76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
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/*
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* Copyright 2012 Nouveau Community
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Martin Peres <martin.peres@labri.fr>
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* Ben Skeggs
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*/
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#include "priv.h"
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#include <subdev/gpio.h>
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static void
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nv04_bus_intr(struct nvkm_bus *bus)
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{
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struct nvkm_subdev *subdev = &bus->subdev;
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struct nvkm_device *device = subdev->device;
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u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);
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if (stat & 0x00000001) {
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nvkm_error(subdev, "BUS ERROR\n");
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stat &= ~0x00000001;
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nvkm_wr32(device, 0x001100, 0x00000001);
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}
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if (stat & 0x00000110) {
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struct nvkm_gpio *gpio = device->gpio;
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if (gpio)
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nvkm_subdev_intr(&gpio->subdev);
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stat &= ~0x00000110;
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nvkm_wr32(device, 0x001100, 0x00000110);
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}
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if (stat) {
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nvkm_error(subdev, "intr %08x\n", stat);
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nvkm_mask(device, 0x001140, stat, 0x00000000);
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}
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}
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static void
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nv04_bus_init(struct nvkm_bus *bus)
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{
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struct nvkm_device *device = bus->subdev.device;
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nvkm_wr32(device, 0x001100, 0xffffffff);
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nvkm_wr32(device, 0x001140, 0x00000111);
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}
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static const struct nvkm_bus_func
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nv04_bus = {
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.init = nv04_bus_init,
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.intr = nv04_bus_intr,
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};
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int
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nv04_bus_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
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struct nvkm_bus **pbus)
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{
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return nvkm_bus_new_(&nv04_bus, device, type, inst, pbus);
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}
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