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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, int index, struct nvkm_i2c **pi2c)
- {
- return nvkm_i2c_new_(&g94_i2c, device, index, pi2c);
- }
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