+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * ALSA driver for Xilinx ML403 AC97 Controller Reference
- * IP: opb_ac97_controller_ref_v1_00_a (EDK 8.1i)
- * IP: opb_ac97_controller_ref_v1_00_a (EDK 9.1i)
- *
- * Copyright (c) by 2007 Joachim Foerster <JOFT@gmx.de>
- */
-
-/* Some notes / status of this driver:
- *
- * - Don't wonder about some strange implementations of things - especially the
- * (heavy) shadowing of codec registers, with which I tried to reduce read
- * accesses to a minimum, because after a variable amount of accesses, the AC97
- * controller doesn't raise the register access finished bit anymore ...
- *
- * - Playback support seems to be pretty stable - no issues here.
- * - Capture support "works" now, too. Overruns don't happen any longer so often.
- * But there might still be some ...
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-
-#include <linux/platform_device.h>
-
-#include <linux/ioport.h>
-#include <linux/slab.h>
-#include <linux/io.h>
-#include <linux/interrupt.h>
-
-/* HZ */
-#include <linux/param.h>
-/* jiffies, time_*() */
-#include <linux/jiffies.h>
-/* schedule_timeout*() */
-#include <linux/sched.h>
-/* spin_lock*() */
-#include <linux/spinlock.h>
-/* struct mutex, mutex_init(), mutex_*lock() */
-#include <linux/mutex.h>
-
-/* snd_printk(), snd_printd() */
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/initval.h>
-#include <sound/ac97_codec.h>
-
-#include "pcm-indirect2.h"
-
-
-#define SND_ML403_AC97CR_DRIVER "ml403-ac97cr"
-
-MODULE_AUTHOR("Joachim Foerster <JOFT@gmx.de>");
-MODULE_DESCRIPTION("Xilinx ML403 AC97 Controller Reference");
-MODULE_LICENSE("GPL");
-MODULE_SUPPORTED_DEVICE("{{Xilinx,ML403 AC97 Controller Reference}}");
-
-static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
-static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
-static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;
-
-module_param_array(index, int, NULL, 0444);
-MODULE_PARM_DESC(index, "Index value for ML403 AC97 Controller Reference.");
-module_param_array(id, charp, NULL, 0444);
-MODULE_PARM_DESC(id, "ID string for ML403 AC97 Controller Reference.");
-module_param_array(enable, bool, NULL, 0444);
-MODULE_PARM_DESC(enable, "Enable this ML403 AC97 Controller Reference.");
-
-/* Special feature options */
-/*#define CODEC_WRITE_CHECK_RAF*/ /* don't return after a write to a codec
- * register, while RAF bit is not set
- */
-/* Debug options for code which may be removed completely in a final version */
-#ifdef CONFIG_SND_DEBUG
-/*#define CODEC_STAT*/ /* turn on some minimal "statistics"
- * about codec register usage
- */
-#define SND_PCM_INDIRECT2_STAT /* turn on some "statistics" about the
- * process of copying bytes from the
- * intermediate buffer to the hardware
- * fifo and the other way round
- */
-#endif
-
-/* Definition of a "level/facility dependent" printk(); may be removed
- * completely in a final version
- */
-#undef PDEBUG
-#ifdef CONFIG_SND_DEBUG
-/* "facilities" for PDEBUG */
-#define UNKNOWN (1<<0)
-#define CODEC_SUCCESS (1<<1)
-#define CODEC_FAKE (1<<2)
-#define INIT_INFO (1<<3)
-#define INIT_FAILURE (1<<4)
-#define WORK_INFO (1<<5)
-#define WORK_FAILURE (1<<6)
-
-#define PDEBUG_FACILITIES (UNKNOWN | INIT_FAILURE | WORK_FAILURE)
-
-#define PDEBUG(fac, fmt, args...) do { \
- if (fac & PDEBUG_FACILITIES) \
- snd_printd(KERN_DEBUG SND_ML403_AC97CR_DRIVER ": " \
- fmt, ##args); \
- } while (0)
-#else
-#define PDEBUG(fac, fmt, args...) /* nothing */
-#endif
-
-
-
-/* Defines for "waits"/timeouts (portions of HZ=250 on arch/ppc by default) */
-#define CODEC_TIMEOUT_ON_INIT 5 /* timeout for checking for codec
- * readiness (after insmod)
- */
-#ifndef CODEC_WRITE_CHECK_RAF
-#define CODEC_WAIT_AFTER_WRITE 100 /* general, static wait after a write
- * access to a codec register, may be
- * 0 to completely remove wait
- */
-#else
-#define CODEC_TIMEOUT_AFTER_WRITE 5 /* timeout after a write access to a
- * codec register, if RAF bit is used
- */
-#endif
-#define CODEC_TIMEOUT_AFTER_READ 5 /* timeout after a read access to a
- * codec register (checking RAF bit)
- */
-
-/* Infrastructure for codec register shadowing */
-#define LM4550_REG_OK (1<<0) /* register exists */
-#define LM4550_REG_DONEREAD (1<<1) /* read register once, value should be
- * the same currently in the register
- */
-#define LM4550_REG_NOSAVE (1<<2) /* values written to this register will
- * not be saved in the register
- */
-#define LM4550_REG_NOSHADOW (1<<3) /* don't do register shadowing, use plain
- * hardware access
- */
-#define LM4550_REG_READONLY (1<<4) /* register is read only */
-#define LM4550_REG_FAKEPROBE (1<<5) /* fake write _and_ read actions during
- * probe() correctly
- */
-#define LM4550_REG_FAKEREAD (1<<6) /* fake read access, always return
- * default value
- */
-#define LM4550_REG_ALLFAKE (LM4550_REG_FAKEREAD | LM4550_REG_FAKEPROBE)
-
-struct lm4550_reg {
- u16 value;
- u16 flag;
- u16 wmask;
- u16 def;
-};
-
-struct lm4550_reg lm4550_regfile[64] = {
- [AC97_RESET / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_NOSAVE \
- | LM4550_REG_FAKEREAD,
- .def = 0x0D50},
- [AC97_MASTER / 2] = {.flag = LM4550_REG_OK
- | LM4550_REG_FAKEPROBE,
- .wmask = 0x9F1F,
- .def = 0x8000},
- [AC97_HEADPHONE / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_FAKEPROBE,
- .wmask = 0x9F1F,
- .def = 0x8000},
- [AC97_MASTER_MONO / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_FAKEPROBE,
- .wmask = 0x801F,
- .def = 0x8000},
- [AC97_PC_BEEP / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_FAKEPROBE,
- .wmask = 0x801E,
- .def = 0x0},
- [AC97_PHONE / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_FAKEPROBE,
- .wmask = 0x801F,
- .def = 0x8008},
- [AC97_MIC / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_FAKEPROBE,
- .wmask = 0x805F,
- .def = 0x8008},
- [AC97_LINE / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_FAKEPROBE,
- .wmask = 0x9F1F,
- .def = 0x8808},
- [AC97_CD / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_FAKEPROBE,
- .wmask = 0x9F1F,
- .def = 0x8808},
- [AC97_VIDEO / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_FAKEPROBE,
- .wmask = 0x9F1F,
- .def = 0x8808},
- [AC97_AUX / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_FAKEPROBE,
- .wmask = 0x9F1F,
- .def = 0x8808},
- [AC97_PCM / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_FAKEPROBE,
- .wmask = 0x9F1F,
- .def = 0x8008},
- [AC97_REC_SEL / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_FAKEPROBE,
- .wmask = 0x707,
- .def = 0x0},
- [AC97_REC_GAIN / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_FAKEPROBE,
- .wmask = 0x8F0F,
- .def = 0x8000},
- [AC97_GENERAL_PURPOSE / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_FAKEPROBE,
- .def = 0x0,
- .wmask = 0xA380},
- [AC97_3D_CONTROL / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_FAKEREAD \
- | LM4550_REG_READONLY,
- .def = 0x0101},
- [AC97_POWERDOWN / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_NOSHADOW \
- | LM4550_REG_NOSAVE,
- .wmask = 0xFF00},
- /* may not write ones to
- * REF/ANL/DAC/ADC bits
- * FIXME: Is this ok?
