diff options
Diffstat (limited to 'kernel/sound/drivers/pcsp')
| -rw-r--r-- | kernel/sound/drivers/pcsp/Makefile | 2 | ||||
| -rw-r--r-- | kernel/sound/drivers/pcsp/pcsp.c | 244 | ||||
| -rw-r--r-- | kernel/sound/drivers/pcsp/pcsp.h | 82 | ||||
| -rw-r--r-- | kernel/sound/drivers/pcsp/pcsp_input.c | 117 | ||||
| -rw-r--r-- | kernel/sound/drivers/pcsp/pcsp_input.h | 14 | ||||
| -rw-r--r-- | kernel/sound/drivers/pcsp/pcsp_lib.c | 359 | ||||
| -rw-r--r-- | kernel/sound/drivers/pcsp/pcsp_mixer.c | 163 |
7 files changed, 981 insertions, 0 deletions
diff --git a/kernel/sound/drivers/pcsp/Makefile b/kernel/sound/drivers/pcsp/Makefile new file mode 100644 index 000000000..b19555b44 --- /dev/null +++ b/kernel/sound/drivers/pcsp/Makefile @@ -0,0 +1,2 @@ +snd-pcsp-objs := pcsp.o pcsp_lib.o pcsp_mixer.o pcsp_input.o +obj-$(CONFIG_SND_PCSP) += snd-pcsp.o diff --git a/kernel/sound/drivers/pcsp/pcsp.c b/kernel/sound/drivers/pcsp/pcsp.c new file mode 100644 index 000000000..d9647bd84 --- /dev/null +++ b/kernel/sound/drivers/pcsp/pcsp.c @@ -0,0 +1,244 @@ +/* + * PC-Speaker driver for Linux + * + * Copyright (C) 1997-2001 David Woodhouse + * Copyright (C) 2001-2008 Stas Sergeev + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <sound/core.h> +#include <sound/initval.h> +#include <sound/pcm.h> +#include <linux/input.h> +#include <linux/delay.h> +#include <linux/bitops.h> +#include "pcsp_input.h" +#include "pcsp.h" + +MODULE_AUTHOR("Stas Sergeev <stsp@users.sourceforge.net>"); +MODULE_DESCRIPTION("PC-Speaker driver"); +MODULE_LICENSE("GPL"); +MODULE_SUPPORTED_DEVICE("{{PC-Speaker, pcsp}}"); +MODULE_ALIAS("platform:pcspkr"); + +static int index = SNDRV_DEFAULT_IDX1; /* Index 0-MAX */ +static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ +static bool enable = SNDRV_DEFAULT_ENABLE1; /* Enable this card */ +static bool nopcm; /* Disable PCM capability of the driver */ + +module_param(index, int, 0444); +MODULE_PARM_DESC(index, "Index value for pcsp soundcard."); +module_param(id, charp, 0444); +MODULE_PARM_DESC(id, "ID string for pcsp soundcard."); +module_param(enable, bool, 0444); +MODULE_PARM_DESC(enable, "Enable PC-Speaker sound."); +module_param(nopcm, bool, 0444); +MODULE_PARM_DESC(nopcm, "Disable PC-Speaker PCM sound. Only beeps remain."); + +struct snd_pcsp pcsp_chip; + +static int snd_pcsp_create(struct snd_card *card) +{ + static struct snd_device_ops ops = { }; + struct timespec tp; + int err; + int div, min_div, order; + + hrtimer_get_res(CLOCK_MONOTONIC, &tp); + + if (!nopcm) { + if (tp.tv_sec || tp.tv_nsec > PCSP_MAX_PERIOD_NS) { + printk(KERN_ERR "PCSP: Timer resolution is not sufficient " + "(%linS)\n", tp.tv_nsec); + printk(KERN_ERR "PCSP: Make sure you have HPET and ACPI " + "enabled.\n"); + printk(KERN_ERR "PCSP: Turned into nopcm mode.