[mirror_ubuntu-focal-kernel.git] / drivers / gpu / drm / nouveau / nvkm / subdev / i2c / padgm204.c

/*
 * Copyright 2014 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
 */
#include "pad.h"
#include "aux.h"
#include "bus.h"

static void
gm204_i2c_pad_mode(struct nvkm_i2c_pad *pad, enum nvkm_i2c_pad_mode mode)
{
	struct nvkm_subdev *subdev = &pad->i2c->subdev;
	struct nvkm_device *device = subdev->device;
	const u32 base = (pad->id - NVKM_I2C_PAD_HYBRID(0)) * 0x50;

	switch (mode) {
	case NVKM_I2C_PAD_OFF:
		nvkm_mask(device, 0x00d97c + base, 0x00000001, 0x00000001);
		break;
	case NVKM_I2C_PAD_I2C:
		nvkm_mask(device, 0x00d970 + base, 0x0000c003, 0x0000c001);
		nvkm_mask(device, 0x00d97c + base, 0x00000001, 0x00000000);
		break;
	case NVKM_I2C_PAD_AUX:
		nvkm_mask(device, 0x00d970 + base, 0x0000c003, 0x00000002);
		nvkm_mask(device, 0x00d97c + base, 0x00000001, 0x00000000);
		break;
	default:
		WARN_ON(1);
		break;
	}
}

static const struct nvkm_i2c_pad_func
gm204_i2c_pad_s_func = {
	.bus_new_4 = gf119_i2c_bus_new,
	.aux_new_6 = gm204_i2c_aux_new,
	.mode = gm204_i2c_pad_mode,
};

int
gm204_i2c_pad_s_new(struct nvkm_i2c *i2c, int id, struct nvkm_i2c_pad **ppad)
{
	return nvkm_i2c_pad_new_(&gm204_i2c_pad_s_func, i2c, id, ppad);
}

static const struct nvkm_i2c_pad_func
gm204_i2c_pad_x_func = {
	.bus_new_4 = gf119_i2c_bus_new,
	.aux_new_6 = gm204_i2c_aux_new,
};

int
gm204_i2c_pad_x_new(struct nvkm_i2c *i2c, int id, struct nvkm_i2c_pad **ppad)
{
	return nvkm_i2c_pad_new_(&gm204_i2c_pad_x_func, i2c, id, ppad);
}
Commit	Line	Data
f105aa37 BS	1	/*
	2	* Copyright 2014 Red Hat Inc.
	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: Ben Skeggs
	23	*/
f105aa37	24	#include "pad.h"
2aa5eac5 BS	25	#include "aux.h"
2aa5eac5 BS	26	#include "bus.h"
f105aa37	27
2aa5eac5 BS	28	static void
2aa5eac5 BS	29	gm204_i2c_pad_mode(struct nvkm_i2c_pad *pad, enum nvkm_i2c_pad_mode mode)
f105aa37	30	{
2aa5eac5 BS	31	struct nvkm_subdev *subdev = &pad->i2c->subdev;
	32	struct nvkm_device *device = subdev->device;
	33	const u32 base = (pad->id - NVKM_I2C_PAD_HYBRID(0)) * 0x50;
f105aa37	34
2aa5eac5 BS	35	switch (mode) {
	36	case NVKM_I2C_PAD_OFF:
	37	nvkm_mask(device, 0x00d97c + base, 0x00000001, 0x00000001);
	38	break;
	39	case NVKM_I2C_PAD_I2C:
	40	nvkm_mask(device, 0x00d970 + base, 0x0000c003, 0x0000c001);
	41	nvkm_mask(device, 0x00d97c + base, 0x00000001, 0x00000000);
	42	break;
	43	case NVKM_I2C_PAD_AUX:
	44	nvkm_mask(device, 0x00d970 + base, 0x0000c003, 0x00000002);
	45	nvkm_mask(device, 0x00d97c + base, 0x00000001, 0x00000000);
f105aa37	46	break;
f105aa37	47	default:
2aa5eac5	48	WARN_ON(1);
f105aa37 BS	49	break;
f105aa37 BS	50	}
f105aa37 BS	51	}
f105aa37 BS	52
2aa5eac5 BS	53	static const struct nvkm_i2c_pad_func
	54	gm204_i2c_pad_s_func = {
	55	.bus_new_4 = gf119_i2c_bus_new,
	56	.aux_new_6 = gm204_i2c_aux_new,
	57	.mode = gm204_i2c_pad_mode,
	58	};
f105aa37	59
2aa5eac5 BS	60	int
	61	gm204_i2c_pad_s_new(struct nvkm_i2c i2c, int id, struct nvkm_i2c_pad *ppad)
	62	{
	63	return nvkm_i2c_pad_new_(&gm204_i2c_pad_s_func, i2c, id, ppad);
f105aa37 BS	64	}
f105aa37 BS	65
2aa5eac5 BS	66	static const struct nvkm_i2c_pad_func
	67	gm204_i2c_pad_x_func = {
	68	.bus_new_4 = gf119_i2c_bus_new,
	69	.aux_new_6 = gm204_i2c_aux_new,
f105aa37	70	};
2aa5eac5 BS	71
	72	int
	73	gm204_i2c_pad_x_new(struct nvkm_i2c i2c, int id, struct nvkm_i2c_pad *ppad)
	74	{
	75	return nvkm_i2c_pad_new_(&gm204_i2c_pad_x_func, i2c, id, ppad);
	76	}