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drm/radeon/kms: add support for DP modesetting

Browse source 
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2009-11-24 13:32:59 -05:00 committed by Dave Airlie
parent f92a8b6758
commit 5801ead6bd
6 changed files with 615 additions and 97 deletions
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25
drivers/gpu/drm/radeon/atom.c
View file

@ -1214,3 +1214,28 @@ void atom_parse_cmd_header(struct atom_context *ctx, int index, uint8_t * frev,
*crev = CU8(idx + 3);
return;
}
int atom_allocate_fb_scratch(struct atom_context *ctx)
{
int index = GetIndexIntoMasterTable(DATA, VRAM_UsageByFirmware);
uint16_t data_offset;
int usage_bytes;
struct _ATOM_VRAM_USAGE_BY_FIRMWARE *firmware_usage;
atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset);
firmware_usage = (struct _ATOM_VRAM_USAGE_BY_FIRMWARE *)(ctx->bios + data_offset);
DRM_DEBUG("atom firmware requested %08x %dkb\n",
firmware_usage->asFirmwareVramReserveInfo[0].ulStartAddrUsedByFirmware,
firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb);
usage_bytes = firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb * 1024;
if (usage_bytes == 0)
usage_bytes = 20 * 1024;
/* allocate some scratch memory */
ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL);
if (!ctx->scratch)
return -ENOMEM;
return 0;
}

569
drivers/gpu/drm/radeon/atombios_dp.c
View file

@ -31,9 +31,20 @@
#include "atom-bits.h"
#include "drm_dp_helper.h"
#define DP_LINK_STATUS_SIZE 6
/* move these to drm_dp_helper.c/h */
#define DP_LINK_CONFIGURATION_SIZE 9
#define DP_LINK_STATUS_SIZE 6
#define DP_DPCD_SIZE 8
static char *voltage_names[] = {
"0.4V", "0.6V", "0.8V", "1.2V"
};
static char *pre_emph_names[] = {
"0dB", "3.5dB", "6dB", "9.5dB"
};
static char *link_train_names[] = {
"pattern 1", "pattern 2", "idle", "off"
};
static const int dp_clocks[] = {
54000, // 1 lane, 1.62 Ghz
@ -46,9 +57,18 @@ static const int dp_clocks[] = {
static const int num_dp_clocks = sizeof(dp_clocks) / sizeof(int);
int dp_lanes_for_mode_clock(int max_link_bw, int mode_clock)
/* common helper functions */
static int dp_lanes_for_mode_clock(u8 dpcd[DP_DPCD_SIZE], int mode_clock)
{
int i;
u8 max_link_bw;
u8 max_lane_count;
if (!dpcd)
return 0;
max_link_bw = dpcd[DP_MAX_LINK_RATE];
max_lane_count = dpcd[DP_MAX_LANE_COUNT] & DP_MAX_LANE_COUNT_MASK;
switch (max_link_bw) {
case DP_LINK_BW_1_62:
@ -56,6 +76,19 @@ int dp_lanes_for_mode_clock(int max_link_bw, int mode_clock)
for (i = 0; i < num_dp_clocks; i++) {
if (i % 2)
continue;
switch (max_lane_count) {
case 1:
if (i > 1)
return 0;
break;
case 2:
if (i > 3)
return 0;
break;
case 4:
default:
break;
}
if (dp_clocks[i] > mode_clock) {
if (i < 2)
return 1;
@ -68,6 +101,19 @@ int dp_lanes_for_mode_clock(int max_link_bw, int mode_clock)
