catchRadius) ; - - tolerance = (catchRadius * dmasound.hard.speed) / 100; - if (dmasound.soft.speed >= dmasound.hard.speed - tolerance) { - dmasound.trans_write = &transAwacsNormal; - dmasound.trans_read = &transAwacsNormalRead; - } else { - dmasound.trans_write = &transAwacsExpand; - dmasound.trans_read = &transAwacsExpandRead; - } - - if (awacs) { - if (hw_can_byteswap && (dmasound.hard.format == AFMT_S16_LE)) - out_le32(&awacs->byteswap, BS_VAL); - else - out_le32(&awacs->byteswap, 0); - } - - expand_bal = -dmasound.soft.speed; - expand_read_bal = -dmasound.soft.speed; -} - -static int PMacSetFormat(int format) -{ - int size; - int req_format = format; - - switch (format) { - case AFMT_QUERY: - return dmasound.soft.format; - case AFMT_MU_LAW: - case AFMT_A_LAW: - case AFMT_U8: - case AFMT_S8: - size = 8; - break; - case AFMT_S16_LE: - if(!hw_can_byteswap) - format = AFMT_S16_BE; - case AFMT_S16_BE: - size = 16; - break; - case AFMT_U16_LE: - if(!hw_can_byteswap) - format = AFMT_U16_BE; - case AFMT_U16_BE: - size = 16; - break; - default: /* :-) */ - printk(KERN_ERR "dmasound: unknown format 0x%x, using AFMT_U8\n", - format); - size = 8; - format = AFMT_U8; - } - - if (req_format == format) { - dmasound.soft.format = format; - dmasound.soft.size = size; - if (dmasound.minDev == SND_DEV_DSP) { - dmasound.dsp.format = format; - dmasound.dsp.size = size; - } - } - - return format; -} - -#define AWACS_VOLUME_TO_MASK(x) (15 - ((((x) - 1) * 15) / 99)) -#define AWACS_MASK_TO_VOLUME(y) (100 - ((y) * 99 / 15)) - -static int awacs_get_volume(int reg, int lshift) -{ - int volume; - - volume = AWACS_MASK_TO_VOLUME((reg >> lshift) & 0xf); - volume |= AWACS_MASK_TO_VOLUME(reg & 0xf) << 8; - return volume; -} - -static int awacs_volume_setter(int volume, int n, int mute, int lshift) -{ - int r1, rn; - - if (mute && volume == 0) { - r1 = awacs_reg[1] | mute; - } else { - r1 = awacs_reg[1] & ~mute; - rn = awacs_reg[n] & ~(0xf | (0xf << lshift)); - rn |= ((AWACS_VOLUME_TO_MASK(volume & 0xff) & 0xf) << lshift); - rn |= AWACS_VOLUME_TO_MASK((volume >> 8) & 0xff) & 0xf; - awacs_reg[n] = rn; - awacs_write((n << 12) | rn); - volume = awacs_get_volume(rn, lshift); - } - if (r1 != awacs_reg[1]) { - awacs_reg[1] = r1; - awacs_write(r1 | MASK_ADDR1); - } - return volume; -} - -static int PMacSetVolume(int volume) -{ - printk(KERN_WARNING "Bogus call to PMacSetVolume !\n"); - return 0; -} - -static void awacs_setup_for_beep(int speed) -{ - out_le32(&awacs->control, - (in_le32(&awacs->control) & ~0x1f00) - | ((speed > 0 ? speed : awacs_rate_index) << 8)); - - if (hw_can_byteswap && (dmasound.hard.format == AFMT_S16_LE) && speed == -1) - out_le32(&awacs->byteswap, BS_VAL); - else - out_le32(&awacs->byteswap, 0); -} - -/* CHECK: how much of this *really* needs IRQs masked? */ -static void __PMacPlay(void) -{ - volatile struct dbdma_cmd *cp; - int next_frg, count; - - count = 300 ; /* > two cycles at the lowest sample rate */ - - /* what we want to send next */ - next_frg = (write_sq.front + write_sq.active) % write_sq.max_count; - - if (awacs_beep_state) { - /* sound takes precedence over beeps */ - /* stop the dma channel */ - out_le32(&awacs_txdma->control, (RUN|PAUSE|FLUSH|WAKE) << 16); - while ( (in_le32(&awacs_txdma->status) & RUN) && count--) - udelay(1); - if (awacs) - awacs_setup_for_beep(-1); - out_le32(&awacs_txdma->cmdptr, - virt_to_bus(&(awacs_tx_cmds[next_frg]))); - - beep_playing = 0; - awacs_beep_state = 0; - } - /* this won't allow more than two frags to be in the output queue at - once. (or one, if the max frags is 2 - because count can't exceed - 2 in that case) - */ - while (write_sq.active < 2 && write_sq.active < write_sq.count) { - count = (write_sq.count == write_sq.active + 1) ? - write_sq.rear_size:write_sq.block_size ; - if (count < write_sq.block_size) { - if (!write_sq.syncing) /* last block not yet filled,*/ - break; /* and we're not syncing or POST-ed */ - else { - /* pretend the block is full to force a new - block to be started on the next write */ - write_sq.rear_size = write_sq.block_size ; - write_sq.syncing &= ~2 ; /* clear POST */ - } - } - cp = &awacs_tx_cmds[next_frg]; - st_le16(&cp->req_count, count); - st_le16(&cp->xfer_status, 0); - st_le16(&cp->command, OUTPUT_MORE + INTR_ALWAYS); - /* put a STOP at the end of the queue - but only if we have - space for it. This means that, if we under-run and we only - have two fragments, we might re-play sound from an existing - queued frag. I guess the solution to that is not to set two - frags if you are likely to under-run... - */ - if (write_sq.count < write_sq.max_count) { - if (++next_frg >= write_sq.max_count) - next_frg = 0 ; /* wrap */ - /* if we get here then we've underrun so we will stop*/ - st_le16(&awacs_tx_cmds[next_frg].command, DBDMA_STOP); - } - /* set