- */
- [AC97_EXTENDED_ID / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_FAKEREAD \
- | LM4550_REG_READONLY,
- .def = 0x0201}, /* primary codec */
- [AC97_EXTENDED_STATUS / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_NOSHADOW \
- | LM4550_REG_NOSAVE,
- .wmask = 0x1},
- [AC97_PCM_FRONT_DAC_RATE / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_FAKEPROBE,
- .def = 0xBB80,
- .wmask = 0xFFFF},
- [AC97_PCM_LR_ADC_RATE / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_FAKEPROBE,
- .def = 0xBB80,
- .wmask = 0xFFFF},
- [AC97_VENDOR_ID1 / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_READONLY \
- | LM4550_REG_FAKEREAD,
- .def = 0x4E53},
- [AC97_VENDOR_ID2 / 2] = {.flag = LM4550_REG_OK \
- | LM4550_REG_READONLY \
- | LM4550_REG_FAKEREAD,
- .def = 0x4350}
-};
-
-#define LM4550_RF_OK(reg) (lm4550_regfile[reg / 2].flag & LM4550_REG_OK)
-
-static void lm4550_regfile_init(void)
-{
- int i;
- for (i = 0; i < 64; i++)
- if (lm4550_regfile[i].flag & LM4550_REG_FAKEPROBE)
- lm4550_regfile[i].value = lm4550_regfile[i].def;
-}
-
-static void lm4550_regfile_write_values_after_init(struct snd_ac97 *ac97)
-{
- int i;
- for (i = 0; i < 64; i++)
- if ((lm4550_regfile[i].flag & LM4550_REG_FAKEPROBE) &&
- (lm4550_regfile[i].value != lm4550_regfile[i].def)) {
- PDEBUG(CODEC_FAKE, "lm4550_regfile_write_values_after_"
- "init(): reg=0x%x value=0x%x / %d is different "
- "from def=0x%x / %d\n",
- i, lm4550_regfile[i].value,
- lm4550_regfile[i].value, lm4550_regfile[i].def,
- lm4550_regfile[i].def);
- snd_ac97_write(ac97, i * 2, lm4550_regfile[i].value);
- lm4550_regfile[i].flag |= LM4550_REG_DONEREAD;
- }
-}
-
-
-/* direct registers */
-#define CR_REG(ml403_ac97cr, x) ((ml403_ac97cr)->port + CR_REG_##x)
-
-#define CR_REG_PLAYFIFO 0x00
-#define CR_PLAYDATA(a) ((a) & 0xFFFF)
-
-#define CR_REG_RECFIFO 0x04
-#define CR_RECDATA(a) ((a) & 0xFFFF)
-
-#define CR_REG_STATUS 0x08
-#define CR_RECOVER (1<<7)
-#define CR_PLAYUNDER (1<<6)
-#define CR_CODECREADY (1<<5)
-#define CR_RAF (1<<4)
-#define CR_RECEMPTY (1<<3)
-#define CR_RECFULL (1<<2)
-#define CR_PLAYHALF (1<<1)
-#define CR_PLAYFULL (1<<0)
-
-#define CR_REG_RESETFIFO 0x0C
-#define CR_RECRESET (1<<1)
-#define CR_PLAYRESET (1<<0)
-
-#define CR_REG_CODEC_ADDR 0x10
-/* UG082 says:
- * #define CR_CODEC_ADDR(a) ((a) << 1)
- * #define CR_CODEC_READ (1<<0)
- * #define CR_CODEC_WRITE (0<<0)
- */
-/* RefDesign example says: */
-#define CR_CODEC_ADDR(a) ((a) << 0)
-#define CR_CODEC_READ (1<<7)
-#define CR_CODEC_WRITE (0<<7)
-
-#define CR_REG_CODEC_DATAREAD 0x14
-#define CR_CODEC_DATAREAD(v) ((v) & 0xFFFF)
-
-#define CR_REG_CODEC_DATAWRITE 0x18
-#define CR_CODEC_DATAWRITE(v) ((v) & 0xFFFF)
-
-#define CR_FIFO_SIZE 32
-
-struct snd_ml403_ac97cr {
- /* lock for access to (controller) registers */
- spinlock_t reg_lock;
- /* mutex for the whole sequence of accesses to (controller) registers
- * which affect codec registers
- */
- struct mutex cdc_mutex;
-
- int irq; /* for playback */
- int enable_irq; /* for playback */
-
- int capture_irq;
- int enable_capture_irq;
-
- struct resource *res_port;
- void *port;
-
- struct snd_ac97 *ac97;
- int ac97_fake;
-#ifdef CODEC_STAT
- int ac97_read;
- int ac97_write;
-#endif
-
- struct platform_device *pfdev;
- struct snd_card *card;
- struct snd_pcm *pcm;
- struct snd_pcm_substream *playback_substream;
- struct snd_pcm_substream *capture_substream;
-
- struct snd_pcm_indirect2 ind_rec; /* for playback */
- struct snd_pcm_indirect2 capture_ind2_rec;
-};
-
-static const struct snd_pcm_hardware snd_ml403_ac97cr_playback = {
- .info = (SNDRV_PCM_INFO_MMAP |
- SNDRV_PCM_INFO_INTERLEAVED |
- SNDRV_PCM_INFO_MMAP_VALID),
- .formats = SNDRV_PCM_FMTBIT_S16_BE,
- .rates = (SNDRV_PCM_RATE_CONTINUOUS |
- SNDRV_PCM_RATE_8000_48000),
- .rate_min = 4000,
- .rate_max = 48000,
- .channels_min = 2,
- .channels_max = 2,
- .buffer_bytes_max = (128*1024),
- .period_bytes_min = CR_FIFO_SIZE/2,
- .period_bytes_max = (64*1024),
- .periods_min = 2,
- .periods_max = (128*1024)/(CR_FIFO_SIZE/2),
- .fifo_size = 0,
-};
-
-static const struct snd_pcm_hardware snd_ml403_ac97cr_capture = {
- .info = (SNDRV_PCM_INFO_MMAP |
- SNDRV_PCM_INFO_INTERLEAVED |
- SNDRV_PCM_INFO_MMAP_VALID),
- .formats = SNDRV_PCM_FMTBIT_S16_BE,
- .rates = (SNDRV_PCM_RATE_CONTINUOUS |
- SNDRV_PCM_RATE_8000_48000),
- .rate_min = 4000,
- .rate_max = 48000,
- .channels_min = 2,
- .channels_max = 2,
- .buffer_bytes_max = (128*1024),
- .period_bytes_min = CR_FIFO_SIZE/2,
- .period_bytes_max = (64*1024),
- .periods_min = 2,
- .periods_max = (128*1024)/(CR_FIFO_SIZE/2),
- .fifo_size = 0,
-};
-
-static size_t
-snd_ml403_ac97cr_playback_ind2_zero(struct snd_pcm_substream *substream,
- struct snd_pcm_indirect2 *rec)
-{
- struct snd_ml403_ac97cr *ml403_ac97cr;
- int copied_words = 0;
- u32 full = 0;
-
- ml403_ac97cr = snd_pcm_substream_chip(substream);
-
- spin_lock(&ml403_ac97cr->reg_lock);
- while ((full = (in_be32(CR_REG(ml403_ac97cr, STATUS)) &
- CR_PLAYFULL)) != CR_PLAYFULL) {
- out_be32(CR_REG(ml403_ac97cr, PLAYFIFO), 0);
- copied_words++;
- }
- rec->hw_ready = 0;
- spin_unlock(&ml403_ac97cr->reg_lock);
-
- return (size_t) (copied_words * 2);
-}
-
-static size_t
-snd_ml403_ac97cr_playback_ind2_copy(struct snd_pcm_substream *substream,
- struct snd_pcm_indirect2 *rec,
- size_t bytes)
-{
- struct snd_ml403_ac97cr *ml403_ac97cr;
- u16 *src;
- int copied_words = 0;
- u32 full = 0;
-
- ml403_ac97cr = snd_pcm_substream_chip(substream);
- src = (u16 *)(substream->runtime->dma_area + rec->sw_data);
-
- spin_lock(&ml403_ac97cr->reg_lock);
- while (((full = (in_be32(CR_REG(ml403_ac97cr, STATUS)) &
- CR_PLAYFULL)) != CR_PLAYFULL) && (bytes > 1)) {
- out_be32(CR_REG(ml403_ac97cr, PLAYFIFO),
- CR_PLAYDATA(src[copied_words]));
- copied_words++;
- bytes = bytes - 2;
- }
- if (full != CR_PLAYFULL)
- rec->hw_ready = 1;
- else
- rec->hw_ready = 0;
- spin_unlock(&ml403_ac97cr->reg_lock);
-
- return (size_t) (copied_words * 2);
-}
-
-static size_t
-snd_ml403_ac97cr_capture_ind2_null(struct snd_pcm_substream *substream,
- struct snd_pcm_indirect2 *rec)
-{
- struct snd_ml403_ac97cr *ml403_ac97cr;
- int copied_words = 0;
- u32 empty = 0;
-
- ml403_ac97cr = snd_pcm_substream_chip(substream);
-
- spin_lock(&ml403_ac97cr->reg_lock);
- while ((empty = (in_be32(CR_REG(ml403_ac97cr, STATUS)) &
- CR_RECEMPTY)) != CR_RECEMPTY) {
- volatile u32 trash;
-
- trash = CR_RECDATA(in_be32(CR_REG(ml403_ac97cr, RECFIFO)));
- /* Hmmmm, really necessary? Don't want call to in_be32()
- * to be optimised away!