break;
case DP_LINK_BW_2_7:
for (i = 0; i < num_dp_clocks; i++) {
switch (max_lane_count) {
case 1:
if (i > 1)
return 0;
break;
case 2:
if (i > 3)
return 0;
break;
case 4:
default:
break;
}
if (dp_clocks[i] > mode_clock) {
if (i < 2)
return 1;
@ -83,17 +129,56 @@ int dp_lanes_for_mode_clock(int max_link_bw, int mode_clock)
return 0;
}
int dp_link_clock_for_mode_clock(int max_link_bw, int mode_clock)
static int dp_link_clock_for_mode_clock(u8 dpcd[DP_DPCD_SIZE], int mode_clock)
{
int i;
u8 max_link_bw;
u8 max_lane_count;
if (!dpcd)
return 0;
max_link_bw = dpcd[DP_MAX_LINK_RATE];
max_lane_count = dpcd[DP_MAX_LANE_COUNT] & DP_MAX_LANE_COUNT_MASK;
switch (max_link_bw) {
case DP_LINK_BW_1_62:
default:
for (i = 0; i < num_dp_clocks; i++) {
if (i % 2)
continue;
switch (max_lane_count) {
case 1:
if (i > 1)
return 0;
break;
case 2:
if (i > 3)
return 0;
break;
case 4:
default:
break;
}
if (dp_clocks[i] > mode_clock)
return 162000;
}
break;
case DP_LINK_BW_2_7:
for (i = 0; i < num_dp_clocks; i++) {
switch (max_lane_count) {
case 1:
if (i > 1)
return 0;
break;
case 2:
if (i > 3)
return 0;
break;
case 4:
default:
break;
}
if (dp_clocks[i] > mode_clock)
return (i % 2) ? 270000 : 162000;
}
@ -102,6 +187,145 @@ int dp_link_clock_for_mode_clock(int max_link_bw, int mode_clock)
return 0;
}
int dp_mode_valid(u8 dpcd[DP_DPCD_SIZE], int mode_clock)
{
int lanes = dp_lanes_for_mode_clock(dpcd, mode_clock);
int bw = dp_lanes_for_mode_clock(dpcd, mode_clock);
if ((lanes == 0) || (bw == 0))
return MODE_CLOCK_HIGH;
return MODE_OK;
}
static u8 dp_link_status(u8 link_status[DP_LINK_STATUS_SIZE], int r)
{
return link_status[r - DP_LANE0_1_STATUS];
}
static u8 dp_get_lane_status(u8 link_status[DP_LINK_STATUS_SIZE],
int lane)
{
int i = DP_LANE0_1_STATUS + (lane >> 1);
int s = (lane & 1) * 4;
u8 l = dp_link_status(link_status, i);
return (l >> s) & 0xf;
}
static bool dp_clock_recovery_ok(u8 link_status[DP_LINK_STATUS_SIZE],
int lane_count)
{
int lane;
u8 lane_status;
for (lane = 0; lane < lane_count; lane++) {
lane_status = dp_get_lane_status(link_status, lane);
if ((lane_status & DP_LANE_CR_DONE) == 0)
return false;
}
return true;
}
static bool dp_channel_eq_ok(u8 link_status[DP_LINK_STATUS_SIZE],
int lane_count)
{
u8 lane_align;
u8 lane_status;
int lane;
lane_align = dp_link_status(link_status,
DP_LANE_ALIGN_STATUS_UPDATED);
if ((lane_align & DP_INTERLANE_ALIGN_DONE) == 0)
return false;
for (lane = 0; lane < lane_count; lane++) {
lane_status = dp_get_lane_status(link_status, lane);
if ((lane_status & DP_CHANNEL_EQ_BITS) != DP_CHANNEL_EQ_BITS)
return false;
}
return true;
}
static u8 dp_get_adjust_request_voltage(uint8_t link_status[DP_LINK_STATUS_SIZE],
int lane)
{
int i = DP_ADJUST_REQUEST_LANE0_1 + (lane >> 1);
int s = ((lane & 1) ?
