+++ /dev/null
-
-/* This is a modified version of linux/drivers/sound/dmasound.c to
- * support the CS4218 codec on the 8xx TDM port. Thanks to everyone
- * that contributed to the dmasound software (which includes me :-).
- *
- * The CS4218 is configured in Mode 4, sub-mode 0. This provides
- * left/right data only on the TDM port, as a 32-bit word, per frame
- * pulse. The control of the CS4218 is provided by some other means,
- * like the SPI port.
- * Dan Malek (dmalek@jlc.net)
- */
-
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/timer.h>
-#include <linux/major.h>
-#include <linux/fcntl.h>
-#include <linux/errno.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/sound.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-
-#include <asm/system.h>
-#include <asm/irq.h>
-#include <asm/pgtable.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-
-/* Should probably do something different with this path name.....
- * Actually, I should just stop using it...
- */
-#include "cs4218.h"
-#include <linux/soundcard.h>
-
-#include <asm/mpc8xx.h>
-#include <asm/8xx_immap.h>
-#include <asm/commproc.h>
-
-#define DMASND_CS4218 5
-
-#define MAX_CATCH_RADIUS 10
-#define MIN_BUFFERS 4
-#define MIN_BUFSIZE 4
-#define MAX_BUFSIZE 128
-
-#define HAS_8BIT_TABLES
-
-static int sq_unit = -1;
-static int mixer_unit = -1;
-static int state_unit = -1;
-static int irq_installed = 0;
-static char **sound_buffers = NULL;
-static char **sound_read_buffers = NULL;
-
-static DEFINE_SPINLOCK(cs4218_lock);
-
-/* Local copies of things we put in the control register. Output
- * volume, like most codecs is really attenuation.
- */
-static int cs4218_rate_index;
-
-/*
- * 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,
-};
-
-#define BEEP_SPEED 5 /* 22050 Hz sample rate */
-#define BEEP_BUFLEN 512
-#define BEEP_VOLUME 15 /* 0 - 100 */
-
-static int beep_volume = BEEP_VOLUME;
-static int beep_playing = 0;
-static int beep_state = 0;
-static short *beep_buf;
-static void (*orig_mksound)(unsigned int, unsigned int);
-
-/* This is found someplace else......I guess in the keyboard driver
- * we don't include.
- */
-static void (*kd_mksound)(unsigned int, unsigned int);
-
-static int catchRadius = 0;
-static int numBufs = 4, bufSize = 32;
-static int numReadBufs = 4, readbufSize = 32;
-
-
-/* TDM/Serial transmit and receive buffer descriptors.
-*/
-static volatile cbd_t *rx_base, *rx_cur, *tx_base, *tx_cur;
-
-module_param(catchRadius, int, 0);
-module_param(numBufs, int, 0);
-module_param(bufSize, int, 0);
-module_param(numreadBufs, int, 0);
-module_param(readbufSize, int, 0);
-
-#define arraysize(x) (sizeof(x)/sizeof(*(x)))
-#define le2be16(x) (((x)<<8 & 0xff00) | ((x)>>8 & 0x00ff))
-#define le2be16dbl(x) (((x)<<8 & 0xff00ff00) | ((x)>>8 & 0x00ff00ff))
-
-#define IOCTL_IN(arg, ret) \
- do { int error = get_user(ret, (int *)(arg)); \
- if (error) return error; \
- } while (0)
-#define IOCTL_OUT(arg, ret) ioctl_return((int *)(arg), ret)
-
-/* CS4218 serial port control in mode 4.
-*/
-#define CS_INTMASK ((uint)0x40000000)
-#define CS_DO1 ((uint)0x20000000)
-#define CS_LATTEN ((uint)0x1f000000)
-#define CS_RATTEN ((uint)0x00f80000)
-#define CS_MUTE ((uint)0x00040000)
-#define CS_ISL ((uint)0x00020000)
-#define CS_ISR ((uint)0x00010000)
-#define CS_LGAIN ((uint)0x0000f000)
-#define CS_RGAIN ((uint)0x00000f00)
-
-#define CS_LATTEN_SET(X) (((X) & 0x1f) << 24)
-#define CS_RATTEN_SET(X) (((X) & 0x1f) << 19)
-#define CS_LGAIN_SET(X) (((X) & 0x0f) << 12)
-#define CS_RGAIN_SET(X) (((X) & 0x0f) << 8)
-
-#define CS_LATTEN_GET(X) (((X) >> 24) & 0x1f)
-#define CS_RATTEN_GET(X) (((X) >> 19) & 0x1f)
-#define CS_LGAIN_GET(X) (((X) >> 12) & 0x0f)
-#define CS_RGAIN_GET(X) (((X) >> 8) & 0x0f)
-
-/* The control register is effectively write only. We have to keep a copy
- * of what we write.
- */
-static uint cs4218_control;
-
-/* A place to store expanding information.
-*/
-static int expand_bal;
-static int expand_data;
-
-/* Since I can't make the microcode patch work for the SPI, I just
- * clock the bits using software.
- */
-static void sw_spi_init(void);
-static void sw_spi_io(u_char *obuf, u_char *ibuf, uint bcnt);
-static uint cs4218_ctl_write(uint ctlreg);
-
-/*** Some low level helpers **************************************************/
-
-/* 16 bit mu-law */
-
-static short ulaw2dma16[] = {
- -32124, -31100, -30076, -29052, -28028, -27004, -25980, -24956,
- -23932, -22908, -21884, -20860, -19836, -18812, -17788, -16764,
- -15996, -15484, -14972, -14460, -13948, -13436, -12924, -12412,
- -11900, -11388, -10876, -10364, -9852, -9340, -8828, -8316,
- -7932, -7676, -7420, -7164, -6908, -6652, -6396, -6140,
- -5884, -5628, -5372, -5116, -4860, -4604, -4348, -4092,
- -3900, -3772, -3644, -3516, -3388, -3260, -3132, -3004,
- -2876, -2748, -2620, -2492, -2364, -2236, -2108, -1980,
- -1884, -1820, -1756, -1692, -1628, -1564, -1500, -1436,
- -1372, -1308, -1244, -1180, -1116, -1052, -988, -924,
- -876, -844, -812, -780, -748, -716, -684, -652,
- -620, -588, -556, -524, -492, -460, -428, -396,
- -372, -356, -340, -324, -308, -292, -276, -260,
- -244, -228, -212, -196, -180, -164, -148, -132,
- -120, -112, -104, -96, -88, -80, -72, -64,
- -56, -48, -40, -32, -24, -16, -8, 0,
- 32124, 31100, 30076, 29052, 28028, 27004, 25980, 24956,
- 23932, 22908, 21884, 20860, 19836, 18812, 17788, 16764,
- 15996, 15484, 14972, 14460, 13948, 13436, 12924, 12412,
- 11900, 11388, 10876, 10364, 9852, 9340, 8828, 8316,
- 7932, 7676, 7420, 7164, 6908, 6652, 6396, 6140,
- 5884, 5628, 5372, 5116, 4860, 4604, 4348, 4092,
- 3900, 3772, 3644, 3516, 3388, 3260, 3132, 3004,
- 2876, 2748, 2620, 2492, 2364, 2236, 2108, 1980,
- 1884, 1820, 1756, 1692, 1628, 1564, 1500, 1436,
- 1372, 1308, 1244, 1180, 1116, 1052, 988, 924,
- 876, 844, 812, 780, 748, 716, 684, 652,
- 620, 588, 556, 524, 492, 460, 428, 396,
- 372, 356, 340, 324, 308, 292, 276, 260,
- 244, 228, 212, 196, 180, 164, 148, 132,
- 120, 112, 104, 96, 88, 80, 72, 64,
- 56, 48, 40, 32, 24, 16, 8, 0,
-};
-
-/* 16 bit A-law */
-
-static short alaw2dma16[] = {
- -5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736,
- -7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784,
- -2752, -2624, -3008, -2880, -2240, -2112, -2496, -2368,
- -3776, -3648, -4032, -3904, -3264, -3136, -3520, -3392,
- -22016, -20992, -24064, -23040, -17920, -16896, -19968, -18944,
- -30208, -29184, -32256, -31232, -26112, -25088, -28160, -27136,
- -11008, -10496, -12032, -11520, -8960, -8448, -9984, -9472,
- -15104, -14592, -16128, -15616, -13056, -12544, -14080, -13568,
- -344, -328, -376, -360, -280, -264, -312, -296,
- -472, -456, -504, -488, -408, -392, -440, -424,
- -88, -72, -120, -104, -24, -8, -56, -40,
- -216, -200, -248, -232, -152, -136, -184, -168,
- -1376, -1312, -1504, -1440, -1120, -1056, -1248, -1184,
- -1888, -1824, -2016, -1952, -1632, -1568, -1760, -1696,
- -688, -656, -752, -720, -560, -528, -624, -592,
- -944, -912, -1008, -976, -816, -784, -880, -848,
- 5504, 5248, 6016, 5760, 4480, 4224, 4992, 4736,
- 7552, 7296, 8064, 7808, 6528, 6272, 7040, 6784,
- 2752, 2624, 3008, 2880, 2240, 2112, 2496, 2368,
- 3776, 3648, 4032, 3904, 3264, 3136, 3520, 3392,
- 22016, 20992, 24064, 23040, 17920, 16896, 19968, 18944,
- 30208, 29184, 32256, 31232, 26112, 25088, 28160, 27136,
- 11008, 10496, 12032, 11520, 8960, 8448, 9984, 9472,
- 15104, 14592, 16128, 15616, 13056, 12544, 14080, 13568,
- 344, 328, 376, 360, 280, 264, 312, 296,
- 472, 456, 504, 488, 408, 392, 440, 424,
- 88, 72, 120, 104, 24, 8, 56, 40,
- 216, 200, 248, 232, 152, 136, 184, 168,
- 1376, 1312, 1504, 1440, 1120, 1056, 1248, 1184,
- 1888, 1824, 2016, 1952, 1632, 1568, 1760, 1696,
- 688, 656, 752, 720, 560, 528, 624, 592,
- 944, 912, 1008, 976, 816, 784, 880, 848,
-};
-
-
-/*** Translations ************************************************************/
-
-
-static ssize_t cs4218_ct_law(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft);
-static ssize_t cs4218_ct_s8(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft);
-static ssize_t cs4218_ct_u8(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft);
-static ssize_t cs4218_ct_s16(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft);
-static ssize_t cs4218_ct_u16(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft);
-static ssize_t cs4218_ctx_law(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft);
-static ssize_t cs4218_ctx_s8(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft);
-static ssize_t cs4218_ctx_u8(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft);
-static ssize_t cs4218_ctx_s16(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft);
-static ssize_t cs4218_ctx_u16(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft);
-static ssize_t cs4218_ct_s16_read(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft);
-static ssize_t cs4218_ct_u16_read(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft);
-
-
-/*** Low level stuff *********************************************************/
-
-struct cs_sound_settings {
- MACHINE mach; /* machine dependent things */
- SETTINGS hard; /* hardware settings */
- SETTINGS soft; /* software settings */
- SETTINGS dsp; /* /dev/dsp default settings */
- TRANS *trans_write; /* supported translations for playback */
- TRANS *trans_read; /* supported translations for record */
- int volume_left; /* volume (range is machine dependent) */
- int volume_right;
- int bass; /* tone (range is machine dependent) */
- int treble;
- int gain;
- int minDev; /* minor device number currently open */
-};
-
-static struct cs_sound_settings sound;
-
-static void *CS_Alloc(unsigned int size, gfp_t flags);
-static void CS_Free(void *ptr, unsigned int size);
-static int CS_IrqInit(void);
-#ifdef MODULE
-static void CS_IrqCleanup(void);
-#endif /* MODULE */
-static void CS_Silence(void);
-static void CS_Init(void);
-static void CS_Play(void);
-static void CS_Record(void);
-static int CS_SetFormat(int format);
-static int CS_SetVolume(int volume);
-static void cs4218_tdm_tx_intr(void *devid);
-static void cs4218_tdm_rx_intr(void *devid);
-static void cs4218_intr(void *devid);
-static int cs_get_volume(uint reg);
-static int cs_volume_setter(int volume, int mute);
-static int cs_get_gain(uint reg);
-static int cs_set_gain(int gain);
-static void cs_mksound(unsigned int hz, unsigned int ticks);
-static void cs_nosound(unsigned long xx);
-
-/*** Mid level stuff *********************************************************/
-
-
-static void sound_silence(void);
-static void sound_init(void);
-static int sound_set_format(int format);
-static int sound_set_speed(int speed);
-static int sound_set_stereo(int stereo);
-static int sound_set_volume(int volume);
-
-static ssize_t sound_copy_translate(const u_char *userPtr,
- size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft);
-static ssize_t sound_copy_translate_read(const u_char *userPtr,
- size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft);
-
-
-/*
- * /dev/mixer abstraction
- */
-
-struct sound_mixer {
- int busy;
- int modify_counter;
-};
-
-static struct sound_mixer mixer;
-
-static struct sound_queue sq;
-static struct sound_queue read_sq;
-
-#define sq_block_address(i) (sq.buffers[i])
-#define SIGNAL_RECEIVED (signal_pending(current))
-#define NON_BLOCKING(open_mode) (open_mode & O_NONBLOCK)
-#define ONE_SECOND HZ /* in jiffies (100ths of a second) */
-#define NO_TIME_LIMIT 0xffffffff
-
-/*
- * /dev/sndstat
- */
-
-struct sound_state {
- int busy;
- char buf[512];
- int len, ptr;
-};
-
-static struct sound_state state;
-
-/*** Common stuff ********************************************************/
-
-static long long sound_lseek(struct file *file, long long offset, int orig);
-
-/*** Config & Setup **********************************************************/
-
-void dmasound_setup(char *str, int *ints);
-
-/*** Translations ************************************************************/
-
-
-/* ++TeSche: radically changed for new expanding purposes...
