+++ /dev/null
-/*******************************************************************************
-*
-* "swarm_cs4297a.c" -- Cirrus Logic-Crystal CS4297a linux audio driver.
-*
-* Copyright (C) 2001 Broadcom Corporation.
-* Copyright (C) 2000,2001 Cirrus Logic Corp.
-* -- adapted from drivers by Thomas Sailer,
-* -- but don't bug him; Problems should go to:
-* -- tom woller (twoller@crystal.cirrus.com) or
-* (audio@crystal.cirrus.com).
-* -- adapted from cs4281 PCI driver for cs4297a on
-* BCM1250 Synchronous Serial interface
-* (Kip Walker, Broadcom Corp.)
-* Copyright (C) 2004 Maciej W. Rozycki
-* Copyright (C) 2005 Ralf Baechle (ralf@linux-mips.org)
-*
-* This program is free software; you can redistribute it and/or modify
-* it under the terms of the GNU General Public License as published by
-* the Free Software Foundation; either version 2 of the License, or
-* (at your option) any later version.
-*
-* This program is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-* GNU General Public License for more details.
-*
-* You should have received a copy of the GNU General Public License
-* along with this program; if not, write to the Free Software
-* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*
-* Module command line parameters:
-* none
-*
-* Supported devices:
-* /dev/dsp standard /dev/dsp device, (mostly) OSS compatible
-* /dev/mixer standard /dev/mixer device, (mostly) OSS compatible
-* /dev/midi simple MIDI UART interface, no ioctl
-*
-* Modification History
-* 08/20/00 trw - silence and no stopping DAC until release
-* 08/23/00 trw - added CS_DBG statements, fix interrupt hang issue on DAC stop.
-* 09/18/00 trw - added 16bit only record with conversion
-* 09/24/00 trw - added Enhanced Full duplex (separate simultaneous
-* capture/playback rates)
-* 10/03/00 trw - fixed mmap (fixed GRECORD and the XMMS mmap test plugin
-* libOSSm.so)
-* 10/11/00 trw - modified for 2.4.0-test9 kernel enhancements (NR_MAP removal)
-* 11/03/00 trw - fixed interrupt loss/stutter, added debug.
-* 11/10/00 bkz - added __devinit to cs4297a_hw_init()
-* 11/10/00 trw - fixed SMP and capture spinlock hang.
-* 12/04/00 trw - cleaned up CSDEBUG flags and added "defaultorder" moduleparm.
-* 12/05/00 trw - fixed polling (myth2), and added underrun swptr fix.
-* 12/08/00 trw - added PM support.
-* 12/14/00 trw - added wrapper code, builds under 2.4.0, 2.2.17-20, 2.2.17-8
-* (RH/Dell base), 2.2.18, 2.2.12. cleaned up code mods by ident.
-* 12/19/00 trw - added PM support for 2.2 base (apm_callback). other PM cleanup.
-* 12/21/00 trw - added fractional "defaultorder" inputs. if >100 then use
-* defaultorder-100 as power of 2 for the buffer size. example:
-* 106 = 2^(106-100) = 2^6 = 64 bytes for the buffer size.
-*
-*******************************************************************************/
-
-#include <linux/list.h>
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/ioport.h>
-#include <linux/sched/signal.h>
-#include <linux/delay.h>
-#include <linux/sound.h>
-#include <linux/slab.h>
-#include <linux/soundcard.h>
-#include <linux/pci.h>
-#include <linux/bitops.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/poll.h>
-#include <linux/mutex.h>
-#include <linux/kernel.h>
-
-#include <asm/byteorder.h>
-#include <asm/dma.h>
-#include <asm/io.h>
-#include <linux/uaccess.h>
-
-#include <asm/sibyte/sb1250_regs.h>
-#include <asm/sibyte/sb1250_int.h>
-#include <asm/sibyte/sb1250_dma.h>
-#include <asm/sibyte/sb1250_scd.h>
-#include <asm/sibyte/sb1250_syncser.h>
-#include <asm/sibyte/sb1250_mac.h>
-#include <asm/sibyte/sb1250.h>
-
-#include "sleep.h"
-
-struct cs4297a_state;
-
-static DEFINE_MUTEX(swarm_cs4297a_mutex);
-static void stop_dac(struct cs4297a_state *s);
-static void stop_adc(struct cs4297a_state *s);
-static void start_dac(struct cs4297a_state *s);
-static void start_adc(struct cs4297a_state *s);
-#undef OSS_DOCUMENTED_MIXER_SEMANTICS
-
-// ---------------------------------------------------------------------
-
-#define CS4297a_MAGIC 0xf00beef1
-
-// buffer order determines the size of the dma buffer for the driver.
-// under Linux, a smaller buffer allows more responsiveness from many of the
-// applications (e.g. games). A larger buffer allows some of the apps (esound)
-// to not underrun the dma buffer as easily. As default, use 32k (order=3)
-// rather than 64k as some of the games work more responsively.
-// log base 2( buff sz = 32k).
-
-//
-// Turn on/off debugging compilation by commenting out "#define CSDEBUG"
-//
-#define CSDEBUG 0
-#if CSDEBUG
-#define CSDEBUG_INTERFACE 1
-#else
-#undef CSDEBUG_INTERFACE
-#endif
-//
-// cs_debugmask areas
-//
-#define CS_INIT 0x00000001 // initialization and probe functions
-#define CS_ERROR 0x00000002 // tmp debugging bit placeholder
-#define CS_INTERRUPT 0x00000004 // interrupt handler (separate from all other)
-#define CS_FUNCTION 0x00000008 // enter/leave functions
-#define CS_WAVE_WRITE 0x00000010 // write information for wave
-#define CS_WAVE_READ 0x00000020 // read information for wave
-#define CS_AC97 0x00000040 // AC97 register access
-#define CS_DESCR 0x00000080 // descriptor management
-#define CS_OPEN 0x00000400 // all open functions in the driver
-#define CS_RELEASE 0x00000800 // all release functions in the driver
-#define CS_PARMS 0x00001000 // functional and operational parameters
-#define CS_IOCTL 0x00002000 // ioctl (non-mixer)
-#define CS_TMP 0x10000000 // tmp debug mask bit
-
-//
-// CSDEBUG is usual mode is set to 1, then use the
-// cs_debuglevel and cs_debugmask to turn on or off debugging.
-// Debug level of 1 has been defined to be kernel errors and info
-// that should be printed on any released driver.
-//
-#if CSDEBUG
-#define CS_DBGOUT(mask,level,x) if((cs_debuglevel >= (level)) && ((mask) & cs_debugmask) ) {x;}
-#else
-#define CS_DBGOUT(mask,level,x)
-#endif
-
-#if CSDEBUG
-static unsigned long cs_debuglevel = 4; // levels range from 1-9
-static unsigned long cs_debugmask = CS_INIT /*| CS_IOCTL*/;
-module_param(cs_debuglevel, int, 0);
-module_param(cs_debugmask, int, 0);
-#endif
-#define CS_TRUE 1
-#define CS_FALSE 0
-
-#define CS_TYPE_ADC 0
-#define CS_TYPE_DAC 1
-
-#define SER_BASE (A_SER_BASE_1 + KSEG1)
-#define SS_CSR(t) (SER_BASE+t)
-#define SS_TXTBL(t) (SER_BASE+R_SER_TX_TABLE_BASE+(t*8))
-#define SS_RXTBL(t) (SER_BASE+R_SER_RX_TABLE_BASE+(t*8))
-
-#define FRAME_BYTES 32
-#define FRAME_SAMPLE_BYTES 4
-
-/* Should this be variable? */
-#define SAMPLE_BUF_SIZE (16*1024)
-#define SAMPLE_FRAME_COUNT (SAMPLE_BUF_SIZE / FRAME_SAMPLE_BYTES)
-/* The driver can explode/shrink the frames to/from a smaller sample
- buffer */
-#define DMA_BLOAT_FACTOR 1
-#define DMA_DESCR (SAMPLE_FRAME_COUNT / DMA_BLOAT_FACTOR)
-#define DMA_BUF_SIZE (DMA_DESCR * FRAME_BYTES)
-
-/* Use the maxmium count (255 == 5.1 ms between interrupts) */
-#define DMA_INT_CNT ((1 << S_DMA_INT_PKTCNT) - 1)
-
-/* Figure this out: how many TX DMAs ahead to schedule a reg access */
-#define REG_LATENCY 150
-
-#define FRAME_TX_US 20
-
-#define SERDMA_NEXTBUF(d,f) (((d)->f+1) % (d)->ringsz)
-
-static const char invalid_magic[] =
- KERN_CRIT "cs4297a: invalid magic value\n";
-
-#define VALIDATE_STATE(s) \
-({ \
- if (!(s) || (s)->magic != CS4297a_MAGIC) { \
- printk(invalid_magic); \
- return -ENXIO; \
- } \
-})
-
-/* AC97 registers */
-#define AC97_MASTER_VOL_STEREO 0x0002 /* Line Out */
-#define AC97_PCBEEP_VOL 0x000a /* none */
-#define AC97_PHONE_VOL 0x000c /* TAD Input (mono) */
-#define AC97_MIC_VOL 0x000e /* MIC Input (mono) */
-#define AC97_LINEIN_VOL 0x0010 /* Line Input (stereo) */
-#define AC97_CD_VOL 0x0012 /* CD Input (stereo) */
-#define AC97_AUX_VOL 0x0016 /* Aux Input (stereo) */
-#define AC97_PCMOUT_VOL 0x0018 /* Wave Output (stereo) */
-#define AC97_RECORD_SELECT 0x001a /* */
-#define AC97_RECORD_GAIN 0x001c
-#define AC97_GENERAL_PURPOSE 0x0020
-#define AC97_3D_CONTROL 0x0022
-#define AC97_POWER_CONTROL 0x0026
-#define AC97_VENDOR_ID1 0x007c
-
-struct list_head cs4297a_devs = { &cs4297a_devs, &cs4297a_devs };
-
-typedef struct serdma_descr_s {
- u64 descr_a;
- u64 descr_b;
-} serdma_descr_t;
-
-typedef unsigned long paddr_t;
-
-typedef struct serdma_s {
- unsigned ringsz;
- serdma_descr_t *descrtab;
- serdma_descr_t *descrtab_end;
- paddr_t descrtab_phys;
-
- serdma_descr_t *descr_add;
- serdma_descr_t *descr_rem;
-
- u64 *dma_buf; // buffer for DMA contents (frames)
- paddr_t dma_buf_phys;
- u16 *sample_buf; // tmp buffer for sample conversions
- u16 *sb_swptr;
- u16 *sb_hwptr;
- u16 *sb_end;
-
- dma_addr_t dmaaddr;
-// unsigned buforder; // Log base 2 of 'dma_buf' size in bytes..
- unsigned numfrag; // # of 'fragments' in the buffer.
- unsigned fragshift; // Log base 2 of fragment size.
- unsigned hwptr, swptr;
- unsigned total_bytes; // # bytes process since open.
- unsigned blocks; // last returned blocks value GETOPTR
- unsigned wakeup; // interrupt occurred on block
- int count;
- unsigned underrun; // underrun flag
- unsigned error; // over/underrun
- wait_queue_head_t wait;
- wait_queue_head_t reg_wait;
- // redundant, but makes calculations easier
- unsigned fragsize; // 2**fragshift..
- unsigned sbufsz; // 2**buforder.
- unsigned fragsamples;
- // OSS stuff
- unsigned mapped:1; // Buffer mapped in cs4297a_mmap()?
- unsigned ready:1; // prog_dmabuf_dac()/adc() successful?
- unsigned endcleared:1;
- unsigned type:1; // adc or dac buffer (CS_TYPE_XXX)
- unsigned ossfragshift;
- int ossmaxfrags;
- unsigned subdivision;
-} serdma_t;
-
-struct cs4297a_state {
- // magic
- unsigned int magic;
-
- struct list_head list;
-
- // soundcore stuff
- int dev_audio;
- int dev_mixer;
-
- // hardware resources
- unsigned int irq;
-
- struct {
- unsigned int rx_ovrrn; /* FIFO */
- unsigned int rx_overflow; /* staging buffer */
- unsigned int tx_underrun;
- unsigned int rx_bad;
- unsigned int rx_good;
- } stats;
-
- // mixer registers
- struct {
- unsigned short vol[10];
- unsigned int recsrc;
- unsigned int modcnt;
- unsigned short micpreamp;
- } mix;
-
- // wave stuff
- struct properties {
- unsigned fmt;
- unsigned fmt_original; // original requested format
- unsigned channels;
- unsigned rate;
- } prop_dac, prop_adc;
- unsigned conversion:1; // conversion from 16 to 8 bit in progress
- unsigned ena;
- spinlock_t lock;
- struct mutex open_mutex;
- struct mutex open_sem_adc;
- struct mutex open_sem_dac;
- fmode_t open_mode;
- wait_queue_head_t open_wait;
- wait_queue_head_t open_wait_adc;
- wait_queue_head_t open_wait_dac;
-
- dma_addr_t dmaaddr_sample_buf;
- unsigned buforder_sample_buf; // Log base 2 of 'dma_buf' size in bytes..
-
- serdma_t dma_dac, dma_adc;
-
- volatile u16 read_value;
- volatile u16 read_reg;
- volatile u64 reg_request;
-};
-
-#if 1
-#define prog_codec(a,b)
-#define dealloc_dmabuf(a,b);
-#endif
-
-static int prog_dmabuf_adc(struct cs4297a_state *s)
-{
- s->dma_adc.ready = 1;
- return 0;
-}
-
-
-static int prog_dmabuf_dac(struct cs4297a_state *s)
-{
- s->dma_dac.ready = 1;
- return 0;
-}
-
-static void clear_advance(void *buf, unsigned bsize, unsigned bptr,
- unsigned len, unsigned char c)
-{
- if (bptr + len > bsize) {
- unsigned x = bsize - bptr;
- memset(((char *) buf) + bptr, c, x);
- bptr = 0;
- len -= x;
- }
- CS_DBGOUT(CS_WAVE_WRITE, 4, printk(KERN_INFO
- "cs4297a: clear_advance(): memset %d at 0x%.8x for %d size \n",
- (unsigned)c, (unsigned)((char *) buf) + bptr, len));
- memset(((char *) buf) + bptr, c, len);
-}
-
-#if CSDEBUG
-
-// DEBUG ROUTINES
-
-#define SOUND_MIXER_CS_GETDBGLEVEL _SIOWR('M',120, int)
-#define SOUND_MIXER_CS_SETDBGLEVEL _SIOWR('M',121, int)
-#define SOUND_MIXER_CS_GETDBGMASK _SIOWR('M',122, int)
-#define SOUND_MIXER_CS_SETDBGMASK _SIOWR('M',123, int)
-
-static void cs_printioctl(unsigned int x)
-{
- unsigned int i;
- unsigned char vidx;
- // Index of mixtable1[] member is Device ID
- // and must be <= SOUND_MIXER_NRDEVICES.