DP_ADJUST_VOLTAGE_SWING_LANE1_SHIFT :
DP_ADJUST_VOLTAGE_SWING_LANE0_SHIFT);
u8 l = dp_link_status(link_status, i);
return ((l >> s) & 0x3) << DP_TRAIN_VOLTAGE_SWING_SHIFT;
}
static u8 dp_get_adjust_request_pre_emphasis(uint8_t link_status[DP_LINK_STATUS_SIZE],
int lane)
{
int i = DP_ADJUST_REQUEST_LANE0_1 + (lane >> 1);
int s = ((lane & 1) ?
DP_ADJUST_PRE_EMPHASIS_LANE1_SHIFT :
DP_ADJUST_PRE_EMPHASIS_LANE0_SHIFT);
u8 l = dp_link_status(link_status, i);
return ((l >> s) & 0x3) << DP_TRAIN_PRE_EMPHASIS_SHIFT;
}
/* XXX fix me -- chip specific */
#define DP_VOLTAGE_MAX DP_TRAIN_VOLTAGE_SWING_1200
static u8 dp_pre_emphasis_max(u8 voltage_swing)
{
switch (voltage_swing & DP_TRAIN_VOLTAGE_SWING_MASK) {
case DP_TRAIN_VOLTAGE_SWING_400:
return DP_TRAIN_PRE_EMPHASIS_6;
case DP_TRAIN_VOLTAGE_SWING_600:
return DP_TRAIN_PRE_EMPHASIS_6;
case DP_TRAIN_VOLTAGE_SWING_800:
return DP_TRAIN_PRE_EMPHASIS_3_5;
case DP_TRAIN_VOLTAGE_SWING_1200:
default:
return DP_TRAIN_PRE_EMPHASIS_0;
}
}
static void dp_get_adjust_train(u8 link_status[DP_LINK_STATUS_SIZE],
int lane_count,
u8 train_set[4])
{
u8 v = 0;
u8 p = 0;
int lane;
for (lane = 0; lane < lane_count; lane++) {
u8 this_v = dp_get_adjust_request_voltage(link_status, lane);
u8 this_p = dp_get_adjust_request_pre_emphasis(link_status, lane);
DRM_INFO("requested signal parameters: lane %d voltage %s pre_emph %s\n",
lane,
voltage_names[this_v >> DP_TRAIN_VOLTAGE_SWING_SHIFT],
pre_emph_names[this_p >> DP_TRAIN_PRE_EMPHASIS_SHIFT]);
if (this_v > v)
v = this_v;
if (this_p > p)
p = this_p;
}
if (v >= DP_VOLTAGE_MAX)
v = DP_VOLTAGE_MAX | DP_TRAIN_MAX_SWING_REACHED;
if (p >= dp_pre_emphasis_max(v))
p = dp_pre_emphasis_max(v) | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED;
DRM_INFO("using signal parameters: voltage %s pre_emph %s\n",
voltage_names[(v & DP_TRAIN_VOLTAGE_SWING_MASK) >> DP_TRAIN_VOLTAGE_SWING_SHIFT],
pre_emph_names[(p & DP_TRAIN_PRE_EMPHASIS_MASK) >> DP_TRAIN_PRE_EMPHASIS_SHIFT]);
for (lane = 0; lane < 4; lane++)
train_set[lane] = v | p;
}
/* radeon aux chan functions */
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)
@ -147,6 +371,51 @@ bool radeon_process_aux_ch(struct radeon_i2c_chan *chan, u8 *req_bytes,
return true;
}
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 *dig_connector = radeon_connector->con_priv;
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(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 *dig_connector = radeon_connector->con_priv;
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(dig_connector->dp_i2c_bus, msg, msg_len, read_p, expected_bytes, delay);
return ret;
}
/* radeon dp functions */
static u8 radeon_dp_encoder_service(struct radeon_device *rdev, int action, int dp_clock,
uint8_t ucconfig, uint8_t lane_num)
{
@ -166,76 +435,23 @@ static u8 radeon_dp_encoder_service(struct radeon_device *rdev, int action, int
u8 radeon_dp_getsinktype(struct radeon_connector *radeon_connector)
{
struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv;