- *
- * These two routines now deal with copying/expanding/translating the samples
- * from user space into our buffer at the right frequency. They take care about
- * how much data there's actually to read, how much buffer space there is and
- * to convert samples into the right frequency/encoding. They will only work on
- * complete samples so it may happen they leave some bytes in the input stream
- * if the user didn't write a multiple of the current sample size. They both
- * return the number of bytes they've used from both streams so you may detect
- * such a situation. Luckily all programs should be able to cope with that.
- *
- * I think I've optimized anything as far as one can do in plain C, all
- * variables should fit in registers and the loops are really short. There's
- * one loop for every possible situation. Writing a more generalized and thus
- * parameterized loop would only produce slower code. Feel free to optimize
- * this in assembler if you like. :)
- *
- * I think these routines belong here because they're not yet really hardware
- * independent, especially the fact that the Falcon can play 16bit samples
- * only in stereo is hardcoded in both of them!
- *
- * ++geert: split in even more functions (one per format)
- */
-
-static ssize_t cs4218_ct_law(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft)
-{
- short *table = sound.soft.format == AFMT_MU_LAW ? ulaw2dma16: alaw2dma16;
- ssize_t count, used;
- short *p = (short *) &frame[*frameUsed];
- int val, stereo = sound.soft.stereo;
-
- frameLeft >>= 2;
- if (stereo)
- userCount >>= 1;
- used = count = min(userCount, frameLeft);
- while (count > 0) {
- u_char data;
- if (get_user(data, userPtr++))
- return -EFAULT;
- val = table[data];
- *p++ = val;
- if (stereo) {
- if (get_user(data, userPtr++))
- return -EFAULT;
- val = table[data];
- }
- *p++ = val;
- count--;
- }
- *frameUsed += used * 4;
- return stereo? used * 2: used;
-}
-
-
-static ssize_t cs4218_ct_s8(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft)
-{
- ssize_t count, used;
- short *p = (short *) &frame[*frameUsed];
- int val, stereo = sound.soft.stereo;
-
- frameLeft >>= 2;
- if (stereo)
- userCount >>= 1;
- used = count = min(userCount, frameLeft);
- while (count > 0) {
- u_char data;
- if (get_user(data, userPtr++))
- return -EFAULT;
- val = data << 8;
- *p++ = val;
- if (stereo) {
- if (get_user(data, userPtr++))
- return -EFAULT;
- val = data << 8;
- }
- *p++ = val;
- count--;
- }
- *frameUsed += used * 4;
- return stereo? used * 2: used;
-}
-
-
-static ssize_t cs4218_ct_u8(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft)
-{
- ssize_t count, used;
- short *p = (short *) &frame[*frameUsed];
- int val, stereo = sound.soft.stereo;
-
- frameLeft >>= 2;
- if (stereo)
- userCount >>= 1;
- used = count = min(userCount, frameLeft);
- while (count > 0) {
- u_char data;
- if (get_user(data, userPtr++))
- return -EFAULT;
- val = (data ^ 0x80) << 8;
- *p++ = val;
- if (stereo) {
- if (get_user(data, userPtr++))
- return -EFAULT;
- val = (data ^ 0x80) << 8;
- }
- *p++ = val;
- count--;
- }
- *frameUsed += used * 4;
- return stereo? used * 2: used;
-}
-
-
-/* This is the default format of the codec. Signed, 16-bit stereo
- * generated by an application shouldn't have to be copied at all.
- * We should just get the phsical address of the buffers and update
- * the TDM BDs directly.
- */
-static ssize_t cs4218_ct_s16(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft)
-{
- ssize_t count, used;
- int stereo = sound.soft.stereo;
- short *fp = (short *) &frame[*frameUsed];
-
- frameLeft >>= 2;
- userCount >>= (stereo? 2: 1);
- used = count = min(userCount, frameLeft);
- if (!stereo) {
- short *up = (short *) userPtr;
- while (count > 0) {
- short data;
- if (get_user(data, up++))
- return -EFAULT;
- *fp++ = data;
- *fp++ = data;
- count--;
- }
- } else {
- if (copy_from_user(fp, userPtr, count * 4))
- return -EFAULT;
- }
- *frameUsed += used * 4;
- return stereo? used * 4: used * 2;
-}
-
-static ssize_t cs4218_ct_u16(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft)
-{
- ssize_t count, used;
- int mask = (sound.soft.format == AFMT_U16_LE? 0x0080: 0x8000);
- int stereo = sound.soft.stereo;
- short *fp = (short *) &frame[*frameUsed];
- short *up = (short *) userPtr;
-
- frameLeft >>= 2;
- userCount >>= (stereo? 2: 1);
- used = count = min(userCount, frameLeft);
- while (count > 0) {
- int data;
- if (get_user(data, up++))
- return -EFAULT;
- data ^= mask;
- *fp++ = data;
- if (stereo) {
- if (get_user(data, up++))
- return -EFAULT;
- data ^= mask;
- }
- *fp++ = data;
- count--;
- }
- *frameUsed += used * 4;
- return stereo? used * 4: used * 2;
-}
-
-
-static ssize_t cs4218_ctx_law(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft)
-{
- unsigned short *table = (unsigned short *)
- (sound.soft.format == AFMT_MU_LAW ? ulaw2dma16: alaw2dma16);
- unsigned int data = expand_data;
- unsigned int *p = (unsigned int *) &frame[*frameUsed];
- int bal = expand_bal;
- int hSpeed = sound.hard.speed, sSpeed = sound.soft.speed;
- int utotal, ftotal;
- int stereo = sound.soft.stereo;
-
- frameLeft >>= 2;
- if (stereo)
- userCount >>= 1;
- ftotal = frameLeft;
- utotal = userCount;
- while (frameLeft) {
- u_char c;
- if (bal < 0) {
- if (userCount == 0)
- break;
- if (get_user(c, userPtr++))
- return -EFAULT;
- data = table[c];
- if (stereo) {
- if (get_user(c, userPtr++))
- return -EFAULT;
- data = (data << 16) + table[c];
- } else
- data = (data << 16) + data;
- userCount--;
- bal += hSpeed;
- }
- *p++ = data;
- frameLeft--;
- bal -= sSpeed;
- }
- expand_bal = bal;
- expand_data = data;
- *frameUsed += (ftotal - frameLeft) * 4;
- utotal -= userCount;
- return stereo? utotal * 2: utotal;
-}
-
-
-static ssize_t cs4218_ctx_s8(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft)
-{
- unsigned int *p = (unsigned int *) &frame[*frameUsed];
- unsigned int data = expand_data;
- int bal = expand_bal;
- int hSpeed = sound.hard.speed, sSpeed = sound.soft.speed;
- int stereo = sound.soft.stereo;
- int utotal, ftotal;
-
- frameLeft >>= 2;
- if (stereo)
- userCount >>= 1;
- ftotal = frameLeft;
- utotal = userCount;
- while (frameLeft) {
- u_char c;
- if (bal < 0) {
- if (userCount == 0)
- break;
- if (get_user(c, userPtr++))
- return -EFAULT;
- data = c << 8;
- if (stereo) {
- if (get_user(c, userPtr++))
- return -EFAULT;
- data = (data << 16) + (c << 8);
- } else
- data = (data << 16) + data;
- userCount--;
- bal += hSpeed;
- }
- *p++ = data;
- frameLeft--;
- bal -= sSpeed;
- }
- expand_bal = bal;
- expand_data = data;
- *frameUsed += (ftotal - frameLeft) * 4;
- utotal -= userCount;
- return stereo? utotal * 2: utotal;
-}
-
-
-static ssize_t cs4218_ctx_u8(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft)
-{
- unsigned int *p = (unsigned int *) &frame[*frameUsed];
- unsigned int data = expand_data;
- int bal = expand_bal;
- int hSpeed = sound.hard.speed, sSpeed = sound.soft.speed;
- int stereo = sound.soft.stereo;
- int utotal, ftotal;
-
- frameLeft >>= 2;
- if (stereo)
- userCount >>= 1;
- ftotal = frameLeft;
- utotal = userCount;
- while (frameLeft) {
- u_char c;
- if (bal < 0) {
- if (userCount == 0)
- break;
- if (get_user(c, userPtr++))
- return -EFAULT;
- data = (c ^ 0x80) << 8;
- if (stereo) {
- if (get_user(c, userPtr++))
- return -EFAULT;
- data = (data << 16) + ((c ^ 0x80) << 8);
- } else
- data = (data << 16) + data;
- userCount--;
- bal += hSpeed;
- }
- *p++ = data;
- frameLeft--;
- bal -= sSpeed;
- }
- expand_bal = bal;
- expand_data = data;
- *frameUsed += (ftotal - frameLeft) * 4;
- utotal -= userCount;
- return stereo? utotal * 2: utotal;
-}
-
-
-static ssize_t cs4218_ctx_s16(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft)
-{
- unsigned int *p = (unsigned int *) &frame[*frameUsed];
- unsigned int data = expand_data;
- unsigned short *up = (unsigned short *) userPtr;
- int bal = expand_bal;
- int hSpeed = sound.hard.speed, sSpeed = sound.soft.speed;
- int stereo = sound.soft.stereo;
- int utotal, ftotal;
-
- frameLeft >>= 2;
- userCount >>= (stereo? 2: 1);
- ftotal = frameLeft;
- utotal = userCount;
- while (frameLeft) {
- unsigned short c;
- if (bal < 0) {
- if (userCount == 0)
- break;
- if (get_user(data, up++))
- return -EFAULT;
- if (stereo) {
- if (get_user(c, up++))