- // Value of array member is index into s->mix.vol[]
- static const unsigned char mixtable1[SOUND_MIXER_NRDEVICES] = {
- [SOUND_MIXER_PCM] = 1, // voice
- [SOUND_MIXER_LINE1] = 2, // AUX
- [SOUND_MIXER_CD] = 3, // CD
- [SOUND_MIXER_LINE] = 4, // Line
- [SOUND_MIXER_SYNTH] = 5, // FM
- [SOUND_MIXER_MIC] = 6, // Mic
- [SOUND_MIXER_SPEAKER] = 7, // Speaker
- [SOUND_MIXER_RECLEV] = 8, // Recording level
- [SOUND_MIXER_VOLUME] = 9 // Master Volume
- };
-
- switch (x) {
- case SOUND_MIXER_CS_GETDBGMASK:
- CS_DBGOUT(CS_IOCTL, 4,
- printk("SOUND_MIXER_CS_GETDBGMASK:\n"));
- break;
- case SOUND_MIXER_CS_GETDBGLEVEL:
- CS_DBGOUT(CS_IOCTL, 4,
- printk("SOUND_MIXER_CS_GETDBGLEVEL:\n"));
- break;
- case SOUND_MIXER_CS_SETDBGMASK:
- CS_DBGOUT(CS_IOCTL, 4,
- printk("SOUND_MIXER_CS_SETDBGMASK:\n"));
- break;
- case SOUND_MIXER_CS_SETDBGLEVEL:
- CS_DBGOUT(CS_IOCTL, 4,
- printk("SOUND_MIXER_CS_SETDBGLEVEL:\n"));
- break;
- case OSS_GETVERSION:
- CS_DBGOUT(CS_IOCTL, 4, printk("OSS_GETVERSION:\n"));
- break;
- case SNDCTL_DSP_SYNC:
- CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SYNC:\n"));
- break;
- case SNDCTL_DSP_SETDUPLEX:
- CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETDUPLEX:\n"));
- break;
- case SNDCTL_DSP_GETCAPS:
- CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETCAPS:\n"));
- break;
- case SNDCTL_DSP_RESET:
- CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_RESET:\n"));
- break;
- case SNDCTL_DSP_SPEED:
- CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SPEED:\n"));
- break;
- case SNDCTL_DSP_STEREO:
- CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_STEREO:\n"));
- break;
- case SNDCTL_DSP_CHANNELS:
- CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_CHANNELS:\n"));
- break;
- case SNDCTL_DSP_GETFMTS:
- CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETFMTS:\n"));
- break;
- case SNDCTL_DSP_SETFMT:
- CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETFMT:\n"));
- break;
- case SNDCTL_DSP_POST:
- CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_POST:\n"));
- break;
- case SNDCTL_DSP_GETTRIGGER:
- CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETTRIGGER:\n"));
- break;
- case SNDCTL_DSP_SETTRIGGER:
- CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETTRIGGER:\n"));
- break;
- case SNDCTL_DSP_GETOSPACE:
- CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETOSPACE:\n"));
- break;
- case SNDCTL_DSP_GETISPACE:
- CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETISPACE:\n"));
- break;
- case SNDCTL_DSP_NONBLOCK:
- CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_NONBLOCK:\n"));
- break;
- case SNDCTL_DSP_GETODELAY:
- CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETODELAY:\n"));
- break;
- case SNDCTL_DSP_GETIPTR:
- CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETIPTR:\n"));
- break;
- case SNDCTL_DSP_GETOPTR:
- CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETOPTR:\n"));
- break;
- case SNDCTL_DSP_GETBLKSIZE:
- CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETBLKSIZE:\n"));
- break;
- case SNDCTL_DSP_SETFRAGMENT:
- CS_DBGOUT(CS_IOCTL, 4,
- printk("SNDCTL_DSP_SETFRAGMENT:\n"));
- break;
- case SNDCTL_DSP_SUBDIVIDE:
- CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SUBDIVIDE:\n"));
- break;
- case SOUND_PCM_READ_RATE:
- CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_READ_RATE:\n"));
- break;
- case SOUND_PCM_READ_CHANNELS:
- CS_DBGOUT(CS_IOCTL, 4,
- printk("SOUND_PCM_READ_CHANNELS:\n"));
- break;
- case SOUND_PCM_READ_BITS:
- CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_READ_BITS:\n"));
- break;
- case SOUND_PCM_WRITE_FILTER:
- CS_DBGOUT(CS_IOCTL, 4,
- printk("SOUND_PCM_WRITE_FILTER:\n"));
- break;
- case SNDCTL_DSP_SETSYNCRO:
- CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETSYNCRO:\n"));
- break;
- case SOUND_PCM_READ_FILTER:
- CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_READ_FILTER:\n"));
- break;
- case SOUND_MIXER_PRIVATE1:
- CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE1:\n"));
- break;
- case SOUND_MIXER_PRIVATE2:
- CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE2:\n"));
- break;
- case SOUND_MIXER_PRIVATE3:
- CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE3:\n"));
- break;
- case SOUND_MIXER_PRIVATE4:
- CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE4:\n"));
- break;
- case SOUND_MIXER_PRIVATE5:
- CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE5:\n"));
- break;
- case SOUND_MIXER_INFO:
- CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_INFO:\n"));
- break;
- case SOUND_OLD_MIXER_INFO:
- CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_OLD_MIXER_INFO:\n"));
- break;
-
- default:
- switch (_IOC_NR(x)) {
- case SOUND_MIXER_VOLUME:
- CS_DBGOUT(CS_IOCTL, 4,
- printk("SOUND_MIXER_VOLUME:\n"));
- break;
- case SOUND_MIXER_SPEAKER:
- CS_DBGOUT(CS_IOCTL, 4,
- printk("SOUND_MIXER_SPEAKER:\n"));
- break;
- case SOUND_MIXER_RECLEV:
- CS_DBGOUT(CS_IOCTL, 4,
- printk("SOUND_MIXER_RECLEV:\n"));
- break;
- case SOUND_MIXER_MIC:
- CS_DBGOUT(CS_IOCTL, 4,
- printk("SOUND_MIXER_MIC:\n"));
- break;
- case SOUND_MIXER_SYNTH:
- CS_DBGOUT(CS_IOCTL, 4,
- printk("SOUND_MIXER_SYNTH:\n"));
- break;
- case SOUND_MIXER_RECSRC:
- CS_DBGOUT(CS_IOCTL, 4,
- printk("SOUND_MIXER_RECSRC:\n"));
- break;
- case SOUND_MIXER_DEVMASK:
- CS_DBGOUT(CS_IOCTL, 4,
- printk("SOUND_MIXER_DEVMASK:\n"));
- break;
- case SOUND_MIXER_RECMASK:
- CS_DBGOUT(CS_IOCTL, 4,
- printk("SOUND_MIXER_RECMASK:\n"));
- break;
- case SOUND_MIXER_STEREODEVS:
- CS_DBGOUT(CS_IOCTL, 4,
- printk("SOUND_MIXER_STEREODEVS:\n"));
- break;
- case SOUND_MIXER_CAPS:
- CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_CAPS:\n"));
- break;
- default:
- i = _IOC_NR(x);
- if (i >= SOUND_MIXER_NRDEVICES
- || !(vidx = mixtable1[i])) {
- CS_DBGOUT(CS_IOCTL, 4, printk
- ("UNKNOWN IOCTL: 0x%.8x NR=%d\n",
- x, i));
- } else {
- CS_DBGOUT(CS_IOCTL, 4, printk
- ("SOUND_MIXER_IOCTL AC9x: 0x%.8x NR=%d\n",
- x, i));
- }
- break;
- }
- }
-}
-#endif
-
-
-static int ser_init(struct cs4297a_state *s)
-{
- int i;
-
- CS_DBGOUT(CS_INIT, 2,
- printk(KERN_INFO "cs4297a: Setting up serial parameters\n"));
-
- __raw_writeq(M_SYNCSER_CMD_RX_RESET | M_SYNCSER_CMD_TX_RESET, SS_CSR(R_SER_CMD));
-
- __raw_writeq(M_SYNCSER_MSB_FIRST, SS_CSR(R_SER_MODE));
- __raw_writeq(32, SS_CSR(R_SER_MINFRM_SZ));
- __raw_writeq(32, SS_CSR(R_SER_MAXFRM_SZ));
-
- __raw_writeq(1, SS_CSR(R_SER_TX_RD_THRSH));
- __raw_writeq(4, SS_CSR(R_SER_TX_WR_THRSH));
- __raw_writeq(8, SS_CSR(R_SER_RX_RD_THRSH));
-
- /* This looks good from experimentation */
- __raw_writeq((M_SYNCSER_TXSYNC_INT | V_SYNCSER_TXSYNC_DLY(0) | M_SYNCSER_TXCLK_EXT |
- M_SYNCSER_RXSYNC_INT | V_SYNCSER_RXSYNC_DLY(1) | M_SYNCSER_RXCLK_EXT | M_SYNCSER_RXSYNC_EDGE),
- SS_CSR(R_SER_LINE_MODE));
-
- /* This looks good from experimentation */
- __raw_writeq(V_SYNCSER_SEQ_COUNT(14) | M_SYNCSER_SEQ_ENABLE | M_SYNCSER_SEQ_STROBE,
- SS_TXTBL(0));
- __raw_writeq(V_SYNCSER_SEQ_COUNT(15) | M_SYNCSER_SEQ_ENABLE | M_SYNCSER_SEQ_BYTE,
- SS_TXTBL(1));
- __raw_writeq(V_SYNCSER_SEQ_COUNT(13) | M_SYNCSER_SEQ_ENABLE | M_SYNCSER_SEQ_BYTE,
- SS_TXTBL(2));
- __raw_writeq(V_SYNCSER_SEQ_COUNT( 0) | M_SYNCSER_SEQ_ENABLE |
- M_SYNCSER_SEQ_STROBE | M_SYNCSER_SEQ_LAST, SS_TXTBL(3));
-
- __raw_writeq(V_SYNCSER_SEQ_COUNT(14) | M_SYNCSER_SEQ_ENABLE | M_SYNCSER_SEQ_STROBE,
- SS_RXTBL(0));
- __raw_writeq(V_SYNCSER_SEQ_COUNT(15) | M_SYNCSER_SEQ_ENABLE | M_SYNCSER_SEQ_BYTE,
- SS_RXTBL(1));
- __raw_writeq(V_SYNCSER_SEQ_COUNT(13) | M_SYNCSER_SEQ_ENABLE | M_SYNCSER_SEQ_BYTE,
- SS_RXTBL(2));
- __raw_writeq(V_SYNCSER_SEQ_COUNT( 0) | M_SYNCSER_SEQ_ENABLE | M_SYNCSER_SEQ_STROBE |
- M_SYNCSER_SEQ_LAST, SS_RXTBL(3));
-
- for (i=4; i<16; i++) {
- /* Just in case... */
- __raw_writeq(M_SYNCSER_SEQ_LAST, SS_TXTBL(i));
- __raw_writeq(M_SYNCSER_SEQ_LAST, SS_RXTBL(i));
- }
-
- return 0;
-}
-
-static int init_serdma(serdma_t *dma)
-{
- CS_DBGOUT(CS_INIT, 2,
- printk(KERN_ERR "cs4297a: desc - %d sbufsize - %d dbufsize - %d\n",
- DMA_DESCR, SAMPLE_BUF_SIZE, DMA_BUF_SIZE));
-
- /* Descriptors */
- dma->ringsz = DMA_DESCR;
- dma->descrtab = kzalloc(dma->ringsz * sizeof(serdma_descr_t), GFP_KERNEL);
- if (!dma->descrtab) {
- printk(KERN_ERR "cs4297a: kzalloc descrtab failed\n");
- return -1;
- }
- dma->descrtab_end = dma->descrtab + dma->ringsz;
- /* XXX bloddy mess, use proper DMA API here ... */
- dma->descrtab_phys = CPHYSADDR((long)dma->descrtab);
- dma->descr_add = dma->descr_rem = dma->descrtab;
-
- /* Frame buffer area */
- dma->dma_buf = kzalloc(DMA_BUF_SIZE, GFP_KERNEL);
- if (!dma->dma_buf) {
- printk(KERN_ERR "cs4297a: kzalloc dma_buf failed\n");
- kfree(dma->descrtab);
- return -1;
