| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Joachim Foerster | 5831 | 99.25% | 2 | 13.33% |
| Kay Sievers | 15 | 0.26% | 2 | 13.33% |
| Takashi Iwai | 14 | 0.24% | 2 | 13.33% |
| Tejun Heo | 3 | 0.05% | 1 | 6.67% |
| Bhumika Goyal | 2 | 0.03% | 1 | 6.67% |
| Joe Perches | 2 | 0.03% | 1 | 6.67% |
| Yong Zhang | 2 | 0.03% | 1 | 6.67% |
| Arvind Yadav | 2 | 0.03% | 1 | 6.67% |
| Bill Pemberton | 1 | 0.02% | 1 | 6.67% |
| Paul Gortmaker | 1 | 0.02% | 1 | 6.67% |
| Rusty Russell | 1 | 0.02% | 1 | 6.67% |
| Axel Lin | 1 | 0.02% | 1 | 6.67% |
| Total | 5875 | 15 |
/* * 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> * * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ /* 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_hw_free(struct snd_pcm_substream *substream) { PDEBUG(WORK_INFO, "hw_free()\n"); return snd_pcm_lib_free_pages(substream); } static int snd_ml403_ac97cr_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *hw_params) { PDEBUG(WORK_INFO, "hw_params(): desired buffer bytes=%d, desired " "period bytes=%d\n", params_buffer_bytes(hw_params), params_period_bytes(hw_params)); return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); } 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, .ioctl = snd_pcm_lib_ioctl, .hw_params = snd_ml403_ac97cr_hw_params, .hw_free = snd_ml403_ac97cr_hw_free, .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, .ioctl = snd_pcm_lib_ioctl, .hw_params = snd_ml403_ac97cr_hw_params, .hw_free = snd_ml403_ac97cr_hw_free, .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 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_nocache(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 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_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, snd_dma_continuous_data(GFP_KERNEL), 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);
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