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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 "ior.h"
#include <subdev/i2c.h>
#include <subdev/timer.h>
static int
nv50_pior_dp_links(struct nvkm_ior *pior, struct nvkm_i2c_aux *aux)
{
int ret = nvkm_i2c_aux_lnk_ctl(aux, pior->dp.nr, pior->dp.bw,
pior->dp.ef);
if (ret)
return ret;
return 1;
}
static void
nv50_pior_power_wait(struct nvkm_device *device, u32 poff)
{
nvkm_msec(device, 2000,
if (!(nvkm_rd32(device, 0x61e004 + poff) & 0x80000000))
break;
);
}
static void
nv50_pior_power(struct nvkm_ior *pior, bool normal, bool pu,
bool data, bool vsync, bool hsync)
{
struct nvkm_device *device = pior->disp->engine.subdev.device;
const u32 poff = nv50_ior_base(pior);
const u32 shift = normal ? 0 : 16;
const u32 state = 0x80000000 | (0x00000001 * !!pu) << shift;
const u32 field = 0x80000000 | (0x00000101 << shift);
nv50_pior_power_wait(device, poff);
nvkm_mask(device, 0x61e004 + poff, field, state);
nv50_pior_power_wait(device, poff);
}
static void
nv50_pior_state(struct nvkm_ior *pior, struct nvkm_ior_state *state)
{
struct nvkm_device *device = pior->disp->engine.subdev.device;
const u32 coff = pior->id * 8 + (state == &pior->arm) * 4;
u32 ctrl = nvkm_rd32(device, 0x610b80 + coff);
state->proto_evo = (ctrl & 0x00000f00) >> 8;
state->rgdiv = 1;
switch (state->proto_evo) {
case 0: state->proto = TMDS; break;
default:
state->proto = UNKNOWN;
break;
}
state->head = ctrl & 0x00000003;
}
static const struct nvkm_ior_func
nv50_pior = {
.state = nv50_pior_state,
.power = nv50_pior_power,
.dp = {
.links = nv50_pior_dp_links,
},
};
int
nv50_pior_new(struct nvkm_disp *disp, int id)
{
return nvkm_ior_new_(&nv50_pior, disp, PIOR, id);
}
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