struct radeon_connector_atom_dig *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;
dig_connector->dp_i2c_bus->rec.i2c_id, 0);
}
void radeon_dp_getdpcd(struct radeon_connector *radeon_connector)
{
struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv;
struct radeon_connector_atom_dig *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);
memcpy(dig_connector->dpcd, msg, 8);
{
int i;
printk("DPCD: ");
@ -244,10 +460,38 @@ void radeon_dp_getdpcd(struct radeon_connector *radeon_connector)
printk("\n");
}
}
radeon_dig_connector->dpcd[0] = 0;
dig_connector->dpcd[0] = 0;
return;
}
void radeon_dp_set_link_config(struct drm_connector *connector,
struct drm_display_mode *mode)
{
struct radeon_connector *radeon_connector;
struct radeon_connector_atom_dig *dig_connector;
if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort)
return;
radeon_connector = to_radeon_connector(connector);
if (!radeon_connector->con_priv)
return;
dig_connector = radeon_connector->con_priv;
dig_connector->dp_clock =
dp_link_clock_for_mode_clock(dig_connector->dpcd, mode->clock);
dig_connector->dp_lane_count =
dp_lanes_for_mode_clock(dig_connector->dpcd, mode->clock);
}
int radeon_dp_mode_valid_helper(struct radeon_connector *radeon_connector,
struct drm_display_mode *mode)
{
struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv;
return dp_mode_valid(dig_connector->dpcd, mode->clock);
}
static bool atom_dp_get_link_status(struct radeon_connector *radeon_connector,
u8 link_status[DP_LINK_STATUS_SIZE])
{
@ -267,21 +511,41 @@ static bool atom_dp_get_link_status(struct radeon_connector *radeon_connector,
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) {
struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv;
if (dig_connector->dpcd[0] >= 0x11) {
radeon_dp_aux_native_write(radeon_connector, DP_SET_POWER, 1,
&power_state);
}
}
static void dp_set_downspread(struct radeon_connector *radeon_connector, u8 downspread)
{
radeon_dp_aux_native_write(radeon_connector, DP_DOWNSPREAD_CTRL, 1,
&downspread);
}
static void dp_set_link_bw_lanes(struct radeon_connector *radeon_connector,
u8 link_configuration[DP_LINK_CONFIGURATION_SIZE])
{
radeon_dp_aux_native_write(radeon_connector, DP_LINK_BW_SET, 2,
link_configuration);
}
static void dp_update_dpvs_emph(struct radeon_connector *radeon_connector,
struct drm_encoder *encoder,
u8 train_set[4])
{
struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv;
struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv;
int i;
for (i = 0; i < dig_connector->dp_lane_count; i++)
atombios_dig_transmitter_setup(encoder,
ATOM_TRANSMITTER_ACTION_SETUP_VSEMPH,
i, train_set[i]);
// radeon_dp_digtransmitter_setup_vsemph();
radeon_dp_aux_native_write(radeon_connector, DP_TRAINING_LANE0_SET,
0/* lc */, train_set);
dig_connector->dp_lane_count, train_set);
}
static void dp_set_training(struct radeon_connector *radeon_connector,
@ -291,6 +555,176 @@ static void dp_set_training(struct radeon_connector *radeon_connector,
1, &training);
}
void dp_link_train(struct drm_encoder *encoder,
