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https://github.com/edk2-porting/linux-next.git
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109 lines
3.2 KiB
C
109 lines
3.2 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 "nv50.h"
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static int
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gf110_i2c_sense_scl(struct nvkm_i2c_port *base)
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{
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struct nvkm_i2c *i2c = (void *)nvkm_i2c(base);
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struct nvkm_device *device = i2c->subdev.device;
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struct nv50_i2c_port *port = (void *)base;
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return !!(nvkm_rd32(device, port->addr) & 0x00000010);
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}
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static int
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gf110_i2c_sense_sda(struct nvkm_i2c_port *base)
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{
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struct nvkm_i2c *i2c = (void *)nvkm_i2c(base);
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struct nvkm_device *device = i2c->subdev.device;
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struct nv50_i2c_port *port = (void *)base;
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return !!(nvkm_rd32(device, port->addr) & 0x00000020);
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}
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static const struct nvkm_i2c_func
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gf110_i2c_func = {
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.drive_scl = nv50_i2c_drive_scl,
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.drive_sda = nv50_i2c_drive_sda,
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.sense_scl = gf110_i2c_sense_scl,
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.sense_sda = gf110_i2c_sense_sda,
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};
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int
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gf110_i2c_port_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
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struct nvkm_oclass *oclass, void *data, u32 index,
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struct nvkm_object **pobject)
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{
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struct dcb_i2c_entry *info = data;
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struct nv50_i2c_port *port;
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int ret;
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ret = nvkm_i2c_port_create(parent, engine, oclass, index,
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&nvkm_i2c_bit_algo, &gf110_i2c_func, &port);
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*pobject = nv_object(port);
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if (ret)
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return ret;
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port->state = 0x00000007;
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port->addr = 0x00d014 + (info->drive * 0x20);
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return 0;
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}
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struct nvkm_oclass
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gf110_i2c_sclass[] = {
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{ .handle = NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_BIT),
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.ofuncs = &(struct nvkm_ofuncs) {
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.ctor = gf110_i2c_port_ctor,
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.dtor = _nvkm_i2c_port_dtor,
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.init = nv50_i2c_port_init,
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.fini = _nvkm_i2c_port_fini,
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},
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},
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{ .handle = NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_AUX),
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.ofuncs = &(struct nvkm_ofuncs) {
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.ctor = g94_aux_port_ctor,
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.dtor = _nvkm_i2c_port_dtor,
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.init = _nvkm_i2c_port_init,
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.fini = _nvkm_i2c_port_fini,
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},
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},
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{}
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};
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struct nvkm_oclass *
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gf110_i2c_oclass = &(struct nvkm_i2c_impl) {
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.base.handle = NV_SUBDEV(I2C, 0xd0),
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.base.ofuncs = &(struct nvkm_ofuncs) {
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.ctor = _nvkm_i2c_ctor,
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.dtor = _nvkm_i2c_dtor,
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.init = _nvkm_i2c_init,
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.fini = _nvkm_i2c_fini,
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},
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.sclass = gf110_i2c_sclass,
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.pad_x = &nv04_i2c_pad_oclass,
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.pad_s = &g94_i2c_pad_oclass,
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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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}.base;
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