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sound: ac97: Remove sound driver for ancient platform
Xilinx PowerPC platforms are no longer supported and none is really testing these platforms that's why remove them. If someone has any issue with it these patches can be reverted. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Acked-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/31a3b884dde2c47a30bb2b92355978b97ea70f86.1585575111.git.michal.simek@xilinx.com
This commit is contained in:
Michal Simek
Michael Ellerman
parent
7ade8495dc
commit
f16dca3e30
@ -186,18 +186,6 @@ config SND_PORTMAN2X4
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To compile this driver as a module, choose M here: the module
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will be called snd-portman2x4.
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config SND_ML403_AC97CR
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tristate "Xilinx ML403 AC97 Controller Reference"
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depends on XILINX_VIRTEX
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select SND_AC97_CODEC
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help
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Say Y here to include support for the
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opb_ac97_controller_ref_v1_00_a ip core found in Xilinx's ML403
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reference design.
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To compile this driver as a module, choose M here: the module
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will be called snd-ml403_ac97cr.
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config SND_AC97_POWER_SAVE
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bool "AC97 Power-Saving Mode"
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depends on SND_AC97_CODEC
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@ -11,7 +11,6 @@ snd-mts64-objs := mts64.o
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snd-portman2x4-objs := portman2x4.o
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snd-serial-u16550-objs := serial-u16550.o
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snd-virmidi-objs := virmidi.o
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snd-ml403-ac97cr-objs := ml403-ac97cr.o pcm-indirect2.o
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# Toplevel Module Dependency
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obj-$(CONFIG_SND_DUMMY) += snd-dummy.o
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@ -21,6 +20,5 @@ obj-$(CONFIG_SND_SERIAL_U16550) += snd-serial-u16550.o
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obj-$(CONFIG_SND_MTPAV) += snd-mtpav.o
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obj-$(CONFIG_SND_MTS64) += snd-mts64.o
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obj-$(CONFIG_SND_PORTMAN2X4) += snd-portman2x4.o
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obj-$(CONFIG_SND_ML403_AC97CR) += snd-ml403-ac97cr.o
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obj-$(CONFIG_SND) += opl3/ opl4/ mpu401/ vx/ pcsp/
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File diff suppressed because it is too large
Load Diff
@ -1,560 +0,0 @@
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Helper functions for indirect PCM data transfer to a simple FIFO in
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* hardware (small, no possibility to read "hardware io position",
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* updating position done by interrupt, ...)
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*
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* Copyright (c) by 2007 Joachim Foerster <JOFT@gmx.de>
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*
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* Based on "pcm-indirect.h" (alsa-driver-1.0.13) by
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*
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* Copyright (c) by Takashi Iwai <tiwai@suse.de>
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* Jaroslav Kysela <perex@suse.cz>
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*/
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/* snd_printk/d() */
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#include <sound/core.h>
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/* struct snd_pcm_substream, struct snd_pcm_runtime, snd_pcm_uframes_t
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* snd_pcm_period_elapsed() */
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#include <sound/pcm.h>
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#include "pcm-indirect2.h"
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#ifdef SND_PCM_INDIRECT2_STAT
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/* jiffies */
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#include <linux/jiffies.h>
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void snd_pcm_indirect2_stat(struct snd_pcm_substream *substream,
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struct snd_pcm_indirect2 *rec)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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int i;
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int j;
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int k;
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int seconds = (rec->lastbytetime - rec->firstbytetime) / HZ;
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snd_printk(KERN_DEBUG "STAT: mul_elapsed: %u, mul_elapsed_real: %d, "
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"irq_occurred: %d\n",
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rec->mul_elapsed, rec->mul_elapsed_real, rec->irq_occured);
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snd_printk(KERN_DEBUG "STAT: min_multiple: %d (irqs/period)\n",
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rec->min_multiple);
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snd_printk(KERN_DEBUG "STAT: firstbytetime: %lu, lastbytetime: %lu, "
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"firstzerotime: %lu\n",
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rec->firstbytetime, rec->lastbytetime, rec->firstzerotime);
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snd_printk(KERN_DEBUG "STAT: bytes2hw: %u Bytes => (by runtime->rate) "
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"length: %d s\n",
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rec->bytes2hw, rec->bytes2hw / 2 / 2 / runtime->rate);
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snd_printk(KERN_DEBUG "STAT: (by measurement) length: %d => "
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"rate: %d Bytes/s = %d Frames/s|Hz\n",
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seconds, rec->bytes2hw / seconds,
