oss/dmasound/dmasound_paula.c

1 // SPDX-License-Identifier: GPL-2.0-only
11  *		     - added versioning
12  *		     - put in and populated the hardware_afmts field.
13  *             [0.2] - put in SNDCTL_DSP_GETCAPS value.
14  *	       [0.3] - put in constraint on state buffer usage.
15  *	       [0.4] - put in default hard/soft settings
65      *  Helper pointers for 16(14)-bit sound
82 static int AmiSetFormat(int format);
92      *  Heartbeat interferes with sound since the 7 kHz low-pass filter and the
133  * to convert samples into the right frequency/encoding. They will only work on
135  * if the user didn't write a multiple of the current sample size. They both
149  * ++geert: split in even more functions (one per format)
154      *  Native format
167 			return -EFAULT;  in ami_ct_s8()
176 				return -EFAULT;  in ami_ct_s8()
177 			count--;  in ami_ct_s8()
186      *  Copy and convert 8 bit data
203 				return -EFAULT;				\
205 			count--;					\
215 				return -EFAULT;				\
218 				return -EFAULT;				\
220 			count--;					\
237      *  Copy and convert 16 bit data
256 				return -EFAULT;				\
260 			count--;					\
271 				return -EFAULT;				\
276 				return -EFAULT;				\
280 			count--;					\
365 		period = amiga_colorclock/dmasound.soft.speed-1;  in AmiInit()
385 static int AmiSetFormat(int format)  in AmiSetFormat()  argument
391 	switch (format) {  in AmiSetFormat()
393 		return dmasound.soft.format;  in AmiSetFormat()
406 	default: /* :-) */  in AmiSetFormat()
408 		format = AFMT_S8;  in AmiSetFormat()
411 	dmasound.soft.format = format;  in AmiSetFormat()
414 		dmasound.dsp.format = format;  in AmiSetFormat()
419 	return format;  in AmiSetFormat()
499 			/* We can play pseudo 14-bit only with the maximum volume */  in AmiPlayNextFrame()
573 		write_sq.count--;  in AmiInterrupt()
642 	return -EINVAL;  in AmiMixerIoctl()
672 	.format	= AFMT_S8,
679 	.format	= AFMT_U8,
707 	.hardware_afmts	= (AFMT_S8 | AFMT_S16_BE), /* h'ware-supported formats *only* here */
737 		.name	= "amiga-audio",
745 MODULE_ALIAS("platform:amiga-audio");