- */
- trash++;
- copied_words++;
- }
- rec->hw_ready = 0;
- spin_unlock(&ml403_ac97cr->reg_lock);
-
- return (size_t) (copied_words * 2);
-}
-
-static size_t
-snd_ml403_ac97cr_capture_ind2_copy(struct snd_pcm_substream *substream,
- struct snd_pcm_indirect2 *rec, size_t bytes)
-{
- struct snd_ml403_ac97cr *ml403_ac97cr;
- u16 *dst;
- int copied_words = 0;
- u32 empty = 0;
-
- ml403_ac97cr = snd_pcm_substream_chip(substream);
- dst = (u16 *)(substream->runtime->dma_area + rec->sw_data);
-
- spin_lock(&ml403_ac97cr->reg_lock);
- while (((empty = (in_be32(CR_REG(ml403_ac97cr, STATUS)) &
- CR_RECEMPTY)) != CR_RECEMPTY) && (bytes > 1)) {
- dst[copied_words] = CR_RECDATA(in_be32(CR_REG(ml403_ac97cr,
- RECFIFO)));
- copied_words++;
- bytes = bytes - 2;
- }
- if (empty != CR_RECEMPTY)
- rec->hw_ready = 1;
- else
- rec->hw_ready = 0;
- spin_unlock(&ml403_ac97cr->reg_lock);
-
- return (size_t) (copied_words * 2);
-}
-
-static snd_pcm_uframes_t
-snd_ml403_ac97cr_pcm_pointer(struct snd_pcm_substream *substream)
-{
- struct snd_ml403_ac97cr *ml403_ac97cr;
- struct snd_pcm_indirect2 *ind2_rec = NULL;
-
- ml403_ac97cr = snd_pcm_substream_chip(substream);
-
- if (substream == ml403_ac97cr->playback_substream)
- ind2_rec = &ml403_ac97cr->ind_rec;
- if (substream == ml403_ac97cr->capture_substream)
- ind2_rec = &ml403_ac97cr->capture_ind2_rec;
-
- if (ind2_rec != NULL)
- return snd_pcm_indirect2_pointer(substream, ind2_rec);
- return (snd_pcm_uframes_t) 0;
-}
-
-static int
-snd_ml403_ac97cr_pcm_playback_trigger(struct snd_pcm_substream *substream,
- int cmd)
-{
- struct snd_ml403_ac97cr *ml403_ac97cr;
- int err = 0;
-
- ml403_ac97cr = snd_pcm_substream_chip(substream);
-
- switch (cmd) {
- case SNDRV_PCM_TRIGGER_START:
- PDEBUG(WORK_INFO, "trigger(playback): START\n");
- ml403_ac97cr->ind_rec.hw_ready = 1;
-
- /* clear play FIFO */
- out_be32(CR_REG(ml403_ac97cr, RESETFIFO), CR_PLAYRESET);
-
- /* enable play irq */
- ml403_ac97cr->enable_irq = 1;
- enable_irq(ml403_ac97cr->irq);
- break;
- case SNDRV_PCM_TRIGGER_STOP:
- PDEBUG(WORK_INFO, "trigger(playback): STOP\n");
- ml403_ac97cr->ind_rec.hw_ready = 0;
-#ifdef SND_PCM_INDIRECT2_STAT
- snd_pcm_indirect2_stat(substream, &ml403_ac97cr->ind_rec);
-#endif
- /* disable play irq */
- disable_irq_nosync(ml403_ac97cr->irq);
- ml403_ac97cr->enable_irq = 0;
- break;
- default:
- err = -EINVAL;
- break;
- }
- PDEBUG(WORK_INFO, "trigger(playback): (done)\n");
- return err;
-}
-
-static int
-snd_ml403_ac97cr_pcm_capture_trigger(struct snd_pcm_substream *substream,
- int cmd)
-{
- struct snd_ml403_ac97cr *ml403_ac97cr;
- int err = 0;
-
- ml403_ac97cr = snd_pcm_substream_chip(substream);
-
- switch (cmd) {
- case SNDRV_PCM_TRIGGER_START:
- PDEBUG(WORK_INFO, "trigger(capture): START\n");
- ml403_ac97cr->capture_ind2_rec.hw_ready = 0;
-
- /* clear record FIFO */
- out_be32(CR_REG(ml403_ac97cr, RESETFIFO), CR_RECRESET);
-
- /* enable record irq */
- ml403_ac97cr->enable_capture_irq = 1;
- enable_irq(ml403_ac97cr->capture_irq);
- break;
- case SNDRV_PCM_TRIGGER_STOP:
- PDEBUG(WORK_INFO, "trigger(capture): STOP\n");
- ml403_ac97cr->capture_ind2_rec.hw_ready = 0;
-#ifdef SND_PCM_INDIRECT2_STAT
- snd_pcm_indirect2_stat(substream,
- &ml403_ac97cr->capture_ind2_rec);
-#endif
- /* disable capture irq */
- disable_irq_nosync(ml403_ac97cr->capture_irq);
- ml403_ac97cr->enable_capture_irq = 0;
- break;
- default:
- err = -EINVAL;
- break;
- }
- PDEBUG(WORK_INFO, "trigger(capture): (done)\n");
- return err;
-}
-
-static int
-snd_ml403_ac97cr_pcm_playback_prepare(struct snd_pcm_substream *substream)
-{
- struct snd_ml403_ac97cr *ml403_ac97cr;
- struct snd_pcm_runtime *runtime;
-
- ml403_ac97cr = snd_pcm_substream_chip(substream);
- runtime = substream->runtime;
-
- PDEBUG(WORK_INFO,
- "prepare(): period_bytes=%d, minperiod_bytes=%d\n",
- snd_pcm_lib_period_bytes(substream), CR_FIFO_SIZE / 2);
-
- /* set sampling rate */
- snd_ac97_set_rate(ml403_ac97cr->ac97, AC97_PCM_FRONT_DAC_RATE,
- runtime->rate);
- PDEBUG(WORK_INFO, "prepare(): rate=%d\n", runtime->rate);
-
- /* init struct for intermediate buffer */
- memset(&ml403_ac97cr->ind_rec, 0,
- sizeof(struct snd_pcm_indirect2));
- ml403_ac97cr->ind_rec.hw_buffer_size = CR_FIFO_SIZE;
- ml403_ac97cr->ind_rec.sw_buffer_size =
- snd_pcm_lib_buffer_bytes(substream);
- ml403_ac97cr->ind_rec.min_periods = -1;
- ml403_ac97cr->ind_rec.min_multiple =
- snd_pcm_lib_period_bytes(substream) / (CR_FIFO_SIZE / 2);
- PDEBUG(WORK_INFO, "prepare(): hw_buffer_size=%d, "
- "sw_buffer_size=%d, min_multiple=%d\n",
- CR_FIFO_SIZE, ml403_ac97cr->ind_rec.sw_buffer_size,
- ml403_ac97cr->ind_rec.min_multiple);
- return 0;
-}
-
-static int
-snd_ml403_ac97cr_pcm_capture_prepare(struct snd_pcm_substream *substream)
-{
- struct snd_ml403_ac97cr *ml403_ac97cr;
- struct snd_pcm_runtime *runtime;
-
- ml403_ac97cr = snd_pcm_substream_chip(substream);
- runtime = substream->runtime;
-
- PDEBUG(WORK_INFO,
- "prepare(capture): period_bytes=%d, minperiod_bytes=%d\n",
- snd_pcm_lib_period_bytes(substream), CR_FIFO_SIZE / 2);
-
- /* set sampling rate */
- snd_ac97_set_rate(ml403_ac97cr->ac97, AC97_PCM_LR_ADC_RATE,
- runtime->rate);
- PDEBUG(WORK_INFO, "prepare(capture): rate=%d\n", runtime->rate);
-
- /* init struct for intermediate buffer */
- memset(&ml403_ac97cr->capture_ind2_rec, 0,
- sizeof(struct snd_pcm_indirect2));
- ml403_ac97cr->capture_ind2_rec.hw_buffer_size = CR_FIFO_SIZE;
- ml403_ac97cr->capture_ind2_rec.sw_buffer_size =
- snd_pcm_lib_buffer_bytes(substream);
- ml403_ac97cr->capture_ind2_rec.min_multiple =
- snd_pcm_lib_period_bytes(substream) / (CR_FIFO_SIZE / 2);
- PDEBUG(WORK_INFO, "prepare(capture): hw_buffer_size=%d, "
- "sw_buffer_size=%d, min_multiple=%d\n", CR_FIFO_SIZE,
- ml403_ac97cr->capture_ind2_rec.sw_buffer_size,
- ml403_ac97cr->capture_ind2_rec.min_multiple);
- return 0;
-}
-
-static int snd_ml403_ac97cr_playback_open(struct snd_pcm_substream *substream)
-{
- struct snd_ml403_ac97cr *ml403_ac97cr;
- struct snd_pcm_runtime *runtime;
-
- ml403_ac97cr = snd_pcm_substream_chip(substream);
- runtime = substream->runtime;
-
- PDEBUG(WORK_INFO, "open(playback)\n");
- ml403_ac97cr->playback_substream = substream;
- runtime->hw = snd_ml403_ac97cr_playback;
-
- snd_pcm_hw_constraint_step(runtime, 0,
- SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
- CR_FIFO_SIZE / 2);
- return 0;
-}
-
-static int snd_ml403_ac97cr_capture_open(struct snd_pcm_substream *substream)
-{
- struct snd_ml403_ac97cr *ml403_ac97cr;
- struct snd_pcm_runtime *runtime;
-
- ml403_ac97cr = snd_pcm_substream_chip(substream);