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rec->bytes2hw / 2 / 2 / seconds);
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snd_printk(KERN_DEBUG
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"STAT: zeros2hw: %u = %d ms ~ %d * %d zero copies\n",
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rec->zeros2hw, ((rec->zeros2hw / 2 / 2) * 1000) /
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runtime->rate,
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rec->zeros2hw / (rec->hw_buffer_size / 2),
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(rec->hw_buffer_size / 2));
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snd_printk(KERN_DEBUG "STAT: pointer_calls: %u, lastdifftime: %u\n",
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rec->pointer_calls, rec->lastdifftime);
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snd_printk(KERN_DEBUG "STAT: sw_io: %d, sw_data: %d\n", rec->sw_io,
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rec->sw_data);
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snd_printk(KERN_DEBUG "STAT: byte_sizes[]:\n");
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k = 0;
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for (j = 0; j < 8; j++) {
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for (i = j * 8; i < (j + 1) * 8; i++)
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if (rec->byte_sizes[i] != 0) {
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snd_printk(KERN_DEBUG "%u: %u",
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i, rec->byte_sizes[i]);
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k++;
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}
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if (((k % 8) == 0) && (k != 0)) {
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snd_printk(KERN_DEBUG "\n");
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k = 0;
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}
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}
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snd_printk(KERN_DEBUG "\n");
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snd_printk(KERN_DEBUG "STAT: zero_sizes[]:\n");
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for (j = 0; j < 8; j++) {
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k = 0;
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for (i = j * 8; i < (j + 1) * 8; i++)
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if (rec->zero_sizes[i] != 0)
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snd_printk(KERN_DEBUG "%u: %u",
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i, rec->zero_sizes[i]);
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else
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k++;
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if (!k)
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snd_printk(KERN_DEBUG "\n");
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}
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snd_printk(KERN_DEBUG "\n");
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snd_printk(KERN_DEBUG "STAT: min_adds[]:\n");
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for (j = 0; j < 8; j++) {
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if (rec->min_adds[j] != 0)
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snd_printk(KERN_DEBUG "%u: %u", j, rec->min_adds[j]);
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}
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snd_printk(KERN_DEBUG "\n");
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snd_printk(KERN_DEBUG "STAT: mul_adds[]:\n");
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for (j = 0; j < 8; j++) {
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if (rec->mul_adds[j] != 0)
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snd_printk(KERN_DEBUG "%u: %u", j, rec->mul_adds[j]);
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}
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snd_printk(KERN_DEBUG "\n");
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snd_printk(KERN_DEBUG
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"STAT: zero_times_saved: %d, zero_times_notsaved: %d\n",
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rec->zero_times_saved, rec->zero_times_notsaved);
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/* snd_printk(KERN_DEBUG "STAT: zero_times[]\n");
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i = 0;
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for (j = 0; j < 3750; j++) {
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if (rec->zero_times[j] != 0) {
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snd_printk(KERN_DEBUG "%u: %u", j, rec->zero_times[j]);
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i++;
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}
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if (((i % 8) == 0) && (i != 0))
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snd_printk(KERN_DEBUG "\n");
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}
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snd_printk(KERN_DEBUG "\n"); */
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return;
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}
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#endif
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/*
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* _internal_ helper function for playback/capture transfer function
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*/
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static void
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snd_pcm_indirect2_increase_min_periods(struct snd_pcm_substream *substream,
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struct snd_pcm_indirect2 *rec,
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int isplay, int iscopy,
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unsigned int bytes)
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{
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if (rec->min_periods >= 0) {
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if (iscopy) {
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rec->sw_io += bytes;
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if (rec->sw_io >= rec->sw_buffer_size)
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rec->sw_io -= rec->sw_buffer_size;
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} else if (isplay) {
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/* If application does not write data in multiples of
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* a period, move sw_data to the next correctly aligned
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* position, so that sw_io can converge to it (in the
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* next step).
