set hp_det gpio

hc

2024-08-12 233ab1bd4c5697f5cdec94e60206e8c6ac609b4c

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// SPDX-License-Identifier: MIT
 
/*
 * Copyright © 2019 Intel Corporation
 */
 
#include "i915_sw_fence_work.h"
 
static void fence_complete(struct dma_fence_work *f)
{
    if (f->ops->release)
        f->ops->release(f);
    dma_fence_signal(&f->dma);
}
 
static void fence_work(struct work_struct *work)
{
    struct dma_fence_work *f = container_of(work, typeof(*f), work);
    int err;
 
    err = f->ops->work(f);
    if (err)
        dma_fence_set_error(&f->dma, err);
 
    fence_complete(f);
    dma_fence_put(&f->dma);
}
 
static int __i915_sw_fence_call
fence_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state)
{
    struct dma_fence_work *f = container_of(fence, typeof(*f), chain);
 
    switch (state) {
    case FENCE_COMPLETE:
        if (fence->error)
            dma_fence_set_error(&f->dma, fence->error);
 
        if (!f->dma.error) {
            dma_fence_get(&f->dma);
            if (test_bit(DMA_FENCE_WORK_IMM, &f->dma.flags))
                fence_work(&f->work);
            else
                queue_work(system_unbound_wq, &f->work);
        } else {
            fence_complete(f);
        }
        break;
 
    case FENCE_FREE:
        dma_fence_put(&f->dma);
        break;
    }
 
    return NOTIFY_DONE;
}
 
static const char *get_driver_name(struct dma_fence *fence)
{
    return "dma-fence";
}
 
static const char *get_timeline_name(struct dma_fence *fence)
{
    struct dma_fence_work *f = container_of(fence, typeof(*f), dma);
 
    return f->ops->name ?: "work";
}
 
static void fence_release(struct dma_fence *fence)
{
    struct dma_fence_work *f = container_of(fence, typeof(*f), dma);
 
    i915_sw_fence_fini(&f->chain);
 
    BUILD_BUG_ON(offsetof(typeof(*f), dma));
    dma_fence_free(&f->dma);
}
 
static const struct dma_fence_ops fence_ops = {
    .get_driver_name = get_driver_name,
    .get_timeline_name = get_timeline_name,
    .release = fence_release,
};
 
void dma_fence_work_init(struct dma_fence_work *f,
             const struct dma_fence_work_ops *ops)
{
    f->ops = ops;
    spin_lock_init(&f->lock);
    dma_fence_init(&f->dma, &fence_ops, &f->lock, 0, 0);
    i915_sw_fence_init(&f->chain, fence_notify);
    INIT_WORK(&f->work, fence_work);
}
 
int dma_fence_work_chain(struct dma_fence_work *f, struct dma_fence *signal)
{
    if (!signal)
        return 0;
 
    return __i915_sw_fence_await_dma_fence(&f->chain, signal, &f->cb);
}