- return -EFAULT;
- data = (data << 16) + c;
- } else
- data = (data << 16) + data;
- userCount--;
- bal += hSpeed;
- }
- *p++ = data;
- frameLeft--;
- bal -= sSpeed;
- }
- expand_bal = bal;
- expand_data = data;
- *frameUsed += (ftotal - frameLeft) * 4;
- utotal -= userCount;
- return stereo? utotal * 4: utotal * 2;
-}
-
-
-static ssize_t cs4218_ctx_u16(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft)
-{
- int mask = (sound.soft.format == AFMT_U16_LE? 0x0080: 0x8000);
- unsigned int *p = (unsigned int *) &frame[*frameUsed];
- unsigned int data = expand_data;
- unsigned short *up = (unsigned short *) userPtr;
- int bal = expand_bal;
- int hSpeed = sound.hard.speed, sSpeed = sound.soft.speed;
- int stereo = sound.soft.stereo;
- int utotal, ftotal;
-
- frameLeft >>= 2;
- userCount >>= (stereo? 2: 1);
- ftotal = frameLeft;
- utotal = userCount;
- while (frameLeft) {
- unsigned short c;
- if (bal < 0) {
- if (userCount == 0)
- break;
- if (get_user(data, up++))
- return -EFAULT;
- data ^= mask;
- if (stereo) {
- if (get_user(c, up++))
- return -EFAULT;
- data = (data << 16) + (c ^ mask);
- } else
- data = (data << 16) + data;
- userCount--;
- bal += hSpeed;
- }
- *p++ = data;
- frameLeft--;
- bal -= sSpeed;
- }
- expand_bal = bal;
- expand_data = data;
- *frameUsed += (ftotal - frameLeft) * 4;
- utotal -= userCount;
- return stereo? utotal * 4: utotal * 2;
-}
-
-static ssize_t cs4218_ct_s8_read(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft)
-{
- ssize_t count, used;
- short *p = (short *) &frame[*frameUsed];
- int val, stereo = sound.soft.stereo;
-
- frameLeft >>= 2;
- if (stereo)
- userCount >>= 1;
- used = count = min(userCount, frameLeft);
- while (count > 0) {
- u_char data;
-
- val = *p++;
- data = val >> 8;
- if (put_user(data, (u_char *)userPtr++))
- return -EFAULT;
- if (stereo) {
- val = *p;
- data = val >> 8;
- if (put_user(data, (u_char *)userPtr++))
- return -EFAULT;
- }
- p++;
- count--;
- }
- *frameUsed += used * 4;
- return stereo? used * 2: used;
-}
-
-
-static ssize_t cs4218_ct_u8_read(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft)
-{
- ssize_t count, used;
- short *p = (short *) &frame[*frameUsed];
- int val, stereo = sound.soft.stereo;
-
- frameLeft >>= 2;
- if (stereo)
- userCount >>= 1;
- used = count = min(userCount, frameLeft);
- while (count > 0) {
- u_char data;
-
- val = *p++;
- data = (val >> 8) ^ 0x80;
- if (put_user(data, (u_char *)userPtr++))
- return -EFAULT;
- if (stereo) {
- val = *p;
- data = (val >> 8) ^ 0x80;
- if (put_user(data, (u_char *)userPtr++))
- return -EFAULT;
- }
- p++;
- count--;
- }
- *frameUsed += used * 4;
- return stereo? used * 2: used;
-}
-
-
-static ssize_t cs4218_ct_s16_read(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft)
-{
- ssize_t count, used;
- int stereo = sound.soft.stereo;
- short *fp = (short *) &frame[*frameUsed];
-
- frameLeft >>= 2;
- userCount >>= (stereo? 2: 1);
- used = count = min(userCount, frameLeft);
- if (!stereo) {
- short *up = (short *) userPtr;
- while (count > 0) {
- short data;
- data = *fp;
- if (put_user(data, up++))
- return -EFAULT;
- fp+=2;
- count--;
- }
- } else {
- if (copy_to_user((u_char *)userPtr, fp, count * 4))
- return -EFAULT;
- }
- *frameUsed += used * 4;
- return stereo? used * 4: used * 2;
-}
-
-static ssize_t cs4218_ct_u16_read(const u_char *userPtr, size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft)
-{
- ssize_t count, used;
- int mask = (sound.soft.format == AFMT_U16_LE? 0x0080: 0x8000);
- int stereo = sound.soft.stereo;
- short *fp = (short *) &frame[*frameUsed];
- short *up = (short *) userPtr;
-
- frameLeft >>= 2;
- userCount >>= (stereo? 2: 1);
- used = count = min(userCount, frameLeft);
- while (count > 0) {
- int data;
-
- data = *fp++;
- data ^= mask;
- if (put_user(data, up++))
- return -EFAULT;
- if (stereo) {
- data = *fp;
- data ^= mask;
- if (put_user(data, up++))
- return -EFAULT;
- }
- fp++;
- count--;
- }
- *frameUsed += used * 4;
- return stereo? used * 4: used * 2;
-}
-
-static TRANS transCSNormal = {
- cs4218_ct_law, cs4218_ct_law, cs4218_ct_s8, cs4218_ct_u8,
- cs4218_ct_s16, cs4218_ct_u16, cs4218_ct_s16, cs4218_ct_u16
-};
-
-static TRANS transCSExpand = {
- cs4218_ctx_law, cs4218_ctx_law, cs4218_ctx_s8, cs4218_ctx_u8,
- cs4218_ctx_s16, cs4218_ctx_u16, cs4218_ctx_s16, cs4218_ctx_u16
-};
-
-static TRANS transCSNormalRead = {
- NULL, NULL, cs4218_ct_s8_read, cs4218_ct_u8_read,
- cs4218_ct_s16_read, cs4218_ct_u16_read,
- cs4218_ct_s16_read, cs4218_ct_u16_read
-};
-
-/*** Low level stuff *********************************************************/
-
-static void *CS_Alloc(unsigned int size, gfp_t flags)
-{
- int order;
-
- size >>= 13;
- for (order=0; order < 5; order++) {
- if (size == 0)
- break;
- size >>= 1;
- }
- return (void *)__get_free_pages(flags, order);
-}
-
-static void CS_Free(void *ptr, unsigned int size)
-{
- int order;
-
- size >>= 13;
- for (order=0; order < 5; order++) {
- if (size == 0)
- break;
- size >>= 1;
- }
- free_pages((ulong)ptr, order);
-}
-
-static int __init CS_IrqInit(void)
-{
- cpm_install_handler(CPMVEC_SMC2, cs4218_intr, NULL);
- return 1;
-}
-
-#ifdef MODULE
-static void CS_IrqCleanup(void)
-{
- volatile smc_t *sp;
- volatile cpm8xx_t *cp;
-
- /* First disable transmitter and receiver.
- */
- sp = &cpmp->cp_smc[1];
- sp->smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
-
- /* And now shut down the SMC.
- */
- cp = cpmp; /* Get pointer to Communication Processor */
- cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SMC2,
- CPM_CR_STOP_TX) | CPM_CR_FLG;
- while (cp->cp_cpcr & CPM_CR_FLG);
-
- /* Release the interrupt handler.
- */
- cpm_free_handler(CPMVEC_SMC2);
-
- kfree(beep_buf);
- kd_mksound = orig_mksound;
-}
-#endif /* MODULE */
-
-static void CS_Silence(void)
-{
- volatile smc_t *sp;
-
- /* Disable transmitter.
- */
- sp = &cpmp->cp_smc[1];
- sp->smc_smcmr &= ~SMCMR_TEN;
-}
-
-/* Frequencies depend upon external oscillator. There are two
- * choices, 12.288 and 11.2896 MHz. The RPCG audio supports both through
- * and external control register selection bit.
- */
-static int cs4218_freqs[] = {
- /* 12.288 11.2896 */
- 48000, 44100,
- 32000, 29400,
- 24000, 22050,
- 19200, 17640,
- 16000, 14700,
- 12000, 11025,
- 9600, 8820,
- 8000, 7350
-};
-
-static void CS_Init(void)
-{
- int i, tolerance;
-
- switch (sound.soft.format) {
- case AFMT_S16_LE:
- case AFMT_U16_LE:
- sound.hard.format = AFMT_S16_LE;
- break;
- default:
- sound.hard.format = AFMT_S16_BE;
- break;
- }
- sound.hard.stereo = 1;
- sound.hard.size = 16;
-
- /*
- * 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.
- */
- i = (sizeof(cs4218_freqs) / sizeof(int));
- do {
- tolerance = catchRadius * cs4218_freqs[--i] / 100;
- } while (sound.soft.speed > cs4218_freqs[i] + tolerance && i > 0);
- if (sound.soft.speed >= cs4218_freqs[i] - tolerance)
- sound.trans_write = &transCSNormal;
- else
- sound.trans_write = &transCSExpand;
- sound.trans_read = &transCSNormalRead;
- sound.hard.speed = cs4218_freqs[i];
- cs4218_rate_index = i;
-
- /* The CS4218 has seven selectable clock dividers for the sample
- * clock. The HIOX then provides one of two external rates.
- * An even numbered frequency table index uses the high external
- * clock rate.
- */
- *(uint *)HIOX_CSR4_ADDR &= ~(HIOX_CSR4_AUDCLKHI | HIOX_CSR4_AUDCLKSEL);
- if ((i & 1) == 0)
- *(uint *)HIOX_CSR4_ADDR |= HIOX_CSR4_AUDCLKHI;
- i >>= 1;
- *(uint *)HIOX_CSR4_ADDR |= (i & HIOX_CSR4_AUDCLKSEL);
-
- expand_bal = -sound.soft.speed;
-}
-
-static int CS_SetFormat(int format)
-{
- int size;
-
- switch (format) {
- case AFMT_QUERY:
- return sound.soft.format;
- case AFMT_MU_LAW:
- case AFMT_A_LAW:
- case AFMT_U8:
- case AFMT_S8:
- size = 8;
- break;
- case AFMT_S16_BE:
- case AFMT_U16_BE:
- case AFMT_S16_LE:
- case AFMT_U16_LE:
- size = 16;
- break;
- default: /* :-) */
- printk(KERN_ERR "dmasound: unknown format 0x%x, using AFMT_U8\n",
- format);
- size = 8;
- format = AFMT_U8;
- }
-
- sound.soft.format = format;
- sound.soft.size = size;
- if (sound.minDev == SND_DEV_DSP) {
- sound.dsp.format = format;
- sound.dsp.size = size;
- }
-
- CS_Init();
-
- return format;
-}
-
-/* Volume is the amount of attenuation we tell the codec to impose
- * on the outputs. There are 32 levels, with 0 the "loudest".