- }
- dma->dma_buf_phys = CPHYSADDR((long)dma->dma_buf);
-
- /* Samples buffer area */
- dma->sbufsz = SAMPLE_BUF_SIZE;
- dma->sample_buf = kmalloc(dma->sbufsz, GFP_KERNEL);
- if (!dma->sample_buf) {
- printk(KERN_ERR "cs4297a: kmalloc sample_buf failed\n");
- kfree(dma->descrtab);
- kfree(dma->dma_buf);
- return -1;
- }
- dma->sb_swptr = dma->sb_hwptr = dma->sample_buf;
- dma->sb_end = (u16 *)((void *)dma->sample_buf + dma->sbufsz);
- dma->fragsize = dma->sbufsz >> 1;
-
- CS_DBGOUT(CS_INIT, 4,
- printk(KERN_ERR "cs4297a: descrtab - %08x dma_buf - %x sample_buf - %x\n",
- (int)dma->descrtab, (int)dma->dma_buf,
- (int)dma->sample_buf));
-
- return 0;
-}
-
-static int dma_init(struct cs4297a_state *s)
-{
- int i;
-
- CS_DBGOUT(CS_INIT, 2,
- printk(KERN_INFO "cs4297a: Setting up DMA\n"));
-
- if (init_serdma(&s->dma_adc) ||
- init_serdma(&s->dma_dac))
- return -1;
-
- if (__raw_readq(SS_CSR(R_SER_DMA_DSCR_COUNT_RX))||
- __raw_readq(SS_CSR(R_SER_DMA_DSCR_COUNT_TX))) {
- panic("DMA state corrupted?!");
- }
-
- /* Initialize now - the descr/buffer pairings will never
- change... */
- for (i=0; i<DMA_DESCR; i++) {
- s->dma_dac.descrtab[i].descr_a = M_DMA_SERRX_SOP | V_DMA_DSCRA_A_SIZE(1) |
- (s->dma_dac.dma_buf_phys + i*FRAME_BYTES);
- s->dma_dac.descrtab[i].descr_b = V_DMA_DSCRB_PKT_SIZE(FRAME_BYTES);
- s->dma_adc.descrtab[i].descr_a = V_DMA_DSCRA_A_SIZE(1) |
- (s->dma_adc.dma_buf_phys + i*FRAME_BYTES);
- s->dma_adc.descrtab[i].descr_b = 0;
- }
-
- __raw_writeq((M_DMA_EOP_INT_EN | V_DMA_INT_PKTCNT(DMA_INT_CNT) |
- V_DMA_RINGSZ(DMA_DESCR) | M_DMA_TDX_EN),
- SS_CSR(R_SER_DMA_CONFIG0_RX));
- __raw_writeq(M_DMA_L2CA, SS_CSR(R_SER_DMA_CONFIG1_RX));
- __raw_writeq(s->dma_adc.descrtab_phys, SS_CSR(R_SER_DMA_DSCR_BASE_RX));
-
- __raw_writeq(V_DMA_RINGSZ(DMA_DESCR), SS_CSR(R_SER_DMA_CONFIG0_TX));
- __raw_writeq(M_DMA_L2CA | M_DMA_NO_DSCR_UPDT, SS_CSR(R_SER_DMA_CONFIG1_TX));
- __raw_writeq(s->dma_dac.descrtab_phys, SS_CSR(R_SER_DMA_DSCR_BASE_TX));
-
- /* Prep the receive DMA descriptor ring */
- __raw_writeq(DMA_DESCR, SS_CSR(R_SER_DMA_DSCR_COUNT_RX));
-
- __raw_writeq(M_SYNCSER_DMA_RX_EN | M_SYNCSER_DMA_TX_EN, SS_CSR(R_SER_DMA_ENABLE));
-
- __raw_writeq((M_SYNCSER_RX_SYNC_ERR | M_SYNCSER_RX_OVERRUN | M_SYNCSER_RX_EOP_COUNT),
- SS_CSR(R_SER_INT_MASK));
-
- /* Enable the rx/tx; let the codec warm up to the sync and
- start sending good frames before the receive FIFO is
- enabled */
- __raw_writeq(M_SYNCSER_CMD_TX_EN, SS_CSR(R_SER_CMD));
- udelay(1000);
- __raw_writeq(M_SYNCSER_CMD_RX_EN | M_SYNCSER_CMD_TX_EN, SS_CSR(R_SER_CMD));
-
- /* XXXKW is this magic? (the "1" part) */
- while ((__raw_readq(SS_CSR(R_SER_STATUS)) & 0xf1) != 1)
- ;
-
- CS_DBGOUT(CS_INIT, 4,
- printk(KERN_INFO "cs4297a: status: %08x\n",
- (unsigned int)(__raw_readq(SS_CSR(R_SER_STATUS)) & 0xffffffff)));
-
- return 0;
-}
-
-static int serdma_reg_access(struct cs4297a_state *s, u64 data)
-{
- serdma_t *d = &s->dma_dac;
- u64 *data_p;
- unsigned swptr;
- unsigned long flags;
- serdma_descr_t *descr;
-
- if (s->reg_request) {
- printk(KERN_ERR "cs4297a: attempt to issue multiple reg_access\n");
- return -1;
- }
-
- if (s->ena & FMODE_WRITE) {
- /* Since a writer has the DSP open, we have to mux the
- request in */
- s->reg_request = data;
- oss_broken_sleep_on(&s->dma_dac.reg_wait, MAX_SCHEDULE_TIMEOUT);
- /* XXXKW how can I deal with the starvation case where
- the opener isn't writing? */
- } else {
- /* Be safe when changing ring pointers */
- spin_lock_irqsave(&s->lock, flags);
- if (d->hwptr != d->swptr) {
- printk(KERN_ERR "cs4297a: reg access found bookkeeping error (hw/sw = %d/%d\n",
- d->hwptr, d->swptr);
- spin_unlock_irqrestore(&s->lock, flags);
- return -1;
- }
- swptr = d->swptr;
- d->hwptr = d->swptr = (d->swptr + 1) % d->ringsz;
- spin_unlock_irqrestore(&s->lock, flags);
-
- descr = &d->descrtab[swptr];
- data_p = &d->dma_buf[swptr * 4];
- *data_p = cpu_to_be64(data);
- __raw_writeq(1, SS_CSR(R_SER_DMA_DSCR_COUNT_TX));
- CS_DBGOUT(CS_DESCR, 4,
- printk(KERN_INFO "cs4297a: add_tx %p (%x -> %x)\n",
- data_p, swptr, d->hwptr));
- }
-
- CS_DBGOUT(CS_FUNCTION, 6,
- printk(KERN_INFO "cs4297a: serdma_reg_access()-\n"));
-
- return 0;
-}
-
-//****************************************************************************
-// "cs4297a_read_ac97" -- Reads an AC97 register
-//****************************************************************************
-static int cs4297a_read_ac97(struct cs4297a_state *s, u32 offset,
- u32 * value)
-{
- CS_DBGOUT(CS_AC97, 1,
- printk(KERN_INFO "cs4297a: read reg %2x\n", offset));
- if (serdma_reg_access(s, (0xCLL << 60) | (1LL << 47) | ((u64)(offset & 0x7F) << 40)))
- return -1;
-
- oss_broken_sleep_on(&s->dma_adc.reg_wait, MAX_SCHEDULE_TIMEOUT);
- *value = s->read_value;
- CS_DBGOUT(CS_AC97, 2,
- printk(KERN_INFO "cs4297a: rdr reg %x -> %x\n", s->read_reg, s->read_value));
-
- return 0;
-}
-
-
-//****************************************************************************
-// "cs4297a_write_ac97()"-- writes an AC97 register
-//****************************************************************************
-static int cs4297a_write_ac97(struct cs4297a_state *s, u32 offset,
- u32 value)
-{
- CS_DBGOUT(CS_AC97, 1,
- printk(KERN_INFO "cs4297a: write reg %2x -> %04x\n", offset, value));
- return (serdma_reg_access(s, (0xELL << 60) | ((u64)(offset & 0x7F) << 40) | ((value & 0xffff) << 12)));
-}
-
-static void stop_dac(struct cs4297a_state *s)
-{
- unsigned long flags;
-
- CS_DBGOUT(CS_WAVE_WRITE, 3, printk(KERN_INFO "cs4297a: stop_dac():\n"));
- spin_lock_irqsave(&s->lock, flags);
- s->ena &= ~FMODE_WRITE;
-#if 0
- /* XXXKW what do I really want here? My theory for now is
- that I just flip the "ena" bit, and the interrupt handler
- will stop processing the xmit channel */
- __raw_writeq((s->ena & FMODE_READ) ? M_SYNCSER_DMA_RX_EN : 0,
- SS_CSR(R_SER_DMA_ENABLE));
-#endif
-
- spin_unlock_irqrestore(&s->lock, flags);
-}
-
-
-static void start_dac(struct cs4297a_state *s)
-{
- unsigned long flags;
-
- CS_DBGOUT(CS_FUNCTION, 3, printk(KERN_INFO "cs4297a: start_dac()+\n"));
- spin_lock_irqsave(&s->lock, flags);
- if (!(s->ena & FMODE_WRITE) && (s->dma_dac.mapped ||
- (s->dma_dac.count > 0
- && s->dma_dac.ready))) {
- s->ena |= FMODE_WRITE;
- /* XXXKW what do I really want here? My theory for
- now is that I just flip the "ena" bit, and the
- interrupt handler will start processing the xmit
- channel */
-
- CS_DBGOUT(CS_WAVE_WRITE | CS_PARMS, 8, printk(KERN_INFO
- "cs4297a: start_dac(): start dma\n"));
-
- }
- spin_unlock_irqrestore(&s->lock, flags);
- CS_DBGOUT(CS_FUNCTION, 3,
- printk(KERN_INFO "cs4297a: start_dac()-\n"));
-}
-
-
-static void stop_adc(struct cs4297a_state *s)
-{
- unsigned long flags;
-
- CS_DBGOUT(CS_FUNCTION, 3,
- printk(KERN_INFO "cs4297a: stop_adc()+\n"));
-
- spin_lock_irqsave(&s->lock, flags);
- s->ena &= ~FMODE_READ;
-
- if (s->conversion == 1) {
- s->conversion = 0;
- s->prop_adc.fmt = s->prop_adc.fmt_original;
- }
- /* Nothing to do really, I need to keep the DMA going
- XXXKW when do I get here, and is there more I should do? */
- spin_unlock_irqrestore(&s->lock, flags);
- CS_DBGOUT(CS_FUNCTION, 3,
- printk(KERN_INFO "cs4297a: stop_adc()-\n"));
-}
-
-
-static void start_adc(struct cs4297a_state *s)
-{
- unsigned long flags;
-
- CS_DBGOUT(CS_FUNCTION, 2,
- printk(KERN_INFO "cs4297a: start_adc()+\n"));
-
- if (!(s->ena & FMODE_READ) &&
- (s->dma_adc.mapped || s->dma_adc.count <=
- (signed) (s->dma_adc.sbufsz - 2 * s->dma_adc.fragsize))
- && s->dma_adc.ready) {
- if (s->prop_adc.fmt & AFMT_S8 || s->prop_adc.fmt & AFMT_U8) {
- //
- // now only use 16 bit capture, due to truncation issue
- // in the chip, noticeable distortion occurs.
- // allocate buffer and then convert from 16 bit to
- // 8 bit for the user buffer.
- //
- s->prop_adc.fmt_original = s->prop_adc.fmt;
- if (s->prop_adc.fmt & AFMT_S8) {
- s->prop_adc.fmt &= ~AFMT_S8;
- s->prop_adc.fmt |= AFMT_S16_LE;
- }
- if (s->prop_adc.fmt & AFMT_U8) {
- s->prop_adc.fmt &= ~AFMT_U8;
- s->prop_adc.fmt |= AFMT_U16_LE;
- }
- //
- // prog_dmabuf_adc performs a stop_adc() but that is
- // ok since we really haven't started the DMA yet.
- //
- prog_codec(s, CS_TYPE_ADC);
-
- prog_dmabuf_adc(s);
- s->conversion = 1;
- }
- spin_lock_irqsave(&s->lock, flags);
- s->ena |= FMODE_READ;
- /* Nothing to do really, I am probably already
- DMAing... XXXKW when do I get here, and is there
- more I should do? */
- spin_unlock_irqrestore(&s->lock, flags);
-
- CS_DBGOUT(CS_PARMS, 6, printk(KERN_INFO
- "cs4297a: start_adc(): start adc\n"));
- }
- CS_DBGOUT(CS_FUNCTION, 2,
- printk(KERN_INFO "cs4297a: start_adc()-\n"));
-
-}
-
-
-// call with spinlock held!
