Skip to content

Commit

Permalink
drm/radeon/kms: initial radeon displayport porting
Browse files Browse the repository at this point in the history 
This is enough to retrieve EDID and DPCP.

Signed-off-by: Dave Airlie <airlied@redhat.com>
  • Loading branch information
Dave Airlie committed Dec 8, 2009
1 parent d904ef9 commit 746c1aa
Show file tree
Hide file tree
Showing 9 changed files with 500 additions and 24 deletions.
2 changes: 1 addition & 1 deletion drivers/gpu/drm/radeon/Makefile
View file
Original file line number Diff line number Diff line change
Expand Up @@ -49,7 +49,7 @@ radeon-y += radeon_device.o radeon_kms.o \
radeon_cs.o radeon_bios.o radeon_benchmark.o r100.o r300.o r420.o \
rs400.o rs600.o rs690.o rv515.o r520.o r600.o rv770.o radeon_test.o \
r200.o radeon_legacy_tv.o r600_cs.o r600_blit.o r600_blit_shaders.o \
r600_blit_kms.o radeon_pm.o
r600_blit_kms.o radeon_pm.o atombios_dp.o

radeon-$(CONFIG_COMPAT) += radeon_ioc32.o

Expand Down
275 changes: 275 additions & 0 deletions drivers/gpu/drm/radeon/atombios_dp.c
View file
Original file line number Diff line number Diff line change
@@ -0,0 +1,275 @@
/*
* 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

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->i2c_id;
args.ucDelay = delay;

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->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;
}

int 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;
}

int 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->uc_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_getdpcp(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_DPCP_REV, 0, 8, msg);
if (ret) {
memcpy(radeon_dig_connector->dpcp, msg, 8);
{
int i;
printk("DPCP: ");
for (i = 0; i < 8; i++)
printk("%02x ", msg[i]);
printk("\n");
}
}
radeon_dig_connector->dpcp[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->dpcp[0] >= 0x11) {
radeon_dp_aux_native_write(radeon_connector, 0x600, 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;
}
17 changes: 9 additions & 8 deletions drivers/gpu/drm/radeon/radeon_atombios.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -47,7 +47,7 @@ radeon_add_atom_connector(struct drm_device *dev,
int connector_type,
struct radeon_i2c_bus_rec *i2c_bus,
bool linkb, uint32_t igp_lane_info,
uint16_t connector_object_id);
uint16_t connector_object_id, uint8_t uc_i2c_id);

/* from radeon_legacy_encoder.c */
extern void
Expand All @@ -60,8 +60,8 @@ union atom_supported_devices {
struct _ATOM_SUPPORTED_DEVICES_INFO_2d1 info_2d1;
};

static inline struct radeon_i2c_bus_rec radeon_lookup_gpio(struct drm_device
*dev, uint8_t id)
static inline struct radeon_i2c_bus_rec radeon_lookup_gpio(struct drm_device *dev,
uint8_t id)
{
struct radeon_device *rdev = dev->dev_private;
struct atom_context *ctx = rdev->mode_info.atom_context;
Expand Down Expand Up @@ -276,7 +276,7 @@ bool radeon_get_atom_connector_info_from_object_table(struct drm_device *dev)
uint16_t igp_lane_info, conn_id, connector_object_id;
bool linkb;
struct radeon_i2c_bus_rec ddc_bus;

ATOM_I2C_ID_CONFIG_ACCESS i2c_id;
atom_parse_data_header(ctx, index, &size, &frev, &crev, &data_offset);

if (data_offset == 0)
Expand All @@ -302,7 +302,7 @@ bool radeon_get_atom_connector_info_from_object_table(struct drm_device *dev)
path = (ATOM_DISPLAY_OBJECT_PATH *) addr;
path_size += le16_to_cpu(path->usSize);
linkb = false;

i2c_id.ucAccess = 0;
if (device_support & le16_to_cpu(path->usDeviceTag)) {
uint8_t con_obj_id, con_obj_num, con_obj_type;

Expand Down Expand Up @@ -420,7 +420,7 @@ bool radeon_get_atom_connector_info_from_object_table(struct drm_device *dev)
asObjects[j].
usRecordOffset));
ATOM_I2C_RECORD *i2c_record;

while (record->ucRecordType > 0
&& record->
ucRecordType <=
Expand All @@ -431,6 +431,7 @@ bool radeon_get_atom_connector_info_from_object_table(struct drm_device *dev)
i2c_record =
(ATOM_I2C_RECORD
*) record;
i2c_id.sbfAccess = i2c_record->sucI2cId;
line_mux =
i2c_record->
sucI2cId.
Expand Down Expand Up @@ -473,7 +474,7 @@ bool radeon_get_atom_connector_info_from_object_table(struct drm_device *dev)
usDeviceTag),
connector_type, &ddc_bus,
linkb, igp_lane_info,
connector_object_id);
connector_object_id, i2c_id.ucAccess);

}
}
Expand Down Expand Up @@ -692,7 +693,7 @@ bool radeon_get_atom_connector_info_from_supported_devices_table(struct
connector_type,
&bios_connectors[i].ddc_bus,
false, 0,
connector_object_id);
connector_object_id, 0);
}
}

Expand Down
Loading

0 comments on commit 746c1aa

Please sign in to comment.