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*/
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if (!rec->check_alignment) {
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if (rec->bytes2hw %
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snd_pcm_lib_period_bytes(substream)) {
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unsigned bytes2hw_aligned =
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(1 +
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(rec->bytes2hw /
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snd_pcm_lib_period_bytes
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(substream))) *
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snd_pcm_lib_period_bytes
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(substream);
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rec->sw_data =
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bytes2hw_aligned %
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rec->sw_buffer_size;
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#ifdef SND_PCM_INDIRECT2_STAT
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snd_printk(KERN_DEBUG
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"STAT: @re-align: aligned "
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"bytes2hw to next period "
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"size boundary: %d "
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"(instead of %d)\n",
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bytes2hw_aligned,
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rec->bytes2hw);
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snd_printk(KERN_DEBUG
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"STAT: @re-align: sw_data "
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"moves to: %d\n",
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rec->sw_data);
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#endif
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}
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rec->check_alignment = 1;
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}
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/* We are at the end and are copying zeros into the
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* fifo.
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* Now, we have to make sure that sw_io is increased
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* until the position of sw_data: Filling the fifo with
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* the first zeros means, the last bytes were played.
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*/
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if (rec->sw_io != rec->sw_data) {
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unsigned int diff;
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if (rec->sw_data > rec->sw_io)
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diff = rec->sw_data - rec->sw_io;
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else
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diff = (rec->sw_buffer_size -
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rec->sw_io) +
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rec->sw_data;
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if (bytes >= diff)
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rec->sw_io = rec->sw_data;
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else {
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rec->sw_io += bytes;
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if (rec->sw_io >= rec->sw_buffer_size)
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rec->sw_io -=
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rec->sw_buffer_size;
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}
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}
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}
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rec->min_period_count += bytes;
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if (rec->min_period_count >= (rec->hw_buffer_size / 2)) {
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rec->min_periods += (rec->min_period_count /
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(rec->hw_buffer_size / 2));
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#ifdef SND_PCM_INDIRECT2_STAT
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if ((rec->min_period_count /
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(rec->hw_buffer_size / 2)) > 7)
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snd_printk(KERN_DEBUG
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"STAT: more than 7 (%d) min_adds "
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"at once - too big to save!\n",
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(rec->min_period_count /
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(rec->hw_buffer_size / 2)));
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else
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rec->min_adds[(rec->min_period_count /
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(rec->hw_buffer_size / 2))]++;
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#endif
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rec->min_period_count = (rec->min_period_count %
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(rec->hw_buffer_size / 2));
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}
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} else if (isplay && iscopy)
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rec->min_periods = 0;
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}
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/*
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* helper function for playback/capture pointer callback
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*/
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snd_pcm_uframes_t
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snd_pcm_indirect2_pointer(struct snd_pcm_substream *substream,
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struct snd_pcm_indirect2 *rec)
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{
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#ifdef SND_PCM_INDIRECT2_STAT
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rec->pointer_calls++;
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#endif
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return bytes_to_frames(substream->runtime, rec->sw_io);
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}
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/*
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* _internal_ helper function for playback interrupt callback
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*/
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static void
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snd_pcm_indirect2_playback_transfer(struct snd_pcm_substream *substream,
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struct snd_pcm_indirect2 *rec,
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snd_pcm_indirect2_copy_t copy,
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snd_pcm_indirect2_zero_t zero)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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snd_pcm_uframes_t appl_ptr = runtime->control->appl_ptr;
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/* runtime->control->appl_ptr: position where ALSA will write next time
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* rec->appl_ptr: position where ALSA was last time
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* diff: obviously ALSA wrote that much bytes into the intermediate
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* buffer since we checked last time
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*/
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snd_pcm_sframes_t diff = appl_ptr - rec->appl_ptr;
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if (diff) {
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#ifdef SND_PCM_INDIRECT2_STAT
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rec->lastdifftime = jiffies;
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#endif
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if (diff < -(snd_pcm_sframes_t) (runtime->boundary / 2))
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diff += runtime->boundary;
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/* number of bytes "added" by ALSA increases the number of
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* bytes which are ready to "be transferred to HW"/"played"
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* Then, set rec->appl_ptr to not count bytes twice next time.