-static void cs4297a_update_ptr(struct cs4297a_state *s, int intflag)
-{
- int good_diff, diff, diff2;
- u64 *data_p, data;
- u32 *s_ptr;
- unsigned hwptr;
- u32 status;
- serdma_t *d;
- serdma_descr_t *descr;
-
- // update ADC pointer
- status = intflag ? __raw_readq(SS_CSR(R_SER_STATUS)) : 0;
-
- if ((s->ena & FMODE_READ) || (status & (M_SYNCSER_RX_EOP_COUNT))) {
- d = &s->dma_adc;
- hwptr = (unsigned) (((__raw_readq(SS_CSR(R_SER_DMA_CUR_DSCR_ADDR_RX)) & M_DMA_CURDSCR_ADDR) -
- d->descrtab_phys) / sizeof(serdma_descr_t));
-
- if (s->ena & FMODE_READ) {
- CS_DBGOUT(CS_FUNCTION, 2,
- printk(KERN_INFO "cs4297a: upd_rcv sw->hw->hw %x/%x/%x (int-%d)n",
- d->swptr, d->hwptr, hwptr, intflag));
- /* Number of DMA buffers available for software: */
- diff2 = diff = (d->ringsz + hwptr - d->hwptr) % d->ringsz;
- d->hwptr = hwptr;
- good_diff = 0;
- s_ptr = (u32 *)&(d->dma_buf[d->swptr*4]);
- descr = &d->descrtab[d->swptr];
- while (diff2--) {
- u64 data = be64_to_cpu(*(u64 *)s_ptr);
- u64 descr_a;
- u16 left, right;
- descr_a = descr->descr_a;
- descr->descr_a &= ~M_DMA_SERRX_SOP;
- if ((descr_a & M_DMA_DSCRA_A_ADDR) != CPHYSADDR((long)s_ptr)) {
- printk(KERN_ERR "cs4297a: RX Bad address (read)\n");
- }
- if (((data & 0x9800000000000000) != 0x9800000000000000) ||
- (!(descr_a & M_DMA_SERRX_SOP)) ||
- (G_DMA_DSCRB_PKT_SIZE(descr->descr_b) != FRAME_BYTES)) {
- s->stats.rx_bad++;
- printk(KERN_DEBUG "cs4297a: RX Bad attributes (read)\n");
- continue;
- }
- s->stats.rx_good++;
- if ((data >> 61) == 7) {
- s->read_value = (data >> 12) & 0xffff;
- s->read_reg = (data >> 40) & 0x7f;
- wake_up(&d->reg_wait);
- }
- if (d->count && (d->sb_hwptr == d->sb_swptr)) {
- s->stats.rx_overflow++;
- printk(KERN_DEBUG "cs4297a: RX overflow\n");
- continue;
- }
- good_diff++;
- left = ((be32_to_cpu(s_ptr[1]) & 0xff) << 8) |
- ((be32_to_cpu(s_ptr[2]) >> 24) & 0xff);
- right = (be32_to_cpu(s_ptr[2]) >> 4) & 0xffff;
- *d->sb_hwptr++ = cpu_to_be16(left);
- *d->sb_hwptr++ = cpu_to_be16(right);
- if (d->sb_hwptr == d->sb_end)
- d->sb_hwptr = d->sample_buf;
- descr++;
- if (descr == d->descrtab_end) {
- descr = d->descrtab;
- s_ptr = (u32 *)s->dma_adc.dma_buf;
- } else {
- s_ptr += 8;
- }
- }
- d->total_bytes += good_diff * FRAME_SAMPLE_BYTES;
- d->count += good_diff * FRAME_SAMPLE_BYTES;
- if (d->count > d->sbufsz) {
- printk(KERN_ERR "cs4297a: bogus receive overflow!!\n");
- }
- d->swptr = (d->swptr + diff) % d->ringsz;
- __raw_writeq(diff, SS_CSR(R_SER_DMA_DSCR_COUNT_RX));
- if (d->mapped) {
- if (d->count >= (signed) d->fragsize)
- wake_up(&d->wait);
- } else {
- if (d->count > 0) {
- CS_DBGOUT(CS_WAVE_READ, 4,
- printk(KERN_INFO
- "cs4297a: update count -> %d\n", d->count));
- wake_up(&d->wait);
- }
- }
- } else {
- /* Receive is going even if no one is
- listening (for register accesses and to
- avoid FIFO overrun) */
- diff2 = diff = (hwptr + d->ringsz - d->hwptr) % d->ringsz;
- if (!diff) {
- printk(KERN_ERR "cs4297a: RX full or empty?\n");
- }
-
- descr = &d->descrtab[d->swptr];
- data_p = &d->dma_buf[d->swptr*4];
-
- /* Force this to happen at least once; I got
- here because of an interrupt, so there must
- be a buffer to process. */
- do {
- data = be64_to_cpu(*data_p);
- if ((descr->descr_a & M_DMA_DSCRA_A_ADDR) != CPHYSADDR((long)data_p)) {
- printk(KERN_ERR "cs4297a: RX Bad address %d (%llx %lx)\n", d->swptr,
- (long long)(descr->descr_a & M_DMA_DSCRA_A_ADDR),
- (long)CPHYSADDR((long)data_p));
- }
- if (!(data & (1LL << 63)) ||
- !(descr->descr_a & M_DMA_SERRX_SOP) ||
- (G_DMA_DSCRB_PKT_SIZE(descr->descr_b) != FRAME_BYTES)) {
- s->stats.rx_bad++;
- printk(KERN_DEBUG "cs4297a: RX Bad attributes\n");
- } else {
- s->stats.rx_good++;
- if ((data >> 61) == 7) {
- s->read_value = (data >> 12) & 0xffff;
- s->read_reg = (data >> 40) & 0x7f;
- wake_up(&d->reg_wait);
- }
- }
- descr->descr_a &= ~M_DMA_SERRX_SOP;
- descr++;
- d->swptr++;
- data_p += 4;
- if (descr == d->descrtab_end) {
- descr = d->descrtab;
- d->swptr = 0;
- data_p = d->dma_buf;
- }
- __raw_writeq(1, SS_CSR(R_SER_DMA_DSCR_COUNT_RX));
- } while (--diff);
- d->hwptr = hwptr;
-
- CS_DBGOUT(CS_DESCR, 6,
- printk(KERN_INFO "cs4297a: hw/sw %x/%x\n", d->hwptr, d->swptr));
- }
-
- CS_DBGOUT(CS_PARMS, 8, printk(KERN_INFO
- "cs4297a: cs4297a_update_ptr(): s=0x%.8x hwptr=%d total_bytes=%d count=%d \n",
- (unsigned)s, d->hwptr,
- d->total_bytes, d->count));
- }
-
- /* XXXKW worry about s->reg_request -- there is a starvation
- case if s->ena has FMODE_WRITE on, but the client isn't
- doing writes */
-
- // update DAC pointer
- //
- // check for end of buffer, means that we are going to wait for another interrupt
- // to allow silence to fill the fifos on the part, to keep pops down to a minimum.
- //
- if (s->ena & FMODE_WRITE) {
- serdma_t *d = &s->dma_dac;
- hwptr = (unsigned) (((__raw_readq(SS_CSR(R_SER_DMA_CUR_DSCR_ADDR_TX)) & M_DMA_CURDSCR_ADDR) -
- d->descrtab_phys) / sizeof(serdma_descr_t));
- diff = (d->ringsz + hwptr - d->hwptr) % d->ringsz;
- CS_DBGOUT(CS_WAVE_WRITE, 4, printk(KERN_INFO
- "cs4297a: cs4297a_update_ptr(): hw/hw/sw %x/%x/%x diff %d count %d\n",
- d->hwptr, hwptr, d->swptr, diff, d->count));
- d->hwptr = hwptr;
- /* XXXKW stereo? conversion? Just assume 2 16-bit samples for now */
- d->total_bytes += diff * FRAME_SAMPLE_BYTES;
- if (d->mapped) {
- d->count += diff * FRAME_SAMPLE_BYTES;
- if (d->count >= d->fragsize) {
- d->wakeup = 1;
- wake_up(&d->wait);
- if (d->count > d->sbufsz)
- d->count &= d->sbufsz - 1;
- }
- } else {
- d->count -= diff * FRAME_SAMPLE_BYTES;
- if (d->count <= 0) {
- //
- // fill with silence, and do not shut down the DAC.
- // Continue to play silence until the _release.
- //
- CS_DBGOUT(CS_WAVE_WRITE, 6, printk(KERN_INFO
- "cs4297a: cs4297a_update_ptr(): memset %d at 0x%.8x for %d size \n",
- (unsigned)(s->prop_dac.fmt &
- (AFMT_U8 | AFMT_U16_LE)) ? 0x80 : 0,
- (unsigned)d->dma_buf,
- d->ringsz));
- memset(d->dma_buf, 0, d->ringsz * FRAME_BYTES);
- if (d->count < 0) {
- d->underrun = 1;
- s->stats.tx_underrun++;
- d->count = 0;
- CS_DBGOUT(CS_ERROR, 9, printk(KERN_INFO
- "cs4297a: cs4297a_update_ptr(): underrun\n"));
- }
- } else if (d->count <=
- (signed) d->fragsize
- && !d->endcleared) {
- /* XXXKW what is this for? */
- clear_advance(d->dma_buf,
- d->sbufsz,
- d->swptr,
- d->fragsize,
- 0);
- d->endcleared = 1;
- }
- if ( (d->count <= (signed) d->sbufsz/2) || intflag)
- {
- CS_DBGOUT(CS_WAVE_WRITE, 4,
- printk(KERN_INFO
- "cs4297a: update count -> %d\n", d->count));
- wake_up(&d->wait);
- }
- }
- CS_DBGOUT(CS_PARMS, 8, printk(KERN_INFO
- "cs4297a: cs4297a_update_ptr(): s=0x%.8x hwptr=%d total_bytes=%d count=%d \n",
- (unsigned) s, d->hwptr,
- d->total_bytes, d->count));
- }
-}
-
-static int mixer_ioctl(struct cs4297a_state *s, unsigned int cmd,
- unsigned long arg)
-{
- // Index to mixer_src[] is value of AC97 Input Mux Select Reg.
- // Value of array member is recording source Device ID Mask.
- static const unsigned int mixer_src[8] = {
- SOUND_MASK_MIC, SOUND_MASK_CD, 0, SOUND_MASK_LINE1,
- SOUND_MASK_LINE, SOUND_MASK_VOLUME, 0, 0
- };
-
- // Index of mixtable1[] member is Device ID
- // and must be <= SOUND_MIXER_NRDEVICES.
- // Value of array member is index into s->mix.vol[]
- static const unsigned char mixtable1[SOUND_MIXER_NRDEVICES] = {
- [SOUND_MIXER_PCM] = 1, // voice
- [SOUND_MIXER_LINE1] = 2, // AUX
- [SOUND_MIXER_CD] = 3, // CD
- [SOUND_MIXER_LINE] = 4, // Line
- [SOUND_MIXER_SYNTH] = 5, // FM
- [SOUND_MIXER_MIC] = 6, // Mic
- [SOUND_MIXER_SPEAKER] = 7, // Speaker
- [SOUND_MIXER_RECLEV] = 8, // Recording level
- [SOUND_MIXER_VOLUME] = 9 // Master Volume
- };
-
- static const unsigned mixreg[] = {
- AC97_PCMOUT_VOL,
- AC97_AUX_VOL,
- AC97_CD_VOL,
- AC97_LINEIN_VOL
- };
- unsigned char l, r, rl, rr, vidx;
- unsigned char attentbl[11] =
- { 63, 42, 26, 17, 14, 11, 8, 6, 4, 2, 0 };
- unsigned temp1;
- int i, val;
-
- VALIDATE_STATE(s);
- CS_DBGOUT(CS_FUNCTION, 4, printk(KERN_INFO
- "cs4297a: mixer_ioctl(): s=0x%.8x cmd=0x%.8x\n",
- (unsigned) s, cmd));
-#if CSDEBUG
- cs_printioctl(cmd);
-#endif
-#if CSDEBUG_INTERFACE
-
- if ((cmd == SOUND_MIXER_CS_GETDBGMASK) ||
- (cmd == SOUND_MIXER_CS_SETDBGMASK) ||
- (cmd == SOUND_MIXER_CS_GETDBGLEVEL) ||
- (cmd == SOUND_MIXER_CS_SETDBGLEVEL))
- {
- switch (cmd) {
-
- case SOUND_MIXER_CS_GETDBGMASK:
- return put_user(cs_debugmask,
- (unsigned long *) arg);
-
- case SOUND_MIXER_CS_GETDBGLEVEL:
- return put_user(cs_debuglevel,
- (unsigned long *) arg);
-
- case SOUND_MIXER_CS_SETDBGMASK:
- if (get_user(val, (unsigned long *) arg))
- return -EFAULT;
- cs_debugmask = val;
- return 0;
-
- case SOUND_MIXER_CS_SETDBGLEVEL:
- if (get_user(val, (unsigned long *) arg))
- return -EFAULT;
- cs_debuglevel = val;
- return 0;
- default:
- CS_DBGOUT(CS_ERROR, 1, printk(KERN_INFO
- "cs4297a: mixer_ioctl(): ERROR unknown debug cmd\n"));
- return 0;
- }
- }
-#endif
-
- if (cmd == SOUND_MIXER_PRIVATE1) {
- return -EINVAL;
- }
- if (cmd == SOUND_MIXER_PRIVATE2) {
- // enable/disable/query spatializer
- if (get_user(val, (int *) arg))
- return -EFAULT;
- if (val != -1) {
- temp1 = (val & 0x3f) >> 2;
- cs4297a_write_ac97(s, AC97_3D_CONTROL, temp1);
- cs4297a_read_ac97(s, AC97_GENERAL_PURPOSE,
- &temp1);
- cs4297a_write_ac97(s, AC97_GENERAL_PURPOSE,
- temp1 | 0x2000);
- }
- cs4297a_read_ac97(s, AC97_3D_CONTROL, &temp1);
- return put_user((temp1 << 2) | 3, (int *) arg);
- }
- if (cmd == SOUND_MIXER_INFO) {
- mixer_info info;
- memset(&info, 0, sizeof(info));
- strlcpy(info.id, "CS4297a", sizeof(info.id));
- strlcpy(info.name, "Crystal CS4297a", sizeof(info.name));
- info.modify_counter = s->mix.modcnt;
- if (copy_to_user((void *) arg, &info, sizeof(info)))
- return -EFAULT;
- return 0;
- }
- if (cmd == SOUND_OLD_MIXER_INFO) {
- _old_mixer_info info;
- memset(&info, 0, sizeof(info));
- strlcpy(info.id, "CS4297a", sizeof(info.id));
- strlcpy(info.name, "Crystal CS4297a", sizeof(info.name));
- if (copy_to_user((void *) arg, &info, sizeof(info)))
- return -EFAULT;
- return 0;
- }
- if (cmd == OSS_GETVERSION)
- return put_user(SOUND_VERSION, (int *) arg);
-
- if (_IOC_TYPE(cmd) != 'M' || _SIOC_SIZE(cmd) != sizeof(int))
- return -EINVAL;
-
- // If ioctl has only the SIOC_READ bit(bit 31)
- // on, process the only-read commands.
- if (_SIOC_DIR(cmd) == _SIOC_READ) {
- switch (_IOC_NR(cmd)) {
- case SOUND_MIXER_RECSRC: // Arg contains a bit for each recording source
- cs4297a_read_ac97(s, AC97_RECORD_SELECT,
- &temp1);
- return put_user(mixer_src[temp1 & 7], (int *) arg);
-
- case SOUND_MIXER_DEVMASK: // Arg contains a bit for each supported device
- return put_user(SOUND_MASK_PCM | SOUND_MASK_LINE |
- SOUND_MASK_VOLUME | SOUND_MASK_RECLEV,
- (int *) arg);
-
- case SOUND_MIXER_RECMASK: // Arg contains a bit for each supported recording source
- return put_user(SOUND_MASK_LINE | SOUND_MASK_VOLUME,
- (int *) arg);
-
- case SOUND_MIXER_STEREODEVS: // Mixer channels supporting stereo
- return put_user(SOUND_MASK_PCM | SOUND_MASK_LINE |
- SOUND_MASK_VOLUME | SOUND_MASK_RECLEV,
- (int *) arg);
-
- case SOUND_MIXER_CAPS:
- return put_user(SOUND_CAP_EXCL_INPUT, (int *) arg);
-
- default:
- i = _IOC_NR(cmd);
- if (i >= SOUND_MIXER_NRDEVICES
- || !(vidx = mixtable1[i]))
- return -EINVAL;
- return put_user(s->mix.vol[vidx - 1], (int *) arg);
- }
- }
- // If ioctl doesn't have both the SIOC_READ and
- // the SIOC_WRITE bit set, return invalid.
- if (_SIOC_DIR(cmd) != (_SIOC_READ | _SIOC_WRITE))
- return -EINVAL;
-
- // Increment the count of volume writes.
- s->mix.modcnt++;
-
- // Isolate the command; it must be a write.