\n"); + nopcm = 1; + } + } + + if (loops_per_jiffy >= PCSP_MIN_LPJ && tp.tv_nsec <= PCSP_MIN_PERIOD_NS) + min_div = MIN_DIV; + else + min_div = MAX_DIV; +#if PCSP_DEBUG + printk(KERN_DEBUG "PCSP: lpj=%li, min_div=%i, res=%li\n", + loops_per_jiffy, min_div, tp.tv_nsec); +#endif + + div = MAX_DIV / min_div; + order = fls(div) - 1; + + pcsp_chip.max_treble = min(order, PCSP_MAX_TREBLE); + pcsp_chip.treble = min(pcsp_chip.max_treble, PCSP_DEFAULT_TREBLE); + pcsp_chip.playback_ptr = 0; + pcsp_chip.period_ptr = 0; + atomic_set(&pcsp_chip.timer_active, 0); + pcsp_chip.enable = 1; + pcsp_chip.pcspkr = 1; + + spin_lock_init(&pcsp_chip.substream_lock); + + pcsp_chip.card = card; + pcsp_chip.port = 0x61; + pcsp_chip.irq = -1; + pcsp_chip.dma = -1; + + /* Register device */ + err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, &pcsp_chip, &ops); + if (err < 0) + return err; + + return 0; +} + +static int snd_card_pcsp_probe(int devnum, struct device *dev) +{ + struct snd_card *card; + int err; + + if (devnum != 0) + return -EINVAL; + + hrtimer_init(&pcsp_chip.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + pcsp_chip.timer.function = pcsp_do_timer; + + err = snd_card_new(dev, index, id, THIS_MODULE, 0, &card); + if (err < 0) + return err; + + err = snd_pcsp_create(card); + if (err < 0) { + snd_card_free(card); + return err; + } + if (!nopcm) { + err = snd_pcsp_new_pcm(&pcsp_chip); + if (err < 0) { + snd_card_free(card); + return err; + } + } + err = snd_pcsp_new_mixer(&pcsp_chip, nopcm); + if (err < 0) { + snd_card_free(card); + return err; + } + + strcpy(card->driver, "PC-Speaker"); + strcpy(card->shortname, "pcsp"); + sprintf(card->longname, "Internal PC-Speaker at port 0x%x", + pcsp_chip.port); + + err = snd_card_register(card); + if (err < 0) { + snd_card_free(card); + return err; + } + + return 0; +} + +static int alsa_card_pcsp_init(struct device *dev) +{ + int err; + + err = snd_card_pcsp_probe(0, dev); + if (err) { + printk(KERN_ERR "PC-Speaker initialization failed.\n"); + return err; + } + +#ifdef CONFIG_DEBUG_PAGEALLOC + /* Well, CONFIG_DEBUG_PAGEALLOC makes the sound horrible. Lets alert */ + printk(KERN_WARNING "PCSP: CONFIG_DEBUG_PAGEALLOC is enabled, " + "which may make the sound noisy.\n"); +#endif + + return 0; +} + +static void alsa_card_pcsp_exit(struct snd_pcsp *chip) +{ + snd_card_free(chip->card); +} + +static int pcsp_probe(struct platform_device *dev) +{ + int err; + + err = pcspkr_input_init(&pcsp_chip.input_dev, &dev->dev); + if (err < 0) + return err; + + err = alsa_card_pcsp_init(&dev->dev); + if (err < 0) { + pcspkr_input_remove(pcsp_chip.input_dev); + return err; + } + + platform_set_drvdata(dev, &pcsp_chip); + return 0; +} + +static int pcsp_remove(struct platform_device *dev) +{ + struct snd_pcsp *chip = platform_get_drvdata(dev); + pcspkr_input_remove(chip->input_dev); + alsa_card_pcsp_exit(chip); + return 0; +} + +static void pcsp_stop_beep(struct snd_pcsp *chip) +{ + pcsp_sync_stop(chip); + pcspkr_stop_sound(); +} + +#ifdef CONFIG_PM_SLEEP +static int pcsp_suspend(struct device *dev) +{ + struct snd_pcsp *chip = dev_get_drvdata(dev); + pcsp_stop_beep(chip); + snd_pcm_suspend_all(chip->pcm); + return 0; +} + +static SIMPLE_DEV_PM_OPS(pcsp_pm, pcsp_suspend, NULL); +#define PCSP_PM_OPS &pcsp_pm +#else +#define PCSP_PM_OPS NULL +#endif /* CONFIG_PM_SLEEP */ + +static void pcsp_shutdown(struct platform_device *dev) +{ + struct snd_pcsp *chip = platform_get_drvdata(dev); + pcsp_stop_beep(chip); +} + +static struct platform_driver pcsp_platform_driver = { + .driver = { + .name = "pcspkr", + .pm = PCSP_PM_OPS, + }, + .probe = pcsp_probe, + .remove = pcsp_remove, + .shutdown = pcsp_shutdown, +}; + +static int __init pcsp_init(void) +{ + if (!enable) + return -ENODEV; + return platform_driver_register(&pcsp_platform_driver); +} + +static void __exit pcsp_exit(void) +{ + platform_driver_unregister(&pcsp_platform_driver); +} + +module_init(pcsp_init); +module_exit(pcsp_exit); diff --git a/kernel/sound/drivers/pcsp/pcsp.h b/kernel/sound/drivers/pcsp/pcsp.h new file mode 100644 index 000000000..fc7a2dc41 --- /dev/null +++ b/kernel/sound/drivers/pcsp/pcsp.h @@ -0,0 +1,82 @@ +/* + * PC-Speaker driver for Linux + * + * Copyright (C) 1993-1997 Michael Beck + * Copyright (C) 1997-2001 David Woodhouse + * Copyright (C) 2001-2008 Stas Sergeev + */ + +#ifndef __PCSP_H__ +#define __PCSP_H__ + +#include <linux/hrtimer.h> +#include <linux/i8253.h> +#include <linux/timex.h> + +#define PCSP_SOUND_VERSION 0x400 /* read 4.00 */ +#define PCSP_DEBUG 0 + +/* default timer freq for PC-Speaker: 18643 Hz */ +#define DIV_18KHZ 64 +#define MAX_DIV DIV_18KHZ +#define CALC_DIV(d) (MAX_DIV >> (d)) +#define CUR_DIV() CALC_DIV(chip->treble) +#define PCSP_MAX_TREBLE 1 + +/* unfortunately, with hrtimers 37KHz does not work very well :( */ +#define PCSP_DEFAULT_TREBLE 0 +#define MIN_DIV (MAX_DIV >> PCSP_MAX_TREBLE) + +/* wild guess */ +#define PCSP_MIN_LPJ 1000000 +#define PCSP_DEFAULT_SDIV (DIV_18KHZ >> 1) +#define PCSP_DEFAULT_SRATE (PIT_TICK_RATE / PCSP_DEFAULT_SDIV) +#define PCSP_INDEX_INC() (1 << (PCSP_MAX_TREBLE - chip->treble)) +#define PCSP_CALC_RATE(i) (PIT_TICK_RATE / CALC_DIV(i)) +#define PCSP_RATE() PCSP_CALC_RATE(chip->treble) +#define PCSP_MIN_RATE__1 MAX_DIV/PIT_TICK_RATE +#define PCSP_MAX_RATE__1 MIN_DIV/PIT_TICK_RATE +#define PCSP_MAX_PERIOD_NS (1000000000ULL * PCSP_MIN_RATE__1) +#define PCSP_MIN_PERIOD_NS (1000000000ULL * PCSP_MAX_RATE__1) +#define PCSP_CALC_NS(div) ({ \ + u64 __val = 1000000000ULL * (div); \ + do_div(__val, PIT_TICK_RATE); \ + __val; \ +}) +#define PCSP_PERIOD_NS() PCSP_CALC_NS(CUR_DIV()) + +#define PCSP_MAX_PERIOD_SIZE (64*1024) +#define PCSP_MAX_PERIODS 512 +#define PCSP_BUFFER_SIZE (128*1024) + +struct snd_pcsp { + struct snd_card *card; + struct snd_pcm *pcm; + struct input_dev *input_dev; + struct hrtimer timer; + unsigned short port, irq, dma; + spinlock_t substream_lock; + struct snd_pcm_substream *playback_substream; + unsigned int fmt_size; + unsigned int is_signed; + size_t playback_ptr; + size_t period_ptr; + atomic_t timer_active; + int thalf; + u64 ns_rem; + unsigned char val61; + int enable; + int max_treble; + int treble; + int pcspkr; +}; + +extern struct snd_pcsp pcsp_chip; + +extern enum hrtimer_restart pcsp_do_timer(struct hrtimer *handle); +extern void pcsp_sync_stop(struct snd_pcsp *chip); + +extern int snd_pcsp_new_pcm(struct snd_pcsp *chip); +extern int snd_pcsp_new_mixer(struct snd_pcsp *chip, int nopcm); + +#endif diff --git a/kernel/sound/drivers/pcsp/pcsp_input.c b/kernel/sound/drivers/pcsp/pcsp_input.c new file mode 100644 index 000000000..bfc258119 --- /dev/null +++ b/kernel/sound/drivers/pcsp/pcsp_input.c @@ -0,0 +1,117 @@ +/* + * PC Speaker beeper driver for Linux + * + * Copyright (c) 2002 Vojtech Pavlik + * Copyright (c) 1992 Orest