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Diffstat (limited to 'sound/oss/sh_dac_audio.c')
-rw-r--r--sound/oss/sh_dac_audio.c331
1 files changed, 0 insertions, 331 deletions
diff --git a/sound/oss/sh_dac_audio.c b/sound/oss/sh_dac_audio.c
deleted file mode 100644
index 83ff8a71f71..00000000000
--- a/sound/oss/sh_dac_audio.c
+++ /dev/null
@@ -1,331 +0,0 @@
-/*
- * sound/oss/sh_dac_audio.c
- *
- * SH DAC based sound :(
- *
- * Copyright (C) 2004,2005 Andriy Skulysh
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/linkage.h>
-#include <linux/slab.h>
-#include <linux/fs.h>
-#include <linux/sound.h>
-#include <linux/soundcard.h>
-#include <linux/interrupt.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm/irq.h>
-#include <asm/delay.h>
-#include <asm/clock.h>
-#include <asm/cpu/dac.h>
-#include <asm/cpu/timer.h>
-#include <asm/machvec.h>
-#include <asm/hp6xx/hp6xx.h>
-#include <asm/hd64461.h>
-
-#define MODNAME "sh_dac_audio"
-
-#define TMU_TOCR_INIT 0x00
-
-#define TMU1_TCR_INIT 0x0020 /* Clock/4, rising edge; interrupt on */
-#define TMU1_TSTR_INIT 0x02 /* Bit to turn on TMU1 */
-
-#define BUFFER_SIZE 48000
-
-static int rate;
-static int empty;
-static char *data_buffer, *buffer_begin, *buffer_end;
-static int in_use, device_major;
-
-static void dac_audio_start_timer(void)
-{
- u8 tstr;
-
- tstr = ctrl_inb(TMU_TSTR);
- tstr |= TMU1_TSTR_INIT;
- ctrl_outb(tstr, TMU_TSTR);
-}
-
-static void dac_audio_stop_timer(void)
-{
- u8 tstr;
-
- tstr = ctrl_inb(TMU_TSTR);
- tstr &= ~TMU1_TSTR_INIT;
- ctrl_outb(tstr, TMU_TSTR);
-}
-
-static void dac_audio_reset(void)
-{
- dac_audio_stop_timer();
- buffer_begin = buffer_end = data_buffer;
- empty = 1;
-}
-
-static void dac_audio_sync(void)
-{
- while (!empty)
- schedule();
-}
-
-static void dac_audio_start(void)
-{
- if (mach_is_hp6xx()) {
- u16 v = inw(HD64461_GPADR);
- v &= ~HD64461_GPADR_SPEAKER;
- outw(v, HD64461_GPADR);
- }
-
- sh_dac_enable(CONFIG_SOUND_SH_DAC_AUDIO_CHANNEL);
- ctrl_outw(TMU1_TCR_INIT, TMU1_TCR);
-}
-static void dac_audio_stop(void)
-{
- dac_audio_stop_timer();
-
- if (mach_is_hp6xx()) {
- u16 v = inw(HD64461_GPADR);
- v |= HD64461_GPADR_SPEAKER;
- outw(v, HD64461_GPADR);
- }
-
- sh_dac_output(0, CONFIG_SOUND_SH_DAC_AUDIO_CHANNEL);
- sh_dac_disable(CONFIG_SOUND_SH_DAC_AUDIO_CHANNEL);
-}
-
-static void dac_audio_set_rate(void)
-{
- unsigned long interval;
- struct clk *clk;
-
- clk = clk_get("module_clk");
- interval = (clk_get_rate(clk) / 4) / rate;
- clk_put(clk);
- ctrl_outl(interval, TMU1_TCOR);
- ctrl_outl(interval, TMU1_TCNT);
-}
-
-static int dac_audio_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- int val;
-
- switch (cmd) {
- case OSS_GETVERSION:
- return put_user(SOUND_VERSION, (int *)arg);
-
- case SNDCTL_DSP_SYNC:
- dac_audio_sync();
- return 0;
-
- case SNDCTL_DSP_RESET:
- dac_audio_reset();
- return 0;
-
- case SNDCTL_DSP_GETFMTS:
- return put_user(AFMT_U8, (int *)arg);
-
- case SNDCTL_DSP_SETFMT:
- return put_user(AFMT_U8, (int *)arg);
-
- case SNDCTL_DSP_NONBLOCK:
- file->f_flags |= O_NONBLOCK;
- return 0;
-
- case SNDCTL_DSP_GETCAPS:
- return 0;
-
- case SOUND_PCM_WRITE_RATE:
- val = *(int *)arg;
- if (val > 0) {
- rate = val;
- dac_audio_set_rate();
- }
- return put_user(rate, (int *)arg);
-
- case SNDCTL_DSP_STEREO:
- return put_user(0, (int *)arg);
-
- case SOUND_PCM_WRITE_CHANNELS:
- return put_user(1, (int *)arg);
-
- case SNDCTL_DSP_SETDUPLEX:
- return -EINVAL;
-
- case SNDCTL_DSP_PROFILE:
