// SPDX-License-Identifier: GPL-2.0-or-later /* * als300.c - driver for Avance Logic ALS300/ALS300+ soundcards. * Copyright (C) 2005 by Ash Willis <[email protected]> * * TODO * 4 channel playback for ALS300+ * gameport * mpu401 * opl3 * * NOTES * The BLOCK_COUNTER registers for the ALS300(+) return a figure related to * the position in the current period, NOT the whole buffer. It is important * to know which period we are in so we can calculate the correct pointer. * This is why we always use 2 periods. We can then use a flip-flop variable * to keep track of what period we are in. */ #include <linux/delay.h> #include <linux/init.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/dma-mapping.h> #include <linux/interrupt.h> #include <linux/slab.h> #include <linux/io.h> #include <sound/core.h> #include <sound/control.h> #include <sound/initval.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/ac97_codec.h> #include <sound/opl3.h> /* snd_als300_set_irq_flag */ #define IRQ_DISABLE … #define IRQ_ENABLE … /* I/O port layout */ #define AC97_ACCESS … #define AC97_READ … #define AC97_STATUS … #define AC97_DATA_AVAIL … #define AC97_BUSY … #define ALS300_IRQ_STATUS … #define IRQ_PLAYBACK … #define IRQ_CAPTURE … #define GCR_DATA … #define GCR_INDEX … #define ALS300P_DRAM_IRQ_STATUS … #define MPU_IRQ_STATUS … #define ALS300P_IRQ_STATUS … /* General Control Registers */ #define PLAYBACK_START … #define PLAYBACK_END … #define PLAYBACK_CONTROL … #define TRANSFER_START … #define FIFO_PAUSE … #define RECORD_START … #define RECORD_END … #define RECORD_CONTROL … #define DRAM_WRITE_CONTROL … #define WRITE_TRANS_START … #define DRAM_MODE_2 … #define MISC_CONTROL … #define IRQ_SET_BIT … #define VMUTE_NORMAL … #define MMUTE_NORMAL … #define MUS_VOC_VOL … #define PLAYBACK_BLOCK_COUNTER … #define RECORD_BLOCK_COUNTER … #define DEBUG_PLAY_REC … #if DEBUG_PLAY_REC #define snd_als300_dbgplay … #else #define snd_als300_dbgplay(format, args...) … #endif enum { … }; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; static int index[SNDRV_CARDS] = …; static char *id[SNDRV_CARDS] = …; static bool enable[SNDRV_CARDS] = …; module_param_array(…); MODULE_PARM_DESC(…) …; module_param_array(…); MODULE_PARM_DESC(…) …; module_param_array(…); MODULE_PARM_DESC(…) …; struct snd_als300 { … }; struct snd_als300_substream_data { … }; static const struct pci_device_id snd_als300_ids[] = …; MODULE_DEVICE_TABLE(pci, snd_als300_ids); static inline u32 snd_als300_gcr_read(unsigned long port, unsigned short reg) { … } static inline void snd_als300_gcr_write(unsigned long port, unsigned short reg, u32 val) { … } /* Enable/Disable Interrupts */ static void snd_als300_set_irq_flag(struct snd_als300 *chip, int cmd) { … } static void snd_als300_free(struct snd_card *card) { … } static irqreturn_t snd_als300_interrupt(int irq, void *dev_id) { … } static irqreturn_t snd_als300plus_interrupt(int irq, void *dev_id) { … } static unsigned short snd_als300_ac97_read(struct snd_ac97 *ac97, unsigned short reg) { … } static void snd_als300_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short val) { … } static int snd_als300_ac97(struct snd_als300 *chip) { … } /* hardware definition * * In AC97 mode, we always use 48k/16bit/stereo. * Any request to change data type is ignored by * the card when it is running outside of legacy * mode. */ static const struct snd_pcm_hardware snd_als300_playback_hw = …; static const struct snd_pcm_hardware snd_als300_capture_hw = …; static int snd_als300_playback_open(struct snd_pcm_substream *substream) { … } static int snd_als300_playback_close(struct snd_pcm_substream *substream) { … } static int snd_als300_capture_open(struct snd_pcm_substream *substream) { … } static int snd_als300_capture_close(struct snd_pcm_substream *substream) { … } static int snd_als300_playback_prepare(struct snd_pcm_substream *substream) { … } static int snd_als300_capture_prepare(struct snd_pcm_substream *substream) { … } static int snd_als300_trigger(struct snd_pcm_substream *substream, int cmd) { … } static snd_pcm_uframes_t snd_als300_pointer(struct snd_pcm_substream *substream) { … } static const struct snd_pcm_ops snd_als300_playback_ops = …; static const struct snd_pcm_ops snd_als300_capture_ops = …; static int snd_als300_new_pcm(struct snd_als300 *chip) { … } static void snd_als300_init(struct snd_als300 *chip) { … } static int snd_als300_create(struct snd_card *card, struct pci_dev *pci, int chip_type) { … } static int snd_als300_suspend(struct device *dev) { … } static int snd_als300_resume(struct device *dev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(snd_als300_pm, snd_als300_suspend, snd_als300_resume); static int snd_als300_probe(struct pci_dev *pci, const struct pci_device_id *pci_id) { … } static struct pci_driver als300_driver = …; module_pci_driver(…) …;
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