Zborowski + * + */ + +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation + */ + +#include <linux/init.h> +#include <linux/input.h> +#include <linux/io.h> +#include "pcsp.h" +#include "pcsp_input.h" + +static void pcspkr_do_sound(unsigned int count) +{ + unsigned long flags; + + raw_spin_lock_irqsave(&i8253_lock, flags); + + if (count) { + /* set command for counter 2, 2 byte write */ + outb_p(0xB6, 0x43); + /* select desired HZ */ + outb_p(count & 0xff, 0x42); + outb((count >> 8) & 0xff, 0x42); + /* enable counter 2 */ + outb_p(inb_p(0x61) | 3, 0x61); + } else { + /* disable counter 2 */ + outb(inb_p(0x61) & 0xFC, 0x61); + } + + raw_spin_unlock_irqrestore(&i8253_lock, flags); +} + +void pcspkr_stop_sound(void) +{ + pcspkr_do_sound(0); +} + +static int pcspkr_input_event(struct input_dev *dev, unsigned int type, + unsigned int code, int value) +{ + unsigned int count = 0; + + if (atomic_read(&pcsp_chip.timer_active) || !pcsp_chip.pcspkr) + return 0; + + switch (type) { + case EV_SND: + switch (code) { + case SND_BELL: + if (value) + value = 1000; + case SND_TONE: + break; + default: + return -1; + } + break; + + default: + return -1; + } + + if (value > 20 && value < 32767) + count = PIT_TICK_RATE / value; + + pcspkr_do_sound(count); + + return 0; +} + +int pcspkr_input_init(struct input_dev **rdev, struct device *dev) +{ + int err; + + struct input_dev *input_dev = input_allocate_device(); + if (!input_dev) + return -ENOMEM; + + input_dev->name = "PC Speaker"; + input_dev->phys = "isa0061/input0"; + input_dev->id.bustype = BUS_ISA; + input_dev->id.vendor = 0x001f; + input_dev->id.product = 0x0001; + input_dev->id.version = 0x0100; + input_dev->dev.parent = dev; + + input_dev->evbit[0] = BIT(EV_SND); + input_dev->sndbit[0] = BIT(SND_BELL) | BIT(SND_TONE); + input_dev->event = pcspkr_input_event; + + err = input_register_device(input_dev); + if (err) { + input_free_device(input_dev); + return err; + } + + *rdev = input_dev; + return 0; +} + +int pcspkr_input_remove(struct input_dev *dev) +{ + pcspkr_stop_sound(); + input_unregister_device(dev); /* this also does kfree() */ + + return 0; +} diff --git a/kernel/sound/drivers/pcsp/pcsp_input.h b/kernel/sound/drivers/pcsp/pcsp_input.h new file mode 100644 index 000000000..d692749b8 --- /dev/null +++ b/kernel/sound/drivers/pcsp/pcsp_input.h @@ -0,0 +1,14 @@ +/* + * PC-Speaker driver for Linux + * + * Copyright (C) 2001-2008 Stas Sergeev + */ + +#ifndef __PCSP_INPUT_H__ +#define __PCSP_INPUT_H__ + +int pcspkr_input_init(struct input_dev **rdev, struct device *dev); +int pcspkr_input_remove(struct input_dev *dev); +void pcspkr_stop_sound(void); + +#endif diff --git a/kernel/sound/drivers/pcsp/pcsp_lib.c b/kernel/sound/drivers/pcsp/pcsp_lib.c new file mode 100644 index 000000000..3689f5f6b --- /dev/null +++ b/kernel/sound/drivers/pcsp/pcsp_lib.c @@ -0,0 +1,359 @@ +/* + * PC-Speaker driver for Linux + * + * Copyright (C) 1993-1997 Michael Beck + * Copyright (C) 1997-2001 David Woodhouse + * Copyright (C) 2001-2008 Stas Sergeev + */ + +#include <linux/module.h> +#include <linux/gfp.h> +#include <linux/moduleparam.