the dbdma controller going, if it is not already */ - if (write_sq.active == 0) - out_le32(&awacs_txdma->cmdptr, virt_to_bus(cp)); - (void)in_le32(&awacs_txdma->status); - out_le32(&awacs_txdma->control, ((RUN|WAKE) << 16) + (RUN|WAKE)); - ++write_sq.active; - } -} - -static void PMacPlay(void) -{ - LOCK(); - if (!awacs_sleeping) { - unsigned long flags; - - spin_lock_irqsave(&dmasound.lock, flags); - __PMacPlay(); - spin_unlock_irqrestore(&dmasound.lock, flags); - } - UNLOCK(); -} - -static void PMacRecord(void) -{ - unsigned long flags; - - if (read_sq.active) - return; - - spin_lock_irqsave(&dmasound.lock, flags); - - /* This is all we have to do......Just start it up. - */ - out_le32(&awacs_rxdma->control, ((RUN|WAKE) << 16) + (RUN|WAKE)); - read_sq.active = 1; - - spin_unlock_irqrestore(&dmasound.lock, flags); -} - -/* if the TX status comes up "DEAD" - reported on some Power Computing machines - we need to re-start the dbdma - but from a different physical start address - and with a different transfer length. It would get very messy to do this - with the normal dbdma_cmd blocks - we would have to re-write the buffer start - addresses each time. So, we will keep a single dbdma_cmd block which can be - fiddled with. - When DEAD status is first reported the content of the faulted dbdma block is - copied into the emergency buffer and we note that the buffer is in use. - we then bump the start physical address by the amount that was successfully - output before it died. - On any subsequent DEAD result we just do the bump-ups (we know that we are - already using the emergency dbdma_cmd). - CHECK: this just tries to "do it". It is possible that we should abandon - xfers when the number of residual bytes gets below a certain value - I can - see that this might cause a loop-forever if too small a transfer causes - DEAD status. However this is a TODO for now - we'll see what gets reported. - When we get a successful transfer result with the emergency buffer we just - pretend that it completed using the original dmdma_cmd and carry on. The - 'next_cmd' field will already point back to the original loop of blocks. -*/ - -static irqreturn_t -pmac_awacs_tx_intr(int irq, void *devid) -{ - int i = write_sq.front; - int stat; - int i_nowrap = write_sq.front; - volatile struct dbdma_cmd *cp; - /* != 0 when we are dealing with a DEAD xfer */ - static int emergency_in_use; - - spin_lock(&dmasound.lock); - while (write_sq.active > 0) { /* we expect to have done something*/ - if (emergency_in_use) /* we are dealing with DEAD xfer */ - cp = emergency_dbdma_cmd ; - else - cp = &awacs_tx_cmds[i]; - stat = ld_le16(&cp->xfer_status); - if (stat & DEAD) { - unsigned short req, res ; - unsigned int phy ; -#ifdef DEBUG_DMASOUND -printk("dmasound_pmac: tx-irq: xfer died - patching it up...\n") ; -#endif - /* to clear DEAD status we must first clear RUN - set it to quiescent to be on the safe side */ - (void)in_le32(&awacs_txdma->status); - out_le32(&awacs_txdma->control, - (RUN|PAUSE|FLUSH|WAKE) << 16); - write_sq.died++ ; - if (!emergency_in_use) { /* new problem */ - memcpy((void *)emergency_dbdma_cmd, (void *)cp, - sizeof(struct dbdma_cmd)); - emergency_in_use = 1; - cp = emergency_dbdma_cmd; - } - /* now bump the values to reflect the amount - we haven't yet shifted */ - req = ld_le16(&cp->req_count); - res = ld_le16(&cp->res_count); - phy = ld_le32(&cp->phy_addr); - phy += (req - res); - st_le16(&cp->req_count, res); - st_le16(&cp->res_count, 0); - st_le16(&cp->xfer_status, 0); - st_le32(&cp->phy_addr, phy); - st_le32(&cp->cmd_dep, virt_to_bus(&awacs_tx_cmds[(i+1)%write_sq.max_count])); - st_le16(&cp->command, OUTPUT_MORE | BR_ALWAYS | INTR_ALWAYS); - - /* point at our patched up command block */ - out_le32(&awacs_txdma->cmdptr, virt_to_bus(cp)); - /* we must re-start the controller */ - (void)in_le32(&awacs_txdma->status); - /* should complete clearing the DEAD status */ - out_le32(&awacs_txdma->control, - ((RUN|WAKE) << 16) + (RUN|WAKE)); - break; /* this block is still going */ - } - if ((stat & ACTIVE) == 0) - break; /* this frame is still going */ - if (emergency_in_use) - emergency_in_use = 0 ; /* done that */ - --write_sq.count; - --write_sq.active; - i_nowrap++; - if (++i >= write_sq.max_count) - i = 0; - } - - /* if we stopped and we were not sync-ing - then we under-ran */ - if( write_sq.syncing == 0 ){ - stat = in_le32(&awacs_txdma->status) ; - /* we hit the dbdma_stop */ - if( (stat & ACTIVE) == 0 ) write_sq.xruns++ ; - } - - /* if we used some data up then wake the writer to supply some more*/ - if (i_nowrap != write_sq.front) - WAKE_UP(write_sq.action_queue); - write_sq.front = i; - - /* but make sure we funnel what we've already got */\ - if (!awacs_sleeping) |