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-rw-r--r--drivers/gpu/drm/radeon/atom.c25
-rw-r--r--drivers/gpu/drm/radeon/atombios_dp.c541
-rw-r--r--drivers/gpu/drm/radeon/radeon_connectors.c16
-rw-r--r--drivers/gpu/drm/radeon/radeon_encoders.c30
-rw-r--r--drivers/gpu/drm/radeon/radeon_mode.h13
-rw-r--r--include/drm/drm_dp_helper.h57
6 files changed, 600 insertions, 82 deletions
diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c
index 85abc08..6578d19 100644
--- a/drivers/gpu/drm/radeon/atom.c
+++ b/drivers/gpu/drm/radeon/atom.c
@@ -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;
+}
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c
index 76eb5c8..ebaf3f8 100644
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -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:
- return 162000;
+ 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)
@@ -147,44 +371,10 @@ bool radeon_process_aux_ch(struct radeon_i2c_chan *chan, u8 *req_bytes,
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;
+ struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv;
u8 msg[20];
u8 msg_len, dp_msg_len;
bool ret;
@@ -201,7 +391,7 @@ bool radeon_dp_aux_native_write(struct radeon_connector *radeon_connector, uint1
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);
+ ret = radeon_process_aux_ch(dig_connector->dp_i2c_bus, msg, msg_len, NULL, 0, 0);
return ret;
}
@@ -209,9 +399,7 @@ bool radeon_dp_aux_native_read(struct radeon_connector *radeon_connector, uint16
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;
+ struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv;
u8 msg[20];
u8 msg_len, dp_msg_len;
bool ret = false;
@@ -223,19 +411,47 @@ bool radeon_dp_aux_native_read(struct radeon_connector *radeon_connector, uint16
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);
+ 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)
+{
+ 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 *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,
+ 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;
}
+
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index b51e383..3837cc9 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -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,
};
diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c
index 8f3d67b..397c86f 100644
--- a/drivers/gpu/drm/radeon/radeon_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_encoders.c
@@ -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
@@ -1198,12 +1201,16 @@ 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->enc_priv) {
- struct radeon_encoder_atom_dig *dig;
+ 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;
+ dig = radeon_encoder->enc_priv;
+ dig->dig_block = radeon_crtc->crtc_id;
+ }
}
radeon_encoder->pixel_clock = adjusted_mode->clock;
@@ -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);
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index b516401..7d03e39 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -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);
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index f09b0b2..a49e791 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -43,18 +43,41 @@
#define AUX_I2C_REPLY_MASK (0x3 << 6)
/* AUX CH addresses */
-#define DP_DPCD_REV 0x0
+/* DPCD */
+#define DP_DPCD_REV 0x000
-#define DP_LINK_BW_SET 0x100
+#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
-#define DP_LANE_COUNT_SET 0x101
+#define DP_LANE_COUNT_SET 0x101
# define DP_LANE_COUNT_MASK 0x0f
# define DP_LANE_COUNT_ENHANCED_FRAME_EN (1 << 7)
-#define DP_TRAINING_PATTERN_SET 0x102
-
+#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
generated by cgit v0.10.2 at 2024-11-14 03:04:50 (GMT)