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <sound/pcm.h> +#include "pcsp.h" + +static bool nforce_wa; +module_param(nforce_wa, bool, 0444); +MODULE_PARM_DESC(nforce_wa, "Apply NForce chipset workaround " + "(expect bad sound)"); + +#define DMIX_WANTS_S16 1 + +/* + * Call snd_pcm_period_elapsed in a tasklet + * This avoids spinlock messes and long-running irq contexts + */ +static void pcsp_call_pcm_elapsed(unsigned long priv) +{ + if (atomic_read(&pcsp_chip.timer_active)) { + struct snd_pcm_substream *substream; + substream = pcsp_chip.playback_substream; + if (substream) + snd_pcm_period_elapsed(substream); + } +} + +static DECLARE_TASKLET(pcsp_pcm_tasklet, pcsp_call_pcm_elapsed, 0); + +/* write the port and returns the next expire time in ns; + * called at the trigger-start and in hrtimer callback + */ +static u64 pcsp_timer_update(struct snd_pcsp *chip) +{ + unsigned char timer_cnt, val; + u64 ns; + struct snd_pcm_substream *substream; + struct snd_pcm_runtime *runtime; + unsigned long flags; + + if (chip->thalf) { + outb(chip->val61, 0x61); + chip->thalf = 0; + return chip->ns_rem; + } + + substream = chip->playback_substream; + if (!substream) + return 0; + + runtime = substream->runtime; + /* assume it is mono! */ + val = runtime->dma_area[chip->playback_ptr + chip->fmt_size - 1]; + if (chip->is_signed) + val ^= 0x80; + timer_cnt = val * CUR_DIV() / 256; + + if (timer_cnt && chip->enable) { + raw_spin_lock_irqsave(&i8253_lock, flags); + if (!nforce_wa) { + outb_p(chip->val61, 0x61); + outb_p(timer_cnt, 0x42); + outb(chip->val61 ^ 1, 0x61); + } else { + outb(chip->val61 ^ 2, 0x61); + chip->thalf = 1; + } + raw_spin_unlock_irqrestore(&i8253_lock, flags); + } + + chip->ns_rem = PCSP_PERIOD_NS(); + ns = (chip->thalf ? PCSP_CALC_NS(timer_cnt) : chip->ns_rem); + chip->ns_rem -= ns; + return ns; +} + +static void pcsp_pointer_update(struct snd_pcsp *chip) +{ + struct snd_pcm_substream *substream; + size_t period_bytes, buffer_bytes; + int periods_elapsed; + unsigned long flags; + + /* update the playback position */ + substream = chip->playback_substream; + if (!substream) + return; + + period_bytes = snd_pcm_lib_period_bytes(substream); + buffer_bytes = snd_pcm_lib_buffer_bytes(substream); + + spin_lock_irqsave(&chip->substream_lock, flags); + chip->playback_ptr += PCSP_INDEX_INC() * chip->fmt_size; + periods_elapsed = chip->playback_ptr - chip->period_ptr; + if (periods_elapsed < 0) { +#if PCSP_DEBUG + printk(KERN_INFO "PCSP: buffer_bytes mod period_bytes != 0 ? " + "(%zi %zi %zi)\n", + chip->playback_ptr, period_bytes, buffer_bytes); +#endif + periods_elapsed += buffer_bytes; + } + periods_elapsed /= period_bytes; + /* wrap the pointer _before_ calling snd_pcm_period_elapsed(), + * or ALSA will BUG on us. */ + chip->playback_ptr %= buffer_bytes; + + if (periods_elapsed) { + chip->period_ptr += periods_elapsed * period_bytes; + chip->period_ptr %= buffer_bytes; + } + spin_unlock_irqrestore(&chip->substream_lock, flags); + + if (periods_elapsed) + tasklet_schedule(&pcsp_pcm_tasklet); +} + +enum hrtimer_restart pcsp_do_timer(struct hrtimer *handle) +{ + struct snd_pcsp *chip = container_of(handle, struct snd_pcsp, timer); + int pointer_update; + u64 ns; + + if (!atomic_read(&chip->timer_active) || !chip->playback_substream) + return