- runtime = substream->runtime;
-
- PDEBUG(WORK_INFO, "open(capture)\n");
- ml403_ac97cr->capture_substream = substream;
- runtime->hw = snd_ml403_ac97cr_capture;
-
- snd_pcm_hw_constraint_step(runtime, 0,
- SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
- CR_FIFO_SIZE / 2);
- return 0;
-}
-
-static int snd_ml403_ac97cr_playback_close(struct snd_pcm_substream *substream)
-{
- struct snd_ml403_ac97cr *ml403_ac97cr;
-
- ml403_ac97cr = snd_pcm_substream_chip(substream);
-
- PDEBUG(WORK_INFO, "close(playback)\n");
- ml403_ac97cr->playback_substream = NULL;
- return 0;
-}
-
-static int snd_ml403_ac97cr_capture_close(struct snd_pcm_substream *substream)
-{
- struct snd_ml403_ac97cr *ml403_ac97cr;
-
- ml403_ac97cr = snd_pcm_substream_chip(substream);
-
- PDEBUG(WORK_INFO, "close(capture)\n");
- ml403_ac97cr->capture_substream = NULL;
- return 0;
-}
-
-static const struct snd_pcm_ops snd_ml403_ac97cr_playback_ops = {
- .open = snd_ml403_ac97cr_playback_open,
- .close = snd_ml403_ac97cr_playback_close,
- .prepare = snd_ml403_ac97cr_pcm_playback_prepare,
- .trigger = snd_ml403_ac97cr_pcm_playback_trigger,
- .pointer = snd_ml403_ac97cr_pcm_pointer,
-};
-
-static const struct snd_pcm_ops snd_ml403_ac97cr_capture_ops = {
- .open = snd_ml403_ac97cr_capture_open,
- .close = snd_ml403_ac97cr_capture_close,
- .prepare = snd_ml403_ac97cr_pcm_capture_prepare,
- .trigger = snd_ml403_ac97cr_pcm_capture_trigger,
- .pointer = snd_ml403_ac97cr_pcm_pointer,
-};
-
-static irqreturn_t snd_ml403_ac97cr_irq(int irq, void *dev_id)
-{
- struct snd_ml403_ac97cr *ml403_ac97cr;
- struct platform_device *pfdev;
- int cmp_irq;
-
- ml403_ac97cr = (struct snd_ml403_ac97cr *)dev_id;
- if (ml403_ac97cr == NULL)
- return IRQ_NONE;
-
- pfdev = ml403_ac97cr->pfdev;
-
- /* playback interrupt */
- cmp_irq = platform_get_irq(pfdev, 0);
- if (irq == cmp_irq) {
- if (ml403_ac97cr->enable_irq)
- snd_pcm_indirect2_playback_interrupt(
- ml403_ac97cr->playback_substream,
- &ml403_ac97cr->ind_rec,
- snd_ml403_ac97cr_playback_ind2_copy,
- snd_ml403_ac97cr_playback_ind2_zero);
- else
- goto __disable_irq;
- } else {
- /* record interrupt */
- cmp_irq = platform_get_irq(pfdev, 1);
- if (irq == cmp_irq) {
- if (ml403_ac97cr->enable_capture_irq)
- snd_pcm_indirect2_capture_interrupt(
- ml403_ac97cr->capture_substream,
- &ml403_ac97cr->capture_ind2_rec,
- snd_ml403_ac97cr_capture_ind2_copy,
- snd_ml403_ac97cr_capture_ind2_null);
- else
- goto __disable_irq;
- } else
- return IRQ_NONE;
- }
- return IRQ_HANDLED;
-
-__disable_irq:
- PDEBUG(INIT_INFO, "irq(): irq %d is meant to be disabled! So, now try "
- "to disable it _really_!\n", irq);
- disable_irq_nosync(irq);
- return IRQ_HANDLED;
-}
-
-static unsigned short
-snd_ml403_ac97cr_codec_read(struct snd_ac97 *ac97, unsigned short reg)
-{
- struct snd_ml403_ac97cr *ml403_ac97cr = ac97->private_data;
-#ifdef CODEC_STAT
- u32 stat;
- u32 rafaccess = 0;
-#endif
- unsigned long end_time;
- u16 value = 0;
-
- if (!LM4550_RF_OK(reg)) {
- snd_printk(KERN_WARNING SND_ML403_AC97CR_DRIVER ": "
- "access to unknown/unused codec register 0x%x "
- "ignored!\n", reg);
- return 0;
- }
- /* check if we can fake/answer this access from our shadow register */
- if ((lm4550_regfile[reg / 2].flag &
- (LM4550_REG_DONEREAD | LM4550_REG_ALLFAKE)) &&
- !(lm4550_regfile[reg / 2].flag & LM4550_REG_NOSHADOW)) {
- if (lm4550_regfile[reg / 2].flag & LM4550_REG_FAKEREAD) {
- PDEBUG(CODEC_FAKE, "codec_read(): faking read from "
- "reg=0x%x, val=0x%x / %d\n",
- reg, lm4550_regfile[reg / 2].def,
- lm4550_regfile[reg / 2].def);
- return lm4550_regfile[reg / 2].def;
- } else if ((lm4550_regfile[reg / 2].flag &
- LM4550_REG_FAKEPROBE) &&
- ml403_ac97cr->ac97_fake) {
- PDEBUG(CODEC_FAKE, "codec_read(): faking read from "
- "reg=0x%x, val=0x%x / %d (probe)\n",
- reg, lm4550_regfile[reg / 2].value,
- lm4550_regfile[reg / 2].value);
- return lm4550_regfile[reg / 2].value;
- } else {
-#ifdef CODEC_STAT
- PDEBUG(CODEC_FAKE, "codec_read(): read access "
- "answered by shadow register 0x%x (value=0x%x "
- "/ %d) (cw=%d cr=%d)\n",
- reg, lm4550_regfile[reg / 2].value,
- lm4550_regfile[reg / 2].value,
- ml403_ac97cr->ac97_write,
- ml403_ac97cr->ac97_read);
-#else
- PDEBUG(CODEC_FAKE, "codec_read(): read access "
- "answered by shadow register 0x%x (value=0x%x "
- "/ %d)\n",
- reg, lm4550_regfile[reg / 2].value,
- lm4550_regfile[reg / 2].value);
-#endif
- return lm4550_regfile[reg / 2].value;
- }
- }
- /* if we are here, we _have_ to access the codec really, no faking */
- if (mutex_lock_interruptible(&ml403_ac97cr->cdc_mutex) != 0)
- return 0;
-#ifdef CODEC_STAT
- ml403_ac97cr->ac97_read++;
-#endif
- spin_lock(&ml403_ac97cr->reg_lock);
- out_be32(CR_REG(ml403_ac97cr, CODEC_ADDR),
- CR_CODEC_ADDR(reg) | CR_CODEC_READ);
- spin_unlock(&ml403_ac97cr->reg_lock);
- end_time = jiffies + (HZ / CODEC_TIMEOUT_AFTER_READ);
- do {
- spin_lock(&ml403_ac97cr->reg_lock);
-#ifdef CODEC_STAT
- rafaccess++;
- stat = in_be32(CR_REG(ml403_ac97cr, STATUS));
- if ((stat & CR_RAF) == CR_RAF) {
- value = CR_CODEC_DATAREAD(
- in_be32(CR_REG(ml403_ac97cr, CODEC_DATAREAD)));
- PDEBUG(CODEC_SUCCESS, "codec_read(): (done) reg=0x%x, "
- "value=0x%x / %d (STATUS=0x%x)\n",
- reg, value, value, stat);
-#else
- if ((in_be32(CR_REG(ml403_ac97cr, STATUS)) &
- CR_RAF) == CR_RAF) {
- value = CR_CODEC_DATAREAD(
- in_be32(CR_REG(ml403_ac97cr, CODEC_DATAREAD)));
- PDEBUG(CODEC_SUCCESS, "codec_read(): (done) "
- "reg=0x%x, value=0x%x / %d\n",
- reg, value, value);
-#endif
- lm4550_regfile[reg / 2].value = value;
- lm4550_regfile[reg / 2].flag |= LM4550_REG_DONEREAD;
- spin_unlock(&ml403_ac97cr->reg_lock);
- mutex_unlock(&ml403_ac97cr->cdc_mutex);
- return value;
- }
- spin_unlock(&ml403_ac97cr->reg_lock);
- schedule_timeout_uninterruptible(1);
- } while (time_after(end_time, jiffies));
- /* read the DATAREAD register anyway, see comment below */
- spin_lock(&ml403_ac97cr->reg_lock);
- value =
- CR_CODEC_DATAREAD(in_be32(CR_REG(ml403_ac97cr, CODEC_DATAREAD)));
- spin_unlock(&ml403_ac97cr->reg_lock);
-#ifdef CODEC_STAT
- snd_printk(KERN_WARNING SND_ML403_AC97CR_DRIVER ": "
- "timeout while codec read! "
- "(reg=0x%x, last STATUS=0x%x, DATAREAD=0x%x / %d, %d) "
- "(cw=%d, cr=%d)\n",
- reg, stat, value, value, rafaccess,
- ml403_ac97cr->ac97_write, ml403_ac97cr->ac97_read);
-#else
- snd_printk(KERN_WARNING SND_ML403_AC97CR_DRIVER ": "
- "timeout while codec read! "
- "(reg=0x%x, DATAREAD=0x%x / %d)\n",
- reg, value, value);
-#endif
- /* BUG: This is PURE speculation! But after _most_ read timeouts the
- * value in the register is ok!
