[deliverable/linux.git] / drivers / gpu / drm / nouveau / nvkm / subdev / bus / nv04.c

/*
 * 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>

#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, int index, struct nvkm_bus **pbus)
{
	return nvkm_bus_new_(&nv04_bus, device, index, pbus);
}
Commit	Line	Data
a10220bb MP	1	/*
	2	* Copyright 2012 Nouveau Community
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	18	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	19	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	20	* OTHER DEALINGS IN THE SOFTWARE.
	21	*
	22	* Authors: Martin Peres <martin.peres@labri.fr>
	23	* Ben Skeggs
	24	*/
bb23f9d7 BS	25	#include "priv.h"
	26
	27	#include <subdev/gpio.h>
a10220bb	28
a699a85a BS	29	#include <subdev/gpio.h>
a699a85a BS	30
cd897837	31	static void
bb23f9d7	32	nv04_bus_intr(struct nvkm_bus *bus)
a10220bb	33	{
bb23f9d7	34	struct nvkm_subdev *subdev = &bus->subdev;
a699a85a	35	struct nvkm_device *device = subdev->device;
14caba44	36	u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);
a10220bb MP	37
a10220bb MP	38	if (stat & 0x00000001) {
a699a85a	39	nvkm_error(subdev, "BUS ERROR\n");
a10220bb	40	stat &= ~0x00000001;
14caba44	41	nvkm_wr32(device, 0x001100, 0x00000001);
a10220bb MP	42	}
	43
	44	if (stat & 0x00000110) {
a699a85a	45	struct nvkm_gpio *gpio = device->gpio;
6cf813fb BS	46	if (gpio)
6cf813fb BS	47	nvkm_subdev_intr(&gpio->subdev);
a10220bb	48	stat &= ~0x00000110;
14caba44	49	nvkm_wr32(device, 0x001100, 0x00000110);
a10220bb MP	50	}
	51
	52	if (stat) {
a699a85a	53	nvkm_error(subdev, "intr %08x\n", stat);
14caba44	54	nvkm_mask(device, 0x001140, stat, 0x00000000);
a10220bb MP	55	}
	56	}
	57
bb23f9d7 BS	58	static void
bb23f9d7 BS	59	nv04_bus_init(struct nvkm_bus *bus)
48ae0b35	60	{
14caba44	61	struct nvkm_device *device = bus->subdev.device;
14caba44 BS	62	nvkm_wr32(device, 0x001100, 0xffffffff);
14caba44 BS	63	nvkm_wr32(device, 0x001140, 0x00000111);
48ae0b35 BS	64	}
48ae0b35 BS	65
bb23f9d7 BS	66	static const struct nvkm_bus_func
	67	nv04_bus = {
	68	.init = nv04_bus_init,
	69	.intr = nv04_bus_intr,
	70	};
	71
48ae0b35	72	int
bb23f9d7	73	nv04_bus_new(struct nvkm_device device, int index, struct nvkm_bus *pbus)
a10220bb	74	{
bb23f9d7	75	return nvkm_bus_new_(&nv04_bus, device, index, pbus);
a10220bb	76	}