- switch (_IOC_NR(cmd)) {
-
- case SOUND_MIXER_RECSRC: // Arg contains a bit for each recording source
- if (get_user(val, (int *) arg))
- return -EFAULT;
- i = hweight32(val); // i = # bits on in val.
- if (i != 1) // One & only 1 bit must be on.
- return 0;
- for (i = 0; i < sizeof(mixer_src) / sizeof(int); i++) {
- if (val == mixer_src[i]) {
- temp1 = (i << 8) | i;
- cs4297a_write_ac97(s,
- AC97_RECORD_SELECT,
- temp1);
- return 0;
- }
- }
- return 0;
-
- case SOUND_MIXER_VOLUME:
- if (get_user(val, (int *) arg))
- return -EFAULT;
- l = val & 0xff;
- if (l > 100)
- l = 100; // Max soundcard.h vol is 100.
- if (l < 6) {
- rl = 63;
- l = 0;
- } else
- rl = attentbl[(10 * l) / 100]; // Convert 0-100 vol to 63-0 atten.
-
- r = (val >> 8) & 0xff;
- if (r > 100)
- r = 100; // Max right volume is 100, too
- if (r < 6) {
- rr = 63;
- r = 0;
- } else
- rr = attentbl[(10 * r) / 100]; // Convert volume to attenuation.
-
- if ((rl > 60) && (rr > 60)) // If both l & r are 'low',
- temp1 = 0x8000; // turn on the mute bit.
- else
- temp1 = 0;
-
- temp1 |= (rl << 8) | rr;
-
- cs4297a_write_ac97(s, AC97_MASTER_VOL_STEREO, temp1);
- cs4297a_write_ac97(s, AC97_PHONE_VOL, temp1);
-
-#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
- s->mix.vol[8] = ((unsigned int) r << 8) | l;
-#else
- s->mix.vol[8] = val;
-#endif
- return put_user(s->mix.vol[8], (int *) arg);
-
- case SOUND_MIXER_SPEAKER:
- if (get_user(val, (int *) arg))
- return -EFAULT;
- l = val & 0xff;
- if (l > 100)
- l = 100;
- if (l < 3) {
- rl = 0;
- l = 0;
- } else {
- rl = (l * 2 - 5) / 13; // Convert 0-100 range to 0-15.
- l = (rl * 13 + 5) / 2;
- }
-
- if (rl < 3) {
- temp1 = 0x8000;
- rl = 0;
- } else
- temp1 = 0;
- rl = 15 - rl; // Convert volume to attenuation.
- temp1 |= rl << 1;
- cs4297a_write_ac97(s, AC97_PCBEEP_VOL, temp1);
-
-#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
- s->mix.vol[6] = l << 8;
-#else
- s->mix.vol[6] = val;
-#endif
- return put_user(s->mix.vol[6], (int *) arg);
-
- case SOUND_MIXER_RECLEV:
- if (get_user(val, (int *) arg))
- return -EFAULT;
- l = val & 0xff;
- if (l > 100)
- l = 100;
- r = (val >> 8) & 0xff;
- if (r > 100)
- r = 100;
- rl = (l * 2 - 5) / 13; // Convert 0-100 scale to 0-15.
- rr = (r * 2 - 5) / 13;
- if (rl < 3 && rr < 3)
- temp1 = 0x8000;
- else
- temp1 = 0;
-
- temp1 = temp1 | (rl << 8) | rr;
- cs4297a_write_ac97(s, AC97_RECORD_GAIN, temp1);
-
-#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
- s->mix.vol[7] = ((unsigned int) r << 8) | l;
-#else
- s->mix.vol[7] = val;
-#endif
- return put_user(s->mix.vol[7], (int *) arg);
-
- case SOUND_MIXER_MIC:
- if (get_user(val, (int *) arg))
- return -EFAULT;
- l = val & 0xff;
- if (l > 100)
- l = 100;
- if (l < 1) {
- l = 0;
- rl = 0;
- } else {
- rl = ((unsigned) l * 5 - 4) / 16; // Convert 0-100 range to 0-31.
- l = (rl * 16 + 4) / 5;
- }
- cs4297a_read_ac97(s, AC97_MIC_VOL, &temp1);
- temp1 &= 0x40; // Isolate 20db gain bit.
- if (rl < 3) {
- temp1 |= 0x8000;
- rl = 0;
- }
- rl = 31 - rl; // Convert volume to attenuation.
- temp1 |= rl;
- cs4297a_write_ac97(s, AC97_MIC_VOL, temp1);
-
-#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
- s->mix.vol[5] = val << 8;
-#else
- s->mix.vol[5] = val;
-#endif
- return put_user(s->mix.vol[5], (int *) arg);
-
-
- case SOUND_MIXER_SYNTH:
- if (get_user(val, (int *) arg))
- return -EFAULT;
- l = val & 0xff;
- if (l > 100)
- l = 100;
- if (get_user(val, (int *) arg))
- return -EFAULT;
- r = (val >> 8) & 0xff;
- if (r > 100)
- r = 100;
- rl = (l * 2 - 11) / 3; // Convert 0-100 range to 0-63.
- rr = (r * 2 - 11) / 3;
- if (rl < 3) // If l is low, turn on
- temp1 = 0x0080; // the mute bit.
- else
- temp1 = 0;
-
- rl = 63 - rl; // Convert vol to attenuation.
-// writel(temp1 | rl, s->pBA0 + FMLVC);
- if (rr < 3) // If rr is low, turn on
- temp1 = 0x0080; // the mute bit.
- else
- temp1 = 0;
- rr = 63 - rr; // Convert vol to attenuation.
-// writel(temp1 | rr, s->pBA0 + FMRVC);
-
-#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
- s->mix.vol[4] = (r << 8) | l;
-#else
- s->mix.vol[4] = val;
-#endif
- return put_user(s->mix.vol[4], (int *) arg);
-
-
- default:
- CS_DBGOUT(CS_IOCTL, 4, printk(KERN_INFO
- "cs4297a: mixer_ioctl(): default\n"));
-
- i = _IOC_NR(cmd);
- if (i >= SOUND_MIXER_NRDEVICES || !(vidx = mixtable1[i]))
- return -EINVAL;
- if (get_user(val, (int *) arg))
- return -EFAULT;
- l = val & 0xff;
- if (l > 100)
- l = 100;
- if (l < 1) {
- l = 0;
- rl = 31;
- } else
- rl = (attentbl[(l * 10) / 100]) >> 1;
-
- r = (val >> 8) & 0xff;
- if (r > 100)
- r = 100;
- if (r < 1) {
- r = 0;
- rr = 31;
- } else
- rr = (attentbl[(r * 10) / 100]) >> 1;
- if ((rl > 30) && (rr > 30))
- temp1 = 0x8000;
- else
- temp1 = 0;
- temp1 = temp1 | (rl << 8) | rr;
- cs4297a_write_ac97(s, mixreg[vidx - 1], temp1);
-
-#ifdef OSS_DOCUMENTED_MIXER_SEMANTICS
- s->mix.vol[vidx - 1] = ((unsigned int) r << 8) | l;
-#else
- s->mix.vol[vidx - 1] = val;
-#endif
- return put_user(s->mix.vol[vidx - 1], (int *) arg);
- }
-}
-
-
-// ---------------------------------------------------------------------
-
-static int cs4297a_open_mixdev(struct inode *inode, struct file *file)
-{
- int minor = iminor(inode);
- struct cs4297a_state *s=NULL;
- struct list_head *entry;
-
- CS_DBGOUT(CS_FUNCTION | CS_OPEN, 4,
- printk(KERN_INFO "cs4297a: cs4297a_open_mixdev()+\n"));
-
- mutex_lock(&swarm_cs4297a_mutex);
- list_for_each(entry, &cs4297a_devs)
- {
- s = list_entry(entry, struct cs4297a_state, list);
- if(s->dev_mixer == minor)
- break;
- }
- if (!s)
- {
- CS_DBGOUT(CS_FUNCTION | CS_OPEN | CS_ERROR, 2,
- printk(KERN_INFO "cs4297a: cs4297a_open_mixdev()- -ENODEV\n"));
-
- mutex_unlock(&swarm_cs4297a_mutex);
- return -ENODEV;
- }
- VALIDATE_STATE(s);
- file->private_data = s;
-
- CS_DBGOUT(CS_FUNCTION | CS_OPEN, 4,
- printk(KERN_INFO "cs4297a: cs4297a_open_mixdev()- 0\n"));
- mutex_unlock(&swarm_cs4297a_mutex);
-
- return nonseekable_open(inode, file);
-}
-
-
-static int cs4297a_release_mixdev(struct inode *inode, struct file *file)
-{
- struct cs4297a_state *s =
- (struct cs4297a_state *) file->private_data;
-
- VALIDATE_STATE(s);
- return 0;
-}
-
-
-static int cs4297a_ioctl_mixdev(struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- int ret;
- mutex_lock(&swarm_cs4297a_mutex);
- ret = mixer_ioctl((struct cs4297a_state *) file->private_data, cmd,
- arg);
- mutex_unlock(&swarm_cs4297a_mutex);
- return ret;
-}
-
-
-// ******************************************************************************************
-// Mixer file operations struct.
-// ******************************************************************************************
-static const struct file_operations cs4297a_mixer_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .unlocked_ioctl = cs4297a_ioctl_mixdev,
- .open = cs4297a_open_mixdev,
- .release = cs4297a_release_mixdev,
-};
-
-// ---------------------------------------------------------------------
-
-
-static int drain_adc(struct cs4297a_state *s, int nonblock)
-{
- /* This routine serves no purpose currently - any samples
- sitting in the receive queue will just be processed by the
- background consumer. This would be different if DMA
- actually stopped when there were no clients. */
- return 0;
-}
-
-static int drain_dac(struct cs4297a_state *s, int nonblock)
-{
- DECLARE_WAITQUEUE(wait, current);
- unsigned long flags;
- unsigned hwptr;
- unsigned tmo;
- int count;
-
- if (s->dma_dac.mapped)
- return 0;
- if (nonblock)
- return -EBUSY;
- add_wait_queue(&s->dma_dac.wait, &wait);
- while ((count = __raw_readq(SS_CSR(R_SER_DMA_DSCR_COUNT_TX))) ||
- (s->dma_dac.count > 0)) {
- if (!signal_pending(current)) {
- set_current_state(TASK_INTERRUPTIBLE);
- /* XXXKW is this calculation working? */
- tmo = ((count * FRAME_TX_US) * HZ) / 1000000;
- schedule_timeout(tmo + 1);
- } else {
- /* XXXKW do I care if there is a signal pending? */
- }
- }
- spin_lock_irqsave(&s->lock, flags);
- /* Reset the bookkeeping */
- hwptr = (int)(((__raw_readq(SS_CSR(R_SER_DMA_CUR_DSCR_ADDR_TX)) & M_DMA_CURDSCR_ADDR) -
- s->dma_dac.descrtab_phys) / sizeof(serdma_descr_t));
- s->dma_dac.hwptr = s->dma_dac.swptr = hwptr;
- spin_unlock_irqrestore(&s->lock, flags);
- remove_wait_queue(&s->dma_dac.wait, &wait);
- __set_current_state(TASK_RUNNING);
- return 0;
-}
-
-
-// ---------------------------------------------------------------------
-
-static ssize_t cs4297a_read(struct file *file, char *buffer, size_t count,
- loff_t * ppos)
-{
- struct cs4297a_state *s =
- (struct cs4297a_state *) file->private_data;
- ssize_t ret;
- unsigned long flags;
- int cnt, count_fr, cnt_by;
- unsigned copied = 0;
-
- CS_DBGOUT(CS_FUNCTION | CS_WAVE_READ, 2,
- printk(KERN_INFO "cs4297a: cs4297a_read()+ %d \n", count));
-
- VALIDATE_STATE(s);
- if (s->dma_adc.mapped)
- return -ENXIO;
- if (!s->dma_adc.ready && (ret = prog_dmabuf_adc(s)))
- return ret;
- if (!access_ok(VERIFY_WRITE, buffer, count))
- return -EFAULT;
- ret = 0;
-//
-// "count" is the amount of bytes to read (from app), is decremented each loop
-// by the amount of bytes that have been returned to the user buffer.
-// "cnt" is the running total of each read from the buffer (changes each loop)
-// "buffer" points to the app's buffer
-// "ret" keeps a running total of the amount of bytes that have been copied
-// to the user buffer.
-// "copied" is the total bytes copied into the user buffer for each loop.
-//
- while (count > 0) {
- CS_DBGOUT(CS_WAVE_READ, 8, printk(KERN_INFO
- "_read() count>0 count=%d .count=%d .swptr=%d .hwptr=%d \n",
- count, s->dma_adc.count,
- s->dma_adc.swptr, s->dma_adc.hwptr));
- spin_lock_irqsave(&s->lock, flags);
-
- /* cnt will be the number of available samples (16-bit
- stereo); it starts out as the maxmimum consequetive
- samples */
- cnt = (s->dma_adc.sb_end - s->dma_adc.sb_swptr) / 2;
- count_fr = s->dma_adc.count / FRAME_SAMPLE_BYTES;
-
- // dma_adc.count is the current total bytes that have not been read.
- // if the amount of unread bytes from the current sw pointer to the
- // end of the buffer is greater than the current total bytes that
- // have not been read, then set the "cnt" (unread bytes) to the
- // amount of unread bytes.
-
- if (count_fr < cnt)
- cnt = count_fr;
- cnt_by = cnt * FRAME_SAMPLE_BYTES;
- spin_unlock_irqrestore(&s->lock, flags);
- //
- // if we are converting from 8/16 then we need to copy
- // twice the number of 16 bit bytes then 8 bit bytes.
- //
- if (s->conversion) {
- if (cnt_by > (count * 2)) {
- cnt = (count * 2) / FRAME_SAMPLE_BYTES;
- cnt_by = count * 2;
- }
- } else {
- if (cnt_by > count) {
- cnt = count / FRAME_SAMPLE_BYTES;
- cnt_by = count;
- }
- }
- //
- // "cnt" NOW is the smaller of the amount that will be read,
- // and the amount that is requested in this read (or partial).
- // if there are no bytes in the buffer to read, then start the
- // ADC and wait for the interrupt handler to wake us up.