struct drm_connector *connector)
{
struct drm_device *dev = encoder->dev;
struct radeon_device *rdev = dev->dev_private;
struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
struct radeon_encoder_atom_dig *dig;
struct radeon_connector *radeon_connector;
struct radeon_connector_atom_dig *dig_connector;
int enc_id = 0;
bool clock_recovery, channel_eq;
u8 link_status[DP_LINK_STATUS_SIZE];
u8 link_configuration[DP_LINK_CONFIGURATION_SIZE];
u8 tries, voltage;
u8 train_set[4];
int i;
if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort)
return;
if (!radeon_encoder->enc_priv)
return;
dig = radeon_encoder->enc_priv;
radeon_connector = to_radeon_connector(connector);
if (!radeon_connector->con_priv)
return;
dig_connector = radeon_connector->con_priv;
if (ASIC_IS_DCE32(rdev)) {
if (dig->dig_block)
enc_id |= ATOM_DP_CONFIG_DIG2_ENCODER;
else
enc_id |= ATOM_DP_CONFIG_DIG1_ENCODER;
if (dig_connector->linkb)
enc_id |= ATOM_DP_CONFIG_LINK_B;
else
enc_id |= ATOM_DP_CONFIG_LINK_A;
} else {
if (dig_connector->linkb)
enc_id |= ATOM_DP_CONFIG_DIG2_ENCODER | ATOM_DP_CONFIG_LINK_B;
else
enc_id |= ATOM_DP_CONFIG_DIG1_ENCODER | ATOM_DP_CONFIG_LINK_A;
}
memset(link_configuration, 0, DP_LINK_CONFIGURATION_SIZE);
if (dig_connector->dp_clock == 270000)
link_configuration[0] = DP_LINK_BW_2_7;
else
link_configuration[0] = DP_LINK_BW_1_62;
link_configuration[1] = dig_connector->dp_lane_count;
if (dig_connector->dpcd[0] >= 0x11)
link_configuration[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN;
/* power up the sink */
dp_set_power(radeon_connector, DP_SET_POWER_D0);
/* disable the training pattern on the sink */
dp_set_training(radeon_connector, DP_TRAINING_PATTERN_DISABLE);
/* set link bw and lanes on the sink */
dp_set_link_bw_lanes(radeon_connector, link_configuration);
/* disable downspread on the sink */
dp_set_downspread(radeon_connector, 0);
/* start training on the source */
radeon_dp_encoder_service(rdev, ATOM_DP_ACTION_TRAINING_START,
dig_connector->dp_clock, enc_id, 0);
/* set training pattern 1 on the source */
radeon_dp_encoder_service(rdev, ATOM_DP_ACTION_TRAINING_PATTERN_SEL,
dig_connector->dp_clock, enc_id, 0);
/* set initial vs/emph */
memset(train_set, 0, 4);
dp_update_dpvs_emph(radeon_connector, encoder, train_set);
udelay(400);
/* set training pattern 1 on the sink */
dp_set_training(radeon_connector, DP_TRAINING_PATTERN_1);
/* clock recovery loop */
clock_recovery = false;
tries = 0;
voltage = 0xff;
for (;;) {
udelay(100);
if (!atom_dp_get_link_status(radeon_connector, link_status))
break;
if (dp_clock_recovery_ok(link_status, dig_connector->dp_lane_count)) {
clock_recovery = true;
break;
}
for (i = 0; i < dig_connector->dp_lane_count; i++) {
if ((train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0)
break;
}
if (i == dig_connector->dp_lane_count) {
DRM_ERROR("clock recovery reached max voltage\n");
break;
}
if ((train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK) == voltage) {
++tries;
if (tries == 5) {
DRM_ERROR("clock recovery tried 5 times\n");
