Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * dsp_pipeline.c: pipelined audio processing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 2007, Nadi Sarrar
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Nadi Sarrar <nadi@beronet.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/mISDNif.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/mISDNdsp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include "dsp.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include "dsp_hwec.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) struct dsp_pipeline_entry {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 	struct mISDN_dsp_element *elem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 	void                *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	struct list_head     list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) struct dsp_element_entry {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	struct mISDN_dsp_element *elem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 	struct device	     dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 	struct list_head     list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) static LIST_HEAD(dsp_elements);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) /* sysfs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) static struct class *elements_class;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) attr_show_args(struct device *dev, struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	struct mISDN_dsp_element *elem = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	char *p = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	*buf = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	for (i = 0; i < elem->num_args; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 		p += sprintf(p, "Name:        %s\n%s%s%sDescription: %s\n\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 			     elem->args[i].name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 			     elem->args[i].def ? "Default:     " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 			     elem->args[i].def ? elem->args[i].def : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 			     elem->args[i].def ? "\n" : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 			     elem->args[i].desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	return p - buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) static struct device_attribute element_attributes[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	__ATTR(args, 0444, attr_show_args, NULL),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) mISDN_dsp_dev_release(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	struct dsp_element_entry *entry =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 		container_of(dev, struct dsp_element_entry, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	list_del(&entry->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	kfree(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) int mISDN_dsp_element_register(struct mISDN_dsp_element *elem)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	struct dsp_element_entry *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	int ret, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	if (!elem)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	entry = kzalloc(sizeof(struct dsp_element_entry), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	if (!entry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	entry->elem = elem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	entry->dev.class = elements_class;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	entry->dev.release = mISDN_dsp_dev_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	dev_set_drvdata(&entry->dev, elem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	dev_set_name(&entry->dev, "%s", elem->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	ret = device_register(&entry->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 		printk(KERN_ERR "%s: failed to register %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		       __func__, elem->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 		goto err1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	list_add_tail(&entry->list, &dsp_elements);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	for (i = 0; i < ARRAY_SIZE(element_attributes); ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 		ret = device_create_file(&entry->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 					 &element_attributes[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 			printk(KERN_ERR "%s: failed to create device file\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 			       __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 			goto err2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) err2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	device_unregister(&entry->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) err1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	kfree(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) EXPORT_SYMBOL(mISDN_dsp_element_register);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) void mISDN_dsp_element_unregister(struct mISDN_dsp_element *elem)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	struct dsp_element_entry *entry, *n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	if (!elem)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	list_for_each_entry_safe(entry, n, &dsp_elements, list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 		if (entry->elem == elem) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 			device_unregister(&entry->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 			return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	printk(KERN_ERR "%s: element %s not in list.\n", __func__, elem->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) EXPORT_SYMBOL(mISDN_dsp_element_unregister);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) int dsp_pipeline_module_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	elements_class = class_create(THIS_MODULE, "dsp_pipeline");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	if (IS_ERR(elements_class))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 		return PTR_ERR(elements_class);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	dsp_hwec_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) void dsp_pipeline_module_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	struct dsp_element_entry *entry, *n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	dsp_hwec_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	class_destroy(elements_class);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	list_for_each_entry_safe(entry, n, &dsp_elements, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		list_del(&entry->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		printk(KERN_WARNING "%s: element was still registered: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 		       __func__, entry->elem->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		kfree(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) int dsp_pipeline_init(struct dsp_pipeline *pipeline)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	if (!pipeline)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	INIT_LIST_HEAD(&pipeline->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) static inline void _dsp_pipeline_destroy(struct dsp_pipeline *pipeline)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	struct dsp_pipeline_entry *entry, *n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	list_for_each_entry_safe(entry, n, &pipeline->list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		list_del(&entry->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		if (entry->elem == dsp_hwec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 			dsp_hwec_disable(container_of(pipeline, struct dsp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 						      pipeline));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 			entry->elem->free(entry->p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 		kfree(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) void dsp_pipeline_destroy(struct dsp_pipeline *pipeline)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	if (!pipeline)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	_dsp_pipeline_destroy(pipeline);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) int dsp_pipeline_build(struct dsp_pipeline *pipeline, const char *cfg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	int found = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	char *dup, *next, *tok, *name, *args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	struct dsp_element_entry *entry, *n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	struct dsp_pipeline_entry *pipeline_entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	struct mISDN_dsp_element *elem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	if (!pipeline)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	if (!list_empty(&pipeline->list))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 		_dsp_pipeline_destroy(pipeline);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	dup = next = kstrdup(cfg, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	if (!dup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	while ((tok = strsep(&next, "|"))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 		if (!strlen(tok))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 			continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 		name = strsep(&tok, "(");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 		args = strsep(&tok, ")");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 		if (args && !*args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 			args = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 		list_for_each_entry_safe(entry, n, &dsp_elements, list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 			if (!strcmp(entry->elem->name, name)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 				elem = entry->elem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 				pipeline_entry = kmalloc(sizeof(struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 								dsp_pipeline_entry), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 				if (!pipeline_entry) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 					printk(KERN_ERR "%s: failed to add "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 					       "entry to pipeline: %s (out of "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 					       "memory)\n", __func__, elem->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 					goto _out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 				}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 				pipeline_entry->elem = elem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 				if (elem == dsp_hwec) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 					/* This is a hack to make the hwec
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 					   available as a pipeline module */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 					dsp_hwec_enable(container_of(pipeline,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 								     struct dsp, pipeline), args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 					list_add_tail(&pipeline_entry->list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 						      &pipeline->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 				} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 					pipeline_entry->p = elem->new(args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 					if (pipeline_entry->p) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 						list_add_tail(&pipeline_entry->
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 							      list, &pipeline->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 					} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 						printk(KERN_ERR "%s: failed "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 						       "to add entry to pipeline: "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 						       "%s (new() returned NULL)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 						       __func__, elem->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 						kfree(pipeline_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 					}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 				}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 				found = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 				break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 		if (found)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 			found = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 			printk(KERN_ERR "%s: element not found, skipping: "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 			       "%s\n", __func__, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) _out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	if (!list_empty(&pipeline->list))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 		pipeline->inuse = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 		pipeline->inuse = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	kfree(dup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) void dsp_pipeline_process_tx(struct dsp_pipeline *pipeline, u8 *data, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	struct dsp_pipeline_entry *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	if (!pipeline)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	list_for_each_entry(entry, &pipeline->list, list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 		if (entry->elem->process_tx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 			entry->elem->process_tx(entry->p, data, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) void dsp_pipeline_process_rx(struct dsp_pipeline *pipeline, u8 *data, int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 			     unsigned int txlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	struct dsp_pipeline_entry *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	if (!pipeline)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	list_for_each_entry_reverse(entry, &pipeline->list, list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 		if (entry->elem->process_rx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 			entry->elem->process_rx(entry->p, data, len, txlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) }