- //
- if (cnt <= 0) {
-
- // start up the dma engine and then continue back to the top of
- // the loop when wake up occurs.
- start_adc(s);
- if (file->f_flags & O_NONBLOCK)
- return ret ? ret : -EAGAIN;
- oss_broken_sleep_on(&s->dma_adc.wait, MAX_SCHEDULE_TIMEOUT);
- if (signal_pending(current))
- return ret ? ret : -ERESTARTSYS;
- continue;
- }
- // there are bytes in the buffer to read.
- // copy from the hw buffer over to the user buffer.
- // user buffer is designated by "buffer"
- // virtual address to copy from is dma_buf+swptr
- // the "cnt" is the number of bytes to read.
-
- CS_DBGOUT(CS_WAVE_READ, 2, printk(KERN_INFO
- "_read() copy_to cnt=%d count=%d ", cnt_by, count));
- CS_DBGOUT(CS_WAVE_READ, 8, printk(KERN_INFO
- " .sbufsz=%d .count=%d buffer=0x%.8x ret=%d\n",
- s->dma_adc.sbufsz, s->dma_adc.count,
- (unsigned) buffer, ret));
-
- if (copy_to_user (buffer, ((void *)s->dma_adc.sb_swptr), cnt_by))
- return ret ? ret : -EFAULT;
- copied = cnt_by;
-
- /* Return the descriptors */
- spin_lock_irqsave(&s->lock, flags);
- CS_DBGOUT(CS_FUNCTION, 2,
- printk(KERN_INFO "cs4297a: upd_rcv sw->hw %x/%x\n", s->dma_adc.swptr, s->dma_adc.hwptr));
- s->dma_adc.count -= cnt_by;
- s->dma_adc.sb_swptr += cnt * 2;
- if (s->dma_adc.sb_swptr == s->dma_adc.sb_end)
- s->dma_adc.sb_swptr = s->dma_adc.sample_buf;
- spin_unlock_irqrestore(&s->lock, flags);
- count -= copied;
- buffer += copied;
- ret += copied;
- start_adc(s);
- }
- CS_DBGOUT(CS_FUNCTION | CS_WAVE_READ, 2,
- printk(KERN_INFO "cs4297a: cs4297a_read()- %d\n", ret));
- return ret;
-}
-
-
-static ssize_t cs4297a_write(struct file *file, const char *buffer,
- size_t count, loff_t * ppos)
-{
- struct cs4297a_state *s =
- (struct cs4297a_state *) file->private_data;
- ssize_t ret;
- unsigned long flags;
- unsigned swptr, hwptr;
- int cnt;
-
- CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE, 2,
- printk(KERN_INFO "cs4297a: cs4297a_write()+ count=%d\n",
- count));
- VALIDATE_STATE(s);
-
- if (s->dma_dac.mapped)
- return -ENXIO;
- if (!s->dma_dac.ready && (ret = prog_dmabuf_dac(s)))
- return ret;
- if (!access_ok(VERIFY_READ, buffer, count))
- return -EFAULT;
- ret = 0;
- while (count > 0) {
- serdma_t *d = &s->dma_dac;
- int copy_cnt;
- u32 *s_tmpl;
- u32 *t_tmpl;
- u32 left, right;
- int swap = (s->prop_dac.fmt == AFMT_S16_LE) || (s->prop_dac.fmt == AFMT_U16_LE);
-
- /* XXXXXX this is broken for BLOAT_FACTOR */
- spin_lock_irqsave(&s->lock, flags);
- if (d->count < 0) {
- d->count = 0;
- d->swptr = d->hwptr;
- }
- if (d->underrun) {
- d->underrun = 0;
- hwptr = (unsigned) (((__raw_readq(SS_CSR(R_SER_DMA_CUR_DSCR_ADDR_TX)) & M_DMA_CURDSCR_ADDR) -
- d->descrtab_phys) / sizeof(serdma_descr_t));
- d->swptr = d->hwptr = hwptr;
- }
- swptr = d->swptr;
- cnt = d->sbufsz - (swptr * FRAME_SAMPLE_BYTES);
- /* Will this write fill up the buffer? */
- if (d->count + cnt > d->sbufsz)
- cnt = d->sbufsz - d->count;
- spin_unlock_irqrestore(&s->lock, flags);
- if (cnt > count)
- cnt = count;
- if (cnt <= 0) {
- start_dac(s);
- if (file->f_flags & O_NONBLOCK)
- return ret ? ret : -EAGAIN;
- oss_broken_sleep_on(&d->wait, MAX_SCHEDULE_TIMEOUT);
- if (signal_pending(current))
- return ret ? ret : -ERESTARTSYS;
- continue;
- }
- if (copy_from_user(d->sample_buf, buffer, cnt))
- return ret ? ret : -EFAULT;
-
- copy_cnt = cnt;
- s_tmpl = (u32 *)d->sample_buf;
- t_tmpl = (u32 *)(d->dma_buf + (swptr * 4));
-
- /* XXXKW assuming 16-bit stereo! */
- do {
- u32 tmp;
-
- t_tmpl[0] = cpu_to_be32(0x98000000);
-
- tmp = be32_to_cpu(s_tmpl[0]);
- left = tmp & 0xffff;
- right = tmp >> 16;
- if (swap) {
- left = swab16(left);
- right = swab16(right);
- }
- t_tmpl[1] = cpu_to_be32(left >> 8);
- t_tmpl[2] = cpu_to_be32(((left & 0xff) << 24) |
- (right << 4));
-
- s_tmpl++;
- t_tmpl += 8;
- copy_cnt -= 4;
- } while (copy_cnt);
-
- /* Mux in any pending read/write accesses */
- if (s->reg_request) {
- *(u64 *)(d->dma_buf + (swptr * 4)) |=
- cpu_to_be64(s->reg_request);
- s->reg_request = 0;
- wake_up(&s->dma_dac.reg_wait);
- }
-
- CS_DBGOUT(CS_WAVE_WRITE, 4,
- printk(KERN_INFO
- "cs4297a: copy in %d to swptr %x\n", cnt, swptr));
-
- swptr = (swptr + (cnt/FRAME_SAMPLE_BYTES)) % d->ringsz;
- __raw_writeq(cnt/FRAME_SAMPLE_BYTES, SS_CSR(R_SER_DMA_DSCR_COUNT_TX));
- spin_lock_irqsave(&s->lock, flags);
- d->swptr = swptr;
- d->count += cnt;
- d->endcleared = 0;
- spin_unlock_irqrestore(&s->lock, flags);
- count -= cnt;
- buffer += cnt;
- ret += cnt;
- start_dac(s);
- }
- CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE, 2,
- printk(KERN_INFO "cs4297a: cs4297a_write()- %d\n", ret));
- return ret;
-}
-
-
-static unsigned int cs4297a_poll(struct file *file,
- struct poll_table_struct *wait)
-{
- struct cs4297a_state *s =
- (struct cs4297a_state *) file->private_data;
- unsigned long flags;
- unsigned int mask = 0;
-
- CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE | CS_WAVE_READ, 4,
- printk(KERN_INFO "cs4297a: cs4297a_poll()+\n"));
- VALIDATE_STATE(s);
- if (file->f_mode & FMODE_WRITE) {
- CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE | CS_WAVE_READ, 4,
- printk(KERN_INFO
- "cs4297a: cs4297a_poll() wait on FMODE_WRITE\n"));
- if(!s->dma_dac.ready && prog_dmabuf_dac(s))
- return 0;
- poll_wait(file, &s->dma_dac.wait, wait);
- }
- if (file->f_mode & FMODE_READ) {
- CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE | CS_WAVE_READ, 4,
- printk(KERN_INFO
- "cs4297a: cs4297a_poll() wait on FMODE_READ\n"));
- if(!s->dma_dac.ready && prog_dmabuf_adc(s))
- return 0;
- poll_wait(file, &s->dma_adc.wait, wait);
- }
- spin_lock_irqsave(&s->lock, flags);
- cs4297a_update_ptr(s,CS_FALSE);
- if (file->f_mode & FMODE_WRITE) {
- if (s->dma_dac.mapped) {
- if (s->dma_dac.count >=
- (signed) s->dma_dac.fragsize) {
- if (s->dma_dac.wakeup)
- mask |= POLLOUT | POLLWRNORM;
- else
- mask = 0;
- s->dma_dac.wakeup = 0;
- }
- } else {
- if ((signed) (s->dma_dac.sbufsz/2) >= s->dma_dac.count)
- mask |= POLLOUT | POLLWRNORM;
- }
- } else if (file->f_mode & FMODE_READ) {
- if (s->dma_adc.mapped) {
- if (s->dma_adc.count >= (signed) s->dma_adc.fragsize)
- mask |= POLLIN | POLLRDNORM;
- } else {
- if (s->dma_adc.count > 0)
- mask |= POLLIN | POLLRDNORM;
- }
- }
- spin_unlock_irqrestore(&s->lock, flags);
- CS_DBGOUT(CS_FUNCTION | CS_WAVE_WRITE | CS_WAVE_READ, 4,
- printk(KERN_INFO "cs4297a: cs4297a_poll()- 0x%.8x\n",
- mask));
- return mask;
-}
-
-
-static int cs4297a_mmap(struct file *file, struct vm_area_struct *vma)
-{
- /* XXXKW currently no mmap support */
- return -EINVAL;
- return 0;
-}
-
-
-static int cs4297a_ioctl(struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- struct cs4297a_state *s =
- (struct cs4297a_state *) file->private_data;
- unsigned long flags;
- audio_buf_info abinfo;
- count_info cinfo;
- int val, mapped, ret;
-
- CS_DBGOUT(CS_FUNCTION|CS_IOCTL, 4, printk(KERN_INFO
- "cs4297a: cs4297a_ioctl(): file=0x%.8x cmd=0x%.8x\n",
- (unsigned) file, cmd));
-#if CSDEBUG
- cs_printioctl(cmd);
-#endif
- VALIDATE_STATE(s);
- mapped = ((file->f_mode & FMODE_WRITE) && s->dma_dac.mapped) ||
- ((file->f_mode & FMODE_READ) && s->dma_adc.mapped);
- switch (cmd) {
- case OSS_GETVERSION:
- CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
- "cs4297a: cs4297a_ioctl(): SOUND_VERSION=0x%.8x\n",
- SOUND_VERSION));
- return put_user(SOUND_VERSION, (int *) arg);
-
- case SNDCTL_DSP_SYNC:
- CS_DBGOUT(CS_IOCTL, 4, printk(KERN_INFO
- "cs4297a: cs4297a_ioctl(): DSP_SYNC\n"));
- if (file->f_mode & FMODE_WRITE)
- return drain_dac(s,
- 0 /*file->f_flags & O_NONBLOCK */
- );
- return 0;
-
- case SNDCTL_DSP_SETDUPLEX:
- return 0;
-
- case SNDCTL_DSP_GETCAPS:
- return put_user(DSP_CAP_DUPLEX | DSP_CAP_REALTIME |
- DSP_CAP_TRIGGER | DSP_CAP_MMAP,
- (int *) arg);
-
- case SNDCTL_DSP_RESET:
- CS_DBGOUT(CS_IOCTL, 4, printk(KERN_INFO
- "cs4297a: cs4297a_ioctl(): DSP_RESET\n"));
- if (file->f_mode & FMODE_WRITE) {
- stop_dac(s);
- synchronize_irq(s->irq);
- s->dma_dac.count = s->dma_dac.total_bytes =
- s->dma_dac.blocks = s->dma_dac.wakeup = 0;
- s->dma_dac.swptr = s->dma_dac.hwptr =
- (int)(((__raw_readq(SS_CSR(R_SER_DMA_CUR_DSCR_ADDR_TX)) & M_DMA_CURDSCR_ADDR) -
- s->dma_dac.descrtab_phys) / sizeof(serdma_descr_t));
- }
- if (file->f_mode & FMODE_READ) {
- stop_adc(s);
- synchronize_irq(s->irq);
- s->dma_adc.count = s->dma_adc.total_bytes =
- s->dma_adc.blocks = s->dma_dac.wakeup = 0;
- s->dma_adc.swptr = s->dma_adc.hwptr =
- (int)(((__raw_readq(SS_CSR(R_SER_DMA_CUR_DSCR_ADDR_RX)) & M_DMA_CURDSCR_ADDR) -
- s->dma_adc.descrtab_phys) / sizeof(serdma_descr_t));
- }
- return 0;
-
- case SNDCTL_DSP_SPEED:
- if (get_user(val, (int *) arg))
- return -EFAULT;
- CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