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*/
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rec->sw_ready += (int)frames_to_bytes(runtime, diff);
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rec->appl_ptr = appl_ptr;
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}
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if (rec->hw_ready && (rec->sw_ready <= 0)) {
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unsigned int bytes;
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#ifdef SND_PCM_INDIRECT2_STAT
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if (rec->firstzerotime == 0) {
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rec->firstzerotime = jiffies;
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snd_printk(KERN_DEBUG
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"STAT: @firstzerotime: mul_elapsed: %d, "
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"min_period_count: %d\n",
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rec->mul_elapsed, rec->min_period_count);
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snd_printk(KERN_DEBUG
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"STAT: @firstzerotime: sw_io: %d, "
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"sw_data: %d, appl_ptr: %u\n",
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rec->sw_io, rec->sw_data,
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(unsigned int)appl_ptr);
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}
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if ((jiffies - rec->firstzerotime) < 3750) {
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rec->zero_times[(jiffies - rec->firstzerotime)]++;
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rec->zero_times_saved++;
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} else
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rec->zero_times_notsaved++;
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#endif
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bytes = zero(substream, rec);
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#ifdef SND_PCM_INDIRECT2_STAT
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rec->zeros2hw += bytes;
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if (bytes < 64)
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rec->zero_sizes[bytes]++;
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else
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snd_printk(KERN_DEBUG
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"STAT: %d zero Bytes copied to hardware at "
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"once - too big to save!\n",
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bytes);
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#endif
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snd_pcm_indirect2_increase_min_periods(substream, rec, 1, 0,
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bytes);
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return;
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}
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while (rec->hw_ready && (rec->sw_ready > 0)) {
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/* sw_to_end: max. number of bytes that can be read/take from
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* the current position (sw_data) in _one_ step
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*/
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unsigned int sw_to_end = rec->sw_buffer_size - rec->sw_data;
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/* bytes: number of bytes we have available (for reading) */
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unsigned int bytes = rec->sw_ready;
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if (sw_to_end < bytes)
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bytes = sw_to_end;
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if (!bytes)
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break;
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#ifdef SND_PCM_INDIRECT2_STAT
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if (rec->firstbytetime == 0)
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rec->firstbytetime = jiffies;
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rec->lastbytetime = jiffies;
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#endif
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/* copy bytes from intermediate buffer position sw_data to the
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* HW and return number of bytes actually written
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* Furthermore, set hw_ready to 0, if the fifo isn't empty
