diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.c new file mode 100644 index 000000000..cfed17c06 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv04.c @@ -0,0 +1,75 @@ +/* + * Copyright 2012 Nouveau Community + * + * 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: Martin Peres <martin.peres@labri.fr> + * Ben Skeggs + */ +#include "priv.h" + +#include <subdev/gpio.h> + +static void +nv04_bus_intr(struct nvkm_bus *bus) +{ + struct nvkm_subdev *subdev = &bus->subdev; + struct nvkm_device *device = subdev->device; + u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140); + + if (stat & 0x00000001) { + nvkm_error(subdev, "BUS ERROR\n"); + stat &= ~0x00000001; + nvkm_wr32(device, 0x001100, 0x00000001); + } + + if (stat & 0x00000110) { + struct nvkm_gpio *gpio = device->gpio; + if (gpio) + nvkm_subdev_intr(&gpio->subdev); + stat &= ~0x00000110; + nvkm_wr32(device, 0x001100, 0x00000110); + } + + if (stat) { + nvkm_error(subdev, "intr %08x\n", stat); + nvkm_mask(device, 0x001140, stat, 0x00000000); + } +} + +static void +nv04_bus_init(struct nvkm_bus *bus) +{ + struct nvkm_device *device = bus->subdev.device; + nvkm_wr32(device, 0x001100, 0xffffffff); + nvkm_wr32(device, 0x001140, 0x00000111); +} + +static const struct nvkm_bus_func +nv04_bus = { + .init = nv04_bus_init, + .intr = nv04_bus_intr, +}; + +int +nv04_bus_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, + struct nvkm_bus **pbus) +{ + return nvkm_bus_new_(&nv04_bus, device, type, inst, pbus); +} |