- "cs4297a: cs4297a_ioctl(): DSP_SPEED val=%d -> 48000\n", val));
- val = 48000;
- return put_user(val, (int *) arg);
-
- case SNDCTL_DSP_STEREO:
- if (get_user(val, (int *) arg))
- return -EFAULT;
- CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
- "cs4297a: cs4297a_ioctl(): DSP_STEREO val=%d\n", val));
- if (file->f_mode & FMODE_READ) {
- stop_adc(s);
- s->dma_adc.ready = 0;
- s->prop_adc.channels = val ? 2 : 1;
- }
- if (file->f_mode & FMODE_WRITE) {
- stop_dac(s);
- s->dma_dac.ready = 0;
- s->prop_dac.channels = val ? 2 : 1;
- }
- return 0;
-
- case SNDCTL_DSP_CHANNELS:
- if (get_user(val, (int *) arg))
- return -EFAULT;
- CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
- "cs4297a: cs4297a_ioctl(): DSP_CHANNELS val=%d\n",
- val));
- if (val != 0) {
- if (file->f_mode & FMODE_READ) {
- stop_adc(s);
- s->dma_adc.ready = 0;
- if (val >= 2)
- s->prop_adc.channels = 2;
- else
- s->prop_adc.channels = 1;
- }
- if (file->f_mode & FMODE_WRITE) {
- stop_dac(s);
- s->dma_dac.ready = 0;
- if (val >= 2)
- s->prop_dac.channels = 2;
- else
- s->prop_dac.channels = 1;
- }
- }
-
- if (file->f_mode & FMODE_WRITE)
- val = s->prop_dac.channels;
- else if (file->f_mode & FMODE_READ)
- val = s->prop_adc.channels;
-
- return put_user(val, (int *) arg);
-
- case SNDCTL_DSP_GETFMTS: // Returns a mask
- CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
- "cs4297a: cs4297a_ioctl(): DSP_GETFMT val=0x%.8x\n",
- AFMT_S16_LE | AFMT_U16_LE | AFMT_S8 |
- AFMT_U8));
- return put_user(AFMT_S16_LE | AFMT_U16_LE | AFMT_S8 |
- AFMT_U8, (int *) arg);
-
- case SNDCTL_DSP_SETFMT:
- if (get_user(val, (int *) arg))
- return -EFAULT;
- CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
- "cs4297a: cs4297a_ioctl(): DSP_SETFMT val=0x%.8x\n",
- val));
- if (val != AFMT_QUERY) {
- if (file->f_mode & FMODE_READ) {
- stop_adc(s);
- s->dma_adc.ready = 0;
- if (val != AFMT_S16_LE
- && val != AFMT_U16_LE && val != AFMT_S8
- && val != AFMT_U8)
- val = AFMT_U8;
- s->prop_adc.fmt = val;
- s->prop_adc.fmt_original = s->prop_adc.fmt;
- }
- if (file->f_mode & FMODE_WRITE) {
- stop_dac(s);
- s->dma_dac.ready = 0;
- if (val != AFMT_S16_LE
- && val != AFMT_U16_LE && val != AFMT_S8
- && val != AFMT_U8)
- val = AFMT_U8;
- s->prop_dac.fmt = val;
- s->prop_dac.fmt_original = s->prop_dac.fmt;
- }
- } else {
- if (file->f_mode & FMODE_WRITE)
- val = s->prop_dac.fmt_original;
- else if (file->f_mode & FMODE_READ)
- val = s->prop_adc.fmt_original;
- }
- CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(KERN_INFO
- "cs4297a: cs4297a_ioctl(): DSP_SETFMT return val=0x%.8x\n",
- val));
- return put_user(val, (int *) arg);
-
- case SNDCTL_DSP_POST:
- CS_DBGOUT(CS_IOCTL, 4, printk(KERN_INFO
- "cs4297a: cs4297a_ioctl(): DSP_POST\n"));
- return 0;
-
- case SNDCTL_DSP_GETTRIGGER:
- val = 0;
- if (file->f_mode & s->ena & FMODE_READ)
- val |= PCM_ENABLE_INPUT;
- if (file->f_mode & s->ena & FMODE_WRITE)
- val |= PCM_ENABLE_OUTPUT;
- return put_user(val, (int *) arg);
-
- case SNDCTL_DSP_SETTRIGGER:
- if (get_user(val, (int *) arg))
- return -EFAULT;
- if (file->f_mode & FMODE_READ) {
- if (val & PCM_ENABLE_INPUT) {
- if (!s->dma_adc.ready
- && (ret = prog_dmabuf_adc(s)))
- return ret;
- start_adc(s);
- } else
- stop_adc(s);
- }
- if (file->f_mode & FMODE_WRITE) {
- if (val & PCM_ENABLE_OUTPUT) {
- if (!s->dma_dac.ready
- && (ret = prog_dmabuf_dac(s)))
- return ret;
- start_dac(s);
- } else
- stop_dac(s);
- }
- return 0;
-
- case SNDCTL_DSP_GETOSPACE:
- if (!(file->f_mode & FMODE_WRITE))
- return -EINVAL;
- if (!s->dma_dac.ready && (val = prog_dmabuf_dac(s)))
- return val;
- spin_lock_irqsave(&s->lock, flags);
- cs4297a_update_ptr(s,CS_FALSE);
- abinfo.fragsize = s->dma_dac.fragsize;
- if (s->dma_dac.mapped)
- abinfo.bytes = s->dma_dac.sbufsz;
- else
- abinfo.bytes =
- s->dma_dac.sbufsz - s->dma_dac.count;
- abinfo.fragstotal = s->dma_dac.numfrag;
- abinfo.fragments = abinfo.bytes >> s->dma_dac.fragshift;
- CS_DBGOUT(CS_FUNCTION | CS_PARMS, 4, printk(KERN_INFO
- "cs4297a: cs4297a_ioctl(): GETOSPACE .fragsize=%d .bytes=%d .fragstotal=%d .fragments=%d\n",
- abinfo.fragsize,abinfo.bytes,abinfo.fragstotal,
- abinfo.fragments));
- spin_unlock_irqrestore(&s->lock, flags);
- return copy_to_user((void *) arg, &abinfo,
- sizeof(abinfo)) ? -EFAULT : 0;
-
- case SNDCTL_DSP_GETISPACE:
- if (!(file->f_mode & FMODE_READ))
- return -EINVAL;
- if (!s->dma_adc.ready && (val = prog_dmabuf_adc(s)))
- return val;
- spin_lock_irqsave(&s->lock, flags);
- cs4297a_update_ptr(s,CS_FALSE);
- if (s->conversion) {
- abinfo.fragsize = s->dma_adc.fragsize / 2;
- abinfo.bytes = s->dma_adc.count / 2;
- abinfo.fragstotal = s->dma_adc.numfrag;
- abinfo.fragments =
- abinfo.bytes >> (s->dma_adc.fragshift - 1);
- } else {
- abinfo.fragsize = s->dma_adc.fragsize;
- abinfo.bytes = s->dma_adc.count;
- abinfo.fragstotal = s->dma_adc.numfrag;
- abinfo.fragments =
- abinfo.bytes >> s->dma_adc.fragshift;
- }
- spin_unlock_irqrestore(&s->lock, flags);
- return copy_to_user((void *) arg, &abinfo,
- sizeof(abinfo)) ? -EFAULT : 0;
-
- case SNDCTL_DSP_NONBLOCK:
- spin_lock(&file->f_lock);
- file->f_flags |= O_NONBLOCK;
- spin_unlock(&file->f_lock);
- return 0;
-
- case SNDCTL_DSP_GETODELAY:
- if (!(file->f_mode & FMODE_WRITE))
- return -EINVAL;
- if(!s->dma_dac.ready && prog_dmabuf_dac(s))
- return 0;
- spin_lock_irqsave(&s->lock, flags);
- cs4297a_update_ptr(s,CS_FALSE);
- val = s->dma_dac.count;
- spin_unlock_irqrestore(&s->lock, flags);
- return put_user(val, (int *) arg);
-
- case SNDCTL_DSP_GETIPTR:
- if (!(file->f_mode & FMODE_READ))
- return -EINVAL;
- if(!s->dma_adc.ready && prog_dmabuf_adc(s))
- return 0;
- spin_lock_irqsave(&s->lock, flags);
- cs4297a_update_ptr(s,CS_FALSE);
- cinfo.bytes = s->dma_adc.total_bytes;
- if (s->dma_adc.mapped) {
- cinfo.blocks =
- (cinfo.bytes >> s->dma_adc.fragshift) -
- s->dma_adc.blocks;
- s->dma_adc.blocks =
- cinfo.bytes >> s->dma_adc.fragshift;
- } else {
- if (s->conversion) {
- cinfo.blocks =
- s->dma_adc.count /
- 2 >> (s->dma_adc.fragshift - 1);
- } else
- cinfo.blocks =
- s->dma_adc.count >> s->dma_adc.
- fragshift;
- }
- if (s->conversion)
- cinfo.ptr = s->dma_adc.hwptr / 2;
- else
- cinfo.ptr = s->dma_adc.hwptr;
- if (s->dma_adc.mapped)
- s->dma_adc.count &= s->dma_adc.fragsize - 1;
- spin_unlock_irqrestore(&s->lock, flags);
- return copy_to_user((void *) arg, &cinfo, sizeof(cinfo)) ? -EFAULT : 0;
-
- case SNDCTL_DSP_GETOPTR:
- if (!(file->f_mode & FMODE_WRITE))
- return -EINVAL;
- if(!s->dma_dac.ready && prog_dmabuf_dac(s))
- return 0;
- spin_lock_irqsave(&s->lock, flags);
- cs4297a_update_ptr(s,CS_FALSE);
- cinfo.bytes = s->dma_dac.total_bytes;
- if (s->dma_dac.mapped) {
- cinfo.blocks =
- (cinfo.bytes >> s->dma_dac.fragshift) -
- s->dma_dac.blocks;
- s->dma_dac.blocks =
- cinfo.bytes >> s->dma_dac.fragshift;
- } else {
- cinfo.blocks =
- s->dma_dac.count >> s->dma_dac.fragshift;
- }
- cinfo.ptr = s->dma_dac.hwptr;
- if (s->dma_dac.mapped)
- s->dma_dac.count &= s->dma_dac.fragsize - 1;
- spin_unlock_irqrestore(&s->lock, flags);
- return copy_to_user((void *) arg, &cinfo, sizeof(cinfo)) ? -EFAULT : 0;
-
- case SNDCTL_DSP_GETBLKSIZE:
- if (file->f_mode & FMODE_WRITE) {
- if ((val = prog_dmabuf_dac(s)))
- return val;
- return put_user(s->dma_dac.fragsize, (int *) arg);
- }
- if ((val = prog_dmabuf_adc(s)))
- return val;
- if (s->conversion)
- return put_user(s->dma_adc.fragsize / 2,
- (int *) arg);
- else
- return put_user(s->dma_adc.fragsize, (int *) arg);
-
- case SNDCTL_DSP_SETFRAGMENT:
- if (get_user(val, (int *) arg))
- return -EFAULT;
- return 0; // Say OK, but do nothing.
-
- case SNDCTL_DSP_SUBDIVIDE:
- if ((file->f_mode & FMODE_READ && s->dma_adc.subdivision)
- || (file->f_mode & FMODE_WRITE
- && s->dma_dac.subdivision)) return -EINVAL;
- if (get_user(val, (int *) arg))
- return -EFAULT;
- if (val != 1 && val != 2 && val != 4)
- return -EINVAL;
- if (file->f_mode & FMODE_READ)
- s->dma_adc.subdivision = val;
- else if (file->f_mode & FMODE_WRITE)
- s->dma_dac.subdivision = val;
- return 0;
-
- case SOUND_PCM_READ_RATE:
- if (file->f_mode & FMODE_READ)
- return put_user(s->prop_adc.rate, (int *) arg);
- else if (file->f_mode & FMODE_WRITE)
- return put_user(s->prop_dac.rate, (int *) arg);
-
- case SOUND_PCM_READ_CHANNELS:
- if (file->f_mode & FMODE_READ)
- return put_user(s->prop_adc.channels, (int *) arg);
- else if (file->f_mode & FMODE_WRITE)
- return put_user(s->prop_dac.channels, (int *) arg);
-
- case SOUND_PCM_READ_BITS:
- if (file->f_mode & FMODE_READ)
- return
- put_user(
- (s->prop_adc.
- fmt & (AFMT_S8 | AFMT_U8)) ? 8 : 16,
- (int *) arg);
- else if (file->f_mode & FMODE_WRITE)
- return
- put_user(
- (s->prop_dac.
