blob: 76eb5c8a7016abb5f9abbfb83f849aad627f0f3e [file] [log] [blame]
/*
* Copyright 2007-8 Advanced Micro Devices, Inc.
* Copyright 2008 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: Dave Airlie
* Alex Deucher
*/
#include "drmP.h"
#include "radeon_drm.h"
#include "radeon.h"
#include "atom.h"
#include "atom-bits.h"
#include "drm_dp_helper.h"
#define DP_LINK_STATUS_SIZE 6
/* move these to drm_dp_helper.c/h */
static const int dp_clocks[] = {
54000, // 1 lane, 1.62 Ghz
90000, // 1 lane, 2.70 Ghz
108000, // 2 lane, 1.62 Ghz
180000, // 2 lane, 2.70 Ghz
216000, // 4 lane, 1.62 Ghz
360000, // 4 lane, 2.70 Ghz
};
static const int num_dp_clocks = sizeof(dp_clocks) / sizeof(int);
int dp_lanes_for_mode_clock(int max_link_bw, int mode_clock)
{
int i;
switch (max_link_bw) {
case DP_LINK_BW_1_62:
default:
for (i = 0; i < num_dp_clocks; i++) {
if (i % 2)
continue;
if (dp_clocks[i] > mode_clock) {
if (i < 2)
return 1;
else if (i < 4)
return 2;
else
return 4;
}
}
break;
case DP_LINK_BW_2_7:
for (i = 0; i < num_dp_clocks; i++) {
if (dp_clocks[i] > mode_clock) {
if (i < 2)
return 1;
else if (i < 4)
return 2;
else
return 4;
}
}
break;
}
return 0;
}
int dp_link_clock_for_mode_clock(int max_link_bw, int mode_clock)
{
int i;
switch (max_link_bw) {
case DP_LINK_BW_1_62:
default:
return 162000;
break;
case DP_LINK_BW_2_7:
for (i = 0; i < num_dp_clocks; i++) {
if (dp_clocks[i] > mode_clock)
return (i % 2) ? 270000 : 162000;
}
}
return 0;
}
bool radeon_process_aux_ch(struct radeon_i2c_chan *chan, u8 *req_bytes,
int num_bytes, u8 *read_byte,
u8 read_buf_len, u8 delay)
{
struct drm_device *dev = chan->dev;
struct radeon_device *rdev = dev->dev_private;
PROCESS_AUX_CHANNEL_TRANSACTION_PS_ALLOCATION args;
int index = GetIndexIntoMasterTable(COMMAND, ProcessAuxChannelTransaction);
unsigned char *base;
memset(&args, 0, sizeof(args));
base = (unsigned char *)rdev->mode_info.atom_context->scratch;
memcpy(base, req_bytes, num_bytes);
args.lpAuxRequest = 0;
args.lpDataOut = 16;
args.ucDataOutLen = 0;
args.ucChannelID = chan->rec.i2c_id;
args.ucDelay = delay / 10;
atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
if (args.ucReplyStatus) {
DRM_ERROR("failed to get auxch %02x%02x %02x %02x 0x%02x %02x\n",
req_bytes[1], req_bytes[0], req_bytes[2], req_bytes[3],
chan->rec.i2c_id, args.ucReplyStatus);
return false;
}
if (args.ucDataOutLen && read_byte && read_buf_len) {
if (read_buf_len < args.ucDataOutLen) {
DRM_ERROR("Buffer to small for return answer %d %d\n",
read_buf_len, args.ucDataOutLen);
return false;
}
{
int len = min(read_buf_len, args.ucDataOutLen);
memcpy(read_byte, base + 16, len);
}
}
return true;
}
static u8 radeon_dp_encoder_service(struct radeon_device *rdev, int action, int dp_clock,
uint8_t ucconfig, uint8_t lane_num)
{
DP_ENCODER_SERVICE_PARAMETERS args;
int index = GetIndexIntoMasterTable(COMMAND, DPEncoderService);
memset(&args, 0, sizeof(args));
args.ucLinkClock = dp_clock / 10;
args.ucConfig = ucconfig;
args.ucAction = action;
args.ucLaneNum = lane_num;
args.ucStatus = 0;
atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
return args.ucStatus;
}
u8 radeon_dp_getsinktype(struct radeon_connector *radeon_connector)
{
struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv;
struct drm_device *dev = radeon_connector->base.dev;
struct radeon_device *rdev = dev->dev_private;
return radeon_dp_encoder_service(rdev, ATOM_DP_ACTION_GET_SINK_TYPE, 0,
radeon_dig_connector->dp_i2c_bus->rec.i2c_id, 0);
}
union dig_transmitter_control {
DIG_TRANSMITTER_CONTROL_PS_ALLOCATION v1;
DIG_TRANSMITTER_CONTROL_PARAMETERS_V2 v2;
};
bool radeon_dp_aux_native_write(struct radeon_connector *radeon_connector, uint16_t address,
uint8_t send_bytes, uint8_t *send)
{
struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv;