- */
- lm4550_regfile[reg / 2].value = value;
- lm4550_regfile[reg / 2].flag |= LM4550_REG_DONEREAD;
- mutex_unlock(&ml403_ac97cr->cdc_mutex);
- return value;
-}
-
-static void
-snd_ml403_ac97cr_codec_write(struct snd_ac97 *ac97, unsigned short reg,
- unsigned short val)
-{
- struct snd_ml403_ac97cr *ml403_ac97cr = ac97->private_data;
-
-#ifdef CODEC_STAT
- u32 stat;
- u32 rafaccess = 0;
-#endif
-#ifdef CODEC_WRITE_CHECK_RAF
- unsigned long end_time;
-#endif
-
- if (!LM4550_RF_OK(reg)) {
- snd_printk(KERN_WARNING SND_ML403_AC97CR_DRIVER ": "
- "access to unknown/unused codec register 0x%x "
- "ignored!\n", reg);
- return;
- }
- if (lm4550_regfile[reg / 2].flag & LM4550_REG_READONLY) {
- snd_printk(KERN_WARNING SND_ML403_AC97CR_DRIVER ": "
- "write access to read only codec register 0x%x "
- "ignored!\n", reg);
- return;
- }
- if ((val & lm4550_regfile[reg / 2].wmask) != val) {
- snd_printk(KERN_WARNING SND_ML403_AC97CR_DRIVER ": "
- "write access to codec register 0x%x "
- "with bad value 0x%x / %d!\n",
- reg, val, val);
- val = val & lm4550_regfile[reg / 2].wmask;
- }
- if (((lm4550_regfile[reg / 2].flag & LM4550_REG_FAKEPROBE) &&
- ml403_ac97cr->ac97_fake) &&
- !(lm4550_regfile[reg / 2].flag & LM4550_REG_NOSHADOW)) {
- PDEBUG(CODEC_FAKE, "codec_write(): faking write to reg=0x%x, "
- "val=0x%x / %d\n", reg, val, val);
- lm4550_regfile[reg / 2].value = (val &
- lm4550_regfile[reg / 2].wmask);
- return;
- }
- if (mutex_lock_interruptible(&ml403_ac97cr->cdc_mutex) != 0)
- return;
-#ifdef CODEC_STAT
- ml403_ac97cr->ac97_write++;
-#endif
- spin_lock(&ml403_ac97cr->reg_lock);
- out_be32(CR_REG(ml403_ac97cr, CODEC_DATAWRITE),
- CR_CODEC_DATAWRITE(val));
- out_be32(CR_REG(ml403_ac97cr, CODEC_ADDR),
- CR_CODEC_ADDR(reg) | CR_CODEC_WRITE);
- spin_unlock(&ml403_ac97cr->reg_lock);
-#ifdef CODEC_WRITE_CHECK_RAF
- /* check CR_CODEC_RAF bit to see if write access to register is done;
- * loop until bit is set or timeout happens
- */
- end_time = jiffies + HZ / CODEC_TIMEOUT_AFTER_WRITE;
- do {
- spin_lock(&ml403_ac97cr->reg_lock);
-#ifdef CODEC_STAT
- rafaccess++;
- stat = in_be32(CR_REG(ml403_ac97cr, STATUS))
- if ((stat & CR_RAF) == CR_RAF) {
-#else
- if ((in_be32(CR_REG(ml403_ac97cr, STATUS)) &
- CR_RAF) == CR_RAF) {
-#endif
- PDEBUG(CODEC_SUCCESS, "codec_write(): (done) "
- "reg=0x%x, value=%d / 0x%x\n",
- reg, val, val);
- if (!(lm4550_regfile[reg / 2].flag &
- LM4550_REG_NOSHADOW) &&
- !(lm4550_regfile[reg / 2].flag &
- LM4550_REG_NOSAVE))
- lm4550_regfile[reg / 2].value = val;
- lm4550_regfile[reg / 2].flag |= LM4550_REG_DONEREAD;
- spin_unlock(&ml403_ac97cr->reg_lock);
- mutex_unlock(&ml403_ac97cr->cdc_mutex);
- return;
- }
- spin_unlock(&ml403_ac97cr->reg_lock);
- schedule_timeout_uninterruptible(1);
- } while (time_after(end_time, jiffies));
-#ifdef CODEC_STAT
- snd_printk(KERN_WARNING SND_ML403_AC97CR_DRIVER ": "
- "timeout while codec write "
- "(reg=0x%x, val=0x%x / %d, last STATUS=0x%x, %d) "
- "(cw=%d, cr=%d)\n",
- reg, val, val, stat, rafaccess, ml403_ac97cr->ac97_write,
- ml403_ac97cr->ac97_read);
-#else
- snd_printk(KERN_WARNING SND_ML403_AC97CR_DRIVER ": "
- "timeout while codec write (reg=0x%x, val=0x%x / %d)\n",
- reg, val, val);
-#endif
-#else /* CODEC_WRITE_CHECK_RAF */
-#if CODEC_WAIT_AFTER_WRITE > 0
- /* officially, in AC97 spec there is no possibility for a AC97
- * controller to determine, if write access is done or not - so: How
- * is Xilinx able to provide a RAF bit for write access?
- * => very strange, thus just don't check RAF bit (compare with
- * Xilinx's example app in EDK 8.1i) and wait
- */
- schedule_timeout_uninterruptible(HZ / CODEC_WAIT_AFTER_WRITE);
-#endif
- PDEBUG(CODEC_SUCCESS, "codec_write(): (done) "
- "reg=0x%x, value=%d / 0x%x (no RAF check)\n",
- reg, val, val);
-#endif
- mutex_unlock(&ml403_ac97cr->cdc_mutex);
- return;
-}
-
-static int
-snd_ml403_ac97cr_chip_init(struct snd_ml403_ac97cr *ml403_ac97cr)
-{
- unsigned long end_time;
- PDEBUG(INIT_INFO, "chip_init():\n");
- end_time = jiffies + HZ / CODEC_TIMEOUT_ON_INIT;
- do {
- if (in_be32(CR_REG(ml403_ac97cr, STATUS)) & CR_CODECREADY) {
- /* clear both hardware FIFOs */
- out_be32(CR_REG(ml403_ac97cr, RESETFIFO),
- CR_RECRESET | CR_PLAYRESET);
- PDEBUG(INIT_INFO, "chip_init(): (done)\n");
- return 0;
- }
- schedule_timeout_uninterruptible(1);
- } while (time_after(end_time, jiffies));
- snd_printk(KERN_ERR SND_ML403_AC97CR_DRIVER ": "
- "timeout while waiting for codec, "
- "not ready!\n");
- return -EBUSY;
-}
-
-static int snd_ml403_ac97cr_free(struct snd_ml403_ac97cr *ml403_ac97cr)
-{
- PDEBUG(INIT_INFO, "free():\n");
- /* irq release */
- if (ml403_ac97cr->irq >= 0)
- free_irq(ml403_ac97cr->irq, ml403_ac97cr);
- if (ml403_ac97cr->capture_irq >= 0)
- free_irq(ml403_ac97cr->capture_irq, ml403_ac97cr);
- /* give back "port" */
- iounmap(ml403_ac97cr->port);
- kfree(ml403_ac97cr);
- PDEBUG(INIT_INFO, "free(): (done)\n");
- return 0;
-}
-
-static int snd_ml403_ac97cr_dev_free(struct snd_device *snddev)
-{
- struct snd_ml403_ac97cr *ml403_ac97cr = snddev->device_data;
- PDEBUG(INIT_INFO, "dev_free():\n");
- return snd_ml403_ac97cr_free(ml403_ac97cr);
-}
-
-static int
-snd_ml403_ac97cr_create(struct snd_card *card, struct platform_device *pfdev,
- struct snd_ml403_ac97cr **rml403_ac97cr)
-{
- struct snd_ml403_ac97cr *ml403_ac97cr;
- int err;
- static const struct snd_device_ops ops = {
- .dev_free = snd_ml403_ac97cr_dev_free,
- };
- struct resource *resource;
- int irq;
-
- *rml403_ac97cr = NULL;
- ml403_ac97cr = kzalloc(sizeof(*ml403_ac97cr), GFP_KERNEL);
- if (ml403_ac97cr == NULL)
- return -ENOMEM;
- spin_lock_init(&ml403_ac97cr->reg_lock);
- mutex_init(&ml403_ac97cr->cdc_mutex);
- ml403_ac97cr->card = card;
- ml403_ac97cr->pfdev = pfdev;
- ml403_ac97cr->irq = -1;
- ml403_ac97cr->enable_irq = 0;
- ml403_ac97cr->capture_irq = -1;
- ml403_ac97cr->enable_capture_irq = 0;
- ml403_ac97cr->port = NULL;
