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b9ec14246d
The namespace of NVKM is being changed to nvkm_ instead of nouveau_, which will be used for the DRM part of the driver. This is being done in order to make it very clear as to what part of the driver a given symbol belongs to, and as a minor step towards splitting the DRM driver out to be able to stand on its own (for virt). Because there's already a large amount of churn here anyway, this is as good a time as any to also switch to NVIDIA's device and chipset naming to ease collaboration with them. A comparison of objdump disassemblies proves no code changes. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
114 lines
2.7 KiB
C
114 lines
2.7 KiB
C
/*
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* Copyright 2009 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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int
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nv_rdaux(struct nvkm_i2c_port *port, u32 addr, u8 *data, u8 size)
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{
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struct nvkm_i2c *i2c = nvkm_i2c(port);
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if (port->func->aux) {
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int ret = i2c->acquire(port, 0);
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if (ret == 0) {
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ret = port->func->aux(port, true, 9, addr, data, size);
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i2c->release(port);
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}
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return ret;
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}
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return -ENODEV;
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}
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int
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nv_wraux(struct nvkm_i2c_port *port, u32 addr, u8 *data, u8 size)
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{
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struct nvkm_i2c *i2c = nvkm_i2c(port);
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if (port->func->aux) {
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int ret = i2c->acquire(port, 0);
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if (ret == 0) {
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ret = port->func->aux(port, true, 8, addr, data, size);
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i2c->release(port);
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}
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return ret;
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}
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return -ENODEV;
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}
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static int
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aux_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
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{
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struct nvkm_i2c_port *port = adap->algo_data;
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struct nvkm_i2c *i2c = nvkm_i2c(port);
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struct i2c_msg *msg = msgs;
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int ret, mcnt = num;
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if (!port->func->aux)
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return -ENODEV;
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ret = i2c->acquire(port, 0);
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if (ret)
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return ret;
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while (mcnt--) {
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u8 remaining = msg->len;
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u8 *ptr = msg->buf;
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while (remaining) {
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u8 cnt = (remaining > 16) ? 16 : remaining;
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u8 cmd;
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if (msg->flags & I2C_M_RD)
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cmd = 1;
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else
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cmd = 0;
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if (mcnt || remaining > 16)
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cmd |= 4; /* MOT */
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ret = port->func->aux(port, true, cmd, msg->addr, ptr, cnt);
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if (ret < 0) {
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i2c->release(port);
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return ret;
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}
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ptr += cnt;
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remaining -= cnt;
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}
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msg++;
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}
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i2c->release(port);
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return num;
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}
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static u32
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aux_func(struct i2c_adapter *adap)
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{
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return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
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}
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const struct i2c_algorithm nvkm_i2c_aux_algo = {
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.master_xfer = aux_xfer,
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.functionality = aux_func
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};
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