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* now => more could be transferred to fifo
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*/
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bytes = copy(substream, rec, bytes);
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rec->bytes2hw += bytes;
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#ifdef SND_PCM_INDIRECT2_STAT
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if (bytes < 64)
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rec->byte_sizes[bytes]++;
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else
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snd_printk(KERN_DEBUG
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"STAT: %d Bytes copied to hardware at once "
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"- too big to save!\n",
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bytes);
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#endif
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/* increase sw_data by the number of actually written bytes
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* (= number of taken bytes from intermediate buffer)
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*/
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rec->sw_data += bytes;
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if (rec->sw_data == rec->sw_buffer_size)
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rec->sw_data = 0;
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/* now sw_data is the position where ALSA is going to write
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* in the intermediate buffer next time = position we are going
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* to read from next time
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*/
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snd_pcm_indirect2_increase_min_periods(substream, rec, 1, 1,
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bytes);
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/* we read bytes from intermediate buffer, so we need to say
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* that the number of bytes ready for transfer are decreased
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* now
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*/
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rec->sw_ready -= bytes;
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}
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return;
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}
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|
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/*
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* helper function for playback interrupt routine
|
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*/
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void
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snd_pcm_indirect2_playback_interrupt(struct snd_pcm_substream *substream,
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struct snd_pcm_indirect2 *rec,
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snd_pcm_indirect2_copy_t copy,
|
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snd_pcm_indirect2_zero_t zero)
|
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{
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#ifdef SND_PCM_INDIRECT2_STAT
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rec->irq_occured++;
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#endif
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/* hardware played some bytes, so there is room again (in fifo) */
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rec->hw_ready = 1;
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|
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/* don't call ack() now, instead call transfer() function directly
|
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* (normally called by ack() )
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*/
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snd_pcm_indirect2_playback_transfer(substream, rec, copy, zero);
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if (rec->min_periods >= rec->min_multiple) {
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#ifdef SND_PCM_INDIRECT2_STAT
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if ((rec->min_periods / rec->min_multiple) > 7)
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snd_printk(KERN_DEBUG
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"STAT: more than 7 (%d) mul_adds - too big "
|