- */
-#define CS_VOLUME_TO_MASK(x) (31 - ((((x) - 1) * 31) / 99))
-#define CS_MASK_TO_VOLUME(y) (100 - ((y) * 99 / 31))
-
-static int cs_get_volume(uint reg)
-{
- int volume;
-
- volume = CS_MASK_TO_VOLUME(CS_LATTEN_GET(reg));
- volume |= CS_MASK_TO_VOLUME(CS_RATTEN_GET(reg)) << 8;
- return volume;
-}
-
-static int cs_volume_setter(int volume, int mute)
-{
- uint tempctl;
-
- if (mute && volume == 0) {
- tempctl = cs4218_control | CS_MUTE;
- } else {
- tempctl = cs4218_control & ~CS_MUTE;
- tempctl = tempctl & ~(CS_LATTEN | CS_RATTEN);
- tempctl |= CS_LATTEN_SET(CS_VOLUME_TO_MASK(volume & 0xff));
- tempctl |= CS_RATTEN_SET(CS_VOLUME_TO_MASK((volume >> 8) & 0xff));
- volume = cs_get_volume(tempctl);
- }
- if (tempctl != cs4218_control) {
- cs4218_ctl_write(tempctl);
- }
- return volume;
-}
-
-
-/* Gain has 16 steps from 0 to 15. These are in 1.5dB increments from
- * 0 (no gain) to 22.5 dB.
- */
-#define CS_RECLEVEL_TO_GAIN(v) \
- ((v) < 0 ? 0 : (v) > 100 ? 15 : (v) * 3 / 20)
-#define CS_GAIN_TO_RECLEVEL(v) (((v) * 20 + 2) / 3)
-
-static int cs_get_gain(uint reg)
-{
- int gain;
-
- gain = CS_GAIN_TO_RECLEVEL(CS_LGAIN_GET(reg));
- gain |= CS_GAIN_TO_RECLEVEL(CS_RGAIN_GET(reg)) << 8;
- return gain;
-}
-
-static int cs_set_gain(int gain)
-{
- uint tempctl;
-
- tempctl = cs4218_control & ~(CS_LGAIN | CS_RGAIN);
- tempctl |= CS_LGAIN_SET(CS_RECLEVEL_TO_GAIN(gain & 0xff));
- tempctl |= CS_RGAIN_SET(CS_RECLEVEL_TO_GAIN((gain >> 8) & 0xff));
- gain = cs_get_gain(tempctl);
-
- if (tempctl != cs4218_control) {
- cs4218_ctl_write(tempctl);
- }
- return gain;
-}
-
-static int CS_SetVolume(int volume)
-{
- return cs_volume_setter(volume, CS_MUTE);
-}
-
-static void CS_Play(void)
-{
- int i, count;
- unsigned long flags;
- volatile cbd_t *bdp;
- volatile cpm8xx_t *cp;
-
- /* Protect buffer */
- spin_lock_irqsave(&cs4218_lock, flags);
-#if 0
- if (awacs_beep_state) {
- /* sound takes precedence over beeps */
- out_le32(&awacs_txdma->control, (RUN|PAUSE|FLUSH|WAKE) << 16);
- out_le32(&awacs->control,
- (in_le32(&awacs->control) & ~0x1f00)
- | (awacs_rate_index << 8));
- out_le32(&awacs->byteswap, sound.hard.format != AFMT_S16_BE);
- out_le32(&awacs_txdma->cmdptr, virt_to_bus(&(awacs_tx_cmds[(sq.front+sq.active) % sq.max_count])));
-
- beep_playing = 0;
- awacs_beep_state = 0;
- }
-#endif
- i = sq.front + sq.active;
- if (i >= sq.max_count)
- i -= sq.max_count;
- while (sq.active < 2 && sq.active < sq.count) {
- count = (sq.count == sq.active + 1)?sq.rear_size:sq.block_size;
- if (count < sq.block_size && !sq.syncing)
- /* last block not yet filled, and we're not syncing. */
- break;
-
- bdp = &tx_base[i];
- bdp->cbd_datlen = count;
-
- flush_dcache_range((ulong)sound_buffers[i],
- (ulong)(sound_buffers[i] + count));
-
- if (++i >= sq.max_count)
- i = 0;
-
- if (sq.active == 0) {
- /* The SMC does not load its fifo until the first
- * TDM frame pulse, so the transmit data gets shifted
- * by one word. To compensate for this, we incorrectly
- * transmit the first buffer and shorten it by one
- * word. Subsequent buffers are then aligned properly.
- */
- bdp->cbd_datlen -= 2;
-
- /* Start up the SMC Transmitter.
- */
- cp = cpmp;
- cp->cp_smc[1].smc_smcmr |= SMCMR_TEN;
- cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SMC2,
- CPM_CR_RESTART_TX) | CPM_CR_FLG;
- while (cp->cp_cpcr & CPM_CR_FLG);
- }
-
- /* Buffer is ready now.
- */
- bdp->cbd_sc |= BD_SC_READY;
-
- ++sq.active;
- }
- spin_unlock_irqrestore(&cs4218_lock, flags);
-}
-
-
-static void CS_Record(void)
-{
- unsigned long flags;
- volatile smc_t *sp;
-
- if (read_sq.active)
- return;
-
- /* Protect buffer */
- spin_lock_irqsave(&cs4218_lock, flags);
-
- /* This is all we have to do......Just start it up.
- */
- sp = &cpmp->cp_smc[1];
- sp->smc_smcmr |= SMCMR_REN;
-
- read_sq.active = 1;
-
- spin_unlock_irqrestore(&cs4218_lock, flags);
-}
-
-
-static void
-cs4218_tdm_tx_intr(void *devid)
-{
- int i = sq.front;
- volatile cbd_t *bdp;
-
- while (sq.active > 0) {
- bdp = &tx_base[i];
- if (bdp->cbd_sc & BD_SC_READY)
- break; /* this frame is still going */
- --sq.count;
- --sq.active;
- if (++i >= sq.max_count)
- i = 0;
- }
- if (i != sq.front)
- WAKE_UP(sq.action_queue);
- sq.front = i;
-
- CS_Play();
-
- if (!sq.active)
- WAKE_UP(sq.sync_queue);
-}
-
-
-static void
-cs4218_tdm_rx_intr(void *devid)
-{
-
- /* We want to blow 'em off when shutting down.
- */
- if (read_sq.active == 0)
- return;
-
- /* Check multiple buffers in case we were held off from
- * interrupt processing for a long time. Geeze, I really hope
- * this doesn't happen.
- */
- while ((rx_base[read_sq.rear].cbd_sc & BD_SC_EMPTY) == 0) {
-
- /* Invalidate the data cache range for this buffer.
- */
- invalidate_dcache_range(
- (uint)(sound_read_buffers[read_sq.rear]),
- (uint)(sound_read_buffers[read_sq.rear] + read_sq.block_size));
-
- /* Make buffer available again and move on.
- */
- rx_base[read_sq.rear].cbd_sc |= BD_SC_EMPTY;
- read_sq.rear++;
-
- /* Wrap the buffer ring.
- */
- if (read_sq.rear >= read_sq.max_active)
- read_sq.rear = 0;
-
- /* If we have caught up to the front buffer, bump it.
- * This will cause weird (but not fatal) results if the
- * read loop is currently using this buffer. The user is
- * behind in this case anyway, so weird things are going
- * to happen.
