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1/*2 * Copyright 2012 Red Hat Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * 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 OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 * Authors: Ben Skeggs23 */24#include "priv.h"25#include "pad.h"26 27void28g94_aux_stat(struct nvkm_i2c *i2c, u32 *hi, u32 *lo, u32 *rq, u32 *tx)29{30 struct nvkm_device *device = i2c->subdev.device;31 u32 intr = nvkm_rd32(device, 0x00e06c);32 u32 stat = nvkm_rd32(device, 0x00e068) & intr, i;33 for (i = 0, *hi = *lo = *rq = *tx = 0; i < 8; i++) {34 if ((stat & (1 << (i * 4)))) *hi |= 1 << i;35 if ((stat & (2 << (i * 4)))) *lo |= 1 << i;36 if ((stat & (4 << (i * 4)))) *rq |= 1 << i;37 if ((stat & (8 << (i * 4)))) *tx |= 1 << i;38 }39 nvkm_wr32(device, 0x00e06c, intr);40}41 42void43g94_aux_mask(struct nvkm_i2c *i2c, u32 type, u32 mask, u32 data)44{45 struct nvkm_device *device = i2c->subdev.device;46 u32 temp = nvkm_rd32(device, 0x00e068), i;47 for (i = 0; i < 8; i++) {48 if (mask & (1 << i)) {49 if (!(data & (1 << i))) {50 temp &= ~(type << (i * 4));51 continue;52 }53 temp |= type << (i * 4);54 }55 }56 nvkm_wr32(device, 0x00e068, temp);57}58 59static const struct nvkm_i2c_func60g94_i2c = {61 .pad_x_new = g94_i2c_pad_x_new,62 .pad_s_new = g94_i2c_pad_s_new,63 .aux = 4,64 .aux_stat = g94_aux_stat,65 .aux_mask = g94_aux_mask,66};67 68int69g94_i2c_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,70 struct nvkm_i2c **pi2c)71{72 return nvkm_i2c_new_(&g94_i2c, device, type, inst, pi2c);73}74