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/*
* Copyright 2012 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 "priv.h"
#include "pad.h"
void
g94_aux_stat(struct nvkm_i2c *i2c, u32 *hi, u32 *lo, u32 *rq, u32 *tx)
{
struct nvkm_device *device = i2c->subdev.device;
u32 intr = nvkm_rd32(device, 0x00e06c);
u32 stat = nvkm_rd32(device, 0x00e068) & intr, i;
for (i = 0, *hi = *lo = *rq = *tx = 0; i < 8; i++) {
if ((stat & (1 << (i * 4)))) *hi |= 1 << i;
if ((stat & (2 << (i * 4)))) *lo |= 1 << i;
if ((stat & (4 << (i * 4)))) *rq |= 1 << i;
if ((stat & (8 << (i * 4)))) *tx |= 1 << i;
}
nvkm_wr32(device, 0x00e06c, intr);
}
void
g94_aux_mask(struct nvkm_i2c *i2c, u32 type, u32 mask, u32 data)
{
struct nvkm_device *device = i2c->subdev.device;
u32 temp = nvkm_rd32(device, 0x00e068), i;
for (i = 0; i < 8; i++) {
if (mask & (1 << i)) {
if (!(data & (1 << i))) {
temp &= ~(type << (i * 4));
continue;
}
temp |= type << (i * 4);
}
}
nvkm_wr32(device, 0x00e068, temp);
}
static const struct nvkm_i2c_func
g94_i2c = {
.pad_x_new = g94_i2c_pad_x_new,
.pad_s_new = g94_i2c_pad_s_new,
.aux = 4,
.aux_stat = g94_aux_stat,
.aux_mask = g94_aux_mask,
};
int
g94_i2c_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
struct nvkm_i2c **pi2c)
{
return nvkm_i2c_new_(&g94_i2c, device, type, inst, pi2c);
}
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