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/*
* Copyright 2015 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Ben Skeggs <bskeggs@redhat.com>
*/
#include <core/tegra.h>
#ifdef CONFIG_NOUVEAU_PLATFORM_DRIVER
#include "priv.h"
static struct nvkm_device_tegra *
nvkm_device_tegra(struct nvkm_device *obj)
{
return container_of(obj, struct nvkm_device_tegra, device);
}
static irqreturn_t
nvkm_device_tegra_intr(int irq, void *arg)
{
struct nvkm_device_tegra *tdev = arg;
struct nvkm_mc *mc = tdev->device.mc;
bool handled = false;
if (likely(mc)) {
nvkm_mc_intr_unarm(mc);
nvkm_mc_intr(mc, &handled);
nvkm_mc_intr_rearm(mc);
}
return handled ? IRQ_HANDLED : IRQ_NONE;
}
static void
nvkm_device_tegra_fini(struct nvkm_device *device, bool suspend)
{
struct nvkm_device_tegra *tdev = nvkm_device_tegra(device);
if (tdev->irq) {
free_irq(tdev->irq, tdev);
tdev->irq = 0;
};
}
static int
nvkm_device_tegra_init(struct nvkm_device *device)
{
struct nvkm_device_tegra *tdev = nvkm_device_tegra(device);
int irq, ret;
irq = platform_get_irq_byname(tdev->pdev, "stall");
if (irq < 0)
return irq;
ret = request_irq(irq, nvkm_device_tegra_intr,
IRQF_SHARED, "nvkm", tdev);
if (ret)
return ret;
tdev->irq = irq;
return 0;
}
static const struct nvkm_device_func
nvkm_device_tegra_func = {
.tegra = nvkm_device_tegra,
.init = nvkm_device_tegra_init,
.fini = nvkm_device_tegra_fini,
};
int
nvkm_device_tegra_new(struct platform_device *pdev,
const char *cfg, const char *dbg,
bool detect, bool mmio, u64 subdev_mask,
struct nvkm_device **pdevice)
{
struct nvkm_device_tegra *tdev;
if (!(tdev = kzalloc(sizeof(*tdev), GFP_KERNEL)))
return -ENOMEM;
*pdevice = &tdev->device;
tdev->pdev = pdev;
tdev->irq = -1;
return nvkm_device_ctor(&nvkm_device_tegra_func, NULL, pdev,
NVKM_BUS_PLATFORM, pdev->id, NULL,
cfg, dbg, detect, mmio, subdev_mask,
&tdev->device);
}
#else
int
nvkm_device_tegra_new(struct platform_device *pdev,
const char *cfg, const char *dbg,
bool detect, bool mmio, u64 subdev_mask,
struct nvkm_device **pdevice)
{
return -ENOSYS;
}
#endif
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