| /* |
| * Copyright (c) 2016, Intel Corporation |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * * Neither the name of the Intel Corporation nor the |
| * names of its contributors may be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| * |
| * Author: Liam Girdwood <liam.r.girdwood@linux.intel.com> |
| */ |
| |
| #include <stdint.h> |
| #include <stddef.h> |
| #include <errno.h> |
| #include <sof/sof.h> |
| #include <sof/lock.h> |
| #include <sof/list.h> |
| #include <sof/stream.h> |
| #include <sof/alloc.h> |
| #include <sof/audio/component.h> |
| #include <sof/audio/pipeline.h> |
| #include <uapi/ipc.h> |
| |
| struct comp_data { |
| struct list_item list; /* list of components */ |
| spinlock_t lock; |
| }; |
| |
| static struct comp_data *cd; |
| |
| static struct comp_driver *get_drv(uint32_t type) |
| { |
| struct list_item *clist; |
| struct comp_driver *drv = NULL; |
| |
| spin_lock(&cd->lock); |
| |
| /* search driver list for driver type */ |
| list_for_item(clist, &cd->list) { |
| |
| drv = container_of(clist, struct comp_driver, list); |
| if (drv->type == type) |
| goto out; |
| } |
| |
| /* not found */ |
| drv = NULL; |
| |
| out: |
| spin_unlock(&cd->lock); |
| return drv; |
| } |
| |
| struct comp_dev *comp_new(struct sof_ipc_comp *comp) |
| { |
| struct comp_dev *cdev; |
| struct comp_driver *drv; |
| |
| /* find the driver for our new component */ |
| drv = get_drv(comp->type); |
| if (drv == NULL) { |
| trace_comp_error("eCD"); |
| trace_error_value(comp->type); |
| return NULL; |
| } |
| |
| /* create the new component */ |
| cdev = drv->ops.new(comp); |
| if (cdev == NULL) { |
| trace_comp_error("eCN"); |
| return NULL; |
| } |
| |
| /* init component */ |
| memcpy(&cdev->comp, comp, sizeof(*comp)); |
| cdev->drv = drv; |
| spinlock_init(&cdev->lock); |
| list_init(&cdev->bsource_list); |
| list_init(&cdev->bsink_list); |
| |
| return cdev; |
| } |
| |
| int comp_register(struct comp_driver *drv) |
| { |
| spin_lock(&cd->lock); |
| list_item_prepend(&drv->list, &cd->list); |
| spin_unlock(&cd->lock); |
| |
| return 0; |
| } |
| |
| void comp_unregister(struct comp_driver *drv) |
| { |
| spin_lock(&cd->lock); |
| list_item_del(&drv->list); |
| spin_unlock(&cd->lock); |
| } |
| |
| int comp_set_state(struct comp_dev *dev, int cmd) |
| { |
| int ret = 0; |
| |
| switch (cmd) { |
| case COMP_TRIGGER_START: |
| if (dev->state == COMP_STATE_PREPARE) { |
| dev->state = COMP_STATE_ACTIVE; |
| } else { |
| trace_comp_error("CES"); |
| trace_error_value(dev->state); |
| ret = -EINVAL; |
| } |
| break; |
| case COMP_TRIGGER_RELEASE: |
| if (dev->state == COMP_STATE_PAUSED) { |
| dev->state = COMP_STATE_ACTIVE; |
| } else { |
| trace_comp_error("CEr"); |
| trace_error_value(dev->state); |
| ret = -EINVAL; |
| } |
| break; |
| case COMP_TRIGGER_STOP: |
| case COMP_TRIGGER_XRUN: |
| if (dev->state == COMP_STATE_ACTIVE || |
| dev->state == COMP_STATE_PAUSED) { |
| dev->state = COMP_STATE_PREPARE; |
| } else { |
| trace_comp_error("CEs"); |
| trace_error_value(dev->state); |
| ret = -EINVAL; |
| } |
| break; |
| case COMP_TRIGGER_PAUSE: |
| /* only support pausing for running */ |
| if (dev->state == COMP_STATE_ACTIVE) |
| dev->state = COMP_STATE_PAUSED; |
| else { |
| trace_comp_error("CEp"); |
| trace_error_value(dev->state); |
| ret = -EINVAL; |
| } |
| break; |
| case COMP_TRIGGER_RESET: |
| /* reset always succeeds */ |
| if (dev->state == COMP_STATE_ACTIVE || |
| dev->state == COMP_STATE_PAUSED) { |
| trace_comp_error("CER"); |
| trace_error_value(dev->state); |
| ret = 0; |
| } |
| dev->state = COMP_STATE_READY; |
| break; |
| case COMP_TRIGGER_PREPARE: |
| if (dev->state == COMP_STATE_PREPARE || |
| dev->state == COMP_STATE_READY) { |
| dev->state = COMP_STATE_PREPARE; |
| } else { |
| trace_comp_error("CEP"); |
| trace_error_value(dev->state); |
| ret = -EINVAL; |
| } |
| break; |
| default: |
| break; |
| } |
| |
| return ret; |
| } |
| |
| void sys_comp_init(void) |
| { |
| cd = rzalloc(RZONE_SYS, SOF_MEM_CAPS_RAM, sizeof(*cd)); |
| list_init(&cd->list); |
| spinlock_init(&cd->lock); |
| } |