HRTIMER_NORESTART; + + pointer_update = !chip->thalf; + ns = pcsp_timer_update(chip); + if (!ns) { + printk(KERN_WARNING "PCSP: unexpected stop\n"); + return HRTIMER_NORESTART; + } + + if (pointer_update) + pcsp_pointer_update(chip); + + hrtimer_forward(handle, hrtimer_get_expires(handle), ns_to_ktime(ns)); + + return HRTIMER_RESTART; +} + +static int pcsp_start_playing(struct snd_pcsp *chip) +{ +#if PCSP_DEBUG + printk(KERN_INFO "PCSP: start_playing called\n"); +#endif + if (atomic_read(&chip->timer_active)) { + printk(KERN_ERR "PCSP: Timer already active\n"); + return -EIO; + } + + raw_spin_lock(&i8253_lock); + chip->val61 = inb(0x61) | 0x03; + outb_p(0x92, 0x43); /* binary, mode 1, LSB only, ch 2 */ + raw_spin_unlock(&i8253_lock); + atomic_set(&chip->timer_active, 1); + chip->thalf = 0; + + hrtimer_start(&pcsp_chip.timer, ktime_set(0, 0), HRTIMER_MODE_REL); + return 0; +} + +static void pcsp_stop_playing(struct snd_pcsp *chip) +{ +#if PCSP_DEBUG + printk(KERN_INFO "PCSP: stop_playing called\n"); +#endif + if (!atomic_read(&chip->timer_active)) + return; + + atomic_set(&chip->timer_active, 0); + raw_spin_lock(&i8253_lock); + /* restore the timer */ + outb_p(0xb6, 0x43); /* binary, mode 3, LSB/MSB, ch 2 */ + outb(chip->val61 & 0xFC, 0x61); + raw_spin_unlock(&i8253_lock); +} + +/* + * Force to stop and sync the stream + */ +void pcsp_sync_stop(struct snd_pcsp *chip) +{ + local_irq_disable(); + pcsp_stop_playing(chip); + local_irq_enable(); + hrtimer_cancel(&chip->timer); + tasklet_kill(&pcsp_pcm_tasklet); +} + +static int snd_pcsp_playback_close(struct snd_pcm_substream *substream) +{ + struct snd_pcsp *chip = snd_pcm_substream_chip(substream); +#if PCSP_DEBUG + printk(KERN_INFO "PCSP: close called\n"); +#endif + pcsp_sync_stop(chip); + chip->playback_substream = NULL; + return 0; +} + +static int snd_pcsp_playback_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + struct snd_pcsp *chip = snd_pcm_substream_chip(substream); + int err; + pcsp_sync_stop(chip); + err = snd_pcm_lib_malloc_pages(substream, + params_buffer_bytes(hw_params)); + if (err < 0) + return err; + return 0; +} + +static int snd_pcsp_playback_hw_free(struct snd_pcm_substream *substream) +{ + struct snd_pcsp *chip = snd_pcm_substream_chip(substream); +#if PCSP_DEBUG + printk(KERN_INFO "PCSP: hw_free called\n"); +#endif + pcsp_sync_stop(chip); + return snd_pcm_lib_free_pages(substream); +} + +static int snd_pcsp_playback_prepare(struct snd_pcm_substream *substream) +{ + struct snd_pcsp *chip = snd_pcm_substream_chip(substream); + pcsp_sync_stop(chip); + chip->playback_ptr = 0; + chip->period_ptr = 0; + chip->fmt_size = + snd_pcm_format_physical_width(substream->runtime->format) >> 3; + chip->is_signed = snd_pcm_format_signed(substream->runtime->format); +#if PCSP_DEBUG + printk(KERN_INFO "PCSP: prepare called, " + "size=%zi psize=%zi f=%zi f1=%i fsize=%i\n", + snd_pcm_lib_buffer_bytes(substream), + snd_pcm_lib_period_bytes(substream), + snd_pcm_lib_buffer_bytes(substream) / + snd_pcm_lib_period_bytes(substream), + substream->runtime->periods, + chip->fmt_size); +#endif + return 0; +} + +static int snd_pcsp_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct snd_pcsp *chip = snd_pcm_substream_chip(substream); +#if PCSP_DEBUG + printk(KERN_INFO "PCSP: trigger called\n"); +#endif + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + return pcsp_start_playing(chip); + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + pcsp_stop_playing(chip); + break; + default: + return -EINVAL; + } + return 0; +} + +static snd_pcm_uframes_t snd_pcsp_playback_pointer(struct snd_pcm_substream + *substream) +{ + struct snd_pcsp *chip = snd_pcm_substream_chip(substream); + unsigned int pos; + spin_lock(&chip->substream_lock); + pos = chip->playback_ptr; + spin_unlock(&chip->substream_lock); + return bytes_to_frames(substream->runtime, pos); +} + +static struct snd_pcm_hardware snd_pcsp_playback = { + .info = (SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_HALF_DUPLEX | + SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID), + .formats = (SNDRV_PCM_FMTBIT_U8 +#if DMIX_WANTS_S16 + | SNDRV_PCM_FMTBIT_S16_LE +#endif + ), + .rates = SNDRV_PCM_RATE_KNOT, + .rate_min = PCSP_DEFAULT_SRATE, + .rate_max = PCSP_DEFAULT_SRATE, + .channels_min = 1, + .channels_max = 1, + .buffer_bytes_max = PCSP_BUFFER_SIZE, + .period_bytes_min = 64, + .period_bytes_max = PCSP_MAX_PERIOD_SIZE, + .periods_min = 2, + .periods_max = PCSP_MAX_PERIODS, + .fifo_size = 0, +}; + +static int snd_pcsp_playback_open(struct snd_pcm_substream *substream) +{ + struct snd_pcsp *chip = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; +#if PCSP_DEBUG + printk(KERN_INFO "PCSP: open called\n"); +#endif + if (atomic_read(&chip->timer_active)) { + printk(KERN_ERR "PCSP: still active!!\n"); + return -EBUSY; + } + runtime->hw = snd_pcsp_playback; + chip->playback_substream = substream; + return 0; +} + +static struct snd_pcm_ops snd_pcsp_playback_ops = { + .open = snd_pcsp_playback_open, + .close = snd_pcsp_playback_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = snd_pcsp_playback_hw_params, + .hw_free = snd_pcsp_playback_hw_free, + .prepare = snd_pcsp_playback_prepare, + .trigger = snd_pcsp_trigger, + .pointer = snd_pcsp_playback_pointer, +}; + +int snd_pcsp_new_pcm(struct snd_pcsp *chip) +{ + int err; + + err = snd_pcm_new(chip->card, "pcspeaker", 0, 1, 0, &chip->pcm); + if (err < 0) + return err; + + snd_pcm_set_ops(chip->pcm, SNDRV_PCM_STREAM_PLAYBACK, + &snd_pcsp_playback_ops); + + chip->pcm->private_data = chip; + chip->pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX; + strcpy(chip->pcm->name, "pcsp"); + + snd_pcm_lib_preallocate_pages_for_all(chip->pcm, + SNDRV_DMA_TYPE_CONTINUOUS, + snd_dma_continuous_data + (GFP_KERNEL), PCSP_BUFFER_SIZE, + PCSP_BUFFER_SIZE); + + return 0; +} diff --git a/kernel/sound/drivers/pcsp/pcsp_mixer.c b/kernel/sound/drivers/pcsp/pcsp_mixer.c new file mode 100644 index 000000000..f1e1defc0 --- /dev/null +++ b/kernel/sound/drivers/pcsp/pcsp_mixer.c @@ -0,0 +1,163 @@ +/* + * PC-Speaker driver for Linux + * + * Mixer implementation. + * Copyright (C) 2001-2008 Stas Sergeev + */ + +#include <sound/core.h> +#include <sound/control.h> +#include "pcsp.h" + + +static int pcsp_enable_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; + uinfo->count = 1; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = 1; + return 