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"to save!\n",
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(rec->min_periods / rec->min_multiple));
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else
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rec->mul_adds[(rec->min_periods /
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rec->min_multiple)]++;
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rec->mul_elapsed_real += (rec->min_periods /
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rec->min_multiple);
|
||||
rec->mul_elapsed++;
|
||||
#endif
|
||||
rec->min_periods = (rec->min_periods % rec->min_multiple);
|
||||
snd_pcm_period_elapsed(substream);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* _internal_ helper function for capture interrupt callback
|
||||
*/
|
||||
static void
|
||||
snd_pcm_indirect2_capture_transfer(struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_indirect2 *rec,
|
||||
snd_pcm_indirect2_copy_t copy,
|
||||
snd_pcm_indirect2_zero_t null)
|
||||
{
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
snd_pcm_uframes_t appl_ptr = runtime->control->appl_ptr;
|
||||
snd_pcm_sframes_t diff = appl_ptr - rec->appl_ptr;
|
||||
|
||||
if (diff) {
|
||||
#ifdef SND_PCM_INDIRECT2_STAT
|
||||
rec->lastdifftime = jiffies;
|
||||
#endif
|
||||
if (diff < -(snd_pcm_sframes_t) (runtime->boundary / 2))
|
||||
diff += runtime->boundary;
|
||||
rec->sw_ready -= frames_to_bytes(runtime, diff);
|
||||
rec->appl_ptr = appl_ptr;
|
||||
}
|
||||
/* if hardware has something, but the intermediate buffer is full
|
||||
* => skip contents of buffer
|
||||
*/
|
||||
if (rec->hw_ready && (rec->sw_ready >= (int)rec->sw_buffer_size)) {
|
||||
unsigned int bytes;
|
||||
|
||||
#ifdef SND_PCM_INDIRECT2_STAT
|
||||
if (rec->firstzerotime == 0) {
|
||||
rec->firstzerotime = jiffies;
|
||||
snd_printk(KERN_DEBUG "STAT: (capture) "
|
||||
"@firstzerotime: mul_elapsed: %d, "
|
||||
"min_period_count: %d\n",
|
||||
rec->mul_elapsed, rec->min_period_count);
|
||||
snd_printk(KERN_DEBUG "STAT: (capture) "
|
||||
"@firstzerotime: sw_io: %d, sw_data: %d, "
|
||||
"appl_ptr: %u\n",
|
||||
rec->sw_io, rec->sw_data,
|
||||
(unsigned int)appl_ptr);
|
||||
}
|
||||
if ((jiffies - rec->firstzerotime) < 3750) {
|
||||
rec->zero_times[(jiffies - rec->firstzerotime)]++;
|
||||
rec->zero_times_saved++;
|
||||
} else
|
||||
rec->zero_times_notsaved++;
|
||||
#endif
|
||||
bytes = null(substream, rec);
|
||||
|
||||
#ifdef SND_PCM_INDIRECT2_STAT
|
||||
rec->zeros2hw += bytes;
|
||||
if (bytes < 64)
|
||||
rec->zero_sizes[bytes]++;
|
||||
else
|
||||
snd_printk(KERN_DEBUG
|
||||
"STAT: (capture) %d zero Bytes copied to "
|
||||
"hardware at once - too big to save!\n",
|
||||
bytes);
|
||||
#endif
|
||||
snd_pcm_indirect2_increase_min_periods(substream, rec, 0, 0,
|
||||
bytes);
|
||||
/* report an overrun */
|
||||
rec->sw_io = SNDRV_PCM_POS_XRUN;
|
||||
return;
|
||||
}
|
||||
while (rec->hw_ready && (rec->sw_ready < (int)rec->sw_buffer_size)) {
|
||||
/* sw_to_end: max. number of bytes that we can write to the
|
||||
* intermediate buffer (until it's end)
|
||||
*/
|
||||
size_t sw_to_end = rec->sw_buffer_size - rec->sw_data;
|
||||
|
||||
/* bytes: max. number of bytes, which may be copied to the
|
||||
* intermediate buffer without overflow (in _one_ step)
|
||||
*/
|
||||
size_t bytes = rec->sw_buffer_size - rec->sw_ready;
|
||||
|
||||
/* limit number of bytes (for transfer) by available room in
|
||||
* the intermediate buffer
|
||||
*/
|
||||
if (sw_to_end < bytes)
|
||||
bytes = sw_to_end;
|
||||
if (!bytes)
|
||||
break;
|
||||
|
||||
#ifdef SND_PCM_INDIRECT2_STAT
|
||||
if (rec->firstbytetime == 0)
|
||||
rec->firstbytetime = jiffies;
|
||||
rec->lastbytetime = jiffies;
|
||||
#endif
|
||||
/* copy bytes from the intermediate buffer (position sw_data)
|
||||
* to the HW at most and return number of bytes actually copied
|
||||
* from HW
|
||||
* Furthermore, set hw_ready to 0, if the fifo is empty now.
|
||||
*/
|
||||
bytes = copy(substream, rec, bytes);
|
||||
rec->bytes2hw += bytes;
|
||||
|
||||
#ifdef SND_PCM_INDIRECT2_STAT
|
||||
if (bytes < 64)
|
||||
rec->byte_sizes[bytes]++;
|
||||
else
|
||||
snd_printk(KERN_DEBUG
|
||||
"STAT: (capture) %d Bytes copied to "
|
||||
"hardware at once - too big to save!\n",
|
||||
bytes);
|
||||
#endif
|
||||
/* increase sw_data by the number of actually copied bytes from
|
||||
* HW
|
||||
*/
|
||||
rec->sw_data += bytes;
|
||||
if (rec->sw_data == rec->sw_buffer_size)
|
||||
rec->sw_data = 0;
|
||||
|
||||
snd_pcm_indirect2_increase_min_periods(substream, rec, 0, 1,
|
||||
bytes);
|
||||
|
||||
/* number of bytes in the intermediate buffer, which haven't
|
||||
* been fetched by ALSA yet.