- */
- if (read_sq.rear == read_sq.front) {
- read_sq.front++;
- if (read_sq.front >= read_sq.max_active)
- read_sq.front = 0;
- }
- }
-
- WAKE_UP(read_sq.action_queue);
-}
-
-static void cs_nosound(unsigned long xx)
-{
- unsigned long flags;
-
- /* not sure if this is needed, since hardware command is #if 0'd */
- spin_lock_irqsave(&cs4218_lock, flags);
- if (beep_playing) {
-#if 0
- st_le16(&beep_dbdma_cmd->command, DBDMA_STOP);
-#endif
- beep_playing = 0;
- }
- spin_unlock_irqrestore(&cs4218_lock, flags);
-}
-
-static DEFINE_TIMER(beep_timer, cs_nosound, 0, 0);
-
-static void cs_mksound(unsigned int hz, unsigned int ticks)
-{
- unsigned long flags;
- int beep_speed = BEEP_SPEED;
- int srate = cs4218_freqs[beep_speed];
- int period, ncycles, nsamples;
- int i, j, f;
- short *p;
- static int beep_hz_cache;
- static int beep_nsamples_cache;
- static int beep_volume_cache;
-
- if (hz <= srate / BEEP_BUFLEN || hz > srate / 2) {
-#if 1
- /* this is a hack for broken X server code */
- hz = 750;
- ticks = 12;
-#else
- /* cancel beep currently playing */
- awacs_nosound(0);
- return;
-#endif
- }
- /* lock while modifying beep_timer */
- spin_lock_irqsave(&cs4218_lock, flags);
- del_timer(&beep_timer);
- if (ticks) {
- beep_timer.expires = jiffies + ticks;
- add_timer(&beep_timer);
- }
- if (beep_playing || sq.active || beep_buf == NULL) {
- spin_unlock_irqrestore(&cs4218_lock, flags);
- return; /* too hard, sorry :-( */
- }
- beep_playing = 1;
-#if 0
- st_le16(&beep_dbdma_cmd->command, OUTPUT_MORE + BR_ALWAYS);
-#endif
- spin_unlock_irqrestore(&cs4218_lock, flags);
-
- if (hz == beep_hz_cache && beep_volume == beep_volume_cache) {
- nsamples = beep_nsamples_cache;
- } else {
- period = srate * 256 / hz; /* fixed point */
- ncycles = BEEP_BUFLEN * 256 / period;
- nsamples = (period * ncycles) >> 8;
- f = ncycles * 65536 / nsamples;
- j = 0;
- p = beep_buf;
- for (i = 0; i < nsamples; ++i, p += 2) {
- p[0] = p[1] = beep_wform[j >> 8] * beep_volume;
- j = (j + f) & 0xffff;
- }
- beep_hz_cache = hz;
- beep_volume_cache = beep_volume;
- beep_nsamples_cache = nsamples;
- }
-
-#if 0
- st_le16(&beep_dbdma_cmd->req_count, nsamples*4);
- st_le16(&beep_dbdma_cmd->xfer_status, 0);
- st_le32(&beep_dbdma_cmd->cmd_dep, virt_to_bus(beep_dbdma_cmd));
- st_le32(&beep_dbdma_cmd->phy_addr, virt_to_bus(beep_buf));
- awacs_beep_state = 1;
-
- spin_lock_irqsave(&cs4218_lock, flags);
- if (beep_playing) { /* i.e. haven't been terminated already */
- out_le32(&awacs_txdma->control, (RUN|WAKE|FLUSH|PAUSE) << 16);
- out_le32(&awacs->control,
- (in_le32(&awacs->control) & ~0x1f00)
- | (beep_speed << 8));
- out_le32(&awacs->byteswap, 0);
- out_le32(&awacs_txdma->cmdptr, virt_to_bus(beep_dbdma_cmd));
- out_le32(&awacs_txdma->control, RUN | (RUN << 16));
- }
- spin_unlock_irqrestore(&cs4218_lock, flags);
-#endif
-}
-
-static MACHINE mach_cs4218 = {
- .owner = THIS_MODULE,
- .name = "HIOX CS4218",
- .name2 = "Built-in Sound",
- .dma_alloc = CS_Alloc,
- .dma_free = CS_Free,
- .irqinit = CS_IrqInit,
-#ifdef MODULE
- .irqcleanup = CS_IrqCleanup,
-#endif /* MODULE */
- .init = CS_Init,
- .silence = CS_Silence,
- .setFormat = CS_SetFormat,
- .setVolume = CS_SetVolume,
- .play = CS_Play
-};
-
-
-/*** Mid level stuff *********************************************************/
-
-
-static void sound_silence(void)
-{
- /* update hardware settings one more */
- (*sound.mach.init)();
-
- (*sound.mach.silence)();
-}
-
-
-static void sound_init(void)
-{
- (*sound.mach.init)();
-}
-
-
-static int sound_set_format(int format)
-{
- return(*sound.mach.setFormat)(format);
-}
-
-
-static int sound_set_speed(int speed)
-{
- if (speed < 0)
- return(sound.soft.speed);
-
- sound.soft.speed = speed;
- (*sound.mach.init)();
- if (sound.minDev == SND_DEV_DSP)
- sound.dsp.speed = sound.soft.speed;
-
- return(sound.soft.speed);
-}
-
-
-static int sound_set_stereo(int stereo)
-{
- if (stereo < 0)
- return(sound.soft.stereo);
-
- stereo = !!stereo; /* should be 0 or 1 now */
-
- sound.soft.stereo = stereo;
- if (sound.minDev == SND_DEV_DSP)
- sound.dsp.stereo = stereo;
- (*sound.mach.init)();
-
- return(stereo);
-}
-
-
-static int sound_set_volume(int volume)
-{
- return(*sound.mach.setVolume)(volume);
-}
-
-static ssize_t sound_copy_translate(const u_char *userPtr,
- size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft)
-{
- ssize_t (*ct_func)(const u_char *, size_t, u_char *, ssize_t *, ssize_t) = NULL;
-
- switch (sound.soft.format) {
- case AFMT_MU_LAW:
- ct_func = sound.trans_write->ct_ulaw;
- break;
- case AFMT_A_LAW:
- ct_func = sound.trans_write->ct_alaw;
- break;
- case AFMT_S8:
- ct_func = sound.trans_write->ct_s8;
- break;
- case AFMT_U8:
- ct_func = sound.trans_write->ct_u8;
- break;
- case AFMT_S16_BE:
- ct_func = sound.trans_write->ct_s16be;
- break;
- case AFMT_U16_BE:
- ct_func = sound.trans_write->ct_u16be;
- break;
- case AFMT_S16_LE:
- ct_func = sound.trans_write->ct_s16le;
- break;
- case AFMT_U16_LE:
- ct_func = sound.trans_write->ct_u16le;
- break;
- }
- if (ct_func)
- return ct_func(userPtr, userCount, frame, frameUsed, frameLeft);
- else
- return 0;
-}
-
-static ssize_t sound_copy_translate_read(const u_char *userPtr,
- size_t userCount,
- u_char frame[], ssize_t *frameUsed,
- ssize_t frameLeft)
-{
- ssize_t (*ct_func)(const u_char *, size_t, u_char *, ssize_t *, ssize_t) = NULL;
-
- switch (sound.soft.format) {
- case AFMT_MU_LAW:
- ct_func = sound.trans_read->ct_ulaw;
- break;
- case AFMT_A_LAW:
- ct_func = sound.trans_read->ct_alaw;
- break;
- case AFMT_S8:
- ct_func = sound.trans_read->ct_s8;
- break;
- case AFMT_U8:
- ct_func = sound.trans_read->ct_u8;
- break;
- case AFMT_S16_BE:
- ct_func = sound.trans_read->ct_s16be;
- break;
- case AFMT_U16_BE:
- ct_func = sound.trans_read->ct_u16be;
- break;
- case AFMT_S16_LE:
- ct_func = sound.trans_read->ct_s16le;
- break;
- case AFMT_U16_LE:
- ct_func = sound.trans_read->ct_u16le;
- break;
- }
- if (ct_func)
- return ct_func(userPtr, userCount, frame, frameUsed, frameLeft);
- else
- return 0;
-}
-
-
-/*
- * /dev/mixer abstraction
- */
-
-static int mixer_open(struct inode *inode, struct file *file)
-{
- mixer.busy = 1;
- return nonseekable_open(inode, file);
-}
-
-
-static int mixer_release(struct inode *inode, struct file *file)
-{
- mixer.busy = 0;
- return 0;
-}
-
-
-static int mixer_ioctl(struct inode *inode, struct file *file, u_int cmd,
- u_long arg)
-{
- int data;
- uint tmpcs;
-
- if (_SIOC_DIR(cmd) & _SIOC_WRITE)
- mixer.modify_counter++;
- if (cmd == OSS_GETVERSION)
- return IOCTL_OUT(arg, SOUND_VERSION);
- switch (cmd) {
- case SOUND_MIXER_INFO: {
- mixer_info info;
- strlcpy(info.id, "CS4218_TDM", sizeof(info.id));
- strlcpy(info.name, "CS4218_TDM", sizeof(info.name));
- info.name[sizeof(info.name)-1] = 0;
- info.modify_counter = mixer.modify_counter;
- if (copy_to_user((int *)arg, &info, sizeof(info)))
- return -EFAULT;
- return 0;
- }
- case SOUND_MIXER_READ_DEVMASK:
- data = SOUND_MASK_VOLUME | SOUND_MASK_LINE
- | SOUND_MASK_MIC | SOUND_MASK_RECLEV
- | SOUND_MASK_ALTPCM;
- return IOCTL_OUT(arg, data);
- case SOUND_MIXER_READ_RECMASK:
- data = SOUND_MASK_LINE | SOUND_MASK_MIC;
- return IOCTL_OUT(arg, data);
- case SOUND_MIXER_READ_RECSRC:
- if (cs4218_control & CS_DO1)
- data = SOUND_MASK_LINE;
- else
- data = SOUND_MASK_MIC;
- return IOCTL_OUT(arg, data);
- case SOUND_MIXER_WRITE_RECSRC:
- IOCTL_IN(arg, data);
- data &= (SOUND_MASK_LINE | SOUND_MASK_MIC);
- if (data & SOUND_MASK_LINE)
- tmpcs = cs4218_control |
- (CS_ISL | CS_ISR | CS_DO1);
- if (data & SOUND_MASK_MIC)
- tmpcs = cs4218_control &
- ~(CS_ISL | CS_ISR | CS_DO1);
- if (tmpcs != cs4218_control)
- cs4218_ctl_write(tmpcs);
- return IOCTL_OUT(arg, data);
- case SOUND_MIXER_READ_STEREODEVS:
- data = SOUND_MASK_VOLUME | SOUND_MASK_RECLEV;
- return IOCTL_OUT(arg, data);
- case SOUND_MIXER_READ_CAPS:
- return IOCTL_OUT(arg, 0);
- case SOUND_MIXER_READ_VOLUME:
- data = (cs4218_control & CS_MUTE)? 0:
- cs_get_volume(cs4218_control);
- return IOCTL_OUT(arg, data);
- case SOUND_MIXER_WRITE_VOLUME:
- IOCTL_IN(arg, data);
- return IOCTL_OUT(arg, sound_set_volume(data));
- case SOUND_MIXER_WRITE_ALTPCM: /* really bell volume */
- IOCTL_IN(arg, data);
- beep_volume = data & 0xff;
- /* fall through */
- case SOUND_MIXER_READ_ALTPCM:
- return IOCTL_OUT(arg, beep_volume);
- case SOUND_MIXER_WRITE_RECLEV:
- IOCTL_IN(arg, data);
- data = cs_set_gain(data);
- return IOCTL_OUT(arg, data);
- case SOUND_MIXER_READ_RECLEV:
- data = cs_get_gain(cs4218_control);
- return IOCTL_OUT(arg, data);
- }
-
- return -EINVAL;
-}
-
-
-static const struct file_operations mixer_fops =
-{
- .owner = THIS_MODULE,
- .llseek = sound_lseek,
- .ioctl = mixer_ioctl,
- .open = mixer_open,
- .release = mixer_release,
-};
-
-
-static void __init mixer_init(void)
-{
- mixer_unit = register_sound_mixer(&mixer_fops, -1);
- if (mixer_unit < 0)
- return;
-
- mixer.busy = 0;
- sound.treble = 0;
- sound.bass = 0;
-
- /* Set Line input, no gain, no attenuation.
- */
- cs4218_control = CS_ISL | CS_ISR | CS_DO1;
- cs4218_control |= CS_LGAIN_SET(0) | CS_RGAIN_SET(0);
- cs4218_control |= CS_LATTEN_SET(0) | CS_RATTEN_SET(0);
- cs4218_ctl_write(cs4218_control);
-}
-
-
-/*
- * Sound queue stuff, the heart of the driver
- */
-
-
-static int sq_allocate_buffers(void)
-{
- int i;
-
- if (sound_buffers)
- return 0;
- sound_buffers = kmalloc (numBufs * sizeof(char *), GFP_KERNEL);
- if (!sound_buffers)
- return -ENOMEM;
- for (i = 0; i < numBufs; i++) {
- sound_buffers[i] = sound.mach.dma_alloc (bufSize << 10, GFP_KERNEL);
- if (!sound_buffers[i]) {
- while (i--)
- sound.mach.dma_free (sound_buffers[i], bufSize << 10);
- kfree (sound_buffers);
- sound_buffers = 0;
- return -ENOMEM;
- }
- }
- return 0;
-}
-
-
-static void sq_release_buffers(void)
-{
- int i;
-
- if (sound_buffers) {
- for (i = 0; i < numBufs; i++)
- sound.mach.dma_free (sound_buffers[i], bufSize << 10);
- kfree (sound_buffers);
- sound_buffers = 0;
- }
-}
-
-
-static int sq_allocate_read_buffers(void)
-{
- int i;
-
- if (sound_read_buffers)
- return 0;
- sound_read_buffers = kmalloc(numReadBufs * sizeof(char *), GFP_KERNEL);
- if (!sound_read_buffers)
- return -ENOMEM;
- for (i = 0; i < numBufs; i++) {
- sound_read_buffers[i] = sound.mach.dma_alloc (readbufSize<<10,
- GFP_KERNEL);
- if (!sound_read_buffers[i]) {
- while (i--)
- sound.mach.dma_free (sound_read_buffers[i],
- readbufSize << 10);
- kfree (sound_read_buffers);
- sound_read_buffers = 0;
- return -ENOMEM;
- }
- }
- return 0;
-}
-
-static void sq_release_read_buffers(void)
-{
- int i;
-
- if (sound_read_buffers) {
- cpmp->cp_smc[1].smc_smcmr &= ~SMCMR_REN;
- for (i = 0; i < numReadBufs; i++)
- sound.mach.dma_free (sound_read_buffers[i],
- bufSize << 10);
- kfree (sound_read_buffers);
- sound_read_buffers = 0;
- }
-}
-
-
-static void sq_setup(int numBufs, int bufSize, char **write_buffers)
-{
- int i;
- volatile cbd_t *bdp;
- volatile cpm8xx_t *cp;
- volatile smc_t *sp;
-
- /* Make sure the SMC transmit is shut down.