break;
}
} else
tries = 0;
voltage = train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK;
/* Compute new train_set as requested by sink */
dp_get_adjust_train(link_status, dig_connector->dp_lane_count, train_set);
dp_update_dpvs_emph(radeon_connector, encoder, train_set);
}
if (!clock_recovery)
DRM_ERROR("clock recovery failed\n");
else
DRM_INFO("clock recovery at voltage %d pre-emphasis %d\n",
train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK,
(train_set[0] & DP_TRAIN_PRE_EMPHASIS_MASK) >>
DP_TRAIN_PRE_EMPHASIS_SHIFT);
/* set training pattern 2 on the sink */
dp_set_training(radeon_connector, DP_TRAINING_PATTERN_2);
/* set training pattern 2 on the source */
radeon_dp_encoder_service(rdev, ATOM_DP_ACTION_TRAINING_PATTERN_SEL,
dig_connector->dp_clock, enc_id, 1);
/* channel equalization loop */
tries = 0;
channel_eq = false;
for (;;) {
udelay(400);
if (!atom_dp_get_link_status(radeon_connector, link_status))
break;
if (dp_channel_eq_ok(link_status, dig_connector->dp_lane_count)) {
channel_eq = true;
break;
}
/* Try 5 times */
if (tries > 5) {
DRM_ERROR("channel eq failed: 5 tries\n");
break;
}
/* Compute new train_set as requested by sink */
dp_get_adjust_train(link_status, dig_connector->dp_lane_count, train_set);
dp_update_dpvs_emph(radeon_connector, encoder, train_set);
tries++;
}
if (!channel_eq)
DRM_ERROR("channel eq failed\n");
else
DRM_INFO("channel eq at voltage %d pre-emphasis %d\n",
train_set[0] & DP_TRAIN_VOLTAGE_SWING_MASK,
(train_set[0] & DP_TRAIN_PRE_EMPHASIS_MASK)
>> DP_TRAIN_PRE_EMPHASIS_SHIFT);
/* disable the training pattern on the sink */
dp_set_training(radeon_connector, DP_TRAINING_PATTERN_DISABLE);
radeon_dp_encoder_service(rdev, ATOM_DP_ACTION_TRAINING_COMPLETE,
dig_connector->dp_clock, enc_id, 0);
}
int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,
uint8_t write_byte, uint8_t *read_byte)
{
@ -342,3 +776,4 @@ int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,
}
return -EREMOTEIO;
}

16
drivers/gpu/drm/radeon/radeon_connectors.c
View file

@ -934,9 +934,23 @@ static enum drm_connector_status radeon_dp_detect(struct drm_connector *connecto
return ret;
}
static int radeon_dp_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
struct radeon_connector *radeon_connector = to_radeon_connector(connector);
struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv;
/* XXX check mode bandwidth */
if (radeon_dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT)
return radeon_dp_mode_valid_helper(radeon_connector, mode);
else
return MODE_OK;
}
struct drm_connector_helper_funcs radeon_dp_connector_helper_funcs = {
.get_modes = radeon_dp_get_modes,
.mode_valid = radeon_dvi_mode_valid,
.mode_valid = radeon_dp_mode_valid,
.best_encoder = radeon_dvi_encoder,
};

22
drivers/gpu/drm/radeon/radeon_encoders.c
View file

@ -250,6 +250,12 @@ static bool radeon_atom_mode_fixup(struct drm_encoder *encoder,
}
}
if (ASIC_IS_DCE3(rdev) &&
(radeon_encoder->active_device & (ATOM_DEVICE_DFP_SUPPORT))) {
struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
radeon_dp_set_link_config(connector, mode);
}
return true;
}
@ -719,11 +725,9 @@ atombios_dig_encoder_setup(struct drm_encoder *encoder, int action)
args.ucEncoderMode = atombios_get_encoder_mode(encoder);
if (args.ucEncoderMode == ATOM_ENCODER_MODE_DP) {
if (dp_link_clock_for_mode_clock(dig_connector->dpcd[1],
radeon_encoder->pixel_clock) == 270000)
if (dig_connector->dp_clock == 270000)
args.ucConfig |= ATOM_ENCODER_CONFIG_DPLINKRATE_2_70GHZ;
args.ucLaneNum = dp_lanes_for_mode_clock(dig_connector->dpcd[1],
radeon_encoder->pixel_clock);
args.ucLaneNum = dig_connector->dp_lane_count;
} else if (radeon_encoder->pixel_clock > 165000)
args.ucLaneNum = 8;
else
@ -743,7 +747,7 @@ union dig_transmitter_control {
DIG_TRANSMITTER_CONTROL_PARAMETERS_V2 v2;
};
static void
void
atombios_dig_transmitter_setup(struct drm_encoder *encoder, int action, uint8_t lane_num, uint8_t lane_set)
{
struct drm_device *dev = encoder->dev;
@ -803,8 +807,7 @@ atombios_dig_transmitter_setup(struct drm_encoder *encoder, int action, uint8_t
} else {
if (is_dp)
args.v1.usPixelClock =
cpu_to_le16(dp_link_clock_for_mode_clock(dig_connector->dpcd[1],
radeon_encoder->pixel_clock) / 10);
cpu_to_le16(dig_connector->dp_clock / 10);
else if (radeon_encoder->pixel_clock > 165000)
args.v1.usPixelClock = cpu_to_le16((radeon_encoder->pixel_clock / 2) / 10);
else
@ -1198,13 +1201,17 @@ radeon_atom_encoder_mode_set(struct drm_encoder *encoder,
struct radeon_device *rdev = dev->dev_private;
struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
struct radeon_crtc *radeon_crtc = to_radeon_crtc(encoder->crtc);
struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
if (radeon_encoder->active_device &
(ATOM_DEVICE_DFP_SUPPORT | ATOM_DEVICE_LCD_SUPPORT)) {
if (radeon_encoder->enc_priv) {
struct radeon_encoder_atom_dig *dig;
dig = radeon_encoder->enc_priv;
dig->dig_block = radeon_crtc->crtc_id;
}
}
radeon_encoder->pixel_clock = adjusted_mode->clock;
radeon_atombios_encoder_crtc_scratch_regs(encoder, radeon_crtc->crtc_id);
@ -1237,6 +1244,7 @@ radeon_atom_encoder_mode_set(struct drm_encoder *encoder,
atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_INIT, 0, 0);
atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_SETUP, 0, 0);
atombios_dig_transmitter_setup(encoder, ATOM_TRANSMITTER_ACTION_ENABLE, 0, 0);
dp_link_train(encoder, connector);
break;
case ENCODER_OBJECT_ID_INTERNAL_DDI:
atombios_ddia_setup(encoder, ATOM_ENABLE);

13
drivers/gpu/drm/radeon/radeon_mode.h
View file

@ -343,6 +343,8 @@ struct radeon_connector_atom_dig {
struct radeon_i2c_chan *dp_i2c_bus;
u8 dpcd[8];
u8 dp_sink_type;
int dp_clock;
int dp_lane_count;
};
struct radeon_connector {
@ -366,10 +368,17 @@ struct radeon_framebuffer {
struct drm_gem_object *obj;
};
extern int dp_lanes_for_mode_clock(int max_link_bw, int mode_clock);
extern int dp_link_clock_for_mode_clock(int max_link_bw, int mode_clock);
extern int radeon_dp_mode_valid_helper(struct radeon_connector *radeon_connector,