- ml403_ac97cr->res_port = NULL;
-
- PDEBUG(INIT_INFO, "Trying to reserve resources now ...\n");
- resource = platform_get_resource(pfdev, IORESOURCE_MEM, 0);
- /* get "port" */
- ml403_ac97cr->port = ioremap(resource->start,
- (resource->end) -
- (resource->start) + 1);
- if (ml403_ac97cr->port == NULL) {
- snd_printk(KERN_ERR SND_ML403_AC97CR_DRIVER ": "
- "unable to remap memory region (%pR)\n",
- resource);
- snd_ml403_ac97cr_free(ml403_ac97cr);
- return -EBUSY;
- }
- snd_printk(KERN_INFO SND_ML403_AC97CR_DRIVER ": "
- "remap controller memory region to "
- "0x%x done\n", (unsigned int)ml403_ac97cr->port);
- /* get irq */
- irq = platform_get_irq(pfdev, 0);
- if (request_irq(irq, snd_ml403_ac97cr_irq, 0,
- dev_name(&pfdev->dev), (void *)ml403_ac97cr)) {
- snd_printk(KERN_ERR SND_ML403_AC97CR_DRIVER ": "
- "unable to grab IRQ %d\n",
- irq);
- snd_ml403_ac97cr_free(ml403_ac97cr);
- return -EBUSY;
- }
- ml403_ac97cr->irq = irq;
- snd_printk(KERN_INFO SND_ML403_AC97CR_DRIVER ": "
- "request (playback) irq %d done\n",
- ml403_ac97cr->irq);
- irq = platform_get_irq(pfdev, 1);
- if (request_irq(irq, snd_ml403_ac97cr_irq, 0,
- dev_name(&pfdev->dev), (void *)ml403_ac97cr)) {
- snd_printk(KERN_ERR SND_ML403_AC97CR_DRIVER ": "
- "unable to grab IRQ %d\n",
- irq);
- snd_ml403_ac97cr_free(ml403_ac97cr);
- return -EBUSY;
- }
- ml403_ac97cr->capture_irq = irq;
- snd_printk(KERN_INFO SND_ML403_AC97CR_DRIVER ": "
- "request (capture) irq %d done\n",
- ml403_ac97cr->capture_irq);
-
- err = snd_ml403_ac97cr_chip_init(ml403_ac97cr);
- if (err < 0) {
- snd_ml403_ac97cr_free(ml403_ac97cr);
- return err;
- }
-
- err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, ml403_ac97cr, &ops);
- if (err < 0) {
- PDEBUG(INIT_FAILURE, "probe(): snd_device_new() failed!\n");
- snd_ml403_ac97cr_free(ml403_ac97cr);
- return err;
- }
-
- *rml403_ac97cr = ml403_ac97cr;
- return 0;
-}
-
-static void snd_ml403_ac97cr_mixer_free(struct snd_ac97 *ac97)
-{
- struct snd_ml403_ac97cr *ml403_ac97cr = ac97->private_data;
- PDEBUG(INIT_INFO, "mixer_free():\n");
- ml403_ac97cr->ac97 = NULL;
- PDEBUG(INIT_INFO, "mixer_free(): (done)\n");
-}
-
-static int
-snd_ml403_ac97cr_mixer(struct snd_ml403_ac97cr *ml403_ac97cr)
-{
- struct snd_ac97_bus *bus;
- struct snd_ac97_template ac97;
- int err;
- static const struct snd_ac97_bus_ops ops = {
- .write = snd_ml403_ac97cr_codec_write,
- .read = snd_ml403_ac97cr_codec_read,
- };
- PDEBUG(INIT_INFO, "mixer():\n");
- err = snd_ac97_bus(ml403_ac97cr->card, 0, &ops, NULL, &bus);
- if (err < 0)
- return err;
-
- memset(&ac97, 0, sizeof(ac97));
- ml403_ac97cr->ac97_fake = 1;
- lm4550_regfile_init();
-#ifdef CODEC_STAT
- ml403_ac97cr->ac97_read = 0;
- ml403_ac97cr->ac97_write = 0;
-#endif
- ac97.private_data = ml403_ac97cr;
- ac97.private_free = snd_ml403_ac97cr_mixer_free;
- ac97.scaps = AC97_SCAP_AUDIO | AC97_SCAP_SKIP_MODEM |
- AC97_SCAP_NO_SPDIF;
- err = snd_ac97_mixer(bus, &ac97, &ml403_ac97cr->ac97);
- ml403_ac97cr->ac97_fake = 0;
- lm4550_regfile_write_values_after_init(ml403_ac97cr->ac97);
- PDEBUG(INIT_INFO, "mixer(): (done) snd_ac97_mixer()=%d\n", err);
- return err;
-}
-
-static int
-snd_ml403_ac97cr_pcm(struct snd_ml403_ac97cr *ml403_ac97cr, int device)
-{
- struct snd_pcm *pcm;
- int err;
-
- err = snd_pcm_new(ml403_ac97cr->card, "ML403AC97CR/1", device, 1, 1,
- &pcm);
- if (err < 0)
- return err;
- snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
- &snd_ml403_ac97cr_playback_ops);
- snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
- &snd_ml403_ac97cr_capture_ops);
- pcm->private_data = ml403_ac97cr;
- pcm->info_flags = 0;
- strcpy(pcm->name, "ML403AC97CR DAC/ADC");
- ml403_ac97cr->pcm = pcm;
-
- snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
- NULL,
- 64 * 1024,
- 128 * 1024);
- return 0;
-}
-
-static int snd_ml403_ac97cr_probe(struct platform_device *pfdev)
-{
- struct snd_card *card;
- struct snd_ml403_ac97cr *ml403_ac97cr = NULL;
- int err;
- int dev = pfdev->id;
-
- if (dev >= SNDRV_CARDS)
- return -ENODEV;
- if (!enable[dev])
- return -ENOENT;
-
- err = snd_card_new(&pfdev->dev, index[dev], id[dev], THIS_MODULE,
- 0, &card);
- if (err < 0)
- return err;
- err = snd_ml403_ac97cr_create(card, pfdev, &ml403_ac97cr);
- if (err < 0) {
- PDEBUG(INIT_FAILURE, "probe(): create failed!\n");
- snd_card_free(card);
- return err;
- }
- PDEBUG(INIT_INFO, "probe(): create done\n");
- card->private_data = ml403_ac97cr;
- err = snd_ml403_ac97cr_mixer(ml403_ac97cr);
- if (err < 0) {
- snd_card_free(card);
- return err;
- }
- PDEBUG(INIT_INFO, "probe(): mixer done\n");
- err = snd_ml403_ac97cr_pcm(ml403_ac97cr, 0);
- if (err < 0) {
- snd_card_free(card);
- return err;
- }
- PDEBUG(INIT_INFO, "probe(): PCM done\n");
- strcpy(card->driver, SND_ML403_AC97CR_DRIVER);
- strcpy(card->shortname, "ML403 AC97 Controller Reference");
- sprintf(card->longname, "%s %s at 0x%lx, irq %i & %i, device %i",
- card->shortname, card->driver,
- (unsigned long)ml403_ac97cr->port, ml403_ac97cr->irq,
- ml403_ac97cr->capture_irq, dev + 1);
-
- err = snd_card_register(card);
- if (err < 0) {
- snd_card_free(card);
- return err;
- }
- platform_set_drvdata(pfdev, card);
- PDEBUG(INIT_INFO, "probe(): (done)\n");
- return 0;
-}
-
-static int snd_ml403_ac97cr_remove(struct platform_device *pfdev)
-{
- snd_card_free(platform_get_drvdata(pfdev));
- return 0;
-}
-
-/* work with hotplug and coldplug */
-MODULE_ALIAS("platform:" SND_ML403_AC97CR_DRIVER);
-
-static struct platform_driver snd_ml403_ac97cr_driver = {
- .probe = snd_ml403_ac97cr_probe,
- .remove = snd_ml403_ac97cr_remove,
- .driver = {
- .name = SND_ML403_AC97CR_DRIVER,
- },
-};
-
-module_platform_driver(snd_ml403_ac97cr_driver);
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Helper functions for indirect PCM data transfer to a simple FIFO in
- * hardware (small, no possibility to read "hardware io position",
- * updating position done by interrupt, ...)