- fmt & (AFMT_S8 | AFMT_U8)) ? 8 : 16,
- (int *) arg);
-
- case SOUND_PCM_WRITE_FILTER:
- case SNDCTL_DSP_SETSYNCRO:
- case SOUND_PCM_READ_FILTER:
- return -EINVAL;
- }
- return mixer_ioctl(s, cmd, arg);
-}
-
-static long cs4297a_unlocked_ioctl(struct file *file, u_int cmd, u_long arg)
-{
- int ret;
-
- mutex_lock(&swarm_cs4297a_mutex);
- ret = cs4297a_ioctl(file, cmd, arg);
- mutex_unlock(&swarm_cs4297a_mutex);
-
- return ret;
-}
-
-static int cs4297a_release(struct inode *inode, struct file *file)
-{
- struct cs4297a_state *s =
- (struct cs4297a_state *) file->private_data;
-
- CS_DBGOUT(CS_FUNCTION | CS_RELEASE, 2, printk(KERN_INFO
- "cs4297a: cs4297a_release(): inode=0x%.8x file=0x%.8x f_mode=0x%x\n",
- (unsigned) inode, (unsigned) file, file->f_mode));
- VALIDATE_STATE(s);
-
- if (file->f_mode & FMODE_WRITE) {
- drain_dac(s, file->f_flags & O_NONBLOCK);
- mutex_lock(&s->open_sem_dac);
- stop_dac(s);
- dealloc_dmabuf(s, &s->dma_dac);
- s->open_mode &= ~FMODE_WRITE;
- mutex_unlock(&s->open_sem_dac);
- wake_up(&s->open_wait_dac);
- }
- if (file->f_mode & FMODE_READ) {
- drain_adc(s, file->f_flags & O_NONBLOCK);
- mutex_lock(&s->open_sem_adc);
- stop_adc(s);
- dealloc_dmabuf(s, &s->dma_adc);
- s->open_mode &= ~FMODE_READ;
- mutex_unlock(&s->open_sem_adc);
- wake_up(&s->open_wait_adc);
- }
- return 0;
-}
-
-static int cs4297a_locked_open(struct inode *inode, struct file *file)
-{
- int minor = iminor(inode);
- struct cs4297a_state *s=NULL;
- struct list_head *entry;
-
- CS_DBGOUT(CS_FUNCTION | CS_OPEN, 2, printk(KERN_INFO
- "cs4297a: cs4297a_open(): inode=0x%.8x file=0x%.8x f_mode=0x%x\n",
- (unsigned) inode, (unsigned) file, file->f_mode));
- CS_DBGOUT(CS_FUNCTION | CS_OPEN, 2, printk(KERN_INFO
- "cs4297a: status = %08x\n", (int)__raw_readq(SS_CSR(R_SER_STATUS_DEBUG))));
-
- list_for_each(entry, &cs4297a_devs)
- {
- s = list_entry(entry, struct cs4297a_state, list);
-
- if (!((s->dev_audio ^ minor) & ~0xf))
- break;
- }
- if (entry == &cs4297a_devs)
- return -ENODEV;
- if (!s) {
- CS_DBGOUT(CS_FUNCTION | CS_OPEN, 2, printk(KERN_INFO
- "cs4297a: cs4297a_open(): Error - unable to find audio state struct\n"));
- return -ENODEV;
- }
- VALIDATE_STATE(s);
- file->private_data = s;
-
- // wait for device to become free
- if (!(file->f_mode & (FMODE_WRITE | FMODE_READ))) {
- CS_DBGOUT(CS_FUNCTION | CS_OPEN | CS_ERROR, 2, printk(KERN_INFO
- "cs4297a: cs4297a_open(): Error - must open READ and/or WRITE\n"));
- return -ENODEV;
- }
- if (file->f_mode & FMODE_WRITE) {
- if (__raw_readq(SS_CSR(R_SER_DMA_DSCR_COUNT_TX)) != 0) {
- printk(KERN_ERR "cs4297a: TX pipe needs to drain\n");
- while (__raw_readq(SS_CSR(R_SER_DMA_DSCR_COUNT_TX)))
- ;
- }
-
- mutex_lock(&s->open_sem_dac);
- while (s->open_mode & FMODE_WRITE) {
- if (file->f_flags & O_NONBLOCK) {
- mutex_unlock(&s->open_sem_dac);
- return -EBUSY;
- }
- mutex_unlock(&s->open_sem_dac);
- oss_broken_sleep_on(&s->open_wait_dac, MAX_SCHEDULE_TIMEOUT);
-
- if (signal_pending(current)) {
- printk("open - sig pending\n");
- return -ERESTARTSYS;
- }
- mutex_lock(&s->open_sem_dac);
- }
- }
- if (file->f_mode & FMODE_READ) {
- mutex_lock(&s->open_sem_adc);
- while (s->open_mode & FMODE_READ) {
- if (file->f_flags & O_NONBLOCK) {
- mutex_unlock(&s->open_sem_adc);
- return -EBUSY;
- }
- mutex_unlock(&s->open_sem_adc);
- oss_broken_sleep_on(&s->open_wait_adc, MAX_SCHEDULE_TIMEOUT);
-
- if (signal_pending(current)) {
- printk("open - sig pending\n");
- return -ERESTARTSYS;
- }
- mutex_lock(&s->open_sem_adc);
- }
- }
- s->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
- if (file->f_mode & FMODE_READ) {
- s->prop_adc.fmt = AFMT_S16_BE;
- s->prop_adc.fmt_original = s->prop_adc.fmt;
- s->prop_adc.channels = 2;
- s->prop_adc.rate = 48000;
- s->conversion = 0;
- s->ena &= ~FMODE_READ;
- s->dma_adc.ossfragshift = s->dma_adc.ossmaxfrags =
- s->dma_adc.subdivision = 0;
- mutex_unlock(&s->open_sem_adc);
-
- if (prog_dmabuf_adc(s)) {
- CS_DBGOUT(CS_OPEN | CS_ERROR, 2, printk(KERN_ERR
- "cs4297a: adc Program dmabufs failed.\n"));
- cs4297a_release(inode, file);
- return -ENOMEM;
- }
- }
- if (file->f_mode & FMODE_WRITE) {
- s->prop_dac.fmt = AFMT_S16_BE;
- s->prop_dac.fmt_original = s->prop_dac.fmt;
- s->prop_dac.channels = 2;
- s->prop_dac.rate = 48000;
- s->conversion = 0;
- s->ena &= ~FMODE_WRITE;
- s->dma_dac.ossfragshift = s->dma_dac.ossmaxfrags =
- s->dma_dac.subdivision = 0;
- mutex_unlock(&s->open_sem_dac);
-
- if (prog_dmabuf_dac(s)) {
- CS_DBGOUT(CS_OPEN | CS_ERROR, 2, printk(KERN_ERR
- "cs4297a: dac Program dmabufs failed.\n"));
- cs4297a_release(inode, file);
- return -ENOMEM;
- }
- }
- CS_DBGOUT(CS_FUNCTION | CS_OPEN, 2,
- printk(KERN_INFO "cs4297a: cs4297a_open()- 0\n"));
- return nonseekable_open(inode, file);
-}
-
-static int cs4297a_open(struct inode *inode, struct file *file)
-{
- int ret;
-
- mutex_lock(&swarm_cs4297a_mutex);
- ret = cs4297a_open(inode, file);
- mutex_unlock(&swarm_cs4297a_mutex);
-
- return ret;
-}
-
-// ******************************************************************************************
-// Wave (audio) file operations struct.
-// ******************************************************************************************
-static const struct file_operations cs4297a_audio_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .read = cs4297a_read,
- .write = cs4297a_write,
- .poll = cs4297a_poll,
- .unlocked_ioctl = cs4297a_unlocked_ioctl,
- .mmap = cs4297a_mmap,
- .open = cs4297a_open,
- .release = cs4297a_release,
-};
-
-static void cs4297a_interrupt(int irq, void *dev_id)
-{
- struct cs4297a_state *s = (struct cs4297a_state *) dev_id;
- u32 status;
-
- status = __raw_readq(SS_CSR(R_SER_STATUS_DEBUG));
-
- CS_DBGOUT(CS_INTERRUPT, 6, printk(KERN_INFO
- "cs4297a: cs4297a_interrupt() HISR=0x%.8x\n", status));
-
-#if 0
- /* XXXKW what check *should* be done here? */
- if (!(status & (M_SYNCSER_RX_EOP_COUNT | M_SYNCSER_RX_OVERRUN | M_SYNCSER_RX_SYNC_ERR))) {
- status = __raw_readq(SS_CSR(R_SER_STATUS));
- printk(KERN_ERR "cs4297a: unexpected interrupt (status %08x)\n", status);
- return;
- }
-#endif
-
- if (status & M_SYNCSER_RX_SYNC_ERR) {
- status = __raw_readq(SS_CSR(R_SER_STATUS));
- printk(KERN_ERR "cs4297a: rx sync error (status %08x)\n", status);
- return;
- }
-
- if (status & M_SYNCSER_RX_OVERRUN) {
- int newptr, i;
- s->stats.rx_ovrrn++;
- printk(KERN_ERR "cs4297a: receive FIFO overrun\n");
-
- /* Fix things up: get the receive descriptor pool
- clean and give them back to the hardware */
- while (__raw_readq(SS_CSR(R_SER_DMA_DSCR_COUNT_RX)))
- ;
- newptr = (unsigned) (((__raw_readq(SS_CSR(R_SER_DMA_CUR_DSCR_ADDR_RX)) & M_DMA_CURDSCR_ADDR) -
- s->dma_adc.descrtab_phys) / sizeof(serdma_descr_t));
- for (i=0; i<DMA_DESCR; i++) {
- s->dma_adc.descrtab[i].descr_a &= ~M_DMA_SERRX_SOP;
- }
- s->dma_adc.swptr = s->dma_adc.hwptr = newptr;
- s->dma_adc.count = 0;
- s->dma_adc.sb_swptr = s->dma_adc.sb_hwptr = s->dma_adc.sample_buf;
- __raw_writeq(DMA_DESCR, SS_CSR(R_SER_DMA_DSCR_COUNT_RX));
- }
-
- spin_lock(&s->lock);
- cs4297a_update_ptr(s,CS_TRUE);
- spin_unlock(&s->lock);
-
- CS_DBGOUT(CS_INTERRUPT, 6, printk(KERN_INFO
- "cs4297a: cs4297a_interrupt()-\n"));
-}
-
-#if 0
-static struct initvol {
- int mixch;
- int vol;
-} initvol[] __initdata = {
-
- {SOUND_MIXER_WRITE_VOLUME, 0x4040},
- {SOUND_MIXER_WRITE_PCM, 0x4040},
- {SOUND_MIXER_WRITE_SYNTH, 0x4040},
- {SOUND_MIXER_WRITE_CD, 0x4040},
- {SOUND_MIXER_WRITE_LINE, 0x4040},
- {SOUND_MIXER_WRITE_LINE1, 0x4040},
- {SOUND_MIXER_WRITE_RECLEV, 0x0000},
- {SOUND_MIXER_WRITE_SPEAKER, 0x4040},
- {SOUND_MIXER_WRITE_MIC, 0x0000}
-};
-#endif
-
-static int __init cs4297a_init(void)
-{
- struct cs4297a_state *s;
- u32 pwr, id;
- mm_segment_t fs;
- int rval;
- u64 cfg;
- int mdio_val;
-
- CS_DBGOUT(CS_INIT | CS_FUNCTION, 2, printk(KERN_INFO
- "cs4297a: cs4297a_init_module()+ \n"));
-
- mdio_val = __raw_readq(KSEG1 + A_MAC_REGISTER(2, R_MAC_MDIO)) &
- (M_MAC_MDIO_DIR|M_MAC_MDIO_OUT);
-
- /* Check syscfg for synchronous serial on port 1 */
- cfg = __raw_readq(KSEG1 + A_SCD_SYSTEM_CFG);
- if (!(cfg & M_SYS_SER1_ENABLE)) {
- __raw_writeq(cfg | M_SYS_SER1_ENABLE, KSEG1+A_SCD_SYSTEM_CFG);
- cfg = __raw_readq(KSEG1 + A_SCD_SYSTEM_CFG);
- if (!(cfg & M_SYS_SER1_ENABLE)) {
- printk(KERN_INFO "cs4297a: serial port 1 not configured for synchronous operation\n");
- return -1;
- }
-
- printk(KERN_INFO "cs4297a: serial port 1 switching to synchronous operation\n");
-
- /* Force the codec (on SWARM) to reset by clearing
- GENO, preserving MDIO (no effect on CSWARM) */
- __raw_writeq(mdio_val, KSEG1+A_MAC_REGISTER(2, R_MAC_MDIO));
- udelay(10);
- }
-
- /* Now set GENO */
- __raw_writeq(mdio_val | M_MAC_GENC, KSEG1+A_MAC_REGISTER(2, R_MAC_MDIO));
- /* Give the codec some time to finish resetting (start the bit clock) */
- udelay(100);
-
- if (!(s = kzalloc(sizeof(struct cs4297a_state), GFP_KERNEL))) {
- CS_DBGOUT(CS_ERROR, 1, printk(KERN_ERR
- "cs4297a: probe() no memory for state struct.\n"));
- return -1;
- }
- s->magic = CS4297a_MAGIC;
- init_waitqueue_head(&s->dma_adc.wait);
- init_waitqueue_head(&s->dma_dac.wait);
- init_waitqueue_head(&s->dma_adc.reg_wait);
- init_waitqueue_head(&s->dma_dac.reg_wait);
- init_waitqueue_head(&s->open_wait);
- init_waitqueue_head(&s->open_wait_adc);
- init_waitqueue_head(&s->open_wait_dac);
- mutex_init(&s->open_sem_adc);
- mutex_init(&s->open_sem_dac);
- spin_lock_init(&s->lock);
-
- s->irq = K_INT_SER_1;
-
- if (request_irq
- (s->irq, cs4297a_interrupt, 0, "Crystal CS4297a", s)) {
- CS_DBGOUT(CS_INIT | CS_ERROR, 1,
- printk(KERN_ERR "cs4297a: irq %u in use\n", s->irq));
- goto err_irq;
- }
- if ((s->dev_audio = register_sound_dsp(&cs4297a_audio_fops, -1)) <
- 0) {
- CS_DBGOUT(CS_INIT | CS_ERROR, 1, printk(KERN_ERR
- "cs4297a: probe() register_sound_dsp() failed.\n"));
- goto err_dev1;
- }
- if ((s->dev_mixer = register_sound_mixer(&cs4297a_mixer_fops, -1)) <
- 0) {
- CS_DBGOUT(CS_INIT | CS_ERROR, 1, printk(KERN_ERR
- "cs4297a: probe() register_sound_mixer() failed.\n"));
- goto err_dev2;
- }
-
- if (ser_init(s) || dma_init(s)) {
- CS_DBGOUT(CS_INIT | CS_ERROR, 1, printk(KERN_ERR
- "cs4297a: ser_init failed.\n"));
- goto err_dev3;
- }
-
- do {
- udelay(4000);
- rval = cs4297a_read_ac97(s, AC97_POWER_CONTROL, &pwr);
- } while (!rval && (pwr != 0xf));
-
- if (!rval) {
- char *sb1250_duart_present;
-
- fs = get_fs();
- set_fs(KERNEL_DS);
-#if 0
- val = SOUND_MASK_LINE;
- mixer_ioctl(s, SOUND_MIXER_WRITE_RECSRC, (unsigned long) &val);
- for (i = 0; i < ARRAY_SIZE(initvol); i++) {
- val = initvol[i].vol;
- mixer_ioctl(s, initvol[i].mixch, (unsigned long) &val);
- }
-// cs4297a_write_ac97(s, 0x18, 0x0808);
-#else
- // cs4297a_write_ac97(s, 0x5e, 0x180);
- cs4297a_write_ac97(s, 0x02, 0x0808);
- cs4297a_write_ac97(s, 0x18, 0x0808);
-#endif
- set_fs(fs);
-
- list_add(&s->list, &cs4297a_devs);
-
- cs4297a_read_ac97(s, AC97_VENDOR_ID1, &id);
-
- sb1250_duart_present = symbol_get(sb1250_duart_present);
- if (sb1250_duart_present)
- sb1250_duart_present[1] = 0;
-
- printk(KERN_INFO "cs4297a: initialized (vendor id = %x)\n", id);
-
- CS_DBGOUT(CS_INIT | CS_FUNCTION, 2,
- printk(KERN_INFO "cs4297a: cs4297a_init_module()-\n"));
-
- return 0;
- }
-
- err_dev3:
- unregister_sound_mixer(s->dev_mixer);
- err_dev2:
- unregister_sound_dsp(s->dev_audio);
- err_dev1:
- free_irq(s->irq, s);
- err_irq:
- kfree(s);
-
- printk(KERN_INFO "cs4297a: initialization failed\n");
-
- return -1;
-}
-
-static void __exit cs4297a_cleanup(void)
-{
- /*
- XXXKW
- disable_irq, free_irq
- drain DMA queue
- disable DMA
- disable TX/RX
- free memory
- */
- CS_DBGOUT(CS_INIT | CS_FUNCTION, 2,
- printk(KERN_INFO "cs4297a: cleanup_cs4297a() finished\n"));
-}
-
-// ---------------------------------------------------------------------
-
-MODULE_AUTHOR("Kip Walker, Broadcom Corp.");
-MODULE_DESCRIPTION("Cirrus Logic CS4297a Driver for Broadcom SWARM board");
-
-// ---------------------------------------------------------------------
-
-module_init(cs4297a_init);
-module_exit(cs4297a_cleanup);
git.samba.org / sfrench / cifs-2.6.git / blobdiff