- */
- cp = cpmp;
- sp = &cpmp->cp_smc[1];
- sp->smc_smcmr &= ~SMCMR_TEN;
-
- sq.max_count = numBufs;
- sq.max_active = numBufs;
- sq.block_size = bufSize;
- sq.buffers = write_buffers;
-
- sq.front = sq.count = 0;
- sq.rear = -1;
- sq.syncing = 0;
- sq.active = 0;
-
- bdp = tx_base;
- for (i=0; i<numBufs; i++) {
- bdp->cbd_bufaddr = virt_to_bus(write_buffers[i]);
- bdp++;
- }
-
- /* This causes the SMC to sync up with the first buffer again.
- */
- cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SMC2, CPM_CR_INIT_TX) | CPM_CR_FLG;
- while (cp->cp_cpcr & CPM_CR_FLG);
-}
-
-static void read_sq_setup(int numBufs, int bufSize, char **read_buffers)
-{
- int i;
- volatile cbd_t *bdp;
- volatile cpm8xx_t *cp;
- volatile smc_t *sp;
-
- /* Make sure the SMC receive is shut down.
- */
- cp = cpmp;
- sp = &cpmp->cp_smc[1];
- sp->smc_smcmr &= ~SMCMR_REN;
-
- read_sq.max_count = numBufs;
- read_sq.max_active = numBufs;
- read_sq.block_size = bufSize;
- read_sq.buffers = read_buffers;
-
- read_sq.front = read_sq.count = 0;
- read_sq.rear = 0;
- read_sq.rear_size = 0;
- read_sq.syncing = 0;
- read_sq.active = 0;
-
- bdp = rx_base;
- for (i=0; i<numReadBufs; i++) {
- bdp->cbd_bufaddr = virt_to_bus(read_buffers[i]);
- bdp->cbd_datlen = read_sq.block_size;
- bdp++;
- }
-
- /* This causes the SMC to sync up with the first buffer again.
- */
- cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SMC2, CPM_CR_INIT_RX) | CPM_CR_FLG;
- while (cp->cp_cpcr & CPM_CR_FLG);
-}
-
-
-static void sq_play(void)
-{
- (*sound.mach.play)();
-}
-
-
-/* ++TeSche: radically changed this one too */
-
-static ssize_t sq_write(struct file *file, const char *src, size_t uLeft,
- loff_t *ppos)
-{
- ssize_t uWritten = 0;
- u_char *dest;
- ssize_t uUsed, bUsed, bLeft;
-
- /* ++TeSche: Is something like this necessary?
- * Hey, that's an honest question! Or does any other part of the
- * filesystem already checks this situation? I really don't know.
- */
- if (uLeft == 0)
- return 0;
-
- /* The interrupt doesn't start to play the last, incomplete frame.
- * Thus we can append to it without disabling the interrupts! (Note
- * also that sq.rear isn't affected by the interrupt.)
- */
-
- if (sq.count > 0 && (bLeft = sq.block_size-sq.rear_size) > 0) {
- dest = sq_block_address(sq.rear);
- bUsed = sq.rear_size;
- uUsed = sound_copy_translate(src, uLeft, dest, &bUsed, bLeft);
- if (uUsed <= 0)
- return uUsed;
- src += uUsed;
- uWritten += uUsed;
- uLeft -= uUsed;
- sq.rear_size = bUsed;
- }
-
- do {
- while (sq.count == sq.max_active) {
- sq_play();
- if (NON_BLOCKING(sq.open_mode))
- return uWritten > 0 ? uWritten : -EAGAIN;
- SLEEP(sq.action_queue);
- if (SIGNAL_RECEIVED)
- return uWritten > 0 ? uWritten : -EINTR;
- }
-
- /* Here, we can avoid disabling the interrupt by first
- * copying and translating the data, and then updating
- * the sq variables. Until this is done, the interrupt
- * won't see the new frame and we can work on it
- * undisturbed.
- */
-
- dest = sq_block_address((sq.rear+1) % sq.max_count);
- bUsed = 0;
- bLeft = sq.block_size;
- uUsed = sound_copy_translate(src, uLeft, dest, &bUsed, bLeft);
- if (uUsed <= 0)
- break;
- src += uUsed;
- uWritten += uUsed;
- uLeft -= uUsed;
- if (bUsed) {
- sq.rear = (sq.rear+1) % sq.max_count;
- sq.rear_size = bUsed;
- sq.count++;
- }
- } while (bUsed); /* uUsed may have been 0 */
-
- sq_play();
-
- return uUsed < 0? uUsed: uWritten;
-}
-
-
-/***********/
-
-/* Here is how the values are used for reading.
- * The value 'active' simply indicates the DMA is running. This is
- * done so the driver semantics are DMA starts when the first read is
- * posted. The value 'front' indicates the buffer we should next
- * send to the user. The value 'rear' indicates the buffer the DMA is
- * currently filling. When 'front' == 'rear' the buffer "ring" is
- * empty (we always have an empty available). The 'rear_size' is used
- * to track partial offsets into the current buffer. Right now, I just keep
- * The DMA running. If the reader can't keep up, the interrupt tosses
- * the oldest buffer. We could also shut down the DMA in this case.
- */
-static ssize_t sq_read(struct file *file, char *dst, size_t uLeft,
- loff_t *ppos)
-{
-
- ssize_t uRead, bLeft, bUsed, uUsed;
-
- if (uLeft == 0)
- return 0;
-
- if (!read_sq.active)
- CS_Record(); /* Kick off the record process. */
-
- uRead = 0;
-
- /* Move what the user requests, depending upon other options.
- */
- while (uLeft > 0) {
-
- /* When front == rear, the DMA is not done yet.
- */
- while (read_sq.front == read_sq.rear) {
- if (NON_BLOCKING(read_sq.open_mode)) {
- return uRead > 0 ? uRead : -EAGAIN;
- }
- SLEEP(read_sq.action_queue);
- if (SIGNAL_RECEIVED)
- return uRead > 0 ? uRead : -EINTR;
- }
-
- /* The amount we move is either what is left in the
- * current buffer or what the user wants.
- */
- bLeft = read_sq.block_size - read_sq.rear_size;
- bUsed = read_sq.rear_size;
- uUsed = sound_copy_translate_read(dst, uLeft,
- read_sq.buffers[read_sq.front], &bUsed, bLeft);
- if (uUsed <= 0)
- return uUsed;
- dst += uUsed;
- uRead += uUsed;
- uLeft -= uUsed;
- read_sq.rear_size += bUsed;
- if (read_sq.rear_size >= read_sq.block_size) {
- read_sq.rear_size = 0;
- read_sq.front++;
- if (read_sq.front >= read_sq.max_active)
- read_sq.front = 0;
- }
- }
- return uRead;
-}
-
-static int sq_open(struct inode *inode, struct file *file)
-{
- int rc = 0;
-
- if (file->f_mode & FMODE_WRITE) {
- if (sq.busy) {
- rc = -EBUSY;
- if (NON_BLOCKING(file->f_flags))
- goto err_out;
- rc = -EINTR;
- while (sq.busy) {
- SLEEP(sq.open_queue);
- if (SIGNAL_RECEIVED)
- goto err_out;
- }
- }
- sq.busy = 1; /* Let's play spot-the-race-condition */
-
- if (sq_allocate_buffers()) goto err_out_nobusy;
-
- sq_setup(numBufs, bufSize<<10,sound_buffers);
- sq.open_mode = file->f_mode;
- }
-
-
- if (file->f_mode & FMODE_READ) {
- if (read_sq.busy) {
- rc = -EBUSY;
- if (NON_BLOCKING(file->f_flags))
- goto err_out;
- rc = -EINTR;
- while (read_sq.busy) {
- SLEEP(read_sq.open_queue);
- if (SIGNAL_RECEIVED)
- goto err_out;
- }
- rc = 0;
- }
- read_sq.busy = 1;
- if (sq_allocate_read_buffers()) goto err_out_nobusy;
-
- read_sq_setup(numReadBufs,readbufSize<<10, sound_read_buffers);
- read_sq.open_mode = file->f_mode;
- }
-
- /* Start up the 4218 by:
- * Reset.
- * Enable, unreset.
- */
- *((volatile uint *)HIOX_CSR4_ADDR) &= ~HIOX_CSR4_RSTAUDIO;
- eieio();
- *((volatile uint *)HIOX_CSR4_ADDR) |= HIOX_CSR4_ENAUDIO;
- mdelay(50);
- *((volatile uint *)HIOX_CSR4_ADDR) |= HIOX_CSR4_RSTAUDIO;
-
- /* We need to send the current control word in case someone
- * opened /dev/mixer and changed things while we were shut
- * down. Chances are good the initialization that follows
- * would have done this, but it is still possible it wouldn't.
- */
- cs4218_ctl_write(cs4218_control);
-
- sound.minDev = iminor(inode) & 0x0f;
- sound.soft = sound.dsp;
- sound.hard = sound.dsp;
- sound_init();
- if ((iminor(inode) & 0x0f) == SND_DEV_AUDIO) {
- sound_set_speed(8000);
- sound_set_stereo(0);
- sound_set_format(AFMT_MU_LAW);
- }
-
- return nonseekable_open(inode, file);
-
-err_out_nobusy:
- if (file->f_mode & FMODE_WRITE) {
- sq.busy = 0;
- WAKE_UP(sq.open_queue);
- }
- if (file->f_mode & FMODE_READ) {
- read_sq.busy = 0;
- WAKE_UP(read_sq.open_queue);
- }
-err_out:
- return rc;
-}
-
-
-static void sq_reset(void)
-{
- sound_silence();
- sq.active = 0;
- sq.count = 0;
- sq.front = (sq.rear+1) % sq.max_count;
-#if 0
- init_tdm_buffers();
-#endif
-}
-
-
-static int sq_fsync(struct file *filp, struct dentry *dentry)
-{
- int rc = 0;
-
- sq.syncing = 1;
- sq_play(); /* there may be an incomplete frame waiting */
-
- while (sq.active) {
- SLEEP(sq.sync_queue);
- if (SIGNAL_RECEIVED) {
- /* While waiting for audio output to drain, an
- * interrupt occurred. Stop audio output immediately
- * and clear the queue. */
- sq_reset();
- rc = -EINTR;
- break;
- }
- }
-
- sq.syncing = 0;
- return rc;
-}
-
-static int sq_release(struct inode *inode, struct file *file)
-{
- int rc = 0;
-
- if (sq.busy)
- rc = sq_fsync(file, file->f_path.dentry);
- sound.soft = sound.dsp;
- sound.hard = sound.dsp;
- sound_silence();
-
- sq_release_read_buffers();
- sq_release_buffers();
-
- if (file->f_mode & FMODE_READ) {
- read_sq.busy = 0;
- WAKE_UP(read_sq.open_queue);
- }
-
- if (file->f_mode & FMODE_WRITE) {
- sq.busy = 0;
- WAKE_UP(sq.open_queue);
- }
-
- /* Shut down the SMC.