|
||||
*/
|
||||
rec->sw_ready += bytes;
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
/*
|
||||
* helper function for capture interrupt routine
|
||||
*/
|
||||
void
|
||||
snd_pcm_indirect2_capture_interrupt(struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_indirect2 *rec,
|
||||
snd_pcm_indirect2_copy_t copy,
|
||||
snd_pcm_indirect2_zero_t null)
|
||||
{
|
||||
#ifdef SND_PCM_INDIRECT2_STAT
|
||||
rec->irq_occured++;
|
||||
#endif
|
||||
/* hardware recorded some bytes, so there is something to read from the
|
||||
* record fifo:
|
||||
*/
|
||||
rec->hw_ready = 1;
|
||||
|
||||
/* don't call ack() now, instead call transfer() function directly
|
||||
* (normally called by ack() )
|
||||
*/
|
||||
snd_pcm_indirect2_capture_transfer(substream, rec, copy, null);
|
||||
|
||||
if (rec->min_periods >= rec->min_multiple) {
|
||||
|
||||
#ifdef SND_PCM_INDIRECT2_STAT
|
||||
if ((rec->min_periods / rec->min_multiple) > 7)
|
||||
snd_printk(KERN_DEBUG
|
||||
"STAT: more than 7 (%d) mul_adds - "
|
||||
"too big to save!\n",
|
||||
(rec->min_periods / rec->min_multiple));
|
||||
else
|
||||
rec->mul_adds[(rec->min_periods /
|
||||
rec->min_multiple)]++;
|
||||
rec->mul_elapsed_real += (rec->min_periods /
|
||||
rec->min_multiple);
|
||||
rec->mul_elapsed++;
|
||||
#endif
|
||||
rec->min_periods = (rec->min_periods % rec->min_multiple);
|
||||
snd_pcm_period_elapsed(substream);
|
||||
}
|
||||
}
|
||||
@ -1,127 +0,0 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
||||
/*
|
||||
* Helper functions for indirect PCM data transfer to a simple FIFO in
|
||||
* hardware (small, no possibility to read "hardware io position",
|
||||
* updating position done by interrupt, ...)
|
||||
*
|
||||
* Copyright (c) by 2007 Joachim Foerster <JOFT@gmx.de>
|
||||
*
|
||||
* Based on "pcm-indirect.h" (alsa-driver-1.0.13) by
|
||||
*
|
||||
* Copyright (c) by Takashi Iwai <tiwai@suse.de>
|
||||
* Jaroslav Kysela <perex@suse.cz>
|
||||
*/
|
||||
|
||||
#ifndef __SOUND_PCM_INDIRECT2_H
|
||||
#define __SOUND_PCM_INDIRECT2_H
|
||||
|
||||
/* struct snd_pcm_substream, struct snd_pcm_runtime, snd_pcm_uframes_t */
|
||||
#include <sound/pcm.h>
|
||||
|
||||
/* Debug options for code which may be removed completely in a final version */
|
||||
#ifdef CONFIG_SND_DEBUG
|
||||
#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
|
||||
|
||||
struct snd_pcm_indirect2 {
|
||||
unsigned int hw_buffer_size; /* Byte size of hardware buffer */
|
||||
int hw_ready; /* playback: 1 = hw fifo has room left,
|
||||
* 0 = hw fifo is full
|
||||
*/
|
||||
unsigned int min_multiple;
|
||||
int min_periods; /* counts number of min. periods until
|
||||
* min_multiple is reached
|
||||
*/
|
||||
int min_period_count; /* counts bytes to count number of
|
||||
* min. periods
|
||||
*/
|
||||
|
||||
unsigned int sw_buffer_size; /* Byte size of software buffer */
|
||||
|
||||
/* sw_data: position in intermediate buffer, where we will read (or
|
||||
* write) from/to next time (to transfer data to/from HW)
|
||||
*/
|
||||
unsigned int sw_data; /* Offset to next dst (or src) in sw
|
||||
* ring buffer
|
||||
*/
|
||||
/* easiest case (playback):
|
||||
* sw_data is nearly the same as ~ runtime->control->appl_ptr, with the
|
||||
* exception that sw_data is "behind" by the number if bytes ALSA wrote
|
||||
* to the intermediate buffer last time.