- *
- * Copyright (c) by 2007 Joachim Foerster <JOFT@gmx.de>
- *
- * Based on "pcm-indirect.h" (alsa-driver-1.0.13) by
- *
- * Copyright (c) by Takashi Iwai <tiwai@suse.de>
- * Jaroslav Kysela <perex@suse.cz>
- */
-
-/* snd_printk/d() */
-#include <sound/core.h>
-/* struct snd_pcm_substream, struct snd_pcm_runtime, snd_pcm_uframes_t
- * snd_pcm_period_elapsed() */
-#include <sound/pcm.h>
-
-#include "pcm-indirect2.h"
-
-#ifdef SND_PCM_INDIRECT2_STAT
-/* jiffies */
-#include <linux/jiffies.h>
-
-void snd_pcm_indirect2_stat(struct snd_pcm_substream *substream,
- struct snd_pcm_indirect2 *rec)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- int i;
- int j;
- int k;
- int seconds = (rec->lastbytetime - rec->firstbytetime) / HZ;
-
- snd_printk(KERN_DEBUG "STAT: mul_elapsed: %u, mul_elapsed_real: %d, "
- "irq_occurred: %d\n",
- rec->mul_elapsed, rec->mul_elapsed_real, rec->irq_occured);
- snd_printk(KERN_DEBUG "STAT: min_multiple: %d (irqs/period)\n",
- rec->min_multiple);
- snd_printk(KERN_DEBUG "STAT: firstbytetime: %lu, lastbytetime: %lu, "
- "firstzerotime: %lu\n",
- rec->firstbytetime, rec->lastbytetime, rec->firstzerotime);
- snd_printk(KERN_DEBUG "STAT: bytes2hw: %u Bytes => (by runtime->rate) "
- "length: %d s\n",
- rec->bytes2hw, rec->bytes2hw / 2 / 2 / runtime->rate);
- snd_printk(KERN_DEBUG "STAT: (by measurement) length: %d => "
- "rate: %d Bytes/s = %d Frames/s|Hz\n",
- seconds, rec->bytes2hw / seconds,
- rec->bytes2hw / 2 / 2 / seconds);
- snd_printk(KERN_DEBUG
- "STAT: zeros2hw: %u = %d ms ~ %d * %d zero copies\n",
- rec->zeros2hw, ((rec->zeros2hw / 2 / 2) * 1000) /
- runtime->rate,
- rec->zeros2hw / (rec->hw_buffer_size / 2),
- (rec->hw_buffer_size / 2));
- snd_printk(KERN_DEBUG "STAT: pointer_calls: %u, lastdifftime: %u\n",
- rec->pointer_calls, rec->lastdifftime);
- snd_printk(KERN_DEBUG "STAT: sw_io: %d, sw_data: %d\n", rec->sw_io,
- rec->sw_data);
- snd_printk(KERN_DEBUG "STAT: byte_sizes[]:\n");
- k = 0;
- for (j = 0; j < 8; j++) {
- for (i = j * 8; i < (j + 1) * 8; i++)
- if (rec->byte_sizes[i] != 0) {
- snd_printk(KERN_DEBUG "%u: %u",
- i, rec->byte_sizes[i]);
- k++;
- }
- if (((k % 8) == 0) && (k != 0)) {
- snd_printk(KERN_DEBUG "\n");
- k = 0;
- }
- }
- snd_printk(KERN_DEBUG "\n");
- snd_printk(KERN_DEBUG "STAT: zero_sizes[]:\n");
- for (j = 0; j < 8; j++) {
- k = 0;
- for (i = j * 8; i < (j + 1) * 8; i++)
- if (rec->zero_sizes[i] != 0)
- snd_printk(KERN_DEBUG "%u: %u",
- i, rec->zero_sizes[i]);
- else
- k++;
- if (!k)
- snd_printk(KERN_DEBUG "\n");
- }
- snd_printk(KERN_DEBUG "\n");
- snd_printk(KERN_DEBUG "STAT: min_adds[]:\n");
- for (j = 0; j < 8; j++) {
- if (rec->min_adds[j] != 0)
- snd_printk(KERN_DEBUG "%u: %u", j, rec->min_adds[j]);
- }
- snd_printk(KERN_DEBUG "\n");
- snd_printk(KERN_DEBUG "STAT: mul_adds[]:\n");
- for (j = 0; j < 8; j++) {
- if (rec->mul_adds[j] != 0)
- snd_printk(KERN_DEBUG "%u: %u", j, rec->mul_adds[j]);
- }
- snd_printk(KERN_DEBUG "\n");
- snd_printk(KERN_DEBUG
- "STAT: zero_times_saved: %d, zero_times_notsaved: %d\n",
- rec->zero_times_saved, rec->zero_times_notsaved);
- /* snd_printk(KERN_DEBUG "STAT: zero_times[]\n");
- i = 0;
- for (j = 0; j < 3750; j++) {
- if (rec->zero_times[j] != 0) {
- snd_printk(KERN_DEBUG "%u: %u", j, rec->zero_times[j]);
- i++;
- }
- if (((i % 8) == 0) && (i != 0))
- snd_printk(KERN_DEBUG "\n");
- }
- snd_printk(KERN_DEBUG "\n"); */
- return;
-}
-#endif
-
-/*
- * _internal_ helper function for playback/capture transfer function
- */
-static void
-snd_pcm_indirect2_increase_min_periods(struct snd_pcm_substream *substream,
- struct snd_pcm_indirect2 *rec,
- int isplay, int iscopy,
- unsigned int bytes)
-{
- if (rec->min_periods >= 0) {
- if (iscopy) {
- rec->sw_io += bytes;
- if (rec->sw_io >= rec->sw_buffer_size)
- rec->sw_io -= rec->sw_buffer_size;
- } else if (isplay) {
- /* If application does not write data in multiples of
- * a period, move sw_data to the next correctly aligned
- * position, so that sw_io can converge to it (in the
- * next step).
- */
- if (!rec->check_alignment) {
- if (rec->bytes2hw %
- snd_pcm_lib_period_bytes(substream)) {
- unsigned bytes2hw_aligned =
- (1 +
- (rec->bytes2hw /
- snd_pcm_lib_period_bytes
- (substream))) *
- snd_pcm_lib_period_bytes
- (substream);
- rec->sw_data =
- bytes2hw_aligned %
- rec->sw_buffer_size;
-#ifdef SND_PCM_INDIRECT2_STAT
- snd_printk(KERN_DEBUG
- "STAT: @re-align: aligned "
- "bytes2hw to next period "
- "size boundary: %d "
- "(instead of %d)\n",
- bytes2hw_aligned,
- rec->bytes2hw);
- snd_printk(KERN_DEBUG
- "STAT: @re-align: sw_data "
- "moves to: %d\n",
- rec->sw_data);
-#endif
- }
- rec->check_alignment = 1;
- }
- /* We are at the end and are copying zeros into the
- * fifo.
- * Now, we have to make sure that sw_io is increased
- * until the position of sw_data: Filling the fifo with
- * the first zeros means, the last bytes were played.
- */
- if (rec->sw_io != rec->sw_data) {
- unsigned int diff;
- if (rec->sw_data > rec->sw_io)
- diff = rec->sw_data - rec->sw_io;
- else
- diff = (rec->sw_buffer_size -
- rec->sw_io) +
- rec->sw_data;
- if (bytes >= diff)
- rec->sw_io = rec->sw_data;
- else {
- rec->sw_io += bytes;
- if (rec->sw_io >= rec->sw_buffer_size)
- rec->sw_io -=
- rec->sw_buffer_size;
- }
- }
- }
- rec->min_period_count += bytes;
- if (rec->min_period_count >= (rec->hw_buffer_size / 2)) {
- rec->min_periods += (rec->min_period_count /
- (rec->hw_buffer_size / 2));
-#ifdef SND_PCM_INDIRECT2_STAT
- if ((rec->min_period_count /
- (rec->hw_buffer_size / 2)) > 7)
- snd_printk(KERN_DEBUG
- "STAT: more than 7 (%d) min_adds "
- "at once - too big to save!\n",
- (rec->min_period_count /
- (rec->hw_buffer_size / 2)));
- else
- rec->min_adds[(rec->min_period_count /
- (rec->hw_buffer_size / 2))]++;
-#endif
- rec->min_period_count = (rec->min_period_count %
- (rec->hw_buffer_size / 2));
- }
- } else if (isplay && iscopy)
- rec->min_periods = 0;
-}
-
-/*
- * helper function for playback/capture pointer callback
- */
-snd_pcm_uframes_t
-snd_pcm_indirect2_pointer(struct snd_pcm_substream *substream,
- struct snd_pcm_indirect2 *rec)
-{
-#ifdef SND_PCM_INDIRECT2_STAT
- rec->pointer_calls++;
-#endif
- return bytes_to_frames(substream->runtime, rec->sw_io);
-}
-
-/*
- * _internal_ helper function for playback interrupt callback
- */
-static void
-snd_pcm_indirect2_playback_transfer(struct snd_pcm_substream *substream,
- struct snd_pcm_indirect2 *rec,
- snd_pcm_indirect2_copy_t copy,
- snd_pcm_indirect2_zero_t zero)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- snd_pcm_uframes_t appl_ptr = runtime->control->appl_ptr;
-
- /* runtime->control->appl_ptr: position where ALSA will write next time
- * rec->appl_ptr: position where ALSA was last time
- * diff: obviously ALSA wrote that much bytes into the intermediate
- * buffer since we checked last time
- */
- snd_pcm_sframes_t diff = appl_ptr - rec->appl_ptr;
-
- if (diff) {
-#ifdef SND_PCM_INDIRECT2_STAT
- rec->lastdifftime = jiffies;
-#endif
- if (diff < -(snd_pcm_sframes_t) (runtime->boundary / 2))
- diff += runtime->boundary;
- /* number of bytes "added" by ALSA increases the number of
- * bytes which are ready to "be transferred to HW"/"played"
- * Then, set rec->appl_ptr to not count bytes twice next time.