- */
- cpmp->cp_smc[1].smc_smcmr &= ~(SMCMR_TEN | SMCMR_REN);
-
- /* Shut down the codec.
- */
- *((volatile uint *)HIOX_CSR4_ADDR) |= HIOX_CSR4_RSTAUDIO;
- eieio();
- *((volatile uint *)HIOX_CSR4_ADDR) &= ~HIOX_CSR4_ENAUDIO;
-
- /* Wake up a process waiting for the queue being released.
- * Note: There may be several processes waiting for a call
- * to open() returning. */
-
- return rc;
-}
-
-
-static int sq_ioctl(struct inode *inode, struct file *file, u_int cmd,
- u_long arg)
-{
- u_long fmt;
- int data;
-#if 0
- int size, nbufs;
-#else
- int size;
-#endif
-
- switch (cmd) {
- case SNDCTL_DSP_RESET:
- sq_reset();
- return 0;
- case SNDCTL_DSP_POST:
- case SNDCTL_DSP_SYNC:
- return sq_fsync(file, file->f_path.dentry);
-
- /* ++TeSche: before changing any of these it's
- * probably wise to wait until sound playing has
- * settled down. */
- case SNDCTL_DSP_SPEED:
- sq_fsync(file, file->f_path.dentry);
- IOCTL_IN(arg, data);
- return IOCTL_OUT(arg, sound_set_speed(data));
- case SNDCTL_DSP_STEREO:
- sq_fsync(file, file->f_path.dentry);
- IOCTL_IN(arg, data);
- return IOCTL_OUT(arg, sound_set_stereo(data));
- case SOUND_PCM_WRITE_CHANNELS:
- sq_fsync(file, file->f_path.dentry);
- IOCTL_IN(arg, data);
- return IOCTL_OUT(arg, sound_set_stereo(data-1)+1);
- case SNDCTL_DSP_SETFMT:
- sq_fsync(file, file->f_path.dentry);
- IOCTL_IN(arg, data);
- return IOCTL_OUT(arg, sound_set_format(data));
- case SNDCTL_DSP_GETFMTS:
- fmt = 0;
- if (sound.trans_write) {
- if (sound.trans_write->ct_ulaw)
- fmt |= AFMT_MU_LAW;
- if (sound.trans_write->ct_alaw)
- fmt |= AFMT_A_LAW;
- if (sound.trans_write->ct_s8)
- fmt |= AFMT_S8;
- if (sound.trans_write->ct_u8)
- fmt |= AFMT_U8;
- if (sound.trans_write->ct_s16be)
- fmt |= AFMT_S16_BE;
- if (sound.trans_write->ct_u16be)
- fmt |= AFMT_U16_BE;
- if (sound.trans_write->ct_s16le)
- fmt |= AFMT_S16_LE;
- if (sound.trans_write->ct_u16le)
- fmt |= AFMT_U16_LE;
- }
- return IOCTL_OUT(arg, fmt);
- case SNDCTL_DSP_GETBLKSIZE:
- size = sq.block_size
- * sound.soft.size * (sound.soft.stereo + 1)
- / (sound.hard.size * (sound.hard.stereo + 1));
- return IOCTL_OUT(arg, size);
- case SNDCTL_DSP_SUBDIVIDE:
- break;
-#if 0 /* Sorry can't do this at the moment. The CPM allocated buffers
- * long ago that can't be changed.
- */
- case SNDCTL_DSP_SETFRAGMENT:
- if (sq.count || sq.active || sq.syncing)
- return -EINVAL;
- IOCTL_IN(arg, size);
- nbufs = size >> 16;
- if (nbufs < 2 || nbufs > numBufs)
- nbufs = numBufs;
- size &= 0xffff;
- if (size >= 8 && size <= 30) {
- size = 1 << size;
- size *= sound.hard.size * (sound.hard.stereo + 1);
- size /= sound.soft.size * (sound.soft.stereo + 1);
- if (size > (bufSize << 10))
- size = bufSize << 10;
- } else
- size = bufSize << 10;
- sq_setup(numBufs, size, sound_buffers);
- sq.max_active = nbufs;
- return 0;
-#endif
-
- default:
- return mixer_ioctl(inode, file, cmd, arg);
- }
- return -EINVAL;
-}
-
-
-
-static const struct file_operations sq_fops =
-{
- .owner = THIS_MODULE,
- .llseek = sound_lseek,
- .read = sq_read, /* sq_read */
- .write = sq_write,
- .ioctl = sq_ioctl,
- .open = sq_open,
- .release = sq_release,
-};
-
-
-static void __init sq_init(void)
-{
- sq_unit = register_sound_dsp(&sq_fops, -1);
- if (sq_unit < 0)
- return;
-
- init_waitqueue_head(&sq.action_queue);
- init_waitqueue_head(&sq.open_queue);
- init_waitqueue_head(&sq.sync_queue);
- init_waitqueue_head(&read_sq.action_queue);
- init_waitqueue_head(&read_sq.open_queue);
- init_waitqueue_head(&read_sq.sync_queue);
-
- sq.busy = 0;
- read_sq.busy = 0;
-
- /* whatever you like as startup mode for /dev/dsp,
- * (/dev/audio hasn't got a startup mode). note that
- * once changed a new open() will *not* restore these!
- */
- sound.dsp.format = AFMT_S16_BE;
- sound.dsp.stereo = 1;
- sound.dsp.size = 16;
-
- /* set minimum rate possible without expanding */
- sound.dsp.speed = 8000;
-
- /* before the first open to /dev/dsp this wouldn't be set */
- sound.soft = sound.dsp;
- sound.hard = sound.dsp;
-
- sound_silence();
-}
-
-/*
- * /dev/sndstat
- */
-
-
-/* state.buf should not overflow! */
-
-static int state_open(struct inode *inode, struct file *file)
-{
- char *buffer = state.buf, *mach = "", cs4218_buf[50];
- int len = 0;
-
- if (state.busy)
- return -EBUSY;
-
- state.ptr = 0;
- state.busy = 1;
-
- sprintf(cs4218_buf, "Crystal CS4218 on TDM, ");
- mach = cs4218_buf;
-
- len += sprintf(buffer+len, "%sDMA sound driver:\n", mach);
-
- len += sprintf(buffer+len, "\tsound.format = 0x%x", sound.soft.format);
- switch (sound.soft.format) {
- case AFMT_MU_LAW:
- len += sprintf(buffer+len, " (mu-law)");
- break;
- case AFMT_A_LAW:
- len += sprintf(buffer+len, " (A-law)");
- break;
- case AFMT_U8:
- len += sprintf(buffer+len, " (unsigned 8 bit)");
- break;
- case AFMT_S8:
- len += sprintf(buffer+len, " (signed 8 bit)");
- break;
- case AFMT_S16_BE:
- len += sprintf(buffer+len, " (signed 16 bit big)");
- break;
- case AFMT_U16_BE:
- len += sprintf(buffer+len, " (unsigned 16 bit big)");
- break;
- case AFMT_S16_LE:
- len += sprintf(buffer+len, " (signed 16 bit little)");
- break;
- case AFMT_U16_LE:
- len += sprintf(buffer+len, " (unsigned 16 bit little)");
- break;
- }
- len += sprintf(buffer+len, "\n");
- len += sprintf(buffer+len, "\tsound.speed = %dHz (phys. %dHz)\n",
- sound.soft.speed, sound.hard.speed);
- len += sprintf(buffer+len, "\tsound.stereo = 0x%x (%s)\n",
- sound.soft.stereo, sound.soft.stereo ? "stereo" : "mono");
- len += sprintf(buffer+len, "\tsq.block_size = %d sq.max_count = %d"
- " sq.max_active = %d\n",
- sq.block_size, sq.max_count, sq.max_active);
- len += sprintf(buffer+len, "\tsq.count = %d sq.rear_size = %d\n", sq.count,
- sq.rear_size);
- len += sprintf(buffer+len, "\tsq.active = %d sq.syncing = %d\n",
- sq.active, sq.syncing);
- state.len = len;
- return nonseekable_open(inode, file);
-}
-
-
-static int state_release(struct inode *inode, struct file *file)
-{
- state.busy = 0;
- return 0;
-}
-
-
-static ssize_t state_read(struct file *file, char *buf, size_t count,
- loff_t *ppos)
-{
- int n = state.len - state.ptr;
- if (n > count)
- n = count;
- if (n <= 0)
- return 0;
- if (copy_to_user(buf, &state.buf[state.ptr], n))
- return -EFAULT;
- state.ptr += n;
- return n;
-}
-
-
-static const struct file_operations state_fops =
-{
- .owner = THIS_MODULE,
- .llseek = sound_lseek,
- .read = state_read,
- .open = state_open,
- .release = state_release,
-};
-
-
-static void __init state_init(void)
-{
- state_unit = register_sound_special(&state_fops, SND_DEV_STATUS);
- if (state_unit < 0)
- return;
- state.busy = 0;
-}
-
-
-/*** Common stuff ********************************************************/
-
-static long long sound_lseek(struct file *file, long long offset, int orig)
-{
- return -ESPIPE;
-}
-
-
-/*** Config & Setup **********************************************************/
-
-
-int __init tdm8xx_sound_init(void)
-{
- int i, has_sound;
- uint dp_offset;
- volatile uint *sirp;
- volatile cbd_t *bdp;
- volatile cpm8xx_t *cp;
- volatile smc_t *sp;
- volatile smc_uart_t *up;
- volatile immap_t *immap;
-
- has_sound = 0;
-
- /* Program the SI/TSA to use TDMa, connected to SMC2, for 4 bytes.
- */
- cp = cpmp; /* Get pointer to Communication Processor */
- immap = (immap_t *)IMAP_ADDR; /* and to internal registers */
-
- /* Set all TDMa control bits to zero. This enables most features
- * we want.
- */
- cp->cp_simode &= ~0x00000fff;
-
- /* Enable common receive/transmit clock pins, use IDL format.
- * Sync on falling edge, transmit rising clock, receive falling
- * clock, delay 1 bit on both Tx and Rx. Common Tx/Rx clocks and
- * sync.
- * Connect SMC2 to TSA.
- */
- cp->cp_simode |= 0x80000141;
-
- /* Configure port A pins for TDMa operation.
- * The RPX-Lite (MPC850/823) loses SMC2 when TDM is used.
- */
- immap->im_ioport.iop_papar |= 0x01c0; /* Enable TDMa functions */
- immap->im_ioport.iop_padir |= 0x00c0; /* Enable TDMa Tx/Rx */
- immap->im_ioport.iop_padir &= ~0x0100; /* Enable L1RCLKa */
-
- immap->im_ioport.iop_pcpar |= 0x0800; /* Enable L1RSYNCa */
- immap->im_ioport.iop_pcdir &= ~0x0800;
-
- /* Initialize the SI TDM routing table. We use TDMa only.