0; +} + +static int pcsp_enable_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol); + ucontrol->value.integer.value[0] = chip->enable; + return 0; +} + +static int pcsp_enable_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol); + int changed = 0; + int enab = ucontrol->value.integer.value[0]; + if (enab != chip->enable) { + chip->enable = enab; + changed = 1; + } + return changed; +} + +static int pcsp_treble_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol); + uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; + uinfo->count = 1; + uinfo->value.enumerated.items = chip->max_treble + 1; + if (uinfo->value.enumerated.item > chip->max_treble) + uinfo->value.enumerated.item = chip->max_treble; + sprintf(uinfo->value.enumerated.name, "%lu", + (unsigned long)PCSP_CALC_RATE(uinfo->value.enumerated.item)); + return 0; +} + +static int pcsp_treble_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol); + ucontrol->value.enumerated.item[0] = chip->treble; + return 0; +} + +static int pcsp_treble_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol); + int changed = 0; + int treble = ucontrol->value.enumerated.item[0]; + if (treble != chip->treble) { + chip->treble = treble; +#if PCSP_DEBUG + printk(KERN_INFO "PCSP: rate set to %li\n", PCSP_RATE()); +#endif + changed = 1; + } + return changed; +} + +static int pcsp_pcspkr_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; + uinfo->count = 1; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = 1; + return 0; +} + +static int pcsp_pcspkr_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol); + ucontrol->value.integer.value[0] = chip->pcspkr; + return 0; +} + +static int pcsp_pcspkr_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_pcsp *chip = snd_kcontrol_chip(kcontrol); + int changed = 0; + int spkr = ucontrol->value.integer.value[0]; + if (spkr != chip->pcspkr) { + chip->pcspkr = spkr; + changed = 1; + } + return changed; +} + +#define PCSP_MIXER_CONTROL(ctl_type, ctl_name) \ +{ \ + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ + .name = ctl_name, \ + .info = pcsp_##ctl_type##_info, \ + .get = pcsp_##ctl_type##_get, \ + .put = pcsp_##ctl_type##_put, \ +} + +static struct snd_kcontrol_new snd_pcsp_controls_pcm[] = { + PCSP_MIXER_CONTROL(enable, "Master Playback Switch"), + PCSP_MIXER_CONTROL(treble, "BaseFRQ Playback Volume"), +}; + +static struct snd_kcontrol_new snd_pcsp_controls_spkr[] = { + PCSP_MIXER_CONTROL(pcspkr, "Beep Playback Switch"), +}; + +static int snd_pcsp_ctls_add(struct snd_pcsp *chip, + struct snd_kcontrol_new *ctls, int num) +{ + int i, err; + struct snd_card *card = chip->card; + for (i = 0; i < num; i++) { + err = snd_ctl_add(card, snd_ctl_new1(ctls + i, chip)); + if (err < 0) + return err; + } + return 0; +} + +int snd_pcsp_new_mixer(struct snd_pcsp *chip, int nopcm) +{ + int err; + struct snd_card *card = chip->card; + + if (!nopcm) { + err = snd_pcsp_ctls_add(chip, snd_pcsp_controls_pcm, + ARRAY_SIZE(snd_pcsp_controls_pcm)); + if (err < 0) + return err; + } + err = snd_pcsp_ctls_add(chip, snd_pcsp_controls_spkr, + ARRAY_SIZE(snd_pcsp_controls_spkr)); + if (err < 0) + return err; + + strcpy(card->mixername, "PC-Speaker"); + + return 0; +} |