|
||||
* A call to ack() callback synchronizes both indirectly.
|
||||
*/
|
||||
|
||||
/* We have no real sw_io pointer here. Usually sw_io is pointing to the
|
||||
* current playback/capture position _inside_ the hardware. Devices
|
||||
* with plain FIFOs often have no possibility to publish this position.
|
||||
* So we say: if sw_data is updated, that means bytes were copied to
|
||||
* the hardware, we increase sw_io by that amount, because there have
|
||||
* to be as much bytes which were played. So sw_io will stay behind
|
||||
* sw_data all the time and has to converge to sw_data at the end of
|
||||
* playback.
|
||||
*/
|
||||
unsigned int sw_io; /* Current software pointer in bytes */
|
||||
|
||||
/* sw_ready: number of bytes ALSA copied to the intermediate buffer, so
|
||||
* it represents the number of bytes which wait for transfer to the HW
|
||||
*/
|
||||
int sw_ready; /* Bytes ready to be transferred to/from hw */
|
||||
|
||||
/* appl_ptr: last known position of ALSA (where ALSA is going to write
|
||||
* next time into the intermediate buffer
|
||||
*/
|
||||
snd_pcm_uframes_t appl_ptr; /* Last seen appl_ptr */
|
||||
|
||||
unsigned int bytes2hw;
|
||||
int check_alignment;
|
||||
|
||||
#ifdef SND_PCM_INDIRECT2_STAT
|
||||
unsigned int zeros2hw;
|
||||
unsigned int mul_elapsed;
|
||||
unsigned int mul_elapsed_real;
|
||||
unsigned long firstbytetime;
|
||||
unsigned long lastbytetime;
|
||||
unsigned long firstzerotime;
|
||||
unsigned int byte_sizes[64];
|
||||
unsigned int zero_sizes[64];
|
||||
unsigned int min_adds[8];
|
||||
unsigned int mul_adds[8];
|
||||
unsigned int zero_times[3750]; /* = 15s */
|
||||
unsigned int zero_times_saved;
|
||||
unsigned int zero_times_notsaved;
|
||||
unsigned int irq_occured;
|
||||
unsigned int pointer_calls;
|
||||
unsigned int lastdifftime;
|
||||
#endif
|
||||
};
|
||||
|
||||
typedef size_t (*snd_pcm_indirect2_copy_t) (struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_indirect2 *rec,
|
||||
size_t bytes);
|
||||
typedef size_t (*snd_pcm_indirect2_zero_t) (struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_indirect2 *rec);
|
||||
|
||||
#ifdef SND_PCM_INDIRECT2_STAT
|
||||
void snd_pcm_indirect2_stat(struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_indirect2 *rec);
|
||||
#endif
|
||||
|
||||
snd_pcm_uframes_t
|
||||
snd_pcm_indirect2_pointer(struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_indirect2 *rec);
|
||||
void
|
||||
snd_pcm_indirect2_playback_interrupt(struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_indirect2 *rec,
|
||||
snd_pcm_indirect2_copy_t copy,
|
||||
snd_pcm_indirect2_zero_t zero);
|
||||
void
|
||||
snd_pcm_indirect2_capture_interrupt(struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_indirect2 *rec,
|
||||
snd_pcm_indirect2_copy_t copy,
|
||||
snd_pcm_indirect2_zero_t null);
|
||||
|
||||
#endif /* __SOUND_PCM_INDIRECT2_H */
|
||||
Loading…
Reference in New Issue
Block a user