- return -EINVAL;
-
- case SNDCTL_DSP_GETBLKSIZE:
- return put_user(BUFFER_SIZE, (int *)arg);
-
- case SNDCTL_DSP_SETFRAGMENT:
- return 0;
-
- default:
- printk(KERN_ERR "sh_dac_audio: unimplemented ioctl=0x%x\n",
- cmd);
- return -EINVAL;
- }
- return -EINVAL;
-}
-
-static ssize_t dac_audio_write(struct file *file, const char *buf, size_t count,
- loff_t * ppos)
-{
- int free;
- int nbytes;
-
- if (count < 0)
- return -EINVAL;
-
- if (!count) {
- dac_audio_sync();
- return 0;
- }
-
- free = buffer_begin - buffer_end;
-
- if (free < 0)
- free += BUFFER_SIZE;
- if ((free == 0) && (empty))
- free = BUFFER_SIZE;
- if (count > free)
- count = free;
- if (buffer_begin > buffer_end) {
- if (copy_from_user((void *)buffer_end, buf, count))
- return -EFAULT;
-
- buffer_end += count;
- } else {
- nbytes = data_buffer + BUFFER_SIZE - buffer_end;
- if (nbytes > count) {
- if (copy_from_user((void *)buffer_end, buf, count))
- return -EFAULT;
- buffer_end += count;
- } else {
- if (copy_from_user((void *)buffer_end, buf, nbytes))
- return -EFAULT;
- if (copy_from_user
- ((void *)data_buffer, buf + nbytes, count - nbytes))
- return -EFAULT;
- buffer_end = data_buffer + count - nbytes;
- }
- }
-
- if (empty) {
- empty = 0;
- dac_audio_start_timer();
- }
-
- return count;
-}
-
-static ssize_t dac_audio_read(struct file *file, char *buf, size_t count,
- loff_t * ppos)
-{
- return -EINVAL;
-}
-
-static int dac_audio_open(struct inode *inode, struct file *file)
-{
- if (file->f_mode & FMODE_READ)
- return -ENODEV;
- if (in_use)
- return -EBUSY;
-
- in_use = 1;
-
- dac_audio_start();
-
- return 0;
-}
-
-static int dac_audio_release(struct inode *inode, struct file *file)
-{
- dac_audio_sync();
- dac_audio_stop();
- in_use = 0;
-
- return 0;
-}
-
-struct file_operations dac_audio_fops = {
- .read = dac_audio_read,
- .write = dac_audio_write,
- .ioctl = dac_audio_ioctl,
- .open = dac_audio_open,
- .release = dac_audio_release,
-};
-
-static irqreturn_t timer1_interrupt(int irq, void *dev, struct pt_regs *regs)
-{
- unsigned long timer_status;
-
- timer_status = ctrl_inw(TMU1_TCR);
- timer_status &= ~0x100;
- ctrl_outw(timer_status, TMU1_TCR);
-
- if (!empty) {
- sh_dac_output(*buffer_begin, CONFIG_SOUND_SH_DAC_AUDIO_CHANNEL);
- buffer_begin++;
-
- if (buffer_begin == data_buffer + BUFFER_SIZE)
- buffer_begin = data_buffer;
- if (buffer_begin == buffer_end) {
- empty = 1;
- dac_audio_stop_timer();
- }
- }
- return IRQ_HANDLED;
-}
-
-static int __init dac_audio_init(void)
-{
- int retval;
-
- if ((device_major = register_sound_dsp(&dac_audio_fops, -1)) < 0) {
- printk(KERN_ERR "Cannot register dsp device");
- return device_major;
- }
-
- in_use = 0;
-
- data_buffer = kmalloc(BUFFER_SIZE, GFP_KERNEL);
- if (data_buffer == NULL)
- return -ENOMEM;
-
- dac_audio_reset();
- rate = 8000;
- dac_audio_set_rate();
-
- retval =
- request_irq(TIMER1_IRQ, timer1_interrupt, IRQF_DISABLED, MODNAME, 0);
- if (retval < 0) {
- printk(KERN_ERR "sh_dac_audio: IRQ %d request failed\n",
- TIMER1_IRQ);
- return retval;
- }
-
- return 0;
-}
-
-static void __exit dac_audio_exit(void)
-{
- free_irq(TIMER1_IRQ, 0);
-
- unregister_sound_dsp(device_major);
- kfree((void *)data_buffer);
-}
-
-module_init(dac_audio_init);
-module_exit(dac_audio_exit);
-
-MODULE_AUTHOR("Andriy Skulysh, askulysh@image.kiev.ua");
-MODULE_DESCRIPTION("SH DAC sound driver");
-MODULE_LICENSE("GPL");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-07 21:14:59 +0000