struct drm_display_mode *mode);
extern void radeon_dp_set_link_config(struct drm_connector *connector,
struct drm_display_mode *mode);
extern void dp_link_train(struct drm_encoder *encoder,
struct drm_connector *connector);
extern u8 radeon_dp_getsinktype(struct radeon_connector *radeon_connector);
extern void radeon_dp_getdpcd(struct radeon_connector *radeon_connector);
extern void atombios_dig_transmitter_setup(struct drm_encoder *encoder,
int action, uint8_t lane_num,
uint8_t lane_set);
extern int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,
uint8_t write_byte, uint8_t *read_byte);

51
include/drm/drm_dp_helper.h
View file

@ -43,8 +43,32 @@
#define AUX_I2C_REPLY_MASK (0x3 << 6)
/* AUX CH addresses */
#define DP_DPCD_REV 0x0
/* DPCD */
#define DP_DPCD_REV 0x000
#define DP_MAX_LINK_RATE 0x001
#define DP_MAX_LANE_COUNT 0x002
# define DP_MAX_LANE_COUNT_MASK 0x1f
# define DP_ENHANCED_FRAME_CAP (1 << 7)
#define DP_MAX_DOWNSPREAD 0x003
# define DP_NO_AUX_HANDSHAKE_LINK_TRAINING (1 << 6)
#define DP_NORP 0x004
#define DP_DOWNSTREAMPORT_PRESENT 0x005
# define DP_DWN_STRM_PORT_PRESENT (1 << 0)
# define DP_DWN_STRM_PORT_TYPE_MASK 0x06
/* 00b = DisplayPort */
/* 01b = Analog */
/* 10b = TMDS or HDMI */
/* 11b = Other */
# define DP_FORMAT_CONVERSION (1 << 3)
#define DP_MAIN_LINK_CHANNEL_CODING 0x006
/* link configuration */
#define DP_LINK_BW_SET 0x100
# define DP_LINK_BW_1_62 0x06
# define DP_LINK_BW_2_7 0x0a
@ -54,7 +78,6 @@
# define DP_LANE_COUNT_ENHANCED_FRAME_EN (1 << 7)
#define DP_TRAINING_PATTERN_SET 0x102
# define DP_TRAINING_PATTERN_DISABLE 0
# define DP_TRAINING_PATTERN_1 1
# define DP_TRAINING_PATTERN_2 2
@ -104,11 +127,14 @@
#define DP_LANE0_1_STATUS 0x202
#define DP_LANE2_3_STATUS 0x203
# define DP_LANE_CR_DONE (1 << 0)
# define DP_LANE_CHANNEL_EQ_DONE (1 << 1)
# define DP_LANE_SYMBOL_LOCKED (1 << 2)
#define DP_CHANNEL_EQ_BITS (DP_LANE_CR_DONE | \
DP_LANE_CHANNEL_EQ_DONE | \
DP_LANE_SYMBOL_LOCKED)
#define DP_LANE_ALIGN_STATUS_UPDATED 0x204
#define DP_INTERLANE_ALIGN_DONE (1 << 0)
@ -122,17 +148,18 @@
#define DP_ADJUST_REQUEST_LANE0_1 0x206
#define DP_ADJUST_REQUEST_LANE2_3 0x207
#define DP_ADJUST_VOLTAGE_SWING_LANE0_MASK 0x03
#define DP_ADJUST_VOLTAGE_SWING_LANE0_SHIFT 0
#define DP_ADJUST_PRE_EMPHASIS_LANE0_MASK 0x0c
#define DP_ADJUST_PRE_EMPHASIS_LANE0_SHIFT 2
#define DP_ADJUST_VOLTAGE_SWING_LANE1_MASK 0x30
#define DP_ADJUST_VOLTAGE_SWING_LANE1_SHIFT 4
#define DP_ADJUST_PRE_EMPHASIS_LANE1_MASK 0xc0
#define DP_ADJUST_PRE_EMPHASIS_LANE1_SHIFT 6
# define DP_ADJUST_VOLTAGE_SWING_LANE0_MASK 0x03
# define DP_ADJUST_VOLTAGE_SWING_LANE0_SHIFT 0
# define DP_ADJUST_PRE_EMPHASIS_LANE0_MASK 0x0c
# define DP_ADJUST_PRE_EMPHASIS_LANE0_SHIFT 2
# define DP_ADJUST_VOLTAGE_SWING_LANE1_MASK 0x30
# define DP_ADJUST_VOLTAGE_SWING_LANE1_SHIFT 4
# define DP_ADJUST_PRE_EMPHASIS_LANE1_MASK 0xc0
# define DP_ADJUST_PRE_EMPHASIS_LANE1_SHIFT 6
#define DP_SET_POWER 0x600
# define DP_SET_POWER_D0 0x1
# define DP_SET_POWER_D3 0x2
#define MODE_I2C_START 1
#define MODE_I2C_WRITE 2