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