struct drm_device *dev = radeon_connector->base.dev;
struct radeon_device *rdev = dev->dev_private;
u8 msg[20];
u8 msg_len, dp_msg_len;
bool ret;
dp_msg_len = 4;
msg[0] = address;
msg[1] = address >> 8;
msg[2] = AUX_NATIVE_WRITE << 4;
dp_msg_len += send_bytes;
msg[3] = (dp_msg_len << 4) | (send_bytes - 1);
if (send_bytes > 16)
return false;
memcpy(&msg[4], send, send_bytes);
msg_len = 4 + send_bytes;
ret = radeon_process_aux_ch(radeon_dig_connector->dp_i2c_bus, msg, msg_len, NULL, 0, 0);
return ret;
}
bool radeon_dp_aux_native_read(struct radeon_connector *radeon_connector, uint16_t address,
uint8_t delay, uint8_t expected_bytes,
uint8_t *read_p)
{
struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv;
struct drm_device *dev = radeon_connector->base.dev;
struct radeon_device *rdev = dev->dev_private;
u8 msg[20];
u8 msg_len, dp_msg_len;
bool ret = false;
msg_len = 4;
dp_msg_len = 4;
msg[0] = address;
msg[1] = address >> 8;
msg[2] = AUX_NATIVE_READ << 4;
msg[3] = (dp_msg_len) << 4;
msg[3] |= expected_bytes - 1;
ret = radeon_process_aux_ch(radeon_dig_connector->dp_i2c_bus, msg, msg_len, read_p, expected_bytes, delay);
return ret;
}
void radeon_dp_getdpcd(struct radeon_connector *radeon_connector)
{
struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv;
u8 msg[25];
int ret;
ret = radeon_dp_aux_native_read(radeon_connector, DP_DPCD_REV, 0, 8, msg);
if (ret) {
memcpy(radeon_dig_connector->dpcd, msg, 8);
{
int i;
printk("DPCD: ");
for (i = 0; i < 8; i++)
printk("%02x ", msg[i]);
printk("\n");
}
}
radeon_dig_connector->dpcd[0] = 0;
return;
}
static bool atom_dp_get_link_status(struct radeon_connector *radeon_connector,
u8 link_status[DP_LINK_STATUS_SIZE])
{
int ret;
ret = radeon_dp_aux_native_read(radeon_connector, DP_LANE0_1_STATUS, 100,
DP_LINK_STATUS_SIZE, link_status);
if (!ret) {
DRM_ERROR("displayport link status failed\n");
return false;
}
DRM_INFO("link status %02x %02x %02x %02x %02x %02x\n",
link_status[0], link_status[1], link_status[2],
link_status[3], link_status[4], link_status[5]);
return true;
}
static void dp_set_power(struct radeon_connector *radeon_connector, u8 power_state)
{
struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv;
if (radeon_dig_connector->dpcd[0] >= 0x11) {
radeon_dp_aux_native_write(radeon_connector, DP_SET_POWER, 1,
&power_state);
}
}
static void dp_update_dpvs_emph(struct radeon_connector *radeon_connector,
u8 train_set[4])
{
struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv;
// radeon_dp_digtransmitter_setup_vsemph();
radeon_dp_aux_native_write(radeon_connector, DP_TRAINING_LANE0_SET,
0/* lc */, train_set);
}
static void dp_set_training(struct radeon_connector *radeon_connector,
u8 training)
{
radeon_dp_aux_native_write(radeon_connector, DP_TRAINING_PATTERN_SET,
1, &training);
}
int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,
uint8_t write_byte, uint8_t *read_byte)
{
struct i2c_algo_dp_aux_data *algo_data = adapter->algo_data;
struct radeon_i2c_chan *auxch = (struct radeon_i2c_chan *)adapter;
int ret = 0;
uint16_t address = algo_data->address;
uint8_t msg[5];
uint8_t reply[2];
int msg_len, dp_msg_len;
int reply_bytes;
/* Set up the command byte */
if (mode & MODE_I2C_READ)
msg[2] = AUX_I2C_READ << 4;
else
msg[2] = AUX_I2C_WRITE << 4;
if (!(mode & MODE_I2C_STOP))
msg[2] |= AUX_I2C_MOT << 4;
msg[0] = address;
msg[1] = address >> 8;
reply_bytes = 1;
msg_len = 4;
dp_msg_len = 3;
switch (mode) {
case MODE_I2C_WRITE:
msg[4] = write_byte;
msg_len++;
dp_msg_len += 2;
break;
case MODE_I2C_READ:
dp_msg_len += 1;
break;
default:
break;
}
msg[3] = (dp_msg_len) << 4;
ret = radeon_process_aux_ch(auxch, msg, msg_len, reply, reply_bytes, 0);
if (ret) {
if (read_byte)
*read_byte = reply[0];
return reply_bytes;
}
return -EREMOTEIO;
}