- */
- rec->sw_ready += (int)frames_to_bytes(runtime, diff);
- rec->appl_ptr = appl_ptr;
- }
- if (rec->hw_ready && (rec->sw_ready <= 0)) {
- unsigned int bytes;
-
-#ifdef SND_PCM_INDIRECT2_STAT
- if (rec->firstzerotime == 0) {
- rec->firstzerotime = jiffies;
- snd_printk(KERN_DEBUG
- "STAT: @firstzerotime: mul_elapsed: %d, "
- "min_period_count: %d\n",
- rec->mul_elapsed, rec->min_period_count);
- snd_printk(KERN_DEBUG
- "STAT: @firstzerotime: sw_io: %d, "
- "sw_data: %d, appl_ptr: %u\n",
- rec->sw_io, rec->sw_data,
- (unsigned int)appl_ptr);
- }
- if ((jiffies - rec->firstzerotime) < 3750) {
- rec->zero_times[(jiffies - rec->firstzerotime)]++;
- rec->zero_times_saved++;
- } else
- rec->zero_times_notsaved++;
-#endif
- bytes = zero(substream, rec);
-
-#ifdef SND_PCM_INDIRECT2_STAT
- rec->zeros2hw += bytes;
- if (bytes < 64)
- rec->zero_sizes[bytes]++;
- else
- snd_printk(KERN_DEBUG
- "STAT: %d zero Bytes copied to hardware at "
- "once - too big to save!\n",
- bytes);
-#endif
- snd_pcm_indirect2_increase_min_periods(substream, rec, 1, 0,
- bytes);
- return;
- }
- while (rec->hw_ready && (rec->sw_ready > 0)) {
- /* sw_to_end: max. number of bytes that can be read/take from
- * the current position (sw_data) in _one_ step
- */
- unsigned int sw_to_end = rec->sw_buffer_size - rec->sw_data;
-
- /* bytes: number of bytes we have available (for reading) */
- unsigned int bytes = rec->sw_ready;
-
- if (sw_to_end < bytes)
- bytes = sw_to_end;
- if (!bytes)
- break;
-
-#ifdef SND_PCM_INDIRECT2_STAT
- if (rec->firstbytetime == 0)
- rec->firstbytetime = jiffies;
- rec->lastbytetime = jiffies;
-#endif
- /* copy bytes from intermediate buffer position sw_data to the
- * HW and return number of bytes actually written
- * Furthermore, set hw_ready to 0, if the fifo isn't empty
- * now => more could be transferred to fifo
- */
- bytes = copy(substream, rec, bytes);
- rec->bytes2hw += bytes;
-
-#ifdef SND_PCM_INDIRECT2_STAT
- if (bytes < 64)
- rec->byte_sizes[bytes]++;
- else
- snd_printk(KERN_DEBUG
- "STAT: %d Bytes copied to hardware at once "
- "- too big to save!\n",
- bytes);
-#endif
- /* increase sw_data by the number of actually written bytes
- * (= number of taken bytes from intermediate buffer)
- */
- rec->sw_data += bytes;
- if (rec->sw_data == rec->sw_buffer_size)
- rec->sw_data = 0;
- /* now sw_data is the position where ALSA is going to write
- * in the intermediate buffer next time = position we are going
- * to read from next time
- */
-
- snd_pcm_indirect2_increase_min_periods(substream, rec, 1, 1,
- bytes);
-
- /* we read bytes from intermediate buffer, so we need to say
- * that the number of bytes ready for transfer are decreased
- * now
- */
- rec->sw_ready -= bytes;
- }
- return;
-}
-
-/*
- * helper function for playback interrupt routine
- */
-void
-snd_pcm_indirect2_playback_interrupt(struct snd_pcm_substream *substream,
- struct snd_pcm_indirect2 *rec,
- snd_pcm_indirect2_copy_t copy,
- snd_pcm_indirect2_zero_t zero)
-{
-#ifdef SND_PCM_INDIRECT2_STAT
- rec->irq_occured++;
-#endif
- /* hardware played some bytes, so there is room again (in fifo) */
- rec->hw_ready = 1;
-
- /* don't call ack() now, instead call transfer() function directly
- * (normally called by ack() )
- */
- snd_pcm_indirect2_playback_transfer(substream, rec, copy, zero);
-
- if (rec->min_periods >= rec->min_multiple) {
-#ifdef SND_PCM_INDIRECT2_STAT
- if ((rec->min_periods / rec->min_multiple) > 7)
- snd_printk(KERN_DEBUG
- "STAT: more than 7 (%d) mul_adds - too big "
- "to save!\n",
- (rec->min_periods / rec->min_multiple));
- else
- rec->mul_adds[(rec->min_periods /
- rec->min_multiple)]++;
- rec->mul_elapsed_real += (rec->min_periods /
- rec->min_multiple);
- rec->mul_elapsed++;
-#endif
- rec->min_periods = (rec->min_periods % rec->min_multiple);
- snd_pcm_period_elapsed(substream);
- }
-}
-
-/*
- * _internal_ helper function for capture interrupt callback
- */
-static void
-snd_pcm_indirect2_capture_transfer(struct snd_pcm_substream *substream,
- struct snd_pcm_indirect2 *rec,
- snd_pcm_indirect2_copy_t copy,
- snd_pcm_indirect2_zero_t null)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- snd_pcm_uframes_t appl_ptr = runtime->control->appl_ptr;
- snd_pcm_sframes_t diff = appl_ptr - rec->appl_ptr;
-
- if (diff) {
-#ifdef SND_PCM_INDIRECT2_STAT
- rec->lastdifftime = jiffies;
-#endif
- if (diff < -(snd_pcm_sframes_t) (runtime->boundary / 2))
- diff += runtime->boundary;
- rec->sw_ready -= frames_to_bytes(runtime, diff);
- rec->appl_ptr = appl_ptr;
- }
- /* if hardware has something, but the intermediate buffer is full
- * => skip contents of buffer
- */
- if (rec->hw_ready && (rec->sw_ready >= (int)rec->sw_buffer_size)) {
- unsigned int bytes;
-
-#ifdef SND_PCM_INDIRECT2_STAT
- if (rec->firstzerotime == 0) {
- rec->firstzerotime = jiffies;
- snd_printk(KERN_DEBUG "STAT: (capture) "
- "@firstzerotime: mul_elapsed: %d, "
- "min_period_count: %d\n",
- rec->mul_elapsed, rec->min_period_count);
- snd_printk(KERN_DEBUG "STAT: (capture) "
- "@firstzerotime: sw_io: %d, sw_data: %d, "
- "appl_ptr: %u\n",
- rec->sw_io, rec->sw_data,
- (unsigned int)appl_ptr);
- }
- if ((jiffies - rec->firstzerotime) < 3750) {
- rec->zero_times[(jiffies - rec->firstzerotime)]++;
- rec->zero_times_saved++;
- } else
- rec->zero_times_notsaved++;
-#endif
- bytes = null(substream, rec);
-
-#ifdef SND_PCM_INDIRECT2_STAT
- rec->zeros2hw += bytes;
- if (bytes < 64)
- rec->zero_sizes[bytes]++;
- else
- snd_printk(KERN_DEBUG
- "STAT: (capture) %d zero Bytes copied to "
- "hardware at once - too big to save!\n",
- bytes);
-#endif
- snd_pcm_indirect2_increase_min_periods(substream, rec, 0, 0,
- bytes);
- /* report an overrun */
- rec->sw_io = SNDRV_PCM_POS_XRUN;
- return;
- }
- while (rec->hw_ready && (rec->sw_ready < (int)rec->sw_buffer_size)) {
- /* sw_to_end: max. number of bytes that we can write to the
- * intermediate buffer (until it's end)
- */
- size_t sw_to_end = rec->sw_buffer_size - rec->sw_data;
-
- /* bytes: max. number of bytes, which may be copied to the
- * intermediate buffer without overflow (in _one_ step)
- */
- size_t bytes = rec->sw_buffer_size - rec->sw_ready;
-
- /* limit number of bytes (for transfer) by available room in
- * the intermediate buffer
- */
- if (sw_to_end < bytes)
- bytes = sw_to_end;
- if (!bytes)
- break;
-
-#ifdef SND_PCM_INDIRECT2_STAT
- if (rec->firstbytetime == 0)
- rec->firstbytetime = jiffies;
- rec->lastbytetime = jiffies;
-#endif
- /* copy bytes from the intermediate buffer (position sw_data)
- * to the HW at most and return number of bytes actually copied
- * from HW
- * Furthermore, set hw_ready to 0, if the fifo is empty now.
- */
- bytes = copy(substream, rec, bytes);
- rec->bytes2hw += bytes;
-
-#ifdef SND_PCM_INDIRECT2_STAT
- if (bytes < 64)
- rec->byte_sizes[bytes]++;
- else
- snd_printk(KERN_DEBUG
- "STAT: (capture) %d Bytes copied to "
- "hardware at once - too big to save!\n",
- bytes);
-#endif
- /* increase sw_data by the number of actually copied bytes from
- * HW
- */
- rec->sw_data += bytes;
- if (rec->sw_data == rec->sw_buffer_size)
- rec->sw_data = 0;
-
- snd_pcm_indirect2_increase_min_periods(substream, rec, 0, 1,
- bytes);
-
- /* number of bytes in the intermediate buffer, which haven't
- * been fetched by ALSA yet.
- */
- rec->sw_ready += bytes;
- }
- return;
-}
-
-/*
- * helper function for capture interrupt routine
- */
-void
-snd_pcm_indirect2_capture_interrupt(struct snd_pcm_substream *substream,
- struct snd_pcm_indirect2 *rec,
- snd_pcm_indirect2_copy_t copy,
- snd_pcm_indirect2_zero_t null)
-{
-#ifdef SND_PCM_INDIRECT2_STAT
- rec->irq_occured++;
-#endif
- /* hardware recorded some bytes, so there is something to read from the
- * record fifo:
- */
- rec->hw_ready = 1;
-
- /* don't call ack() now, instead call transfer() function directly
- * (normally called by ack() )
- */
- snd_pcm_indirect2_capture_transfer(substream, rec, copy, null);
-
- if (rec->min_periods >= rec->min_multiple) {
-
-#ifdef SND_PCM_INDIRECT2_STAT
- if ((rec->min_periods / rec->min_multiple) > 7)
- snd_printk(KERN_DEBUG
- "STAT: more than 7 (%d) mul_adds - "
- "too big to save!\n",
- (rec->min_periods / rec->min_multiple));
- else
- rec->mul_adds[(rec->min_periods /
- rec->min_multiple)]++;
- rec->mul_elapsed_real += (rec->min_periods /
- rec->min_multiple);
- rec->mul_elapsed++;
-#endif
- rec->min_periods = (rec->min_periods % rec->min_multiple);
- snd_pcm_period_elapsed(substream);
- }
-}
projects / users / hch / configfs.git / commitdiff