- * The receive table and transmit table each have only one
- * entry, to capture/send four bytes after each frame pulse.
- * The 16-bit ram entry is 0000 0001 1000 1111. (SMC2)
- */
- cp->cp_sigmr = 0;
- sirp = (uint *)cp->cp_siram;
-
- *sirp = 0x018f0000; /* Receive entry */
- sirp += 64;
- *sirp = 0x018f0000; /* Tramsmit entry */
-
- /* Enable single TDMa routing.
- */
- cp->cp_sigmr = 0x04;
-
- /* Initialize the SMC for transparent operation.
- */
- sp = &cpmp->cp_smc[1];
- up = (smc_uart_t *)&cp->cp_dparam[PROFF_SMC2];
-
- /* We need to allocate a transmit and receive buffer
- * descriptors from dual port ram.
- */
- dp_addr = cpm_dpalloc(sizeof(cbd_t) * numReadBufs, 8);
-
- /* Set the physical address of the host memory
- * buffers in the buffer descriptors, and the
- * virtual address for us to work with.
- */
- bdp = (cbd_t *)&cp->cp_dpmem[dp_addr];
- up->smc_rbase = dp_offset;
- rx_cur = rx_base = (cbd_t *)bdp;
-
- for (i=0; i<(numReadBufs-1); i++) {
- bdp->cbd_bufaddr = 0;
- bdp->cbd_datlen = 0;
- bdp->cbd_sc = BD_SC_EMPTY | BD_SC_INTRPT;
- bdp++;
- }
- bdp->cbd_bufaddr = 0;
- bdp->cbd_datlen = 0;
- bdp->cbd_sc = BD_SC_WRAP | BD_SC_EMPTY | BD_SC_INTRPT;
-
- /* Now, do the same for the transmit buffers.
- */
- dp_offset = cpm_dpalloc(sizeof(cbd_t) * numBufs, 8);
-
- bdp = (cbd_t *)&cp->cp_dpmem[dp_addr];
- up->smc_tbase = dp_offset;
- tx_cur = tx_base = (cbd_t *)bdp;
-
- for (i=0; i<(numBufs-1); i++) {
- bdp->cbd_bufaddr = 0;
- bdp->cbd_datlen = 0;
- bdp->cbd_sc = BD_SC_INTRPT;
- bdp++;
- }
- bdp->cbd_bufaddr = 0;
- bdp->cbd_datlen = 0;
- bdp->cbd_sc = (BD_SC_WRAP | BD_SC_INTRPT);
-
- /* Set transparent SMC mode.
- * A few things are specific to our application. The codec interface
- * is MSB first, hence the REVD selection. The CD/CTS pulse are
- * used by the TSA to indicate the frame start to the SMC.
- */
- up->smc_rfcr = SCC_EB;
- up->smc_tfcr = SCC_EB;
- up->smc_mrblr = readbufSize * 1024;
-
- /* Set 16-bit reversed data, transparent mode.
- */
- sp->smc_smcmr = smcr_mk_clen(15) |
- SMCMR_SM_TRANS | SMCMR_REVD | SMCMR_BS;
-
- /* Enable and clear events.
- * Because of FIFO delays, all we need is the receive interrupt
- * and we can process both the current receive and current
- * transmit interrupt within a few microseconds of the transmit.
- */
- sp->smc_smce = 0xff;
- sp->smc_smcm = SMCM_TXE | SMCM_TX | SMCM_RX;
-
- /* Send the CPM an initialize command.
- */
- cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SMC2,
- CPM_CR_INIT_TRX) | CPM_CR_FLG;
- while (cp->cp_cpcr & CPM_CR_FLG);
-
- sound.mach = mach_cs4218;
- has_sound = 1;
-
- /* Initialize beep stuff */
- orig_mksound = kd_mksound;
- kd_mksound = cs_mksound;
- beep_buf = kmalloc(BEEP_BUFLEN * 4, GFP_KERNEL);
- if (beep_buf == NULL)
- printk(KERN_WARNING "dmasound: no memory for "
- "beep buffer\n");
-
- if (!has_sound)
- return -ENODEV;
-
- /* Initialize the software SPI.
- */
- sw_spi_init();
-
- /* Set up sound queue, /dev/audio and /dev/dsp. */
-
- /* Set default settings. */
- sq_init();
-
- /* Set up /dev/sndstat. */
- state_init();
-
- /* Set up /dev/mixer. */
- mixer_init();
-
- if (!sound.mach.irqinit()) {
- printk(KERN_ERR "DMA sound driver: Interrupt initialization failed\n");
- return -ENODEV;
- }
-#ifdef MODULE
- irq_installed = 1;
-#endif
-
- printk(KERN_INFO "DMA sound driver installed, using %d buffers of %dk.\n",
- numBufs, bufSize);
-
- return 0;
-}
-
-/* Due to FIFOs and bit delays, the transmit interrupt occurs a few
- * microseconds ahead of the receive interrupt.
- * When we get an interrupt, we service the transmit first, then
- * check for a receive to prevent the overhead of returning through
- * the interrupt handler only to get back here right away during
- * full duplex operation.
- */
-static void
-cs4218_intr(void *dev_id)
-{
- volatile smc_t *sp;
- volatile cpm8xx_t *cp;
-
- sp = &cpmp->cp_smc[1];
-
- if (sp->smc_smce & SCCM_TX) {
- sp->smc_smce = SCCM_TX;
- cs4218_tdm_tx_intr((void *)sp);
- }
-
- if (sp->smc_smce & SCCM_RX) {
- sp->smc_smce = SCCM_RX;
- cs4218_tdm_rx_intr((void *)sp);
- }
-
- if (sp->smc_smce & SCCM_TXE) {
- /* Transmit underrun. This happens with the application
- * didn't keep up sending buffers. We tell the SMC to
- * restart, which will cause it to poll the current (next)
- * BD. If the user supplied data since this occurred,
- * we just start running again. If they didn't, the SMC
- * will poll the descriptor until data is placed there.
- */
- sp->smc_smce = SCCM_TXE;
- cp = cpmp; /* Get pointer to Communication Processor */
- cp->cp_cpcr = mk_cr_cmd(CPM_CR_CH_SMC2,
- CPM_CR_RESTART_TX) | CPM_CR_FLG;
- while (cp->cp_cpcr & CPM_CR_FLG);
- }
-}
-
-
-#define MAXARGS 8 /* Should be sufficient for now */
-
-void __init dmasound_setup(char *str, int *ints)
-{
- /* check the bootstrap parameter for "dmasound=" */
-
- switch (ints[0]) {
- case 3:
- if ((ints[3] < 0) || (ints[3] > MAX_CATCH_RADIUS))
- printk("dmasound_setup: invalid catch radius, using default = %d\n", catchRadius);
- else
- catchRadius = ints[3];
- /* fall through */
- case 2:
- if (ints[1] < MIN_BUFFERS)
- printk("dmasound_setup: invalid number of buffers, using default = %d\n", numBufs);
- else
- numBufs = ints[1];
- if (ints[2] < MIN_BUFSIZE || ints[2] > MAX_BUFSIZE)
- printk("dmasound_setup: invalid buffer size, using default = %d\n", bufSize);
- else
- bufSize = ints[2];
- break;
- case 0:
- break;
- default:
- printk("dmasound_setup: invalid number of arguments\n");
- }
-}
-
-/* Software SPI functions.
- * These are on Port B.
- */
-#define PB_SPICLK ((uint)0x00000002)
-#define PB_SPIMOSI ((uint)0x00000004)
-#define PB_SPIMISO ((uint)0x00000008)
-
-static
-void sw_spi_init(void)
-{
- volatile cpm8xx_t *cp;
- volatile uint *hcsr4;
-
- hcsr4 = (volatile uint *)HIOX_CSR4_ADDR;
- cp = cpmp; /* Get pointer to Communication Processor */
-
- *hcsr4 &= ~HIOX_CSR4_AUDSPISEL; /* Disable SPI select */
-
- /* Make these Port B signals general purpose I/O.
- * First, make sure the clock is low.
- */
- cp->cp_pbdat &= ~PB_SPICLK;
- cp->cp_pbpar &= ~(PB_SPICLK | PB_SPIMOSI | PB_SPIMISO);
-
- /* Clock and Master Output are outputs.
- */
- cp->cp_pbdir |= (PB_SPICLK | PB_SPIMOSI);
-
- /* Master Input.
- */
- cp->cp_pbdir &= ~PB_SPIMISO;
-
-}
-
-/* Write the CS4218 control word out the SPI port. While the
- * the control word is going out, the status word is arriving.
- */
-static
-uint cs4218_ctl_write(uint ctlreg)
-{
- uint status;
-
- sw_spi_io((u_char *)&ctlreg, (u_char *)&status, 4);
-
- /* Shadow the control register.....I guess we could do
- * the same for the status, but for now we just return it
- * and let the caller decide.
- */
- cs4218_control = ctlreg;
- return status;
-}
-
-static
-void sw_spi_io(u_char *obuf, u_char *ibuf, uint bcnt)
-{
- int bits, i;
- u_char outbyte, inbyte;
- volatile cpm8xx_t *cp;
- volatile uint *hcsr4;
-
- hcsr4 = (volatile uint *)HIOX_CSR4_ADDR;
- cp = cpmp; /* Get pointer to Communication Processor */
-
- /* The timing on the bus is pretty slow. Code inefficiency
- * and eieio() is our friend here :-).
- */
- cp->cp_pbdat &= ~PB_SPICLK;
- *hcsr4 |= HIOX_CSR4_AUDSPISEL; /* Enable SPI select */
- eieio();
-
- /* Clock in/out the bytes. Data is valid on the falling edge
- * of the clock. Data is MSB first.
- */
- for (i=0; i<bcnt; i++) {
- outbyte = *obuf++;
- inbyte = 0;
- for (bits=0; bits<8; bits++) {
- eieio();
- cp->cp_pbdat |= PB_SPICLK;
- eieio();
- if (outbyte & 0x80)
- cp->cp_pbdat |= PB_SPIMOSI;
- else
- cp->cp_pbdat &= ~PB_SPIMOSI;
- eieio();
- cp->cp_pbdat &= ~PB_SPICLK;
- eieio();
- outbyte <<= 1;
- inbyte <<= 1;
- if (cp->cp_pbdat & PB_SPIMISO)
- inbyte |= 1;
- }
- *ibuf++ = inbyte;
- }
-
- *hcsr4 &= ~HIOX_CSR4_AUDSPISEL; /* Disable SPI select */
- eieio();
-}
-
-void cleanup_module(void)
-{
- if (irq_installed) {
- sound_silence();
-#ifdef MODULE
- sound.mach.irqcleanup();
-#endif
- }
-
- sq_release_read_buffers();
- sq_release_buffers();
-
- if (mixer_unit >= 0)
- unregister_sound_mixer(mixer_unit);
- if (state_unit >= 0)
- unregister_sound_special(state_unit);
- if (sq_unit >= 0)
- unregister_sound_dsp(sq_unit);
-}
-
-module_init(tdm8xx_sound_init);
-module_exit(cleanup_module);
-
projects / linux-2.6 / commitdiff